How do you make a procedure where it'll detect items in another item's GUI even when it's closed?

Started by RedDude9999TheDerp on

Topic category: Help with Minecraft modding (Java Edition)

Joined Mar 2022
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How do you make a procedure where it'll detect items in another item's GUI even when it's closed?

I'm trying to make a weapon with a GUI where you can place items in the slots to gain buffs, but i'm not sure how to forever detect if the item is there or not, anyone know how to do this?