OSpawnListEntry.java

import java.util.HashMap;

public class OSpawnListEntry {

    public Class a;
    public int b;

    public static final HashMap<Class<? extends OEntityLiving>, Integer> chanceMap = new HashMap();
    static {
        chanceMap.put(OEntitySpider.class, 10);
        chanceMap.put(OEntityZombie.class, 10);
        chanceMap.put(OEntitySkeleton.class, 10);
        chanceMap.put(OEntityCreeper.class, 10);
        chanceMap.put(OEntitySlime.class, 10);

        chanceMap.put(OEntityGhast.class, 10);
        chanceMap.put(OEntityPigZombie.class, 10);

        chanceMap.put(OEntitySheep.class, 12);
        chanceMap.put(OEntityPig.class, 10);
        chanceMap.put(OEntityChicken.class, 10);
        chanceMap.put(OEntityCow.class, 8);
        chanceMap.put(OEntityWolf.class, 2);

        chanceMap.put(OEntitySquid.class, 10);
    }


    public OSpawnListEntry(Class entityClass, int spawnChance) {
        a = entityClass;
        b = spawnChance;
    }

    public static OSpawnListEntry getSpawnListEntry(Class<?> entityClass) {
        if (!OEntityLiving.class.isAssignableFrom(entityClass))
            throw new IllegalArgumentException(entityClass + " is not a living entity class");
        return new OSpawnListEntry(entityClass, chanceMap.get(entityClass));
    }
}