Updating World at a different rate

[Xerioz]

Haven’t found any ways to do. Most solutions involve updating manually each system, but why can’t the world simply update them all in one go?

My use case is simple: I have a simulation loop running at a fixed interval.

I’m currently going around this problem by doing this before every OnUpdate():

            time += Time.deltaTime;
            if (time < DefaultUpdate.TIME_INTERVAL) return;
            time = 0f;

Any other way to do this?

[Enrico-Monese]

You could create a different world and manage that yourself how you want it. Or disable the automatic bootstrap of the default world and make that work how you want it.
The default script is a “one fits all” solution, you can get the script from the entities package folder I think and modify that probably. Something along those lines I think

[Xerioz]

@Enrico-Monese

You could create a different world and manage that yourself how you want it

That’s exactly my issue. How do I create a separate World and update it manually, while still maintaining the magical update order (e.g. UpdateAfter/Before )?

[Enrico-Monese]

I think I saw a thread some time ago about this, can’t find it right now though.
Maybe take a look at these, could be helpful possibly

How to create custom world with specific ComponentSystems

In the documentation: https://github.com/Unity-Technologies/EntityComponentSystemSamples/blob/master/Documentation/content/ecs_in_detail.md It is said that [quote] World A World owns both an EntityManager and a set of ComponentSystems. You can create as many Worlds as you like. Commonly you would create a simulation World and rendering or presentation World. By default we create a single World when entering Play Mode and populate it with all available ComponentSystems in the project, but yo…

Worlds and Frame Rates or Slow and fast ECS?

So ECS has worlds that all live within your Unity App and therefore should obey the frame rate settings of your App e.g. Application.TargetFrameRate = 30; * However in Unity there are at least two 'frame rates' the rendering and the physics update cycles. So do worlds have their own frame rate or are they set by the rendering or physics cycles? In the future when physics is included in ECS will there be two types of worlds? What if you want to run a world faster or slower e.g. run a simu…

[Xerioz]

Yeah, well, ScriptBehaviourUpdateOrder.UpdatePlayerLoop is the only way to make them tick while doing its update order magic, but that hooks up to one of the update loops ( update, fixed update ).

Wish there was more info on this subject

Do we really have to wait for their FPS networking demo to see how they implemented independent world updates?

[zyc_dc]

I got the same issue. Really want to update a world manually and keep the update order.