添加一些注释、优化代码显示

src/scenes/base_scene.py

@@ -2,15 +2,27 @@ import pygame
 
 class BaseScene:
     def __init__(self, screen: pygame.Surface, clock: pygame.time.Clock):
+        """
+        初始化场景，接收并保存画布、计时器
+        """
         self.screen = screen
         self.clock = clock
         self.next_scene = None
 
     def update(self):
+        """
+        场景的每帧更新逻辑
+        """
         pass
 
     def handle_event(self, events):
+        """
+        接收主循环传来的事件并处理
+        """
         pass
 
     def switch_to_scene(self, scene_class):
+        """
+        切换场景
+        """
         self.next_scene = scene_class(self.screen, self.clock)