更新 'ship.py'

ship.py

@@ -50,3 +50,7 @@ class Ship(Sprite):
         """让飞船在屏幕上居中"""
         self.center = self.screen_rect.centerx
         self.centery = self.screen_rect.bottom
+
+    def blitme(self):
+        """在指定位置绘制飞船"""
+        self.screen.blit(self.image, self.rect)