Add an event listener when GameObject becomes a child of another

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I'd like to have a listener on my gameobject for when it becomes a child of another gameobject, so I can perform functions based on what it's added to.

Any good of way of doing it, or is this a silly thing to do anyway?

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Answer by nasir_41 · Feb 07, 2017 at 01:33 PM

 bool isEvenFired=false;
 public delegate void IsChild(bool status);
 public event IsChild ChildEvent;
 
 void Update(){
 if(!isEventFired){
 isEventFired=true;
 if(ChildEvent!=null){
 ChildEvent(transform.parent!=null);
 }
 }
 }

And in other scripts you just need to assign a method to this delegate and event will be fired.. Hope this will give you a quick idea about it.

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Gentatsu · Feb 07, 2017 at 02:38 PM 0

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Is there a way to do it without it being in an Update function? That's one of the things I was trying to avoid! Thanks!

nasir_41 · Feb 08, 2017 at 05:08 AM 0

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Yes use this $$anonymous$$ethod void OnTransformParentChanged(){ }

See the docs https://docs.unity3d.com/ScriptReference/$$anonymous$$onoBehaviour.OnTransformParentChanged.html

Add an event listener when GameObject becomes a child of another

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