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AsyncOperation in pure ECS?

Discussion in 'Data Oriented Technology Stack' started by kfconeone, Jun 16, 2019.

  1. kfconeone

    kfconeone

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    Oct 3, 2013
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    I want to migrate my project to pure ECS, but the first problem I faced is AsyncOperation,like gameobject instantiating,assetsbundle loading,web request...

    Some new features like Addressables also need AsyncOperation to implement,does that mean I can’t use it in pure ECS?

    For now I use hybrid ECS to achieve my requirements,but in Project Tiny I can’t ignore this,is there any way to use AsyncOperation?

    And I don’t mean some substitute API, just good old AsyncOperation.
     
    Last edited: Jun 16, 2019
  2. tertle

    tertle

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    What's stopping you using async operations in a (component) system?
     
  3. kfconeone

    kfconeone

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    For example,we have tons of package using StartCoroutine to load assets, and we also use StartCoroutine for our WebRequest, but these are all bound with Monobehaviour.

    I don`t know how could I do the tricks without Monobehaviour...
     
  4. tertle

    tertle

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    I ditched coroutines years before ECS was announced. It's hardly a requirement for asset loading.

    At least Addressables/AsyncOperation you can just to check IsDone in a ComponentSystem. It's really all the yield is doing under the hood or use the completed event like it's designed for.
     
    Last edited: Jun 17, 2019
  5. Trinary

    Trinary

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  6. Spy-Shifty

    Spy-Shifty

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    May 5, 2011
    Posts:
    545
    Just do:
    Code (CSharp):
    1. protected async void OnCreate() {
    2.      var handle = Addressables.Load<MyAsset>("default");
    3.      await handle.Task;
    4.      myAsset = handle.Result;
    5. }
     
  7. kfconeone

    kfconeone

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    yeah... I tried to use OnUpload() checking IsDone before, but it's a little bit laborious and not very flexible,so I abandoned that way at last.

    But I think I better take a review, thanks!

    Thanks! I'll take a good look at this.
     
    Last edited: Jun 17, 2019
  8. MNNoxMortem

    MNNoxMortem

    Joined:
    Sep 11, 2016
    Posts:
    685
    Picking this up and running into this, on the MonoBeha
    • You cannot use ref locales within async methods, which is a problem when you need ref locales to capture ref returns from Dots code (e.g. Collider)
     
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