private void ChaseToRoam()
 {
     _state      = PatrolEnemyState.Roam;
     _chaseTimer = _chaseTime;
 }
 private void RoamToSearch()
 {
     _state       = PatrolEnemyState.Search;
     _searchTimer = _searchTime;
 }
 private void AnyToChase()
 {
     _state       = PatrolEnemyState.Chase;
     _searchTimer = _searchTime;
     _indicator.Alerted();
 }
 private void SearchToRoam()
 {
     _state       = PatrolEnemyState.Roam;
     _searchTimer = _searchTime;
 }