help with door script!

hi i have a problem with a door script. I want the door only opens when I look at it and are near it. now I can open it from the other side of the map: ( And I want to open the door with "fire1"

// Smothly open a door var smooth = 2.0; var DoorOpenAngle = 90.0; var DoorCloseAngle = 0.0; var open : boolean; var enter : boolean;

 //Main function
 function Update (){
 
 if(open == true){
 var target = Quaternion.Euler (0, DoorOpenAngle, 0);
 // Dampen towards the target rotation
 transform.localRotation = Quaternion.Slerp(transform.localRotation, target,
 Time.deltaTime * smooth);
 }
 
 if(open == false){
 var target1 = Quaternion.Euler (0, DoorCloseAngle, 0);
 // Dampen towards the target rotation
 transform.localRotation = Quaternion.Slerp(transform.localRotation, target1,
 Time.deltaTime * smooth);
 }
 
 if(enter == true){
 if(Input.GetKeyDown("f")){
 open = !open;
 }
 }
 }
 
 //Activate the Main function when player is near the door
 function OnTriggerEnter (other : Collider){
 
 if (other.gameObject.tag == "Player") {
 (enter) = true;
 }
 }
 
 //Deactivate the Main function when player is go away from door
 function OnTriggerExit (other : Collider){
 
 if (other.gameObject.tag == "Player") {
 (enter) = false;
 }
 }
 //Deactivate the Main function when player is go away from door
 function OnTriggerExit (other : Collider){
 
 if (other.gameObject.tag == "Player") {
 (enter) = false;
 }
 }