Why isn't 'LevelSubsystem' on the Unreal Engine?

Development Programming & Scripting
1

I need a subsystem that requires life cycle to be managed by level.
None of the subsystems provided by Unreal seem to be suitable for use currently.
Is there a way that can replace the above functionality?

2

hmm. Do you mean per the main level loaded? GameInstance should exist for just about the same lifetime as the main level . . .

Otherwise, there is the possibility (quite likely in most setups, I would think) that several levels could be loaded at once, and subsystems are more of a singleton thing that exist as long as the thing it depends on exists… so having a subsystem instance for each level loaded doesn’t really connect with that concept.

Can you give an example of what you might use this to do?

3

I didn’t know that the GameInstance created by per level.
Maybe I can try GameInstanceSubsystem. Thank you :grinning:

4

GameInstance should be pretty close to living the same time as the main level.

5

GameInstance lifetime is while the game is running. For “level” lifetime use UWorldSubsystem.

https://docs.unrealengine.com/4.27/en-US/API/Runtime/Engine/Subsystems/UWorldSubsystem/

6

Thanks I think It looks more close for me.

7

oof, does it not unload the GameInstance between levels these days by default? My bad, sorry if I gave bad information