I'm looking for a specific book, does anyone remember it?

It was kind of like Percy Jackson, except Egyptian gods, I think? Or maybe not. I remember that they would grab a sword from an imaginary locker. They would have to imagine putting in the combination, open it, and grab the sword.

That's all I remember from it. It was a book I read back in middleshool. I can't for the life of me remember what it's called.