Added a extra wall sign handler.

Fixes #1119

src/Blocks/BlockSignPost.h

@@ -0,0 +1,103 @@
+
+#pragma once
+
+#include "BlockHandler.h"
+#include "../Entities/Player.h"
+#include "Chunk.h"
+
+
+
+
+
+class cBlockSignPostHandler :
+	public cBlockHandler
+{
+public:
+	cBlockSignPostHandler(BLOCKTYPE a_BlockType)
+		: cBlockHandler(a_BlockType)
+	{
+	}
+
+
+	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
+	{
+		a_Pickups.push_back(cItem(E_ITEM_SIGN, 1, 0));
+	}
+
+
+	virtual const char * GetStepSound(void) override
+	{
+		return "step.wood";
+	}
+
+
+	virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
+	{
+		if (a_RelY <= 0)
+		{
+			return false;
+		}
+
+		return (cBlockInfo::IsSolid(a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ)));
+	}
+
+
+	static NIBBLETYPE RotationToMetaData(double a_Rotation)
+	{
+		a_Rotation += 180 + (180 / 16);  // So it's not aligned with axis
+		if (a_Rotation > 360)
+		{
+			a_Rotation -= 360;
+		}
+		
+		a_Rotation = (a_Rotation / 360) * 16;
+		
+		return ((char)a_Rotation) % 16;
+	}
+
+
+	virtual void OnPlacedByPlayer(
+		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,
+		BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta
+	) override
+	{
+		a_Player->GetClientHandle()->SendEditSign(a_BlockX, a_BlockY, a_BlockZ);
+	}
+
+
+	virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) override
+	{
+		return (a_Meta + 4) & 0x0f;
+	}
+
+
+	virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) override
+	{
+		return (a_Meta + 12) & 0x0f;
+	}
+
+	virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) override
+	{
+		//  Mirrors signs over the XY plane (North-South Mirroring)
+
+		//  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);
+	}
+
+
+	virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) override
+	{
+		//  Mirrors signs over the YZ plane (East-West Mirroring)
+
+		//  There are 16 meta values which correspond to different directions.
+		//  These values are equated to angles on a circle; 0x10 = 360 degrees.
+		return 0x10 - a_Meta;
+	}
+} ;
+
+
+
+