For my game, I want to make an action RPG. For the inventory system, how complex does it have to be? In my case, I was going to have it so number keys would be for your melee weapon, another for your projectile weapon, and another for your potions or whatever. These weapons could be swapped out whenever you gain a better weapon. Then, crafting items would just be stored as a variable to be used for crafting certain things, but you wouldn't be able to manage the items inside of a GUI. Would something along those lines be acceptable, or would it have to be more in depth?