a62b2b1be2
* Move item placement into item handlers + Add appropriate CanBeAt checks in cPlayer::PlaceBlocks, into which all placement handlers call. * Partly addresses #5157 * Fixes #4878 * Fixes #2919 * Fixes #4629 * Fixes #4239 * Fixes #4849 Co-authored-by: changyong guo <guo1487@163.com> Co-authored-by: Xotheus <shady3300@outlook.com> Co-authored-by: Krist Pregracke <krist@tiger-scm.com> * Review fixes * Update APIDesc.lua * Rename Co-authored-by: changyong guo <guo1487@163.com> Co-authored-by: Xotheus <shady3300@outlook.com> Co-authored-by: Krist Pregracke <krist@tiger-scm.com>
178 lines
4.0 KiB
C++
178 lines
4.0 KiB
C++
#pragma once
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#include "BlockHandler.h"
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#include "../Chunk.h"
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#include "ChunkInterface.h"
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#include "Mixins.h"
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class cBlockTorchBaseHandler :
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public cMetaRotator<cBlockHandler, 0x7, 0x4, 0x1, 0x3, 0x2>
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{
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using Super = cMetaRotator<cBlockHandler, 0x7, 0x4, 0x1, 0x3, 0x2>;
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public:
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using Super::Super;
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/** Returns true if the torch can be placed on the specified block's face. */
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static bool CanBePlacedOn(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, eBlockFace a_BlockFace)
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{
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switch (a_BlockType)
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{
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case E_BLOCK_END_PORTAL_FRAME:
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case E_BLOCK_SOULSAND:
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{
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// Exceptional vanilla behaviour
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return true;
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}
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case E_BLOCK_GLASS:
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case E_BLOCK_STAINED_GLASS:
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case E_BLOCK_FENCE:
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case E_BLOCK_NETHER_BRICK_FENCE:
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case E_BLOCK_SPRUCE_FENCE:
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case E_BLOCK_BIRCH_FENCE:
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case E_BLOCK_JUNGLE_FENCE:
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case E_BLOCK_DARK_OAK_FENCE:
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case E_BLOCK_ACACIA_FENCE:
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case E_BLOCK_COBBLESTONE_WALL:
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{
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// Torches can only be placed on top of these blocks
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return (a_BlockFace == BLOCK_FACE_YP);
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}
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case E_BLOCK_STONE_SLAB:
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case E_BLOCK_WOODEN_SLAB:
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{
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// Toches can be placed only on the top of top-half-slabs
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return ((a_BlockFace == BLOCK_FACE_YP) && ((a_BlockMeta & 0x08) == 0x08));
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}
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case E_BLOCK_OAK_WOOD_STAIRS:
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case E_BLOCK_COBBLESTONE_STAIRS:
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case E_BLOCK_BRICK_STAIRS:
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case E_BLOCK_STONE_BRICK_STAIRS:
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case E_BLOCK_NETHER_BRICK_STAIRS:
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case E_BLOCK_SANDSTONE_STAIRS:
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case E_BLOCK_SPRUCE_WOOD_STAIRS:
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case E_BLOCK_BIRCH_WOOD_STAIRS:
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case E_BLOCK_JUNGLE_WOOD_STAIRS:
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case E_BLOCK_QUARTZ_STAIRS:
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case E_BLOCK_ACACIA_WOOD_STAIRS:
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case E_BLOCK_DARK_OAK_WOOD_STAIRS:
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case E_BLOCK_RED_SANDSTONE_STAIRS:
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{
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return (a_BlockFace == BLOCK_FACE_TOP) && (a_BlockMeta & E_BLOCK_STAIRS_UPSIDE_DOWN);
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}
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default:
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{
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if (cBlockInfo::FullyOccupiesVoxel(a_BlockType))
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{
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// Torches can be placed on all sides of full blocks except the bottom
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return (a_BlockFace != BLOCK_FACE_YM);
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}
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return false;
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}
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}
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}
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protected:
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~cBlockTorchBaseHandler() = default;
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private:
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/** Converts the torch block's meta to the block face of the neighbor to which the torch is attached. */
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inline static eBlockFace MetaDataToBlockFace(NIBBLETYPE a_MetaData)
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{
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switch (a_MetaData)
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{
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case 0: return BLOCK_FACE_TOP; // By default, the torches stand on the ground
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case E_META_TORCH_FLOOR: return BLOCK_FACE_TOP;
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case E_META_TORCH_EAST: return BLOCK_FACE_EAST;
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case E_META_TORCH_WEST: return BLOCK_FACE_WEST;
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case E_META_TORCH_NORTH: return BLOCK_FACE_NORTH;
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case E_META_TORCH_SOUTH: return BLOCK_FACE_SOUTH;
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default:
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{
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ASSERT(!"Unhandled torch metadata");
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break;
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}
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}
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return BLOCK_FACE_TOP;
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}
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virtual bool CanBeAt(const cChunk & a_Chunk, const Vector3i a_Position, const NIBBLETYPE a_Meta) const override
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{
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auto Face = MetaDataToBlockFace(a_Meta);
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auto NeighborRelPos = AddFaceDirection(a_Position, Face, true);
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BLOCKTYPE NeighborBlockType;
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NIBBLETYPE NeighborBlockMeta;
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if (!a_Chunk.UnboundedRelGetBlock(NeighborRelPos, NeighborBlockType, NeighborBlockMeta))
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{
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// Neighbor in an unloaded chunk, bail out without changint this.
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return false;
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}
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return CanBePlacedOn(NeighborBlockType, NeighborBlockMeta, Face);
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}
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virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const 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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class cBlockTorchHandler final :
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public cClearMetaOnDrop<cBlockTorchBaseHandler>
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{
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using Super = cClearMetaOnDrop<cBlockTorchBaseHandler>;
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public:
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using Super::Super;
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};
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class cBlockRedstoneTorchHandler final :
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public cBlockTorchBaseHandler
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{
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using Super = cBlockTorchBaseHandler;
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public:
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using Super::Super;
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private:
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virtual cItems ConvertToPickups(const NIBBLETYPE a_BlockMeta, const cItem * const a_Tool) const override
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{
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// Always drop the ON torch, meta 0:
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return { E_BLOCK_REDSTONE_TORCH_ON };
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}
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virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const 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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