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-rw-r--r--src/Generating/BioGen.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/Generating/BioGen.cpp b/src/Generating/BioGen.cpp
index ec807c56a..a0407a145 100644
--- a/src/Generating/BioGen.cpp
+++ b/src/Generating/BioGen.cpp
@@ -295,11 +295,12 @@ void cBioGenCheckerboard::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::Biome
{
for (int z = 0; z < cChunkDef::Width; z++)
{
- int Base = cChunkDef::Width * a_ChunkZ + z;
+ int Base = (cChunkDef::Width * a_ChunkZ + z) / m_BiomeSize;
for (int x = 0; x < cChunkDef::Width; x++)
{
int Add = cChunkDef::Width * a_ChunkX + x;
- a_BiomeMap[x + cChunkDef::Width * z] = m_Biomes[(Base / m_BiomeSize + Add / m_BiomeSize) % m_BiomesCount];
+ int BiomeIdx = (((Base + Add / m_BiomeSize) % m_BiomesCount) + m_BiomesCount) % m_BiomesCount; // Need to add and modulo twice because of negative numbers
+ a_BiomeMap[x + cChunkDef::Width * z] = m_Biomes[BiomeIdx];
}
}
}