286 lines
6.3 KiB
C++
286 lines
6.3 KiB
C++
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// BlockSlab.h
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// Declares cBlockSlabHandler and cBlockDoubleSlabHandler classes
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#pragma once
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#include "BlockHandler.h"
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#include "ChunkInterface.h"
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#include "../BlockInfo.h"
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#include "../Entities/Player.h"
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#include "../BlockInfo.h"
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class cBlockSlabHandler :
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public cBlockHandler
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{
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using Super = cBlockHandler;
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public:
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using Super::Super;
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/** Returns true if the specified blocktype is one of the slabs handled by this handler */
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static bool IsAnySlabType(BLOCKTYPE a_BlockType)
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{
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return (
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(a_BlockType == E_BLOCK_WOODEN_SLAB) ||
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(a_BlockType == E_BLOCK_STONE_SLAB) ||
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(a_BlockType == E_BLOCK_RED_SANDSTONE_SLAB) ||
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(a_BlockType == E_BLOCK_PURPUR_SLAB)
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);
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}
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private:
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virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) const override
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{
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// Reset the "top half" flag:
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return cItem(m_BlockType, 1, a_BlockMeta & 0x07);
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}
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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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a_BlockType = m_BlockType;
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NIBBLETYPE Meta = static_cast<NIBBLETYPE>(a_Player.GetEquippedItem().m_ItemDamage);
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// Set the correct metadata based on player equipped item (i.e. a_BlockMeta not initialised yet)
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switch (a_ClickedBlockFace)
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{
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case BLOCK_FACE_TOP:
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{
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// Bottom half slab block
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a_BlockMeta = Meta & 0x07;
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break;
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}
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case BLOCK_FACE_BOTTOM:
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{
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// Top half slab block
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a_BlockMeta = Meta | 0x08;
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break;
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}
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case BLOCK_FACE_EAST:
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case BLOCK_FACE_NORTH:
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case BLOCK_FACE_SOUTH:
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case BLOCK_FACE_WEST:
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{
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if (a_CursorPos.y > 7)
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{
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// Cursor at top half of block, place top slab
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a_BlockMeta = Meta | 0x08; break;
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}
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else
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{
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// Cursor at bottom half of block, place bottom slab
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a_BlockMeta = Meta & 0x07; break;
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}
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}
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case BLOCK_FACE_NONE: return false;
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} // switch (a_BlockFace)
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// Check if the block at the coordinates is a single slab. Eligibility for combining has already been processed in ClientHandle
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// Changed to-be-placed to a double slab if we are clicking on a single slab, as opposed to placing one for the first time
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if (IsAnySlabType(a_ChunkInterface.GetBlock(a_PlacedBlockPos)))
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{
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a_BlockType = GetDoubleSlabType(m_BlockType);
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a_BlockMeta = a_BlockMeta & 0x07;
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}
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return true;
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}
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virtual void OnCancelRightClick(
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cChunkInterface & a_ChunkInterface,
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cWorldInterface & a_WorldInterface,
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cPlayer & a_Player,
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const Vector3i a_BlockPos,
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eBlockFace a_BlockFace
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) const override
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{
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if ((a_BlockFace == BLOCK_FACE_NONE) || (a_Player.GetEquippedItem().m_ItemType != static_cast<short>(m_BlockType)))
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{
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return;
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}
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// Sends the slab back to the client. It's to refuse a doubleslab placement. */
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a_Player.GetWorld()->SendBlockTo(a_BlockPos, a_Player);
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}
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/** Converts the single-slab blocktype to its equivalent double-slab blocktype */
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static BLOCKTYPE GetDoubleSlabType(BLOCKTYPE a_SingleSlabBlockType)
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{
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switch (a_SingleSlabBlockType)
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{
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case E_BLOCK_STONE_SLAB: return E_BLOCK_DOUBLE_STONE_SLAB;
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case E_BLOCK_WOODEN_SLAB: return E_BLOCK_DOUBLE_WOODEN_SLAB;
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case E_BLOCK_RED_SANDSTONE_SLAB: return E_BLOCK_DOUBLE_RED_SANDSTONE_SLAB;
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case E_BLOCK_PURPUR_SLAB: return E_BLOCK_PURPUR_DOUBLE_SLAB;
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}
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ASSERT(!"Unhandled slab type!");
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return E_BLOCK_AIR;
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}
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virtual NIBBLETYPE MetaMirrorXZ(NIBBLETYPE a_Meta) const override
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{
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// Toggle the 4th bit - up / down:
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return (a_Meta ^ 0x08);
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}
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virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const override
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{
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a_Meta &= 0x7;
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switch (m_BlockType)
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{
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case E_BLOCK_STONE_SLAB:
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{
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switch (a_Meta)
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{
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case E_META_STONE_SLAB_SANDSTONE: return 2;
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case E_META_STONE_SLAB_PLANKS: return 13;
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case E_META_STONE_SLAB_STONE_BRICK:
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case E_META_STONE_SLAB_STONE:
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case E_META_STONE_SLAB_COBBLESTONE: return 11;
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case E_META_STONE_SLAB_BRICK: return 28;
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case E_META_STONE_SLAB_NETHER_BRICK: return 35;
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case E_META_STONE_SLAB_QUARTZ: return 8;
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default:
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{
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ASSERT(!"Unhandled meta in slab handler!");
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return 0;
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}
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}
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}
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case E_BLOCK_WOODEN_SLAB:
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{
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switch (a_Meta)
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{
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case E_META_WOODEN_SLAB_BIRCH: return 2;
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case E_META_WOODEN_SLAB_JUNGLE: return 10;
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case E_META_WOODEN_SLAB_OAK: return 13;
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case E_META_WOODEN_SLAB_ACACIA: return 15;
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case E_META_WOODEN_SLAB_DARK_OAK: return 26;
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case E_META_WOODEN_SLAB_SPRUCE: return 34;
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default:
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{
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ASSERT(!"Unhandled meta in slab handler!");
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return 0;
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}
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}
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}
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case E_BLOCK_RED_SANDSTONE_SLAB:
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{
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return 10;
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}
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case E_BLOCK_PURPUR_SLAB:
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{
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return 16;
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}
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default:
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{
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ASSERT(!"Unhandled blocktype in slab handler!");
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return 0;
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}
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}
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}
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virtual bool IsInsideBlock(Vector3d a_Position, const NIBBLETYPE a_BlockMeta) const override
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{
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if (a_BlockMeta & 0x08) // top half
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{
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return true;
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}
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return cBlockHandler::IsInsideBlock(a_Position, a_BlockMeta);
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}
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} ;
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class cBlockDoubleSlabHandler:
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public cBlockHandler
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{
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using Super = cBlockHandler;
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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, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) const override
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{
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BLOCKTYPE Block = GetSingleSlabType(m_BlockType);
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return cItem(Block, 2, a_BlockMeta & 0x7);
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}
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inline static BLOCKTYPE GetSingleSlabType(BLOCKTYPE a_BlockType)
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{
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switch (a_BlockType)
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{
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case E_BLOCK_DOUBLE_STONE_SLAB: return E_BLOCK_STONE_SLAB;
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case E_BLOCK_DOUBLE_WOODEN_SLAB: return E_BLOCK_WOODEN_SLAB;
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case E_BLOCK_DOUBLE_RED_SANDSTONE_SLAB: return E_BLOCK_RED_SANDSTONE_SLAB;
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case E_BLOCK_PURPUR_DOUBLE_SLAB: return E_BLOCK_PURPUR_SLAB;
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}
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ASSERT(!"Unhandled double slab type!");
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return a_BlockType;
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}
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virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const override
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{
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// For doule slabs, the meta values are the same. Only the meaning of the 4th bit changes, but that's ignored in the below handler
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return cBlockHandler::For(GetSingleSlabType(m_BlockType)).GetMapBaseColourID(a_Meta);
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}
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} ;
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