def update_step(
    body_system: BodySystem, delta_time: float, patches: list[plt.Circle]
) -> None:
    # Update the positions of the bodies
    body_system.update_system(delta_time)

    # Update the positions of the patches
    for patch, body in zip(patches, body_system.bodies):
        patch.center = (body.position_x, body.position_y)