Achieving Perpetual Motion

I've got the scripting worked out for my pong game so that touch events are mapped and move the paddle accordingly but with a 0.2 second delay in movement. The next step is to to get the ball moving. I found that I could set the boyancy so that gravity does not effect the ball. Wind is still a problem though as the ball drifts about. Getting the ball to move on it's own is going to be a bit of a problem. I started looking into converting it into an actual vehicle to get the job done, but I haven't had much luck yet. I'll continue to try different methods until I get something worked out. From Dedric Mauriac via bloghud.com