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Question by maggot · Mar 15, 2012 at 09:08 PM · c#gameobjecthierarchygetgameobject.find

Using GameObject.Find with hierarchies in cSharp

Using Unity 3.5.0b6 I have a game character GameObject called Player001Character, it has a child GameObject called TrackPlayer. If I use this code :

GameObject getTrackPlayer = GameObject.Find("/Player001Character/TrackPlayer");

It runs, but never finds TrackPlayer. For example, if I use this code :

 getTrackPlayer.name = "New name";

I get an error message

NullReferenceException

How do I get the GameObject TrackPlayer if it is within a hierarchy (in the Hierarchy pane) ?

I've been to pages like this, which look like I'm doing it right : http://unity3d.com/support/documentation/ScriptReference/GameObject.Find.html?from=index

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Answer by GameFreak · Mar 15, 2012 at 09:30 PM

Do This.

Add a tag to TackPlayer

http://unity3d.com/support/documentation/Components/Tags.html. Here is how to do that though I am sure you know.

Then use

GameObject getPlayerTrack= GameObject.FindWithTag("TrackPlayer");

Hope it helps

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avatar image maggot · Mar 15, 2012 at 10:05 PM 0
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Thanks, I was trying to do it through a script which I found out wasn't picking up child gameobject ! Reading around, it seems I may have to add a tag anyhow to identify child - Tag all your children lol

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Answer by Jessy · Mar 15, 2012 at 09:24 PM

It works fine.

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Answer by DaveA · Mar 15, 2012 at 09:25 PM

This may be a dumb question, but you are sure that Player001Character is in the root of the scene, yes?

I would get into the debugger and make sure that GameObject.Find("/Player001Character") returns what you want, that it's transform has children, and that one of them is called "TrackPlayer", see what clues you get doing that.

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avatar image maggot · Mar 15, 2012 at 09:51 PM 0
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yes, it all works until I save all gameobjects, then load the scene. I think it has to do with the code which looks at the TrackPlayer being executed before TrackPlayer is added to the scene.

I got it working, I added a yield command in my load script to ensure that all objects were loaded

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