157 files changed, 5672 insertions, 3812 deletions

diff --git a/src/Bindings/AllToLua.pkg b/src/Bindings/AllToLua.pkg
index 7b78578ee..7e174e770 100644
--- a/src/Bindings/AllToLua.pkg
+++ b/src/Bindings/AllToLua.pkg
@@ -74,6 +74,7 @@ $cfile "../BlockEntities/JukeboxEntity.h"
 $cfile "../BlockEntities/NoteEntity.h"
 $cfile "../BlockEntities/SignEntity.h"
 $cfile "../BlockEntities/MobHeadEntity.h"
+$cfile "../BlockEntities/MobSpawnerEntity.h"
 $cfile "../BlockEntities/FlowerPotEntity.h"
 $cfile "../WebAdmin.h"
 $cfile "../Root.h"
diff --git a/src/Bindings/DeprecatedBindings.cpp b/src/Bindings/DeprecatedBindings.cpp
index ded7a0142..6dd6a4e59 100644
--- a/src/Bindings/DeprecatedBindings.cpp
+++ b/src/Bindings/DeprecatedBindings.cpp
@@ -7,6 +7,9 @@
 
 
 #include "../BlockInfo.h"
+#include "../World.h"
+#include "../Entities/Player.h"
+#include "LuaState.h"
 
 
 
@@ -49,7 +52,9 @@ static int tolua_get_AllToLua_g_BlockSpreadLightFalloff(lua_State* tolua_S)
 	{
 		tolua_Error tolua_err;
 		if (!tolua_isnumber(tolua_S, 2, 0, &tolua_err))
+		{
 			tolua_error(tolua_S, "#vinvalid type in array indexing.", &tolua_err);
+		}
 	}
 	#endif
 	BlockType = (int)tolua_tonumber(tolua_S, 2, 0);
@@ -75,7 +80,9 @@ static int tolua_get_AllToLua_g_BlockTransparent(lua_State* tolua_S)
 	{
 		tolua_Error tolua_err;
 		if (!tolua_isnumber(tolua_S, 2, 0, &tolua_err))
+		{
 			tolua_error(tolua_S, "#vinvalid type in array indexing.", &tolua_err);
+		}
 	}
 	#endif
 	BlockType = (int)tolua_tonumber(tolua_S, 2, 0);
@@ -101,7 +108,9 @@ static int tolua_get_AllToLua_g_BlockOneHitDig(lua_State* tolua_S)
 	{
 		tolua_Error tolua_err;
 		if (!tolua_isnumber(tolua_S, 2, 0, &tolua_err))
+		{
 			tolua_error(tolua_S, "#vinvalid type in array indexing.", &tolua_err);
+		}
 	}
 	#endif
 	BlockType = (int)tolua_tonumber(tolua_S, 2, 0);
@@ -127,7 +136,9 @@ static int tolua_get_AllToLua_g_BlockPistonBreakable(lua_State* tolua_S)
 	{
 		tolua_Error tolua_err;
 		if (!tolua_isnumber(tolua_S, 2, 0, &tolua_err))
+		{
 			tolua_error(tolua_S, "#vinvalid type in array indexing.", &tolua_err);
+		}
 	}
 	#endif
 	BlockType = (int)tolua_tonumber(tolua_S, 2, 0);
@@ -153,7 +164,9 @@ static int tolua_get_AllToLua_g_BlockIsSnowable(lua_State* tolua_S)
 	{
 		tolua_Error tolua_err;
 		if (!tolua_isnumber(tolua_S, 2, 0, &tolua_err))
+		{
 			tolua_error(tolua_S, "#vinvalid type in array indexing.", &tolua_err);
+		}
 	}
 	#endif
 	BlockType = (int)tolua_tonumber(tolua_S, 2, 0);
@@ -179,7 +192,9 @@ static int tolua_get_AllToLua_g_BlockIsSolid(lua_State* tolua_S)
 	{
 		tolua_Error tolua_err;
 		if (!tolua_isnumber(tolua_S, 2, 0, &tolua_err))
+		{
 			tolua_error(tolua_S, "#vinvalid type in array indexing.", &tolua_err);
+		}
 	}
 	#endif
 	BlockType = (int)tolua_tonumber(tolua_S, 2, 0);
@@ -205,7 +220,9 @@ static int tolua_get_AllToLua_g_BlockFullyOccupiesVoxel(lua_State* tolua_S)
 	{
 		tolua_Error tolua_err;
 		if (!tolua_isnumber(tolua_S, 2, 0, &tolua_err))
+		{
 			tolua_error(tolua_S, "#vinvalid type in array indexing.", &tolua_err);
+		}
 	}
 	#endif
 	BlockType = (int)tolua_tonumber(tolua_S, 2, 0);
@@ -222,6 +239,100 @@ static int tolua_get_AllToLua_g_BlockFullyOccupiesVoxel(lua_State* tolua_S)
 
 
 
+/* function: StringToMobType */
+static int tolua_AllToLua_StringToMobType00(lua_State* tolua_S)
+{
+	cLuaState LuaState(tolua_S);
+
+	#ifndef TOLUA_RELEASE
+	tolua_Error tolua_err;
+	if (
+		!tolua_iscppstring(tolua_S, 1, 0, &tolua_err) ||
+		!tolua_isnoobj(tolua_S, 2, &tolua_err)
+		)
+		goto tolua_lerror;
+	else
+	#endif
+	{
+		const AString a_MobString = tolua_tocppstring(LuaState, 1, 0);
+		eMonsterType MobType = cMonster::StringToMobType(a_MobString);
+		tolua_pushnumber(LuaState, (lua_Number) MobType);
+		tolua_pushcppstring(LuaState, (const char *) a_MobString);
+	}
+
+	LOGWARNING("Warning in function call 'StringToMobType': StringToMobType() is deprecated. Please use cMonster:StringToMobType()");
+	LuaState.LogStackTrace(0);
+	return 2;
+
+	#ifndef TOLUA_RELEASE
+tolua_lerror:
+	tolua_error(LuaState, "#ferror in function 'StringToMobType'.", &tolua_err);
+	return 0;
+	#endif
+}
+
+
+
+
+
+/** function: cWorld:SetSignLines */
+static int tolua_cWorld_SetSignLines(lua_State * tolua_S)
+{
+	cLuaState LuaState(tolua_S);
+
+	#ifndef TOLUA_RELEASE
+	tolua_Error tolua_err;
+	if (
+		!tolua_isusertype (LuaState, 1, "cWorld", 0, &tolua_err) ||
+		!tolua_isnumber   (LuaState, 2, 0, &tolua_err) ||
+		!tolua_isnumber   (LuaState, 3, 0, &tolua_err) ||
+		!tolua_isnumber   (LuaState, 4, 0, &tolua_err) ||
+		!tolua_iscppstring(LuaState, 5, 0, &tolua_err) ||
+		!tolua_iscppstring(LuaState, 6, 0, &tolua_err) ||
+		!tolua_iscppstring(LuaState, 7, 0, &tolua_err) ||
+		!tolua_iscppstring(LuaState, 8, 0, &tolua_err) ||
+		!tolua_isusertype (LuaState, 9, "cPlayer", 1, &tolua_err) ||
+		!tolua_isnoobj    (LuaState, 10, &tolua_err)
+		)
+		goto tolua_lerror;
+	else
+	#endif
+	{
+		cWorld * self       = (cWorld *) tolua_tousertype (LuaState, 1, nullptr);
+		int BlockX          = (int)      tolua_tonumber   (LuaState, 2, 0);
+		int BlockY          = (int)      tolua_tonumber   (LuaState, 3, 0);
+		int BlockZ          = (int)      tolua_tonumber   (LuaState, 4, 0);
+		const AString Line1 =            tolua_tocppstring(LuaState, 5, 0);
+		const AString Line2 =            tolua_tocppstring(LuaState, 6, 0);
+		const AString Line3 =            tolua_tocppstring(LuaState, 7, 0);
+		const AString Line4 =            tolua_tocppstring(LuaState, 8, 0);
+		cPlayer * Player    = (cPlayer *)tolua_tousertype (LuaState, 9, nullptr);
+		#ifndef TOLUA_RELEASE
+		if (self == nullptr)
+		{
+			tolua_error(LuaState, "invalid 'self' in function 'UpdateSign'", nullptr);
+		}
+		#endif
+		{
+			bool res = self->SetSignLines(BlockX, BlockY, BlockZ, Line1, Line2, Line3, Line4, Player);
+			tolua_pushboolean(LuaState, res ? 1 : 0);
+		}
+	}
+	LOGWARNING("Warning in function call 'UpdateSign': UpdateSign() is deprecated. Please use SetSignLines()");
+	LuaState.LogStackTrace(0);
+	return 1;
+	
+	#ifndef TOLUA_RELEASE
+tolua_lerror:
+	tolua_error(LuaState, "#ferror in function 'UpdateSign'.", &tolua_err);
+	return 0;
+	#endif
+}
+
+
+
+
+
 void DeprecatedBindings::Bind(lua_State * tolua_S)
 {
 	tolua_beginmodule(tolua_S, nullptr);
@@ -235,6 +346,12 @@ void DeprecatedBindings::Bind(lua_State * tolua_S)
 	tolua_array(tolua_S, "g_BlockIsSolid",             tolua_get_AllToLua_g_BlockIsSolid,             nullptr);
 	tolua_array(tolua_S, "g_BlockFullyOccupiesVoxel",  tolua_get_AllToLua_g_BlockFullyOccupiesVoxel,  nullptr);
 
+	tolua_function(tolua_S, "StringToMobType", tolua_AllToLua_StringToMobType00);
+
+	tolua_beginmodule(tolua_S, "cWorld");
+		tolua_function(tolua_S, "UpdateSign", tolua_cWorld_SetSignLines);
+	tolua_endmodule(tolua_S);
+
 	tolua_endmodule(tolua_S);
 }
 
diff --git a/src/Bindings/ManualBindings.cpp b/src/Bindings/ManualBindings.cpp
index a4a5d79b4..750f7c65a 100644
--- a/src/Bindings/ManualBindings.cpp
+++ b/src/Bindings/ManualBindings.cpp
@@ -1034,11 +1034,11 @@ static int tolua_cWorld_SetSignLines(lua_State * tolua_S)
 		#ifndef TOLUA_RELEASE
 		if (self == nullptr)
 		{
-			tolua_error(tolua_S, "invalid 'self' in function 'SetSignLines' / 'UpdateSign'", nullptr);
+			tolua_error(tolua_S, "invalid 'self' in function 'SetSignLines'", nullptr);
 		}
 		#endif
 		{
-			bool res = self->UpdateSign(BlockX, BlockY, BlockZ, Line1, Line2, Line3, Line4, Player);
+			bool res = self->SetSignLines(BlockX, BlockY, BlockZ, Line1, Line2, Line3, Line4, Player);
 			tolua_pushboolean(tolua_S, res ? 1 : 0);
 		}
 	}
@@ -1046,7 +1046,7 @@ static int tolua_cWorld_SetSignLines(lua_State * tolua_S)
 	
 	#ifndef TOLUA_RELEASE
 tolua_lerror:
-	tolua_error(tolua_S, "#ferror in function 'SetSignLines' / 'UpdateSign'.", &tolua_err);
+	tolua_error(tolua_S, "#ferror in function 'SetSignLines'.", &tolua_err);
 	return 0;
 	#endif
 }
@@ -3368,6 +3368,7 @@ void ManualBindings::Bind(lua_State * tolua_S)
 		
 		tolua_beginmodule(tolua_S, "cRoot");
 			tolua_function(tolua_S, "FindAndDoWithPlayer", tolua_DoWith <cRoot, cPlayer, &cRoot::FindAndDoWithPlayer>);
+			tolua_function(tolua_S, "DoWithPlayerByUUID",  tolua_DoWith <cRoot, cPlayer, &cRoot::DoWithPlayerByUUID>);
 			tolua_function(tolua_S, "ForEachPlayer",       tolua_ForEach<cRoot, cPlayer, &cRoot::ForEachPlayer>);
 			tolua_function(tolua_S, "ForEachWorld",        tolua_ForEach<cRoot, cWorld,  &cRoot::ForEachWorld>);
 			tolua_function(tolua_S, "GetFurnaceRecipe",    tolua_cRoot_GetFurnaceRecipe);
@@ -3389,6 +3390,7 @@ void ManualBindings::Bind(lua_State * tolua_S)
 			tolua_function(tolua_S, "DoWithFlowerPotAt",         tolua_DoWithXYZ<cWorld, cFlowerPotEntity,    &cWorld::DoWithFlowerPotAt>);
 			tolua_function(tolua_S, "DoWithPlayer",              tolua_DoWith<   cWorld, cPlayer,             &cWorld::DoWithPlayer>);
 			tolua_function(tolua_S, "FindAndDoWithPlayer",       tolua_DoWith<   cWorld, cPlayer,             &cWorld::FindAndDoWithPlayer>);
+			tolua_function(tolua_S, "DoWithPlayerByUUID",        tolua_DoWith<   cWorld, cPlayer,             &cWorld::DoWithPlayerByUUID>);
 			tolua_function(tolua_S, "ForEachBlockEntityInChunk", tolua_ForEachInChunk<cWorld, cBlockEntity,   &cWorld::ForEachBlockEntityInChunk>);
 			tolua_function(tolua_S, "ForEachChestInChunk",       tolua_ForEachInChunk<cWorld, cChestEntity,   &cWorld::ForEachChestInChunk>);
 			tolua_function(tolua_S, "ForEachEntity",             tolua_ForEach<       cWorld, cEntity,        &cWorld::ForEachEntity>);
@@ -3403,7 +3405,6 @@ void ManualBindings::Bind(lua_State * tolua_S)
 			tolua_function(tolua_S, "ScheduleTask",              tolua_cWorld_ScheduleTask);
 			tolua_function(tolua_S, "SetSignLines",              tolua_cWorld_SetSignLines);
 			tolua_function(tolua_S, "TryGetHeight",              tolua_cWorld_TryGetHeight);
-			tolua_function(tolua_S, "UpdateSign",                tolua_cWorld_SetSignLines);
 		tolua_endmodule(tolua_S);
 		
 		tolua_beginmodule(tolua_S, "cMapManager");
diff --git a/src/Bindings/Plugin.h b/src/Bindings/Plugin.h
index 8cc9ff0cd..08677553c 100644
--- a/src/Bindings/Plugin.h
+++ b/src/Bindings/Plugin.h
@@ -54,7 +54,7 @@ public:
 	virtual bool OnChunkUnloaded            (cWorld & a_World, int a_ChunkX, int a_ChunkZ) = 0;
 	virtual bool OnChunkUnloading           (cWorld & a_World, int a_ChunkX, int a_ChunkZ) = 0;
 	virtual bool OnCollectingPickup         (cPlayer & a_Player, cPickup & a_Pickup) = 0;
-	virtual bool OnCraftingNoRecipe         (cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe * a_Recipe) = 0;
+	virtual bool OnCraftingNoRecipe         (cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe) = 0;
 	virtual bool OnDisconnect               (cClientHandle & a_Client, const AString & a_Reason) = 0;
 	virtual bool OnEntityAddEffect          (cEntity & a_Entity, int a_EffectType, int a_EffectDurationTicks, int a_EffectIntensity, double a_DistanceModifier) = 0;
 	virtual bool OnExecuteCommand           (cPlayer * a_Player, const AStringVector & a_Split) = 0;
diff --git a/src/Bindings/PluginLua.cpp b/src/Bindings/PluginLua.cpp
index 391d8bcbe..ea782ea3f 100644
--- a/src/Bindings/PluginLua.cpp
+++ b/src/Bindings/PluginLua.cpp
@@ -382,7 +382,7 @@ bool cPluginLua::OnCollectingPickup(cPlayer & a_Player, cPickup & a_Pickup)
 
 
 
-bool cPluginLua::OnCraftingNoRecipe(cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe * a_Recipe)
+bool cPluginLua::OnCraftingNoRecipe(cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe)
 {
 	cCSLock Lock(m_CriticalSection);
 	bool res = false;
diff --git a/src/Bindings/PluginLua.h b/src/Bindings/PluginLua.h
index 6bb134efc..7de5ffec4 100644
--- a/src/Bindings/PluginLua.h
+++ b/src/Bindings/PluginLua.h
@@ -78,7 +78,7 @@ public:
 	virtual bool OnChunkUnloaded            (cWorld & a_World, int a_ChunkX, int a_ChunkZ) override;
 	virtual bool OnChunkUnloading           (cWorld & a_World, int a_ChunkX, int a_ChunkZ) override;
 	virtual bool OnCollectingPickup         (cPlayer & a_Player, cPickup & a_Pickup) override;
-	virtual bool OnCraftingNoRecipe         (cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe * a_Recipe) override;
+	virtual bool OnCraftingNoRecipe         (cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe) override;
 	virtual bool OnDisconnect               (cClientHandle & a_Client, const AString & a_Reason) override;
 	virtual bool OnEntityAddEffect          (cEntity & a_Entity, int a_EffectType, int a_EffectDurationTicks, int a_EffectIntensity, double a_DistanceModifier) override;
 	virtual bool OnExecuteCommand           (cPlayer * a_Player, const AStringVector & a_Split) override;
diff --git a/src/Bindings/PluginManager.cpp b/src/Bindings/PluginManager.cpp
index f63578885..406a540f4 100644
--- a/src/Bindings/PluginManager.cpp
+++ b/src/Bindings/PluginManager.cpp
@@ -448,7 +448,7 @@ bool cPluginManager::CallHookCollectingPickup(cPlayer & a_Player, cPickup & a_Pi
 
 
 
-bool cPluginManager::CallHookCraftingNoRecipe(cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe * a_Recipe)
+bool cPluginManager::CallHookCraftingNoRecipe(cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe)
 {
 	FIND_HOOK(HOOK_CRAFTING_NO_RECIPE);
 	VERIFY_HOOK;
@@ -1459,11 +1459,16 @@ cPluginManager::CommandResult cPluginManager::HandleCommand(cPlayer & a_Player,
 
 
 
-cPlugin * cPluginManager::GetPlugin( const AString & a_Plugin) const
+cPlugin * cPluginManager::GetPlugin(const AString & a_Plugin) const
 {
 	for (PluginMap::const_iterator itr = m_Plugins.begin(); itr != m_Plugins.end(); ++itr)
 	{
-		if (itr->second == nullptr) continue;
+		if (itr->second == nullptr)
+		{
+			// The plugin is currently unloaded
+			continue;
+		}
+
 		if (itr->second->GetName().compare(a_Plugin) == 0)
 		{
 			return itr->second;
diff --git a/src/Bindings/PluginManager.h b/src/Bindings/PluginManager.h
index bc8c1f5e6..3a2aecc92 100644
--- a/src/Bindings/PluginManager.h
+++ b/src/Bindings/PluginManager.h
@@ -187,7 +187,7 @@ public:
 	bool CallHookChunkUnloaded            (cWorld & a_World, int a_ChunkX, int a_ChunkZ);
 	bool CallHookChunkUnloading           (cWorld & a_World, int a_ChunkX, int a_ChunkZ);
 	bool CallHookCollectingPickup         (cPlayer & a_Player, cPickup & a_Pickup);
-	bool CallHookCraftingNoRecipe         (cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe * a_Recipe);
+	bool CallHookCraftingNoRecipe         (cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe);
 	bool CallHookDisconnect               (cClientHandle & a_Client, const AString & a_Reason);
 	bool CallHookEntityAddEffect          (cEntity & a_Entity, int a_EffectType, int a_EffectDurationTicks, int a_EffectIntensity, double a_DistanceModifier);
 	bool CallHookExecuteCommand           (cPlayer * a_Player, const AStringVector & a_Split);  // If a_Player == nullptr, it is a console cmd
diff --git a/src/BlockEntities/BeaconEntity.cpp b/src/BlockEntities/BeaconEntity.cpp
index 85819446c..409f2937c 100644
--- a/src/BlockEntities/BeaconEntity.cpp
+++ b/src/BlockEntities/BeaconEntity.cpp
@@ -247,15 +247,16 @@ void cBeaconEntity::GiveEffects(void)
 		}
 
 	public:
-		cPlayerCallback(int a_Radius, int a_PosX, int a_PosY, int a_PosZ, cEntityEffect::eType a_PrimaryEffect, cEntityEffect::eType a_SecondaryEffect, short a_EffectLevel)
-			: m_Radius(a_Radius)
-			, m_PosX(a_PosX)
-			, m_PosY(a_PosY)
-			, m_PosZ(a_PosZ)
-			, m_PrimaryEffect(a_PrimaryEffect)
-			, m_SecondaryEffect(a_SecondaryEffect)
-			, m_EffectLevel(a_EffectLevel)
-		{};
+		cPlayerCallback(int a_Radius, int a_PosX, int a_PosY, int a_PosZ, cEntityEffect::eType a_PrimaryEffect, cEntityEffect::eType a_SecondaryEffect, short a_EffectLevel):
+			m_Radius(a_Radius),
+			m_PosX(a_PosX),
+			m_PosY(a_PosY),
+			m_PosZ(a_PosZ),
+			m_PrimaryEffect(a_PrimaryEffect),
+			m_SecondaryEffect(a_SecondaryEffect),
+			m_EffectLevel(a_EffectLevel)
+		{
+		}
 
 	} PlayerCallback(Radius, m_PosX, m_PosY, m_PosZ, m_PrimaryEffect, SecondaryEffect, EffectLevel);
 	GetWorld()->ForEachPlayer(PlayerCallback);
diff --git a/src/BlockEntities/BeaconEntity.h b/src/BlockEntities/BeaconEntity.h
index d1db3a68f..bc27e92b0 100644
--- a/src/BlockEntities/BeaconEntity.h
+++ b/src/BlockEntities/BeaconEntity.h
@@ -1,3 +1,4 @@
+
 // BeaconEntity.h
 
 // Declares the cBeaconEntity class representing a single beacon in the world
@@ -14,15 +15,6 @@
 
 
 
-namespace Json
-{
-	class Value;
-}
-
-
-
-
-
 // tolua_begin
 class cBeaconEntity :
 	public cBlockEntityWithItems
@@ -32,7 +24,7 @@ class cBeaconEntity :
 public:
 	// tolua_end
 
-	BLOCKENTITY_PROTODEF(cBeaconEntity);
+	BLOCKENTITY_PROTODEF(cBeaconEntity)
 
 	cBeaconEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
 
diff --git a/src/BlockEntities/BlockEntity.cpp b/src/BlockEntities/BlockEntity.cpp
index 3d96e891e..c59198e79 100644
--- a/src/BlockEntities/BlockEntity.cpp
+++ b/src/BlockEntities/BlockEntity.cpp
@@ -14,10 +14,11 @@
 #include "FlowerPotEntity.h"
 #include "FurnaceEntity.h"
 #include "HopperEntity.h"
+#include "MobHeadEntity.h"
+#include "MobSpawnerEntity.h"
 #include "JukeboxEntity.h"
 #include "NoteEntity.h"
 #include "SignEntity.h"
-#include "MobHeadEntity.h"
 
 
 
@@ -37,6 +38,7 @@ cBlockEntity * cBlockEntity::CreateByBlockType(BLOCKTYPE a_BlockType, NIBBLETYPE
 		case E_BLOCK_FURNACE:       return new cFurnaceEntity     (a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, a_World);
 		case E_BLOCK_HEAD:          return new cMobHeadEntity     (a_BlockX, a_BlockY, a_BlockZ, a_World);
 		case E_BLOCK_HOPPER:        return new cHopperEntity      (a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_MOB_SPAWNER:   return new cMobSpawnerEntity  (a_BlockX, a_BlockY, a_BlockZ, a_World);
 		case E_BLOCK_JUKEBOX:       return new cJukeboxEntity     (a_BlockX, a_BlockY, a_BlockZ, a_World);
 		case E_BLOCK_LIT_FURNACE:   return new cFurnaceEntity     (a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, a_World);
 		case E_BLOCK_SIGN_POST:     return new cSignEntity        (a_BlockType, a_BlockX, a_BlockY, a_BlockZ, a_World);
diff --git a/src/BlockEntities/BlockEntity.h b/src/BlockEntities/BlockEntity.h
index ffd6ee856..056a88721 100644
--- a/src/BlockEntities/BlockEntity.h
+++ b/src/BlockEntities/BlockEntity.h
@@ -28,11 +28,6 @@
 
 
 
-namespace Json
-{
-	class Value;
-};
-
 class cChunk;
 class cPlayer;
 class cWorld;
@@ -115,7 +110,7 @@ public:
 	virtual void SendTo(cClientHandle & a_Client) = 0;
 	
 	/// Ticks the entity; returns true if the chunk should be marked as dirty as a result of this ticking. By default does nothing.
-	virtual bool Tick(float a_Dt, cChunk & /* a_Chunk */)
+	virtual bool Tick(float a_Dt, cChunk & a_Chunk)
 	{
 		UNUSED(a_Dt);
 		return false;
diff --git a/src/BlockEntities/BlockEntityWithItems.h b/src/BlockEntities/BlockEntityWithItems.h
index 8c7d4749b..2c2ced1cb 100644
--- a/src/BlockEntities/BlockEntityWithItems.h
+++ b/src/BlockEntities/BlockEntityWithItems.h
@@ -29,7 +29,7 @@ class cBlockEntityWithItems :
 public:
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cBlockEntityWithItems);
+	BLOCKENTITY_PROTODEF(cBlockEntityWithItems)
 	
 	cBlockEntityWithItems(
 		BLOCKTYPE a_BlockType,                      // Type of the block that the entity represents
diff --git a/src/BlockEntities/CMakeLists.txt b/src/BlockEntities/CMakeLists.txt
index d87594b0d..5f4af288d 100644
--- a/src/BlockEntities/CMakeLists.txt
+++ b/src/BlockEntities/CMakeLists.txt
@@ -18,6 +18,7 @@ SET (SRCS
 	HopperEntity.cpp
 	JukeboxEntity.cpp
 	MobHeadEntity.cpp
+	MobSpawnerEntity.cpp
 	NoteEntity.cpp
 	SignEntity.cpp)
 
@@ -36,6 +37,7 @@ SET (HDRS
 	HopperEntity.h
 	JukeboxEntity.h
 	MobHeadEntity.h
+	MobSpawnerEntity.h
 	NoteEntity.h
 	SignEntity.h)
 
diff --git a/src/BlockEntities/ChestEntity.h b/src/BlockEntities/ChestEntity.h
index 09fffb923..645dbf4bc 100644
--- a/src/BlockEntities/ChestEntity.h
+++ b/src/BlockEntities/ChestEntity.h
@@ -7,11 +7,6 @@
 
 
 
-namespace Json
-{
-	class Value;
-};
-
 class cClientHandle;
 
 
@@ -33,7 +28,7 @@ public:
 	
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cChestEntity);
+	BLOCKENTITY_PROTODEF(cChestEntity)
 	
 	/** Constructor used for normal operation */
 	cChestEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World, BLOCKTYPE a_Type);
diff --git a/src/BlockEntities/CommandBlockEntity.h b/src/BlockEntities/CommandBlockEntity.h
index 217390293..d8ac054f0 100644
--- a/src/BlockEntities/CommandBlockEntity.h
+++ b/src/BlockEntities/CommandBlockEntity.h
@@ -15,14 +15,6 @@
 
 
 
-namespace Json
-{
-	class Value;
-}
-
-
-
-
 
 // tolua_begin
 
@@ -36,7 +28,7 @@ public:
 
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cCommandBlockEntity);
+	BLOCKENTITY_PROTODEF(cCommandBlockEntity)
 	
 	/// Creates a new empty command block entity
 	cCommandBlockEntity(int a_X, int a_Y, int a_Z, cWorld * a_World);
diff --git a/src/BlockEntities/DispenserEntity.h b/src/BlockEntities/DispenserEntity.h
index 5ba87b716..12e12942a 100644
--- a/src/BlockEntities/DispenserEntity.h
+++ b/src/BlockEntities/DispenserEntity.h
@@ -17,7 +17,7 @@ public:
 
 	// tolua_end
 
-	BLOCKENTITY_PROTODEF(cDispenserEntity);
+	BLOCKENTITY_PROTODEF(cDispenserEntity)
 	
 	/** Constructor used for normal operation */
 	cDispenserEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
diff --git a/src/BlockEntities/DropSpenserEntity.h b/src/BlockEntities/DropSpenserEntity.h
index f77a28c28..6c23a402f 100644
--- a/src/BlockEntities/DropSpenserEntity.h
+++ b/src/BlockEntities/DropSpenserEntity.h
@@ -16,10 +16,6 @@
 
 
 
-namespace Json
-{
-	class Value;
-}
 
 class cClientHandle;
 
@@ -45,7 +41,7 @@ public:
 	
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cDropSpenserEntity);
+	BLOCKENTITY_PROTODEF(cDropSpenserEntity)
 	
 	cDropSpenserEntity(BLOCKTYPE a_BlockType, int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
 	virtual ~cDropSpenserEntity();
diff --git a/src/BlockEntities/DropperEntity.h b/src/BlockEntities/DropperEntity.h
index 91adf660f..c638dafa8 100644
--- a/src/BlockEntities/DropperEntity.h
+++ b/src/BlockEntities/DropperEntity.h
@@ -25,7 +25,7 @@ public:
 
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cDropperEntity);
+	BLOCKENTITY_PROTODEF(cDropperEntity)
 	
 	/// Constructor used for normal operation
 	cDropperEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
diff --git a/src/BlockEntities/EnderChestEntity.h b/src/BlockEntities/EnderChestEntity.h
index 17abd880a..af59cf170 100644
--- a/src/BlockEntities/EnderChestEntity.h
+++ b/src/BlockEntities/EnderChestEntity.h
@@ -18,7 +18,7 @@ class cEnderChestEntity :
 public:
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cEnderChestEntity);
+	BLOCKENTITY_PROTODEF(cEnderChestEntity)
 	
 	cEnderChestEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
 	virtual ~cEnderChestEntity();
diff --git a/src/BlockEntities/FlowerPotEntity.h b/src/BlockEntities/FlowerPotEntity.h
index fc886c51f..a4246bb7d 100644
--- a/src/BlockEntities/FlowerPotEntity.h
+++ b/src/BlockEntities/FlowerPotEntity.h
@@ -15,16 +15,6 @@
 
 
 
-
-namespace Json
-{
-	class Value;
-}
-
-
-
-
-
 // tolua_begin
 
 class cFlowerPotEntity :
@@ -36,7 +26,7 @@ public:
 
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cFlowerPotEntity);
+	BLOCKENTITY_PROTODEF(cFlowerPotEntity)
 	
 	/** Creates a new flowerpot entity at the specified block coords. a_World may be nullptr */
 	cFlowerPotEntity(int a_BlocX, int a_BlockY, int a_BlockZ, cWorld * a_World);
diff --git a/src/BlockEntities/FurnaceEntity.h b/src/BlockEntities/FurnaceEntity.h
index 71c2fe127..fbe9d6c75 100644
--- a/src/BlockEntities/FurnaceEntity.h
+++ b/src/BlockEntities/FurnaceEntity.h
@@ -8,11 +8,6 @@
 
 
 
-namespace Json
-{
-	class Value;
-}
-
 class cClientHandle;
 
 
@@ -38,7 +33,7 @@ public:
 	
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cFurnaceEntity);
+	BLOCKENTITY_PROTODEF(cFurnaceEntity)
 	
 	/** Constructor used for normal operation */
 	cFurnaceEntity(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, cWorld * a_World);
diff --git a/src/BlockEntities/HopperEntity.h b/src/BlockEntities/HopperEntity.h
index 7070bbad3..da65aa671 100644
--- a/src/BlockEntities/HopperEntity.h
+++ b/src/BlockEntities/HopperEntity.h
@@ -31,7 +31,7 @@ public:
 
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cHopperEntity);
+	BLOCKENTITY_PROTODEF(cHopperEntity)
 	
 	/// Constructor used for normal operation
 	cHopperEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
diff --git a/src/BlockEntities/JukeboxEntity.h b/src/BlockEntities/JukeboxEntity.h
index 7a69d6499..000f7d87e 100644
--- a/src/BlockEntities/JukeboxEntity.h
+++ b/src/BlockEntities/JukeboxEntity.h
@@ -7,15 +7,6 @@
 
 
 
-namespace Json
-{
-	class Value;
-}
-
-
-
-
-
 // tolua_begin
 
 class cJukeboxEntity :
@@ -26,7 +17,7 @@ public:
 
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cJukeboxEntity);
+	BLOCKENTITY_PROTODEF(cJukeboxEntity)
 	
 	cJukeboxEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
 	virtual ~cJukeboxEntity();
diff --git a/src/BlockEntities/MobHeadEntity.h b/src/BlockEntities/MobHeadEntity.h
index 7132ef558..7f08c5ab2 100644
--- a/src/BlockEntities/MobHeadEntity.h
+++ b/src/BlockEntities/MobHeadEntity.h
@@ -14,14 +14,6 @@
 
 
 
-namespace Json
-{
-	class Value;
-}
-
-
-
-
 
 // tolua_begin
 
@@ -34,29 +26,29 @@ public:
 
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cMobHeadEntity);
+	BLOCKENTITY_PROTODEF(cMobHeadEntity)
 	
 	/** Creates a new mob head entity at the specified block coords. a_World may be nullptr */
 	cMobHeadEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
 
 	// tolua_begin
 	
-	/** Set the Type */
+	/** Set the type of the mob head */
 	void SetType(const eMobHeadType & a_SkullType);
 	
-	/** Set the Rotation */
+	/** Set the rotation of the mob head */
 	void SetRotation(eMobHeadRotation a_Rotation);
 	
-	/** Set the Player Name for Mobheads with Player type */
+	/** Set the player name for mob heads with player type */
 	void SetOwner(const AString & a_Owner);
 	
-	/** Get the Type */
+	/** Returns the type of the mob head */
 	eMobHeadType GetType(void) const { return m_Type; }
 	
-	/** Get the Rotation */
+	/** Returns the rotation of the mob head */
 	eMobHeadRotation GetRotation(void) const { return m_Rotation; }
 	
-	/** Get the setted Player Name */
+	/** Returns the player name of the mob head */
 	AString GetOwner(void) const { return m_Owner; }
 	
 	// tolua_end
diff --git a/src/BlockEntities/MobSpawnerEntity.cpp b/src/BlockEntities/MobSpawnerEntity.cpp
new file mode 100644
index 000000000..5edee888a
--- /dev/null
+++ b/src/BlockEntities/MobSpawnerEntity.cpp
@@ -0,0 +1,290 @@
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "MobSpawnerEntity.h"
+
+#include "../World.h"
+#include "../FastRandom.h"
+#include "../MobSpawner.h"
+#include "../Items/ItemSpawnEgg.h"
+
+
+
+
+
+cMobSpawnerEntity::cMobSpawnerEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World)
+	: super(E_BLOCK_MOB_SPAWNER, a_BlockX, a_BlockY, a_BlockZ, a_World)
+	, m_Entity(mtPig)
+	, m_SpawnDelay(100)
+	, m_IsActive(false)
+{
+}
+
+
+
+
+
+void cMobSpawnerEntity::SendTo(cClientHandle & a_Client)
+{
+	a_Client.SendUpdateBlockEntity(*this);
+}
+
+
+
+
+
+void cMobSpawnerEntity::UsedBy(cPlayer * a_Player)
+{
+	if (a_Player->GetEquippedItem().m_ItemType == E_ITEM_SPAWN_EGG)
+	{
+		eMonsterType MonsterType = cItemSpawnEggHandler::ItemDamageToMonsterType(a_Player->GetEquippedItem().m_ItemDamage);
+		if (MonsterType == eMonsterType::mtInvalidType)
+		{
+			return;
+		}
+
+		m_Entity = MonsterType;
+		ResetTimer();
+		if (!a_Player->IsGameModeCreative())
+		{
+			a_Player->GetInventory().RemoveOneEquippedItem();
+		}
+		LOGD("Changed monster spawner at {%d, %d, %d} to type %s.", GetPosX(), GetPosY(), GetPosZ(), cMonster::MobTypeToString(MonsterType).c_str());
+	}
+}
+
+
+
+
+
+void cMobSpawnerEntity::UpdateActiveState(void)
+{
+	if (GetNearbyPlayersNum() > 0)
+	{
+		m_IsActive = true;
+	}
+	else
+	{
+		m_IsActive = false;
+	}
+}
+
+
+
+
+
+bool cMobSpawnerEntity::Tick(float a_Dt, cChunk & a_Chunk)
+{
+	// Update the active flag every 5 seconds
+	if ((m_World->GetWorldAge() % 100) == 0)
+	{
+		UpdateActiveState();
+	}
+
+	if (!m_IsActive)
+	{
+		return false;
+	}
+
+	if (m_SpawnDelay <= 0)
+	{
+		SpawnEntity();
+		return true;
+	}
+	else
+	{
+		m_SpawnDelay--;
+	}
+	return false;
+}
+
+
+
+
+
+void cMobSpawnerEntity::ResetTimer(void)
+{
+	m_SpawnDelay = static_cast<short>(200 + m_World->GetTickRandomNumber(600));
+	m_World->BroadcastBlockEntity(m_PosX, m_PosY, m_PosZ);
+}
+
+
+
+
+
+void cMobSpawnerEntity::SpawnEntity(void)
+{
+	int NearbyEntities = GetNearbyMonsterNum(m_Entity);
+	if (NearbyEntities >= 6)
+	{
+		ResetTimer();
+		return;
+	}
+
+	class cCallback : public cChunkCallback
+	{
+	public:
+		cCallback(int a_RelX, int a_RelY, int a_RelZ, eMonsterType a_MobType, int a_NearbyEntitiesNum) :
+			m_RelX(a_RelX),
+			m_RelY(a_RelY),
+			m_RelZ(a_RelZ),
+			m_MobType(a_MobType),
+			m_NearbyEntitiesNum(a_NearbyEntitiesNum)
+		{
+		}
+
+		virtual bool Item(cChunk * a_Chunk)
+		{
+			cFastRandom Random;
+
+			bool EntitiesSpawned = false;
+			for (size_t i = 0; i < 4; i++)
+			{
+				if (m_NearbyEntitiesNum >= 6)
+				{
+					break;
+				}
+
+				int RelX = (int) (m_RelX + (double)(Random.NextFloat() - Random.NextFloat()) * 4.0);
+				int RelY = m_RelY + Random.NextInt(3) - 1;
+				int RelZ = (int) (m_RelZ + (double)(Random.NextFloat() - Random.NextFloat()) * 4.0);
+
+				cChunk * Chunk = a_Chunk->GetRelNeighborChunkAdjustCoords(RelX, RelZ);
+				if ((Chunk == NULL) || !Chunk->IsValid())
+				{
+					continue;
+				}
+				EMCSBiome Biome = Chunk->GetBiomeAt(RelX, RelZ);
+
+				if (cMobSpawner::CanSpawnHere(Chunk, RelX, RelY, RelZ, m_MobType, Biome))
+				{
+					double PosX = Chunk->GetPosX() * cChunkDef::Width + RelX;
+					double PosZ = Chunk->GetPosZ() * cChunkDef::Width + RelZ;
+
+					cMonster * Monster = cMonster::NewMonsterFromType(m_MobType);
+					if (Monster == NULL)
+					{
+						continue;
+					}
+
+					Monster->SetPosition(PosX, RelY, PosZ);
+					Monster->SetYaw(Random.NextFloat() * 360.0f);
+					if (Chunk->GetWorld()->SpawnMobFinalize(Monster) != mtInvalidType)
+					{
+						EntitiesSpawned = true;
+						Chunk->BroadcastSoundParticleEffect(2004, (int)(PosX * 8.0), (int)(RelY * 8.0), (int)(PosZ * 8.0), 0);
+						m_NearbyEntitiesNum++;
+					}
+				}
+			}
+			return EntitiesSpawned;
+		}
+	protected:
+		int m_RelX, m_RelY, m_RelZ;
+		eMonsterType m_MobType;
+		int m_NearbyEntitiesNum;
+	} Callback(m_RelX, m_PosY, m_RelZ, m_Entity, NearbyEntities);
+
+	if (m_World->DoWithChunk(GetChunkX(), GetChunkZ(), Callback))
+	{
+		ResetTimer();
+	}
+}
+
+
+
+
+
+int cMobSpawnerEntity::GetNearbyPlayersNum(void)
+{
+	Vector3d SpawnerPos(m_PosX + 0.5, m_PosY + 0.5, m_PosZ + 0.5);
+	int NumPlayers = 0;
+
+	class cCallback : public cChunkDataCallback
+	{
+	public:
+		cCallback(Vector3d a_SpawnerPos, int & a_NumPlayers) :
+			m_SpawnerPos(a_SpawnerPos),
+			m_NumPlayers(a_NumPlayers)
+		{
+		}
+
+		virtual void Entity(cEntity * a_Entity) override
+		{
+			if (!a_Entity->IsPlayer())
+			{
+				return;
+			}
+
+			if ((m_SpawnerPos - a_Entity->GetPosition()).Length() <= 16)
+			{
+				m_NumPlayers++;
+			}
+		}
+
+	protected:
+		Vector3d m_SpawnerPos;
+		int & m_NumPlayers;
+	} Callback(SpawnerPos, NumPlayers);
+
+	int ChunkX = GetChunkX();
+	int ChunkZ = GetChunkZ();
+	m_World->ForEachChunkInRect(ChunkX - 1, ChunkX + 1, ChunkZ - 1, ChunkZ + 1, Callback);
+
+	return NumPlayers;
+}
+
+
+
+
+
+int cMobSpawnerEntity::GetNearbyMonsterNum(eMonsterType a_EntityType)
+{
+	Vector3d SpawnerPos(m_PosX + 0.5, m_PosY + 0.5, m_PosZ + 0.5);
+	int NumEntities = 0;
+
+	class cCallback : public cChunkDataCallback
+	{
+	public:
+		cCallback(Vector3d a_SpawnerPos, eMonsterType a_EntityType, int & a_NumEntities) :
+			m_SpawnerPos(a_SpawnerPos),
+			m_EntityType(a_EntityType),
+			m_NumEntities(a_NumEntities)
+		{
+		}
+
+		virtual void Entity(cEntity * a_Entity) override
+		{
+			if (!a_Entity->IsMob())
+			{
+				return;
+			}
+
+			cMonster * Mob = (cMonster *)a_Entity;
+			if (Mob->GetMobType() != m_EntityType)
+			{
+				return;
+			}
+
+			if ((Diff(m_SpawnerPos.x, a_Entity->GetPosX()) <= 8.0) && (Diff(m_SpawnerPos.y, a_Entity->GetPosY()) <= 4.0) && (Diff(m_SpawnerPos.z, a_Entity->GetPosZ()) <= 8.0))
+			{
+				m_NumEntities++;
+			}
+		}
+
+	protected:
+		Vector3d m_SpawnerPos;
+		eMonsterType m_EntityType;
+		int & m_NumEntities;
+	} Callback(SpawnerPos, a_EntityType, NumEntities);
+
+	int ChunkX = GetChunkX();
+	int ChunkZ = GetChunkZ();
+	m_World->ForEachChunkInRect(ChunkX - 1, ChunkX + 1, ChunkZ - 1, ChunkZ + 1, Callback);
+
+	return NumEntities;
+}
+
+
+
+
diff --git a/src/BlockEntities/MobSpawnerEntity.h b/src/BlockEntities/MobSpawnerEntity.h
new file mode 100644
index 000000000..594b5301e
--- /dev/null
+++ b/src/BlockEntities/MobSpawnerEntity.h
@@ -0,0 +1,78 @@
+// MobSpawnerEntity.h
+
+// Declares the cMobSpawnerEntity class representing a single mob spawner in the world
+
+
+
+
+
+#pragma once
+
+#include "BlockEntity.h"
+#include "../Entities/Player.h"
+
+
+
+
+
+// tolua_begin
+
+class cMobSpawnerEntity :
+	public cBlockEntity
+{
+	typedef cBlockEntity super;
+public:
+
+	// tolua_end
+	
+	cMobSpawnerEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
+
+	virtual void SendTo(cClientHandle & a_Client) override;
+	virtual void UsedBy(cPlayer * a_Player) override;
+	virtual bool Tick(float a_Dt, cChunk & a_Chunk) override;
+
+	// tolua_begin
+
+	/** Upate the active flag from the mob spawner. This function will called every 5 seconds from the Tick() function. */
+	void UpdateActiveState(void);
+
+	/** Sets the spawn delay to a new random value. */
+	void ResetTimer(void);
+
+	/** Spawns the entity. This function automaticly change the spawn delay! */
+	void SpawnEntity(void);
+
+	/** Returns the entity type that will be spawn by this mob spawner. */
+	eMonsterType GetEntity(void) const { return m_Entity; }
+
+	/** Sets the entity type who will be spawn by this mob spawner. */
+	void SetEntity(eMonsterType a_EntityType) { m_Entity = a_EntityType; }
+
+	/** Returns the spawn delay. This is the tick delay that is needed to spawn new monsters. */
+	short GetSpawnDelay(void) const { return m_SpawnDelay; }
+
+	/** Sets the spawn delay. */
+	void SetSpawnDelay(short a_Delay) { m_SpawnDelay = a_Delay; }
+
+	/** Returns the amount of the nearby players in a 16-block radius. */
+	int GetNearbyPlayersNum(void);
+
+	/** Returns the amount of this monster type in a 8-block radius (Y: 4-block radius). */
+	int GetNearbyMonsterNum(eMonsterType a_EntityType);
+
+	// tolua_end
+
+	static const char * GetClassStatic(void) { return "cMobSpawnerEntity"; }
+
+private:
+	/** The entity to spawn. */
+	eMonsterType m_Entity;
+
+	short m_SpawnDelay;
+
+	bool m_IsActive;
+} ;  // tolua_end
+
+
+
+
diff --git a/src/BlockEntities/NoteEntity.h b/src/BlockEntities/NoteEntity.h
index fc5f27d07..d3f85e9d2 100644
--- a/src/BlockEntities/NoteEntity.h
+++ b/src/BlockEntities/NoteEntity.h
@@ -5,12 +5,6 @@
 #include "RedstonePoweredEntity.h"
 
 
-namespace Json
-{
-	class Value;
-}
-
-
 
 
 
@@ -40,7 +34,7 @@ public:
 
 	// tolua_end
 
-	BLOCKENTITY_PROTODEF(cNoteEntity);
+	BLOCKENTITY_PROTODEF(cNoteEntity)
 	
 	/// Creates a new note entity. a_World may be nullptr
 	cNoteEntity(int a_X, int a_Y, int a_Z, cWorld * a_World);
diff --git a/src/BlockEntities/SignEntity.h b/src/BlockEntities/SignEntity.h
index 52baa486d..9480537ed 100644
--- a/src/BlockEntities/SignEntity.h
+++ b/src/BlockEntities/SignEntity.h
@@ -14,15 +14,6 @@
 
 
 
-namespace Json
-{
-	class Value;
-}
-
-
-
-
-
 // tolua_begin
 
 class cSignEntity :
@@ -34,7 +25,7 @@ public:
 
 	// tolua_end
 	
-	BLOCKENTITY_PROTODEF(cSignEntity);
+	BLOCKENTITY_PROTODEF(cSignEntity)
 	
 	/// Creates a new empty sign entity at the specified block coords and block type (wall or standing). a_World may be nullptr
 	cSignEntity(BLOCKTYPE a_BlockType, int a_X, int a_Y, int a_Z, cWorld * a_World);
diff --git a/src/BlockID.cpp b/src/BlockID.cpp
index c98e0cad1..06f4232d3 100644
--- a/src/BlockID.cpp
+++ b/src/BlockID.cpp
@@ -200,7 +200,7 @@ public:
 
 
 
-BLOCKTYPE BlockStringToType(const AString & a_BlockTypeString)
+int BlockStringToType(const AString & a_BlockTypeString)
 {
 	int res = atoi(a_BlockTypeString.c_str());
 	if ((res != 0) || (a_BlockTypeString.compare("0") == 0))
diff --git a/src/BlockID.h b/src/BlockID.h
index 24de2dc8a..8f2cee02e 100644
--- a/src/BlockID.h
+++ b/src/BlockID.h
@@ -1096,7 +1096,7 @@ class cIniFile;
 // tolua_begin
 
 /// Translates a blocktype string into blocktype. Takes either a number or an items.ini alias as input. Returns -1 on failure.
-extern BLOCKTYPE BlockStringToType(const AString & a_BlockTypeString);
+extern int BlockStringToType(const AString & a_BlockTypeString);
 
 /// Translates an itemtype string into an item. Takes either a number, number^number, number:number or an items.ini alias as input. Returns true if successful.
 extern bool StringToItem(const AString & a_ItemTypeString, cItem & a_Item);
diff --git a/src/Blocks/BlockBed.h b/src/Blocks/BlockBed.h
index 9fd45644b..a8b5be899 100644
--- a/src/Blocks/BlockBed.h
+++ b/src/Blocks/BlockBed.h
@@ -52,7 +52,10 @@ public:
 	static NIBBLETYPE RotationToMetaData(double a_Rotation)
 	{
 		a_Rotation += 180 + (180 / 4);  // So its not aligned with axis
-		if (a_Rotation > 360) a_Rotation -= 360;
+		if (a_Rotation > 360)
+		{
+			a_Rotation -= 360;
+		}
 
 		a_Rotation = (a_Rotation / 360) * 4;
 
diff --git a/src/Blocks/BlockDoor.cpp b/src/Blocks/BlockDoor.cpp
index 96345a2df..90b7b15c2 100644
--- a/src/Blocks/BlockDoor.cpp
+++ b/src/Blocks/BlockDoor.cpp
@@ -145,7 +145,10 @@ NIBBLETYPE cBlockDoorHandler::MetaMirrorXY(NIBBLETYPE a_Meta)
 	// in only the bottom tile while the hinge position is in the top tile.  This function only operates on one tile at a time,
 	// so the function can only see either the hinge position or orientation, but not both, at any given time.  The class itself
 	// needs extra datamembers.
-	if (a_Meta & 0x08) return a_Meta;
+	if (a_Meta & 0x08)
+	{
+		return a_Meta;
+	}
 
 	// Holds open/closed meta data. 0x0C == 1100.
 	NIBBLETYPE OtherMeta = a_Meta & 0x0C;
@@ -173,7 +176,10 @@ NIBBLETYPE cBlockDoorHandler::MetaMirrorYZ(NIBBLETYPE a_Meta)
 	// so the function can only see either the hinge position or orientation, but not both, at any given time.The class itself
 	// needs extra datamembers.
 
-	if (a_Meta & 0x08) return a_Meta;
+	if (a_Meta & 0x08)
+	{
+		return a_Meta;
+	}
 
 	// Holds open/closed meta data. 0x0C == 1100.
 	NIBBLETYPE OtherMeta = a_Meta & 0x0C;
diff --git a/src/Blocks/BlockMobSpawner.h b/src/Blocks/BlockMobSpawner.h
index a51fbaafc..d5e7c273f 100644
--- a/src/Blocks/BlockMobSpawner.h
+++ b/src/Blocks/BlockMobSpawner.h
@@ -19,6 +19,18 @@ public:
 	}
 
 
+	virtual void OnUse(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer *a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override
+	{
+		a_ChunkInterface.UseBlockEntity(a_Player, a_BlockX, a_BlockY, a_BlockZ);
+	}
+
+
+	virtual bool IsUseable() override
+	{
+		return true;
+	}
+
+
 	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
 	{
 		// No pickups
diff --git a/src/Blocks/BlockRail.h b/src/Blocks/BlockRail.h
index 87ce069ab..21a34d8ce 100644
--- a/src/Blocks/BlockRail.h
+++ b/src/Blocks/BlockRail.h
@@ -151,13 +151,21 @@ public:
 		Neighbors[6] = (IsUnstable(a_ChunkInterface, a_BlockX, a_BlockY + 1, a_BlockZ - 1) || !IsNotConnected(a_ChunkInterface, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_NORTH, E_PURE_NONE));
 		Neighbors[7] = (IsUnstable(a_ChunkInterface, a_BlockX, a_BlockY + 1, a_BlockZ + 1) || !IsNotConnected(a_ChunkInterface, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_SOUTH, E_PURE_NONE));
 		if (IsUnstable(a_ChunkInterface, a_BlockX + 1, a_BlockY - 1, a_BlockZ) || !IsNotConnected(a_ChunkInterface, a_BlockX, a_BlockY - 1, a_BlockZ, BLOCK_FACE_EAST))
+		{
 			Neighbors[0] = true;
+		}
 		if (IsUnstable(a_ChunkInterface, a_BlockX - 1, a_BlockY - 1, a_BlockZ) || !IsNotConnected(a_ChunkInterface, a_BlockX, a_BlockY - 1, a_BlockZ, BLOCK_FACE_WEST))
+		{
 			Neighbors[1] = true;
+		}
 		if (IsUnstable(a_ChunkInterface, a_BlockX, a_BlockY - 1, a_BlockZ - 1) || !IsNotConnected(a_ChunkInterface, a_BlockX, a_BlockY - 1, a_BlockZ, BLOCK_FACE_NORTH))
+		{
 			Neighbors[2] = true;
+		}
 		if (IsUnstable(a_ChunkInterface, a_BlockX, a_BlockY - 1, a_BlockZ + 1) || !IsNotConnected(a_ChunkInterface, a_BlockX, a_BlockY - 1, a_BlockZ, BLOCK_FACE_SOUTH))
+		{
 			Neighbors[3] = true;
+		}
 		for (int i = 0; i < 8; i++)
 		{
 			if (Neighbors[i])
@@ -167,12 +175,30 @@ public:
 		}
 		if (RailsCnt == 1)
 		{
-			if (Neighbors[7]) return E_META_RAIL_ASCEND_ZP;
-			else if (Neighbors[6]) return E_META_RAIL_ASCEND_ZM;
-			else if (Neighbors[5]) return E_META_RAIL_ASCEND_XM;
-			else if (Neighbors[4]) return E_META_RAIL_ASCEND_XP;
-			else if (Neighbors[0] || Neighbors[1]) return E_META_RAIL_XM_XP;
-			else if (Neighbors[2] || Neighbors[3]) return E_META_RAIL_ZM_ZP;
+			if (Neighbors[7])
+			{
+				return E_META_RAIL_ASCEND_ZP;
+			}
+			else if (Neighbors[6])
+			{
+				return E_META_RAIL_ASCEND_ZM;
+			}
+			else if (Neighbors[5])
+			{
+				return E_META_RAIL_ASCEND_XM;
+			}
+			else if (Neighbors[4])
+			{
+				return E_META_RAIL_ASCEND_XP;
+			}
+			else if (Neighbors[0] || Neighbors[1])
+			{
+				return E_META_RAIL_XM_XP;
+			}
+			else if (Neighbors[2] || Neighbors[3])
+			{
+				return E_META_RAIL_ZM_ZP;
+			}
 			ASSERT(!"Weird neighbor count");
 			return Meta;
 		}
@@ -185,16 +211,46 @@ public:
 		}
 		if (RailsCnt > 1)
 		{
-			if      (Neighbors[3] && Neighbors[0] && CanThisRailCurve()) return E_META_RAIL_CURVED_ZP_XP;
-			else if (Neighbors[3] && Neighbors[1] && CanThisRailCurve()) return E_META_RAIL_CURVED_ZP_XM;
-			else if (Neighbors[2] && Neighbors[0] && CanThisRailCurve()) return E_META_RAIL_CURVED_ZM_XP;
-			else if (Neighbors[2] && Neighbors[1] && CanThisRailCurve()) return E_META_RAIL_CURVED_ZM_XM;
-			else if (Neighbors[7] && Neighbors[2]) return E_META_RAIL_ASCEND_ZP;
-			else if (Neighbors[3] && Neighbors[6]) return E_META_RAIL_ASCEND_ZM;
-			else if (Neighbors[5] && Neighbors[0]) return E_META_RAIL_ASCEND_XM;
-			else if (Neighbors[4] && Neighbors[1]) return E_META_RAIL_ASCEND_XP;
-			else if (Neighbors[0] && Neighbors[1]) return E_META_RAIL_XM_XP;
-			else if (Neighbors[2] && Neighbors[3]) return E_META_RAIL_ZM_ZP;
+			if (Neighbors[3] && Neighbors[0] && CanThisRailCurve())
+			{
+				return E_META_RAIL_CURVED_ZP_XP;
+			}
+			else if (Neighbors[3] && Neighbors[1] && CanThisRailCurve())
+			{
+				return E_META_RAIL_CURVED_ZP_XM;
+			}
+			else if (Neighbors[2] && Neighbors[0] && CanThisRailCurve())
+			{
+				return E_META_RAIL_CURVED_ZM_XP;
+			}
+			else if (Neighbors[2] && Neighbors[1] && CanThisRailCurve())
+			{
+				return E_META_RAIL_CURVED_ZM_XM;
+			}
+			else if (Neighbors[7] && Neighbors[2])
+			{
+				return E_META_RAIL_ASCEND_ZP;
+			}
+			else if (Neighbors[3] && Neighbors[6])
+			{
+				return E_META_RAIL_ASCEND_ZM;
+			}
+			else if (Neighbors[5] && Neighbors[0])
+			{
+				return E_META_RAIL_ASCEND_XM;
+			}
+			else if (Neighbors[4] && Neighbors[1])
+			{
+				return E_META_RAIL_ASCEND_XP;
+			}
+			else if (Neighbors[0] && Neighbors[1])
+			{
+				return E_META_RAIL_XM_XP;
+			}
+			else if (Neighbors[2] && Neighbors[3])
+			{
+				return E_META_RAIL_ZM_ZP;
+			}
 
 			if (CanThisRailCurve())
 			{
diff --git a/src/ByteBuffer.cpp b/src/ByteBuffer.cpp
index 012105ca1..080176dcd 100644
--- a/src/ByteBuffer.cpp
+++ b/src/ByteBuffer.cpp
@@ -111,26 +111,36 @@ public:
 
 #ifdef _DEBUG
 
-/// Simple RAII class that uses one internal unsigned long for checking if two threads are using an object simultanously
-class cSingleThreadAccessChecker
-{
-public:
-	cSingleThreadAccessChecker(unsigned long * a_ThreadID) :
-		m_ThreadID(a_ThreadID)
+	/** Simple RAII class that is used for checking that no two threads are using an object simultanously.
+	It requires the monitored object to provide the storage for a thread ID.
+	It uses that storage to check if the thread ID of consecutive calls is the same all the time. */
+	class cSingleThreadAccessChecker
 	{
-		ASSERT((*a_ThreadID == 0) || (*a_ThreadID == cIsThread::GetCurrentID()));
-	}
-	
-	~cSingleThreadAccessChecker()
-	{
-		*m_ThreadID = 0;
-	}
-	
-protected:
-	unsigned long * m_ThreadID;
-} ;
+	public:
+		cSingleThreadAccessChecker(std::thread::id * a_ThreadID) :
+			m_ThreadID(a_ThreadID)
+		{
+			ASSERT(
+				(*a_ThreadID == std::this_thread::get_id()) ||  // Either the object is used by current thread...
+				(*a_ThreadID == std::thread::id())              // ... or by no thread at all
+			);
+
+			// Mark as being used by this thread:
+			*m_ThreadID = std::this_thread::get_id();
+		}
+
+		~cSingleThreadAccessChecker()
+		{
+			// Mark as not being used by any thread:
+			*m_ThreadID = std::thread::id();
+		}
+
+	protected:
+		/** Points to the storage used for ID of the thread using the object. */
+		std::thread::id * m_ThreadID;
+	};
 
-#define CHECK_THREAD cSingleThreadAccessChecker Checker(const_cast<unsigned long *>(&m_ThreadID))
+	#define CHECK_THREAD cSingleThreadAccessChecker Checker(&m_ThreadID);
 
 #else
 	#define CHECK_THREAD
@@ -146,9 +156,6 @@ protected:
 cByteBuffer::cByteBuffer(size_t a_BufferSize) :
 	m_Buffer(new char[a_BufferSize + 1]),
 	m_BufferSize(a_BufferSize + 1),
-	#ifdef _DEBUG
-	m_ThreadID(0),
-	#endif  // _DEBUG
 	m_DataStart(0),
 	m_WritePos(0),
 	m_ReadPos(0)
@@ -174,7 +181,7 @@ cByteBuffer::~cByteBuffer()
 
 bool cByteBuffer::Write(const void * a_Bytes, size_t a_Count)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 
 	// Store the current free space for a check after writing:
@@ -221,7 +228,7 @@ bool cByteBuffer::Write(const void * a_Bytes, size_t a_Count)
 
 size_t cByteBuffer::GetFreeSpace(void) const
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	if (m_WritePos >= m_DataStart)
 	{
@@ -243,7 +250,7 @@ size_t cByteBuffer::GetFreeSpace(void) const
 /// Returns the number of bytes that are currently in the ringbuffer. Note GetReadableBytes()
 size_t cByteBuffer::GetUsedSpace(void) const
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	ASSERT(m_BufferSize >= GetFreeSpace());
 	ASSERT((m_BufferSize - GetFreeSpace()) >= 1);
@@ -257,7 +264,7 @@ size_t cByteBuffer::GetUsedSpace(void) const
 /// Returns the number of bytes that are currently available for reading (may be less than UsedSpace due to some data having been read already)
 size_t cByteBuffer::GetReadableSpace(void) const
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	if (m_ReadPos > m_WritePos)
 	{
@@ -276,7 +283,7 @@ size_t cByteBuffer::GetReadableSpace(void) const
 
 bool cByteBuffer::CanReadBytes(size_t a_Count) const
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	return (a_Count <= GetReadableSpace());
 }
@@ -287,7 +294,7 @@ bool cByteBuffer::CanReadBytes(size_t a_Count) const
 
 bool cByteBuffer::CanWriteBytes(size_t a_Count) const
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	return (a_Count <= GetFreeSpace());
 }
@@ -298,7 +305,7 @@ bool cByteBuffer::CanWriteBytes(size_t a_Count) const
 
 bool cByteBuffer::ReadChar(char & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(1);
 	ReadBuf(&a_Value, 1);
@@ -311,7 +318,7 @@ bool cByteBuffer::ReadChar(char & a_Value)
 
 bool cByteBuffer::ReadByte(unsigned char & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(1);
 	ReadBuf(&a_Value, 1);
@@ -324,7 +331,7 @@ bool cByteBuffer::ReadByte(unsigned char & a_Value)
 
 bool cByteBuffer::ReadBEShort(short & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(2);
 	ReadBuf(&a_Value, 2);
@@ -338,7 +345,7 @@ bool cByteBuffer::ReadBEShort(short & a_Value)
 
 bool cByteBuffer::ReadBEInt(int & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(4);
 	ReadBuf(&a_Value, 4);
@@ -352,7 +359,7 @@ bool cByteBuffer::ReadBEInt(int & a_Value)
 
 bool cByteBuffer::ReadBEInt64(Int64 & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(8);
 	ReadBuf(&a_Value, 8);
@@ -366,7 +373,7 @@ bool cByteBuffer::ReadBEInt64(Int64 & a_Value)
 
 bool cByteBuffer::ReadBEFloat(float & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(4);
 	ReadBuf(&a_Value, 4);
@@ -380,7 +387,7 @@ bool cByteBuffer::ReadBEFloat(float & a_Value)
 
 bool cByteBuffer::ReadBEDouble(double & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(8);
 	ReadBuf(&a_Value, 8);
@@ -394,7 +401,7 @@ bool cByteBuffer::ReadBEDouble(double & a_Value)
 
 bool cByteBuffer::ReadBool(bool & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(1);
 	char Value = 0;
@@ -409,7 +416,7 @@ bool cByteBuffer::ReadBool(bool & a_Value)
 
 bool cByteBuffer::ReadBEUTF16String16(AString & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	short Length;
 	if (!ReadBEShort(Length))
@@ -430,7 +437,7 @@ bool cByteBuffer::ReadBEUTF16String16(AString & a_Value)
 
 bool cByteBuffer::ReadVarInt(UInt32 & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	UInt32 Value = 0;
 	int Shift = 0;
@@ -452,7 +459,7 @@ bool cByteBuffer::ReadVarInt(UInt32 & a_Value)
 
 bool cByteBuffer::ReadVarUTF8String(AString & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	UInt32 Size = 0;
 	if (!ReadVarInt(Size))
@@ -472,7 +479,7 @@ bool cByteBuffer::ReadVarUTF8String(AString & a_Value)
 
 bool cByteBuffer::ReadLEInt(int & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(4);
 	ReadBuf(&a_Value, 4);
@@ -491,6 +498,7 @@ bool cByteBuffer::ReadLEInt(int & a_Value)
 
 bool cByteBuffer::ReadPosition(int & a_BlockX, int & a_BlockY, int & a_BlockZ)
 {
+	CHECK_THREAD
 	Int64 Value;
 	if (!ReadBEInt64(Value))
 	{
@@ -515,7 +523,7 @@ bool cByteBuffer::ReadPosition(int & a_BlockX, int & a_BlockY, int & a_BlockZ)
 
 bool cByteBuffer::WriteChar(char a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(1);
 	return WriteBuf(&a_Value, 1);
@@ -527,7 +535,7 @@ bool cByteBuffer::WriteChar(char a_Value)
 
 bool cByteBuffer::WriteByte(unsigned char a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(1);
 	return WriteBuf(&a_Value, 1);
@@ -539,7 +547,7 @@ bool cByteBuffer::WriteByte(unsigned char a_Value)
 
 bool cByteBuffer::WriteBEShort(short a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(2);
 	u_short Converted = htons((u_short)a_Value);
@@ -552,7 +560,7 @@ bool cByteBuffer::WriteBEShort(short a_Value)
 
 bool cByteBuffer::WriteBEUShort(unsigned short a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(2);
 	u_short Converted = htons((u_short)a_Value);
@@ -565,7 +573,7 @@ bool cByteBuffer::WriteBEUShort(unsigned short a_Value)
 
 bool cByteBuffer::WriteBEInt(int a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(4);
 	UInt32 Converted = HostToNetwork4(&a_Value);
@@ -578,7 +586,7 @@ bool cByteBuffer::WriteBEInt(int a_Value)
 
 bool cByteBuffer::WriteBEInt64(Int64 a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(8);
 	UInt64 Converted = HostToNetwork8(&a_Value);
@@ -591,7 +599,7 @@ bool cByteBuffer::WriteBEInt64(Int64 a_Value)
 
 bool cByteBuffer::WriteBEFloat(float a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(4);
 	UInt32 Converted = HostToNetwork4(&a_Value);
@@ -604,7 +612,7 @@ bool cByteBuffer::WriteBEFloat(float a_Value)
 
 bool cByteBuffer::WriteBEDouble(double a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(8);
 	UInt64 Converted = HostToNetwork8(&a_Value);
@@ -618,7 +626,7 @@ bool cByteBuffer::WriteBEDouble(double a_Value)
 
 bool cByteBuffer::WriteBool(bool a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	return WriteChar(a_Value ? 1 : 0);
 }
@@ -629,7 +637,7 @@ bool cByteBuffer::WriteBool(bool a_Value)
 
 bool cByteBuffer::WriteVarInt(UInt32 a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	
 	// A 32-bit integer can be encoded by at most 5 bytes:
@@ -650,7 +658,7 @@ bool cByteBuffer::WriteVarInt(UInt32 a_Value)
 
 bool cByteBuffer::WriteVarUTF8String(const AString & a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(a_Value.size() + 1);  // This is a lower-bound on the bytes that will be actually written. Fail early.
 	bool res = WriteVarInt((UInt32)(a_Value.size()));
@@ -667,7 +675,7 @@ bool cByteBuffer::WriteVarUTF8String(const AString & a_Value)
 
 bool cByteBuffer::WriteLEInt(int a_Value)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	#ifdef IS_LITTLE_ENDIAN
 		return WriteBuf((const char *)&a_Value, 4);
@@ -683,6 +691,7 @@ bool cByteBuffer::WriteLEInt(int a_Value)
 
 bool cByteBuffer::WritePosition(int a_BlockX, int a_BlockY, int a_BlockZ)
 {
+	CHECK_THREAD
 	return WriteBEInt64(((Int64)a_BlockX & 0x3FFFFFF) << 38 | ((Int64)a_BlockY & 0xFFF) << 26 | ((Int64)a_BlockZ & 0x3FFFFFF));
 }
 
@@ -692,7 +701,7 @@ bool cByteBuffer::WritePosition(int a_BlockX, int a_BlockY, int a_BlockZ)
 
 bool cByteBuffer::ReadBuf(void * a_Buffer, size_t a_Count)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(a_Count);
 	char * Dst = (char *)a_Buffer;  // So that we can do byte math
@@ -725,7 +734,7 @@ bool cByteBuffer::ReadBuf(void * a_Buffer, size_t a_Count)
 
 bool cByteBuffer::WriteBuf(const void * a_Buffer, size_t a_Count)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(a_Count);
 	char * Src = (char *)a_Buffer;  // So that we can do byte math
@@ -755,7 +764,7 @@ bool cByteBuffer::WriteBuf(const void * a_Buffer, size_t a_Count)
 
 bool cByteBuffer::ReadString(AString & a_String, size_t a_Count)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(a_Count);
 	a_String.clear();
@@ -790,7 +799,7 @@ bool cByteBuffer::ReadString(AString & a_String, size_t a_Count)
 bool cByteBuffer::ReadUTF16String(AString & a_String, size_t a_NumChars)
 {
 	// Reads 2 * a_NumChars bytes and interprets it as a UTF16 string, converting it into UTF8 string a_String
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	AString RawData;
 	if (!ReadString(RawData, a_NumChars * 2))
@@ -807,7 +816,7 @@ bool cByteBuffer::ReadUTF16String(AString & a_String, size_t a_NumChars)
 
 bool cByteBuffer::SkipRead(size_t a_Count)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	if (!CanReadBytes(a_Count))
 	{
@@ -823,7 +832,7 @@ bool cByteBuffer::SkipRead(size_t a_Count)
 
 void cByteBuffer::ReadAll(AString & a_Data)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	ReadString(a_Data, GetReadableSpace());
 }
@@ -834,6 +843,7 @@ void cByteBuffer::ReadAll(AString & a_Data)
 
 bool cByteBuffer::ReadToByteBuffer(cByteBuffer & a_Dst, size_t a_NumBytes)
 {
+	CHECK_THREAD
 	if (!a_Dst.CanWriteBytes(a_NumBytes) || !CanReadBytes(a_NumBytes))
 	{
 		// There's not enough source bytes or space in the dest BB
@@ -858,7 +868,7 @@ bool cByteBuffer::ReadToByteBuffer(cByteBuffer & a_Dst, size_t a_NumBytes)
 
 void cByteBuffer::CommitRead(void)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	m_DataStart = m_ReadPos;
 }
@@ -869,7 +879,7 @@ void cByteBuffer::CommitRead(void)
 
 void cByteBuffer::ResetRead(void)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	m_ReadPos = m_DataStart;
 }
@@ -882,7 +892,7 @@ void cByteBuffer::ReadAgain(AString & a_Out)
 {
 	// Return the data between m_DataStart and m_ReadPos (the data that has been read but not committed)
 	// Used by ProtoProxy to repeat communication twice, once for parsing and the other time for the remote party
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	size_t DataStart = m_DataStart;
 	if (m_ReadPos < m_DataStart)
@@ -902,7 +912,7 @@ void cByteBuffer::ReadAgain(AString & a_Out)
 
 void cByteBuffer::AdvanceReadPos(size_t a_Count)
 {
-	CHECK_THREAD;
+	CHECK_THREAD
 	CheckValid();
 	m_ReadPos += a_Count;
 	if (m_ReadPos >= m_BufferSize)
diff --git a/src/ByteBuffer.h b/src/ByteBuffer.h
index 70de419f0..2a316fa32 100644
--- a/src/ByteBuffer.h
+++ b/src/ByteBuffer.h
@@ -130,13 +130,15 @@ protected:
 	char * m_Buffer;
 	size_t m_BufferSize;  // Total size of the ringbuffer
 	
-	#ifdef _DEBUG
-	volatile unsigned long m_ThreadID;  // Thread that is currently accessing the object, checked via cSingleThreadAccessChecker
-	#endif  // _DEBUG
-	
 	size_t m_DataStart;  // Where the data starts in the ringbuffer
 	size_t m_WritePos;   // Where the data ends in the ringbuffer
 	size_t m_ReadPos;    // Where the next read will start in the ringbuffer
+
+	#ifdef _DEBUG
+		/** The ID of the thread currently accessing the object.
+		Used for checking that only one thread accesses the object at a time, via cSingleThreadAccessChecker. */
+		mutable std::thread::id m_ThreadID;
+	#endif
 	
 	/** Advances the m_ReadPos by a_Count bytes */
 	void AdvanceReadPos(size_t a_Count);
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 096fa824d..997326cc7 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -9,6 +9,7 @@ include_directories (SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/../lib/polarssl/include
 set(FOLDERS
 	OSSupport HTTPServer Items Blocks Protocol Generating PolarSSL++ Bindings
 	WorldStorage Mobs Entities Simulator UI BlockEntities Generating/Prefabs
+	Noise
 )
 
 SET (SRCS
@@ -50,7 +51,6 @@ SET (SRCS
 	MobProximityCounter.cpp
 	MobSpawner.cpp
 	MonsterConfig.cpp
-	Noise.cpp
 	ProbabDistrib.cpp
 	RankManager.cpp
 	RCONServer.cpp
@@ -65,7 +65,8 @@ SET (SRCS
 	VoronoiMap.cpp
 	WebAdmin.cpp
 	World.cpp
-	main.cpp)
+	main.cpp
+)
 
 SET (HDRS
 	AllocationPool.h
@@ -103,7 +104,6 @@ SET (HDRS
 	Inventory.h
 	Item.h
 	ItemGrid.h
-	LeakFinder.h
 	LightingThread.h
 	LineBlockTracer.h
 	LinearInterpolation.h
@@ -113,14 +113,11 @@ SET (HDRS
 	Map.h
 	MapManager.h
 	Matrix4.h
-	MemoryLeak.h
-	MersenneTwister.h
 	MobCensus.h
 	MobFamilyCollecter.h
 	MobProximityCounter.h
 	MobSpawner.h
 	MonsterConfig.h
-	Noise.h
 	ProbabDistrib.h
 	RankManager.h
 	RCONServer.h
@@ -128,7 +125,6 @@ SET (HDRS
 	Scoreboard.h
 	Server.h
 	SetChunkData.h
-	StackWalker.h
 	Statistics.h
 	StringCompression.h
 	StringUtils.h
@@ -137,7 +133,8 @@ SET (HDRS
 	VoronoiMap.h
 	WebAdmin.h
 	World.h
-	XMLParser.h)
+	XMLParser.h
+)
 
 include_directories(".")
 include_directories ("${CMAKE_CURRENT_SOURCE_DIR}/../lib/sqlite")
@@ -175,6 +172,10 @@ if (NOT MSVC)
 else ()
 	# MSVC-specific handling: Put all files into one project, separate by the folders:
 
+	# Add the MSVC-specific LeakFinder sources:
+	list (APPEND SRCS LeakFinder.cpp StackWalker.cpp)
+	list (APPEND HDRS LeakFinder.h StackWalker.h MemoryLeak.h)
+
 	source_group(Bindings FILES "Bindings/Bindings.cpp" "Bindings/Bindings.h")
 
 	# Add all subfolders as solution-folders:
@@ -224,7 +225,7 @@ else ()
 		Bindings/Bindings.cpp PROPERTIES COMPILE_FLAGS "/Yc\"string.h\" /Fp\"$(IntDir)/Bindings.pch\""
 	)
 	SET_SOURCE_FILES_PROPERTIES(
-		"StackWalker.cpp LeakFinder.h" PROPERTIES COMPILE_FLAGS "/Yc\"Globals.h\""
+		"StackWalker.cpp LeakFinder.cpp" PROPERTIES COMPILE_FLAGS "/Yc\"Globals.h\""
 	)
 	list(APPEND SOURCE "Resources/MCServer.rc")
 
@@ -314,7 +315,7 @@ endif ()
 
 if (NOT MSVC)
 	target_link_libraries(${EXECUTABLE}
-		OSSupport HTTPServer Bindings Items Blocks
+		OSSupport HTTPServer Bindings Items Blocks Noise
 		Protocol Generating Generating_Prefabs WorldStorage
 		Mobs Entities Simulator UI BlockEntities PolarSSL++
 	)
diff --git a/src/CheckBasicStyle.lua b/src/CheckBasicStyle.lua
index 76ae8c325..0c7b05d6d 100644
--- a/src/CheckBasicStyle.lua
+++ b/src/CheckBasicStyle.lua
@@ -92,6 +92,25 @@ end
 
 local g_ViolationPatterns =
 {
+	-- Parenthesis around comparisons:
+	{"==[^)]+&&",     "Add parenthesis around comparison"},
+	{"&&[^(]+==",     "Add parenthesis around comparison"},
+	{"==[^)]+||",     "Add parenthesis around comparison"},
+	{"||[^(]+==",     "Add parenthesis around comparison"},
+	{"!=[^)]+&&",     "Add parenthesis around comparison"},
+	{"&&[^(]+!=",     "Add parenthesis around comparison"},
+	{"!=[^)]+||",     "Add parenthesis around comparison"},
+	{"||[^(]+!=",     "Add parenthesis around comparison"},
+	{"<[^)T][^)]*&&", "Add parenthesis around comparison"},  -- Must take special care of templates: "template <T> fn(Args && ...)"
+	{"&&[^(]+<",      "Add parenthesis around comparison"},
+	{"<[^)T][^)]*||", "Add parenthesis around comparison"},  -- Must take special care of templates: "template <T> fn(Args && ...)"
+	{"||[^(]+<",      "Add parenthesis around comparison"},
+	-- Cannot check ">" because of "obj->m_Flag &&". Check at least ">=":
+	{">=[^)]+&&",     "Add parenthesis around comparison"},
+	{"&&[^(]+>=",     "Add parenthesis around comparison"},
+	{">=[^)]+||",     "Add parenthesis around comparison"},
+	{"||[^(]+>=",     "Add parenthesis around comparison"},
+
 	-- Check against indenting using spaces:
 	{"^\t* +", "Indenting with a space"},
 	
@@ -116,11 +135,11 @@ local g_ViolationPatterns =
 	
 	-- Space after keywords:
 	{"[^_]if%(", "Needs a space after \"if\""},
-	{"for%(", "Needs a space after \"for\""},
-	{"while%(", "Needs a space after \"while\""},
-	{"switch%(", "Needs a space after \"switch\""},
-	{"catch%(", "Needs a space after \"catch\""},
-	{"template<", "Needs a space after \"template\""},
+	{"%sfor%(", "Needs a space after \"for\""},
+	{"%swhile%(", "Needs a space after \"while\""},
+	{"%sswitch%(", "Needs a space after \"switch\""},
+	{"%scatch%(", "Needs a space after \"catch\""},
+	{"%stemplate<", "Needs a space after \"template\""},
 	
 	-- No space after keyword's parenthesis:
 	{"[^%a#]if %( ", "Remove the space after \"(\""},
@@ -162,6 +181,7 @@ local function ProcessFile(a_FileName)
 	-- Ref.: http://stackoverflow.com/questions/10416869/iterate-over-possibly-empty-lines-in-a-way-that-matches-the-expectations-of-exis
 	local lineCounter = 1
 	local lastIndentLevel = 0
+	local isLastLineControl = false
 	all:gsub("\r\n", "\n")  -- normalize CRLF into LF-only
 	string.gsub(all .. "\n", "[^\n]*\n",  -- Iterate over each line, while preserving empty lines
 		function(a_Line)
@@ -198,6 +218,24 @@ local function ProcessFile(a_FileName)
 				end
 				lastIndentLevel = indentLevel
 			end
+			
+			-- Check that control statements have braces on separate lines after them:
+			-- Note that if statements can be broken into multiple lines, in which case this test is not taken
+			if (isLastLineControl) then
+				if not(a_Line:find("^%s*{") or a_Line:find("^%s*#")) then
+					-- Not followed by a brace, not followed by a preprocessor
+					ReportViolation(a_FileName, lineCounter - 1, 1, 1, "Control statement needs a brace on separate line")
+				end
+			end
+			local lineWithSpace = " " .. a_Line
+			isLastLineControl =
+				lineWithSpace:find("^%s+if %b()") or
+				lineWithSpace:find("^%s+else if %b()") or
+				lineWithSpace:find("^%s+for %b()") or
+				lineWithSpace:find("^%s+switch %b()") or
+				lineWithSpace:find("^%s+else\n") or
+				lineWithSpace:find("^%s+else  //") or
+				lineWithSpace:find("^%s+do %b()")
 
 			lineCounter = lineCounter + 1
 		end
@@ -227,6 +265,9 @@ end
 
 
 
+-- Remove buffering from stdout, so that the output appears immediately in IDEs:
+io.stdout:setvbuf("no")
+
 -- Process all files in the AllFiles.lst file (generated by cmake):
 for fnam in io.lines("AllFiles.lst") do
 	ProcessItem(fnam)
diff --git a/src/Chunk.cpp b/src/Chunk.cpp
index a0224322a..017ceda26 100644
--- a/src/Chunk.cpp
+++ b/src/Chunk.cpp
@@ -16,18 +16,18 @@
 #include "BlockEntities/ChestEntity.h"
 #include "BlockEntities/DispenserEntity.h"
 #include "BlockEntities/DropperEntity.h"
+#include "BlockEntities/FlowerPotEntity.h"
 #include "BlockEntities/FurnaceEntity.h"
 #include "BlockEntities/HopperEntity.h"
 #include "BlockEntities/JukeboxEntity.h"
+#include "BlockEntities/MobHeadEntity.h"
+#include "BlockEntities/MobSpawnerEntity.h"
 #include "BlockEntities/NoteEntity.h"
 #include "BlockEntities/SignEntity.h"
-#include "BlockEntities/MobHeadEntity.h"
-#include "BlockEntities/FlowerPotEntity.h"
 #include "Entities/Pickup.h"
 #include "Item.h"
-#include "Noise.h"
+#include "Noise/Noise.h"
 #include "Root.h"
-#include "MersenneTwister.h"
 #include "Entities/Player.h"
 #include "BlockArea.h"
 #include "Bindings/PluginManager.h"
@@ -1348,6 +1348,7 @@ void cChunk::CreateBlockEntities(void)
 					case E_BLOCK_NOTE_BLOCK:
 					case E_BLOCK_JUKEBOX:
 					case E_BLOCK_FLOWER_POT:
+					case E_BLOCK_MOB_SPAWNER:
 					{
 						if (!HasBlockEntityAt(x + m_PosX * Width, y, z + m_PosZ * Width))
 						{
@@ -1479,6 +1480,7 @@ void cChunk::SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType,
 		case E_BLOCK_NOTE_BLOCK:
 		case E_BLOCK_JUKEBOX:
 		case E_BLOCK_FLOWER_POT:
+		case E_BLOCK_MOB_SPAWNER:
 		{
 			AddBlockEntity(cBlockEntity::CreateByBlockType(a_BlockType, a_BlockMeta, WorldPos.x, WorldPos.y, WorldPos.z, m_World));
 			break;
@@ -1869,18 +1871,18 @@ bool cChunk::AddClient(cClientHandle * a_Client)
 
 void cChunk::RemoveClient(cClientHandle * a_Client)
 {
-	for (cClientHandleList::iterator itr = m_LoadedByClient.begin(); itr != m_LoadedByClient.end(); ++itr)
+	for (cClientHandleList::iterator itrC = m_LoadedByClient.begin(); itrC != m_LoadedByClient.end(); ++itrC)
 	{
-		if (*itr != a_Client)
+		if (*itrC != a_Client)
 		{
 			continue;
 		}
 
-		m_LoadedByClient.erase(itr);
+		m_LoadedByClient.erase(itrC);
 
 		if (!a_Client->IsDestroyed())
 		{
-			for (cEntityList::iterator itr = m_Entities.begin(); itr != m_Entities.end(); ++itr)
+			for (cEntityList::iterator itrE = m_Entities.begin(); itrE != m_Entities.end(); ++itrE)
 			{
 				/*
 				// DEBUG:
@@ -1889,7 +1891,7 @@ void cChunk::RemoveClient(cClientHandle * a_Client)
 					(*itr)->GetUniqueID(), a_Client->GetUsername().c_str()
 				);
 				*/
-				a_Client->SendDestroyEntity(*(*itr));
+				a_Client->SendDestroyEntity(*(*itrE));
 			}
 		}
 		return;
diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index 94bace43a..c4a620565 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -16,7 +16,6 @@
 #include "Mobs/Monster.h"
 #include "ChatColor.h"
 #include "OSSupport/Socket.h"
-#include "OSSupport/Timer.h"
 #include "Items/ItemHandler.h"
 #include "Blocks/BlockHandler.h"
 #include "Blocks/BlockSlab.h"
@@ -25,8 +24,6 @@
 #include "Root.h"
 
 #include "Protocol/Authenticator.h"
-#include "MersenneTwister.h"
-
 #include "Protocol/ProtocolRecognizer.h"
 #include "CompositeChat.h"
 #include "Items/ItemSword.h"
@@ -41,18 +38,13 @@
 /** Maximum number of block change interactions a player can perform per tick - exceeding this causes a kick */
 #define MAX_BLOCK_CHANGE_INTERACTIONS 20
 
+/** The interval for sending pings to clients.
+Vanilla sends one ping every 1 second. */
+static const std::chrono::milliseconds PING_TIME_MS = std::chrono::milliseconds(1000);
 
 
 
 
-#define RECI_RAND_MAX (1.f/RAND_MAX)
-inline int fRadRand(MTRand & r1, int a_BlockCoord)
-{
-	return a_BlockCoord * 32 + (int)(16 * ((float)r1.rand() * RECI_RAND_MAX) * 16 - 8);
-}
-
-
-
 
 
 int cClientHandle::s_ClientCount = 0;
@@ -65,7 +57,8 @@ int cClientHandle::s_ClientCount = 0;
 // cClientHandle:
 
 cClientHandle::cClientHandle(const cSocket * a_Socket, int a_ViewDistance) :
-	m_ViewDistance(a_ViewDistance),
+	m_CurrentViewDistance(a_ViewDistance),
+	m_RequestedViewDistance(a_ViewDistance),
 	m_IPString(a_Socket->GetIPString()),
 	m_OutgoingData(64 KiB),
 	m_Player(nullptr),
@@ -75,8 +68,6 @@ cClientHandle::cClientHandle(const cSocket * a_Socket, int a_ViewDistance) :
 	m_TimeSinceLastPacket(0),
 	m_Ping(1000),
 	m_PingID(1),
-	m_PingStartTime(0),
-	m_LastPingTime(1000),
 	m_BlockDigAnimStage(-1),
 	m_BlockDigAnimSpeed(0),
 	m_BlockDigAnimX(0),
@@ -93,15 +84,14 @@ cClientHandle::cClientHandle(const cSocket * a_Socket, int a_ViewDistance) :
 	m_UniqueID(0),
 	m_HasSentPlayerChunk(false),
 	m_Locale("en_GB"),
+	m_LastPlacedSign(0, -1, 0),
 	m_ProtocolVersion(0)
 {
 	m_Protocol = new cProtocolRecognizer(this);
 	
 	s_ClientCount++;  // Not protected by CS because clients are always constructed from the same thread
 	m_UniqueID = s_ClientCount;
-
-	cTimer t1;
-	m_LastPingTime = t1.GetNowTime();
+	m_PingStartTime = std::chrono::steady_clock::now();
 
 	LOGD("New ClientHandle created at %p", this);
 }
@@ -197,9 +187,13 @@ void cClientHandle::GenerateOfflineUUID(void)
 AString cClientHandle::FormatChatPrefix(bool ShouldAppendChatPrefixes, AString a_ChatPrefixS, AString m_Color1, AString m_Color2)
 {
 	if (ShouldAppendChatPrefixes)
+	{
 		return Printf("%s[%s] %s", m_Color1.c_str(), a_ChatPrefixS.c_str(), m_Color2.c_str());
+	}
 	else
+	{
 		return Printf("%s", m_Color1.c_str());
+	}
 }
 
 
@@ -395,8 +389,7 @@ void cClientHandle::Authenticate(const AString & a_Name, const AString & a_UUID,
 
 	// Delay the first ping until the client "settles down"
 	// This should fix #889, "BadCast exception, cannot convert bit to fm" error in client
-	cTimer t1;
-	m_LastPingTime = t1.GetNowTime() + 3000;  // Send the first KeepAlive packet in 3 seconds
+	m_PingStartTime = std::chrono::steady_clock::now() + std::chrono::seconds(3);  // Send the first KeepAlive packet in 3 seconds
 
 	cRoot::Get()->GetPluginManager()->CallHookPlayerSpawned(*m_Player);
 }
@@ -430,7 +423,7 @@ bool cClientHandle::StreamNextChunk(void)
 	cCSLock Lock(m_CSChunkLists);
 
 	// High priority: Load the chunks that are in the view-direction of the player (with a radius of 3)
-	for (int Range = 0; Range < m_ViewDistance; Range++)
+	for (int Range = 0; Range < m_CurrentViewDistance; Range++)
 	{
 		Vector3d Vector = Position + LookVector * cChunkDef::Width * Range;
 
@@ -447,7 +440,7 @@ bool cClientHandle::StreamNextChunk(void)
 				cChunkCoords Coords(ChunkX, ChunkZ);
 
 				// Checks if the chunk is in distance
-				if ((Diff(ChunkX, ChunkPosX) > m_ViewDistance) || (Diff(ChunkZ, ChunkPosZ) > m_ViewDistance))
+				if ((Diff(ChunkX, ChunkPosX) > m_CurrentViewDistance) || (Diff(ChunkZ, ChunkPosZ) > m_CurrentViewDistance))
 				{
 					continue;
 				}
@@ -470,7 +463,7 @@ bool cClientHandle::StreamNextChunk(void)
 	}
 
 	// Low priority: Add all chunks that are in range. (From the center out to the edge)
-	for (int d = 0; d <= m_ViewDistance; ++d)  // cycle through (square) distance, from nearest to furthest
+	for (int d = 0; d <= m_CurrentViewDistance; ++d)  // cycle through (square) distance, from nearest to furthest
 	{
 		// For each distance add chunks in a hollow square centered around current position:
 		cChunkCoordsList CurcleChunks;
@@ -528,7 +521,7 @@ void cClientHandle::UnloadOutOfRangeChunks(void)
 		{
 			int DiffX = Diff((*itr).m_ChunkX, ChunkPosX);
 			int DiffZ = Diff((*itr).m_ChunkZ, ChunkPosZ);
-			if ((DiffX > m_ViewDistance) || (DiffZ > m_ViewDistance))
+			if ((DiffX > m_CurrentViewDistance) || (DiffZ > m_CurrentViewDistance))
 			{
 				ChunksToRemove.push_back(*itr);
 				itr = m_LoadedChunks.erase(itr);
@@ -543,7 +536,7 @@ void cClientHandle::UnloadOutOfRangeChunks(void)
 		{
 			int DiffX = Diff((*itr).m_ChunkX, ChunkPosX);
 			int DiffZ = Diff((*itr).m_ChunkZ, ChunkPosZ);
-			if ((DiffX > m_ViewDistance) || (DiffZ > m_ViewDistance))
+			if ((DiffX > m_CurrentViewDistance) || (DiffZ > m_CurrentViewDistance))
 			{
 				itr = m_ChunksToSend.erase(itr);
 			}
@@ -1236,12 +1229,18 @@ void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, e
 {
 	// TODO: Rewrite this function
 
-	LOGD("HandleRightClick: {%d, %d, %d}, face %d, HeldItem: %s",
-		a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, ItemToFullString(a_HeldItem).c_str()
+	// Distance from the block's center to the player's eye height
+	double dist = (Vector3d(a_BlockX, a_BlockY, a_BlockZ) + Vector3d(0.5, 0.5, 0.5) - m_Player->GetEyePosition()).Length();
+	LOGD("HandleRightClick: {%d, %d, %d}, face %d, HeldItem: %s; dist: %.02f",
+		a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, ItemToFullString(a_HeldItem).c_str(), dist
 	);
-	
+
+	// Check the reach distance:
+	// _X 2014-11-25: I've maxed at 5.26 with a Survival client and 5.78 with a Creative client in my tests
+	double maxDist = m_Player->IsGameModeCreative() ? 5.78 : 5.26;
+	bool AreRealCoords = (dist <= maxDist);
+
 	cWorld * World = m_Player->GetWorld();
-	bool AreRealCoords = (Vector3d(a_BlockX, a_BlockY, a_BlockZ) - m_Player->GetPosition()).Length() <= 5;
 
 	if (
 		(a_BlockFace != BLOCK_FACE_NONE) &&  // The client is interacting with a specific block
@@ -1500,6 +1499,7 @@ void cClientHandle::HandlePlaceBlock(int a_BlockX, int a_BlockY, int a_BlockZ, e
 	{
 		m_Player->GetInventory().RemoveOneEquippedItem();
 	}
+
 	cChunkInterface ChunkInterface(World->GetChunkMap());
 	NewBlock->OnPlacedByPlayer(ChunkInterface, *World, m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, BlockType, BlockMeta);
 	
@@ -1677,8 +1677,11 @@ void cClientHandle::HandleUpdateSign(
 	const AString & a_Line3, const AString & a_Line4
 )
 {
-	cWorld * World = m_Player->GetWorld();
-	World->UpdateSign(a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4, m_Player);
+	if (m_LastPlacedSign.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
+	{
+		m_LastPlacedSign.Set(0, -1, 0);
+		m_Player->GetWorld()->SetSignLines(a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4, m_Player);
+	}
 }
 
 
@@ -1767,8 +1770,7 @@ void cClientHandle::HandleKeepAlive(int a_KeepAliveID)
 {
 	if (a_KeepAliveID == m_PingID)
 	{
-		cTimer t1;
-		m_Ping = (short)((t1.GetNowTime() - m_PingStartTime) / 2);
+		m_Ping = std::chrono::steady_clock::now() - m_PingStartTime;
 	}
 }
 
@@ -1993,13 +1995,11 @@ void cClientHandle::Tick(float a_Dt)
 	// Send a ping packet:
 	if (m_State == csPlaying)
 	{
-		cTimer t1;
-		if ((m_LastPingTime + cClientHandle::PING_TIME_MS <= t1.GetNowTime()))
+		if ((m_PingStartTime + PING_TIME_MS <= std::chrono::steady_clock::now()))
 		{
 			m_PingID++;
-			m_PingStartTime = t1.GetNowTime();
+			m_PingStartTime = std::chrono::steady_clock::now();
 			m_Protocol->SendKeepAlive(m_PingID);
-			m_LastPingTime = m_PingStartTime;
 		}
 	}
 
@@ -2257,6 +2257,7 @@ void cClientHandle::SendDisconnect(const AString & a_Reason)
 
 void cClientHandle::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
 {
+	m_LastPlacedSign.Set(a_BlockX, a_BlockY, a_BlockZ);
 	m_Protocol->SendEditSign(a_BlockX, a_BlockY, a_BlockZ);
 }
 
@@ -2847,8 +2848,15 @@ void cClientHandle::SetUsername( const AString & a_Username)
 
 void cClientHandle::SetViewDistance(int a_ViewDistance)
 {
-	m_ViewDistance = Clamp(a_ViewDistance, MIN_VIEW_DISTANCE, MAX_VIEW_DISTANCE);
-	LOGD("Setted %s's view distance to %i", GetUsername().c_str(), m_ViewDistance);
+	m_RequestedViewDistance = a_ViewDistance;
+	LOGD("%s is requesting ViewDistance of %d!", GetUsername().c_str(), m_RequestedViewDistance);
+
+	// Set the current view distance based on the requested VD and world max VD:
+	cWorld * world = m_Player->GetWorld();
+	if (world != nullptr)
+	{
+		m_CurrentViewDistance = Clamp(a_ViewDistance, cClientHandle::MIN_VIEW_DISTANCE, world->GetMaxViewDistance());
+	}
 }
 
 
diff --git a/src/ClientHandle.h b/src/ClientHandle.h
index 082ed2fcc..495348ac3 100644
--- a/src/ClientHandle.h
+++ b/src/ClientHandle.h
@@ -215,11 +215,17 @@ public:
 	const AString & GetUsername(void) const;
 	void SetUsername( const AString & a_Username);
 	
-	inline short GetPing(void) const { return m_Ping; }
+	inline short GetPing(void) const { return static_cast<short>(std::chrono::duration_cast<std::chrono::milliseconds>(m_Ping).count()); }
 	
+	/** Sets the maximal view distance. */
 	void SetViewDistance(int a_ViewDistance);
-	int  GetViewDistance(void) const { return m_ViewDistance; }
-	
+
+	/** Returns the view distance that the player currently have. */
+	int GetViewDistance(void) const { return m_CurrentViewDistance; }
+
+	/** Returns the view distance that the player request, not the used view distance. */
+	int GetRequestedViewDistance(void) const { return m_RequestedViewDistance; }
+
 	void SetLocale(AString & a_Locale) { m_Locale = a_Locale; }
 	AString GetLocale(void) const { return m_Locale; }
 
@@ -333,12 +339,12 @@ private:
 	/** The type used for storing the names of registered plugin channels. */
 	typedef std::set<AString> cChannels;
 
-	/** Number of chunks the player can see in each direction */
-	int m_ViewDistance;
-	
-	/** Server generates this many chunks AHEAD of player sight. */
-	static const int GENERATEDISTANCE = 2;
-	
+	/** The actual view distance used, the minimum of client's requested view distance and world's max view distance. */
+	int m_CurrentViewDistance;
+
+	/** The requested view distance from the player. It isn't clamped with 1 and the max view distance of the world. */
+	int m_RequestedViewDistance;
+
 	AString m_IPString;
 
 	AString m_Username;
@@ -372,12 +378,15 @@ private:
 	/** Seconds since the last packet data was received (updated in Tick(), reset in DataReceived()) */
 	float m_TimeSinceLastPacket;
 	
-	short m_Ping;
-	int   m_PingID;
-	long long m_PingStartTime;
-	long long m_LastPingTime;
-	static const unsigned short PING_TIME_MS = 1000;  // Vanilla sends 1 per 20 ticks (1 second or every 1000 ms)
-	
+	/** Duration of the last completed client ping. */
+	std::chrono::steady_clock::duration m_Ping;
+
+	/** ID of the last ping request sent to the client. */
+	int m_PingID;
+
+	/** Time of the last ping request sent to the client. */
+	std::chrono::steady_clock::time_point m_PingStartTime;
+
 	// Values required for block dig animation
 	int m_BlockDigAnimStage;  // Current stage of the animation; -1 if not digging
 	int m_BlockDigAnimSpeed;  // Current speed of the animation (units ???)
@@ -432,6 +441,9 @@ private:
 
 	/** Client Settings */
 	AString m_Locale;
+
+	/** The positions from the last sign that the player placed. It's needed to verify the sign text change. */
+	Vector3i m_LastPlacedSign;
 	
 	/** The plugin channels that the client has registered. */
 	cChannels m_PluginChannels;
diff --git a/src/CraftingRecipes.cpp b/src/CraftingRecipes.cpp
index 64fb21181..202fb900e 100644
--- a/src/CraftingRecipes.cpp
+++ b/src/CraftingRecipes.cpp
@@ -289,12 +289,12 @@ void cCraftingRecipes::GetRecipe(cPlayer & a_Player, cCraftingGrid & a_CraftingG
 	}
 	
 	// Built-in recipes:
-	std::auto_ptr<cRecipe> Recipe(FindRecipe(a_CraftingGrid.GetItems(), a_CraftingGrid.GetWidth(), a_CraftingGrid.GetHeight()));
+	std::unique_ptr<cRecipe> Recipe(FindRecipe(a_CraftingGrid.GetItems(), a_CraftingGrid.GetWidth(), a_CraftingGrid.GetHeight()));
 	a_Recipe.Clear();
 	if (Recipe.get() == nullptr)
 	{
 		// Allow plugins to intercept a no-recipe-found situation:
-		cRoot::Get()->GetPluginManager()->CallHookCraftingNoRecipe(a_Player, a_CraftingGrid, &a_Recipe);
+		cRoot::Get()->GetPluginManager()->CallHookCraftingNoRecipe(a_Player, a_CraftingGrid, a_Recipe);
 		return;
 	}
 	for (cRecipeSlots::const_iterator itr = Recipe->m_Ingredients.begin(); itr != Recipe->m_Ingredients.end(); ++itr)
@@ -377,7 +377,7 @@ void cCraftingRecipes::AddRecipeLine(int a_LineNum, const AString & a_RecipeLine
 		return;
 	}
 	
-	std::auto_ptr<cCraftingRecipes::cRecipe> Recipe(new cCraftingRecipes::cRecipe);
+	std::unique_ptr<cCraftingRecipes::cRecipe> Recipe(new cCraftingRecipes::cRecipe);
 	
 	// Parse the result:
 	AStringVector ResultSplit = StringSplit(Sides[0], ",");
@@ -758,7 +758,7 @@ cCraftingRecipes::cRecipe * cCraftingRecipes::MatchRecipe(const cItem * a_Crafti
 	}  // for y, for x
 	
 	// The recipe has matched. Create a copy of the recipe and set its coords to match the crafting grid:
-	std::auto_ptr<cRecipe> Recipe(new cRecipe);
+	std::unique_ptr<cRecipe> Recipe(new cRecipe);
 	Recipe->m_Result = a_Recipe->m_Result;
 	Recipe->m_Width  = a_Recipe->m_Width;
 	Recipe->m_Height = a_Recipe->m_Height;
diff --git a/src/DeadlockDetect.cpp b/src/DeadlockDetect.cpp
index 7f703416c..3bb897221 100644
--- a/src/DeadlockDetect.cpp
+++ b/src/DeadlockDetect.cpp
@@ -13,7 +13,7 @@
 
 
 
-/// Number of milliseconds per cycle
+/** Number of milliseconds per cycle */
 const int CYCLE_MILLISECONDS = 100;
 
 
@@ -87,7 +87,7 @@ void cDeadlockDetect::Execute(void)
 		} Checker(this);
 		cRoot::Get()->ForEachWorld(Checker);
 		
-		cSleep::MilliSleep(CYCLE_MILLISECONDS);
+		std::this_thread::sleep_for(std::chrono::milliseconds(CYCLE_MILLISECONDS));
 	}  // while (should run)
 }
 
@@ -119,7 +119,7 @@ void cDeadlockDetect::CheckWorldAge(const AString & a_WorldName, Int64 a_Age)
 	if (WorldAge.m_Age == a_Age)
 	{
 		WorldAge.m_NumCyclesSame += 1;
-		if (WorldAge.m_NumCyclesSame > (1000 * m_IntervalSec) / CYCLE_MILLISECONDS)
+		if (WorldAge.m_NumCyclesSame > (m_IntervalSec * 1000) / CYCLE_MILLISECONDS)
 		{
 			DeadlockDetected();
 		}
diff --git a/src/DeadlockDetect.h b/src/DeadlockDetect.h
index 6aa98acbb..57027e923 100644
--- a/src/DeadlockDetect.h
+++ b/src/DeadlockDetect.h
@@ -28,7 +28,7 @@ class cDeadlockDetect :
 public:
 	cDeadlockDetect(void);
 	
-	/// Starts the detection. Hides cIsThread's Start, because we need some initialization
+	/** Starts the detection. Hides cIsThread's Start, because we need some initialization */
 	bool Start(int a_IntervalSec);
 	
 protected:
diff --git a/src/Enchantments.cpp b/src/Enchantments.cpp
index 80a9810b6..36c451b81 100644
--- a/src/Enchantments.cpp
+++ b/src/Enchantments.cpp
@@ -6,7 +6,7 @@
 #include "Enchantments.h"
 #include "WorldStorage/FastNBT.h"
 #include "FastRandom.h"
-#include "Noise.h"
+#include "Noise/Noise.h"
 
 
 
diff --git a/src/Entities/Entity.cpp b/src/Entities/Entity.cpp
index afc61c73f..54b9f2a20 100644
--- a/src/Entities/Entity.cpp
+++ b/src/Entities/Entity.cpp
@@ -665,7 +665,10 @@ int cEntity::GetArmorCoverAgainst(const cEntity * a_Attacker, eDamageType a_Dama
 	// Returns the hitpoints out of a_RawDamage that the currently equipped armor would cover
 	
 	// Filter out damage types that are not protected by armor:
-	if (!ArmorCoversAgainst(a_DamageType)) return 0;
+	if (!ArmorCoversAgainst(a_DamageType))
+	{
+		return 0;
+	}
 	
 	// Add up all armor points:
 	// Ref.: http://www.minecraftwiki.net/wiki/Armor#Defense_points as of 2012_12_20
@@ -1011,9 +1014,18 @@ void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 				// Block hit was within our projected path
 				// Begin by stopping movement in the direction that we hit something. The Normal is the line perpendicular to a 2D face and in this case, stores what block face was hit through either -1 or 1.
 				// For example: HitNormal.y = -1 : BLOCK_FACE_YM; HitNormal.y = 1 : BLOCK_FACE_YP
-				if (Tracer.HitNormal.x != 0.f) NextSpeed.x = 0.f;
-				if (Tracer.HitNormal.y != 0.f) NextSpeed.y = 0.f;
-				if (Tracer.HitNormal.z != 0.f) NextSpeed.z = 0.f;
+				if (Tracer.HitNormal.x != 0.f)
+				{
+					NextSpeed.x = 0.f;
+				}
+				if (Tracer.HitNormal.y != 0.f)
+				{
+					NextSpeed.y = 0.f;
+				}
+				if (Tracer.HitNormal.z != 0.f)
+				{
+					NextSpeed.z = 0.f;
+				}
 
 				if (Tracer.HitNormal.y == 1.f)  // Hit BLOCK_FACE_YP, we are on the ground
 				{
@@ -1276,7 +1288,7 @@ bool cEntity::DetectPortal()
 					return false;
 				}
 
-				if (IsPlayer() && !((cPlayer *)this)->IsGameModeCreative() && m_PortalCooldownData.m_TicksDelayed != 80)
+				if (IsPlayer() && !((cPlayer *)this)->IsGameModeCreative() && (m_PortalCooldownData.m_TicksDelayed != 80))
 				{
 					// Delay teleportation for four seconds if the entity is a non-creative player
 					m_PortalCooldownData.m_TicksDelayed++;
diff --git a/src/Entities/Minecart.cpp b/src/Entities/Minecart.cpp
index 22e046800..fac4f0714 100644
--- a/src/Entities/Minecart.cpp
+++ b/src/Entities/Minecart.cpp
@@ -142,8 +142,13 @@ void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 
 	if (!IsBlockRail(InsideType))
 	{
-		Chunk->GetBlockTypeMeta(RelPosX, PosY + 1, RelPosZ, InsideType, InsideMeta);  // When an descending minecart hits a flat rail, it goes through the ground; check for this
-		if (IsBlockRail(InsideType)) AddPosY(1);  // Push cart upwards
+		// When a descending minecart hits a flat rail, it goes through the ground; check for this
+		Chunk->GetBlockTypeMeta(RelPosX, PosY + 1, RelPosZ, InsideType, InsideMeta);
+		if (IsBlockRail(InsideType))
+		{
+			// Push cart upwards
+			AddPosY(1);
+		}
 	}
 
 	bool WasDetectorRail = false;
@@ -218,7 +223,10 @@ void cMinecart::HandleRailPhysics(NIBBLETYPE a_RailMeta, float a_Dt)
 
 			// Execute both the entity and block collision checks
 			bool BlckCol = TestBlockCollision(a_RailMeta), EntCol = TestEntityCollision(a_RailMeta);
-			if (EntCol || BlckCol) return;
+			if (EntCol || BlckCol)
+			{
+				return;
+			}
 			
 			if (GetSpeedZ() != NO_SPEED)  // Don't do anything if cart is stationary
 			{
@@ -243,7 +251,10 @@ void cMinecart::HandleRailPhysics(NIBBLETYPE a_RailMeta, float a_Dt)
 			SetSpeedZ(NO_SPEED);
 
 			bool BlckCol = TestBlockCollision(a_RailMeta), EntCol = TestEntityCollision(a_RailMeta);
-			if (EntCol || BlckCol) return;
+			if (EntCol || BlckCol)
+			{
+				return;
+			}
 
 			if (GetSpeedX() != NO_SPEED)
 			{
@@ -422,7 +433,10 @@ void cMinecart::HandlePoweredRailPhysics(NIBBLETYPE a_RailMeta)
 			SetSpeedX(0);
 
 			bool BlckCol = TestBlockCollision(a_RailMeta), EntCol = TestEntityCollision(a_RailMeta);
-			if (EntCol || BlckCol) return;
+			if (EntCol || BlckCol)
+			{
+				return;
+			}
 			
 			if (GetSpeedZ() != NO_SPEED)
 			{
@@ -445,7 +459,10 @@ void cMinecart::HandlePoweredRailPhysics(NIBBLETYPE a_RailMeta)
 			SetSpeedZ(NO_SPEED);
 
 			bool BlckCol = TestBlockCollision(a_RailMeta), EntCol = TestEntityCollision(a_RailMeta);
-			if (EntCol || BlckCol) return;
+			if (EntCol || BlckCol)
+			{
+				return;
+			}
 
 			if (GetSpeedX() != NO_SPEED)
 			{
diff --git a/src/Entities/Minecart.h b/src/Entities/Minecart.h
index 40e22c641..f7d0d5dda 100644
--- a/src/Entities/Minecart.h
+++ b/src/Entities/Minecart.h
@@ -128,7 +128,7 @@ public:
 	};
 	
 	const cItem & GetSlot(int a_Idx) const { return m_Contents.GetSlot(a_Idx); }
-	void SetSlot(size_t a_Idx, const cItem & a_Item) { m_Contents.SetSlot(a_Idx, a_Item); }
+	void SetSlot(size_t a_Idx, const cItem & a_Item) { m_Contents.SetSlot(static_cast<int>(a_Idx), a_Item); }
 
 protected:
 	cItemGrid m_Contents;
diff --git a/src/Entities/Player.cpp b/src/Entities/Player.cpp
index 5c18d8f96..8d2eb1e5f 100644
--- a/src/Entities/Player.cpp
+++ b/src/Entities/Player.cpp
@@ -11,7 +11,6 @@
 #include "../BlockEntities/BlockEntity.h"
 #include "../BlockEntities/EnderChestEntity.h"
 #include "../Root.h"
-#include "../OSSupport/Timer.h"
 #include "../Chunk.h"
 #include "../Items/ItemHandler.h"
 #include "../Vector3.h"
@@ -27,7 +26,7 @@
 #define PLAYER_INVENTORY_SAVE_INTERVAL 6000
 
 // 1000 = once per second
-#define PLAYER_LIST_TIME_MS 1000
+#define PLAYER_LIST_TIME_MS std::chrono::milliseconds(1000)
 
 
 
@@ -91,9 +90,7 @@ cPlayer::cPlayer(cClientHandle* a_Client, const AString & a_PlayerName) :
 	SetMaxHealth(MAX_HEALTH);
 	m_Health = MAX_HEALTH;
 	
-	cTimer t1;
-	m_LastPlayerListTime = t1.GetNowTime();
-	
+	m_LastPlayerListTime = std::chrono::steady_clock::now();
 	m_PlayerName = a_PlayerName;
 
 	cWorld * World = nullptr;
@@ -120,6 +117,11 @@ cPlayer::cPlayer(cClientHandle* a_Client, const AString & a_PlayerName) :
 		{
 			m_CanFly = true;
 		}
+		if (World->IsGameModeSpectator())  // Otherwise Player will fall out of the world on join
+		{
+			m_CanFly = true;
+			m_IsFlying = true;
+		}
 	}
 	
 	cRoot::Get()->GetServer()->PlayerCreated(this);
@@ -263,11 +265,10 @@ void cPlayer::Tick(float a_Dt, cChunk & a_Chunk)
 	m_Inventory.UpdateItems();
 
 	// Send Player List (Once per m_LastPlayerListTime/1000 ms)
-	cTimer t1;
-	if (m_LastPlayerListTime + PLAYER_LIST_TIME_MS <= t1.GetNowTime())
+	if (m_LastPlayerListTime + PLAYER_LIST_TIME_MS <= std::chrono::steady_clock::now())
 	{
 		m_World->BroadcastPlayerListUpdatePing(*this);
-		m_LastPlayerListTime = t1.GetNowTime();
+		m_LastPlayerListTime = std::chrono::steady_clock::now();
 	}
 
 	if (IsFlying())
@@ -358,7 +359,7 @@ float cPlayer::GetXpPercentage()
 
 bool cPlayer::SetCurrentExperience(short int a_CurrentXp)
 {
-	if (!(a_CurrentXp >= 0) || (a_CurrentXp > (SHRT_MAX - m_LifetimeTotalXp)))
+	if (!(a_CurrentXp >= 0) || (a_CurrentXp > (std::numeric_limits<short>().max() - m_LifetimeTotalXp)))
 	{
 		LOGWARNING("Tried to update experiece with an invalid Xp value: %d", a_CurrentXp);
 		return false;  // oops, they gave us a dodgey number
@@ -378,18 +379,17 @@ bool cPlayer::SetCurrentExperience(short int a_CurrentXp)
 
 short cPlayer::DeltaExperience(short a_Xp_delta)
 {
-	if (a_Xp_delta > (SHRT_MAX - m_CurrentXp))
+	if (a_Xp_delta > (std::numeric_limits<short>().max() - m_CurrentXp))
 	{
 		// Value was bad, abort and report
-		LOGWARNING("Attempt was made to increment Xp by %d, which overflowed the short datatype. Ignoring.",
-			a_Xp_delta);
+		LOGWARNING("Attempt was made to increment Xp by %d, which overflowed the short datatype. Ignoring.", a_Xp_delta);
 		return -1;  // Should we instead just return the current Xp?
 	}
 
 	m_CurrentXp += a_Xp_delta;
 
 	// Make sure they didn't subtract too much
-	m_CurrentXp = std::max<short int>(m_CurrentXp, 0);
+	m_CurrentXp = std::max<short>(m_CurrentXp, 0);
 
 	// Update total for score calculation
 	if (a_Xp_delta > 0)
@@ -397,8 +397,7 @@ short cPlayer::DeltaExperience(short a_Xp_delta)
 		m_LifetimeTotalXp += a_Xp_delta;
 	}
 
-	LOGD("Player \"%s\" gained/lost %d experience, total is now: %d",
-		GetName().c_str(), a_Xp_delta, m_CurrentXp);
+	LOGD("Player \"%s\" gained/lost %d experience, total is now: %d", GetName().c_str(), a_Xp_delta, m_CurrentXp);
 
 	// Set experience to be updated
 	m_bDirtyExperience = true;
@@ -1074,7 +1073,7 @@ bool cPlayer::IsGameModeAdventure(void) const
 bool cPlayer::IsGameModeSpectator(void) const
 {
 	return (m_GameMode == gmSpectator) ||  // Either the player is explicitly in Spectator
-		((m_GameMode == gmNotSet) &&  m_World->IsGameModeSpectator());  // or they inherit from the world and the world is Adventure
+		((m_GameMode == gmNotSet) &&  m_World->IsGameModeSpectator());  // or they inherit from the world and the world is Spectator
 }
 
 
@@ -1602,6 +1601,9 @@ bool cPlayer::DoMoveToWorld(cWorld * a_World, bool a_ShouldSendRespawn)
 	a_World->AddPlayer(this);
 	SetWorld(a_World);  // Chunks may be streamed before cWorld::AddPlayer() sets the world to the new value
 
+	// Update the view distance.
+	m_ClientHandle->SetViewDistance(m_ClientHandle->GetRequestedViewDistance());
+
 	return true;
 }
 
@@ -1890,8 +1892,8 @@ void cPlayer::UseEquippedItem(int a_Amount)
 
 void cPlayer::TickBurning(cChunk & a_Chunk)
 {
-	// Don't burn in creative and stop burning in creative if necessary
-	if (!IsGameModeCreative())
+	// Don't burn in creative or spectator and stop burning in creative if necessary
+	if (!IsGameModeCreative() && !IsGameModeSpectator())
 	{
 		super::TickBurning(a_Chunk);
 	}
@@ -1910,9 +1912,9 @@ void cPlayer::HandleFood(void)
 {
 	// Ref.: http://www.minecraftwiki.net/wiki/Hunger
 
-	if (IsGameModeCreative())
+	if (IsGameModeCreative() || IsGameModeSpectator())
 	{
-		// Hunger is disabled for Creative
+		// Hunger is disabled for Creative and Spectator
 		return;
 	}
 
@@ -2077,7 +2079,7 @@ void cPlayer::UpdateMovementStats(const Vector3d & a_DeltaPos)
 
 void cPlayer::ApplyFoodExhaustionFromMovement()
 {
-	if (IsGameModeCreative())
+	if (IsGameModeCreative() || IsGameModeSpectator())
 	{
 		return;
 	}
diff --git a/src/Entities/Player.h b/src/Entities/Player.h
index 4bb51b556..c643aaa8e 100644
--- a/src/Entities/Player.h
+++ b/src/Entities/Player.h
@@ -516,7 +516,7 @@ protected:
 	/** The item being dragged by the cursor while in a UI window */
 	cItem m_DraggingItem;
 
-	long long m_LastPlayerListTime;
+	std::chrono::steady_clock::time_point m_LastPlayerListTime;
 
 	cClientHandle * m_ClientHandle;
 	
diff --git a/src/FastRandom.cpp b/src/FastRandom.cpp
index 42bf5f3f9..515dc25ea 100644
--- a/src/FastRandom.cpp
+++ b/src/FastRandom.cpp
@@ -4,13 +4,15 @@
 // Implements the cFastRandom class representing a fast random number generator
 
 #include "Globals.h"
-#include <time.h>
 #include "FastRandom.h"
 
 
 
 
 
+////////////////////////////////////////////////////////////////////////////////
+// cFastRandom:
+
 #if 0 && defined(_DEBUG)
 // Self-test
 // Both ints and floats are quick-tested to see if the random is calculated correctly, checking the range in ASSERTs,
@@ -83,16 +85,8 @@ public:
 
 
 
-
-int cFastRandom::m_SeedCounter = 0;
-
-
-
-
-
 cFastRandom::cFastRandom(void) :
-	m_Seed(m_SeedCounter++),
-	m_Counter(0)
+	m_LinearRand(static_cast<unsigned>(std::chrono::system_clock::now().time_since_epoch().count()))
 {
 }
 
@@ -102,82 +96,96 @@ cFastRandom::cFastRandom(void) :
 
 int cFastRandom::NextInt(int a_Range)
 {
-	ASSERT(a_Range <= 1000000);  // The random is not sufficiently linearly distributed with bigger ranges
-	ASSERT(a_Range > 0);
-	
-	// Make the m_Counter operations as minimal as possible, to emulate atomicity
-	int Counter = m_Counter++;
-	
-	// Use a_Range, m_Counter and m_Seed as inputs to the pseudorandom function:
-	int n = a_Range + Counter * 57 + m_Seed * 57 * 57;
-	n = (n << 13) ^ n;
-	n = ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff);
-	return ((n / 11) % a_Range);
+	std::uniform_int_distribution<> distribution(0, a_Range - 1);
+	return distribution(m_LinearRand);
 }
 
 
 
 
 
+
 int cFastRandom::NextInt(int a_Range, int a_Salt)
 {
-	ASSERT(a_Range <= 1000000);  // The random is not sufficiently linearly distributed with bigger ranges
-	ASSERT(a_Range > 0);
-	
-	// Make the m_Counter operations as minimal as possible, to emulate atomicity
-	int Counter = m_Counter++;
-	
-	// Use a_Range, a_Salt, m_Counter and m_Seed as inputs to the pseudorandom function:
-	int n = a_Range + Counter * 57 + m_Seed * 57 * 57 + a_Salt * 57 * 57 * 57;
-	n = (n << 13) ^ n;
-	n = ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff);
-	return ((n / 11) % a_Range);
+	m_LinearRand.seed(a_Salt);
+	std::uniform_int_distribution<> distribution(0, a_Range - 1);
+	return distribution(m_LinearRand);
 }
 
 
 
 
 
+
 float cFastRandom::NextFloat(float a_Range)
 {
-	// Make the m_Counter operations as minimal as possible, to emulate atomicity
-	int Counter = m_Counter++;
-	
-	// Use a_Range, a_Salt, m_Counter and m_Seed as inputs to the pseudorandom function:
-	int n = (int)a_Range + Counter * 57 + m_Seed * 57 * 57;
-	n = (n << 13) ^ n;
-	n = ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff);
-	
-	// Convert the integer into float with the specified range:
-	return (((float)n / (float)0x7fffffff) * a_Range);
+	std::uniform_real_distribution<float> distribution(0, a_Range);
+	return distribution(m_LinearRand);
 }
 
 
 
 
 
+
 float cFastRandom::NextFloat(float a_Range, int a_Salt)
 {
-	// Make the m_Counter operations as minimal as possible, to emulate atomicity
-	int Counter = m_Counter++;
-	
-	// Use a_Range, a_Salt, m_Counter and m_Seed as inputs to the pseudorandom function:
-	int n = (int)a_Range + Counter * 57 + m_Seed * 57 * 57 + a_Salt * 57 * 57 * 57;
-	n = (n << 13) ^ n;
-	n = ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff);
-	
-	// Convert the integer into float with the specified range:
-	return (((float)n / (float)0x7fffffff) * a_Range);
+	m_LinearRand.seed(a_Salt);
+	std::uniform_real_distribution<float> distribution(0, a_Range);
+	return distribution(m_LinearRand);
 }
 
 
 
 
 
+
 int cFastRandom::GenerateRandomInteger(int a_Begin, int a_End)
 {
-	cFastRandom Random;
-	return Random.NextInt(a_End - a_Begin + 1) + a_Begin;
+	std::uniform_int_distribution<> distribution(a_Begin, a_End);
+	return distribution(m_LinearRand);
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// MTRand:
+
+MTRand::MTRand() :
+	m_MersenneRand(static_cast<unsigned>(std::chrono::system_clock::now().time_since_epoch().count()))
+{
+}
+
+
+
+
+
+int MTRand::randInt(int a_Range)
+{
+	std::uniform_int_distribution<> distribution(0, a_Range);
+	return distribution(m_MersenneRand);
+}
+
+
+
+
+
+int MTRand::randInt()
+{
+	std::uniform_int_distribution<> distribution(0, std::numeric_limits<int>::max());
+	return distribution(m_MersenneRand);
+}
+
+
+
+
+
+double MTRand::rand(double a_Range)
+{
+	std::uniform_real_distribution<> distribution(0, a_Range);
+	return distribution(m_MersenneRand);
 }
 
 
diff --git a/src/FastRandom.h b/src/FastRandom.h
index cebebad96..64a087c97 100644
--- a/src/FastRandom.h
+++ b/src/FastRandom.h
@@ -22,6 +22,7 @@ salts, the values they get will be different.
 
 
 #pragma once
+#include <random>
 
 
 
@@ -30,18 +31,19 @@ salts, the values they get will be different.
 class cFastRandom
 {
 public:
+
 	cFastRandom(void);
 	
-	/// Returns a random int in the range [0 .. a_Range - 1]; a_Range must be less than 1M
+	/** Returns a random int in the range [0 .. a_Range - 1]; a_Range must be less than 1M */
 	int NextInt(int a_Range);
 
-	/// Returns a random int in the range [0 .. a_Range - 1]; a_Range must be less than 1M; a_Salt is additional source of randomness
+	/** Returns a random int in the range [0 .. a_Range - 1]; a_Range must be less than 1M; a_Salt is additional source of randomness */
 	int NextInt(int a_Range, int a_Salt);
 	
-	/// Returns a random float in the range [0 .. a_Range]; a_Range must be less than 1M
+	/** Returns a random float in the range [0 .. a_Range]; a_Range must be less than 1M */
 	float NextFloat(float a_Range);
 
-	/// Returns a random float in the range [0 .. a_Range]; a_Range must be less than 1M; a_Salt is additional source of randomness
+	/** Returns a random float in the range [0 .. a_Range]; a_Range must be less than 1M; a_Salt is additional source of randomness */
 	float NextFloat(float a_Range, int a_Salt);
 
 	/** Returns a random float between 0 and 1. */
@@ -49,14 +51,35 @@ public:
 
 	/** Returns a random int in the range [a_Begin .. a_End] */
 	int GenerateRandomInteger(int a_Begin, int a_End);
-	
-protected:
-	int m_Seed;
-	int m_Counter;
-	
-	/// Counter that is used to initialize the seed, incremented for each object created
-	static int m_SeedCounter;
-} ;
+
+private:
+
+	std::minstd_rand m_LinearRand;
+};
+
+
+
+
+
+class MTRand
+{
+public:
+
+	MTRand(void);
+
+	/** Returns a random integer in the range [0 .. a_Range]. */
+	int randInt(int a_Range);
+
+	/** Returns a random integer in the range [0 .. MAX_INT]. */
+	int randInt(void);
+
+	/** Returns a random floating point number in the range [0 .. a_Range]. */
+	double rand(double a_Range);
+
+private:
+
+	std::mt19937 m_MersenneRand;
+};
 
 
 
diff --git a/src/FurnaceRecipe.cpp b/src/FurnaceRecipe.cpp
index 9b3b2ecbe..112aa8146 100644
--- a/src/FurnaceRecipe.cpp
+++ b/src/FurnaceRecipe.cpp
@@ -115,7 +115,7 @@ void cFurnaceRecipe::AddFuelFromLine(const AString & a_Line, unsigned int a_Line
 	Line.erase(Line.begin());  // Remove the beginning "!"
 	Line.erase(std::remove_if(Line.begin(), Line.end(), isspace), Line.end());
 
-	std::auto_ptr<cItem> Item(new cItem);
+	std::unique_ptr<cItem> Item(new cItem);
 	int BurnTime;
 
 	const AStringVector & Sides = StringSplit(Line, "=");
@@ -157,8 +157,8 @@ void cFurnaceRecipe::AddRecipeFromLine(const AString & a_Line, unsigned int a_Li
 	Line.erase(std::remove_if(Line.begin(), Line.end(), isspace), Line.end());
 
 	int CookTime = 200;
-	std::auto_ptr<cItem> InputItem(new cItem());
-	std::auto_ptr<cItem> OutputItem(new cItem());
+	std::unique_ptr<cItem> InputItem(new cItem());
+	std::unique_ptr<cItem> OutputItem(new cItem());
 
 	const AStringVector & Sides = StringSplit(Line, "=");
 	if (Sides.size() != 2)
diff --git a/src/Generating/BioGen.h b/src/Generating/BioGen.h
index 5fd0844d9..13fb40c5f 100644
--- a/src/Generating/BioGen.h
+++ b/src/Generating/BioGen.h
@@ -15,7 +15,7 @@ Interfaces to the various biome generators:
 #pragma once
 
 #include "ComposableGenerator.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
 #include "../VoronoiMap.h"
 
 
diff --git a/src/Generating/CMakeLists.txt b/src/Generating/CMakeLists.txt
index 1a26bd0d5..a28510d40 100644
--- a/src/Generating/CMakeLists.txt
+++ b/src/Generating/CMakeLists.txt
@@ -10,6 +10,7 @@ SET (SRCS
 	ChunkDesc.cpp
 	ChunkGenerator.cpp
 	CompoGen.cpp
+	CompoGenBiomal.cpp
 	ComposableGenerator.cpp
 	DistortedHeightmap.cpp
 	DungeonRoomsFinisher.cpp
@@ -30,8 +31,10 @@ SET (SRCS
 	StructGen.cpp
 	TestRailsGen.cpp
 	Trees.cpp
+	TwoHeights.cpp
 	UnderwaterBaseGen.cpp
-	VillageGen.cpp)
+	VillageGen.cpp
+)
 
 SET (HDRS
 	BioGen.h
@@ -39,7 +42,9 @@ SET (HDRS
 	ChunkDesc.h
 	ChunkGenerator.h
 	CompoGen.h
+	CompoGenBiomal.h
 	ComposableGenerator.h
+	CompositedHeiGen.h
 	DistortedHeightmap.h
 	DungeonRoomsFinisher.h
 	EndGen.h
@@ -58,11 +63,14 @@ SET (HDRS
 	RainbowRoadsGen.h
 	Ravines.h
 	RoughRavines.h
+	ShapeGen.cpp
 	StructGen.h
 	TestRailsGen.h
 	Trees.h
+	TwoHeights.h
 	UnderwaterBaseGen.h
-	VillageGen.h)
+	VillageGen.h
+)
 
 if(NOT MSVC)
 	add_library(Generating ${SRCS} ${HDRS})
diff --git a/src/Generating/Caves.cpp b/src/Generating/Caves.cpp
index fc925a150..e4735cb83 100644
--- a/src/Generating/Caves.cpp
+++ b/src/Generating/Caves.cpp
@@ -692,8 +692,14 @@ static float GetMarbleNoise( float x, float y, float z, cNoise & a_Noise)
 	float oct1 = (a_Noise.CubicNoise3D(x * 0.1f, y * 0.1f, z * 0.1f)) * 4;
 
 	oct1 = oct1 * oct1 * oct1;
-	if (oct1 < 0.f)  oct1 = PI_2;
-	if (oct1 > PI_2) oct1 = PI_2;
+	if (oct1 < 0.f)
+	{
+		oct1 = PI_2;
+	}
+	if (oct1 > PI_2)
+	{
+		oct1 = PI_2;
+	}
 
 	return oct1;
 }
diff --git a/src/Generating/Caves.h b/src/Generating/Caves.h
index 0e17acf9e..691ef3e62 100644
--- a/src/Generating/Caves.h
+++ b/src/Generating/Caves.h
@@ -13,7 +13,6 @@
 #pragma once
 
 #include "GridStructGen.h"
-#include "../Noise.h"
 
 
 
diff --git a/src/Generating/ChunkDesc.cpp b/src/Generating/ChunkDesc.cpp
index 020d3bd0f..4a5ac5a18 100644
--- a/src/Generating/ChunkDesc.cpp
+++ b/src/Generating/ChunkDesc.cpp
@@ -7,7 +7,7 @@
 #include "ChunkDesc.h"
 #include "../BlockArea.h"
 #include "../Cuboid.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
 #include "../BlockEntities/BlockEntity.h"
 
 
@@ -152,6 +152,52 @@ int cChunkDesc::GetHeight(int a_RelX, int a_RelZ)
 
 
 
+void cChunkDesc::SetHeightFromShape(const Shape & a_Shape)
+{
+	for (int z = 0; z < cChunkDef::Width; z++)
+	{
+		for (int x = 0; x < cChunkDef::Width; x++)
+		{
+			for (int y = cChunkDef::Height - 1; y > 0; y--)
+			{
+				if (a_Shape[y + x * 256 + z * 16 * 256] != 0)
+				{
+					cChunkDef::SetHeight(m_HeightMap, x, z, y);
+					break;
+				}
+			}  // for y
+		}  // for x
+	}  // for z
+}
+
+
+
+
+
+void cChunkDesc::GetShapeFromHeight(Shape & a_Shape) const
+{
+	for (int z = 0; z < cChunkDef::Width; z++)
+	{
+		for (int x = 0; x < cChunkDef::Width; x++)
+		{
+			int height = cChunkDef::GetHeight(m_HeightMap, x, z);
+			for (int y = 0; y <= height; y++)
+			{
+				a_Shape[y + x * 256 + z * 16 * 256] = 1;
+			}
+			
+			for (int y = height + 1; y < cChunkDef::Height; y++)
+			{
+				a_Shape[y + x * 256 + z * 16 * 256] = 0;
+			}  // for y
+		}  // for x
+	}  // for z
+}
+
+
+
+
+
 void cChunkDesc::SetUseDefaultBiomes(bool a_bUseDefaultBiomes)
 {
 	m_bUseDefaultBiomes = a_bUseDefaultBiomes;
@@ -366,6 +412,23 @@ HEIGHTTYPE cChunkDesc::GetMaxHeight(void) const
 
 
 
+HEIGHTTYPE cChunkDesc::GetMinHeight(void) const
+{
+	HEIGHTTYPE MinHeight = m_HeightMap[0];
+	for (size_t i = 1; i < ARRAYCOUNT(m_HeightMap); i++)
+	{
+		if (m_HeightMap[i] < MinHeight)
+		{
+			MinHeight = m_HeightMap[i];
+		}
+	}
+	return MinHeight;
+}
+
+
+
+
+
 void cChunkDesc::FillRelCuboid(
 	int a_MinX, int a_MaxX,
 	int a_MinY, int a_MaxY,
diff --git a/src/Generating/ChunkDesc.h b/src/Generating/ChunkDesc.h
index 570132790..480106fb5 100644
--- a/src/Generating/ChunkDesc.h
+++ b/src/Generating/ChunkDesc.h
@@ -29,10 +29,17 @@ class cChunkDesc
 {
 public:
 	// tolua_end
+
+	/** The datatype used to represent the entire chunk worth of shape.
+	0 = air
+	1 = solid
+	Indexed as [y + 256 * x + 256 * 16 * z]. */
+	typedef Byte Shape[256 * 16 * 16];
 	
 	/** Uncompressed block metas, 1 meta per byte */
 	typedef NIBBLETYPE BlockNibbleBytes[cChunkDef::NumBlocks];
 	
+
 	cChunkDesc(int a_ChunkX, int a_ChunkZ);
 	~cChunkDesc();
 
@@ -57,10 +64,21 @@ public:
 	EMCSBiome  GetBiome(int a_RelX, int a_RelZ);
 
 	// These operate on the heightmap, so they could get out of sync with the data
-	// Use UpdateHeightmap() to re-sync
+	// Use UpdateHeightmap() to re-calculate heightmap from the block data
 	void       SetHeight(int a_RelX, int a_RelZ, int a_Height);
 	int        GetHeight(int a_RelX, int a_RelZ);
 
+	// tolua_end
+
+	/** Sets the heightmap to match the given shape data.
+	Note that this ignores overhangs; the method is mostly used by old composition generators. */
+	void SetHeightFromShape(const Shape & a_Shape);
+
+	/** Sets the shape in a_Shape to match the heightmap stored currently in m_HeightMap. */
+	void GetShapeFromHeight(Shape & a_Shape) const;
+
+	// tolua_begin
+
 	// Default generation:
 	void SetUseDefaultBiomes(bool a_bUseDefaultBiomes);
 	bool IsUsingDefaultBiomes(void) const;
@@ -77,8 +95,11 @@ public:
 	/** Reads an area from the chunk into a cBlockArea, blocktypes and blockmetas */
 	void ReadBlockArea(cBlockArea & a_Dest, int a_MinRelX, int a_MaxRelX, int a_MinRelY, int a_MaxRelY, int a_MinRelZ, int a_MaxRelZ);
 
-	/** Returns the maximum height value in the heightmap */
+	/** Returns the maximum height value in the heightmap. */
 	HEIGHTTYPE GetMaxHeight(void) const;
+
+	/** Returns the minimum height value in the heightmap. */
+	HEIGHTTYPE GetMinHeight(void) const;
 	
 	/** Fills the relative cuboid with specified block; allows cuboid out of range of this chunk */
 	void FillRelCuboid(
diff --git a/src/Generating/ChunkGenerator.cpp b/src/Generating/ChunkGenerator.cpp
index 92e1bb31d..d2e7b47b4 100644
--- a/src/Generating/ChunkGenerator.cpp
+++ b/src/Generating/ChunkGenerator.cpp
@@ -6,7 +6,7 @@
 #include "ChunkDesc.h"
 #include "ComposableGenerator.h"
 #include "Noise3DGenerator.h"
-#include "../MersenneTwister.h"
+#include "FastRandom.h"
 
 
 
@@ -191,13 +191,13 @@ EMCSBiome cChunkGenerator::GetBiomeAt(int a_BlockX, int a_BlockZ)
 BLOCKTYPE cChunkGenerator::GetIniBlock(cIniFile & a_IniFile, const AString & a_SectionName, const AString & a_ValueName, const AString & a_Default)
 {
 	AString BlockType = a_IniFile.GetValueSet(a_SectionName, a_ValueName, a_Default);
-	BLOCKTYPE Block = BlockStringToType(BlockType);
+	int Block = BlockStringToType(BlockType);
 	if (Block < 0)
 	{
 		LOGWARN("[%s].%s Could not parse block value \"%s\". Using default: \"%s\".", a_SectionName.c_str(), a_ValueName.c_str(), BlockType.c_str(), a_Default.c_str());
-		return BlockStringToType(a_Default);
+		return static_cast<BLOCKTYPE>(BlockStringToType(a_Default));
 	}
-	return Block;
+	return static_cast<BLOCKTYPE>(Block);
 }
 
 
diff --git a/src/Generating/CompoGen.cpp b/src/Generating/CompoGen.cpp
index 29b831dfd..cb9c04fd7 100644
--- a/src/Generating/CompoGen.cpp
+++ b/src/Generating/CompoGen.cpp
@@ -21,8 +21,9 @@
 ////////////////////////////////////////////////////////////////////////////////
 // cCompoGenSameBlock:
 
-void cCompoGenSameBlock::ComposeTerrain(cChunkDesc & a_ChunkDesc)
+void cCompoGenSameBlock::ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape)
 {
+	a_ChunkDesc.SetHeightFromShape(a_Shape);
 	a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
 	for (int z = 0; z < cChunkDef::Width; z++)
 	{
@@ -63,7 +64,7 @@ void cCompoGenSameBlock::InitializeCompoGen(cIniFile & a_IniFile)
 ////////////////////////////////////////////////////////////////////////////////
 // cCompoGenDebugBiomes:
 
-void cCompoGenDebugBiomes::ComposeTerrain(cChunkDesc & a_ChunkDesc)
+void cCompoGenDebugBiomes::ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape)
 {
 	static BLOCKTYPE Blocks[] =
 	{
@@ -92,6 +93,7 @@ void cCompoGenDebugBiomes::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 		E_BLOCK_BEDROCK,
 	} ;
 	
+	a_ChunkDesc.SetHeightFromShape(a_Shape);
 	a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
 
 	for (int z = 0; z < cChunkDef::Width; z++)
@@ -131,7 +133,7 @@ cCompoGenClassic::cCompoGenClassic(void) :
 
 
 
-void cCompoGenClassic::ComposeTerrain(cChunkDesc & a_ChunkDesc)
+void cCompoGenClassic::ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape)
 {
 	/* The classic composition means:
 		- 1 layer of grass, 3 of dirt and the rest stone, if the height > sealevel + beachheight
@@ -142,6 +144,7 @@ void cCompoGenClassic::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 	*/
 
 	a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
+	a_ChunkDesc.SetHeightFromShape(a_Shape);
 
 	// The patterns to use for different situations, must be same length!
 	const BLOCKTYPE PatternGround[] = {m_BlockTop,    m_BlockMiddle, m_BlockMiddle, m_BlockMiddle} ;
@@ -194,7 +197,7 @@ void cCompoGenClassic::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 
 void cCompoGenClassic::InitializeCompoGen(cIniFile & a_IniFile)
 {
-	m_SeaLevel         = a_IniFile.GetValueSetI("Generator", "ClassicSeaLevel",    m_SeaLevel);
+	m_SeaLevel         = a_IniFile.GetValueSetI("Generator", "SeaLevel",           m_SeaLevel);
 	m_BeachHeight      = a_IniFile.GetValueSetI("Generator", "ClassicBeachHeight", m_BeachHeight);
 	m_BeachDepth       = a_IniFile.GetValueSetI("Generator", "ClassicBeachDepth",  m_BeachDepth);
 	m_BlockTop         = (BLOCKTYPE)(GetIniItemSet(a_IniFile, "Generator", "ClassicBlockTop",         "grass").m_ItemType);
@@ -210,323 +213,6 @@ void cCompoGenClassic::InitializeCompoGen(cIniFile & a_IniFile)
 
 
 ////////////////////////////////////////////////////////////////////////////////
-// cCompoGenBiomal:
-
-void cCompoGenBiomal::ComposeTerrain(cChunkDesc & a_ChunkDesc)
-{
-	a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
-
-	int ChunkX = a_ChunkDesc.GetChunkX();
-	int ChunkZ = a_ChunkDesc.GetChunkZ();
-	
-	/*
-	_X 2013_04_22:
-	There's no point in generating the whole cubic noise at once, because the noise values are used in
-	only about 20 % of the cases, so the speed gained by precalculating is lost by precalculating too much data
-	*/
-	
-	for (int z = 0; z < cChunkDef::Width; z++)
-	{
-		for (int x = 0; x < cChunkDef::Width; x++)
-		{
-			int Height = a_ChunkDesc.GetHeight(x, z);
-			if (Height > m_SeaLevel)
-			{
-				switch (a_ChunkDesc.GetBiome(x, z))
-				{
-					case biOcean:
-					case biPlains:
-					case biExtremeHills:
-					case biForest:
-					case biTaiga:
-					case biSwampland:
-					case biRiver:
-					case biFrozenOcean:
-					case biFrozenRiver:
-					case biIcePlains:
-					case biIceMountains:
-					case biForestHills:
-					case biTaigaHills:
-					case biExtremeHillsEdge:
-					case biJungle:
-					case biJungleHills:
-					case biJungleEdge:
-					case biDeepOcean:
-					case biStoneBeach:
-					case biColdBeach:
-					case biBirchForest:
-					case biBirchForestHills:
-					case biRoofedForest:
-					case biColdTaiga:
-					case biColdTaigaHills:
-					case biExtremeHillsPlus:
-					case biSavanna:
-					case biSavannaPlateau:
-					case biSunflowerPlains:
-					case biExtremeHillsM:
-					case biFlowerForest:
-					case biTaigaM:
-					case biSwamplandM:
-					case biIcePlainsSpikes:
-					case biJungleM:
-					case biJungleEdgeM:
-					case biBirchForestM:
-					case biBirchForestHillsM:
-					case biRoofedForestM:
-					case biColdTaigaM:
-					case biExtremeHillsPlusM:
-					case biSavannaM:
-					case biSavannaPlateauM:
-					{
-						FillColumnGrass(x, z, Height, a_ChunkDesc.GetBlockTypes());
-						break;
-					}
-
-					case biMesa:
-					case biMesaPlateauF:
-					case biMesaPlateau:
-					case biMesaBryce:
-					case biMesaPlateauFM:
-					case biMesaPlateauM:
-					{
-						FillColumnClay(x, z, Height, a_ChunkDesc.GetBlockTypes());
-						break;
-					}
-					
-					case biMegaTaiga:
-					case biMegaTaigaHills:
-					case biMegaSpruceTaiga:
-					case biMegaSpruceTaigaHills:
-					{
-						FillColumnDirt(x, z, Height, a_ChunkDesc.GetBlockTypes());
-						break;
-					}
-
-					case biDesertHills:
-					case biDesert:
-					case biDesertM:
-					case biBeach:
-					{
-						FillColumnSand(x, z, Height, a_ChunkDesc.GetBlockTypes());
-						break;
-					}
-					case biMushroomIsland:
-					case biMushroomShore:
-					{
-						FillColumnMycelium(x, z, Height, a_ChunkDesc.GetBlockTypes());
-						break;
-					}
-					default:
-					{
-						// TODO
-						ASSERT(!"CompoGenBiomal: Biome not implemented yet!");
-						break;
-					}
-				}
-			}
-			else
-			{
-				switch (a_ChunkDesc.GetBiome(x, z))
-				{
-					case biDesert:
-					case biBeach:
-					{
-						// Fill with water, sand, sandstone and stone
-						FillColumnWaterSand(x, z, Height, a_ChunkDesc.GetBlockTypes());
-						break;
-					}
-					default:
-					{
-						// Fill with water, sand/dirt/clay mix and stone
-						if (m_Noise.CubicNoise2D(0.3f * (cChunkDef::Width * ChunkX + x), 0.3f * (cChunkDef::Width * ChunkZ + z)) < 0)
-						{
-							FillColumnWaterSand(x, z, Height, a_ChunkDesc.GetBlockTypes());
-						}
-						else
-						{
-							FillColumnWaterDirt(x, z, Height, a_ChunkDesc.GetBlockTypes());
-						}
-						break;
-					}
-				}  // switch (biome)
-				a_ChunkDesc.SetHeight(x, z, m_SeaLevel + 1);
-			}  // else (under water)
-			a_ChunkDesc.SetBlockType(x, 0, z, E_BLOCK_BEDROCK);
-		}  // for x
-	}  // for z
-}
-
-
-
-
-
-void cCompoGenBiomal::InitializeCompoGen(cIniFile & a_IniFile)
-{
-	m_SeaLevel = a_IniFile.GetValueSetI("Generator", "BiomalSeaLevel", m_SeaLevel) - 1;
-}
-
-
-
-
-
-void cCompoGenBiomal::FillColumnGrass(int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes)
-{
-	BLOCKTYPE Pattern[] =
-	{
-		E_BLOCK_GRASS,
-		E_BLOCK_DIRT,
-		E_BLOCK_DIRT,
-		E_BLOCK_DIRT,
-	} ;
-	FillColumnPattern(a_RelX, a_RelZ, a_Height, a_BlockTypes, Pattern, ARRAYCOUNT(Pattern));
-	
-	for (int y = a_Height - ARRAYCOUNT(Pattern); y > 0; y--)
-	{
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, y, a_RelZ, E_BLOCK_STONE);
-	}
-}
-
-
-
-
-
-void cCompoGenBiomal::FillColumnClay(int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes)
-{
-	BLOCKTYPE Pattern[] =
-	{
-		E_BLOCK_HARDENED_CLAY,
-		E_BLOCK_HARDENED_CLAY,
-		E_BLOCK_HARDENED_CLAY,
-		E_BLOCK_HARDENED_CLAY,
-	} ;
-	FillColumnPattern(a_RelX, a_RelZ, a_Height, a_BlockTypes, Pattern, ARRAYCOUNT(Pattern));
-	
-	for (int y = a_Height - ARRAYCOUNT(Pattern); y > 0; y--)
-	{
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, y, a_RelZ, E_BLOCK_STONE);
-	}
-}
-
-
-
-
-
-void cCompoGenBiomal::FillColumnDirt(int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes)
-{
-	for (int y = 0; y < 4; y++)
-	{
-		if (a_Height - y < 0)
-		{
-			return;
-		}
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, a_Height - y, a_RelZ, E_BLOCK_DIRT);
-	}
-	for (int y = a_Height - 4; y > 0; y--)
-	{
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, y, a_RelZ, E_BLOCK_STONE);
-	}
-}
-
-
-
-
-
-void cCompoGenBiomal::FillColumnSand(int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes)
-{
-	BLOCKTYPE Pattern[] =
-	{
-		E_BLOCK_SAND,
-		E_BLOCK_SAND,
-		E_BLOCK_SAND,
-		E_BLOCK_SANDSTONE,
-	} ;
-	FillColumnPattern(a_RelX, a_RelZ, a_Height, a_BlockTypes, Pattern, ARRAYCOUNT(Pattern));
-	
-	for (int y = a_Height - ARRAYCOUNT(Pattern); y > 0; y--)
-	{
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, y, a_RelZ, E_BLOCK_STONE);
-	}
-}
-
-
-
-
-
-
-void cCompoGenBiomal::FillColumnMycelium (int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes)
-{
-	BLOCKTYPE Pattern[] =
-	{
-		E_BLOCK_MYCELIUM,
-		E_BLOCK_DIRT,
-		E_BLOCK_DIRT,
-		E_BLOCK_DIRT,
-	} ;
-	FillColumnPattern(a_RelX, a_RelZ, a_Height, a_BlockTypes, Pattern, ARRAYCOUNT(Pattern));
-	
-	for (int y = a_Height - ARRAYCOUNT(Pattern); y > 0; y--)
-	{
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, y, a_RelZ, E_BLOCK_STONE);
-	}
-}
-
-
-
-
-
-void cCompoGenBiomal::FillColumnWaterSand(int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes)
-{
-	FillColumnSand(a_RelX, a_RelZ, a_Height, a_BlockTypes);
-	for (int y = a_Height + 1; y <= m_SeaLevel + 1; y++)
-	{
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, y, a_RelZ, E_BLOCK_STATIONARY_WATER);
-	}
-}
-
-
-
-
-
-void cCompoGenBiomal::FillColumnWaterDirt(int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes)
-{
-	// Dirt
-	BLOCKTYPE Pattern[] =
-	{
-		E_BLOCK_DIRT,
-		E_BLOCK_DIRT,
-		E_BLOCK_DIRT,
-		E_BLOCK_DIRT,
-	} ;
-	FillColumnPattern(a_RelX, a_RelZ, a_Height, a_BlockTypes, Pattern, ARRAYCOUNT(Pattern));
-
-	for (int y = a_Height - ARRAYCOUNT(Pattern); y > 0; y--)
-	{
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, y, a_RelZ, E_BLOCK_STONE);
-	}
-	for (int y = a_Height + 1; y <= m_SeaLevel + 1; y++)
-	{
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, y, a_RelZ, E_BLOCK_STATIONARY_WATER);
-	}
-}
-
-
-
-
-
-
-void cCompoGenBiomal::FillColumnPattern(int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes, const BLOCKTYPE * a_Pattern, int a_PatternSize)
-{
-	for (int y = a_Height, idx = 0; (y >= 0) && (idx < a_PatternSize); y--, idx++)
-	{
-		cChunkDef::SetBlock(a_BlockTypes, a_RelX, y, a_RelZ, a_Pattern[idx]);
-	}
-}
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
 // cCompoGenNether:
 
 cCompoGenNether::cCompoGenNether(int a_Seed) :
@@ -540,7 +226,7 @@ cCompoGenNether::cCompoGenNether(int a_Seed) :
 
 
 
-void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc)
+void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape)
 {
 	HEIGHTTYPE MaxHeight = a_ChunkDesc.GetMaxHeight();
 	
@@ -604,17 +290,7 @@ void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 				BLOCKTYPE Block = E_BLOCK_AIR;
 				if (Val < m_Threshold)  // Don't calculate if the block should be Netherrack or Soulsand when it's already decided that it's air.
 				{
-					NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(BaseX + x)) / 8;
-					NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(BaseZ + z)) / 8;
-					NOISE_DATATYPE CompBlock = m_Noise1.CubicNoise3D(NoiseX, (float) (y + Segment) / 2, NoiseY);
-					if (CompBlock < -0.5)
-					{
-						Block = E_BLOCK_SOULSAND;
-					}
-					else
-					{
-						Block = E_BLOCK_NETHERRACK;
-					}
+					Block = E_BLOCK_NETHERRACK;
 				}
 				a_ChunkDesc.SetBlockType(x, y + Segment, z, Block);
 			}
@@ -638,7 +314,7 @@ void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 			CeilingDisguise = -CeilingDisguise;
 		}
 
-		int CeilingDisguiseHeight = Height - 2 - (int)CeilingDisguise * 3;
+		int CeilingDisguiseHeight = Height - 2 - FloorC(CeilingDisguise * 3);
 
 		for (int y = Height - 1; y > CeilingDisguiseHeight; y--)
 		{
@@ -696,7 +372,7 @@ cCompoGenCache::~cCompoGenCache()
 
 
 
-void cCompoGenCache::ComposeTerrain(cChunkDesc & a_ChunkDesc)
+void cCompoGenCache::ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape)
 {
 	#ifdef _DEBUG
 	if (((m_NumHits + m_NumMisses) % 1024) == 10)
@@ -731,6 +407,7 @@ void cCompoGenCache::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 		// Use the cached data:
 		memcpy(a_ChunkDesc.GetBlockTypes(),             m_CacheData[Idx].m_BlockTypes, sizeof(a_ChunkDesc.GetBlockTypes()));
 		memcpy(a_ChunkDesc.GetBlockMetasUncompressed(), m_CacheData[Idx].m_BlockMetas, sizeof(a_ChunkDesc.GetBlockMetasUncompressed()));
+		memcpy(a_ChunkDesc.GetHeightMap(),              m_CacheData[Idx].m_HeightMap,  sizeof(a_ChunkDesc.GetHeightMap()));
 		
 		m_NumHits++;
 		m_TotalChain += i;
@@ -739,7 +416,7 @@ void cCompoGenCache::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 	
 	// Not in the cache:
 	m_NumMisses++;
-	m_Underlying->ComposeTerrain(a_ChunkDesc);
+	m_Underlying->ComposeTerrain(a_ChunkDesc, a_Shape);
 	
 	// Insert it as the first item in the MRU order:
 	int Idx = m_CacheOrder[m_CacheSize - 1];
@@ -750,6 +427,7 @@ void cCompoGenCache::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 	m_CacheOrder[0] = Idx;
 	memcpy(m_CacheData[Idx].m_BlockTypes, a_ChunkDesc.GetBlockTypes(),             sizeof(a_ChunkDesc.GetBlockTypes()));
 	memcpy(m_CacheData[Idx].m_BlockMetas, a_ChunkDesc.GetBlockMetasUncompressed(), sizeof(a_ChunkDesc.GetBlockMetasUncompressed()));
+	memcpy(m_CacheData[Idx].m_HeightMap,  a_ChunkDesc.GetHeightMap(),              sizeof(a_ChunkDesc.GetHeightMap()));
 	m_CacheData[Idx].m_ChunkX = ChunkX;
 	m_CacheData[Idx].m_ChunkZ = ChunkZ;
 }
diff --git a/src/Generating/CompoGen.h b/src/Generating/CompoGen.h
index b145b6ba3..3847688cd 100644
--- a/src/Generating/CompoGen.h
+++ b/src/Generating/CompoGen.h
@@ -17,7 +17,7 @@
 #pragma once
 
 #include "ComposableGenerator.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
 
 
 
@@ -38,7 +38,7 @@ protected:
 	bool      m_IsBedrocked;
 	
 	// cTerrainCompositionGen overrides:
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
 	virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
 } ;
 
@@ -55,7 +55,7 @@ public:
 protected:
 	
 	// cTerrainCompositionGen overrides:
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
 } ;
 
 
@@ -81,7 +81,7 @@ protected:
 	BLOCKTYPE m_BlockSea;
 	
 	// cTerrainCompositionGen overrides:
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
 	virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
 } ;
 
@@ -89,40 +89,6 @@ protected:
 
 
 
-class cCompoGenBiomal :
-	public cTerrainCompositionGen
-{
-public:
-	cCompoGenBiomal(int a_Seed) :
-		m_Noise(a_Seed + 1000),
-		m_SeaLevel(62)
-	{
-	}
-	
-protected:
-
-	cNoise m_Noise;
-	int    m_SeaLevel;
-	
-	// cTerrainCompositionGen overrides:
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
-	virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
-	
-	void FillColumnGrass    (int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes);
-	void FillColumnClay     (int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes);
-	void FillColumnDirt     (int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes);
-	void FillColumnSand     (int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes);
-	void FillColumnMycelium (int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes);
-	void FillColumnWaterSand(int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes);
-	void FillColumnWaterDirt(int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes);
-	
-	void FillColumnPattern  (int a_RelX, int a_RelZ, int a_Height, cChunkDef::BlockTypes & a_BlockTypes, const BLOCKTYPE * a_Pattern, int a_PatternSize);
-} ;
-
-
-
-
-
 class cCompoGenNether :
 	public cTerrainCompositionGen
 {
@@ -136,7 +102,7 @@ protected:
 	int m_Threshold;
 	
 	// cTerrainCompositionGen overrides:
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
 	virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
 } ;
 
@@ -153,7 +119,7 @@ public:
 	~cCompoGenCache();
 	
 	// cTerrainCompositionGen override:
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
 	virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
 	
 protected:
@@ -166,6 +132,7 @@ protected:
 		int m_ChunkZ;
 		cChunkDef::BlockTypes        m_BlockTypes;
 		cChunkDesc::BlockNibbleBytes m_BlockMetas;  // The metas are uncompressed, 1 meta per byte
+		cChunkDef::HeightMap         m_HeightMap;
 	} ;
 	
 	// To avoid moving large amounts of data for the MRU behavior, we MRU-ize indices to an array of the actual data
diff --git a/src/Generating/CompoGenBiomal.cpp b/src/Generating/CompoGenBiomal.cpp
new file mode 100644
index 000000000..030c2baa5
--- /dev/null
+++ b/src/Generating/CompoGenBiomal.cpp
@@ -0,0 +1,586 @@
+
+// CompoGenBiomal.cpp
+
+// Implements the cCompoGenBiomal class representing the biome-aware composition generator
+
+#include "Globals.h"
+#include "ComposableGenerator.h"
+#include "../IniFile.h"
+#include "../Noise/Noise.h"
+#include "../LinearUpscale.h"
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cPattern:
+
+/** This class is used to store a column pattern initialized at runtime,
+so that the program doesn't need to explicitly set 256 values for each pattern
+Each pattern has 256 blocks so that there's no need to check pattern bounds when assigning the
+pattern - there will always be enough pattern left, even for the whole-chunk-height columns. */
+class cPattern
+{
+public:
+	struct BlockInfo
+	{
+		BLOCKTYPE  m_BlockType;
+		NIBBLETYPE m_BlockMeta;
+	};
+
+	cPattern(BlockInfo * a_TopBlocks, size_t a_Count)
+	{
+		// Copy the pattern into the top:
+		for (size_t i = 0; i < a_Count; i++)
+		{
+			m_Pattern[i] = a_TopBlocks[i];
+		}
+		
+		// Fill the rest with stone:
+		static BlockInfo Stone = {E_BLOCK_STONE, 0};
+		for (int i = static_cast<int>(a_Count); i < cChunkDef::Height; i++)
+		{
+			m_Pattern[i] = Stone;
+		}
+	}
+	
+	const BlockInfo * Get(void) const { return m_Pattern; }
+	
+protected:
+	BlockInfo m_Pattern[cChunkDef::Height];
+} ;
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// The arrays to use for the top block pattern definitions:
+
+static cPattern::BlockInfo tbGrass[] =
+{
+	{E_BLOCK_GRASS, 0},
+	{E_BLOCK_DIRT,  E_META_DIRT_NORMAL},
+	{E_BLOCK_DIRT,  E_META_DIRT_NORMAL},
+	{E_BLOCK_DIRT,  E_META_DIRT_NORMAL},
+} ;
+
+static cPattern::BlockInfo tbSand[] =
+{
+	{ E_BLOCK_SAND, 0},
+	{ E_BLOCK_SAND, 0},
+	{ E_BLOCK_SAND, 0},
+	{ E_BLOCK_SANDSTONE, 0},
+} ;
+
+static cPattern::BlockInfo tbDirt[] =
+{
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+} ;
+
+static cPattern::BlockInfo tbPodzol[] =
+{
+	{E_BLOCK_DIRT, E_META_DIRT_PODZOL},
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+} ;
+
+static cPattern::BlockInfo tbGrassLess[] =
+{
+	{E_BLOCK_DIRT, E_META_DIRT_GRASSLESS},
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
+} ;
+
+static cPattern::BlockInfo tbMycelium[] =
+{
+	{E_BLOCK_MYCELIUM, 0},
+	{E_BLOCK_DIRT,     0},
+	{E_BLOCK_DIRT,     0},
+	{E_BLOCK_DIRT,     0},
+} ;
+
+static cPattern::BlockInfo tbGravel[] =
+{
+	{E_BLOCK_GRAVEL, 0},
+	{E_BLOCK_GRAVEL, 0},
+	{E_BLOCK_GRAVEL, 0},
+	{E_BLOCK_STONE,  0},
+} ;
+
+static cPattern::BlockInfo tbStone[] =
+{
+	{E_BLOCK_STONE,   0},
+	{E_BLOCK_STONE,   0},
+	{E_BLOCK_STONE,   0},
+	{E_BLOCK_STONE,   0},
+} ;
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// Ocean floor pattern top-block definitions:
+
+static cPattern::BlockInfo tbOFSand[] =
+{
+	{E_BLOCK_SAND, 0},
+	{E_BLOCK_SAND, 0},
+	{E_BLOCK_SAND, 0},
+	{E_BLOCK_SANDSTONE, 0}
+} ;
+
+static cPattern::BlockInfo tbOFClay[] =
+{
+	{ E_BLOCK_CLAY, 0},
+	{ E_BLOCK_CLAY, 0},
+	{ E_BLOCK_SAND, 0},
+	{ E_BLOCK_SAND, 0},
+} ;
+
+static cPattern::BlockInfo tbOFOrangeClay[] =
+{
+	{ E_BLOCK_STAINED_CLAY, E_META_STAINED_GLASS_ORANGE},
+	{ E_BLOCK_STAINED_CLAY, E_META_STAINED_GLASS_ORANGE},
+	{ E_BLOCK_STAINED_CLAY, E_META_STAINED_GLASS_ORANGE},
+} ;
+
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// Individual patterns to use:
+
+static cPattern patGrass    (tbGrass,     ARRAYCOUNT(tbGrass));
+static cPattern patSand     (tbSand,      ARRAYCOUNT(tbSand));
+static cPattern patDirt     (tbDirt,      ARRAYCOUNT(tbDirt));
+static cPattern patPodzol   (tbPodzol,    ARRAYCOUNT(tbPodzol));
+static cPattern patGrassLess(tbGrassLess, ARRAYCOUNT(tbGrassLess));
+static cPattern patMycelium (tbMycelium,  ARRAYCOUNT(tbMycelium));
+static cPattern patGravel   (tbGravel,    ARRAYCOUNT(tbGravel));
+static cPattern patStone    (tbStone,     ARRAYCOUNT(tbStone));
+
+static cPattern patOFSand      (tbOFSand,       ARRAYCOUNT(tbOFSand));
+static cPattern patOFClay      (tbOFClay,       ARRAYCOUNT(tbOFClay));
+static cPattern patOFOrangeClay(tbOFOrangeClay, ARRAYCOUNT(tbOFOrangeClay));
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cCompoGenBiomal:
+
+class cCompoGenBiomal :
+	public cTerrainCompositionGen
+{
+public:
+	cCompoGenBiomal(int a_Seed) :
+		m_SeaLevel(62),
+		m_OceanFloorSelect(a_Seed + 1),
+		m_MesaFloor(a_Seed + 2)
+	{
+		initMesaPattern(a_Seed);
+	}
+	
+protected:
+	/** The block height at which water is generated instead of air. */
+	int m_SeaLevel;
+
+	/** The pattern used for mesa biomes. Initialized by seed on generator creation. */
+	cPattern::BlockInfo m_MesaPattern[2 * cChunkDef::Height];
+	
+	/** Noise used for selecting between dirt and sand on the ocean floor. */
+	cNoise m_OceanFloorSelect;
+
+	/** Noise used for the floor of the clay blocks in mesa biomes. */
+	cNoise m_MesaFloor;
+
+
+	// cTerrainCompositionGen overrides:
+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override
+	{
+		a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
+		for (int z = 0; z < cChunkDef::Width; z++)
+		{
+			for (int x = 0; x < cChunkDef::Width; x++)
+			{
+				ComposeColumn(a_ChunkDesc, x, z, &(a_Shape[x * 256 + z * 16 * 256]));
+			}  // for x
+		}  // for z
+	}
+
+
+
+	virtual void InitializeCompoGen(cIniFile & a_IniFile) override
+	{
+		m_SeaLevel = a_IniFile.GetValueSetI("Generator", "SeaLevel", m_SeaLevel);
+	}
+	
+
+
+	/** Initializes the m_MesaPattern with a pattern based on the generator's seed. */
+	void initMesaPattern(int a_Seed)
+	{
+		// In a loop, choose whether to use one, two or three layers of stained clay, then choose a color and width for each layer
+		// Separate each group with another layer of hardened clay
+		cNoise patternNoise((unsigned)a_Seed);
+		static NIBBLETYPE allowedColors[] =
+		{
+			E_META_STAINED_CLAY_YELLOW,
+			E_META_STAINED_CLAY_YELLOW,
+			E_META_STAINED_CLAY_RED,
+			E_META_STAINED_CLAY_RED,
+			E_META_STAINED_CLAY_WHITE,
+			E_META_STAINED_CLAY_BROWN,
+			E_META_STAINED_CLAY_BROWN,
+			E_META_STAINED_CLAY_BROWN,
+			E_META_STAINED_CLAY_ORANGE,
+			E_META_STAINED_CLAY_ORANGE,
+			E_META_STAINED_CLAY_ORANGE,
+			E_META_STAINED_CLAY_ORANGE,
+			E_META_STAINED_CLAY_ORANGE,
+			E_META_STAINED_CLAY_ORANGE,
+			E_META_STAINED_CLAY_LIGHTGRAY,
+		} ;
+		static int layerSizes[] =  // Adjust the chance so that thinner layers occur more commonly
+		{
+			1, 1, 1, 1, 1, 1,
+			2, 2, 2, 2,
+			3, 3,
+		} ;
+		int idx = ARRAYCOUNT(m_MesaPattern) - 1;
+		while (idx >= 0)
+		{
+			// A layer group of 1 - 2 color stained clay:
+			int rnd = patternNoise.IntNoise1DInt(idx) / 7;
+			int numLayers = (rnd % 2) + 1;
+			rnd /= 2;
+			for (int lay = 0; lay < numLayers; lay++)
+			{
+				int numBlocks = layerSizes[(rnd % ARRAYCOUNT(layerSizes))];
+				NIBBLETYPE Color = allowedColors[(rnd / 4) % ARRAYCOUNT(allowedColors)];
+				if (
+					((numBlocks == 3) && (numLayers == 2)) ||  // In two-layer mode disallow the 3-high layers:
+					(Color == E_META_STAINED_CLAY_WHITE))      // White stained clay can ever be only 1 block high
+				{
+					numBlocks = 1;
+				}
+				numBlocks = std::min(idx + 1, numBlocks);  // Limit by idx so that we don't have to check inside the loop
+				rnd /= 32;
+				for (int block = 0; block < numBlocks; block++, idx--)
+				{
+					m_MesaPattern[idx].m_BlockMeta = Color;
+					m_MesaPattern[idx].m_BlockType = E_BLOCK_STAINED_CLAY;
+				}  // for block
+			}  // for lay
+
+			// A layer of hardened clay in between the layer group:
+			int numBlocks = (rnd % 4) + 1;  // All heights the same probability
+			if ((numLayers == 2) && (numBlocks < 4))
+			{
+				// For two layers of stained clay, add an extra block of hardened clay:
+				numBlocks++;
+			}
+			numBlocks = std::min(idx + 1, numBlocks);  // Limit by idx so that we don't have to check inside the loop
+			for (int block = 0; block < numBlocks; block++, idx--)
+			{
+				m_MesaPattern[idx].m_BlockMeta = 0;
+				m_MesaPattern[idx].m_BlockType = E_BLOCK_HARDENED_CLAY;
+			}  // for block
+		}  // while (idx >= 0)
+	}
+
+
+
+	/** Composes a single column in a_ChunkDesc. Chooses what to do based on the biome in that column. */
+	void ComposeColumn(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ, const Byte * a_ShapeColumn)
+	{
+		// Frequencies for the podzol floor selecting noise:
+		const NOISE_DATATYPE FrequencyX = 8;
+		const NOISE_DATATYPE FrequencyZ = 8;
+	
+		EMCSBiome Biome = a_ChunkDesc.GetBiome(a_RelX, a_RelZ);
+		switch (Biome)
+		{
+			case biOcean:
+			case biPlains:
+			case biForest:
+			case biTaiga:
+			case biSwampland:
+			case biRiver:
+			case biFrozenOcean:
+			case biFrozenRiver:
+			case biIcePlains:
+			case biIceMountains:
+			case biForestHills:
+			case biTaigaHills:
+			case biExtremeHillsEdge:
+			case biExtremeHillsPlus:
+			case biExtremeHills:
+			case biJungle:
+			case biJungleHills:
+			case biJungleEdge:
+			case biDeepOcean:
+			case biStoneBeach:
+			case biColdBeach:
+			case biBirchForest:
+			case biBirchForestHills:
+			case biRoofedForest:
+			case biColdTaiga:
+			case biColdTaigaHills:
+			case biSavanna:
+			case biSavannaPlateau:
+			case biSunflowerPlains:
+			case biFlowerForest:
+			case biTaigaM:
+			case biSwamplandM:
+			case biIcePlainsSpikes:
+			case biJungleM:
+			case biJungleEdgeM:
+			case biBirchForestM:
+			case biBirchForestHillsM:
+			case biRoofedForestM:
+			case biColdTaigaM:
+			case biSavannaM:
+			case biSavannaPlateauM:
+			{
+				FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patGrass.Get(), a_ShapeColumn);
+				return;
+			}
+
+			case biMegaTaiga:
+			case biMegaTaigaHills:
+			case biMegaSpruceTaiga:
+			case biMegaSpruceTaigaHills:
+			{
+				// Select the pattern to use - podzol, grass or grassless dirt:
+				NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(a_ChunkDesc.GetChunkX() * cChunkDef::Width + a_RelX)) / FrequencyX;
+				NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(a_ChunkDesc.GetChunkZ() * cChunkDef::Width + a_RelZ)) / FrequencyZ;
+				NOISE_DATATYPE Val = m_OceanFloorSelect.CubicNoise2D(NoiseX, NoiseY);
+				const cPattern::BlockInfo * Pattern = (Val < -0.9) ? patGrassLess.Get() : ((Val > 0) ? patPodzol.Get() : patGrass.Get());
+				FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, Pattern, a_ShapeColumn);
+				return;
+			}
+
+			case biDesertHills:
+			case biDesert:
+			case biDesertM:
+			case biBeach:
+			{
+				FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patSand.Get(), a_ShapeColumn);
+				return;
+			}
+		
+			case biMushroomIsland:
+			case biMushroomShore:
+			{
+				FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patMycelium.Get(), a_ShapeColumn);
+				return;
+			}
+
+			case biMesa:
+			case biMesaPlateauF:
+			case biMesaPlateau:
+			case biMesaBryce:
+			case biMesaPlateauFM:
+			case biMesaPlateauM:
+			{
+				// Mesa biomes need special handling, because they don't follow the usual "4 blocks from top pattern",
+				// instead, they provide a "from bottom" pattern with varying base height,
+				// usually 4 blocks below the ocean level
+				FillColumnMesa(a_ChunkDesc, a_RelX, a_RelZ, a_ShapeColumn);
+				return;
+			}
+
+			case biExtremeHillsPlusM:
+			case biExtremeHillsM:
+			{
+				// Select the pattern to use - gravel, stone or grass:
+				NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(a_ChunkDesc.GetChunkX() * cChunkDef::Width + a_RelX)) / FrequencyX;
+				NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(a_ChunkDesc.GetChunkZ() * cChunkDef::Width + a_RelZ)) / FrequencyZ;
+				NOISE_DATATYPE Val = m_OceanFloorSelect.CubicNoise2D(NoiseX, NoiseY);
+				const cPattern::BlockInfo * Pattern = (Val < 0.0) ? patStone.Get() : patGrass.Get();
+				FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, Pattern, a_ShapeColumn);
+				return;
+			}
+			default:
+			{
+				ASSERT(!"Unhandled biome");
+				return;
+			}
+		}  // switch (Biome)
+	}
+	
+
+
+	/** Fills the specified column with the specified pattern; restarts the pattern when air is reached,
+	switches to ocean floor pattern if ocean is reached. Always adds bedrock at the very bottom. */
+	void FillColumnPattern(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ, const cPattern::BlockInfo * a_Pattern, const Byte * a_ShapeColumn)
+	{
+		bool HasHadWater = false;
+		int PatternIdx = 0;
+		int top = std::max(m_SeaLevel, a_ChunkDesc.GetHeight(a_RelX, a_RelZ));
+		for (int y = top; y > 0; y--)
+		{
+			if (a_ShapeColumn[y] > 0)
+			{
+				// "ground" part, use the pattern:
+				a_ChunkDesc.SetBlockTypeMeta(a_RelX, y, a_RelZ, a_Pattern[PatternIdx].m_BlockType, a_Pattern[PatternIdx].m_BlockMeta);
+				PatternIdx++;
+				continue;
+			}
+		
+			// "air" or "water" part:
+			// Reset the pattern index to zero, so that the pattern is repeated from the top again:
+			PatternIdx = 0;
+		
+			if (y >= m_SeaLevel)
+			{
+				// "air" part, do nothing
+				continue;
+			}
+		
+			a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_STATIONARY_WATER);
+			if (HasHadWater)
+			{
+				continue;
+			}
+		
+			// Select the ocean-floor pattern to use:
+			if (a_ChunkDesc.GetBiome(a_RelX, a_RelZ) == biDeepOcean)
+			{
+				a_Pattern = patGravel.Get();
+			}
+			else
+			{
+				a_Pattern = ChooseOceanFloorPattern(a_ChunkDesc.GetChunkX(), a_ChunkDesc.GetChunkZ(), a_RelX, a_RelZ);
+			}
+			HasHadWater = true;
+		}  // for y
+		a_ChunkDesc.SetBlockType(a_RelX, 0, a_RelZ, E_BLOCK_BEDROCK);
+	}
+
+
+
+	/** Fills the specified column with mesa pattern, based on the column height */
+	void FillColumnMesa(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ, const Byte * a_ShapeColumn)
+	{
+		// Frequencies for the clay floor noise:
+		const NOISE_DATATYPE FrequencyX = 50;
+		const NOISE_DATATYPE FrequencyZ = 50;
+
+		int Top = a_ChunkDesc.GetHeight(a_RelX, a_RelZ);
+		if (Top < m_SeaLevel)
+		{
+			// The terrain is below sealevel, handle as regular ocean with red sand floor:
+			FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patOFOrangeClay.Get(), a_ShapeColumn);
+			return;
+		}
+
+		NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(a_ChunkDesc.GetChunkX() * cChunkDef::Width + a_RelX)) / FrequencyX;
+		NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(a_ChunkDesc.GetChunkZ() * cChunkDef::Width + a_RelZ)) / FrequencyZ;
+		int ClayFloor = m_SeaLevel - 6 + (int)(4.f * m_MesaFloor.CubicNoise2D(NoiseX, NoiseY));
+		if (ClayFloor >= Top)
+		{
+			ClayFloor = Top - 1;
+		}
+	
+		if (Top - m_SeaLevel < 5)
+		{
+			// Simple case: top is red sand, then hardened clay down to ClayFloor, then stone:
+			a_ChunkDesc.SetBlockTypeMeta(a_RelX, Top, a_RelZ, E_BLOCK_SAND, E_META_SAND_RED);
+			for (int y = Top - 1; y >= ClayFloor; y--)
+			{
+				a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_HARDENED_CLAY);
+			}
+			for (int y = ClayFloor - 1; y > 0; y--)
+			{
+				a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_STONE);
+			}
+			a_ChunkDesc.SetBlockType(a_RelX, 0, a_RelZ, E_BLOCK_BEDROCK);
+			return;
+		}
+	
+		// Difficult case: use the mesa pattern and watch for overhangs:
+		int PatternIdx = cChunkDef::Height - (Top - ClayFloor);  // We want the block at index ClayFloor to be pattern's 256th block (first stone)
+		const cPattern::BlockInfo * Pattern = m_MesaPattern;
+		bool HasHadWater = false;
+		for (int y = Top; y > 0; y--)
+		{
+			if (a_ShapeColumn[y] > 0)
+			{
+				// "ground" part, use the pattern:
+				a_ChunkDesc.SetBlockTypeMeta(a_RelX, y, a_RelZ, Pattern[PatternIdx].m_BlockType, Pattern[PatternIdx].m_BlockMeta);
+				PatternIdx++;
+				continue;
+			}
+
+			if (y >= m_SeaLevel)
+			{
+				// "air" part, do nothing
+				continue;
+			}
+		
+			// "water" part, fill with water and choose new pattern for ocean floor, if not chosen already:
+			PatternIdx = 0;
+			a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_STATIONARY_WATER);
+			if (HasHadWater)
+			{
+				continue;
+			}
+		
+			// Select the ocean-floor pattern to use:
+			Pattern = ChooseOceanFloorPattern(a_ChunkDesc.GetChunkX(), a_ChunkDesc.GetChunkZ(), a_RelX, a_RelZ);
+			HasHadWater = true;
+		}  // for y
+		a_ChunkDesc.SetBlockType(a_RelX, 0, a_RelZ, E_BLOCK_BEDROCK);
+	}
+
+
+	
+	/** Returns the pattern to use for an ocean floor in the specified column.
+	The returned pattern is guaranteed to be 256 blocks long. */
+	const cPattern::BlockInfo * ChooseOceanFloorPattern(int a_ChunkX, int a_ChunkZ, int a_RelX, int a_RelZ)
+	{
+		// Frequencies for the ocean floor selecting noise:
+		const NOISE_DATATYPE FrequencyX = 3;
+		const NOISE_DATATYPE FrequencyZ = 3;
+
+		// Select the ocean-floor pattern to use:
+		NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(a_ChunkX * cChunkDef::Width + a_RelX)) / FrequencyX;
+		NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(a_ChunkZ * cChunkDef::Width + a_RelZ)) / FrequencyZ;
+		NOISE_DATATYPE Val = m_OceanFloorSelect.CubicNoise2D(NoiseX, NoiseY);
+		if (Val < -0.95)
+		{
+			return patOFClay.Get();
+		}
+		else if (Val < 0)
+		{
+			return patOFSand.Get();
+		}
+		else
+		{
+			return patDirt.Get();
+		}
+	}
+} ;
+
+
+
+
+
+cTerrainCompositionGenPtr CreateCompoGenBiomal(int a_Seed)
+{
+	return std::make_shared<cCompoGenBiomal>(a_Seed);
+}
+
+
+
diff --git a/src/Generating/CompoGenBiomal.h b/src/Generating/CompoGenBiomal.h
new file mode 100644
index 000000000..a3a65d3dc
--- /dev/null
+++ b/src/Generating/CompoGenBiomal.h
@@ -0,0 +1,21 @@
+
+// CompoGenBiomal.h
+
+
+
+
+
+#pragma once
+
+#include "ComposableGenerator.h"
+
+
+
+
+
+/** Returns a new instance of the Biomal composition generator. */
+cTerrainCompositionGenPtr CreateCompoGenBiomal(int a_Seed);
+
+
+
+
diff --git a/src/Generating/ComposableGenerator.cpp b/src/Generating/ComposableGenerator.cpp
index 169821050..bda45ad92 100644
--- a/src/Generating/ComposableGenerator.cpp
+++ b/src/Generating/ComposableGenerator.cpp
@@ -17,6 +17,10 @@
 #include "StructGen.h"
 #include "FinishGen.h"
 
+#include "CompoGenBiomal.h"
+
+#include "CompositedHeiGen.h"
+
 #include "Caves.h"
 #include "DistortedHeightmap.h"
 #include "DungeonRoomsFinisher.h"
@@ -39,7 +43,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 // cTerrainCompositionGen:
 
-cTerrainCompositionGenPtr cTerrainCompositionGen::CreateCompositionGen(cIniFile & a_IniFile, cBiomeGenPtr a_BiomeGen, cTerrainHeightGen & a_HeightGen, int a_Seed)
+cTerrainCompositionGenPtr cTerrainCompositionGen::CreateCompositionGen(cIniFile & a_IniFile, cBiomeGenPtr a_BiomeGen, cTerrainShapeGenPtr a_ShapeGen, int a_Seed)
 {
 	AString CompoGenName = a_IniFile.GetValueSet("Generator", "CompositionGen", "");
 	if (CompoGenName.empty())
@@ -48,59 +52,52 @@ cTerrainCompositionGenPtr cTerrainCompositionGen::CreateCompositionGen(cIniFile
 		CompoGenName = "Biomal";
 	}
 	
-	cTerrainCompositionGen * res = nullptr;
-	if (NoCaseCompare(CompoGenName, "sameblock") == 0)
+	// Compositor list is alpha-sorted
+	cTerrainCompositionGenPtr res;
+	if (NoCaseCompare(CompoGenName, "Biomal") == 0)
+	{
+		res = CreateCompoGenBiomal(a_Seed);
+	}
+	else if (NoCaseCompare(CompoGenName, "BiomalNoise3D") == 0)
 	{
-		res = new cCompoGenSameBlock;
+		// The composition that used to be provided with BiomalNoise3D is now provided by the Biomal compositor:
+		res = CreateCompoGenBiomal(a_Seed);
 	}
-	else if (NoCaseCompare(CompoGenName, "debugbiomes") == 0)
+	else if (NoCaseCompare(CompoGenName, "Classic") == 0)
 	{
-		res = new cCompoGenDebugBiomes;
+		res = std::make_shared<cCompoGenClassic>();
 	}
-	else if (NoCaseCompare(CompoGenName, "classic") == 0)
+	else if (NoCaseCompare(CompoGenName, "DebugBiomes") == 0)
 	{
-		res = new cCompoGenClassic;
+		res = std::make_shared<cCompoGenDebugBiomes>();
 	}
 	else if (NoCaseCompare(CompoGenName, "DistortedHeightmap") == 0)
 	{
-		res = new cDistortedHeightmap(a_Seed, a_BiomeGen);
+		// The composition that used to be provided with DistortedHeightmap is now provided by the Biomal compositor:
+		res = CreateCompoGenBiomal(a_Seed);
 	}
-	else if (NoCaseCompare(CompoGenName, "end") == 0)
+	else if (NoCaseCompare(CompoGenName, "End") == 0)
 	{
-		res = new cEndGen(a_Seed);
+		res = std::make_shared<cEndGen>(a_Seed);
 	}
-	else if (NoCaseCompare(CompoGenName, "nether") == 0)
+	else if (NoCaseCompare(CompoGenName, "Nether") == 0)
 	{
-		res = new cCompoGenNether(a_Seed);
+		res = std::make_shared<cCompoGenNether>(a_Seed);
 	}
 	else if (NoCaseCompare(CompoGenName, "Noise3D") == 0)
 	{
-		res = new cNoise3DComposable(a_Seed);
+		// The composition that used to be provided with Noise3D is now provided by the Biomal compositor:
+		res = CreateCompoGenBiomal(a_Seed);
 	}
-	else if (NoCaseCompare(CompoGenName, "biomal") == 0)
+	else if (NoCaseCompare(CompoGenName, "SameBlock") == 0)
 	{
-		res = new cCompoGenBiomal(a_Seed);
-
-		/*
-		// Performance-testing:
-		LOGINFO("Measuring performance of cCompoGenBiomal...");
-		clock_t BeginTick = clock();
-		for (int x = 0; x < 500; x++)
-		{
-			cChunkDesc Desc(200 + x * 8, 200 + x * 8);
-			a_BiomeGen->GenBiomes(Desc.GetChunkX(), Desc.GetChunkZ(), Desc.GetBiomeMap());
-			a_HeightGen->GenHeightMap(Desc.GetChunkX(), Desc.GetChunkZ(), Desc.GetHeightMap());
-			res->ComposeTerrain(Desc);
-		}
-		clock_t Duration = clock() - BeginTick;
-		LOGINFO("CompositionGen for 500 chunks took %d ticks (%.02f sec)", Duration, (double)Duration / CLOCKS_PER_SEC);
-		//*/
+		res = std::make_shared<cCompoGenSameBlock>();
 	}
 	else
 	{
 		LOGWARN("Unknown CompositionGen \"%s\", using \"Biomal\" instead.", CompoGenName.c_str());
 		a_IniFile.SetValue("Generator", "CompositionGen", "Biomal");
-		return CreateCompositionGen(a_IniFile, a_BiomeGen, a_HeightGen, a_Seed);
+		return CreateCompositionGen(a_IniFile, a_BiomeGen, a_ShapeGen, a_Seed);
 	}
 	ASSERT(res != nullptr);
 	
@@ -120,7 +117,7 @@ cTerrainCompositionGenPtr cTerrainCompositionGen::CreateCompositionGen(cIniFile
 cComposableGenerator::cComposableGenerator(cChunkGenerator & a_ChunkGenerator) :
 	super(a_ChunkGenerator),
 	m_BiomeGen(),
-	m_HeightGen(),
+	m_ShapeGen(),
 	m_CompositionGen()
 {
 }
@@ -134,7 +131,7 @@ void cComposableGenerator::Initialize(cIniFile & a_IniFile)
 	super::Initialize(a_IniFile);
 	
 	InitBiomeGen(a_IniFile);
-	InitHeightGen(a_IniFile);
+	InitShapeGen(a_IniFile);
 	InitCompositionGen(a_IniFile);
 	InitFinishGens(a_IniFile);
 }
@@ -162,16 +159,22 @@ void cComposableGenerator::DoGenerate(int a_ChunkX, int a_ChunkZ, cChunkDesc & a
 		m_BiomeGen->GenBiomes(a_ChunkX, a_ChunkZ, a_ChunkDesc.GetBiomeMap());
 	}
 	
+	cChunkDesc::Shape shape;
 	if (a_ChunkDesc.IsUsingDefaultHeight())
 	{
-		m_HeightGen->GenHeightMap(a_ChunkX, a_ChunkZ, a_ChunkDesc.GetHeightMap());
+		m_ShapeGen->GenShape(a_ChunkX, a_ChunkZ, shape);
+		a_ChunkDesc.SetHeightFromShape(shape);
+	}
+	else
+	{
+		// Convert the heightmap in a_ChunkDesc into shape:
+		a_ChunkDesc.GetShapeFromHeight(shape);
 	}
 	
 	bool ShouldUpdateHeightmap = false;
 	if (a_ChunkDesc.IsUsingDefaultComposition())
 	{
-		m_CompositionGen->ComposeTerrain(a_ChunkDesc);
-		ShouldUpdateHeightmap = true;
+		m_CompositionGen->ComposeTerrain(a_ChunkDesc, shape);
 	}
 
 	if (a_ChunkDesc.IsUsingDefaultFinish())
@@ -230,13 +233,15 @@ void cComposableGenerator::InitBiomeGen(cIniFile & a_IniFile)
 
 
 
-void cComposableGenerator::InitHeightGen(cIniFile & a_IniFile)
+void cComposableGenerator::InitShapeGen(cIniFile & a_IniFile)
 {
 	bool CacheOffByDefault = false;
-	m_HeightGen = cTerrainHeightGen::CreateHeightGen(a_IniFile, m_BiomeGen, m_ChunkGenerator.GetSeed(), CacheOffByDefault);
+	m_ShapeGen = cTerrainShapeGen::CreateShapeGen(a_IniFile, m_BiomeGen, m_ChunkGenerator.GetSeed(), CacheOffByDefault);
 	
+	/*
+	// TODO
 	// Add a cache, if requested:
-	int CacheSize = a_IniFile.GetValueSetI("Generator", "HeightGenCacheSize", CacheOffByDefault ? 0 : 64);
+	int CacheSize = a_IniFile.GetValueSetI("Generator", "ShapeGenCacheSize", CacheOffByDefault ? 0 : 64);
 	if (CacheSize > 0)
 	{
 		if (CacheSize < 4)
@@ -249,6 +254,7 @@ void cComposableGenerator::InitHeightGen(cIniFile & a_IniFile)
 		LOGD("Using a cache for Heightgen of size %d.", CacheSize);
 		m_HeightGen = cTerrainHeightGenPtr(new cHeiGenCache(m_HeightGen, CacheSize));
 	}
+	*/
 }
 
 
@@ -257,13 +263,19 @@ void cComposableGenerator::InitHeightGen(cIniFile & a_IniFile)
 
 void cComposableGenerator::InitCompositionGen(cIniFile & a_IniFile)
 {
-	m_CompositionGen = cTerrainCompositionGen::CreateCompositionGen(a_IniFile, m_BiomeGen, *m_HeightGen, m_ChunkGenerator.GetSeed());
+	m_CompositionGen = cTerrainCompositionGen::CreateCompositionGen(a_IniFile, m_BiomeGen, m_ShapeGen, m_ChunkGenerator.GetSeed());
 	
+	// Add a cache over the composition generator:
+	// Even a cache of size 1 is useful due to the CompositedHeiGen cache after us doing re-composition on its misses
 	int CompoGenCacheSize = a_IniFile.GetValueSetI("Generator", "CompositionGenCacheSize", 64);
-	if (CompoGenCacheSize > 1)
+	if (CompoGenCacheSize > 0)
 	{
-		m_CompositionGen = cTerrainCompositionGenPtr(new cCompoGenCache(m_CompositionGen, 32));
+		m_CompositionGen = std::make_shared<cCompoGenCache>(m_CompositionGen, CompoGenCacheSize);
 	}
+
+	// Create a cache of the composited heightmaps, so that finishers may use it:
+	m_CompositedHeightCache = std::make_shared<cHeiGenMultiCache>(std::make_shared<cCompositedHeiGen>(m_ShapeGen, m_CompositionGen), 16, 24);
+	// 24 subcaches of depth 16 each = 96 KiB of RAM. Acceptable, for the amount of work this saves.
 }
 
 
@@ -282,7 +294,11 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 	for (AStringVector::const_iterator itr = Str.begin(); itr != Str.end(); ++itr)
 	{
 		// Finishers, alpha-sorted:
-		if (NoCaseCompare(*itr, "BottomLava") == 0)
+		if (NoCaseCompare(*itr, "Animals") == 0)
+		{
+			m_FinishGens.push_back(cFinishGenPtr(new cFinishGenPassiveMobs(Seed, a_IniFile, Dimension)));
+		}
+		else if (NoCaseCompare(*itr, "BottomLava") == 0)
 		{
 			int DefaultBottomLavaLevel = (Dimension == dimNether) ? 30 : 10;
 			int BottomLavaLevel = a_IniFile.GetValueSetI("Generator", "BottomLavaLevel", DefaultBottomLavaLevel);
@@ -329,7 +345,7 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 			int     MaxSize       = a_IniFile.GetValueSetI("Generator", "DungeonRoomsMaxSize", 7);
 			int     MinSize       = a_IniFile.GetValueSetI("Generator", "DungeonRoomsMinSize", 5);
 			AString HeightDistrib = a_IniFile.GetValueSet ("Generator", "DungeonRoomsHeightDistrib", "0, 0; 10, 10; 11, 500; 40, 500; 60, 40; 90, 1");
-			m_FinishGens.push_back(cFinishGenPtr(new cDungeonRoomsFinisher(m_HeightGen, Seed, GridSize, MaxSize, MinSize, HeightDistrib)));
+			m_FinishGens.push_back(cFinishGenPtr(new cDungeonRoomsFinisher(m_ShapeGen, Seed, GridSize, MaxSize, MinSize, HeightDistrib)));
 		}
 		else if (NoCaseCompare(*itr, "Ice") == 0)
 		{
@@ -338,7 +354,7 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 		else if (NoCaseCompare(*itr, "LavaLakes") == 0)
 		{
 			int Probability = a_IniFile.GetValueSetI("Generator", "LavaLakesProbability", 10);
-			m_FinishGens.push_back(cFinishGenPtr(new cStructGenLakes(Seed * 5 + 16873, E_BLOCK_STATIONARY_LAVA, m_HeightGen, Probability)));
+			m_FinishGens.push_back(cFinishGenPtr(new cStructGenLakes(Seed * 5 + 16873, E_BLOCK_STATIONARY_LAVA, m_ShapeGen, Probability)));
 		}
 		else if (NoCaseCompare(*itr, "LavaSprings") == 0)
 		{
@@ -558,6 +574,10 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 				GridSize, MaxOffset
 			)));
 		}
+		else if (NoCaseCompare(*itr, "SoulsandRims") == 0)
+		{
+			m_FinishGens.push_back(cFinishGenPtr(new cFinishGenSoulsandRims(Seed)));
+		}
 		else if (NoCaseCompare(*itr, "Snow") == 0)
 		{
 			m_FinishGens.push_back(cFinishGenPtr(new cFinishGenSnow));
@@ -576,7 +596,7 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 		}
 		else if (NoCaseCompare(*itr, "Trees") == 0)
 		{
-			m_FinishGens.push_back(cFinishGenPtr(new cStructGenTrees(Seed, m_BiomeGen, m_HeightGen, m_CompositionGen)));
+			m_FinishGens.push_back(cFinishGenPtr(new cStructGenTrees(Seed, m_BiomeGen, m_ShapeGen, m_CompositionGen)));
 		}
 		else if (NoCaseCompare(*itr, "UnderwaterBases") == 0)
 		{
@@ -584,7 +604,7 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 			int MaxOffset = a_IniFile.GetValueSetI("Generator", "UnderwaterBaseMaxOffset", 128);
 			int MaxDepth  = a_IniFile.GetValueSetI("Generator", "UnderwaterBaseMaxDepth",    7);
 			int MaxSize   = a_IniFile.GetValueSetI("Generator", "UnderwaterBaseMaxSize",   128);
-			m_FinishGens.push_back(cFinishGenPtr(new cUnderwaterBaseGen(Seed, GridSize, MaxOffset, MaxDepth, MaxSize, m_BiomeGen)));
+			m_FinishGens.push_back(std::make_shared<cUnderwaterBaseGen>(Seed, GridSize, MaxOffset, MaxDepth, MaxSize, m_BiomeGen));
 		}
 		else if (NoCaseCompare(*itr, "Villages") == 0)
 		{
@@ -594,12 +614,12 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 			int MaxSize    = a_IniFile.GetValueSetI("Generator", "VillageMaxSize",   128);
 			int MinDensity = a_IniFile.GetValueSetI("Generator", "VillageMinDensity", 50);
 			int MaxDensity = a_IniFile.GetValueSetI("Generator", "VillageMaxDensity", 80);
-			m_FinishGens.push_back(cFinishGenPtr(new cVillageGen(Seed, GridSize, MaxOffset, MaxDepth, MaxSize, MinDensity, MaxDensity, m_BiomeGen, m_HeightGen)));
+			m_FinishGens.push_back(std::make_shared<cVillageGen>(Seed, GridSize, MaxOffset, MaxDepth, MaxSize, MinDensity, MaxDensity, m_BiomeGen, m_CompositedHeightCache));
 		}
 		else if (NoCaseCompare(*itr, "WaterLakes") == 0)
 		{
 			int Probability = a_IniFile.GetValueSetI("Generator", "WaterLakesProbability", 25);
-			m_FinishGens.push_back(cFinishGenPtr(new cStructGenLakes(Seed * 3 + 652, E_BLOCK_STATIONARY_WATER, m_HeightGen, Probability)));
+			m_FinishGens.push_back(cFinishGenPtr(new cStructGenLakes(Seed * 3 + 652, E_BLOCK_STATIONARY_WATER, m_ShapeGen, Probability)));
 		}
 		else if (NoCaseCompare(*itr, "WaterSprings") == 0)
 		{
diff --git a/src/Generating/ComposableGenerator.h b/src/Generating/ComposableGenerator.h
index a091f8d53..86c30e090 100644
--- a/src/Generating/ComposableGenerator.h
+++ b/src/Generating/ComposableGenerator.h
@@ -26,20 +26,16 @@ See http://forum.mc-server.org/showthread.php?tid=409 for details.
 
 // Forward-declare the shared pointers to subgenerator classes:
 class cBiomeGen;
+class cTerrainShapeGen;
 class cTerrainHeightGen;
 class cTerrainCompositionGen;
 class cFinishGen;
 typedef SharedPtr<cBiomeGen>              cBiomeGenPtr;
+typedef SharedPtr<cTerrainShapeGen>       cTerrainShapeGenPtr;
 typedef SharedPtr<cTerrainHeightGen>      cTerrainHeightGenPtr;
 typedef SharedPtr<cTerrainCompositionGen> cTerrainCompositionGenPtr;
 typedef SharedPtr<cFinishGen>             cFinishGenPtr;
 
-// fwd: Noise3DGenerator.h
-class cNoise3DComposable;
-
-// fwd: DistortedHeightmap.h
-class cDistortedHeightmap;
-
 
 
 
@@ -70,28 +66,54 @@ public:
 
 
 
-/** The interface that a terrain height generator must implement
-A terrain height generator takes chunk coords on input and outputs an array of terrain heights for that chunk.
-The output array is sequenced in the same way as the BiomeGen's biome data.
+/** The interface that a terrain shape generator must implement
+A terrain shape generator takes chunk coords on input and outputs a 3D array of "shape" for that chunk. The shape here
+represents the distinction between air and solid; there's no representation of Water since that is added by the
+composition geenrator.
+The output array is indexed [y + 256 * z + 16 * 256 * x], so that it's fast to later compose a single column of the terrain,
+which is the dominant operation following the shape generation.
 The generator may request biome information from the underlying BiomeGen, it may even request information for
-other chunks than the one it's currently generating (possibly neighbors - for averaging)
+other chunks than the one it's currently generating (neighbors - for averaging)
 */
-class cTerrainHeightGen
+class cTerrainShapeGen
 {
 public:
-	virtual ~cTerrainHeightGen() {}  // Force a virtual destructor in descendants
+	virtual ~cTerrainShapeGen() {}  // Force a virtual destructor in descendants
 	
-	/** Generates heightmap for the given chunk */
-	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) = 0;
+	/** Generates the shape for the given chunk */
+	virtual void GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape) = 0;
 	
 	/** Reads parameters from the ini file, prepares generator for use. */
-	virtual void InitializeHeightGen(cIniFile & a_IniFile) {}
+	virtual void InitializeShapeGen(cIniFile & a_IniFile) {}
 	
-	/** Creates the correct TerrainHeightGen descendant based on the ini file settings and the seed provided.
-	a_BiomeGen is the underlying biome generator, some height generators may depend on it to generate more biomes
+	/** Creates the correct TerrainShapeGen descendant based on the ini file settings and the seed provided.
+	a_BiomeGen is the underlying biome generator, some shape generators may depend on it providing additional biomes data around the chunk
 	a_CacheOffByDefault gets set to whether the cache should be disabled by default
-	Implemented in HeiGen.cpp!
+	Implemented in ShapeGen.cpp!
 	*/
+	static cTerrainShapeGenPtr CreateShapeGen(cIniFile & a_IniFile, cBiomeGenPtr a_BiomeGen, int a_Seed, bool & a_CacheOffByDefault);
+} ;
+
+
+
+
+
+/** The interface that is used to query terrain height from the shape generator.
+Usually the structure generators require only the final heightmap, and generating the whole shape only to
+consume the heightmap is wasteful, so this interface is used instead; it has a cache implemented over it so
+that data is retained. */
+class cTerrainHeightGen
+{
+public:
+	virtual ~cTerrainHeightGen() {}  // Force a virtual destructor in descendants
+
+	/** Retrieves the heightmap for the specified chunk. */
+	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) = 0;
+
+	/** Initializes the generator, reading its parameters from the INI file. */
+	virtual void InitializeHeightGen(cIniFile & a_IniFile) {}
+
+	/** Creates a cTerrainHeightGen descendant based on the INI file settings. */
 	static cTerrainHeightGenPtr CreateHeightGen(cIniFile & a_IniFile, cBiomeGenPtr a_BiomeGen, int a_Seed, bool & a_CacheOffByDefault);
 } ;
 
@@ -109,16 +131,18 @@ class cTerrainCompositionGen
 public:
 	virtual ~cTerrainCompositionGen() {}  // Force a virtual destructor in descendants
 	
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) = 0;
+	/** Generates the chunk's composition into a_ChunkDesc, using the terrain shape provided in a_Shape.
+	Is expected to fill a_ChunkDesc's heightmap with the data from a_Shape. */
+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) = 0;
 	
 	/** Reads parameters from the ini file, prepares generator for use. */
 	virtual void InitializeCompoGen(cIniFile & a_IniFile) {}
 	
 	/** Creates the correct TerrainCompositionGen descendant based on the ini file settings and the seed provided.
-	a_BiomeGen is the underlying biome generator, some composition generators may depend on it to generate more biomes
-	a_HeightGen is the underlying height generator, some composition generators may depend on it providing additional values
+	a_BiomeGen is the underlying biome generator, some composition generators may depend on it providing additional biomes around the chunk
+	a_ShapeGen is the underlying shape generator, some composition generators may depend on it providing additional shape around the chunk
 	*/
-	static cTerrainCompositionGenPtr CreateCompositionGen(cIniFile & a_IniFile, cBiomeGenPtr a_BiomeGen, cTerrainHeightGen & a_HeightGen, int a_Seed);
+	static cTerrainCompositionGenPtr CreateCompositionGen(cIniFile & a_IniFile, cBiomeGenPtr a_BiomeGen, cTerrainShapeGenPtr a_ShapeGen, int a_Seed);
 } ;
 
 
@@ -128,7 +152,7 @@ public:
 /** The interface that a finisher must implement
 Finisher implements changes to the chunk after the rough terrain has been generated.
 Examples of finishers are trees, snow, ore, lilypads and others.
-Note that a worldgenerator may contain multiple finishers.
+Note that a worldgenerator may contain multiple finishers, chained one after another.
 Also note that previously we used to distinguish between a structuregen and a finisher; this distinction is
 no longer relevant, all structure generators are considered finishers now (#398)
 */
@@ -154,23 +178,34 @@ class cComposableGenerator :
 public:
 	cComposableGenerator(cChunkGenerator & a_ChunkGenerator);
 	
+	// cChunkGenerator::cGenerator overrides:
 	virtual void Initialize(cIniFile & a_IniFile) override;
 	virtual void GenerateBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap) override;
 	virtual void DoGenerate(int a_ChunkX, int a_ChunkZ, cChunkDesc & a_ChunkDesc) override;
 
 protected:
-	// The generation composition:
-	cBiomeGenPtr              m_BiomeGen;
-	cTerrainHeightGenPtr      m_HeightGen;
+	// The generator's composition:
+	/** The biome generator. */
+	cBiomeGenPtr m_BiomeGen;
+
+	/** The terrain shape generator. */
+	cTerrainShapeGenPtr m_ShapeGen;
+
+	/** The terrain composition generator. */
 	cTerrainCompositionGenPtr m_CompositionGen;
-	cFinishGenList            m_FinishGens;
+
+	/** The cache for the heights of the composited terrain. */
+	cTerrainHeightGenPtr m_CompositedHeightCache;
+
+	/** The finisher generators, in the order in which they are applied. */
+	cFinishGenList m_FinishGens;
 	
 	
-	/** Reads the biome gen settings from the ini and initializes m_BiomeGen accordingly */
+	/** Reads the BiomeGen settings from the ini and initializes m_BiomeGen accordingly */
 	void InitBiomeGen(cIniFile & a_IniFile);
 	
-	/** Reads the HeightGen settings from the ini and initializes m_HeightGen accordingly */
-	void InitHeightGen(cIniFile & a_IniFile);
+	/** Reads the ShapeGen settings from the ini and initializes m_ShapeGen accordingly */
+	void InitShapeGen(cIniFile & a_IniFile);
 	
 	/** Reads the CompositionGen settings from the ini and initializes m_CompositionGen accordingly */
 	void InitCompositionGen(cIniFile & a_IniFile);
diff --git a/src/Generating/CompositedHeiGen.h b/src/Generating/CompositedHeiGen.h
new file mode 100644
index 000000000..fa33a7861
--- /dev/null
+++ b/src/Generating/CompositedHeiGen.h
@@ -0,0 +1,49 @@
+
+// CompositedHeiGen.h
+
+// Declares the cCompositedHeiGen class representing a cTerrainHeightGen descendant that calculates heightmap of the composited terrain
+// This is used to further cache heightmaps for chunks already generated for finishers that require only heightmap information
+
+
+
+
+
+#pragma once
+
+#include "ComposableGenerator.h"
+
+
+
+
+
+class cCompositedHeiGen:
+	public cTerrainHeightGen
+{
+public:
+	cCompositedHeiGen(cTerrainShapeGenPtr a_ShapeGen, cTerrainCompositionGenPtr a_CompositionGen):
+		m_ShapeGen(a_ShapeGen),
+		m_CompositionGen(a_CompositionGen)
+	{
+	}
+
+
+
+	// cTerrainheightGen overrides:
+	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override
+	{
+		cChunkDesc::Shape shape;
+		m_ShapeGen->GenShape(a_ChunkX, a_ChunkZ, shape);
+		cChunkDesc desc(a_ChunkX, a_ChunkZ);
+		desc.SetHeightFromShape(shape);
+		m_CompositionGen->ComposeTerrain(desc, shape);
+		memcpy(a_HeightMap, desc.GetHeightMap(), sizeof(a_HeightMap));
+	}
+
+protected:
+	cTerrainShapeGenPtr m_ShapeGen;
+	cTerrainCompositionGenPtr m_CompositionGen;
+};
+
+
+
+
diff --git a/src/Generating/DistortedHeightmap.cpp b/src/Generating/DistortedHeightmap.cpp
index d5bc6ab55..37a51c18e 100644
--- a/src/Generating/DistortedHeightmap.cpp
+++ b/src/Generating/DistortedHeightmap.cpp
@@ -15,163 +15,6 @@
 
 
 ////////////////////////////////////////////////////////////////////////////////
-// cPattern:
-
-/// This class is used to store a column pattern initialized at runtime,
-/// so that the program doesn't need to explicitly set 256 values for each pattern
-/// Each pattern has 256 blocks so that there's no need to check pattern bounds when assigning the
-/// pattern - there will always be enough pattern left, even for the whole chunk height
-class cPattern
-{
-public:
-	cPattern(cDistortedHeightmap::sBlockInfo * a_TopBlocks, size_t a_Count)
-	{
-		// Copy the pattern into the top:
-		for (size_t i = 0; i < a_Count; i++)
-		{
-			m_Pattern[i] = a_TopBlocks[i];
-		}
-		
-		// Fill the rest with stone:
-		static cDistortedHeightmap::sBlockInfo Stone = {E_BLOCK_STONE, 0};
-		for (size_t i = a_Count; i < cChunkDef::Height; i++)
-		{
-			m_Pattern[i] = Stone;
-		}
-	}
-	
-	const cDistortedHeightmap::sBlockInfo * Get(void) const { return m_Pattern; }
-	
-protected:
-	cDistortedHeightmap::sBlockInfo m_Pattern[cChunkDef::Height];
-} ;
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-// The arrays to use for the top block pattern definitions:
-
-static cDistortedHeightmap::sBlockInfo tbGrass[] =
-{
-	{E_BLOCK_GRASS, 0},
-	{E_BLOCK_DIRT,  E_META_DIRT_NORMAL},
-	{E_BLOCK_DIRT,  E_META_DIRT_NORMAL},
-	{E_BLOCK_DIRT,  E_META_DIRT_NORMAL},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbSand[] =
-{
-	{ E_BLOCK_SAND, 0},
-	{ E_BLOCK_SAND, 0},
-	{ E_BLOCK_SAND, 0},
-	{ E_BLOCK_SANDSTONE, 0},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbDirt[] =
-{
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbPodzol[] =
-{
-	{E_BLOCK_DIRT, E_META_DIRT_PODZOL},
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbGrassLess[] =
-{
-	{E_BLOCK_DIRT, E_META_DIRT_GRASSLESS},
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-	{E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbMycelium[] =
-{
-	{E_BLOCK_MYCELIUM, 0},
-	{E_BLOCK_DIRT,     0},
-	{E_BLOCK_DIRT,     0},
-	{E_BLOCK_DIRT,     0},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbGravel[] =
-{
-	{E_BLOCK_GRAVEL, 0},
-	{E_BLOCK_GRAVEL, 0},
-	{E_BLOCK_GRAVEL, 0},
-	{E_BLOCK_STONE,  0},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbStone[] =
-{
-	{E_BLOCK_STONE,   0},
-	{E_BLOCK_STONE,   0},
-	{E_BLOCK_STONE,   0},
-	{E_BLOCK_STONE,   0},
-} ;
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-// Ocean floor pattern top-block definitions:
-
-static cDistortedHeightmap::sBlockInfo tbOFSand[] =
-{
-	{E_BLOCK_SAND, 0},
-	{E_BLOCK_SAND, 0},
-	{E_BLOCK_SAND, 0},
-	{E_BLOCK_SANDSTONE, 0}
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbOFClay[] =
-{
-	{ E_BLOCK_CLAY, 0},
-	{ E_BLOCK_CLAY, 0},
-	{ E_BLOCK_SAND, 0},
-	{ E_BLOCK_SAND, 0},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbOFRedSand[] =
-{
-	{ E_BLOCK_SAND,      E_META_SAND_RED},
-	{ E_BLOCK_SAND,      E_META_SAND_RED},
-	{ E_BLOCK_SAND,      E_META_SAND_RED},
-	{ E_BLOCK_SANDSTONE, 0},
-} ;
-
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-// Individual patterns to use:
-
-static cPattern patGrass    (tbGrass,     ARRAYCOUNT(tbGrass));
-static cPattern patSand     (tbSand,      ARRAYCOUNT(tbSand));
-static cPattern patDirt     (tbDirt,      ARRAYCOUNT(tbDirt));
-static cPattern patPodzol   (tbPodzol,    ARRAYCOUNT(tbPodzol));
-static cPattern patGrassLess(tbGrassLess, ARRAYCOUNT(tbGrassLess));
-static cPattern patMycelium (tbMycelium,  ARRAYCOUNT(tbMycelium));
-static cPattern patGravel   (tbGravel,    ARRAYCOUNT(tbGravel));
-static cPattern patStone    (tbStone,     ARRAYCOUNT(tbStone));
-
-static cPattern patOFSand   (tbOFSand,    ARRAYCOUNT(tbOFSand));
-static cPattern patOFClay   (tbOFClay,    ARRAYCOUNT(tbOFClay));
-static cPattern patOFRedSand(tbOFRedSand, ARRAYCOUNT(tbOFRedSand));
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
 // cDistortedHeightmap:
 
 /** This table assigns a relative maximum overhang size in each direction to biomes.
@@ -237,7 +80,7 @@ const cDistortedHeightmap::sGenParam cDistortedHeightmap::m_GenParam[256] =
 	{0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f},  // 110 .. 119
 	{0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f},                // 120 .. 128
 	
-	// Release 1.7 /* biome variants:
+	// Release 1.7 biome variants:
 	/* biSunflowerPlains      */ { 1.0f,  1.0f},  // 129
 	/* biDesertM              */ { 1.0f,  1.0f},  // 130
 	/* biExtremeHillsM        */ {16.0f, 16.0f},  // 131
@@ -279,8 +122,8 @@ const cDistortedHeightmap::sGenParam cDistortedHeightmap::m_GenParam[256] =
 cDistortedHeightmap::cDistortedHeightmap(int a_Seed, cBiomeGenPtr a_BiomeGen) :
 	m_NoiseDistortX(a_Seed + 1000),
 	m_NoiseDistortZ(a_Seed + 2000),
-	m_OceanFloorSelect(a_Seed + 3000),
-	m_MesaFloor(a_Seed + 4000),
+	m_CurChunkX(0x7fffffff),  // Set impossible coords for the chunk so that it's always considered stale
+	m_CurChunkZ(0x7fffffff),
 	m_BiomeGen(a_BiomeGen),
 	m_UnderlyingHeiGen(new cHeiGenBiomal(a_Seed, a_BiomeGen)),
 	m_HeightGen(m_UnderlyingHeiGen, 64),
@@ -293,8 +136,6 @@ cDistortedHeightmap::cDistortedHeightmap(int a_Seed, cBiomeGenPtr a_BiomeGen) :
 	m_NoiseDistortZ.AddOctave((NOISE_DATATYPE)1,    (NOISE_DATATYPE)0.5);
 	m_NoiseDistortZ.AddOctave((NOISE_DATATYPE)0.5,  (NOISE_DATATYPE)1);
 	m_NoiseDistortZ.AddOctave((NOISE_DATATYPE)0.25, (NOISE_DATATYPE)2);
-	
-	InitMesaPattern(a_Seed);
 }
 
 
@@ -309,7 +150,7 @@ void cDistortedHeightmap::Initialize(cIniFile & a_IniFile)
 	}
 
 	// Read the params from the INI file:
-	m_SeaLevel   =                 a_IniFile.GetValueSetI("Generator", "DistortedHeightmapSeaLevel",   62);
+	m_SeaLevel   =                 a_IniFile.GetValueSetI("Generator", "SeaLevel",                     62);
 	m_FrequencyX = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "DistortedHeightmapFrequencyX", 10);
 	m_FrequencyY = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "DistortedHeightmapFrequencyY", 10);
 	m_FrequencyZ = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "DistortedHeightmapFrequencyZ", 10);
@@ -321,89 +162,6 @@ void cDistortedHeightmap::Initialize(cIniFile & a_IniFile)
 
 
 
-void cDistortedHeightmap::InitMesaPattern(int a_Seed)
-{
-	// Stone in the bottom half of the pattern:
-	for (int i = cChunkDef::Height; i < 2 * cChunkDef::Height; i++)
-	{
-		m_MesaPattern[i].BlockMeta = 0;
-		m_MesaPattern[i].BlockType = E_BLOCK_STONE;
-	}
-
-	// Stained and hardened clay in the top half of the pattern
-	// In a loop, choose whether to use one or two layers of stained clay, then choose a color and width for each layer
-	// Separate each group with another layer of hardened clay
-	cNoise PatternNoise((unsigned)a_Seed);
-	static NIBBLETYPE AllowedColors[] =
-	{
-		E_META_STAINED_CLAY_YELLOW,
-		E_META_STAINED_CLAY_YELLOW,
-		E_META_STAINED_CLAY_RED,
-		E_META_STAINED_CLAY_RED,
-		E_META_STAINED_CLAY_WHITE,
-		E_META_STAINED_CLAY_BROWN,
-		E_META_STAINED_CLAY_BROWN,
-		E_META_STAINED_CLAY_BROWN,
-		E_META_STAINED_CLAY_ORANGE,
-		E_META_STAINED_CLAY_ORANGE,
-		E_META_STAINED_CLAY_ORANGE,
-		E_META_STAINED_CLAY_ORANGE,
-		E_META_STAINED_CLAY_ORANGE,
-		E_META_STAINED_CLAY_ORANGE,
-		E_META_STAINED_CLAY_LIGHTGRAY,
-	} ;
-	static int LayerSizes[] =  // Adjust the chance so that thinner layers occur more commonly
-	{
-		1, 1, 1, 1, 1, 1,
-		2, 2, 2, 2,
-		3, 3,
-	} ;
-	int Idx = cChunkDef::Height - 1;
-	while (Idx >= 0)
-	{
-		// A layer group of 1 - 2 color stained clay:
-		int Random = PatternNoise.IntNoise1DInt(Idx) / 7;
-		int NumLayers = (Random % 2) + 1;
-		Random /= 2;
-		for (int Lay = 0; Lay < NumLayers; Lay++)
-		{
-			int NumBlocks = LayerSizes[(Random % ARRAYCOUNT(LayerSizes))];
-			NIBBLETYPE Color = AllowedColors[(Random / 4) % ARRAYCOUNT(AllowedColors)];
-			if (
-				((NumBlocks == 3) && (NumLayers == 2)) ||  // In two-layer mode disallow the 3-high layers:
-				(Color == E_META_STAINED_CLAY_WHITE))      // White stained clay can ever be only 1 block high
-			{
-				NumBlocks = 1;
-			}
-			NumBlocks = std::min(Idx + 1, NumBlocks);  // Limit by Idx so that we don't have to check inside the loop
-			Random /= 32;
-			for (int Block = 0; Block < NumBlocks; Block++, Idx--)
-			{
-				m_MesaPattern[Idx].BlockMeta = Color;
-				m_MesaPattern[Idx].BlockType = E_BLOCK_STAINED_CLAY;
-			}  // for Block
-		}  // for Lay
-
-		// A layer of hardened clay in between the layer group:
-		int NumBlocks = (Random % 4) + 1;  // All heights the same probability
-		if ((NumLayers == 2) && (NumBlocks < 4))
-		{
-			// For two layers of stained clay, add an extra block of hardened clay:
-			NumBlocks++;
-		}
-		NumBlocks = std::min(Idx + 1, NumBlocks);  // Limit by Idx so that we don't have to check inside the loop
-		for (int Block = 0; Block < NumBlocks; Block++, Idx--)
-		{
-			m_MesaPattern[Idx].BlockMeta = 0;
-			m_MesaPattern[Idx].BlockType = E_BLOCK_HARDENED_CLAY;
-		}  // for Block
-	}  // while (Idx >= 0)
-}
-
-
-
-
-
 void cDistortedHeightmap::PrepareState(int a_ChunkX, int a_ChunkZ)
 {
 	if ((m_CurChunkX == a_ChunkX) && (m_CurChunkZ == a_ChunkZ))
@@ -474,23 +232,17 @@ void cDistortedHeightmap::GenerateHeightArray(void)
 
 
 
-void cDistortedHeightmap::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap)
+void cDistortedHeightmap::GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape)
 {
 	PrepareState(a_ChunkX, a_ChunkZ);
 	for (int z = 0; z < cChunkDef::Width; z++)
 	{
 		for (int x = 0; x < cChunkDef::Width; x++)
 		{
-			int NoiseArrayIdx = x + 17 * 257 * z;
-			cChunkDef::SetHeight(a_HeightMap, x, z, m_SeaLevel - 1);
-			for (int y = cChunkDef::Height - 1; y > m_SeaLevel - 1; y--)
+			int idx = x + 17 * 257 * z;
+			for (int y = 0; y < cChunkDef::Height; y++)
 			{
-				int HeightMapHeight = (int)m_DistortedHeightmap[NoiseArrayIdx + 17 * y];
-				if (y < HeightMapHeight)
-				{
-					cChunkDef::SetHeight(a_HeightMap, x, z, y);
-					break;
-				}
+				a_Shape[y + x * 256 + z * 16 * 256] = (y < m_DistortedHeightmap[idx + y * 17]) ? 1 : 0;
 			}  // for y
 		}  // for x
 	}  // for z
@@ -500,36 +252,7 @@ void cDistortedHeightmap::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::He
 
 
 
-void cDistortedHeightmap::InitializeHeightGen(cIniFile & a_IniFile)
-{
-	Initialize(a_IniFile);
-}
-
-
-
-
-
-void cDistortedHeightmap::ComposeTerrain(cChunkDesc & a_ChunkDesc)
-{
-	// Prepare the internal state for generating this chunk:
-	PrepareState(a_ChunkDesc.GetChunkX(), a_ChunkDesc.GetChunkZ());
-
-	// Compose:
-	a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
-	for (int z = 0; z < cChunkDef::Width; z++)
-	{
-		for (int x = 0; x < cChunkDef::Width; x++)
-		{
-			ComposeColumn(a_ChunkDesc, x, z);
-		}  // for x
-	}  // for z
-}
-
-
-
-
-
-void cDistortedHeightmap::InitializeCompoGen(cIniFile & a_IniFile)
+void cDistortedHeightmap::InitializeShapeGen(cIniFile & a_IniFile)
 {
 	Initialize(a_IniFile);
 }
@@ -654,275 +377,3 @@ void cDistortedHeightmap::GetDistortAmpsAt(BiomeNeighbors & a_Neighbors, int a_R
 
 
 
-void cDistortedHeightmap::ComposeColumn(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ)
-{
-	// Frequencies for the podzol floor selecting noise:
-	const NOISE_DATATYPE FrequencyX = 8;
-	const NOISE_DATATYPE FrequencyZ = 8;
-	
-	EMCSBiome Biome = a_ChunkDesc.GetBiome(a_RelX, a_RelZ);
-	switch (Biome)
-	{
-		case biOcean:
-		case biPlains:
-		case biForest:
-		case biTaiga:
-		case biSwampland:
-		case biRiver:
-		case biFrozenOcean:
-		case biFrozenRiver:
-		case biIcePlains:
-		case biIceMountains:
-		case biForestHills:
-		case biTaigaHills:
-		case biExtremeHillsEdge:
-		case biExtremeHillsPlus:
-		case biExtremeHills:
-		case biJungle:
-		case biJungleHills:
-		case biJungleEdge:
-		case biDeepOcean:
-		case biStoneBeach:
-		case biColdBeach:
-		case biBirchForest:
-		case biBirchForestHills:
-		case biRoofedForest:
-		case biColdTaiga:
-		case biColdTaigaHills:
-		case biSavanna:
-		case biSavannaPlateau:
-		case biSunflowerPlains:
-		case biFlowerForest:
-		case biTaigaM:
-		case biSwamplandM:
-		case biIcePlainsSpikes:
-		case biJungleM:
-		case biJungleEdgeM:
-		case biBirchForestM:
-		case biBirchForestHillsM:
-		case biRoofedForestM:
-		case biColdTaigaM:
-		case biSavannaM:
-		case biSavannaPlateauM:
-		{
-			FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patGrass.Get());
-			return;
-		}
-
-		case biMegaTaiga:
-		case biMegaTaigaHills:
-		case biMegaSpruceTaiga:
-		case biMegaSpruceTaigaHills:
-		{
-			// Select the pattern to use - podzol, grass or grassless dirt:
-			NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + a_RelX)) / FrequencyX;
-			NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + a_RelZ)) / FrequencyZ;
-			NOISE_DATATYPE Val = m_OceanFloorSelect.CubicNoise2D(NoiseX, NoiseY);
-			const sBlockInfo * Pattern = (Val < -0.9) ? patGrassLess.Get() : ((Val > 0) ? patPodzol.Get() : patGrass.Get());
-			FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, Pattern);
-			return;
-		}
-
-		case biDesertHills:
-		case biDesert:
-		case biDesertM:
-		case biBeach:
-		{
-			FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patSand.Get());
-			return;
-		}
-		
-		case biMushroomIsland:
-		case biMushroomShore:
-		{
-			FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patMycelium.Get());
-			return;
-		}
-
-		case biMesa:
-		case biMesaPlateauF:
-		case biMesaPlateau:
-		case biMesaBryce:
-		case biMesaPlateauFM:
-		case biMesaPlateauM:
-		{
-			// Mesa biomes need special handling, because they don't follow the usual "4 blocks from top pattern",
-			// instead, they provide a "from bottom" pattern with varying base height,
-			// usually 4 blocks below the ocean level
-			FillColumnMesa(a_ChunkDesc, a_RelX, a_RelZ);
-			return;
-		}
-
-		case biExtremeHillsPlusM:
-		case biExtremeHillsM:
-		{
-			// Select the pattern to use - gravel, stone or grass:
-			NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + a_RelX)) / FrequencyX;
-			NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + a_RelZ)) / FrequencyZ;
-			NOISE_DATATYPE Val = m_OceanFloorSelect.CubicNoise2D(NoiseX, NoiseY);
-			const sBlockInfo * Pattern = (Val < 0.0) ? patStone.Get() : patGrass.Get();
-			FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, Pattern);
-			return;
-		}
-		default:
-		{
-			ASSERT(!"Unhandled biome");
-			return;
-		}
-	}  // switch (Biome)
-}
-
-
-
-
-
-void cDistortedHeightmap::FillColumnPattern(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ, const sBlockInfo * a_Pattern)
-{
-	int NoiseArrayIdx = a_RelX + 17 * 257 * a_RelZ;
-	bool HasHadWater = false;
-	int PatternIdx = 0;
-	for (int y = a_ChunkDesc.GetHeight(a_RelX, a_RelZ); y > 0; y--)
-	{
-		int HeightMapHeight = (int)m_DistortedHeightmap[NoiseArrayIdx + 17 * y];
-
-		if (y < HeightMapHeight)
-		{
-			// "ground" part, use the pattern:
-			a_ChunkDesc.SetBlockTypeMeta(a_RelX, y, a_RelZ, a_Pattern[PatternIdx].BlockType, a_Pattern[PatternIdx].BlockMeta);
-			PatternIdx++;
-			continue;
-		}
-		
-		// "air" or "water" part:
-		// Reset the pattern index to zero, so that the pattern is repeated from the top again:
-		PatternIdx = 0;
-		
-		if (y >= m_SeaLevel)
-		{
-			// "air" part, do nothing
-			continue;
-		}
-		
-		a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_STATIONARY_WATER);
-		if (HasHadWater)
-		{
-			continue;
-		}
-		
-		// Select the ocean-floor pattern to use:
-		a_Pattern = a_ChunkDesc.GetBiome(a_RelX, a_RelZ) == biDeepOcean ? patGravel.Get() : ChooseOceanFloorPattern(a_RelX, a_RelZ);
-		HasHadWater = true;
-	}  // for y
-	a_ChunkDesc.SetBlockType(a_RelX, 0, a_RelZ, E_BLOCK_BEDROCK);
-}
-
-
-
-
-
-void cDistortedHeightmap::FillColumnMesa(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ)
-{
-	// Frequencies for the clay floor noise:
-	const NOISE_DATATYPE FrequencyX = 50;
-	const NOISE_DATATYPE FrequencyZ = 50;
-
-	int Top = a_ChunkDesc.GetHeight(a_RelX, a_RelZ);
-	if (Top < m_SeaLevel)
-	{
-		// The terrain is below sealevel, handle as regular ocean:
-		FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patOFRedSand.Get());
-		return;
-	}
-
-	NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + a_RelX)) / FrequencyX;
-	NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + a_RelZ)) / FrequencyZ;
-	int ClayFloor = m_SeaLevel - 6 + (int)(4.f * m_MesaFloor.CubicNoise2D(NoiseX, NoiseY));
-	if (ClayFloor >= Top)
-	{
-		ClayFloor = Top - 1;
-	}
-	
-	if (Top - m_SeaLevel < 5)
-	{
-		// Simple case: top is red sand, then hardened clay down to ClayFloor, then stone:
-		a_ChunkDesc.SetBlockTypeMeta(a_RelX, Top, a_RelZ, E_BLOCK_SAND, E_META_SAND_RED);
-		for (int y = Top - 1; y >= ClayFloor; y--)
-		{
-			a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_HARDENED_CLAY);
-		}
-		for (int y = ClayFloor - 1; y > 0; y--)
-		{
-			a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_STONE);
-		}
-		a_ChunkDesc.SetBlockType(a_RelX, 0, a_RelZ, E_BLOCK_BEDROCK);
-		return;
-	}
-	
-	// Difficult case: use the mesa pattern and watch for overhangs:
-	int NoiseArrayIdx = a_RelX + 17 * 257 * a_RelZ;
-	int PatternIdx = cChunkDef::Height - (Top - ClayFloor);  // We want the block at index ClayFloor to be pattern's 256th block (first stone)
-	const sBlockInfo * Pattern = m_MesaPattern;
-	bool HasHadWater = false;
-	for (int y = Top; y > 0; y--)
-	{
-		int HeightMapHeight = (int)m_DistortedHeightmap[NoiseArrayIdx + 17 * y];
-		if (y < HeightMapHeight)
-		{
-			// "ground" part, use the pattern:
-			a_ChunkDesc.SetBlockTypeMeta(a_RelX, y, a_RelZ, Pattern[PatternIdx].BlockType, Pattern[PatternIdx].BlockMeta);
-			PatternIdx++;
-			continue;
-		}
-
-		if (y >= m_SeaLevel)
-		{
-			// "air" part, do nothing
-			continue;
-		}
-		
-		// "water" part, fill with water and choose new pattern for ocean floor, if not chosen already:
-		PatternIdx = 0;
-		a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_STATIONARY_WATER);
-		if (HasHadWater)
-		{
-			continue;
-		}
-		
-		// Select the ocean-floor pattern to use:
-		Pattern = ChooseOceanFloorPattern(a_RelX, a_RelZ);
-		HasHadWater = true;
-	}  // for y
-	a_ChunkDesc.SetBlockType(a_RelX, 0, a_RelZ, E_BLOCK_BEDROCK);
-}
-
-
-
-
-
-const cDistortedHeightmap::sBlockInfo * cDistortedHeightmap::ChooseOceanFloorPattern(int a_RelX, int a_RelZ)
-{
-	// Frequencies for the ocean floor selecting noise:
-	const NOISE_DATATYPE FrequencyX = 3;
-	const NOISE_DATATYPE FrequencyZ = 3;
-
-	// Select the ocean-floor pattern to use:
-	NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + a_RelX)) / FrequencyX;
-	NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + a_RelZ)) / FrequencyZ;
-	NOISE_DATATYPE Val = m_OceanFloorSelect.CubicNoise2D(NoiseX, NoiseY);
-	if (Val < -0.95)
-	{
-		return patOFClay.Get();
-	}
-	else if (Val < 0)
-	{
-		return patOFSand.Get();
-	}
-	else
-	{
-		return patDirt.Get();
-	}
-}
-
-
-
-
diff --git a/src/Generating/DistortedHeightmap.h b/src/Generating/DistortedHeightmap.h
index d073f29e4..79fc35542 100644
--- a/src/Generating/DistortedHeightmap.h
+++ b/src/Generating/DistortedHeightmap.h
@@ -11,7 +11,6 @@
 
 #include "ComposableGenerator.h"
 #include "HeiGen.h"
-#include "../Noise.h"
 
 
 
@@ -24,17 +23,9 @@
 
 
 class cDistortedHeightmap :
-	public cTerrainHeightGen,
-	public cTerrainCompositionGen
+	public cTerrainShapeGen
 {
 public:
-	/// Structure used for storing block patterns for columns
-	struct sBlockInfo
-	{
-		BLOCKTYPE  BlockType;
-		NIBBLETYPE BlockMeta;
-	} ;
-
 	cDistortedHeightmap(int a_Seed, cBiomeGenPtr a_BiomeGen);
 	
 protected:
@@ -52,8 +43,6 @@ protected:
 
 	cPerlinNoise m_NoiseDistortX;
 	cPerlinNoise m_NoiseDistortZ;
-	cNoise       m_OceanFloorSelect;  ///< Used for selecting between dirt and sand on the ocean floor
-	cNoise       m_MesaFloor;         ///< Used for the floor of the clay blocks in mesa biomes
 
 	int m_SeaLevel;
 	NOISE_DATATYPE m_FrequencyX;
@@ -71,9 +60,9 @@ protected:
 	cTerrainHeightGenPtr m_UnderlyingHeiGen;
 
 	/** Cache for m_UnderlyingHeiGen. */
-	cHeiGenCache  m_HeightGen;
+	cHeiGenCache m_HeightGen;
 	
-	/// Heightmap for the current chunk, before distortion (from m_HeightGen). Used for optimization.
+	/** Heightmap for the current chunk, before distortion (from m_HeightGen). Used for optimization. */
 	cChunkDef::HeightMap m_CurChunkHeights;
 	
 	// Per-biome terrain generator parameters:
@@ -88,54 +77,30 @@ protected:
 	NOISE_DATATYPE m_DistortAmpX[DIM_X * DIM_Z];
 	NOISE_DATATYPE m_DistortAmpZ[DIM_X * DIM_Z];
 	
-	/// True if Initialize() has been called. Used to initialize-once even with multiple init entrypoints (HeiGen / CompoGen)
+	/** True if Initialize() has been called. Used to initialize-once even with multiple init entrypoints (HeiGen / CompoGen). */
 	bool m_IsInitialized;
 	
-	/// The vertical pattern to be used for mesa biomes. Seed-dependant.
-	/// One Height of pattern and one Height of stone to avoid checking pattern dimensions
-	sBlockInfo m_MesaPattern[2 * cChunkDef::Height];
-	
 
-	/// Initializes m_MesaPattern with a reasonable pattern of stained clay / hardened clay, based on the seed
-	void InitMesaPattern(int a_Seed);
-	
-	/// Unless the LastChunk coords are equal to coords given, prepares the internal state (noise arrays, heightmap)
+	/** Unless the LastChunk coords are equal to coords given, prepares the internal state (noise arrays, heightmap). */
 	void PrepareState(int a_ChunkX, int a_ChunkZ);
 	
-	/// Generates the m_DistortedHeightmap array for the current chunk
+	/** Generates the m_DistortedHeightmap array for the current chunk. */
 	void GenerateHeightArray(void);
 	
-	/// Calculates the heightmap value (before distortion) at the specified (floating-point) coords
+	/** Calculates the heightmap value (before distortion) at the specified (floating-point) coords. */
 	int GetHeightmapAt(NOISE_DATATYPE a_X, NOISE_DATATYPE a_Z);
 	
-	/// Updates m_DistortAmpX/Z[] based on m_CurChunkX and m_CurChunkZ
+	/** Updates m_DistortAmpX/Z[] based on m_CurChunkX and m_CurChunkZ. */
 	void UpdateDistortAmps(void);
 	
-	/// Calculates the X and Z distortion amplitudes based on the neighbors' biomes
+	/** Calculates the X and Z distortion amplitudes based on the neighbors' biomes. */
 	void GetDistortAmpsAt(BiomeNeighbors & a_Neighbors, int a_RelX, int a_RelZ, NOISE_DATATYPE & a_DistortAmpX, NOISE_DATATYPE & a_DistortAmpZ);
 	
-	/// Reads the settings from the ini file. Skips reading if already initialized
+	/** Reads the settings from the ini file. Skips reading if already initialized. */
 	void Initialize(cIniFile & a_IniFile);
 	
-	/// Composes a single column in a_ChunkDesc. Chooses what to do based on the biome in that column
-	void ComposeColumn(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ);
 	
-	/// Fills the specified column with the specified pattern; restarts the pattern when air is reached,
-	/// switches to ocean floor pattern if ocean is reached. Always adds bedrock at the very bottom.
-	void FillColumnPattern(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ, const sBlockInfo * a_Pattern);
-	
-	/// Fills the specified column with mesa pattern, based on the column height
-	void FillColumnMesa(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ);
-	
-	/// Returns the pattern to use for an ocean floor in the specified column
-	const sBlockInfo * ChooseOceanFloorPattern(int a_RelX, int a_RelZ);
-	
-	
-	// cTerrainHeightGen overrides:
-	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
-	virtual void InitializeHeightGen(cIniFile & a_IniFile) override;
-
-	// cTerrainCompositionGen overrides:
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
-	virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
+	// cTerrainShapeGen overrides:
+	virtual void GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape) override;
+	virtual void InitializeShapeGen(cIniFile & a_IniFile) override;
 } ;
diff --git a/src/Generating/DungeonRoomsFinisher.cpp b/src/Generating/DungeonRoomsFinisher.cpp
index 3f328868d..092e232ab 100644
--- a/src/Generating/DungeonRoomsFinisher.cpp
+++ b/src/Generating/DungeonRoomsFinisher.cpp
@@ -7,6 +7,7 @@
 #include "DungeonRoomsFinisher.h"
 #include "../FastRandom.h"
 #include "../BlockEntities/ChestEntity.h"
+#include "../BlockEntities/MobSpawnerEntity.h"
 
 
 
@@ -57,6 +58,22 @@ public:
 		int SecondChestPos = (FirstChestPos + 2 + (rnd % (NumPositions - 3))) % NumPositions;
 		m_Chest1 = DecodeChestCoords(FirstChestPos,  SizeX, SizeZ);
 		m_Chest2 = DecodeChestCoords(SecondChestPos, SizeX, SizeZ);
+
+		// Choose what the mobspawner will spawn.
+		// 25% chance for a spider, 25% for a skeleton and 50% chance to get a zombie spawer.
+		int MobType = (a_Noise.IntNoise3DInt(a_OriginX, m_FloorHeight, a_OriginZ) / 7) % 100;
+		if (MobType <= 25)
+		{
+			m_MonsterType = mtSkeleton;
+		}
+		else if (MobType <= 50)
+		{
+			m_MonsterType = mtSpider;
+		}
+		else
+		{
+			m_MonsterType = mtZombie;
+		}
 	}
 
 protected:
@@ -76,9 +93,12 @@ protected:
 	/** The (absolute) coords of the second chest. The Y coord represents the chest's Meta value (facing). */
 	Vector3i m_Chest2;
 
+	/** The monster type for the mobspawner entity. */
+	eMonsterType m_MonsterType;
 
 
-	/** Decodes the position index along the room walls into a proper 2D position for a chest. */
+	/** Decodes the position index along the room walls into a proper 2D position for a chest.
+	The Y coord of the returned vector specifies the chest's meta value*/
 	Vector3i DecodeChestCoords(int a_PosIdx, int a_SizeX, int a_SizeZ)
 	{
 		if (a_PosIdx < a_SizeX)
@@ -245,7 +265,9 @@ protected:
 		)
 		{
 			a_ChunkDesc.SetBlockTypeMeta(CenterX, b, CenterZ, E_BLOCK_MOB_SPAWNER, 0);
-			// TODO: Set the spawned mob
+			cMobSpawnerEntity * MobSpawner = static_cast<cMobSpawnerEntity *>(a_ChunkDesc.GetBlockEntity(CenterX, b, CenterZ));
+			ASSERT((MobSpawner != nullptr) && (MobSpawner->GetBlockType() == E_BLOCK_MOB_SPAWNER));
+			MobSpawner->SetEntity(m_MonsterType);
 		}
 	}
 } ;
@@ -258,9 +280,9 @@ protected:
 ////////////////////////////////////////////////////////////////////////////////
 // cDungeonRoomsFinisher:
 
-cDungeonRoomsFinisher::cDungeonRoomsFinisher(cTerrainHeightGenPtr a_HeightGen, int a_Seed, int a_GridSize, int a_MaxSize, int a_MinSize, const AString & a_HeightDistrib) :
+cDungeonRoomsFinisher::cDungeonRoomsFinisher(cTerrainShapeGenPtr a_ShapeGen, int a_Seed, int a_GridSize, int a_MaxSize, int a_MinSize, const AString & a_HeightDistrib) :
 	super(a_Seed + 100, a_GridSize, a_GridSize, a_GridSize, a_GridSize, a_MaxSize, a_MaxSize, 1024),
-	m_HeightGen(a_HeightGen),
+	m_ShapeGen(a_ShapeGen),
 	m_MaxHalfSize((a_MaxSize + 1) / 2),
 	m_MinHalfSize((a_MinSize + 1) / 2),
 	m_HeightProbability(cChunkDef::Height)
@@ -293,13 +315,21 @@ cDungeonRoomsFinisher::cStructurePtr cDungeonRoomsFinisher::CreateStructure(int
 	int ChunkX, ChunkZ;
 	int RelX = a_OriginX, RelY = 0, RelZ = a_OriginZ;
 	cChunkDef::AbsoluteToRelative(RelX, RelY, RelZ, ChunkX, ChunkZ);
-	cChunkDef::HeightMap HeightMap;
-	m_HeightGen->GenHeightMap(ChunkX, ChunkZ, HeightMap);
-	int Height = cChunkDef::GetHeight(HeightMap, RelX, RelZ);  // Max room height at {a_OriginX, a_OriginZ}
-	Height = Clamp(m_HeightProbability.MapValue(rnd % m_HeightProbability.GetSum()), 10, Height - 5);
+	cChunkDesc::Shape shape;
+	m_ShapeGen->GenShape(ChunkX, ChunkZ, shape);
+	int height = 0;
+	int idx = RelX * 256 + RelZ * 16 * 256;
+	for (int y = 6; y < cChunkDef::Height; y++)
+	{
+		if (shape[idx + y] != 0)
+		{
+			continue;
+		}
+		height = Clamp(m_HeightProbability.MapValue(rnd % m_HeightProbability.GetSum()), 10, y - 5);
+	}
 
 	// Create the dungeon room descriptor:
-	return cStructurePtr(new cDungeonRoom(a_GridX, a_GridZ, a_OriginX, a_OriginZ, HalfSizeX, HalfSizeZ, Height, m_Noise));
+	return cStructurePtr(new cDungeonRoom(a_GridX, a_GridZ, a_OriginX, a_OriginZ, HalfSizeX, HalfSizeZ, height, m_Noise));
 }
 
 
diff --git a/src/Generating/DungeonRoomsFinisher.h b/src/Generating/DungeonRoomsFinisher.h
index 09dd0448a..e5828f989 100644
--- a/src/Generating/DungeonRoomsFinisher.h
+++ b/src/Generating/DungeonRoomsFinisher.h
@@ -23,15 +23,15 @@ class cDungeonRoomsFinisher :
 
 public:
 	/** Creates a new dungeon room finisher.
-	a_HeightGen is the underlying height generator, so that the rooms can always be placed under the terrain.
+	a_ShapeGen is the underlying terrain shape generator, so that the rooms can always be placed under the terrain.
 	a_MaxSize and a_MinSize are the maximum and minimum sizes of the room's internal (air) area, in blocks across.
 	a_HeightDistrib is the string defining the height distribution for the rooms (cProbabDistrib format). */
-	cDungeonRoomsFinisher(cTerrainHeightGenPtr a_HeightGen, int a_Seed, int a_GridSize, int a_MaxSize, int a_MinSize, const AString & a_HeightDistrib);
+	cDungeonRoomsFinisher(cTerrainShapeGenPtr a_ShapeGen, int a_Seed, int a_GridSize, int a_MaxSize, int a_MinSize, const AString & a_HeightDistrib);
 
 protected:
 
-	/** The height gen that is used for limiting the rooms' Y coords */
-	cTerrainHeightGenPtr m_HeightGen;
+	/** The shape gen that is used for limiting the rooms' Y coords */
+	cTerrainShapeGenPtr m_ShapeGen;
 
 	/** Maximum half-size (from center to wall) of the dungeon room's inner (air) area. Default is 3 (vanilla). */
 	int m_MaxHalfSize;
diff --git a/src/Generating/EndGen.cpp b/src/Generating/EndGen.cpp
index 0111d2fa3..89d6117bb 100644
--- a/src/Generating/EndGen.cpp
+++ b/src/Generating/EndGen.cpp
@@ -147,13 +147,14 @@ bool cEndGen::IsChunkOutsideRange(int a_ChunkX, int a_ChunkZ)
 
 
 
-void cEndGen::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap)
+void cEndGen::GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape)
 {
+	// If the chunk is outside out range, fill the shape with zeroes:
 	if (IsChunkOutsideRange(a_ChunkX, a_ChunkZ))
 	{
-		for (size_t i = 0; i < ARRAYCOUNT(a_HeightMap); i++)
+		for (size_t i = 0; i < ARRAYCOUNT(a_Shape); i++)
 		{
-			a_HeightMap[i] = 0;
+			a_Shape[i] = 0;
 		}
 		return;
 	}
@@ -165,15 +166,14 @@ void cEndGen::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_
 	{
 		for (int x = 0; x < cChunkDef::Width; x++)
 		{
-			cChunkDef::SetHeight(a_HeightMap, x, z, MaxY);
-			for (int y = MaxY; y > 0; y--)
+			for (int y = 0; y < MaxY; y++)
 			{
-				if (m_NoiseArray[y * 17 * 17 + z * 17 + x] <= 0)
-				{
-					cChunkDef::SetHeight(a_HeightMap, x, z, y);
-					break;
-				}
-			}  // for y
+				a_Shape[(x + 16 * z) * 256 + y] = (m_NoiseArray[y * 17 * 17 + z * 17 + z] > 0) ? 1 : 0;
+			}
+			for (int y = MaxY; y < cChunkDef::Height; y++)
+			{
+				a_Shape[(x + 16 * z) * 256 + y] = 0;
+			}
 		}  // for x
 	}  // for z
 }
@@ -182,30 +182,18 @@ void cEndGen::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_
 
 
 
-void cEndGen::ComposeTerrain(cChunkDesc & a_ChunkDesc)
+void cEndGen::ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape)
 {
-	if (IsChunkOutsideRange(a_ChunkDesc.GetChunkX(), a_ChunkDesc.GetChunkZ()))
-	{
-		a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
-		return;
-	}
-
-	PrepareState(a_ChunkDesc.GetChunkX(), a_ChunkDesc.GetChunkZ());
-
-	int MaxY = std::min((int)(1.75 * m_IslandSizeY + 1), cChunkDef::Height - 1);
+	a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
 	for (int z = 0; z < cChunkDef::Width; z++)
 	{
 		for (int x = 0; x < cChunkDef::Width; x++)
 		{
-			for (int y = MaxY; y > 0; y--)
+			for (int y = 0; y < cChunkDef::Height; y++)
 			{
-				if (m_NoiseArray[y * 17 * 17 + z * 17 + x] <= 0)
-				{
-					a_ChunkDesc.SetBlockTypeMeta(x, y, z, E_BLOCK_END_STONE, 0);
-				}
-				else
+				if (a_Shape[(x + 16 * z) * 256 + y] != 0)
 				{
-					a_ChunkDesc.SetBlockTypeMeta(x, y, z, E_BLOCK_AIR, 0);
+					a_ChunkDesc.SetBlockType(x, y, z, E_BLOCK_END_STONE);
 				}
 			}  // for y
 		}  // for x
diff --git a/src/Generating/EndGen.h b/src/Generating/EndGen.h
index 322061810..f9e3f6e53 100644
--- a/src/Generating/EndGen.h
+++ b/src/Generating/EndGen.h
@@ -10,14 +10,14 @@
 #pragma once
 
 #include "ComposableGenerator.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
 
 
 
 
 
 class cEndGen :
-	public cTerrainHeightGen,
+	public cTerrainShapeGen,
 	public cTerrainCompositionGen
 {
 public:
@@ -59,10 +59,10 @@ protected:
 	/// Returns true if the chunk is outside of the island's dimensions
 	bool IsChunkOutsideRange(int a_ChunkX, int a_ChunkZ);
 		
-	// cTerrainHeightGen overrides:
-	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
+	// cTerrainShapeGen overrides:
+	virtual void GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape) override;
 
 	// cTerrainCompositionGen overrides:
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
 	virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
 } ;
diff --git a/src/Generating/FinishGen.cpp b/src/Generating/FinishGen.cpp
index 18f8ee2bc..e10cb00f8 100644
--- a/src/Generating/FinishGen.cpp
+++ b/src/Generating/FinishGen.cpp
@@ -10,7 +10,6 @@
 #include "Globals.h"
 
 #include "FinishGen.h"
-#include "../Noise.h"
 #include "../BlockID.h"
 #include "../Simulator/FluidSimulator.h"  // for cFluidSimulator::CanWashAway()
 #include "../Simulator/FireSimulator.h"
@@ -27,6 +26,8 @@
 #define DEF_OVERWORLD_LAVA_SPRINGS  "0, 0; 10, 5; 11, 45; 48, 2; 64, 1; 255, 0"
 #define DEF_END_WATER_SPRINGS       "0, 1; 255, 1"
 #define DEF_END_LAVA_SPRINGS        "0, 1; 255, 1"
+#define DEF_ANIMAL_SPAWN_PERCENT    10
+#define DEF_NO_ANIMALS              0
 
 
 
@@ -66,7 +67,7 @@ void cFinishGenNetherClumpFoliage::GenFinish(cChunkDesc & a_ChunkDesc)
 		{
 			continue;
 		}
-		
+
 		// Choose what block to use.
 		NOISE_DATATYPE BlockType = m_Noise.IntNoise3D((int) ChunkX, y, (int) ChunkZ);
 		if (BlockType < -0.7)
@@ -196,10 +197,15 @@ void cFinishGenTallGrass::GenFinish(cChunkDesc & a_ChunkDesc)
 			{
 				continue;
 			}
-			
+
 			// Get the top block + 1. This is the place where the grass would finaly be placed:
 			int y = a_ChunkDesc.GetHeight(x, z) + 1;
 
+			if (y >= 255)
+			{
+				continue;
+			}
+
 			// Check if long grass can be placed:
 			if (
 				(a_ChunkDesc.GetBlockType(x, y, z) != E_BLOCK_AIR) ||
@@ -277,7 +283,7 @@ bool cFinishGenSprinkleFoliage::TryAddSugarcane(cChunkDesc & a_ChunkDesc, int a_
 	{
 		return false;
 	}
-	
+
 	// All conditions met, place a sugarcane here:
 	a_ChunkDesc.SetBlockType(a_RelX, a_RelY + 1, a_RelZ, E_BLOCK_SUGARCANE);
 	return true;
@@ -290,7 +296,7 @@ bool cFinishGenSprinkleFoliage::TryAddSugarcane(cChunkDesc & a_ChunkDesc, int a_
 void cFinishGenSprinkleFoliage::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	// Generate small foliage (1-block):
-	
+
 	// TODO: Update heightmap with 1-block-tall foliage
 	for (int z = 0; z < cChunkDef::Width; z++)
 	{
@@ -315,7 +321,7 @@ void cFinishGenSprinkleFoliage::GenFinish(cChunkDesc & a_ChunkDesc)
 				// WEIRD, since we're using heightmap, so there should NOT be anything above it
 				continue;
 			}
-			
+
 			const float xx = (float)BlockX;
 			float val1 = m_Noise.CubicNoise2D(xx * 0.1f,  zz * 0.1f);
 			float val2 = m_Noise.CubicNoise2D(xx * 0.01f, zz * 0.01f);
@@ -355,7 +361,7 @@ void cFinishGenSprinkleFoliage::GenFinish(cChunkDesc & a_ChunkDesc)
 					}
 					break;
 				}  // case E_BLOCK_GRASS
-				
+
 				case E_BLOCK_SAND:
 				{
 					int y = Top + 1;
@@ -366,7 +372,8 @@ void cFinishGenSprinkleFoliage::GenFinish(cChunkDesc & a_ChunkDesc)
 						(a_ChunkDesc.GetBlockType(x + 1, y, z)     == E_BLOCK_AIR) &&
 						(a_ChunkDesc.GetBlockType(x - 1, y, z)     == E_BLOCK_AIR) &&
 						(a_ChunkDesc.GetBlockType(x,     y, z + 1) == E_BLOCK_AIR) &&
-						(a_ChunkDesc.GetBlockType(x,     y, z - 1) == E_BLOCK_AIR)
+						(a_ChunkDesc.GetBlockType(x,     y, z - 1) == E_BLOCK_AIR) &&
+						IsDesertVariant(a_ChunkDesc.GetBiome(x, z))
 					)
 					{
 						a_ChunkDesc.SetBlockType(x, ++Top, z, E_BLOCK_CACTUS);
@@ -387,6 +394,72 @@ void cFinishGenSprinkleFoliage::GenFinish(cChunkDesc & a_ChunkDesc)
 
 
 
+bool cFinishGenSprinkleFoliage::IsDesertVariant(EMCSBiome a_Biome)
+{
+	return
+	(
+		(a_Biome == biDesertHills) ||
+		(a_Biome == biDesert) ||
+		(a_Biome == biDesertM)
+	);
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cFinishGenSoulsandRims
+
+void cFinishGenSoulsandRims::GenFinish(cChunkDesc & a_ChunkDesc)
+{
+	int ChunkX = a_ChunkDesc.GetChunkX() * cChunkDef::Width;
+	int ChunkZ = a_ChunkDesc.GetChunkZ() * cChunkDef::Width;
+	HEIGHTTYPE MaxHeight = a_ChunkDesc.GetMaxHeight();
+
+	for (int x = 0; x < 16; x++)
+	{
+		int xx = ChunkX + x;
+		for (int z = 0; z < 16; z++)
+		{
+			int zz = ChunkZ + z;
+
+			// Place soulsand rims when netherrack gets thin
+			for (int y = 2; y < MaxHeight - 2; y++)
+			{
+				// The current block is air. Let's bail ut.
+				BLOCKTYPE Block = a_ChunkDesc.GetBlockType(x, y, z);
+				if (Block == E_BLOCK_AIR)
+				{
+					continue;
+				}
+
+				if (
+					((a_ChunkDesc.GetBlockType(x, y + 1, z) != E_BLOCK_AIR) &&
+					( a_ChunkDesc.GetBlockType(x, y + 2, z) != E_BLOCK_AIR)) ||
+					((a_ChunkDesc.GetBlockType(x, y - 1, z) != E_BLOCK_AIR) &&
+					( a_ChunkDesc.GetBlockType(x, y - 2, z) != E_BLOCK_AIR))
+				)
+				{
+					continue;
+				}
+
+				NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(xx)) / 32;
+				NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(zz)) / 32;
+				NOISE_DATATYPE CompBlock = m_Noise.CubicNoise3D(NoiseX, (float) (y) / 4, NoiseY);
+				if (CompBlock < 0)
+				{
+					a_ChunkDesc.SetBlockType(x, y, z, E_BLOCK_SOULSAND);
+				}
+			}
+		}
+	}
+}
+
+
+
+
+
 ////////////////////////////////////////////////////////////////////////////////
 // cFinishGenSnow:
 
@@ -407,7 +480,7 @@ void cFinishGenSnow::GenFinish(cChunkDesc & a_ChunkDesc)
 				case biFrozenOcean:
 				{
 					int Height = a_ChunkDesc.GetHeight(x, z);
-					if (cBlockInfo::IsSnowable(a_ChunkDesc.GetBlockType(x, Height, z)))
+					if (cBlockInfo::IsSnowable(a_ChunkDesc.GetBlockType(x, Height, z)) && (Height < cChunkDef::Height - 1))
 					{
 						a_ChunkDesc.SetBlockType(x, Height + 1, z, E_BLOCK_SNOW);
 						a_ChunkDesc.SetHeight(x, z, Height + 1);
@@ -512,7 +585,7 @@ void cFinishGenSingleTopBlock::GenFinish(cChunkDesc & a_ChunkDesc)
 		}
 
 		int Height = a_ChunkDesc.GetHeight(x, z);
-		if (Height >= cChunkDef::Height)
+		if (Height >= cChunkDef::Height - 1)
 		{
 			// Too high up
 			continue;
@@ -712,7 +785,7 @@ void cFinishGenPreSimulator::StationarizeFluid(
 			}  // for y
 		}  // for x
 	}  // for z
-	
+
 	// Turn fluid at the chunk edges into non-stationary fluid:
 	for (int y = 0; y < cChunkDef::Height; y++)
 	{
@@ -804,12 +877,12 @@ void cFinishGenFluidSprings::GenFinish(cChunkDesc & a_ChunkDesc)
 		// Not in this chunk
 		return;
 	}
-	
+
 	// Get the height at which to try:
 	int Height = m_Noise.IntNoise3DInt(128 * a_ChunkDesc.GetChunkX(), 1024, 256 * a_ChunkDesc.GetChunkZ()) / 11;
 	Height %= m_HeightDistribution.GetSum();
 	Height = m_HeightDistribution.MapValue(Height);
-	
+
 	// Try adding the spring at the height, if unsuccessful, move lower:
 	for (int y = Height; y > 1; y--)
 	{
@@ -847,7 +920,7 @@ bool cFinishGenFluidSprings::TryPlaceSpring(cChunkDesc & a_ChunkDesc, int x, int
 	{
 		return false;
 	}
-	
+
 	static const struct
 	{
 		int x, y, z;
@@ -878,7 +951,7 @@ bool cFinishGenFluidSprings::TryPlaceSpring(cChunkDesc & a_ChunkDesc, int x, int
 	{
 		return false;
 	}
-	
+
 	// Has exactly one air neighbor, place a spring:
 	a_ChunkDesc.SetBlockTypeMeta(x, y, z, m_Fluid, 0);
 	return true;
@@ -887,3 +960,236 @@ bool cFinishGenFluidSprings::TryPlaceSpring(cChunkDesc & a_ChunkDesc, int x, int
 
 
 
+
+////////////////////////////////////////////////////////////////////////////////
+// cFinishGenPassiveMobs:
+
+cFinishGenPassiveMobs::cFinishGenPassiveMobs(int a_Seed, cIniFile & a_IniFile, eDimension a_Dimension) :
+	m_Noise(a_Seed)
+{
+	AString SectionName = "Animals";
+	int DefaultAnimalSpawnChunkPercentage = DEF_ANIMAL_SPAWN_PERCENT;
+	switch (a_Dimension)
+	{
+		case dimOverworld:
+		{
+			DefaultAnimalSpawnChunkPercentage = DEF_ANIMAL_SPAWN_PERCENT;
+			break;
+		}
+		case dimNether:
+		case dimEnd:  // No nether or end animals (currently)
+		{
+			DefaultAnimalSpawnChunkPercentage = DEF_NO_ANIMALS;
+			break;
+		}
+		default:
+		{
+			ASSERT(!"Unhandled world dimension");
+			DefaultAnimalSpawnChunkPercentage = DEF_NO_ANIMALS;
+			break;
+		}
+	}  // switch (dimension)
+	m_AnimalProbability = a_IniFile.GetValueSetI(SectionName, "AnimalSpawnChunkPercentage", DefaultAnimalSpawnChunkPercentage);
+	if ((m_AnimalProbability < 0) || (m_AnimalProbability > 100))
+	{
+		LOGWARNING("[Animals]: AnimalSpawnChunkPercentage is invalid, using the default of \"%d\".", DefaultAnimalSpawnChunkPercentage);
+		m_AnimalProbability = DefaultAnimalSpawnChunkPercentage;
+	}
+}
+
+
+
+
+
+void cFinishGenPassiveMobs::GenFinish(cChunkDesc & a_ChunkDesc)
+{
+	int chunkX = a_ChunkDesc.GetChunkX();
+	int chunkZ = a_ChunkDesc.GetChunkZ();
+	int ChanceRnd = (m_Noise.IntNoise2DInt(chunkX, chunkZ) / 7) % 100;
+	if (ChanceRnd > m_AnimalProbability)
+	{
+		return;
+	}
+
+	eMonsterType RandomMob = GetRandomMob(a_ChunkDesc);
+	if (RandomMob == mtInvalidType)
+	{
+		// No mobs here. Don't send an error, because if the biome was a desert it would return mtInvalidType as well.
+		return;
+	}
+
+	// Try spawning a pack center 10 times, should get roughly the same probability
+	for (int Tries = 0; Tries < 10; Tries++)
+	{
+		int PackCenterX = (m_Noise.IntNoise2DInt(chunkX + chunkZ, Tries) / 7) % cChunkDef::Width;
+		int PackCenterZ = (m_Noise.IntNoise2DInt(chunkX, chunkZ + Tries) / 7) % cChunkDef::Width;
+		if (TrySpawnAnimals(a_ChunkDesc, PackCenterX, a_ChunkDesc.GetHeight(PackCenterX, PackCenterZ), PackCenterZ, RandomMob))
+		{
+			for (int i = 0; i < 3; i++)
+			{
+				int OffsetX = (m_Noise.IntNoise2DInt(chunkX + chunkZ + i, Tries) / 7) % cChunkDef::Width;
+				int OffsetZ = (m_Noise.IntNoise2DInt(chunkX, chunkZ + Tries + i) / 7) % cChunkDef::Width;
+				TrySpawnAnimals(a_ChunkDesc, OffsetX, a_ChunkDesc.GetHeight(OffsetX, OffsetZ), OffsetZ, RandomMob);
+			}
+			return;
+
+		}  // if pack center spawn successful
+	}  // for tries
+}
+
+
+
+
+
+bool cFinishGenPassiveMobs::TrySpawnAnimals(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelY, int a_RelZ, eMonsterType AnimalToSpawn)
+{
+	if ((a_RelY >= cChunkDef::Height - 1) || (a_RelY <= 0))
+	{
+		return false;
+	}
+
+	BLOCKTYPE BlockAtHead    = a_ChunkDesc.GetBlockType(a_RelX, a_RelY + 1, a_RelZ);
+	BLOCKTYPE BlockAtFeet    = a_ChunkDesc.GetBlockType(a_RelX, a_RelY, a_RelZ);
+	BLOCKTYPE BlockUnderFeet = a_ChunkDesc.GetBlockType(a_RelX, a_RelY - 1, a_RelZ);
+
+	// Check block below (opaque, grass, water), and above (air)
+	if ((AnimalToSpawn == mtSquid) && (BlockAtFeet != E_BLOCK_WATER))
+	{
+		return false;
+	}
+	if (
+		(AnimalToSpawn != mtSquid) &&
+		(BlockAtHead != E_BLOCK_AIR) &&
+		(BlockAtFeet != E_BLOCK_AIR) &&
+		(!cBlockInfo::IsTransparent(BlockUnderFeet))
+	)
+	{
+		return false;
+	}
+	if (
+		(BlockUnderFeet != E_BLOCK_GRASS) &&
+		((AnimalToSpawn == mtSheep) || (AnimalToSpawn == mtChicken) || (AnimalToSpawn == mtPig))
+	)
+	{
+		return false;
+	}
+	if ((AnimalToSpawn == mtMooshroom) && (BlockUnderFeet != E_BLOCK_MYCELIUM))
+	{
+		return false;
+	}
+
+	double AnimalX = static_cast<double>(a_ChunkDesc.GetChunkX() * cChunkDef::Width + a_RelX + 0.5);
+	double AnimalY = a_RelY;
+	double AnimalZ = static_cast<double>(a_ChunkDesc.GetChunkZ() * cChunkDef::Width + a_RelZ + 0.5);
+
+	cMonster * NewMob = cMonster::NewMonsterFromType(AnimalToSpawn);
+	NewMob->SetPosition(AnimalX, AnimalY, AnimalZ);
+	a_ChunkDesc.GetEntities().push_back(NewMob);
+	LOGD("Spawning %s #%i at {%.02f, %.02f, %.02f}", NewMob->GetClass(), NewMob->GetUniqueID(), AnimalX, AnimalY, AnimalZ);
+
+	return true;
+}
+
+
+
+
+
+eMonsterType cFinishGenPassiveMobs::GetRandomMob(cChunkDesc & a_ChunkDesc)
+{
+
+	std::set<eMonsterType> ListOfSpawnables;
+	int chunkX = a_ChunkDesc.GetChunkX();
+	int chunkZ = a_ChunkDesc.GetChunkZ();
+	int x = (m_Noise.IntNoise2DInt(chunkX, chunkZ + 10) / 7) % cChunkDef::Width;
+	int z = (m_Noise.IntNoise2DInt(chunkX + chunkZ, chunkZ) / 7) % cChunkDef::Width;
+
+	// Check biomes first to get a list of animals
+	switch (a_ChunkDesc.GetBiome(x, z))
+	{
+		// No animals in deserts or non-overworld dimensions
+		case biNether:
+		case biEnd:
+		case biDesertHills:
+		case biDesert:
+		case biDesertM:
+		{
+			return mtInvalidType;
+		}
+
+		// Mooshroom only - no other mobs on mushroom islands
+		case biMushroomIsland:
+		case biMushroomShore:
+		{
+			return mtMooshroom;
+		}
+
+		// Add squid in ocean biomes
+		case biOcean:
+		case biFrozenOcean:
+		case biFrozenRiver:
+		case biRiver:
+		case biDeepOcean:
+		{
+			ListOfSpawnables.insert(mtSquid);
+			break;
+		}
+
+		// Add ocelots in jungle biomes
+		case biJungle:
+		case biJungleHills:
+		case biJungleEdge:
+		case biJungleM:
+		case biJungleEdgeM:
+		{
+			ListOfSpawnables.insert(mtOcelot);
+			break;
+		}
+
+		// Add horses in plains-like biomes
+		case biPlains:
+		case biSunflowerPlains:
+		case biSavanna:
+		case biSavannaPlateau:
+		case biSavannaM:
+		case biSavannaPlateauM:
+		{
+			ListOfSpawnables.insert(mtHorse);
+			break;
+		}
+
+		// Add wolves in forest and spruce forests
+		case biForest:
+		case biTaiga:
+		case biMegaTaiga:
+		case biColdTaiga:
+		case biColdTaigaM:
+		{
+			ListOfSpawnables.insert(mtWolf);
+			break;
+		}
+		// Nothing special about this biome
+		default:
+		{
+			break;
+		}
+	}
+	ListOfSpawnables.insert(mtChicken);
+	ListOfSpawnables.insert(mtCow);
+	ListOfSpawnables.insert(mtPig);
+	ListOfSpawnables.insert(mtSheep);
+
+	if (ListOfSpawnables.empty())
+	{
+		return mtInvalidType;
+	}
+
+	int RandMob = (m_Noise.IntNoise2DInt(chunkX - chunkZ + 2, chunkX + 5) / 7) % ListOfSpawnables.size();
+	auto MobIter = ListOfSpawnables.begin();
+	std::advance(MobIter, RandMob);
+
+	return *MobIter;
+}
+
+
+
+
diff --git a/src/Generating/FinishGen.h b/src/Generating/FinishGen.h
index 4a08d70c8..ae6dee590 100644
--- a/src/Generating/FinishGen.h
+++ b/src/Generating/FinishGen.h
@@ -16,8 +16,9 @@
 
 
 #include "ComposableGenerator.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
 #include "../ProbabDistrib.h"
+#include "../Mobs/Monster.h"
 
 
 
@@ -117,19 +118,41 @@ protected:
 
 
 
+class cFinishGenSoulsandRims :
+	public cFinishGen
+{
+public:
+	cFinishGenSoulsandRims(int a_Seed) :
+		m_Noise(a_Seed)
+	{
+	}
+
+protected:
+	cNoise m_Noise;
+
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
+} ;
+
+
+
+
+
 class cFinishGenSprinkleFoliage :
 	public cFinishGen
 {
 public:
 	cFinishGenSprinkleFoliage(int a_Seed) : m_Noise(a_Seed), m_Seed(a_Seed) {}
-	
+
 protected:
 	cNoise m_Noise;
 	int    m_Seed;
-	
+
 	/// Tries to place sugarcane at the coords specified, returns true if successful
 	bool TryAddSugarcane(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelY, int a_RelZ);
-	
+
+	// Returns true is the specified biome is a desert or its variant
+	static bool IsDesertVariant(EMCSBiome a_biome);
+
 	// cFinishGen override:
 	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
@@ -167,31 +190,31 @@ public:
 		{
 			m_IsAllowedBelow[idx] = false;
 		}
-		
+
 		// Load the allowed blocks into m_IsAllowedBelow
 		for (BlockList::iterator itr = a_AllowedBelow.begin(); itr != a_AllowedBelow.end(); ++itr)
 		{
 			m_IsAllowedBelow[*itr] = true;
 		}
-		
+
 		// Initialize all the biome types.
 		for (size_t idx = 0; idx < ARRAYCOUNT(m_IsBiomeAllowed); ++idx)
 		{
 			m_IsBiomeAllowed[idx] = false;
 		}
-		
+
 		// Load the allowed biomes into m_IsBiomeAllowed
 		for (BiomeList::iterator itr = a_Biomes.begin(); itr != a_Biomes.end(); ++itr)
 		{
 			m_IsBiomeAllowed[*itr] = true;
 		}
 	}
-	
+
 protected:
 	cNoise m_Noise;
 	BLOCKTYPE m_BlockType;
 	int       m_Amount;         ///< Relative amount of blocks to try adding. 1 = one block per 256 biome columns.
-	
+
 	int GetNumToGen(const cChunkDef::BiomeMap & a_BiomeMap);
 
 	// Returns true if the given biome is a biome that is allowed.
@@ -206,7 +229,7 @@ protected:
 		return m_IsAllowedBelow[a_BlockBelow];
 	}
 
-	
+
 	// cFinishGen override:
 	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
@@ -223,11 +246,11 @@ public:
 		m_Level(a_Level)
 	{
 	}
-	
+
 	int GetLevel(void) const { return m_Level; }
 protected:
 	int m_Level;
-	
+
 	// cFinishGen override:
 	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
@@ -241,7 +264,7 @@ class cFinishGenPreSimulator :
 {
 public:
 	cFinishGenPreSimulator(bool a_PreSimulateFallingBlocks, bool a_PreSimulateWater, bool a_PreSimulateLava);
-	
+
 protected:
 
 	bool m_PreSimulateFallingBlocks;
@@ -253,7 +276,7 @@ protected:
 		cChunkDef::BlockTypes & a_BlockTypes,    // Block types to read and change
 		cChunkDef::HeightMap & a_HeightMap       // Height map to update by the current data
 	);
-	
+
 	/** For each fluid block:
 	- if all surroundings are of the same fluid, makes it stationary; otherwise makes it flowing (excl. top)
 	- all fluid on the chunk's edge is made flowing
@@ -278,7 +301,7 @@ class cFinishGenFluidSprings :
 {
 public:
 	cFinishGenFluidSprings(int a_Seed, BLOCKTYPE a_Fluid, cIniFile & a_IniFile, eDimension a_Dimension);
-	
+
 protected:
 
 	cNoise         m_Noise;
@@ -289,10 +312,43 @@ protected:
 	// cFinishGen override:
 	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 
-	/// Tries to place a spring at the specified coords, checks neighbors. Returns true if successful
+	/** Tries to place a spring at the specified coords, checks neighbors. Returns true if successful. */
 	bool TryPlaceSpring(cChunkDesc & a_ChunkDesc, int x, int y, int z);
 } ;
 
 
 
 
+
+/** This class populates generated chunks with packs of biome-dependant animals
+Animals: cows, sheep, pigs, mooshrooms, squid, horses, wolves, ocelots */
+class cFinishGenPassiveMobs :
+	public cFinishGen
+{
+public:
+	
+	cFinishGenPassiveMobs(int a_Seed, cIniFile & a_IniFile, eDimension a_Dimension);
+
+protected:
+
+	/** The noise used as the source of randomness */
+	cNoise m_Noise;
+
+	/** Chance, [0..100], that an animal pack will be generated in a chunk */
+	int m_AnimalProbability;
+
+
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
+
+	/** Returns false if an animal cannot spawn at given coords, else adds it to the chunk's entity list and returns true */
+	bool TrySpawnAnimals(cChunkDesc & a_ChunkDesc, int x, int y, int z, eMonsterType AnimalToSpawn);
+
+	/** Picks a random animal from biome-dependant list for a random position in the chunk.
+	Returns the chosen mob type, or mtInvalid if no mob chosen. */
+	eMonsterType GetRandomMob(cChunkDesc & a_ChunkDesc);
+} ;
+
+
+
+
diff --git a/src/Generating/GridStructGen.h b/src/Generating/GridStructGen.h
index 03131fce9..b92fb2e9d 100644
--- a/src/Generating/GridStructGen.h
+++ b/src/Generating/GridStructGen.h
@@ -10,7 +10,7 @@
 #pragma once
 
 #include "ComposableGenerator.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
 
 
 
diff --git a/src/Generating/HeiGen.cpp b/src/Generating/HeiGen.cpp
index 28a5698e4..61d087c17 100644
--- a/src/Generating/HeiGen.cpp
+++ b/src/Generating/HeiGen.cpp
@@ -15,7 +15,6 @@
 
 
 
-
 ////////////////////////////////////////////////////////////////////////////////
 // cHeiGenFlat:
 
@@ -133,15 +132,6 @@ void cHeiGenCache::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap
 
 
 
-void cHeiGenCache::InitializeHeightGen(cIniFile & a_IniFile)
-{
-	m_HeiGenToCache->InitializeHeightGen(a_IniFile);
-}
-
-
-
-
-
 bool cHeiGenCache::GetHeightAt(int a_ChunkX, int a_ChunkZ, int a_RelX, int a_RelZ, HEIGHTTYPE & a_Height)
 {
 	for (int i = 0; i < m_CacheSize; i++)
@@ -160,6 +150,51 @@ bool cHeiGenCache::GetHeightAt(int a_ChunkX, int a_ChunkZ, int a_RelX, int a_Rel
 
 
 ////////////////////////////////////////////////////////////////////////////////
+// cHeiGenMultiCache:
+
+cHeiGenMultiCache::cHeiGenMultiCache(cTerrainHeightGenPtr a_HeiGenToCache, size_t a_SubCacheSize, size_t a_NumSubCaches):
+	m_NumSubCaches(a_NumSubCaches)
+{
+	// Create the individual sub-caches:
+	m_SubCaches.reserve(a_NumSubCaches);
+	for (size_t i = 0; i < a_NumSubCaches; i++)
+	{
+		m_SubCaches.push_back(std::make_shared<cHeiGenCache>(a_HeiGenToCache, a_SubCacheSize));
+	}
+}
+
+
+
+
+
+void cHeiGenMultiCache::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap)
+{
+	// Get the subcache responsible for this chunk:
+	const size_t cacheIdx = ((size_t)a_ChunkX + m_CoeffZ * (size_t)a_ChunkZ) % m_NumSubCaches;
+
+	// Ask the subcache:
+	m_SubCaches[cacheIdx]->GenHeightMap(a_ChunkX, a_ChunkZ, a_HeightMap);
+}
+
+
+
+
+
+bool cHeiGenMultiCache::GetHeightAt(int a_ChunkX, int a_ChunkZ, int a_RelX, int a_RelZ, HEIGHTTYPE & a_Height)
+{
+	// Get the subcache responsible for this chunk:
+	const size_t cacheIdx = ((size_t)a_ChunkX + m_CoeffZ * (size_t)a_ChunkZ) % m_NumSubCaches;
+
+	// Ask the subcache:
+	return m_SubCaches[cacheIdx]->GetHeightAt(a_ChunkX, a_ChunkZ, a_RelX, a_RelZ, a_Height);
+}
+
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
 // cHeiGenClassic:
 
 cHeiGenClassic::cHeiGenClassic(int a_Seed) :
@@ -750,39 +785,51 @@ cTerrainHeightGenPtr cTerrainHeightGen::CreateHeightGen(cIniFile & a_IniFile, cB
 	}
 	
 	a_CacheOffByDefault = false;
-	cTerrainHeightGen * res = nullptr;
-	if (NoCaseCompare(HeightGenName, "flat") == 0)
+	cTerrainHeightGenPtr res;
+	if (NoCaseCompare(HeightGenName, "Flat") == 0)
 	{
-		res = new cHeiGenFlat;
+		res = std::make_shared<cHeiGenFlat>();
 		a_CacheOffByDefault = true;  // We're generating faster than a cache would retrieve data
 	}
 	else if (NoCaseCompare(HeightGenName, "classic") == 0)
 	{
-		res = new cHeiGenClassic(a_Seed);
+		res = std::make_shared<cHeiGenClassic>(a_Seed);
 	}
 	else if (NoCaseCompare(HeightGenName, "DistortedHeightmap") == 0)
 	{
-		res = new cDistortedHeightmap(a_Seed, a_BiomeGen);
+		// Not a heightmap-based generator, but it used to be accessible via HeightGen, so we need to skip making the default out of it
+		// Return an empty pointer, the caller will create the proper generator:
+		return cTerrainHeightGenPtr();
 	}
 	else if (NoCaseCompare(HeightGenName, "End") == 0)
 	{
-		res = new cEndGen(a_Seed);
+		// Not a heightmap-based generator, but it used to be accessible via HeightGen, so we need to skip making the default out of it
+		// Return an empty pointer, the caller will create the proper generator:
+		return cTerrainHeightGenPtr();
 	}
 	else if (NoCaseCompare(HeightGenName, "MinMax") == 0)
 	{
-		res = new cHeiGenMinMax(a_Seed, a_BiomeGen);
+		res = std::make_shared<cHeiGenMinMax>(a_Seed, a_BiomeGen);
 	}
 	else if (NoCaseCompare(HeightGenName, "Mountains") == 0)
 	{
-		res = new cHeiGenMountains(a_Seed);
+		res = std::make_shared<cHeiGenMountains>(a_Seed);
+	}
+	else if (NoCaseCompare(HeightGenName, "BiomalNoise3D") == 0)
+	{
+		// Not a heightmap-based generator, but it used to be accessible via HeightGen, so we need to skip making the default out of it
+		// Return an empty pointer, the caller will create the proper generator:
+		return cTerrainHeightGenPtr();
 	}
 	else if (NoCaseCompare(HeightGenName, "Noise3D") == 0)
 	{
-		res = new cNoise3DComposable(a_Seed);
+		// Not a heightmap-based generator, but it used to be accessible via HeightGen, so we need to skip making the default out of it
+		// Return an empty pointer, the caller will create the proper generator:
+		return cTerrainHeightGenPtr();
 	}
-	else if (NoCaseCompare(HeightGenName, "biomal") == 0)
+	else if (NoCaseCompare(HeightGenName, "Biomal") == 0)
 	{
-		res = new cHeiGenBiomal(a_Seed, a_BiomeGen);
+		res = std::make_shared<cHeiGenBiomal>(a_Seed, a_BiomeGen);
 
 		/*
 		// Performance-testing:
@@ -801,15 +848,14 @@ cTerrainHeightGenPtr cTerrainHeightGen::CreateHeightGen(cIniFile & a_IniFile, cB
 	{
 		// No match found, force-set the default and retry
 		LOGWARN("Unknown HeightGen \"%s\", using \"Biomal\" instead.", HeightGenName.c_str());
-		a_IniFile.DeleteValue("Generator", "HeightGen");
 		a_IniFile.SetValue("Generator", "HeightGen", "Biomal");
 		return CreateHeightGen(a_IniFile, a_BiomeGen, a_Seed, a_CacheOffByDefault);
 	}
 	
 	// Read the settings:
 	res->InitializeHeightGen(a_IniFile);
-	
-	return cTerrainHeightGenPtr(res);
+
+	return res;
 }
 
 
diff --git a/src/Generating/HeiGen.h b/src/Generating/HeiGen.h
index 6ae5ba362..62bb227c6 100644
--- a/src/Generating/HeiGen.h
+++ b/src/Generating/HeiGen.h
@@ -2,10 +2,12 @@
 // HeiGen.h
 
 /*
-Interfaces to the various height generators:
+Interfaces to the various height-based terrain shape generators:
 	- cHeiGenFlat
 	- cHeiGenClassic
 	- cHeiGenBiomal
+
+Also implements the heightmap cache
 */
 
 
@@ -15,32 +17,13 @@ Interfaces to the various height generators:
 #pragma once
 
 #include "ComposableGenerator.h"
-#include "../Noise.h"
-
-
-
-
-
-class cHeiGenFlat :
-	public cTerrainHeightGen
-{
-public:
-	cHeiGenFlat(void) : m_Height(5) {}
-	
-protected:
-
-	int m_Height;
-
-	// cTerrainHeightGen overrides:
-	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
-	virtual void InitializeHeightGen(cIniFile & a_IniFile) override;
-} ;
+#include "../Noise/Noise.h"
 
 
 
 
 
-/// A simple cache that stores N most recently generated chunks' heightmaps; N being settable upon creation
+/** A simple cache that stores N most recently generated chunks' heightmaps; N being settable upon creation */
 class cHeiGenCache :
 	public cTerrainHeightGen
 {
@@ -50,15 +33,11 @@ public:
 	
 	// cTerrainHeightGen overrides:
 	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
-	virtual void InitializeHeightGen(cIniFile & a_IniFile) override;
 	
-	/// Retrieves height at the specified point in the cache, returns true if found, false if not found
+	/** Retrieves height at the specified point in the cache, returns true if found, false if not found */
 	bool GetHeightAt(int a_ChunkX, int a_ChunkZ, int a_RelX, int a_RelZ, HEIGHTTYPE & a_Height);
 	
 protected:
-
-	cTerrainHeightGenPtr m_HeiGenToCache;
-	
 	struct sCacheData
 	{
 		int m_ChunkX;
@@ -66,6 +45,9 @@ protected:
 		cChunkDef::HeightMap m_HeightMap;
 	} ;
 	
+	/** The terrain height generator that is being cached. */
+	cTerrainHeightGenPtr m_HeiGenToCache;
+	
 	// To avoid moving large amounts of data for the MRU behavior, we MRU-ize indices to an array of the actual data
 	int          m_CacheSize;
 	int *        m_CacheOrder;  // MRU-ized order, indices into m_CacheData array
@@ -81,6 +63,57 @@ protected:
 
 
 
+/** Caches heightmaps in multiple underlying caches to improve the distribution and lower the chain length. */
+class cHeiGenMultiCache:
+	public cTerrainHeightGen
+{
+public:
+	cHeiGenMultiCache(cTerrainHeightGenPtr a_HeightGenToCache, size_t a_SubCacheSize, size_t a_NumSubCaches);
+
+	// cTerrainHeightGen overrides:
+	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
+	
+	/** Retrieves height at the specified point in the cache, returns true if found, false if not found */
+	bool GetHeightAt(int a_ChunkX, int a_ChunkZ, int a_RelX, int a_RelZ, HEIGHTTYPE & a_Height);
+
+protected:
+	typedef SharedPtr<cHeiGenCache> cHeiGenCachePtr;
+	typedef std::vector<cHeiGenCachePtr> cHeiGenCachePtrs;
+
+
+	/** The coefficient used to turn Z coords into index (x + Coeff * z). */
+	static const size_t m_CoeffZ = 5;
+
+	/** Number of sub-caches, pulled out of m_SubCaches.size() for performance reasons. */
+	size_t m_NumSubCaches;
+
+	/** The individual sub-caches. */
+	cHeiGenCachePtrs m_SubCaches;
+};
+
+
+
+
+
+class cHeiGenFlat :
+	public cTerrainHeightGen
+{
+public:
+	cHeiGenFlat(void) : m_Height(5) {}
+	
+protected:
+
+	int m_Height;
+
+	// cTerrainHeightGen overrides:
+	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
+	virtual void InitializeHeightGen(cIniFile & a_IniFile) override;
+} ;
+
+
+
+
+
 class cHeiGenClassic :
 	public cTerrainHeightGen
 {
@@ -137,7 +170,11 @@ public:
 		m_BiomeGen(a_BiomeGen)
 	{
 	}
-	
+
+	// cTerrainHeightGen overrides:
+	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
+	virtual void InitializeHeightGen(cIniFile & a_IniFile) override;
+
 protected:
 
 	typedef cChunkDef::BiomeMap BiomeNeighbors[3][3];
@@ -154,11 +191,8 @@ protected:
 		float m_BaseHeight;
 	} ;
 	static const sGenParam m_GenParam[256];
-	
-	// cTerrainHeightGen overrides:
-	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
-	virtual void InitializeHeightGen(cIniFile & a_IniFile) override;
-	
+
+
 	NOISE_DATATYPE GetHeightAt(int a_RelX, int a_RelZ, int a_ChunkX, int a_ChunkZ, const BiomeNeighbors & a_BiomeNeighbors);
 } ;
 
diff --git a/src/Generating/MineShafts.cpp b/src/Generating/MineShafts.cpp
index 55b3b64dd..65588ce4b 100644
--- a/src/Generating/MineShafts.cpp
+++ b/src/Generating/MineShafts.cpp
@@ -20,6 +20,7 @@ in a depth-first processing. Each of the descendants will branch randomly, if no
 #include "MineShafts.h"
 #include "../Cuboid.h"
 #include "../BlockEntities/ChestEntity.h"
+#include "../BlockEntities/MobSpawnerEntity.h"
 
 
 
@@ -875,7 +876,9 @@ void cMineShaftCorridor::PlaceSpawner(cChunkDesc & a_ChunkDesc)
 	)
 	{
 		a_ChunkDesc.SetBlockTypeMeta(SpawnerRelX, m_BoundingBox.p1.y + 1, SpawnerRelZ, E_BLOCK_MOB_SPAWNER, 0);
-		// TODO: The spawner needs its accompanying cMobSpawnerEntity, when implemented
+		cMobSpawnerEntity * MobSpawner = static_cast<cMobSpawnerEntity *>(a_ChunkDesc.GetBlockEntity(SpawnerRelX, m_BoundingBox.p1.y + 1, SpawnerRelZ));
+		ASSERT((MobSpawner != nullptr) && (MobSpawner->GetBlockType() == E_BLOCK_MOB_SPAWNER));
+		MobSpawner->SetEntity(mtCaveSpider);
 	}
 }
 
diff --git a/src/Generating/MineShafts.h b/src/Generating/MineShafts.h
index 2850db571..efb11cfee 100644
--- a/src/Generating/MineShafts.h
+++ b/src/Generating/MineShafts.h
@@ -10,7 +10,6 @@
 #pragma once
 
 #include "GridStructGen.h"
-#include "../Noise.h"
 
 
 
diff --git a/src/Generating/Noise3DGenerator.cpp b/src/Generating/Noise3DGenerator.cpp
index 5a4cb44cf..b43a1a6de 100644
--- a/src/Generating/Noise3DGenerator.cpp
+++ b/src/Generating/Noise3DGenerator.cpp
@@ -61,80 +61,110 @@ public:
 
 
 
-////////////////////////////////////////////////////////////////////////////////
-// cNoise3DGenerator:
-
-cNoise3DGenerator::cNoise3DGenerator(cChunkGenerator & a_ChunkGenerator) :
-	super(a_ChunkGenerator),
-	m_Perlin(1000),
-	m_Cubic(1000)
+#if 0
+// Perform speed test of the cInterpolNoise class
+static class cInterpolNoiseSpeedTest
 {
-	m_Perlin.AddOctave(1, (NOISE_DATATYPE)0.5);
-	m_Perlin.AddOctave((NOISE_DATATYPE)0.5, 1);
-	m_Perlin.AddOctave((NOISE_DATATYPE)0.5, 2);
-
-	#if 0
-	// DEBUG: Test the noise generation:
-	// NOTE: In order to be able to run MCS with this code, you need to increase the default thread stack size
-	// In MSVC, it is done in Project Settings -> Configuration Properties -> Linker -> System, set Stack reserve size to at least 64M
-	m_SeaLevel            = 62;
-	m_HeightAmplification = 0;
-	m_MidPoint            = 75;
-	m_FrequencyX          = 4;
-	m_FrequencyY          = 4;
-	m_FrequencyZ          = 4;
-	m_AirThreshold        = 0.5;
-
-	const int NumChunks = 4;
-	NOISE_DATATYPE Noise[NumChunks][cChunkDef::Width * cChunkDef::Width * cChunkDef::Height];
-	for (int x = 0; x < NumChunks; x++)
+public:
+	cInterpolNoiseSpeedTest(void)
 	{
-		GenerateNoiseArray(x, 5, Noise[x]);
+		TestSpeed2D();
+		TestSpeed3D();
+		printf("InterpolNoise speed comparison finished.\n");
 	}
 
-	// Save in XY cuts:
-	cFile f1;
-	if (f1.Open("Test_XY.grab", cFile::fmWrite))
+
+	/** Compare the speed of the 3D InterpolNoise vs 3D CubicNoise. */
+	void TestSpeed3D(void)
 	{
-		for (int z = 0; z < cChunkDef::Width; z++)
+		printf("Evaluating 3D noise performance...\n");
+		static const int SIZE_X = 128;
+		static const int SIZE_Y = 128;
+		static const int SIZE_Z = 128;
+		static const NOISE_DATATYPE MUL = 80;
+		std::unique_ptr<NOISE_DATATYPE[]> arr(new NOISE_DATATYPE[SIZE_X * SIZE_Y * SIZE_Z]);
+		cTimer timer;
+
+		// Test the cInterpolNoise:
+		cInterpolNoise<Interp5Deg> interpNoise(1);
+		long long start = timer.GetNowTime();
+		for (int i = 0; i < 30; i++)
 		{
-			for (int y = 0; y < cChunkDef::Height; y++)
-			{
-				for (int i = 0; i < NumChunks; i++)
-				{
-					int idx = y * cChunkDef::Width + z * cChunkDef::Width * cChunkDef::Height;
-					unsigned char buf[cChunkDef::Width];
-					for (int x = 0; x < cChunkDef::Width; x++)
-					{
-						buf[x] = (unsigned char)(std::min(256, std::max(0, (int)(128 + 32 * Noise[i][idx++]))));
-					}
-					f1.Write(buf, cChunkDef::Width);
-				}
-			}  // for y
-		}  // for z
-	}  // if (XY file open)
+			interpNoise.Generate3D(arr.get(), SIZE_X, SIZE_Y, SIZE_Z, MUL * i, MUL * i + MUL, 0, MUL, 0, MUL);
+		}
+		long long end = timer.GetNowTime();
+		printf("InterpolNoise took %.02f sec\n", static_cast<float>(end - start) / 1000);
+
+		// Test the cCubicNoise:
+		cCubicNoise cubicNoise(1);
+		start = timer.GetNowTime();
+		for (int i = 0; i < 30; i++)
+		{
+			cubicNoise.Generate3D(arr.get(), SIZE_X, SIZE_Y, SIZE_Z, MUL * i, MUL * i + MUL, 0, MUL, 0, MUL);
+		}
+		end = timer.GetNowTime();
+		printf("CubicNoise took %.02f sec\n", static_cast<float>(end - start) / 1000);
+		printf("3D noise performance comparison finished.\n");
+	}
+
 
-	cFile f2;
-	if (f2.Open("Test_XZ.grab", cFile::fmWrite))
+	/** Compare the speed of the 2D InterpolNoise vs 2D CubicNoise. */
+	void TestSpeed2D(void)
 	{
-		for (int y = 0; y < cChunkDef::Height; y++)
+		printf("Evaluating 2D noise performance...\n");
+		static const int SIZE_X = 128;
+		static const int SIZE_Y = 128;
+		static const NOISE_DATATYPE MUL = 80;
+		std::unique_ptr<NOISE_DATATYPE[]> arr(new NOISE_DATATYPE[SIZE_X * SIZE_Y]);
+		cTimer timer;
+
+		// Test the cInterpolNoise:
+		cInterpolNoise<Interp5Deg> interpNoise(1);
+		long long start = timer.GetNowTime();
+		for (int i = 0; i < 500; i++)
 		{
-			for (int z = 0; z < cChunkDef::Width; z++)
-			{
-				for (int i = 0; i < NumChunks; i++)
-				{
-					int idx = y * cChunkDef::Width + z * cChunkDef::Width * cChunkDef::Height;
-					unsigned char buf[cChunkDef::Width];
-					for (int x = 0; x < cChunkDef::Width; x++)
-					{
-						buf[x] = (unsigned char)(std::min(256, std::max(0, (int)(128 + 32 * Noise[i][idx++]))));
-					}
-					f2.Write(buf, cChunkDef::Width);
-				}
-			}  // for z
-		}  // for y
-	}  // if (XZ file open)
-	#endif  // 0
+			interpNoise.Generate2D(arr.get(), SIZE_X, SIZE_Y, MUL * i, MUL * i + MUL, 0, MUL);
+		}
+		long long end = timer.GetNowTime();
+		printf("InterpolNoise took %.02f sec\n", static_cast<float>(end - start) / 1000);
+
+		// Test the cCubicNoise:
+		cCubicNoise cubicNoise(1);
+		start = timer.GetNowTime();
+		for (int i = 0; i < 500; i++)
+		{
+			cubicNoise.Generate2D(arr.get(), SIZE_X, SIZE_Y, MUL * i, MUL * i + MUL, 0, MUL);
+		}
+		end = timer.GetNowTime();
+		printf("CubicNoise took %.02f sec\n", static_cast<float>(end - start) / 1000);
+		printf("2D noise performance comparison finished.\n");
+	}
+} g_InterpolNoiseSpeedTest;
+#endif
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cNoise3DGenerator:
+
+cNoise3DGenerator::cNoise3DGenerator(cChunkGenerator & a_ChunkGenerator) :
+	super(a_ChunkGenerator),
+	m_Perlin(1000),
+	m_Cubic(1000)
+{
+	m_Perlin.AddOctave(1,  1);
+	m_Perlin.AddOctave(2,  0.5);
+	m_Perlin.AddOctave(4,  0.25);
+	m_Perlin.AddOctave(8,  0.125);
+	m_Perlin.AddOctave(16, 0.0625);
+
+	m_Cubic.AddOctave(1,  1);
+	m_Cubic.AddOctave(2,  0.5);
+	m_Cubic.AddOctave(4,  0.25);
+	m_Cubic.AddOctave(8,  0.125);
+	m_Cubic.AddOctave(16, 0.0625);
 }
 
 
@@ -153,9 +183,9 @@ cNoise3DGenerator::~cNoise3DGenerator()
 void cNoise3DGenerator::Initialize(cIniFile & a_IniFile)
 {
 	// Params:
-	m_SeaLevel            =                 a_IniFile.GetValueSetI("Generator", "Noise3DSeaLevel", 62);
-	m_HeightAmplification = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DHeightAmplification", 0);
-	m_MidPoint            = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DMidPoint", 75);
+	m_SeaLevel            =                 a_IniFile.GetValueSetI("Generator", "SeaLevel", 62);
+	m_HeightAmplification = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DHeightAmplification", 0.1);
+	m_MidPoint            = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DMidPoint", 68);
 	m_FrequencyX          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyX", 8);
 	m_FrequencyY          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyY", 8);
 	m_FrequencyZ          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyZ", 8);
@@ -220,10 +250,10 @@ void cNoise3DGenerator::GenerateNoiseArray(int a_ChunkX, int a_ChunkZ, NOISE_DAT
 	NOISE_DATATYPE NoiseW[DIM_X * DIM_Y * DIM_Z];  // Workspace that the noise calculation can use and trash
 
 	// Our noise array has different layout, XZY, instead of regular chunk's XYZ, that's why the coords are "renamed"
-	NOISE_DATATYPE StartX = ((NOISE_DATATYPE)(a_ChunkX       * cChunkDef::Width))     / m_FrequencyX;
-	NOISE_DATATYPE EndX   = ((NOISE_DATATYPE)((a_ChunkX + 1) * cChunkDef::Width) - 1) / m_FrequencyX;
-	NOISE_DATATYPE StartZ = ((NOISE_DATATYPE)(a_ChunkZ       * cChunkDef::Width))     / m_FrequencyZ;
-	NOISE_DATATYPE EndZ   = ((NOISE_DATATYPE)((a_ChunkZ + 1) * cChunkDef::Width) - 1) / m_FrequencyZ;
+	NOISE_DATATYPE StartX = ((NOISE_DATATYPE)(a_ChunkX       * cChunkDef::Width)) / m_FrequencyX;
+	NOISE_DATATYPE EndX   = ((NOISE_DATATYPE)((a_ChunkX + 1) * cChunkDef::Width)) / m_FrequencyX;
+	NOISE_DATATYPE StartZ = ((NOISE_DATATYPE)(a_ChunkZ       * cChunkDef::Width)) / m_FrequencyZ;
+	NOISE_DATATYPE EndZ   = ((NOISE_DATATYPE)((a_ChunkZ + 1) * cChunkDef::Width)) / m_FrequencyZ;
 	NOISE_DATATYPE StartY = 0;
 	NOISE_DATATYPE EndY   = ((NOISE_DATATYPE)256) / m_FrequencyY;
 
@@ -233,23 +263,23 @@ void cNoise3DGenerator::GenerateNoiseArray(int a_ChunkX, int a_ChunkZ, NOISE_DAT
 
 	// Precalculate a "height" array:
 	NOISE_DATATYPE Height[DIM_X * DIM_Z];  // Output for the cubic noise heightmap ("source")
-	m_Cubic.Generate2D(Height, DIM_X, DIM_Z, StartX / 25, EndX / 25, StartZ / 25, EndZ / 25);
+	m_Cubic.Generate2D(Height, DIM_X, DIM_Z, StartX / 5, EndX / 5, StartZ / 5, EndZ / 5);
 	for (size_t i = 0; i < ARRAYCOUNT(Height); i++)
 	{
-		Height[i] = std::abs(Height[i]) * m_HeightAmplification + 1;
+		Height[i] = Height[i] * m_HeightAmplification;
 	}
 
 	// Modify the noise by height data:
 	for (int y = 0; y < DIM_Y; y++)
 	{
-		NOISE_DATATYPE AddHeight = (y * UPSCALE_Y - m_MidPoint) / 20;
-		AddHeight *= AddHeight * AddHeight;
+		NOISE_DATATYPE AddHeight = (y * UPSCALE_Y - m_MidPoint) / 30;
+		// AddHeight *= AddHeight * AddHeight;
 		for (int z = 0; z < DIM_Z; z++)
 		{
 			NOISE_DATATYPE * CurRow = &(NoiseO[y * DIM_X + z * DIM_X * DIM_Y]);
 			for (int x = 0; x < DIM_X; x++)
 			{
-				CurRow[x] += AddHeight / Height[x + DIM_X * z];
+				CurRow[x] += AddHeight + Height[x + DIM_X * z];
 			}
 		}
 	}
@@ -346,9 +376,10 @@ void cNoise3DGenerator::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 // cNoise3DComposable:
 
 cNoise3DComposable::cNoise3DComposable(int a_Seed) :
-	m_Noise1(a_Seed + 1000),
-	m_Noise2(a_Seed + 2000),
-	m_Noise3(a_Seed + 3000)
+	m_ChoiceNoise(a_Seed),
+	m_DensityNoiseA(a_Seed + 1),
+	m_DensityNoiseB(a_Seed + 2),
+	m_BaseNoise(a_Seed + 3)
 {
 }
 
@@ -359,13 +390,50 @@ cNoise3DComposable::cNoise3DComposable(int a_Seed) :
 void cNoise3DComposable::Initialize(cIniFile & a_IniFile)
 {
 	// Params:
-	m_SeaLevel            =                 a_IniFile.GetValueSetI("Generator", "Noise3DSeaLevel", 62);
-	m_HeightAmplification = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DHeightAmplification", 0);
+	// The defaults generate extreme hills terrain
+	m_HeightAmplification = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DHeightAmplification", 0.045);
 	m_MidPoint            = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DMidPoint", 75);
-	m_FrequencyX          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyX", 10);
-	m_FrequencyY          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyY", 10);
-	m_FrequencyZ          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyZ", 10);
-	m_AirThreshold        = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DAirThreshold", 0.5);
+	m_FrequencyX          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyX", 40);
+	m_FrequencyY          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyY", 40);
+	m_FrequencyZ          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyZ", 40);
+	m_BaseFrequencyX      = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DBaseFrequencyX", 40);
+	m_BaseFrequencyZ      = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DBaseFrequencyZ", 40);
+	m_ChoiceFrequencyX    = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DChoiceFrequencyX", 40);
+	m_ChoiceFrequencyY    = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DChoiceFrequencyY", 80);
+	m_ChoiceFrequencyZ    = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DChoiceFrequencyZ", 40);
+	m_AirThreshold        = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DAirThreshold", 0);
+	int NumChoiceOctaves  = a_IniFile.GetValueSetI("Generator", "Noise3DNumChoiceOctaves",  4);
+	int NumDensityOctaves = a_IniFile.GetValueSetI("Generator", "Noise3DNumDensityOctaves", 6);
+	int NumBaseOctaves    = a_IniFile.GetValueSetI("Generator", "Noise3DNumBaseOctaves",    6);
+	NOISE_DATATYPE BaseNoiseAmplitude = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DBaseAmplitude", 1);
+
+	// Add octaves for the choice noise:
+	NOISE_DATATYPE wavlen = 1, ampl = 0.5;
+	for (int i = 0; i < NumChoiceOctaves; i++)
+	{
+		m_ChoiceNoise.AddOctave(wavlen, ampl);
+		wavlen = wavlen * 2;
+		ampl = ampl / 2;
+	}
+
+	// Add octaves for the density noises:
+	wavlen = 1, ampl = 1;
+	for (int i = 0; i < NumDensityOctaves; i++)
+	{
+		m_DensityNoiseA.AddOctave(wavlen, ampl);
+		m_DensityNoiseB.AddOctave(wavlen, ampl);
+		wavlen = wavlen * 2;
+		ampl = ampl / 2;
+	}
+
+	// Add octaves for the base noise:
+	wavlen = 1, ampl = BaseNoiseAmplitude;
+	for (int i = 0; i < NumBaseOctaves; i++)
+	{
+		m_BaseNoise.AddOctave(wavlen, ampl);
+		wavlen = wavlen * 2;
+		ampl = ampl / 2;
+	}
 }
 
 
@@ -376,142 +444,266 @@ void cNoise3DComposable::GenerateNoiseArrayIfNeeded(int a_ChunkX, int a_ChunkZ)
 {
 	if ((a_ChunkX == m_LastChunkX) && (a_ChunkZ == m_LastChunkZ))
 	{
-		// The noise for this chunk is already generated in m_Noise
+		// The noise for this chunk is already generated in m_NoiseArray
 		return;
 	}
 	m_LastChunkX = a_ChunkX;
 	m_LastChunkZ = a_ChunkZ;
 
-	// Upscaling parameters:
-	const int UPSCALE_X = 8;
-	const int UPSCALE_Y = 4;
-	const int UPSCALE_Z = 8;
-
-	// Precalculate a "height" array:
-	NOISE_DATATYPE Height[17 * 17];  // x + 17 * z
-	for (int z = 0; z < 17; z += UPSCALE_Z)
+	// Generate all the noises:
+	NOISE_DATATYPE ChoiceNoise[5 * 5 * 33];
+	NOISE_DATATYPE Workspace[5 * 5 * 33];
+	NOISE_DATATYPE DensityNoiseA[5 * 5 * 33];
+	NOISE_DATATYPE DensityNoiseB[5 * 5 * 33];
+	NOISE_DATATYPE BaseNoise[5 * 5];
+	NOISE_DATATYPE BlockX = static_cast<NOISE_DATATYPE>(a_ChunkX * cChunkDef::Width);
+	NOISE_DATATYPE BlockZ = static_cast<NOISE_DATATYPE>(a_ChunkZ * cChunkDef::Width);
+	// Note that we have to swap the X and Y coords, because noise generator uses [x + SizeX * y + SizeX * SizeY * z] ordering and we want "BlockY" to be "x":
+	m_ChoiceNoise.Generate3D  (ChoiceNoise,   33, 5, 5, 0, 257 / m_ChoiceFrequencyY, BlockX / m_ChoiceFrequencyX, (BlockX + 17) / m_ChoiceFrequencyX, BlockZ / m_ChoiceFrequencyZ, (BlockZ + 17) / m_ChoiceFrequencyZ, Workspace);
+	m_DensityNoiseA.Generate3D(DensityNoiseA, 33, 5, 5, 0, 257 / m_FrequencyY,       BlockX / m_FrequencyX,       (BlockX + 17) / m_FrequencyX,       BlockZ / m_FrequencyZ,       (BlockZ + 17) / m_FrequencyZ,       Workspace);
+	m_DensityNoiseB.Generate3D(DensityNoiseB, 33, 5, 5, 0, 257 / m_FrequencyY,       BlockX / m_FrequencyX,       (BlockX + 17) / m_FrequencyX,       BlockZ / m_FrequencyZ,       (BlockZ + 17) / m_FrequencyZ,       Workspace);
+	m_BaseNoise.Generate2D    (BaseNoise,     5, 5,     BlockX / m_BaseFrequencyX,   (BlockX + 17) / m_BaseFrequencyX,   BlockZ / m_FrequencyZ,       (BlockZ + 17) / m_FrequencyZ, Workspace);
+
+	// Calculate the final noise based on the partial noises:
+	for (int z = 0; z < 5; z++)
 	{
-		NOISE_DATATYPE NoiseZ = ((NOISE_DATATYPE)(a_ChunkZ * cChunkDef::Width + z)) / m_FrequencyZ;
-		for (int x = 0; x < 17; x += UPSCALE_X)
+		for (int x = 0; x < 5; x++)
 		{
-			NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(a_ChunkX * cChunkDef::Width + x)) / m_FrequencyX;
-			NOISE_DATATYPE val = std::abs(m_Noise1.CubicNoise2D(NoiseX / 5, NoiseZ / 5)) * m_HeightAmplification + 1;
-			Height[x + 17 * z] = val * val * val;
+			NOISE_DATATYPE curBaseNoise = BaseNoise[x + 5 * z];
+			for (int y = 0; y < 33; y++)
+			{
+				NOISE_DATATYPE AddHeight = (static_cast<NOISE_DATATYPE>(y * 8) - m_MidPoint) * m_HeightAmplification;
+
+				// If "underground", make the terrain smoother by forcing the vertical linear gradient into steeper slope:
+				if (AddHeight < 0)
+				{
+					AddHeight *= 4;
+				}
+
+				// If too high, cut off any terrain:
+				if (y > 28)
+				{
+					AddHeight = AddHeight + static_cast<NOISE_DATATYPE>(y - 28) / 4;
+				}
+
+				// Decide between the two density noises:
+				int idx = 33 * x + 33 * 5 * z + y;
+				Workspace[idx] = ClampedLerp(DensityNoiseA[idx], DensityNoiseB[idx], 8 * (ChoiceNoise[idx] + 0.5f)) + AddHeight + curBaseNoise;
+			}
 		}
 	}
+	LinearUpscale3DArray<NOISE_DATATYPE>(Workspace, 33, 5, 5, m_NoiseArray, 8, 4, 4);
+}
+
+
+
+
 
-	for (int y = 0; y < 257; y += UPSCALE_Y)
+void cNoise3DComposable::GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape)
+{
+	GenerateNoiseArrayIfNeeded(a_ChunkX, a_ChunkZ);
+
+	// Translate the noise array into Shape:
+	for (int z = 0; z < cChunkDef::Width; z++)
 	{
-		NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)y) / m_FrequencyY;
-		NOISE_DATATYPE AddHeight = (y - m_MidPoint) / 20;
-		AddHeight *= AddHeight * AddHeight;
-		NOISE_DATATYPE * CurFloor = &(m_NoiseArray[y * 17 * 17]);
-		for (int z = 0; z < 17; z += UPSCALE_Z)
+		for (int x = 0; x < cChunkDef::Width; x++)
 		{
-			NOISE_DATATYPE NoiseZ = ((NOISE_DATATYPE)(a_ChunkZ * cChunkDef::Width + z)) / m_FrequencyZ;
-			for (int x = 0; x < 17; x += UPSCALE_X)
+			for (int y = 0; y < cChunkDef::Height; y++)
 			{
-				NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(a_ChunkX * cChunkDef::Width + x)) / m_FrequencyX;
-				CurFloor[x + 17 * z] = (
-					m_Noise1.CubicNoise3D(NoiseX, NoiseY, NoiseZ) * (NOISE_DATATYPE)0.5 +
-					m_Noise2.CubicNoise3D(NoiseX / 2, NoiseY / 2, NoiseZ / 2) +
-					m_Noise3.CubicNoise3D(NoiseX / 4, NoiseY / 4, NoiseZ / 4) * 2 +
-					AddHeight / Height[x + 17 * z]
-				);
+				a_Shape[y + x * 256 + z * 256 * 16] = (m_NoiseArray[y + 257 * x + 257 * 17 * z] > m_AirThreshold) ? 0 : 1;
 			}
-		}
-		// Linear-interpolate this XZ floor:
-		LinearUpscale2DArrayInPlace<17, 17, UPSCALE_X, UPSCALE_Z>(CurFloor);
-	}
+		}  // for x
+	}  // for z
+}
 
-	// Finish the 3D linear interpolation by interpolating between each XZ-floors on the Y axis
-	for (int y = 1; y < cChunkDef::Height; y++)
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cBiomalNoise3DComposable:
+
+cBiomalNoise3DComposable::cBiomalNoise3DComposable(int a_Seed, cBiomeGenPtr a_BiomeGen) :
+	m_ChoiceNoise(a_Seed),
+	m_DensityNoiseA(a_Seed + 1),
+	m_DensityNoiseB(a_Seed + 2),
+	m_BaseNoise(a_Seed + 3),
+	m_BiomeGen(a_BiomeGen),
+	m_LastChunkX(0x7fffffff),  // Set impossible coords for the chunk so that it's always considered stale
+	m_LastChunkZ(0x7fffffff)
+{
+	// Generate the weight distribution for summing up neighboring biomes:
+	m_WeightSum = 0;
+	for (int z = 0; z <= AVERAGING_SIZE * 2; z++)
 	{
-		if ((y % UPSCALE_Y) == 0)
-		{
-			// This is the interpolation source floor, already calculated
-			continue;
-		}
-		int LoFloorY = (y / UPSCALE_Y) * UPSCALE_Y;
-		int HiFloorY = LoFloorY + UPSCALE_Y;
-		NOISE_DATATYPE * LoFloor  = &(m_NoiseArray[LoFloorY * 17 * 17]);
-		NOISE_DATATYPE * HiFloor  = &(m_NoiseArray[HiFloorY * 17 * 17]);
-		NOISE_DATATYPE * CurFloor = &(m_NoiseArray[y * 17 * 17]);
-		NOISE_DATATYPE Ratio = ((NOISE_DATATYPE)(y % UPSCALE_Y)) / UPSCALE_Y;
-		int idx = 0;
-		for (int z = 0; z < cChunkDef::Width; z++)
+		for (int x = 0; x <= AVERAGING_SIZE * 2; x++)
 		{
-			for (int x = 0; x < cChunkDef::Width; x++)
-			{
-				CurFloor[idx] = LoFloor[idx] + (HiFloor[idx] - LoFloor[idx]) * Ratio;
-				idx += 1;
-			}
-			idx += 1;  // Skipping one X column
+			m_Weight[z][x] = static_cast<NOISE_DATATYPE>((AVERAGING_SIZE - std::abs(AVERAGING_SIZE - x)) + (AVERAGING_SIZE - std::abs(AVERAGING_SIZE - z)));
+			m_WeightSum += m_Weight[z][x];
 		}
 	}
+}
+
+
+
+
 
-	// The noise array is now fully interpolated
-	/*
-	// DEBUG: Output two images of the array, sliced by XY and XZ:
-	cFile f1;
-	if (f1.Open(Printf("Chunk_%d_%d_XY.raw", a_ChunkX, a_ChunkZ), cFile::fmWrite))
+void cBiomalNoise3DComposable::Initialize(cIniFile & a_IniFile)
+{
+	// Params:
+	// The defaults generate extreme hills terrain
+	m_SeaLevel            =                 a_IniFile.GetValueSetI("Generator", "SeaLevel", 62);
+	m_FrequencyX          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DFrequencyX", 40);
+	m_FrequencyY          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DFrequencyY", 40);
+	m_FrequencyZ          = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DFrequencyZ", 40);
+	m_BaseFrequencyX      = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DBaseFrequencyX", 40);
+	m_BaseFrequencyZ      = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DBaseFrequencyZ", 40);
+	m_ChoiceFrequencyX    = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DChoiceFrequencyX", 40);
+	m_ChoiceFrequencyY    = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DChoiceFrequencyY", 80);
+	m_ChoiceFrequencyZ    = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DChoiceFrequencyZ", 40);
+	m_AirThreshold        = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DAirThreshold", 0);
+	int NumChoiceOctaves  = a_IniFile.GetValueSetI("Generator", "BiomalNoise3DNumChoiceOctaves",  4);
+	int NumDensityOctaves = a_IniFile.GetValueSetI("Generator", "BiomalNoise3DNumDensityOctaves", 6);
+	int NumBaseOctaves    = a_IniFile.GetValueSetI("Generator", "BiomalNoise3DNumBaseOctaves",    6);
+	NOISE_DATATYPE BaseNoiseAmplitude = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "BiomalNoise3DBaseAmplitude", 1);
+
+	// Add octaves for the choice noise:
+	NOISE_DATATYPE wavlen = 1, ampl = 0.5;
+	for (int i = 0; i < NumChoiceOctaves; i++)
 	{
-		for (int z = 0; z < cChunkDef::Width; z++)
-		{
-			for (int y = 0; y < cChunkDef::Height; y++)
-			{
-				int idx = y * 17 * 17 + z * 17;
-				unsigned char buf[16];
-				for (int x = 0; x < cChunkDef::Width; x++)
-				{
-					buf[x] = (unsigned char)(std::min(256, std::max(0, (int)(128 + 128 * m_Noise[idx++]))));
-				}
-				f1.Write(buf, 16);
-			}  // for y
-		}  // for z
-	}  // if (XY file open)
+		m_ChoiceNoise.AddOctave(wavlen, ampl);
+		wavlen = wavlen * 2;
+		ampl = ampl / 2;
+	}
 
-	cFile f2;
-	if (f2.Open(Printf("Chunk_%d_%d_XZ.raw", a_ChunkX, a_ChunkZ), cFile::fmWrite))
+	// Add octaves for the density noises:
+	wavlen = 1, ampl = 1;
+	for (int i = 0; i < NumDensityOctaves; i++)
 	{
-		for (int y = 0; y < cChunkDef::Height; y++)
+		m_DensityNoiseA.AddOctave(wavlen, ampl);
+		m_DensityNoiseB.AddOctave(wavlen, ampl);
+		wavlen = wavlen * 2;
+		ampl = ampl / 2;
+	}
+
+	// Add octaves for the base noise:
+	wavlen = 1, ampl = BaseNoiseAmplitude;
+	for (int i = 0; i < NumBaseOctaves; i++)
+	{
+		m_BaseNoise.AddOctave(wavlen, ampl);
+		wavlen = wavlen * 2;
+		ampl = ampl / 2;
+	}
+}
+
+
+
+
+
+void cBiomalNoise3DComposable::GenerateNoiseArrayIfNeeded(int a_ChunkX, int a_ChunkZ)
+{
+	if ((a_ChunkX == m_LastChunkX) && (a_ChunkZ == m_LastChunkZ))
+	{
+		// The noise for this chunk is already generated in m_NoiseArray
+		return;
+	}
+	m_LastChunkX = a_ChunkX;
+	m_LastChunkZ = a_ChunkZ;
+
+	// Calculate the parameters for the biomes:
+	ChunkParam MidPoint;
+	ChunkParam HeightAmp;
+	CalcBiomeParamArrays(a_ChunkX, a_ChunkZ, HeightAmp, MidPoint);
+
+	// Generate all the noises:
+	NOISE_DATATYPE ChoiceNoise[5 * 5 * 33];
+	NOISE_DATATYPE Workspace[5 * 5 * 33];
+	NOISE_DATATYPE DensityNoiseA[5 * 5 * 33];
+	NOISE_DATATYPE DensityNoiseB[5 * 5 * 33];
+	NOISE_DATATYPE BaseNoise[5 * 5];
+	NOISE_DATATYPE BlockX = static_cast<NOISE_DATATYPE>(a_ChunkX * cChunkDef::Width);
+	NOISE_DATATYPE BlockZ = static_cast<NOISE_DATATYPE>(a_ChunkZ * cChunkDef::Width);
+	// Note that we have to swap the X and Y coords, because noise generator uses [x + SizeX * y + SizeX * SizeY * z] ordering and we want "BlockY" to be "x":
+	m_ChoiceNoise.Generate3D  (ChoiceNoise,   33, 5, 5, 0, 257 / m_ChoiceFrequencyY, BlockX / m_ChoiceFrequencyX, (BlockX + 17) / m_ChoiceFrequencyX, BlockZ / m_ChoiceFrequencyZ, (BlockZ + 17) / m_ChoiceFrequencyZ, Workspace);
+	m_DensityNoiseA.Generate3D(DensityNoiseA, 33, 5, 5, 0, 257 / m_FrequencyY,       BlockX / m_FrequencyX,       (BlockX + 17) / m_FrequencyX,       BlockZ / m_FrequencyZ,       (BlockZ + 17) / m_FrequencyZ,       Workspace);
+	m_DensityNoiseB.Generate3D(DensityNoiseB, 33, 5, 5, 0, 257 / m_FrequencyY,       BlockX / m_FrequencyX,       (BlockX + 17) / m_FrequencyX,       BlockZ / m_FrequencyZ,       (BlockZ + 17) / m_FrequencyZ,       Workspace);
+	m_BaseNoise.Generate2D    (BaseNoise,     5, 5,     BlockX / m_BaseFrequencyX,   (BlockX + 17) / m_BaseFrequencyX,   BlockZ / m_FrequencyZ,       (BlockZ + 17) / m_FrequencyZ, Workspace);
+
+	// Calculate the final noise based on the partial noises:
+	for (int z = 0; z < 5; z++)
+	{
+		for (int x = 0; x < 5; x++)
 		{
-			for (int z = 0; z < cChunkDef::Width; z++)
+			NOISE_DATATYPE curMidPoint = MidPoint[x + 5 * z];
+			NOISE_DATATYPE curHeightAmp = HeightAmp[x + 5 * z];
+			NOISE_DATATYPE curBaseNoise = BaseNoise[x + 5 * z];
+			for (int y = 0; y < 33; y++)
 			{
-				int idx = y * 17 * 17 + z * 17;
-				unsigned char buf[16];
-				for (int x = 0; x < cChunkDef::Width; x++)
+				NOISE_DATATYPE AddHeight = (static_cast<NOISE_DATATYPE>(y * 8) - curMidPoint) * curHeightAmp;
+
+				// If "underground", make the terrain smoother by forcing the vertical linear gradient into steeper slope:
+				if (AddHeight < 0)
 				{
-					buf[x] = (unsigned char)(std::min(256, std::max(0, (int)(128 + 128 * m_Noise[idx++]))));
+					AddHeight *= 4;
 				}
-				f2.Write(buf, 16);
-			}  // for z
-		}  // for y
-	}  // if (XZ file open)
-	*/
+				// If too high, cut off any terrain:
+				if (y > 28)
+				{
+					AddHeight = AddHeight + static_cast<NOISE_DATATYPE>(y - 28) / 4;
+				}
+
+				// Decide between the two density noises:
+				int idx = 33 * x + y + 33 * 5 * z;
+				Workspace[idx] = ClampedLerp(DensityNoiseA[idx], DensityNoiseB[idx], 8 * (ChoiceNoise[idx] + 0.5f)) + AddHeight + curBaseNoise;
+			}
+		}
+	}
+	LinearUpscale3DArray<NOISE_DATATYPE>(Workspace, 33, 5, 5, m_NoiseArray, 8, 4, 4);
 }
 
 
 
 
 
-void cNoise3DComposable::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap)
+void cBiomalNoise3DComposable::CalcBiomeParamArrays(int a_ChunkX, int a_ChunkZ, ChunkParam & a_HeightAmp, ChunkParam & a_MidPoint)
 {
-	GenerateNoiseArrayIfNeeded(a_ChunkX, a_ChunkZ);
+	// Generate the 3*3 chunks of biomes around this chunk:
+	cChunkDef::BiomeMap neighborBiomes[3 * 3];
+	for (int z = 0; z < 3; z++)
+	{
+		for (int x = 0; x < 3; x++)
+		{
+			m_BiomeGen->GenBiomes(a_ChunkX + x - 1, a_ChunkZ + z - 1, neighborBiomes[x + 3 * z]);
+		}
+	}
 
-	for (int z = 0; z < cChunkDef::Width; z++)
+	// Sum up the biome values:
+	for (int z = 0; z < 5; z++)
 	{
-		for (int x = 0; x < cChunkDef::Width; x++)
+		for (int x = 0; x < 5; x++)
 		{
-			cChunkDef::SetHeight(a_HeightMap, x, z, m_SeaLevel);
-			for (int y = cChunkDef::Height - 1; y > m_SeaLevel; y--)
+			NOISE_DATATYPE totalHeightAmp = 0;
+			NOISE_DATATYPE totalMidPoint = 0;
+			// Add up the biomes around this point:
+			for (int relz = 0; relz <= AVERAGING_SIZE * 2; ++relz)
 			{
-				if (m_NoiseArray[y * 17 * 17 + z * 17 + x] <= m_AirThreshold)
+				int colz = 16 + z * 4 + relz - AVERAGING_SIZE;   // Biome Z coord relative to the neighborBiomes start
+				int neicellz = colz / 16;	                       // Chunk Z coord relative to the neighborBiomes start
+				int neirelz  = colz % 16;	                       // Biome Z coord relative to cz in neighborBiomes
+				for (int relx = 0; relx <= AVERAGING_SIZE * 2; ++relx)
 				{
-					cChunkDef::SetHeight(a_HeightMap, x, z, y);
-					break;
-				}
-			}  // for y
+					int colx = 16 + x * 4 + relx - AVERAGING_SIZE;   // Biome X coord relative to the neighborBiomes start
+					int neicellx = colx / 16;	                       // Chunk X coord relative to the neighborBiomes start
+					int neirelx  = colx % 16;	                       // Biome X coord relative to cz in neighborBiomes
+					EMCSBiome biome = cChunkDef::GetBiome(neighborBiomes[neicellx + neicellz * 3], neirelx, neirelz);
+					NOISE_DATATYPE heightAmp, midPoint;
+					GetBiomeParams(biome, heightAmp, midPoint);
+					totalHeightAmp += heightAmp * m_Weight[relz][relx];
+					totalMidPoint += midPoint * m_Weight[relz][relx];
+				}  // for relx
+			}  // for relz
+			a_HeightAmp[x + 5 * z] = totalHeightAmp / m_WeightSum;
+			a_MidPoint[x + 5 * z] = totalMidPoint / m_WeightSum;
 		}  // for x
 	}  // for z
 }
@@ -520,52 +712,97 @@ void cNoise3DComposable::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::Hei
 
 
 
-void cNoise3DComposable::ComposeTerrain(cChunkDesc & a_ChunkDesc)
+void cBiomalNoise3DComposable::GetBiomeParams(EMCSBiome a_Biome, NOISE_DATATYPE & a_HeightAmp, NOISE_DATATYPE & a_MidPoint)
 {
-	GenerateNoiseArrayIfNeeded(a_ChunkDesc.GetChunkX(), a_ChunkDesc.GetChunkZ());
+	switch (a_Biome)
+	{
+		case biBeach:                a_HeightAmp = 0.2f;   a_MidPoint =  60; break;
+		case biBirchForest:          a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biBirchForestHills:     a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		case biBirchForestHillsM:    a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		case biBirchForestM:         a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biColdBeach:            a_HeightAmp = 0.3f;   a_MidPoint =  62; break;
+		case biColdTaiga:            a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biColdTaigaM:           a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biColdTaigaHills:       a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		case biDesertHills:          a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		case biDeepOcean:            a_HeightAmp = 0.17f;  a_MidPoint =  35; break;
+		case biDesert:               a_HeightAmp = 0.29f;  a_MidPoint =  62; break;
+		case biDesertM:              a_HeightAmp = 0.29f;  a_MidPoint =  62; break;
+		case biEnd:                  a_HeightAmp = 0.15f;  a_MidPoint =  64; break;
+		case biExtremeHills:         a_HeightAmp = 0.045f; a_MidPoint =  75; break;
+		case biExtremeHillsEdge:     a_HeightAmp = 0.1f;   a_MidPoint =  70; break;
+		case biExtremeHillsM:        a_HeightAmp = 0.045f; a_MidPoint =  75; break;
+		case biExtremeHillsPlus:     a_HeightAmp = 0.04f;  a_MidPoint =  80; break;
+		case biExtremeHillsPlusM:    a_HeightAmp = 0.04f;  a_MidPoint =  80; break;
+		case biFlowerForest:         a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biForest:               a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biForestHills:          a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		case biFrozenRiver:          a_HeightAmp = 0.4f;   a_MidPoint =  54; break;
+		case biFrozenOcean:          a_HeightAmp = 0.12f;  a_MidPoint =  45; break;
+		case biIceMountains:         a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		case biIcePlains:            a_HeightAmp = 0.3f;   a_MidPoint =  62; break;
+		case biIcePlainsSpikes:      a_HeightAmp = 0.3f;   a_MidPoint =  62; break;
+		case biJungle:               a_HeightAmp = 0.1f;   a_MidPoint =  63; break;
+		case biJungleEdge:           a_HeightAmp = 0.15f;  a_MidPoint =  62; break;
+		case biJungleEdgeM:          a_HeightAmp = 0.15f;  a_MidPoint =  62; break;
+		case biJungleHills:          a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		case biJungleM:              a_HeightAmp = 0.1f;   a_MidPoint =  63; break;
+		case biMegaSpruceTaiga:      a_HeightAmp = 0.09f;  a_MidPoint =  64; break;
+		case biMegaSpruceTaigaHills: a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		case biMegaTaiga:            a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biMegaTaigaHills:       a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		case biMesa:                 a_HeightAmp = 0.09f;  a_MidPoint =  61; break;
+		case biMesaBryce:            a_HeightAmp = 0.15f;  a_MidPoint =  61; break;
+		case biMesaPlateau:          a_HeightAmp = 0.25f;  a_MidPoint =  86; break;
+		case biMesaPlateauF:         a_HeightAmp = 0.25f;  a_MidPoint =  96; break;
+		case biMesaPlateauFM:        a_HeightAmp = 0.25f;  a_MidPoint =  96; break;
+		case biMesaPlateauM:         a_HeightAmp = 0.25f;  a_MidPoint =  86; break;
+		case biMushroomShore:        a_HeightAmp = 0.075f; a_MidPoint =  60; break;
+		case biMushroomIsland:       a_HeightAmp = 0.06f;  a_MidPoint =  80; break;
+		case biNether:               a_HeightAmp = 0.01f;  a_MidPoint =  64; break;
+		case biOcean:                a_HeightAmp = 0.12f;  a_MidPoint =  45; break;
+		case biPlains:               a_HeightAmp = 0.3f;   a_MidPoint =  62; break;
+		case biRiver:                a_HeightAmp = 0.4f;   a_MidPoint =  54; break;
+		case biRoofedForest:         a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biRoofedForestM:        a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biSavanna:              a_HeightAmp = 0.3f;   a_MidPoint =  62; break;
+		case biSavannaM:             a_HeightAmp = 0.3f;   a_MidPoint =  62; break;
+		case biSavannaPlateau:       a_HeightAmp = 0.3f;   a_MidPoint =  85; break;
+		case biSavannaPlateauM:      a_HeightAmp = 0.012f; a_MidPoint = 105; break;
+		case biStoneBeach:           a_HeightAmp = 0.075f; a_MidPoint =  60; break;
+		case biSunflowerPlains:      a_HeightAmp = 0.3f;   a_MidPoint =  62; break;
+		case biSwampland:            a_HeightAmp = 0.25f;  a_MidPoint =  59; break;
+		case biSwamplandM:           a_HeightAmp = 0.11f;  a_MidPoint =  59; break;
+		case biTaiga:                a_HeightAmp = 0.1f;   a_MidPoint =  64; break;
+		case biTaigaM:               a_HeightAmp = 0.1f;   a_MidPoint =  70; break;
+		case biTaigaHills:           a_HeightAmp = 0.075f; a_MidPoint =  68; break;
+		default:
+		{
+			// Make a crazy terrain so that it stands out
+			a_HeightAmp = 0.001f;
+			a_MidPoint = 90;
+			break;
+		}
+	}
+}
 
-	a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
 
-	// Make basic terrain composition:
+
+
+void cBiomalNoise3DComposable::GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape)
+{
+	GenerateNoiseArrayIfNeeded(a_ChunkX, a_ChunkZ);
+
+	// Translate the noise array into Shape:
 	for (int z = 0; z < cChunkDef::Width; z++)
 	{
 		for (int x = 0; x < cChunkDef::Width; x++)
 		{
-			int LastAir = a_ChunkDesc.GetHeight(x, z) + 1;
-			bool HasHadWater = false;
-			for (int y = LastAir; y < m_SeaLevel; y++)
+			for (int y = 0; y < cChunkDef::Height; y++)
 			{
-				a_ChunkDesc.SetBlockType(x, y, z, E_BLOCK_STATIONARY_WATER);
+				a_Shape[y + x * 256 + z * 256 * 16] = (m_NoiseArray[y + 257 * x + 257 * 17 * z] > m_AirThreshold) ? 0 : 1;
 			}
-			for (int y = LastAir - 1; y > 0; y--)
-			{
-				if (m_NoiseArray[x + 17 * z + 17 * 17 * y] > m_AirThreshold)
-				{
-					// "air" part
-					LastAir = y;
-					if (y < m_SeaLevel)
-					{
-						a_ChunkDesc.SetBlockType(x, y, z, E_BLOCK_STATIONARY_WATER);
-						HasHadWater = true;
-					}
-					continue;
-				}
-				// "ground" part:
-				if (LastAir - y > 4)
-				{
-					a_ChunkDesc.SetBlockType(x, y, z, E_BLOCK_STONE);
-					continue;
-				}
-				if (HasHadWater)
-				{
-					a_ChunkDesc.SetBlockType(x, y, z, E_BLOCK_SAND);
-				}
-				else
-				{
-					a_ChunkDesc.SetBlockType(x, y, z, (LastAir == y + 1) ? E_BLOCK_GRASS : E_BLOCK_DIRT);
-				}
-			}  // for y
-			a_ChunkDesc.SetBlockType(x, 0, z, E_BLOCK_BEDROCK);
 		}  // for x
 	}  // for z
 }
@@ -573,3 +810,4 @@ void cNoise3DComposable::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 
 
 
+
diff --git a/src/Generating/Noise3DGenerator.h b/src/Generating/Noise3DGenerator.h
index 42f61a854..35b1e4c94 100644
--- a/src/Generating/Noise3DGenerator.h
+++ b/src/Generating/Noise3DGenerator.h
@@ -1,7 +1,11 @@
 
 // Noise3DGenerator.h
 
-// Generates terrain using 3D noise, rather than composing. Is a test.
+// Declares cNoise3DGenerator and cNoise3DComposable classes, representing 3D-noise-based generators.
+// They generate terrain shape by combining a lerp of two 3D noises with a vertical linear gradient
+// cNoise3DGenerator is obsolete and unmaintained.
+// cNoise3DComposable is used to test parameter combinations for single-biome worlds.
+
 
 
 
@@ -9,7 +13,8 @@
 #pragma once
 
 #include "ComposableGenerator.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
+#include "../Noise/InterpolNoise.h"
 
 
 
@@ -30,17 +35,20 @@ public:
 	
 protected:
 	// Linear interpolation step sizes, must be divisors of cChunkDef::Width and cChunkDef::Height, respectively:
-	static const int UPSCALE_X = 8;
-	static const int UPSCALE_Y = 4;
-	static const int UPSCALE_Z = 8;
+	static const int UPSCALE_X = 4;
+	static const int UPSCALE_Y = 8;
+	static const int UPSCALE_Z = 4;
 	
 	// Linear interpolation buffer dimensions, calculated from the step sizes:
 	static const int DIM_X = 1 + cChunkDef::Width  / UPSCALE_X;
 	static const int DIM_Y = 1 + cChunkDef::Height / UPSCALE_Y;
 	static const int DIM_Z = 1 + cChunkDef::Width  / UPSCALE_Z;
 
-	cPerlinNoise m_Perlin;   // The base 3D noise source for the actual composition
-	cCubicNoise  m_Cubic;    // The noise used for heightmap directing
+	/** The base 3D noise source for the actual composition */
+	cOctavedNoise<cInterp5DegNoise> m_Perlin;
+
+	/** The noise used for heightmap directing. */
+	cOctavedNoise<cInterp5DegNoise> m_Cubic;
 	
 	int            m_SeaLevel;
 	NOISE_DATATYPE m_HeightAmplification;
@@ -65,8 +73,7 @@ protected:
 
 
 class cNoise3DComposable :
-	public cTerrainHeightGen,
-	public cTerrainCompositionGen
+	public cTerrainShapeGen
 {
 public:
 	cNoise3DComposable(int a_Seed);
@@ -74,31 +81,135 @@ public:
 	void Initialize(cIniFile & a_IniFile);
 
 protected:
-	cNoise m_Noise1;
-	cNoise m_Noise2;
-	cNoise m_Noise3;
+	/** The 3D noise that is used to choose between density noise A and B. */
+	cOctavedNoise<cInterpolNoise<Interp5Deg>> m_ChoiceNoise;
+
+	/** Density 3D noise, variant A. */
+	cOctavedNoise<cInterpolNoise<Interp5Deg>> m_DensityNoiseA;
+
+	/** Density 3D noise, variant B. */
+	cOctavedNoise<cInterpolNoise<Interp5Deg>> m_DensityNoiseB;
+
+	/** Heightmap-like noise used to provide variance for low-amplitude biomes. */
+	cOctavedNoise<cInterpolNoise<Interp5Deg>> m_BaseNoise;
 	
-	int            m_SeaLevel;
+	/** The main parameter of the generator, specifies the slope of the vertical linear gradient.
+	A higher value means a steeper slope and a smaller total amplitude of the generated terrain. */
 	NOISE_DATATYPE m_HeightAmplification;
-	NOISE_DATATYPE m_MidPoint;  // Where the vertical "center" of the noise should be
+
+	/** Where the vertical "center" of the noise should be, as block height. */
+	NOISE_DATATYPE m_MidPoint;
+
+	// Frequency of the 3D noise's first octave:
 	NOISE_DATATYPE m_FrequencyX;
 	NOISE_DATATYPE m_FrequencyY;
 	NOISE_DATATYPE m_FrequencyZ;
+
+	// Frequency of the base terrain noise:
+	NOISE_DATATYPE m_BaseFrequencyX;
+	NOISE_DATATYPE m_BaseFrequencyZ;
+
+	// Frequency of the choice noise:
+	NOISE_DATATYPE m_ChoiceFrequencyX;
+	NOISE_DATATYPE m_ChoiceFrequencyY;
+	NOISE_DATATYPE m_ChoiceFrequencyZ;
+
+	// Threshold for when the values are considered air:
 	NOISE_DATATYPE m_AirThreshold;
 	
+	// Cache for the last calculated chunk (reused between heightmap and composition queries):
 	int m_LastChunkX;
 	int m_LastChunkZ;
 	NOISE_DATATYPE m_NoiseArray[17 * 17 * 257];  // x + 17 * z + 17 * 17 * y
 	
 	
-	/// Generates the 3D noise array used for terrain generation, unless the LastChunk coords are equal to coords given
+	/** Generates the 3D noise array used for terrain generation (m_NoiseArray), unless the LastChunk coords are equal to coords given */
 	void GenerateNoiseArrayIfNeeded(int a_ChunkX, int a_ChunkZ);
 	
 	// cTerrainHeightGen overrides:
-	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
+	virtual void GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape) override;
+	virtual void InitializeShapeGen(cIniFile & a_IniFile) override { Initialize(a_IniFile); }
+} ;
+
+
+
+
+
+class cBiomalNoise3DComposable :
+	public cTerrainShapeGen
+{
+public:
+	cBiomalNoise3DComposable(int a_Seed, cBiomeGenPtr a_BiomeGen);
+
+	void Initialize(cIniFile & a_IniFile);
+
+protected:
+	/** Number of columns around the pixel to query for biomes for averaging. Must be less than or equal to 16. */
+	static const int AVERAGING_SIZE = 9;
+
+	/** Type used for a single parameter across the entire (downscaled) chunk. */
+	typedef NOISE_DATATYPE ChunkParam[5 * 5];
 
-	// cTerrainCompositionGen overrides:
-	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
+
+	/** The noise that is used to choose between density noise A and B. */
+	cOctavedNoise<cInterpolNoise<Interp5Deg>> m_ChoiceNoise;
+
+	/** Density 3D noise, variant A. */
+	cOctavedNoise<cInterpolNoise<Interp5Deg>> m_DensityNoiseA;
+
+	/** Density 3D noise, variant B. */
+	cOctavedNoise<cInterpolNoise<Interp5Deg>> m_DensityNoiseB;
+
+	/** Heightmap-like noise used to provide variance for low-amplitude biomes. */
+	cOctavedNoise<cInterpolNoise<Interp5Deg>> m_BaseNoise;
+
+	/** The underlying biome generator. */
+	cBiomeGenPtr m_BiomeGen;
+	
+	/** Block height of the sealevel, used for composing the terrain. */
+	int m_SeaLevel;
+
+	// Frequency of the 3D noise's first octave:
+	NOISE_DATATYPE m_FrequencyX;
+	NOISE_DATATYPE m_FrequencyY;
+	NOISE_DATATYPE m_FrequencyZ;
+
+	// Frequency of the base terrain noise:
+	NOISE_DATATYPE m_BaseFrequencyX;
+	NOISE_DATATYPE m_BaseFrequencyZ;
+
+	// Frequency of the choice noise:
+	NOISE_DATATYPE m_ChoiceFrequencyX;
+	NOISE_DATATYPE m_ChoiceFrequencyY;
+	NOISE_DATATYPE m_ChoiceFrequencyZ;
+
+	// Threshold for when the values are considered air:
+	NOISE_DATATYPE m_AirThreshold;
+	
+	// Cache for the last calculated chunk (reused between heightmap and composition queries):
+	int m_LastChunkX;
+	int m_LastChunkZ;
+	NOISE_DATATYPE m_NoiseArray[17 * 17 * 257];  // 257 * x + y + 257 * 17 * z
+
+	/** Weights for summing up neighboring biomes. */
+	NOISE_DATATYPE m_Weight[AVERAGING_SIZE * 2 + 1][AVERAGING_SIZE * 2 + 1];
+
+	/** The sum of m_Weight[]. */
+	NOISE_DATATYPE m_WeightSum;
+	
+	
+	/** Generates the 3D noise array used for terrain generation (m_NoiseArray), unless the LastChunk coords are equal to coords given */
+	void GenerateNoiseArrayIfNeeded(int a_ChunkX, int a_ChunkZ);
+
+	/** Calculates the biome-related parameters for the chunk. */
+	void CalcBiomeParamArrays(int a_ChunkX, int a_ChunkZ, ChunkParam & a_HeightAmp, ChunkParam & a_MidPoint);
+
+	/** Returns the parameters for the specified biome. */
+	void GetBiomeParams(EMCSBiome a_Biome, NOISE_DATATYPE & a_HeightAmp, NOISE_DATATYPE & a_MidPoint);
+	
+	// cTerrainShapeGen overrides:
+	virtual void GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape) override;
+	virtual void InitializeShapeGen(cIniFile & a_IniFile) override { Initialize(a_IniFile); }
 } ;
 
 
diff --git a/src/Generating/PieceGenerator.h b/src/Generating/PieceGenerator.h
index f06029280..43ffed7a2 100644
--- a/src/Generating/PieceGenerator.h
+++ b/src/Generating/PieceGenerator.h
@@ -20,7 +20,7 @@ Each uses a slightly different approach to generating:
 
 #include "../Defines.h"
 #include "../Cuboid.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
 
 
 
diff --git a/src/Generating/Ravines.h b/src/Generating/Ravines.h
index 3e41c5ce6..b11037433 100644
--- a/src/Generating/Ravines.h
+++ b/src/Generating/Ravines.h
@@ -10,7 +10,6 @@
 #pragma once
 
 #include "GridStructGen.h"
-#include "../Noise.h"
 
 
 
diff --git a/src/Generating/ShapeGen.cpp b/src/Generating/ShapeGen.cpp
new file mode 100644
index 000000000..45a9c3b93
--- /dev/null
+++ b/src/Generating/ShapeGen.cpp
@@ -0,0 +1,145 @@
+
+// ShapeGen.cpp
+
+// Implements the function to create a cTerrainShapeGen descendant based on INI file settings
+
+#include "Globals.h"
+#include "HeiGen.h"
+#include "../IniFile.h"
+#include "DistortedHeightmap.h"
+#include "EndGen.h"
+#include "Noise3DGenerator.h"
+#include "TwoHeights.h"
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cTerrainHeightToShapeGen:
+
+/** Converts old-style height-generators into new-style shape-generators. */
+class cTerrainHeightToShapeGen:
+	public cTerrainShapeGen
+{
+public:
+	cTerrainHeightToShapeGen(cTerrainHeightGenPtr a_HeightGen):
+		m_HeightGen(a_HeightGen)
+	{
+	}
+
+
+	// cTerrainShapeGen overrides:
+	virtual void GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape) override
+	{
+		// Generate the heightmap:
+		cChunkDef::HeightMap heightMap;
+		m_HeightGen->GenHeightMap(a_ChunkX, a_ChunkZ, heightMap);
+
+		// Convert from heightmap to shape:
+		for (int z = 0; z < cChunkDef::Width; z++)
+		{
+			for (int x = 0; x < cChunkDef::Width; x++)
+			{
+				HEIGHTTYPE height = cChunkDef::GetHeight(heightMap, x, z) + 1;
+				Byte * shapeColumn = &(a_Shape[(x + 16 * z) * 256]);
+				for (int y = 0; y < height; y++)
+				{
+					shapeColumn[y] = 1;
+				}
+				for (int y = height; y < cChunkDef::Height; y++)
+				{
+					shapeColumn[y] = 0;
+				}
+			}  // for x
+		}  // for z
+	}
+
+
+	virtual void InitializeShapeGen(cIniFile & a_IniFile) override
+	{
+		m_HeightGen->InitializeHeightGen(a_IniFile);
+	}
+
+protected:
+	/** The height generator being converted. */
+	cTerrainHeightGenPtr m_HeightGen;
+};
+
+typedef SharedPtr<cTerrainHeightToShapeGen> cTerrainHeightToShapeGenPtr;
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cTerrainShapeGen:
+
+cTerrainShapeGenPtr cTerrainShapeGen::CreateShapeGen(cIniFile & a_IniFile, cBiomeGenPtr a_BiomeGen, int a_Seed, bool & a_CacheOffByDefault)
+{
+	AString shapeGenName = a_IniFile.GetValueSet("Generator", "ShapeGen", "");
+	if (shapeGenName.empty())
+	{
+		LOGWARN("[Generator] ShapeGen value not set in world.ini, using \"BiomalNoise3D\".");
+		shapeGenName = "BiomalNoise3D";
+	}
+	
+	// If the shapegen is HeightMap, redirect to older HeightMap-based generators:
+	if (NoCaseCompare(shapeGenName, "HeightMap") == 0)
+	{
+		cTerrainHeightGenPtr heightGen = cTerrainHeightGen::CreateHeightGen(a_IniFile, a_BiomeGen, a_Seed, a_CacheOffByDefault);
+		if (heightGen != nullptr)
+		{
+			return std::make_shared<cTerrainHeightToShapeGen>(heightGen);
+		}
+
+		// The height gen was not recognized; several heightgens were promoted to shape gens, so let's try them instead:
+		shapeGenName = a_IniFile.GetValue("Generator", "HeightGen", "");
+		if (shapeGenName.empty())
+		{
+			LOGWARNING("[Generator] ShapeGen set to HeightMap, but HeightGen not set. Reverting to \"BiomalNoise3D\".");
+			shapeGenName = "BiomalNoise3D";
+			a_IniFile.SetValue("Generator", "ShapeGen", shapeGenName);
+		}
+	}
+
+	// Choose the shape generator based on the name:
+	a_CacheOffByDefault = false;
+	cTerrainShapeGenPtr res;
+	if (NoCaseCompare(shapeGenName, "DistortedHeightmap") == 0)
+	{
+		res = std::make_shared<cDistortedHeightmap>(a_Seed, a_BiomeGen);
+	}
+	else if (NoCaseCompare(shapeGenName, "End") == 0)
+	{
+		res = std::make_shared<cEndGen>(a_Seed);
+	}
+	else if (NoCaseCompare(shapeGenName, "BiomalNoise3D") == 0)
+	{
+		res = std::make_shared<cBiomalNoise3DComposable>(a_Seed, a_BiomeGen);
+	}
+	else if (NoCaseCompare(shapeGenName, "Noise3D") == 0)
+	{
+		res = std::make_shared<cNoise3DComposable>(a_Seed);
+	}
+	else if (NoCaseCompare(shapeGenName, "TwoHeights") == 0)
+	{
+		res = CreateShapeGenTwoHeights(a_Seed, a_BiomeGen);
+	}
+	else
+	{
+		// No match found, force-set the default and retry
+		LOGWARN("Unknown ShapeGen \"%s\", using \"BiomalNoise3D\" instead.", shapeGenName.c_str());
+		a_IniFile.SetValue("Generator", "ShapeGen", "BiomalNoise3D");
+		return CreateShapeGen(a_IniFile, a_BiomeGen, a_Seed, a_CacheOffByDefault);
+	}
+	
+	// Read the settings:
+	res->InitializeShapeGen(a_IniFile);
+	
+	return res;
+}
+
+
+
+
diff --git a/src/Generating/StructGen.cpp b/src/Generating/StructGen.cpp
index bdefcd8c1..2f685c808 100644
--- a/src/Generating/StructGen.cpp
+++ b/src/Generating/StructGen.cpp
@@ -37,10 +37,13 @@ void cStructGenTrees::GenFinish(cChunkDesc & a_ChunkDesc)
 				Dest = &WorkerDesc;
 				WorkerDesc.SetChunkCoords(BaseX, BaseZ);
 				
+				// TODO: This may cause a lot of wasted calculations, instead of pulling data out of a single (cChunkDesc) cache
+
+				cChunkDesc::Shape workerShape;
 				m_BiomeGen->GenBiomes           (BaseX, BaseZ, WorkerDesc.GetBiomeMap());
-				m_HeightGen->GenHeightMap       (BaseX, BaseZ, WorkerDesc.GetHeightMap());
-				m_CompositionGen->ComposeTerrain(WorkerDesc);
-				// TODO: Free the entity lists
+				m_ShapeGen->GenShape            (BaseX, BaseZ, workerShape);
+				WorkerDesc.SetHeightFromShape   (workerShape);
+				m_CompositionGen->ComposeTerrain(WorkerDesc, workerShape);
 			}
 			else
 			{
@@ -97,7 +100,7 @@ void cStructGenTrees::GenerateSingleTree(
 	
 	int Height = a_ChunkDesc.GetHeight(x, z);
 	
-	if ((Height <= 0) || (Height > 240))
+	if ((Height <= 0) || (Height >= 230))
 	{
 		return;
 	}
@@ -125,6 +128,11 @@ void cStructGenTrees::GenerateSingleTree(
 			// Outside the chunk
 			continue;
 		}
+		if (itr->y >= cChunkDef::Height)
+		{
+			// Above the chunk, cut off (this shouldn't happen too often, we're limiting trees to y < 230)
+			continue;
+		}
 
 		BLOCKTYPE Block = a_ChunkDesc.GetBlockType(itr->x, itr->y, itr->z);
 		switch (Block)
@@ -159,7 +167,7 @@ void cStructGenTrees::ApplyTreeImage(
 	// Put the generated image into a_BlockTypes, push things outside this chunk into a_Blocks
 	for (sSetBlockVector::const_iterator itr = a_Image.begin(), end = a_Image.end(); itr != end; ++itr)
 	{
-		if ((itr->ChunkX == a_ChunkX) && (itr->ChunkZ == a_ChunkZ))
+		if ((itr->ChunkX == a_ChunkX) && (itr->ChunkZ == a_ChunkZ) && (itr->y < cChunkDef::Height))
 		{
 			// Inside this chunk, integrate into a_ChunkDesc:
 			switch (a_ChunkDesc.GetBlockType(itr->x, itr->y, itr->z))
@@ -390,7 +398,7 @@ void cStructGenLakes::GenFinish(cChunkDesc & a_ChunkDesc)
 		}
 		
 		cBlockArea Lake;
-		CreateLakeImage(ChunkX + x, ChunkZ + z, Lake);
+		CreateLakeImage(ChunkX + x, ChunkZ + z, a_ChunkDesc.GetMinHeight(), Lake);
 		
 		int OfsX = Lake.GetOriginX() + x * cChunkDef::Width;
 		int OfsZ = Lake.GetOriginZ() + z * cChunkDef::Width;
@@ -404,25 +412,13 @@ void cStructGenLakes::GenFinish(cChunkDesc & a_ChunkDesc)
 
 
 
-void cStructGenLakes::CreateLakeImage(int a_ChunkX, int a_ChunkZ, cBlockArea & a_Lake)
+void cStructGenLakes::CreateLakeImage(int a_ChunkX, int a_ChunkZ, int a_MaxLakeHeight, cBlockArea & a_Lake)
 {
 	a_Lake.Create(16, 8, 16);
 	a_Lake.Fill(cBlockArea::baTypes, E_BLOCK_SPONGE);  // Sponge is the NOP blocktype for lake merging strategy
 	
-	// Find the minimum height in this chunk:
-	cChunkDef::HeightMap HeightMap;
-	m_HeiGen->GenHeightMap(a_ChunkX, a_ChunkZ, HeightMap);
-	HEIGHTTYPE MinHeight = HeightMap[0];
-	for (size_t i = 1; i < ARRAYCOUNT(HeightMap); i++)
-	{
-		if (HeightMap[i] < MinHeight)
-		{
-			MinHeight = HeightMap[i];
-		}
-	}
-	
 	// Make a random position in the chunk by using a random 16 block XZ offset and random height up to chunk's max height minus 6
-	MinHeight = std::max(MinHeight - 6, 2);
+	int MinHeight = std::max(a_MaxLakeHeight - 6, 2);
 	int Rnd = m_Noise.IntNoise3DInt(a_ChunkX, 128, a_ChunkZ) / 11;
 	// Random offset [-8 .. 8], with higher probability around 0; add up four three-bit-wide randoms [0 .. 28], divide and subtract to get range
 	int OffsetX = 4 * ((Rnd & 0x07) + ((Rnd & 0x38) >> 3) + ((Rnd & 0x1c0) >> 6) + ((Rnd & 0xe00) >> 9)) / 7 - 8;
diff --git a/src/Generating/StructGen.h b/src/Generating/StructGen.h
index 906fdd722..796abf0f5 100644
--- a/src/Generating/StructGen.h
+++ b/src/Generating/StructGen.h
@@ -14,7 +14,7 @@
 #pragma once
 
 #include "ComposableGenerator.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
 
 
 
@@ -24,11 +24,11 @@ class cStructGenTrees :
 	public cFinishGen
 {
 public:
-	cStructGenTrees(int a_Seed, cBiomeGenPtr a_BiomeGen, cTerrainHeightGenPtr a_HeightGen, cTerrainCompositionGenPtr a_CompositionGen) :
+	cStructGenTrees(int a_Seed, cBiomeGenPtr a_BiomeGen, cTerrainShapeGenPtr a_ShapeGen, cTerrainCompositionGenPtr a_CompositionGen) :
 		m_Seed(a_Seed),
 		m_Noise(a_Seed),
 		m_BiomeGen(a_BiomeGen),
-		m_HeightGen(a_HeightGen),
+		m_ShapeGen(a_ShapeGen),
 		m_CompositionGen(a_CompositionGen)
 	{}
 	
@@ -37,12 +37,12 @@ protected:
 	int m_Seed;
 	cNoise m_Noise;
 	cBiomeGenPtr              m_BiomeGen;
-	cTerrainHeightGenPtr      m_HeightGen;
+	cTerrainShapeGenPtr       m_ShapeGen;
 	cTerrainCompositionGenPtr m_CompositionGen;
 	
 	/** Generates and applies an image of a single tree.
-	Parts of the tree inside the chunk are applied to a_BlockX.
-	Parts of the tree outside the chunk are stored in a_OutsideX
+	Parts of the tree inside the chunk are applied to a_ChunkDesc.
+	Parts of the tree outside the chunk are stored in a_OutsideXYZ
 	*/
 	void GenerateSingleTree(
 		int a_ChunkX, int a_ChunkZ, int a_Seq,
@@ -51,7 +51,7 @@ protected:
 		sSetBlockVector & a_OutsideOther
 	) ;
 	
-	/// Applies an image into chunk blockdata; all blocks outside the chunk will be appended to a_Overflow
+	/** Applies an image into chunk blockdata; all blocks outside the chunk will be appended to a_Overflow. */
 	void ApplyTreeImage(
 		int a_ChunkX, int a_ChunkZ,
 		cChunkDesc & a_ChunkDesc,
@@ -124,27 +124,30 @@ class cStructGenLakes :
 	public cFinishGen
 {
 public:
-	cStructGenLakes(int a_Seed, BLOCKTYPE a_Fluid, cTerrainHeightGenPtr a_HeiGen, int a_Probability) :
+	cStructGenLakes(int a_Seed, BLOCKTYPE a_Fluid, cTerrainShapeGenPtr a_ShapeGen, int a_Probability) :
 		m_Noise(a_Seed),
 		m_Seed(a_Seed),
 		m_Fluid(a_Fluid),
-		m_HeiGen(a_HeiGen),
+		m_ShapeGen(a_ShapeGen),
 		m_Probability(a_Probability)
 	{
 	}
 	
 protected:
-	cNoise               m_Noise;
-	int                  m_Seed;
-	BLOCKTYPE            m_Fluid;
-	cTerrainHeightGenPtr m_HeiGen;
-	int                  m_Probability;  ///< Chance, 0 .. 100, of a chunk having the lake
+	cNoise              m_Noise;
+	int                 m_Seed;
+	BLOCKTYPE           m_Fluid;
+	cTerrainShapeGenPtr m_ShapeGen;
+
+	/** Chance, [0 .. 100], of a chunk having the lake. */
+	int m_Probability;
 	
+
 	// cFinishGen override:
 	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 	
-	/// Creates a lake image for the specified chunk into a_Lake
-	void CreateLakeImage(int a_ChunkX, int a_ChunkZ, cBlockArea & a_Lake);
+	/** Creates a lake image for the specified chunk into a_Lake. */
+	void CreateLakeImage(int a_ChunkX, int a_ChunkZ, int a_MaxLakeHeight, cBlockArea & a_Lake);
 } ;
 
 
diff --git a/src/Generating/Trees.cpp b/src/Generating/Trees.cpp
index 7fd6d6f07..be8b0cd6b 100644
--- a/src/Generating/Trees.cpp
+++ b/src/Generating/Trees.cpp
@@ -61,7 +61,7 @@ static const sCoords BigO3[] =
 
 static const sCoords BigO4[] =  // Part of Big Jungle tree
 {
-	/* -4 */                    {-2, -4}, {-1, -4}, {0, -4}, {1, -4}, {2, -4},
+	/* -4 */                     {-2, -4}, {-1, -4}, {0, -4}, {1, -4}, {2, -4},
 	/* -3 */           {-3, -3}, {-2, -3}, {-1, -3}, {0, -3}, {1, -3}, {2, -3}, {3, -3},
 	/* -2 */ {-4, -2}, {-3, -2}, {-2, -2}, {-1, -2}, {0, -2}, {1, -2}, {2, -2}, {3, -2}, {4, -2},
 	/* -1 */ {-4, -1}, {-3, -1}, {-2, -1}, {-1, -1}, {0, -1}, {1, -1}, {2, -1}, {3, -1}, {4, -1},
@@ -361,7 +361,109 @@ void GetSmallAppleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a
 
 void GetLargeAppleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
 {
-	// TODO
+	int Height = 7 + a_Noise.IntNoise3DInt(a_BlockX, a_BlockY, a_BlockZ) % 4;
+
+	// Array with possible directions for a branch to go to.
+	const Vector3d AvailableDirections[] =
+	{
+		{ -1, 0, 0 }, { 0, 0, -1  },
+		{ -1, 0, 1 }, { -1, 0, -1 },
+		{ 1, 0, 1  }, { 1, 0, -1  },
+		{ 1, 0, 0  }, { 0, 0, 1   },
+
+		{ -0.5, 0, 0   }, { 0, 0, -0.5    },
+		{ -0.5, 0, 0.5 }, { -0.5, 0, -0.5 },
+		{ 0.5, 0, 0.5  }, { 0.5, 0, -0.5  },
+		{ 0.5, 0, 0    }, { 0, 0, 0.5     },
+
+		{ -1, 0.5, 0 }, { 0, 0.5, -1  },
+		{ -1, 0.5, 1 }, { -1, 0.5, -1 },
+		{ 1, 0.5, 1  }, { 1, 0.5, -1  },
+		{ 1, 0.5, 0  }, { 0, 0.5, 1   },
+
+		{ -0.5, 0.5, 0   },  { 0, 0.5, -0.5    },
+		{ -0.5, 0.5, 0.5 },  { -0.5, 0.5, -0.5 },
+		{ 0.5, 0.5, 0.5  },  { 0.5, 0.5, -0.5  },
+		{ 0.5, 0.5, 0    },  { 0, 0.5, 0.5     },
+
+	};
+
+	// Create branches
+	for (int i = 4; i < Height; i++)
+	{
+		// Get a direction for the trunk to go to.
+		Vector3d BranchStartDirection = AvailableDirections[a_Noise.IntNoise3DInt(a_BlockX, a_BlockY + i, a_BlockZ) % ARRAYCOUNT(AvailableDirections)];
+		Vector3d BranchDirection = AvailableDirections[a_Noise.IntNoise3DInt(a_BlockX, a_BlockY / i, a_BlockZ) % ARRAYCOUNT(AvailableDirections)] / 3;
+
+		int BranchLength = 2 + a_Noise.IntNoise3DInt(a_BlockX * a_Seq, a_BlockY * a_Seq, a_BlockZ * a_Seq) % 3;
+		GetLargeAppleTreeBranch(a_BlockX, a_BlockY + i, a_BlockZ, BranchLength, BranchStartDirection, BranchDirection, a_BlockY + Height, a_Noise, a_LogBlocks);
+	}
+
+	// Place leaves around each log block
+	for (auto itr : a_LogBlocks)
+	{
+		// Get the log's X and Z coordinates
+		int X = itr.ChunkX * 16 + itr.x;
+		int Z = itr.ChunkZ * 16 + itr.z;
+
+		a_OtherBlocks.push_back(sSetBlock(X, itr.y - 2, Z, E_BLOCK_LEAVES, E_META_LEAVES_APPLE));
+		PushCoordBlocks(X, itr.y - 2, Z, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		for (int y = -1; y <= 1; y++)
+		{
+			PushCoordBlocks (X, itr.y + y, Z, a_OtherBlocks, BigO2, ARRAYCOUNT(BigO2), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		}
+		PushCoordBlocks(X, itr.y + 2, Z, a_OtherBlocks, BigO1, ARRAYCOUNT(BigO1), E_BLOCK_LEAVES, E_META_LEAVES_APPLE);
+		a_OtherBlocks.push_back(sSetBlock(X, itr.y + 2, Z, E_BLOCK_LEAVES, E_META_LEAVES_APPLE));
+	}
+
+	// Trunk:
+	for (int i = 0; i < Height; i++)
+	{
+		a_LogBlocks.push_back(sSetBlock(a_BlockX, a_BlockY + i, a_BlockZ, E_BLOCK_LOG, E_META_LOG_APPLE));
+	}
+}
+
+
+
+
+
+void GetLargeAppleTreeBranch(int a_BlockX, int a_BlockY, int a_BlockZ, int a_BranchLength, Vector3d a_StartDirection, Vector3d a_Direction, int a_TreeHeight, cNoise & a_Noise, sSetBlockVector & a_LogBlocks)
+{
+	Vector3d CurrentPos = Vector3d(a_BlockX, a_BlockY, a_BlockZ);
+	Vector3d Direction  = a_StartDirection;
+	for (int i = 0; i < a_BranchLength; i++)
+	{
+		CurrentPos += Direction;
+		if (CurrentPos.y >= a_TreeHeight)
+		{
+			return;
+		}
+		Direction -= a_Direction;
+		Direction.clamp(-1.0, 1.0);
+		a_LogBlocks.push_back(sSetBlock(FloorC(CurrentPos.x), FloorC(CurrentPos.y), FloorC(CurrentPos.z), E_BLOCK_LOG, GetLogMetaFromDirection(E_META_LOG_APPLE, Direction)));
+	}
+}
+
+
+
+
+
+NIBBLETYPE GetLogMetaFromDirection(NIBBLETYPE a_BlockMeta, Vector3d a_Direction)
+{
+	a_Direction.abs();
+
+	if ((a_Direction.y > a_Direction.x) && (a_Direction.y > a_Direction.z))
+	{
+		return a_BlockMeta;
+	}
+	else if (a_Direction.x > a_Direction.z)
+	{
+		return a_BlockMeta + 4;
+	}
+	else
+	{
+		return a_BlockMeta + 8;
+	}
 }
 
 
diff --git a/src/Generating/Trees.h b/src/Generating/Trees.h
index c9eb7de80..a2c8274f5 100644
--- a/src/Generating/Trees.h
+++ b/src/Generating/Trees.h
@@ -18,7 +18,7 @@ logs can overwrite others(leaves), but others shouldn't overwrite logs. This is
 #pragma once
 
 #include "../ChunkDef.h"
-#include "../Noise.h"
+#include "../Noise/Noise.h"
 
 
 
@@ -62,6 +62,12 @@ void GetSmallAppleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a
 /// Generates an image of a large (branching) apple tree
 void GetLargeAppleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);
 
+/// Generates a branch for a large apple tree
+void GetLargeAppleTreeBranch(int a_BlockX, int a_BlockY, int a_BlockZ, int a_BranchLength, Vector3d a_StartDirection, Vector3d a_Direction, int a_TreeHeight, cNoise & a_Noise, sSetBlockVector & a_LogBlocks);
+
+/// Returns the meta for a log from the given direction
+NIBBLETYPE GetLogMetaFromDirection(NIBBLETYPE a_BlockMeta, Vector3d a_Direction);
+
 /// Generates an image of a random birch tree
 void GetBirchTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);
 
diff --git a/src/Generating/TwoHeights.cpp b/src/Generating/TwoHeights.cpp
new file mode 100644
index 000000000..e75c301de
--- /dev/null
+++ b/src/Generating/TwoHeights.cpp
@@ -0,0 +1,121 @@
+
+// TwoHeights.cpp
+
+// Implements the cTwoHeights class representing the terrain shape generator using two switched heightmaps
+
+#include "Globals.h"
+#include "TwoHeights.h"
+#include "../Noise/InterpolNoise.h"
+#include "HeiGen.h"
+#include "../LinearUpscale.h"
+#include "../IniFile.h"
+
+
+
+
+
+class cTwoHeights:
+	public cTerrainShapeGen
+{
+	typedef cTerrainShapeGen super;
+public:
+	cTwoHeights(int a_Seed, cBiomeGenPtr a_BiomeGen):
+		m_Seed(a_Seed),
+		m_Choice(a_Seed),
+		m_HeightA(a_Seed + 1, a_BiomeGen),
+		m_HeightB(a_Seed + 2, a_BiomeGen)
+	{
+	}
+
+
+	// cTerrainShapeGen override:
+	virtual void GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape) override
+	{
+		// Generate the two heightmaps:
+		cChunkDef::HeightMap heightsA;
+		cChunkDef::HeightMap heightsB;
+		m_HeightA.GenHeightMap(a_ChunkX, a_ChunkZ, heightsA);
+		m_HeightB.GenHeightMap(a_ChunkX, a_ChunkZ, heightsB);
+
+		// Generate the choice noise:
+		NOISE_DATATYPE smallChoice[33 * 5 * 5];
+		NOISE_DATATYPE workspace[33 * 5 * 5];
+		NOISE_DATATYPE startX = 0;
+		NOISE_DATATYPE endX = 256 * m_FrequencyY;
+		NOISE_DATATYPE startY =  a_ChunkX * cChunkDef::Width * m_FrequencyX;
+		NOISE_DATATYPE endY   = (a_ChunkX * cChunkDef::Width + cChunkDef::Width + 1) * m_FrequencyX;
+		NOISE_DATATYPE startZ =  a_ChunkZ * cChunkDef::Width * m_FrequencyZ;
+		NOISE_DATATYPE endZ   = (a_ChunkZ * cChunkDef::Width + cChunkDef::Width + 1) * m_FrequencyZ;
+		m_Choice.Generate3D(smallChoice, 33, 5, 5, startX, endX, startY, endY, startZ, endZ, workspace);
+		NOISE_DATATYPE choice[257 * 17 * 17];
+		LinearUpscale3DArray(smallChoice, 33, 5, 5, choice, 8, 4, 4);
+
+		// Generate the shape:
+		int idxShape = 0;
+		for (int z = 0; z < cChunkDef::Width; z++)
+		{
+			for (int x = 0; x < cChunkDef::Width; x++)
+			{
+				int idxChoice = 257 * 17 * z + 257 * x;
+				NOISE_DATATYPE heightA = static_cast<NOISE_DATATYPE>(cChunkDef::GetHeight(heightsA, x, z));
+				NOISE_DATATYPE heightB = static_cast<NOISE_DATATYPE>(cChunkDef::GetHeight(heightsB, x, z));
+				for (int y = 0; y < cChunkDef::Height; y++)
+				{
+					int height = static_cast<int>(ClampedLerp(heightA, heightB, choice[idxChoice++]));
+					a_Shape[idxShape++] = (y < height) ? 1 : 0;
+				}
+			}  // for x
+		}  // for z
+	}
+
+
+	virtual void InitializeShapeGen(cIniFile & a_IniFile)
+	{
+		m_FrequencyX = static_cast<NOISE_DATATYPE>(a_IniFile.GetValueSetF("Generator", "TwoHeightsFrequencyX", 40));
+		m_FrequencyY = static_cast<NOISE_DATATYPE>(a_IniFile.GetValueSetF("Generator", "TwoHeightsFrequencyY", 40));
+		m_FrequencyZ = static_cast<NOISE_DATATYPE>(a_IniFile.GetValueSetF("Generator", "TwoHeightsFrequencyZ", 40));
+
+		// Initialize the two underlying height generators from an empty INI file:
+		cIniFile empty;
+		m_HeightA.InitializeHeightGen(empty);
+		m_HeightB.InitializeHeightGen(empty);
+
+		// Add the choice octaves:
+		NOISE_DATATYPE freq = 0.001f;
+		NOISE_DATATYPE ampl = 1;
+		for (int i = 0; i < 4; i++)
+		{
+			m_Choice.AddOctave(freq, ampl);
+			freq = freq * 2;
+			ampl = ampl / 2;
+		}
+	}
+
+protected:
+	int m_Seed;
+
+	/** The noise used to decide between the two heightmaps. */
+	cOctavedNoise<cInterpolNoise<Interp5Deg>> m_Choice;
+
+	/** The first height generator. */
+	cHeiGenBiomal m_HeightA;
+
+	/** The second height generator. */
+	cHeiGenBiomal m_HeightB;
+
+	/** The base frequencies for m_Choice in each of the world axis directions. */
+	NOISE_DATATYPE m_FrequencyX, m_FrequencyY, m_FrequencyZ;
+};
+
+
+
+
+
+cTerrainShapeGenPtr CreateShapeGenTwoHeights(int a_Seed, cBiomeGenPtr a_BiomeGen)
+{
+	return std::make_shared<cTwoHeights>(a_Seed, a_BiomeGen);
+}
+
+
+
+
diff --git a/src/Generating/TwoHeights.h b/src/Generating/TwoHeights.h
new file mode 100644
index 000000000..353598011
--- /dev/null
+++ b/src/Generating/TwoHeights.h
@@ -0,0 +1,23 @@
+
+// TwoHeights.h
+
+// Declares the function to create a new instance of the cTwoHeights terrain shape generator
+
+
+
+
+
+#pragma once
+
+#include "ComposableGenerator.h"
+
+
+
+
+/** Creates and returns a new instance of the cTwoHeights terrain shape generator.
+The instance must be Initialize()-d before it is used. */
+extern cTerrainShapeGenPtr CreateShapeGenTwoHeights(int a_Seed, cBiomeGenPtr a_BiomeGen);
+
+
+
+
diff --git a/src/Generating/VillageGen.cpp b/src/Generating/VillageGen.cpp
index a9b359b6a..f7d9a8316 100644
--- a/src/Generating/VillageGen.cpp
+++ b/src/Generating/VillageGen.cpp
@@ -18,8 +18,8 @@
 
 /*
 How village generating works:
-By descending from a cGridStructGen, a semi-random grid is generated. A village may be generated for each of
-the grid's cells. Each cell checks the biomes in an entire chunk around it, only generating a village if all
+By descending from a cGridStructGen, a semi-random (jitter) grid is generated. A village may be generated for each
+of the grid's cells. Each cell checks the biomes in an entire chunk around it, only generating a village if all
 biomes are village-friendly. If yes, the entire village structure is built for that cell. If not, the cell
 is left village-less.
 
@@ -125,7 +125,7 @@ public:
 		m_Noise(a_Seed),
 		m_MaxSize(a_MaxSize),
 		m_Density(a_Density),
-		m_Borders(a_OriginX - a_MaxSize, 0, a_OriginZ - a_MaxSize, a_OriginX + a_MaxSize, 255, a_OriginZ + a_MaxSize),
+		m_Borders(a_OriginX - a_MaxSize, 0, a_OriginZ - a_MaxSize, a_OriginX + a_MaxSize, cChunkDef::Height - 1, a_OriginZ + a_MaxSize),
 		m_Prefabs(a_Prefabs),
 		m_HeightGen(a_HeightGen),
 		m_RoadBlock(a_RoadBlock),
diff --git a/src/Globals.h b/src/Globals.h
index eb59f499e..61f500db9 100644
--- a/src/Globals.h
+++ b/src/Globals.h
@@ -184,9 +184,9 @@ template class SizeChecker<UInt16, 2>;
 
 // OS-dependent stuff:
 #ifdef _WIN32
-	#define WIN32_LEAN_AND_MEAN
 
-	#define _WIN32_WINNT 0x501  // We want to target WinXP and higher
+	#define WIN32_LEAN_AND_MEAN
+	#define _WIN32_WINNT _WIN32_WINNT_WS03  // We want to target Windows XP with Service Pack 2 & Windows Server 2003 with Service Pack 1 and higher
 
 	#include <Windows.h>
 	#include <winsock2.h>
@@ -241,6 +241,7 @@ template class SizeChecker<UInt16, 2>;
 
 
 // STL stuff:
+#include <chrono>
 #include <vector>
 #include <list>
 #include <deque>
@@ -259,13 +260,12 @@ template class SizeChecker<UInt16, 2>;
 #ifndef TEST_GLOBALS
 	// Common headers (part 1, without macros):
 	#include "StringUtils.h"
-	#include "OSSupport/Sleep.h"
 	#include "OSSupport/CriticalSection.h"
 	#include "OSSupport/Semaphore.h"
 	#include "OSSupport/Event.h"
-	#include "OSSupport/Thread.h"
 	#include "OSSupport/File.h"
 	#include "Logger.h"
+	#include "OSSupport/StackTrace.h"
 #else
 	// Logging functions
 void inline LOGERROR(const char* a_Format, ...) FORMATSTRING(1, 2);
@@ -351,14 +351,14 @@ void inline LOGD(const char* a_Format, ...)
 
 #else
 	#ifdef  _DEBUG
-		#define ASSERT( x) ( !!(x) || ( LOGERROR("Assertion failed: %s, file %s, line %i", #x, __FILE__, __LINE__), assert(0), 0))
+		#define ASSERT( x) ( !!(x) || ( LOGERROR("Assertion failed: %s, file %s, line %i", #x, __FILE__, __LINE__), PrintStackTrace(), assert(0), 0))
 	#else
 		#define ASSERT(x) ((void)(x))
 	#endif
 #endif
 
 // Pretty much the same as ASSERT() but stays in Release builds
-#define VERIFY( x) ( !!(x) || ( LOGERROR("Verification failed: %s, file %s, line %i", #x, __FILE__, __LINE__), exit(1), 0))
+#define VERIFY( x) ( !!(x) || ( LOGERROR("Verification failed: %s, file %s, line %i", #x, __FILE__, __LINE__), PrintStackTrace(), exit(1), 0))
 
 // Same as assert but in all Self test builds
 #ifdef SELF_TEST
diff --git a/src/HTTPServer/HTTPFormParser.h b/src/HTTPServer/HTTPFormParser.h
index edc6d2471..d9d29d9bc 100644
--- a/src/HTTPServer/HTTPFormParser.h
+++ b/src/HTTPServer/HTTPFormParser.h
@@ -82,7 +82,7 @@ protected:
 	bool m_IsValid;
 	
 	/// The parser for the multipart data, if used
-	std::auto_ptr<cMultipartParser> m_MultipartParser;
+	std::unique_ptr<cMultipartParser> m_MultipartParser;
 	
 	/// Name of the currently parsed part in multipart data
 	AString m_CurrentPartName;
diff --git a/src/Inventory.cpp b/src/Inventory.cpp
index 51ac32da9..fba6f4aea 100644
--- a/src/Inventory.cpp
+++ b/src/Inventory.cpp
@@ -507,7 +507,11 @@ bool cInventory::AddToBar( cItem & a_Item, const int a_Offset, const int a_Size,
 		int MaxStackSize = cItemHandler::GetItemHandler(a_Item.m_ItemType)->GetMaxStackSize();
 		for (int i = 0; i < a_Size; i++)
 		{
-			if (m_Slots[i + a_Offset].m_ItemType == a_Item.m_ItemType && m_Slots[i + a_Offset].m_ItemCount < MaxStackSize && m_Slots[i + a_Offset].m_ItemDamage == a_Item.m_ItemDamage)
+			if (
+				(m_Slots[i + a_Offset].m_ItemType == a_Item.m_ItemType) &&
+				(m_Slots[i + a_Offset].m_ItemCount < MaxStackSize) &&
+				(m_Slots[i + a_Offset].m_ItemDamage == a_Item.m_ItemDamage)
+			)
 			{
 				int NumFree = MaxStackSize - m_Slots[i + a_Offset].m_ItemCount;
 				if (NumFree >= a_Item.m_ItemCount)
@@ -533,7 +537,7 @@ bool cInventory::AddToBar( cItem & a_Item, const int a_Offset, const int a_Size,
 	if (a_Mode > 0)
 	{
 		// If we got more left, find first empty slot
-		for (int i = 0; i < a_Size && a_Item.m_ItemCount > 0; i++)
+		for (int i = 0; (i < a_Size) && (a_Item.m_ItemCount > 0); i++)
 		{
 			if (m_Slots[i + a_Offset].m_ItemType == -1)
 			{
diff --git a/src/ItemGrid.cpp b/src/ItemGrid.cpp
index 55fb36a17..d49ea9df1 100644
--- a/src/ItemGrid.cpp
+++ b/src/ItemGrid.cpp
@@ -6,7 +6,7 @@
 #include "Globals.h"
 #include "ItemGrid.h"
 #include "Items/ItemHandler.h"
-#include "Noise.h"
+#include "Noise/Noise.h"
 
 
 
diff --git a/src/Logger.cpp b/src/Logger.cpp
index cb528e8ab..292622a46 100644
--- a/src/Logger.cpp
+++ b/src/Logger.cpp
@@ -45,12 +45,12 @@ void cLogger::LogSimple(AString a_Message, eLogLevel a_LogLevel)
 
 	AString Line;
 	#ifdef _DEBUG
-		Printf(Line, "[%04lx|%02d:%02d:%02d] %s\n", cIsThread::GetCurrentID(), timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec, a_Message.c_str());
+		Printf(Line, "[%04llx|%02d:%02d:%02d] %s\n", static_cast<UInt64>(std::hash<std::thread::id>()(std::this_thread::get_id())), timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec, a_Message.c_str());
 	#else
 		Printf(Line, "[%02d:%02d:%02d] %s\n", timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec, a_Message.c_str());
 	#endif
 
-	
+
 	cCSLock Lock(m_CriticalSection);
 	for (size_t i = 0; i < m_LogListeners.size(); i++)
 	{
diff --git a/src/MersenneTwister.h b/src/MersenneTwister.h
deleted file mode 100644
index e83a470e2..000000000
--- a/src/MersenneTwister.h
+++ /dev/null
@@ -1,456 +0,0 @@
-// MersenneTwister.h
-// Mersenne Twister random number generator -- a C++ class MTRand
-// Based on code by Makoto Matsumoto, Takuji Nishimura, and Shawn Cokus
-// Richard J. Wagner  v1.1  28 September 2009  wagnerr@umich.edu
-
-// The Mersenne Twister is an algorithm for generating random numbers.  It
-// was designed with consideration of the flaws in various other generators.
-// The period, 2^19937-1, and the order of equidistribution, 623 dimensions,
-// are far greater.  The generator is also fast; it avoids multiplication and
-// division, and it benefits from caches and pipelines.  For more information
-// see the inventors' web page at
-// http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html
-
-// Reference
-// M. Matsumoto and T. Nishimura, "Mersenne Twister: A 623-Dimensionally
-// Equidistributed Uniform Pseudo-Random Number Generator", ACM Transactions on
-// Modeling and Computer Simulation, Vol. 8, No. 1, January 1998, pp 3-30.
-
-// Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
-// Copyright (C) 2000 - 2009, Richard J. Wagner
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions
-// are met:
-//
-//   1. Redistributions of source code must retain the above copyright
-//      notice, this list of conditions and the following disclaimer.
-//
-//   2. Redistributions in binary form must reproduce the above copyright
-//      notice, this list of conditions and the following disclaimer in the
-//      documentation and/or other materials provided with the distribution.
-//
-//   3. The names of its contributors may not be used to endorse or promote
-//      products derived from this software without specific prior written
-//      permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-// ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-// POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef MERSENNETWISTER_H
-#define MERSENNETWISTER_H
-
-// Not thread safe (unless auto-initialization is avoided and each thread has
-// its own MTRand object)
-
-#include <iostream>
-#include <climits>
-#include <cstdio>
-#include <ctime>
-#include <cmath>
-
-class MTRand {
-// Data
-public:
-	typedef UInt32 uint32;  // unsigned integer type, at least 32 bits
-
-	enum { N = 624 };       // length of state vector
-	enum { SAVE = N + 1 };  // length of array for save()
-
-protected:
-	enum { M = 397 };  // period parameter
-
-	uint32 state[N];   // internal state
-	uint32 *pNext;     // next value to get from state
-	uint32 left;       // number of values left before reload needed
-
-// Methods
-public:
-	MTRand( const uint32 oneSeed );  // initialize with a simple uint32
-	MTRand( uint32 *const bigSeed, uint32 const seedLength = N );  // or array
-	MTRand();  // auto-initialize with /dev/urandom or time() and clock()
-	MTRand( const MTRand& o );  // copy
-
-	// Do NOT use for CRYPTOGRAPHY without securely hashing several returned
-	// values together, otherwise the generator state can be learned after
-	// reading 624 consecutive values.
-
-	// Access to 32-bit random numbers
-	uint32 randInt();                     // integer in [0,2^32-1]
-	uint32 randInt( const uint32 n );     // integer in [0,n] for n < 2^32
-	double rand();                        // real number in [0,1]
-	double rand( const double n );        // real number in [0,n]
-	double randExc();                     // real number in [0,1)
-	double randExc( const double n );     // real number in [0,n)
-	double randDblExc();                  // real number in (0,1)
-	double randDblExc( const double n );  // real number in (0,n)
-	double operator()();                  // same as rand()
-
-	// Access to 53-bit random numbers (capacity of IEEE double precision)
-	double rand53();  // real number in [0,1)
-
-	// Access to nonuniform random number distributions
-	double randNorm( const double mean = 0.0, const double stddev = 1.0 );
-
-	// Re-seeding functions with same behavior as initializers
-	void seed( const uint32 oneSeed );
-	void seed( uint32 *const bigSeed, const uint32 seedLength = N );
-	void seed();
-
-	// Saving and loading generator state
-	void save( uint32* saveArray ) const;  // to array of size SAVE
-	void load( uint32 *const loadArray );  // from such array
-	friend std::ostream& operator<<( std::ostream& os, const MTRand& mtrand );
-	friend std::istream& operator>>( std::istream& is, MTRand& mtrand );
-	MTRand& operator=( const MTRand& o );
-
-protected:
-	void initialize( const uint32 oneSeed );
-	void reload();
-	uint32 hiBit( const uint32 u ) const { return u & 0x80000000UL; }
-	uint32 loBit( const uint32 u ) const { return u & 0x00000001UL; }
-	uint32 loBits( const uint32 u ) const { return u & 0x7fffffffUL; }
-	uint32 mixBits( const uint32 u, const uint32 v ) const
-		{ return hiBit(u) | loBits(v); }
-	uint32 magic( const uint32 u ) const
-		{ return loBit(u) ? 0x9908b0dfUL : 0x0UL; }
-	uint32 twist( const uint32 m, const uint32 s0, const uint32 s1 ) const
-		{ return m ^ (mixBits(s0,s1)>>1) ^ magic(s1); }
-	static uint32 hash( time_t t, clock_t c );
-};
-
-// Functions are defined in order of usage to assist inlining
-
-inline MTRand::uint32 MTRand::hash( time_t t, clock_t c )
-{
-	// Get a uint32 from t and c
-	// Better than uint32(x) in case x is floating point in [0,1]
-	// Based on code by Lawrence Kirby (fred@genesis.demon.co.uk)
-
-	static uint32 differ = 0;  // guarantee time-based seeds will change
-
-	uint32 h1 = 0;
-	unsigned char *p = (unsigned char *) &t;
-	for( size_t i = 0; i < sizeof(t); ++i )
-	{
-		h1 *= UCHAR_MAX + 2U;
-		h1 += p[i];
-	}
-	uint32 h2 = 0;
-	p = (unsigned char *) &c;
-	for( size_t j = 0; j < sizeof(c); ++j )
-	{
-		h2 *= UCHAR_MAX + 2U;
-		h2 += p[j];
-	}
-	return ( h1 + differ++ ) ^ h2;
-}
-
-inline void MTRand::initialize( const uint32 seed )
-{
-	// Initialize generator state with seed
-	// See Knuth TAOCP Vol 2, 3rd Ed, p.106 for multiplier.
-	// In previous versions, most significant bits (MSBs) of the seed affect
-	// only MSBs of the state array.  Modified 9 Jan 2002 by Makoto Matsumoto.
-	uint32 *s = state;
-	uint32 *r = state;
-	uint32 i = 1;
-	*s++ = seed & 0xffffffffUL;
-	for( ; i < N; ++i )
-	{
-		*s++ = ( 1812433253UL * ( *r ^ (*r >> 30) ) + i ) & 0xffffffffUL;
-		r++;
-	}
-}
-
-inline void MTRand::reload()
-{
-	// Generate N new values in state
-	// Made clearer and faster by Matthew Bellew (matthew.bellew@home.com)
-	static const int MmN = int(M) - int(N);  // in case enums are unsigned
-	uint32 *p = state;
-	int i;
-	for( i = N - M; i--; ++p )
-		*p = twist( p[M], p[0], p[1] );
-	for( i = M; --i; ++p )
-		*p = twist( p[MmN], p[0], p[1] );
-	*p = twist( p[MmN], p[0], state[0] );
-
-	left = N, pNext = state;
-}
-
-inline void MTRand::seed( const uint32 oneSeed )
-{
-	// Seed the generator with a simple uint32
-	initialize(oneSeed);
-	reload();
-}
-
-inline void MTRand::seed( uint32 *const bigSeed, const uint32 seedLength )
-{
-	// Seed the generator with an array of uint32's
-	// There are 2^19937-1 possible initial states.  This function allows
-	// all of those to be accessed by providing at least 19937 bits (with a
-	// default seed length of N = 624 uint32's).  Any bits above the lower 32
-	// in each element are discarded.
-	// Just call seed() if you want to get array from /dev/urandom
-	initialize(19650218UL);
-	uint32 i = 1;
-	uint32 j = 0;
-	uint32 k = ( static_cast<uint32>(N) > seedLength ? static_cast<uint32>(N) : seedLength );
-	for( ; k; --k )
-	{
-		state[i] =
-		state[i] ^ ( (state[i-1] ^ (state[i-1] >> 30)) * 1664525UL );
-		state[i] += ( bigSeed[j] & 0xffffffffUL ) + j;
-		state[i] &= 0xffffffffUL;
-		++i;  ++j;
-		if( i >= N ) { state[0] = state[N-1];  i = 1; }
-		if( j >= seedLength ) j = 0;
-	}
-	for( k = N - 1; k; --k )
-	{
-		state[i] =
-		state[i] ^ ( (state[i-1] ^ (state[i-1] >> 30)) * 1566083941UL );
-		state[i] -= i;
-		state[i] &= 0xffffffffUL;
-		++i;
-		if( i >= N ) { state[0] = state[N-1];  i = 1; }
-	}
-	state[0] = 0x80000000UL;  // MSB is 1, assuring non-zero initial array
-	reload();
-}
-
-inline void MTRand::seed()
-{
-	// Seed the generator with an array from /dev/urandom if available
-	// Otherwise use a hash of time() and clock() values
-
-	// First try getting an array from /dev/urandom
-
-	/* // Commented out by FakeTruth because doing this 200 times a tick is SUUUUPEERRR SLOW!!~~!\D5Ne
-	FILE* urandom = fopen( "/dev/urandom", "rb" );
-	if( urandom )
-	{
-		uint32 bigSeed[N];
-		register uint32 *s = bigSeed;
-		register int i = N;
-		register bool success = true;
-		while( success && i-- )
-			success = fread( s++, sizeof(uint32), 1, urandom );
-		fclose(urandom);
-		if( success ) { seed( bigSeed, N );  return; }
-	}
-	*/
-
-	// Was not successful, so use time() and clock() instead
-	seed( hash( time(NULL), clock() ) );
-}
-
-inline MTRand::MTRand( const uint32 oneSeed )
-	{ seed(oneSeed); }
-
-inline MTRand::MTRand( uint32 *const bigSeed, const uint32 seedLength )
-	{ seed(bigSeed,seedLength); }
-
-inline MTRand::MTRand()
-	{ seed(); }
-
-inline MTRand::MTRand( const MTRand& o )
-{
-	const uint32 *t = o.state;
-	uint32 *s = state;
-	int i = N;
-	for( ; i--; *s++ = *t++ ) {}
-	left = o.left;
-	pNext = &state[N-left];
-}
-
-inline MTRand::uint32 MTRand::randInt()
-{
-	// Pull a 32-bit integer from the generator state
-	// Every other access function simply transforms the numbers extracted here
-
-	if( left == 0 ) reload();
-	--left;
-
-	uint32 s1;
-	s1 = *pNext++;
-	s1 ^= (s1 >> 11);
-	s1 ^= (s1 <<  7) & 0x9d2c5680UL;
-	s1 ^= (s1 << 15) & 0xefc60000UL;
-	return ( s1 ^ (s1 >> 18) );
-}
-
-inline MTRand::uint32 MTRand::randInt( const uint32 n )
-{
-	// Find which bits are used in n
-	// Optimized by Magnus Jonsson (magnus@smartelectronix.com)
-	uint32 used = n;
-	used |= used >> 1;
-	used |= used >> 2;
-	used |= used >> 4;
-	used |= used >> 8;
-	used |= used >> 16;
-
-	// Draw numbers until one is found in [0,n]
-	uint32 i;
-	do
-		i = randInt() & used;  // toss unused bits to shorten search
-	while( i > n );
-	return i;
-}
-
-inline double MTRand::rand()
-	{ return double(randInt()) * (1.0/4294967295.0); }
-
-inline double MTRand::rand( const double n )
-	{ return rand() * n; }
-
-inline double MTRand::randExc()
-	{ return double(randInt()) * (1.0/4294967296.0); }
-
-inline double MTRand::randExc( const double n )
-	{ return randExc() * n; }
-
-inline double MTRand::randDblExc()
-	{ return ( double(randInt()) + 0.5 ) * (1.0/4294967296.0); }
-
-inline double MTRand::randDblExc( const double n )
-	{ return randDblExc() * n; }
-
-inline double MTRand::rand53()
-{
-	uint32 a = randInt() >> 5, b = randInt() >> 6;
-	return ( a * 67108864.0 + b ) * (1.0/9007199254740992.0);  // by Isaku Wada
-}
-
-inline double MTRand::randNorm( const double mean, const double stddev )
-{
-	// Return a real number from a normal (Gaussian) distribution with given
-	// mean and standard deviation by polar form of Box-Muller transformation
-	double x, y, r;
-	do
-	{
-		x = 2.0 * rand() - 1.0;
-		y = 2.0 * rand() - 1.0;
-		r = x * x + y * y;
-	}
-	while ( r >= 1.0 || r == 0.0 );
-	double s = sqrt( -2.0 * log(r) / r );
-	return mean + x * s * stddev;
-}
-
-inline double MTRand::operator()()
-{
-	return rand();
-}
-
-inline void MTRand::save( uint32* saveArray ) const
-{
-	const uint32 *s = state;
-	uint32 *sa = saveArray;
-	int i = N;
-	for( ; i--; *sa++ = *s++ ) {}
-	*sa = left;
-}
-
-inline void MTRand::load( uint32 *const loadArray )
-{
-	uint32 *s = state;
-	uint32 *la = loadArray;
-	int i = N;
-	for( ; i--; *s++ = *la++ ) {}
-	left = *la;
-	pNext = &state[N-left];
-}
-
-inline std::ostream& operator<<( std::ostream& os, const MTRand& mtrand )
-{
-	const MTRand::uint32 *s = mtrand.state;
-	int i = mtrand.N;
-	for( ; i--; os << *s++ << "\t" ) {}
-	return os << mtrand.left;
-}
-
-inline std::istream& operator>>( std::istream& is, MTRand& mtrand )
-{
-	MTRand::uint32 *s = mtrand.state;
-	int i = mtrand.N;
-	for( ; i--; is >> *s++ ) {}
-	is >> mtrand.left;
-	mtrand.pNext = &mtrand.state[mtrand.N-mtrand.left];
-	return is;
-}
-
-inline MTRand& MTRand::operator=( const MTRand& o )
-{
-	if( this == &o ) return (*this);
-	const uint32 *t = o.state;
-	uint32 *s = state;
-	int i = N;
-	for( ; i--; *s++ = *t++ ) {}
-	left = o.left;
-	pNext = &state[N-left];
-	return (*this);
-}
-
-#endif  // MERSENNETWISTER_H
-
-// Change log:
-//
-// v0.1 - First release on 15 May 2000
-//      - Based on code by Makoto Matsumoto, Takuji Nishimura, and Shawn Cokus
-//      - Translated from C to C++
-//      - Made completely ANSI compliant
-//      - Designed convenient interface for initialization, seeding, and
-//        obtaining numbers in default or user-defined ranges
-//      - Added automatic seeding from /dev/urandom or time() and clock()
-//      - Provided functions for saving and loading generator state
-//
-// v0.2 - Fixed bug which reloaded generator one step too late
-//
-// v0.3 - Switched to clearer, faster reload() code from Matthew Bellew
-//
-// v0.4 - Removed trailing newline in saved generator format to be consistent
-//        with output format of built-in types
-//
-// v0.5 - Improved portability by replacing static const int's with enum's and
-//        clarifying return values in seed(); suggested by Eric Heimburg
-//      - Removed MAXINT constant; use 0xffffffffUL instead
-//
-// v0.6 - Eliminated seed overflow when uint32 is larger than 32 bits
-//      - Changed integer [0,n] generator to give better uniformity
-//
-// v0.7 - Fixed operator precedence ambiguity in reload()
-//      - Added access for real numbers in (0,1) and (0,n)
-//
-// v0.8 - Included time.h header to properly support time_t and clock_t
-//
-// v1.0 - Revised seeding to match 26 Jan 2002 update of Nishimura and Matsumoto
-//      - Allowed for seeding with arrays of any length
-//      - Added access for real numbers in [0,1) with 53-bit resolution
-//      - Added access for real numbers from normal (Gaussian) distributions
-//      - Increased overall speed by optimizing twist()
-//      - Doubled speed of integer [0,n] generation
-//      - Fixed out-of-range number generation on 64-bit machines
-//      - Improved portability by substituting literal constants for long enum's
-//      - Changed license from GNU LGPL to BSD
-//
-// v1.1 - Corrected parameter label in randNorm from "variance" to "stddev"
-//      - Changed randNorm algorithm from basic to polar form for efficiency
-//      - Updated includes from deprecated <xxxx.h> to standard <cxxxx> forms
-//      - Cleaned declarations and definitions to please Intel compiler
-//      - Revised twist() operator to work on ones'-complement machines
-//      - Fixed reload() function to work when N and M are unsigned
-//      - Added copy constructor and copy operator from Salvador Espana
diff --git a/src/MobSpawner.cpp b/src/MobSpawner.cpp
index e461fae4c..ee9e569a7 100644
--- a/src/MobSpawner.cpp
+++ b/src/MobSpawner.cpp
@@ -61,7 +61,7 @@ eMonsterType cMobSpawner::ChooseMobType(EMCSBiome a_Biome)
 {
 	std::set<eMonsterType> allowedMobs;
 
-	if (a_Biome == biMushroomIsland || a_Biome == biMushroomShore)
+	if ((a_Biome == biMushroomIsland) || (a_Biome == biMushroomShore))
 	{
 		addIfAllowed(mtMooshroom, allowedMobs);
 	}
@@ -84,7 +84,7 @@ eMonsterType cMobSpawner::ChooseMobType(EMCSBiome a_Biome)
 		addIfAllowed(mtCreeper, allowedMobs);
 		addIfAllowed(mtSquid, allowedMobs);
 		
-		if (a_Biome != biDesert && a_Biome != biBeach && a_Biome != biOcean)
+		if ((a_Biome != biDesert) && (a_Biome != biBeach) && (a_Biome != biOcean))
 		{
 			addIfAllowed(mtSheep, allowedMobs);
 			addIfAllowed(mtPig, allowedMobs);
@@ -93,11 +93,11 @@ eMonsterType cMobSpawner::ChooseMobType(EMCSBiome a_Biome)
 			addIfAllowed(mtEnderman, allowedMobs);
 			addIfAllowed(mtSlime, allowedMobs);  // MG TODO : much more complicated rule
 			
-			if (a_Biome == biForest || a_Biome == biForestHills || a_Biome == biTaiga  || a_Biome == biTaigaHills)
+			if ((a_Biome == biForest) || (a_Biome == biForestHills) || (a_Biome == biTaiga) || (a_Biome == biTaigaHills))
 			{
 				addIfAllowed(mtWolf, allowedMobs);
 			}
-			else if (a_Biome == biJungle || a_Biome == biJungleHills)
+			else if ((a_Biome == biJungle) || (a_Biome == biJungleHills))
 			{
 				addIfAllowed(mtOcelot, allowedMobs);
 			}
@@ -126,8 +126,9 @@ eMonsterType cMobSpawner::ChooseMobType(EMCSBiome a_Biome)
 
 bool cMobSpawner::CanSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ, eMonsterType a_MobType, EMCSBiome a_Biome)
 {
+	cFastRandom Random;
 	BLOCKTYPE TargetBlock = E_BLOCK_AIR;
-	if (m_AllowedTypes.find(a_MobType) != m_AllowedTypes.end() && a_Chunk->UnboundedRelGetBlockType(a_RelX, a_RelY, a_RelZ, TargetBlock))
+	if (a_Chunk->UnboundedRelGetBlockType(a_RelX, a_RelY, a_RelZ, TargetBlock))
 	{
 		if ((a_RelY + 1 > cChunkDef::Height) || (a_RelY - 1 < 0))
 		{
@@ -177,7 +178,7 @@ bool cMobSpawner::CanSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_R
 						(BlockBelow == E_BLOCK_GRASS) || (BlockBelow == E_BLOCK_LEAVES) || (BlockBelow == E_BLOCK_NEW_LEAVES)
 					) &&
 					(a_RelY >= 62) &&
-					(m_Random.NextInt(3, a_Biome) != 0)
+					(Random.NextInt(3, a_Biome) != 0)
 				);
 			}
 			
@@ -238,7 +239,7 @@ bool cMobSpawner::CanSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_R
 					(!cBlockInfo::IsTransparent(BlockBelow)) &&
 					(SkyLight <= 7) &&
 					(BlockLight <= 7) &&
-					(m_Random.NextInt(2, a_Biome) == 0)
+					(Random.NextInt(2, a_Biome) == 0)
 				);
 			}
 
@@ -262,7 +263,7 @@ bool cMobSpawner::CanSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_R
 					(TargetBlock == E_BLOCK_AIR) &&
 					(BlockAbove == E_BLOCK_AIR) &&
 					(!cBlockInfo::IsTransparent(BlockBelow)) &&
-					(m_Random.NextInt(20, a_Biome) == 0)
+					(Random.NextInt(20, a_Biome) == 0)
 				);
 			}
 			
@@ -284,6 +285,19 @@ bool cMobSpawner::CanSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_R
 					)
 				);
 			}
+
+			case mtMooshroom:
+			{
+				return (
+					(TargetBlock == E_BLOCK_AIR) &&
+					(BlockAbove == E_BLOCK_AIR) &&
+					(BlockBelow == E_BLOCK_MYCELIUM) &&
+					(
+						(a_Biome == biMushroomShore) ||
+						(a_Biome == biMushroomIsland)
+					)
+				);
+			}
 			
 			default:
 			{
@@ -322,8 +336,8 @@ cMonster* cMobSpawner::TryToSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY,
 
 	// Make sure we are looking at the right chunk to spawn in
 	a_Chunk = a_Chunk->GetRelNeighborChunkAdjustCoords(a_RelX, a_RelZ);
-	
-	if (CanSpawnHere(a_Chunk, a_RelX, a_RelY, a_RelZ, m_MobType, a_Biome))
+
+	if ((m_AllowedTypes.find(m_MobType) != m_AllowedTypes.end()) && CanSpawnHere(a_Chunk, a_RelX, a_RelY, a_RelZ, m_MobType, a_Biome))
 	{
 		cMonster * newMob = cMonster::NewMonsterFromType(m_MobType);
 		if (newMob)
diff --git a/src/MobSpawner.h b/src/MobSpawner.h
index 6b3a913ec..e8b8f191b 100644
--- a/src/MobSpawner.h
+++ b/src/MobSpawner.h
@@ -51,10 +51,10 @@ public :
 	typedef const std::set<cMonster *> tSpawnedContainer;
 	tSpawnedContainer & getSpawned(void);
 
-protected :
-	// return true if specified type of mob can spawn on specified block
-	bool CanSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ, eMonsterType a_MobType, EMCSBiome a_Biome);
+	/** Returns true if specified type of mob can spawn on specified block */
+	static bool CanSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ, eMonsterType a_MobType, EMCSBiome a_Biome);
 
+protected :
 	// return a random type that can spawn on specified biome.
 	// returns E_ENTITY_TYPE_DONOTUSE if none is possible
 	eMonsterType ChooseMobType(EMCSBiome a_Biome);
@@ -62,7 +62,6 @@ protected :
 	// add toAdd inside toAddIn, if toAdd is in m_AllowedTypes
 	void addIfAllowed(eMonsterType toAdd, std::set<eMonsterType> & toAddIn);
 
-protected :
 	cMonster::eFamily m_MonsterFamily;
 	std::set<eMonsterType> m_AllowedTypes;
 	bool m_NewPack;
diff --git a/src/Mobs/AggressiveMonster.cpp b/src/Mobs/AggressiveMonster.cpp
index 41ef26e2a..7ca7a9d66 100644
--- a/src/Mobs/AggressiveMonster.cpp
+++ b/src/Mobs/AggressiveMonster.cpp
@@ -75,7 +75,9 @@ void cAggressiveMonster::Tick(float a_Dt, cChunk & a_Chunk)
 	}
 
 	if (m_Target == nullptr)
+	{
 		return;
+	}
 
 	cTracer LineOfSight(GetWorld());
 	Vector3d AttackDirection(m_Target->GetPosition() - GetPosition());
diff --git a/src/Mobs/Blaze.cpp b/src/Mobs/Blaze.cpp
index 16869c79d..1fa9d2c37 100644
--- a/src/Mobs/Blaze.cpp
+++ b/src/Mobs/Blaze.cpp
@@ -34,7 +34,7 @@ void cBlaze::Attack(float a_Dt)
 {
 	m_AttackInterval += a_Dt * m_AttackRate;
 
-	if (m_Target != nullptr && m_AttackInterval > 3.0)
+	if ((m_Target != nullptr) && (m_AttackInterval > 3.0))
 	{
 		// Setting this higher gives us more wiggle room for attackrate
 		Vector3d Speed = GetLookVector() * 20;
diff --git a/src/Mobs/Ghast.cpp b/src/Mobs/Ghast.cpp
index c65c0d29a..fc8de8362 100644
--- a/src/Mobs/Ghast.cpp
+++ b/src/Mobs/Ghast.cpp
@@ -36,7 +36,7 @@ void cGhast::Attack(float a_Dt)
 {
 	m_AttackInterval += a_Dt * m_AttackRate;
 	
-	if (m_Target != nullptr && m_AttackInterval > 3.0)
+	if ((m_Target != nullptr) && (m_AttackInterval > 3.0))
 	{
 		// Setting this higher gives us more wiggle room for attackrate
 		Vector3d Speed = GetLookVector() * 20;
diff --git a/src/Mobs/Monster.cpp b/src/Mobs/Monster.cpp
index 23b4d9f45..7b8f763af 100644
--- a/src/Mobs/Monster.cpp
+++ b/src/Mobs/Monster.cpp
@@ -9,7 +9,6 @@
 #include "../Entities/Player.h"
 #include "../Entities/ExpOrb.h"
 #include "../MonsterConfig.h"
-#include "../MersenneTwister.h"
 
 #include "../Chunk.h"
 #include "../FastRandom.h"
@@ -21,57 +20,49 @@
 /** Map for eType <-> string
 Needs to be alpha-sorted by the strings, because binary search is used in StringToMobType()
 The strings need to be lowercase (for more efficient comparisons in StringToMobType())
+m_VanillaName is the name that vanilla use for this mob.
 */
 static const struct
 {
 	eMonsterType m_Type;
 	const char * m_lcName;
+	const char * m_VanillaName;
 } g_MobTypeNames[] =
 {
-	{mtBat,          "bat"},
-	{mtBlaze,        "blaze"},
-	{mtCaveSpider,   "cavespider"},
-	{mtChicken,      "chicken"},
-	{mtCow,          "cow"},
-	{mtCreeper,      "creeper"},
-	{mtEnderman,     "enderman"},
-	{mtEnderDragon,  "enderdragon"},
-	{mtGhast,        "ghast"},
-	{mtHorse,        "horse"},
-	{mtIronGolem,    "irongolem"},
-	{mtMagmaCube,    "magmacube"},
-	{mtMooshroom,    "mooshroom"},
-	{mtOcelot,       "ocelot"},
-	{mtPig,          "pig"},
-	{mtSheep,        "sheep"},
-	{mtSilverfish,   "silverfish"},
-	{mtSkeleton,     "skeleton"},
-	{mtSlime,        "slime"},
-	{mtSnowGolem,    "snowgolem"},
-	{mtSpider,       "spider"},
-	{mtSquid,        "squid"},
-	{mtVillager,     "villager"},
-	{mtWitch,        "witch"},
-	{mtWither,       "wither"},
-	{mtWolf,         "wolf"},
-	{mtZombie,       "zombie"},
-	{mtZombiePigman, "zombiepigman"},
+	{mtBat,          "bat",          "Bat"},
+	{mtBlaze,        "blaze",        "Blaze"},
+	{mtCaveSpider,   "cavespider",   "CaveSpider"},
+	{mtChicken,      "chicken",      "Chicken"},
+	{mtCow,          "cow",          "Cow"},
+	{mtCreeper,      "creeper",      "Creeper"},
+	{mtEnderman,     "enderman",     "Enderman"},
+	{mtEnderDragon,  "enderdragon",  "EnderDragon"},
+	{mtGhast,        "ghast",        "Ghast"},
+	{mtHorse,        "horse",        "EntityHorse"},
+	{mtIronGolem,    "irongolem",    "VillagerGolem"},
+	{mtMagmaCube,    "magmacube",    "LavaSlime"},
+	{mtMooshroom,    "mooshroom",    "MushroomCow"},
+	{mtOcelot,       "ocelot",       "Ozelot"},
+	{mtPig,          "pig",          "Pig"},
+	{mtSheep,        "sheep",        "Sheep"},
+	{mtSilverfish,   "silverfish",   "Silverfish"},
+	{mtSkeleton,     "skeleton",     "Skeleton"},
+	{mtSlime,        "slime",        "Slime"},
+	{mtSnowGolem,    "snowgolem",    "SnowMan"},
+	{mtSpider,       "spider",       "Spider"},
+	{mtSquid,        "squid",        "Squid"},
+	{mtVillager,     "villager",     "Villager"},
+	{mtWitch,        "witch",        "Witch"},
+	{mtWither,       "wither",       "WitherBoss"},
+	{mtWolf,         "wolf",         "Wolf"},
+	{mtZombie,       "zombie",       "Zombie"},
+	{mtZombiePigman, "zombiepigman", "PigZombie"},
 } ;
 
 
 
 
 
-eMonsterType StringToMobType(const AString & a_MobString)
-{
-	LOGWARNING("%s: Function is obsolete, use cMonster::StringToMobType() instead", __FUNCTION__);
-	return cMonster::StringToMobType(a_MobString);
-}
-
-
-
-
-
 ////////////////////////////////////////////////////////////////////////////////
 // cMonster:
 
@@ -160,7 +151,7 @@ void cMonster::TickPathFinding()
 		BLOCKTYPE BlockAtYP = m_World->GetBlock(gCrossCoords[i].x + PosX, PosY + 1, gCrossCoords[i].z + PosZ);
 		BLOCKTYPE BlockAtYPP = m_World->GetBlock(gCrossCoords[i].x + PosX, PosY + 2, gCrossCoords[i].z + PosZ);
 		int LowestY = FindFirstNonAirBlockPosition(gCrossCoords[i].x + PosX, gCrossCoords[i].z + PosZ);
-		BLOCKTYPE BlockAtLowestY = m_World->GetBlock(gCrossCoords[i].x + PosX, LowestY, gCrossCoords[i].z + PosZ);
+		BLOCKTYPE BlockAtLowestY = (LowestY >= cChunkDef::Height) ? E_BLOCK_AIR : m_World->GetBlock(gCrossCoords[i].x + PosX, LowestY, gCrossCoords[i].z + PosZ);
 
 		if (
 			(!cBlockInfo::IsSolid(BlockAtY)) &&
@@ -275,7 +266,9 @@ void cMonster::Tick(float a_Dt, cChunk & a_Chunk)
 	}
 
 	if ((m_Target != nullptr) && m_Target->IsDestroyed())
+	{
 		m_Target = nullptr;
+	}
 
 	// Burning in daylight
 	HandleDaylightBurning(a_Chunk);
@@ -453,7 +446,7 @@ int cMonster::FindFirstNonAirBlockPosition(double a_PosX, double a_PosZ)
 	}
 	else
 	{
-		while (cBlockInfo::IsSolid(m_World->GetBlock((int)floor(a_PosX), PosY, (int)floor(a_PosZ))) && (PosY < cChunkDef::Height))
+		while ((PosY < cChunkDef::Height) && cBlockInfo::IsSolid(m_World->GetBlock((int)floor(a_PosX), PosY, (int)floor(a_PosZ))))
 		{
 			PosY++;
 		}
@@ -784,39 +777,47 @@ AString cMonster::MobTypeToString(eMonsterType a_MobType)
 
 
 
-eMonsterType cMonster::StringToMobType(const AString & a_Name)
+AString cMonster::MobTypeToVanillaName(eMonsterType a_MobType)
 {
-	AString lcName = StrToLower(a_Name);
-	
-	// Binary-search for the lowercase name:
-	int lo = 0, hi = ARRAYCOUNT(g_MobTypeNames) - 1;
-	while (hi - lo > 1)
+	// Mob types aren't sorted, so we need to search linearly:
+	for (size_t i = 0; i < ARRAYCOUNT(g_MobTypeNames); i++)
 	{
-		int mid = (lo + hi) / 2;
-		int res = strcmp(g_MobTypeNames[mid].m_lcName, lcName.c_str());
-		if (res == 0)
-		{
-			return g_MobTypeNames[mid].m_Type;
-		}
-		if (res < 0)
-		{
-			lo = mid;
-		}
-		else
+		if (g_MobTypeNames[i].m_Type == a_MobType)
 		{
-			hi = mid;
+			return g_MobTypeNames[i].m_VanillaName;
 		}
 	}
-	// Range has collapsed to at most two elements, compare each:
-	if (strcmp(g_MobTypeNames[lo].m_lcName, lcName.c_str()) == 0)
+
+	// Not found:
+	return "";
+}
+
+
+
+
+
+eMonsterType cMonster::StringToMobType(const AString & a_Name)
+{
+	AString lcName = StrToLower(a_Name);
+
+	// Search MCServer name:
+	for (size_t i = 0; i < ARRAYCOUNT(g_MobTypeNames); i++)
 	{
-		return g_MobTypeNames[lo].m_Type;
+		if (strcmp(g_MobTypeNames[i].m_lcName, lcName.c_str()) == 0)
+		{
+			return g_MobTypeNames[i].m_Type;
+		}
 	}
-	if ((lo != hi) && (strcmp(g_MobTypeNames[hi].m_lcName, lcName.c_str()) == 0))
+
+	// Not found. Search Vanilla name:
+	for (size_t i = 0; i < ARRAYCOUNT(g_MobTypeNames); i++)
 	{
-		return g_MobTypeNames[hi].m_Type;
+		if (strcmp(StrToLower(g_MobTypeNames[i].m_VanillaName).c_str(), lcName.c_str()) == 0)
+		{
+			return g_MobTypeNames[i].m_Type;
+		}
 	}
-	
+
 	// Not found:
 	return mtInvalidType;
 }
@@ -1028,22 +1029,34 @@ void cMonster::AddRandomArmorDropItem(cItems & a_Drops, short a_LootingLevel)
 	MTRand r1;
 	if (r1.randInt() % 200 < ((m_DropChanceHelmet * 200) + (a_LootingLevel * 2)))
 	{
-		if (!GetEquippedHelmet().IsEmpty()) a_Drops.push_back(GetEquippedHelmet());
+		if (!GetEquippedHelmet().IsEmpty())
+		{
+			a_Drops.push_back(GetEquippedHelmet());
+		}
 	}
 	
 	if (r1.randInt() % 200 < ((m_DropChanceChestplate * 200) + (a_LootingLevel * 2)))
 	{
-		if (!GetEquippedChestplate().IsEmpty()) a_Drops.push_back(GetEquippedChestplate());
+		if (!GetEquippedChestplate().IsEmpty())
+		{
+			a_Drops.push_back(GetEquippedChestplate());
+		}
 	}
 	
 	if (r1.randInt() % 200 < ((m_DropChanceLeggings * 200) + (a_LootingLevel * 2)))
 	{
-		if (!GetEquippedLeggings().IsEmpty()) a_Drops.push_back(GetEquippedLeggings());
+		if (!GetEquippedLeggings().IsEmpty())
+		{
+			a_Drops.push_back(GetEquippedLeggings());
+		}
 	}
 	
 	if (r1.randInt() % 200 < ((m_DropChanceBoots * 200) + (a_LootingLevel * 2)))
 	{
-		if (!GetEquippedBoots().IsEmpty()) a_Drops.push_back(GetEquippedBoots());
+		if (!GetEquippedBoots().IsEmpty())
+		{
+			a_Drops.push_back(GetEquippedBoots());
+		}
 	}
 }
 
@@ -1056,7 +1069,10 @@ void cMonster::AddRandomWeaponDropItem(cItems & a_Drops, short a_LootingLevel)
 	MTRand r1;
 	if (r1.randInt() % 200 < ((m_DropChanceWeapon * 200) + (a_LootingLevel * 2)))
 	{
-		if (!GetEquippedWeapon().IsEmpty()) a_Drops.push_back(GetEquippedWeapon());
+		if (!GetEquippedWeapon().IsEmpty())
+		{
+			a_Drops.push_back(GetEquippedWeapon());
+		}
 	}
 }
 
diff --git a/src/Mobs/Monster.h b/src/Mobs/Monster.h
index f5ae2cb4d..f04e45ac6 100644
--- a/src/Mobs/Monster.h
+++ b/src/Mobs/Monster.h
@@ -64,7 +64,7 @@ public:
 	virtual bool ReachedDestination(void);
 
 	// tolua_begin
-	eMonsterType GetMobType(void) const {return m_MobType; }
+	eMonsterType GetMobType(void) const { return m_MobType; }
 	eFamily GetMobFamily(void) const;
 	// tolua_end
 
@@ -133,16 +133,19 @@ public:
 	If it's false, you only see the name when you sight the mob. If it's true, you always see the custom name. */
 	void SetCustomNameAlwaysVisible(bool a_CustomNameAlwaysVisible);
 
-	/// Translates MobType enum to a string, empty string if unknown
+	/** Translates MobType enum to a string, empty string if unknown */
 	static AString MobTypeToString(eMonsterType a_MobType);
 
-	/// Translates MobType string to the enum, mtInvalidType if not recognized
+	/** Translates MobType enum to the vanilla name of the mob, empty string if unknown. */
+	static AString MobTypeToVanillaName(eMonsterType a_MobType);
+
+	/** Translates MobType string to the enum, mtInvalidType if not recognized */
 	static eMonsterType StringToMobType(const AString & a_MobTypeName);
 
-	/// Returns the mob family based on the type
+	/** Returns the mob family based on the type */
 	static eFamily FamilyFromType(eMonsterType a_MobType);
 
-	/// Returns the spawn delay (number of game ticks between spawn attempts) for the given mob family
+	/** Returns the spawn delay (number of game ticks between spawn attempts) for the given mob family */
 	static int GetSpawnDelay(cMonster::eFamily a_MobFamily);
 
 	// tolua_end
@@ -169,10 +172,12 @@ protected:
 	/** Stores if mobile is currently moving towards the ultimate, final destination */
 	bool m_bMovingToDestination;
 
-	/** Finds the first non-air block position (not the highest, as cWorld::GetHeight does)
-		If current Y is nonsolid, goes down to try to find a solid block, then returns that + 1
-		If current Y is solid, goes up to find first nonsolid block, and returns that */
+	/** Finds the lowest non-air block position (not the highest, as cWorld::GetHeight does)
+	If current Y is nonsolid, goes down to try to find a solid block, then returns that + 1
+	If current Y is solid, goes up to find first nonsolid block, and returns that.
+	If no suitable position is found, returns cChunkDef::Height. */
 	int FindFirstNonAirBlockPosition(double a_PosX, double a_PosZ);
+
 	/** Returns if a monster can actually reach a given height by jumping or walking */
 	inline bool IsNextYPosReachable(int a_PosY)
 	{
diff --git a/src/Mobs/MonsterTypes.h b/src/Mobs/MonsterTypes.h
index 852eb3446..dc6dd3992 100644
--- a/src/Mobs/MonsterTypes.h
+++ b/src/Mobs/MonsterTypes.h
@@ -2,6 +2,7 @@
 #pragma once
 
 /// This identifies individual monster type, as well as their network type-ID
+
 // tolua_begin
 enum eMonsterType
 {
@@ -38,15 +39,6 @@ enum eMonsterType
 	mtZombiePigman = E_META_SPAWN_EGG_ZOMBIE_PIGMAN,
 } ;
 
-
-
-
-
-/** Translates a mob string ("ocelot") to mobtype (mtOcelot).
-OBSOLETE, use cMonster::StringToMobType() instead.
-Implemented in Monster.cpp. */
-extern eMonsterType StringToMobType(const AString & a_MobString);
-
 // tolua_end
 
 
diff --git a/src/Mobs/Pig.cpp b/src/Mobs/Pig.cpp
index 55a4412ca..1e4c35acd 100644
--- a/src/Mobs/Pig.cpp
+++ b/src/Mobs/Pig.cpp
@@ -49,17 +49,17 @@ void cPig::OnRightClicked(cPlayer & a_Player)
 				a_Player.Detach();
 				return;
 			}
-		
+
 			if (m_Attachee->IsPlayer())
 			{
 				// Another player is already sitting in here, cannot attach
 				return;
 			}
-		
+
 			// Detach whatever is sitting in this pig now:
 			m_Attachee->Detach();
 		}
-	
+
 		// Attach the player to this pig
 		a_Player.AttachTo(this);
 	}
@@ -98,3 +98,23 @@ void cPig::Tick(float a_Dt, cChunk & a_Chunk)
 
 
 
+
+bool cPig::DoTakeDamage(TakeDamageInfo & a_TDI)
+{
+	if (!super::DoTakeDamage(a_TDI))
+	{
+		return false;
+	}
+
+	if (a_TDI.DamageType == dtLightning)
+	{
+		Destroy();
+		m_World->SpawnMob(GetPosX(), GetPosY(), GetPosZ(), mtZombiePigman);
+		return true;
+	}
+	return true;
+}
+
+
+
+
diff --git a/src/Mobs/Pig.h b/src/Mobs/Pig.h
index 953850b3a..0e026933a 100644
--- a/src/Mobs/Pig.h
+++ b/src/Mobs/Pig.h
@@ -17,6 +17,9 @@ public:
 
 	CLASS_PROTODEF(cPig)
 
+	// cEntity overrides
+	virtual bool DoTakeDamage(TakeDamageInfo & a_TDI) override;
+	
 	virtual void GetDrops(cItems & a_Drops, cEntity * a_Killer = nullptr) override;
 	virtual void OnRightClicked(cPlayer & a_Player) override;
 	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
diff --git a/src/Mobs/Skeleton.cpp b/src/Mobs/Skeleton.cpp
index f17bc307c..da5ddc670 100644
--- a/src/Mobs/Skeleton.cpp
+++ b/src/Mobs/Skeleton.cpp
@@ -71,7 +71,7 @@ void cSkeleton::Attack(float a_Dt)
 {
 	m_AttackInterval += a_Dt * m_AttackRate;
 
-	if (m_Target != nullptr && m_AttackInterval > 3.0)
+	if ((m_Target != nullptr) && (m_AttackInterval > 3.0))
 	{
 		// Setting this higher gives us more wiggle room for attackrate
 		Vector3d Speed = GetLookVector() * 20;
diff --git a/src/Mobs/SnowGolem.cpp b/src/Mobs/SnowGolem.cpp
index 76334d970..8c4178beb 100644
--- a/src/Mobs/SnowGolem.cpp
+++ b/src/Mobs/SnowGolem.cpp
@@ -38,7 +38,7 @@ void cSnowGolem::Tick(float a_Dt, cChunk & a_Chunk)
 	{
 		BLOCKTYPE BlockBelow = m_World->GetBlock((int) floor(GetPosX()), (int) floor(GetPosY()) - 1, (int) floor(GetPosZ()));
 		BLOCKTYPE Block = m_World->GetBlock((int) floor(GetPosX()), (int) floor(GetPosY()), (int) floor(GetPosZ()));
-		if (Block == E_BLOCK_AIR && cBlockInfo::IsSolid(BlockBelow))
+		if ((Block == E_BLOCK_AIR) && cBlockInfo::IsSolid(BlockBelow))
 		{
 			m_World->SetBlock((int) floor(GetPosX()), (int) floor(GetPosY()), (int) floor(GetPosZ()), E_BLOCK_SNOW, 0);
 		}
diff --git a/src/Mobs/Villager.cpp b/src/Mobs/Villager.cpp
index 5c9999a59..963595347 100644
--- a/src/Mobs/Villager.cpp
+++ b/src/Mobs/Villager.cpp
@@ -37,6 +37,13 @@ bool cVillager::DoTakeDamage(TakeDamageInfo & a_TDI)
 			m_World->BroadcastEntityStatus(*this, esVillagerAngry);
 		}
 	}
+
+	if (a_TDI.DamageType == dtLightning)
+	{
+		Destroy();
+		m_World->SpawnMob(GetPosX(), GetPosY(), GetPosZ(), mtWitch);
+		return true;
+	}
 	return true;
 }
 
diff --git a/src/Mobs/Witch.cpp b/src/Mobs/Witch.cpp
index 747a11f97..a3cadbaa0 100644
--- a/src/Mobs/Witch.cpp
+++ b/src/Mobs/Witch.cpp
@@ -2,6 +2,7 @@
 #include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
 #include "Witch.h"
+#include "FastRandom.h"
 
 
 
diff --git a/src/Mobs/Witch.h b/src/Mobs/Witch.h
index 03691fef1..8230e1f98 100644
--- a/src/Mobs/Witch.h
+++ b/src/Mobs/Witch.h
@@ -2,7 +2,6 @@
 #pragma once
 
 #include "AggressiveMonster.h"
-#include "../MersenneTwister.h"
 
 
 
diff --git a/src/Noise/CMakeLists.txt b/src/Noise/CMakeLists.txt
new file mode 100644
index 000000000..e1837500f
--- /dev/null
+++ b/src/Noise/CMakeLists.txt
@@ -0,0 +1,21 @@
+
+cmake_minimum_required (VERSION 2.6)
+project (MCServer)
+
+include_directories ("${PROJECT_SOURCE_DIR}/../")
+
+SET (SRCS
+	Noise.cpp
+)
+
+SET (HDRS
+	Noise.h
+	OctavedNoise.h
+	RidgedNoise.h
+)
+
+if(NOT MSVC)
+	add_library(Noise ${SRCS} ${HDRS})
+
+	target_link_libraries(Noise OSSupport)
+endif()
diff --git a/src/Noise/InterpolNoise.h b/src/Noise/InterpolNoise.h
new file mode 100644
index 000000000..683b54563
--- /dev/null
+++ b/src/Noise/InterpolNoise.h
@@ -0,0 +1,524 @@
+
+// InterpolNoise.h
+
+// Implements the cInterpolNoise class template representing a noise that interpolates the values between integer coords from a single set of neighbors
+
+
+
+
+
+#pragma once
+
+#include "Noise.h"
+
+#define FAST_FLOOR(x) (((x) < 0) ? (((int)x) - 1) : ((int)x))
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cInterpolCell2D:
+
+template <typename T>
+class cInterpolCell2D
+{
+public:
+	cInterpolCell2D(
+		const cNoise & a_Noise,    ///< Noise to use for generating the random values
+		NOISE_DATATYPE * a_Array,  ///< Array to generate into [x + a_SizeX * y]
+		int a_SizeX, int a_SizeY,  ///< Count of the array, in each direction
+		const NOISE_DATATYPE * a_FracX,  ///< Pointer to the array that stores the X fractional values
+		const NOISE_DATATYPE * a_FracY   ///< Pointer to the attay that stores the Y fractional values
+	):
+		m_Noise(a_Noise),
+		m_WorkRnds(&m_Workspace1),
+		m_CurFloorX(0),
+		m_CurFloorY(0),
+		m_Array(a_Array),
+		m_SizeX(a_SizeX),
+		m_SizeY(a_SizeY),
+		m_FracX(a_FracX),
+		m_FracY(a_FracY)
+	{
+	}
+	
+
+	/** Generates part of the output noise array using the current m_WorkRnds[] values */
+	void Generate(
+		int a_FromX, int a_ToX,
+		int a_FromY, int a_ToY
+	)
+	{
+		for (int y = a_FromY; y < a_ToY; y++)
+		{
+			NOISE_DATATYPE Interp[2];
+			NOISE_DATATYPE FracY = T::coeff(m_FracY[y]);
+			Interp[0] = Lerp((*m_WorkRnds)[0][0], (*m_WorkRnds)[0][1], FracY);
+			Interp[1] = Lerp((*m_WorkRnds)[1][0], (*m_WorkRnds)[1][1], FracY);
+			int idx = y * m_SizeX + a_FromX;
+			for (int x = a_FromX; x < a_ToX; x++)
+			{
+				m_Array[idx++] = Lerp(Interp[0], Interp[1], T::coeff(m_FracX[x]));
+			}  // for x
+		}  // for y
+	}
+	
+
+	/** Initializes m_WorkRnds[] with the specified values of the noise at the specified integral coords. */
+	void InitWorkRnds(int a_FloorX, int a_FloorY)
+	{
+		m_CurFloorX = a_FloorX;
+		m_CurFloorY = a_FloorY;
+		(*m_WorkRnds)[0][0] = m_Noise.IntNoise2D(m_CurFloorX,     m_CurFloorY);
+		(*m_WorkRnds)[0][1] = m_Noise.IntNoise2D(m_CurFloorX,     m_CurFloorY + 1);
+		(*m_WorkRnds)[1][0] = m_Noise.IntNoise2D(m_CurFloorX + 1, m_CurFloorY);
+		(*m_WorkRnds)[1][1] = m_Noise.IntNoise2D(m_CurFloorX + 1, m_CurFloorY + 1);
+	}
+	
+
+	/** Updates m_WorkRnds[] for the new integral coords */
+	void Move(int a_NewFloorX, int a_NewFloorY)
+	{
+		// Swap the doublebuffer:
+		int OldFloorX = m_CurFloorX;
+		int OldFloorY = m_CurFloorY;
+		Workspace * OldWorkRnds = m_WorkRnds;
+		m_WorkRnds = (m_WorkRnds == &m_Workspace1) ? &m_Workspace2 : &m_Workspace1;
+	
+		// Reuse as much of the old workspace as possible:
+		// TODO: Try out if simply calculating all 4 elements each time is faster than this monster loop
+		int DiffX = OldFloorX - a_NewFloorX;
+		int DiffY = OldFloorY - a_NewFloorY;
+		for (int x = 0; x < 2; x++)
+		{
+			int cx = a_NewFloorX + x;
+			int OldX = x - DiffX;  // Where would this X be in the old grid?
+			for (int y = 0; y < 2; y++)
+			{
+				int cy = a_NewFloorY + y;
+				int OldY = y - DiffY;  // Where would this Y be in the old grid?
+				if ((OldX >= 0) && (OldX < 2) && (OldY >= 0) && (OldY < 2))
+				{
+					(*m_WorkRnds)[x][y] = (*OldWorkRnds)[OldX][OldY];
+				}
+				else
+				{
+					(*m_WorkRnds)[x][y] = (NOISE_DATATYPE)m_Noise.IntNoise2D(cx, cy);
+				}
+			}
+		}
+		m_CurFloorX = a_NewFloorX;
+		m_CurFloorY = a_NewFloorY;
+	}
+
+protected:
+	typedef NOISE_DATATYPE Workspace[2][2];
+	
+	/** The noise used for generating the values at integral coords. */
+	const cNoise & m_Noise;
+	
+	/** The current random values; points to either m_Workspace1 or m_Workspace2 (doublebuffering) */
+	Workspace * m_WorkRnds;
+
+	/** Buffer 1 for workspace doublebuffering, used in Move() */
+	Workspace m_Workspace1;
+
+	/** Buffer 2 for workspace doublebuffering, used in Move() */
+	Workspace m_Workspace2;
+
+	/** Coords of the currently calculated m_WorkRnds[]. */
+	int m_CurFloorX, m_CurFloorY;
+	
+	/** The output array to generate into. */
+	NOISE_DATATYPE * m_Array;
+
+	/** Dimensions of the output array. */
+	int m_SizeX, m_SizeY;
+
+	/** Arrays holding the fractional values of the coords in each direction. */
+	const NOISE_DATATYPE * m_FracX;
+	const NOISE_DATATYPE * m_FracY;
+} ;
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cInterpolCell3D:
+
+/** Holds a cache of the last calculated integral noise values and interpolates between them en masse.
+Provides a massive optimization for cInterpolNoise.
+Works by calculating multiple noise values (that have the same integral noise coords) at once. The underlying noise values
+needn't be recalculated for these values, only the interpolation is done within the unit cube. */
+template <typename T>
+class cInterpolCell3D
+{
+public:
+	cInterpolCell3D(
+		const cNoise & a_Noise,                 ///< Noise to use for generating the random values
+		NOISE_DATATYPE * a_Array,               ///< Array to generate into [x + a_SizeX * y]
+		int a_SizeX, int a_SizeY, int a_SizeZ,  ///< Count of the array, in each direction
+		const NOISE_DATATYPE * a_FracX,         ///< Pointer to the array that stores the X fractional values
+		const NOISE_DATATYPE * a_FracY,         ///< Pointer to the attay that stores the Y fractional values
+		const NOISE_DATATYPE * a_FracZ          ///< Pointer to the array that stores the Z fractional values
+	):
+		m_Noise(a_Noise),
+		m_WorkRnds(&m_Workspace1),
+		m_CurFloorX(0),
+		m_CurFloorY(0),
+		m_CurFloorZ(0),
+		m_Array(a_Array),
+		m_SizeX(a_SizeX),
+		m_SizeY(a_SizeY),
+		m_SizeZ(a_SizeZ),
+		m_FracX(a_FracX),
+		m_FracY(a_FracY),
+		m_FracZ(a_FracZ)
+	{
+	}
+
+
+	/** Generates part of the output array using current m_WorkRnds[]. */
+	void Generate(
+		int a_FromX, int a_ToX,
+		int a_FromY, int a_ToY,
+		int a_FromZ, int a_ToZ
+	)
+	{
+		for (int z = a_FromZ; z < a_ToZ; z++)
+		{
+			int idxZ = z * m_SizeX * m_SizeY;
+			NOISE_DATATYPE Interp2[2][2];
+			NOISE_DATATYPE FracZ = T::coeff(m_FracZ[z]);
+			for (int x = 0; x < 2; x++)
+			{
+				for (int y = 0; y < 2; y++)
+				{
+					Interp2[x][y] = Lerp((*m_WorkRnds)[x][y][0], (*m_WorkRnds)[x][y][1], FracZ);
+				}
+			}
+			for (int y = a_FromY; y < a_ToY; y++)
+			{
+				NOISE_DATATYPE Interp[2];
+				NOISE_DATATYPE FracY = T::coeff(m_FracY[y]);
+				Interp[0] = Lerp(Interp2[0][0], Interp2[0][1], FracY);
+				Interp[1] = Lerp(Interp2[1][0], Interp2[1][1], FracY);
+				int idx = idxZ + y * m_SizeX + a_FromX;
+				for (int x = a_FromX; x < a_ToX; x++)
+				{
+					m_Array[idx++] = Lerp(Interp[0], Interp[1], T::coeff(m_FracX[x]));
+				}  // for x
+			}  // for y
+		}  // for z
+	}
+
+
+	/** Initializes m_WorkRnds[] with the specified Floor values. */
+	void InitWorkRnds(int a_FloorX, int a_FloorY, int a_FloorZ)
+	{
+		m_CurFloorX = a_FloorX;
+		m_CurFloorY = a_FloorY;
+		m_CurFloorZ = a_FloorZ;
+		(*m_WorkRnds)[0][0][0] = (NOISE_DATATYPE)m_Noise.IntNoise3D(m_CurFloorX,     m_CurFloorY,     m_CurFloorZ);
+		(*m_WorkRnds)[0][0][1] = (NOISE_DATATYPE)m_Noise.IntNoise3D(m_CurFloorX,     m_CurFloorY,     m_CurFloorZ + 1);
+		(*m_WorkRnds)[0][1][0] = (NOISE_DATATYPE)m_Noise.IntNoise3D(m_CurFloorX,     m_CurFloorY + 1, m_CurFloorZ);
+		(*m_WorkRnds)[0][1][1] = (NOISE_DATATYPE)m_Noise.IntNoise3D(m_CurFloorX,     m_CurFloorY + 1, m_CurFloorZ + 1);
+		(*m_WorkRnds)[1][0][0] = (NOISE_DATATYPE)m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY,     m_CurFloorZ);
+		(*m_WorkRnds)[1][0][1] = (NOISE_DATATYPE)m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY,     m_CurFloorZ + 1);
+		(*m_WorkRnds)[1][1][0] = (NOISE_DATATYPE)m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY + 1, m_CurFloorZ);
+		(*m_WorkRnds)[1][1][1] = (NOISE_DATATYPE)m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY + 1, m_CurFloorZ + 1);
+	}
+
+
+	/** Updates m_WorkRnds[] for the new Floor values. */
+	void Move(int a_NewFloorX, int a_NewFloorY, int a_NewFloorZ)
+	{
+		// Swap the doublebuffer:
+		int OldFloorX = m_CurFloorX;
+		int OldFloorY = m_CurFloorY;
+		int OldFloorZ = m_CurFloorZ;
+		Workspace * OldWorkRnds = m_WorkRnds;
+		m_WorkRnds = (m_WorkRnds == &m_Workspace1) ? &m_Workspace2 : &m_Workspace1;
+
+		// Reuse as much of the old workspace as possible:
+		// TODO: Try out if simply calculating all 8 elements each time is faster than this monster loop
+		int DiffX = OldFloorX - a_NewFloorX;
+		int DiffY = OldFloorY - a_NewFloorY;
+		int DiffZ = OldFloorZ - a_NewFloorZ;
+		for (int x = 0; x < 2; x++)
+		{
+			int cx = a_NewFloorX + x;
+			int OldX = x - DiffX;  // Where would this X be in the old grid?
+			for (int y = 0; y < 2; y++)
+			{
+				int cy = a_NewFloorY + y;
+				int OldY = y - DiffY;  // Where would this Y be in the old grid?
+				for (int z = 0; z < 2; z++)
+				{
+					int cz = a_NewFloorZ + z;
+					int OldZ = z - DiffZ;
+					if ((OldX >= 0) && (OldX < 2) && (OldY >= 0) && (OldY < 2) && (OldZ >= 0) && (OldZ < 2))
+					{
+						(*m_WorkRnds)[x][y][z] = (*OldWorkRnds)[OldX][OldY][OldZ];
+					}
+					else
+					{
+						(*m_WorkRnds)[x][y][z] = (NOISE_DATATYPE)m_Noise.IntNoise3D(cx, cy, cz);
+					}
+				}  // for z
+			}  // for y
+		}  // for x
+		m_CurFloorX = a_NewFloorX;
+		m_CurFloorY = a_NewFloorY;
+		m_CurFloorZ = a_NewFloorZ;
+	}
+
+protected:
+	typedef NOISE_DATATYPE Workspace[2][2][2];
+
+	/** The noise used for generating the values at integral coords. */
+	const cNoise & m_Noise;
+
+	/** The current random values; points to either m_Workspace1 or m_Workspace2 (doublebuffering) */
+	Workspace * m_WorkRnds;
+
+	/** Buffer 1 for workspace doublebuffering, used in Move() */
+	Workspace m_Workspace1;
+
+	/** Buffer 2 for workspace doublebuffering, used in Move() */
+	Workspace m_Workspace2;
+
+	/** The integral coords of the currently calculated WorkRnds[] */
+	int m_CurFloorX, m_CurFloorY, m_CurFloorZ;
+
+	/** The output array where the noise is calculated. */
+	NOISE_DATATYPE * m_Array;
+
+	/** Dimensions of the output array. */
+	int m_SizeX, m_SizeY, m_SizeZ;
+
+	/** Arrays holding the fractional values of the coords in each direction. */
+	const NOISE_DATATYPE * m_FracX;
+	const NOISE_DATATYPE * m_FracY;
+	const NOISE_DATATYPE * m_FracZ;
+} ;
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cInterpolNoise:
+
+template <typename T>
+class cInterpolNoise
+{
+	/** Maximum size, for each direction, of the generated array. */
+	static const int MAX_SIZE = 256;
+
+public:
+	cInterpolNoise(int a_Seed):
+		m_Noise(a_Seed)
+	{
+	}
+
+
+	/** Sets a new seed for the generators. Relays the seed to the underlying noise. */
+	void SetSeed(int a_Seed)
+	{
+		m_Noise.SetSeed(a_Seed);
+	}
+
+
+	/** Fills a 2D array with the values of the noise. */
+	void Generate2D(
+		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y]
+		int a_SizeX, int a_SizeY,                        ///< Count of the array, in each direction
+		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
+		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY   ///< Noise-space coords of the array in the Y direction
+	) const
+	{
+		ASSERT(a_SizeX > 0);
+		ASSERT(a_SizeY > 0);
+		ASSERT(a_SizeX < MAX_SIZE);
+		ASSERT(a_SizeY < MAX_SIZE);
+		ASSERT(a_StartX < a_EndX);
+		ASSERT(a_StartY < a_EndY);
+	
+		// Calculate the integral and fractional parts of each coord:
+		int FloorX[MAX_SIZE];
+		int FloorY[MAX_SIZE];
+		NOISE_DATATYPE FracX[MAX_SIZE];
+		NOISE_DATATYPE FracY[MAX_SIZE];
+		int SameX[MAX_SIZE];
+		int SameY[MAX_SIZE];
+		int NumSameX, NumSameY;
+		CalcFloorFrac(a_SizeX, a_StartX, a_EndX, FloorX, FracX, SameX, NumSameX);
+		CalcFloorFrac(a_SizeY, a_StartY, a_EndY, FloorY, FracY, SameY, NumSameY);
+	
+		cInterpolCell2D<T> Cell(m_Noise, a_Array, a_SizeX, a_SizeY, FracX, FracY);
+	
+		Cell.InitWorkRnds(FloorX[0], FloorY[0]);
+	
+		// Calculate query values using Cell:
+		int FromY = 0;
+		for (int y = 0; y < NumSameY; y++)
+		{
+			int ToY = FromY + SameY[y];
+			int FromX = 0;
+			int CurFloorY = FloorY[FromY];
+			for (int x = 0; x < NumSameX; x++)
+			{
+				int ToX = FromX + SameX[x];
+				Cell.Generate(FromX, ToX, FromY, ToY);
+				Cell.Move(FloorX[ToX], CurFloorY);
+				FromX = ToX;
+			}  // for x
+			Cell.Move(FloorX[0], FloorY[ToY]);
+			FromY = ToY;
+		}  // for y
+	}
+
+
+	/** Fills a 3D array with the values of the noise. */
+	void Generate3D(
+		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z]
+		int a_SizeX, int a_SizeY, int a_SizeZ,           ///< Count of the array, in each direction
+		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
+		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
+		NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ   ///< Noise-space coords of the array in the Z direction
+	) const
+	{
+		// Check params:
+		ASSERT(a_SizeX > 1);
+		ASSERT(a_SizeY > 1);
+
+		ASSERT(a_SizeX < MAX_SIZE);
+		ASSERT(a_SizeY < MAX_SIZE);
+		ASSERT(a_SizeZ < MAX_SIZE);
+		ASSERT(a_StartX < a_EndX);
+		ASSERT(a_StartY < a_EndY);
+		ASSERT(a_StartZ < a_EndZ);
+
+		// Calculate the integral and fractional parts of each coord:
+		int FloorX[MAX_SIZE];
+		int FloorY[MAX_SIZE];
+		int FloorZ[MAX_SIZE];
+		NOISE_DATATYPE FracX[MAX_SIZE];
+		NOISE_DATATYPE FracY[MAX_SIZE];
+		NOISE_DATATYPE FracZ[MAX_SIZE];
+		int SameX[MAX_SIZE];
+		int SameY[MAX_SIZE];
+		int SameZ[MAX_SIZE];
+		int NumSameX, NumSameY, NumSameZ;
+		CalcFloorFrac(a_SizeX, a_StartX, a_EndX, FloorX, FracX, SameX, NumSameX);
+		CalcFloorFrac(a_SizeY, a_StartY, a_EndY, FloorY, FracY, SameY, NumSameY);
+		CalcFloorFrac(a_SizeZ, a_StartZ, a_EndZ, FloorZ, FracZ, SameZ, NumSameZ);
+
+		cInterpolCell3D<T> Cell(
+			m_Noise, a_Array,
+			a_SizeX, a_SizeY, a_SizeZ,
+			FracX, FracY, FracZ
+		);
+	
+		Cell.InitWorkRnds(FloorX[0], FloorY[0], FloorZ[0]);
+	
+		// Calculate query values using Cell:
+		int FromZ = 0;
+		for (int z = 0; z < NumSameZ; z++)
+		{
+			int ToZ = FromZ + SameZ[z];
+			int CurFloorZ = FloorZ[FromZ];
+			int FromY = 0;
+			for (int y = 0; y < NumSameY; y++)
+			{
+				int ToY = FromY + SameY[y];
+				int CurFloorY = FloorY[FromY];
+				int FromX = 0;
+				for (int x = 0; x < NumSameX; x++)
+				{
+					int ToX = FromX + SameX[x];
+					Cell.Generate(FromX, ToX, FromY, ToY, FromZ, ToZ);
+					Cell.Move(FloorX[ToX], CurFloorY, CurFloorZ);
+					FromX = ToX;
+				}
+				Cell.Move(FloorX[0], FloorY[ToY], CurFloorZ);
+				FromY = ToY;
+			}  // for y
+			Cell.Move(FloorX[0], FloorY[0], FloorZ[ToZ]);
+			FromZ = ToZ;
+		}  // for z
+	}
+
+protected:
+
+	/** The noise used for the underlying value generation. */
+	cNoise m_Noise;
+
+
+	/** Calculates the integral and fractional parts along one axis.
+	a_Floor will receive the integral parts (array of a_Size ints).
+	a_Frac will receive the fractional parts (array of a_Size floats).
+	a_Same will receive the counts of items that have the same integral parts (array of up to a_Size ints).
+	a_NumSame will receive the count of a_Same elements (total count of different integral parts). */
+	void CalcFloorFrac(
+		int a_Size,
+		NOISE_DATATYPE a_Start, NOISE_DATATYPE a_End,
+		int * a_Floor, NOISE_DATATYPE * a_Frac,
+		int * a_Same, int & a_NumSame
+	) const
+	{
+		ASSERT(a_Size > 0);
+
+		// Calculate the floor and frac values:
+		NOISE_DATATYPE val = a_Start;
+		NOISE_DATATYPE dif = (a_End - a_Start) / (a_Size - 1);
+		for (int i = 0; i < a_Size; i++)
+		{
+			a_Floor[i] = FAST_FLOOR(val);
+			a_Frac[i] = val - a_Floor[i];
+			val += dif;
+		}
+
+		// Mark up the same floor values into a_Same / a_NumSame:
+		int CurFloor = a_Floor[0];
+		int LastSame = 0;
+		a_NumSame = 0;
+		for (int i = 1; i < a_Size; i++)
+		{
+			if (a_Floor[i] != CurFloor)
+			{
+				a_Same[a_NumSame] = i - LastSame;
+				LastSame = i;
+				a_NumSame += 1;
+				CurFloor = a_Floor[i];
+			}
+		}  // for i - a_Floor[]
+		if (LastSame < a_Size)
+		{
+			a_Same[a_NumSame] = a_Size - LastSame;
+			a_NumSame += 1;
+		}
+	}
+};
+
+
+
+
+
+/** A fifth-degree curve for interpolating.
+Implemented as a functor for better chance of inlining. */
+struct Interp5Deg
+{
+	static NOISE_DATATYPE coeff(NOISE_DATATYPE a_Val)
+	{
+		return a_Val * a_Val * a_Val * (a_Val * (a_Val * 6 - 15) + 10);
+	}
+};
+
+typedef cInterpolNoise<Interp5Deg> cInterp5DegNoise;
+
+
+
diff --git a/src/Noise.cpp b/src/Noise/Noise.cpp
index 8fcfe2920..0249ab6c1 100644
--- a/src/Noise.cpp
+++ b/src/Noise/Noise.cpp
@@ -9,10 +9,110 @@
 
 
 
+#if 0
+/** cImprovedPerlin noise test suite:
+- Generate a rather large 2D and 3D noise array and output it to a file
+- Compare performance of cCubicNoise and cImprovedNoise, both in single-value and 3D-array usages */
+static class cImprovedPerlinNoiseTest
+{
+public:
+	cImprovedPerlinNoiseTest(void)
+	{
+		printf("Performing Improved Perlin Noise tests...\n");
+		TestImage();
+		TestSpeed();
+		TestSpeedArr();
+		printf("Improved Perlin Noise tests complete.\n");
+	}
+
+
+	/** Tests the noise by generating 2D and 3D images and dumping them to files. */
+	void TestImage(void)
+	{
+		static const int SIZE_X = 256;
+		static const int SIZE_Y = 256;
+		static const int SIZE_Z = 16;
+
+		cImprovedNoise noise(1);
+		std::unique_ptr<NOISE_DATATYPE[]> arr(new NOISE_DATATYPE[SIZE_X * SIZE_Y * SIZE_Z]);
+		noise.Generate3D(arr.get(), SIZE_X, SIZE_Y, SIZE_Z, 0, 14, 0, 14, 0, 14);
+		Debug3DNoise(arr.get(), SIZE_X, SIZE_Y, SIZE_Z, "ImprovedPerlinNoiseTest3D", 128);
+		noise.Generate2D(arr.get(), SIZE_X, SIZE_Y, 0, 14, 15, 28);
+		Debug2DNoise(arr.get(), SIZE_X, SIZE_Y, "ImprovedPerlinNoiseTest2D", 128);
+	}
+
+
+	/** Tests the speeds of cImprovedPerlin and cCubicNoise when generating individual values. */
+	void TestSpeed(void)
+	{
+		cImprovedNoise improvedNoise(1);
+		cNoise         noise(1);
+		cTimer timer;
+
+		// Measure the improvedNoise:
+		NOISE_DATATYPE sum = 0;
+		long long start = timer.GetNowTime();
+		for (int i = 0; i < 100000000; i++)
+		{
+			sum += improvedNoise.GetValueAt(i, 0, -i);
+		}
+		long long finish = timer.GetNowTime();
+		printf("cImprovedNoise took %.2f seconds; total is %f.\n", static_cast<float>(finish - start) / 1000.0f, sum);
+
+		// Measure the cubicNoise:
+		sum = 0;
+		start = timer.GetNowTime();
+		for (int i = 0; i < 100000000; i++)
+		{
+			sum += noise.IntNoise3D(i, 0, -i);
+		}
+		finish = timer.GetNowTime();
+		printf("cCubicNoise took %.2f seconds; total is %f.\n", static_cast<float>(finish - start) / 1000.0f, sum);
+	}
+
+
+	/** Tests the speeds of cImprovedPerlin and cCubicNoise when generating arrays. */
+	void TestSpeedArr(void)
+	{
+		static const int SIZE_X = 256;
+		static const int SIZE_Y = 256;
+		static const int SIZE_Z = 16;
+
+		std::unique_ptr<NOISE_DATATYPE[]> arr(new NOISE_DATATYPE[SIZE_X * SIZE_Y * SIZE_Z]);
+		cTimer timer;
+		cImprovedNoise improvedNoise(1);
+		cCubicNoise    cubicNoise(1);
+
+		// Measure the improvedNoise:
+		long long start = timer.GetNowTime();
+		for (int i = 0; i < 40; i++)
+		{
+			improvedNoise.Generate3D(arr.get(), SIZE_X, SIZE_Y, SIZE_Z, 0, 14, 0, 14, 0, 14);
+		}
+		long long finish = timer.GetNowTime();
+		printf("cImprovedNoise(arr) took %.2f seconds.\n", static_cast<float>(finish - start) / 1000.0f);
+
+		// Measure the cubicNoise:
+		start = timer.GetNowTime();
+		for (int i = 0; i < 40; i++)
+		{
+			cubicNoise.Generate3D(arr.get(), SIZE_X, SIZE_Y, SIZE_Z, 0, 14, 0, 14, 0, 14);
+		}
+		finish = timer.GetNowTime();
+		printf("cCubicNoise(arr) took %.2f seconds.\n", static_cast<float>(finish - start) / 1000.0f);
+	}
+} g_Test;
+
+#endif
+
+
+
+
+
 ////////////////////////////////////////////////////////////////////////////////
 // Globals:
 
-void Debug3DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int a_SizeZ, const AString & a_FileNameBase)
+void Debug3DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int a_SizeZ, const AString & a_FileNameBase, NOISE_DATATYPE a_Coeff)
 {
 	const int BUF_SIZE = 512;
 	ASSERT(a_SizeX <= BUF_SIZE);  // Just stretch it, if needed
@@ -29,7 +129,7 @@ void Debug3DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int
 				unsigned char buf[BUF_SIZE];
 				for (int x = 0; x < a_SizeX; x++)
 				{
-					buf[x] = (unsigned char)(std::min(255, std::max(0, (int)(128 + 32 * a_Noise[idx++]))));
+					buf[x] = static_cast<unsigned char>(Clamp((int)(128 + a_Coeff * a_Noise[idx++]), 0, 255));
 				}
 				f1.Write(buf, a_SizeX);
 			}  // for y
@@ -50,7 +150,7 @@ void Debug3DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int
 				unsigned char buf[BUF_SIZE];
 				for (int x = 0; x < a_SizeX; x++)
 				{
-					buf[x] = (unsigned char)(std::min(255, std::max(0, (int)(128 + 32 * a_Noise[idx++]))));
+					buf[x] = static_cast<unsigned char>(Clamp((int)(128 + a_Coeff * a_Noise[idx++]), 0, 255));
 				}
 				f2.Write(buf, a_SizeX);
 			}  // for z
@@ -65,7 +165,7 @@ void Debug3DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int
 
 
 
-void Debug2DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, const AString & a_FileNameBase)
+void Debug2DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, const AString & a_FileNameBase, NOISE_DATATYPE a_Coeff)
 {
 	const int BUF_SIZE = 512;
 	ASSERT(a_SizeX <= BUF_SIZE);  // Just stretch it, if needed
@@ -79,7 +179,7 @@ void Debug2DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, cons
 			unsigned char buf[BUF_SIZE];
 			for (int x = 0; x < a_SizeX; x++)
 			{
-				buf[x] = (unsigned char)(std::min(255, std::max(0, (int)(128 + 32 * a_Noise[idx++]))));
+				buf[x] = static_cast<unsigned char>(Clamp((int)(128 + a_Coeff * a_Noise[idx++]), 0, 255));
 			}
 			f1.Write(buf, a_SizeX);
 		}  // for y
@@ -594,13 +694,6 @@ NOISE_DATATYPE cNoise::CubicNoise3D(NOISE_DATATYPE a_X, NOISE_DATATYPE a_Y, NOIS
 ////////////////////////////////////////////////////////////////////////////////
 // cCubicNoise:
 
-#ifdef _DEBUG
-	int cCubicNoise::m_NumSingleX = 0;
-	int cCubicNoise::m_NumSingleXY = 0;
-	int cCubicNoise::m_NumSingleY = 0;
-	int cCubicNoise::m_NumCalls = 0;
-#endif  // _DEBUG
-
 cCubicNoise::cCubicNoise(int a_Seed) :
 	m_Noise(a_Seed)
 {
@@ -639,23 +732,6 @@ void cCubicNoise::Generate2D(
 	
 	Cell.InitWorkRnds(FloorX[0], FloorY[0]);
 	
-	#ifdef _DEBUG
-		// Statistics on the noise-space coords:
-		if (NumSameX == 1)
-		{
-			m_NumSingleX++;
-			if (NumSameY == 1)
-			{
-				m_NumSingleXY++;
-			}
-		}
-		if (NumSameY == 1)
-		{
-			m_NumSingleY++;
-		}
-		m_NumCalls++;
-	#endif  // _DEBUG
-	
 	// Calculate query values using Cell:
 	int FromY = 0;
 	for (int y = 0; y < NumSameY; y++)
@@ -792,101 +868,28 @@ void cCubicNoise::CalcFloorFrac(
 
 
 ////////////////////////////////////////////////////////////////////////////////
-// cPerlinNoise:
-
-cPerlinNoise::cPerlinNoise(void) :
-	m_Seed(0)
-{
-}
-
-
-
+// cImprovedNoise:
 
-
-cPerlinNoise::cPerlinNoise(int a_Seed) :
-	m_Seed(a_Seed)
-{
-}
-
-
-
-
-
-void cPerlinNoise::SetSeed(int a_Seed)
-{
-	m_Seed = a_Seed;
-}
-
-
-
-
-
-void cPerlinNoise::AddOctave(float a_Frequency, float a_Amplitude)
-{
-	m_Octaves.push_back(cOctave(m_Seed * ((int)m_Octaves.size() + 4) * 4 + 1024, a_Frequency, a_Amplitude));
-}
-
-
-
-
-
-void cPerlinNoise::Generate2D(
-	NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y]
-	int a_SizeX, int a_SizeY,                        ///< Count of the array, in each direction
-	NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
-	NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
-	NOISE_DATATYPE * a_Workspace                     ///< Workspace that this function can use and trash
-) const
+cImprovedNoise::cImprovedNoise(int a_Seed)
 {
-	if (m_Octaves.empty())
-	{
-		// No work to be done
-		ASSERT(!"Perlin: No octaves to generate!");
-		return;
-	}
-	
-	bool ShouldFreeWorkspace = (a_Workspace == nullptr);
-	int ArrayCount = a_SizeX * a_SizeY;
-	if (ShouldFreeWorkspace)
-	{
-		a_Workspace = new NOISE_DATATYPE[ArrayCount];
-	}
-	
-	// Generate the first octave directly into array:
-	const cOctave & FirstOctave = m_Octaves.front();
-	
-	FirstOctave.m_Noise.Generate2D(
-		a_Workspace, a_SizeX, a_SizeY,
-		a_StartX * FirstOctave.m_Frequency, a_EndX * FirstOctave.m_Frequency,
-		a_StartY * FirstOctave.m_Frequency, a_EndY * FirstOctave.m_Frequency
-	);
-	NOISE_DATATYPE Amplitude = FirstOctave.m_Amplitude;
-	for (int i = 0; i < ArrayCount; i++)
+	// Initialize the permutations with identity:
+	for (int i = 0; i < 256; i++)
 	{
-		a_Array[i] = a_Workspace[i] * Amplitude;
+		m_Perm[i] = i;
 	}
-	
-	// Add each octave:
-	for (cOctaves::const_iterator itr = m_Octaves.begin() + 1, end = m_Octaves.end(); itr != end; ++itr)
+
+	// Randomize the permutation table - swap each element with a random other element:
+	cNoise noise(a_Seed);
+	for (int i = 0; i < 256; i++)
 	{
-		// Generate cubic noise for the octave:
-		itr->m_Noise.Generate2D(
-			a_Workspace, a_SizeX, a_SizeY,
-			a_StartX * itr->m_Frequency, a_EndX * itr->m_Frequency,
-			a_StartY * itr->m_Frequency, a_EndY * itr->m_Frequency
-		);
-		// Add the cubic noise into the output:
-		NOISE_DATATYPE Amplitude = itr->m_Amplitude;
-		for (int i = 0; i < ArrayCount; i++)
-		{
-			a_Array[i] += a_Workspace[i] * Amplitude;
-		}
+		int rnd = (noise.IntNoise1DInt(i) / 7) % 256;
+		std::swap(m_Perm[i], m_Perm[rnd]);
 	}
-	
-	if (ShouldFreeWorkspace)
+
+	// Copy the lower 256 entries into upper 256 entries:
+	for (int i = 0; i < 256; i++)
 	{
-		delete[] a_Workspace;
-		a_Workspace = nullptr;
+		m_Perm[i + 256] = m_Perm[i];
 	}
 }
 
@@ -894,239 +897,132 @@ void cPerlinNoise::Generate2D(
 
 
 
-void cPerlinNoise::Generate3D(
-	NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z]
-	int a_SizeX, int a_SizeY, int a_SizeZ,           ///< Count of the array, in each direction
-	NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
-	NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
-	NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ,  ///< Noise-space coords of the array in the Z direction
-	NOISE_DATATYPE * a_Workspace                     ///< Workspace that this function can use and trash
+void cImprovedNoise::Generate2D(
+	NOISE_DATATYPE * a_Array,
+	int a_SizeX, int a_SizeY,
+	NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,
+	NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY
 ) const
 {
-	if (m_Octaves.empty())
-	{
-		// No work to be done
-		ASSERT(!"Perlin: No octaves to generate!");
-		return;
-	}
-	
-	bool ShouldFreeWorkspace = (a_Workspace == nullptr);
-	int ArrayCount = a_SizeX * a_SizeY * a_SizeZ;
-	if (ShouldFreeWorkspace)
+	size_t idx = 0;
+	for (int y = 0; y < a_SizeY; y++)
 	{
-		a_Workspace = new NOISE_DATATYPE[ArrayCount];
-	}
-	
-	// Generate the first octave directly into array:
-	const cOctave & FirstOctave = m_Octaves.front();
-
-	FirstOctave.m_Noise.Generate3D(
-		a_Workspace, a_SizeX, a_SizeY, a_SizeZ,
-		a_StartX * FirstOctave.m_Frequency, a_EndX * FirstOctave.m_Frequency,
-		a_StartY * FirstOctave.m_Frequency, a_EndY * FirstOctave.m_Frequency,
-		a_StartZ * FirstOctave.m_Frequency, a_EndZ * FirstOctave.m_Frequency
-	);
-	NOISE_DATATYPE Amplitude = FirstOctave.m_Amplitude;
-	for (int i = 0; i < ArrayCount; i++)
-	{
-		a_Array[i] = a_Workspace[i] * Amplitude;
-	}
-	
-	// Add each octave:
-	for (cOctaves::const_iterator itr = m_Octaves.begin() + 1, end = m_Octaves.end(); itr != end; ++itr)
-	{
-		// Generate cubic noise for the octave:
-		itr->m_Noise.Generate3D(
-			a_Workspace, a_SizeX, a_SizeY, a_SizeZ,
-			a_StartX * itr->m_Frequency, a_EndX * itr->m_Frequency,
-			a_StartY * itr->m_Frequency, a_EndY * itr->m_Frequency,
-			a_StartZ * itr->m_Frequency, a_EndZ * itr->m_Frequency
-		);
-		// Add the cubic noise into the output:
-		NOISE_DATATYPE Amplitude = itr->m_Amplitude;
-		for (int i = 0; i < ArrayCount; i++)
+		NOISE_DATATYPE ratioY = static_cast<NOISE_DATATYPE>(y) / (a_SizeY - 1);
+		NOISE_DATATYPE noiseY = Lerp(a_StartY, a_EndY, ratioY);
+		int noiseYInt = FAST_FLOOR(noiseY);
+		int yCoord = noiseYInt & 255;
+		NOISE_DATATYPE noiseYFrac = noiseY - noiseYInt;
+		NOISE_DATATYPE fadeY = Fade(noiseYFrac);
+		for (int x = 0; x < a_SizeX; x++)
 		{
-			a_Array[i] += a_Workspace[i] * Amplitude;
-		}
-	}
-	
-	if (ShouldFreeWorkspace)
-	{
-		delete[] a_Workspace;
-		a_Workspace = nullptr;
-	}
-}
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-// cRidgedMultiNoise:
-
-cRidgedMultiNoise::cRidgedMultiNoise(void) :
-	m_Seed(0)
-{
-}
-
-
-
-
-
-cRidgedMultiNoise::cRidgedMultiNoise(int a_Seed) :
-	m_Seed(a_Seed)
-{
-}
-
-
-
-
-
-void cRidgedMultiNoise::SetSeed(int a_Seed)
-{
-	m_Seed = a_Seed;
-}
-
-
-
-
-
-void cRidgedMultiNoise::AddOctave(float a_Frequency, float a_Amplitude)
-{
-	m_Octaves.push_back(cOctave(m_Seed * ((int)m_Octaves.size() + 4) * 4 + 1024, a_Frequency, a_Amplitude));
+			NOISE_DATATYPE ratioX = static_cast<NOISE_DATATYPE>(x) / (a_SizeX - 1);
+			NOISE_DATATYPE noiseX = Lerp(a_StartX, a_EndX, ratioX);
+			int noiseXInt = FAST_FLOOR(noiseX);
+			int xCoord = noiseXInt & 255;
+			NOISE_DATATYPE noiseXFrac = noiseX - noiseXInt;
+			NOISE_DATATYPE fadeX = Fade(noiseXFrac);
+
+			// Hash the coordinates:
+			int A  = m_Perm[xCoord] + yCoord;
+			int AA = m_Perm[A];
+			int AB = m_Perm[A + 1];
+			int B  = m_Perm[xCoord + 1] + yCoord;
+			int BA = m_Perm[B];
+			int BB = m_Perm[B + 1];
+
+			// Lerp the gradients:
+			a_Array[idx++] = Lerp(
+				Lerp(Grad(m_Perm[AA], noiseXFrac, noiseYFrac,     0), Grad(m_Perm[BA], noiseXFrac - 1, noiseYFrac,     0), fadeX),
+				Lerp(Grad(m_Perm[AB], noiseXFrac, noiseYFrac - 1, 0), Grad(m_Perm[BB], noiseXFrac - 1, noiseYFrac - 1, 0), fadeX),
+				fadeY
+			);
+		}  // for x
+	}  // for y
 }
 
 
 
 
 
-void cRidgedMultiNoise::Generate2D(
-	NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y]
-	int a_SizeX, int a_SizeY,                        ///< Count of the array, in each direction
-	NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
-	NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
-	NOISE_DATATYPE * a_Workspace                     ///< Workspace that this function can use and trash
+void cImprovedNoise::Generate3D(
+	NOISE_DATATYPE * a_Array,
+	int a_SizeX, int a_SizeY, int a_SizeZ,
+	NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,
+	NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,
+	NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ
 ) const
 {
-	if (m_Octaves.empty())
-	{
-		// No work to be done
-		ASSERT(!"RidgedMulti: No octaves to generate!");
-		return;
-	}
-	
-	bool ShouldFreeWorkspace = (a_Workspace == nullptr);
-	int ArrayCount = a_SizeX * a_SizeY;
-	if (ShouldFreeWorkspace)
-	{
-		a_Workspace = new NOISE_DATATYPE[ArrayCount];
-	}
-	
-	// Generate the first octave directly into array:
-	const cOctave & FirstOctave = m_Octaves.front();
-	
-	FirstOctave.m_Noise.Generate2D(
-		a_Workspace, a_SizeX, a_SizeY,
-		a_StartX * FirstOctave.m_Frequency, a_EndX * FirstOctave.m_Frequency,
-		a_StartY * FirstOctave.m_Frequency, a_EndY * FirstOctave.m_Frequency
-	);
-	NOISE_DATATYPE Amplitude = FirstOctave.m_Amplitude;
-	for (int i = 0; i < ArrayCount; i++)
+	size_t idx = 0;
+	for (int z = 0; z < a_SizeZ; z++)
 	{
-		a_Array[i] = fabs(a_Workspace[i] * Amplitude);
-	}
-	
-	// Add each octave:
-	for (cOctaves::const_iterator itr = m_Octaves.begin() + 1, end = m_Octaves.end(); itr != end; ++itr)
-	{
-		// Generate cubic noise for the octave:
-		itr->m_Noise.Generate2D(
-			a_Workspace, a_SizeX, a_SizeY,
-			a_StartX * itr->m_Frequency, a_EndX * itr->m_Frequency,
-			a_StartY * itr->m_Frequency, a_EndY * itr->m_Frequency
-		);
-		// Add the cubic noise into the output:
-		NOISE_DATATYPE Amplitude = itr->m_Amplitude;
-		for (int i = 0; i < ArrayCount; i++)
+		NOISE_DATATYPE ratioZ = static_cast<NOISE_DATATYPE>(z) / (a_SizeZ - 1);
+		NOISE_DATATYPE noiseZ = Lerp(a_StartZ, a_EndZ, ratioZ);
+		int noiseZInt = FAST_FLOOR(noiseZ);
+		int zCoord = noiseZInt & 255;
+		NOISE_DATATYPE noiseZFrac = noiseZ - noiseZInt;
+		NOISE_DATATYPE fadeZ = Fade(noiseZFrac);
+		for (int y = 0; y < a_SizeY; y++)
 		{
-			a_Array[i] += fabs(a_Workspace[i] * Amplitude);
-		}
-	}
-	
-	if (ShouldFreeWorkspace)
-	{
-		delete[] a_Workspace;
-		a_Workspace = nullptr;
-	}
+			NOISE_DATATYPE ratioY = static_cast<NOISE_DATATYPE>(y) / (a_SizeY - 1);
+			NOISE_DATATYPE noiseY = Lerp(a_StartY, a_EndY, ratioY);
+			int noiseYInt = FAST_FLOOR(noiseY);
+			int yCoord = noiseYInt & 255;
+			NOISE_DATATYPE noiseYFrac = noiseY - noiseYInt;
+			NOISE_DATATYPE fadeY = Fade(noiseYFrac);
+			for (int x = 0; x < a_SizeX; x++)
+			{
+				NOISE_DATATYPE ratioX = static_cast<NOISE_DATATYPE>(x) / (a_SizeX - 1);
+				NOISE_DATATYPE noiseX = Lerp(a_StartX, a_EndX, ratioX);
+				int noiseXInt = FAST_FLOOR(noiseX);
+				int xCoord = noiseXInt & 255;
+				NOISE_DATATYPE noiseXFrac = noiseX - noiseXInt;
+				NOISE_DATATYPE fadeX = Fade(noiseXFrac);
+
+				// Hash the coordinates:
+				int A  = m_Perm[xCoord] + yCoord;
+				int AA = m_Perm[A] + zCoord;
+				int AB = m_Perm[A + 1] + zCoord;
+				int B  = m_Perm[xCoord + 1] + yCoord;
+				int BA = m_Perm[B] + zCoord;
+				int BB = m_Perm[B + 1] + zCoord;
+
+				// Lerp the gradients:
+				// TODO: This may be optimized by swapping the coords and recalculating most lerps only "once every x"
+				a_Array[idx++] = Lerp(
+					Lerp(
+						Lerp(Grad(m_Perm[AA], noiseXFrac, noiseYFrac,     noiseZFrac), Grad(m_Perm[BA], noiseXFrac - 1, noiseYFrac,     noiseZFrac), fadeX),
+						Lerp(Grad(m_Perm[AB], noiseXFrac, noiseYFrac - 1, noiseZFrac), Grad(m_Perm[BB], noiseXFrac - 1, noiseYFrac - 1, noiseZFrac), fadeX),
+						fadeY
+					),
+					Lerp(
+						Lerp(Grad(m_Perm[AA + 1], noiseXFrac, noiseYFrac,     noiseZFrac - 1), Grad(m_Perm[BA + 1], noiseXFrac - 1, noiseYFrac,     noiseZFrac - 1), fadeX),
+						Lerp(Grad(m_Perm[AB + 1], noiseXFrac, noiseYFrac - 1, noiseZFrac - 1), Grad(m_Perm[BB + 1], noiseXFrac - 1, noiseYFrac - 1, noiseZFrac - 1), fadeX),
+						fadeY
+					),
+					fadeZ
+				);
+			}  // for x
+		}  // for y
+	}  // for z
 }
 
 
 
 
 
-void cRidgedMultiNoise::Generate3D(
-	NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z]
-	int a_SizeX, int a_SizeY, int a_SizeZ,           ///< Count of the array, in each direction
-	NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
-	NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
-	NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ,  ///< Noise-space coords of the array in the Z direction
-	NOISE_DATATYPE * a_Workspace                     ///< Workspace that this function can use and trash
-) const
+NOISE_DATATYPE cImprovedNoise::GetValueAt(int a_X, int a_Y, int a_Z)
 {
-	if (m_Octaves.empty())
-	{
-		// No work to be done
-		ASSERT(!"RidgedMulti: No octaves to generate!");
-		return;
-	}
-	
-	bool ShouldFreeWorkspace = (a_Workspace == nullptr);
-	int ArrayCount = a_SizeX * a_SizeY * a_SizeZ;
-	if (ShouldFreeWorkspace)
-	{
-		a_Workspace = new NOISE_DATATYPE[ArrayCount];
-	}
-	
-	// Generate the first octave directly into array:
-	const cOctave & FirstOctave = m_Octaves.front();
-
-	FirstOctave.m_Noise.Generate3D(
-		a_Workspace, a_SizeX, a_SizeY, a_SizeZ,
-		a_StartX * FirstOctave.m_Frequency, a_EndX * FirstOctave.m_Frequency,
-		a_StartY * FirstOctave.m_Frequency, a_EndY * FirstOctave.m_Frequency,
-		a_StartZ * FirstOctave.m_Frequency, a_EndZ * FirstOctave.m_Frequency
-	);
-	NOISE_DATATYPE Amplitude = FirstOctave.m_Amplitude;
-	for (int i = 0; i < ArrayCount; i++)
-	{
-		a_Array[i] = a_Workspace[i] * Amplitude;
-	}
-	
-	// Add each octave:
-	for (cOctaves::const_iterator itr = m_Octaves.begin() + 1, end = m_Octaves.end(); itr != end; ++itr)
-	{
-		// Generate cubic noise for the octave:
-		itr->m_Noise.Generate3D(
-			a_Workspace, a_SizeX, a_SizeY, a_SizeZ,
-			a_StartX * itr->m_Frequency, a_EndX * itr->m_Frequency,
-			a_StartY * itr->m_Frequency, a_EndY * itr->m_Frequency,
-			a_StartZ * itr->m_Frequency, a_EndZ * itr->m_Frequency
-		);
-		// Add the cubic noise into the output:
-		NOISE_DATATYPE Amplitude = itr->m_Amplitude;
-		for (int i = 0; i < ArrayCount; i++)
-		{
-			a_Array[i] += a_Workspace[i] * Amplitude;
-		}
-	}
-	
-	if (ShouldFreeWorkspace)
-	{
-		delete[] a_Workspace;
-		a_Workspace = nullptr;
-	}
+	// Hash the coordinates:
+	a_X = a_X & 255;
+	a_Y = a_Y & 255;
+	a_Z = a_Z & 255;
+	int A  = m_Perm[a_X] + a_Y;
+	int AA = m_Perm[A] + a_Z;
+
+	return Grad(m_Perm[AA], 1, 1, 1);
 }
 
 
 
 
+
diff --git a/src/Noise.h b/src/Noise/Noise.h
index b7a90d5b7..323194bfd 100644
--- a/src/Noise.h
+++ b/src/Noise/Noise.h
@@ -7,22 +7,11 @@
 
 #include <cmath>
 
+/** The datatype used by all the noise generators. */
+typedef float NOISE_DATATYPE;
 
-
-
-
-// Some settings
-#define NOISE_DATATYPE float
-
-
-
-
-
-#ifdef _MSC_VER
-	#define INLINE __forceinline
-#else
-	#define INLINE inline
-#endif
+#include "OctavedNoise.h"
+#include "RidgedNoise.h"
 
 
 
@@ -35,20 +24,20 @@ public:
 	cNoise(const cNoise & a_Noise);
 
 	// The following functions, if not marked INLINE, are about 20 % slower
-	INLINE NOISE_DATATYPE IntNoise1D(int a_X) const;
-	INLINE NOISE_DATATYPE IntNoise2D(int a_X, int a_Y) const;
-	INLINE NOISE_DATATYPE IntNoise3D(int a_X, int a_Y, int a_Z) const;
+	inline NOISE_DATATYPE IntNoise1D(int a_X) const;
+	inline NOISE_DATATYPE IntNoise2D(int a_X, int a_Y) const;
+	inline NOISE_DATATYPE IntNoise3D(int a_X, int a_Y, int a_Z) const;
 
 	// Return a float number in the specified range:
-	INLINE NOISE_DATATYPE IntNoise2DInRange(int a_X, int a_Y, float a_Min, float a_Max) const
+	inline NOISE_DATATYPE IntNoise2DInRange(int a_X, int a_Y, float a_Min, float a_Max) const
 	{
 		return a_Min + std::abs(IntNoise2D(a_X, a_Y)) * (a_Max - a_Min);
 	}
 
 	// Note: These functions have a mod8-irregular chance - each of the mod8 remainders has different chance of occurrence. Divide by 8 to rectify.
-	INLINE int IntNoise1DInt(int a_X) const;
-	INLINE int IntNoise2DInt(int a_X, int a_Y) const;
-	INLINE int IntNoise3DInt(int a_X, int a_Y, int a_Z) const;
+	inline int IntNoise1DInt(int a_X) const;
+	inline int IntNoise2DInt(int a_X, int a_Y) const;
+	inline int IntNoise3DInt(int a_X, int a_Y, int a_Z) const;
 
 	NOISE_DATATYPE LinearNoise1D(NOISE_DATATYPE a_X) const;
 	NOISE_DATATYPE CosineNoise1D(NOISE_DATATYPE a_X) const;
@@ -61,9 +50,9 @@ public:
 
 	void SetSeed(int a_Seed) { m_Seed = a_Seed; }
 
-	INLINE static NOISE_DATATYPE CubicInterpolate (NOISE_DATATYPE a_A, NOISE_DATATYPE a_B, NOISE_DATATYPE a_C, NOISE_DATATYPE a_D, NOISE_DATATYPE a_Pct);
-	INLINE static NOISE_DATATYPE CosineInterpolate(NOISE_DATATYPE a_A, NOISE_DATATYPE a_B, NOISE_DATATYPE a_Pct);
-	INLINE static NOISE_DATATYPE LinearInterpolate(NOISE_DATATYPE a_A, NOISE_DATATYPE a_B, NOISE_DATATYPE a_Pct);
+	inline static NOISE_DATATYPE CubicInterpolate (NOISE_DATATYPE a_A, NOISE_DATATYPE a_B, NOISE_DATATYPE a_C, NOISE_DATATYPE a_D, NOISE_DATATYPE a_Pct);
+	inline static NOISE_DATATYPE CosineInterpolate(NOISE_DATATYPE a_A, NOISE_DATATYPE a_B, NOISE_DATATYPE a_Pct);
+	inline static NOISE_DATATYPE LinearInterpolate(NOISE_DATATYPE a_A, NOISE_DATATYPE a_B, NOISE_DATATYPE a_Pct);
 
 private:
 	int m_Seed;
@@ -76,19 +65,15 @@ private:
 class cCubicNoise
 {
 public:
-	static const int MAX_SIZE = 512;  ///< Maximum size of each dimension of the query arrays.
+	/** Maximum size of each dimension of the query arrays. */
+	static const int MAX_SIZE = 512;
 	
 	
+	/** Creates a new instance with the specified seed. */
 	cCubicNoise(int a_Seed);
 	
 	
-	void Generate1D(
-		NOISE_DATATYPE * a_Array,                        ///< Array to generate into
-		int a_SizeX,                                     ///< Count of the array
-		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX   ///< Noise-space coords of the array
-	) const;
-	
-	
+	/** Fills a 2D array with the values of the noise. */
 	void Generate2D(
 		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y]
 		int a_SizeX, int a_SizeY,                        ///< Count of the array, in each direction
@@ -97,6 +82,7 @@ public:
 	) const;
 	
 	
+	/** Fills a 3D array with the values of the noise. */
 	void Generate3D(
 		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z]
 		int a_SizeX, int a_SizeY, int a_SizeZ,           ///< Count of the array, in each direction
@@ -106,163 +92,87 @@ public:
 	) const;
 	
 protected:
-	typedef NOISE_DATATYPE Workspace1D[4];
-	typedef NOISE_DATATYPE Workspace2D[4][4];
-	
-	cNoise m_Noise;  // Used for integral rnd values
-
-	#ifdef _DEBUG
-		// Statistics on the noise-space coords:
-		static int m_NumSingleX;
-		static int m_NumSingleXY;
-		static int m_NumSingleY;
-		static int m_NumCalls;
-	#endif  // _DEBUG
 	
-	/// Calculates the integral and fractional parts along one axis.
+	/** Noise used for integral random values. */
+	cNoise m_Noise;
+
+
+	/** Calculates the integral and fractional parts along one axis.
+	a_Floor will receive the integral parts (array of a_Size ints).
+	a_Frac will receive the fractional parts (array of a_Size floats).
+	a_Same will receive the counts of items that have the same integral parts (array of up to a_Size ints).
+	a_NumSame will receive the count of a_Same elements (total count of different integral parts). */
 	void CalcFloorFrac(
 		int a_Size,
 		NOISE_DATATYPE a_Start, NOISE_DATATYPE a_End,
 		int * a_Floor, NOISE_DATATYPE * a_Frac,
 		int * a_Same, int & a_NumSame
 	) const;
-	
-	void UpdateWorkRnds2DX(
-		Workspace2D & a_WorkRnds,
-		Workspace1D & a_Interps,
-		int a_LastFloorX, int a_NewFloorX,
-		int a_FloorY,
-		NOISE_DATATYPE a_FractionY
-	) const;
 } ;
 
 
 
 
 
-class cPerlinNoise
+/** Improved noise, as described by Ken Perlin: http://mrl.nyu.edu/~perlin/paper445.pdf
+Implementation adapted from Perlin's Java implementation: http://mrl.nyu.edu/~perlin/noise/ */
+class cImprovedNoise
 {
 public:
-	cPerlinNoise(void);
-	cPerlinNoise(int a_Seed);
-	
-	
-	void SetSeed(int a_Seed);
-	
-	void AddOctave(NOISE_DATATYPE a_Frequency, NOISE_DATATYPE a_Amplitude);
-	
-	void Generate1D(
-		NOISE_DATATYPE * a_Array,                        ///< Array to generate into
-		int a_SizeX,                                     ///< Count of the array
-		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array
-		NOISE_DATATYPE * a_Workspace = nullptr              ///< Workspace that this function can use and trash
-	) const;
-	
-	
+	/** Constructs a new instance of the noise obbject.
+	Note that this operation is quite expensive (the permutation array being constructed). */
+	cImprovedNoise(int a_Seed);
+
+
+	/** Fills a 2D array with the values of the noise. */
 	void Generate2D(
 		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y]
 		int a_SizeX, int a_SizeY,                        ///< Count of the array, in each direction
 		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
-		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
-		NOISE_DATATYPE * a_Workspace = nullptr              ///< Workspace that this function can use and trash
+		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY   ///< Noise-space coords of the array in the Y direction
 	) const;
 	
 	
+	/** Fills a 3D array with the values of the noise. */
 	void Generate3D(
 		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z]
 		int a_SizeX, int a_SizeY, int a_SizeZ,           ///< Count of the array, in each direction
 		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
 		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
-		NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ,  ///< Noise-space coords of the array in the Z direction
-		NOISE_DATATYPE * a_Workspace = nullptr              ///< Workspace that this function can use and trash
+		NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ   ///< Noise-space coords of the array in the Z direction
 	) const;
-	
+
+	/** Returns the value at the specified integral coords. Used for raw speed measurement. */
+	NOISE_DATATYPE GetValueAt(int a_X, int a_Y, int a_Z);
+
 protected:
-	class cOctave
+
+	/** The permutation table used by the noise function. Initialized using seed. */
+	int m_Perm[512];
+
+
+	/** Calculates the fade curve, 6 * t^5 - 15 * t^4 + 10 * t^3. */
+	inline static NOISE_DATATYPE Fade(NOISE_DATATYPE a_T)
 	{
-	public:
-		cCubicNoise m_Noise;
-		
-		NOISE_DATATYPE m_Frequency;  // Coord multiplier
-		NOISE_DATATYPE m_Amplitude;  // Value multiplier
-		
-		cOctave(int a_Seed, NOISE_DATATYPE a_Frequency, NOISE_DATATYPE a_Amplitude) :
-			m_Noise(a_Seed),
-			m_Frequency(a_Frequency),
-			m_Amplitude(a_Amplitude)
-		{
-		}
-	} ;
-	
-	typedef std::vector<cOctave> cOctaves;
-	
-	int      m_Seed;
-	cOctaves m_Octaves;
-} ;
+		return a_T * a_T * a_T * (a_T * (a_T * 6 - 15) + 10);
+	}
 
+	/** Returns the gradient value based on the hash. */
+	inline static NOISE_DATATYPE Grad(int a_Hash, NOISE_DATATYPE a_X, NOISE_DATATYPE a_Y, NOISE_DATATYPE a_Z)
+	{
+		int hash = a_Hash % 16;
+		NOISE_DATATYPE u = (hash < 8) ? a_X : a_Y;
+		NOISE_DATATYPE v = (hash < 4) ? a_Y : (((hash == 12) || (hash == 14)) ? a_X : a_Z);
+		return (((hash & 1) == 0) ? u : -u) + (((hash & 2) == 0) ? v : -v);
+	}
+};
 
 
 
 
-class cRidgedMultiNoise
-{
-public:
-	cRidgedMultiNoise(void);
-	cRidgedMultiNoise(int a_Seed);
-	
-	
-	void SetSeed(int a_Seed);
-	
-	void AddOctave(NOISE_DATATYPE a_Frequency, NOISE_DATATYPE a_Amplitude);
-	
-	void Generate1D(
-		NOISE_DATATYPE * a_Array,                        ///< Array to generate into
-		int a_SizeX,                                     ///< Count of the array
-		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array
-		NOISE_DATATYPE * a_Workspace = nullptr              ///< Workspace that this function can use and trash
-	) const;
-	
-	
-	void Generate2D(
-		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y]
-		int a_SizeX, int a_SizeY,                        ///< Count of the array, in each direction
-		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
-		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
-		NOISE_DATATYPE * a_Workspace = nullptr              ///< Workspace that this function can use and trash
-	) const;
-	
-	
-	void Generate3D(
-		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z]
-		int a_SizeX, int a_SizeY, int a_SizeZ,           ///< Count of the array, in each direction
-		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
-		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
-		NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ,  ///< Noise-space coords of the array in the Z direction
-		NOISE_DATATYPE * a_Workspace = nullptr              ///< Workspace that this function can use and trash
-	) const;
-	
-protected:
-	class cOctave
-	{
-	public:
-		cCubicNoise m_Noise;
-		
-		NOISE_DATATYPE m_Frequency;  // Coord multiplier
-		NOISE_DATATYPE m_Amplitude;  // Value multiplier
-		
-		cOctave(int a_Seed, NOISE_DATATYPE a_Frequency, NOISE_DATATYPE a_Amplitude) :
-			m_Noise(a_Seed),
-			m_Frequency(a_Frequency),
-			m_Amplitude(a_Amplitude)
-		{
-		}
-	} ;
-	
-	typedef std::vector<cOctave> cOctaves;
-	
-	int      m_Seed;
-	cOctaves m_Octaves;
-} ;
+
+typedef cOctavedNoise<cCubicNoise> cPerlinNoise;
+typedef cOctavedNoise<cRidgedNoise<cCubicNoise>> cRidgedMultiNoise;
 
 
 
@@ -376,8 +286,46 @@ NOISE_DATATYPE cNoise::LinearInterpolate(NOISE_DATATYPE a_A, NOISE_DATATYPE a_B,
 ////////////////////////////////////////////////////////////////////////////////
 // Global functions:
 
-extern void Debug2DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, const AString & a_FileNameBase);
-extern void Debug3DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int a_SizeZ, const AString & a_FileNameBase);
+/** Exports the noise array into a file.
+a_Coeff specifies the value that each array value is multiplied by before being converted into a byte. */
+extern void Debug2DNoise(const NOISE_DATATYPE * a_Array, int a_SizeX, int a_SizeY, const AString & a_FileNameBase, NOISE_DATATYPE a_Coeff = 32);
+
+/** Exports the noise array into a set of files, ordered by XY and XZ.
+a_Coeff specifies the value that each array value is multiplied by before being converted into a byte. */
+extern void Debug3DNoise(const NOISE_DATATYPE * a_Array, int a_SizeX, int a_SizeY, int a_SizeZ, const AString & a_FileNameBase, NOISE_DATATYPE a_Coeff = 32);
+
+
+
+
+/** Linearly interpolates between two values.
+Assumes that a_Ratio is in range [0, 1]. */
+inline NOISE_DATATYPE Lerp(NOISE_DATATYPE a_Val1, NOISE_DATATYPE a_Val2, NOISE_DATATYPE a_Ratio)
+{
+	return a_Val1 + (a_Val2 - a_Val1) * a_Ratio;
+}
+
+
+
+
+
+/** Linearly interpolates between two values, clamping the ratio to [0, 1] first. */
+inline NOISE_DATATYPE ClampedLerp(NOISE_DATATYPE a_Val1, NOISE_DATATYPE a_Val2, NOISE_DATATYPE a_Ratio)
+{
+	if (a_Ratio < 0)
+	{
+		return a_Val1;
+	}
+	if (a_Ratio > 1)
+	{
+		return a_Val2;
+	}
+	return Lerp(a_Val1, a_Val2, a_Ratio);
+}
+
+
+
+
+
 
 
 
diff --git a/src/Noise/OctavedNoise.h b/src/Noise/OctavedNoise.h
new file mode 100644
index 000000000..efb9a0167
--- /dev/null
+++ b/src/Noise/OctavedNoise.h
@@ -0,0 +1,196 @@
+
+// OctavedNoise.h
+
+// Implements the cOctavedNoise class template representing a noise generator that layers several octaves of another noise
+
+
+
+
+
+#pragma once
+
+
+
+
+
+template <typename N>
+class cOctavedNoise
+{
+public:
+	cOctavedNoise(int a_Seed = 0):
+		m_Seed(a_Seed)
+	{
+	}
+
+
+	/** Sets a new seed for the generators. Relays the seed to all underlying octaves. */
+	void SetSeed(int a_Seed)
+	{
+		m_Seed = a_Seed;
+		for (auto oct: m_Octaves)
+		{
+			oct->SetSeed(a_Seed);
+		}
+	}
+
+
+	/** Adds a new octave to the list of octaves that compose this noise. */
+	void AddOctave(NOISE_DATATYPE a_Frequency, NOISE_DATATYPE a_Amplitude)
+	{
+		m_Octaves.emplace_back(m_Seed, a_Frequency, a_Amplitude);
+	}
+
+
+	/** Fills a 2D array with the values of the noise. */
+	void Generate2D(
+		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y]
+		int a_SizeX, int a_SizeY,                        ///< Count of the array, in each direction
+		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
+		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
+		NOISE_DATATYPE * a_Workspace = nullptr           ///< Workspace that this function can use and trash.
+	) const
+	{
+		// Check that state is alright:
+		if (m_Octaves.empty())
+		{
+			ASSERT(!"cOctavedNoise: No octaves to generate!");
+			return;
+		}
+
+		// Allocate the workspace on the heap, if it wasn't given:
+		std::unique_ptr<NOISE_DATATYPE[]> workspaceHeap;
+		if (a_Workspace == nullptr)
+		{
+			workspaceHeap.reset(new NOISE_DATATYPE[a_SizeX * a_SizeY]);
+			a_Workspace = workspaceHeap.get();
+		}
+
+		// Generate the first octave directly into array:
+		int ArrayCount = a_SizeX * a_SizeY;
+		{
+			const cOctave & FirstOctave = m_Octaves.front();
+			FirstOctave.m_Noise.Generate2D(
+				a_Workspace, a_SizeX, a_SizeY,
+				a_StartX * FirstOctave.m_Frequency, a_EndX * FirstOctave.m_Frequency,
+				a_StartY * FirstOctave.m_Frequency, a_EndY * FirstOctave.m_Frequency
+			);
+			NOISE_DATATYPE Amplitude = FirstOctave.m_Amplitude;
+			for (int i = 0; i < ArrayCount; i++)
+			{
+				a_Array[i] = a_Workspace[i] * Amplitude;
+			}
+		}
+
+		// Add each octave:
+		for (auto itr = m_Octaves.cbegin() + 1, end = m_Octaves.cend(); itr != end; ++itr)
+		{
+			// Generate the noise for the octave:
+			itr->m_Noise.Generate2D(
+				a_Workspace, a_SizeX, a_SizeY,
+				a_StartX * itr->m_Frequency, a_EndX * itr->m_Frequency,
+				a_StartY * itr->m_Frequency, a_EndY * itr->m_Frequency
+			);
+			// Add it into the output:
+			NOISE_DATATYPE Amplitude = itr->m_Amplitude;
+			for (int i = 0; i < ArrayCount; i++)
+			{
+				a_Array[i] += a_Workspace[i] * Amplitude;
+			}
+		}  // for itr - m_Octaves[]
+	}
+
+
+	/** Fills a 3D array with the values of the noise. */
+	void Generate3D(
+		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z]
+		int a_SizeX, int a_SizeY, int a_SizeZ,           ///< Count of the array, in each direction
+		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
+		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
+		NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ,  ///< Noise-space coords of the array in the Z direction
+		NOISE_DATATYPE * a_Workspace = nullptr           ///< Workspace that this function can use and trash, same size as a_Array
+	) const
+	{
+		// Check that state is alright:
+		if (m_Octaves.empty())
+		{
+			ASSERT(!"cOctavedNoise: No octaves to generate!");
+			return;
+		}
+
+		// Allocate the workspace on the heap, if it wasn't given:
+		std::unique_ptr<NOISE_DATATYPE[]> workspaceHeap;
+		if (a_Workspace == nullptr)
+		{
+			workspaceHeap.reset(new NOISE_DATATYPE[a_SizeX * a_SizeY * a_SizeZ]);
+			a_Workspace = workspaceHeap.get();
+		}
+
+		// Generate the first octave directly into array:
+		int ArrayCount = a_SizeX * a_SizeY * a_SizeZ;
+		{
+			const cOctave & FirstOctave = m_Octaves.front();
+			FirstOctave.m_Noise.Generate3D(
+				a_Workspace, a_SizeX, a_SizeY, a_SizeZ,
+				a_StartX * FirstOctave.m_Frequency, a_EndX * FirstOctave.m_Frequency,
+				a_StartY * FirstOctave.m_Frequency, a_EndY * FirstOctave.m_Frequency,
+				a_StartZ * FirstOctave.m_Frequency, a_EndZ * FirstOctave.m_Frequency
+			);
+			NOISE_DATATYPE Amplitude = FirstOctave.m_Amplitude;
+			for (int i = 0; i < ArrayCount; i++)
+			{
+				a_Array[i] = a_Workspace[i] * Amplitude;
+			}
+		}
+
+		// Add each octave:
+		for (auto itr = m_Octaves.cbegin() + 1, end = m_Octaves.cend(); itr != end; ++itr)
+		{
+			// Generate the noise for the octave:
+			itr->m_Noise.Generate3D(
+				a_Workspace, a_SizeX, a_SizeY, a_SizeZ,
+				a_StartX * itr->m_Frequency, a_EndX * itr->m_Frequency,
+				a_StartY * itr->m_Frequency, a_EndY * itr->m_Frequency,
+				a_StartZ * itr->m_Frequency, a_EndZ * itr->m_Frequency
+			);
+			// Add it into the output:
+			NOISE_DATATYPE Amplitude = itr->m_Amplitude;
+			for (int i = 0; i < ArrayCount; i++)
+			{
+				a_Array[i] += a_Workspace[i] * Amplitude;
+			}
+		}  // for itr - m_Octaves[]
+	}
+
+protected:
+	/** Stores information and state for one octave of the noise. */
+	class cOctave
+	{
+	public:
+		N m_Noise;
+		
+		/** Coord multiplier. */
+		NOISE_DATATYPE m_Frequency;
+
+		/** Value multiplier. */
+		NOISE_DATATYPE m_Amplitude;
+
+		cOctave(int a_Seed, NOISE_DATATYPE a_Frequency, NOISE_DATATYPE a_Amplitude) :
+			m_Noise(a_Seed),
+			m_Frequency(a_Frequency),
+			m_Amplitude(a_Amplitude)
+		{
+		}
+	} ;
+	typedef std::vector<cOctave> cOctaves;
+
+
+	/** The seed used by the underlying generators. */
+	int m_Seed;
+
+	/** The octaves that compose this noise. */
+	cOctaves m_Octaves;
+};
+
+
+
+
diff --git a/src/Noise/RidgedNoise.h b/src/Noise/RidgedNoise.h
new file mode 100644
index 000000000..f59a0512f
--- /dev/null
+++ b/src/Noise/RidgedNoise.h
@@ -0,0 +1,91 @@
+
+// RidgedNoise.h
+
+// Implements the cRidgedNoise template class that generates ridged noise based on another noise provider.
+
+
+
+
+
+#pragma once
+
+
+
+
+
+template <typename N>
+class cRidgedNoise
+{
+public:
+	/** Creates a new instance with the seed set to 0. */
+	cRidgedNoise(void):
+		m_Noise(0)
+	{
+	}
+
+
+	/** Creates a new instance with the specified seed. */
+	cRidgedNoise(int a_Seed):
+		m_Noise(a_Seed)
+	{
+	}
+
+
+	/** Sets the seed for the underlying noise. */
+	void SetSeed(int a_Seed)
+	{
+		m_Noise.SetSeed(a_Seed);
+	}
+
+
+	/** Fills a 2D array with the values of the noise. */
+	void Generate2D(
+		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y]
+		int a_SizeX, int a_SizeY,                        ///< Count of the array, in each direction
+		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
+		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY   ///< Noise-space coords of the array in the Y direction
+	) const
+	{
+		int ArrayCount = a_SizeX * a_SizeY;
+		m_Noise.Generate2D(
+			a_Array, a_SizeX, a_SizeY,
+			a_StartX, a_EndX,
+			a_StartY, a_EndY
+		);
+		for (int i = 0; i < ArrayCount; i++)
+		{
+			a_Array[i] = std::abs(a_Array[i]);
+		}
+	}
+
+
+	/** Fills a 3D array with the values of the noise. */
+	void Generate3D(
+		NOISE_DATATYPE * a_Array,                        ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z]
+		int a_SizeX, int a_SizeY, int a_SizeZ,           ///< Count of the array, in each direction
+		NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX,  ///< Noise-space coords of the array in the X direction
+		NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY,  ///< Noise-space coords of the array in the Y direction
+		NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ   ///< Noise-space coords of the array in the Z direction
+	) const
+	{
+		int ArrayCount = a_SizeX * a_SizeY * a_SizeZ;
+		m_Noise.Generate2D(
+			a_Array, a_SizeX, a_SizeY, a_SizeZ,
+			a_StartX, a_EndX,
+			a_StartY, a_EndY,
+			a_StartZ, a_EndZ
+		);
+		for (int i = 0; i < ArrayCount; i++)
+		{
+			a_Array[i] = std::abs(a_Array[i]);
+		}
+	}
+
+protected:
+	N m_Noise;
+} ;
+
+
+
+
+
diff --git a/src/OSSupport/CMakeLists.txt b/src/OSSupport/CMakeLists.txt
index c3eabeef6..e943ceb18 100644
--- a/src/OSSupport/CMakeLists.txt
+++ b/src/OSSupport/CMakeLists.txt
@@ -13,11 +13,10 @@ SET (SRCS
 	IsThread.cpp
 	ListenThread.cpp
 	Semaphore.cpp
-	Sleep.cpp
 	Socket.cpp
 	SocketThreads.cpp
-	Thread.cpp
-	Timer.cpp)
+	StackTrace.cpp
+)
 
 SET (HDRS
 	CriticalSection.h
@@ -29,11 +28,10 @@ SET (HDRS
 	ListenThread.h
 	Queue.h
 	Semaphore.h
-	Sleep.h
 	Socket.h
 	SocketThreads.h
-	Thread.h
-	Timer.h)
+	StackTrace.h
+)
 
 if(NOT MSVC)
 	add_library(OSSupport ${SRCS} ${HDRS})
diff --git a/src/OSSupport/CriticalSection.cpp b/src/OSSupport/CriticalSection.cpp
index 5dfc8b5f9..13a3e4d9f 100644
--- a/src/OSSupport/CriticalSection.cpp
+++ b/src/OSSupport/CriticalSection.cpp
@@ -1,6 +1,5 @@
 
 #include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
-#include "IsThread.h"
 
 
 
@@ -9,41 +8,12 @@
 ////////////////////////////////////////////////////////////////////////////////
 // cCriticalSection:
 
+#ifdef _DEBUG
 cCriticalSection::cCriticalSection()
 {
-	#ifdef _WIN32
-		InitializeCriticalSection(&m_CriticalSection);
-	#else
-		pthread_mutexattr_init(&m_Attributes);
-		pthread_mutexattr_settype(&m_Attributes, PTHREAD_MUTEX_RECURSIVE);
-
-		if (pthread_mutex_init(&m_CriticalSection, &m_Attributes) != 0)
-		{
-			LOGERROR("Could not initialize Critical Section!");
-		}
-	#endif
-	
-	#ifdef _DEBUG
-		m_IsLocked = 0;
-	#endif  // _DEBUG
-}
-
-
-
-
-
-cCriticalSection::~cCriticalSection()
-{
-	#ifdef _WIN32
-		DeleteCriticalSection(&m_CriticalSection);
-	#else
-		if (pthread_mutex_destroy(&m_CriticalSection) != 0)
-		{
-			LOGWARNING("Could not destroy Critical Section!");
-		}
-		pthread_mutexattr_destroy(&m_Attributes);
-	#endif
+	m_IsLocked = 0;
 }
+#endif  // _DEBUG
 
 
 
@@ -51,15 +21,11 @@ cCriticalSection::~cCriticalSection()
 
 void cCriticalSection::Lock()
 {
-	#ifdef _WIN32
-		EnterCriticalSection(&m_CriticalSection);
-	#else
-		pthread_mutex_lock(&m_CriticalSection);
-	#endif
+	m_Mutex.lock();
 	
 	#ifdef _DEBUG
 		m_IsLocked += 1;
-		m_OwningThreadID = cIsThread::GetCurrentID();
+		m_OwningThreadID = std::this_thread::get_id();
 	#endif  // _DEBUG
 }
 
@@ -74,11 +40,7 @@ void cCriticalSection::Unlock()
 		m_IsLocked -= 1;
 	#endif  // _DEBUG
 	
-	#ifdef _WIN32
-		LeaveCriticalSection(&m_CriticalSection);
-	#else
-		pthread_mutex_unlock(&m_CriticalSection);
-	#endif
+	m_Mutex.unlock();
 }
 
 
@@ -97,7 +59,7 @@ bool cCriticalSection::IsLocked(void)
 
 bool cCriticalSection::IsLockedByCurrentThread(void)
 {
-	return ((m_IsLocked > 0) && (m_OwningThreadID == cIsThread::GetCurrentID()));
+	return ((m_IsLocked > 0) && (m_OwningThreadID == std::this_thread::get_id()));
 }
 #endif  // _DEBUG
 
diff --git a/src/OSSupport/CriticalSection.h b/src/OSSupport/CriticalSection.h
index c3c6e57f0..17fcdfc12 100644
--- a/src/OSSupport/CriticalSection.h
+++ b/src/OSSupport/CriticalSection.h
@@ -1,5 +1,7 @@
 
 #pragma once
+#include <mutex>
+#include <thread>
 
 
 
@@ -8,8 +10,6 @@
 class cCriticalSection
 {
 public:
-	cCriticalSection(void);
-	~cCriticalSection();
 
 	void Lock(void);
 	void Unlock(void);
@@ -17,6 +17,7 @@ public:
 	// IsLocked/IsLockedByCurrentThread are only used in ASSERT statements, but because of the changes with ASSERT they must always be defined
 	// The fake versions (in Release) will not effect the program in any way
 	#ifdef _DEBUG
+	cCriticalSection(void);
 	bool IsLocked(void);
 	bool IsLockedByCurrentThread(void);
 	#else
@@ -27,15 +28,10 @@ public:
 private:
 	#ifdef _DEBUG
 	int           m_IsLocked;  // Number of times this CS is locked
-	unsigned long m_OwningThreadID;
+	std::thread::id m_OwningThreadID;
 	#endif  // _DEBUG
 	
-	#ifdef _WIN32
-		CRITICAL_SECTION m_CriticalSection;
-	#else  // _WIN32
-		pthread_mutex_t     m_CriticalSection;
-		pthread_mutexattr_t m_Attributes;
-	#endif  // else _WIN32
+	std::recursive_mutex m_Mutex;
 } ALIGN_8;
 
 
diff --git a/src/OSSupport/IsThread.cpp b/src/OSSupport/IsThread.cpp
index 1a436623a..94bed1f56 100644
--- a/src/OSSupport/IsThread.cpp
+++ b/src/OSSupport/IsThread.cpp
@@ -5,49 +5,40 @@
 // This class will eventually suupersede the old cThread class
 
 #include "Globals.h"
-
 #include "IsThread.h"
 
 
 
 
 
-// When in MSVC, the debugger provides "thread naming" by catching special exceptions. Interface here:
 #if defined(_MSC_VER) && defined(_DEBUG)
-//
-// Usage: SetThreadName (-1, "MainThread");
-//
-
-// Code adapted from MSDN: http://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx
-
-const DWORD MS_VC_EXCEPTION = 0x406D1388;
-
-#pragma pack(push, 8)
-typedef struct tagTHREADNAME_INFO
-{
-	DWORD  dwType;      // Must be 0x1000.
-	LPCSTR szName;      // Pointer to name (in user addr space).
-	DWORD  dwThreadID;  // Thread ID (-1 = caller thread).
-	DWORD  dwFlags;     // Reserved for future use, must be zero.
-} THREADNAME_INFO;
-#pragma pack(pop)
-
-static void SetThreadName(DWORD dwThreadID, const char * threadName)
-{
-	THREADNAME_INFO info;
-	info.dwType = 0x1000;
-	info.szName = threadName;
-	info.dwThreadID = dwThreadID;
-	info.dwFlags = 0;
+	// Code adapted from MSDN: http://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx
 
-	__try
-	{
-		RaiseException(MS_VC_EXCEPTION, 0, sizeof(info) / sizeof(ULONG_PTR), (ULONG_PTR *)&info);
-	}
-	__except (EXCEPTION_EXECUTE_HANDLER)
+	const DWORD MS_VC_EXCEPTION = 0x406D1388;
+	#pragma pack(push, 8)
+		struct THREADNAME_INFO
+		{
+			DWORD  dwType;      // Must be 0x1000.
+			LPCSTR szName;      // Pointer to name (in user addr space).
+			DWORD  dwThreadID;  // Thread ID (-1 = caller thread).
+			DWORD  dwFlags;     // Reserved for future use, must be zero.
+		};
+	#pragma pack(pop)
+
+	/** Sets the name of a thread with the specified ID
+	(When in MSVC, the debugger provides "thread naming" by catching special exceptions)
+	*/
+	static void SetThreadName(std::thread * a_Thread, const char * a_ThreadName)
 	{
+		THREADNAME_INFO info { 0x1000, a_ThreadName, GetThreadId(a_Thread->native_handle()), 0 };
+		__try
+		{
+			RaiseException(MS_VC_EXCEPTION, 0, sizeof(info) / sizeof(ULONG_PTR), (ULONG_PTR *)&info);
+		}
+		__except (EXCEPTION_EXECUTE_HANDLER)
+		{
+		}
 	}
-}
 #endif  // _MSC_VER && _DEBUG
 
 
@@ -57,13 +48,9 @@ static void SetThreadName(DWORD dwThreadID, const char * threadName)
 ////////////////////////////////////////////////////////////////////////////////
 // cIsThread:
 
-cIsThread::cIsThread(const AString & iThreadName) :
+cIsThread::cIsThread(const AString & a_ThreadName) :
 	m_ShouldTerminate(false),
-	m_ThreadName(iThreadName),
-	#ifdef _WIN32
-		m_ThreadID(0),
-	#endif
-	m_Handle(NULL_HANDLE)
+	m_ThreadName(a_ThreadName)
 {
 }
 
@@ -83,35 +70,24 @@ cIsThread::~cIsThread()
 
 bool cIsThread::Start(void)
 {
-	ASSERT(m_Handle == NULL_HANDLE);  // Has already started one thread?
-	#ifdef _WIN32
-		// Create the thread suspended, so that the mHandle variable is valid in the thread procedure
-		m_ThreadID = 0;
-		m_Handle = CreateThread(NULL, 0, thrExecute, this, CREATE_SUSPENDED, &m_ThreadID);
-		if (m_Handle == NULL)
-		{
-			LOGERROR("ERROR: Could not create thread \"%s\", GLE = %u!", m_ThreadName.c_str(), (unsigned)GetLastError());
-			return false;
-		}
-		ResumeThread(m_Handle);
-
-		#if defined(_DEBUG) && defined(_MSC_VER)
-			// Thread naming is available only in MSVC
-			if (!m_ThreadName.empty())
-			{
-				SetThreadName(m_ThreadID, m_ThreadName.c_str());
-			}
-		#endif  // _DEBUG and _MSC_VER
-		
-	#else  // _WIN32
-		if (pthread_create(&m_Handle, NULL, thrExecute, this))
+	try
+	{
+		m_Thread = std::thread(&cIsThread::Execute, this);
+
+		#if defined (_MSC_VER) && defined(_DEBUG)
+		if (!m_ThreadName.empty())
 		{
-			LOGERROR("ERROR: Could not create thread \"%s\", !", m_ThreadName.c_str());
-			return false;
+			SetThreadName(&m_Thread, m_ThreadName.c_str());
 		}
-	#endif  // else _WIN32
+		#endif
 
-	return true;
+		return true;
+	}
+	catch (std::system_error & a_Exception)
+	{
+		LOGERROR("cIsThread::Start error %i: could not construct thread %s; %s", a_Exception.code().value(), m_ThreadName.c_str(), a_Exception.code().message().c_str());
+		return false;
+	}
 }
 
 
@@ -120,10 +96,12 @@ bool cIsThread::Start(void)
 
 void cIsThread::Stop(void)
 {
-	if (m_Handle == NULL_HANDLE)
+	if (!m_Thread.joinable())
 	{
+		// The thread hasn't been started or has already been joined
 		return;
 	}
+
 	m_ShouldTerminate = true;
 	Wait();
 }
@@ -134,59 +112,23 @@ void cIsThread::Stop(void)
 
 bool cIsThread::Wait(void)
 {
-	if (m_Handle == NULL_HANDLE)
+	LOGD("Waiting for thread %s to finish", m_ThreadName.c_str());
+	if (m_Thread.joinable())
 	{
-		return true;
+		try
+		{
+			m_Thread.join();
+			return true;
+		}
+		catch (std::system_error & a_Exception)
+		{
+			LOGERROR("cIsThread::Wait error %i: could not join thread %s; %s", a_Exception.code().value(), m_ThreadName.c_str(), a_Exception.code().message().c_str());
+			return false;
+		}
 	}
-	
-	#ifdef LOGD  // ProtoProxy doesn't have LOGD
-		LOGD("Waiting for thread %s to finish", m_ThreadName.c_str());
-	#endif  // LOGD
-	
-	#ifdef _WIN32
-		int res = WaitForSingleObject(m_Handle, INFINITE);
-		m_Handle = NULL;
-		
-		#ifdef LOGD  // ProtoProxy doesn't have LOGD
-			LOGD("Thread %s finished", m_ThreadName.c_str());
-		#endif  // LOGD
-		
-		return (res == WAIT_OBJECT_0);
-	#else  // _WIN32
-		int res = pthread_join(m_Handle, NULL);
-		m_Handle = NULL_HANDLE;
-		
-		#ifdef LOGD  // ProtoProxy doesn't have LOGD
-			LOGD("Thread %s finished", m_ThreadName.c_str());
-		#endif  // LOGD
-		
-		return (res == 0);
-	#endif  // else _WIN32
-}
-
 
-
-
-
-unsigned long cIsThread::GetCurrentID(void)
-{
-	#ifdef _WIN32
-		return (unsigned long) GetCurrentThreadId();
-	#else
-		return (unsigned long) pthread_self();
-	#endif
-}
-
-
-
-
-bool cIsThread::IsCurrentThread(void) const
-{
-	#ifdef _WIN32
-		return (GetCurrentThreadId() == m_ThreadID);
-	#else
-		return (m_Handle == pthread_self());
-	#endif
+	LOGD("Thread %s finished", m_ThreadName.c_str());
+	return true;
 }
 
 
diff --git a/src/OSSupport/IsThread.h b/src/OSSupport/IsThread.h
index 5c8d28d2d..131c6950e 100644
--- a/src/OSSupport/IsThread.h
+++ b/src/OSSupport/IsThread.h
@@ -16,8 +16,7 @@ In the descending class' constructor call the Start() method to start the thread
 
 
 #pragma once
-#ifndef CISTHREAD_H_INCLUDED
-#define CISTHREAD_H_INCLUDED
+#include <thread>
 
 
 
@@ -33,7 +32,7 @@ protected:
 	volatile bool m_ShouldTerminate;
 
 public:
-	cIsThread(const AString & iThreadName);
+	cIsThread(const AString & a_ThreadName);
 	virtual ~cIsThread();
 
 	/// Starts the thread; returns without waiting for the actual start
@@ -45,56 +44,14 @@ public:
 	/// Waits for the thread to finish. Doesn't signalize the ShouldTerminate flag
 	bool Wait(void);
 
-	/// Returns the OS-dependent thread ID for the caller's thread
-	static unsigned long GetCurrentID(void);
-
 	/** Returns true if the thread calling this function is the thread contained within this object. */
-	bool IsCurrentThread(void) const;
+	bool IsCurrentThread(void) const { return std::this_thread::get_id() == m_Thread.get_id(); }
 
 protected:
 	AString m_ThreadName;
-
-	// Value used for "no handle":
-	#ifdef _WIN32
-		#define NULL_HANDLE NULL
-	#else
-		#define NULL_HANDLE 0
-	#endif
-
-	#ifdef _WIN32
-
-		DWORD m_ThreadID;
-		HANDLE m_Handle;
-
-		static DWORD __stdcall thrExecute(LPVOID a_Param)
-		{
-			// Create a window so that the thread can be identified by 3rd party tools:
-			HWND IdentificationWnd = CreateWindowA("STATIC", ((cIsThread *)a_Param)->m_ThreadName.c_str(), 0, 0, 0, 0, WS_OVERLAPPED, NULL, NULL, NULL, NULL);
-
-			// Run the thread:
-			((cIsThread *)a_Param)->Execute();
-
-			// Destroy the identification window:
-			DestroyWindow(IdentificationWnd);
-
-			return 0;
-		}
-
-	#else  // _WIN32
-
-		pthread_t m_Handle;
-
-		static void * thrExecute(void * a_Param)
-		{
-			(static_cast<cIsThread *>(a_Param))->Execute();
-			return NULL;
-		}
-
-	#endif  // else _WIN32
+	std::thread m_Thread;
 } ;
 
 
 
 
-
-#endif  // CISTHREAD_H_INCLUDED
diff --git a/src/OSSupport/Sleep.cpp b/src/OSSupport/Sleep.cpp
deleted file mode 100644
index 297d668d7..000000000
--- a/src/OSSupport/Sleep.cpp
+++ /dev/null
@@ -1,19 +0,0 @@
-
-#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
-
-#ifndef _WIN32
-	#include <unistd.h>
-#endif
-
-
-
-
-
-void cSleep::MilliSleep( unsigned int a_MilliSeconds)
-{
-#ifdef _WIN32
-	Sleep(a_MilliSeconds);  // Don't tick too much
-#else
-	usleep(a_MilliSeconds*1000);
-#endif
-}
diff --git a/src/OSSupport/Sleep.h b/src/OSSupport/Sleep.h
deleted file mode 100644
index 57d29682c..000000000
--- a/src/OSSupport/Sleep.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#pragma once
-
-class cSleep
-{
-public:
-	static void MilliSleep( unsigned int a_MilliSeconds);
-};
diff --git a/src/OSSupport/Socket.h b/src/OSSupport/Socket.h
index e4ec895cb..9ec8c1111 100644
--- a/src/OSSupport/Socket.h
+++ b/src/OSSupport/Socket.h
@@ -74,7 +74,7 @@ public:
 	inline static bool IsSocketError(int a_ReturnedValue)
 	{
 		#ifdef _WIN32
-			return (a_ReturnedValue == SOCKET_ERROR || a_ReturnedValue == 0);
+			return ((a_ReturnedValue == SOCKET_ERROR) || (a_ReturnedValue == 0));
 		#else
 			return (a_ReturnedValue <= 0);
 		#endif
diff --git a/src/OSSupport/SocketThreads.cpp b/src/OSSupport/SocketThreads.cpp
index 7a3ef4274..153d6ed1d 100644
--- a/src/OSSupport/SocketThreads.cpp
+++ b/src/OSSupport/SocketThreads.cpp
@@ -86,7 +86,8 @@ void cSocketThreads::RemoveClient(const cCallback * a_Client)
 		}
 	}  // for itr - m_Threads[]
 
-	ASSERT(!"Removing an unknown client");
+	// This client wasn't found.
+	// It's not an error, because it may have been removed by a different thread in the meantime.
 }
 
 
@@ -491,10 +492,17 @@ void cSocketThreads::cSocketThread::ReadFromSockets(fd_set * a_Read)
 				{
 					case sSlot::ssNormal:
 					{
-						// Notify the callback that the remote has closed the socket; keep the slot
-						m_Slots[i].m_Client->SocketClosed();
+						// Close the socket on our side:
 						m_Slots[i].m_State = sSlot::ssRemoteClosed;
 						m_Slots[i].m_Socket.CloseSocket();
+
+						// Notify the callback that the remote has closed the socket, *after* removing the socket:
+						cCallback * client = m_Slots[i].m_Client;
+						m_Slots[i] = m_Slots[--m_NumSlots];
+						if (client != nullptr)
+						{
+							client->SocketClosed();
+						}
 						break;
 					}
 					case sSlot::ssWritingRestOut:
diff --git a/src/OSSupport/StackTrace.cpp b/src/OSSupport/StackTrace.cpp
new file mode 100644
index 000000000..a56568457
--- /dev/null
+++ b/src/OSSupport/StackTrace.cpp
@@ -0,0 +1,44 @@
+
+// StackTrace.cpp
+
+// Implements the functions to print current stack traces
+
+#include "Globals.h"
+#include "StackTrace.h"
+#ifdef _WIN32
+	#include "../StackWalker.h"
+#else
+	#include <execinfo.h>
+	#include <unistd.h>
+#endif
+
+
+
+
+
+void PrintStackTrace(void)
+{
+	#ifdef _WIN32
+		// Reuse the StackWalker from the LeakFinder project already bound to MCS
+		// Define a subclass of the StackWalker that outputs everything to stdout
+		class PrintingStackWalker :
+			public StackWalker
+		{
+			virtual void OnOutput(LPCSTR szText) override
+			{
+				puts(szText);
+			}
+		} sw;
+		sw.ShowCallstack();
+	#else
+		// Use the backtrace() function to get and output the stackTrace:
+		// Code adapted from http://stackoverflow.com/questions/77005/how-to-generate-a-stacktrace-when-my-gcc-c-app-crashes
+		void * stackTrace[30];
+		size_t numItems = backtrace(stackTrace, ARRAYCOUNT(stackTrace));
+		backtrace_symbols_fd(stackTrace, numItems, STDERR_FILENO);
+	#endif
+}
+
+
+
+
diff --git a/src/OSSupport/StackTrace.h b/src/OSSupport/StackTrace.h
new file mode 100644
index 000000000..228a00077
--- /dev/null
+++ b/src/OSSupport/StackTrace.h
@@ -0,0 +1,15 @@
+
+// StackTrace.h
+
+// Declares the functions to print current stack trace
+
+
+
+
+
+/** Prints the stacktrace for the current thread. */
+extern void PrintStackTrace(void);
+
+
+
+
diff --git a/src/OSSupport/Thread.cpp b/src/OSSupport/Thread.cpp
deleted file mode 100644
index faaccce96..000000000
--- a/src/OSSupport/Thread.cpp
+++ /dev/null
@@ -1,137 +0,0 @@
-
-#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
-
-
-
-
-
-// When in MSVC, the debugger provides "thread naming" by catching special exceptions. Interface here:
-#ifdef _MSC_VER
-//
-// Usage: SetThreadName (-1, "MainThread");
-//
-
-// Code adapted from MSDN: http://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx
-
-const DWORD MS_VC_EXCEPTION = 0x406D1388;
-
-#pragma pack(push, 8)
-typedef struct tagTHREADNAME_INFO
-{
-	DWORD  dwType;      // Must be 0x1000.
-	LPCSTR szName;      // Pointer to name (in user addr space).
-	DWORD  dwThreadID;  // Thread ID (-1 = caller thread).
-	DWORD  dwFlags;     // Reserved for future use, must be zero.
-} THREADNAME_INFO;
-#pragma pack(pop)
-
-static void SetThreadName(DWORD dwThreadID, const char * threadName)
-{
-	THREADNAME_INFO info;
-	info.dwType = 0x1000;
-	info.szName = threadName;
-	info.dwThreadID = dwThreadID;
-	info.dwFlags = 0;
-
-	__try
-	{
-		RaiseException(MS_VC_EXCEPTION, 0, sizeof(info) / sizeof(ULONG_PTR), (ULONG_PTR *)&info);
-	}
-	__except (EXCEPTION_EXECUTE_HANDLER)
-	{
-	}
-}
-#endif  // _MSC_VER
-
-
-
-
-
-cThread::cThread( ThreadFunc a_ThreadFunction, void* a_Param, const char* a_ThreadName /* = 0 */)
-	: m_ThreadFunction( a_ThreadFunction)
-	, m_Param( a_Param)
-	, m_Event( new cEvent())
-	, m_StopEvent( 0)
-{
-	if (a_ThreadName)
-	{
-		m_ThreadName.assign(a_ThreadName);
-	}
-}
-
-
-
-
-
-cThread::~cThread()
-{
-	delete m_Event;
-	m_Event = NULL;
-	
-	if (m_StopEvent)
-	{
-		m_StopEvent->Wait();
-		delete m_StopEvent;
-		m_StopEvent = NULL;
-	}
-}
-
-
-
-
-
-void cThread::Start( bool a_bWaitOnDelete /* = true */)
-{
-	if (a_bWaitOnDelete)
-		m_StopEvent = new cEvent();
-
-#ifndef _WIN32
-	pthread_t SndThread;
-	if (pthread_create( &SndThread, NULL, MyThread, this))
-		LOGERROR("ERROR: Could not create thread!");
-#else
-	DWORD ThreadID = 0;
-	HANDLE hThread = CreateThread(NULL  // security
-		, 0  // stack size
-		, (LPTHREAD_START_ROUTINE) MyThread  // function name
-		, this  // parameters
-		, 0  // flags
-		, &ThreadID);  // thread id
-	CloseHandle( hThread);
-
-	#ifdef _MSC_VER
-	if (!m_ThreadName.empty())
-	{
-		SetThreadName(ThreadID, m_ThreadName.c_str());
-	}
-	#endif  // _MSC_VER
-#endif
-
-	// Wait until thread has actually been created
-	m_Event->Wait();
-}
-
-
-
-
-
-#ifdef _WIN32
-unsigned long cThread::MyThread(void* a_Param)
-#else
-void *cThread::MyThread( void *a_Param)
-#endif
-{
-	cThread* self = (cThread*)a_Param;
-	cEvent* StopEvent = self->m_StopEvent;
-
-	ThreadFunc* ThreadFunction = self->m_ThreadFunction;
-	void* ThreadParam = self->m_Param;
-
-	// Set event to let other thread know this thread has been created and it's safe to delete the cThread object
-	self->m_Event->Set();
-
-	ThreadFunction( ThreadParam);
-
-	if (StopEvent) StopEvent->Set();
-	return 0;
-}
diff --git a/src/OSSupport/Thread.h b/src/OSSupport/Thread.h
deleted file mode 100644
index 7ee352c82..000000000
--- a/src/OSSupport/Thread.h
+++ /dev/null
@@ -1,26 +0,0 @@
-#pragma once
-
-class cThread
-{
-public:
-	typedef void (ThreadFunc)(void*);
-	cThread( ThreadFunc a_ThreadFunction, void* a_Param, const char* a_ThreadName = 0);
-	~cThread();
-
-	void Start( bool a_bWaitOnDelete = true);
-	void WaitForThread();
-private:
-	ThreadFunc* m_ThreadFunction;
-
-#ifdef _WIN32
-	static unsigned long MyThread(void* a_Param);
-#else
-	static void *MyThread( void *lpParam);
-#endif
-
-	void* m_Param;
-	cEvent* m_Event;
-	cEvent* m_StopEvent;
-
-	AString m_ThreadName;
-};
diff --git a/src/OSSupport/Timer.cpp b/src/OSSupport/Timer.cpp
deleted file mode 100644
index fd838dd0d..000000000
--- a/src/OSSupport/Timer.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-
-#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
-
-#include "Timer.h"
-
-
-
-
-
-
-cTimer::cTimer(void)
-{
-	#ifdef _WIN32
-		QueryPerformanceFrequency(&m_TicksPerSecond);
-	#endif
-}
-
-
-
-
-
-long long cTimer::GetNowTime(void)
-{
-	#ifdef _WIN32
-		LARGE_INTEGER now;
-		QueryPerformanceCounter(&now);
-		return ((now.QuadPart * 1000) / m_TicksPerSecond.QuadPart);
-	#else
-		struct timeval  now;
-		gettimeofday(&now, NULL);
-		return (long long)now.tv_sec * 1000 + (long long)now.tv_usec / 1000;
-	#endif
-}
-
-
-
-
diff --git a/src/OSSupport/Timer.h b/src/OSSupport/Timer.h
deleted file mode 100644
index a059daa41..000000000
--- a/src/OSSupport/Timer.h
+++ /dev/null
@@ -1,32 +0,0 @@
-
-// Timer.h
-
-// Declares the cTimer class representing an OS-independent of retrieving current time with msec accuracy
-
-
-
-
-
-#pragma once
-
-
-
-
-
-class cTimer
-{
-public:
-	cTimer(void);
-
-	// Returns the current time expressed in milliseconds
-	long long GetNowTime(void);
-private:
-
-	#ifdef _WIN32
-		LARGE_INTEGER m_TicksPerSecond;
-	#endif
-} ;
-
-
-
-
diff --git a/src/ProbabDistrib.cpp b/src/ProbabDistrib.cpp
index 7a5869dcc..c34c75982 100644
--- a/src/ProbabDistrib.cpp
+++ b/src/ProbabDistrib.cpp
@@ -5,7 +5,7 @@
 
 #include "Globals.h"
 #include "ProbabDistrib.h"
-#include "MersenneTwister.h"
+#include "FastRandom.h"
 
 
 
diff --git a/src/Protocol/Protocol17x.cpp b/src/Protocol/Protocol17x.cpp
index 1d108ce9c..1e5fe5586 100644
--- a/src/Protocol/Protocol17x.cpp
+++ b/src/Protocol/Protocol17x.cpp
@@ -42,6 +42,7 @@ Implements the 1.7.x protocol classes:
 #include "../BlockEntities/BeaconEntity.h"
 #include "../BlockEntities/CommandBlockEntity.h"
 #include "../BlockEntities/MobHeadEntity.h"
+#include "../BlockEntities/MobSpawnerEntity.h"
 #include "../BlockEntities/FlowerPotEntity.h"
 #include "Bindings/PluginManager.h"
 
@@ -2662,6 +2663,18 @@ void cProtocol172::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			Writer.AddString("id", "FlowerPot");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			break;
 		}
+		case E_BLOCK_MOB_SPAWNER:
+		{
+			cMobSpawnerEntity & MobSpawnerEntity = (cMobSpawnerEntity &)a_BlockEntity;
+
+			Writer.AddInt("x", MobSpawnerEntity.GetPosX());
+			Writer.AddInt("y", MobSpawnerEntity.GetPosY());
+			Writer.AddInt("z", MobSpawnerEntity.GetPosZ());
+			Writer.AddString("EntityId", cMonster::MobTypeToVanillaName(MobSpawnerEntity.GetEntity()));
+			Writer.AddShort("Delay", MobSpawnerEntity.GetSpawnDelay());
+			Writer.AddString("id", "MobSpawner");
+			break;
+		}
 		default: break;
 	}
 
@@ -3134,4 +3147,3 @@ void cProtocol176::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
 
 
 
-
diff --git a/src/Protocol/Protocol18x.cpp b/src/Protocol/Protocol18x.cpp
index 8170a494f..ce580d73e 100644
--- a/src/Protocol/Protocol18x.cpp
+++ b/src/Protocol/Protocol18x.cpp
@@ -41,6 +41,7 @@ Implements the 1.8.x protocol classes:
 #include "../BlockEntities/BeaconEntity.h"
 #include "../BlockEntities/CommandBlockEntity.h"
 #include "../BlockEntities/MobHeadEntity.h"
+#include "../BlockEntities/MobSpawnerEntity.h"
 #include "../BlockEntities/FlowerPotEntity.h"
 #include "Bindings/PluginManager.h"
 
@@ -2972,6 +2973,18 @@ void cProtocol180::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			Writer.AddString("id", "FlowerPot");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			break;
 		}
+		case E_BLOCK_MOB_SPAWNER:
+		{
+			cMobSpawnerEntity & MobSpawnerEntity = (cMobSpawnerEntity &)a_BlockEntity;
+
+			Writer.AddInt("x", MobSpawnerEntity.GetPosX());
+			Writer.AddInt("y", MobSpawnerEntity.GetPosY());
+			Writer.AddInt("z", MobSpawnerEntity.GetPosZ());
+			Writer.AddString("EntityId", cMonster::MobTypeToVanillaName(MobSpawnerEntity.GetEntity()));
+			Writer.AddShort("Delay", MobSpawnerEntity.GetSpawnDelay());
+			Writer.AddString("id", "MobSpawner");
+			break;
+		}
 		default: break;
 	}
 
diff --git a/src/Root.cpp b/src/Root.cpp
index 24c1a4cc8..865b2a213 100644
--- a/src/Root.cpp
+++ b/src/Root.cpp
@@ -16,7 +16,6 @@
 #include "Protocol/ProtocolRecognizer.h"  // for protocol version constants
 #include "CommandOutput.h"
 #include "DeadlockDetect.h"
-#include "OSSupport/Timer.h"
 #include "LoggerListeners.h"
 #include "BuildInfo.h"
 #include "IniFile.h"
@@ -42,7 +41,6 @@ cRoot* cRoot::s_Root = nullptr;
 
 cRoot::cRoot(void) :
 	m_pDefaultWorld(nullptr),
-	m_InputThread(nullptr),
 	m_Server(nullptr),
 	m_MonsterConfig(nullptr),
 	m_CraftingRecipes(nullptr),
@@ -68,26 +66,24 @@ cRoot::~cRoot()
 
 
 
-void cRoot::InputThread(void * a_Params)
+void cRoot::InputThread(cRoot & a_Params)
 {
-	cRoot & self = *(cRoot*)a_Params;
-
 	cLogCommandOutputCallback Output;
 	
-	while (!self.m_bStop && !self.m_bRestart && !m_TerminateEventRaised && std::cin.good())
+	while (!a_Params.m_bStop && !a_Params.m_bRestart && !m_TerminateEventRaised && std::cin.good())
 	{
 		AString Command;
 		std::getline(std::cin, Command);
 		if (!Command.empty())
 		{
-			self.ExecuteConsoleCommand(TrimString(Command), Output);
+			a_Params.ExecuteConsoleCommand(TrimString(Command), Output);
 		}
 	}
 
 	if (m_TerminateEventRaised || !std::cin.good())
 	{
 		// We have come here because the std::cin has received an EOF / a terminate signal has been sent, and the server is still running; stop the server:
-		self.m_bStop = true;
+		a_Params.m_bStop = true;
 	}
 }
 
@@ -120,9 +116,7 @@ void cRoot::Start(void)
 	m_bStop = false;
 	while (!m_bStop)
 	{
-		cTimer Time;
-		long long mseconds = Time.GetNowTime();
-		
+		auto BeginTime = std::chrono::steady_clock::now();
 		m_bRestart = false;
 
 		LoadGlobalSettings();
@@ -154,7 +148,7 @@ void cRoot::Start(void)
 		m_WebAdmin->Init();
 
 		LOGD("Loading settings...");
-		m_RankManager = new cRankManager();
+		m_RankManager.reset(new cRankManager());
 		m_RankManager->Initialize(m_MojangAPI);
 		m_CraftingRecipes = new cCraftingRecipes;
 		m_FurnaceRecipe   = new cFurnaceRecipe();
@@ -191,21 +185,25 @@ void cRoot::Start(void)
 
 		#if !defined(ANDROID_NDK)
 		LOGD("Starting InputThread...");
-		m_InputThread = new cThread( InputThread, this, "cRoot::InputThread");
-		m_InputThread->Start( false);  // We should NOT wait? Otherwise we can't stop the server from other threads than the input thread
+		try
+		{
+			m_InputThread = std::thread(InputThread, std::ref(*this));
+			m_InputThread.detach();
+		}
+		catch (std::system_error & a_Exception)
+		{
+			LOGERROR("cRoot::Start (std::thread) error %i: could not construct input thread; %s", a_Exception.code().value(), a_Exception.what());
+		}
 		#endif
 
-		long long finishmseconds = Time.GetNowTime();
-		finishmseconds -= mseconds;
-
-		LOG("Startup complete, took %lld ms!", finishmseconds);
+		LOG("Startup complete, took %lld ms!", std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::steady_clock::now() - BeginTime).count());
 		#ifdef _WIN32
 		EnableMenuItem(hmenu, SC_CLOSE, MF_ENABLED);  // Re-enable close button
 		#endif
 
 		while (!m_bStop && !m_bRestart && !m_TerminateEventRaised)  // These are modified by external threads
 		{
-			cSleep::MilliSleep(1000);
+			std::this_thread::sleep_for(std::chrono::seconds(1));
 		}
 
 		if (m_TerminateEventRaised)
@@ -213,10 +211,6 @@ void cRoot::Start(void)
 			m_bStop = true;
 		}
 
-		#if !defined(ANDROID_NDK)
-		delete m_InputThread; m_InputThread = nullptr;
-		#endif
-
 		// Stop the server:
 		m_WebAdmin->Stop();
 		LOG("Shutting down server...");
@@ -633,6 +627,22 @@ bool cRoot::FindAndDoWithPlayer(const AString & a_PlayerName, cPlayerListCallbac
 
 
 
+bool cRoot::DoWithPlayerByUUID(const AString & a_PlayerUUID, cPlayerListCallback & a_Callback)
+{
+	for (WorldMap::iterator itr = m_WorldsByName.begin(); itr !=  m_WorldsByName.end();itr++)
+	{
+		if (itr->second->DoWithPlayerByUUID(a_PlayerUUID, a_Callback))
+		{
+			return true;
+		}
+	}
+	return false;
+}
+
+
+
+
+
 AString cRoot::GetProtocolVersionTextFromInt(int a_ProtocolVersion)
 {
 	return cProtocolRecognizer::GetVersionTextFromInt(a_ProtocolVersion);
diff --git a/src/Root.h b/src/Root.h
index 020a6cff0..e70b284f9 100644
--- a/src/Root.h
+++ b/src/Root.h
@@ -6,6 +6,7 @@
 #include "HTTPServer/HTTPServer.h"
 #include "Defines.h"
 #include "RankManager.h"
+#include <thread>
 
 
 
@@ -86,7 +87,7 @@ public:
 	cPluginManager *   GetPluginManager  (void) { return m_PluginManager; }    // tolua_export
 	cAuthenticator &   GetAuthenticator  (void) { return m_Authenticator; }
 	cMojangAPI &       GetMojangAPI      (void) { return m_MojangAPI; }
-	cRankManager *     GetRankManager    (void) { return m_RankManager; }
+	cRankManager *     GetRankManager    (void) { return m_RankManager.get(); }
 
 	/** Queues a console command for execution through the cServer class.
 	The command will be executed in the tick thread
@@ -126,6 +127,9 @@ public:
 	/// Finds a player from a partial or complete player name and calls the callback - case-insensitive
 	bool FindAndDoWithPlayer(const AString & a_PlayerName, cPlayerListCallback & a_Callback);  // >> EXPORTED IN MANUALBINDINGS <<
 
+	/** Finds the player over his uuid and calls the callback */
+	bool DoWithPlayerByUUID(const AString & a_PlayerUUID, cPlayerListCallback & a_Callback);  // >> EXPORTED IN MANUALBINDINGS <<
+
 	// tolua_begin
 	
 	/// Sends a chat message to all connected clients (in all worlds)
@@ -174,7 +178,7 @@ private:
 	cCriticalSection m_CSPendingCommands;
 	cCommandQueue    m_PendingCommands;
 
-	cThread * m_InputThread;
+	std::thread m_InputThread;
 
 	cServer *        m_Server;
 	cMonsterConfig * m_MonsterConfig;
@@ -185,7 +189,9 @@ private:
 	cPluginManager *   m_PluginManager;
 	cAuthenticator     m_Authenticator;
 	cMojangAPI         m_MojangAPI;
-	cRankManager *     m_RankManager;
+
+	std::unique_ptr<cRankManager> m_RankManager;
+
 	cHTTPServer        m_HTTPServer;
 
 	bool m_bStop;
@@ -207,10 +213,10 @@ private:
 	
 	/// Does the actual work of executing a command
 	void DoExecuteConsoleCommand(const AString & a_Cmd);
-
-	static void InputThread(void* a_Params);
 	
 	static cRoot* s_Root;
+
+	static void InputThread(cRoot & a_Params);
 };  // tolua_export
 
 
diff --git a/src/Server.cpp b/src/Server.cpp
index bbb5ecff3..d6163df7e 100644
--- a/src/Server.cpp
+++ b/src/Server.cpp
@@ -4,7 +4,6 @@
 
 #include "Server.h"
 #include "ClientHandle.h"
-#include "OSSupport/Timer.h"
 #include "Mobs/Monster.h"
 #include "OSSupport/Socket.h"
 #include "Root.h"
@@ -20,8 +19,6 @@
 #include "Protocol/ProtocolRecognizer.h"
 #include "CommandOutput.h"
 
-#include "MersenneTwister.h"
-
 #include "IniFile.h"
 #include "Vector3.h"
 
@@ -75,22 +72,20 @@ cServer::cTickThread::cTickThread(cServer & a_Server) :
 
 void cServer::cTickThread::Execute(void)
 {
-	cTimer Timer;
-
-	long long msPerTick = 50;
-	long long LastTime = Timer.GetNowTime();
+	auto LastTime = std::chrono::steady_clock::now();
+	static const auto msPerTick = std::chrono::milliseconds(50);
 
 	while (!m_ShouldTerminate)
 	{
-		long long NowTime = Timer.GetNowTime();
-		float DeltaTime = (float)(NowTime-LastTime);
-		m_ShouldTerminate = !m_Server.Tick(DeltaTime);
-		long long TickTime = Timer.GetNowTime() - NowTime;
+		auto NowTime = std::chrono::steady_clock::now();
+		auto msec = std::chrono::duration_cast<std::chrono::milliseconds>(NowTime - LastTime).count();
+		m_ShouldTerminate = !m_Server.Tick(static_cast<float>(msec));
+		auto TickTime = std::chrono::steady_clock::now() - NowTime;
 		
 		if (TickTime < msPerTick)
 		{
 			// Stretch tick time until it's at least msPerTick
-			cSleep::MilliSleep((unsigned int)(msPerTick - TickTime));
+			std::this_thread::sleep_for(msPerTick - TickTime);
 		}
 
 		LastTime = NowTime;
diff --git a/src/Simulator/FluidSimulator.cpp b/src/Simulator/FluidSimulator.cpp
index 9c8453d04..ecd74ee52 100644
--- a/src/Simulator/FluidSimulator.cpp
+++ b/src/Simulator/FluidSimulator.cpp
@@ -133,8 +133,10 @@ Direction cFluidSimulator::GetFlowingDirection(int a_X, int a_Y, int a_Z, bool a
 	/*
 	Disabled because of causing problems and being useless atm
 	char BlockBelow = m_World.GetBlock(a_X, a_Y - 1, a_Z);  // If there is nothing or fluid below it -> dominating flow is down :D
-	if (BlockBelow == E_BLOCK_AIR || IsAllowedBlock(BlockBelow))
+	if ((BlockBelow == E_BLOCK_AIR) || IsAllowedBlock(BlockBelow))
+	{
 		return Y_MINUS;
+	}
 	*/
 
 	NIBBLETYPE LowestPoint = m_World.GetBlockMeta(a_X, a_Y, a_Z);  // Current Block Meta so only lower points will be counted
@@ -182,7 +184,9 @@ Direction cFluidSimulator::GetFlowingDirection(int a_X, int a_Y, int a_Z, bool a
 	}
 
 	if (LowestPoint == m_World.GetBlockMeta(a_X, a_Y, a_Z))
+	{
 		return NONE;
+	}
 
 	if (a_X - X > 0)
 	{
diff --git a/src/StringUtils.cpp b/src/StringUtils.cpp
index 34f2da682..5febf5d6c 100644
--- a/src/StringUtils.cpp
+++ b/src/StringUtils.cpp
@@ -416,24 +416,30 @@ static bool isLegalUTF8(const unsigned char * source, int length)
 	{
 		default: return false;
 		// Everything else falls through when "true"...
-		case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
-		case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
+		case 4: if (((a = (*--srcptr)) < 0x80) || (a > 0xbf)) return false;
+		case 3: if (((a = (*--srcptr)) < 0x80) || (a > 0xbf)) return false;
 		case 2:
 		{
-			if ((a = (*--srcptr)) > 0xBF) return false;
+			if ((a = (*--srcptr)) > 0xbf)
+			{
+				return false;
+			}
 			switch (*source)
 			{
 				// no fall-through in this inner switch
-				case 0xE0: if (a < 0xA0) return false; break;
-				case 0xED: if (a > 0x9F) return false; break;
-				case 0xF0: if (a < 0x90) return false; break;
-				case 0xF4: if (a > 0x8F) return false; break;
+				case 0xe0: if (a < 0xa0) return false; break;
+				case 0xed: if (a > 0x9f) return false; break;
+				case 0xf0: if (a < 0x90) return false; break;
+				case 0xf4: if (a > 0x8f) return false; break;
 				default:   if (a < 0x80) return false;
 			}
 		}
-		case 1: if (*source >= 0x80 && *source < 0xC2) return false;
+		case 1: if ((*source >= 0x80) && (*source < 0xc2)) return false;
+	}
+	if (*source > 0xf4)
+	{
+		return false;
 	}
-	if (*source > 0xF4) return false;
 	return true;
 }
 
@@ -446,11 +452,11 @@ AString UTF8ToRawBEUTF16(const char * a_UTF8, size_t a_UTF8Length)
 	AString UTF16;
 	UTF16.reserve(a_UTF8Length * 3);
 
-	const unsigned char * source    = (const unsigned char*)a_UTF8;
+	const unsigned char * source    = (const unsigned char *)a_UTF8;
 	const unsigned char * sourceEnd = source + a_UTF8Length;
 	const int halfShift  = 10;  // used for shifting by 10 bits
 	const unsigned int halfBase = 0x0010000UL;
-	const unsigned int halfMask = 0x3FFUL;
+	const unsigned int halfMask = 0x3ffUL;
 
 	while (source < sourceEnd)
 	{
@@ -481,7 +487,7 @@ AString UTF8ToRawBEUTF16(const char * a_UTF8, size_t a_UTF8Length)
 		if (ch <= UNI_MAX_BMP)
 		{
 			// Target is a character <= 0xFFFF
-			if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END)
+			if ((ch >= UNI_SUR_HIGH_START) && (ch <= UNI_SUR_LOW_END))
 			{
 				// UTF-16 surrogate values are illegal in UTF-32
 				ch = ' ';
@@ -520,7 +526,10 @@ are equivalent to the following loop:
 	{
 		ch += *source++;
 		--tmpBytesToRead;
-		if (tmpBytesToRead) ch <<= 6;
+		if (tmpBytesToRead)
+		{
+			ch <<= 6;
+		}
 	} while (tmpBytesToRead > 0);
 }
 ---------------------------------------------------------------------
@@ -723,15 +732,15 @@ AString ReplaceAllCharOccurrences(const AString & a_String, char a_From, char a_
 /// Converts one Hex character in a Base64 encoding into the data value
 static inline int UnBase64(char c)
 {
-	if (c >='A' && c <= 'Z')
+	if ((c >='A') && (c <= 'Z'))
 	{
 		return c - 'A';
 	}
-	if (c >='a' && c <= 'z')
+	if ((c >='a') && (c <= 'z'))
 	{
 		return c - 'a' + 26;
 	}
-	if (c >= '0' && c <= '9')
+	if ((c >= '0') && (c <= '9'))
 	{
 		return c - '0' + 52;
 	}
diff --git a/src/Tracer.cpp b/src/Tracer.cpp
index e125c6aa4..e604f4a5b 100644
--- a/src/Tracer.cpp
+++ b/src/Tracer.cpp
@@ -14,15 +14,15 @@
 
 
 
-cTracer::cTracer(cWorld * a_World)
-	: m_World(a_World)
+cTracer::cTracer(cWorld * a_World):
+	m_World(a_World)
 {
-	m_NormalTable[0].Set(-1, 0, 0);
-	m_NormalTable[1].Set( 0, 0, -1);
-	m_NormalTable[2].Set( 1, 0, 0);
-	m_NormalTable[3].Set( 0, 0, 1);
-	m_NormalTable[4].Set( 0, 1, 0);
-	m_NormalTable[5].Set( 0, -1, 0);
+	m_NormalTable[0].Set(-1,  0,  0);
+	m_NormalTable[1].Set( 0,  0, -1);
+	m_NormalTable[2].Set( 1,  0,  0);
+	m_NormalTable[3].Set( 0,  0,  1);
+	m_NormalTable[4].Set( 0,  1,  0);
+	m_NormalTable[5].Set( 0, -1,  0);
 }
 
 
@@ -37,10 +37,16 @@ cTracer::~cTracer()
 
 
 
-float cTracer::SigNum( float a_Num)
+float cTracer::SigNum(float a_Num)
 {
-	if (a_Num < 0.f) return -1.f;
-	if (a_Num > 0.f) return 1.f;
+	if (a_Num < 0.f)
+	{
+		return -1.f;
+	}
+	if (a_Num > 0.f)
+	{
+		return 1.f;
+	}
 	return 0.f;
 }
 
@@ -59,7 +65,10 @@ void cTracer::SetValues(const Vector3f & a_Start, const Vector3f & a_Direction)
 	step.z = (int) SigNum(dir.z);
 
 	// normalize the direction vector
-	if (dir.SqrLength() > 0.f) dir.Normalize();
+	if (dir.SqrLength() > 0.f)
+	{
+		dir.Normalize();
+	}
 
 	// how far we must move in the ray direction before
 	// we encounter a new voxel in x-direction
@@ -127,7 +136,7 @@ void cTracer::SetValues(const Vector3f & a_Start, const Vector3f & a_Direction)
 
 
 
-bool cTracer::Trace( const Vector3f & a_Start, const Vector3f & a_Direction, int a_Distance, bool a_LineOfSight)
+bool cTracer::Trace(const Vector3f & a_Start, const Vector3f & a_Direction, int a_Distance, bool a_LineOfSight)
 {
 	if ((a_Start.y < 0) || (a_Start.y >= cChunkDef::Height))
 	{
@@ -249,35 +258,42 @@ int LinesCross(float x0, float y0, float x1, float y1, float x2, float y2, float
 {
 	// float linx, liny;
 
-	float d=(x1-x0)*(y3-y2)-(y1-y0)*(x3-x2);
-	if (std::abs(d)<0.001) {return 0;}
-	float AB=((y0-y2)*(x3-x2)-(x0-x2)*(y3-y2))/d;
-	if (AB>=0.0 && AB<=1.0)
+	float d = (x1 - x0) * (y3 - y2) - (y1 - y0) * (x3 - x2);
+	if (std::abs(d) < 0.001)
 	{
-		float CD=((y0-y2)*(x1-x0)-(x0-x2)*(y1-y0))/d;
-		if (CD>=0.0 && CD<=1.0)
+		return 0;
+	}
+
+	float AB = ((y0 - y2) * (x3 - x2) - (x0 - x2) * (y3 - y2)) / d;
+	if ((AB >= 0.0) && (AB <= 1.0))
+	{
+		float CD = ((y0 - y2) * (x1 - x0) - (x0 - x2) * (y1 - y0)) / d;
+		if ((CD >= 0.0) && (CD <= 1.0))
 		{
-			// linx=x0+AB*(x1-x0);
-			// liny=y0+AB*(y1-y0);
+			// linx = x0 + AB * (x1 - x0);
+			// liny = y0 + AB * (y1 - y0);
 			return 1;
 		}
 	}
 	return 0;
 }
 
+
+
+
 // intersect3D_SegmentPlane(): intersect a segment and a plane
 //    Input:  a_Ray = a segment, and a_Plane = a plane = {Point V0; Vector n;}
 //    Output: *I0 = the intersect point (when it exists)
 //    Return: 0 = disjoint (no intersection)
 //            1 = intersection in the unique point *I0
 //            2 = the segment lies in the plane
-int cTracer::intersect3D_SegmentPlane( const Vector3f & a_Origin, const Vector3f & a_End, const Vector3f & a_PlanePos, const Vector3f & a_PlaneNormal)
+int cTracer::intersect3D_SegmentPlane(const Vector3f & a_Origin, const Vector3f & a_End, const Vector3f & a_PlanePos, const Vector3f & a_PlaneNormal)
 {
 	Vector3f    u = a_End - a_Origin;       // a_Ray.P1 - S.P0;
 	Vector3f    w = a_Origin - a_PlanePos;  // S.P0 - Pn.V0;
 
-	float     D = a_PlaneNormal.Dot( u);      // dot(Pn.n, u);
-	float     N = -(a_PlaneNormal.Dot( w));  // -dot(a_Plane.n, w);
+	float     D = a_PlaneNormal.Dot(u);      // dot(Pn.n, u);
+	float     N = -(a_PlaneNormal.Dot(w));  // -dot(a_Plane.n, w);
 
 	const float EPSILON = 0.0001f;
 	if (fabs(D) < EPSILON)
@@ -294,12 +310,12 @@ int cTracer::intersect3D_SegmentPlane( const Vector3f & a_Origin, const Vector3f
 	// they are not parallel
 	// compute intersect param
 	float sI = N / D;
-	if (sI < 0 || sI > 1)
+	if ((sI < 0) || (sI > 1))
 	{
 		return 0;  // no intersection
 	}
 
-	// Vector3f I ( a_Ray->GetOrigin() + sI * u);// S.P0 + sI * u;  // compute segment intersect point
+	// Vector3f I (a_Ray->GetOrigin() + sI * u);// S.P0 + sI * u;  // compute segment intersect point
 	RealHit = a_Origin + u * sI;
 	return 1;
 }
@@ -311,9 +327,9 @@ int cTracer::intersect3D_SegmentPlane( const Vector3f & a_Origin, const Vector3f
 int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Vector3i & a_BlockPos)
 {
 	Vector3i SmallBlockPos = a_BlockPos;
-	char BlockID = m_World->GetBlock( a_BlockPos.x, a_BlockPos.y, a_BlockPos.z);
+	char BlockID = m_World->GetBlock(a_BlockPos.x, a_BlockPos.y, a_BlockPos.z);
 
-	if (BlockID == E_BLOCK_AIR || IsBlockWater(BlockID))
+	if ((BlockID == E_BLOCK_AIR) || IsBlockWater(BlockID))
 	{
 		return 0;
 	}
@@ -324,86 +340,86 @@ int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Ve
 	Vector3f Look = (end - start);
 	Look.Normalize();
 
-	float dot = Look.Dot( Vector3f(-1, 0, 0));  // first face normal is x -1
+	float dot = Look.Dot(Vector3f(-1, 0, 0));  // first face normal is x -1
 	if (dot < 0)
 	{
-		int Lines = LinesCross( start.x, start.y, end.x, end.y, BlockPos.x, BlockPos.y, BlockPos.x, BlockPos.y + 1);
+		int Lines = LinesCross(start.x, start.y, end.x, end.y, BlockPos.x, BlockPos.y, BlockPos.x, BlockPos.y + 1);
 		if (Lines == 1)
 		{
-			Lines = LinesCross( start.x, start.z, end.x, end.z, BlockPos.x, BlockPos.z, BlockPos.x, BlockPos.z + 1);
+			Lines = LinesCross(start.x, start.z, end.x, end.z, BlockPos.x, BlockPos.z, BlockPos.x, BlockPos.z + 1);
 			if (Lines == 1)
 			{
-				intersect3D_SegmentPlane( start, end, BlockPos, Vector3f(-1, 0, 0));
+				intersect3D_SegmentPlane(start, end, BlockPos, Vector3f(-1, 0, 0));
 				return 1;
 			}
 		}
 	}
-	dot = Look.Dot( Vector3f(0, 0, -1));  // second face normal is z -1
+	dot = Look.Dot(Vector3f(0, 0, -1));  // second face normal is z -1
 	if (dot < 0)
 	{
-		int Lines = LinesCross( start.z, start.y, end.z, end.y, BlockPos.z, BlockPos.y, BlockPos.z, BlockPos.y + 1);
+		int Lines = LinesCross(start.z, start.y, end.z, end.y, BlockPos.z, BlockPos.y, BlockPos.z, BlockPos.y + 1);
 		if (Lines == 1)
 		{
-			Lines = LinesCross( start.z, start.x, end.z, end.x, BlockPos.z, BlockPos.x, BlockPos.z, BlockPos.x + 1);
+			Lines = LinesCross(start.z, start.x, end.z, end.x, BlockPos.z, BlockPos.x, BlockPos.z, BlockPos.x + 1);
 			if (Lines == 1)
 			{
-				intersect3D_SegmentPlane( start, end, BlockPos, Vector3f(0, 0, -1));
+				intersect3D_SegmentPlane(start, end, BlockPos, Vector3f(0, 0, -1));
 				return 2;
 			}
 		}
 	}
-	dot = Look.Dot( Vector3f(1, 0, 0));  // third face normal is x 1
+	dot = Look.Dot(Vector3f(1, 0, 0));  // third face normal is x 1
 	if (dot < 0)
 	{
-		int Lines = LinesCross( start.x, start.y, end.x, end.y, BlockPos.x + 1, BlockPos.y, BlockPos.x + 1, BlockPos.y + 1);
+		int Lines = LinesCross(start.x, start.y, end.x, end.y, BlockPos.x + 1, BlockPos.y, BlockPos.x + 1, BlockPos.y + 1);
 		if (Lines == 1)
 		{
-			Lines = LinesCross( start.x, start.z, end.x, end.z, BlockPos.x + 1, BlockPos.z, BlockPos.x + 1, BlockPos.z + 1);
+			Lines = LinesCross(start.x, start.z, end.x, end.z, BlockPos.x + 1, BlockPos.z, BlockPos.x + 1, BlockPos.z + 1);
 			if (Lines == 1)
 			{
-				intersect3D_SegmentPlane( start, end, BlockPos + Vector3f(1, 0, 0), Vector3f(1, 0, 0));
+				intersect3D_SegmentPlane(start, end, BlockPos + Vector3f(1, 0, 0), Vector3f(1, 0, 0));
 				return 3;
 			}
 		}
 	}
-	dot = Look.Dot( Vector3f(0, 0, 1));  // fourth face normal is z 1
+	dot = Look.Dot(Vector3f(0, 0, 1));  // fourth face normal is z 1
 	if (dot < 0)
 	{
-		int Lines = LinesCross( start.z, start.y, end.z, end.y, BlockPos.z + 1, BlockPos.y, BlockPos.z + 1, BlockPos.y + 1);
+		int Lines = LinesCross(start.z, start.y, end.z, end.y, BlockPos.z + 1, BlockPos.y, BlockPos.z + 1, BlockPos.y + 1);
 		if (Lines == 1)
 		{
-			Lines = LinesCross( start.z, start.x, end.z, end.x, BlockPos.z + 1, BlockPos.x, BlockPos.z + 1, BlockPos.x + 1);
+			Lines = LinesCross(start.z, start.x, end.z, end.x, BlockPos.z + 1, BlockPos.x, BlockPos.z + 1, BlockPos.x + 1);
 			if (Lines == 1)
 			{
-				intersect3D_SegmentPlane( start, end, BlockPos + Vector3f(0, 0, 1), Vector3f(0, 0, 1));
+				intersect3D_SegmentPlane(start, end, BlockPos + Vector3f(0, 0, 1), Vector3f(0, 0, 1));
 				return 4;
 			}
 		}
 	}
-	dot = Look.Dot( Vector3f(0, 1, 0));  // fifth face normal is y 1
+	dot = Look.Dot(Vector3f(0, 1, 0));  // fifth face normal is y 1
 	if (dot < 0)
 	{
-		int Lines = LinesCross( start.y, start.x, end.y, end.x, BlockPos.y + 1, BlockPos.x, BlockPos.y + 1, BlockPos.x + 1);
+		int Lines = LinesCross(start.y, start.x, end.y, end.x, BlockPos.y + 1, BlockPos.x, BlockPos.y + 1, BlockPos.x + 1);
 		if (Lines == 1)
 		{
-			Lines = LinesCross( start.y, start.z, end.y, end.z, BlockPos.y + 1, BlockPos.z, BlockPos.y + 1, BlockPos.z + 1);
+			Lines = LinesCross(start.y, start.z, end.y, end.z, BlockPos.y + 1, BlockPos.z, BlockPos.y + 1, BlockPos.z + 1);
 			if (Lines == 1)
 			{
-				intersect3D_SegmentPlane( start, end, BlockPos + Vector3f(0, 1, 0), Vector3f(0, 1, 0));
+				intersect3D_SegmentPlane(start, end, BlockPos + Vector3f(0, 1, 0), Vector3f(0, 1, 0));
 				return 5;
 			}
 		}
 	}
-	dot = Look.Dot( Vector3f(0, -1, 0));  // sixth face normal is y -1
+	dot = Look.Dot(Vector3f(0, -1, 0));  // sixth face normal is y -1
 	if (dot < 0)
 	{
-		int Lines = LinesCross( start.y, start.x, end.y, end.x, BlockPos.y, BlockPos.x, BlockPos.y, BlockPos.x + 1);
+		int Lines = LinesCross(start.y, start.x, end.y, end.x, BlockPos.y, BlockPos.x, BlockPos.y, BlockPos.x + 1);
 		if (Lines == 1)
 		{
-			Lines = LinesCross( start.y, start.z, end.y, end.z, BlockPos.y, BlockPos.z, BlockPos.y, BlockPos.z + 1);
+			Lines = LinesCross(start.y, start.z, end.y, end.z, BlockPos.y, BlockPos.z, BlockPos.y, BlockPos.z + 1);
 			if (Lines == 1)
 			{
-				intersect3D_SegmentPlane( start, end, BlockPos, Vector3f(0, -1, 0));
+				intersect3D_SegmentPlane(start, end, BlockPos, Vector3f(0, -1, 0));
 				return 6;
 			}
 		}
diff --git a/src/UI/SlotArea.cpp b/src/UI/SlotArea.cpp
index 9113ec343..e784569d9 100644
--- a/src/UI/SlotArea.cpp
+++ b/src/UI/SlotArea.cpp
@@ -1167,7 +1167,7 @@ void cSlotAreaAnvil::UpdateResult(cPlayer & a_Player)
 	{
 		m_MaximumCost = 39;
 	}
-	if (m_MaximumCost >= 40 && !a_Player.IsGameModeCreative())
+	if ((m_MaximumCost >= 40) && !a_Player.IsGameModeCreative())
 	{
 		Input.Empty();
 	}
@@ -2322,7 +2322,7 @@ cItem * cSlotAreaTemporary::GetPlayerSlots(cPlayer & a_Player)
 	{
 		return nullptr;
 	}
-	return &(itr->second[0]);
+	return itr->second.data();
 }
 
 
diff --git a/src/Vector3.h b/src/Vector3.h
index 1854e42e3..1e4a1f5d9 100644
--- a/src/Vector3.h
+++ b/src/Vector3.h
@@ -93,6 +93,21 @@ public:
 		return x * a_Rhs.x + y * a_Rhs.y + z * a_Rhs.z;
 	}
 
+	inline void abs()
+	{
+		x = (x < 0) ? -x : x;
+		y = (y < 0) ? -y : y;
+		z = (z < 0) ? -z : z;
+	}
+
+	// We can't use a capital letter, because we wouldn't be able to call the normal Clamp function.
+	inline void clamp(T a_Min, T a_Max)
+	{
+		x = Clamp(x, a_Min, a_Max);
+		y = Clamp(y, a_Min, a_Max);
+		z = Clamp(z, a_Min, a_Max);
+	}
+	
 	inline Vector3<T> Cross(const Vector3<T> & a_Rhs) const
 	{
 		return Vector3<T>(
diff --git a/src/VoronoiMap.h b/src/VoronoiMap.h
index dfb11e9ce..56022849e 100644
--- a/src/VoronoiMap.h
+++ b/src/VoronoiMap.h
@@ -9,7 +9,7 @@
 
 #pragma once
 
-#include "Noise.h"
+#include "Noise/Noise.h"
 
 
 
diff --git a/src/World.cpp b/src/World.cpp
index 2e079d447..e73dcb915 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -11,7 +11,6 @@
 #include "IniFile.h"
 #include "ChunkMap.h"
 #include "Generating/ChunkDesc.h"
-#include "OSSupport/Timer.h"
 #include "SetChunkData.h"
 
 // Serializers
@@ -45,7 +44,6 @@
 #include "MobCensus.h"
 #include "MobSpawner.h"
 
-#include "MersenneTwister.h"
 #include "Generating/Trees.h"
 #include "Bindings/PluginManager.h"
 #include "Blocks/BlockHandler.h"
@@ -74,102 +72,134 @@ const int TIME_SPAWN_DIVISOR =   148;
 
 
 ////////////////////////////////////////////////////////////////////////////////
-// cWorldLoadProgress:
+// cSpawnPrepare:
 
-/// A simple thread that displays the progress of world loading / saving in cWorld::InitializeSpawn()
-class cWorldLoadProgress :
-	public cIsThread
+/** Generates and lights the spawn area of the world. Runs as a separate thread. */
+class cSpawnPrepare:
+	public cIsThread,
+	public cChunkCoordCallback
 {
+	typedef cIsThread super;
+
 public:
-	cWorldLoadProgress(cWorld * a_World) :
-		cIsThread("cWorldLoadProgress"),
-		m_World(a_World)
-	{
+	cSpawnPrepare(cWorld & a_World, int a_SpawnChunkX, int a_SpawnChunkZ, int a_PrepareDistance):
+		super("SpawnPrepare"),
+		m_World(a_World),
+		m_SpawnChunkX(a_SpawnChunkX),
+		m_SpawnChunkZ(a_SpawnChunkZ),
+		m_PrepareDistance(a_PrepareDistance),
+		m_MaxIdx(a_PrepareDistance * a_PrepareDistance),
+		m_NumPrepared(0),
+		m_LastReportChunkCount(0)
+	{
+		// Start the thread:
 		Start();
+
+		// Wait for start confirmation, so that the thread can be waited-upon after the constructor returns:
+		m_EvtStarted.Wait();
 	}
-	
-	void Stop(void)
-	{
-		m_ShouldTerminate = true;
-		Wait();
-	}
-	
-protected:
 
-	cWorld * m_World;
-	
+
+	// cIsThread override:
 	virtual void Execute(void) override
 	{
-		for (;;)
+		// Confirm thread start:
+		m_EvtStarted.Set();
+
+		// Queue the initial chunks:
+		m_MaxIdx = m_PrepareDistance * m_PrepareDistance;
+		int maxQueue = std::min(m_MaxIdx - 1, 100);  // Number of chunks to queue at once
+		m_NextIdx = maxQueue;
+		m_LastReportTime = std::chrono::steady_clock::now();
+		for (int i = 0; i < maxQueue; i++)
 		{
-			LOG("" SIZE_T_FMT  " chunks to load, %d chunks to generate",
-				m_World->GetStorage().GetLoadQueueLength(),
-				m_World->GetGenerator().GetQueueLength()
-			);
-			
-			// Wait for 2 sec, but be "reasonably wakeable" when the thread is to finish
-			for (int i = 0; i < 20; i++)
-			{
-				cSleep::MilliSleep(100);
-				if (m_ShouldTerminate)
-				{
-					return;
-				}
-			}
-		}  // for (-ever)
+			int chunkX, chunkZ;
+			DecodeChunkCoords(i, chunkX, chunkZ);
+			m_World.GetLightingThread().QueueChunk(chunkX, chunkZ, this);
+		}  // for i
+
+		// Wait for the lighting thread to prepare everything. Event is set in the Call() callback:
+		m_EvtFinished.Wait();
 	}
-	
-} ;
 
+protected:
+	cWorld & m_World;
+	int m_SpawnChunkX;
+	int m_SpawnChunkZ;
+	int m_PrepareDistance;
 
+	/** The index of the next chunk to be queued in the lighting thread. */
+	int m_NextIdx;
 
+	/** The maximum index of the prepared chunks. Queueing stops when m_NextIdx reaches this number. */
+	int m_MaxIdx;
 
+	/** Total number of chunks already finished preparing. Preparation finishes when this number reaches m_MaxIdx. */
+	int m_NumPrepared;
 
-////////////////////////////////////////////////////////////////////////////////
-// cWorldLightingProgress:
+	/** Event used to signal that the thread has started. */
+	cEvent m_EvtStarted;
 
-/// A simple thread that displays the progress of world lighting in cWorld::InitializeSpawn()
-class cWorldLightingProgress :
-	public cIsThread
-{
-public:
-	cWorldLightingProgress(cLightingThread * a_Lighting) :
-		cIsThread("cWorldLightingProgress"),
-		m_Lighting(a_Lighting)
-	{
-		Start();
-	}
-	
-	void Stop(void)
+	/** Event used to signal that the preparation is finished. */
+	cEvent m_EvtFinished;
+
+	/** The timestamp of the last progress report emitted. */
+	std::chrono::steady_clock::time_point m_LastReportTime;
+
+	/** Number of chunks prepared when the last progress report was emitted. */
+	int m_LastReportChunkCount;
+
+	// cChunkCoordCallback override:
+	virtual void Call(int a_ChunkX, int a_ChunkZ)
 	{
-		m_ShouldTerminate = true;
-		Wait();
+		// Check if this was the last chunk:
+		m_NumPrepared += 1;
+		if (m_NumPrepared >= m_MaxIdx)
+		{
+			m_EvtFinished.Set();
+			// Must return here, because "this" may have gotten deleted by the previous line
+			return;
+		}
+
+		// Queue another chunk, if appropriate:
+		if (m_NextIdx < m_MaxIdx)
+		{
+			int chunkX, chunkZ;
+			DecodeChunkCoords(m_NextIdx, chunkX, chunkZ);
+			m_World.GetLightingThread().QueueChunk(chunkX, chunkZ, this);
+			m_NextIdx += 1;
+		}
+
+		// Report progress every 1 second:
+		auto Now = std::chrono::steady_clock::now();
+		if (Now - m_LastReportTime > std::chrono::seconds(1))
+		{
+			float PercentDone = static_cast<float>(m_NumPrepared * 100) / m_MaxIdx;
+			float ChunkSpeed = static_cast<float>((m_NumPrepared - m_LastReportChunkCount) * 1000) / std::chrono::duration_cast<std::chrono::milliseconds>(Now - m_LastReportTime).count();
+			LOG("Preparing spawn (%s): %.02f%% (%d/%d; %.02f chunks/s)",
+				m_World.GetName().c_str(), PercentDone, m_NumPrepared, m_MaxIdx, ChunkSpeed
+			);
+			m_LastReportTime = Now;
+			m_LastReportChunkCount = m_NumPrepared;
+		}
 	}
-	
-protected:
 
-	cLightingThread * m_Lighting;
-	
-	virtual void Execute(void) override
+
+	/** Decodes the index into chunk coords. Provides the specific chunk ordering. */
+	void DecodeChunkCoords(int a_Idx, int & a_ChunkX, int & a_ChunkZ)
 	{
-		for (;;)
+		// A zigzag pattern from the top to bottom, each row alternating between forward-x and backward-x:
+		int z = a_Idx / m_PrepareDistance;
+		int x = a_Idx % m_PrepareDistance;
+		if ((z & 1) == 0)
 		{
-			LOG("" SIZE_T_FMT  " chunks remaining to light", m_Lighting->GetQueueLength()
-			);
-			
-			// Wait for 2 sec, but be "reasonably wakeable" when the thread is to finish
-			for (int i = 0; i < 20; i++)
-			{
-				cSleep::MilliSleep(100);
-				if (m_ShouldTerminate)
-				{
-					return;
-				}
-			}
-		}  // for (-ever)
+			// Reverse every second row:
+			x = m_PrepareDistance - 1 - x;
+		}
+		a_ChunkZ = m_SpawnChunkZ + z - m_PrepareDistance / 2;
+		a_ChunkX = m_SpawnChunkX + x - m_PrepareDistance / 2;
 	}
-	
-} ;
+};
 
 
 
@@ -202,23 +232,22 @@ cWorld::cTickThread::cTickThread(cWorld & a_World) :
 
 void cWorld::cTickThread::Execute(void)
 {
-	cTimer Timer;
-
-	const Int64 msPerTick = 50;
-	Int64 LastTime = Timer.GetNowTime();
+	auto LastTime = std::chrono::steady_clock::now();
+	static const auto msPerTick = std::chrono::milliseconds(50);
+	auto TickTime = std::chrono::steady_clock::duration(50);
 
-	Int64 TickDuration = 50;
 	while (!m_ShouldTerminate)
 	{
-		Int64 NowTime = Timer.GetNowTime();
-		float DeltaTime = (float)(NowTime - LastTime);
-		m_World.Tick(DeltaTime, (int)TickDuration);
-		TickDuration = Timer.GetNowTime() - NowTime;
+		auto NowTime = std::chrono::steady_clock::now();
+		auto msec = std::chrono::duration_cast<std::chrono::milliseconds>(NowTime - LastTime).count();
+		auto LastTickMsec = std::chrono::duration_cast<std::chrono::duration<int>>(TickTime).count();
+		m_World.Tick(static_cast<float>(msec), LastTickMsec);
+		TickTime = std::chrono::steady_clock::now() - NowTime;
 		
-		if (TickDuration < msPerTick)
+		if (TickTime < msPerTick)
 		{
 			// Stretch tick time until it's at least msPerTick
-			cSleep::MilliSleep((unsigned int)(msPerTick - TickDuration));
+			std::this_thread::sleep_for(msPerTick - TickTime);
 		}
 
 		LastTime = NowTime;
@@ -283,6 +312,7 @@ cWorld::cWorld(const AString & a_WorldName, eDimension a_Dimension, const AStrin
 	m_bCommandBlocksEnabled(true),
 	m_bUseChatPrefixes(false),
 	m_TNTShrapnelLevel(slNone),
+	m_MaxViewDistance(12),
 	m_Scoreboard(this),
 	m_MapManager(this),
 	m_GeneratorCallbacks(*this),
@@ -316,6 +346,10 @@ cWorld::~cWorld()
 	Serializer.Save();
 
 	m_MapManager.SaveMapData();
+
+	// Explicitly destroy the chunkmap, so that it's guaranteed to be destroyed before the other internals
+	// This fixes crashes on stopping the server, because chunk destructor deletes entities and those access the world.
+	m_ChunkMap.reset();
 }
 
 
@@ -431,53 +465,9 @@ void cWorld::InitializeSpawn(void)
 	IniFile.ReadFile(m_IniFileName);
 	int ViewDist = IniFile.GetValueSetI("SpawnPosition", "PregenerateDistance", DefaultViewDist);
 	IniFile.WriteFile(m_IniFileName);
-	
-	LOG("Preparing spawn area in world \"%s\", %d x %d chunks, total %d chunks...", m_WorldName.c_str(), ViewDist, ViewDist, ViewDist * ViewDist);
-	for (int x = 0; x < ViewDist; x++)
-	{
-		for (int z = 0; z < ViewDist; z++)
-		{
-			m_ChunkMap->TouchChunk(x + ChunkX-(ViewDist - 1) / 2, z + ChunkZ-(ViewDist - 1) / 2);  // Queue the chunk in the generator / loader
-		}
-	}
-	
-	{
-		// Display progress during this process:
-		cWorldLoadProgress Progress(this);
-		
-		// Wait for the loader to finish loading
-		m_Storage.WaitForLoadQueueEmpty();
-		
-		// Wait for the generator to finish generating
-		m_Generator.WaitForQueueEmpty();
 
-		// Wait for the loader to finish saving
-		m_Storage.WaitForSaveQueueEmpty();
-		
-		Progress.Stop();
-	}
-	
-	// Light all chunks that have been newly generated:
-	LOG("Lighting spawn area in world \"%s\"...", m_WorldName.c_str());
-	
-	for (int x = 0; x < ViewDist; x++)
-	{
-		int ChX = x + ChunkX-(ViewDist - 1) / 2;
-		for (int z = 0; z < ViewDist; z++)
-		{
-			int ChZ = z + ChunkZ-(ViewDist - 1) / 2;
-			if (!m_ChunkMap->IsChunkLighted(ChX, ChZ))
-			{
-				m_Lighting.QueueChunk(ChX, ChZ);  // Queue the chunk in the lighting thread
-			}
-		}  // for z
-	}  // for x
-	
-	{
-		cWorldLightingProgress Progress(&m_Lighting);
-		m_Lighting.WaitForQueueEmpty();
-		Progress.Stop();
-	}
+	cSpawnPrepare prep(*this, ChunkX, ChunkZ, ViewDist);
+	prep.Wait();
 	
 	#ifdef TEST_LINEBLOCKTRACER
 	// DEBUG: Test out the cLineBlockTracer class by tracing a few lines:
@@ -561,6 +551,8 @@ void cWorld::Start(void)
 	m_BroadcastDeathMessages = IniFile.GetValueSetB("Broadcasting", "BroadcastDeathMessages", true);
 	m_BroadcastAchievementMessages = IniFile.GetValueSetB("Broadcasting", "BroadcastAchievementMessages", true);
 
+	SetMaxViewDistance(IniFile.GetValueSetI("SpawnPosition", "MaxViewDistance", 12));
+
 	// Try to find the "SpawnPosition" key and coord values in the world configuration, set the flag if found
 	int KeyNum = IniFile.FindKey("SpawnPosition");
 	m_IsSpawnExplicitlySet =
@@ -618,7 +610,7 @@ void cWorld::Start(void)
 	}
 	
 	// Adjust the enum-backed variables into their respective bounds:
-	m_GameMode         = (eGameMode)     Clamp(GameMode,         (int)gmSurvival, (int)gmAdventure);
+	m_GameMode         = (eGameMode)     Clamp(GameMode,         (int)gmSurvival, (int)gmSpectator);
 	m_TNTShrapnelLevel = (eShrapnelLevel)Clamp(TNTShrapnelLevel, (int)slNone,     (int)slAll);
 	m_Weather          = (eWeather)      Clamp(Weather,          (int)wSunny,     (int)wStorm);
 
@@ -738,28 +730,32 @@ void cWorld::InitialiseGeneratorDefaults(cIniFile & a_IniFile)
 	{
 		case dimEnd:
 		{
-			a_IniFile.GetValueSet("Generator", "BiomeGen", "Constant");
-			a_IniFile.GetValueSet("Generator", "ConstantBiome", "End");
-			a_IniFile.GetValueSet("Generator", "HeightGen", "Biomal");
+			a_IniFile.GetValueSet("Generator", "Generator",      "Composable");
+			a_IniFile.GetValueSet("Generator", "BiomeGen",       "Constant");
+			a_IniFile.GetValueSet("Generator", "ConstantBiome",  "End");
+			a_IniFile.GetValueSet("Generator", "ShapeGen",       "End");
 			a_IniFile.GetValueSet("Generator", "CompositionGen", "End");
 			break;
 		}
 		case dimOverworld:
 		{
-			a_IniFile.GetValueSet("Generator", "BiomeGen", "MultiStepMap");
-			a_IniFile.GetValueSet("Generator", "HeightGen", "DistortedHeightmap");
-			a_IniFile.GetValueSet("Generator", "CompositionGen", "DistortedHeightmap");
-			a_IniFile.GetValueSet("Generator", "Finishers", "Ravines, WormNestCaves, WaterLakes, WaterSprings, LavaLakes, LavaSprings, OreNests, Mineshafts, Trees, SprinkleFoliage, Ice, Snow, Lilypads, BottomLava, DeadBushes, PreSimulator");
+			a_IniFile.GetValueSet("Generator", "Generator",      "Composable");
+			a_IniFile.GetValueSet("Generator", "BiomeGen",       "Grown");
+			a_IniFile.GetValueSet("Generator", "ShapeGen",       "BiomalNoise3D");
+			a_IniFile.GetValueSet("Generator", "CompositionGen", "Biomal");
+			a_IniFile.GetValueSet("Generator", "Finishers",      "Ravines, WormNestCaves, WaterLakes, WaterSprings, LavaLakes, LavaSprings, OreNests, Mineshafts, Trees, Villages, SprinkleFoliage, Ice, Snow, Lilypads, BottomLava, DeadBushes, PreSimulator, Animals");
 			break;
 		}
 		case dimNether:
 		{
-			a_IniFile.GetValueSet("Generator", "BiomeGen", "Constant");
-			a_IniFile.GetValueSet("Generator", "ConstantBiome", "Nether");
-			a_IniFile.GetValueSet("Generator", "HeightGen", "Flat");
-			a_IniFile.GetValueSet("Generator", "FlatHeight", "128");
-			a_IniFile.GetValueSet("Generator", "CompositionGen", "Nether");
-			a_IniFile.GetValueSet("Generator", "Finishers", "WormNestCaves, BottomLava, LavaSprings, NetherClumpFoliage, NetherForts, PreSimulator");
+			a_IniFile.GetValueSet("Generator", "Generator",        "Composable");
+			a_IniFile.GetValueSet("Generator", "BiomeGen",         "Constant");
+			a_IniFile.GetValueSet("Generator", "ConstantBiome",    "Nether");
+			a_IniFile.GetValueSet("Generator", "ShapeGen",         "HeightMap");
+			a_IniFile.GetValueSet("Generator", "HeightGen",        "Flat");
+			a_IniFile.GetValueSet("Generator", "FlatHeight",       "128");
+			a_IniFile.GetValueSet("Generator", "CompositionGen",   "Nether");
+			a_IniFile.GetValueSet("Generator", "Finishers",        "SoulsandRims, WormNestCaves, BottomLava, LavaSprings, NetherClumpFoliage, NetherForts, PreSimulator");
 			a_IniFile.GetValueSet("Generator", "BottomLavaHeight", "30");
 			break;
 		}
@@ -1809,7 +1805,7 @@ void cWorld::SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double
 	a_FlyAwaySpeed /= 100;  // Pre-divide, so that we don't have to divide each time inside the loop
 	for (cItems::const_iterator itr = a_Pickups.begin(); itr != a_Pickups.end(); ++itr)
 	{
-		if (!IsValidItem(itr->m_ItemType) || itr->m_ItemType == E_BLOCK_AIR)
+		if (!IsValidItem(itr->m_ItemType) || (itr->m_ItemType == E_BLOCK_AIR))
 		{
 			// Don't spawn pickup if item isn't even valid; should prevent client crashing too
 			continue;
@@ -1835,7 +1831,7 @@ void cWorld::SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double
 {
 	for (cItems::const_iterator itr = a_Pickups.begin(); itr != a_Pickups.end(); ++itr)
 	{
-		if (!IsValidItem(itr->m_ItemType) || itr->m_ItemType == E_BLOCK_AIR)
+		if (!IsValidItem(itr->m_ItemType) || (itr->m_ItemType == E_BLOCK_AIR))
 		{
 			continue;
 		}
@@ -2680,7 +2676,7 @@ bool cWorld::ForEachPlayer(cPlayerListCallback & a_Callback)
 
 bool cWorld::DoWithPlayer(const AString & a_PlayerName, cPlayerListCallback & a_Callback)
 {
-	// Calls the callback for each player in the list
+	// Calls the callback for the specified player in the list
 	cCSLock Lock(m_CSPlayers);
 	for (cPlayerList::iterator itr = m_Players.begin(); itr != m_Players.end(); ++itr)
 	{
@@ -2729,6 +2725,23 @@ bool cWorld::FindAndDoWithPlayer(const AString & a_PlayerNameHint, cPlayerListCa
 
 
 
+bool cWorld::DoWithPlayerByUUID(const AString & a_PlayerUUID, cPlayerListCallback & a_Callback)
+{
+	cCSLock Lock(m_CSPlayers);
+	for (cPlayerList::iterator itr = m_Players.begin(); itr != m_Players.end(); ++itr)
+	{
+		if ((*itr)->GetUUID() == a_PlayerUUID)
+		{
+			return a_Callback.Item(*itr);
+		}
+	}
+	return false;
+}
+
+
+
+
+
 // TODO: This interface is dangerous!
 cPlayer * cWorld::FindClosestPlayer(const Vector3d & a_Pos, float a_SightLimit, bool a_CheckLineOfSight)
 {
@@ -2909,25 +2922,19 @@ bool cWorld::SetSignLines(int a_BlockX, int a_BlockY, int a_BlockZ, const AStrin
 	AString Line2(a_Line2);
 	AString Line3(a_Line3);
 	AString Line4(a_Line4);
+
 	if (cRoot::Get()->GetPluginManager()->CallHookUpdatingSign(*this, a_BlockX, a_BlockY, a_BlockZ, Line1, Line2, Line3, Line4, a_Player))
 	{
 		return false;
 	}
+
 	if (m_ChunkMap->SetSignLines(a_BlockX, a_BlockY, a_BlockZ, Line1, Line2, Line3, Line4))
 	{
 		cRoot::Get()->GetPluginManager()->CallHookUpdatedSign(*this, a_BlockX, a_BlockY, a_BlockZ, Line1, Line2, Line3, Line4, a_Player);
 		return true;
 	}
-	return false;
-}
-
-
-
 
-
-bool cWorld::UpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4, cPlayer * a_Player)
-{
-	return SetSignLines(a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4, a_Player);
+	return false;
 }
 
 
@@ -3119,6 +3126,11 @@ bool cWorld::HasEntity(int a_UniqueID)
 	}
 
 	// Check if the entity is in the chunkmap:
+	if (m_ChunkMap.get() == nullptr)
+	{
+		// Chunkmap has already been destroyed, there are no entities anymore.
+		return false;
+	}
 	return m_ChunkMap->HasEntity(a_UniqueID);
 }
 
diff --git a/src/World.h b/src/World.h
index ec6dcadde..d64be208e 100644
--- a/src/World.h
+++ b/src/World.h
@@ -10,7 +10,6 @@
 #define MAX_PLAYERS 65535
 
 #include "Simulator/SimulatorManager.h"
-#include "MersenneTwister.h"
 #include "ChunkMap.h"
 #include "WorldStorage/WorldStorage.h"
 #include "Generating/ChunkGenerator.h"
@@ -26,6 +25,8 @@
 #include "MapManager.h"
 #include "Blocks/WorldInterface.h"
 #include "Blocks/BroadcastInterface.h"
+#include "FastRandom.h"
+#include "ClientHandle.h"
 
 
 
@@ -314,7 +315,8 @@ public:
 	/** Calls the callback for each player in the list; returns true if all players processed, false if the callback aborted by returning true */
 	virtual bool ForEachPlayer(cPlayerListCallback & a_Callback) override;  // >> EXPORTED IN MANUALBINDINGS <<
 
-	/** Calls the callback for the player of the given name; returns true if the player was found and the callback called, false if player not found. Callback return ignored */
+	/** Calls the callback for the player of the given name; returns true if the player was found and the callback called, false if player not found.
+	Callback return value is ignored. If there are multiple players of the same name, only (random) one is processed by the callback. */
 	bool DoWithPlayer(const AString & a_PlayerName, cPlayerListCallback & a_Callback);  // >> EXPORTED IN MANUALBINDINGS <<
 
 	/** Finds a player from a partial or complete player name and calls the callback - case-insensitive */
@@ -323,6 +325,9 @@ public:
 	// TODO: This interface is dangerous - rewrite to DoWithClosestPlayer(pos, sight, action)
 	cPlayer * FindClosestPlayer(const Vector3d & a_Pos, float a_SightLimit, bool a_CheckLineOfSight = true);
 	
+	/** Finds the player over his uuid and calls the callback */
+	bool DoWithPlayerByUUID(const AString & a_PlayerUUID, cPlayerListCallback & a_Callback);  // >> EXPORTED IN MANUALBINDINGS <<
+
 	void SendPlayerList(cPlayer * a_DestPlayer);  // Sends playerlist to the player
 
 	/** Adds the entity into its appropriate chunk; takes ownership of the entity ptr.
@@ -374,11 +379,8 @@ public:
 	/** Marks the chunk as failed-to-load: */
 	void ChunkLoadFailed(int a_ChunkX, int a_ChunkZ);
 	
-	/** Sets the sign text, asking plugins for permission first. a_Player is the player who this change belongs to, may be nullptr. Returns true if sign text changed. Same as UpdateSign() */
+	/** Sets the sign text, asking plugins for permission first. a_Player is the player who this change belongs to, may be nullptr. Returns true if sign text changed. */
 	bool SetSignLines(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4, cPlayer * a_Player = nullptr);  // Exported in ManualBindings.cpp
-	
-	/** Sets the sign text, asking plugins for permission first. a_Player is the player who this change belongs to, may be nullptr. Returns true if sign text changed. Same as SetSignLines() */
-	bool UpdateSign(int a_X, int a_Y, int a_Z, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4, cPlayer * a_Player = nullptr);  // Exported in ManualBindings.cpp
 
 	/** Sets the command block command. Returns true if command changed. */
 	bool SetCommandBlockCommand(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Command);  // tolua_export
@@ -646,6 +648,12 @@ public:
 	eShrapnelLevel GetTNTShrapnelLevel(void) const { return m_TNTShrapnelLevel; }
 	void SetTNTShrapnelLevel(eShrapnelLevel a_Flag) { m_TNTShrapnelLevel = a_Flag; }
 
+	int GetMaxViewDistance(void) const { return m_MaxViewDistance; }
+	void SetMaxViewDistance(int a_MaxViewDistance)
+	{
+		m_MaxViewDistance = Clamp(a_MaxViewDistance, cClientHandle::MIN_VIEW_DISTANCE, cClientHandle::MAX_VIEW_DISTANCE);
+	}
+
 	bool ShouldUseChatPrefixes(void) const { return m_bUseChatPrefixes; }
 	void SetShouldUseChatPrefixes(bool a_Flag) { m_bUseChatPrefixes = a_Flag; }
 
@@ -689,6 +697,8 @@ public:
 	inline size_t GetStorageLoadQueueLength(void) { return m_Storage.GetLoadQueueLength(); }    // tolua_export
 	inline size_t GetStorageSaveQueueLength(void) { return m_Storage.GetSaveQueueLength(); }    // tolua_export
 
+	cLightingThread & GetLightingThread(void) { return m_Lighting; }
+
 	void InitializeSpawn(void);
 	
 	/** Starts threads that belong to this world */
@@ -961,6 +971,9 @@ private:
 	*/
 	eShrapnelLevel m_TNTShrapnelLevel;
 
+	/** The maximum view distance that a player can have in this world. */
+	int m_MaxViewDistance;
+
 	/** Name of the nether world */
 	AString m_NetherWorldName;
 
diff --git a/src/WorldStorage/FireworksSerializer.cpp b/src/WorldStorage/FireworksSerializer.cpp
index ecb600483..91a5b8b63 100644
--- a/src/WorldStorage/FireworksSerializer.cpp
+++ b/src/WorldStorage/FireworksSerializer.cpp
@@ -22,11 +22,11 @@ void cFireworkItem::WriteToNBTCompound(const cFireworkItem & a_FireworkItem, cFa
 			a_Writer.AddByte("Type", a_FireworkItem.m_Type);
 			if (!a_FireworkItem.m_Colours.empty())
 			{
-				a_Writer.AddIntArray("Colors", &(a_FireworkItem.m_Colours[0]), a_FireworkItem.m_Colours.size());
+				a_Writer.AddIntArray("Colors", a_FireworkItem.m_Colours.data(), a_FireworkItem.m_Colours.size());
 			}
 			if (!a_FireworkItem.m_FadeColours.empty())
 			{
-				a_Writer.AddIntArray("FadeColors", &(a_FireworkItem.m_FadeColours[0]), a_FireworkItem.m_FadeColours.size());
+				a_Writer.AddIntArray("FadeColors", a_FireworkItem.m_FadeColours.data(), a_FireworkItem.m_FadeColours.size());
 			}
 			a_Writer.EndCompound();
 			a_Writer.EndList();
@@ -41,11 +41,11 @@ void cFireworkItem::WriteToNBTCompound(const cFireworkItem & a_FireworkItem, cFa
 			a_Writer.AddByte("Type", a_FireworkItem.m_Type);
 			if (!a_FireworkItem.m_Colours.empty())
 			{
-				a_Writer.AddIntArray("Colors", &(a_FireworkItem.m_Colours[0]), a_FireworkItem.m_Colours.size());
+				a_Writer.AddIntArray("Colors", a_FireworkItem.m_Colours.data(), a_FireworkItem.m_Colours.size());
 			}
 			if (!a_FireworkItem.m_FadeColours.empty())
 			{
-				a_Writer.AddIntArray("FadeColors", &(a_FireworkItem.m_FadeColours[0]), a_FireworkItem.m_FadeColours.size());
+				a_Writer.AddIntArray("FadeColors", a_FireworkItem.m_FadeColours.data(), a_FireworkItem.m_FadeColours.size());
 			}
 			a_Writer.EndCompound();
 			break;
diff --git a/src/WorldStorage/MapSerializer.cpp b/src/WorldStorage/MapSerializer.cpp
index 4a913c81a..f2d35b318 100644
--- a/src/WorldStorage/MapSerializer.cpp
+++ b/src/WorldStorage/MapSerializer.cpp
@@ -112,7 +112,7 @@ void cMapSerializer::SaveMapToNBT(cFastNBTWriter & a_Writer)
 	a_Writer.AddInt("zCenter", m_Map->GetCenterZ());
 
 	const cMap::cColorList & Data = m_Map->GetData();
-	a_Writer.AddByteArray("colors", (char *) &Data[0], Data.size());
+	a_Writer.AddByteArray("colors", (char *)Data.data(), Data.size());
 
 	a_Writer.EndCompound();
 }
@@ -190,7 +190,7 @@ bool cMapSerializer::LoadMapFromNBT(const cParsedNBT & a_NBT)
 	CurrLine = a_NBT.FindChildByName(Data, "colors");
 	if ((CurrLine >= 0) && (a_NBT.GetType(CurrLine) == TAG_ByteArray))
 	{
-		memcpy(&m_Map->m_Data[0], a_NBT.GetData(CurrLine), NumPixels);
+		memcpy(m_Map->m_Data.data(), a_NBT.GetData(CurrLine), NumPixels);
 	}
 
 	return true;
diff --git a/src/WorldStorage/NBTChunkSerializer.cpp b/src/WorldStorage/NBTChunkSerializer.cpp
index 4daa8cc7b..432e122b5 100644
--- a/src/WorldStorage/NBTChunkSerializer.cpp
+++ b/src/WorldStorage/NBTChunkSerializer.cpp
@@ -18,6 +18,7 @@
 #include "../BlockEntities/FurnaceEntity.h"
 #include "../BlockEntities/HopperEntity.h"
 #include "../BlockEntities/JukeboxEntity.h"
+#include "../BlockEntities/MobSpawnerEntity.h"
 #include "../BlockEntities/NoteEntity.h"
 #include "../BlockEntities/SignEntity.h"
 #include "../BlockEntities/MobHeadEntity.h"
@@ -290,6 +291,20 @@ void cNBTChunkSerializer::AddJukeboxEntity(cJukeboxEntity * a_Jukebox)
 
 
 
+void cNBTChunkSerializer::AddMobSpawnerEntity(cMobSpawnerEntity * a_MobSpawner)
+{
+	m_Writer.BeginCompound("");
+		AddBasicTileEntity(a_MobSpawner, "MobSpawner");
+		m_Writer.AddShort("Entity", static_cast<short>(a_MobSpawner->GetEntity()));
+		m_Writer.AddString("EntityId", cMonster::MobTypeToVanillaName(a_MobSpawner->GetEntity()));
+		m_Writer.AddShort("Delay", a_MobSpawner->GetSpawnDelay());
+	m_Writer.EndCompound();
+}
+
+
+
+
+
 void cNBTChunkSerializer::AddNoteEntity(cNoteEntity * a_Note)
 {
 	m_Writer.BeginCompound("");
@@ -914,6 +929,7 @@ void cNBTChunkSerializer::BlockEntity(cBlockEntity * a_Entity)
 		case E_BLOCK_HOPPER:        AddHopperEntity      ((cHopperEntity *)      a_Entity); break;
 		case E_BLOCK_JUKEBOX:       AddJukeboxEntity     ((cJukeboxEntity *)     a_Entity); break;
 		case E_BLOCK_LIT_FURNACE:   AddFurnaceEntity     ((cFurnaceEntity *)     a_Entity); break;
+		case E_BLOCK_MOB_SPAWNER:   AddMobSpawnerEntity  ((cMobSpawnerEntity *)  a_Entity); break;
 		case E_BLOCK_NOTE_BLOCK:    AddNoteEntity        ((cNoteEntity *)        a_Entity); break;
 		case E_BLOCK_SIGN_POST:     AddSignEntity        ((cSignEntity *)        a_Entity); break;
 		case E_BLOCK_TRAPPED_CHEST: AddChestEntity       ((cChestEntity *)       a_Entity, a_Entity->GetBlockType()); break;
diff --git a/src/WorldStorage/NBTChunkSerializer.h b/src/WorldStorage/NBTChunkSerializer.h
index 5ffab8cc5..4c066b9af 100644
--- a/src/WorldStorage/NBTChunkSerializer.h
+++ b/src/WorldStorage/NBTChunkSerializer.h
@@ -32,6 +32,7 @@ class cJukeboxEntity;
 class cNoteEntity;
 class cSignEntity;
 class cMobHeadEntity;
+class cMobSpawnerEntity;
 class cFlowerPotEntity;
 class cFallingBlock;
 class cMinecart;
@@ -94,19 +95,20 @@ protected:
 	void AddItemGrid(const cItemGrid & a_Grid, int a_BeginSlotNum = 0);
 	
 	// Block entities:
-	void AddBasicTileEntity(cBlockEntity *     a_Entity, const char * a_EntityTypeID);
-	void AddBeaconEntity   (cBeaconEntity *    a_Entity);
-	void AddChestEntity    (cChestEntity *     a_Entity, BLOCKTYPE a_ChestType);
-	void AddDispenserEntity(cDispenserEntity * a_Entity);
-	void AddDropperEntity  (cDropperEntity *   a_Entity);
-	void AddFurnaceEntity  (cFurnaceEntity *   a_Furnace);
-	void AddHopperEntity   (cHopperEntity *    a_Entity);
-	void AddJukeboxEntity  (cJukeboxEntity *   a_Jukebox);
-	void AddNoteEntity     (cNoteEntity *      a_Note);
-	void AddSignEntity     (cSignEntity *      a_Sign);
-	void AddMobHeadEntity  (cMobHeadEntity *     a_MobHead);
+	void AddBasicTileEntity   (cBlockEntity *        a_Entity, const char * a_EntityTypeID);
+	void AddBeaconEntity      (cBeaconEntity *       a_Entity);
+	void AddChestEntity       (cChestEntity *        a_Entity, BLOCKTYPE a_ChestType);
+	void AddDispenserEntity   (cDispenserEntity *    a_Entity);
+	void AddDropperEntity     (cDropperEntity *      a_Entity);
+	void AddFurnaceEntity     (cFurnaceEntity *      a_Furnace);
+	void AddHopperEntity      (cHopperEntity *       a_Entity);
+	void AddJukeboxEntity     (cJukeboxEntity *      a_Jukebox);
+	void AddMobSpawnerEntity  (cMobSpawnerEntity *   a_MobSpawner);
+	void AddNoteEntity        (cNoteEntity *         a_Note);
+	void AddSignEntity        (cSignEntity *         a_Sign);
+	void AddMobHeadEntity     (cMobHeadEntity *      a_MobHead);
 	void AddCommandBlockEntity(cCommandBlockEntity * a_CmdBlock);
-	void AddFlowerPotEntity(cFlowerPotEntity * a_FlowerPot);
+	void AddFlowerPotEntity   (cFlowerPotEntity *    a_FlowerPot);
 	
 	// Entities:
 	void AddBasicEntity       (cEntity * a_Entity, const AString & a_ClassName);
diff --git a/src/WorldStorage/WSSAnvil.cpp b/src/WorldStorage/WSSAnvil.cpp
index 0c77b4d67..5a0932bbe 100644
--- a/src/WorldStorage/WSSAnvil.cpp
+++ b/src/WorldStorage/WSSAnvil.cpp
@@ -28,6 +28,7 @@
 #include "../BlockEntities/NoteEntity.h"
 #include "../BlockEntities/SignEntity.h"
 #include "../BlockEntities/MobHeadEntity.h"
+#include "../BlockEntities/MobSpawnerEntity.h"
 #include "../BlockEntities/FlowerPotEntity.h"
 
 #include "../Mobs/Monster.h"
@@ -630,7 +631,7 @@ void cWSSAnvil::LoadBlockEntitiesFromNBT(cBlockEntityList & a_BlockEntities, con
 		// Load the proper BlockEntity type based on the block type:
 		BLOCKTYPE BlockType = cChunkDef::GetBlock(a_BlockTypes, RelX, RelY, RelZ);
 		NIBBLETYPE BlockMeta = cChunkDef::GetNibble(a_BlockMetas, RelX, RelY, RelZ);
-		std::auto_ptr<cBlockEntity> be(LoadBlockEntityFromNBT(a_NBT, Child, x, y, z, BlockType, BlockMeta));
+		std::unique_ptr<cBlockEntity> be(LoadBlockEntityFromNBT(a_NBT, Child, x, y, z, BlockType, BlockMeta));
 		if (be.get() == nullptr)
 		{
 			continue;
@@ -664,6 +665,7 @@ cBlockEntity * cWSSAnvil::LoadBlockEntityFromNBT(const cParsedNBT & a_NBT, int a
 		case E_BLOCK_HOPPER:        return LoadHopperFromNBT      (a_NBT, a_Tag, a_BlockX, a_BlockY, a_BlockZ);
 		case E_BLOCK_JUKEBOX:       return LoadJukeboxFromNBT     (a_NBT, a_Tag, a_BlockX, a_BlockY, a_BlockZ);
 		case E_BLOCK_LIT_FURNACE:   return LoadFurnaceFromNBT     (a_NBT, a_Tag, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_LIT_FURNACE, a_BlockMeta);
+		case E_BLOCK_MOB_SPAWNER:   return LoadMobSpawnerFromNBT  (a_NBT, a_Tag, a_BlockX, a_BlockY, a_BlockZ);
 		case E_BLOCK_NOTE_BLOCK:    return LoadNoteBlockFromNBT   (a_NBT, a_Tag, a_BlockX, a_BlockY, a_BlockZ);
 		case E_BLOCK_SIGN_POST:     return LoadSignFromNBT        (a_NBT, a_Tag, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_SIGN_POST);
 		case E_BLOCK_TRAPPED_CHEST: return LoadChestFromNBT       (a_NBT, a_Tag, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_TRAPPED_CHEST);
@@ -856,7 +858,7 @@ cBlockEntity * cWSSAnvil::LoadBeaconFromNBT(const cParsedNBT & a_NBT, int a_TagI
 		return nullptr;
 	}
 
-	std::auto_ptr<cBeaconEntity> Beacon(new cBeaconEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cBeaconEntity> Beacon(new cBeaconEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
 
 	int CurrentLine = a_NBT.FindChildByName(a_TagIdx, "Levels");
 	if (CurrentLine >= 0)
@@ -906,7 +908,7 @@ cBlockEntity * cWSSAnvil::LoadChestFromNBT(const cParsedNBT & a_NBT, int a_TagId
 	{
 		return nullptr;  // Make it an empty chest - the chunk loader will provide an empty cChestEntity for this
 	}
-	std::auto_ptr<cChestEntity> Chest(new cChestEntity(a_BlockX, a_BlockY, a_BlockZ, m_World, a_ChestBlockType));
+	std::unique_ptr<cChestEntity> Chest(new cChestEntity(a_BlockX, a_BlockY, a_BlockZ, m_World, a_ChestBlockType));
 	LoadItemGridFromNBT(Chest->GetContents(), a_NBT, Items);
 	return Chest.release();
 }
@@ -923,7 +925,7 @@ cBlockEntity * cWSSAnvil::LoadCommandBlockFromNBT(const cParsedNBT & a_NBT, int
 		return nullptr;
 	}
 
-	std::auto_ptr<cCommandBlockEntity> CmdBlock(new cCommandBlockEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cCommandBlockEntity> CmdBlock(new cCommandBlockEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
 
 	int currentLine = a_NBT.FindChildByName(a_TagIdx, "Command");
 	if (currentLine >= 0)
@@ -965,7 +967,7 @@ cBlockEntity * cWSSAnvil::LoadDispenserFromNBT(const cParsedNBT & a_NBT, int a_T
 	{
 		return nullptr;  // Make it an empty dispenser - the chunk loader will provide an empty cDispenserEntity for this
 	}
-	std::auto_ptr<cDispenserEntity> Dispenser(new cDispenserEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cDispenserEntity> Dispenser(new cDispenserEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
 	LoadItemGridFromNBT(Dispenser->GetContents(), a_NBT, Items);
 	return Dispenser.release();
 }
@@ -987,7 +989,7 @@ cBlockEntity * cWSSAnvil::LoadDropperFromNBT(const cParsedNBT & a_NBT, int a_Tag
 	{
 		return nullptr;  // Make it an empty dropper - the chunk loader will provide an empty cDropperEntity for this
 	}
-	std::auto_ptr<cDropperEntity> Dropper(new cDropperEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cDropperEntity> Dropper(new cDropperEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
 	LoadItemGridFromNBT(Dropper->GetContents(), a_NBT, Items);
 	return Dropper.release();
 }
@@ -1004,7 +1006,7 @@ cBlockEntity * cWSSAnvil::LoadFlowerPotFromNBT(const cParsedNBT & a_NBT, int a_T
 		return nullptr;
 	}
 
-	std::auto_ptr<cFlowerPotEntity> FlowerPot(new cFlowerPotEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cFlowerPotEntity> FlowerPot(new cFlowerPotEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
 	short ItemType = 0, ItemData = 0;
 
 	int currentLine = a_NBT.FindChildByName(a_TagIdx, "Item");
@@ -1041,7 +1043,7 @@ cBlockEntity * cWSSAnvil::LoadFurnaceFromNBT(const cParsedNBT & a_NBT, int a_Tag
 		return nullptr;  // Make it an empty furnace - the chunk loader will provide an empty cFurnaceEntity for this
 	}
 	
-	std::auto_ptr<cFurnaceEntity> Furnace(new cFurnaceEntity(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, m_World));
+	std::unique_ptr<cFurnaceEntity> Furnace(new cFurnaceEntity(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, m_World));
 	
 	// Load slots:
 	for (int Child = a_NBT.GetFirstChild(Items); Child != -1; Child = a_NBT.GetNextSibling(Child))
@@ -1085,6 +1087,54 @@ cBlockEntity * cWSSAnvil::LoadFurnaceFromNBT(const cParsedNBT & a_NBT, int a_Tag
 
 
 
+cBlockEntity * cWSSAnvil::LoadMobSpawnerFromNBT(const cParsedNBT & a_NBT, int a_TagIdx, int a_BlockX, int a_BlockY, int a_BlockZ)
+{
+	// Check if the data has a proper type:
+	if (!CheckBlockEntityType(a_NBT, a_TagIdx, "MobSpawner"))
+	{
+		return nullptr;
+	}
+
+	std::unique_ptr<cMobSpawnerEntity> MobSpawner(new cMobSpawnerEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+
+	// Load entity (MCServer worlds):
+	int Type = a_NBT.FindChildByName(a_TagIdx, "Entity");
+	if ((Type >= 0) && (a_NBT.GetType(Type) == TAG_Short))
+	{
+		short MonsterType = a_NBT.GetShort(Type);
+		if ((MonsterType >= 50) && (MonsterType <= 120))
+		{
+			MobSpawner->SetEntity(static_cast<eMonsterType>(MonsterType));
+		}
+	}
+	else
+	{
+		// Load entity (vanilla worlds):
+		Type = a_NBT.FindChildByName(a_TagIdx, "EntityId");
+		if ((Type >= 0) && (a_NBT.GetType(Type) == TAG_String))
+		{
+			eMonsterType MonsterType = cMonster::StringToMobType(a_NBT.GetString(Type));
+			if (MonsterType != eMonsterType::mtInvalidType)
+			{
+				MobSpawner->SetEntity(MonsterType);
+			}
+		}
+	}
+
+	// Load delay:
+	int Delay = a_NBT.FindChildByName(a_TagIdx, "Delay");
+	if ((Delay >= 0) && (a_NBT.GetType(Delay) == TAG_Short))
+	{
+		MobSpawner->SetSpawnDelay(a_NBT.GetShort(Delay));
+	}
+
+	return MobSpawner.release();
+}
+
+
+
+
+
 cBlockEntity * cWSSAnvil::LoadHopperFromNBT(const cParsedNBT & a_NBT, int a_TagIdx, int a_BlockX, int a_BlockY, int a_BlockZ)
 {
 	// Check if the data has a proper type:
@@ -1098,7 +1148,7 @@ cBlockEntity * cWSSAnvil::LoadHopperFromNBT(const cParsedNBT & a_NBT, int a_TagI
 	{
 		return nullptr;  // Make it an empty hopper - the chunk loader will provide an empty cHopperEntity for this
 	}
-	std::auto_ptr<cHopperEntity> Hopper(new cHopperEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cHopperEntity> Hopper(new cHopperEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
 	LoadItemGridFromNBT(Hopper->GetContents(), a_NBT, Items);
 	return Hopper.release();
 }
@@ -1115,7 +1165,7 @@ cBlockEntity * cWSSAnvil::LoadJukeboxFromNBT(const cParsedNBT & a_NBT, int a_Tag
 		return nullptr;
 	}
 
-	std::auto_ptr<cJukeboxEntity> Jukebox(new cJukeboxEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cJukeboxEntity> Jukebox(new cJukeboxEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
 	int Record = a_NBT.FindChildByName(a_TagIdx, "Record");
 	if (Record >= 0)
 	{
@@ -1136,7 +1186,7 @@ cBlockEntity * cWSSAnvil::LoadMobHeadFromNBT(const cParsedNBT & a_NBT, int a_Tag
 		return nullptr;
 	}
 
-	std::auto_ptr<cMobHeadEntity> MobHead(new cMobHeadEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cMobHeadEntity> MobHead(new cMobHeadEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
 
 	int currentLine = a_NBT.FindChildByName(a_TagIdx, "SkullType");
 	if (currentLine >= 0)
@@ -1171,7 +1221,7 @@ cBlockEntity * cWSSAnvil::LoadNoteBlockFromNBT(const cParsedNBT & a_NBT, int a_T
 		return nullptr;
 	}
 
-	std::auto_ptr<cNoteEntity> NoteBlock(new cNoteEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cNoteEntity> NoteBlock(new cNoteEntity(a_BlockX, a_BlockY, a_BlockZ, m_World));
 	int note = a_NBT.FindChildByName(a_TagIdx, "note");
 	if (note >= 0)
 	{
@@ -1192,7 +1242,7 @@ cBlockEntity * cWSSAnvil::LoadSignFromNBT(const cParsedNBT & a_NBT, int a_TagIdx
 		return nullptr;
 	}
 
-	std::auto_ptr<cSignEntity> Sign(new cSignEntity(a_BlockType, a_BlockX, a_BlockY, a_BlockZ, m_World));
+	std::unique_ptr<cSignEntity> Sign(new cSignEntity(a_BlockType, a_BlockX, a_BlockY, a_BlockZ, m_World));
 
 	int currentLine = a_NBT.FindChildByName(a_TagIdx, "Text1");
 	if (currentLine >= 0)
@@ -1445,7 +1495,7 @@ void cWSSAnvil::LoadEntityFromNBT(cEntityList & a_Entities, const cParsedNBT & a
 
 void cWSSAnvil::LoadBoatFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cBoat> Boat(new cBoat(0, 0, 0));
+	std::unique_ptr<cBoat> Boat(new cBoat(0, 0, 0));
 	if (!LoadEntityBaseFromNBT(*Boat.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1459,7 +1509,7 @@ void cWSSAnvil::LoadBoatFromNBT(cEntityList & a_Entities, const cParsedNBT & a_N
 
 void cWSSAnvil::LoadEnderCrystalFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cEnderCrystal> EnderCrystal(new cEnderCrystal(0, 0, 0));
+	std::unique_ptr<cEnderCrystal> EnderCrystal(new cEnderCrystal(0, 0, 0));
 	if (!LoadEntityBaseFromNBT(*EnderCrystal.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1476,12 +1526,15 @@ void cWSSAnvil::LoadFallingBlockFromNBT(cEntityList & a_Entities, const cParsedN
 	int TypeIdx = a_NBT.FindChildByName(a_TagIdx, "TileID");
 	int MetaIdx = a_NBT.FindChildByName(a_TagIdx, "Data");
 
-	if ((TypeIdx < 0) || (MetaIdx < 0)) { return; }
+	if ((TypeIdx < 0) || (MetaIdx < 0))
+	{
+		return;
+	}
 
 	int Type = a_NBT.GetInt(TypeIdx);
 	NIBBLETYPE Meta = (NIBBLETYPE)a_NBT.GetByte(MetaIdx);
 
-	std::auto_ptr<cFallingBlock> FallingBlock(new cFallingBlock(Vector3i(0, 0, 0), Type, Meta));
+	std::unique_ptr<cFallingBlock> FallingBlock(new cFallingBlock(Vector3i(0, 0, 0), Type, Meta));
 	if (!LoadEntityBaseFromNBT(*FallingBlock.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1495,7 +1548,7 @@ void cWSSAnvil::LoadFallingBlockFromNBT(cEntityList & a_Entities, const cParsedN
 
 void cWSSAnvil::LoadMinecartRFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cRideableMinecart> Minecart(new cRideableMinecart(0, 0, 0, cItem(), 1));  // TODO: Load the block and the height
+	std::unique_ptr<cRideableMinecart> Minecart(new cRideableMinecart(0, 0, 0, cItem(), 1));  // TODO: Load the block and the height
 	if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1514,7 +1567,7 @@ void cWSSAnvil::LoadMinecartCFromNBT(cEntityList & a_Entities, const cParsedNBT
 	{
 		return;  // Make it an empty chest - the chunk loader will provide an empty cChestEntity for this
 	}
-	std::auto_ptr<cMinecartWithChest> Minecart(new cMinecartWithChest(0, 0, 0));
+	std::unique_ptr<cMinecartWithChest> Minecart(new cMinecartWithChest(0, 0, 0));
 	if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1541,7 +1594,7 @@ void cWSSAnvil::LoadMinecartCFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 void cWSSAnvil::LoadMinecartFFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cMinecartWithFurnace> Minecart(new cMinecartWithFurnace(0, 0, 0));
+	std::unique_ptr<cMinecartWithFurnace> Minecart(new cMinecartWithFurnace(0, 0, 0));
 	if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1558,7 +1611,7 @@ void cWSSAnvil::LoadMinecartFFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 void cWSSAnvil::LoadMinecartTFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cMinecartWithTNT> Minecart(new cMinecartWithTNT(0, 0, 0));
+	std::unique_ptr<cMinecartWithTNT> Minecart(new cMinecartWithTNT(0, 0, 0));
 	if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1575,7 +1628,7 @@ void cWSSAnvil::LoadMinecartTFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 void cWSSAnvil::LoadMinecartHFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cMinecartWithHopper> Minecart(new cMinecartWithHopper(0, 0, 0));
+	std::unique_ptr<cMinecartWithHopper> Minecart(new cMinecartWithHopper(0, 0, 0));
 	if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1604,7 +1657,7 @@ void cWSSAnvil::LoadPickupFromNBT(cEntityList & a_Entities, const cParsedNBT & a
 		return;
 	}
 	
-	std::auto_ptr<cPickup> Pickup(new cPickup(0, 0, 0, Item, false));  // Pickup delay doesn't matter, just say false
+	std::unique_ptr<cPickup> Pickup(new cPickup(0, 0, 0, Item, false));  // Pickup delay doesn't matter, just say false
 	if (!LoadEntityBaseFromNBT(*Pickup.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1626,7 +1679,7 @@ void cWSSAnvil::LoadPickupFromNBT(cEntityList & a_Entities, const cParsedNBT & a
 
 void cWSSAnvil::LoadTNTFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cTNTEntity> TNT(new cTNTEntity(0.0, 0.0, 0.0, 0));
+	std::unique_ptr<cTNTEntity> TNT(new cTNTEntity(0.0, 0.0, 0.0, 0));
 	if (!LoadEntityBaseFromNBT(*TNT.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1648,7 +1701,7 @@ void cWSSAnvil::LoadTNTFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NB
 
 void cWSSAnvil::LoadExpOrbFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cExpOrb> ExpOrb(new cExpOrb(0.0, 0.0, 0.0, 0));
+	std::unique_ptr<cExpOrb> ExpOrb(new cExpOrb(0.0, 0.0, 0.0, 0));
 	if (!LoadEntityBaseFromNBT(*ExpOrb.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1747,7 +1800,7 @@ void cWSSAnvil::LoadItemFrameFromNBT(cEntityList & a_Entities, const cParsedNBT
 		return;
 	}
 	
-	std::auto_ptr<cItemFrame> ItemFrame(new cItemFrame(BLOCK_FACE_NONE, 0.0, 0.0, 0.0));
+	std::unique_ptr<cItemFrame> ItemFrame(new cItemFrame(BLOCK_FACE_NONE, 0.0, 0.0, 0.0));
 	if (!LoadEntityBaseFromNBT(*ItemFrame.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1772,7 +1825,7 @@ void cWSSAnvil::LoadItemFrameFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 void cWSSAnvil::LoadArrowFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cArrowEntity> Arrow(new cArrowEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
+	std::unique_ptr<cArrowEntity> Arrow(new cArrowEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
 	if (!LoadProjectileBaseFromNBT(*Arrow.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1807,9 +1860,10 @@ void cWSSAnvil::LoadArrowFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 	int InBlockZIdx = a_NBT.FindChildByName(a_TagIdx, "zTile");
 	if ((InBlockXIdx > 0) && (InBlockYIdx > 0) && (InBlockZIdx > 0))
 	{
-		if (a_NBT.GetType(InBlockXIdx) == a_NBT.GetType(InBlockYIdx) == a_NBT.GetType(InBlockZIdx))
+		eTagType typeX = a_NBT.GetType(InBlockXIdx);
+		if ((typeX == a_NBT.GetType(InBlockYIdx)) &&  (typeX == a_NBT.GetType(InBlockZIdx)))
 		{
-			switch (a_NBT.GetType(InBlockXIdx))
+			switch (typeX)
 			{
 				case TAG_Int:
 				{
@@ -1823,6 +1877,11 @@ void cWSSAnvil::LoadArrowFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 					Arrow->SetBlockHit(Vector3i((int)a_NBT.GetShort(InBlockXIdx), (int)a_NBT.GetShort(InBlockYIdx), (int)a_NBT.GetShort(InBlockZIdx)));
 					break;
 				}
+				default:
+				{
+					// No hit block, the arrow is still flying?
+					break;
+				}
 			}
 		}
 	}
@@ -1836,7 +1895,7 @@ void cWSSAnvil::LoadArrowFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 
 void cWSSAnvil::LoadSplashPotionFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cSplashPotionEntity> SplashPotion(new cSplashPotionEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0), cItem()));
+	std::unique_ptr<cSplashPotionEntity> SplashPotion(new cSplashPotionEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0), cItem()));
 	if (!LoadProjectileBaseFromNBT(*SplashPotion.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1860,7 +1919,7 @@ void cWSSAnvil::LoadSplashPotionFromNBT(cEntityList & a_Entities, const cParsedN
 
 void cWSSAnvil::LoadSnowballFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cThrownSnowballEntity> Snowball(new cThrownSnowballEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
+	std::unique_ptr<cThrownSnowballEntity> Snowball(new cThrownSnowballEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
 	if (!LoadProjectileBaseFromNBT(*Snowball.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1876,7 +1935,7 @@ void cWSSAnvil::LoadSnowballFromNBT(cEntityList & a_Entities, const cParsedNBT &
 
 void cWSSAnvil::LoadEggFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cThrownEggEntity> Egg(new cThrownEggEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
+	std::unique_ptr<cThrownEggEntity> Egg(new cThrownEggEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
 	if (!LoadProjectileBaseFromNBT(*Egg.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1892,7 +1951,7 @@ void cWSSAnvil::LoadEggFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NB
 
 void cWSSAnvil::LoadFireballFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cGhastFireballEntity> Fireball(new cGhastFireballEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
+	std::unique_ptr<cGhastFireballEntity> Fireball(new cGhastFireballEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
 	if (!LoadProjectileBaseFromNBT(*Fireball.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1908,7 +1967,7 @@ void cWSSAnvil::LoadFireballFromNBT(cEntityList & a_Entities, const cParsedNBT &
 
 void cWSSAnvil::LoadFireChargeFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cFireChargeEntity> FireCharge(new cFireChargeEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
+	std::unique_ptr<cFireChargeEntity> FireCharge(new cFireChargeEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
 	if (!LoadProjectileBaseFromNBT(*FireCharge.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1924,7 +1983,7 @@ void cWSSAnvil::LoadFireChargeFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 void cWSSAnvil::LoadThrownEnderpearlFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cThrownEnderPearlEntity> Enderpearl(new cThrownEnderPearlEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
+	std::unique_ptr<cThrownEnderPearlEntity> Enderpearl(new cThrownEnderPearlEntity(nullptr, 0, 0, 0, Vector3d(0, 0, 0)));
 	if (!LoadProjectileBaseFromNBT(*Enderpearl.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1940,7 +1999,7 @@ void cWSSAnvil::LoadThrownEnderpearlFromNBT(cEntityList & a_Entities, const cPar
 
 void cWSSAnvil::LoadBatFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cBat> Monster(new cBat());
+	std::unique_ptr<cBat> Monster(new cBat());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1960,7 +2019,7 @@ void cWSSAnvil::LoadBatFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NB
 
 void cWSSAnvil::LoadBlazeFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cBlaze> Monster(new cBlaze());
+	std::unique_ptr<cBlaze> Monster(new cBlaze());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -1980,7 +2039,7 @@ void cWSSAnvil::LoadBlazeFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 
 void cWSSAnvil::LoadCaveSpiderFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cCaveSpider> Monster(new cCaveSpider());
+	std::unique_ptr<cCaveSpider> Monster(new cCaveSpider());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2000,7 +2059,7 @@ void cWSSAnvil::LoadCaveSpiderFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 void cWSSAnvil::LoadChickenFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cChicken> Monster(new cChicken());
+	std::unique_ptr<cChicken> Monster(new cChicken());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2020,7 +2079,7 @@ void cWSSAnvil::LoadChickenFromNBT(cEntityList & a_Entities, const cParsedNBT &
 
 void cWSSAnvil::LoadCowFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cCow> Monster(new cCow());
+	std::unique_ptr<cCow> Monster(new cCow());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2040,7 +2099,7 @@ void cWSSAnvil::LoadCowFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NB
 
 void cWSSAnvil::LoadCreeperFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cCreeper> Monster(new cCreeper());
+	std::unique_ptr<cCreeper> Monster(new cCreeper());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2060,7 +2119,7 @@ void cWSSAnvil::LoadCreeperFromNBT(cEntityList & a_Entities, const cParsedNBT &
 
 void cWSSAnvil::LoadEnderDragonFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cEnderDragon> Monster(new cEnderDragon());
+	std::unique_ptr<cEnderDragon> Monster(new cEnderDragon());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2080,7 +2139,7 @@ void cWSSAnvil::LoadEnderDragonFromNBT(cEntityList & a_Entities, const cParsedNB
 
 void cWSSAnvil::LoadEndermanFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cEnderman> Monster(new cEnderman());
+	std::unique_ptr<cEnderman> Monster(new cEnderman());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2100,7 +2159,7 @@ void cWSSAnvil::LoadEndermanFromNBT(cEntityList & a_Entities, const cParsedNBT &
 
 void cWSSAnvil::LoadGhastFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cGhast> Monster(new cGhast());
+	std::unique_ptr<cGhast> Monster(new cGhast());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2120,7 +2179,7 @@ void cWSSAnvil::LoadGhastFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 
 void cWSSAnvil::LoadGiantFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cGiant> Monster(new cGiant());
+	std::unique_ptr<cGiant> Monster(new cGiant());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2140,17 +2199,19 @@ void cWSSAnvil::LoadGiantFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 
 void cWSSAnvil::LoadHorseFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	int TypeIdx = a_NBT.FindChildByName(a_TagIdx, "Type");
+	int TypeIdx  = a_NBT.FindChildByName(a_TagIdx, "Type");
 	int ColorIdx = a_NBT.FindChildByName(a_TagIdx, "Color");
 	int StyleIdx = a_NBT.FindChildByName(a_TagIdx, "Style");
-
-	if ((TypeIdx < 0) || (ColorIdx < 0) || (StyleIdx < 0)) { return; }
+	if ((TypeIdx < 0) || (ColorIdx < 0) || (StyleIdx < 0))
+	{
+		return;
+	}
 
 	int Type = a_NBT.GetInt(TypeIdx);
 	int Color = a_NBT.GetInt(ColorIdx);
 	int Style = a_NBT.GetInt(StyleIdx);
 
-	std::auto_ptr<cHorse> Monster(new cHorse(Type, Color, Style, 1));
+	std::unique_ptr<cHorse> Monster(new cHorse(Type, Color, Style, 1));
 
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
@@ -2171,7 +2232,7 @@ void cWSSAnvil::LoadHorseFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 
 void cWSSAnvil::LoadIronGolemFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cIronGolem> Monster(new cIronGolem());
+	std::unique_ptr<cIronGolem> Monster(new cIronGolem());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2200,7 +2261,7 @@ void cWSSAnvil::LoadMagmaCubeFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 	int Size = a_NBT.GetInt(SizeIdx);
 
-	std::auto_ptr<cMagmaCube> Monster(new cMagmaCube(Size));
+	std::unique_ptr<cMagmaCube> Monster(new cMagmaCube(Size));
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2220,7 +2281,7 @@ void cWSSAnvil::LoadMagmaCubeFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 void cWSSAnvil::LoadMooshroomFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cMooshroom> Monster(new cMooshroom());
+	std::unique_ptr<cMooshroom> Monster(new cMooshroom());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2240,7 +2301,7 @@ void cWSSAnvil::LoadMooshroomFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 void cWSSAnvil::LoadOcelotFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cOcelot> Monster(new cOcelot());
+	std::unique_ptr<cOcelot> Monster(new cOcelot());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2260,7 +2321,7 @@ void cWSSAnvil::LoadOcelotFromNBT(cEntityList & a_Entities, const cParsedNBT & a
 
 void cWSSAnvil::LoadPigFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cPig> Monster(new cPig());
+	std::unique_ptr<cPig> Monster(new cPig());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2287,7 +2348,7 @@ void cWSSAnvil::LoadSheepFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 		Color = (int)a_NBT.GetByte(ColorIdx);
 	}
 
-	std::auto_ptr<cSheep> Monster(new cSheep(Color));
+	std::unique_ptr<cSheep> Monster(new cSheep(Color));
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2313,7 +2374,7 @@ void cWSSAnvil::LoadSheepFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 
 void cWSSAnvil::LoadSilverfishFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cSilverfish> Monster(new cSilverfish());
+	std::unique_ptr<cSilverfish> Monster(new cSilverfish());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2334,12 +2395,14 @@ void cWSSAnvil::LoadSilverfishFromNBT(cEntityList & a_Entities, const cParsedNBT
 void cWSSAnvil::LoadSkeletonFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
 	int TypeIdx = a_NBT.FindChildByName(a_TagIdx, "SkeletonType");
-
-	if (TypeIdx < 0) { return; }
+	if (TypeIdx < 0)
+	{
+		return;
+	}
 
 	bool Type = ((a_NBT.GetByte(TypeIdx) == 1) ? true : false);
 
-	std::auto_ptr<cSkeleton> Monster(new cSkeleton(Type));
+	std::unique_ptr<cSkeleton> Monster(new cSkeleton(Type));
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2368,7 +2431,7 @@ void cWSSAnvil::LoadSlimeFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 
 	int Size = a_NBT.GetInt(SizeIdx);
 
-	std::auto_ptr<cSlime> Monster(new cSlime(Size));
+	std::unique_ptr<cSlime> Monster(new cSlime(Size));
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2388,7 +2451,7 @@ void cWSSAnvil::LoadSlimeFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 
 void cWSSAnvil::LoadSnowGolemFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cSnowGolem> Monster(new cSnowGolem());
+	std::unique_ptr<cSnowGolem> Monster(new cSnowGolem());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2408,7 +2471,7 @@ void cWSSAnvil::LoadSnowGolemFromNBT(cEntityList & a_Entities, const cParsedNBT
 
 void cWSSAnvil::LoadSpiderFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cSpider> Monster(new cSpider());
+	std::unique_ptr<cSpider> Monster(new cSpider());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2428,7 +2491,7 @@ void cWSSAnvil::LoadSpiderFromNBT(cEntityList & a_Entities, const cParsedNBT & a
 
 void cWSSAnvil::LoadSquidFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cSquid> Monster(new cSquid());
+	std::unique_ptr<cSquid> Monster(new cSquid());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2449,12 +2512,14 @@ void cWSSAnvil::LoadSquidFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 void cWSSAnvil::LoadVillagerFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
 	int TypeIdx = a_NBT.FindChildByName(a_TagIdx, "Profession");
-
-	if (TypeIdx < 0) { return; }
+	if (TypeIdx < 0)
+	{
+		return;
+	}
 
 	int Type = a_NBT.GetInt(TypeIdx);
 
-	std::auto_ptr<cVillager> Monster(new cVillager(cVillager::eVillagerType(Type)));
+	std::unique_ptr<cVillager> Monster(new cVillager(cVillager::eVillagerType(Type)));
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2474,7 +2539,7 @@ void cWSSAnvil::LoadVillagerFromNBT(cEntityList & a_Entities, const cParsedNBT &
 
 void cWSSAnvil::LoadWitchFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cWitch> Monster(new cWitch());
+	std::unique_ptr<cWitch> Monster(new cWitch());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2494,7 +2559,7 @@ void cWSSAnvil::LoadWitchFromNBT(cEntityList & a_Entities, const cParsedNBT & a_
 
 void cWSSAnvil::LoadWitherFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cWither> Monster(new cWither());
+	std::unique_ptr<cWither> Monster(new cWither());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2520,7 +2585,7 @@ void cWSSAnvil::LoadWitherFromNBT(cEntityList & a_Entities, const cParsedNBT & a
 
 void cWSSAnvil::LoadWolfFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cWolf> Monster(new cWolf());
+	std::unique_ptr<cWolf> Monster(new cWolf());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2574,12 +2639,14 @@ void cWSSAnvil::LoadWolfFromNBT(cEntityList & a_Entities, const cParsedNBT & a_N
 void cWSSAnvil::LoadZombieFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
 	int IsVillagerIdx = a_NBT.FindChildByName(a_TagIdx, "IsVillager");
-
-	if (IsVillagerIdx < 0) { return; }
+	if (IsVillagerIdx < 0)
+	{
+		return;
+	}
 
 	bool IsVillagerZombie = ((a_NBT.GetByte(IsVillagerIdx) == 1) ? true : false);
 
-	std::auto_ptr<cZombie> Monster(new cZombie(IsVillagerZombie));
+	std::unique_ptr<cZombie> Monster(new cZombie(IsVillagerZombie));
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
@@ -2599,7 +2666,7 @@ void cWSSAnvil::LoadZombieFromNBT(cEntityList & a_Entities, const cParsedNBT & a
 
 void cWSSAnvil::LoadPigZombieFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx)
 {
-	std::auto_ptr<cZombiePigman> Monster(new cZombiePigman());
+	std::unique_ptr<cZombiePigman> Monster(new cZombiePigman());
 	if (!LoadEntityBaseFromNBT(*Monster.get(), a_NBT, a_TagIdx))
 	{
 		return;
diff --git a/src/WorldStorage/WSSAnvil.h b/src/WorldStorage/WSSAnvil.h
index 9c579a617..7a98a9a04 100644
--- a/src/WorldStorage/WSSAnvil.h
+++ b/src/WorldStorage/WSSAnvil.h
@@ -148,6 +148,7 @@ protected:
 	cBlockEntity * LoadDropperFromNBT     (const cParsedNBT & a_NBT, int a_TagIdx, int a_BlockX, int a_BlockY, int a_BlockZ);
 	cBlockEntity * LoadFlowerPotFromNBT   (const cParsedNBT & a_NBT, int a_TagIdx, int a_BlockX, int a_BlockY, int a_BlockZ);
 	cBlockEntity * LoadFurnaceFromNBT     (const cParsedNBT & a_NBT, int a_TagIdx, int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
+	cBlockEntity * LoadMobSpawnerFromNBT  (const cParsedNBT & a_NBT, int a_TagIdx, int a_BlockX, int a_BlockY, int a_BlockZ);
 	cBlockEntity * LoadHopperFromNBT      (const cParsedNBT & a_NBT, int a_TagIdx, int a_BlockX, int a_BlockY, int a_BlockZ);
 	cBlockEntity * LoadJukeboxFromNBT     (const cParsedNBT & a_NBT, int a_TagIdx, int a_BlockX, int a_BlockY, int a_BlockZ);
 	cBlockEntity * LoadMobHeadFromNBT     (const cParsedNBT & a_NBT, int a_TagIdx, int a_BlockX, int a_BlockY, int a_BlockZ);
diff --git a/src/XMLParser.h b/src/XMLParser.h
index 5b53e55cf..ea341bce6 100644
--- a/src/XMLParser.h
+++ b/src/XMLParser.h
@@ -105,11 +105,11 @@ public:
 		Destroy ();
 
 		// If the encoding or seperator are empty, then nullptr
-		if (pszEncoding != nullptr && pszEncoding [0] == 0)
+		if ((pszEncoding != nullptr) && (pszEncoding[0] == 0))
 		{
 			pszEncoding = nullptr;
 		}
-		if (pszSep != nullptr && pszSep [0] == 0)
+		if ((pszSep != nullptr) && (pszSep[0] == 0))
 		{
 			pszSep = nullptr;
 		}
@@ -147,7 +147,7 @@ public:
 	bool Parse (const char *pszBuffer, int nLength, bool fIsFinal = true)
 	{
 		assert (m_p != nullptr);
-		return XML_Parse (m_p, pszBuffer, nLength, fIsFinal) != 0;
+		return (XML_Parse (m_p, pszBuffer, nLength, fIsFinal) != 0);
 	}
 
 	// @cmember Parse internal buffer
@@ -254,7 +254,9 @@ protected:
 			XML_SetDefaultHandlerExpand (m_p, fEnable ? DefaultHandler : nullptr);
 		}
 		else
+		{
 			XML_SetDefaultHandler (m_p, fEnable ? DefaultHandler : nullptr);
+		}
 	}
 	
 	// @cmember Enable/Disable external entity ref handler
@@ -402,11 +404,17 @@ public:
 	{
 		XML_expat_version v = XML_ExpatVersionInfo ();
 		if (pnMajor)
+		{
 			*pnMajor = v .major;
+		}
 		if (pnMinor)
+		{
 			*pnMinor = v .minor;
+		}
 		if (pnMicro)
+		{
 			*pnMicro = v .micro;
+		}
 	}
 
 	// @cmember Get last error string
diff --git a/src/main.cpp b/src/main.cpp
index 463c54c28..d4adc1ed9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -61,6 +61,7 @@ void NonCtrlHandler(int a_Signal)
 			std::signal(SIGSEGV, SIG_DFL);
 			LOGERROR("  D:    | MCServer has encountered an error and needs to close");
 			LOGERROR("Details | SIGSEGV: Segmentation fault");
+			PrintStackTrace();
 			abort();
 		}
 		case SIGABRT:
@@ -71,6 +72,7 @@ void NonCtrlHandler(int a_Signal)
 			std::signal(a_Signal, SIG_DFL);
 			LOGERROR("  D:    | MCServer has encountered an error and needs to close");
 			LOGERROR("Details | SIGABRT: Server self-terminated due to an internal fault");
+			PrintStackTrace();
 			abort();
 		}
 		case SIGINT:
@@ -137,6 +139,9 @@ LONG WINAPI LastChanceExceptionFilter(__in struct _EXCEPTION_POINTERS * a_Except
 	g_WriteMiniDump(GetCurrentProcess(), GetCurrentProcessId(), dumpFile, g_DumpFlags, (a_ExceptionInfo) ? &ExcInformation : nullptr, nullptr, nullptr);
 	CloseHandle(dumpFile);
 
+	// Print the stack trace for the basic debugging:
+	PrintStackTrace();
+
 	// Revert to old stack:
 	_asm
 	{
@@ -158,9 +163,9 @@ BOOL CtrlHandler(DWORD fdwCtrlType)
 	cRoot::m_TerminateEventRaised = true;
 	LOGD("Terminate event raised from the Windows CtrlHandler");
 
-	if (fdwCtrlType == CTRL_CLOSE_EVENT)  // Console window closed via 'x' button, Windows will try to close immediately, therefore...
+	while (!g_ServerTerminated)
 	{
-		while (!g_ServerTerminated) { cSleep::MilliSleep(100); }  // Delay as much as possible to try to get the server to shut down cleanly
+		std::this_thread::sleep_for(std::chrono::milliseconds(50));  // Delay as much as possible to try to get the server to shut down cleanly
 	}
 
 	return TRUE;
@@ -182,7 +187,7 @@ int main( int argc, char **argv)
 	#if defined(_MSC_VER) && defined(_DEBUG) && defined(ENABLE_LEAK_FINDER)
 	InitLeakFinder();
 	#endif
-	
+
 	// Magic code to produce dump-files on Windows if the server crashes:
 	#if defined(_WIN32) && !defined(_WIN64) && defined(_MSC_VER)
 	HINSTANCE hDbgHelp = LoadLibrary("DBGHELP.DLL");