Can See Target not working

Hi, all. I'm working on my AI, but I have a problem. I borrowed the CanSeeTarget() : boolean function from the tutorial, but It causes my enemy To rotate at a very fast rate. I was wondering if there was a way to fix this. All help is appreciated.

Here is my code:

 enum s
 {
     Idle,
     Pursuit,
     Shooting
 }    
 var Player : GameObject;
 var walkSpeed : float;
 var runSpeed : float;
 var obstacleAvoidanceLevel : float;
 var patrolChangesInterval : float;
 var shootRange : float;
 var noticeRange : float;
 var showGizmosInEditor : boolean;
 var gun : AIGun;
 
 var Controller : CharacterController;
 
 @HideInInspector
 var state : s;
 
 private var lastChange : float;
 private var moveSpeed : float;
 function Awake()
 {
     patrolChangesInterval += Random.Range(-1.5, 1.5);
     moveSpeed = walkSpeed;
 }    
 function Update()
 {
     
     Controller.Move(-Vector3.up * Time.deltaTime * 10);
     Controller.Move(transform.forward * moveSpeed*Time.deltaTime);
     if(Time.time > lastChange)
     {
         lastChange = Time.time + patrolChangesInterval;
         ChangeDirection();
     }
     
     var hit : RaycastHit;
     if(Physics.Raycast(transform.position, transform.forward, hit, obstacleAvoidanceLevel))
     {
         if(hit.collider.tag != "Player")
         {
             ChangeDirection();
         }
     }
     var dist : float;
     dist = Vector3.Distance(Player.transform.position, transform.position);
     if(dist < noticeRange && dist > shootRange && CanSeeTarget())
     {
         state = s.Pursuit;
         moveSpeed = runSpeed;
     } else if(dist < shootRange && CanSeeTarget())
     {
         state = s.Shooting;
         moveSpeed = 0;
     } else {
         state = s.Idle;
         moveSpeed = walkSpeed;
     }
     if(state != s.Idle)
     {
         transform.LookAt(Player.transform);
         if(state == s.Shooting)
         {
             gun.Shoot();
         }
     }
         
     
 }
 function ChangeDirection ()
 {
     transform.Rotate(Vector3(0, Random.Range(90, 270), 0));
 }
 function CanSeeTarget () : boolean
 {        
     var hit : RaycastHit;
     if (Physics.Linecast (transform.position, Player.transform.position, hit))
         return hit.collider.gameObject == Player;
 
     return false;
 }    
 function OnDrawGizmosSelected () 
 {
     if(showGizmosInEditor)
     {
         Gizmos.color = Color.yellow;
         Gizmos.DrawWireSphere(transform.position, noticeRange);
         Gizmos.color = Color.red;
         Gizmos.DrawWireSphere(transform.position, shootRange);
     

} }