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