Update TimerMgr.cs

Assets/TEngine/Runtime/Core/TimerMgr.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using UnityEngine;
 
 namespace TEngine
@@ -413,5 +414,37 @@ namespace TEngine
             UpdateTimer();
             UpdateUnscaledTimer();
         }
+
+        private List<System.Timers.Timer> _ticker = new List<System.Timers.Timer>();
+        public System.Timers.Timer AddSystemTimer(Action<object,System.Timers.ElapsedEventArgs> callBack)
+        {
+            var timerTick = new System.Timers.Timer();
+            int interval = 1000;
+            timerTick = new System.Timers.Timer(interval);
+            timerTick.AutoReset = true;
+            timerTick.Enabled = true;
+            timerTick.Elapsed += new System.Timers.ElapsedEventHandler(callBack);
+
+            _ticker.Add(timerTick);
+
+            return timerTick;
+        }
+
+        protected override void OnDestroy()
+        {
+            DestroySystemTimer();
+            base.OnDestroy();
+        }
+
+        private void DestroySystemTimer()
+        {
+            for (int i = 0; i < _ticker.Count; i++)
+            {
+                if (_ticker[i] != null)
+                {
+                    _ticker[i].Stop();
+                }
+            }
+        }
     }
 }