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Fix incorrect lighting when replacing slab lower with slab upper

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UnknownShadow200 2017-02-26 23:38:22 +11:00
parent 3c9bfe6965
commit fdd4b93fdb
1 changed files with 6 additions and 1 deletions
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7
ClassicalSharp/Map/Lighting/BasicLighting.cs
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@ -126,10 +126,15 @@ namespace ClassicalSharp.Map {
public override void UpdateLight(int x, int y, int z, BlockID oldBlock, BlockID newBlock) {
bool didBlock = info.BlocksLight[oldBlock];
bool nowBlocks = info.BlocksLight[newBlock];
if (didBlock == nowBlocks) return;
int oldOffset = (info.LightOffset[oldBlock] >> Side.Top) & 1;
int newOffset = (info.LightOffset[newBlock] >> Side.Top) & 1;
// Two cases we need to handle here:
if (didBlock == nowBlocks) {
if (!didBlock) return; // a) both old and new block do not block light
if (oldOffset == newOffset) return; // b) both blocks blocked light at the same Y coordinate
}
int index = (z * width) + x;
int lightH = heightmap[index];
if (lightH == short.MaxValue) {