It could aim with the mouse pointer. It's a little trick to shoot in diagonal, because you can't stop moving. Overall, nice game!
That was the original concept, but I couldn't get the art to line up currently. Thanks for the feed back.
Oh... I see! If you don't mind, try this:
You'll probably want to change the zeros for something like 0.1 or 0.2 to give some space between each side. Then, it should be easy to adjust with your current code. :)
I'll give that a shot. Thanks.