Topic is pretty self explanatory this time. I've been looking around BiomeGenBase and a few other files to see if I could dig up anything, but so far I don't see it being possible. BUT, I figured I would ask here in case I have missed something.

 

 

Thanks for the help,

Cyan

What do you mean by "biome's mutation"?

Sorry. Guess I should have clarified. The mutations are the rare spawnings of the base biomes. Such as the sunflower plains etc.

 

public BiomeGenBase createMutation()

    {

        BiomeGenPlains biomegenplains = new BiomeGenPlains(this.biomeID + 128);

        biomegenplains.setBiomeName("Sunflower Plains");

        biomegenplains.field_150628_aC = true;

        biomegenplains.setColor(9286496);

        biomegenplains.field_150609_ah = 14273354;

        return biomegenplains;

    }

 

Is the code to create them, but I don't believe there is a way to make things spawn exclusively to the mutations.

Then just let it spawn in every BiomeGenPlains and then check in your entitys getCanSpawnHere() method if

1. the super method returns also true (if you didn't already override the method)

2. if the biome in which the entity is placed has the name "Sunflower Plains"

 

To get the biomes name, use

worldObj.getBiomeGenForCoords([X-Position of entity], [Z-Position of entity]).biomeName