How to add enchantments to item?

[SirEnder125]

Hey. I want to add an enchantment to my item, so that every ItemStack will have that enchantment. How can I do this? (To be exact, I don't just want hasGlint() to return true, but an actual effect.)

[frqnny]

Look at vanilla’s EnchantmentHelper class

[SirEnder125]

Hmm, okay. Where in the Item class can you make it where an ItemStack is enchanted on creation? Also, what issues might I run in to?

[frqnny]

idk but might want to see if mixin might be able to accomplish it if you can’t find a way.

[SirEnder125]

Hmm. I first tried enchanting the return variable of Item.getDefaultStack(), but the code wasn't called when I got the item from creative menu.

[warjort]

If you want different versions of your item in the creative mode tabs, you need to implement Item.appendStacks().
e.g. add different ItemStacks to the ItemGroup, one with an enchantment and one without.
Take a look at EnchantedBookItem for an example, which adds an ItemStack for each known enchantment.

[warjort]

As for creating an ItemStack with a default enchantment, I don't think Minecraft has a callback for that?
You either have to create the original stack yourself or you can do something in Item.onCraft().

To trap every ItemStack creation, you would need to mixin the tail of the constructors.
But you will get a lot more calls than you probably expect. e.g. copying, transfer over the network, splitting item stacks, etc.