优化键盘上下选择菜单，由抬起触发修改为按下触发

src/scenes/main_menu_scene.py

@@ -24,6 +24,11 @@ class MainMenuScene(BaseScene):
         self.secret_keys = ["w","w","s","s","a","d","a","d"]  # 上上下下左右左右
         self.secret_key_compare_num = 0
         self.select_id = 0
+        self.up_status = False
+        self.up_last_status = False
+        self.down_status = False
+        self.down_last_status = False
+
         self.mouse_on_option = False
         self.keyboard_ensure_status = False
 
@@ -52,6 +57,11 @@ class MainMenuScene(BaseScene):
             print("我去，是通关秘籍！")
             self.switch_to_scene("EmptyScene")
 
+        if self.__up():
+            self.select_id -= 1
+        if self.__down():
+            self.select_id += 1
+        self.select_id = self.select_id % len(self.text_rect_list)
         # 显示选项文本
         self.__show_ui()
 
@@ -68,8 +78,13 @@ class MainMenuScene(BaseScene):
         self.mouse_pos = pygame.mouse.get_pos()
         # 更新当前帧鼠标状态
         self.mouse_last_status = self.mouse_status
+        # 更新当前帧上下按键状态
+        self.up_last_status = self.up_status
+        self.down_last_status = self.down_status
 
-        # self.__show(self.select_id)
+        # 调试文本
+        # self.__show(self.up_status)
+        # self.__show(self.up_last_status, (0, 20))
 
     def handle_event(self, event):
         """
@@ -79,9 +94,10 @@ class MainMenuScene(BaseScene):
             keys = pygame.key.get_pressed()  # 获取所有按键状态，用于组合按键判断
             if event.key == pygame.K_ESCAPE:
                 self.exit()  # 退出游戏
-            elif keys[pygame.K_z] and keys[pygame.K_x]:  # 同时按下Z和X
+            if keys[pygame.K_z] and keys[pygame.K_x]:  # 同时按下Z和X
                 self.button_status = True
-            elif event.key == pygame.K_SPACE or event.key == pygame.K_RETURN:
+            # 处理空格和enter
+            if event.key == pygame.K_SPACE or event.key == pygame.K_RETURN:
                 self.keyboard_ensure_status = True
             else:
                 self.keyboard_ensure_status = False
@@ -92,12 +108,18 @@ class MainMenuScene(BaseScene):
             else:
                 self.secret_key_compare_num = 0
 
+            # 处理上下键
+            if event.key == pygame.K_UP or event.key == pygame.K_w:
+                self.up_status = True
+            if event.key == pygame.K_DOWN or event.key == pygame.K_s:
+                self.down_status = True
+
         if event.type == pygame.KEYUP:
-            if event.key == pygame.K_w or event.key == pygame.K_UP:
+            # 处理上下键
-                self.select_id -= 1
+            if event.key == pygame.K_UP or event.key == pygame.K_w:
-            elif event.key == pygame.K_s or event.key == pygame.K_DOWN:
+                self.up_status = False
-                self.select_id += 1
+            if event.key == pygame.K_DOWN or event.key == pygame.K_s:
-            self.select_id = self.select_id % len(self.text_rect_list)
+                self.down_status = False
 
         # 鼠标事件
         if event.type == pygame.MOUSEBUTTONDOWN:
@@ -116,6 +138,23 @@ class MainMenuScene(BaseScene):
                 return True
         return False
 
+    def __up(self):
+        """
+        判断是否按下上键：按下时，上一帧的状态是未按下则判断为按下
+        """
+        if self.up_status:
+            if not self.up_last_status:
+                return True
+        return False
+    def __down(self):
+        """
+        判断是否按下下键：按下时，上一帧的状态是未按下则判断为按下
+        """
+        if self.down_status:
+            if not self.down_last_status:
+                return True
+        return False
+
     def __show(self, info, dest=(0, 0)):
         """
         显示调试文本