Dont Destroy On Load - Exception

Questions & Answers
1

what i want to do is a bit hard to explain so i will try to be the maximum comprensible as i can.

i have 2 scenes.

and i have my menu manager that doesnt destroy on load with the command line: DontDestroyOnLoad();

and he pass from the scene 1 to scene 2

but when i pass from the scene 2 to scene 1 it duplicates, i just want to stay with the first menu manager.

there is a way to destroy the default menu manager from scene 1 when i pass from the scene 2 to scene 1 ?

2

You’re looking for some variety of singleton pattern:

Process is fairly simple, but important to get right:

  • You must keep track of a single, static “instance” of the class.
  • Once loaded, your object must check if there is currently any instance registered.
  • If there is not an instance, your object should become the new instance.
  • If there is an instance, you should resolve that; usually, you’ll either destroy the new object, or destroy and replace the old one.

Code examples are fairly trivial if you understand enough programming to know what a static variable is. If not, time to look up some tutorials!

The links above should be helpful for additional explanation.

3

What you are after is the singleton pattern. Goes something like this

public class MenuManager : MonoBehaviour {

    public static MenuManager instance;

    void Awake (){
        if(!instance){
            instance = this;
        } else {
            Destroy(gameObject);
        }
    }
}