Added fullscreen support and wrapped it in a launcher for file selection, courtesy of PickleLauncher (helpful utility for precisely this sort of thing in the Open Pandora scene..)
BTW, I wanted to say that I think that Lua as a first-programming-language for kids is a great idea! So much easier to explain a Lua table to someone than types and so on .. And quite performant, in the end, eh? I've been using MOAI for cross-platform game development, and now your little project is going to get some love in the homebrew sense, too .. what about adding sound at some point?
Appears to be painfully sluggish under X (Raspberry Pi doesn't yet have graphics acceleration there, totally not your fault). Somewhat better under SDL on the framebuffer, but I keyboard input doesn't seem to be working there. I only gave this a really quick go and it's on a wheezy rootfs I prepared, but running a rather old version of the RPi kernel. I'll delve into it in more detail later in the week.
