1 files changed, 175 insertions, 0 deletions

diff --git a/src/Blocks/BlockDoor.h b/src/Blocks/BlockDoor.h
new file mode 100644
index 000000000..03a79d47d
--- /dev/null
+++ b/src/Blocks/BlockDoor.h
@@ -0,0 +1,175 @@
+
+#pragma once
+
+#include "BlockHandler.h"
+#include "../World.h"
+#include "../Entities/Player.h"
+
+
+
+
+
+class cBlockDoorHandler :
+	public cBlockHandler
+{
+public:
+	cBlockDoorHandler(BLOCKTYPE a_BlockType);
+
+	virtual void OnDestroyed(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ) override;
+	virtual void OnUse(cWorld * a_World, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override;
+	virtual const char * GetStepSound(void) override;
+	
+	
+	virtual bool GetPlacementBlockTypeMeta(
+		cWorld * a_World, cPlayer * a_Player,
+		int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, 
+		int a_CursorX, int a_CursorY, int a_CursorZ,
+		BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
+	) override
+	{
+		// If clicking a bottom face, place the door one block lower:
+		if (a_BlockFace == BLOCK_FACE_BOTTOM)
+		{
+			a_BlockY--;
+		}
+
+		if (
+			!CanReplaceBlock(a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ)) ||
+			!CanReplaceBlock(a_World->GetBlock(a_BlockX, a_BlockY + 1, a_BlockZ))
+		)
+		{
+			return false;
+		}
+		
+		a_BlockType = m_BlockType;
+		a_BlockMeta = PlayerYawToMetaData(a_Player->GetRotation());
+		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));
+	}
+
+
+	virtual void OnPlacedByPlayer(
+		cWorld * a_World, cPlayer * a_Player,
+		int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace,
+		int a_CursorX, int a_CursorY, int a_CursorZ,
+		BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta
+	) override;
+
+
+	virtual bool IsUseable(void) override
+	{
+		return true;
+	}
+
+
+	virtual bool CanBeAt(int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
+	{
+		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)
+		{
+			case E_BLOCK_AIR:
+			case E_BLOCK_TALL_GRASS:
+			case E_BLOCK_WATER:
+			case E_BLOCK_STATIONARY_WATER:
+			case E_BLOCK_LAVA:
+			case E_BLOCK_STATIONARY_LAVA:
+			case E_BLOCK_SNOW:
+			case E_BLOCK_FIRE:
+			{
+				return true;
+			}
+		}
+		return false;
+	}
+
+
+	/// Converts the player's yaw to placed door's blockmeta
+	inline static NIBBLETYPE PlayerYawToMetaData(double a_Yaw)
+	{
+		ASSERT((a_Yaw >= -180) && (a_Yaw < 180));
+		
+		a_Yaw += 90 + 45;
+		if (a_Yaw > 360)
+		{
+			a_Yaw -= 360;
+		}
+		if ((a_Yaw >= 0) && (a_Yaw < 90))
+		{
+			return 0x0;
+		}
+		else if ((a_Yaw >= 180) && (a_Yaw < 270))
+		{
+			return 0x2;
+		}
+		else if ((a_Yaw >= 90) && (a_Yaw < 180))
+		{
+			return 0x1;
+		}
+		else
+		{
+			return 0x3;
+		}
+	}
+
+
+	/// 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)
+	{
+		return a_MetaData ^ 4;
+	}
+
+
+	/// Changes the door at the specified coords from open to close or vice versa
+	static void ChangeDoor(cWorld * a_World, int a_X, int a_Y, int a_Z)
+	{
+		NIBBLETYPE OldMetaData = a_World->GetBlockMeta(a_X, a_Y, a_Z);
+		
+		a_World->SetBlockMeta(a_X, a_Y, a_Z, ChangeStateMetaData(OldMetaData));
+		
+		if (OldMetaData & 8)
+		{
+			// Current block is top of the door
+			BLOCKTYPE  BottomBlock = a_World->GetBlock(a_X, a_Y - 1, a_Z);
+			NIBBLETYPE BottomMeta  = a_World->GetBlockMeta(a_X, a_Y - 1, a_Z);
+
+			if (IsDoor(BottomBlock) && !(BottomMeta & 8))
+			{
+				a_World->SetBlockMeta(a_X, a_Y - 1, a_Z, ChangeStateMetaData(BottomMeta));
+			}
+		}
+		else
+		{
+			// Current block is bottom of the door
+			BLOCKTYPE  TopBlock = a_World->GetBlock(a_X, a_Y + 1, a_Z);
+			NIBBLETYPE TopMeta = a_World->GetBlockMeta(a_X, a_Y + 1, a_Z);
+
+			if (IsDoor(TopBlock) && (TopMeta & 8))
+			{
+				a_World->SetBlockMeta(a_X, a_Y + 1, a_Z, ChangeStateMetaData(TopMeta));
+			}
+		}
+	}
+	
+	
+} ;
+
+
+
+