因此，我的代碼中的“bullet（或laser.png）”精靈在運行時不會繪制。我在代碼中破壞了一些東西，試圖解決另一個問題，即精靈留下了痕跡。我嘗試了多種方法，但最終破壞了我的代碼（抱歉，我是 pygame 新手，無論如何，這可能是一個愚蠢的問題）。我之前還定義了所有變量def redrawGameWindow(win, HeroX,HeroY):    win.blit(bg, (0,0))    win.blit(HeroSprite, (HeroX, HeroY))    win.blit(EnemySprite, (EnemyX, EnemyY))    pygame.draw.rect(bg, (211,211,211), (430 - 5, 25 - 5, EnemyHealth + 10, 30 + 10))    pygame.draw.rect(bg, (255,0,0), (430, 25, EnemyHealth, 30))    pygame.draw.rect(bg, (211,211,211), (430 - 5, 665 - 5, EnemyHealth + 10, 30 + 10))    pygame.draw.rect(bg, (0,255,0), (430, 665, PlayerHealth, 30))    pygame.display.update()def fire_bullet(x, y):    global BulletState    BulletState = "fire"    win.blit(Laser, (BulletX,BulletY))while GameRun:    clock.tick(60)    pressed = pygame.key.get_pressed()    EnemyX += EnemyVel    if EnemyX <= 0 :        EnemyVel = 5    elif EnemyX >= winX - 60:        EnemyVel = -5    if pressed[pygame.K_LEFT]:        HeroX -= vel if HeroX > 0 else 0    elif pressed[pygame.K_RIGHT]:        HeroX += vel if HeroX < winX - 57 else 0    if pressed[pygame.K_SPACE]:        if BulletState == "ready" :            BulletX =  HeroX            fire_bullet(BulletX, BulletY)    for event in pygame.event.get():        if event.type == pygame.QUIT:            GameRun = False    if BulletY <= 0:        BulletY = HeroY        BulletState = "ready"    if BulletState == "fire":        fire_bullet(BulletX, BulletY)        BulletY -= BulletVel    redrawGameWindow(win, HeroX, HeroY)pygame.quit()