23 files changed, 530 insertions, 61 deletions

diff --git a/src/Blocks/BlockAnvil.h b/src/Blocks/BlockAnvil.h
index 93a796ef7..35a356678 100644
--- a/src/Blocks/BlockAnvil.h
+++ b/src/Blocks/BlockAnvil.h
@@ -23,6 +23,13 @@ public:
 	{
 		a_Pickups.push_back(cItem(E_BLOCK_ANVIL, 1, a_BlockMeta >> 2));
 	}
+
+
+	virtual void OnUse(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override
+	{
+		cWindow * Window = new cAnvilWindow(a_BlockX, a_BlockY, a_BlockZ);
+		a_Player->OpenWindow(Window);
+	}
 	
 	
 	virtual bool GetPlacementBlockTypeMeta(
diff --git a/src/Blocks/BlockBed.h b/src/Blocks/BlockBed.h
index 92804aaac..51e79b888 100644
--- a/src/Blocks/BlockBed.h
+++ b/src/Blocks/BlockBed.h
@@ -39,6 +39,13 @@ public:
 	}
 
 
+	virtual bool CanDirtGrowGrass(NIBBLETYPE a_Meta) override
+	{
+		return true;
+	}
+
+
+
 	// Bed specific helper functions
 	static NIBBLETYPE RotationToMetaData(double a_Rotation)
 	{
diff --git a/src/Blocks/BlockChest.h b/src/Blocks/BlockChest.h
index a1ded4c26..c9a769c75 100644
--- a/src/Blocks/BlockChest.h
+++ b/src/Blocks/BlockChest.h
@@ -56,6 +56,7 @@ public:
 			(Area.GetRelBlockType(2, 0, 1) == E_BLOCK_CHEST)
 		)
 		{
+			// FIXME: This is unreachable, as the condition is the same as the above one
 			a_BlockMeta = (yaw < 0) ? 4 : 5;
 			return true;
 		}
diff --git a/src/Blocks/BlockDirt.h b/src/Blocks/BlockDirt.h
index aa24b8668..2d4fccbac 100644
--- a/src/Blocks/BlockDirt.h
+++ b/src/Blocks/BlockDirt.h
@@ -35,8 +35,10 @@ public:
 		// Grass becomes dirt if there is something on top of it:
 		if (a_RelY < cChunkDef::Height - 1)
 		{
-			BLOCKTYPE Above = a_Chunk.GetBlock(a_RelX, a_RelY + 1, a_RelZ);
-			if ((!cBlockInfo::IsTransparent(Above) && !cBlockInfo::IsOneHitDig(Above)) || IsBlockWater(Above))
+			BLOCKTYPE Above;
+			NIBBLETYPE AboveMeta;
+			a_Chunk.GetBlockTypeMeta(a_RelX, a_RelY + 1, a_RelZ, Above, AboveMeta);
+			if (!cBlockInfo::GetHandler(Above)->CanDirtGrowGrass(AboveMeta))
 			{
 				a_Chunk.FastSetBlock(a_RelX, a_RelY, a_RelZ, E_BLOCK_DIRT, E_META_DIRT_NORMAL);
 				return;
@@ -77,7 +79,7 @@ public:
 			BLOCKTYPE AboveDest;
 			NIBBLETYPE AboveMeta;
 			Chunk->GetBlockTypeMeta(BlockX, BlockY + 1, BlockZ, AboveDest, AboveMeta);
-			if ((cBlockInfo::IsOneHitDig(AboveDest) || cBlockInfo::IsTransparent(AboveDest)) && !IsBlockWater(AboveDest))
+			if (cBlockInfo::GetHandler(AboveDest)->CanDirtGrowGrass(AboveMeta))
 			{
 				if (!cRoot::Get()->GetPluginManager()->CallHookBlockSpread((cWorld*) &a_WorldInterface, BlockX * cChunkDef::Width, BlockY, BlockZ * cChunkDef::Width, ssGrassSpread))
 				{
diff --git a/src/Blocks/BlockDoor.cpp b/src/Blocks/BlockDoor.cpp
index 479c68153..fb2d6f2dc 100644
--- a/src/Blocks/BlockDoor.cpp
+++ b/src/Blocks/BlockDoor.cpp
@@ -62,7 +62,7 @@ void cBlockDoorHandler::OnCancelRightClick(cChunkInterface & a_ChunkInterface, c
 	a_WorldInterface.SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, a_Player);
 	NIBBLETYPE Meta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
 	
-	if (Meta & 8)
+	if (Meta & 0x8)
 	{
 		// Current block is top of the door
 		a_WorldInterface.SendBlockTo(a_BlockX, a_BlockY - 1, a_BlockZ, a_Player);
diff --git a/src/Blocks/BlockDoor.h b/src/Blocks/BlockDoor.h
index 797fe484c..049c4a334 100644
--- a/src/Blocks/BlockDoor.h
+++ b/src/Blocks/BlockDoor.h
@@ -20,12 +20,12 @@ public:
 	virtual void OnUse(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override;
 	virtual void OnCancelRightClick(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace) override;
 	virtual const char * GetStepSound(void) override;
-	
+
 	virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) override;
 	virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta)  override;
 	virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta)  override;
 	virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta)  override;
-	
+
 	virtual bool GetPlacementBlockTypeMeta(
 		cChunkInterface & a_ChunkInterface, cPlayer * a_Player,
 		int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, 
@@ -52,7 +52,7 @@ public:
 		return true;
 	}
 
-	
+
 	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
 	{
 		a_Pickups.push_back(cItem((m_BlockType == E_BLOCK_WOODEN_DOOR) ? E_ITEM_WOODEN_DOOR : E_ITEM_IRON_DOOR, 1, 0));
@@ -77,8 +77,8 @@ public:
 	{
 		return ((a_RelY > 0) && (a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ) != E_BLOCK_AIR));
 	}
-	
-	
+
+
 	bool CanReplaceBlock(BLOCKTYPE a_BlockType)
 	{
 		switch (a_BlockType)
@@ -99,7 +99,7 @@ public:
 	}
 
 
-	/// Converts the player's yaw to placed door's blockmeta
+	/** Converts the player's yaw to placed door's blockmeta */
 	inline static NIBBLETYPE PlayerYawToMetaData(double a_Yaw)
 	{
 		ASSERT((a_Yaw >= -180) && (a_Yaw < 180));
@@ -111,67 +111,109 @@ public:
 		}
 		if ((a_Yaw >= 0) && (a_Yaw < 90))
 		{
-			return 0x0;
+			return 0x00;
 		}
 		else if ((a_Yaw >= 180) && (a_Yaw < 270))
 		{
-			return 0x2;
+			return 0x02;
 		}
 		else if ((a_Yaw >= 90) && (a_Yaw < 180))
 		{
-			return 0x1;
+			return 0x01;
 		}
 		else
 		{
-			return 0x3;
+			return 0x03;
 		}
 	}
 
 
-	/// Returns true if the specified blocktype is any kind of door
+	/** Returns true if the specified blocktype is any kind of door */
 	inline static bool IsDoor(BLOCKTYPE a_Block)
 	{
 		return (a_Block == E_BLOCK_WOODEN_DOOR) || (a_Block == E_BLOCK_IRON_DOOR);
 	}
 
 
-	/// Returns the metadata for the opposite door state (open vs closed)
-	static NIBBLETYPE ChangeStateMetaData(NIBBLETYPE a_MetaData)
+	static NIBBLETYPE IsOpen(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
 	{
-		return a_MetaData ^ 4;
+		NIBBLETYPE Meta = GetCompleteDoorMeta(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ);
+		return ((Meta & 0x04) != 0);
 	}
 
 
-	/// Changes the door at the specified coords from open to close or vice versa
-	static void ChangeDoor(cChunkInterface & a_ChunkInterface, int a_X, int a_Y, int a_Z)
+	/** Returns the complete meta composed from the both parts of the door as (TopMeta << 4) | BottomMeta
+	The coords may point to either part of the door.
+	The returned value has bit 3 (0x08) set iff the coords point to the top part of the door.
+	Fails gracefully for (invalid) doors on the world's top and bottom. */
+	static NIBBLETYPE GetCompleteDoorMeta(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
 	{
-		NIBBLETYPE OldMetaData = a_ChunkInterface.GetBlockMeta(a_X, a_Y, a_Z);
-
-		a_ChunkInterface.SetBlockMeta(a_X, a_Y, a_Z, ChangeStateMetaData(OldMetaData));
+		NIBBLETYPE Meta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
 
-		if (OldMetaData & 8)
+		if ((Meta & 0x08) != 0)
 		{
-			// Current block is top of the door
-			BLOCKTYPE  BottomBlock = a_ChunkInterface.GetBlock(a_X, a_Y - 1, a_Z);
-			NIBBLETYPE BottomMeta = a_ChunkInterface.GetBlockMeta(a_X, a_Y - 1, a_Z);
-
-			if (IsDoor(BottomBlock) && !(BottomMeta & 8))
+			// The coords are pointing at the top part of the door
+			if (a_BlockX > 0)
 			{
-				a_ChunkInterface.SetBlockMeta(a_X, a_Y - 1, a_Z, ChangeStateMetaData(BottomMeta));
+				NIBBLETYPE DownMeta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY - 1, a_BlockZ);
+				return (NIBBLETYPE) ((DownMeta & 0x07) | 0x08 | (Meta << 4));
 			}
+			// This is the top part of the door at the bottommost layer of the world, there's no bottom:
+			return (NIBBLETYPE) (0x08 | (Meta << 4));
 		}
 		else
 		{
-			// Current block is bottom of the door
-			BLOCKTYPE  TopBlock = a_ChunkInterface.GetBlock(a_X, a_Y + 1, a_Z);
-			NIBBLETYPE TopMeta = a_ChunkInterface.GetBlockMeta(a_X, a_Y + 1, a_Z);
+			// The coords are pointing at the bottom part of the door
+			if (a_BlockY < cChunkDef::Height - 1)
+			{
+				NIBBLETYPE UpMeta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY + 1, a_BlockZ);
+				return (NIBBLETYPE) (Meta | (UpMeta << 4));
+			}
+			// This is the bottom part of the door at the topmost layer of the world, there's no top:
+			return Meta;
+		}
+	}
 
-			if (IsDoor(TopBlock) && (TopMeta & 8))
+
+	/** Sets the door to the specified state. If the door is already in that state, does nothing. */
+	static void SetOpen(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ, bool a_Open)
+	{
+		BLOCKTYPE Block = a_ChunkInterface.GetBlock(a_BlockX, a_BlockY, a_BlockZ);
+		if (!IsDoor(Block))
+		{
+			return;
+		}
+
+		NIBBLETYPE Meta = GetCompleteDoorMeta(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ);
+		bool IsOpened = ((Meta & 0x04) != 0);
+		if (IsOpened == a_Open)
+		{
+			return;
+		}
+
+		// Change the door
+		NIBBLETYPE NewMeta = (Meta & 0x07) ^ 0x04;  // Flip the "IsOpen" bit (0x04)
+		if ((Meta & 0x08) == 0)
+		{
+			// The block is the bottom part of the door
+			a_ChunkInterface.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, NewMeta);
+		}
+		else
+		{
+			// The block is the top part of the door, set the meta to the corresponding top part
+			if (a_BlockY > 0)
 			{
-				a_ChunkInterface.SetBlockMeta(a_X, a_Y + 1, a_Z, ChangeStateMetaData(TopMeta));
+				a_ChunkInterface.SetBlockMeta(a_BlockX, a_BlockY - 1, a_BlockZ, NewMeta);
 			}
 		}
 	}
+
+
+	/** Changes the door at the specified coords from open to close or vice versa */
+	static void ChangeDoor(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
+	{
+		SetOpen(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, !IsOpen(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ));
+	}
 } ;
 
 
diff --git a/src/Blocks/BlockDropSpenser.h b/src/Blocks/BlockDropSpenser.h
index 88b61a418..e2b3039fd 100644
--- a/src/Blocks/BlockDropSpenser.h
+++ b/src/Blocks/BlockDropSpenser.h
@@ -5,7 +5,7 @@
 
 #pragma once
 
-#include "../Piston.h"
+#include "../Blocks/BlockPiston.h"
 #include "MetaRotator.h"
 
 
@@ -32,7 +32,7 @@ public:
 		a_BlockType = m_BlockType;
 		
 		// FIXME: Do not use cPiston class for dispenser placement!
-		a_BlockMeta = cPiston::RotationPitchToMetaData(a_Player->GetYaw(), a_Player->GetPitch());
+		a_BlockMeta = cBlockPistonHandler::RotationPitchToMetaData(a_Player->GetYaw(), a_Player->GetPitch());
 		return true;
 	}
 	
diff --git a/src/Blocks/BlockEnchantmentTable.h b/src/Blocks/BlockEnchantmentTable.h
new file mode 100644
index 000000000..81d2cb9a0
--- /dev/null
+++ b/src/Blocks/BlockEnchantmentTable.h
@@ -0,0 +1,37 @@
+
+#pragma once
+
+#include "BlockHandler.h"
+#include "../UI/Window.h"
+#include "../Entities/Player.h"
+
+
+
+
+
+class cBlockEnchantmentTableHandler :
+	public cBlockHandler
+{
+public:
+	cBlockEnchantmentTableHandler(BLOCKTYPE a_BlockType)
+		: cBlockHandler(a_BlockType)
+	{
+	}
+
+
+	virtual void OnUse(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override
+	{
+		cWindow * Window = new cEnchantingWindow(a_BlockX, a_BlockY, a_BlockZ);
+		a_Player->OpenWindow(Window);
+	}
+
+
+	virtual bool IsUseable(void) override
+	{
+		return true;
+	}
+};
+
+
+
+
diff --git a/src/Blocks/BlockFarmland.h b/src/Blocks/BlockFarmland.h
index b720ccd14..3dd5bcd1d 100644
--- a/src/Blocks/BlockFarmland.h
+++ b/src/Blocks/BlockFarmland.h
@@ -52,9 +52,9 @@ public:
 				return;
 			}
 
-			int NumBlocks = Area.GetBlockCount();
+			size_t NumBlocks = Area.GetBlockCount();
 			BLOCKTYPE * BlockTypes = Area.GetBlockTypes();
-			for (int i = 0; i < NumBlocks; i++)
+			for (size_t i = 0; i < NumBlocks; i++)
 			{
 				if (
 					(BlockTypes[i] == E_BLOCK_WATER) ||
diff --git a/src/Blocks/BlockFire.h b/src/Blocks/BlockFire.h
index c8f158e7e..f9f32eb50 100644
--- a/src/Blocks/BlockFire.h
+++ b/src/Blocks/BlockFire.h
@@ -68,7 +68,6 @@ public:
 		{
 			return 0;
 		}
-
 		
 		for (int newY = Y + 1; newY < cChunkDef::Height; newY++)
 		{
@@ -84,7 +83,7 @@ public:
 				// This is because the frame is a solid obsidian pillar
 				if ((MaxY != 0) && (newY == Y + 1))
 				{
-					return EvaluatePortalBorder(X, newY, Z, MaxY, a_ChunkInterface);
+					return EvaluatePortalBorder(X, newY, Z, MaxY, a_ChunkInterface) ? -1 /* -1 = found a frame */ : 0;
 				}
 				else
 				{
@@ -99,18 +98,18 @@ public:
 	}
 
 	/// Evaluates if coords have a valid border on top, based on MaxY
-	int EvaluatePortalBorder(int X, int FoundObsidianY, int Z, int MaxY, cChunkInterface & a_ChunkInterface)
+	bool EvaluatePortalBorder(int X, int FoundObsidianY, int Z, int MaxY, cChunkInterface & a_ChunkInterface)
 	{
 		for (int checkBorder = FoundObsidianY + 1; checkBorder <= MaxY - 1; checkBorder++) // FoundObsidianY + 1: FoundObsidianY has already been checked in FindObsidianCeiling; MaxY - 1: portal doesn't need corners
 		{
 			if (a_ChunkInterface.GetBlock(X, checkBorder, Z) != E_BLOCK_OBSIDIAN)
 			{
 				// Base obsidian, base + 1 obsidian, base + x NOT obsidian -> not complete portal
-				return 0;
+				return false;
 			}
 		}
 		// Everything was obsidian, found a border!
-		return -1; // Return -1 for a frame border
+		return true;
 	}
 
 	/// Finds entire frame in any direction with the coordinates of a base block and fills hole with nether portal (START HERE)
@@ -169,7 +168,7 @@ public:
 			{
 				return false; // Not valid slice, no portal can be formed
 			}
-		} XZP = X1 - 1; // Set boundary of frame interior, note that for some reason, the loop of X and the loop of Z go to different numbers, hence -1 here and -2 there
+		} XZP = X1 - 1; // Set boundary of frame interior
 		for (; ((a_ChunkInterface.GetBlock(X2, Y, Z) == E_BLOCK_OBSIDIAN) || (a_ChunkInterface.GetBlock(X2, Y + 1, Z) == E_BLOCK_OBSIDIAN)); X2--) // Go the other direction (XM)
 		{
 			int Value = FindObsidianCeiling(X2, Y, Z, a_ChunkInterface, MaxY);
@@ -199,13 +198,13 @@ public:
 			if ((Value == -1) || (ValueTwo == -1))
 			{
 				FoundFrameZP = true;
-				continue;
+				break;
 			}
 			else if ((Value != MaxY) && (ValueTwo != MaxY))
 			{
 				return false;
 			}
-		} XZP = Z1 - 2;
+		} XZP = Z1 - 1;
 		for (; ((a_ChunkInterface.GetBlock(X, Y, Z2) == E_BLOCK_OBSIDIAN) || (a_ChunkInterface.GetBlock(X, Y + 1, Z2) == E_BLOCK_OBSIDIAN)); Z2--)
 		{
 			int Value = FindObsidianCeiling(X, Y, Z2, a_ChunkInterface, MaxY);
@@ -213,13 +212,13 @@ public:
 			if ((Value == -1) || (ValueTwo == -1))
 			{
 				FoundFrameZM = true;
-				continue;
+				break;
 			}
 			else if ((Value != MaxY) && (ValueTwo != MaxY))
 			{
 				return false;
 			}
-		} XZM = Z2 + 2;
+		} XZM = Z2 + 1;
 		return (FoundFrameZP && FoundFrameZM);
 	}
 };
diff --git a/src/Blocks/BlockFluid.h b/src/Blocks/BlockFluid.h
index d486d642d..d0c4ea55b 100644
--- a/src/Blocks/BlockFluid.h
+++ b/src/Blocks/BlockFluid.h
@@ -49,6 +49,12 @@ public:
 		}
 		super::Check(a_ChunkInterface, a_PluginInterface, a_RelX, a_RelY, a_RelZ, a_Chunk);
 	}
+
+
+	virtual bool CanDirtGrowGrass(NIBBLETYPE a_Meta) override
+	{
+		return false;
+	}
 } ;
 
 
diff --git a/src/Blocks/BlockFurnace.h b/src/Blocks/BlockFurnace.h
index a7a807957..74582c3b3 100644
--- a/src/Blocks/BlockFurnace.h
+++ b/src/Blocks/BlockFurnace.h
@@ -3,7 +3,7 @@
 
 #include "BlockEntity.h"
 #include "../World.h"
-#include "../Piston.h"
+#include "../Blocks/BlockPiston.h"
 #include "MetaRotator.h"
 
 
@@ -35,7 +35,7 @@ public:
 		a_BlockType = m_BlockType;
 		
 		// FIXME: Do not use cPiston class for furnace placement!
-		a_BlockMeta = cPiston::RotationPitchToMetaData(a_Player->GetYaw(), 0);
+		a_BlockMeta = cBlockPistonHandler::RotationPitchToMetaData(a_Player->GetYaw(), 0);
 		
 		return true;
 	}
diff --git a/src/Blocks/BlockHandler.cpp b/src/Blocks/BlockHandler.cpp
index 4a29ff628..304e35e84 100644
--- a/src/Blocks/BlockHandler.cpp
+++ b/src/Blocks/BlockHandler.cpp
@@ -25,6 +25,7 @@
 #include "BlockDirt.h"
 #include "BlockDoor.h"
 #include "BlockDropSpenser.h"
+#include "BlockEnchantmentTable.h"
 #include "BlockEnderchest.h"
 #include "BlockEntity.h"
 #include "BlockFarmland.h"
@@ -119,6 +120,7 @@ cBlockHandler * cBlockHandler::CreateBlockHandler(BLOCKTYPE a_BlockType)
 		case E_BLOCK_DOUBLE_WOODEN_SLAB:    return new cBlockDoubleSlabHandler      (a_BlockType);
 		case E_BLOCK_DROPPER:               return new cBlockDropSpenserHandler     (a_BlockType);
 		case E_BLOCK_EMERALD_ORE:           return new cBlockOreHandler             (a_BlockType);
+		case E_BLOCK_ENCHANTMENT_TABLE:     return new cBlockEnchantmentTableHandler(a_BlockType);
 		case E_BLOCK_ENDER_CHEST:           return new cBlockEnderchestHandler      (a_BlockType);
 		case E_BLOCK_FARMLAND:              return new cBlockFarmlandHandler        (           );
 		case E_BLOCK_FENCE_GATE:            return new cBlockFenceGateHandler       (a_BlockType);
@@ -398,6 +400,15 @@ bool cBlockHandler::CanBeAt(cChunkInterface & a_ChunkInterface, int a_BlockX, in
 
 
 
+bool cBlockHandler::CanDirtGrowGrass(NIBBLETYPE a_Meta)
+{
+	return ((cBlockInfo::IsTransparent(m_BlockType)) || (cBlockInfo::IsOneHitDig(m_BlockType)));
+}
+
+
+
+
+
 bool cBlockHandler::IsUseable()
 {
 	return false;
diff --git a/src/Blocks/BlockHandler.h b/src/Blocks/BlockHandler.h
index 3a3efb3cc..fb6cae729 100644
--- a/src/Blocks/BlockHandler.h
+++ b/src/Blocks/BlockHandler.h
@@ -85,6 +85,9 @@ public:
 	
 	/// Checks if the block can stay at the specified relative coords in the chunk
 	virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk);
+
+	/** Can the dirt under this block grow to grass? */
+	virtual bool CanDirtGrowGrass(NIBBLETYPE a_Meta);
 	
 	/** Checks if the block can be placed at this point.
 	Default: CanBeAt(...) 
diff --git a/src/Blocks/BlockLeaves.h b/src/Blocks/BlockLeaves.h
index 8af14686e..495e849fa 100644
--- a/src/Blocks/BlockLeaves.h
+++ b/src/Blocks/BlockLeaves.h
@@ -16,6 +16,7 @@
 	{ \
 		case E_BLOCK_LEAVES: a_Area.SetBlockType(x, y, z, (BLOCKTYPE)(E_BLOCK_SPONGE + i + 1)); break; \
 		case E_BLOCK_LOG: return true; \
+		case E_BLOCK_NEW_LEAVES: a_Area.SetBlockType(x, y, z, (BLOCKTYPE)(E_BLOCK_SPONGE + i + 1)); break; \
 		case E_BLOCK_NEW_LOG: return true; \
 	}
 
@@ -137,14 +138,14 @@ bool HasNearLog(cBlockArea & a_Area, int a_BlockX, int a_BlockY, int a_BlockZ)
 {
 	// Filter the blocks into a {leaves, log, other (air)} set:
 	BLOCKTYPE * Types = a_Area.GetBlockTypes();
-	for (int i = a_Area.GetBlockCount() - 1; i > 0; i--)
+	for (size_t i = a_Area.GetBlockCount() - 1; i > 0; i--)
 	{
 		switch (Types[i])
 		{
-			case E_BLOCK_NEW_LEAVES:
-			case E_BLOCK_NEW_LOG:
 			case E_BLOCK_LEAVES:
 			case E_BLOCK_LOG:
+			case E_BLOCK_NEW_LEAVES:
+			case E_BLOCK_NEW_LOG:
 			{
 				break;
 			}
diff --git a/src/Blocks/BlockMobHead.h b/src/Blocks/BlockMobHead.h
index acd1c88fb..9855574ad 100644
--- a/src/Blocks/BlockMobHead.h
+++ b/src/Blocks/BlockMobHead.h
@@ -46,8 +46,30 @@ public:
 			bool IsWither(void) const { return m_IsWither; }
 
 			void Reset(void) { m_IsWither = false; }
+
 		} CallbackA, CallbackB;
 
+		class cPlayerCallback : public cPlayerListCallback
+		{
+			Vector3f m_Pos;
+
+			virtual bool Item(cPlayer * a_Player)
+			{
+				// TODO 2014-05-21 xdot: Vanilla minecraft uses an AABB check instead of a radius one
+				double Dist = (a_Player->GetPosition() - m_Pos).Length();
+				if (Dist < 50.0)
+				{
+					// If player is close, award achievement
+					a_Player->AwardAchievement(achSpawnWither);
+				}
+				return false;
+			}
+
+		public:
+			cPlayerCallback(const Vector3f & a_Pos) : m_Pos(a_Pos) {}
+
+		} PlayerCallback(Vector3f((float)a_BlockX, (float)a_BlockY, (float)a_BlockZ));
+
 		a_World->DoWithMobHeadAt(a_BlockX, a_BlockY, a_BlockZ, CallbackA);
 
 		if (!CallbackA.IsWither())
@@ -86,6 +108,9 @@ public:
 			// Spawn the wither:
 			a_World->SpawnMob(a_BlockX + 0.5, a_BlockY - 2, a_BlockZ + 0.5, cMonster::mtWither);
 
+			// Award Achievement
+			a_World->ForEachPlayer(PlayerCallback);
+
 			return true;
 		}
 
@@ -113,6 +138,9 @@ public:
 			// Spawn the wither:
 			a_World->SpawnMob(a_BlockX + 0.5, a_BlockY - 2, a_BlockZ + 0.5, cMonster::mtWither);
 
+			// Award Achievement
+			a_World->ForEachPlayer(PlayerCallback);
+
 			return true;
 		}
 
diff --git a/src/Blocks/BlockPiston.cpp b/src/Blocks/BlockPiston.cpp
index 542eb33b5..faf639312 100644
--- a/src/Blocks/BlockPiston.cpp
+++ b/src/Blocks/BlockPiston.cpp
@@ -4,14 +4,14 @@
 #include "../Item.h"
 #include "../World.h"
 #include "../Entities/Player.h"
-#include "../Piston.h"
+#include "BlockInServerPluginInterface.h"
 
 
 
 
 
 #define AddPistonDir(x, y, z, dir, amount) \
-	switch (dir) \
+	switch (dir & 0x07) \
 	{ \
 		case 0: (y) -= (amount); break; \
 		case 1: (y) += (amount); break; \
@@ -19,8 +19,16 @@
 		case 3: (z) += (amount); break; \
 		case 4: (x) -= (amount); break; \
 		case 5: (x) += (amount); break; \
+		default: \
+		{ \
+			LOGWARNING("%s: invalid direction %d, ignoring", __FUNCTION__, dir & 0x07); \
+			break; \
+		} \
 	}
 
+#define PISTON_TICK_DELAY 1
+#define PISTON_MAX_PUSH_DISTANCE 12
+
 
 
 
@@ -40,7 +48,7 @@ void cBlockPistonHandler::OnDestroyed(cChunkInterface & a_ChunkInterface, cWorld
 	int newX = a_BlockX;
 	int newY = a_BlockY;
 	int newZ = a_BlockZ;
-	AddPistonDir(newX, newY, newZ, OldMeta & ~(8), 1);
+	AddPistonDir(newX, newY, newZ, OldMeta, 1);
 
 	if (a_ChunkInterface.GetBlock(newX, newY, newZ) == E_BLOCK_PISTON_EXTENSION)
 	{
@@ -60,7 +68,7 @@ bool cBlockPistonHandler::GetPlacementBlockTypeMeta(
 )
 {
 	a_BlockType = m_BlockType;
-	a_BlockMeta = cPiston::RotationPitchToMetaData(a_Player->GetYaw(), a_Player->GetPitch());
+	a_BlockMeta = RotationPitchToMetaData(a_Player->GetYaw(), a_Player->GetPitch());
 	return true;
 }
 
@@ -68,6 +76,165 @@ bool cBlockPistonHandler::GetPlacementBlockTypeMeta(
 
 
 
+int cBlockPistonHandler::FirstPassthroughBlock(int a_PistonX, int a_PistonY, int a_PistonZ, NIBBLETYPE pistonmeta, cWorld * a_World)
+{
+	// Examine each of the 12 blocks ahead of the piston:
+	for (int ret = 0; ret < PISTON_MAX_PUSH_DISTANCE; ret++)
+	{
+		BLOCKTYPE currBlock;
+		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))
+		{
+			// This block breaks when pushed, extend up to here
+			return ret;
+		}
+		if (!CanPush(currBlock, currMeta))
+		{
+			// This block cannot be pushed at all, the piston can't extend
+			return -1;
+		}
+	}
+	// There is no space for the blocks to move, piston can't extend
+	return -1;
+}
+
+
+
+
+
+void cBlockPistonHandler::ExtendPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World)
+{
+	BLOCKTYPE pistonBlock;
+	NIBBLETYPE pistonMeta;
+	a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta);
+
+	if (IsExtended(pistonMeta))
+	{
+		// Already extended, bail out
+		return;
+	}
+
+	int dist = FirstPassthroughBlock(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, a_World);
+	if (dist < 0)
+	{
+		// FirstPassthroughBlock says piston can't push anything, bail out
+		return;
+	}
+
+	a_World->BroadcastBlockAction(a_BlockX, a_BlockY, a_BlockZ, 0, pistonMeta, pistonBlock);
+	a_World->BroadcastSoundEffect("tile.piston.out", a_BlockX * 8, a_BlockY * 8, a_BlockZ * 8, 0.5f, 0.7f);
+
+	// Drop the breakable block in the line, if appropriate:
+	AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, dist + 1);  // "a_Block" now at the breakable / empty block
+	BLOCKTYPE currBlock;
+	NIBBLETYPE currMeta;
+	a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, currBlock, currMeta);
+	if (currBlock != E_BLOCK_AIR)
+	{
+		cBlockHandler * Handler = BlockHandler(currBlock);
+		if (Handler->DoesDropOnUnsuitable())
+		{
+			cChunkInterface ChunkInterface(a_World->GetChunkMap());
+			cBlockInServerPluginInterface PluginInterface(*a_World);
+			Handler->DropBlock(ChunkInterface, *a_World, PluginInterface, NULL, a_BlockX, a_BlockY, a_BlockZ);
+		}
+	}
+
+	// Push blocks, from the furthest to the nearest:
+	int oldx = a_BlockX, oldy = a_BlockY, oldz = a_BlockZ;
+	NIBBLETYPE currBlockMeta;
+	std::vector<Vector3i> ScheduledBlocks;
+	ScheduledBlocks.reserve(PISTON_MAX_PUSH_DISTANCE);
+
+	for (int i = dist + 1; i > 1; i--)
+	{
+		AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, -1);
+		a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, currBlock, currBlockMeta);
+		a_World->SetBlock(oldx, oldy, oldz, currBlock, currBlockMeta, false);
+		ScheduledBlocks.push_back(Vector3i(oldx, oldy, oldz));
+		oldx = a_BlockX;
+		oldy = a_BlockY;
+		oldz = a_BlockZ;
+	}
+
+	int extx = a_BlockX;
+	int exty = a_BlockY;
+	int extz = a_BlockZ;
+	ScheduledBlocks.push_back(Vector3i(extx, exty, extz));
+	AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, -1);
+	// "a_Block" now at piston body, "ext" at future extension
+
+	a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta | 0x8);
+	a_World->SetBlock(extx, exty, extz, E_BLOCK_PISTON_EXTENSION, pistonMeta | (IsSticky(pistonBlock) ? 8 : 0), false);
+	a_World->ScheduleTask(PISTON_TICK_DELAY, new cWorld::cTaskSendBlockToAllPlayers(ScheduledBlocks));
+}
+
+
+
+
+
+void cBlockPistonHandler::RetractPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World)
+{
+	BLOCKTYPE pistonBlock;
+	NIBBLETYPE pistonMeta;
+	a_World->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta);
+
+	if (!IsExtended(pistonMeta))
+	{
+		// Already retracted, bail out
+		return;
+	}
+
+	// Check the extension:
+	AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, 1);
+	if (a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ) != E_BLOCK_PISTON_EXTENSION)
+	{
+		LOGD("%s: Piston without an extension - still extending, or just in an invalid state?", __FUNCTION__);
+		return;
+	}
+
+	AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, -1);
+	a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, pistonBlock, pistonMeta & ~(8));
+	a_World->BroadcastBlockAction(a_BlockX, a_BlockY, a_BlockZ, 1, pistonMeta & ~(8), pistonBlock);
+	a_World->BroadcastSoundEffect("tile.piston.in", a_BlockX * 8, a_BlockY * 8, a_BlockZ * 8, 0.5f, 0.7f);
+	AddPistonDir(a_BlockX, a_BlockY, a_BlockZ, pistonMeta, 1);
+
+	// Retract the extension, pull block if appropriate
+	if (IsSticky(pistonBlock))
+	{
+		int tempx = a_BlockX, tempy = a_BlockY, tempz = a_BlockZ;
+		AddPistonDir(tempx, tempy, tempz, pistonMeta, 1);
+		BLOCKTYPE tempBlock;
+		NIBBLETYPE tempMeta;
+		a_World->GetBlockTypeMeta(tempx, tempy, tempz, tempBlock, tempMeta);
+		if (CanPull(tempBlock, tempMeta))
+		{
+			// Pull the block
+			a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, tempBlock, tempMeta, false);
+			a_World->SetBlock(tempx, tempy, tempz, E_BLOCK_AIR, 0, false);
+
+			std::vector<Vector3i> ScheduledBlocks;
+			ScheduledBlocks.push_back(Vector3i(a_BlockX, a_BlockY, a_BlockZ));
+			ScheduledBlocks.push_back(Vector3i(tempx, tempy, tempz));
+			a_World->ScheduleTask(PISTON_TICK_DELAY + 1, new cWorld::cTaskSendBlockToAllPlayers(ScheduledBlocks));
+			return;
+		}
+	}
+	
+	// Retract without pulling
+	a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0, false);
+
+	std::vector<Vector3i> ScheduledBlocks;
+	ScheduledBlocks.push_back(Vector3i(a_BlockX, a_BlockY, a_BlockZ));
+	a_World->ScheduleTask(PISTON_TICK_DELAY + 1, new cWorld::cTaskSendBlockToAllPlayers(ScheduledBlocks));
+}
+
+
+
+
+
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cBlockPistonHeadHandler:
 
@@ -87,7 +254,7 @@ void cBlockPistonHeadHandler::OnDestroyedByPlayer(cChunkInterface & a_ChunkInter
 	int newX = a_BlockX;
 	int newY = a_BlockY;
 	int newZ = a_BlockZ;
-	AddPistonDir(newX, newY, newZ, OldMeta & ~(8), -1);
+	AddPistonDir(newX, newY, newZ, OldMeta, -1);
 
 	BLOCKTYPE Block = a_ChunkInterface.GetBlock(newX, newY, newZ);
 	if ((Block == E_BLOCK_STICKY_PISTON) || (Block == E_BLOCK_PISTON))
diff --git a/src/Blocks/BlockPiston.h b/src/Blocks/BlockPiston.h
index 7632b5e5a..e6fa48e54 100644
--- a/src/Blocks/BlockPiston.h
+++ b/src/Blocks/BlockPiston.h
@@ -21,6 +21,138 @@ public:
 		int a_CursorX, int a_CursorY, int a_CursorZ,
 		BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
 	) override;
+
+	static NIBBLETYPE RotationPitchToMetaData(double a_Rotation, double a_Pitch)
+	{
+		if (a_Pitch >= 50)
+		{
+			return 0x1;
+		}
+		else if (a_Pitch <= -50)
+		{
+			return 0x0;
+		}
+		else
+		{
+			a_Rotation += 90 + 45;  // So its not aligned with axis
+
+			if (a_Rotation > 360)
+			{
+				a_Rotation -= 360;
+			}
+			if ((a_Rotation >= 0) && (a_Rotation < 90))
+			{
+				return 0x4;
+			}
+			else if ((a_Rotation >= 180) && (a_Rotation < 270))
+			{
+				return 0x5;
+			}
+			else if ((a_Rotation >= 90) && (a_Rotation < 180))
+			{
+				return 0x2;
+			}
+			else
+			{
+				return 0x3;
+			}
+		}
+	}
+
+	static eBlockFace MetaDataToDirection(NIBBLETYPE a_MetaData)
+	{
+		switch (a_MetaData)
+		{
+			case 0x0: return BLOCK_FACE_YM;
+			case 0x1: return BLOCK_FACE_YP;
+			case 0x2: return BLOCK_FACE_ZM;
+			case 0x3: return BLOCK_FACE_ZP;
+			case 0x4: return BLOCK_FACE_XM;
+			case 0x5: return BLOCK_FACE_XP;
+			default:
+			{
+				ASSERT(!"Invalid Metadata");
+				return BLOCK_FACE_NONE;
+			}
+		}
+	}	
+
+	static void ExtendPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
+	static void RetractPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
+
+private:
+
+	/// Returns true if the piston (specified by blocktype) is a sticky piston
+	static inline bool IsSticky(BLOCKTYPE a_BlockType) { return (a_BlockType == E_BLOCK_STICKY_PISTON); }
+
+	/// Returns true if the piston (with the specified meta) is extended
+	static inline bool IsExtended(NIBBLETYPE a_PistonMeta) { return ((a_PistonMeta & 0x8) != 0x0); }
+
+	/// Returns true if the specified block can be pushed by a piston (and left intact)
+	static inline bool CanPush(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
+	{
+		switch (a_BlockType)
+		{
+			case E_BLOCK_ANVIL:
+			case E_BLOCK_BED:
+			case E_BLOCK_BEDROCK:
+			case E_BLOCK_BREWING_STAND:
+			case E_BLOCK_CHEST:
+			case E_BLOCK_COMMAND_BLOCK:
+			case E_BLOCK_DISPENSER:
+			case E_BLOCK_DROPPER:
+			case E_BLOCK_ENCHANTMENT_TABLE:
+			case E_BLOCK_END_PORTAL:
+			case E_BLOCK_END_PORTAL_FRAME:
+			case E_BLOCK_FURNACE:
+			case E_BLOCK_LIT_FURNACE:
+			case E_BLOCK_HOPPER:
+			case E_BLOCK_JUKEBOX:
+			case E_BLOCK_MOB_SPAWNER:
+			case E_BLOCK_NETHER_PORTAL:
+			case E_BLOCK_NOTE_BLOCK:
+			case E_BLOCK_OBSIDIAN:
+			case E_BLOCK_PISTON_EXTENSION:
+			{
+				return false;
+			}
+			case E_BLOCK_STICKY_PISTON:
+			case E_BLOCK_PISTON:
+			{
+				// A piston can only be pushed if retracted:
+				return !IsExtended(a_BlockMeta);
+			}
+		}
+		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))
+		{
+			return false; // CanBreakPush returns true, but we need false to prevent pulling
+		}
+		
+		return CanPush(a_BlockType, a_BlockMeta);
+	}
+
+	/// Returns how many blocks the piston has to push (where the first free space is); < 0 when unpushable
+	static int FirstPassthroughBlock(int a_PistonX, int a_PistonY, int a_PistonZ, NIBBLETYPE a_PistonMeta, cWorld * a_World);
 } ;
 
 
@@ -40,7 +172,7 @@ public:
 	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
 	{
 		// No pickups
-		// Also with 1.7, the item forms of these tecnical blocks have been removed, so giving someone this will crash their client...
+		// Also with 1.7, the item forms of these technical blocks have been removed, so giving someone this will crash their client...
 	}
 } ;
 
diff --git a/src/Blocks/BlockPortal.h b/src/Blocks/BlockPortal.h
index 21bcbdeea..3b8030028 100644
--- a/src/Blocks/BlockPortal.h
+++ b/src/Blocks/BlockPortal.h
@@ -2,6 +2,7 @@
 #pragma once
 
 #include "BlockHandler.h"
+#include "../Mobs/Monster.h"
 
 
 
@@ -38,6 +39,19 @@ public:
 		return; // No pickups
 	}
 
+	virtual void OnUpdate(cChunkInterface & cChunkInterface, cWorldInterface & a_WorldInterface, cBlockPluginInterface & a_PluginInterface, cChunk & a_Chunk, int a_RelX, int a_RelY, int a_RelZ) override
+	{
+		cFastRandom Random;
+		if (Random.NextInt(2000) != 0)
+		{
+			return;
+		}
+
+		int PosX = a_Chunk.GetPosX() * 16 + a_RelX;
+		int PosZ = a_Chunk.GetPosZ() * 16 + a_RelZ;
+
+		a_WorldInterface.SpawnMob(PosX, a_RelY, PosZ, cMonster::mtZombiePigman);
+	}
 
 	virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
 	{
diff --git a/src/Blocks/BlockRail.h b/src/Blocks/BlockRail.h
index ad78d290a..358b5ca11 100644
--- a/src/Blocks/BlockRail.h
+++ b/src/Blocks/BlockRail.h
@@ -141,7 +141,7 @@ public:
 		NIBBLETYPE Meta = 0;
 		char RailsCnt = 0;
 		bool Neighbors[8]; // 0 - EAST, 1 - WEST, 2 - NORTH, 3 - SOUTH, 4 - EAST UP, 5 - WEST UP, 6 - NORTH UP, 7 - SOUTH UP
-		memset(Neighbors, false, sizeof(Neighbors));
+		memset(Neighbors, 0, sizeof(Neighbors));
 		Neighbors[0] = (IsUnstable(a_ChunkInterface, a_BlockX + 1, a_BlockY, a_BlockZ) || !IsNotConnected(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_EAST, E_PURE_DOWN));
 		Neighbors[1] = (IsUnstable(a_ChunkInterface, a_BlockX - 1, a_BlockY, a_BlockZ) || !IsNotConnected(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_WEST, E_PURE_DOWN));
 		Neighbors[2] = (IsUnstable(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ - 1) || !IsNotConnected(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_NORTH, E_PURE_DOWN));
diff --git a/src/Blocks/BlockSlab.h b/src/Blocks/BlockSlab.h
index 76f5ed0e7..80841b094 100644
--- a/src/Blocks/BlockSlab.h
+++ b/src/Blocks/BlockSlab.h
@@ -97,6 +97,12 @@ public:
 		return "";
 	}
 
+
+	virtual bool CanDirtGrowGrass(NIBBLETYPE a_Meta) override
+	{
+		return ((a_Meta & 0x8) != 0);
+	}
+
 	
 	/// Returns true if the specified blocktype is one of the slabs handled by this handler
 	static bool IsAnySlabType(BLOCKTYPE a_BlockType)
diff --git a/src/Blocks/BlockStairs.h b/src/Blocks/BlockStairs.h
index 09ff254a6..a49fda5ae 100644
--- a/src/Blocks/BlockStairs.h
+++ b/src/Blocks/BlockStairs.h
@@ -77,6 +77,11 @@ public:
 		// Reset meta to 0
 		a_Pickups.push_back(cItem(m_BlockType, 1, 0));
 	}
+
+	virtual bool CanDirtGrowGrass(NIBBLETYPE a_Meta) override
+	{
+		return true;
+	}
 	
 	static NIBBLETYPE RotationToMetaData(double a_Rotation)
 	{
diff --git a/src/Blocks/CMakeLists.txt b/src/Blocks/CMakeLists.txt
index 082ff41ac..4b8c745ad 100644
--- a/src/Blocks/CMakeLists.txt
+++ b/src/Blocks/CMakeLists.txt
@@ -6,6 +6,7 @@ include_directories ("${PROJECT_SOURCE_DIR}/../")
 
 file(GLOB SOURCE
     "*.cpp"
+    "*.h"
 )
 
 add_library(Blocks ${SOURCE})