Door keeps rotating

I used a js i found for opening and closing a door but every time i press the button to initiate the opening, the doors just keeps spinning without stopping. It even goes through the wall next to it. How do i make it so that the door stops and won't go through the wall once it opens at a certain angle. The js i used is below. I'm using Unity 4.6.

//Make an empty game object and call it "Door" //Rename your 3D door model to "Body" //Parent a "Body" object to "Door" //Make sure thet a "Door" object is in left down corner of "Body" object. The place where a Door Hinge need be //Add a box collider to "Door" object and make it much bigger then the "Body" model, mark it trigger //Assign this script to a "Door" game object that have box collider with trigger enabled //Press "f" to open the door and "g" to close the door //Make sure the main character is tagged "player"

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

private var defaultRot : Vector3; private var openRot : Vector3;

function Start(){ defaultRot = transform.eulerAngles; openRot = new Vector3 (defaultRot.x, defaultRot.y + DoorOpenAngle, defaultRot.z); }

//Main function function Update (){ if(open){ //Open door transform.eulerAngles = Vector3.Slerp(transform.eulerAngles, openRot, Time.deltaTime smooth); }else{ //Close door transform.eulerAngles = Vector3.Slerp(transform.eulerAngles, defaultRot, Time.deltaTime smooth); }

if(Input.GetKeyDown("f") && enter){ open = !open; } }

function OnGUI(){ if(enter){ GUI.Label(new Rect(Screen.width/2 - 75, Screen.height - 100, 150, 30), "Press 'F' to open the door"); } }

//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; } }