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Trouble getting started with NetCode

Discussion in 'Multiplayer' started by chatrat12, May 29, 2020.

  1. chatrat12

    chatrat12

    Joined:
    Jan 21, 2015
    Posts:
    122
    Trying to follow this guide: Getting started with NetCode

    I'm on Unity 2019.3.15f1

    I'm getting these errors:
    upload_2020-5-29_15-17-13.png
    Looks like the entire Networking namespace is missing and an issue with a call to NativeHashMap.Length not being a thing.

    The guide says to install the packages: Entities, Hybrid Renderer, Unity NetCode, and Unity Transport. All packages are up to date.

    Anyone now what the issue is?
     

    Attached Files:

    chatrat12, May 29, 2020
    #1

  2. chatrat12

    chatrat12

    Joined:
    Jan 21, 2015
    Posts:
    122
    I believe the root cause is the first 3 errors about the NativeHashMap. That error making the Transport fail to compile and NetCode depends on the transport.
     
    chatrat12, May 29, 2020
    #2

  3. chatrat12

    chatrat12

    Joined:
    Jan 21, 2015
    Posts:
    122
    Did more digging. Turns out 
    NativeHashMap
    is part of a package named 
    collections
    . From the collections change log on the latest update that happened on the 25th:

    Removed
    • Removed expired APIs for UnsafeHashMap.Length
    • Removed expired APIs for NativeHashMap.Length
    Entities and Jobs depend on the latest Collections. Going to try and roll back all 3 to see if it fixes my issues
     
    chatrat12, May 29, 2020
    #3

  4. chatrat12

    chatrat12

    Joined:
    Jan 21, 2015
    Posts:
    122
    Just getting more errors :\
     
    chatrat12, May 29, 2020
    #4

  5. chatrat12

    chatrat12

    Joined:
    Jan 21, 2015
    Posts:
    122
    Manually fixed the Transport package to get it to work. More info here
     
    chatrat12, May 29, 2020
    #5

  6. chatrat12

    chatrat12

    Joined:
    Jan 21, 2015
    Posts:
    122
    Now NetCode is calling `ArchetypeChunk.GetComponentVersion` instead of `ArchetypeChunk.GetChangeVersion`. After fixing that I get the following error:


    InvalidOperationException: Group of type Unity.NetCode.ClientSimulationSystemGroup has not been created, either the derived class forgot to call base.OnCreate(), or it has been destroyed
    Unity.Entities.ComponentSystemGroup.CheckCreated () (at Library/PackageCache/com.unity.entities@0.11.0-preview.7/Unity.Entities/ComponentSystemGroup.cs:67)
    Unity.Entities.ComponentSystemGroup.AddSystemToUpdateList (Unity.Entities.ComponentSystemBase sys) (at Library/PackageCache/com.unity.entities@0.11.0-preview.7/Unity.Entities/ComponentSystemGroup.cs:72)
    Unity.NetCode.ClientServerBootstrap.CreateClientWorld (Unity.Entities.World defaultWorld, System.String name) (at Library/PackageCache/com.unity.netcode@0.1.0-preview.6/Runtime/ClientServerWorld/ClientServerBootstrap.cs:86)
    Unity.NetCode.ClientServerBootstrap.Initialize (System.String defaultWorldName) (at Library/PackageCache/com.unity.netcode@0.1.0-preview.6/Runtime/ClientServerWorld/ClientServerBootstrap.cs:51)
    Unity.Entities.DefaultWorldInitialization.Initialize (System.String defaultWorldName, System.Boolean editorWorld) (at Library/PackageCache/com.unity.entities@0.11.0-preview.7/Unity.Entities.Hybrid/Injection/DefaultWorldInitialization.cs:97)
    Unity.Entities.AutomaticWorldBootstrap.Initialize () (at Library/PackageCache/com.unity.entities@0.11.0-preview.7/Unity.Entities.Hybrid/Injection/AutomaticWorldBootstrap.cs:15)
     
    chatrat12, May 29, 2020
    #6