I have some armor that I am modding. The boots let you float down to the ground slowly. However, you take a lot of damage when you get to the ground. The easiest solution I had to this was to add feather falling to the boots.However, I do not want to add feather falling more than once to prevent lag. So I need to test if the boots have feather falling currently. I have access to the item stack that the boots originated from through this method:

 

@Override
	public void onArmorTick(World world, EntityPlayer player, ItemStack itemStack) {

}

 

but I only see how to add an enchantment to the item stack, and not check if it already has one. I would like to keep all my code in that method if possible.

Call EnchantmentHelper#getEnchantments(ItemStack).
This will return a Map<Enchantment, Integer>. If Map::get(Enchantment) returns null, the enchantment is not present on the itemstack.

Thank you!