Turning when not seen.

Hello, I have a Slender script and it works perfectly fine, I just need to adjust it to where the enemy doesn't rotate when it is being seen. Here is the script:

@script RequireComponent( AudioSource )

public var thePlayer : Transform; private var theEnemy : Transform;

public var speed : float = 5.0;

var isOffScreen : boolean = false; public var offscreenDotRange : float = 0.7;

var isVisible : boolean = false; public var visibleDotRange : float = 0.8; // ** between 0.75 and 0.85 (originally 0.8172719)

var isInRange : boolean = false;

public var followDistance : float = 24.0; public var maxVisibleDistance : float = 25.0;

public var increaseDamageAmt : float = 24.5;

public var reduceDistAmt : float = 3.1;

private var sqrDist : float = 0.0;

public var health : float = 100.0; public var damage : float = 20.0;

public var enemySightedSFX : AudioClip;

private var hasPlayedSeenSound : boolean = false;

private var colDist : float = 10.0; // raycast distance in front of enemy when checking for obstacles

function Start() { if ( thePlayer == null ) { thePlayer = GameObject.Find( "Player" ).transform; }

 theEnemy = transform;

}

function Update() { // Movement : check if out-of-view, then move CheckIfOffScreen();

 // if is Off Screen, move
 if ( isOffScreen )
 {
     MoveEnemy();
     
     // restore health
     RestoreHealth();
 }
 else
 {
     // check if Player is seen
     CheckIfVisible();
     
     if ( isVisible )
     {
         // deduct health
         DeductHealth();
         
         // stop moving
         StopEnemy();
         
         // play sound only when the Man is first sighted
         if ( !hasPlayedSeenSound )
         {
             audio.PlayClipAtPoint( enemySightedSFX, thePlayer.position ); 
         }
         hasPlayedSeenSound = true; // sound has now played
     }
     else
     {
         // check max range
         CheckMaxVisibleRange();
         
         // if far away then move, else stop
         if ( !isInRange )
         {
             MoveEnemy();
         }
         else
         {
             StopEnemy();
         }
         
         // reset hasPlayedSeenSound for next time isVisible first occurs
         hasPlayedSeenSound = false;
     }
 }
 

}

function DeductHealth() { // deduct health health -= damage * Time.deltaTime;

 // check if no health left
 if ( health <= 0.0 )
 {
     health = 0.0;
     Debug.Log( "YOU ARE OUT OF HEALTH !" );
     
     // Restart game here!
     // Application.LoadLevel( "sceneLose" );
 }

}

function RestoreHealth() { // deduct health health += damage * Time.deltaTime;

 // check if no health left
 if ( health >= 100.0 )
 {
     health = 100.0;
     //Debug.Log( "HEALTH is FULL" );
 }

}

function CheckIfOffScreen() { var fwd : Vector3 = thePlayer.forward.normalized; var other : Vector3 = (theEnemy.position - thePlayer.position).normalized;

 var theProduct : float = Vector3.Dot( fwd, other );
 
 if ( theProduct < offscreenDotRange )
 {
     isOffScreen = true;
 }
 else
 {
     isOffScreen = false;
 }

}

function MoveEnemy() { // Check the Follow Distance CheckDistance();

 // if not too close, move
 if ( !isInRange )
 {
     rigidbody.velocity = Vector3( 0, rigidbody.velocity.y, 0 ); // maintain gravity
     
     // --
     // Old Movement
     //transform.LookAt( thePlayer );        
     //transform.position += transform.forward * speed * Time.deltaTime;
     // --
     
     // New Movement - with obstacle avoidance
     var dir : Vector3 = ( thePlayer.position - theEnemy.position ).normalized;
     var hit : RaycastHit;
     
     if ( Physics.Raycast( theEnemy.position, theEnemy.forward, hit, colDist ) )
     {
         //Debug.Log( " obstacle ray hit " + hit.collider.gameObject.name );
         if ( hit.collider.gameObject.name != "Player" && hit.collider.gameObject.name != "Terrain" )
         {            
             dir += hit.normal * 20;
         }
     }
 
     var rot : Quaternion = Quaternion.LookRotation( dir );
 
     theEnemy.rotation = Quaternion.Slerp( theEnemy.rotation, rot, Time.deltaTime );
     theEnemy.position += theEnemy.forward * speed * Time.deltaTime;
     //theEnemy.rigidbody.velocity = theEnemy.forward * speed; // Not Working
     
     // --
 }
 else
 {
     StopEnemy();
 }

}

function StopEnemy() { transform.LookAt( thePlayer );

 rigidbody.velocity = Vector3.zero;

}

function CheckIfVisible() { var fwd : Vector3 = thePlayer.forward.normalized; var other : Vector3 = ( theEnemy.position - thePlayer.position ).normalized;

 var theProduct : float = Vector3.Dot( fwd, other );
 
 if ( theProduct > visibleDotRange )
 {
     // Check the Max Distance
     CheckMaxVisibleRange();
     
     if ( isInRange )
     {
         // Linecast to check for occlusion
         var hit : RaycastHit;
         
         if ( Physics.Linecast( theEnemy.position + (Vector3.up * 1.75) + theEnemy.forward, thePlayer.position, hit ) )
         {
             Debug.Log( "Enemy sees " + hit.collider.gameObject.name );
             
             if ( hit.collider.gameObject.name == "Player" )
             {
                 isVisible = true;
             }
         }
     }
     else
     {
         isVisible = false;
     }
 }
 else
 {
     isVisible = false;
 }

}

function CheckDistance() { var sqrDist : float = (theEnemy.position - thePlayer.position).sqrMagnitude; var sqrFollowDist : float = followDistance * followDistance;

 if ( sqrDist < sqrFollowDist )
 {
     isInRange = true;
 }
 else
 {
     isInRange = false;
 }    

}

function ReduceDistance() { followDistance -= reduceDistAmt; }

function IncreaseDamage() { damage += increaseDamageAmt; }

function CheckMaxVisibleRange() { var sqrDist : float = (theEnemy.position - thePlayer.position).sqrMagnitude; var sqrMaxDist : float = maxVisibleDistance * maxVisibleDistance;

 if ( sqrDist < sqrMaxDist )
 {
     isInRange = true;
 }
 else
 {
     isInRange = false;
 }    

}

function OnGUI() { GUI.Box( Rect( (Screen.width * 0.5) - 60, Screen.height - 35, 120, 25 ), "Health : " + parseInt( health ).ToString() ); }