diff options
| -rw-r--r-- | src/LightingThread.cpp | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/LightingThread.cpp b/src/LightingThread.cpp index 4e2826778..302be4d02 100644 --- a/src/LightingThread.cpp +++ b/src/LightingThread.cpp @@ -368,7 +368,18 @@ void cLightingThread::PrepareSkyLight(void) for (int x = 1; x < cChunkDef::Width * 3 - 1; x++) { int idx = BaseZ + x; - int Current = m_HeightMap[idx] + 1; + // Find the lowest block in this column that receives full sunlight (go through transparent blocks): + int Current = m_HeightMap[idx]; + ASSERT(Current < cChunkDef::Height); + while ( + (Current >= 0) && + cBlockInfo::IsTransparent(m_BlockTypes[idx + Current * BlocksPerYLayer]) + ) + { + Current -= 1; // Sunlight goes down unchanged through this block + } + Current += 1; // Point to the last sunlit block, rather than the first non-transparent one + // The other neighbors don't need transparent-block-checking. At worst we'll have a few dud seeds above the ground. int Neighbor1 = m_HeightMap[idx + 1] + 1; // X + 1 int Neighbor2 = m_HeightMap[idx - 1] + 1; // X - 1 int Neighbor3 = m_HeightMap[idx + cChunkDef::Width * 3] + 1; // Z + 1 |