well it was pretty damn slow on the calculator, but actually it didn't run as slowly as I'd though it would. And thank you for your kind words. I worked on the graphics for a while. I actually directly copied them from the picture I have on my calculator (I didn't lose that) so it's essentially what it would have looked like on the ti screen.

talmantel: forgot to say this: go to the "support" tab on this website and click on the link to the greenfoot discussion forum.

You should ask these questions on the discussion forum, but I'll answer for you. I think the problem is that you don't have transparency in your image.

I tried that. change it in the source and then see what happens. what's happened to me when i tried that is this: you can run both directions, but then when you shoot to the right, it shoots right and then shoots left. it's as if "f" is getting set to false when you shoot.