GetComponentGroup from another ECS World ???

I am trying to sync data between 2 World.
1 world is Pure ECS net, another is Hybrid ECS (default one) have component to track Entity from Pure ECS world.
The idea is have to Hybrid get data from Pure to update itself and put new data back to ECS world

From this post, I try
- Get EntityManager from each world then use SetComponentData(Entity) one by one work but it degrade as the list get bigger.
- Share NativeArray between 2 world also work but still have lots of trouble logic to figure out.

So I figure the best way to approach this is to have system get ComponentGroup directly from another system in different World.
I set ComponentGroup to public and access from another system in diffrent World

Spoiler

It kinda work. But I now feel little worry if I do something not suppose to happen.

Did ComponentGroup was designed this way? It allow us to access it globally as long it have the correct world?

 

I could be wrong, but I think at least the original intention of worlds was complete separation of data. They aren't really meant to communicate between each other. For example, a multiplayer server where each player is a separate world.

There has been talk of other possible World usages more though. For example, in one talk a developer suggested that if worlds weren't locked to the update you could do async procedural generation in a secondary world before copying into the primary world.

As it stands at the moment though, I'd recommend against using multiple worlds where they aren't required (again for example, a multiplayer server). The support just seems very limited at the moment.

 

Well I was used this with SpatialOS unity gdk. I guess the support isn't here.
Kinda sad though.

 

That is not correct. From the doc:
Multiple Worlds
Every World has its own EntityManager and thus a separate set of JobHandle dependency management. A hard sync point in one world will not affect the other World. As a result, for streaming and procedural generation scenarios, it is useful to create entities in one World and then move them to another World in one transaction at the beginning of the frame.

 

You do realize my comment was posted 10 months ago right and you're bumping an old thread; before conversion worlds were a thing. Entities changes a lot and fast.