画面重绘及部分操作

game_functions.py

@@ -95,3 +95,48 @@ def check_keyup_events(event, ship):
         ship.moving_left = False
 
 
+def check_play_button(ai_settings, screen, game_stats, scoreb, play_button, ship,
+                      aliens, bullets, mouse_x, mouse_y):
+    """
+        在玩家单击Play按钮时开始游戏
+    """
+    button_clicked = play_button.button_rect.collidepoint(mouse_x, mouse_y)
+    # 单击Play按钮且游戏处于非活跃状态时----避免了游戏处于活跃状态下单击到了Play按钮区域重启游戏
+    if button_clicked and not game_stats.game_active:
+        """如果鼠标单击位置在msg_image_rect范围内则将游戏置于活跃状态"""
+
+        # # 重置游戏设置
+        ai_settings.initialize_dynamic_settings()
+
+        # 游戏开始后Play按钮隐藏起来
+        pygame.mouse.set_visible(False)
+
+        start_game(ai_settings, screen, ship, bullets, game_stats, scoreb, aliens)
+
+
+def check_events(ai_settings, screen, game_stats, scoreb, play_button, ship, aliens, bullets):
+    """
+        响应鼠标和键盘事件
+    """
+    # 游戏退出并把最高分写入文件
+    for event in pygame.event.get():
+        if event.type == pygame.QUIT:
+            with open('Max_score.json', 'w', encoding='UTF-8') as file:
+                json.dump(game_stats.high_score, file)
+            sys.exit()
+
+        # 响应Play按钮操作
+        elif event.type == pygame.MOUSEBUTTONDOWN:
+            mouse_x, mouse_y = pygame.mouse.get_pos()   # 该函数返回一个元组--获取鼠标单击Play按钮时的位置
+            check_play_button(ai_settings, screen, game_stats, scoreb, play_button, ship,
+                              aliens, bullets, mouse_x, mouse_y)
+
+        # 判读飞船向左还是向右移动
+        elif event.type == pygame.KEYDOWN:
+            check_keydown_events(event, ai_settings, screen, ship, bullets, game_stats, scoreb, aliens)
+
+        # 飞船停下
+        elif event.type == pygame.KEYUP:
+            check_keyup_events(event, ship)
+
+