26 files changed, 387 insertions, 218 deletions

diff --git a/src/BlockEntities/BlockEntity.cpp b/src/BlockEntities/BlockEntity.cpp
index 430f04551..05ad03a3d 100644
--- a/src/BlockEntities/BlockEntity.cpp
+++ b/src/BlockEntities/BlockEntity.cpp
@@ -28,24 +28,26 @@ cBlockEntity * cBlockEntity::CreateByBlockType(BLOCKTYPE a_BlockType, NIBBLETYPE
 	switch (a_BlockType)
 	{
 		case E_BLOCK_BEACON:        return new cBeaconEntity      (a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_CHEST:         return new cChestEntity       (a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_CHEST:         return new cChestEntity       (a_BlockX, a_BlockY, a_BlockZ, a_World, a_BlockType);
 		case E_BLOCK_COMMAND_BLOCK: return new cCommandBlockEntity(a_BlockX, a_BlockY, a_BlockZ, a_World);
 		case E_BLOCK_DISPENSER:     return new cDispenserEntity   (a_BlockX, a_BlockY, a_BlockZ, a_World);
 		case E_BLOCK_DROPPER:       return new cDropperEntity     (a_BlockX, a_BlockY, a_BlockZ, a_World);
 		case E_BLOCK_ENDER_CHEST:   return new cEnderChestEntity  (a_BlockX, a_BlockY, a_BlockZ, a_World);
 		case E_BLOCK_FLOWER_POT:    return new cFlowerPotEntity   (a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_HEAD:          return new cMobHeadEntity     (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_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_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);
+		case E_BLOCK_TRAPPED_CHEST: return new cChestEntity       (a_BlockX, a_BlockY, a_BlockZ, a_World, a_BlockType);
 		case E_BLOCK_WALLSIGN:      return new cSignEntity        (a_BlockType, a_BlockX, a_BlockY, a_BlockZ, a_World);
 		case E_BLOCK_NOTE_BLOCK:    return new cNoteEntity        (a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_JUKEBOX:       return new cJukeboxEntity     (a_BlockX, a_BlockY, a_BlockZ, a_World);
 	}
 	LOGD("%s: Requesting creation of an unknown block entity - block type %d (%s)",
 		__FUNCTION__, a_BlockType, ItemTypeToString(a_BlockType).c_str()
 	);
+	ASSERT(!"Requesting creation of an unknown block entity");
 	return NULL;
 }
 
diff --git a/src/BlockEntities/ChestEntity.cpp b/src/BlockEntities/ChestEntity.cpp
index cb9cc89bf..ca164464c 100644
--- a/src/BlockEntities/ChestEntity.cpp
+++ b/src/BlockEntities/ChestEntity.cpp
@@ -11,8 +11,9 @@
 
 
 
-cChestEntity::cChestEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World) :
-	super(E_BLOCK_CHEST, a_BlockX, a_BlockY, a_BlockZ, ContentsWidth, ContentsHeight, a_World)
+cChestEntity::cChestEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World, BLOCKTYPE a_Type) :
+	super(a_Type, a_BlockX, a_BlockY, a_BlockZ, ContentsWidth, ContentsHeight, a_World),
+	m_NumActivePlayers(0)
 {
 	cBlockEntityWindowOwner::SetBlockEntity(this);
 }
@@ -113,7 +114,7 @@ void cChestEntity::UsedBy(cPlayer * a_Player)
 	// The few false positives aren't much to worry about
 	int ChunkX, ChunkZ;
 	cChunkDef::BlockToChunk(m_PosX, m_PosZ, ChunkX, ChunkZ);
-	m_World->MarkChunkDirty(ChunkX, ChunkZ);
+	m_World->MarkChunkDirty(ChunkX, ChunkZ, true);
 }
 
 
diff --git a/src/BlockEntities/ChestEntity.h b/src/BlockEntities/ChestEntity.h
index ce16f84d7..310618504 100644
--- a/src/BlockEntities/ChestEntity.h
+++ b/src/BlockEntities/ChestEntity.h
@@ -34,8 +34,8 @@ public:
 	
 	// tolua_end
 	
-	/// Constructor used for normal operation
-	cChestEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
+	/** Constructor used for normal operation */
+	cChestEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World, BLOCKTYPE a_Type);
 	
 	virtual ~cChestEntity();
 
@@ -48,8 +48,20 @@ public:
 	virtual void SendTo(cClientHandle & a_Client) override;
 	virtual void UsedBy(cPlayer * a_Player) override;
 	
-	/// Opens a new chest window for this chest. Scans for neighbors to open a double chest window, if appropriate.
+	/** Opens a new chest window for this chest.
+	Scans for neighbors to open a double chest window, if appropriate. */
 	void OpenNewWindow(void);
+
+	/** Gets the number of players who currently have this chest open */
+	int GetNumberOfPlayers(void) const { return m_NumActivePlayers; }
+
+	/** Sets the number of players who currently have this chest open */
+	void SetNumberOfPlayers(int a_NumActivePlayers) { m_NumActivePlayers = a_NumActivePlayers; }
+
+private:
+
+	/** Number of players who currently have this chest open */
+	int m_NumActivePlayers;
 } ;  // tolua_export
 
 
diff --git a/src/BlockEntities/HopperEntity.cpp b/src/BlockEntities/HopperEntity.cpp
index 5856f20d1..aaf82d150 100644
--- a/src/BlockEntities/HopperEntity.cpp
+++ b/src/BlockEntities/HopperEntity.cpp
@@ -157,6 +157,7 @@ bool cHopperEntity::MoveItemsIn(cChunk & a_Chunk, Int64 a_CurrentTick)
 	bool res = false;
 	switch (a_Chunk.GetBlock(m_RelX, m_PosY + 1, m_RelZ))
 	{
+		case E_BLOCK_TRAPPED_CHEST:
 		case E_BLOCK_CHEST:
 		{
 			// Chests have special handling because of double-chests
@@ -322,6 +323,7 @@ bool cHopperEntity::MoveItemsOut(cChunk & a_Chunk, Int64 a_CurrentTick)
 	bool res = false;
 	switch (DestChunk->GetBlock(OutRelX, OutY, OutRelZ))
 	{
+		case E_BLOCK_TRAPPED_CHEST:
 		case E_BLOCK_CHEST:
 		{
 			// Chests have special handling because of double-chests
@@ -378,7 +380,7 @@ bool cHopperEntity::MoveItemsFromChest(cChunk & a_Chunk)
 		return true;
 	}
 	
-	// Check if the chest is a double-chest, if so, try to move from there:
+	// Check if the chest is a double-chest (chest directly above was empty), if so, try to move from there:
 	static const struct
 	{
 		int x, z;
@@ -395,13 +397,18 @@ bool cHopperEntity::MoveItemsFromChest(cChunk & a_Chunk)
 		int x = m_RelX + Coords[i].x;
 		int z = m_RelZ + Coords[i].z;
 		cChunk * Neighbor = a_Chunk.GetRelNeighborChunkAdjustCoords(x, z);
-		if (
-			(Neighbor == NULL) ||
-			(Neighbor->GetBlock(x, m_PosY + 1, z) != E_BLOCK_CHEST)
-		)
+		if (Neighbor == NULL)
 		{
 			continue;
 		}
+
+		BLOCKTYPE Block = Neighbor->GetBlock(x, m_PosY + 1, z);
+		if (Block != Chest->GetBlockType())
+		{
+			// Not the same kind of chest
+			continue;
+		}
+
 		Chest = (cChestEntity *)Neighbor->GetBlockEntity(m_PosX + Coords[i].x, m_PosY + 1, m_PosZ + Coords[i].z);
 		if (Chest == NULL)
 		{
@@ -550,10 +557,11 @@ bool cHopperEntity::MoveItemsToChest(cChunk & a_Chunk, int a_BlockX, int a_Block
 	}
 	if (MoveItemsToGrid(*Chest))
 	{
+		// Chest block directly connected was not full
 		return true;
 	}
 
-	// Check if the chest is a double-chest, if so, try to move into the other half:
+	// Check if the chest is a double-chest (chest block directly connected was full), if so, try to move into the other half:
 	static const struct
 	{
 		int x, z;
@@ -572,13 +580,18 @@ bool cHopperEntity::MoveItemsToChest(cChunk & a_Chunk, int a_BlockX, int a_Block
 		int x = RelX + Coords[i].x;
 		int z = RelZ + Coords[i].z;
 		cChunk * Neighbor = a_Chunk.GetRelNeighborChunkAdjustCoords(x, z);
-		if (
-			(Neighbor == NULL) ||
-			(Neighbor->GetBlock(x, a_BlockY, z) != E_BLOCK_CHEST)
-		)
+		if (Neighbor == NULL)
 		{
 			continue;
 		}
+
+		BLOCKTYPE Block = Neighbor->GetBlock(x, a_BlockY, z);
+		if (Block != Chest->GetBlockType())
+		{
+			// Not the same kind of chest
+			continue;
+		}
+
 		Chest = (cChestEntity *)Neighbor->GetBlockEntity(a_BlockX + Coords[i].x, a_BlockY, a_BlockZ + Coords[i].z);
 		if (Chest == NULL)
 		{
diff --git a/src/BlockInfo.cpp b/src/BlockInfo.cpp
index 9a953e396..4fc1d602c 100644
--- a/src/BlockInfo.cpp
+++ b/src/BlockInfo.cpp
@@ -101,6 +101,7 @@ void cBlockInfo::Initialize(cBlockInfoArray & a_Info)
 	a_Info[E_BLOCK_NEW_LEAVES          ].m_SpreadLightFalloff = 1;
 	a_Info[E_BLOCK_SIGN_POST           ].m_SpreadLightFalloff = 1;
 	a_Info[E_BLOCK_TORCH               ].m_SpreadLightFalloff = 1;
+	a_Info[E_BLOCK_TRAPPED_CHEST       ].m_SpreadLightFalloff = 1;
 	a_Info[E_BLOCK_TRIPWIRE            ].m_SpreadLightFalloff = 1;
 	a_Info[E_BLOCK_TRIPWIRE_HOOK       ].m_SpreadLightFalloff = 1;
 	a_Info[E_BLOCK_VINES               ].m_SpreadLightFalloff = 1;
@@ -162,6 +163,7 @@ void cBlockInfo::Initialize(cBlockInfoArray & a_Info)
 	a_Info[E_BLOCK_STATIONARY_WATER    ].m_Transparent = true;
 	a_Info[E_BLOCK_STONE_BUTTON        ].m_Transparent = true;
 	a_Info[E_BLOCK_STONE_PRESSURE_PLATE].m_Transparent = true;
+	a_Info[E_BLOCK_TRAPPED_CHEST       ].m_Transparent = true;
 	a_Info[E_BLOCK_TRIPWIRE            ].m_Transparent = true;
 	a_Info[E_BLOCK_TRIPWIRE_HOOK       ].m_Transparent = true;
 	a_Info[E_BLOCK_TALL_GRASS          ].m_Transparent = true;
@@ -287,6 +289,7 @@ void cBlockInfo::Initialize(cBlockInfoArray & a_Info)
 	a_Info[E_BLOCK_TALL_GRASS          ].m_IsSnowable = false;
 	a_Info[E_BLOCK_TNT                 ].m_IsSnowable = false;
 	a_Info[E_BLOCK_TORCH               ].m_IsSnowable = false;
+	a_Info[E_BLOCK_TRAPPED_CHEST       ].m_IsSnowable = false;
 	a_Info[E_BLOCK_TRIPWIRE            ].m_IsSnowable = false;
 	a_Info[E_BLOCK_TRIPWIRE_HOOK       ].m_IsSnowable = false;
 	a_Info[E_BLOCK_VINES               ].m_IsSnowable = false;
diff --git a/src/Blocks/BlockChest.h b/src/Blocks/BlockChest.h
index c9a769c75..f899f4bcb 100644
--- a/src/Blocks/BlockChest.h
+++ b/src/Blocks/BlockChest.h
@@ -44,16 +44,16 @@ public:
 		}
 		double yaw = a_Player->GetYaw();
 		if (
-			(Area.GetRelBlockType(0, 0, 1) == E_BLOCK_CHEST) ||
-			(Area.GetRelBlockType(2, 0, 1) == E_BLOCK_CHEST)
+			(Area.GetRelBlockType(0, 0, 1) == m_BlockType) ||
+			(Area.GetRelBlockType(2, 0, 1) == m_BlockType)
 		)
 		{
 			a_BlockMeta = ((yaw >= -90) && (yaw < 90)) ? 2 : 3;
 			return true;
 		}
 		if (
-			(Area.GetRelBlockType(0, 0, 1) == E_BLOCK_CHEST) ||
-			(Area.GetRelBlockType(2, 0, 1) == E_BLOCK_CHEST)
+			(Area.GetRelBlockType(0, 0, 1) == m_BlockType) ||
+			(Area.GetRelBlockType(2, 0, 1) == m_BlockType)
 		)
 		{
 			// FIXME: This is unreachable, as the condition is the same as the above one
@@ -130,12 +130,12 @@ public:
 		}
 		
 		int NumChestNeighbors = 0;
-		if (Area.GetRelBlockType(1, 0, 2) == E_BLOCK_CHEST)
+		if (Area.GetRelBlockType(1, 0, 2) == m_BlockType)
 		{
 			if (
-				(Area.GetRelBlockType(0, 0, 2) == E_BLOCK_CHEST) ||
-				(Area.GetRelBlockType(1, 0, 1) == E_BLOCK_CHEST) ||
-				(Area.GetRelBlockType(1, 0, 3) == E_BLOCK_CHEST)
+				(Area.GetRelBlockType(0, 0, 2) == m_BlockType) ||
+				(Area.GetRelBlockType(1, 0, 1) == m_BlockType) ||
+				(Area.GetRelBlockType(1, 0, 3) == m_BlockType)
 			)
 			{
 				// Already a doublechest neighbor, disallow:
@@ -143,12 +143,12 @@ public:
 			}
 			NumChestNeighbors += 1;
 		}
-		if (Area.GetRelBlockType(3, 0, 2) == E_BLOCK_CHEST)
+		if (Area.GetRelBlockType(3, 0, 2) == m_BlockType)
 		{
 			if (
-				(Area.GetRelBlockType(4, 0, 2) == E_BLOCK_CHEST) ||
-				(Area.GetRelBlockType(3, 0, 1) == E_BLOCK_CHEST) ||
-				(Area.GetRelBlockType(3, 0, 3) == E_BLOCK_CHEST)
+				(Area.GetRelBlockType(4, 0, 2) == m_BlockType) ||
+				(Area.GetRelBlockType(3, 0, 1) == m_BlockType) ||
+				(Area.GetRelBlockType(3, 0, 3) == m_BlockType)
 			)
 			{
 				// Already a doublechest neighbor, disallow:
@@ -156,12 +156,12 @@ public:
 			}
 			NumChestNeighbors += 1;
 		}
-		if (Area.GetRelBlockType(2, 0, 1) == E_BLOCK_CHEST)
+		if (Area.GetRelBlockType(2, 0, 1) == m_BlockType)
 		{
 			if (
-				(Area.GetRelBlockType(2, 0, 0) == E_BLOCK_CHEST) ||
-				(Area.GetRelBlockType(1, 0, 1) == E_BLOCK_CHEST) ||
-				(Area.GetRelBlockType(3, 0, 1) == E_BLOCK_CHEST)
+				(Area.GetRelBlockType(2, 0, 0) == m_BlockType) ||
+				(Area.GetRelBlockType(1, 0, 1) == m_BlockType) ||
+				(Area.GetRelBlockType(3, 0, 1) == m_BlockType)
 			)
 			{
 				// Already a doublechest neighbor, disallow:
@@ -169,12 +169,12 @@ public:
 			}
 			NumChestNeighbors += 1;
 		}
-		if (Area.GetRelBlockType(2, 0, 3) == E_BLOCK_CHEST)
+		if (Area.GetRelBlockType(2, 0, 3) == m_BlockType)
 		{
 			if (
-				(Area.GetRelBlockType(2, 0, 4) == E_BLOCK_CHEST) ||
-				(Area.GetRelBlockType(1, 0, 3) == E_BLOCK_CHEST) ||
-				(Area.GetRelBlockType(3, 0, 3) == E_BLOCK_CHEST)
+				(Area.GetRelBlockType(2, 0, 4) == m_BlockType) ||
+				(Area.GetRelBlockType(1, 0, 3) == m_BlockType) ||
+				(Area.GetRelBlockType(3, 0, 3) == m_BlockType)
 			)
 			{
 				// Already a doublechest neighbor, disallow:
@@ -217,7 +217,7 @@ public:
 	/// If there's a chest in the a_Area in the specified coords, modifies its meta to a_NewMeta and returns true.
 	bool CheckAndAdjustNeighbor(cChunkInterface & a_ChunkInterface, const cBlockArea & a_Area, int a_RelX, int a_RelZ, NIBBLETYPE a_NewMeta)
 	{
-		if (a_Area.GetRelBlockType(a_RelX, 0, a_RelZ) != E_BLOCK_CHEST)
+		if (a_Area.GetRelBlockType(a_RelX, 0, a_RelZ) != m_BlockType)
 		{
 			return false;
 		}
@@ -228,7 +228,7 @@ public:
 
 	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
 	{
-		a_Pickups.push_back(cItem(E_BLOCK_CHEST, 1, 0));
+		a_Pickups.push_back(cItem(m_BlockType, 1, 0));
 	}
 } ;
 
diff --git a/src/Blocks/BlockHandler.cpp b/src/Blocks/BlockHandler.cpp
index 3ddb7531d..730774ab1 100644
--- a/src/Blocks/BlockHandler.cpp
+++ b/src/Blocks/BlockHandler.cpp
@@ -176,7 +176,7 @@ cBlockHandler * cBlockHandler::CreateBlockHandler(BLOCKTYPE a_BlockType)
 {
 	switch(a_BlockType)
 	{
-		// Block handlers, alphabetically sorted:
+		// Block handlers, alphabetically sorted:	
 		case E_BLOCK_ACACIA_WOOD_STAIRS:    return new cBlockStairsHandler          (a_BlockType);
 		case E_BLOCK_ACTIVATOR_RAIL:        return new cBlockRailHandler            (a_BlockType);
 		case E_BLOCK_ANVIL:                 return new cBlockAnvilHandler           (a_BlockType);
@@ -238,9 +238,9 @@ cBlockHandler * cBlockHandler::CreateBlockHandler(BLOCKTYPE a_BlockType)
 		case E_BLOCK_LAPIS_ORE:             return new cBlockOreHandler             (a_BlockType);
 		case E_BLOCK_LAVA:                  return new cBlockLavaHandler            (a_BlockType);
 		case E_BLOCK_LEAVES:                return new cBlockLeavesHandler          (a_BlockType);
+		case E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE: return new cBlockPressurePlateHandler(a_BlockType);
 		case E_BLOCK_LILY_PAD:              return new cBlockLilypadHandler         (a_BlockType);
 		case E_BLOCK_LIT_FURNACE:           return new cBlockFurnaceHandler         (a_BlockType);
-		case E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE: return new cBlockPressurePlateHandler(a_BlockType);
 		case E_BLOCK_LOG:                   return new cBlockSidewaysHandler        (a_BlockType);
 		case E_BLOCK_MELON:                 return new cBlockMelonHandler           (a_BlockType);
 		case E_BLOCK_MELON_STEM:            return new cBlockStemsHandler           (a_BlockType);
@@ -293,6 +293,7 @@ cBlockHandler * cBlockHandler::CreateBlockHandler(BLOCKTYPE a_BlockType)
 		case E_BLOCK_TORCH:                 return new cBlockTorchHandler           (a_BlockType);
 		case E_BLOCK_TRAPDOOR:              return new cBlockTrapdoorHandler        (a_BlockType);
 		case E_BLOCK_TNT:                   return new cBlockTNTHandler             (a_BlockType);
+		case E_BLOCK_TRAPPED_CHEST:         return new cBlockChestHandler           (a_BlockType);
 		case E_BLOCK_TRIPWIRE:              return new cBlockTripwireHandler        (a_BlockType);
 		case E_BLOCK_TRIPWIRE_HOOK:         return new cBlockTripwireHookHandler    (a_BlockType);
 		case E_BLOCK_VINES:                 return new cBlockVineHandler            (a_BlockType);
diff --git a/src/Blocks/BlockPiston.cpp b/src/Blocks/BlockPiston.cpp
index faf639312..6f8d8be3e 100644
--- a/src/Blocks/BlockPiston.cpp
+++ b/src/Blocks/BlockPiston.cpp
@@ -85,7 +85,7 @@ int cBlockPistonHandler::FirstPassthroughBlock(int a_PistonX, int a_PistonY, int
 		NIBBLETYPE currMeta;
 		AddPistonDir(a_PistonX, a_PistonY, a_PistonZ, pistonmeta, 1);
 		a_World->GetBlockTypeMeta(a_PistonX, a_PistonY, a_PistonZ, currBlock, currMeta);
-		if (CanBreakPush(currBlock))
+		if (cBlockInfo::IsPistonBreakable(currBlock))
 		{
 			// This block breaks when pushed, extend up to here
 			return ret;
diff --git a/src/Blocks/BlockPiston.h b/src/Blocks/BlockPiston.h
index e6fa48e54..27a44d829 100644
--- a/src/Blocks/BlockPiston.h
+++ b/src/Blocks/BlockPiston.h
@@ -104,6 +104,7 @@ private:
 			case E_BLOCK_ENCHANTMENT_TABLE:
 			case E_BLOCK_END_PORTAL:
 			case E_BLOCK_END_PORTAL_FRAME:
+			// Notice the lack of an E_BLOCK_ENDER_CHEST here; its because ender chests can totally be pushed/pulled in MCS :)
 			case E_BLOCK_FURNACE:
 			case E_BLOCK_LIT_FURNACE:
 			case E_BLOCK_HOPPER:
@@ -113,6 +114,7 @@ private:
 			case E_BLOCK_NOTE_BLOCK:
 			case E_BLOCK_OBSIDIAN:
 			case E_BLOCK_PISTON_EXTENSION:
+			case E_BLOCK_TRAPPED_CHEST:
 			{
 				return false;
 			}
@@ -126,24 +128,10 @@ private:
 		return true;
 	}
 
-	/// Returns true if the specified block can be pushed by a piston and broken / replaced
-	static inline bool CanBreakPush(BLOCKTYPE a_BlockType) { return cBlockInfo::IsPistonBreakable(a_BlockType); }
-
 	/// Returns true if the specified block can be pulled by a sticky piston
 	static inline bool CanPull(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
 	{
-		switch (a_BlockType)
-		{
-			case E_BLOCK_LAVA:
-			case E_BLOCK_STATIONARY_LAVA:
-			case E_BLOCK_STATIONARY_WATER:
-			case E_BLOCK_WATER:
-			{
-				return false;
-			}
-		}
-
-		if (CanBreakPush(a_BlockType))
+		if (cBlockInfo::IsPistonBreakable(a_BlockType))
 		{
 			return false; // CanBreakPush returns true, but we need false to prevent pulling
 		}
diff --git a/src/Chunk.cpp b/src/Chunk.cpp
index 1e80eb61b..c004a6408 100644
--- a/src/Chunk.cpp
+++ b/src/Chunk.cpp
@@ -1301,6 +1301,7 @@ void cChunk::CreateBlockEntities(void)
 				switch (BlockType)
 				{
 					case E_BLOCK_BEACON:
+					case E_BLOCK_TRAPPED_CHEST:
 					case E_BLOCK_CHEST:
 					case E_BLOCK_COMMAND_BLOCK:
 					case E_BLOCK_DISPENSER:
@@ -1431,6 +1432,7 @@ void cChunk::SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType,
 	switch (a_BlockType)
 	{
 		case E_BLOCK_BEACON:
+		case E_BLOCK_TRAPPED_CHEST:
 		case E_BLOCK_CHEST:
 		case E_BLOCK_COMMAND_BLOCK:
 		case E_BLOCK_DISPENSER:
@@ -2150,7 +2152,7 @@ bool cChunk::DoWithChestAt(int a_BlockX, int a_BlockY, int a_BlockZ, cChestCallb
 		{
 			continue;
 		}
-		if ((*itr)->GetBlockType() != E_BLOCK_CHEST)
+		if (((*itr)->GetBlockType() != E_BLOCK_CHEST) && ((*itr)->GetBlockType() != E_BLOCK_TRAPPED_CHEST)) // Trapped chests use normal chests' handlers
 		{
 			// There is a block entity here, but of different type. No other block entity can be here, so we can safely bail out
 			return false;
@@ -2530,8 +2532,8 @@ cChunk * cChunk::GetRelNeighborChunk(int a_RelX, int a_RelZ)
 	{
 		int BlockX = m_PosX * cChunkDef::Width + a_RelX;
 		int BlockZ = m_PosZ * cChunkDef::Width + a_RelZ;
-		int BlockY, ChunkX, ChunkZ;
-		AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
+		int ChunkX, ChunkZ;
+		BlockToChunk(BlockX, BlockZ, ChunkX, ChunkZ);
 		return m_ChunkMap->GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
 	}
 
diff --git a/src/ChunkMap.cpp b/src/ChunkMap.cpp
index 687c0824f..35d55d396 100644
--- a/src/ChunkMap.cpp
+++ b/src/ChunkMap.cpp
@@ -847,7 +847,22 @@ void cChunkMap::WakeUpSimulatorsInArea(int a_MinBlockX, int a_MaxBlockX, int a_M
 
 
 
-void cChunkMap::MarkChunkDirty (int a_ChunkX, int a_ChunkZ)
+void cChunkMap::MarkRedstoneDirty(int a_ChunkX, int a_ChunkZ)
+{
+	cCSLock Lock(m_CSLayers);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	if ((Chunk == NULL) || !Chunk->IsValid())
+	{
+		return;
+	}
+	Chunk->SetIsRedstoneDirty(true);
+}
+
+
+
+
+
+void cChunkMap::MarkChunkDirty(int a_ChunkX, int a_ChunkZ, bool a_MarkRedstoneDirty)
 {
 	cCSLock Lock(m_CSLayers);
 	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
@@ -856,6 +871,10 @@ void cChunkMap::MarkChunkDirty (int a_ChunkX, int a_ChunkZ)
 		return;
 	}
 	Chunk->MarkDirty();
+	if (a_MarkRedstoneDirty)
+	{
+		Chunk->SetIsRedstoneDirty(true);
+	}
 }
 
 
diff --git a/src/ChunkMap.h b/src/ChunkMap.h
index b8870dfca..4daa85ebd 100644
--- a/src/ChunkMap.h
+++ b/src/ChunkMap.h
@@ -106,7 +106,8 @@ public:
 	/** Wakes up the simulators for the specified area of blocks */
 	void WakeUpSimulatorsInArea(int a_MinBlockX, int a_MaxBlockX, int a_MinBlockY, int a_MaxBlockY, int a_MinBlockZ, int a_MaxBlockZ);
 
-	void MarkChunkDirty     (int a_ChunkX, int a_ChunkZ);
+	void MarkRedstoneDirty  (int a_ChunkX, int a_ChunkZ);
+	void MarkChunkDirty     (int a_ChunkX, int a_ChunkZ, bool a_MarkRedstoneDirty = false);
 	void MarkChunkSaving    (int a_ChunkX, int a_ChunkZ);
 	void MarkChunkSaved     (int a_ChunkX, int a_ChunkZ);
 	
diff --git a/src/Entities/ExpOrb.h b/src/Entities/ExpOrb.h
index e76274ac9..2cd4ef31f 100644
--- a/src/Entities/ExpOrb.h
+++ b/src/Entities/ExpOrb.h
@@ -11,7 +11,7 @@
 class cExpOrb :
 	public cEntity
 {
-	typedef cExpOrb super;
+	typedef cEntity super;
 	
 public:
 	// tolua_end
diff --git a/src/Map.cpp b/src/Map.cpp
index 7721baa70..8f205a606 100644
--- a/src/Map.cpp
+++ b/src/Map.cpp
@@ -200,8 +200,8 @@ bool cMap::UpdatePixel(unsigned int a_X, unsigned int a_Z)
 	int BlockX = m_CenterX + ((a_X - (m_Width  / 2)) * PixelWidth);
 	int BlockZ = m_CenterZ + ((a_Z - (m_Height / 2)) * PixelWidth);
 
-	int ChunkX, ChunkY, ChunkZ;
-	m_World->BlockToChunk(BlockX, 0, BlockZ, ChunkX, ChunkY, ChunkZ);
+	int ChunkX, ChunkZ;
+	cChunkDef::BlockToChunk(BlockX, BlockZ, ChunkX, ChunkZ);
 
 	int RelX = BlockX - (ChunkX * cChunkDef::Width);
 	int RelZ = BlockZ - (ChunkZ * cChunkDef::Width);
diff --git a/src/Protocol/Authenticator.cpp b/src/Protocol/Authenticator.cpp
index 2050393c2..54b823e0f 100644
--- a/src/Protocol/Authenticator.cpp
+++ b/src/Protocol/Authenticator.cpp
@@ -262,7 +262,7 @@ bool cAuthenticator::AuthWithYggdrasil(AString & a_UserName, const AString & a_S
 	AString HexDump;
 	if (Response.compare(0, prefix.size(), prefix))
 	{
-		LOGINFO("User \"%s\" failed to auth, bad http status line received", a_UserName.c_str());
+		LOGINFO("User %s failed to auth, bad http status line received", a_UserName.c_str());
 		LOG("Response: \n%s", CreateHexDump(HexDump, Response.data(), Response.size(), 16).c_str());
 		return false;
 	}
@@ -271,7 +271,7 @@ bool cAuthenticator::AuthWithYggdrasil(AString & a_UserName, const AString & a_S
 	size_t idxHeadersEnd = Response.find("\r\n\r\n");
 	if (idxHeadersEnd == AString::npos)
 	{
-		LOGINFO("User \"%s\" failed to authenticate, bad http response header received", a_UserName.c_str());
+		LOGINFO("User %s failed to authenticate, bad http response header received", a_UserName.c_str());
 		LOG("Response: \n%s", CreateHexDump(HexDump, Response.data(), Response.size(), 16).c_str());
 		return false;
 	}
diff --git a/src/Simulator/IncrementalRedstoneSimulator.cpp b/src/Simulator/IncrementalRedstoneSimulator.cpp
index 5af9a295d..3c037b6db 100644
--- a/src/Simulator/IncrementalRedstoneSimulator.cpp
+++ b/src/Simulator/IncrementalRedstoneSimulator.cpp
@@ -5,6 +5,7 @@
 #include "BoundingBox.h"
 #include "../BlockEntities/DropSpenserEntity.h"
 #include "../BlockEntities/NoteEntity.h"
+#include "../BlockEntities/ChestEntity.h"
 #include "../BlockEntities/CommandBlockEntity.h"
 #include "../Entities/TNTEntity.h"
 #include "../Entities/Pickup.h"
@@ -15,8 +16,6 @@
 #include "../Blocks/BlockPiston.h"
 #include "../Blocks/BlockTripwireHook.h"
 
-#define WAKE_SIMULATOR_IF_DIRTY(a_Chunk, a_BlockX, a_BlockY, a_BlockZ) if (a_Chunk->IsRedstoneDirty()) WakeUp(a_BlockX, a_BlockY, a_BlockZ, a_Chunk);
-
 
 
 
@@ -63,14 +62,16 @@ void cIncrementalRedstoneSimulator::RedstoneAddBlock(int a_BlockX, int a_BlockY,
 	int RelZ = 0;	
 	BLOCKTYPE Block;
 	NIBBLETYPE Meta;
-	cChunk * OtherChunk = a_Chunk;
 
 	if (a_OtherChunk != NULL)
 	{
 		RelX = a_BlockX - a_OtherChunk->GetPosX() * cChunkDef::Width;
 		RelZ = a_BlockZ - a_OtherChunk->GetPosZ() * cChunkDef::Width;
 		a_OtherChunk->GetBlockTypeMeta(RelX, a_BlockY, RelZ, Block, Meta);
-		OtherChunk = a_OtherChunk;
+
+		// If a_OtherChunk is passed (not NULL), it is the chunk that had a block change, and a_Chunk will be the neighbouring chunk of that block
+		// Because said neighbouring chunk does not know of this change but still needs to update its redstone, we set it to dirty
+		a_Chunk->SetIsRedstoneDirty(true);
 	}
 	else
 	{
@@ -95,8 +96,6 @@ void cIncrementalRedstoneSimulator::RedstoneAddBlock(int a_BlockX, int a_BlockY,
 		{
 			LOGD("cIncrementalRedstoneSimulator: 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);
 			itr = PoweredBlocks->erase(itr);
-			a_Chunk->SetIsRedstoneDirty(true);
-			OtherChunk->SetIsRedstoneDirty(true);
 			continue;
 		}
 		else if (
@@ -105,34 +104,13 @@ void cIncrementalRedstoneSimulator::RedstoneAddBlock(int a_BlockX, int a_BlockY,
 			((Block == E_BLOCK_LEVER) && !IsLeverOn(Meta)) ||
 			((Block == E_BLOCK_DETECTOR_RAIL) && ((Meta & 0x08) == 0)) ||
 			(((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)) ||
-			(((Block == E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE) || (Block == E_BLOCK_HEAVY_WEIGHTED_PRESSURE_PLATE)) && (Meta == 0)) ||
 			((Block == E_BLOCK_TRIPWIRE_HOOK) && ((Meta & 0x08) == 0))
 			)
 		{
 			LOGD("cIncrementalRedstoneSimulator: 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);
 			itr = PoweredBlocks->erase(itr);
-			a_Chunk->SetIsRedstoneDirty(true);
-			OtherChunk->SetIsRedstoneDirty(true);
 			continue;
 		}
-		else if (Block == E_BLOCK_DAYLIGHT_SENSOR)
-		{
-			if (!m_World.IsChunkLighted(OtherChunk->GetPosX(), OtherChunk->GetPosZ()))
-			{
-				m_World.QueueLightChunk(OtherChunk->GetPosX(), OtherChunk->GetPosZ());
-			}
-			else
-			{
-				if (OtherChunk->GetTimeAlteredLight(OtherChunk->GetSkyLight(RelX, a_BlockY + 1, RelZ)) <= 7)
-				{
-					itr = PoweredBlocks->erase(itr);
-					a_Chunk->SetIsRedstoneDirty(true);
-					OtherChunk->SetIsRedstoneDirty(true);
-					continue;
-				}
-			}
-		}
 		++itr;
 	}
 
@@ -146,23 +124,17 @@ void cIncrementalRedstoneSimulator::RedstoneAddBlock(int a_BlockX, int a_BlockY,
 			{
 				LOGD("cIncrementalRedstoneSimulator: 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);
 				itr = LinkedPoweredBlocks->erase(itr);
-				a_Chunk->SetIsRedstoneDirty(true);
-				OtherChunk->SetIsRedstoneDirty(true);
 				continue;
 			}
 			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))) ||
-				(((Block == E_BLOCK_STONE_PRESSURE_PLATE) || (Block == E_BLOCK_WOODEN_PRESSURE_PLATE)) && (Meta == 0)) ||
-				(((Block == E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE) || (Block == E_BLOCK_HEAVY_WEIGHTED_PRESSURE_PLATE)) && (Meta == 0))
+				(((Block == E_BLOCK_STONE_BUTTON) || (Block == E_BLOCK_WOODEN_BUTTON)) && (!IsButtonOn(Meta)))
 				)
 			{
 				LOGD("cIncrementalRedstoneSimulator: 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);
 				itr = LinkedPoweredBlocks->erase(itr);
-				a_Chunk->SetIsRedstoneDirty(true);
-				OtherChunk->SetIsRedstoneDirty(true);
 				continue;
 			}
 		}
@@ -172,8 +144,6 @@ void cIncrementalRedstoneSimulator::RedstoneAddBlock(int a_BlockX, int a_BlockY,
 			{
 				LOGD("cIncrementalRedstoneSimulator: 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);
 				itr = LinkedPoweredBlocks->erase(itr);
-				a_Chunk->SetIsRedstoneDirty(true);
-				OtherChunk->SetIsRedstoneDirty(true);
 				continue;
 			}
 		}
@@ -320,6 +290,7 @@ void cIncrementalRedstoneSimulator::SimulateChunk(float a_Dt, int a_ChunkX, int
 				case E_BLOCK_FENCE_GATE:            HandleFenceGate(dataitr->x, dataitr->y, dataitr->z);      break;
 				case E_BLOCK_TNT:                   HandleTNT(dataitr->x, dataitr->y, dataitr->z);            break;
 				case E_BLOCK_TRAPDOOR:              HandleTrapdoor(dataitr->x, dataitr->y, dataitr->z);       break;
+				case E_BLOCK_TRAPPED_CHEST:         HandleTrappedChest(dataitr->x, dataitr->y, dataitr->z);   break;
 
 				case E_BLOCK_ACTIVATOR_RAIL:
 				case E_BLOCK_DETECTOR_RAIL:
@@ -382,18 +353,13 @@ void cIncrementalRedstoneSimulator::SimulateChunk(float a_Dt, int a_ChunkX, int
 
 void cIncrementalRedstoneSimulator::WakeUp(int a_BlockX, int a_BlockY, int a_BlockZ, cChunk * a_Chunk)
 {
-	if (
-		((a_BlockX % cChunkDef::Width) <= 1) ||
-		((a_BlockX % cChunkDef::Width) >= 14) ||
-		((a_BlockZ % cChunkDef::Width) <= 1) ||
-		((a_BlockZ % cChunkDef::Width) >= 14)
-		) // Are we on a chunk boundary? +- 2 because of LinkedPowered blocks
+	if (AreCoordsOnChunkBoundary(a_BlockX, a_BlockY, a_BlockZ))
 	{
 		// On a chunk boundary, alert all four sides (i.e. at least one neighbouring chunk)
 		AddBlock(a_BlockX, a_BlockY, a_BlockZ, a_Chunk);
 
 		// Pass the original coordinates, because when adding things to our simulator lists, we get the chunk that they are in, and therefore any updates need to preseve their position
-		// RedstoneAddBlock to pass both the neighbouring chunk and the chunk which the coordiantes are in and +- 2 in GetNeighbour() to accomodate for LinkedPowered blocks being 2 away from chunk boundaries
+		// RedstoneAddBlock to pass both the neighbouring chunk and the chunk which the coordinates are in and +- 2 in GetNeighbour() to accomodate for LinkedPowered blocks being 2 away from chunk boundaries
 		RedstoneAddBlock(a_BlockX, a_BlockY, a_BlockZ, a_Chunk->GetNeighborChunk(a_BlockX - 2, a_BlockZ), a_Chunk);
 		RedstoneAddBlock(a_BlockX, a_BlockY, a_BlockZ, a_Chunk->GetNeighborChunk(a_BlockX + 2, a_BlockZ), a_Chunk);
 		RedstoneAddBlock(a_BlockX, a_BlockY, a_BlockZ, a_Chunk->GetNeighborChunk(a_BlockX, a_BlockZ - 2), a_Chunk);
@@ -448,7 +414,7 @@ void cIncrementalRedstoneSimulator::HandleRedstoneTorch(int a_RelBlockX, int a_R
 			if (i + 1 < ARRAYCOUNT(gCrossCoords)) // Sides of torch, not top (top is last)
 			{
 				if (
-					((IsMechanism(Type)) || (Type == E_BLOCK_REDSTONE_WIRE)) && // Is it a mechanism or wire? Not block/other torch etc.
+					IsMechanism(Type) && // Is it a mechanism? Not block/other torch etc.
 					(!Vector3i(a_RelBlockX + gCrossCoords[i].x, a_RelBlockY + gCrossCoords[i].y, a_RelBlockZ + gCrossCoords[i].z).Equals(Vector3i(X, Y, Z))) // CAN'T power block is that it is on
 					)
 				{
@@ -468,7 +434,7 @@ void cIncrementalRedstoneSimulator::HandleRedstoneTorch(int a_RelBlockX, int a_R
 		{
 			BLOCKTYPE Type = m_Chunk->GetBlock(a_RelBlockX, a_RelBlockY - 1, a_RelBlockZ);
 
-			if ((IsMechanism(Type)) || (Type == E_BLOCK_REDSTONE_WIRE)) // Still can't make a normal block powered though!
+			if (IsMechanism(Type)) // Still can't make a normal block powered though!
 			{
 				SetBlockPowered(a_RelBlockX, a_RelBlockY - 1, a_RelBlockZ, a_RelBlockX, a_RelBlockY, a_RelBlockZ);
 			}
@@ -780,17 +746,20 @@ void cIncrementalRedstoneSimulator::HandleRedstoneRepeaterDelays()
 {
 	for (RepeatersDelayList::iterator itr = m_RepeatersDelayList->begin(); itr != m_RepeatersDelayList->end();)
 	{
-
 		if (itr->a_ElapsedTicks >= itr->a_DelayTicks) // Has the elapsed ticks reached the target ticks?
 		{
 			int RelBlockX = itr->a_RelBlockPos.x;
 			int RelBlockY = itr->a_RelBlockPos.y;
 			int RelBlockZ = itr->a_RelBlockPos.z;
-			NIBBLETYPE Meta = m_Chunk->GetMeta(RelBlockX, RelBlockY, RelBlockZ);
+			BLOCKTYPE Block;
+			NIBBLETYPE Meta;
+			m_Chunk->GetBlockTypeMeta(RelBlockX, RelBlockY, RelBlockZ, Block, Meta);
 			if (itr->ShouldPowerOn)
 			{
-		
-				m_Chunk->SetBlock(itr->a_RelBlockPos, E_BLOCK_REDSTONE_REPEATER_ON, Meta); // For performance
+				if (Block != E_BLOCK_REDSTONE_REPEATER_ON) // For performance
+				{
+					m_Chunk->SetBlock(itr->a_RelBlockPos, E_BLOCK_REDSTONE_REPEATER_ON, Meta);
+				}
 
 				switch (Meta & 0x3) // We only want the direction (bottom) bits
 				{
@@ -820,17 +789,14 @@ void cIncrementalRedstoneSimulator::HandleRedstoneRepeaterDelays()
 					}
 				}
 			}
-			else
+			else if (Block != E_BLOCK_REDSTONE_REPEATER_OFF)
 			{
-				m_Chunk->SetBlock(RelBlockX, RelBlockY, RelBlockZ, E_BLOCK_REDSTONE_REPEATER_OFF, Meta);
+				m_Chunk->SetBlock(RelBlockX, RelBlockY, RelBlockZ, E_BLOCK_REDSTONE_REPEATER_OFF, Meta);				
 			}
 			itr = m_RepeatersDelayList->erase(itr);
 		}
 		else
 		{
-			// 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_RelBlockPos.x, itr->a_RelBlockPos.y, itr->a_RelBlockPos.z, itr->a_ElapsedTicks, itr->a_DelayTicks);
 			itr->a_ElapsedTicks++;
 			itr++;
@@ -1139,7 +1105,7 @@ void cIncrementalRedstoneSimulator::HandlePressurePlate(int a_RelBlockX, int a_R
 			else
 			{
 				m_Chunk->SetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ, 0x0);
-				WAKE_SIMULATOR_IF_DIRTY(m_Chunk, BlockX, a_RelBlockY, BlockZ);
+				SetSourceUnpowered(BlockX, a_RelBlockY, BlockZ, m_Chunk);
 			}
 			break;
 		}
@@ -1206,7 +1172,7 @@ void cIncrementalRedstoneSimulator::HandlePressurePlate(int a_RelBlockX, int a_R
 					m_Chunk->BroadcastSoundEffect("random.click", (int)((BlockX + 0.5) * 8.0), (int)((a_RelBlockY + 0.1) * 8.0), (int)((BlockZ + 0.5) * 8.0), 0.3F, 0.6F);
 				}
 				m_Chunk->SetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ, E_META_PRESSURE_PLATE_RAISED);
-				WAKE_SIMULATOR_IF_DIRTY(m_Chunk, BlockX, a_RelBlockY, BlockZ);
+				SetSourceUnpowered(BlockX, a_RelBlockY, BlockZ, m_Chunk);
 			}
 
 			break;
@@ -1274,7 +1240,7 @@ void cIncrementalRedstoneSimulator::HandlePressurePlate(int a_RelBlockX, int a_R
 					m_Chunk->BroadcastSoundEffect("random.click", (int)((BlockX + 0.5) * 8.0), (int)((a_RelBlockY + 0.1) * 8.0), (int)((BlockZ + 0.5) * 8.0), 0.3F, 0.6F);
 				}
 				m_Chunk->SetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ, E_META_PRESSURE_PLATE_RAISED);
-				WAKE_SIMULATOR_IF_DIRTY(m_Chunk, BlockX, a_RelBlockY, BlockZ);
+				SetSourceUnpowered(BlockX, a_RelBlockY, BlockZ, m_Chunk);
 			}
 
 			break;
@@ -1341,7 +1307,7 @@ void cIncrementalRedstoneSimulator::HandlePressurePlate(int a_RelBlockX, int a_R
 					m_Chunk->BroadcastSoundEffect("random.click", (int)((BlockX + 0.5) * 8.0), (int)((a_RelBlockY + 0.1) * 8.0), (int)((BlockZ + 0.5) * 8.0), 0.3F, 0.6F);
 				}
 				m_Chunk->SetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ, E_META_PRESSURE_PLATE_RAISED);
-				WAKE_SIMULATOR_IF_DIRTY(m_Chunk, BlockX, a_RelBlockY, BlockZ);
+				SetSourceUnpowered(BlockX, a_RelBlockY, BlockZ, m_Chunk);
 			}
 			break;
 		}
@@ -1384,14 +1350,14 @@ void cIncrementalRedstoneSimulator::HandleTripwireHook(int a_RelBlockX, int a_Re
 		{
 			if (ReverseBlockFace(cBlockTripwireHookHandler::MetadataToDirection(Meta)) == FaceToGoTowards)
 			{
-				// Other hook not facing in opposite direction
+				// Other hook facing in opposite direction - circuit completed!
 				break;
 			}
 			else
 			{
 				// Tripwire hook not connected at all, AND away all the power state bits
 				m_Chunk->SetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ, m_Chunk->GetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ) & 0x3);
-				WAKE_SIMULATOR_IF_DIRTY(m_Chunk, BlockX, a_RelBlockY, BlockZ);
+				SetSourceUnpowered(BlockX, a_RelBlockY, BlockZ, m_Chunk);
 				return;
 			}
 		}
@@ -1399,7 +1365,7 @@ void cIncrementalRedstoneSimulator::HandleTripwireHook(int a_RelBlockX, int a_Re
 		{
 			// Tripwire hook not connected at all, AND away all the power state bits
 			m_Chunk->SetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ, m_Chunk->GetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ) & 0x3);
-			WAKE_SIMULATOR_IF_DIRTY(m_Chunk, BlockX, a_RelBlockY, BlockZ);
+			SetSourceUnpowered(BlockX, a_RelBlockY, BlockZ, m_Chunk);
 			return;
 		}
 	}
@@ -1414,7 +1380,51 @@ void cIncrementalRedstoneSimulator::HandleTripwireHook(int a_RelBlockX, int a_Re
 	{
 		// Connected but not activated, AND away the highest bit
 		m_Chunk->SetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ, (m_Chunk->GetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ) & 0x7) | 0x4);
-		WAKE_SIMULATOR_IF_DIRTY(m_Chunk, BlockX, a_RelBlockY, BlockZ);
+		SetSourceUnpowered(BlockX, a_RelBlockY, BlockZ, m_Chunk);
+	}
+}
+
+
+
+
+
+void cIncrementalRedstoneSimulator::HandleTrappedChest(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ)
+{
+	class cGetTrappedChestPlayers :
+		public cChestCallback
+	{
+	public:
+		cGetTrappedChestPlayers(void) :
+			m_NumberOfPlayers(0)
+		{
+		}
+
+		virtual bool Item(cChestEntity * a_Chest) override
+		{
+			ASSERT(a_Chest->GetBlockType() == E_BLOCK_TRAPPED_CHEST);
+			m_NumberOfPlayers = a_Chest->GetNumberOfPlayers();
+			return (m_NumberOfPlayers <= 0);
+		}
+
+		unsigned char GetPowerLevel(void) const
+		{
+			return std::min(m_NumberOfPlayers, MAX_POWER_LEVEL);
+		}
+
+	private:
+		int m_NumberOfPlayers;
+
+	} GTCP;
+
+	int BlockX = m_Chunk->GetPosX() * cChunkDef::Width + a_RelBlockX;
+	int BlockZ = m_Chunk->GetPosZ() * cChunkDef::Width + a_RelBlockZ;
+	if (m_Chunk->DoWithChestAt(BlockX, a_RelBlockY, BlockZ, GTCP))
+	{
+		SetAllDirsAsPowered(a_RelBlockX, a_RelBlockY, a_RelBlockZ, GTCP.GetPowerLevel());
+	}
+	else
+	{
+		SetSourceUnpowered(BlockX, a_RelBlockY, BlockZ, m_Chunk);
 	}
 }
 
@@ -1691,8 +1701,8 @@ bool cIncrementalRedstoneSimulator::IsPistonPowered(int a_RelBlockX, int a_RelBl
 bool cIncrementalRedstoneSimulator::IsWirePowered(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ, unsigned char & a_PowerLevel)
 {
 	a_PowerLevel = 0;
-	int BlockX = (m_Chunk->GetPosX() * cChunkDef::Width) + a_RelBlockX;
-	int BlockZ = (m_Chunk->GetPosZ() * cChunkDef::Width) + a_RelBlockZ;
+	int BlockX = m_Chunk->GetPosX() * cChunkDef::Width + a_RelBlockX;
+	int BlockZ = m_Chunk->GetPosZ() * cChunkDef::Width + a_RelBlockZ;
 
 	for (PoweredBlocksList::const_iterator itr = m_PoweredBlocks->begin(); itr != m_PoweredBlocks->end(); ++itr) // Check powered list
 	{
@@ -1709,6 +1719,14 @@ bool cIncrementalRedstoneSimulator::IsWirePowered(int a_RelBlockX, int a_RelBloc
 		{
 			continue;
 		}
+
+		BLOCKTYPE Type = E_BLOCK_AIR;
+		int RelSourceX = itr->a_SourcePos.x - m_Chunk->GetPosX() * cChunkDef::Width;
+		int RelSourceZ = itr->a_SourcePos.z - m_Chunk->GetPosZ() * cChunkDef::Width;
+		if (!m_Chunk->UnboundedRelGetBlockType(RelSourceX, itr->a_SourcePos.y, RelSourceZ, Type) || (Type == E_BLOCK_REDSTONE_WIRE))
+		{
+			continue;
+		}
 		a_PowerLevel = std::max(itr->a_PowerLevel, a_PowerLevel);
 	}
 
@@ -1881,20 +1899,9 @@ void cIncrementalRedstoneSimulator::SetBlockPowered(int a_RelBlockX, int a_RelBl
 	int SourceX = (m_Chunk->GetPosX() * cChunkDef::Width) + a_RelSourceX;
 	int SourceZ = (m_Chunk->GetPosZ() * cChunkDef::Width) + a_RelSourceZ;
 
-	BLOCKTYPE Block = 0;
-	if (!m_Chunk->UnboundedRelGetBlockType(a_RelBlockX, a_RelBlockY, a_RelBlockZ, Block))
-	{
-		return;
-	}
-	if (Block == E_BLOCK_AIR)
-	{
-		// Don't set air, fixes some bugs (wires powering themselves)
-		return;
-	}
-
-	cChunk * Neighbour = m_Chunk->GetNeighborChunk(BlockX, BlockZ);
-	PoweredBlocksList * Powered = Neighbour->GetRedstoneSimulatorPoweredBlocksList();
-	for (PoweredBlocksList::iterator itr = Powered->begin(); itr != Powered->end(); ++itr)  // Check powered list
+	cChunk * Neighbour = m_Chunk->GetRelNeighborChunkAdjustCoords(a_RelBlockX, a_RelBlockZ); // Adjust coordinates for the later call using these values
+	PoweredBlocksList * Powered = Neighbour->GetRedstoneSimulatorPoweredBlocksList(); // We need to insert the value into the chunk who owns the block position
+	for (PoweredBlocksList::iterator itr = Powered->begin(); itr != Powered->end(); ++itr)
 	{
 		if (
 			itr->a_BlockPos.Equals(Vector3i(BlockX, a_RelBlockY, BlockZ)) &&
@@ -1907,16 +1914,33 @@ void cIncrementalRedstoneSimulator::SetBlockPowered(int a_RelBlockX, int a_RelBl
 		}
 	}
 
-	PoweredBlocksList * OtherPowered = m_Chunk->GetNeighborChunk(SourceX, SourceZ)->GetRedstoneSimulatorPoweredBlocksList();
-	for (PoweredBlocksList::const_iterator itr = OtherPowered->begin(); itr != OtherPowered->end(); ++itr)  // Check powered list
+	// No need to get neighbouring chunk as we can guarantee that when something is powering us, the entry will be in our chunk
+	// TODO: on C++11 support, change this to a llama function pased to a std::remove_if
+	for (PoweredBlocksList::iterator itr = m_PoweredBlocks->begin(); itr != m_PoweredBlocks->end(); ++itr)
 	{
 		if (
 			itr->a_BlockPos.Equals(Vector3i(SourceX, a_RelSourceY, SourceZ)) &&
-			itr->a_SourcePos.Equals(Vector3i(BlockX, a_RelBlockY, BlockZ))
+			itr->a_SourcePos.Equals(Vector3i(BlockX, a_RelBlockY, BlockZ)) &&
+			(m_Chunk->GetBlock(a_RelSourceX, a_RelSourceY, a_RelSourceZ) == E_BLOCK_REDSTONE_WIRE)
 			)
 		{
-			// Powered wires try to power their source - don't let them!
-			return;
+			BLOCKTYPE Block;
+			NIBBLETYPE Meta;
+			Neighbour->GetBlockTypeMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ, Block, Meta);
+
+			if (Block == E_BLOCK_REDSTONE_WIRE)
+			{
+				if (Meta < a_PowerLevel)
+				{
+					m_PoweredBlocks->erase(itr); // Powering source with higher power level, allow it
+					break;
+				}
+				else
+				{
+					// Powered wires try to power their source - don't let them!
+					return;
+				}
+			}
 		}
 	}
 
@@ -1947,20 +1971,6 @@ void cIncrementalRedstoneSimulator::SetBlockLinkedPowered(
 	int SourceX = (m_Chunk->GetPosX() * cChunkDef::Width) + a_RelSourceX;
 	int SourceZ = (m_Chunk->GetPosZ() * cChunkDef::Width) + a_RelSourceZ;
 
-	BLOCKTYPE DestBlock = 0;
-	if (!m_Chunk->UnboundedRelGetBlockType(a_RelBlockX, a_RelBlockY, a_RelBlockZ, DestBlock))
-	{
-		return;
-	}
-	if (DestBlock == E_BLOCK_AIR)
-	{
-		// Don't set air, fixes some bugs (wires powering themselves)
-		return;
-	}
-	if ((DestBlock == E_BLOCK_REDSTONE_WIRE) && (m_Chunk->GetBlock(a_RelSourceX, a_RelSourceY, a_RelSourceZ) == E_BLOCK_REDSTONE_WIRE))
-	{
-		return;
-	}
 	if (!IsViableMiddleBlock(a_MiddleBlock))
 	{
 		return;
@@ -2066,6 +2076,45 @@ bool cIncrementalRedstoneSimulator::QueueRepeaterPowerChange(int a_RelBlockX, in
 
 
 
+void cIncrementalRedstoneSimulator::SetSourceUnpowered(int a_SourceX, int a_SourceY, int a_SourceZ, cChunk * a_Chunk, bool a_IsFirstCall)
+{
+	// TODO: on C++11 support, change both of these to llama functions pased to a std::remove_if
+
+	for (PoweredBlocksList::iterator itr = a_Chunk->GetRedstoneSimulatorPoweredBlocksList()->begin(); itr != a_Chunk->GetRedstoneSimulatorPoweredBlocksList()->end();)
+	{
+		if (itr->a_SourcePos.Equals(Vector3i(a_SourceX, a_SourceY, a_SourceZ)))
+		{
+			itr = a_Chunk->GetRedstoneSimulatorPoweredBlocksList()->erase(itr);
+			a_Chunk->SetIsRedstoneDirty(true);
+			continue;
+		}
+		++itr;
+	}
+	for (LinkedBlocksList::iterator itr = a_Chunk->GetRedstoneSimulatorLinkedBlocksList()->begin(); itr != a_Chunk->GetRedstoneSimulatorLinkedBlocksList()->end();)
+	{
+		if (itr->a_SourcePos.Equals(Vector3i(a_SourceX, a_SourceY, a_SourceZ)))
+		{
+			itr = a_Chunk->GetRedstoneSimulatorLinkedBlocksList()->erase(itr);
+			a_Chunk->SetIsRedstoneDirty(true);
+			continue;
+		}
+		++itr;
+	}
+
+	if (a_IsFirstCall && AreCoordsOnChunkBoundary(a_SourceX, a_SourceY, a_SourceZ))
+	{
+		// +- 2 to accomodate linked powered blocks
+		SetSourceUnpowered(a_SourceX, a_SourceY, a_SourceZ, a_Chunk->GetNeighborChunk(a_SourceX - 2, a_SourceZ), false);
+		SetSourceUnpowered(a_SourceX, a_SourceY, a_SourceZ, a_Chunk->GetNeighborChunk(a_SourceX + 2, a_SourceZ), false);
+		SetSourceUnpowered(a_SourceX, a_SourceY, a_SourceZ, a_Chunk->GetNeighborChunk(a_SourceX, a_SourceZ - 2), false);
+		SetSourceUnpowered(a_SourceX, a_SourceY, a_SourceZ, a_Chunk->GetNeighborChunk(a_SourceX, a_SourceZ + 2), false);
+	}
+}
+
+
+
+
+
 cIncrementalRedstoneSimulator::eRedstoneDirection cIncrementalRedstoneSimulator::GetWireDirection(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ)
 {
 	int Dir = REDSTONE_NONE;
diff --git a/src/Simulator/IncrementalRedstoneSimulator.h b/src/Simulator/IncrementalRedstoneSimulator.h
index 6cefdebf2..ce987a60f 100644
--- a/src/Simulator/IncrementalRedstoneSimulator.h
+++ b/src/Simulator/IncrementalRedstoneSimulator.h
@@ -107,6 +107,8 @@ private:
 	If this line is complete, it verifies that at least on wire reports an entity is on top (via its meta), and performs its task
 	*/
 	void HandleTripwireHook(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ);
+	/** Handles trapped chests */
+	void HandleTrappedChest(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ);
 	/* ==================== */
 
 	/* ====== CARRIERS ====== */
@@ -114,8 +116,6 @@ private:
 	void HandleRedstoneWire(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ);
 	/** Handles repeaters */
 	void HandleRedstoneRepeater(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ, BLOCKTYPE a_MyState);
-	/** Handles delayed updates to Repeaters **/
-	void HandleRedstoneRepeaterDelays();
 	/* ====================== */
 
 	/* ====== DEVICES ====== */
@@ -156,6 +156,10 @@ private:
 	void SetAllDirsAsPowered(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ, unsigned char a_PowerLevel = MAX_POWER_LEVEL);
 	/** Queues a repeater to be powered or unpowered and returns if the m_RepeatersDelayList iterators were invalidated */
 	bool QueueRepeaterPowerChange(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ, NIBBLETYPE a_Meta, bool ShouldPowerOn);
+	/** Removes a block from the Powered and LinkedPowered lists
+	Used for variable sources such as tripwire hooks, daylight sensors, and trapped chests
+	*/
+	void SetSourceUnpowered(int a_RelSourceX, int a_RelSourceY, int a_RelSourceZ, cChunk * a_Chunk, bool a_IsFirstCall = true);
 
 	/** Returns if a coordinate is powered or linked powered */
 	bool AreCoordsPowered(int a_RelBlockX, int a_RelBlockY, int a_RelBlockZ) { return AreCoordsDirectlyPowered(a_RelBlockX, a_RelBlockY, a_RelBlockZ) || AreCoordsLinkedPowered(a_RelBlockX, a_RelBlockY, a_RelBlockZ); }
@@ -174,7 +178,8 @@ private:
 	/** 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_RelBlockX, int a_RelBlockY, int a_RelBlockZ, unsigned char & a_PowerLevel);
-
+	/** Handles delayed updates to repeaters **/
+	void HandleRedstoneRepeaterDelays(void);
 
 	/** Returns if lever metadata marks it as emitting power */
 	bool IsLeverOn(NIBBLETYPE a_BlockMeta);
@@ -186,7 +191,9 @@ private:
 	/** Returns if a block is viable to be the MiddleBlock of a SetLinkedPowered operation */
 	inline static bool IsViableMiddleBlock(BLOCKTYPE Block) { return cBlockInfo::FullyOccupiesVoxel(Block); }
 
-	/** Returns if a block is a mechanism (something that accepts power and does something) */
+	/** Returns if a block is a mechanism (something that accepts power and does something)
+	Used by torches to determine if they power a block whilst not standing on the ground
+	*/
 	inline static bool IsMechanism(BLOCKTYPE Block)
 	{
 		switch (Block)
@@ -209,6 +216,7 @@ private:
 			case E_BLOCK_REDSTONE_REPEATER_OFF:
 			case E_BLOCK_REDSTONE_REPEATER_ON:
 			case E_BLOCK_POWERED_RAIL:
+			case E_BLOCK_REDSTONE_WIRE:
 			{
 				return true;
 			}
@@ -235,6 +243,7 @@ private:
 			case E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE:
 			case E_BLOCK_STONE_PRESSURE_PLATE:
 			case E_BLOCK_WOODEN_PRESSURE_PLATE:
+			case E_BLOCK_TRAPPED_CHEST:
 			{
 				return true;
 			}
@@ -277,6 +286,7 @@ private:
 			case E_BLOCK_STONE_PRESSURE_PLATE:
 			case E_BLOCK_TNT:
 			case E_BLOCK_TRAPDOOR:
+			case E_BLOCK_TRAPPED_CHEST:
 			case E_BLOCK_TRIPWIRE_HOOK:
 			case E_BLOCK_TRIPWIRE:
 			case E_BLOCK_WOODEN_BUTTON:
@@ -289,6 +299,16 @@ private:
 			default: return false;
 		}
 	}
+
+	inline static bool AreCoordsOnChunkBoundary(int a_BlockX, int a_BlockY, int a_BlockZ)
+	{
+		return ( // Are we on a chunk boundary? +- 2 because of LinkedPowered blocks
+			((a_BlockX % cChunkDef::Width) <= 1) ||
+			((a_BlockX % cChunkDef::Width) >= 14) ||
+			((a_BlockZ % cChunkDef::Width) <= 1) ||
+			((a_BlockZ % cChunkDef::Width) >= 14)
+		);
+	}
 };
 
 
diff --git a/src/UI/Window.cpp b/src/UI/Window.cpp
index ebdc1aea8..43d923fa5 100644
--- a/src/UI/Window.cpp
+++ b/src/UI/Window.cpp
@@ -905,11 +905,13 @@ void cEnchantingWindow::GetBlockPos(int & a_PosX, int & a_PosY, int & a_PosZ)
 // cChestWindow:
 
 cChestWindow::cChestWindow(cChestEntity * a_Chest) :
-	cWindow(wtChest, "Chest"),
+	cWindow(wtChest, (a_Chest->GetBlockType() == E_BLOCK_CHEST) ? "Chest" : "Trapped Chest"),
 	m_World(a_Chest->GetWorld()),
 	m_BlockX(a_Chest->GetPosX()),
 	m_BlockY(a_Chest->GetPosY()),
-	m_BlockZ(a_Chest->GetPosZ())
+	m_BlockZ(a_Chest->GetPosZ()),
+	m_PrimaryChest(a_Chest),
+	m_SecondaryChest(NULL)
 {
 	m_SlotAreas.push_back(new cSlotAreaChest(a_Chest, *this));
 	m_SlotAreas.push_back(new cSlotAreaInventory(*this));
@@ -919,7 +921,7 @@ cChestWindow::cChestWindow(cChestEntity * a_Chest) :
 	m_World->BroadcastSoundEffect("random.chestopen", m_BlockX * 8, m_BlockY * 8, m_BlockZ * 8, 1, 1);
 
 	// Send out the chest-open packet:
-	m_World->BroadcastBlockAction(m_BlockX, m_BlockY, m_BlockZ, 1, 1, E_BLOCK_CHEST);
+	m_World->BroadcastBlockAction(m_BlockX, m_BlockY, m_BlockZ, 1, 1, a_Chest->GetBlockType());
 }
 
 
@@ -927,11 +929,13 @@ cChestWindow::cChestWindow(cChestEntity * a_Chest) :
 
 
 cChestWindow::cChestWindow(cChestEntity * a_PrimaryChest, cChestEntity * a_SecondaryChest) :
-	cWindow(wtChest, "Double Chest"),
+	cWindow(wtChest, (a_PrimaryChest->GetBlockType() == E_BLOCK_CHEST) ? "Double Chest" : "Double Trapped Chest"),
 	m_World(a_PrimaryChest->GetWorld()),
 	m_BlockX(a_PrimaryChest->GetPosX()),
 	m_BlockY(a_PrimaryChest->GetPosY()),
-	m_BlockZ(a_PrimaryChest->GetPosZ())
+	m_BlockZ(a_PrimaryChest->GetPosZ()),
+	m_PrimaryChest(a_PrimaryChest),
+	m_SecondaryChest(a_SecondaryChest)
 {
 	m_SlotAreas.push_back(new cSlotAreaDoubleChest(a_PrimaryChest, a_SecondaryChest, *this));
 	m_SlotAreas.push_back(new cSlotAreaInventory(*this));
@@ -943,7 +947,52 @@ cChestWindow::cChestWindow(cChestEntity * a_PrimaryChest, cChestEntity * a_Secon
 	m_World->BroadcastSoundEffect("random.chestopen", m_BlockX * 8, m_BlockY * 8, m_BlockZ * 8, 1, 1);
 
 	// Send out the chest-open packet:
-	m_World->BroadcastBlockAction(m_BlockX, m_BlockY, m_BlockZ, 1, 1, E_BLOCK_CHEST);
+	m_World->BroadcastBlockAction(m_BlockX, m_BlockY, m_BlockZ, 1, 1, a_PrimaryChest->GetBlockType());
+}
+
+
+
+
+
+void cChestWindow::OpenedByPlayer(cPlayer & a_Player)
+{
+	int ChunkX, ChunkZ;
+
+	m_PrimaryChest->SetNumberOfPlayers(m_PrimaryChest->GetNumberOfPlayers() + 1);
+	cChunkDef::BlockToChunk(m_PrimaryChest->GetPosX(), m_PrimaryChest->GetPosZ(), ChunkX, ChunkZ);
+	m_PrimaryChest->GetWorld()->MarkRedstoneDirty(ChunkX, ChunkZ);
+
+	if (m_SecondaryChest != NULL)
+	{
+		m_SecondaryChest->SetNumberOfPlayers(m_SecondaryChest->GetNumberOfPlayers() + 1);
+		cChunkDef::BlockToChunk(m_SecondaryChest->GetPosX(), m_SecondaryChest->GetPosZ(), ChunkX, ChunkZ);
+		m_SecondaryChest->GetWorld()->MarkRedstoneDirty(ChunkX, ChunkZ);
+	}
+
+	cWindow::OpenedByPlayer(a_Player);
+}
+
+
+
+
+
+bool cChestWindow::ClosedByPlayer(cPlayer & a_Player, bool a_CanRefuse)
+{
+	int ChunkX, ChunkZ;
+
+	m_PrimaryChest->SetNumberOfPlayers(m_PrimaryChest->GetNumberOfPlayers() - 1);
+	cChunkDef::BlockToChunk(m_PrimaryChest->GetPosX(), m_PrimaryChest->GetPosZ(), ChunkX, ChunkZ);
+	m_PrimaryChest->GetWorld()->MarkRedstoneDirty(ChunkX, ChunkZ);
+
+	if (m_SecondaryChest != NULL)
+	{
+		m_SecondaryChest->SetNumberOfPlayers(m_SecondaryChest->GetNumberOfPlayers() - 1);
+		cChunkDef::BlockToChunk(m_SecondaryChest->GetPosX(), m_SecondaryChest->GetPosZ(), ChunkX, ChunkZ);
+		m_SecondaryChest->GetWorld()->MarkRedstoneDirty(ChunkX, ChunkZ);
+	}
+
+	cWindow::ClosedByPlayer(a_Player, a_CanRefuse);
+	return true;
 }
 
 
@@ -953,7 +1002,7 @@ cChestWindow::cChestWindow(cChestEntity * a_PrimaryChest, cChestEntity * a_Secon
 cChestWindow::~cChestWindow()
 {
 	// Send out the chest-close packet:
-	m_World->BroadcastBlockAction(m_BlockX, m_BlockY, m_BlockZ, 1, 0, E_BLOCK_CHEST);
+	m_World->BroadcastBlockAction(m_BlockX, m_BlockY, m_BlockZ, 1, 0, m_PrimaryChest->GetBlockType());
 
 	m_World->BroadcastSoundEffect("random.chestclosed", m_BlockX * 8, m_BlockY * 8, m_BlockZ * 8, 1, 1);
 }
@@ -966,7 +1015,7 @@ cChestWindow::~cChestWindow()
 // cDropSpenserWindow:
 
 cDropSpenserWindow::cDropSpenserWindow(int a_BlockX, int a_BlockY, int a_BlockZ, cDropSpenserEntity * a_DropSpenser) :
-	cWindow(wtDropSpenser, "Dropspenser")
+	cWindow(wtDropSpenser, (a_DropSpenser->GetBlockType() == E_BLOCK_DISPENSER) ? "Dispenser" : "Dropper")
 {
 	m_ShouldDistributeToHotbarFirst = false;
 	m_SlotAreas.push_back(new cSlotAreaItemGrid(a_DropSpenser->GetContents(), *this));
diff --git a/src/UI/Window.h b/src/UI/Window.h
index 542dccb88..b170a9d78 100644
--- a/src/UI/Window.h
+++ b/src/UI/Window.h
@@ -114,7 +114,7 @@ public:
 		const cItem & a_ClickedItem
 	);
 
-	void OpenedByPlayer(cPlayer & a_Player);
+	virtual void OpenedByPlayer(cPlayer & a_Player);
 	
 	/// Called when a player closes this window; notifies all slot areas. Returns true if close accepted
 	virtual bool ClosedByPlayer(cPlayer & a_Player, bool a_CanRefuse);
@@ -327,10 +327,15 @@ public:
 	cChestWindow(cChestEntity * a_Chest);
 	cChestWindow(cChestEntity * a_PrimaryChest, cChestEntity * a_SecondaryChest);
 	~cChestWindow();
+
+	virtual bool ClosedByPlayer(cPlayer & a_Player, bool a_CanRefuse) override;
+	virtual void OpenedByPlayer(cPlayer & a_Player) override;
 	
 protected:
 	cWorld * m_World;
 	int m_BlockX, m_BlockY, m_BlockZ;  // Position of the chest, for the window-close packet
+	cChestEntity * m_PrimaryChest;
+	cChestEntity * m_SecondaryChest;
 } ;
 
 
diff --git a/src/World.cpp b/src/World.cpp
index f91a15260..64a629233 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -389,8 +389,8 @@ void cWorld::InitializeSpawn(void)
 		IniFile.WriteFile(m_IniFileName);
 	}
 
-	int ChunkX = 0, ChunkY = 0, ChunkZ = 0;
-	BlockToChunk((int)m_SpawnX, (int)m_SpawnY, (int)m_SpawnZ, ChunkX, ChunkY, ChunkZ);
+	int ChunkX = 0, ChunkZ = 0;
+	cChunkDef::BlockToChunk((int)m_SpawnX, (int)m_SpawnZ, ChunkX, ChunkZ);
 	
 	// For the debugging builds, don't make the server build too much world upon start:
 	#if defined(_DEBUG) || defined(ANDROID_NDK)
@@ -2182,9 +2182,18 @@ void cWorld::SendBlockEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cClientHa
 
 
 
-void cWorld::MarkChunkDirty (int a_ChunkX, int a_ChunkZ)
+void cWorld::MarkRedstoneDirty(int a_ChunkX, int a_ChunkZ)
 {
-	m_ChunkMap->MarkChunkDirty (a_ChunkX, a_ChunkZ);
+	m_ChunkMap->MarkRedstoneDirty(a_ChunkX, a_ChunkZ);
+}
+
+
+
+
+
+void cWorld::MarkChunkDirty(int a_ChunkX, int a_ChunkZ, bool a_MarkRedstoneDirty)
+{
+	m_ChunkMap->MarkChunkDirty(a_ChunkX, a_ChunkZ, a_MarkRedstoneDirty);
 }
 
 
diff --git a/src/World.h b/src/World.h
index f903ff5be..27dd81be3 100644
--- a/src/World.h
+++ b/src/World.h
@@ -241,7 +241,8 @@ public:
 	/** If there is a block entity at the specified coords, sends it to the client specified */
 	void SendBlockEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cClientHandle & a_Client);
 	
-	void MarkChunkDirty (int a_ChunkX, int a_ChunkZ);
+	void MarkRedstoneDirty(int a_ChunkX, int a_ChunkZ);
+	void MarkChunkDirty (int a_ChunkX, int a_ChunkZ, bool a_MarkRedstoneDirty = false);
 	void MarkChunkSaving(int a_ChunkX, int a_ChunkZ);
 	void MarkChunkSaved (int a_ChunkX, int a_ChunkZ);
 	
@@ -634,18 +635,6 @@ public:
 	
 	// tolua_end
 	
-	inline static void BlockToChunk( int a_X, int a_Y, int a_Z, int & a_ChunkX, int & a_ChunkY, int & a_ChunkZ )
-	{
-		// TODO: Use floor() instead of weird if statements
-		// Also fix Y
-		(void)a_Y; // not unused anymore
-		a_ChunkX = a_X/cChunkDef::Width;
-		if(a_X < 0 && a_X % cChunkDef::Width != 0) a_ChunkX--;
-		a_ChunkY = 0;
-		a_ChunkZ = a_Z/cChunkDef::Width;
-		if(a_Z < 0 && a_Z % cChunkDef::Width != 0) a_ChunkZ--;
-	}
-
 	/** Saves all chunks immediately. Dangerous interface, may deadlock, use QueueSaveAllChunks() instead */
 	void SaveAllChunks(void);
 	
diff --git a/src/WorldStorage/NBTChunkSerializer.cpp b/src/WorldStorage/NBTChunkSerializer.cpp
index 317ace795..3ccbceb7a 100644
--- a/src/WorldStorage/NBTChunkSerializer.cpp
+++ b/src/WorldStorage/NBTChunkSerializer.cpp
@@ -175,10 +175,10 @@ void cNBTChunkSerializer::AddBasicTileEntity(cBlockEntity * a_Entity, const char
 
 
 
-void cNBTChunkSerializer::AddChestEntity(cChestEntity * a_Entity)
+void cNBTChunkSerializer::AddChestEntity(cChestEntity * a_Entity, BLOCKTYPE a_ChestType)
 {
 	m_Writer.BeginCompound("");
-		AddBasicTileEntity(a_Entity, "Chest");
+		AddBasicTileEntity(a_Entity, (a_ChestType == E_BLOCK_CHEST) ? "Chest" : "TrappedChest");
 		m_Writer.BeginList("Items", TAG_Compound);
 			AddItemGrid(a_Entity->GetContents());
 		m_Writer.EndList();
@@ -813,19 +813,21 @@ void cNBTChunkSerializer::BlockEntity(cBlockEntity * a_Entity)
 	// Add tile-entity into NBT:
 	switch (a_Entity->GetBlockType())
 	{
-		case E_BLOCK_CHEST:         AddChestEntity       ((cChestEntity *)        a_Entity); break;
-		case E_BLOCK_DISPENSER:     AddDispenserEntity   ((cDispenserEntity *)    a_Entity); break;
-		case E_BLOCK_DROPPER:       AddDropperEntity     ((cDropperEntity *)      a_Entity); break;
-		case E_BLOCK_ENDER_CHEST:   /* No need to be saved */                                break;
-		case E_BLOCK_FLOWER_POT:    AddFlowerPotEntity   ((cFlowerPotEntity *)    a_Entity); break;
-		case E_BLOCK_FURNACE:       AddFurnaceEntity     ((cFurnaceEntity *)      a_Entity); break;
-		case E_BLOCK_HOPPER:        AddHopperEntity      ((cHopperEntity *)       a_Entity); break;
-		case E_BLOCK_SIGN_POST:
-		case E_BLOCK_WALLSIGN:      AddSignEntity        ((cSignEntity *)         a_Entity); break;
-		case E_BLOCK_HEAD:          AddMobHeadEntity     ((cMobHeadEntity *)      a_Entity); break;
-		case E_BLOCK_NOTE_BLOCK:    AddNoteEntity        ((cNoteEntity *)         a_Entity); break;
-		case E_BLOCK_JUKEBOX:       AddJukeboxEntity     ((cJukeboxEntity *)      a_Entity); break;
-		case E_BLOCK_COMMAND_BLOCK: AddCommandBlockEntity((cCommandBlockEntity *) a_Entity); break;
+		case E_BLOCK_CHEST:         AddChestEntity       ((cChestEntity *)       a_Entity, a_Entity->GetBlockType()); break;
+		case E_BLOCK_COMMAND_BLOCK: AddCommandBlockEntity((cCommandBlockEntity *)a_Entity); break;
+		case E_BLOCK_DISPENSER:     AddDispenserEntity   ((cDispenserEntity *)   a_Entity); break;
+		case E_BLOCK_DROPPER:       AddDropperEntity     ((cDropperEntity *)     a_Entity); break;
+		case E_BLOCK_ENDER_CHEST:   /* No data to be saved */                               break;
+		case E_BLOCK_FLOWER_POT:    AddFlowerPotEntity   ((cFlowerPotEntity *)   a_Entity); break;
+		case E_BLOCK_FURNACE:       AddFurnaceEntity     ((cFurnaceEntity *)     a_Entity); break;
+		case E_BLOCK_HEAD:          AddMobHeadEntity     ((cMobHeadEntity *)     a_Entity); break;
+		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_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;
+		case E_BLOCK_WALLSIGN:      AddSignEntity        ((cSignEntity *)        a_Entity); break;
 
 		default:
 		{
diff --git a/src/WorldStorage/NBTChunkSerializer.h b/src/WorldStorage/NBTChunkSerializer.h
index 112afc27e..f73f4ad7d 100644
--- a/src/WorldStorage/NBTChunkSerializer.h
+++ b/src/WorldStorage/NBTChunkSerializer.h
@@ -92,7 +92,7 @@ protected:
 	
 	// Block entities:
 	void AddBasicTileEntity(cBlockEntity *     a_Entity, const char * a_EntityTypeID);
-	void AddChestEntity    (cChestEntity *     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);
diff --git a/src/WorldStorage/WSSAnvil.cpp b/src/WorldStorage/WSSAnvil.cpp
index f13c4d4d2..fb2aebbf5 100644
--- a/src/WorldStorage/WSSAnvil.cpp
+++ b/src/WorldStorage/WSSAnvil.cpp
@@ -582,7 +582,7 @@ void cWSSAnvil::LoadBlockEntitiesFromNBT(cBlockEntityList & a_BlockEntities, con
 		}
 		if (strncmp(a_NBT.GetData(sID), "Chest", a_NBT.GetDataLength(sID)) == 0)
 		{
-			LoadChestFromNBT(a_BlockEntities, a_NBT, Child);
+			LoadChestFromNBT(a_BlockEntities, a_NBT, Child, E_BLOCK_CHEST);
 		}
 		else if (strncmp(a_NBT.GetData(sID), "Control", a_NBT.GetDataLength(sID)) == 0)
 		{
@@ -624,6 +624,10 @@ void cWSSAnvil::LoadBlockEntitiesFromNBT(cBlockEntityList & a_BlockEntities, con
 		{
 			LoadDispenserFromNBT(a_BlockEntities, a_NBT, Child);
 		}
+		else if (strncmp(a_NBT.GetData(sID), "TrappedChest", a_NBT.GetDataLength(sID)) == 0)
+		{
+			LoadChestFromNBT(a_BlockEntities, a_NBT, Child, E_BLOCK_TRAPPED_CHEST);
+		}
 		// TODO: Other block entities
 	}  // for Child - tag children
 }
@@ -740,7 +744,7 @@ void cWSSAnvil::LoadItemGridFromNBT(cItemGrid & a_ItemGrid, const cParsedNBT & a
 
 
 
-void cWSSAnvil::LoadChestFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx)
+void cWSSAnvil::LoadChestFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx, BLOCKTYPE a_ChestType)
 {
 	ASSERT(a_NBT.GetType(a_TagIdx) == TAG_Compound);
 	int x, y, z;
@@ -753,7 +757,7 @@ void cWSSAnvil::LoadChestFromNBT(cBlockEntityList & a_BlockEntities, const cPars
 	{
 		return;  // Make it an empty chest - the chunk loader will provide an empty cChestEntity for this
 	}
-	std::auto_ptr<cChestEntity> Chest(new cChestEntity(x, y, z, m_World));
+	std::auto_ptr<cChestEntity> Chest(new cChestEntity(x, y, z, m_World, a_ChestType));
 	LoadItemGridFromNBT(Chest->GetContents(), a_NBT, Items);
 	a_BlockEntities.push_back(Chest.release());
 }
diff --git a/src/WorldStorage/WSSAnvil.h b/src/WorldStorage/WSSAnvil.h
index 7542a828a..6f619fdb8 100644
--- a/src/WorldStorage/WSSAnvil.h
+++ b/src/WorldStorage/WSSAnvil.h
@@ -133,7 +133,7 @@ protected:
 	*/
 	void LoadItemGridFromNBT(cItemGrid & a_ItemGrid, const cParsedNBT & a_NBT, int a_ItemsTagIdx, int s_SlotOffset = 0);
 	
-	void LoadChestFromNBT       (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx);
+	void LoadChestFromNBT       (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx, BLOCKTYPE a_ChestType);
 	void LoadDispenserFromNBT   (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx);
 	void LoadDropperFromNBT     (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx);
 	void LoadFlowerPotFromNBT   (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx);
diff --git a/src/WorldStorage/WSSCompact.cpp b/src/WorldStorage/WSSCompact.cpp
index a853f6ec9..a3ba443fd 100644
--- a/src/WorldStorage/WSSCompact.cpp
+++ b/src/WorldStorage/WSSCompact.cpp
@@ -273,7 +273,7 @@ void cWSSCompact::LoadEntitiesFromJson(Json::Value & a_Value, cEntityList & a_En
 	{
 		for (Json::Value::iterator itr = AllChests.begin(); itr != AllChests.end(); ++itr )
 		{
-			std::auto_ptr<cChestEntity> ChestEntity(new cChestEntity(0, 0, 0, a_World));
+			std::auto_ptr<cChestEntity> ChestEntity(new cChestEntity(0, 0, 0, a_World, E_BLOCK_CHEST));
 			if (!ChestEntity->LoadFromJson(*itr))
 			{
 				LOGWARNING("ERROR READING CHEST FROM JSON!" );