path: root/src/Blocks/BlockTrapdoor.h

#pragma once

#include "BlockHandler.h"
#include "Mixins.h"
#include "../EffectID.h"




class cBlockTrapdoorHandler final :
	public cClearMetaOnDrop<cYawRotator<cBlockHandler, 0x03, 0x01, 0x02, 0x00, 0x03, false>>
{
	using Super = cClearMetaOnDrop<cYawRotator<cBlockHandler, 0x03, 0x01, 0x02, 0x00, 0x03, false>>;

public:

	using Super::Super;

private:

	virtual bool IsUseable(void) const override
	{
		return true;
	}





	virtual bool OnUse(
		cChunkInterface & a_ChunkInterface,
		cWorldInterface & a_WorldInterface,
		cPlayer & a_Player,
		const Vector3i a_BlockPos,
		eBlockFace a_BlockFace,
		const Vector3i a_CursorPos
	) const override
	{
		if (m_BlockType == E_BLOCK_IRON_TRAPDOOR)
		{
			// Iron doors can only be toggled by redstone, not by right-clicking
			return false;
		}

		// Flip the ON bit on / off using the XOR bitwise operation
		NIBBLETYPE Meta = (a_ChunkInterface.GetBlockMeta(a_BlockPos) ^ 0x04);
		a_ChunkInterface.SetBlockMeta(a_BlockPos, Meta);
		a_WorldInterface.GetBroadcastManager().BroadcastSoundParticleEffect(EffectID::SFX_RANDOM_FENCE_GATE_OPEN, a_BlockPos, 0, a_Player.GetClientHandle());

		return true;
	}





	virtual void OnCancelRightClick(
		cChunkInterface & a_ChunkInterface,
		cWorldInterface & a_WorldInterface,
		cPlayer & a_Player,
		const Vector3i a_BlockPos,
		eBlockFace a_BlockFace
	) const override
	{
		UNUSED(a_ChunkInterface);
		a_WorldInterface.SendBlockTo(a_BlockPos, a_Player);
	}





	virtual bool GetPlacementBlockTypeMeta(
		cChunkInterface & a_ChunkInterface,
		cPlayer & a_Player,
		const Vector3i a_PlacedBlockPos,
		eBlockFace a_ClickedBlockFace,
		const Vector3i a_CursorPos,
		BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
	) const override
	{
		if (a_ClickedBlockFace == BLOCK_FACE_YP)
		{
			// Trapdoor is placed on top of a block.
			// Engage yaw rotation to determine hinge direction:
			return Super::GetPlacementBlockTypeMeta(a_ChunkInterface, a_Player, a_PlacedBlockPos, a_ClickedBlockFace, a_CursorPos, a_BlockType, a_BlockMeta);
		}
		else if (a_ClickedBlockFace == BLOCK_FACE_YM)
		{
			// Trapdoor is placed on bottom of a block.
			// Engage yaw rotation to determine hinge direction:
			if (!Super::GetPlacementBlockTypeMeta(a_ChunkInterface, a_Player, a_PlacedBlockPos, a_ClickedBlockFace, a_CursorPos, a_BlockType, a_BlockMeta))
			{
				return false;
			}

			// Toggle 'Move up half-block' bit on:
			a_BlockMeta |= 0x8;

			return true;
		}

		// Placement on block sides; hinge direction is determined by which side was clicked:
		a_BlockType = m_BlockType;
		a_BlockMeta = BlockFaceToMetaData(a_ClickedBlockFace);

		if (a_CursorPos.y > 7)
		{
			// Trapdoor is placed on a higher half of a vertical block.
			// Toggle 'Move up half-block' bit on:
			a_BlockMeta |= 0x8;
		}

		return true;
	}





	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:
			{
				ASSERT(!"Unhandled block face!");
				return 0;
			}
		}
	}





	inline static eBlockFace BlockMetaDataToBlockFace(NIBBLETYPE a_Meta)
	{
		switch (a_Meta & 0x3)
		{
			case 0x0: return BLOCK_FACE_ZM;
			case 0x1: return BLOCK_FACE_ZP;
			case 0x2: return BLOCK_FACE_XM;
			case 0x3: return BLOCK_FACE_XP;
			default:
			{
				ASSERT(!"Unhandled block meta!");
				return BLOCK_FACE_NONE;
			}
		}
	}





	virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const override
	{
		UNUSED(a_Meta);
		switch (m_BlockType)
		{
			case E_BLOCK_TRAPDOOR: return 13;
			case E_BLOCK_IRON_TRAPDOOR: return 6;
			default:
			{
				ASSERT(!"Unhandled blocktype in trapdoor handler!");
				return 0;
			}
		}
	}
};