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Fixed sub-biome clumping. Closes #249

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This commit is contained in:
Adubbz 2014-05-24 11:24:18 +10:00
parent e22673310d
commit 4df6ad4d3a
1 changed files with 22 additions and 1 deletions
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23
src/main/java/biomesoplenty/common/world/layer/GenLayerSubBiome.java
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@ -2,8 +2,12 @@ package biomesoplenty.common.world.layer;
import java.util.List;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.gen.layer.GenLayer;
import net.minecraft.world.gen.layer.IntCache;
import org.apache.commons.lang3.tuple.Pair;
import biomesoplenty.api.BOPBiomeManager;
import biomesoplenty.api.BOPBiomeManager.BiomeEntry;
import biomesoplenty.common.biomes.BOPSubBiome;
@ -11,6 +15,10 @@ import biomesoplenty.common.world.noise.SimplexNoise;
public class GenLayerSubBiome extends GenLayer
{
private final int OFFSET_RANGE = 500000;
private Pair<Integer, Integer>[] offsets = new Pair[BiomeGenBase.getBiomeGenArray().length];
public GenLayerSubBiome(long seed, GenLayer parent)
{
super(seed);
@ -36,7 +44,9 @@ public class GenLayerSubBiome extends GenLayer
if (selectedSubBiome != null)
{
if (SimplexNoise.noise((xi + x) * selectedSubBiome.zoom, (zi + z) * selectedSubBiome.zoom) > selectedSubBiome.threshold)
Pair<Integer, Integer> offset = getOffset(selectedSubBiome);
if (SimplexNoise.noise((xi + x + offset.getLeft()) * selectedSubBiome.zoom, (zi + z + offset.getRight()) * selectedSubBiome.zoom) > selectedSubBiome.threshold)
{
outputBiomeIDs[xi + zi * width] = selectedSubBiome.biomeID;
}
@ -51,4 +61,15 @@ public class GenLayerSubBiome extends GenLayer
return outputBiomeIDs;
}
private Pair<Integer, Integer> getOffset(BiomeGenBase biome)
{
Pair<Integer, Integer> offset = offsets[biome.biomeID];
if (offset != null) return offset;
else
{
return offsets[biome.biomeID] = Pair.of(this.nextInt(OFFSET_RANGE) - (OFFSET_RANGE / 2), this.nextInt(OFFSET_RANGE) - (OFFSET_RANGE / 2));
}
}
}