Provide a Way to Re-Initialize Debug Lines?

[zicklag]

I have a use-case where I want to reset my whole world. I do this by deleting all entities other than the Camera. The issue is that it also deletes the debug lines meshes.

I could filter out the debug lines meshes from my query for all entities to delete, but DebugLinesMesh is the only defining component, and it's not public.

Alternatively I could delete all entities and have a way to re-initialize debug lines, but the setup system is private, too.

[Toqozz]

Hmm. This sounds logical and I'm happy to open up DebugLinesMesh, but how do you handle re-initializing the other bevy plugins like UiPlugin? Or maybe none of the other plugins spawn game objects?

[zicklag]

So far I haven't seen any other plugins that spawn game objects.

I wonder if you could somehow stick those debug line meshes inside the render world, without sticking them in the game world?

I haven't looked deep enough into it to know, but I know there's like a separate Bevy world used by the render sub-app. I wonder if that could be utilized somehow.

[Toqozz]

I've made DebugLinesMesh public in 0.8.1.

I think the real solution is supposed to be something with using different worlds, but I'm not really sure and it doesn't seem trivial. You can use RenderWorld, but it's cleared every frame and "only available during the extract stage" so doesn't seem like a good place for our mesh to live.

[zicklag]

Sweet, thanks. 👍

[zicklag]

Since I'm just curious about it, I might take a quick look at separate worlds if I get the chance.