127 lines
3.3 KiB
C++
127 lines
3.3 KiB
C++
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#pragma once
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#include "BlockHandler.h"
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#include "../World.h"
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#include "ClearMetaOnDrop.h"
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class cBlockLadderHandler :
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public cClearMetaOnDrop<cMetaRotator<cBlockHandler, 0x07, 0x02, 0x05, 0x03, 0x04> >
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{
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typedef cClearMetaOnDrop<cMetaRotator<cBlockHandler, 0x07, 0x02, 0x05, 0x03, 0x04> > super;
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public:
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cBlockLadderHandler(BLOCKTYPE a_BlockType)
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: super(a_BlockType)
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{
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}
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virtual bool GetPlacementBlockTypeMeta(
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cChunkInterface & a_ChunkInterface, cPlayer * a_Player,
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int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
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int a_CursorX, int a_CursorY, int a_CursorZ,
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BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
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) override
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{
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if (!LadderCanBePlacedAt(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace))
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{
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a_BlockFace = FindSuitableBlockFace(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ);
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if (a_BlockFace == BLOCK_FACE_BOTTOM)
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{
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return false;
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}
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}
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a_BlockType = m_BlockType;
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a_BlockMeta = DirectionToMetaData(a_BlockFace);
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return true;
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}
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virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
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{
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a_Pickups.Add(m_BlockType, 1, 0); // Reset meta
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}
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static NIBBLETYPE DirectionToMetaData(eBlockFace a_Direction)
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{
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switch (a_Direction)
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{
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case BLOCK_FACE_ZM: return 0x2;
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case BLOCK_FACE_ZP: return 0x3;
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case BLOCK_FACE_XM: return 0x4;
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case BLOCK_FACE_XP: return 0x5;
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case BLOCK_FACE_NONE:
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case BLOCK_FACE_YM:
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case BLOCK_FACE_YP:
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{
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return 0x2;
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}
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}
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#if !defined(__clang__)
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ASSERT(!"Unknown BLOCK_FACE");
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return 0;
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#endif
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}
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static eBlockFace MetaDataToDirection(NIBBLETYPE a_MetaData)
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{
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switch (a_MetaData)
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{
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case 0x2: return BLOCK_FACE_ZM;
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case 0x3: return BLOCK_FACE_ZP;
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case 0x4: return BLOCK_FACE_XM;
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case 0x5: return BLOCK_FACE_XP;
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default: return BLOCK_FACE_ZM;
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}
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}
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/** Finds a suitable Direction for the Ladder. Returns BLOCK_FACE_BOTTOM on failure */
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static eBlockFace FindSuitableBlockFace(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
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{
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for (int FaceInt = BLOCK_FACE_ZM; FaceInt <= BLOCK_FACE_XP; FaceInt++)
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{
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eBlockFace Face = static_cast<eBlockFace>(FaceInt);
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if (LadderCanBePlacedAt(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, Face))
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{
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return Face;
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}
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}
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return BLOCK_FACE_BOTTOM;
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}
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static bool LadderCanBePlacedAt(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace)
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{
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if ((a_BlockFace == BLOCK_FACE_BOTTOM) || (a_BlockFace == BLOCK_FACE_TOP))
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{
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return false;
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}
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AddFaceDirection( a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, true);
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return cBlockInfo::IsSolid(a_ChunkInterface.GetBlock(a_BlockX, a_BlockY, a_BlockZ));
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}
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virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
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{
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// TODO: Use AdjustCoordsByMeta(), then cChunk::UnboundedRelGetBlock() and finally some comparison
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eBlockFace BlockFace = MetaDataToDirection(a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ));
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int BlockX = a_RelX + a_Chunk.GetPosX() * cChunkDef::Width;
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int BlockZ = a_RelZ + a_Chunk.GetPosZ() * cChunkDef::Width;
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return LadderCanBePlacedAt(a_ChunkInterface, BlockX, a_RelY, BlockZ, BlockFace);
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}
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virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
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{
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UNUSED(a_Meta);
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return 0;
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}
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} ;
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