Remove flag "affect_ball".
Paddle speed is always take into considreation on collision.

Add deceleration, when ball stops, point is lost by he who have the ball.

Andrea
Remove keys to speed or slow down the ball.

Andrea
Fix collision detection.

Andrea
Add simple goal effects.

Andrea
Remove debug option, when the initial randomness was zeroed.

Andrea
Only run goal effects after a goal, and not at start too.

Andrea