67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
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#pragma once
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#include "ItemHandler.h"
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#include "Blocks/BlockTrapdoor.h"
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class cItemTrapdoorHandler final :
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public cItemHandler
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{
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using Super = cItemHandler;
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public:
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using Super::Super;
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private:
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inline static NIBBLETYPE BlockFaceToMetaData(eBlockFace a_BlockFace)
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{
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switch (a_BlockFace)
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{
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case BLOCK_FACE_ZP: return 0x1;
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case BLOCK_FACE_ZM: return 0x0;
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case BLOCK_FACE_XP: return 0x3;
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case BLOCK_FACE_XM: return 0x2;
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default: UNREACHABLE("Unsupported block face");
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}
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}
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virtual bool CommitPlacement(cPlayer & a_Player, const cItem & a_HeldItem, const Vector3i a_PlacePosition, const eBlockFace a_ClickedBlockFace, const Vector3i a_CursorPosition) const override
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{
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NIBBLETYPE Meta;
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if (a_ClickedBlockFace == BLOCK_FACE_YP)
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{
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// Trapdoor is placed on top of a block.
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// Engage yaw rotation to determine hinge direction:
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Meta = cBlockTrapdoorHandler::YawToMetaData(a_Player.GetYaw());
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}
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else if (a_ClickedBlockFace == BLOCK_FACE_YM)
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{
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// Trapdoor is placed on bottom of a block.
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// Engage yaw rotation to determine hinge direction, and toggle 'Move up half-block' bit on:
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Meta = cBlockTrapdoorHandler::YawToMetaData(a_Player.GetYaw()) | 0x8;
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}
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else
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{
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// Placement on block sides; hinge direction is determined by which side was clicked:
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Meta = BlockFaceToMetaData(a_ClickedBlockFace);
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if (a_CursorPosition.y > 7)
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{
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// Trapdoor is placed on a higher half of a vertical block.
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// Toggle 'Move up half-block' bit on:
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Meta |= 0x8;
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}
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}
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return a_Player.PlaceBlock(a_PlacePosition, static_cast<BLOCKTYPE>(a_HeldItem.m_ItemType), Meta);
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}
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};
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