As I said, Bounding Box collision is made with OverlapRect routine, so you can say that PowerDraw has it. Talking about Object Engine - think of it, as it doesn't have it, since it's buggy and doesn't work (setting Xpos of an object gives stack overflow ops: ). If there's interest, I might upload fixed Object Engine... you'll still need a good example though on how to use it (unless you're wiling to experiment by yourself), which is under development now...