Create objects while running in Unityscript (Unity)

Question

I have a task that I am supposed to create a web based client that allows users to create objects (in my case, furniture) and move them around and so on.

For this, I have created a button. When the button is pressed, I want to create an object, for example, a chair. For educational purposes, a cube works equally well.

The code I have to accomplish this is as following:

    function OnGUI() {

        if(GUI.Button(Rect(Screen.width - 170, Screen.height - Screen.height * 0.98,150,30), string)){

            GUI.Button(Rect(50,50,150,30), "test");

        }
    }

Here, I tried to create a new button, but the goal is to create an object of some sort.

I do not know how to proceed, and I have very little experience in Javascript.

Regards

Nergon · Accepted Answer · 2014-03-18 16:50:43Z

1

Considering you are running based on Unity Documentation for creating objects the correct function need to be called is Instantiate. to do that you need to have a reference of an object you want to create. Example:

    // Instantiates 10 copies of prefab each 2 units apart from each other
var prefab : Transform;//From the inspector drag and drop a prefab object(of any type) on the prefab slot
function Start ()
   {
       for (var i : int = 0;i < 10; i++) 
       {
           Instantiate (prefab, Vector3(i * 2.0, 0, 0), Quaternion.identity);
       }
   }

According to this, your code could be modified as follows:

var prefab : Transform;//From the inspector drag and drop a prefab object(of any type) 
  function OnGUI() {

        if(GUI.Button(Rect(Screen.width - 170, Screen.height - Screen.height * 0.98,150,30), string))
        {
             var aPosition = Vector3(1, 1, 1);//Sets the position in the 3d space we are gonna position the prefab
             Instantiate (prefab, aPosition, Quaternion.identity);

        }
    }

answered Mar 18, 2014 at 16:50

Nergon

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2 Comments

user2990057 Over a year ago

That seemed to work just fine. However, if I want to create a new button (like a menu) when the button is clicked, the instantiate function does not work. Any ideas on how I could achieve that? That is, when the button is pressed, a selectionGrid of buttons is shown...

Nergon Over a year ago

The problem here is that the Instantiate function cannot be used to create GUI.Elements, it requires an object as a parameter. According to your code, as long as you press the first GUI.Button another button of name test will be spawned

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