repaired the motherfucking hold note problem which troubled us longer than 2 months

added some UI

Assets/scripts/gamePlay_gameplay/InputManager.cs

@@ -6,15 +6,8 @@ public class InputManager : MonoBehaviour
     public static event Action<KeyCode> OnKeyPressed;
     public static event Action<KeyCode> OnKeyReleased;
 
-    // 存储当前帧所有按下的按键
-    private KeyCode[] pressedKeysThisFrame = new KeyCode[5];
-    private int pressedKeyCount = 0;
-
     private void Update()
     {
-        pressedKeyCount = 0;
-
-        // 检查所有可能的按键
         foreach (string color in new string[] { "red", "green", "yellow", "purple", "blue" })
         {
             KeyCode key = KeyBindingManager.GetKeyForColor(color);
@@ -22,31 +15,12 @@ public class InputManager : MonoBehaviour
 
             if (Input.GetKeyDown(key))
             {
-                // 记录当前帧按下的所有按键
-                pressedKeysThisFrame[pressedKeyCount++] = key;
                 OnKeyPressed?.Invoke(key);
+                // 调用 JudgeManager 统一判断最早的音符
+                JudgeManager.Instance.JudgeEarliestNote(key);
             }
             if (Input.GetKeyUp(key))
-            {
                 OnKeyReleased?.Invoke(key);
-            }
-        }
-
-        // 处理多键同时按下
-        if (pressedKeyCount > 1)
-        {
-            HandleMultiKeyPress();
         }
     }
-
-    private void HandleMultiKeyPress()
-    {
-        // 对当前帧所有按下的按键进行处理
-        for (int i = 0; i < pressedKeyCount; i++)
-        {
-            KeyCode key = pressedKeysThisFrame[i];
-            // 调用 JudgeManager 统一判断对应按键的音符
-            JudgeManager.Instance.JudgeEarliestNote(key);
-        }
-    }
-}
+}