R = Renderer(1000, 500) K = Keyboard() NG = NewGround() ground_display = 500 / R.scale WF = Wheel(NG, 128, -800) # front wheel WB = Wheel(NG, 0, -800) # back wheel C = Car(WB, WF) run = True # main loop while run: R.delay(20) # event handle for event in pygame.event.get(): if event.type == pygame.QUIT: run = False K.check(C) # engine update WF.update(1) WB.update(1) R.lookAt(WF.x, WF.y) c = WB.distance(WF)