我很難使用 pygame 創建單個精靈旋轉。我正在按照此代碼（https://stackoverflow.com/a/47688650/5074998）獲取精靈的中心旋轉。這是我當前的代碼：import pygameFPS: int = 100W = 600H = 400MAGENTA = (255, 0, 255)BLACK = (0, 0, 0)pygame.init()screen = pygame.display.set_mode([W, H])pygame.display.set_caption("Cars")clock = pygame.time.Clock()class sp():    def __init__(self):        self.image = pygame.Surface((122, 70), pygame.SRCALPHA)        pygame.draw.polygon(self.image, pygame.Color('dodgerblue1'),                            ((1, 0), (120, 35), (1, 70)))        self.orig_image = self.image        self.rect = self.image.get_rect(center=[W / 2, H / 2])        self.angle = 0    def update(self):        self.angle += 2        self.rotate()        screen.blit(self.image, [100, 100])    def rotate(self):        self.image = pygame.transform.rotozoom(self.orig_image, self.angle, 1)        self.rect = self.image.get_rect(center=self.rect.center)sp1 = sp()out = pause = Falsewhile not out:    clock.tick(FPS)    for event in pygame.event.get():        if event.type == pygame.QUIT or event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:            out = True        if event.type == pygame.KEYDOWN:            if event.key == pygame.K_SPACE:                pause = not pause    if not pause:        screen.fill(BLACK)        sp1.update()        pygame.display.flip()但我不明白為什么我會得到這個：