Yet Another Pong

Keys====Up: Move paddle upDown: Move paddle downR+L: Toggle AIA: Serve after point against playerStart: PauseFeatures========(i) Smiley face Pong Ball tells you whether you are winning or losing(ii) Four forms of AI a) First form (0) does not move b) Second form (1) simply moves up and down c) Third form (2) follows the ball when the ball is going at the paddle. Otherwise returns to a central position. d) Fourth form (3) follows the ball no matter what.