Hi, I'm very new to unity and javascript and trying to create a grid based tile system. Please be gentle :)

I have created a 10x10 grid of tiles and attached the follow code to each. I can highlight the tile (red) when the mouse cursor is over it and select the tile (green) when clicked on, however I would like to deselect any other tiles selected before selecting a new one to have just one tile selected at a time. Hope that makes sense :)

 var origTileColor : Color;
 var tileSelected = false;
 
 function OnMouseOver () {
     if(Input.GetMouseButtonDown(0)) {
         tileSelected = true;
         Debug.Log(transform.position);
     }
     
     if(tileSelected) {
         renderer.material.color = Color.green;
     }else{
         renderer.material.color = Color.red;
     }
 }
 
 function OnMouseExit() {
     if(!tileSelected) {
         renderer.material.color = origTileColor;
     }
 }

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Thanks for the tips guys, I decided to rethink my code and found something that works however, I'm having some problems implementing a hover color change when the mouse is over a tile. Any help would be great.

 var myTiles : GameObject[];
 
 myTiles = GameObject.FindGameObjectsWithTag("Tile");
 
  
 function Update () {
 
     if (Input.GetButtonDown ("Fire1")) {
     
          var ray : Ray = Camera.main.ScreenPointToRay(Input.mousePosition);
          
         var select : RaycastHit;
  
         if (Physics.Raycast (ray, select, 100.0)){
         
             for (var thisTile in myTiles){
             
                 if(select.collider.gameObject == thisTile){
                 
                     thisTile.renderer.material.color = Color.green;
                     Debug.Log(thisTile);
                     
                 }else{
                 
                     thisTile.renderer.material.color = Color.white;
                 
                 }
             }
         }
     }
 }