How to get an array of gameobjects that have a certain script attached to them?

Question

Hi, I want to know how to get an array of gameobjects in my scene that have a certain script attached.

I am working on RTS style drag selection, which is working, but and i want to check against all objects with certain script not just with a certain tag.

 void CheckObjects()
 {
     //get array of all selectable objects in game (this done once begining of game for performance
     //create a vector for each that is the camera screen point note should only do this for rendered objects
     foreach (GameObject selectable in selectables)
     {
         if(selectable.GetComponent<Renderer>().isVisible)    //should use variable not getcomponet very frame
         {
             Vector3 camPos; 
             camPos = Camera.main.WorldToScreenPoint(selectable.transform.position);
             camPos.y = CameraOperator.InvertMouseY(camPos.y);
             if(selection.Contains(camPos))
             {
                 selectable.GetComponent<Unit>().selected=true;
             }
             else
                 selectable.GetComponent<Unit>().selected=false;
         }
         
     }
 }

So instead of : selectables = GameObject.FindGameObjectsWithTag("selectable");

some thing like selectable = FindObjectsOfType(typeof(unit)) as unit[]; ?

Answer 1

Answer by andymerck · Mar 16, 2016 at 05:38 PM

ill try that, perhaps i am better off having a game manager that knows of all units?

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Answer 2

Answer by ComradeVanti · Mar 16, 2016 at 05:20 PM

Try something like this:

 GameObject[] getObjects() {
     Script[] scripts = FindObjectsOfType<Script> ();
     GameObject[] objects = new GameObject[scripts.Length];        
         for (int i = 0; i < objects.Length; i++)
         objects [i] = scripts [i].gameobject;
     return objects;
 }

Good luck :D

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andymerck · Mar 16, 2016 at 06:03 PM 0

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That works thank you very much Brullix.

Size not any ideas how you would improve that function so it accepts a string and could then find any script

How to get an array of gameobjects that have a certain script attached to them?

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