a9031b6bae
* Fix cmake not adding Werror on clang, and _lots_ of warnings * WIP: Build fixes * Cannot make intermediate blockhandler instance * Tiger's changes * Fix BitIndex check * Handle invalid NextState values in cMultiVersionProtocol Co-authored-by: Tiger Wang <ziwei.tiger@outlook.com>
260 lines
6.5 KiB
C++
260 lines
6.5 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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protected:
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~cBlockTorchBaseHandler() = default;
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private:
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virtual bool GetPlacementBlockTypeMeta(
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cChunkInterface & a_ChunkInterface,
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cPlayer & a_Player,
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const Vector3i a_PlacedBlockPos,
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eBlockFace a_ClickedBlockFace,
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const Vector3i a_CursorPos,
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BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
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) const override
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{
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BLOCKTYPE ClickedBlockType;
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NIBBLETYPE ClickedBlockMeta;
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auto ClickedBlockPos = AddFaceDirection(a_PlacedBlockPos, a_ClickedBlockFace, true);
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a_ChunkInterface.GetBlockTypeMeta(ClickedBlockPos, ClickedBlockType, ClickedBlockMeta);
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if (!CanBePlacedOn(ClickedBlockType, ClickedBlockMeta, a_ClickedBlockFace))
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{
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// Couldn't be placed on whatever face was clicked, last ditch resort - find another face
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a_ClickedBlockFace = FindSuitableFace(a_ChunkInterface, a_PlacedBlockPos); // Set a_BlockFace to a valid direction which will be converted later to a metadata
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if (a_ClickedBlockFace == BLOCK_FACE_NONE)
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{
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// No attachable face found - don't place the torch
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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 = BlockFaceToMetaData(a_ClickedBlockFace);
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return true;
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}
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/** Converts the block face of the neighbor to which the torch is attached, to the torch block's meta. */
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inline static NIBBLETYPE BlockFaceToMetaData(eBlockFace a_NeighborBlockFace)
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{
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switch (a_NeighborBlockFace)
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{
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case BLOCK_FACE_BOTTOM: ASSERT(!"Shouldn't be getting this face"); return 0;
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case BLOCK_FACE_TOP: return E_META_TORCH_FLOOR;
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case BLOCK_FACE_EAST: return E_META_TORCH_EAST;
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case BLOCK_FACE_WEST: return E_META_TORCH_WEST;
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case BLOCK_FACE_NORTH: return E_META_TORCH_NORTH;
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case BLOCK_FACE_SOUTH: return E_META_TORCH_SOUTH;
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case BLOCK_FACE_NONE:
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{
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ASSERT(!"Unhandled torch direction!");
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break;
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}
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}
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return 0x0;
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}
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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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/** 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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/** Returns a suitable neighbor's blockface to place the torch at the specified pos
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Returns BLOCK_FACE_NONE on failure */
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static eBlockFace FindSuitableFace(cChunkInterface & a_ChunkInterface, const Vector3i a_TorchPos)
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{
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for (int i = BLOCK_FACE_YM; i <= BLOCK_FACE_XP; i++) // Loop through all faces
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{
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auto Face = static_cast<eBlockFace>(i);
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auto NeighborPos = AddFaceDirection(a_TorchPos, Face, true);
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BLOCKTYPE NeighborBlockType;
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NIBBLETYPE NeighborBlockMeta;
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a_ChunkInterface.GetBlockTypeMeta(NeighborPos, NeighborBlockType, NeighborBlockMeta);
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if (CanBePlacedOn(NeighborBlockType, NeighborBlockMeta, 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_NONE;
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}
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virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, const Vector3i a_RelPos, const cChunk & a_Chunk) const override
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{
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auto Face = MetaDataToBlockFace(a_Chunk.GetMeta(a_RelPos));
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auto NeighborRelPos = AddFaceDirection(a_RelPos, 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(NIBBLETYPE a_BlockMeta, const cEntity * a_Digger, const cItem * 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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