how to set Object reference to an instance of an object

Question

I get this error:

NullReferenceException: Object reference not set to an instance of an object Boo.Lang.Runtime.RuntimeServices.Dispatch (System.Object target, System.String cacheKeyName, System.Type[] cacheKeyTypes, System.Object[] args, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory) Boo.Lang.Runtime.RuntimeServices.Dispatch (System.Object target, System.String cacheKeyName, System.Object[] args, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory) Boo.Lang.Runtime.RuntimeServices.Invoke (System.Object target, System.String name, System.Object[] args)

Here's my code

public var myspeed = 3.0;

public var cratePrefab:Transform;

function Update () {

//find out if fire button pressed if(Input.GetButtonDown("Fire1")) { //Create the prefab var crate = Instantiate (cratePrefab, transform.position, Quaternion.identity);

 //add force to the prefab
 crate.Rigidbody.AddForce(transform.forward * 2000);

}

}

What is wrong?

Answer 1

Best Answer

Answer by Mike 3 · Jan 31, 2011 at 04:19 AM

Oh god - evil evil js not giving you an error about this:

crate.Rigidbody.AddForce(transform.forward * 2000);

should be

crate.rigidbody.AddForce(transform.forward * 2000);

It may also be worth doing

var crate : Transform = Instantiate (cratePrefab, transform.position, Quaternion.identity);

so that it stops allowing dynamic function calling on the crate reference

Edit:

I would also use AddRelativeForce so that you can use Vector3.forward instead of transform.forward, should be a little less computationally expensive

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Alex 12 · Jan 31, 2011 at 05:04 AM 0

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thanks this worked

how to set Object reference to an instance of an object

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