How to disable an array of projectors

Question

So I have difficulties in understanding how does all the array things work. I am trying to disable a bunch of projectors with the same tag whenever I click the mouse. The code that I used gives me this error: 'enabled' is not a member of 'UnityEngine.Projector[]'. Any help would be appreciated.

Here is the code

 private var allProj : Projector[];
 private var buildingProjections : GameObject[];
 
 function Start () {
 buildingProjections = GameObject.FindGameObjectsWithTag("BuildingProjections");
 
 for(var i : int = 0; i < buildingProjections.Length; i++)
 allProj[i] = buildingProjections[i].GetComponent(Projector);
 }
 
 function Update () {
         if (Input.GetButtonDown("Shoot"))
         {
         for(var go : Projector in allProj)
         {
         allProj.enabled = false;
         }
         }
 }

I tried changing this line:

         for(var go : Projector in allProj)
         {
         allProj.enabled = false;
         }

to this:

     for(var i : int = 0; i < allProj.Length; i++){
     allProj[i].enabled = false;
     }

but then it just gave me an error when I clicked the mouse.

Answer 1

Best Answer

Answer by fafase · Mar 02, 2014 at 08:29 PM

I think your problem comes from the fact you are not initializing your Projector array.

 private var allProj : Projector[];

this is just a pointer meant to be used with an array of projector but you still need to tell how big this should be.

 private var allProj : Projector[];
 private var buildingProjections : GameObject[];
  
 function Start () {
 // Here the array is created inside the method and the pointer is pointing at that array
 buildingProjections = GameObject.FindGameObjectsWithTag("BuildingProjections");
 
 // Here you need to tell how many spots your array should have:
 allProj = new Projector[buildingProjections.Length];
 for(var i : int = 0; i < buildingProjections.Length; i++)
    allProj[i] = buildingProjections[i].GetComponent(Projector);
 }

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TomatoOrgyLT · Mar 03, 2014 at 03:39 PM 0

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Thank you very much! That solved my problem.

Answer 2

Answer by MakeCodeNow · Mar 02, 2014 at 06:50 PM

The original problem is that it should have been written like this:

 for(var go : Projector in allProj)
 {
     go.enabled = false;
 }

It's also possible that your array has null entries in it, maybe that's the cause of the issue in the last block. In that case you can try this:

 for(var go : Projector in allProj)
 {
     if(go)
     {
         go.enabled = false;
     }
 }

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TomatoOrgyLT · Mar 02, 2014 at 08:23 PM 0

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Thanks for correcting my code and it does look like my array has null entries. Something is wrong with this line of code

 for(var i : int = 0; i < buildingProjections.Length; i++) {
 allProj[i] = buildingProjections[i].GetComponent(Projector);
 }

because it can not assign any projectors. Any ideas what could be wrong?

How to disable an array of projectors

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