报错信息：
ExecutionEngineException: Attempting to call method 'System.Threading.Interlocked::CompareExchange<MoleMole.LevelBorder+BorderChange>' for which no ahead of time (AOT) code was generated.
06-12 19:34:17.195 10092 10156 E Unity : at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <00000000000000000000000000000000>:0
06-12 19:34:17.195 10092 10156 E Unity : at IFix.Core.ReflectionMethodInvoker.Invoke (IFix.Core.VirtualMachine virtualMachine, IFix.Core.Call& call, System.Boolean isInstantiate) [0x00000] in <00000000000000000000000000000000>:0
06-12 19:34:17.195 10092 10156 E Unity : at IFix.Core.VirtualMachine.Execute (IFix.Core.Instruction* pc, IFix.Core.Value* argumentBase, System.Object[] managedStack, IFix.Core.Value* evaluationStackBase, System.Int32 argsCount, System.Int32 methodIndex, System.Int32 refCount, IFix.Core.Value** topWriteBack) [0x00000] in <00000000000000000000000000000000>:0
06-12 19:34:17.195 10092 10156 E Unity : at IFix.Core.VirtualMachine.Execute (IFix.Core.Instruction* pc,

相应的报错位置
MonoBasicLevel.levelManager.GetLevelBorder().OnGetLevelBorder -= OnGetLevelBorder
其中OnGetLevelBorder是一个定义有ref参数的event
`

	public delegate void BorderChange(ref Vector2 border);

	public event BorderChange OnGetLevelBorder;

`