Gathering GameObjects and then creating a button for each GameObject??

Here's an answer from another question that shows how to draw a GUI Button for each item in an array of custom objects.

This was for a person who was writing a game where you were supposed to find a bunch of items. Once you find them, they disappear from a list on the screen.

This is meant to be a simple example. It demonstrates how to create a custom class named SearchObject. It then deomonstrates how to create an array of SearchObjects and finally how to loop over the array in the OnGUI function and draw a button for each one.

In this example, when the button is clicked, the button is removed from the list.

This also happens to demonstrate how to use a ScrollView.

If you play with this script, you'll see a variable named "Search Item List" in the Inspector. This script popuplates that list in the Start function as a test. You could remove the Start function and populate the list with whatever you want by using the Inspector.

Hope this helps. Let me know if you have any questions.

/* an array of SearchObjects */

 searchItemList[0] = new SearchObject("Grenade");    
 searchItemList[1] = new SearchObject("Bunny Slippers");
 searchItemList[2] = new SearchObject("Flame Thrower");
 searchItemList[3] = new SearchObject("Lollypop");
 searchItemList[4] = new SearchObject("Bucket of Chicken");
 searchItemList[5] = new SearchObject("Magnifying Glass");

 var theRect : Rect = buttonRect;

 /* loop through each SearchObject in the array */

 for ( var thisItem : SearchObject in searchItemList ) {

     /* skip items that have been found */

     if ( thisItem.isFound ) {
         continue;
     }

     /* draw a button for each SearchObject in the array */

     if ( GUI.Button(theRect, thisItem.name) ) {
         thisItem.isFound = true;
     }

     /* advance the rectangle for the next button */

     theRect.y += theRect.height;
 }

 GUI.EndScrollView();

 function SearchObject ( theName : String )
 {
     name    =  theName;
     isFound =  false;
 }

 // This is the array list of Train

var searchItemList : SearchObject [];

var scrollRect : Rect = Rect(660, 155, 166, 450); var itemRect : Rect = Rect(0, 0, 200, 12500); var buttonRect : Rect = Rect(1, 0, 150, 25); var scrollPos : Vector2 = Vector2.zero;

var Trains = new Array(); var TrainType : GameObject; var TrainReturnType : GameObject;

var GUIUpdate = 2; //How long before the GUI is updated

var TrainNextID = 0;

var Train01Speed = -1; var Train02Speed = -1; var Train03Speed = -1; var Train04Speed = -1;

var Train05Speed = -1; var Train06Speed = -1; var Train07Speed = -1; var Train08Speed = -1;

// GUI Inteface var EditNetworkUI = false; var newTrain = false; var LoadTrain = false; var newTrainName : String = "";

function Start() { var Train : GameObject; var TrainReturn : GameObject; searchItemList = new SearchObject [500];

 Train = Instantiate(TrainType);    
 Trains.Add(Train);
 Train.name = "Train " + TrainNextID;
 searchItemList[TrainNextID] = new SearchObject("Train " + TrainNextID);
 TrainNextID ++;
 
 TrainReturn = Instantiate(TrainReturnType);    
 Trains.Add(TrainReturn);
 TrainReturn.name = "Train " + TrainNextID;
 searchItemList[TrainNextID] = new SearchObject("Train " + TrainNextID);
 TrainNextID ++;
 
 InvokeRepeating("UpdateGUI", 1, GUIUpdate);
 
 yield WaitForSeconds(12);
 Train = Instantiate(TrainType);
 Trains.Add(Train);
 Train.name = "Train " + TrainNextID;
 searchItemList[TrainNextID] = new SearchObject("Train " + TrainNextID);
 TrainNextID ++;
 
 TrainReturn = Instantiate(TrainReturnType);    
 Trains.Add(TrainReturn);
 TrainReturn.name = "Train " + TrainNextID;
 searchItemList[TrainNextID] = new SearchObject("Train " + TrainNextID);
 TrainNextID ++;
 
 yield WaitForSeconds(12);
 Train = Instantiate(TrainType);
 Trains.Add(Train);
 Train.name = "Train " + TrainNextID;
 searchItemList[TrainNextID] = new SearchObject("Train " + TrainNextID);
 TrainNextID ++;
 
 TrainReturn = Instantiate(TrainReturnType);    
 Trains.Add(TrainReturn);
 TrainReturn.name = "Train " + TrainNextID;
 searchItemList[TrainNextID] = new SearchObject("Train " + TrainNextID);
 TrainNextID ++;
 
 yield WaitForSeconds(12);
 Train = Instantiate(TrainType);
 Trains.Add(Train);
 Train.name = "Train " + TrainNextID;
 searchItemList[TrainNextID] = new SearchObject("Train " + TrainNextID);
 TrainNextID ++;
 
 TrainReturn = Instantiate(TrainReturnType);    
 Trains.Add(TrainReturn);
 TrainReturn.name = "Train " + TrainNextID;
 searchItemList[TrainNextID] = new SearchObject("Train " + TrainNextID);
 TrainNextID ++;

}

function Update() { if(Input.GetKeyDown(KeyCode.B)) { if(EditNetworkUI == false) { EditNetworkUI = true; } else { EditNetworkUI = false; } } }

function UpdateGUI() { var Train01 = GameObject.Find("Train 0"); // Get the train var Train02 = GameObject.Find("Train 1"); // Get the train var Train03 = GameObject.Find("Train 2"); // Get the train var Train04 = GameObject.Find("Train 3"); // Get the train

 var Train05 = GameObject.Find("Train 4"); // Get the train
 var Train06 = GameObject.Find("Train 5"); // Get the train
 var Train07 = GameObject.Find("Train 6"); // Get the train
 var Train08 = GameObject.Find("Train 7"); // Get the train
 
 Debug.Log("GUI has been updated!");
 
 Train01Speed = Train01.GetComponent("Train").Speed;
 Train02Speed = Train02.GetComponent("TrainReturn").Speed;
 Train03Speed = Train03.GetComponent("Train").Speed;
 Train04Speed = Train04.GetComponent("TrainReturn").Speed;
 Train05Speed = Train05.GetComponent("Train").Speed;
 Train06Speed = Train06.GetComponent("TrainReturn").Speed;
 Train07Speed = Train07.GetComponent("Train").Speed;
 Train08Speed = Train08.GetComponent("TrainReturn").Speed;

}

function OnGUI() {

 if(Train01Speed >= 0)
 {
     GUI.Box(Rect(15,10,150,25), Train01Speed + "m/s");
 }
 
 if(Train02Speed >= 0)
 {
     GUI.Box(Rect(15,35,150,25),Train02Speed + "m/s");
 }
 if(Train03Speed >= 0)
 {
     GUI.Box(Rect(15,60,150,25),Train03Speed + "m/s");
 }
 if(Train04Speed >= 0)
 {
     GUI.Box(Rect(15,85,150,25),Train04Speed + "m/s");
 }
 if(Train05Speed >= 0)
 {
     GUI.Box(Rect(15,110,150,25),Train05Speed + "m/s");
 }
 if(Train06Speed >= 0)
 {
     GUI.Box(Rect(15,135,150,25),Train06Speed + "m/s");
 }
 if(Train07Speed >= 0)
 {
     GUI.Box(Rect(15,160,150,25),Train07Speed + "m/s");
 }
 if(Train08Speed >= 0)
 {
     GUI.Box(Rect(15,185,150,25),Train08Speed + "m/s");
 }
 
 if(EditNetworkUI == true)
 {
     // This is the code for the Interface.
     GUI.Box(new Rect(Screen.width /2 - 250,Screen.height /2 - 300,500,600),"EditNetwork");
     
     if(GUI.Button(Rect(Screen.width /2 - 50, 60, 100, 25), "Load Trains"))
     {
         if(LoadTrain == false)
         {
             LoadTrain = true;
         }
         else
         {
             LoadTrain = false;
         }
     }
     
     if(GUI.Button(Rect(Screen.width /2 - 50, 85, 100, 25), "New Train"))
     {
         if(newTrain == false)
         {
             newTrain = true;
         }
         else
         {
             newTrain = false;
         }
     }
     
     if(GUI.Button(Rect(Screen.width /2 - 50, 110, 100, 25), "Edit Train"))
     {
         // Code to edit an active train
     }
     
     if(LoadTrain == true)
     {
         scrollPos = GUI.BeginScrollView(scrollRect, scrollPos, itemRect);   
         var theRect : Rect = buttonRect;

         for(var thisItem : SearchObject in searchItemList) 
         {         
             if (GUI.Button(theRect, thisItem.name)) 
             {
                 // Nothing yet.
             }
             theRect.y += theRect.height;
         }
         GUI.EndScrollView();
     }
     
 }
 
 
 if(newTrain == true)
 {
     GUI.Label(Rect(Screen.width /2 - 100, 150, 100, 25),"Name:");
     
     newTrainName = GUI.TextField(Rect(Screen.width /2 - 50, 150, 100, 25),newTrainName,10);
     
     if(GUI.Button(Rect(Screen.width /2 + 50, 150, 60, 25),"Create"))
     {
         var Train : GameObject;
         
         Train = Instantiate(TrainType);    
         Trains.Add(Train);
         Train.name = newTrainName + " " + TrainNextID;
         searchItemList[TrainNextID] = new SearchObject(newTrainName + " " + TrainNextID);
         TrainNextID ++;
     }
 }
 

}

class SearchObject { var name : String; var transform : GameObject;

 function SearchObject ( theName : String )
 {
     name = theName;
     transform = GameObject.Find(theName); // Get the train
 }

}