Bouncing Balls with Pygame

I have recently played around with Pygame module. It was a fun experience. I decided to use Pygame to write a simple classic bouncing balls simulation.

You can have a look at the code here

The Ball object has methods to detect collisions with walls and other balls; callable method update() to update its position and method draw to redraw. BallWorld is the Game object containing game logics. It contains the list of balls, loop through all balls to update their positions each refresh.

A few things to note:

• Each ball object has a CollisionResponse object. CollisionResponse object contains information on the coming collision: new speed, direction. If the ball is not likely to collide at the moment (not going to collide within a very small EPSILON time), the collision time will be set to infinity.
• Positions of ball objects will be calculated at a fixed time interval (TimeStep) to calibrate ball movements per frame refresh.
• The use of EPSILON number to estimate comparison as we will not have exact numbers when calculating with float type

Have fun !.

Ah, well, it is not actually a game per se, but it is fun to watch all the balls bouncing. You can try to adjust the number of balls, speeds, etc...