alien_invasion.py 文件源码

def check_keydown_events(self, event):
        if event.key == pygame.K_RIGHT:
            self.ship.moving_right = True
        elif event.key == pygame.K_LEFT:
            self.ship.moving_left = True
        elif event.key == pygame.K_SPACE:
            self.fire_bullet()
        elif event.key == pygame.K_q:
            sys.exit()
        elif event.key == pygame.K_h:
            self.display_help()