How do I detect if a game object exist?

Question

In the scene?

btw, i'm using javascript.

Answer 1

Best Answer

Answer by Mike 3 · Sep 04, 2010 at 12:03 AM

If you know the name of the object:

if (GameObject.Find("WhateverItsCalled") != null)
{
    //it exists
}

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Jessy · Sep 04, 2010 at 12:03 AM 2

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!= null is not necessary.

Mike 3 · Sep 04, 2010 at 12:33 AM 3

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No, but it makes it more obvious (Plus I really can't stand the implicit version), and works in both js and c#, so bonus if it ever needs porting

Rodolfo-Rubens · Sep 29, 2015 at 01:04 AM 0

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What if I already have a reference to the gameObject I want and wants to check from this reference? What if I have on my scene thousands of gameObjects with the same name?

UsulPro Rodolfo-Rubens · Sep 29, 2015 at 01:54 AM 0

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You can check it by reference:

  if( gameObjRefs[i]  != null ) {
          // Do smth
     }

adrianodigiovanni · Jul 13, 2017 at 09:26 AM 1

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Why traverse the hierarchy when you can

 using UnityEngine;
 
 public class MyMonoBehaviour : MonoBehaviour
 {
     [SerializeField]
     private GameObject go;
 
     void Start()
     {
         if (go.scene.IsValid()) {
             // go is an instance of an object that's present in the scene
         } else {
             // go is an instance of a prefab
         }
     }
 }

I think hierarchy traver$$anonymous$$ should always be the last resource due to its performance implications.

Answer 2

Answer by dsh · Oct 26, 2014 at 07:07 PM

this works :)

         if (GameObject.Find ("Character(Clone)") != null) {
             Debug.Log ("get one");
         } else {
             Debug.Log ("not there");
         }

thx

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Answer 3

Answer by adrianodigiovanni · Jul 13, 2017 at 09:21 AM

 using UnityEngine;
 
 public class MyMonobehaviour : MonoBehaviour
 {
     [SerializeField]
     private GameObject go;
 
     void Start()
     {
         if (go.scene.IsValid()) {
             // go is an instance of an object that's present in the scene
         } else {
             // go is an instance of a prefab
         }
     }
 }

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Answer 4

Answer by ThinhHB · Oct 25, 2016 at 10:42 AM

Try this :

 var sceneName = testObject.scene.name;
 if (sceneName != null)
 {
     // this object is on scene
 }
 else
 {
     // this object is a prefab, not instantiate on any scene
 }

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Answer 5

Answer by SuperRyn · Jan 16 at 06:00 PM

Im using this to check if the gameObject "pickleThing" is present like this:

if(GameObject.find("pickleThing") == null) { //insert code for showing text "mass extinction" here. }

Also give me the prefab version if this is incompatible with prefabs (also is this compatible with csharp?)

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How do I detect if a game object exist?

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