src/main/java/com/legacy/aether/entities/passive/EntityAetherAnimal.java

package com.legacy.aether.entities.passive;

import java.util.Random;

import net.minecraft.entity.passive.EntityAnimal;
import net.minecraft.item.ItemStack;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

import com.legacy.aether.blocks.BlocksAether;
import com.legacy.aether.items.ItemsAether;

public abstract class EntityAetherAnimal extends EntityAnimal
{

	Random random = new Random();

	public EntityAetherAnimal(World worldIn) 
	{
		super(worldIn);
		this.spawnableBlock = BlocksAether.aether_grass;
	}

	@Override
    public float getBlockPathWeight(BlockPos pos)
    {
    	return this.worldObj.getBlockState(pos.down()).getBlock() == this.spawnableBlock ? 10.0F : this.worldObj.getLightBrightness(pos) - 0.5F;
    }

	public boolean isBreedingItem(ItemStack stack)
    {
        return stack.getItem() == ItemsAether.blue_berry;
    }

}