Works in Unity, but can't be build

Questions & Answers
1

Hey guys, I kinda have a very confusing problem here.

I use following script for experiment purposes:

var objectPrefab : Transform;

function Update()
{
    var count = Input.touchCount;

    for (i=0;i<count;i++)
    {
        var touch : Touch = Input.GetTouch(i);

        if (touch.phase == TouchPhase.Began) {
            var testObject = Instantiate (objectPrefab, transform.position, Quaternion.identity);
            testObject.rigidbody.AddForce (transform.forward *2000);
        }
    }   
}

The script is attached to the camera, co u can shoot objects from the camera if you touch the screen. And in the Unityplayer, with unity remote it works like a charm. But when I try to build it I get:

Assets/Scripts/Joystick 1.js(13,31): BCE0019: 'rigidbody' is not a member of 'UnityEngine.Object'.

and

Error building Player because scripts had compiler errors UnityEditor.HostView:OnGUI()

Why does it work in the player, but doesnt build itself? When I click on the error he shows me the "testObject.rigidbody.AddForce (transform.forward *2000);" Line.

2

I'm not an iPhone developer (i'm a win. user) but i read somewhere that you have to use strict typing on iPhone but i'm not sure about that. Anyways, this error looks like that's what you have to do. Instantiate returns always a reference of type UnityEngine.Object. The real type is of course Transform but that's figured out at runtime due to dynamic typing. Try this:

var testObject : Transform = Instantiate (objectPrefab, transform.position, Quaternion.identity) as Transform;
testObject.rigidbody.AddForce (transform.forward *2000);

EDIT

In UnityScript (as far as i know) the “as-cast” is the only way to do an explicit cast. In C# you also have the C-style casting:

Transform testObject = (Transform)Instantiate (objectPrefab, transform.position, Quaternion.identity);

For more information on scripting in general and casting see this reference:

http://answers.unity3d.com/questions/5507/what-are-the-syntax-differences-in-c-and-javascript