fix: Metronome may get a null AudioSystem.Instance.

2026-05-08 16:28:09 +08:00
parent 9496ae8bec
commit 97fcbe3ce4
1 changed files with 16 additions and 3 deletions
@@ -9,11 +9,16 @@ namespace OCES
    /// </summary>
    public class Metronome : MonoBehaviour
    {
+        bool m_isRegistered;
+        
        void OnEnable()
        {
-            AudioSystem.Instance.OnBeat += OnBeat;
-            AudioSystem.Instance.OnBar  += OnBar;
-            AudioSystem.Instance.OnGrid += OnGrid;
+            if (AudioSystem.Instance != null) RegisterCallBack(); 
+        }
+
+        void Start()
+        {
+            if (!this.m_isRegistered) RegisterCallBack();
        }

        void OnDisable()
@@ -21,6 +26,14 @@ namespace OCES
            AudioSystem.Instance.OnBeat -= OnBeat;
            AudioSystem.Instance.OnBar  -= OnBar;
            AudioSystem.Instance.OnGrid -= OnGrid;
+            this.m_isRegistered = true;
+        }
+
+        void RegisterCallBack()
+        {
+            AudioSystem.Instance.OnBeat += OnBeat;
+            AudioSystem.Instance.OnBar  += OnBar;
+            AudioSystem.Instance.OnGrid += OnGrid;
        }

        static void OnBeat(uint containerId)