enemyAI

 var Player : Transform;
 var MoveSpeed = 4;

 function Update ()
 {
     transform.LookAt(Player);
     transform.position += transform.forward*MoveSpeed*Time.deltaTime;
 }

   function OnTriggerEnter (other : Collider) {
    if(other.gameObject.tag== "Player")
        other.gameObject.SetActive(false);

}