Read Singleton across scenes?

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I'm new to using singletons and I head using one for my inventory was a correct use for one since you only want one. I currently have three scenes outside, in one building, and a scene where I test new features/items. I currently have the inventory script on a game manager that's in all three scenes because the UI needs it but unity (Rightfully) doesn't like that I have this singleton in multiple scenes. Is there a way I can access that singleton in all my scenes.

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Best Answer

Answer by The-Peaceful · May 05, 2021 at 10:27 AM

You can use Unity's 'DontDestroyOnLoad' method like this:

 private void Awake()
         {
             if ( Instance != null && Instance != this )
             {
                 Destroy(gameObject);
                 return;
             }
 
             Instance = this;
             DontDestroyOnLoad(gameObject);
         }

Pretty much the same old Singelton implementation, with the tiny change that this gameObject won't be destroyed if a new scene is loaded. :D

https://docs.unity3d.com/ScriptReference/Object.DontDestroyOnLoad.html

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Read Singleton across scenes?

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