this project attempts to let a sprite bounce off irregular surfaces. What makes this project special is that the bouncer can rotate around its center, and also around each sensor, simply using copies of the same costume with the rotation axis set to different positions each, thereby enabling it to measure the wall's slope at any point. If it gets stuck somewhere press the green flag to reset it. For some reason it currently does *not* work correctly online all the time. It's supposed to rotate until both sensors touch the surface in order to measure the surface's slope. If it doesn't do that online, you may need to download it. Check the forum thread: http://scratch.mit.edu/forums/viewtopic.php?id=3446
