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I am trying to do simple throwing of crates and seen this from tornado twins. Here is the script

var speed = 3.0; var
 cratePrefab:Transform;

 function Update ()  {  
 // find out if a fire button is 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);
           } }

and it gets error : "Null Reference exception: Object Reference not set to an instance of an object."

Answer 1

0

You've wrote crate.Rigidbody while the correct is crate.rigidbody (Rigidbody is a type). The correct form is:

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

Remeber also that your crate prefab must have a rigidbody for this to work.

answered Jul 20 '11 at 02:16 PM

aldonaletto
42.5k ● 16 ● 43 ● 202

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Answer 2

0

It doesn't show anything still does the same thing. It is shooting it's just shooting up along with the y axis and it's shooting with an akward interval. Shoots one that doesn't go normal and stops and when second is shot it pushes the first.

answered Jul 20 '11 at 02:02 PM

TheKnight
21 ● 13 ● 14 ● 15

Add comments as comments, not as answers.

Jul 20 '11 at 02:24 PM almo

I cannot seem to add a comment to the replies i get that's why i'm posting as answers

Jul 20 '11 at 02:28 PM TheKnight

Just click the "Add New Comment" button.

Jul 20 '11 at 02:47 PM almo

To me this only seems to work on my posts not for example on aldonaletto post.

Jul 20 '11 at 03:04 PM TheKnight

If it's like that, isn't that a little stupid? Users get downvoted just because they are posting new replies instead of commnents while they can't post.

Jul 21 '11 at 12:00 AM TheKnight

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Answer 3

0

aldonaletto - That did the trick. But in the tutorial I watched it was Rigidbody and it worked. It's case sensitive? In the editor if I write it as Rigidbody it turns blue, if not it doesn't turn any color.

answered Jul 20 '11 at 02:21 PM

TheKnight
21 ● 13 ● 14 ● 15

Yes, Unityscript is case sensitive: Rigidbody is a type, while rigidbody is one of the transform variables. I don't know why the editor didn't turned it to blue - it should, since it's one of the words it "knows" (it's blue in my editor).
NOTE 1: you may notice the crate is always facing the same axis, no matter to what direction it's thrown. Change Quaternion.identity to transform.direction in Instantiate to fix this.
NOTE 2: Unity Answers is different from forums - you must use "Your answer" only to answer to the question; everything else must be posted with the "comment" button in order to not confuse other people (they will think this question have 3 different answers, for instance)

Jul 20 '11 at 02:58 PM aldonaletto

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