diff options
Diffstat (limited to 'src/mapgen.cpp')
| -rw-r--r-- | src/mapgen.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/mapgen.cpp b/src/mapgen.cpp index b095d34c8..7a03a4606 100644 --- a/src/mapgen.cpp +++ b/src/mapgen.cpp @@ -621,7 +621,7 @@ MapgenBasic::~MapgenBasic() } -MgStoneType MapgenBasic::generateBiomes() +MgStoneType MapgenBasic::generateBiomes(s16 biome_zero_level) { // can't generate biomes without a biome generator! assert(biomegen); @@ -673,7 +673,10 @@ MgStoneType MapgenBasic::generateBiomes() (air_above || !biome); if (is_stone_surface || is_water_surface) { - biome = biomegen->getBiomeAtIndex(index, y); + // Limit to +-MAX MAP GENERATION LIMIT to work with biome y_min / y_max. + s32 relative_y = rangelim(y - biome_zero_level, + -MAX_MAP_GENERATION_LIMIT, MAX_MAP_GENERATION_LIMIT); + biome = biomegen->getBiomeAtIndex(index, relative_y); if (biomemap[index] == BIOME_NONE && is_stone_surface) biomemap[index] = biome->index; |