def initCarRow(self, row, width, startX, direction = 0, offset = 0, speed = 0): for i in range(4): car = GameObject("images/car_sprites_big.png") car.clips = [] car.image.set_colorkey((0, 0, 0)) # main clip car.clips.append(Rect(startX, 0, width, 35)) car.setPos(i * 150 + offset, self.getYforRow(row)) if direction == 0: car.speed = self.carSpeed else: car.speed = -self.carSpeed if speed != 0: car.speed = speed self.cars.append(car)