private void OnTriggerEnter(Collider other)
        {
            SwimTrigger trigger = other.GetComponent <SwimTrigger> ();

            if (StartType == StartType.Automatic && trigger != null)
            {
                this.m_Trigger = trigger;
            }
        }
 private void OnTriggerExit(Collider other)
 {
     this.m_Trigger = null;
 }