I think... if I've done everything I did so far correctly, I should have a level 1 grid of tiles, it's just not visible yet and you can't interact with it in any way, so I have no idea if it actually does what I want it to do yet XD
To show an image like with @screen.showpokemon but one that's not necessarily the texture of a Pokémon, like the fossils at Pewter City, which I've also added textures for. Arguments in the title of this commit between brackets are optional.