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cuberite-2a/src/Blocks/BlockObserver.h
Tiger Wang d92509a6e7
Re-implement up/down placement metadata (#5219)
+ Use player position when placing blocks which can face up or down, seems to better correspond to Vanilla behaviour.
* Fixes #4651
2021-05-14 10:42:08 +01:00

41 lines
886 B
C++

#pragma once
#include "BlockHandler.h"
#include "Mixins.h"
class cBlockObserverHandler final :
public cClearMetaOnDrop<cDisplacementYawRotator<cBlockHandler>>
{
using Super = cClearMetaOnDrop<cDisplacementYawRotator<cBlockHandler>>;
public:
using Super::Super;
inline static Vector3i GetObservingFaceOffset(NIBBLETYPE a_Meta)
{
return -GetSignalOutputOffset(a_Meta);
}
inline static Vector3i GetSignalOutputOffset(NIBBLETYPE a_Meta)
{
switch (a_Meta & 0x7)
{
case 0x00: return { 0, 1, 0 };
case 0x01: return { 0, -1, 0 };
case 0x02: return { 0, 0, 1 };
case 0x03: return { 0, 0, -1 };
case 0x04: return { 1, 0, 0 };
case 0x05: return { -1, 0, 0 };
default:
{
LOGWARNING("%s: Unknown metadata: %d", __FUNCTION__, a_Meta);
ASSERT(!"Unknown metadata while determining orientation of observer!");
return { 0, 0, 0 };
}
}
}
};