I have created a bouncing ball a long time before but it only moves with 45 degrees but I am not in need of the ball now, I need the puck.

I want the puck to be when the ball hits my puck, the ball can bounce back the way it should be. I want to use if-then statements. Is there any codes that can help me set a boundary around the puck's circumference (the puck is a circle) or do I have to set the boundaries of the ball myself, line by line. Thanks!