Mhhh, I'm no expert in ActionScript but I am regularly using other codes to simulate these kind of movements. 800 lines for shooting and movement seems far too much (especially since when I tried the beta, it didn't seem to work too well.
Okay, I could have a look at it, see if it can be made smaller. But only come to me if you're really desperate please, because I can guarantee there are much better coders out there.