'Creates collideable, invisible rectangles over top of the ground for
sprites to walk on'

def setup_ground(self):

    ground_rect1 = collider.Collider(0, c.GROUND_HEIGHT, 2953, 60)
    ground_rect2 = collider.Collider(3048, c.GROUND_HEIGHT, 635, 60)
    ground_rect3 = collider.Collider(3819, c.GROUND_HEIGHT, 2735, 60)
    ground_rect4 = collider.Collider(6647, c.GROUND_HEIGHT, 2300, 60)
    self.ground_group = pg.sprite.Group(ground_rect1, ground_rect2, ground_rect3, ground_rect4)
