Algodoo

So, here is new version of cannon. Finnaly.
This is even more automatic, than previous versions - you shouldn't load new shell every time you want to shot.
Just load five shells in to the kind of feed belt and enjoy.

Just tap Enter to fire. One tap - one shot. Do NOT hold it, because trigger depends on laser, not on the killer-body.
Arrow keys to aim Up and Down. Just delete the little holder from rear.