I want to try and incorporate the Yato mechanics from Fates into the GBA games, where there are multiple stages of a sacred weapon. Is there a way to do this that exists?
should certainly be possible, especially considering that at most you just need to make a different weapon for each of the stages, and then replace the weapon with its upgraded stage each time its upgraded.
Yes, this. Should be fairly short assembly code to loop through all inventories and the storage to replace all instances of one iitemID with a different one.
So does it already exist? I have zero asm experience.