Problem doing a script.

Question

This is the error message I get.

Assets/Scipt0/Gun.js(22,20): BCE0023: No appropriate version of 'UnityEngine.Object.Instantiate' for the argument list '(UnityEngine.Transform, UnityEngine.Vector3, UnityEngine.Vector3)' was found.

This is my script.

var sparks : Transform;

var ammo : int = 100;

var fireRate : float = 0.2;

private var nextFire : float = 0.0;

function Update () {

 if(Input.Getbutton("Fire1")){
 
     if(Time.time > nextFire){
 
         nextFire = Time.time + fireRate;
         fire();
         
     }
 }

}

function fire(){

 var range = Mathf.Infinity;
 
 var ray = Camera.main.ScreenPointToRay (Input.mousePosition);
 
 var hit : RaycastHit;
 
 if (Physics.Raycast (ray, hit, range)) {
 
     Instantiate(sparks, hit.point, hit.normal); 
 
 }

}

Answer 1

Best Answer

Answer by Zergling103 · Dec 20, 2011 at 01:56 AM

Here:

 var sparks : Transform;
 var ammo : int = 100;
 var fireRate : float = 0.2;
 private var nextFire : float = 0.0;
 
 function Update () {
     if(Input.Getbutton("Fire1") && Time.time > nextFire) {
          nextFire = Time.time + fireRate;
          fire();
     }
 }
 
 function fire() {
     var range = Mathf.Infinity;
     var ray = Camera.main.ScreenPointToRay (Input.mousePosition);
     var hit : RaycastHit;

     if (Physics.Raycast (ray, hit, range)) {
 // --------------------------------------------------------------
         Instantiate(sparks, hit.point, Quaternion.LookRotation(hit.normal)); 
 // --------------------------------------------------------------
     }
 }

:)

Instantiate requres a special rotation structure called a Quaternion be used to describe it's starting rotation. Quaternion.LookRotation() does basically what you intended by figuring out what rotation is requried to look at a point in space when standing at (0,0,0).

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Hannandh · Dec 20, 2011 at 02:00 AM 1

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Thanks dude, I'll make sure not to make the mistake again :P

Zergling103 · Dec 20, 2011 at 02:01 AM 0

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Give me a +1 please :)

Hannandh · Dec 20, 2011 at 02:07 AM 2

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How do I do that? Sorry, I only made this Profile to ask this certain question, I'm new to this, bare with me and I'll give you the +1 if you tell me how, god, I'm such a noob. -_-;

Zergling103 · Dec 20, 2011 at 02:09 AM 0

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See the thumb up icon by my answer? :) That.

Don't worry about looking like a noob. xD

Lo0NuhtiK · Dec 20, 2011 at 02:10 AM 1

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lol ... I'll give you one also

Answer 2

Answer by save · Dec 20, 2011 at 12:51 AM

Instantiate takes three parameters, the object, the position and the rotation. The rotation has to be a quaternion. Is there a reason you're using the normal from hit? Otherwise switch it to Quaternion.identity or the desired Quaternion.Euler(x, y, z).

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Hannandh · Dec 20, 2011 at 01:25 AM 0

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Sorry, I really don't understand this, I'm just learning how to use Unity, I'm not too familiar with scripting or anything.

Problem doing a script.

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