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#pragma once
#include "BlockHandler.h"
#include "../Chunk.h"
class cBlockWallSignHandler:
public cBlockHandler
{
using Super = cBlockHandler;
public:
cBlockWallSignHandler(BLOCKTYPE a_BlockType):
Super(a_BlockType)
{
}
virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) override
{
return cItem(E_ITEM_SIGN, 1, 0);
}
virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, const Vector3i a_RelPos, const cChunk & a_Chunk) override
{
auto NeighborPos = a_RelPos + GetOffsetBehindTheSign(a_Chunk.GetMeta(a_RelPos));
BLOCKTYPE NeighborType;
if (!a_Chunk.UnboundedRelGetBlockType(NeighborPos, NeighborType))
{
// The neighbor is not accessible (unloaded chunk), bail out without changing this
return true;
}
return ((NeighborType == E_BLOCK_WALLSIGN) || (NeighborType == E_BLOCK_SIGN_POST) || cBlockInfo::IsSolid(NeighborType));
}
/** Returns the offset from the sign coords to the block to which the wallsign is attached, based on the wallsign's block meta.
Asserts / returns a zero vector on wrong meta. */
static Vector3i GetOffsetBehindTheSign(NIBBLETYPE a_BlockMeta)
{
switch (a_BlockMeta)
{
case 2: return Vector3i( 0, 0, 1);
case 3: return Vector3i( 0, 0, -1);
case 4: return Vector3i( 1, 0, 0);
case 5: return Vector3i(-1, 0, 0);
}
ASSERT(!"Invalid wallsign block meta");
return Vector3i();
}
/** Converts the block face of the neighbor to which the wallsign is attached to the wallsign block's meta. */
static NIBBLETYPE BlockFaceToMetaData(eBlockFace a_NeighborBlockFace)
{
switch (a_NeighborBlockFace)
{
case BLOCK_FACE_ZM: return 0x02;
case BLOCK_FACE_ZP: return 0x03;
case BLOCK_FACE_XM: return 0x04;
case BLOCK_FACE_XP: return 0x05;
case BLOCK_FACE_NONE:
case BLOCK_FACE_YP:
case BLOCK_FACE_YM:
{
break;
}
}
return 0x02;
}
virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
{
UNUSED(a_Meta);
return 13;
}
} ;
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