public override void OnDestory()
 {
     base.OnDestory();
     m = null;
     r = null;
     c = null;
 }
 public override void Start()
 {
     m = (obj as GameObject3d).material as SpeedAndCollideEffect;
     r = obj.GetBehavior <Rigidbody>() as Rigidbody;
     c = obj.GetBehavior <Collider>() as Collider;
 }