What you need to do is to go to block and say, "If "Mario" touching, set x .-1. That is the only way I know how to do it. Or if you are using a bunch just go to Mario, have all the blocks the same color and nothing else that color. Then say, "If "Mario" touches color "Grey (for example)" move back -.1 x. IF you have any other questions, just add me to your friends.
Offline