10 files changed, 265 insertions, 331 deletions

diff --git a/src/BlockID.cpp b/src/BlockID.cpp
index b609af571..69a3a817c 100644
--- a/src/BlockID.cpp
+++ b/src/BlockID.cpp
@@ -20,7 +20,7 @@ bool       g_BlockPistonBreakable[256];
 bool       g_BlockIsSnowable[256];
 bool       g_BlockRequiresSpecialTool[256];
 bool       g_BlockIsSolid[256];
-bool       g_BlockIsTorchPlaceable[256];
+bool       g_BlockFullyOccupiesVoxel[256];
 
 
 
@@ -491,7 +491,7 @@ public:
 		memset(g_BlockTransparent,         0x00, sizeof(g_BlockTransparent));
 		memset(g_BlockOneHitDig,           0x00, sizeof(g_BlockOneHitDig));
 		memset(g_BlockPistonBreakable,     0x00, sizeof(g_BlockPistonBreakable));
-		memset(g_BlockIsTorchPlaceable,    0x00, sizeof(g_BlockIsTorchPlaceable));
+		memset(g_BlockFullyOccupiesVoxel,  0x00, sizeof(g_BlockFullyOccupiesVoxel));
 		
 		// Setting bools to true must be done manually, see http://forum.mc-server.org/showthread.php?tid=629&pid=5415#pid5415
 		for (size_t i = 0; i < ARRAYCOUNT(g_BlockIsSnowable); i++)
@@ -791,67 +791,67 @@ public:
 		g_BlockIsSolid[E_BLOCK_WOODEN_SLAB]           = false;
 
 		// Torch placeable blocks:
-		g_BlockIsTorchPlaceable[E_BLOCK_BEDROCK]               = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_BLOCK_OF_COAL]         = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_BLOCK_OF_REDSTONE]     = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_BOOKCASE]              = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_BRICK]                 = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_CLAY]                  = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_COAL_ORE]              = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_COBBLESTONE]           = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_COMMAND_BLOCK]         = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_CRAFTING_TABLE]        = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_DIAMOND_BLOCK]         = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_DIAMOND_ORE]           = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_DIRT]                  = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_DISPENSER]             = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_DOUBLE_STONE_SLAB]     = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_DOUBLE_WOODEN_SLAB]    = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_DROPPER]               = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_EMERALD_BLOCK]         = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_EMERALD_ORE]           = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_END_STONE]             = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_FURNACE]               = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_GLOWSTONE]             = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_GOLD_BLOCK]            = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_GOLD_ORE]              = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_GRASS]                 = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_GRAVEL]                = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_HARDENED_CLAY]         = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_HAY_BALE]              = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_HUGE_BROWN_MUSHROOM]   = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_HUGE_RED_MUSHROOM]     = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_IRON_BLOCK]            = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_IRON_ORE]              = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_JACK_O_LANTERN]        = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_JUKEBOX]               = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_LAPIS_BLOCK]           = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_LAPIS_ORE]             = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_LOG]                   = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_MELON]                 = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_MOSSY_COBBLESTONE]     = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_MYCELIUM]              = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_NETHERRACK]            = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_NETHER_BRICK]          = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_NETHER_QUARTZ_ORE]     = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_NOTE_BLOCK]            = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_OBSIDIAN]              = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_PACKED_ICE]            = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_PLANKS]                = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_PUMPKIN]               = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_QUARTZ_BLOCK]          = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_REDSTONE_LAMP_OFF]     = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_REDSTONE_LAMP_ON]      = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_REDSTONE_ORE]          = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_REDSTONE_ORE_GLOWING]  = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_SANDSTONE]             = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_SAND]                  = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_SILVERFISH_EGG]        = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_SPONGE]                = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_STAINED_CLAY]          = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_WOOL]                  = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_STONE]                 = true;
-		g_BlockIsTorchPlaceable[E_BLOCK_STONE_BRICKS]          = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_BEDROCK]               = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_BLOCK_OF_COAL]         = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_BLOCK_OF_REDSTONE]     = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_BOOKCASE]              = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_BRICK]                 = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_CLAY]                  = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_COAL_ORE]              = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_COBBLESTONE]           = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_COMMAND_BLOCK]         = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_CRAFTING_TABLE]        = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_DIAMOND_BLOCK]         = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_DIAMOND_ORE]           = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_DIRT]                  = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_DISPENSER]             = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_DOUBLE_STONE_SLAB]     = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_DOUBLE_WOODEN_SLAB]    = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_DROPPER]               = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_EMERALD_BLOCK]         = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_EMERALD_ORE]           = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_END_STONE]             = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_FURNACE]               = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_GLOWSTONE]             = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_GOLD_BLOCK]            = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_GOLD_ORE]              = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_GRASS]                 = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_GRAVEL]                = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_HARDENED_CLAY]         = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_HAY_BALE]              = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_HUGE_BROWN_MUSHROOM]   = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_HUGE_RED_MUSHROOM]     = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_IRON_BLOCK]            = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_IRON_ORE]              = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_JACK_O_LANTERN]        = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_JUKEBOX]               = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_LAPIS_BLOCK]           = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_LAPIS_ORE]             = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_LOG]                   = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_MELON]                 = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_MOSSY_COBBLESTONE]     = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_MYCELIUM]              = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_NETHERRACK]            = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_NETHER_BRICK]          = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_NETHER_QUARTZ_ORE]     = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_NOTE_BLOCK]            = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_OBSIDIAN]              = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_PACKED_ICE]            = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_PLANKS]                = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_PUMPKIN]               = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_QUARTZ_BLOCK]          = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_REDSTONE_LAMP_OFF]     = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_REDSTONE_LAMP_ON]      = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_REDSTONE_ORE]          = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_REDSTONE_ORE_GLOWING]  = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_SANDSTONE]             = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_SAND]                  = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_SILVERFISH_EGG]        = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_SPONGE]                = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_STAINED_CLAY]          = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_WOOL]                  = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_STONE]                 = true;
+		g_BlockFullyOccupiesVoxel[E_BLOCK_STONE_BRICKS]          = true;
 	}
 } BlockPropertiesInitializer;
 
diff --git a/src/BlockID.h b/src/BlockID.h
index 899336fa6..b31c589b9 100644
--- a/src/BlockID.h
+++ b/src/BlockID.h
@@ -906,7 +906,7 @@ extern bool       g_BlockPistonBreakable[256];
 extern bool       g_BlockIsSnowable[256];
 extern bool       g_BlockRequiresSpecialTool[256];
 extern bool       g_BlockIsSolid[256];
-extern bool       g_BlockIsTorchPlaceable[256];
+extern bool       g_BlockFullyOccupiesVoxel[256];
 
 
 
diff --git a/src/Blocks/BlockRedstone.h b/src/Blocks/BlockRedstone.h
index 1bd9995f2..5ffb77fb6 100644
--- a/src/Blocks/BlockRedstone.h
+++ b/src/Blocks/BlockRedstone.h
@@ -20,7 +20,7 @@ public:
 
 	virtual bool CanBeAt(int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
 	{
-		return ((a_RelY > 0) && g_BlockIsTorchPlaceable[a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ)]);
+		return ((a_RelY > 0) && g_BlockFullyOccupiesVoxel[a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ)]);
 	}
 	
 	
diff --git a/src/Blocks/BlockTorch.h b/src/Blocks/BlockTorch.h
index 9e543dfd7..faba9c4f5 100644
--- a/src/Blocks/BlockTorch.h
+++ b/src/Blocks/BlockTorch.h
@@ -98,7 +98,7 @@ public:
 
 	static bool CanBePlacedOn(BLOCKTYPE a_BlockType, char a_BlockFace)
 	{
-		if ( !g_BlockIsTorchPlaceable[a_BlockType] )
+		if ( !g_BlockFullyOccupiesVoxel[a_BlockType] )
 		{
 			return (a_BlockFace == BLOCK_FACE_TOP);  // Allow placement only when torch upright (for glass, etc.); exceptions won't even be sent by client, no need to handle
 		}
@@ -127,7 +127,7 @@ public:
 			{
 				return i;
 			}
-			else if ((g_BlockIsTorchPlaceable[BlockInQuestion]) && (i != BLOCK_FACE_BOTTOM))
+			else if ((g_BlockFullyOccupiesVoxel[BlockInQuestion]) && (i != BLOCK_FACE_BOTTOM))
 			{
 				// Otherwise, if block in that direction is torch placeable and we haven't gotten to it via the bottom face, return that face
 				return i;
@@ -161,7 +161,7 @@ public:
 			// No need to check for upright orientation, it was done when the torch was placed
 			return true;
 		}
-		else if ( !g_BlockIsTorchPlaceable[BlockInQuestion] )
+		else if ( !g_BlockFullyOccupiesVoxel[BlockInQuestion] )
 		{
 			return false;
 		}
diff --git a/src/ChunkDef.h b/src/ChunkDef.h
index edeb7c0a0..d1288994c 100644
--- a/src/ChunkDef.h
+++ b/src/ChunkDef.h
@@ -520,8 +520,10 @@ public:
 
 // Illegal in C++03: typedef std::list< cCoordWithData<X> > cCoordWithDataList<X>;
 typedef cCoordWithData<int>        cCoordWithInt;
+typedef cCoordWithData<BLOCKTYPE>  cCoordWithBlock;
 typedef std::list<cCoordWithInt>   cCoordWithIntList;
 typedef std::vector<cCoordWithInt> cCoordWithIntVector;
+typedef std::vector<cCoordWithBlock> cCoordWithBlockVector;
 
 
 
diff --git a/src/Defines.h b/src/Defines.h
index c75effa44..cc04d8026 100644
--- a/src/Defines.h
+++ b/src/Defines.h
@@ -41,8 +41,8 @@ extern bool g_BlockRequiresSpecialTool[256];
 /// Is this block solid (player cannot walk through)?
 extern bool g_BlockIsSolid[256];
 
-/// Can torches be placed on this block?
-extern bool g_BlockIsTorchPlaceable[256];
+/// Does this block fully occupy it's voxel - is it a 'full' block?
+extern bool g_BlockFullyOccupiesVoxel[256];
 
 /// Experience Orb setup
 enum
diff --git a/src/Items/ItemRedstoneDust.h b/src/Items/ItemRedstoneDust.h
index 38bf00ba6..de90c8075 100644
--- a/src/Items/ItemRedstoneDust.h
+++ b/src/Items/ItemRedstoneDust.h
@@ -27,7 +27,7 @@ public:
 		BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
 	) override
 	{
-		if (!g_BlockIsTorchPlaceable[a_World->GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ)]) // Some solid blocks, such as cocoa beans, are not suitable for dust
+		if (!g_BlockFullyOccupiesVoxel[a_World->GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ)]) // Some solid blocks, such as cocoa beans, are not suitable for dust
 		{
 			return false;
 		}
diff --git a/src/Server.h b/src/Server.h
index d79417fb0..703a7077e 100644
--- a/src/Server.h
+++ b/src/Server.h
@@ -107,7 +107,7 @@ public:												// tolua_export
 	/// Notifies the server that a player is being destroyed; the server uses this to adjust the number of players
 	void PlayerDestroying(const cPlayer * a_Player);
 
-	/* Returns base64 encoded favicon data (obtained from favicon.png) */
+	/** Returns base64 encoded favicon data (obtained from favicon.png) */
 	const AString & GetFaviconData(void) const { return m_FaviconData; }
 	
 	CryptoPP::RSA::PrivateKey & GetPrivateKey(void) { return m_PrivateKey; }
diff --git a/src/Simulator/RedstoneSimulator.cpp b/src/Simulator/RedstoneSimulator.cpp
index f65908729..6ab915d03 100644
--- a/src/Simulator/RedstoneSimulator.cpp
+++ b/src/Simulator/RedstoneSimulator.cpp
@@ -44,83 +44,46 @@ void cRedstoneSimulator::AddBlock(int a_BlockX, int a_BlockY, int a_BlockZ, cChu
 
 	int RelX = a_BlockX - a_Chunk->GetPosX() * cChunkDef::Width;
 	int RelZ = a_BlockZ - a_Chunk->GetPosZ() * cChunkDef::Width;
+	
+	BLOCKTYPE Block;
+	NIBBLETYPE Meta;
+	a_Chunk->GetBlockTypeMeta(RelX, a_BlockY, RelZ, Block, Meta);
 
-	if (!IsAllowedBlock(a_Chunk->GetBlock(RelX, a_BlockY, RelZ)))
-	{
-		return;
-	}
-
-	// Check for duplicates:
-	cRedstoneSimulatorChunkData & ChunkData = a_Chunk->GetRedstoneSimulatorData();
-	for (cRedstoneSimulatorChunkData::const_iterator itr = ChunkData.begin(); itr != ChunkData.end(); ++itr)
-	{
-		if ((itr->x == RelX) && (itr->y == a_BlockY) && (itr->z == RelZ))
-		{
-			return;
-		}
-	}
-
-	ChunkData.push_back(cCoordWithInt(RelX, a_BlockY, RelZ));
-}
-
-
-
-
-
-void cRedstoneSimulator::SimulateChunk(float a_Dt, int a_ChunkX, int a_ChunkZ, cChunk * a_Chunk)
-{
-	cRedstoneSimulatorChunkData & ChunkData = a_Chunk->GetRedstoneSimulatorData();
-	if (ChunkData.empty())
-	{
-		return;
-	}
-
-	int BaseX = a_Chunk->GetPosX() * cChunkDef::Width;
-	int BaseZ = a_Chunk->GetPosZ() * cChunkDef::Width;
+	// Every time a block is changed (AddBlock called), we want to go through all lists and check to see if the coordiantes stored within are still valid
+	// Checking only when a block is changed, as opposed to every tick, also improves performance
 
-	// Check to see if PoweredBlocks have invalid items (source is air or unpowered)
-	for (PoweredBlocksList::iterator itr = m_PoweredBlocks.begin(); itr != m_PoweredBlocks.end();)
+	for (PoweredBlocksList::iterator itr = m_PoweredBlocks.begin(); itr != m_PoweredBlocks.end(); ++itr)
 	{
-		int RelX = itr->a_SourcePos.x - a_ChunkX * cChunkDef::Width;
-		int RelZ = itr->a_SourcePos.z - a_ChunkZ * cChunkDef::Width;
-		int DestRelX = itr->a_BlockPos.x - a_ChunkX * cChunkDef::Width;
-		int DestRelZ = itr->a_BlockPos.z - a_ChunkZ * cChunkDef::Width;
-
-		BLOCKTYPE SourceBlockType;
-		NIBBLETYPE SourceBlockMeta;
-		BLOCKTYPE DestBlockType;
-		if (
-			!a_Chunk->UnboundedRelGetBlock(RelX, itr->a_SourcePos.y, RelZ, SourceBlockType, SourceBlockMeta) ||
-			!a_Chunk->UnboundedRelGetBlockType(DestRelX, itr->a_BlockPos.y, DestRelZ, DestBlockType)
-			)
+		if (!itr->a_SourcePos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
 		{
 			continue;
 		}
 
-		if (SourceBlockType != itr->a_SourceBlock)
+		if (!IsPotentialSource(Block))
 		{
-			LOGD("cRedstoneSimulator: Erased block %s from powered blocks list due to present/past block type mismatch", ItemToFullString(itr->a_SourceBlock).c_str());
-			itr = m_PoweredBlocks.erase(itr);
+			LOGD("cRedstoneSimulator: Erased block @ {%i, %i, %i} from powered blocks list as it no longer connected to a source", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z);
+			m_PoweredBlocks.erase(itr);
+			break;
 		}
 		else if (
 			// Changeable sources
-			((SourceBlockType == E_BLOCK_REDSTONE_WIRE) && (SourceBlockMeta == 0)) ||
-			((SourceBlockType == E_BLOCK_LEVER) && !IsLeverOn(SourceBlockMeta)) ||
-			((SourceBlockType == E_BLOCK_DETECTOR_RAIL) && (SourceBlockMeta & 0x08) == 0x08) ||
-			(((SourceBlockType == E_BLOCK_STONE_BUTTON) || (SourceBlockType == E_BLOCK_WOODEN_BUTTON)) && (!IsButtonOn(SourceBlockMeta))) ||
-			(((SourceBlockType == E_BLOCK_STONE_PRESSURE_PLATE) || (SourceBlockType == E_BLOCK_WOODEN_PRESSURE_PLATE)) && (SourceBlockMeta == 0))
+			((Block == E_BLOCK_REDSTONE_WIRE) && (Meta == 0)) ||
+			((Block == E_BLOCK_LEVER) && !IsLeverOn(Meta)) ||
+			((Block == E_BLOCK_DETECTOR_RAIL) && (Meta & 0x08) == 0x08) ||
+			(((Block == E_BLOCK_STONE_BUTTON) || (Block == E_BLOCK_WOODEN_BUTTON)) && (!IsButtonOn(Meta))) ||
+			(((Block == E_BLOCK_STONE_PRESSURE_PLATE) || (Block == E_BLOCK_WOODEN_PRESSURE_PLATE)) && (Meta == 0))
 			)
 		{
-			LOGD("cRedstoneSimulator: Erased block %s from powered blocks list due to present/past metadata mismatch", ItemToFullString(itr->a_SourceBlock).c_str());
-			itr = m_PoweredBlocks.erase(itr);
+			LOGD("cRedstoneSimulator: Erased block @ {%i, %i, %i} from powered blocks list due to present/past metadata mismatch", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z);
+			m_PoweredBlocks.erase(itr);
+			break;
 		}
-		else if (SourceBlockType == E_BLOCK_DAYLIGHT_SENSOR)
+		else if (Block == E_BLOCK_DAYLIGHT_SENSOR)
 		{
 			if (!a_Chunk->IsLightValid())
 			{
-				m_World.QueueLightChunk(a_ChunkX, a_ChunkZ);
-				++itr;
-				continue;
+				m_World.QueueLightChunk(a_Chunk->GetPosX(), a_Chunk->GetPosZ());
+				break;
 			}
 			else
 			{
@@ -130,126 +93,125 @@ void cRedstoneSimulator::SimulateChunk(float a_Dt, int a_ChunkX, int a_ChunkZ, c
 				if (a_Chunk->GetTimeAlteredLight(SkyLight) <= 8) // Could use SkyLight - m_World.GetSkyDarkness();
 				{
 					LOGD("cRedstoneSimulator: Erased daylight sensor from powered blocks list due to insufficient light level");
-					itr = m_PoweredBlocks.erase(itr);
-				}
-				else
-				{
-					++itr;
-					continue;
+					m_PoweredBlocks.erase(itr);
+					break;
 				}
 			}
 		}
-		else if ((SourceBlockType == E_BLOCK_REDSTONE_WIRE) && (DestBlockType == E_BLOCK_REDSTONE_WIRE))
+	}
+
+	for (LinkedBlocksList::iterator itr = m_LinkedPoweredBlocks.begin(); itr != m_LinkedPoweredBlocks.end(); ++itr)
+	{
+		if (itr->a_SourcePos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
 		{
-			// It is simply not allowed that a wire powers another wire, presuming that data here is sane and a dest and source are beside each other
-			LOGD("cRedstoneSimulator: Erased redstone wire from powered blocks list because its source was also wire");
-			itr = m_PoweredBlocks.erase(itr);
+			if (!IsPotentialSource(Block))
+			{
+				LOGD("cRedstoneSimulator: Erased block @ {%i, %i, %i} from linked powered blocks list as it is no longer connected to a source", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z);
+				m_LinkedPoweredBlocks.erase(itr);
+				break;
+			}
+			else if (
+				// Things that can send power through a block but which depends on meta
+				((Block == E_BLOCK_REDSTONE_WIRE) && (Meta == 0)) ||
+				((Block == E_BLOCK_LEVER) && !IsLeverOn(Meta)) ||
+				(((Block == E_BLOCK_STONE_BUTTON) || (Block == E_BLOCK_WOODEN_BUTTON)) && (!IsButtonOn(Meta)))
+				)
+			{
+				LOGD("cRedstoneSimulator: Erased block @ {%i, %i, %i} from linked powered blocks list due to present/past metadata mismatch", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z);
+				m_LinkedPoweredBlocks.erase(itr);
+				break;
+			}
 		}
-		else
+		else if (itr->a_MiddlePos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
 		{
-			++itr;
+			if (!IsViableMiddleBlock(Block))
+			{
+				LOGD("cRedstoneSimulator: Erased block @ {%i, %i, %i} from linked powered blocks list as it is no longer powered through a valid middle block", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z);
+				m_LinkedPoweredBlocks.erase(itr);
+				break;
+			}
 		}
 	}
 
-	// Check to see if LinkedPoweredBlocks have invalid items: source, block powered through, or power destination block has changed
-	for (LinkedBlocksList::iterator itr = m_LinkedPoweredBlocks.begin(); itr != m_LinkedPoweredBlocks.end();)
+	for (SimulatedPlayerToggleableList::iterator itr = m_SimulatedPlayerToggleableBlocks.begin(); itr != m_SimulatedPlayerToggleableBlocks.end(); ++itr)
 	{
-		int RelX = itr->a_SourcePos.x - a_ChunkX * cChunkDef::Width;
-		int RelZ = itr->a_SourcePos.z - a_ChunkZ * cChunkDef::Width;
-		int MidRelX = itr->a_MiddlePos.x - a_ChunkX * cChunkDef::Width;
-		int MidRelZ = itr->a_MiddlePos.z - a_ChunkZ * cChunkDef::Width;
-
-		BLOCKTYPE SourceBlockType;
-		NIBBLETYPE SourceBlockMeta;
-		BLOCKTYPE MiddleBlockType;
-		if (
-			!a_Chunk->UnboundedRelGetBlock(RelX, itr->a_SourcePos.y, RelZ, SourceBlockType, SourceBlockMeta) ||
-			!a_Chunk->UnboundedRelGetBlockType(MidRelX, itr->a_MiddlePos.y, MidRelZ, MiddleBlockType)
-			)
+		if (!itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
 		{
 			continue;
 		}
 
-		if (SourceBlockType != itr->a_SourceBlock)
-		{
-			LOGD("cRedstoneSimulator: Erased block %s from linked powered blocks list due to present/past block type mismatch", ItemToFullString(itr->a_SourceBlock).c_str());
-			itr = m_LinkedPoweredBlocks.erase(itr);
-		}
-		else if (MiddleBlockType != itr->a_MiddleBlock)
-		{
-			LOGD("cRedstoneSimulator: Erased block %s from linked powered blocks list due to present/past middle block mismatch", ItemToFullString(itr->a_SourceBlock).c_str());
-			itr = m_LinkedPoweredBlocks.erase(itr);
-		}
-		else if (
-			// Things that can send power through a block but which depends on meta
-			((SourceBlockType == E_BLOCK_REDSTONE_WIRE) && (SourceBlockMeta == 0)) ||
-			((SourceBlockType == E_BLOCK_LEVER) && !IsLeverOn(SourceBlockMeta)) ||
-			(((SourceBlockType == E_BLOCK_STONE_BUTTON) || (SourceBlockType == E_BLOCK_WOODEN_BUTTON)) && (!IsButtonOn(SourceBlockMeta)))
-			)
+		if (!IsAllowedBlock(Block))
 		{
-			LOGD("cRedstoneSimulator: Erased block %s from linked powered blocks list due to present/past metadata mismatch", ItemToFullString(itr->a_SourceBlock).c_str());
-			itr = m_LinkedPoweredBlocks.erase(itr);
-		}
-		else
-		{
-			++itr;
+			LOGD("cRedstoneSimulator: Erased block @ {%i, %i, %i} from toggleable simulated list as it is no longer redstone", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z);
+			m_SimulatedPlayerToggleableBlocks.erase(itr);
+			break;
 		}
 	}
 
-	for (SimulatedPlayerToggleableList::iterator itr = m_SimulatedPlayerToggleableBlocks.begin(); itr != m_SimulatedPlayerToggleableBlocks.end();)
+	for (RepeatersDelayList::iterator itr = m_RepeatersDelayList.begin(); itr != m_RepeatersDelayList.end(); ++itr)
 	{
-		int RelX = itr->a_BlockPos.x - a_ChunkX * cChunkDef::Width;
-		int RelZ = itr->a_BlockPos.z - a_ChunkZ * cChunkDef::Width;
-
-		BLOCKTYPE SourceBlockType;
-		if (!a_Chunk->UnboundedRelGetBlockType(RelX, itr->a_BlockPos.y, RelZ, SourceBlockType))
+		if (!itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
 		{
 			continue;
 		}
-		else if (!IsAllowedBlock(SourceBlockType))
+
+		if ((Block != E_BLOCK_REDSTONE_REPEATER_ON) && (Block != E_BLOCK_REDSTONE_REPEATER_OFF))
 		{
-			LOGD("cRedstoneSimulator: Erased block %s from toggleable simulated list as block is no longer redstone", ItemToFullString(SourceBlockType).c_str());
-			itr = m_SimulatedPlayerToggleableBlocks.erase(itr);
+			m_RepeatersDelayList.erase(itr);
+			break;
 		}
-		else
+	}
+
+	cRedstoneSimulatorChunkData & ChunkData = a_Chunk->GetRedstoneSimulatorData();
+	for (cRedstoneSimulatorChunkData::iterator itr = ChunkData.begin(); itr != ChunkData.end(); ++itr)
+	{
+		if ((itr->x == RelX) && (itr->y == a_BlockY) && (itr->z == RelZ)) // We are at an entry matching the current (changed) block
 		{
-			++itr;
+			if (!IsAllowedBlock(Block))
+			{
+				ChunkData.erase(itr); // The new blocktype is not redstone; it must be removed from this list
+			}
+			else
+			{
+				itr->Data = Block; // Update block information
+			}
+			return;
 		}
 	}
 
-	for (RepeatersDelayList::iterator itr = m_RepeatersDelayList.begin(); itr != m_RepeatersDelayList.end();)
+	if (!IsAllowedBlock(Block))
 	{
-		int RelX = itr->a_BlockPos.x - a_ChunkX * cChunkDef::Width;
-		int RelZ = itr->a_BlockPos.z - a_ChunkZ * cChunkDef::Width;
+		return;
+	}
 
-		BLOCKTYPE SourceBlockType;
-		if (!a_Chunk->UnboundedRelGetBlockType(RelX, itr->a_BlockPos.y, RelZ, SourceBlockType))
-		{
-			continue;
-		}
+	ChunkData.push_back(cCoordWithBlock(RelX, a_BlockY, RelZ, Block));
+}
 
-		if ((SourceBlockType != E_BLOCK_REDSTONE_REPEATER_ON) && (SourceBlockType != E_BLOCK_REDSTONE_REPEATER_OFF))
-		{
-			itr = m_RepeatersDelayList.erase(itr);
-			continue;
-		}
 
-		++itr;
-	}
 
-	for (cRedstoneSimulatorChunkData::iterator dataitr = ChunkData.begin(), end = ChunkData.end(); dataitr != end;)
+
+
+void cRedstoneSimulator::SimulateChunk(float a_Dt, int a_ChunkX, int a_ChunkZ, cChunk * a_Chunk)
+{
+	// We still attempt to simulate all blocks in the chunk every tick, because of outside influence that needs to be taken into account
+	// For example, repeaters need to be ticked, pressure plates checked for entities, daylight sensor checked for light changes, etc.
+	// The easiest way to make this more efficient is probably just to reduce code within the handlers that put too much strain on server, like getting or setting blocks
+	// A marking dirty system might be a TODO for later on, perhaps
+
+	cRedstoneSimulatorChunkData & ChunkData = a_Chunk->GetRedstoneSimulatorData();
+	if (ChunkData.empty())
 	{
-		BLOCKTYPE BlockType = a_Chunk->GetBlock(dataitr->x, dataitr->y, dataitr->z);
-		if (!IsAllowedBlock(BlockType))
-		{
-			dataitr = ChunkData.erase(dataitr);
-			continue;
-		}
+		return;
+	}
+
+	int BaseX = a_Chunk->GetPosX() * cChunkDef::Width;
+	int BaseZ = a_Chunk->GetPosZ() * cChunkDef::Width;
 
-		// PoweredBlock and LinkedPoweredBlock list was fine, now to the actual handling
+	for (cRedstoneSimulatorChunkData::const_iterator dataitr = ChunkData.begin(); dataitr != ChunkData.end(); ++dataitr)
+	{
 		int a_X = BaseX + dataitr->x;
 		int a_Z = BaseZ + dataitr->z;
-		switch (BlockType)
+		switch (dataitr->Data)
 		{
 			case E_BLOCK_BLOCK_OF_REDSTONE:     HandleRedstoneBlock(a_X, dataitr->y, a_Z);	break;
 			case E_BLOCK_LEVER:                 HandleRedstoneLever(a_X, dataitr->y, a_Z);	break;
@@ -262,19 +224,19 @@ void cRedstoneSimulator::SimulateChunk(float a_Dt, int a_ChunkX, int a_ChunkZ, c
 			case E_BLOCK_REDSTONE_TORCH_OFF:
 			case E_BLOCK_REDSTONE_TORCH_ON:
 			{
-				HandleRedstoneTorch(a_X, dataitr->y, a_Z, BlockType);
+				HandleRedstoneTorch(a_X, dataitr->y, a_Z, dataitr->Data);
 				break;
 			}
 			case E_BLOCK_STONE_BUTTON:
 			case E_BLOCK_WOODEN_BUTTON:
 			{
-				HandleRedstoneButton(a_X, dataitr->y, a_Z, BlockType);
+				HandleRedstoneButton(a_X, dataitr->y, a_Z, dataitr->Data);
 				break;
 			}
 			case E_BLOCK_REDSTONE_REPEATER_OFF:
 			case E_BLOCK_REDSTONE_REPEATER_ON:
 			{
-				HandleRedstoneRepeater(a_X, dataitr->y, a_Z, BlockType);
+				HandleRedstoneRepeater(a_X, dataitr->y, a_Z, dataitr->Data);
 				break;
 			}
 			case E_BLOCK_PISTON:
@@ -286,7 +248,7 @@ void cRedstoneSimulator::SimulateChunk(float a_Dt, int a_ChunkX, int a_ChunkZ, c
 			case E_BLOCK_REDSTONE_LAMP_OFF:
 			case E_BLOCK_REDSTONE_LAMP_ON:
 			{
-				HandleRedstoneLamp(a_X, dataitr->y, a_Z, BlockType);
+				HandleRedstoneLamp(a_X, dataitr->y, a_Z, dataitr->Data);
 				break;
 			}
 			case E_BLOCK_DISPENSER:
@@ -305,18 +267,16 @@ void cRedstoneSimulator::SimulateChunk(float a_Dt, int a_ChunkX, int a_ChunkZ, c
 			case E_BLOCK_DETECTOR_RAIL:
 			case E_BLOCK_POWERED_RAIL:
 			{
-				HandleRail(a_X, dataitr->y, a_Z, BlockType);
+				HandleRail(a_X, dataitr->y, a_Z, dataitr->Data);
 				break;
 			}
 			case E_BLOCK_WOODEN_PRESSURE_PLATE:
 			case E_BLOCK_STONE_PRESSURE_PLATE:
 			{
-				HandlePressurePlate(a_X, dataitr->y, a_Z, BlockType);
+				HandlePressurePlate(a_X, dataitr->y, a_Z, dataitr->Data);
 				break;
 			}
 		}
-
-		++dataitr;
 	}
 }
 
@@ -487,7 +447,7 @@ void cRedstoneSimulator::HandleRedstoneWire(int a_BlockX, int a_BlockY, int a_Bl
 	};
 
 	// Check to see if directly beside a power source
-	if (AreCoordsPowered(a_BlockX, a_BlockY, a_BlockZ))
+	if (IsWirePowered(a_BlockX, a_BlockY, a_BlockZ))
 	{
 		m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, 15); // Maximum power
 	}
@@ -546,6 +506,7 @@ void cRedstoneSimulator::HandleRedstoneWire(int a_BlockX, int a_BlockY, int a_Bl
 			// However, self not directly powered anymore, so source must have been removed,
 			// therefore, self must be set to meta zero
 			m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, 0);
+			m_World.WakeUpSimulators(a_BlockX, a_BlockY, a_BlockZ);
 			return; // No need to process block power sets because self not powered
 		}
 		else
@@ -693,7 +654,7 @@ void cRedstoneSimulator::HandleRedstoneRepeater(int a_BlockX, int a_BlockY, int
 			// Apparently, incrementing ticks only works reliably here, and not in SimChunk;
 			// With a world with lots of redstone, the repeaters simply do not delay
 			// I am confounded to say why. Perhaps optimisation failure.
-			LOGD("Incremented a repeater @ %i %i %i | Elapsed ticks: %i | Target delay: %i", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z, itr->a_ElapsedTicks, itr->a_DelayTicks);
+			LOGD("Incremented a repeater @ {%i %i %i} | Elapsed ticks: %i | Target delay: %i", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z, itr->a_ElapsedTicks, itr->a_DelayTicks);
 			itr->a_ElapsedTicks++;
 		}
 	}
@@ -781,48 +742,20 @@ void cRedstoneSimulator::HandleTNT(int a_BlockX, int a_BlockY, int a_BlockZ)
 
 void cRedstoneSimulator::HandleDoor(int a_BlockX, int a_BlockY, int a_BlockZ)
 {
-	if ((m_World.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ) & 0x08) == 0x08)
+	if (AreCoordsPowered(a_BlockX, a_BlockY, a_BlockZ))
 	{
-		// Block position is located at top half of door
-		// Is Y - 1 both within world boundaries, a door block, and the bottom half of a door?
-		// The bottom half stores the open/closed information
-		if (
-			(a_BlockY - 1 >= 0) &&
-			((m_World.GetBlock(a_BlockX, a_BlockY, a_BlockZ) == E_BLOCK_WOODEN_DOOR) || (m_World.GetBlock(a_BlockX, a_BlockY, a_BlockZ) == E_BLOCK_IRON_DOOR)) &&
-			(m_World.GetBlockMeta(a_BlockX, a_BlockY - 1, a_BlockZ & 0x08) == 0)
-			)
+		if (!AreCoordsSimulated(a_BlockX, a_BlockY, a_BlockZ, true))
 		{
-			if ((m_World.GetBlockMeta(a_BlockX, a_BlockY - 1, a_BlockZ) & 0x04) == 0) // Closed door?
-			{
-				if (AreCoordsPowered(a_BlockX, a_BlockY, a_BlockZ)) // Powered? If so, toggle open
-				{
-					cBlockDoorHandler::ChangeDoor(&m_World, a_BlockX, a_BlockY, a_BlockZ);
-				}
-			}
-			else // Opened door
-			{
-				if (!AreCoordsPowered(a_BlockX, a_BlockY, a_BlockZ)) // Unpowered? Close if so
-				{
-					cBlockDoorHandler::ChangeDoor(&m_World, a_BlockX, a_BlockY, a_BlockZ);
-				}
-			}
+			cBlockDoorHandler::ChangeDoor(&m_World, a_BlockX, a_BlockY, a_BlockZ);
+			SetPlayerToggleableBlockAsSimulated(a_BlockX, a_BlockY, a_BlockZ, true);
 		}
 	}
 	else
 	{
-		if ((m_World.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ) & 0x04) == 0) // Closed door?
-		{
-			if (AreCoordsPowered(a_BlockX, a_BlockY, a_BlockZ)) // Powered? If so, toggle open
-			{
-				cBlockDoorHandler::ChangeDoor(&m_World, a_BlockX, a_BlockY, a_BlockZ);
-			}
-		}
-		else // Opened door
+		if (!AreCoordsSimulated(a_BlockX, a_BlockY, a_BlockZ, false))
 		{
-			if (!AreCoordsPowered(a_BlockX, a_BlockY, a_BlockZ)) // Unpowered? Close if so
-			{
-				cBlockDoorHandler::ChangeDoor(&m_World, a_BlockX, a_BlockY, a_BlockZ);
-			}
+			cBlockDoorHandler::ChangeDoor(&m_World, a_BlockX, a_BlockY, a_BlockZ);
+			SetPlayerToggleableBlockAsSimulated(a_BlockX, a_BlockY, a_BlockZ, false);
 		}
 	}
 }
@@ -1188,6 +1121,33 @@ bool cRedstoneSimulator::IsPistonPowered(int a_BlockX, int a_BlockY, int a_Block
 
 
 
+bool cRedstoneSimulator::IsWirePowered(int a_BlockX, int a_BlockY, int a_BlockZ)
+{
+	for (PoweredBlocksList::const_iterator itr = m_PoweredBlocks.begin(); itr != m_PoweredBlocks.end(); ++itr)
+	{
+		if (!itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ))) { continue; }
+
+		if (m_World.GetBlock(itr->a_SourcePos) != E_BLOCK_REDSTONE_WIRE)
+		{
+			return true;
+		}
+	}
+
+	for (LinkedBlocksList::const_iterator itr = m_LinkedPoweredBlocks.begin(); itr != m_LinkedPoweredBlocks.end(); ++itr)
+	{
+		if (!itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ))) { continue; }
+
+		if (m_World.GetBlock(itr->a_SourcePos) != E_BLOCK_REDSTONE_WIRE)
+		{
+			return true;
+		}
+	}
+	return false; // Source was in front of the piston's front face
+}
+
+
+
+
 
 bool cRedstoneSimulator::AreCoordsSimulated(int a_BlockX, int a_BlockY, int a_BlockZ, bool IsCurrentStatePowered)
 {
@@ -1333,11 +1293,6 @@ void cRedstoneSimulator::SetBlockPowered(int a_BlockX, int a_BlockY, int a_Block
 		// Don't set air, fixes some bugs (wires powering themselves)
 		return;
 	}
-	if ((Block == E_BLOCK_REDSTONE_WIRE) && (a_SourceBlock == E_BLOCK_REDSTONE_WIRE))
-	{
-		// Wires cannot power themselves normally, instead, the wire handler will manually set meta
-		return;
-	}
 
 	for (PoweredBlocksList::const_iterator itr = m_PoweredBlocks.begin(); itr != m_PoweredBlocks.end(); ++itr) // Check powered list
 	{
@@ -1354,7 +1309,6 @@ void cRedstoneSimulator::SetBlockPowered(int a_BlockX, int a_BlockY, int a_Block
 	sPoweredBlocks RC;
 	RC.a_BlockPos = Vector3i(a_BlockX, a_BlockY, a_BlockZ);
 	RC.a_SourcePos = Vector3i(a_SourceX, a_SourceY, a_SourceZ);
-	RC.a_SourceBlock = a_SourceBlock;
 	m_PoweredBlocks.push_back(RC);
 }
 
@@ -1379,11 +1333,6 @@ void cRedstoneSimulator::SetBlockLinkedPowered(
 	{
 		return;
 	}
-	if ((a_SourceBlock == E_BLOCK_REDSTONE_WIRE) && (DestBlock == E_BLOCK_REDSTONE_WIRE))
-	{
-		// Wires cannot power another wire through a block
-		return;
-	}
 
 	for (LinkedBlocksList::const_iterator itr = m_LinkedPoweredBlocks.begin(); itr != m_LinkedPoweredBlocks.end(); ++itr) // Check linked powered list
 	{
@@ -1402,8 +1351,6 @@ void cRedstoneSimulator::SetBlockLinkedPowered(
 	RC.a_BlockPos = Vector3i(a_BlockX, a_BlockY, a_BlockZ);
 	RC.a_MiddlePos = Vector3i(a_MiddleX, a_MiddleY, a_MiddleZ);
 	RC.a_SourcePos = Vector3i(a_SourceX, a_SourceY, a_SourceZ);
-	RC.a_SourceBlock = a_SourceBlock;
-	RC.a_MiddleBlock = a_MiddleBlock;
 	m_LinkedPoweredBlocks.push_back(RC);
 }
 
diff --git a/src/Simulator/RedstoneSimulator.h b/src/Simulator/RedstoneSimulator.h
index 1080c3f81..63a5be3d3 100644
--- a/src/Simulator/RedstoneSimulator.h
+++ b/src/Simulator/RedstoneSimulator.h
@@ -4,7 +4,7 @@
 #include "Simulator.h"
 
 /// Per-chunk data for the simulator, specified individual chunks to simulate; 'Data' is not used
-typedef cCoordWithIntList cRedstoneSimulatorChunkData;
+typedef cCoordWithBlockVector cRedstoneSimulatorChunkData;
 
 
 
@@ -39,7 +39,6 @@ private:
 	{
 		Vector3i a_BlockPos; // Position of powered block
 		Vector3i a_SourcePos; // Position of source powering the block at a_BlockPos
-		BLOCKTYPE a_SourceBlock; // The source block type (for pistons pushing away sources and replacing with non source etc.)
 	};
 
 	struct sLinkedPoweredBlocks // Define structure of the indirectly powered blocks list (i.e. repeaters powering through a block to the block at the other side)
@@ -47,8 +46,6 @@ private:
 		Vector3i a_BlockPos;
 		Vector3i a_MiddlePos;
 		Vector3i a_SourcePos;
-		BLOCKTYPE a_SourceBlock;
-		BLOCKTYPE a_MiddleBlock;
 	};
 
 	struct sSimulatedPlayerToggleableList
@@ -81,102 +78,89 @@ private:
 	// In addition to being non-performant, it would stop the player from actually breaking said device
 
 	/* ====== SOURCES ====== */
-	/// <summary>Handles the redstone torch</summary>
+	/** Handles the redstone torch */
 	void HandleRedstoneTorch(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_MyState);
-	/// <summary>Handles the redstone block</summary>
+	/** Handles the redstone block */
 	void HandleRedstoneBlock(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Handles levers</summary>
+	/** Handles levers */
 	void HandleRedstoneLever(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Handles buttons</summary>
+	/** Handles buttons */
 	void HandleRedstoneButton(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType);
-	/// <summary>Handles daylight sensors</summary>
+	/** Handles daylight sensors */
 	void HandleDaylightSensor(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Handles pressure plates</summary>
+	/** Handles pressure plates */
 	void HandlePressurePlate(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_MyType);
 	/* ==================== */
 
 	/* ====== CARRIERS ====== */
-	/// <summary>Handles redstone wire</summary>
+	/** Handles redstone wire */
 	void HandleRedstoneWire(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Handles repeaters</summary>
+	/** Handles repeaters */
 	void HandleRedstoneRepeater(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_MyState);
 	/* ====================== */
 
 	/* ====== DEVICES ====== */
-	/// <summary>Handles pistons</summary>
+	/** Handles pistons */
 	void HandlePiston(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Handles dispensers and droppers</summary>
+	/** Handles dispensers and droppers */
 	void HandleDropSpenser(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Handles TNT (exploding)</summary>
+	/** Handles TNT (exploding) */
 	void HandleTNT(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Handles redstone lamps</summary>
+	/** Handles redstone lamps */
 	void HandleRedstoneLamp(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_MyState);
-	/// <summary>Handles doords</summary>
+	/** Handles doords */
 	void HandleDoor(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Handles activator, detector, and powered rails</summary>
+	/** Handles activator, detector, and powered rails */
 	void HandleRail(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_MyType);
-	/// <summary>Handles trapdoors</summary>
+	/** Handles trapdoors */
 	void HandleTrapdoor(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Handles noteblocks</summary>
+	/** Handles noteblocks */
 	void HandleNoteBlock(int a_BlockX, int a_BlockY, int a_BlockZ);
 	/* ===================== */
 
 	/* ====== Helper functions ====== */
-	/// <summary>Marks a block as powered</summary>
+	/** Marks a block as powered */
 	void SetBlockPowered(int a_BlockX, int a_BlockY, int a_BlockZ, int a_SourceX, int a_SourceY, int a_SourceZ, BLOCKTYPE a_SourceBlock);
-	/// <summary>Marks a block as being powered through another block</summary>
+	/** Marks a block as being powered through another block */
 	void SetBlockLinkedPowered(int a_BlockX, int a_BlockY, int a_BlockZ, int a_MiddleX, int a_MiddleY, int a_MiddleZ, int a_SourceX, int a_SourceY, int a_SourceZ, BLOCKTYPE a_SourceBlock, BLOCKTYPE a_MiddeBlock);
-	/// <summary>Marks a block as simulated, who should not be simulated further unless their power state changes, to accomodate a player manually toggling the block without triggering the simulator toggling it back</summary>
+	/** Marks a block as simulated, who should not be simulated further unless their power state changes, to accomodate a player manually toggling the block without triggering the simulator toggling it back */
 	void SetPlayerToggleableBlockAsSimulated(int a_BlockX, int a_BlockY, int a_BlockZ, bool WasLastStatePowered);
-	/// <summary>Marks the second block in a direction as linked powered</summary>
+	/** Marks the second block in a direction as linked powered */
 	void SetDirectionLinkedPowered(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Direction, BLOCKTYPE a_SourceBlock);
-	/// <summary>Marks all blocks immediately surrounding a coordinate as powered</summary>
+	/** Marks all blocks immediately surrounding a coordinate as powered */
 	void SetAllDirsAsPowered(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_SourceBlock);
-	/// <summary>Queues a repeater to be powered or unpowered</summary>
+	/** Queues a repeater to be powered or unpowered */
 	void QueueRepeaterPowerChange(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_Meta, short a_ElapsedTicks, bool ShouldPowerOn);
 
-	/// <summary>Returns if a coordinate is powered or linked powered</summary>
+	/** Returns if a coordinate is powered or linked powered */
 	bool AreCoordsPowered(int a_BlockX, int a_BlockY, int a_BlockZ) { return AreCoordsDirectlyPowered(a_BlockX, a_BlockY, a_BlockZ) || AreCoordsLinkedPowered(a_BlockX, a_BlockY, a_BlockZ); }
-	/// <summary>Returns if a coordinate is in the directly powered blocks list</summary>
+	/** Returns if a coordinate is in the directly powered blocks list */
 	bool AreCoordsDirectlyPowered(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Returns if a coordinate is in the indirectly powered blocks list</summary>
+	/** Returns if a coordinate is in the indirectly powered blocks list */
 	bool AreCoordsLinkedPowered(int a_BlockX, int a_BlockY, int a_BlockZ);
-	/// <summary>Returns if a coordinate was marked as simulated (for blocks toggleable by players)</summary>
+	/** Returns if a coordinate was marked as simulated (for blocks toggleable by players) */
 	bool AreCoordsSimulated(int a_BlockX, int a_BlockY, int a_BlockZ, bool IsCurrentStatePowered);
-	/// <summary>Returns if a repeater is powered</summary>
+	/** Returns if a repeater is powered */
 	bool IsRepeaterPowered(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_Meta);
-	/// <summary>Returns if a piston is powered</summary>
+	/** Returns if a piston is powered */
 	bool IsPistonPowered(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_Meta);
+	/** Returns if a wire is powered
+		The only diffence between this and a normal AreCoordsPowered is that this function checks for a wire powering another wire
+	*/
+	bool IsWirePowered(int a_BlockX, int a_BlockY, int a_BlockZ);
 
-	/// <summary>Returns if lever metadata marks it as emitting power</summary>
+
+	/** Returns if lever metadata marks it as emitting power */
 	bool IsLeverOn(NIBBLETYPE a_BlockMeta);
-	/// <summary>Returns if button metadata marks it as emitting power</summary>
+	/** Returns if button metadata marks it as emitting power */
 	bool IsButtonOn(NIBBLETYPE a_BlockMeta);
 	/* ============================== */
 
 	/* ====== Misc Functions ====== */
-	/// <summary>Returns if a block is viable to be the MiddleBlock of a SetLinkedPowered operation</summary>
-	inline static bool IsViableMiddleBlock(BLOCKTYPE Block)
-	{
-		if (!g_BlockIsSolid[Block]) { return false; }
+	/** Returns if a block is viable to be the MiddleBlock of a SetLinkedPowered operation */
+	inline static bool IsViableMiddleBlock(BLOCKTYPE Block) { return g_BlockFullyOccupiesVoxel[Block]; }
 
-		switch (Block)
-		{
-			// Add SOLID but not viable middle blocks here
-			case E_BLOCK_PISTON:
-			case E_BLOCK_PISTON_EXTENSION:
-			case E_BLOCK_STICKY_PISTON:
-			case E_BLOCK_REDSTONE_REPEATER_ON:
-			case E_BLOCK_REDSTONE_REPEATER_OFF:
-			case E_BLOCK_DAYLIGHT_SENSOR:
-			{
-				return false;
-			}
-			default: return true;
-		}
-	}
-
-	/// <summary>Returns if a block is a mechanism (something that accepts power and does something)</summary>
+	/** Returns if a block is a mechanism (something that accepts power and does something) */
 	inline static bool IsMechanism(BLOCKTYPE Block)
 	{
 		switch (Block)
@@ -205,16 +189,16 @@ private:
 		}
 	}
 
-	/// <summary>Returns if a block has the potential to output power</summary>
+	/** Returns if a block has the potential to output power */
 	inline static bool IsPotentialSource(BLOCKTYPE Block)
 	{
 		switch (Block)
 		{
+			case E_BLOCK_DETECTOR_RAIL:
 			case E_BLOCK_DAYLIGHT_SENSOR:
 			case E_BLOCK_WOODEN_BUTTON:
 			case E_BLOCK_STONE_BUTTON:
 			case E_BLOCK_REDSTONE_WIRE:
-			case E_BLOCK_REDSTONE_TORCH_OFF:
 			case E_BLOCK_REDSTONE_TORCH_ON:
 			case E_BLOCK_LEVER:
 			case E_BLOCK_REDSTONE_REPEATER_ON:
@@ -227,7 +211,7 @@ private:
 		}
 	}
 
-	/// <summary>Returns if a block is any sort of redstone device</summary>
+	/** Returns if a block is any sort of redstone device */
 	inline static bool IsRedstone(BLOCKTYPE Block)
 	{
 		switch (Block)
@@ -248,6 +232,7 @@ private:
 			case E_BLOCK_LEVER:
 			case E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE:
 			case E_BLOCK_NOTE_BLOCK:
+			case E_BLOCK_POWERED_RAIL:
 			case E_BLOCK_REDSTONE_LAMP_OFF:
 			case E_BLOCK_REDSTONE_LAMP_ON:
 			case E_BLOCK_REDSTONE_REPEATER_OFF: