Tons of [RegisterGenericComponentType] error on preview 33

Entity Component System (ECS)
1

I just upgraded and got these errors from Unity’s built-in types throwing repeatedly. Anyone with the same issue?

4579456--426259--Screenshot 2019-05-26 00.13.03.png
4579456--426259--Screenshot 2019-05-26 00.13.03.png1902×692 148 KB

The RequestSceneLoaded one for example :

ArgumentException: Unknown Type:`Unity.Entities.RequestSceneLoaded` All ComponentType must be known at compile time. For generic components, each concrete type must be registered with [RegisterGenericComponentType].
Unity.Entities.TypeManager.GetTypeIndex (System.Type type) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/Types/TypeManager.cs:825)
Unity.Entities.TypeManager.GetTypeIndex[T] () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/Types/TypeManager.cs:812)
Unity.Entities.ComponentType.ReadWrite[T] () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/Types/ComponentType.cs:44)
Unity.Scenes.SubSceneStreamingSystem.OnCreate () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Scenes.Hybrid/SubSceneStreamingSystem.cs:68)
Unity.Entities.ComponentSystemBase.CreateInstance (Unity.Entities.World world) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/ComponentSystem.cs:201)
Unity.Entities.World.AddSystem[T] (T system) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/World.cs:341)
Unity.Entities.World.CreateSystemInternal (System.Type type, System.Object[] constructorArguments) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/World.cs:235)
Unity.Entities.World.GetOrCreateSystemInternal (System.Type type) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/World.cs:251)
Unity.Entities.World.GetOrCreateSystem (System.Type type) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/World.cs:279)
Unity.Entities.DefaultWorldInitialization.GetOrCreateManagerAndLogException (Unity.Entities.World world, System.Type type) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/Injection/DefaultWorldInitialization.cs:38)
UnityEngine.Debug:LogException(Exception)
Unity.Debug:LogException(Exception) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/Stubs/Unity/Debug.cs:25)
Unity.Entities.DefaultWorldInitialization:GetOrCreateManagerAndLogException(World, Type) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/Injection/DefaultWorldInitialization.cs:42)
Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/Injection/DefaultWorldInitialization.cs:115)
Unity.Entities.DefaultWorldInitialization:smile:efaultLazyEditModeInitialize() (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/Injection/DefaultWorldInitialization.cs:150)
Unity.Entities.GameObjectEntity:Initialize() (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/Components/GameObjectEntity.cs:154)
Unity.Entities.GameObjectEntity:OnEnable() (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/Components/GameObjectEntity.cs:164)

The one with root cause not at GameObjectEntity exist as well

ArgumentException: Unknown Type:`Unity.Scenes.SubScene` All ComponentType must be known at compile time. For generic components, each concrete type must be registered with [RegisterGenericComponentType].
Unity.Entities.TypeManager.GetTypeIndex (System.Type type) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/Types/TypeManager.cs:825)
Unity.Entities.TypeManager.GetTypeIndex[T] () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/Types/TypeManager.cs:812)
Unity.Entities.EntityQueryBuilder.ForEach[T0] (Unity.Entities.EntityQueryBuilder+F_C`1[T0] action) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/EntityQueryBuilder_ForEach.gen.cs:175)
Unity.Scenes.Editor.SubSceneLiveLinkSystem.OnUpdate () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Scenes.Editor/SubSceneLiveLinkSystem.cs:83)
Unity.Entities.ComponentSystem.InternalUpdate () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/ComponentSystem.cs:818)
Unity.Entities.ComponentSystemBase.Update () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/ComponentSystem.cs:287)
Unity.Entities.ComponentSystemGroup.OnUpdate () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/ComponentSystemGroup.cs:451)
UnityEngine.Debug:LogException(Exception)
Unity.Debug:LogException(Exception) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/Stubs/Unity/Debug.cs:25)
Unity.Entities.ComponentSystemGroup:OnUpdate() (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/ComponentSystemGroup.cs:455)
Unity.Entities.ComponentSystem:InternalUpdate() (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/ComponentSystem.cs:818)
Unity.Entities.ComponentSystemBase:Update() (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/ComponentSystem.cs:287)
Unity.Entities.DummyDelegateWrapper:TriggerUpdate() (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/ScriptBehaviourUpdateOrder.cs:135)
2

Yes, I get the last one Unity.Scenes.SubScene spewing non stop.
Also get non stop NullReferenceExceptions if the Entity Debugger window is open.

3

I’m not getting these in my project (or empty project with p33). Did you guys try reimport+clear package cache+delete script assemblies?

Only thing I noticed was tests take considerably more time to run in p33. ECS Tests take much longer to run in p33 than p32

4

Thanks Creepgin, that solved some of my errors.

The Unknown Type error though was because I had IEquatable on a component without also having GetHashCode(). Luckily I remembered this post from aeldron mentioning it not long ago. I only had a single IEquatable component for test purposes so just got rid of it and that removed the spam errors.

1 Like
5

That seems like you need to clean you package folder like mentioned before.
I did get that error but I’m using IComponentData with generics. And for that I had to create a .cs file with the concrete type declaration.
For a component like this:

public struct MyGenericComponent<T> : IComponentData where T : struct {
  public T Value;
}

And if I use MyGenericComponent and MyGenericComponent somewhere in my code, then I declare them in my AssemblyInfo.cs file:

[assembly: RegisterGenericComponentType(typeof(MyGenericComponent<int>))]
[assembly: RegisterGenericComponentType(typeof(MyGenericComponent<float>))]
2 Likes
How is RegisterGenericComponentType attribute used?
6

Is there anything magic about the AssemblyInfo.cs file, or can you put your assembly attribute basically in any file?

I am trying to solve the same problem, but it won’t work. DOes the AssemblyInfo.cs file need to be registered somewhere or reside in a special location?

7

AssemblyInfo.cs can go anywhere.

8

Testing with Entities 0.1.1, Unity 2019.3.0b6, you can declare [RegisterGenericComponentType] in any .cs file - e.g. the same script as your system or component, if you want.

using Unity.Entities;

[assembly: RegisterGenericComponentType(typeof(GenericComponent<int>))]
[assembly: RegisterGenericComponentType(typeof(GenericComponent<float>))]


public struct GenericComponent<T> : IComponentData {
    public int Value;
}
6 Likes
9

Just for the record, this error also happens when a struct is not explicitly public, and a job attempts to capture it. Even though the compiler can access it, Burst isn’t able to find it.

10

reimporting all solved these issues for me