koobas.hobune.stream
The question is answered, right answer was accepted
Instantiate an object as child
Hello,
I'm trying to make an overlay and i want to instantiate the hearts in the "Overlay" GameObject. I searched on Internet (i actually tried things found in the first two pages of google) but nothing works.
Here is my code :
using UnityEngine;
using System.Collections;
public class Overlay : MonoBehaviour {
public Transform CoeurPlein;
public Transform CoeurVide;
// Use this for initialization
void Start () {
GameObject TCoeurPlein = Instantiate (CoeurPlein, new Vector3 (0,0, 0), Quaternion.identity) as GameObject;
TCoeurPlein.transform.parent = GameObject.Find("Overlay").transform;
}
// Update is called once per frame
void Update () {
}
}
And the error message :
NullReferenceException: Object reference not set to an instance of an object Overlay.Start () (at Assets/script/Overlay.cs:13)
Thanks
The error is there :
TCoeurPlein.transform.parent = GameObject.Find("Overlay").transform;
The fact that there is a NullReferenceException on that line means that GameObject.Find("Overlay") returned null, so you're trying to access the transform of a null object. It appears that there isn't an "Overlay" GameObject in your scene.
When using methods the likes of Find, it's generally a good idea to check if it actually worked.
void Start()
{
GameObject TCoeurPlein = Instantiate(CoeurPlein, new Vector3(0, 0, 0), Quaternion.identity) as GameObject;
GameObject overlayParent = GameObject.Find("Overlay");
if (overlayParent != null)
{
TCoeurPlein.transform.SetParent(overlayParent.transform);
}
}
Thanks for the fast answer :)
I have this : 
I tried to find with tag, but that doesn't work . I tried to find with Find("$$anonymous$$ain Camera/Overlay") that doesn't work either, finding a new gameObject either (with name and tag).
GamObject.Find("Overlay"); works fine for me. $$anonymous$$ake sure you didn't make a typo, maybe your object is actually named "Overlay " (ending with a space), that'd be an easy mistake to overlook.
Evrything is ok with the overlay. I tried with the "if != null "and it got the print i put in it. So the probleme come from the instantiate object (TCoeurPlein). I tried it with the !=null and it doesn't get the print. Do you have any idea about this one?
Actually it looks like this :
GameObject TCoeurPlein = Instantiate (CoeurPlein, new Vector3 (0,0, 0), Quaternion.identity) as GameObject;
GameObject overlayParent = GameObject.Find ("Overlay");
if (overlayParent != null) {
TCoeurPlein.transform.SetParent(overlayParent.transform);
}
