功能函数更改

game_functions.py

@@ -324,3 +324,25 @@ def ship_aliens_hit(ai_settings, game_stats, scoreb, screen, ship, aliens, bulle
     sleep(0.5)
 
 
+def update_aliens(ai_settings, game_stats, scoreb, screen, ship, aliens, bullets):
+    """
+        更新外星人群中所有外星人的位置
+    """
+    check_fleet_edges(ai_settings, aliens)
+    aliens.update()
+
+    if pygame.sprite.spritecollideany(ship, aliens):
+        """
+        接收俩个实参--检测飞船和外星人是否发生碰撞：发生了---往下走；没发生---返回None
+        """
+        ship_aliens_hit(ai_settings, game_stats, scoreb, screen, ship, aliens, bullets)
+
+    # 检测是否有外星人到达屏幕底部
+    check_aliens_bottom(ai_settings, game_stats, scoreb, screen, ship, aliens, bullets)
+
+
+def check_high_score(game_stats, scoreb):
+    """检查是否诞生了新的最高得分"""
+    if game_stats.score > game_stats.high_score:
+        game_stats.high_score = game_stats.score
+        scoreb.prep_high_score()