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#pragma once
#include "BlockHandler.h"
#include "Mixins.h"
class cBlockLadderHandler :
public cClearMetaOnDrop<cMetaRotator<cBlockHandler, 0x07, 0x02, 0x05, 0x03, 0x04> >
{
using super = cClearMetaOnDrop<cMetaRotator<cBlockHandler, 0x07, 0x02, 0x05, 0x03, 0x04>>;
public:
cBlockLadderHandler(BLOCKTYPE a_BlockType):
super(a_BlockType)
{
}
virtual bool GetPlacementBlockTypeMeta(
cChunkInterface & a_ChunkInterface, 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
{
if (!LadderCanBePlacedAt(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace))
{
a_BlockFace = FindSuitableBlockFace(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ);
if (a_BlockFace == BLOCK_FACE_BOTTOM)
{
return false;
}
}
a_BlockType = m_BlockType;
a_BlockMeta = DirectionToMetaData(a_BlockFace);
return true;
}
static NIBBLETYPE DirectionToMetaData(eBlockFace a_Direction)
{
switch (a_Direction)
{
case BLOCK_FACE_ZM: return 0x2;
case BLOCK_FACE_ZP: return 0x3;
case BLOCK_FACE_XM: return 0x4;
case BLOCK_FACE_XP: return 0x5;
case BLOCK_FACE_NONE:
case BLOCK_FACE_YM:
case BLOCK_FACE_YP:
{
return 0x2;
}
}
UNREACHABLE("Unsupported block face");
}
static eBlockFace MetaDataToDirection(NIBBLETYPE a_MetaData)
{
switch (a_MetaData)
{
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: return BLOCK_FACE_ZM;
}
}
/** Finds a suitable Direction for the Ladder. Returns BLOCK_FACE_BOTTOM on failure */
static eBlockFace FindSuitableBlockFace(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
{
for (int FaceInt = BLOCK_FACE_ZM; FaceInt <= BLOCK_FACE_XP; FaceInt++)
{
eBlockFace Face = static_cast<eBlockFace>(FaceInt);
if (LadderCanBePlacedAt(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, Face))
{
return Face;
}
}
return BLOCK_FACE_BOTTOM;
}
static bool LadderCanBePlacedAt(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace)
{
if ((a_BlockFace == BLOCK_FACE_BOTTOM) || (a_BlockFace == BLOCK_FACE_TOP))
{
return false;
}
AddFaceDirection( a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, true);
return cBlockInfo::IsSolid(a_ChunkInterface.GetBlock({a_BlockX, a_BlockY, a_BlockZ}));
}
virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
{
// TODO: Use AdjustCoordsByMeta(), then cChunk::UnboundedRelGetBlock() and finally some comparison
eBlockFace BlockFace = MetaDataToDirection(a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ));
int BlockX = a_RelX + a_Chunk.GetPosX() * cChunkDef::Width;
int BlockZ = a_RelZ + a_Chunk.GetPosZ() * cChunkDef::Width;
return LadderCanBePlacedAt(a_ChunkInterface, BlockX, a_RelY, BlockZ, BlockFace);
}
virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
{
UNUSED(a_Meta);
return 0;
}
} ;
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