NOW WITH shooting! Also a proper (though lame) maze, sort-of finalized kernel (and sort-of finalized tank graphics), and a glowing base to defend.
In answer to what I think was Thomas' question, right now the maze is hard-coded. If I can come up with a good algorithm for generating mazes, I'd really like to do that. If I can't come up with an algorithm that generates high quality mazes, I'll probably just create several by hand. It helps that the game will have walls that can be shot out, so the mazes don't have to be totally perfect.