功能函数更改

game_functions.py

@@ -295,3 +295,54 @@ def check_aliens_bottom(ai_settings, game_stats, scoreb, screen, ship, aliens, b
             break
 
 
+ef ship_aliens_hit(ai_settings, game_stats, scoreb, screen, ship, aliens, bullets):
+    """
+        响应外星人飞船相撞的后续操作
+    """
+    # 外星人飞船相撞时 发出碰撞声音 ship_left减1
+    if game_stats.ships_left > 0:
+        music.voice_large()
+        game_stats.ships_left -= 1
+
+        # 更新屏幕上飞船的艘数
+        scoreb.prep_ships()
+
+    else:
+        game_stats.game_active = False
+        ai_settings.increase_wen()      # 游戏结束后alien的速度得回到最初为
+        pygame.mouse.set_visible(True)  # 游戏结束后Play按钮显示出来
+
+    # 清空外星人列表和子弹列表
+    aliens.empty()
+    bullets.empty()
+
+    # 创建一群新的外星人并将飞船重新出现在屏幕在底部中央
+    create_fleet(ai_settings, screen, ship, aliens)
+    ship.center_ship()
+
+    # 暂停让用户反应一会
+    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()