試圖制作一個(gè)讓我的接球手接住棒球的游戲。如果棒球被接住，則會(huì)在屏幕頂部隨機(jī)出現(xiàn)一個(gè)新棒球。做出更改后，我似乎無法移動(dòng)捕手。該游戲是通過python和pygame制作的。catch.pyimport sysimport pygamefrom pygame.sprite import Groupfrom settings import Settingsfrom catcher import Catcherfrom baseball import Baseballimport game_functions as gfdef run_game():    """Initializes the game, screen, and settings."""    pygame.init()    ai_settings = Settings()    screen = pygame.display.set_mode((ai_settings.screen_width, ai_settings.screen_height))    pygame.display.set_caption("Catch")    catcher = Group()    baseball = Group()    while True:        gf.check_events(catcher)        gf.update_catcher(ai_settings, screen, catcher)        gf.update_baseball(ai_settings, screen, catcher, baseball)        gf.update_screen(ai_settings, screen, catcher, baseball)run_game()baseball.pyimport pygamefrom pygame.sprite import Spriteclass Baseball(Sprite):    """A class to represent a baseball."""    def __init__(self, ai_settings, screen):        super().__init__()        self.screen = screen        self.ai_settings = ai_settings        # Load the baseball image and set its rect attribute.        self.image = pygame.image.load('images/baseball.bmp')        self.rect = self.image.get_rect()        # Start each new baseball at a random position at the top of the screen.        self.rect.x = self.rect.width        self.rect.y = self.rect.height         # Store the alien's exact position.        self.x = float(self.rect.x)        self.y = float(self.rect.y)    def blitme(self):        """Draw the baseball at tis current location."""        self.screen.blit(self.image, self.rect)    def update(self):        """Dropping the baseball."""        self.y += self.ai_settings.baseball_drop_speed        self.rect.y = self.ycatcher.py