9 files changed, 93 insertions, 83 deletions

diff --git a/src/BlockEntities/CommandBlockEntity.cpp b/src/BlockEntities/CommandBlockEntity.cpp
index 45f8a3e4d..dd0858378 100644
--- a/src/BlockEntities/CommandBlockEntity.cpp
+++ b/src/BlockEntities/CommandBlockEntity.cpp
@@ -13,6 +13,7 @@
 #include "../Root.h"
 #include "../Server.h"  // ExecuteConsoleCommand()
 #include "../Chunk.h"
+#include "../ChatColor.h"
 
 
 
@@ -206,15 +207,28 @@ void cCommandBlockEntity::Execute()
 		virtual void Out(const AString & a_Text)
 		{
 			// Overwrite field
-			m_CmdBlock->SetLastOutput(a_Text);
+			m_CmdBlock->SetLastOutput(cClientHandle::FormatChatPrefix(m_CmdBlock->GetWorld()->ShouldUseChatPrefixes(), "SUCCESS", cChatColor::Green, cChatColor::White) + a_Text);
 		}
 	} CmdBlockOutCb(this);
 
-	LOGD("cCommandBlockEntity: Executing command %s", m_Command.c_str());
-
-	cServer * Server = cRoot::Get()->GetServer();
-
-	Server->ExecuteConsoleCommand(m_Command, CmdBlockOutCb);
+	// Administrator commands are not executable by command blocks:
+	if (
+		(m_Command != "stop") &&
+		(m_Command != "restart") &&
+		(m_Command != "kick") &&
+		(m_Command != "ban") &&
+		(m_Command != "ipban")
+	)
+	{
+		cServer * Server = cRoot::Get()->GetServer();
+		LOGD("cCommandBlockEntity: Executing command %s", m_Command.c_str());
+		Server->ExecuteConsoleCommand(m_Command, CmdBlockOutCb);
+	}
+	else
+	{
+		SetLastOutput(cClientHandle::FormatChatPrefix(GetWorld()->ShouldUseChatPrefixes(), "FAILURE", cChatColor::Rose, cChatColor::White) + "Adminstration commands can not be executed");
+		LOGD("cCommandBlockEntity: Prevented execution of administration command %s", m_Command.c_str());
+	}
 
 	// TODO 2014-01-18 xdot: Update the signal strength.
 	m_Result = 0;
diff --git a/src/ChunkMap.cpp b/src/ChunkMap.cpp
index dd8be0631..a3692ef11 100644
--- a/src/ChunkMap.cpp
+++ b/src/ChunkMap.cpp
@@ -1880,21 +1880,19 @@ void cChunkMap::DoExplosionAt(double a_ExplosionSize, double a_BlockX, double a_
 							}
 							else if ((m_World->GetTNTShrapnelLevel() > slNone) && (m_World->GetTickRandomNumber(100) < 20))  // 20% chance of flinging stuff around
 							{
-								if (!cBlockInfo::FullyOccupiesVoxel(Block))
+								// If the block is shrapnel-able, make a falling block entity out of it:
+								if (
+									((m_World->GetTNTShrapnelLevel() == slAll) && cBlockInfo::FullyOccupiesVoxel(Block)) ||
+									((m_World->GetTNTShrapnelLevel() == slGravityAffectedOnly) && ((Block == E_BLOCK_SAND) || (Block == E_BLOCK_GRAVEL)))
+								)
 								{
-									break;
+									m_World->SpawnFallingBlock(bx + x, by + y + 5, bz + z, Block, area.GetBlockMeta(bx + x, by + y, bz + z));
 								}
-								else if ((m_World->GetTNTShrapnelLevel() == slGravityAffectedOnly) && ((Block != E_BLOCK_SAND) && (Block != E_BLOCK_GRAVEL)))
-								{
-									break;
-								}
-								m_World->SpawnFallingBlock(bx + x, by + y + 5, bz + z, Block, area.GetBlockMeta(bx + x, by + y, bz + z));
 							}
 
 							area.SetBlockTypeMeta(bx + x, by + y, bz + z, E_BLOCK_AIR, 0);
 							a_BlocksAffected.push_back(Vector3i(bx + x, by + y, bz + z));
 							break;
-							
 						}
 					}  // switch (BlockType)
 				}  // for z
@@ -1916,51 +1914,31 @@ void cChunkMap::DoExplosionAt(double a_ExplosionSize, double a_BlockX, double a_
 
 		virtual bool Item(cEntity * a_Entity) override
 		{
-			if (a_Entity->IsPickup())
-			{
-				if (((cPickup *)a_Entity)->GetAge() < 20)  // If pickup age is smaller than one second, it is invincible (so we don't kill pickups that were just spawned)
-				{
-					return false;
-				}
-			}
-
-			Vector3d EntityPos = a_Entity->GetPosition();
-			cBoundingBox bbEntity(EntityPos, a_Entity->GetWidth() / 2, a_Entity->GetHeight());
-
-			if (!m_bbTNT.IsInside(bbEntity))  // IsInside actually acts like DoesSurround
+			if (a_Entity->IsPickup() && (a_Entity->GetTicksAlive() < 20))
 			{
+				// If pickup age is smaller than one second, it is invincible (so we don't kill pickups that were just spawned)
 				return false;
 			}
-			
-			Vector3d AbsoluteEntityPos(abs(EntityPos.x), abs(EntityPos.y), abs(EntityPos.z));
-
-			// Work out how far we are from the edge of the TNT's explosive effect
-			AbsoluteEntityPos -= m_ExplosionPos;
-
-			// All to positive
-			AbsoluteEntityPos.x = abs(AbsoluteEntityPos.x);
-			AbsoluteEntityPos.y = abs(AbsoluteEntityPos.y);
-			AbsoluteEntityPos.z = abs(AbsoluteEntityPos.z);
-
-			double FinalDamage = (((1 / AbsoluteEntityPos.x) + (1 / AbsoluteEntityPos.y) + (1 / AbsoluteEntityPos.z)) * 2) * m_ExplosionSize;
-
-			// Clip damage values
-			FinalDamage = Clamp(FinalDamage, 0.0, (double)a_Entity->GetMaxHealth());
 
+			Vector3d DistanceFromExplosion = a_Entity->GetPosition() - m_ExplosionPos;
+			
 			if (!a_Entity->IsTNT() && !a_Entity->IsFallingBlock())  // Don't apply damage to other TNT entities and falling blocks, they should be invincible
 			{
-				a_Entity->TakeDamage(dtExplosion, NULL, (int)FinalDamage, 0);
-			}
+				cBoundingBox bbEntity(a_Entity->GetPosition(), a_Entity->GetWidth() / 2, a_Entity->GetHeight());
 
-			// Apply force to entities around the explosion - code modified from World.cpp DoExplosionAt()
-			Vector3d distance_explosion = a_Entity->GetPosition() - m_ExplosionPos;
-			if (distance_explosion.SqrLength() < 4096.0)
-			{
-				distance_explosion.Normalize();
-				distance_explosion *= m_ExplosionSize * m_ExplosionSize;
+				if (!m_bbTNT.IsInside(bbEntity))  // If bbEntity is inside bbTNT, not vice versa!
+				{
+					return false;
+				}
 
-				a_Entity->AddSpeed(distance_explosion);
+				// Ensure that the damage dealt is inversely proportional to the distance to the TNT centre - the closer a player is, the harder they are hit
+				a_Entity->TakeDamage(dtExplosion, NULL, (int)((1 / DistanceFromExplosion.Length()) * 6 * m_ExplosionSize), 0);
 			}
+
+			// Apply force to entities around the explosion - code modified from World.cpp DoExplosionAt()
+			DistanceFromExplosion.Normalize();
+			DistanceFromExplosion *= m_ExplosionSize * m_ExplosionSize;
+			a_Entity->AddSpeed(DistanceFromExplosion);
 			
 			return false;
 		}
diff --git a/src/CraftingRecipes.cpp b/src/CraftingRecipes.cpp
index 223184c64..ed3409207 100644
--- a/src/CraftingRecipes.cpp
+++ b/src/CraftingRecipes.cpp
@@ -367,7 +367,7 @@ void cCraftingRecipes::ClearRecipes(void)
 void cCraftingRecipes::AddRecipeLine(int a_LineNum, const AString & a_RecipeLine)
 {
 	AString RecipeLine(a_RecipeLine);
-	RecipeLine.erase(std::remove(RecipeLine.begin(), RecipeLine.end(), ' '), RecipeLine.end());
+	RecipeLine.erase(std::remove_if(RecipeLine.begin(), RecipeLine.end(), isspace), RecipeLine.end());
 
 	AStringVector Sides = StringSplit(RecipeLine, "=");
 	if (Sides.size() != 2)
diff --git a/src/Entities/ItemFrame.cpp b/src/Entities/ItemFrame.cpp
index f0b0c8c65..0bc10ec60 100644
--- a/src/Entities/ItemFrame.cpp
+++ b/src/Entities/ItemFrame.cpp
@@ -55,7 +55,6 @@ void cItemFrame::KilledBy(TakeDamageInfo & a_TDI)
 {
 	if (m_Item.IsEmpty())
 	{
-		SetHealth(0);
 		super::KilledBy(a_TDI);
 		Destroy();
 		return;
diff --git a/src/Items/ItemHandler.h b/src/Items/ItemHandler.h
index 8b554ee34..67c250a97 100644
--- a/src/Items/ItemHandler.h
+++ b/src/Items/ItemHandler.h
@@ -75,7 +75,7 @@ public:
 		int    FoodLevel;
 		double Saturation;
 
-		FoodInfo(int a_FoodLevel, double a_Saturation, int a_PoisonChance = 0) :
+		FoodInfo(int a_FoodLevel, double a_Saturation) :
 			FoodLevel(a_FoodLevel),
 			Saturation(a_Saturation)
 		{
diff --git a/src/Root.cpp b/src/Root.cpp
index ef66f9870..f04cbf08b 100644
--- a/src/Root.cpp
+++ b/src/Root.cpp
@@ -468,16 +468,6 @@ void cRoot::QueueExecuteConsoleCommand(const AString & a_Cmd, cCommandOutputCall
 
 void cRoot::QueueExecuteConsoleCommand(const AString & a_Cmd)
 {
-	// Some commands are built-in:
-	if (a_Cmd == "stop")
-	{
-		m_bStop = true;
-	}
-	else if (a_Cmd == "restart")
-	{
-		m_bRestart = true;
-	}
-
 	// Put the command into a queue (Alleviates FS #363):
 	cCSLock Lock(m_CSPendingCommands);
 	m_PendingCommands.push_back(cCommand(a_Cmd, new cLogCommandDeleteSelfOutputCallback));
@@ -489,14 +479,16 @@ void cRoot::QueueExecuteConsoleCommand(const AString & a_Cmd)
 
 void cRoot::ExecuteConsoleCommand(const AString & a_Cmd, cCommandOutputCallback & a_Output)
 {
-	// Some commands are built-in:
+	// cRoot handles stopping and restarting due to our access to controlling variables
 	if (a_Cmd == "stop")
 	{
 		m_bStop = true;
+		return;
 	}
 	else if (a_Cmd == "restart")
 	{
 		m_bRestart = true;
+		return;
 	}
 
 	LOG("Executing console command: \"%s\"", a_Cmd.c_str());
diff --git a/src/Server.cpp b/src/Server.cpp
index 958fe83c8..069e2a169 100644
--- a/src/Server.cpp
+++ b/src/Server.cpp
@@ -458,56 +458,80 @@ void cServer::ExecuteConsoleCommand(const AString & a_Cmd, cCommandOutputCallbac
 		return;
 	}
 
-	// Special handling: "stop" and "restart" are built in
-	if ((split[0].compare("stop") == 0) || (split[0].compare("restart") == 0))
-	{
-		return;
-	}
+	// "stop" and "restart" are handled in cRoot::ExecuteConsoleCommand, our caller, due to its access to controlling variables
 	
 	// "help" and "reload" are to be handled by MCS, so that they work no matter what
 	if (split[0] == "help")
 	{
 		PrintHelp(split, a_Output);
+		a_Output.Finished();
 		return;
 	}
 	else if (split[0] == "reload")
 	{
 		cPluginManager::Get()->ReloadPlugins();
+		a_Output.Finished();
 		return;
 	}
 	else if (split[0] == "reloadplugins")
 	{
 		cPluginManager::Get()->ReloadPlugins();
+		a_Output.Out("Plugins reloaded");
+		a_Output.Finished();
 		return;
 	}
 	else if (split[0] == "load")
 	{
 		if (split.size() > 1)
 		{
-			cPluginManager::Get()->LoadPlugin(split[1]);
-
-			return;
+			a_Output.Out(cPluginManager::Get()->LoadPlugin(split[1]) ? "Plugin loaded" : "Error occurred loading plugin");
 		}
 		else
 		{
-			a_Output.Out("No plugin given! Command: load <pluginname>");
-			a_Output.Finished();
-			return;
+			a_Output.Out("Usage: load <pluginname>");
 		}
+		a_Output.Finished();
+		return;
 	}
 	else if (split[0] == "unload")
 	{
 		if (split.size() > 1)
 		{
 			cPluginManager::Get()->RemovePlugin(cPluginManager::Get()->GetPlugin(split[1]));
-			return;
+			a_Output.Out("Plugin unloaded");
 		}
 		else
 		{
-			a_Output.Out("No plugin given! Command: unload <pluginname>");
-			a_Output.Finished();
-			return;
+			a_Output.Out("Usage: unload <pluginname>");
 		}
+		a_Output.Finished();
+		return;
+	}
+	if (split[0] == "destroyentities")
+	{
+		class WorldCallback : public cWorldListCallback
+		{
+			virtual bool Item(cWorld * a_World) override
+			{
+				class EntityCallback : public cEntityCallback
+				{
+					virtual bool Item(cEntity * a_Entity) override
+					{
+						if (!a_Entity->IsPlayer())
+						{
+							a_Entity->Destroy();
+						}
+						return false;
+					}
+				} EC;
+				a_World->ForEachEntity(EC);
+				return false;
+			}
+		} WC;
+		cRoot::Get()->ForEachWorld(WC);
+		a_Output.Out("Destroyed all entities");
+		a_Output.Finished();
+		return;
 	}
 
 	// There is currently no way a plugin can do these (and probably won't ever be):
@@ -602,6 +626,7 @@ void cServer::BindBuiltInConsoleCommands(void)
 	PlgMgr->BindConsoleCommand("chunkstats", NULL, " - Displays detailed chunk memory statistics");
 	PlgMgr->BindConsoleCommand("load <pluginname>", NULL, " - Adds and enables the specified plugin");
 	PlgMgr->BindConsoleCommand("unload <pluginname>", NULL, " - Disables the specified plugin");
+	PlgMgr->BindConsoleCommand("destroyentities", NULL, " - Destroys all entities in all worlds");
 
 	#if defined(_MSC_VER) && defined(_DEBUG) && defined(ENABLE_LEAK_FINDER)
 	PlgMgr->BindConsoleCommand("dumpmem", NULL, " - Dumps all used memory blocks together with their callstacks into memdump.xml");
diff --git a/src/World.cpp b/src/World.cpp
index b01e53638..99e09c658 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -1226,24 +1226,26 @@ void cWorld::DoExplosionAt(double a_ExplosionSize, double a_BlockX, double a_Blo
 		return;
 	}
 	
-	// TODO: Add damage to entities and implement block hardiness
+	// TODO: Implement block hardiness
 	Vector3d explosion_pos = Vector3d(a_BlockX, a_BlockY, a_BlockZ);
 	cVector3iArray BlocksAffected;
 	m_ChunkMap->DoExplosionAt(a_ExplosionSize, a_BlockX, a_BlockY, a_BlockZ, BlocksAffected);
 	BroadcastSoundEffect("random.explode", (double)a_BlockX, (double)a_BlockY, (double)a_BlockZ, 1.0f, 0.6f);
+
 	{
 		cCSLock Lock(m_CSPlayers);
 		for (cPlayerList::iterator itr = m_Players.begin(); itr != m_Players.end(); ++itr)
 		{
 			cClientHandle * ch = (*itr)->GetClientHandle();
-			if ((ch == NULL) || !ch->IsLoggedIn() || ch->IsDestroyed())
+			if (ch == NULL)
 			{
 				continue;
 			}
+
 			Vector3d distance_explosion = (*itr)->GetPosition() - explosion_pos;
 			if (distance_explosion.SqrLength() < 4096.0)
 			{
-				double real_distance = std::max(0.004, sqrt(distance_explosion.SqrLength()));
+				double real_distance = std::max(0.004, distance_explosion.Length());
 				double power = a_ExplosionSize / real_distance;
 				if (power <= 1)
 				{
@@ -1255,6 +1257,7 @@ void cWorld::DoExplosionAt(double a_ExplosionSize, double a_BlockX, double a_Blo
 			}
 		}
 	}
+
 	cPluginManager::Get()->CallHookExploded(*this, a_ExplosionSize, a_CanCauseFire, a_BlockX, a_BlockY, a_BlockZ, a_Source, a_SourceData);
 }
 
diff --git a/src/WorldStorage/NBTChunkSerializer.cpp b/src/WorldStorage/NBTChunkSerializer.cpp
index e435a1b1f..68e541eba 100644
--- a/src/WorldStorage/NBTChunkSerializer.cpp
+++ b/src/WorldStorage/NBTChunkSerializer.cpp
@@ -615,7 +615,6 @@ void cNBTChunkSerializer::AddProjectileEntity(cProjectileEntity * a_Projectile)
 {
 	m_Writer.BeginCompound("");
 		AddBasicEntity(a_Projectile, a_Projectile->GetMCAClassName());
-		Vector3d Pos = a_Projectile->GetPosition();
 		m_Writer.AddByte("inGround", a_Projectile->IsInGround() ? 1 : 0);
 		
 		switch (a_Projectile->GetProjectileKind())