This student wants her “astro” sprite to lose ONE point when touching the “alien” sprite but it loses more points than just one. We figure this is happening because it loses a point for each instance while the alien passes THROUGH the astro. We tried the "istouching,“bounce,” “bounceoff,” and “collide.” Those do help with making the score only go up by 1 but she wants the alien to continue back and forth on the same y axis. We are trying to get it so the astro just recognizes the touch on the EDGE of the alien. We think we need to use the “set collider” for the alien but don’t know how to do that!
Here’s a post with some ideas and example code: