How to discard all changes to public variables when the game ends?

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1

I have a script that defines a set of public variables, some of them contain GameObjects that represent Prefabs, some of these Prefabs have attached scripts that define public variables of their own. The problem I have is that when some script modifies a public variable, the Prefab to which it belongs is updated permanently, that is, the original values are never restored when the game ends, so when I run the game for a second time I get a unwanted behaviors. It becomes worst when a script modifies a SpriteRenderer, because when this happens, the Prefab is updated with a Sprite that exists only in memory, which causes it to become broken in such a way that it is impossible to make the game run for a second time without having to manually restore the Prefab to its original state.

Is there a way I can modify public variables exclusively in memory, so when the game ends all changes are lost?

2

Create an instance of the prefab. Modify it as required. Disable it so it does not function.

Then instantiate from your disabled instance.

No changes to prefab are made or required.