BouncyBall
SqueakSource3 project page
A BouncyBall is a ball, which bounces inside an owner area.
BouncyBall-MJK.4.mcz
BouncyBall-MJK.3.mcz
BouncyBall-MJK.2.mcz
BouncyBall-MJK.1.mcz