Registry fixes and debug

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

@@ -111,6 +111,10 @@ public class EndBiome {
 		genChance += chance;
 		return genChance;
 	}
+	
+	public String debug() {
+		return this.mcID + " " + this.genChanceUnmutable + " " + this.genChance;
+	}
 
 	public Biome getBiome() {
 		return biome;

src/main/java/ru/betterend/world/generator/BiomePicker.java

@@ -2,22 +2,27 @@ package ru.betterend.world.generator;
 
 import java.util.List;
 import java.util.Random;
+import java.util.Set;
 
 import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
 
+import net.minecraft.util.Identifier;
 import ru.betterend.registry.EndBiomes;
 import ru.betterend.world.biome.EndBiome;
 
 public class BiomePicker {
+	private final Set<Identifier> immutableIDs = Sets.newHashSet();
 	private final List<EndBiome> biomes = Lists.newArrayList();
 	private float maxChanceUnmutable = 0;
 	private float maxChance = 0;
 	private int biomeCount = 0;
 	
 	public void addBiome(EndBiome biome) {
-		biomes.add(biome);
 		maxChance = biome.mutateGenChance(maxChance);
+		immutableIDs.add(biome.getID());
 		maxChanceUnmutable = maxChance;
+		biomes.add(biome);
 		biomeCount ++;
 	}
 	
@@ -43,4 +48,14 @@ public class BiomePicker {
 	public List<EndBiome> getBiomes() {
 		return biomes;
 	}
+
+	public void debug() {
+		for (EndBiome b: biomes) {
+			System.out.println(b.debug());
+		}
+	}
+	
+	public boolean containsImmutable(Identifier id) {
+		return immutableIDs.contains(id);
+	}
 }