15 files changed, 362 insertions, 56 deletions

diff --git a/src/Blocks/BlockButton.h b/src/Blocks/BlockButton.h
index 4b2f6f618..ada7d58f7 100644
--- a/src/Blocks/BlockButton.h
+++ b/src/Blocks/BlockButton.h
@@ -23,6 +23,7 @@ public:
 		NIBBLETYPE Meta = (a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ) | 0x08);
 
 		a_ChunkInterface.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, Meta);
+		a_WorldInterface.WakeUpSimulators(a_BlockX, a_BlockY, a_BlockZ);
 		a_WorldInterface.GetBroadcastManager().BroadcastSoundEffect("random.click", a_BlockX * 8, a_BlockY * 8, a_BlockZ * 8, 0.5f, (Meta & 0x08) ? 0.6f : 0.5f);
 
 		// Queue a button reset (unpress)
@@ -102,7 +103,7 @@ public:
 		AddFaceDirection(a_RelX, a_RelY, a_RelZ, BlockMetaDataToBlockFace(Meta), true);
 		BLOCKTYPE BlockIsOn; a_Chunk.UnboundedRelGetBlockType(a_RelX, a_RelY, a_RelZ, BlockIsOn);
 
-		return (a_RelY > 0) && (cBlockInfo::IsSolid(BlockIsOn));
+		return (a_RelY > 0) && (cBlockInfo::FullyOccupiesVoxel(BlockIsOn));
 	}
 } ;
 
diff --git a/src/Blocks/BlockDoor.cpp b/src/Blocks/BlockDoor.cpp
index fb2d6f2dc..934a01994 100644
--- a/src/Blocks/BlockDoor.cpp
+++ b/src/Blocks/BlockDoor.cpp
@@ -45,9 +45,16 @@ void cBlockDoorHandler::OnDestroyed(cChunkInterface & a_ChunkInterface, cWorldIn
 
 void cBlockDoorHandler::OnUse(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ)
 {
+	UNUSED(a_WorldInterface);
+	UNUSED(a_BlockFace);
+	UNUSED(a_CursorX);
+	UNUSED(a_CursorY);
+	UNUSED(a_CursorZ);
+
 	if (a_ChunkInterface.GetBlock(a_BlockX, a_BlockY, a_BlockZ) == E_BLOCK_WOODEN_DOOR)
 	{
 		ChangeDoor(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ);
+		a_Player->GetWorld()->BroadcastSoundParticleEffect(1003, a_BlockX, a_BlockY, a_BlockZ, 0, a_Player->GetClientHandle());
 	}
 }
 
diff --git a/src/Blocks/BlockFenceGate.h b/src/Blocks/BlockFenceGate.h
index e202c6610..e992870d4 100644
--- a/src/Blocks/BlockFenceGate.h
+++ b/src/Blocks/BlockFenceGate.h
@@ -45,6 +45,7 @@ public:
 			// Standing aside - use last direction
 			a_ChunkInterface.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, OldMetaData);
 		}
+		a_Player->GetWorld()->BroadcastSoundParticleEffect(1003, a_BlockX, a_BlockY, a_BlockZ, 0, a_Player->GetClientHandle());
 	}
 
 
diff --git a/src/Blocks/BlockFire.h b/src/Blocks/BlockFire.h
index f9f32eb50..147e4b53e 100644
--- a/src/Blocks/BlockFire.h
+++ b/src/Blocks/BlockFire.h
@@ -36,8 +36,8 @@ public:
 		- Loop through boundary variables, and fill with portal blocks based on Dir with meta from Dir
 		*/
 
-		a_BlockY--; // Because we want the block below the fire
-		FindAndSetPortalFrame(a_BlockX, a_BlockY, a_BlockZ, a_ChunkInterface, a_WorldInterface);
+		// a_BlockY - 1: Because we want the block below the fire
+		FindAndSetPortalFrame(a_BlockX, a_BlockY - 1, a_BlockZ, a_ChunkInterface, a_WorldInterface);
 	}
 
 	virtual void OnDigging(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ) override
diff --git a/src/Blocks/BlockHandler.cpp b/src/Blocks/BlockHandler.cpp
index 6b08ec9ba..3ddb7531d 100644
--- a/src/Blocks/BlockHandler.cpp
+++ b/src/Blocks/BlockHandler.cpp
@@ -38,6 +38,7 @@
 #include "BlockGlass.h"
 #include "BlockGlowstone.h"
 #include "BlockGravel.h"
+#include "BlockHayBale.h"
 #include "BlockMobHead.h"
 #include "BlockHopper.h"
 #include "BlockIce.h"
@@ -64,6 +65,8 @@
 #include "BlockRedstoneRepeater.h"
 #include "BlockRedstoneTorch.h"
 #include "BlockTNT.h"
+#include "BlockTripwire.h"
+#include "BlockTripwireHook.h"
 #include "BlockSand.h"
 #include "BlockSapling.h"
 #include "BlockSideways.h"
@@ -84,6 +87,91 @@
 
 
 
+/*
+// Tests the meta rotation and mirroring.
+// Note that the cMetaRotator needs to have its assert paths disabled for this test to work!
+static class cBlockHandlerRotationTester
+{
+public:
+	cBlockHandlerRotationTester(void)
+	{
+		printf("Performing block handlers test...\n");
+		for (BLOCKTYPE Type = 0; Type < E_BLOCK_MAX_TYPE_ID; Type++)
+		{
+			cBlockHandler * Handler = cBlockInfo::GetHandler(Type);
+			if (Handler == NULL)
+			{
+				printf("NULL handler for block type %d!\n", Type);
+				continue;
+			}
+			AString BlockName = ItemTypeToString(Type);
+			for (NIBBLETYPE Meta = 0; Meta < 16; Meta++)
+			{
+				// Test the CW / CCW rotations:
+				NIBBLETYPE TestMeta;
+				TestMeta = Handler->MetaRotateCW(Handler->MetaRotateCW(Handler->MetaRotateCW(Handler->MetaRotateCW(Meta))));
+				if (TestMeta != Meta)
+				{
+					// 4 CW rotations should produce no change in the meta
+					printf("Handler for blocktype %d (%s) fails CW 4-rotation test for meta %d: got back %d\n", Type, BlockName.c_str(), Meta, TestMeta);
+				}
+				TestMeta = Handler->MetaRotateCCW(Handler->MetaRotateCCW(Handler->MetaRotateCCW(Handler->MetaRotateCCW(Meta))));
+				if (TestMeta != Meta)
+				{
+					// 4 CCW rotations should produce no change in the meta
+					printf("Handler for blocktype %d (%s) fails CCW 4-rotation test for meta %d: got back %d\n", Type, BlockName.c_str(), Meta, TestMeta);
+				}
+				TestMeta = Handler->MetaRotateCCW(Handler->MetaRotateCW(Meta));
+				if (TestMeta != Meta)
+				{
+					// CCW rotation of a CW rotation should produce no change in the meta
+					printf("Handler for blocktype %d (%s) fails CCW(CW) rotation test for meta %d: got back %d\n", Type, BlockName.c_str(), Meta, TestMeta);
+				}
+				TestMeta = Handler->MetaRotateCW(Handler->MetaRotateCCW(Meta));
+				if (TestMeta != Meta)
+				{
+					// CW rotation of a CCW rotation should produce no change in the meta
+					printf("Handler for blocktype %d (%s) fails CW(CCW) rotation test for meta %d: got back %d\n", Type, BlockName.c_str(), Meta, TestMeta);
+				}
+				
+				// Test the mirroring:
+				TestMeta = Handler->MetaMirrorXY(Handler->MetaMirrorXY(Meta));
+				if (TestMeta != Meta)
+				{
+					// Double-mirroring should produce the same meta:
+					printf("Handler for blocktype %d (%s) fails XY mirror test for meta %d: got back %d\n", Type, BlockName.c_str(), Meta, TestMeta);
+				}
+				TestMeta = Handler->MetaMirrorXZ(Handler->MetaMirrorXZ(Meta));
+				if (TestMeta != Meta)
+				{
+					// Double-mirroring should produce the same meta:
+					printf("Handler for blocktype %d (%s) fails XZ mirror test for meta %d: got back %d\n", Type, BlockName.c_str(), Meta, TestMeta);
+				}
+				TestMeta = Handler->MetaMirrorYZ(Handler->MetaMirrorYZ(Meta));
+				if (TestMeta != Meta)
+				{
+					// Double-mirroring should produce the same meta:
+					printf("Handler for blocktype %d (%s) fails YZ mirror test for meta %d: got back %d\n", Type, BlockName.c_str(), Meta, TestMeta);
+				}
+				
+				// Test mirror-rotating:
+				TestMeta = Handler->MetaRotateCW(Handler->MetaRotateCW(Handler->MetaMirrorXY(Handler->MetaMirrorYZ(Meta))));
+				if (TestMeta != Meta)
+				{
+					// 2 CW rotations should be the same as XY, YZ mirroring:
+					printf("Handler for blocktype %d (%s) fails rotation-mirror test for meta %d: got back %d\n", Type, BlockName.c_str(), Meta, TestMeta);
+				}
+			}
+		}  // for Type
+		printf("Block handlers test complete.\n");
+	}
+} g_BlockHandlerRotationTester;
+//*/
+
+
+
+
+
 cBlockHandler * cBlockHandler::CreateBlockHandler(BLOCKTYPE a_BlockType)
 {
 	switch(a_BlockType)
@@ -134,7 +222,7 @@ cBlockHandler * cBlockHandler::CreateBlockHandler(BLOCKTYPE a_BlockType)
 		case E_BLOCK_GLASS_PANE:            return new cBlockGlassHandler           (a_BlockType);
 		case E_BLOCK_GRASS:                 return new cBlockDirtHandler            (a_BlockType);
 		case E_BLOCK_GRAVEL:                return new cBlockGravelHandler          (a_BlockType);
-		case E_BLOCK_HAY_BALE:              return new cBlockSidewaysHandler        (a_BlockType);
+		case E_BLOCK_HAY_BALE:              return new cBlockHayBaleHandler         (a_BlockType);
 		case E_BLOCK_HEAD:                  return new cBlockMobHeadHandler         (a_BlockType);
 		case E_BLOCK_HEAVY_WEIGHTED_PRESSURE_PLATE: return new cBlockPressurePlateHandler(a_BlockType);
 		case E_BLOCK_HOPPER:                return new cBlockHopperHandler          (a_BlockType);
@@ -174,7 +262,7 @@ cBlockHandler * cBlockHandler::CreateBlockHandler(BLOCKTYPE a_BlockType)
 		case E_BLOCK_QUARTZ_BLOCK:          return new cBlockQuartzHandler          (a_BlockType);
 		case E_BLOCK_QUARTZ_STAIRS:         return new cBlockStairsHandler          (a_BlockType);
 		case E_BLOCK_RAIL:                  return new cBlockRailHandler            (a_BlockType);
-		case E_BLOCK_REDSTONE_LAMP_ON:      return new cBlockRedstoneLampHandler    (a_BlockType); // We need this to change pickups to an off lamp; else 1.7+ clients crash
+		case E_BLOCK_REDSTONE_LAMP_ON:      return new cBlockRedstoneLampHandler    (a_BlockType);
 		case E_BLOCK_REDSTONE_ORE:          return new cBlockOreHandler             (a_BlockType);
 		case E_BLOCK_REDSTONE_ORE_GLOWING:  return new cBlockOreHandler             (a_BlockType);
 		case E_BLOCK_REDSTONE_REPEATER_OFF: return new cBlockRedstoneRepeaterHandler(a_BlockType);
@@ -205,8 +293,10 @@ 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_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);
-		case E_BLOCK_WALLSIGN:              return new cBlockSignHandler            (a_BlockType);
+		case E_BLOCK_WALLSIGN:              return new cBlockSignHandler            (a_BlockType);  // TODO: This needs a special handler
 		case E_BLOCK_WATER:                 return new cBlockFluidHandler           (a_BlockType);
 		case E_BLOCK_WOODEN_BUTTON:         return new cBlockButtonHandler          (a_BlockType);
 		case E_BLOCK_WOODEN_DOOR:           return new cBlockDoorHandler            (a_BlockType);
diff --git a/src/Blocks/BlockHayBale.h b/src/Blocks/BlockHayBale.h
new file mode 100644
index 000000000..5b646e264
--- /dev/null
+++ b/src/Blocks/BlockHayBale.h
@@ -0,0 +1,29 @@
+
+#pragma once
+
+#include "BlockHandler.h"
+#include "BlockSideways.h"
+
+
+
+
+
+class cBlockHayBaleHandler :
+	public cBlockSidewaysHandler
+{
+public:
+	cBlockHayBaleHandler(BLOCKTYPE a_BlockType)
+		: cBlockSidewaysHandler(a_BlockType)
+	{
+	}
+
+
+	virtual const char * GetStepSound(void) override
+	{
+		return "step.grass";
+	}
+} ;
+
+
+
+
diff --git a/src/Blocks/BlockLever.h b/src/Blocks/BlockLever.h
index ad2ae29e5..4e745d413 100644
--- a/src/Blocks/BlockLever.h
+++ b/src/Blocks/BlockLever.h
@@ -7,12 +7,13 @@
 
 
 class cBlockLeverHandler :
-	public cMetaRotator<cBlockHandler, 0x07, 0x04, 0x02, 0x03, 0x01, false>
+	public cMetaRotator<cBlockHandler, 0x07, 0x04, 0x01, 0x03, 0x02, false>
 {
-	typedef cMetaRotator<cBlockHandler, 0x07, 0x04, 0x02, 0x03, 0x01, false> super;
+	typedef cMetaRotator<cBlockHandler, 0x07, 0x04, 0x01, 0x03, 0x02, false> super;
+	
 public:
-	cBlockLeverHandler(BLOCKTYPE a_BlockType)
-		: cMetaRotator<cBlockHandler, 0x07, 0x04, 0x02, 0x03, 0x01, false>(a_BlockType)
+	cBlockLeverHandler(BLOCKTYPE a_BlockType) :
+		super(a_BlockType)
 	{
 	}
 	
@@ -21,7 +22,8 @@ public:
 		// Flip the ON bit on/off using the XOR bitwise operation
 		NIBBLETYPE Meta = (a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ) ^ 0x08);
 
-		a_ChunkInterface.SetBlock(a_WorldInterface, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_LEVER, Meta); // SetMeta doesn't work for unpowering levers, so setblock
+		a_ChunkInterface.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, Meta);
+		a_WorldInterface.WakeUpSimulators(a_BlockX, a_BlockY, a_BlockZ);
 		a_WorldInterface.GetBroadcastManager().BroadcastSoundEffect("random.click", a_BlockX * 8, a_BlockY * 8, a_BlockZ * 8, 0.5f, (Meta & 0x08) ? 0.6f : 0.5f);
 	}
 
@@ -103,7 +105,7 @@ public:
 		AddFaceDirection(a_RelX, a_RelY, a_RelZ, BlockMetaDataToBlockFace(Meta), true);
 		BLOCKTYPE BlockIsOn; a_Chunk.UnboundedRelGetBlockType(a_RelX, a_RelY, a_RelZ, BlockIsOn);
 
-		return (a_RelY > 0) && cBlockInfo::IsSolid(BlockIsOn);
+		return (a_RelY > 0) && cBlockInfo::FullyOccupiesVoxel(BlockIsOn);
 	}
 
 
@@ -132,7 +134,7 @@ public:
 			case 0x05: return 0x06;  // Ground rotation
 			case 0x06: return 0x05;
 
-			default:  return super::MetaRotateCCW(a_Meta);  // Wall Rotation
+			default:  return super::MetaRotateCW(a_Meta);  // Wall Rotation
 		}
 	}
 } ;
diff --git a/src/Blocks/BlockMobHead.h b/src/Blocks/BlockMobHead.h
index 9855574ad..301386568 100644
--- a/src/Blocks/BlockMobHead.h
+++ b/src/Blocks/BlockMobHead.h
@@ -19,24 +19,69 @@ public:
 	
 	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
 	{
-		a_Pickups.push_back(cItem(E_ITEM_HEAD, 1, 0));
+		// The drop spawn is in OnDestroyed method
 	}
+	
+	virtual void OnDestroyedByPlayer(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ) override
+	{
+		if (a_Player->IsGameModeCreative())
+		{
+			// No drops in creative mode
+			return;
+		}
+
+		class cCallback : public cBlockEntityCallback
+		{
+			virtual bool Item(cBlockEntity * a_BlockEntity)
+			{
+				if (a_BlockEntity->GetBlockType() != E_BLOCK_HEAD)
+				{
+					return false;
+				}
+				cMobHeadEntity * MobHeadEntity = static_cast<cMobHeadEntity*>(a_BlockEntity);
+				
+				cItems Pickups;
+				Pickups.Add(E_ITEM_HEAD, 1, (short) MobHeadEntity->GetType());
+				MTRand r1;
+
+				// Mid-block position first
+				double MicroX, MicroY, MicroZ;
+				MicroX = MobHeadEntity->GetPosX() + 0.5;
+				MicroY = MobHeadEntity->GetPosY() + 0.5;
+				MicroZ = MobHeadEntity->GetPosZ() + 0.5;
+
+				// Add random offset second
+				MicroX += r1.rand(1) - 0.5;
+				MicroZ += r1.rand(1) - 0.5;
 
-	bool TrySpawnWither(cChunkInterface & a_ChunkInterface, cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ)
+				MobHeadEntity->GetWorld()->SpawnItemPickups(Pickups, MicroX, MicroY, MicroZ);
+				return false;
+			}
+		} Callback;
+		
+		a_WorldInterface.DoWithBlockEntityAt(a_BlockX, a_BlockY, a_BlockZ, Callback);
+	}
+
+	bool TrySpawnWither(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
 	{
 		if (a_BlockY < 2)
 		{
 			return false;
 		}
 
-		class cCallback : public cMobHeadCallback
+		class cCallback : public cBlockEntityCallback
 		{
 			bool m_IsWither;
 			
-			virtual bool Item (cMobHeadEntity * a_MobHeadEntity)
+			virtual bool Item(cBlockEntity * a_BlockEntity)
 			{
-				m_IsWither = (a_MobHeadEntity->GetType() == SKULL_TYPE_WITHER);
+				if (a_BlockEntity->GetBlockType() != E_BLOCK_HEAD)
+				{
+					return false;
+				}
+				cMobHeadEntity * MobHeadEntity = static_cast<cMobHeadEntity*>(a_BlockEntity);
 
+				m_IsWither = (MobHeadEntity->GetType() == SKULL_TYPE_WITHER);
 				return false;
 			}
 		
@@ -70,7 +115,7 @@ public:
 
 		} PlayerCallback(Vector3f((float)a_BlockX, (float)a_BlockY, (float)a_BlockZ));
 
-		a_World->DoWithMobHeadAt(a_BlockX, a_BlockY, a_BlockZ, CallbackA);
+		a_WorldInterface.DoWithBlockEntityAt(a_BlockX, a_BlockY, a_BlockZ, CallbackA);
 
 		if (!CallbackA.IsWither())
 		{
@@ -87,8 +132,8 @@ public:
 			return false;
 		}
 		
-		a_World->DoWithMobHeadAt(a_BlockX - 1, a_BlockY, a_BlockZ, CallbackA);
-		a_World->DoWithMobHeadAt(a_BlockX + 1, a_BlockY, a_BlockZ, CallbackB);
+		a_WorldInterface.DoWithBlockEntityAt(a_BlockX - 1, a_BlockY, a_BlockZ, CallbackA);
+		a_WorldInterface.DoWithBlockEntityAt(a_BlockX + 1, a_BlockY, a_BlockZ, CallbackB);
 
 		BLOCKTYPE Block1 = a_ChunkInterface.GetBlock(a_BlockX - 1, a_BlockY - 1, a_BlockZ);
 		BLOCKTYPE Block2 = a_ChunkInterface.GetBlock(a_BlockX + 1, a_BlockY - 1, a_BlockZ);
@@ -101,15 +146,15 @@ public:
 			a_ChunkInterface.FastSetBlock(a_BlockX,     a_BlockY - 2, a_BlockZ, E_BLOCK_AIR, 0);
 
 			// Block entities
-			a_World->SetBlock(a_BlockX + 1, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0);
-			a_World->SetBlock(a_BlockX,     a_BlockY, a_BlockZ, E_BLOCK_AIR, 0);
-			a_World->SetBlock(a_BlockX - 1, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0);
+			a_ChunkInterface.SetBlock(a_WorldInterface, a_BlockX + 1, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0);
+			a_ChunkInterface.SetBlock(a_WorldInterface, a_BlockX,     a_BlockY, a_BlockZ, E_BLOCK_AIR, 0);
+			a_ChunkInterface.SetBlock(a_WorldInterface, a_BlockX - 1, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0);
 
 			// Spawn the wither:
-			a_World->SpawnMob(a_BlockX + 0.5, a_BlockY - 2, a_BlockZ + 0.5, cMonster::mtWither);
+			a_WorldInterface.SpawnMob(a_BlockX + 0.5, a_BlockY - 2, a_BlockZ + 0.5, cMonster::mtWither);
 
 			// Award Achievement
-			a_World->ForEachPlayer(PlayerCallback);
+			a_WorldInterface.ForEachPlayer(PlayerCallback);
 
 			return true;
 		}
@@ -117,8 +162,8 @@ public:
 		CallbackA.Reset();
 		CallbackB.Reset();
 		
-		a_World->DoWithMobHeadAt(a_BlockX, a_BlockY, a_BlockZ - 1, CallbackA);
-		a_World->DoWithMobHeadAt(a_BlockX, a_BlockY, a_BlockZ + 1, CallbackB);
+		a_WorldInterface.DoWithBlockEntityAt(a_BlockX, a_BlockY, a_BlockZ - 1, CallbackA);
+		a_WorldInterface.DoWithBlockEntityAt(a_BlockX, a_BlockY, a_BlockZ + 1, CallbackB);
 
 		Block1 = a_ChunkInterface.GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ - 1);
 		Block2 = a_ChunkInterface.GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ + 1);
@@ -131,15 +176,15 @@ public:
 			a_ChunkInterface.FastSetBlock(a_BlockX, a_BlockY - 2, a_BlockZ,     E_BLOCK_AIR, 0);
 
 			// Block entities
-			a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ + 1, E_BLOCK_AIR, 0);
-			a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ,     E_BLOCK_AIR, 0);
-			a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ - 1, E_BLOCK_AIR, 0);
+			a_ChunkInterface.SetBlock(a_WorldInterface, a_BlockX, a_BlockY, a_BlockZ + 1, E_BLOCK_AIR, 0);
+			a_ChunkInterface.SetBlock(a_WorldInterface, a_BlockX, a_BlockY, a_BlockZ,     E_BLOCK_AIR, 0);
+			a_ChunkInterface.SetBlock(a_WorldInterface, a_BlockX, a_BlockY, a_BlockZ - 1, E_BLOCK_AIR, 0);
 
 			// Spawn the wither:
-			a_World->SpawnMob(a_BlockX + 0.5, a_BlockY - 2, a_BlockZ + 0.5, cMonster::mtWither);
+			a_WorldInterface.SpawnMob(a_BlockX + 0.5, a_BlockY - 2, a_BlockZ + 0.5, cMonster::mtWither);
 
 			// Award Achievement
-			a_World->ForEachPlayer(PlayerCallback);
+			a_WorldInterface.ForEachPlayer(PlayerCallback);
 
 			return true;
 		}
@@ -154,23 +199,29 @@ public:
 		BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta
 	) override
 	{
-		class cCallback : public cMobHeadCallback
+		class cCallback : public cBlockEntityCallback
 		{
 			cPlayer * m_Player;
 			NIBBLETYPE m_OldBlockMeta;
 			NIBBLETYPE m_NewBlockMeta;
 			
-			virtual bool Item (cMobHeadEntity * a_MobHeadEntity)
+			virtual bool Item(cBlockEntity * a_BlockEntity)
 			{
+				if (a_BlockEntity->GetBlockType() != E_BLOCK_HEAD)
+				{
+					return false;
+				}
+				cMobHeadEntity * MobHeadEntity = static_cast<cMobHeadEntity*>(a_BlockEntity);
+
 				int Rotation = 0;
 				if (m_NewBlockMeta == 1)
 				{
 					Rotation = (int) floor(m_Player->GetYaw() * 16.0F / 360.0F + 0.5) & 0xF;
 				}
-				
-				a_MobHeadEntity->SetType(static_cast<eMobHeadType>(m_OldBlockMeta));
-				a_MobHeadEntity->SetRotation(static_cast<eMobHeadRotation>(Rotation));
-				a_MobHeadEntity->GetWorld()->BroadcastBlockEntity(a_MobHeadEntity->GetPosX(), a_MobHeadEntity->GetPosY(), a_MobHeadEntity->GetPosZ(), m_Player->GetClientHandle());
+
+				MobHeadEntity->SetType(static_cast<eMobHeadType>(m_OldBlockMeta));
+				MobHeadEntity->SetRotation(static_cast<eMobHeadRotation>(Rotation));
+				MobHeadEntity->GetWorld()->BroadcastBlockEntity(MobHeadEntity->GetPosX(), MobHeadEntity->GetPosY(), MobHeadEntity->GetPosZ());
 				return false;
 			}
 		
@@ -184,8 +235,7 @@ public:
 		cCallback Callback(a_Player, a_BlockMeta, static_cast<NIBBLETYPE>(a_BlockFace));
 		
 		a_BlockMeta = (NIBBLETYPE)a_BlockFace;
-		cWorld * World = (cWorld *) &a_WorldInterface;
-		World->DoWithMobHeadAt(a_BlockX, a_BlockY, a_BlockZ, Callback);
+		a_WorldInterface.DoWithBlockEntityAt(a_BlockX, a_BlockY, a_BlockZ, Callback);
 		a_ChunkInterface.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, a_BlockMeta);
 
 		if (a_BlockMeta == SKULL_TYPE_WITHER)
@@ -200,7 +250,7 @@ public:
 			};
 			for (size_t i = 0; i < ARRAYCOUNT(Coords); ++i)
 			{
-				if (TrySpawnWither(a_ChunkInterface, World, a_BlockX + Coords[i].x, a_BlockY, a_BlockZ + Coords[i].z))
+				if (TrySpawnWither(a_ChunkInterface, a_WorldInterface, a_BlockX + Coords[i].x, a_BlockY, a_BlockZ + Coords[i].z))
 				{
 					break;
 				}
diff --git a/src/Blocks/BlockSign.h b/src/Blocks/BlockSign.h
index 9d6fede21..f5630bdb0 100644
--- a/src/Blocks/BlockSign.h
+++ b/src/Blocks/BlockSign.h
@@ -75,13 +75,13 @@ public:
 
 	virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) override
 	{
-		return (++a_Meta) & 0x0F;
+		return (a_Meta + 4) & 0x0f;
 	}
 
 
 	virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) override
 	{
-		return (--a_Meta) & 0x0F;
+		return (a_Meta + 12) & 0x0f;
 	}
 
 	virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) override
@@ -90,7 +90,7 @@ public:
 
 		//  There are 16 meta values which correspond to different directions.
 		//  These values are equated to angles on a circle; 0x08 = 180 degrees.
-		return (a_Meta < 0x08) ? 0x08 + a_Meta : 0x08 - a_Meta;
+		return (a_Meta < 0x08) ? (0x08 + a_Meta) : (0x08 - a_Meta);
 	}
 
 
diff --git a/src/Blocks/BlockSlab.h b/src/Blocks/BlockSlab.h
index 80841b094..6c861be86 100644
--- a/src/Blocks/BlockSlab.h
+++ b/src/Blocks/BlockSlab.h
@@ -80,6 +80,7 @@ public:
 		if (IsAnySlabType(a_ChunkInterface.GetBlock(a_BlockX, a_BlockY, a_BlockZ)))
 		{
 			a_BlockType = GetDoubleSlabType(m_BlockType);
+			a_BlockMeta = a_BlockMeta & 0x7;
 		}
 
 		return true;
@@ -123,6 +124,12 @@ public:
 		return E_BLOCK_AIR;
 	}
 	
+	
+	virtual NIBBLETYPE MetaMirrorXZ(NIBBLETYPE a_Meta) override
+	{
+		// Toggle the 4th bit - up / down:
+		return (a_Meta ^ 0x08);
+	}
 } ;
 
 
@@ -166,15 +173,6 @@ public:
 		ASSERT(!"Unhandled double slab type!");
 		return "";
 	}
-
-
-	virtual NIBBLETYPE MetaMirrorXZ(NIBBLETYPE a_Meta) override
-	{
-		NIBBLETYPE OtherMeta = a_Meta & 0x07;  // Contains unrelated meta data.
-
-		// 8th bit is up/down.  1 right-side-up, 0 is up-side-down.
-		return (a_Meta & 0x08) ? 0x00 + OtherMeta : 0x01 + OtherMeta;
-	}
 } ;
 
 
diff --git a/src/Blocks/BlockStone.h b/src/Blocks/BlockStone.h
index af4c6509a..cd5230f49 100644
--- a/src/Blocks/BlockStone.h
+++ b/src/Blocks/BlockStone.h
@@ -2,8 +2,6 @@
 #pragma once
 
 #include "BlockHandler.h"
-#include "../MersenneTwister.h"
-#include "../World.h"
 
 
 
diff --git a/src/Blocks/BlockTorch.h b/src/Blocks/BlockTorch.h
index 8ddec8de1..44c33c429 100644
--- a/src/Blocks/BlockTorch.h
+++ b/src/Blocks/BlockTorch.h
@@ -154,7 +154,11 @@ public:
 
 		if (
 			(BlockInQuestion == E_BLOCK_GLASS) ||
+			(BlockInQuestion == E_BLOCK_STAINED_GLASS) ||
 			(BlockInQuestion == E_BLOCK_FENCE) ||
+			(BlockInQuestion == E_BLOCK_SOULSAND) ||
+			(BlockInQuestion == E_BLOCK_MOB_SPAWNER) ||
+			(BlockInQuestion == E_BLOCK_END_PORTAL_FRAME) || // Actual vanilla behaviour
 			(BlockInQuestion == E_BLOCK_NETHER_BRICK_FENCE) ||
 			(BlockInQuestion == E_BLOCK_COBBLESTONE_WALL)
 			)
diff --git a/src/Blocks/BlockTripwire.h b/src/Blocks/BlockTripwire.h
new file mode 100644
index 000000000..3ab17bf4a
--- /dev/null
+++ b/src/Blocks/BlockTripwire.h
@@ -0,0 +1,32 @@
+
+#pragma once
+
+#include "BlockHandler.h"
+
+
+
+
+
+class cBlockTripwireHandler :
+	public cBlockHandler
+{
+public:
+	cBlockTripwireHandler(BLOCKTYPE a_BlockType)
+		: cBlockHandler(a_BlockType)
+	{
+	}
+
+	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
+	{
+		a_Pickups.push_back(cItem(E_ITEM_STRING, 1, 0));
+	}
+
+	virtual const char * GetStepSound(void) override
+	{
+		return "";
+	}
+};
+
+
+
+
diff --git a/src/Blocks/BlockTripwireHook.h b/src/Blocks/BlockTripwireHook.h
new file mode 100644
index 000000000..f849fb8ad
--- /dev/null
+++ b/src/Blocks/BlockTripwireHook.h
@@ -0,0 +1,82 @@
+#pragma once
+
+#include "BlockHandler.h"
+#include "MetaRotator.h"
+
+
+
+
+
+class cBlockTripwireHookHandler :
+	public cMetaRotator<cBlockHandler, 0x03, 0x02, 0x03, 0x00, 0x01>
+{
+public:
+	cBlockTripwireHookHandler(BLOCKTYPE a_BlockType)
+		: cMetaRotator<cBlockHandler, 0x03, 0x02, 0x03, 0x00, 0x01>(a_BlockType)
+	{
+	}
+
+	virtual bool GetPlacementBlockTypeMeta(
+		cChunkInterface & a_ChunkInterface, cPlayer * a_Player,
+		int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
+		int a_CursorX, int a_CursorY, int a_CursorZ,
+		BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
+		) override
+	{
+		a_BlockType = m_BlockType;
+
+		a_BlockMeta = DirectionToMetadata(a_BlockFace);
+
+		return true;
+	}
+
+	inline static NIBBLETYPE DirectionToMetadata(eBlockFace a_Direction)
+	{
+		switch (a_Direction)
+		{
+			case BLOCK_FACE_XM: return 0x1;
+			case BLOCK_FACE_XP: return 0x3;
+			case BLOCK_FACE_ZM: return 0x2;
+			case BLOCK_FACE_ZP: return 0x0;
+			default: ASSERT(!"Unhandled tripwire hook direction!"); return 0x0;
+		}
+	}
+
+	inline static eBlockFace MetadataToDirection(NIBBLETYPE a_Meta)
+	{
+		switch (a_Meta & 0x03)
+		{
+			case 0x1: return BLOCK_FACE_XM;
+			case 0x3: return BLOCK_FACE_XP;
+			case 0x2: return BLOCK_FACE_ZM;
+			case 0x0: return BLOCK_FACE_ZP;
+			default: ASSERT(!"Unhandled tripwire hook metadata!"); return BLOCK_FACE_NONE;
+		}
+	}
+
+	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
+	{
+		// Reset meta to 0
+		a_Pickups.push_back(cItem(E_BLOCK_TRIPWIRE_HOOK, 1, 0));
+	}
+
+	virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
+	{
+		NIBBLETYPE Meta;
+		a_Chunk.UnboundedRelGetBlockMeta(a_RelX, a_RelY, a_RelZ, Meta);
+
+		AddFaceDirection(a_RelX, a_RelY, a_RelZ, MetadataToDirection(Meta), true);
+		BLOCKTYPE BlockIsOn; a_Chunk.UnboundedRelGetBlockType(a_RelX, a_RelY, a_RelZ, BlockIsOn);
+
+		return (a_RelY > 0) && cBlockInfo::FullyOccupiesVoxel(BlockIsOn);
+	}
+
+	virtual const char * GetStepSound(void) override
+	{
+		return "step.wood";
+	}
+};
+
+
+
+
diff --git a/src/Blocks/WorldInterface.h b/src/Blocks/WorldInterface.h
index bfbb053d9..251b28d03 100644
--- a/src/Blocks/WorldInterface.h
+++ b/src/Blocks/WorldInterface.h
@@ -6,6 +6,12 @@
 
 class cItems;
 
+typedef cItemCallback<cBlockEntity> cBlockEntityCallback;
+
+
+
+
+
 class cWorldInterface
 {
 public:
@@ -29,6 +35,9 @@ public:
 	/** Spawns a mob of the specified type. Returns the mob's EntityID if recognized and spawned, <0 otherwise */
 	virtual int SpawnMob(double a_PosX, double a_PosY, double a_PosZ, cMonster::eType a_MonsterType) = 0;
 
+	/** Calls the callback for the block entity at the specified coords; returns false if there's no block entity at those coords, true if found */
+	virtual bool DoWithBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ, cBlockEntityCallback & a_Callback) = 0;
+
 	/** Sends the block on those coords to the player */
 	virtual void SendBlockTo(int a_BlockX, int a_BlockY, int a_BlockZ, cPlayer * a_Player) = 0;
 
@@ -37,4 +46,7 @@ public:
 
 	virtual void SetTimeOfDay(Int64 a_TimeOfDay) = 0;
 
+	/** Wakes up the simulators for the specified block */
+	virtual void WakeUpSimulators(int a_BlockX, int a_BlockY, int a_BlockZ) = 0;
+
 };