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#pragma once
#include "BlockHandler.h"
#include "../Chunk.h"
#include "Mixins.h"
#include "BlockSlab.h"
class cBlockLeverHandler:
public cMetaRotator<cBlockHandler, 0x07, 0x04, 0x01, 0x03, 0x02, false>
{
using Super = cMetaRotator<cBlockHandler, 0x07, 0x04, 0x01, 0x03, 0x02, false>;
public:
cBlockLeverHandler(BLOCKTYPE a_BlockType):
Super(a_BlockType)
{
}
virtual bool OnUse(
cChunkInterface & a_ChunkInterface,
cWorldInterface & a_WorldInterface,
cPlayer & a_Player,
const Vector3i a_BlockPos,
eBlockFace a_BlockFace,
const Vector3i a_CursorPos
) override
{
// Flip the ON bit on / off using the XOR bitwise operation
NIBBLETYPE Meta = (a_ChunkInterface.GetBlockMeta(a_BlockPos) ^ 0x08);
a_ChunkInterface.SetBlockMeta(a_BlockPos, Meta);
a_WorldInterface.WakeUpSimulators(a_BlockPos);
a_WorldInterface.GetBroadcastManager().BroadcastSoundEffect("block.lever.click", a_BlockPos, 0.5f, (Meta & 0x08) ? 0.6f : 0.5f);
return true;
}
virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) override
{
// Reset meta to zero:
return cItem(E_BLOCK_LEVER, 1, 0);
}
virtual bool IsUseable(void) override
{
return true;
}
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
) override
{
a_BlockType = m_BlockType;
a_BlockMeta = LeverDirectionToMetaData(a_ClickedBlockFace);
return true;
}
/** Converts the block face of the neighbor to which the lever is attached to the lever block's meta. */
inline static NIBBLETYPE LeverDirectionToMetaData(eBlockFace a_Dir)
{
// Determine lever direction:
switch (a_Dir)
{
case BLOCK_FACE_YP: return 0x6;
case BLOCK_FACE_XP: return 0x1;
case BLOCK_FACE_XM: return 0x2;
case BLOCK_FACE_ZP: return 0x3;
case BLOCK_FACE_ZM: return 0x4;
case BLOCK_FACE_YM: return 0x0;
case BLOCK_FACE_NONE: return 0x6;
}
UNREACHABLE("Unsupported block face");
}
/** Converts the leve block's meta to the block face of the neighbor to which the lever is attached. */
inline static eBlockFace BlockMetaDataToBlockFace(NIBBLETYPE a_Meta)
{
switch (a_Meta & 0x7)
{
case 0x1: return BLOCK_FACE_XP;
case 0x2: return BLOCK_FACE_XM;
case 0x3: return BLOCK_FACE_ZP;
case 0x4: return BLOCK_FACE_ZM;
case 0x5:
case 0x6: return BLOCK_FACE_YP;
case 0x7:
case 0x0: return BLOCK_FACE_YM;
default:
{
ASSERT(!"Unhandled block meta!");
return BLOCK_FACE_NONE;
}
}
}
virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, const Vector3i a_RelPos, const cChunk & a_Chunk) override
{
// Find the type of block the lever is attached to:
auto Meta = a_Chunk.GetMeta(a_RelPos);
auto NeighborFace = BlockMetaDataToBlockFace(Meta);
auto NeighborPos = AddFaceDirection(a_RelPos, NeighborFace, true);
if (!cChunkDef::IsValidHeight(NeighborPos.y))
{
return false;
}
BLOCKTYPE NeighborBlockType;
if (!a_Chunk.UnboundedRelGetBlock(NeighborPos, NeighborBlockType, Meta))
{
return false;
}
// Allow any full block or the "good" side of a half-slab:
if (cBlockInfo::FullyOccupiesVoxel(NeighborBlockType))
{
return true;
}
else if (cBlockSlabHandler::IsAnySlabType(NeighborBlockType))
{
return (
(((Meta & 0x08) == 0x08) && (NeighborFace == BLOCK_FACE_TOP)) ||
(((Meta & 0x08) == 0) && (NeighborFace == BLOCK_FACE_BOTTOM))
);
}
return false;
}
virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) override
{
switch (a_Meta)
{
case 0x00: return 0x07; // Ceiling rotation
case 0x07: return 0x00;
case 0x05: return 0x06; // Ground rotation
case 0x06: return 0x05;
default: return Super::MetaRotateCCW(a_Meta); // Wall Rotation
}
}
virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) override
{
switch (a_Meta)
{
case 0x00: return 0x07; // Ceiling rotation
case 0x07: return 0x00;
case 0x05: return 0x06; // Ground rotation
case 0x06: return 0x05;
default: return Super::MetaRotateCW(a_Meta); // Wall Rotation
}
}
virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
{
UNUSED(a_Meta);
return 0;
}
/** Extracts the ON bit from metadata and returns if true if it is set */
static bool IsLeverOn(NIBBLETYPE a_BlockMeta)
{
return ((a_BlockMeta & 0x8) == 0x8);
}
} ;
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