FieldGeneral

Use package fieldgeneral.example.entity.monster; public EntityYourMob(World world) { super(world); this.tasks.addTask(TASKID, new AI(this)); } I would go in order and have taskid be 1, 2, 3, and soforth Replace AI with your AI Class All of this would go in the EntityYOURMOB class

You have to create a basemod class and use fml Pre Initialization, Initialization, and Post Initialization Events to Register and Load your blocks, mobs, biomes, items, etc.

I think it's called Ambient, not for sure though

Fixed it by using EntityRegistry .addSpawn(EntityAncientzombie.class, 5, 1, 3, EnumCreatureType.monster, BiomeGenBase.BIOMENAME); for each biome, tedious but works

Changing EntityRegistry.addSpawn(EntityAncientzombie.class, 5, 1, 3, EnumCreatureType.monster, BiomeGenBase.biomelist); to EntityRegistry.addSpawn(EntityAncientzombie.class, 5, 1, 3, EnumCreatureType.monster, BiomeGenBase.desert); fixes the problem, but i want it to be able to spawn in all biomes, except the nether or end

Any idea on how i would fix this

Crash Report

Whenever I run my mod it crashes and points to the line of code: I have added a mob to the game and this is it's spawn method I don't know how to fix it