Where the mobs are stored

package EmeraldsPlus.common.Registers;

import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityEggInfo;
import net.minecraft.entity.EntityList;
import net.minecraft.entity.EnumCreatureType;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraftforge.common.DungeonHooks;
import EmeraldsPlus.common.EmeraldsPlusCore;
import EmeraldsPlus.common.entity.EntityCorruptedSlime;
import EmeraldsPlus.common.entity.EntityCrystalizedZombie;
import EmeraldsPlus.common.entity.EntitySummoner;
import cpw.mods.fml.common.registry.EntityRegistry;
import cpw.mods.fml.common.registry.LanguageRegistry;

public class MobRegistry {
    static int startEntityId = 300;
 // Mobs; REMEMBER TO CHANGE THE ENTITY ID AND REGISTER IT IN THE ClientProxyEmeraldsPlus CLASS
    /**
     * Registers the entity and tells it where to spawn.
     */
    public static void entityRegisters(){
    // Summoner
        EntityRegistry.registerModEntity(EntitySummoner.class, "Summoner", 1, "EmeraldsPlus", 80, 3, true);
        EntityRegistry.addSpawn(EntitySummoner.class, 1, 1, 1, EnumCreatureType.monster, BiomeGenBase.desert);

    // Corrupted Slime
        EntityRegistry.registerModEntity(EntityCorruptedSlime.class, "CorruptedSlime", 2, "EmeraldsPlus", 80, 3, true);
        EntityRegistry.addSpawn(EntityCorruptedSlime.class, 2, 2, 2, EnumCreatureType.monster, BiomeGenBase.desert);

    // Crystalized Zombie
        EntityRegistry.registerModEntity(EntityCrystalizedZombie.class, "CrystalizedZombie", 3, "EmeraldsPlus", 80, 3, true);
        EntityRegistry.addSpawn(EntityCrystalizedZombie.class, 2, 2, 2, EnumCreatureType.monster,  BiomeGenBase.desert, BiomeGenBase.desertHills,
                BiomeGenBase.forest, BiomeGenBase.desertHills, BiomeGenBase.extremeHills, BiomeGenBase.extremeHillsEdge, BiomeGenBase.forestHills,
                BiomeGenBase.mushroomIsland, BiomeGenBase.plains, BiomeGenBase.taiga, BiomeGenBase.taigaHills, BiomeGenBase.swampland);
    }
    /**
     * Registers spawn eggs for the entity.
     */
    public static void entityEggs(){
    // Summoner
        LanguageRegistry.instance().addStringLocalization("entity.EmeraldsPlus.Summoner.name", "Summoner");
        registerEntityEgg(EntitySummoner.class, 0x06189E, 0xFADD00);

    // Corrupted Slime
        LanguageRegistry.instance().addStringLocalization("entity.EmeraldsPlus.CorruptedSlime.name", "CorruptedSlime");
        registerEntityEgg(EntityCorruptedSlime.class, 0x6C0094, 0x9800DE);

    // Crystalized Zombie
        LanguageRegistry.instance().addStringLocalization("entity.EmeraldsPlus.CrystalizedZombie.name", "Crystalized Zombie");
        registerEntityEgg(EntityCrystalizedZombie.class, 0x8C0094, 0x3508DE);
    }
    /**
     * Tells Minecraft that there should be a dungeon generated for this mob.
     */
    public static void dungeonHooks(){
    // Crystalized Zombie
        DungeonHooks.addDungeonMob("CrystalizedZombie", 160);
    }
    public static int getUniqueEntityId()
    {
     do
     {
         startEntityId++;
     }
     while (EntityList.getStringFromID(startEntityId) != null);

      return startEntityId;
    }
    @SuppressWarnings("unchecked")
    public static void registerEntityEgg(Class<? extends Entity> entity, int primaryColor, int secondaryColor)
    {
     int id = getUniqueEntityId();
     EntityList.IDtoClassMapping.put(id, entity);
     EntityList.entityEggs.put(id, new EntityEggInfo(id, primaryColor, secondaryColor));
    }
}