Biome generator

src/main/java/ru/betterend/world/biome/EndBiome.java

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+package ru.betterend.world.biome;
+
+import java.util.List;
+import java.util.Random;
+
+import com.google.common.collect.Lists;
+
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.registry.BuiltinRegistries;
+import net.minecraft.world.WorldAccess;
+import net.minecraft.world.biome.Biome;
+
+public class EndBiome
+{
+	protected List<Subbiome> subbiomes = Lists.newArrayList();
+	
+	protected final Biome biome;
+	protected final Identifier mcID;
+	protected EndBiome edge;
+	protected int edgeSize;
+	
+	protected EndBiome biomeParent;
+	protected float maxSubBiomeChance = 1;
+	protected float genChance = 1;
+	protected float noiseDensity = 0.3F;
+	protected float plantDensity = 1.0001F;
+	
+	public EndBiome(BiomeDefinition definition)
+	{
+		biome = definition.build();
+		mcID = definition.getID();
+	}
+	
+	public EndBiome(Biome biome)
+	{
+		this.biome = biome;
+		mcID = BuiltinRegistries.BIOME.getId(biome);
+	}
+	
+	public void setPlantDensity(float density)
+	{
+		this.plantDensity = density * 1.0001F;
+	}
+	
+	public float getPlantDensity()
+	{
+		return plantDensity;
+	}
+	
+	public void setNoiseDensity(float density)
+	{
+		this.noiseDensity = 1 - density * 2;
+	}
+	
+	public float getNoiseDensity()
+	{
+		return (1F - this.noiseDensity) / 2F;
+	}
+	
+	public void genSurfColumn(WorldAccess world, BlockPos pos, Random random) {}
+
+	public EndBiome getEdge()
+	{
+		return edge == null ? this : edge;
+	}
+	
+	public void setEdge(EndBiome edge)
+	{
+		this.edge = edge;
+		edge.biomeParent = this;
+	}
+
+	public int getEdgeSize()
+	{
+		return edgeSize;
+	}
+	
+	public void setEdgeSize(int size)
+	{
+		edgeSize = size;
+	}
+	
+	public void addSubBiome(EndBiome biome, float chance)
+	{
+		maxSubBiomeChance += chance;
+		biome.biomeParent = this;
+		subbiomes.add(new Subbiome(biome, maxSubBiomeChance));
+	}
+	
+	public EndBiome getSubBiome(Random random)
+	{
+		float chance = random.nextFloat() * maxSubBiomeChance;
+		for (Subbiome biome: subbiomes)
+			if (biome.canGenerate(chance))
+				return biome.biome;
+		return this;
+	}
+	
+	public EndBiome getParentBiome()
+	{
+		return this.biomeParent;
+	}
+	
+	public boolean hasEdge()
+	{
+		return edge != null;
+	}
+	
+	public boolean hasParentBiome()
+	{
+		return biomeParent != null;
+	}
+	
+	public boolean isSame(EndBiome biome)
+	{
+		return biome == this || (biome.hasParentBiome() && biome.getParentBiome() == this);
+	}
+	
+	protected final class Subbiome
+	{
+		EndBiome biome;
+		float chance;
+		
+		Subbiome(EndBiome biome, float chance)
+		{
+			this.biome = biome;
+			this.chance = chance;
+		}
+		
+		public boolean canGenerate(float chance)
+		{
+			return chance < this.chance;
+		}
+	}
+	
+	public boolean canGenerate(float chance)
+	{
+		return chance <= this.genChance;
+	}
+	
+	public float setGenChance(float chance)
+	{
+		genChance += chance;
+		return genChance;
+	}
+	
+	public Biome getBiome()
+	{
+		return biome;
+	}
+	
+	@Override
+	public String toString()
+	{
+		return mcID.toString();
+	}
+
+	public Identifier getID()
+	{
+		return mcID;
+	}
+}