In my shooting game http://scratch.mit.edu/projects/26608351/ (Link) there's mutiple walls I don't know how to make it so that when you try to go through those walls that Your guy doesn't look affected at all and keep falling with gravity and velocity I have it so if you hit the wall you just stick on the wall because the variables cancel eachother out. Please help me!

Make sure the game isn't too violent.

It isn't …