New version of Entities 1.0 pre-release now available - February 2023

Unity Engine
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1

Hello everyone! We’ve just published a new version of Entities and other ECS-based packages compatible with Unity 2022.2 Tech Stream.

Getting started
If you are just getting started, refer to our installation and setup guide in our documentation to help with project setup. We recommend using these packages with Unity 2022.2.6f1 and above. You can find the changelog for the latest editor version here.

We also have the following samples and documentation available for you to get started quickly:

  • Megacity: A sample showcasing how you can stream thousands of entities into the game scene at a stable 60 FPS, with thousands of active physics colliders and dynamic vehicles actively performing collision avoidance.

  • Rival Character Controller: For users looking to quickly jump into building their game, the Rival Character Controller is available and compatible with the pre-release of ECS for Unity, including documentation and implementation samples.

  • DOTS Guide, ECS Samples, and Learn Content: Resources that are especially useful for new users to learn about fundamental concepts of data-oriented design.

  • ECS Network Racing: A multiplayer racing sample showcasing the capabilities of Netcode for Entities and how you can easily build a multiplayer game out of the box. This sample exemplifies an implementation of client/server architecture with client-side prediction, interpolation, and lag compensation.

Notable Highlights
Here are some of the notable highlights from this release. For a full list of changes in each package, refer to the changelogs in our documentation (linked below):

  • Editor

  • Fixed null reference errors when loading user scripting objects from ContentFiles

  • Entities

  • Implement ISystem methods (OnCreate/OnUpdate/OnDestroy) are now default interface methods. These no longer need to be defined in the struct implementing the ISystem interface if they are not used.

  • ISystem now doesn’t need BurstCompile on the struct. Thus bursting a system simply means to put BurstCompile on either OnCreate, OnStartRunning, OnUpdate, OnStopRunning, or OnDestroy.

  • Entities Graphics

  • EntitiesGraphicsSystem.GetMesh and EntitiesGraphicsSystem.GetMaterial methods are now public.

  • Included various light baking bug fixes

  • Unity Physics

  • Help icons now point to the latest version of documentation for physics authoring components.

  • Added functions that allow you to set impulse event threshold on all constraint joints, or only one of them.

  • Replaced PhysicsTransformAspect with TransformAspect.

  • UnityPhysicsStep component does not show Havok physics engine in the dropdown field when com.havok.physics package is not installed.

  • During baking from GameObject physics joints to Unity Physics joints the joint’s spring coefficient is correctly considered.

  • The component in PhysicsShapeAuthoring’s Reset() function is now immediately reset to avoid sequential coupling issues

  • Havok Physics for Unity

  • Fixed various stability issues with rotational motors.

  • Fixed an issue where Havok Physics for Unity would stall in some scenarios.

  • Netcode for Entities

  • Added HelpURL linking various Netcode for Entities components to relevant documentation.

  • EnablePacketLogging component is now public to allow for per-connection debug information.

  • GhostUpdateSystem now supports Change Filtering, so components on the client will now only be marked as changed when they actually are changed. We strongly recommend implementing change filtering when reading components containing [GhostField]s and [GhostEnabledBit]s on the client.

  • Exposed NetworkTick value to Entity Inspector

  • Fixes and improvements to the GhostAuthoringInspectionComponent Inspector.

Sharing feedback
This forum is the best place to open discussions and ask questions.

  • If you encounter a bug, please use the Unity Bug Reporter in the Unity Editor, accessible via Help > Report a Bug. Include the name of the package (with version number) in the title to help our team triage things appropriately.
  • To learn more about what we are working on, you can refer to this post and our public roadmap where you can share feedback and submit ideas.

Thank you again to everyone who has continued to take the time to share feedback. We look forward to hearing from you!

24 Likes
Package not available in package manager
Havok: StepJob
2

Absolutely fantastic changes, especially on the core Entities package. The quality of life changes such as no longer requiring OnCreate/OnDestroy methods have really made my day.

And caught by Tertle on the discord: Unity.Animation → Unity.Motion. Hrmmmmm???

1 Like
3

The dots 1.0.0-pre44 packages keeps throwing the following error. Removing the Entities Graphics package causes the error to go away. Experienced on Unity Editor 2022.2.7f1.

BatchRendererGroup requires the use of a ScriptableRenderPipeline.
UnityEngine.Rendering.BatchRendererGroup:.ctor (UnityEngine.Rendering.BatchRendererGroup/OnPerformCulling,intptr)
Unity.Rendering.EntitiesGraphicsSystem:OnCreate () (at ./Library/PackageCache/com.unity.entities.graphics@1.0.0-pre.44/Unity.Entities.Graphics/EntitiesGraphicsSystem.cs:860)
Unity.Entities.ComponentSystemBase:CreateInstance (Unity.Entities.World) (at ./Library/PackageCache/com.unity.entities@1.0.0-pre.44/Unity.Entities/ComponentSystemBase.cs:210)
Unity.Entities.World:AddSystem_OnCreate_Internal (Unity.Entities.ComponentSystemBase) (at ./Library/PackageCache/com.unity.entities@1.0.0-pre.44/Unity.Entities/World.cs:462)
Unity.Entities.World:GetOrCreateSystemsAndLogException (System.Collections.Generic.IEnumerable1<System.Type>,int,Unity.Collections.AllocatorManager/AllocatorHandle) (at ./Library/PackageCache/com.unity.entities@1.0.0-pre.44/Unity.Entities/World.cs:1150) Unity.Entities.World:GetOrCreateSystemsAndLogException (System.Type[ ],Unity.Collections.AllocatorManager/AllocatorHandle) (at ./Library/PackageCache/com.unity.entities@1.0.0-pre.44/Unity.Entities/World.cs:1182) Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal<Unity.Entities.DefaultWorldInitialization/DefaultRootGroups> (Unity.Entities.World,System.Collections.Generic.IEnumerable1<System.Type>,Unity.Entities.ComponentSystemGroup,Unity.Entities.DefaultWorldInitialization/DefaultRootGroups) (at ./Library/PackageCache/com.unity.entities@1.0.0-pre.44/Unity.Entities/DefaultWorldInitialization.cs:235)
Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal (Unity.Entities.World,System.Collections.Generic.IEnumerable`1<System.Type>) (at ./Library/PackageCache/com.unity.entities@1.0.0-pre.44/Unity.Entities/DefaultWorldInitialization.cs:274)
Unity.Entities.DefaultWorldInitialization:Initialize (string,bool) (at ./Library/PackageCache/com.unity.entities@1.0.0-pre.44/Unity.Entities/DefaultWorldInitialization.cs:154)
Unity.Entities.DefaultWorldInitialization:smile:efaultLazyEditModeInitialize () (at ./Library/PackageCache/com.unity.entities@1.0.0-pre.44/Unity.Entities/DefaultWorldInitialization.cs:341)
Unity.Scenes.SubScene:OnEnable () (at ./Library/PackageCache/com.unity.entities@1.0.0-pre.44/Unity.Scenes/SubScene.cs:318)
UnityEditor.EditorApplication:Internal_RestoreLastOpenedScenes ()

4

Do you have either URP or HDRP installed? If not, you should. ECS isn’t compatible with the built-in render pipeline.

5

When will the samples be updated to this new version?

1 Like
6

Will ECS be compatible with VR? LAst time i tried it i went to a lto of trouble with hybrid renderer and was in the end unable to make it work

7

Since upgrading from pre.15 I keep getting an error that my aspects don’t implement interface member IAspectCreate.AddComponentRequirements. Its the same thing if I create a brand new 3D URP project in 2022.2.7f1 and add com.unity.graphics. As soon as I create an aspect I get this error.

8

How do you do your namespaces? there was a regression here I’ve already brought to Unity’s attention

Fails

namespace BovineLabs.Core
{
    using Unity.Entities;

    public readonly partial struct TestAspect : IAspect
    {
        public readonly RefRO<BLDebug> Test;
    }
}

Works

using Unity.Entities;

namespace BovineLabs.Core
{
    public readonly partial struct TestAspect : IAspect
    {
        public readonly RefRO<BLDebug> Test;
    }
}
2 Likes
9

i had some error about inputsystem inputaction “already register by typemanager”, i tried everything (including remove all entity packages + inputsystem packages) but i had to make a new project and reimport all my scripts to fixe it.

Plus i have a strange bug where every time i place a script on my gameobject it’s added twice, not a serious issue but weird… someone has this issue too?

10

This issue?
https://forum.unity.com/threads/entities-1-0-0-pre-44-componentsystemgroup-sorting-is-completely-broken.1401106/#post-8813329

I have a fix here (as shown in above post.)
https://forum.unity.com/threads/entities-1-0-0-pre-44-componentsystemgroup-sorting-is-completely-broken.1401106/#post-8814862

Requires tiny package modification though and if you don’t want to do that I think Unity will be releasing a minor update with some fixes soon~

11

exactly, for this one i recreate a new project and reimport all my script and i dont have those error anmyore

12

I can’t give any timelines, but we’re working to update the ECS Samples repo to the latest version, will share back when there’s more details!

1 Like
13

8820922--1200715--upload_2023-2-20_17-31-29.png
8820922--1200715--upload_2023-2-20_17-31-29.png1232×338 3.71 KB

The best thing is: No more warnings, no more errors. (so far) Neither at build time, nor at run time.
Much, much needed cleanup of a release, I’m very happy with it so far!

4 Likes
14

I have URP installed. I have since found out that for me this error occurs in 2022.2.6f1 and 2022.2.7f1. If I create a project in 2022.2.5f1 with DOTS 1.0.0.pre-44 then no such error occurs.

15

Note about the megacity sample, if you download it via the zip it’ll be missing many assets, use git clone instead

1 Like
16

Dots Best Practices just updated, awesome

2 Likes
17

I had this exact issue in a project that was already set up to use URP. Doing a Reimport All fixed it.

18

Yes, ECS for Unity is supported on VR platforms as well. We’re still working on doing more robust testing, but if you encounter any difficulties, please raise a bug so we can triage and fix them accordingly. Thank you!

1 Like
19

Hi, awesome work! Is there any possibility that DOTS will support 2D workflow in the future? Or was that all canceled with Project Tiny?

2 Likes
20

They would likely not give out any concrete answer for this. This is from Dev Blitz 2022:
8825014--1201399--upload_2023-2-22_10-4-53.png

3 Likes