From 1d69c80ad38b494f737bde455225259192093c15 Mon Sep 17 00:00:00 2001
From: Tiger Wang <ziwei.tiger@hotmail.co.uk>
Date: Fri, 29 Nov 2013 22:27:08 +0000
Subject: Implemented trapdoors, fixes #43 and #105

Also updated redstone simulator to support it
---
 src/Blocks/BlockTrapdoor.h | 108 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 src/Blocks/BlockTrapdoor.h

(limited to 'src/Blocks/BlockTrapdoor.h')

diff --git a/src/Blocks/BlockTrapdoor.h b/src/Blocks/BlockTrapdoor.h
new file mode 100644
index 000000000..58d770d23
--- /dev/null
+++ b/src/Blocks/BlockTrapdoor.h
@@ -0,0 +1,108 @@
+
+#pragma once
+
+#include "BlockHandler.h"
+
+
+
+
+
+class cBlockTrapdoorHandler :
+	public cBlockHandler
+{
+public:
+	cBlockTrapdoorHandler(BLOCKTYPE a_BlockType)
+		: cBlockHandler(a_BlockType)
+	{
+	}
+
+	virtual const char * GetStepSound(void) override
+	{
+		return "step.wood";
+	}
+
+	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
+	{
+		// Reset meta to 0
+		a_Pickups.push_back(cItem(m_BlockType, 1, 0));
+	}
+
+	virtual bool IsUseable(void) override
+	{
+		return true;
+	}
+
+	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)
+	{
+		// Flip the ON bit on/off using the XOR bitwise operation
+		NIBBLETYPE Meta = (a_World->GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ) ^ 0x04);
+
+		a_World->SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, Meta);
+	}
+
+	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
+	{
+		a_BlockType = m_BlockType;
+		a_BlockMeta = BlockFaceToMetaData(a_BlockFace);
+
+		/* TODO: fix CursorY issues and uncomment this
+		if (a_CursorY > 7)
+		{
+			a_BlockMeta |= 0x8;
+		}
+		*/
+		return true;
+	}
+	
+	inline static NIBBLETYPE BlockFaceToMetaData(char a_BlockFace)
+	{
+		switch (a_BlockFace)
+		{
+			case BLOCK_FACE_ZP: return 0x1;
+			case BLOCK_FACE_ZM: return 0x0;
+			case BLOCK_FACE_XP: return 0x3;
+			case BLOCK_FACE_XM: return 0x2;
+			default:
+			{
+				ASSERT(!"Unhandled block face!");
+				return 0x0;
+			}
+		}
+	}
+
+	inline static NIBBLETYPE BlockMetaDataToBlockFace(NIBBLETYPE a_Meta)
+	{
+		switch (a_Meta & 0x3)
+		{
+			case 0x0: return BLOCK_FACE_ZM;
+			case 0x1: return BLOCK_FACE_ZP;
+			case 0x2: return BLOCK_FACE_XM;
+			case 0x3: return BLOCK_FACE_XP;
+			default:
+			{
+				ASSERT(!"Unhandled block meta!");
+				return BLOCK_FACE_NONE;
+			}
+		}
+	}
+
+	virtual bool CanBeAt(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, BlockMetaDataToBlockFace(Meta), true);
+		BLOCKTYPE BlockIsOn; a_Chunk.UnboundedRelGetBlockType(a_RelX, a_RelY, a_RelZ, BlockIsOn);
+
+		return (a_RelY > 0) && (g_BlockIsSolid[BlockIsOn]);
+	}
+};
+
+
+
+
-- 
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