This is a simple physics engine built using the OpenCV library in Python. The engine simulates the collision between balls and walls, and it also adds a fun twist by animating the color of the balls upon collision.

To run a simulation use the run function from the engine.py file. It takes a list of objects, which are instances of either Ball class or Wall class, the title, and some animation parameters like screen size etc.

from engine import run
run(
    objects, 
    "Animation1", 
    (height * unit_length, width * unit_length, 3),
    10.0,
    120,
    unit_length,
)

You can create a scene using walls and populate it with moving objects to simulate real world motion.