Making opening door requires a Key

I would personally use the trigger events to tell when a player is near the door then you can just call the open or close function.

If you add Debug.Log("Some Text Here"); then while playing the game you can see the text appear in the console when an event is triggered

Can you tell what part of the code isn't working?

     private var open : boolean;
     private var enter : boolean;
     private var defaultRot : Vector3;
     private var openRot : Vector3;
     private var playerInventory : PlayerInventory;  
      
     public var requireKey : boolean; 
     public var doorSwishClip : AudioClip;               
     public var accessDeniedClip : AudioClip;            
      
     function Start(){
     defaultRot = transform.eulerAngles;
     openRot = new Vector3 (defaultRot.x, defaultRot.y + DoorOpenAngle, defaultRot.z);
     }
      
     //Main function
     function Update (){}
      
     function OnGUI(){
     if(enter){
     GUI.Label(new Rect(Screen.width/2 - 75, Screen.height - 200, 150, 30), " ");
     }
     }
      
     function OnTriggerEnter (other : Collider){
 
     Debug.Log("Door Collider Triggered");
 
     if (other.gameObject.tag == "Player") 
     {
        if(playerInventory.hasKey)
          {   
         open();
          }
             else
             {
               audio.clip = accessDeniedClip;
               audio.Play();
              }       
     }
     }
     
     public void open ()
     {
     //Open door
     transform.eulerAngles = Vector3.Slerp(transform.eulerAngles, openRot, Time.deltaTime * smooth);
     }
     
     public void close ()
     {
     //Close door
     transform.eulerAngles = Vector3.Slerp(transform.eulerAngles, defaultRot, Time.deltaTime * smooth);
     }
 

Thank you very much man you are help me alot, I just need one last thing, I'm using an Inventory System from the Asset Store https://www.assetstore.unity3d.com/en/#!/content/10384 And i don't know what to add to my Door Script that check the inventory if it has the key ( that i already looted) I just need to add something to check, if there's let say item called"white_key" then open the door if not don't I hope you could help me with that last thing :) Here's the key Script ( i don't know if that help )

 #pragma strict
 
 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;
 }
 }

And here's the Inventory Script :

 //This is the central piece of the Inventory System.
 
 var Contents : Transform[]; //The content of the Inventory
 var MaxContent : int = 12; //The maximum number of items the Player can carry.
 
 var DebugMode = false; //If this is turned on the Inventory script will output the base of what it's doing to the Console window.
 
 private var playersInvDisplay : InventoryDisplay; //Keep track of the InventoryDisplay script.
 
 static var itemHolderObject : Transform; //The object the unactive items are going to be parented to. In most cases this is going to be the Inventory object itself.
 
 @script AddComponentMenu ("Inventory/Inventory")
 
 //Handle components and assign the itemHolderObject.
 function Awake ()
 {
     itemHolderObject = gameObject.transform;
     
     playersInvDisplay = GetComponent(InventoryDisplay);
     if (playersInvDisplay == null)
     {
         Debug.LogError("No Inventory Display script was found on " + transform.name + " but an Inventory script was.");
         Debug.LogError("Unless a Inventory Display script is added the Inventory won't show. Add it to the same gameobject as the Inventory for maximum performance");
     }
 }
 
 //Add an item to the inventory.
 function AddItem(Item:Transform)
 {
     var newContents = new Array(Contents);
     newContents.Add(Item);
     Contents=newContents.ToBuiltin(Transform); //Array to unity builtin array
     
     if (DebugMode)
     {
         Debug.Log(Item.name+" has been added to inventroy");
     }
     
     //Tell the InventoryDisplay to update the list.
     if (playersInvDisplay != null)
     {
         playersInvDisplay.UpdateInventoryList();
     }
 }
 
 //Removed an item from the inventory (IT DOESN'T DROP IT).
 function RemoveItem(Item:Transform)
 {
     var newContents=new Array(Contents);
     var index=0;
     var shouldend=false;
     for(var i:Transform in newContents) //Loop through the Items in the Inventory:
     {
         if(i == Item) //When a match is found, remove the Item.
         {
             newContents.RemoveAt(index);
             shouldend=true;
             //No need to continue running through the loop since we found our item.
         }
         index++;
         
         if(shouldend) //Exit the loop
         {
             Contents=newContents.ToBuiltin(Transform);
             if (DebugMode)
             {
                 Debug.Log(Item.name+" has been removed from inventroy");
             }
             if (playersInvDisplay != null)
             {
                 playersInvDisplay.UpdateInventoryList();
             }
             return;
         }
     }
 }
 
 //Dropping an Item from the Inventory
 function DropItem(item)
 {
     gameObject.SendMessage ("PlayDropItemSound", SendMessageOptions.DontRequireReceiver); //Play sound
     
     var makeDuplicate = false;
     if (item.stack == 1) //Drop item
     {
         RemoveItem(item.transform);
     }
     else //Drop from stack
     {
         item.stack -= 1;
         makeDuplicate = true;
     }
     
     item.DropMeFromThePlayer(makeDuplicate); //Calling the drop function + telling it if the object is stacked or not.
     
     if (DebugMode)
     {
         Debug.Log(item.name + " has been dropped");
     }
 }
 
 //This will tell you everything that is in the inventory.
 function DebugInfo()
 {
         Debug.Log("Inventory Debug - Contents");
     items=0;
     for(var i:Transform in Contents){
         items++;
         Debug.Log(i.name);
     }
     Debug.Log("Inventory contains "+items+" Item(s)");
 }
 
 //Drawing an 'S' in the scene view on top of the object the Inventory is attached to stay organized.
 function OnDrawGizmos ()
 {
     Gizmos.DrawIcon (Vector3(transform.position.x, transform.position.y + 2.3, transform.position.z), "InventoryGizmo.png", true);
 }