DontDestroyOnLoad() only works for root GameObjects or components on root GameObjects.

Unity Engine
1

Hey, so i know DontDestroyOnLoad() can’t be used on child objects, but that’s the only way i thought my problem could be solved, maybe someone here has a better idea:

I have a timer, that i want to keep across the levels. So when changing Scenes with Scenemanager the Timer gets reset and i can’t use DontDestroyOnLoad() because my Timer is a child of a canvas (it has to be child of canvas, right?).

2

If your timer is a UI component it would need to be in a canvas to render, yes.
There’s nothing stopping you from calling DontDestroyOnLoad on the canvas though, which is what I would do if I needed some UI to persist through scene switches.

1 Like
3

I tried DontDestroyOnLoad(transform.parent) or with transform.root but that doesn’t work aswell :confused:

4

The information you provide is very sparse, what is not working?
If the thread title is some error message you receive when trying to call DontDestroyOnLoad, I would assume you’re calling it on some object with a parent.
If you still get that error with transform.root I’m not sure what’s going on.

5

In the png you can see my hierachy structure. The script is attached to the “Timer”. In Awake() i’m just doing DontDestroyOnLoad(transform.root) or whatever else i already tried.
The problem is still, that the timer resets whenever changing scenes

5564239--573703--Capture.PNG

6

Some ideas I would suggest looking into:

  • Making a separate script and gameobject for the timer value with DontDestroyOnLoad. Assuming you have script on timer under the canvas for value. This way you can have a new canvas and timer text on every scene displaying the value from different Timer gameobject which doesn’t get destroyed when the new scene gets loaded.
  • Attaching the DontDestroyOnLoad script component to Canvas.
  • Creating a separate canvas for only the timer if you have other UI elements under it which you want to be removed when the new scene gets loaded.