/*
* behaviour if does not find player
* Guard finished the previously patrolled route
* search for route to the end point and patrols
*/
public IEnumerator FinishPatrol()
{
_detector.SeenPlayer = false;
gameObject.layer = 9;
_coneRender.ActivateState(Color.grey);
SetSpeed(PatrolSpeed);
SetGoal(_patrolBehav.ReturnNodeInRouteAt(_patrolBehav.ReturnPatrolRouteLength() - 1));
_routeToGoal = CalculateRouteToDestination();
yield return(StartCoroutine(NavigateToGoal(true)));
}