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Question by umair_re · Feb 12, 2013 at 11:25 AM · transform.position

object reference not set to an instance of an object

 var speed : float;
 var turn : float;
 
 function Update()
 {
   var targets : GameObject[] = GameObject.FindGameObjectsWithTag("target");
   var closest : GameObject;
   var closestDist = Mathf.Infinity;
   
   for (Target in targets)
   {
     var dist = (transform.position - Target.transform.position).sqrMagnitude;
     
     if(dist < closestDist)
     {
       closestDist = dist;
       closest = Target;
     }    
   }
 
   var newRotation = Quaternion.LookRotation(
     closest.transform.position - closest.position, Vector3.forward);

   transform.rotation = Quaternion.Slerp(
     transform.rotation, newRotation, Time.deltaTime * 8);

   transform.position += transform.forward*speed*Time.deltaTime;
 }
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avatar image umair_re · Feb 12, 2013 at 11:13 AM 0
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var speed : float; var explosion : Transform;

// Find the name of the closest enemy function FindClosestEnemy () : GameObject { // Find all game objects with tag Enemy var gos : GameObject[]; gos = GameObject.FindGameObjectsWithTag("Respawn"); var closest : GameObject; var distance = $$anonymous$$athf.Infinity; var position = transform.position; // Iterate through them and find the closest one for (var go : GameObject in gos) { var diff = (go.transform.position - position); var curDistance = diff.sqr$$anonymous$$agnitude; if (curDistance < distance) { closest = go; distance = curDistance; }}

var newRotation = Quaternion.LookRotation(closest.position - transform.position); transform.rotation = Quaternion.Slerp(transform.rotation, newRotation, Time.deltaTime * 8); transform.position+=transform.forward*speed*Time.deltaTime; }

function OnCollisionEnter(collision : Collision){ Instantiate (explosion, transform.position, transform.rotation); Destroy(gameObject);}

missile not moving

avatar image liszto · Feb 12, 2013 at 12:36 PM 1
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use code block to format otherwise nobody gonna read this !

avatar image $$anonymous$$ · Feb 12, 2013 at 01:20 PM 1
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@umair_re : Dude, put some time and thought into asking your question. If you do so, you will get good answers. And for sure, format your code using 'code block' like @liszto mentioned.

alt text

It'll be nice if you could format and edit your original question ins$$anonymous$$d of reposting a similar thing as a comment as well.

Read FAQ on guidelines for writing good questions?

avatar image Dave-Carlile · Feb 12, 2013 at 03:05 PM 1
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Which line of your code has the error on it? If you double click on the error in the Unity console it should jump to the line with the error. We need to know which line that is.

avatar image umair_re · Feb 13, 2013 at 09:59 AM 0
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NullReferenceException: object reference not set to an instance of an object Boo.Lang.Runtime.RuntimeServices.InvokeBinaryOperator(System.String operatorName, System.Object lhs, System.Objecy rhs)

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Answer by Benproductions1 · Feb 14, 2013 at 10:54 PM

Your not checking wheather or not closest exists. If it doesn't find any objects, closest will be null, therefore the null reference exception.

Thats at least one of the problems...

Hope this helps, Benproductions1

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