- 4 Balls move from left to right
- Ball x is at 1/5 height from the top, with the speed 1 units per frame
- Ball x is at 2/5 height from the top, with the speed 2 units per frame
- Ball x is at 3/5 height from the top, with the speed 3 units per frame
- Ball x is at 4/5 height from the top, with the speed 4 units per frame
Follow two methods:
- Procedurally
- OOP