###Mouse Control (one example - mouse click)


while ball1.y> 0.:
#####################
##Use a scene.mouse.clicked event inside the main loop
    if scene.mouse.clicked:
####put the code you want to run on mouse click here
### Watch the alignment!
        ball1.pos = ball1.pos + ball1.velocity*dt
        ball1.velocity = ball1.velocity+ball1.acceleration*dt

        ball2.pos = ball2.pos + ball2.velocity*dt
        ball2.velocity = ball2.velocity+ball2.acceleration*dt