#archived-dots

1 messages · Page 54 of 1

true mirage
#

How can I know? burst compiler is enabled

#

All structs are BurstCompile

#

It is worth noting I complete that job immediately, so, it is single thread, yes?

rotund token
#

well your error message above is saying its' not

#

but you can check the profiler it will show you

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or just look at the burst debugger

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and find your job in that

rustic rain
#

also check if burst compilation is even on

true mirage
#

After removing MinBy which has used lambda, I did not get that error again.

#

OK, I check, appreciated

true mirage
rustic rain
#

is sample sixe big enouhg?

#

size

true mirage
#

Also, uncheck safety check does not affect

rustic rain
#

because running one takes overhead

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comparing in nano values wil

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will not make any sense

true mirage
#

In the peak

true mirage
rustic rain
#

most of time is spent outside of burst

true mirage
#

It was path finding as well

rustic rain
#

smth is wrong

true mirage
#

Thanks, I upload my code somewhere, if you had time, please , really appreciated.
and how can I find the bottleneck? add Profiler sampling and measure the duration of code blocks?

#

It is really slow 600ms for simple path

image.png
rustic rain
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also make pure method check

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with only method - complete

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on job handle

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to be sure it`s job problem

mild ledge
#

Re-asking my question
Hi, so I am looking at some bathc render group api code and there is a comment there // TODO: WAITING FOR THE JOB HERE! THIS IS SLOW! NEED THE MULTITHREADED FENCE VERSION! I know what a fence is but Im not understanding how to use one with the job system. Can someone please explain this?

rotund token
#

unfortunately i dont think many people here outside kornlaks use BRG directly
most people probably just rely on hybrid renderer at this stage

mild ledge
#

I think its more of a generic jobs thing rather than brg specific unless they mean graphics fence but I dont see how it applies to that piece of code

pliant plover
#

If you have any BatchRendererGroup related questions, I'm happy to help.

mild ledge
pliant plover
mild ledge
#

GreatUnityChanThumbsUp 🥳

solemn hollow
#

anybody tried AssetPostProcessors with ECS? as soon as i declare one Entities Codegen seems to break.

rustic rain
#

I didn't notice any mention how to choose render target for it in manual

pliant plover
#

BRG does not deal with any render targets, all of that is up to the active SRP. BRG basically allows you to insert your own draws into ScriptableRenderContext.DrawRenderers calls that the SRP does.

rustic rain
#

🤔

#

I'm not very familiar with SRP to know what it means 😅

pliant plover
#

Basically, it's not something that you use to implement completely custom render passes, it's a way to customize what gets rendered into existing render passes.

rustic rain
#

would it be possible to just render to specific texture on demand (per click for example)?

#

using BRG

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I need it for color/id draw call for detecting mouseclicks on meshes

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without physics

pliant plover
#

You should be able to implement such rendering, and it's possible to use BRG with it.

#

But BRG itself does not render anything, it's more like a callback for inserting draws when something else (e.g. the SRP) is rendering.

rustic rain
#

What should I research then?
I did follow manual's example. But after that it wasn't clear at all how to attach that BRG to anything

pliant plover
#

The BRG is automatically attached to all ScriptableRenderContext.DrawRenderers and ScriptableRenderContext.DrawShadows rendering, and it's not possible currently to attach it to anything else.

rustic rain
#

🤔

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so if I just create BRG, any SRP that exists will already render whatever it has?

pliant plover
#

Yes.

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Whenever the SRP does culling, your BRG callback will get called and that allows you to decide what to render. Whenever the SRP renders, the results of your callback will get taken into account.

rustic rain
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that is somewhat sadge, because I don't see then how I can make a separate renderer from entities.graphics

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allthough

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🤔

pliant plover
#

Entities.Graphics is implemented using BatchRendererGroup, so it should be possible to anything that it's doing.

rustic rain
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no I mean, what I want is separate draw call

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I don't want entities that are rendered by BRG

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of entities

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and I don't want normal camera to render things from my BRG

pliant plover
#

You get the camera ID as an input parameter in the BRG callback, maybe you could use that?

rustic rain
#

OnPerformCulling?

pliant plover
#

Yes, you get BatchCullingContext.viewID

rustic rain
#

huh

#

hmm, don't think that would help me though. I want to have separate draw calls on same camera anyway

pliant plover
#

If you can figure out a way to customize the SRP to render what you want, you should be able to use BRG with that rendering.

true mirage
#

Can I use static or even static readonly fields (containers or value types) in burst time?

# 
 [BurstCompile]
    public readonly struct Path
    {
        public static readonly Path Empty = new(new NativeArray<int3>(0, Allocator.Temp));
# 
 [BurstCompile]
    public struct RoadObstacleChecker : IObstacleChecker
    {
        private static readonly int3 Up = (int3)math.up();
# 

    [BurstCompile]
    public struct AStar
    {
        public const int MaxDistance = 100000000;
        private readonly NativeArray<int3>.ReadOnly _directions;

        public static readonly NativeArray<int3>.ReadOnly MainDirections = new NativeArray<int3>
        (
            new[] { (int3)math.right(), (int3)math.forward(), (int3)math.left(), (int3)math.back() },
            Allocator.Persistent
        ).AsReadOnly();

and where should I dispose them, the persistent one? in a script with OnApplicationQuit?

drowsy pagoda
#

I don’t think you need to worry if your application quits. Your app is a container itself, once that quits, everything is flushed whether you want to or not.

#

You only need to worry about memory leaks DURING runtime so you aren’t wasting memory space for other things.

true mirage
#

Sometimes, I get this error

0,0): Burst error BC1091: External and internal calls are not allowed inside static constructors: Unity.Collections.LowLevel.Unsafe.AtomicSafetyHandle.GetTempMemoryHandle_Injected(ref Unity.Collections.LowLevel.Unsafe.AtomicSafetyHandle ret)

While compiling job: System.Void Unity.Jobs.IJobExtensions/JobStruct`1<Bitzooma.MiniCity.Utility.PathFinding.PathFindingJob>::Execute(T&,System.IntPtr,System.IntPtr,Unity.Jobs.LowLevel.Unsafe.JobRanges&,System.Int32)
at <empty>:line 0
true mirage
zenith garden
#

Should I use jobs system for a method which is called only once, but I want it to work through several frames? Will there be significant performance drawbacks?

drowsy pagoda
#

Oh yeah you trying to worry about this because you are in editor and when you press stop.

true mirage
#

Sometimes, errors are vague and cannot find the line where bugs exist there excatly

viral sonnet
#

statics don't work in burst but SharedStatic is a thing

true mirage
#

None of them?

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So, why does it return the result correctly?

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and also, sometimes, I do not see any errors related to it

viral sonnet
#

burst culls unused code very aggressively

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maybe it works because you don't call it from extern?

true mirage
#

I use them in my routine always

#

MainDirections in AStar, Up in RoadObstacleChecker , etc.

rotund token
solemn hollow
#

it was some codegen issue with namespaces beeing named too similar i think. i have no idea why it only happened when a Postprocessor was active in that assembly

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the processor was completely empty. just declaring it caused it.

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i didnt spent much time on debugging this.

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i had something like

using Core
using UtilityAI.Core

and codegen then somehow used UtilityAI.Core.SomeComponentInCore instead of Core.SomeComponentInCore

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turns out postprocessors wasnt what i needed anyways. finally got the codegen working in a manner that doesnt destroy userworkflow

rotund token
#

Reminds me when someone uses .System namespace and everything breaks

solemn hollow
#

yah i have no idea about namespace conventions tbh.

viral sonnet
rotund token
#

I doubt it - at the very least it's extremely weird way of doing something

hybrid jay
#

surely public static readonly Path Empty = new(new NativeArray<int3>(0, Allocator.Temp)); doesnt make sense

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static readonly and Temp

rotund token
#

Static readonly is instantiated per burst instance

rustic rain
rustic rain
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I guess it will

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thus it's called Shared

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😅

rotund token
#

There's no reason for it to be a native array

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Just use a regular array

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For the directions

rustic rain
#

oh man, const value types. Why is that not a thing?

true mirage
#

By the way, I remove them 🙂

true mirage
true mirage
#

Now, it is OK.

  public static class PathFindingDirections
    {
        public static readonly NativeArray<int3>.ReadOnly MainDirections = new NativeArray<int3>
        (
            new[] { (int3)math.right(), (int3)math.forward(), (int3)math.left(), (int3)math.back() },
            Allocator.Persistent
        ).AsReadOnly();

        public static readonly NativeArray<int3>.ReadOnly AllDirections = new NativeArray<int3>
        (
            new[]
            {
                (int3)math.right(), (int3)math.forward(), (int3)math.left(), (int3)math.back(),
                new(1, 1, 0), new(-1, 1, 0), new(0, 1, 1), new(0, 1, -1),
                new(1, -1, 0), new(-1, -1, 0), new(0, -1, 1), new(0, -1, -1)
            },
            Allocator.Persistent
        ).AsReadOnly();
//...
rotund token
#

Static readonly int[] test = new[] {1,2,3};

true mirage
# 
 [BurstCompile]
    public struct AStar
    {
        public const int MaxDistance = 100_000_000;
        private readonly NativeArray<int3>.ReadOnly _directions;

        private readonly int _length, _width, _height;
        private readonly int _maxHeight;
        private readonly bool _debug;

        public AStar(int worldLength, int maxHeight, NativeArray<int3>.ReadOnly directions, bool debug = false)
        {
#

directions can be set outside with static readonly ..

rotund token
#

That isn't a job

true mirage
# 
new AStar(...,PathFindingDirections.MainDirections)
rotund token
#

Are you just using a function pointer?

rotund token
true mirage
#

I am confused. Some links say you cannot use static fields in burst

rotund token
#

You can't use statics

#

You can use static readonly with primitives

true mirage
# 
  [BurstCompile]
    public struct PathFindingJob : IJob, IDisposable
    {
        [ReadOnly] private readonly int3 _sourcePoint;
        [ReadOnly] private readonly int _maxDistance;
        [ReadOnly] private readonly bool _returnFirstValidPath;

        [ReadOnly] private AStar _aStar;
        [ReadOnly] private NativeArray<int3> _targetPointArray;
        [ReadOnly] private RoadTargetChecker _targetChecker;
        [ReadOnly] private RoadObstacleChecker _obstacleChecker;
        [ReadOnly] private RoadWeightCalculator _weightCalculator;

        [WriteOnly] public NativeList<int3> Points;
        [WriteOnly] public NativeList<PathStep> Steps;

        public PathFindingJob
        (
            AStar aStar,
            int3 sourcePoint,
            int maxDistance,
            int3[] targetPointArray,
            bool returnFirstValidPath,
            RoadTargetChecker targetChecker,
            RoadObstacleChecker obstacleChecker,
            RoadWeightCalculator weightCalculator
        )
        {
#

AStar structure is used in job PathFindingJob

true mirage
#

not primitive

rustic rain
#

literally as I open it, my CPU usage is 13% and GPU 30%

true mirage
#

Utility.PathFinding.PathStep[] is not supported` OK, I know it but why does it return the result?
Does it turn off burst?!

rustic rain
true mirage
#

Containers with allocator Temp should last in one frame, what about if they do not?

viral sonnet
#

burst will thrown an error on compiling. game will still work, just with unbursted code

rustic rain
true mirage
#

WTH

rustic rain
#

If I remember correctly

#

Temp allocator is thread specific

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it's also stack memory

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I think?

viral sonnet
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probably runs on main thread

true mirage
#

😅

rustic rain
#

main thread Temp memory is different?

viral sonnet
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it can't be scheduled.

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i think it's unintended usage of temp memory

rustic rain
#

what? Is he allocating it outside of job?

true mirage
#

but that sh.. job is time consuming

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😭

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I do not know why it takes time to check around 350000 nodes with some condition checks, weight calculation,..

slim nebula
#

I"m trying to upgrade to ecs 1.0 and there's a step which I can't seem to get working. It looks like I only have access to Entities 1.0.0-exp.12. How do I get 1.0.0-pre.15? Or how can I find the documentation for 1.0.0-exp12?

image.png
#

LocalTransform doesn't seem to exist

raw mica
# rustic rain Temp allocator is thread specific

Allocator.Temp is indeed thread local.

The allocation is not stack based, as of 2022.1 it uses a bump allocator that is reset based on the current scope. Most temp allocations are reset on the next player update. For jobs, you can allocate using temp inside your Execute as we provide a new temp scope for allocations that live only for the scope of the Execute method itself. And indeed, since temp allocations are thread local, we fail scheduling any native containers that use Allocator.Temp as you are almost certainly guaranteed to have problems if you refer to temp memory from another thread

#

Using Allocator.Temp inside Execute is encouraged if you really need to allocate (best to avoid allocations inside a job when possible but I understand that isn't always the case). The temp allocation will be quite quick since it usually amounts to a pointer addition rather than fetching a new block of memory from the heap.

#

And since it is thread local, there is no contention on such an allocation unlike TempJob which can be quite slow but provides different lifetime guarantees (4 frames for the alloc before we tell you you likely forgot to free your allocation)

rotund token
#

Speaking of TempJob is there really many use cases for it now over the WorldAllocator?

#

As far as I can see the only downside of WorldAllocator is it effectively doubles your memory usage which shouldn't be an issue for regular allocations and large frequent allocations should probably be cached in persistent

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(Obviously it's still needed if you aren't using Entities)

robust scaffold
#

And if you want immediate disposal following job completion, only tempjob and persistant allow for that [Deallocate]

rotund token
#

also i've always wondered about Temp fallback
From what I understand each temp block (by default) is 256KB in worker threads and 16MB on main thread, how many blocks can we have before we fallback? I believe it mentions for TempJob the number is 64 but doesn't mention it for Temp, so I've been assuming it's the same but not certain.

#

And what allocator is actually used for fallback? Does it go to the shared thread temp allocator?

rotund token
#

up there on features that cause the most unexpected bugs in a team

safe lintel
#

just cos that gets overlooked when figuring out inproperly disposing things? or some other reason?

rotund token
#

it's magic and completely obscure from looking at the flow of the system

#

someone wants to insert or remove a job, rearrange them etc

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suddenly it's disposing at wrong time or not disposing at all

safe lintel
#

yeah i can see that being a problem in a team

rotund token
#

made significantly worse if there are conditional scheduling paths

#

so that sure maybe it works for them without warning/error but push it to master and next play test the game is crashing and the play test is wasted

#

apart from that, it's inconsistent because it only works on NativeArray
totally feasible for someone to glance at a system, see all these native lists/hashmaps etc being disposed at end and notice the arrays were missing and think they are fixing it by adding a dispose to them

#

it's from the days of entities [Inject] where everything was magic and I just don't think it belongs anymore (maybe if it supported all containers there could be an argument, i'd still probably avoid it though)
but yeah no real big deal if others want to suffer with it since I can just ban it projects I manage as it's not required

#

thankfully with world allocator now i don't even need to worry about this as there's rarely anything to dispose anymore after a job

true mirage
#

How to get points with unknown length in job parallel for for each index? How to store it?

#

NativeHashMap with Native List does not work clearly

rotund token
#

Are you wanting to write an arbitrary set of data per thread?

#

If so NativeStream is your friend

#

Otherwise NativeMultiHashMap is a mostly a replacement for dictionary<Key, List<Value>>

true mirage
#

points for each chunk index are ordered

#

I want
index 0 : points 0 with size s0
index 1: points 1 with size s1
...
index n: points n

#

It is the output of job parallel for

rotund token
late mural
#

while installing entities 1.0 is it normal to get a bunch of burst internal errors?

true mirage
#

Something like it

# 
   public void Execute(int index)
        {
            var pathResult = _aStar.FindPath
            (
                _sourcePoint,
                _maxDistance,
                _targetPointArray[index],
                _targetChecker,
                _obstacleChecker,
                _weightCalculator
            );

            
            if (pathResult.Path.Points.Length > 0)
            {
                if(index==0)
                    Points1.AddRange(pathResult.Path.Points);
                else if(index==1)
                    Points2.AddRange(pathResult.Path.Points);
                else if(index==2)
                    Points3.AddRange(pathResult.Path.Points);
                
            }
#

Then, between Points1,...N select the one that it has the shortest len.
It works but ..
I did not understand how I can use NativeStream

#

In each step, I get a collection, how can I add them in native stream sequentially?

rotund token
late mural
rotund token
#

unity editor must be restarted after a burst version change so give it a restart

#

and hope it goes away

late mural
#

ok thanks!

solid rock
# true mirage In each step, I get a collection, how can I add them in native stream sequential...

https://docs.unity3d.com/Packages/com.unity.collections@1.4/api/Unity.Collections.NativeStream.Writer.html#Unity_Collections_NativeStream_Writer_BeginForEachIndex_System_Int32_ to ready the writer for your particular index
https://docs.unity3d.com/Packages/com.unity.collections@1.4/api/Unity.Collections.NativeStream.Writer.html#Unity_Collections_NativeStream_Writer_Write__1___0_ to write one element

late mural
#

im quite a noob at ecs and dots and all that stuff, and im trying to convert some stuff from gameobjects to entities, but im a little stumped by the component system of ecs, i use a lot of non blittable and non primitive custom structs and arrays of custom structs, would i use a managed component to store this kinda stuff, or is there a better component type for this sort of thing?

rotund token
#

yeah if you must store managed data it's usually best to probably store it on a managed component (class icd)

#

but you can also store it directly on the entity with addcomponentobject

#

if it's like something specific/unique (animator)

late mural
#

ok thanks for the info!

late mural
# late mural ok thanks for the info!

actually now that im thinking about it, all of my custom struct nonsense is just to dictate when and where the entity should be spawned, i could just get a monobehaviour to pass that information to a systembase perhaps? (if system bases still exist in 1.0)

rustic rain
late mural
# rustic rain what kind of information?

a prefab (do entity prefabs exist?), and a location, think that is about all the info the system base would need, and perhaps which chunk it belongs to, but that can just be easilly calculated from the position, the monobehaviour can work out all that info, send it to the system base (once again are they still used in 1.0?) and then the system base can deal with instantiating the entity prefab and placing it wherever it belongs

rustic rain
#

you don't need mono in any step of this

late mural
late mural
rustic rain
#

why would you?

late mural
#

my structs refuse to be accepted by entity components, and unless 1.0 added an inspector to system bases (do they still exist in 1.0?) then monobehaviour seems like the only choice

rustic rain
#

what structs?

late mural
# rustic rain what structs?

essentially some structs that say what biomes appear in what circumstances, and if so what are the chances for different prefabs to be chosen to spawn in any given location

#

it makes it really nice and easy in the inspector to add and remove biomes, and i dont see an easy way to put it in an ecs component, unless there is something else for this kind of thing

rustic rain
#

Baking

late mural
#

ah baking, i've heard of it a lot since 1.0 got released, guessing it is new? I'll look it up quickly thanks!

rustic rain
#

that's just conversion

#

but in new form

late mural
#

what is conversion, i dont think i've used that before either?

rustic rain
#

never heard of authoing components?

late mural
#

somehow nope

rustic rain
late mural
#

ah thankyou i shall quickly skim that!

#

ooh this is fascinating, this looks like it would allow creating of entities from a monobehaviour, potentially skipping the pain of a systembase, thanks so much!

#

ok so if i have this correctly, i could use all my structs in the monobehaviour, then use a baker to create entities from that monobehaviour, right, or have i misunderstood something?

rustic rain
#

just follow everything manual did

#

and add go inside subscene

#

add to that go that mono

#

and close subscene

#

and then find it in hierarchy to see result

late mural
#

no clue what that means, sorry im still quite used to my nooby way of doing things back in the 2021 versions of ecs, 1.0 seems to be quite a stepup in complexity, but thanks so much for all the help, ill mess around and see what i can get working!

jaunty sand
late mural
#

also is there an inspector for system bases yet, or still not?

late mural
#

hey did the entity manager get removed in 1.0 or did it change name, or is the 1.0 manual keeping it hidden for some reason?

late mural
true mirage
#

Can't we get the number of items for each buffer in NativeStream.Reader?
Buffer1 : n1 items
Buffer2 : n2 items
...
reader.ItemCount(bufferIndex)

solid rock
#

You can always store the counts you want in a separate NativeArray

true mirage
true mirage
#

InvalidOperationException: PathFindingJob.PointStream is not declared [ReadOnly] in a IJobParallelFor job. The container does not support parallel writing. Please use a more suitable container type.

#

If I add [ReadOnly] to PointStream, I get another error, you write it :/
If I define the writer as field as well, it says you cannot define same container (aliasing)

#

and outside the job

  _jobHandle = job.Schedule(roadPoints.Length, 1);
                        _jobHandle.Complete();
                        var s = job.Steps;
                        var (point, pointIndex) = job.PointCountForEach.MinBy(p => p);
                        var points = new int3[job.PointCountForEach[pointIndex]];

                        var reader = job.PointStream.AsReader();
                        reader.BeginForEachIndex(pointIndex);

                        for (var j = 0; j < points.Length; j++)
                        {
                            points[i] = reader.Read<int3>();
                        }

                        reader.EndForEachIndex();
solid rock
#

declare the field as the appropriate type with the appropriate attributes

# 
[WriteOnly]
public NativeStream.Writer PointStream;```
true mirage
#

outside the job

solid rock
#

I'm talking about inside the job that writes it

#

in the job that reads it you want a NativeStream.Reader

true mirage
#

No, I want to write in job

#

and read outside

solid rock
#

right

#

so

solid rock
#

in the job

#

outside the job you can do whatever you want

true mirage
#

yes but how can I read from Writer? convert to Stream?

solid rock
#

you never need to

#

writers are for writing

true mirage
solid rock
#

what about it

#

in the job you declare NativeStream.Writer

#

outside the job you create the stream

#

and pass it into the job with myStream.AsWriter()

true mirage
#

My trouble was I create Stream inside the job

#

So, generally it is bad to send data and then create natives in job ctor.
I should change them :/

solid rock
#

Yes it's bad especially because then where the heck are you gonna clean up (dispose) the native collections?

true mirage
# 
public struct JobA: IJob, IDisposable{
   public JobA(int3[] array){
      _nativeArray = new NativeArray<int3>(,..);
  }
  public void Dispose(){
     _nativeArray.Dispose();
  }
}

using var job = new JobA(...);
solid rock
#

ok but generally you need to use the array outside the job

#

so... it doesn't make sense to tie the array's lifecycle to the job's

#

often they're used across multiple jobs

true mirage
#

Can I stop a parallel for job in specific situation? for example when getting the first result then stop it entirely?

#

or it is better to use JobHandle.CompleteAll? is there an API for example CompleteAny?
For independant routines, should we use IJobParallelFor or JobHandle.CompleteAll?

rustic rain
void girder
#

Can I call SystemAPI.SetSingleton inside a job? Specifically Job.WithCode

shrewd night
#

Hi everyone! I'm currently trying to follow the ecs_tutorial for Entities 1.0 and I can't get past step 12. Even though I replaced LocalToWorldTransform with LocalTransform, I can't get the cannon balls to spawn every frame as shown in the step 13 gif. Is there anything else that needs to be modified that I am not aware of?

shrewd night
true mirage
#

I thought Burst can optimize it even for one job

rustic rain
#

you don't need jobs if you don't need it

#

and since you mentioned early return, I think all you want is just bursted method call

untold mirage
#

Currently there is no AspectLookup you can pass to an IJobEntity correct?

true mirage
#

https://www.youtube.com/watch?v=1bO1FdEThnU

I am surprised how he could reach that result.
However, my code is more expensive, it is 3d, 12 directions (neighbors).
The world size: 32,32,32
Checked nodes: 380,000
Many checks to detect an obstacle but simple, weight calculation.
But I have changed it to simple return false for obstacles and g=g+1 for weights. The result almost the same.
To find there is no valid path (search the entire world): Duration is around 2-3 seconds.
Target points are 5 for each request and then it finds the shortest path between these 5 target points. By jobs, it is almost 2-3 seconds. It is OK but the routine itself is heavy (2-3 sec)
Also, it is chunk based

YouTube
Code Monkey
Pathfinding in Unity DOTS! (Insane Speed!!!)

✅ Get the Project files and Utilities at https://unitycodemonkey.com/video.php?v=1bO1FdEThnU
Let's implement Pathfinding in Unity DOTS, we're going to write everything in a Data Oriented way (Structs) in order to benefit from massive performance!

Here's the follow up video covering Pathfinding in Unity ECS
https://www.youtube.com/watch?v=ubUPVu...

▶ Play video
shrewd night
proud jackal
true mirage
#

Does anyone have an experience about it?
I have defined my nativelist as Temp native container in my job. It works although It takes more than 1 frame.
IJobParallelFor, with 5 jobs

rustic rain
#

show code?

#

just paste relevant code with your containers here

true mirage
#

openList and closeList

rustic rain
#

well

#

doubt this method runs within multiple frames tbh

#

did you check with profiler?

true mirage
rustic rain
#

But did you check it with profiler?

true mirage
#

It takes 2-3 seconds FindPath when there is no path

true mirage
#

in Job workers
2-3 seconds for each
5 job workers

#

I take a picture, wait please

untold mirage
slim nebula
#

I assume you mean 2022.2.1f1

covert lagoon
#

I used 1.0.0-pre.15 packages on 2022.2.0f1.

slim nebula
#

does 2022.2.0f1 exist?

gusty comet
slim nebula
#

ok. Should I continue with 2022.2.0b16? or should I wait for 2022.2.0f1? or should I get 2022.2.1f1... I'm so confused. what's the recomended version for ecs 1.0 dev right now?

true mirage
#

@rustic rain

rustic rain
#

from what I see, it's just spread out as batches

#

not actually running through frames

true mirage
#

It is worth noting
I create 5 jobs (5 target points) and schedule it using Parallel Job For(5,1) and find the shortest one after getting all
It is inside a for loop in main thread loop over each source point (In my example, it is 8)

rustic rain
#

yeah, and your frame lasted for 1.7s

#

it seems

true mirage
#

Finally, how it is Temp but ..

#

😅

covert lagoon
slim nebula
#

where do I get it?

covert lagoon
#

Why do you want 2022.2.0f1 when we now have 2022.2.1f1?

slim nebula
#

that answers my question. thank you

covert lagoon
#

You should use the latest stable Unity 2022 release from now on, no more need for a beta version since 2022.2.0f1 was released.

slim nebula
#

perfect thanks

#

did a backup. updating now

rustic rain
#

hold up

#

2d packages are incompatible with latest entities?

#

still?

drowsy pagoda
#

Just found out about Physics Joints. Trying to get started on this, but not sure how to approach it from Authoring perspective. When I add the legacy joint, it doesn't convert. So I assume this can only be done via script? If so can someone give me a quick boilerplate on the essentials I need to keep in mind and what component(s) I need for this to work?

#

Ok, I see there is PhysicsJoint.Create[JointType](). But looking at the fields, I haven't the slightest clue how to connect two entities together with this.

#

Yeah I see very limited docs about this, especially for 1.0. If there is a tutorial page or video anyone knows of to get the basics started, I'd really appreciate a point in the right direction.

rustic rain
#

could be interesting for you

drowsy pagoda
#

It most definitely will. If you have link on hand, send it.

untold mirage
#

NetCode: Should entities sent through RPC command automatically remap? Currently on the receiving side I simply get an Entity.Null

viral sonnet
#

yes, they should

#

i had to remap them manually a long time ago but that's been added afaik

#

is it referencing a ghost entity?

remote crater
#

If an entity is deferred, could it still exist and I just am holding a deferred reference? One of the entities is still deferred (Index: -1)

#

Is it possible to detect if entity is defered, and to look for its actual entity?

#

From an entityCommandBuffer

drowsy pagoda
#

You can create a special buffer for this. And use ecb.AppendToBuffer(yourDeferedEntity). and on next frame it will be it's real entity id.

remote crater
#

AppendToBuffer<T>(Entity, T)

Appends a single element to the end of a dynamic buffer component.
Declaration

public void AppendToBuffer<T>(Entity e, T element)
where T : struct, IBufferElementData

Parameters
Type Name Description
Entity e

The entity to which the dynamic buffer belongs.
T element

The new element to add to the DynamicBuffer<T> component.

remote crater
#

I'm looking to simply get the entity reference. I already have my buffers and components working fine.

#

That was a very hard problem, but solved. I think I'm on an easy problem trying to deal with this reference, but I'm on brain lag and apathy of the end of a long project. 😉

remote crater
#

I can't just store e71 into a global array as it is a reference

#

Is the code: ecb.AppendToBuffer(e71); ?

#

Append to buffer takes 3 arguments public void AppendToBuffer<T>(int sortKey, Entity e, T element) where T : struct, IBufferElementData;

balmy sable
#

Hey so I read about the Unity jobs system and am rather confused as to how it's intended to be used. I see that it's async and/or multithreaded, similar to tasks or threads. However, you're intended to use Complete which will block the main thread until the job is complete. This makes sense for parallelized jobs I suppose, but it also seems like this is the intention for a singular job.

Why bother run a singular task on a job and wait in the main thread instead of awaiting a task?

drowsy pagoda
# remote crater I'm looking to simply get the entity reference. I already have my buffers and ...

I know what you are looking for, but you will not be able to get the entity reference on the same frame. You can either append that deferred entity to a buffer, or you can Add/Set[Component] to another entity that has a field for that deferred entity. Then on the next frame when you read it, it will be set proper. But you can't "hold" on to it as a reference because it's an struct (unmanaged), when you retrieve it, you only retrieve a copy of it and not a reference to it.

For the buffer approach, you will need to create something like public struct DeferredEntityElement : IBufferElementData with a field public Entity Entity;. Then when you have your deferredEntity, you can ecb.AppendToBuffer(entityThatHasBuffer, new DeferredEntityElement { Entity = deferredEntity });
And on the next frame you can retrieve look up that buffer and it will no longer be deferred.

remote crater
drowsy pagoda
#

I just loaded the DOTS sample project. And Getting a whole lotta errors. Let's start with The type or namespace name 'LocalTransform' could not be found (are you missing a using directive or an assembly reference?).
Is LocalTransform obsolete here, am I using the wrong version (which is the latest entities version). Can someone help me get their sample project up and running so I can examine it closer?

remote crater
#

want it?

drowsy pagoda
#

No, I need 1.0.

remote crater
#

kk

crystal tendon
#

I have a collectable Entity (coin) that I have a distance check to a regular character transform (mono) to see if they picked up the coin. Once a coin has been picked up what's the proper way to feed that back into a mono system the amount of coins picked up? For things like UI, shops, that don't live in the Entity sub scene.

crystal tendon
drowsy pagoda
#

I'm using 2022.2

#

0b16

crystal tendon
#

Is it compiling in the editor?

#

Or are the names just not resolving?

untold mirage
drowsy pagoda
#

Ok, I got the joints to actually interact. But I'm having a hard time understanding the design. I am trying to PhysicsJoint.CreateFixed but I'm not understanding what to put into bodyA and bodyB. Must they be both in local space, or world space? Or one in world and other is local to that world?

hazy acorn
# crystal tendon I have a collectable Entity (coin) that I have a distance check to a regular cha...

I presume you disable or destroy the coin entities in a job? You could feed a NativeReference<int> CoinsPickedUpThisFrame into the job & increment it. This doesn't work with ScheduleParallel, but it does work with a normal Schedule. Then in your UI you check the NativeReference every frame to check how many coins were picked up. Since you're checking CoinsPickedUpThisFrame on the main thread while the job may be running you need to either complete it OR you could double buffer the CoinsPickedUpThisFrame (this involves having 2 NativeReferences & swapping them each frame, this would then introduce a single frame of latency). Completing the job shouldn't be an issue if you ensure your UI updates a few ms later than your CoinSystem.

You could do the same with a CoinsPickedUpThisFrame component on an entity & pass that entity + a ComponentLookup into the job. Then you'd grab the component from the entity inside your UI code.

drowsy pagoda
#

And when I apply the joint, it always snaps one of the items to float3.zero world position.

#

Docs say for BodyFrameA Specifies a reference point and orientation in the space of body A. and BodyFrameB Specifies a target point and orientation in the space of body B.. Is reference point and target point the same thing? Or do they mean different things here?

crystal tendon
untold mirage
#

Now the question is, if that is intended or not

hazy acorn
#

Is there a better way any way to set up

viral sonnet
stone osprey
#

Entity ids are just ints right ? So could we theoretically spawn in like 2,147,483,647 entities ?

Why isnt it like a 3 byte sized int and the last byte is used for the version ? ^^
I mean 16 million possible entities is still a lot... or would 16 mil entities be some sort of bottleneck for some games or simulations ?

viral sonnet
#

yeah good question, int as version is probably overshooting it

#

i also find the size of entity annoying. 8 bytes is too much. 6 bytes would go a long way

#

but unity played it safe and i can respect that

stone osprey
#

Thats also what i thought ^^ The last byte could fit the version, therefore a entity could have up to 255 versions which is still great.

Do you think a limit of 3 byte entities ( 16 mill entities ) and one byte for the version ,could be a bottleneck for some games or simulations ? I legit have no idea

hazy acorn
#

The maximum number of entities in a World is 134,217,728.
Not sure why this is the limit but you can check the source code: k_MaximumEntitiesPerWorld in EntityComponentStore.cs

So it's not using all the indices anyway. (It is using the negative indices for EntityCommandBuffers. So in your example that'd come to 8million entities & 255 versions.)

255 versions feels too flaky because it's designed to just wrap around.

drowsy pagoda
#

My character can pick up an item (parents to character hand, disables physics). Then if that item can be attached to another item, the character can do that too. I successfully got them both to attach via Joint system.

#

But when I pick up any of the attached items, I get some funky behavior. I used fixed joint, but it doesn’t feel fixed. If I pick up one item, the other will go with it, but I pick up the other and the first one does go with it.

remote crater
#

Jason, I couldn't get it

#

public static Entity spawnCommandBufferQ(int parallel_Position, Entity e2)
{
Entity e;
e = ecb.Instantiate(parallel_Position, e2);
//HOW DO I keep e to use in future frames? I know you say the reference isn't held, but I'm not sure the syntax to hold it
return e;
}

covert lagoon
#

I don't know if there is necessarily padding at the end of a single struct in C#, but there should be for array elements.

viral sonnet
#

With correct alignment (smaller data types at the end) padding doesn't occur.

covert lagoon
#

How?

viral sonnet
#

it's like byte then int -> 8 bytes. but int then byte -> 5 bytes

covert lagoon
#

// entities[0]
0x0: int
0x4: short
// entities[1]
0x6: int // misaligned

viral sonnet
#

why would that matter?

covert lagoon
#

Aren't there arrays of Entitys in archetype chunks?

viral sonnet
#

there are but what would make them misalign? maybe you would get an odd number within a cache line but I honestly think that wouldn't matter in any way

covert lagoon
#

int, short, int, one of the ints has to be misaligned.

#

Well, would be misaligned if there weren't padding between structs as array elements.

viral sonnet
#

hm, are you assuming every struct has to follow a certain byte size?

covert lagoon
#

What does that mean?

viral sonnet
#

what does misaligned mean? 🙂

covert lagoon
#

Address of first byte isn't a multiple of type size in bytes.

#

A 4-byte integer at a memory address that isn't a multiple of 4 is misaligned.

viral sonnet
#

ok, thanks, I get your point.

#

do you know how crucial that still is for modern cpu? with cache line sizes of 64 bytes this seems hardly relevant.

balmy thistle
#

For performance?

viral sonnet
#

yeah

balmy thistle
#

On x64 I think the performance penalty is minimal, except maybe simd instructions

#

let me check

#

It looks like with the caveat that certain instruction variants require aligned memory, there's almost no performance difference

#

on x64

viral sonnet
#

thanks! good to know. why is int then byte not padded then? it seems to fall into the same problem area as byte then int

covert lagoon
#

For a single variable, maybe C# is smart enough not to pad if it sees that it's not needed.

rotund token
#

side note, related to this, you should be grouping your bytes/bools generally

covert lagoon
#

It's not the case in C and C++ iirc.

rotund token
#

int, byte, int, bool is 16 bytes not 10

#

int, int, byte, bool, will pad to 12 saving you 4 bytes

covert lagoon
#

Unity only supports x86, x86-64 and AArch64/ARM64 right?

#

Maybe these all support it.

#

But I don't know if the C# compiler will avoid padding when targeting these architectures.

viral sonnet
balmy thistle
covert lagoon
#

Oh wait, didn't the Player support the Wii U?

#

Wii U is PowerPC right?

#

I don't know if it's still supported.

gusty comet
#

I restarted my Visual Studio and it's showing up now.

#

So apparently you have to restart after updating to pre-15

gusty comet
#

The Entity Debugger is bugged, spamming ```
ArgumentException: A component with type:Unity.Transforms.Translation has not been added to the entity. Entities Journaling may be able to help determine more information. Please enable Entities Journaling for a more helpful error message.

I had previously added `ENABLE_TRANSFORM_V1` to get rid of another compilation error. What's the correct solution for this?
rotund token
#

restart unity?

gusty comet
#

They went away on their own, but sure I'll restart if it ever persists again. Is ENABLE_TRANSFORM_V1 the right way to get rid of all the "Rotation/Translation not found" messages after upgrading to pre-15?

rotund token
#

It won't be good forever

#

You will need to update your transform stuff at some point but it's useful now while you transition and have other errors

rustic rain
#

@rotund token sir. I can`t figure where did you get reference to 'PropertyDrawer' for your collider inspector. It just doesn't exist in my project for some reason

rotund token
#

because propertydrawer doesn't exist anymore

#

you should check for latest!

#

it's now PropertyInspector

#

which is in Unity.Entities.UI.Editor assembly

rustic rain
#

I checked github

#

PropertyInspector

#

this doesn't exist for me as well

#

allthough

#

I better check

rotund token
rustic rain
#

🤔

rustic rain
#

idk what's wrong

#

clean project

#

with entities, entities.graphics and physics

#

"Unity.Platforms.UI.Editor",

#

where is it from?

drowsy pagoda
#

You know how you can "freeze" rotation (angular) axis for physics body by setting interia. Is there an equivalent trick for linear (per axis)?

#

I want to freeze it without removing the PhysicsVelocity so that the joint system doesn't start tweaking

rotund token
#

i have not updated it for pre

rustic rain
#

I copied code from gitlab

rotund token
#

it's internal

#

you need to get internal access

rustic rain
#

to which namespace?

rotund token
# 
{
    /// <summary>
    /// Base class for defining a custom inspector for field values of type <see cref="TValue"/> when it is tagged with an
    /// attribute of type <see cref="TAttribute"/>.
    /// </summary>
    /// <typeparam name="TValue">The type of the field value to inspect.</typeparam>
    internal abstract class PropertyInspector<TValue> : InspectorBase<TValue>, IPropertyDrawer
    {
    }
rotund token
rustic rain
#

this platforms is not even found in assemblies serach

#

I'm so confused

#

ok

#

Platforms was renamed to Entities

#

Unity.Entities.UI.Editor

#

jeez

#

I almost went grey over this

#

😅

solemn hollow
#

i was just trying to create a sample scene for my AI package and run into the problem that subscenes need to be saved inside the assets folder 0.o

#

i am supposed to save it into a samples folder inside my package

rustic rain
#

What's wrong with Unity? Why SourceGenerator does not work?

#

In one project it works perfectly, in other it doesn't at all

#

oh wait...

true mirage
#

Why is com.unity.jobs in preview?! after several years

remote crater
#

I'm still having troubles getting a deferred entity reference to work.

rotund token
#

i believe all the entities packages had their dependencies removed from it in the prerelease

remote crater
#

DOTS is freaky since there's things that should be one line of code and are completely arcane to deal with for no rhyme or reason, but it's power is alluring so I can't look away.

rotund token
#

not really sure what your issue is, but deferred entities just work

remote crater
#

ArgumentException: All entities created using EntityCommandBuffer.CreateEntity must be realized via playback(). One of the entities is still deferred (Index: -1).

#

I store a reference to the deffered entity in an array

rotund token
#

yeah that means you saved the entity without using the command buffer

rotund token
remote crater
#

Plz plz plz, syntax me, you're my savior syntax man

#

I can be dropping skinned items in game today 🙂

#

like this second!

#

I promise you big money, you helped me toooooooons,like for real this is the million dollar question, provided I'm making kachillions

#

Thanks tertle for all your help, you're like the #1 guy who helped me finish my game

rotund token
# 
ecb.SetComponentData(entity, new MyComponent { Reference = newEntity }); // referencing on an existing component
ecb.AppendToBuffer(entity, new MyBufferComponent { Reference = newEntity }); // appending to an existing buffer
var buffer = ecb.SetBuffer(entity);
buffer.Add(new MyBufferComponent { Reference = newEntity }); // adding to a newly setup buffer```
#

apart from switch Set/Add

remote crater
#

oooooh

rotund token
#

these are basically the only way to store/use a deferred entity

agile dome
remote crater
#

So then I can just keep Array.Add(newEntity) then when I refer to newEntity later it works?

#

or do I nab it from buffer?

rotund token
#

i think with the new allocation stuff it wasn't making much sense to separate, and jobs was pretty empty these days anyway

rotund token
#

Add/Set return a deferred buffer that will be setup once command buffer plays back

#

and Append will just write to end of an existing buffer

remote crater
#

If myentity name is e71

#

ecb.SetComponentData(entity, new MyComponent { Reference = newEntity }); // referencing on an existing component

#

becomes

#

ecb.SetComponentData(entity, new MyComponent { Reference = e71 }); // referencing on an existing component

#

This is parallel writer...

#

I'm a buffer novice as well... Unless thats an icomponent?

rotund token
#

thats the icomponent version

#

the 2 below i wrote are the bfufer versions

#

heading to bed, gl!

remote crater
#

Goodnight, God bless, you rule

#

Oh those are many ways of doing it, not just a bunch of code to execute it!

#

woooo

rustic rain
#

Sadge

#

I tried to recreate GenerateAuthoringComponent attribute source gen

#

but Unity doesn't pick up my creates MonoBehaviour

#

class

#

so it can be used with inspector

rustic rain
#

Wait a second

#

I have an idea

#

Dud

#

I have genius idea

#

I'll make

#

GenerateStructComponentData attribute

#

which you put on MonoBehaviour

#

and it'll generate Baker and struct that copies all fields

#

from that MonoB to IComp

remote crater
solemn hollow
rustic rain
#

idk, probably because it's not in Assets folder

#

feels bad

#

I guess we gotta wait till .net CLR runtime comes in

#

so we can finally use all those features properly

#

not through Unity own implementation

#

I'm a bit done with Unity and Source Generators. They work really badly together. Debugging is way too painful

solemn hollow
rustic rain
#

a bit

#

SourceGenerators is compiler feature

#

and in order to attach custom one

solemn hollow
#

i know. im just saying i didnt see a way to use sourcegen in my case

rustic rain
#

even not sources

#

so as long as you can parse your serialized data to C# you can use them

solemn hollow
# rustic rain so as long as you can parse your serialized data to C# you can use them

yes its probably possible but id not like to monitor folders constantly for asset changes. id have to read from those files constantly while the user is working in unity. im not experienced with sourcegen so maybe there is an easy convenient way but for now it works with simple templates. its a bit annoying that the user will have those generated files in his asset folder but oh well

balmy sable
narrow scaffold
#

Hello Everyone,

I am working on a simple animation package for dots until the official one is there. I got it working kinda well for up to a 1000 animated characters at once but I am sure there are a lot of performance improvements I am missing.
It would be incredibly helpful if someone would take the time to do some code review for the package as I am not that experienced with the dots stack yet.

Instructions for installing the package and executing the sample can be found in the repo readme.
https://github.com/Bendzae/unity-dots-animation

sample.gif
GitHub
GitHub - Bendzae/unity-dots-animation: Simple animation system for ...

Simple animation system for the unity dots stack. Contribute to Bendzae/unity-dots-animation development by creating an account on GitHub.

solid rock
balmy sable
#

I see, thanks!

I'd probably just passively wait for it in a coroutine then, though I'm kinda surprised it doesn't already have IEnumerator methods for that

solemn hollow
# balmy sable I see, thanks! I'd probably just passively wait for it in a coroutine then, th...

if you look at how it works in ecs you get an idea how you can use it with gameobjects.
say a monobehaviour schedules a job. that same monobehaviour could call job.Complete before it schedules the new job. so every job that is scheduled has 1 frame to be completed on all all cores before job.complete would force it to be completed on the main thread. like that you dont have to poll whether it is finished or not you just know it is and it used all cores available to finish asap.

balmy sable
#

Just to make sure I understand you, in this scenario you run a single job and it has a lifespan of 1 frame, but Complete will force it to finish when the result is required?

solemn hollow
#

yes

#

but it most likely will be finished before job.complete is called

balmy sable
#

I see, I still have to get the hang of ECS to truly understand this I suppose but it does seem interesting and beneficial

solemn hollow
#

@balmy sableoh and instead of waiting until a job is completed you can also schedule another job with a dependency on the first job.

balmy sable
#

Yeah the dependency job management was a cool system since it allows separation of tasks into their own respective jobs

rustic rain
#

@robust scaffold sir. When should your 2D clamping system run?
After what system?

#

I only found job you pasted, not whole system

muted star
#

Hey everyone, has anyone else had the error Compute shader for Unity.Rendering.SkinningDeformationSystem was not found!?
It's from SkinnningDefomationSystem.cs line 48

narrow scaffold
muted star
woven hinge
#

Hi, guys, I have an issue with dots for some reason i have this simple dot that I try to spawn a few entities just getting started (I trying to learn to work with it ). The code is here https://paste.ofcode.org/HzVRpatp2kWNeBqnHpujX3 now my issue when i try to press play on unity it got freezes and wont go please note when i try debug it still freezes and not hold on rider or anything like it not connect to my code not sure any one have any advice how i can move on i few hours on this and kinda stuck

hushed lichen
#

Do you have anything that might cause an endless loop? 😅

woven hinge
#

i did put breaking point on the only place it got while but never hit

#

and one of the for for the rest no loops

#

ya this one hell of a cookie

#

have any idea what possibly this can be?

rustic rain
#

try to add conditional fallback if there is no result after 10 tries

woven hinge
#

where

rustic rain
#

in your while loop

#

each iteration do some int++

#

and check if (int > 10) return default;

woven hinge
#

something like this?

image.png
#

i am bit back in loops but the odd part i never hit in debug there so odd

#

*back = bad

rustic rain
#

but generally

#

you should not use loops like that at all

#

they can't be optimized

#

by burst

woven hinge
#

i know it has a reason why it there

#

also it on the aspect and not in system

#

i try get random transform that within radius

rustic rain
#

it doesn't matter where it is, it's just slow 😅

woven hinge
#

yap

#

true in most cases

rustic rain
woven hinge
#

ho like

#

?

rustic rain
#

you can generate offset

#

with random

#

and just add it to your current position

#

smth like

woven hinge
#

the radius is from a prefab

#

not my

#

i jusst us pie and random if that was the case i think

#

and thanks this retry is the way found my reason i get same trasform every type

true mirage
#

Is it worth defining custom non generic priority queue in terms of efficiency?

  /// <summary>
    /// Priority Queue implementation with item data stored in native containers. 
    /// </summary>
    /// <typeparam name="T"></typeparam>
    [NativeContainer]
    [DebuggerDisplay("Length = {Length}")]
    [DebuggerTypeProxy(typeof(NativePriorityQueueDebugView<>))]
    [BurstCompile]
    public unsafe struct NativePriorityQueue<T> : IDisposable
        where T : struct, IComparable<T>, IPriorityQueueNode
#

Generic NativePriorityQueue struct with IComparable<> and IPriorityQueueNode

lethal hatch
#

I have a very strange issue that I have been unable to debug for the past few hours, I have a nativeArray (public NativeArray<Quad> quads) of a struct called Quad which is set a value using a seperate job to calculate the quad positions. The problem I am having is that I cannot access it at all because it is apparently WriteOnly despite there not being any mentions of this in the code. If I try to set it to readOnly it just says that I cannot have both ReadOnly and WriteOnly at once.

rotund token
#

How are you passing the native array into the job

#

This is usually a sign the safety system can't find the collection to inject safety

#

And unset safety errors as write only

#

Most common case of error is passing it in via a pointer

#

This includes on a icomponentdata

#

Which is not supported by the safety system

lethal hatch
# rotund token Which is not supported by the safety system

ok I think I found a lead, I disabled [NativeDisableParallelForRestriction] on the first job and I am starting to think that the second job might be using the first nativearray of quads by refrence instead of by value. Could CopyTo fix that perhaps?

rotund token
#

im not sure what you really mean by this

#

native arrays are just a wrapper to a pointer

#

so they effectively work similar to reference* (length property excluded)

#

if you need a copy and don't want changes, then yeah you need to specifically make a copy

lethal hatch
#

yeah ok that didn't work either, even if I make a new nativearray and copy each value one by one in a for loop it still says that it is writeonly.

#

it just throws The Unity.Collections.NativeArray1[ProceduralMeshes.Quad] has been declared as [WriteOnly] in the job, but you are reading from it.

#

This is the code if it helps:

public virtual void GenerateMesh()
{
    Mesh.MeshDataArray meshDataArray = Mesh.AllocateWritableMeshData(1);
    Mesh.MeshData meshData = meshDataArray[0];

    QuadGrid topGrid = new QuadGrid();
    topGrid.Resolution = resolution;
    topGrid.quads = GroundCheckQuads(new PlanetaryBlockFinder());

    JobHandle quadGenHandle = QuadGrid.ScheduleParralel(topGrid, transform.position);
    quadGenHandle.Complete();

    NativeArray<Quad> quads = new NativeArray<Quad>(resolution * resolution * resolution, Allocator.TempJob);
    
    topGrid.quads.CopyTo(quads);
    topGrid.quads.Dispose();

    JobHandle meshGenHandle = GridMeshJob<CubeGridGenerator, MultiStream>.ScheduleParallel(
        mesh, meshData, resolution, quads, default
    );
    meshGenHandle.Complete();

    Mesh.ApplyAndDisposeWritableMeshData(meshDataArray, mesh);
}
drowsy pagoda
#

Is it possible to say create a character, on root go place a physics body, make it kinematic. Then on children place physics shapes so that they would be considered compound colliders but all move when I move the character's velocity via script?
Because I setup kinematic body, but all the children fall with gravity...

hybrid jay
#

oh nvm you arent using the attribute

#

try moving the topGrid.quads.Dispose(); to after the second job

#

might be triggering the safety handle, there's some weird dependency stuff sometimes

lethal hatch
#

hmm yeah still not working

#

really have no clue what could be going on here

hybrid jay
#

might be a generic job bug

lethal hatch
hybrid jay
#

could make a dummy job to replace it just to test

#

just write some random stuff to the array in it

lethal hatch
#

ok the code for generating the quads (in main thread) is literally just this now:

` NativeArray<Quad> quads = new NativeArray<Quad>(resolution * resolution * resolution, Allocator.TempJob);

    JobHandle meshGenHandle = GridMeshJob<CubeGridGenerator, MultiStream>.ScheduleParallel(
         mesh, meshData, resolution, quads, default
    );`

and it still isnt working unfortunately

#

still throwing InvalidOperationException: The Unity.Collections.NativeArray1[ProceduralMeshes.Quad] has been declared as [WriteOnly] in the job, but you are reading from it.

lethal hatch
#

hmm interesting

#

Ok I think I am getting somewhere now, If I set the quads in the second job as public NativeArray<Quad> quads => new NativeArray<Quad>(Resolution * Resolution * Resolution, Allocator.Temp); there are no errors

#

so it must be something happening when I assign a value to quads externally outside of the Job

#

if it helps anyone there is a similar value called 'Resolution' which is an int and works just fine, is it something to do with the fact that it is a nativeArray?

rotund token
#

it'll create a new native array every time you use quads

solid rock
#

You'd have to show the job

lethal hatch
lethal hatch
lethal hatch
# solid rock You'd have to show the job

this is the shortened version the stuff in generate quad isnt relevant

    public NativeArray<Quad> quads { get; set; }
    public void Execute<S>(int i, S streams) where S : struct, IMeshStreams
    {
        Quad quad = new Quad();
        
        quad = quads[i];
        GenerateQuad(i,quad, streams, Quaternion.Euler(0, 0, 0));
    }
#

the error is at quad = quads[i]; btw

solid rock
lethal hatch
solid rock
#

have you tried using a simple field rather than an autoproperty?

lethal hatch
#

wdym? sorry sorta new to this stuff

solid rock
#

this is an auto-implemented property:
public NativeArray<Quad> quads { get; set; }
This is a regular field:
public NativeArray<Quad> quads;

#

also are you actually assigning that thing to the job anywhere?

lethal hatch
#

oh right

#

yes its assigned before it is completed

solid rock
#

where?

#

wdym before it's completed

#

it should be assigned before it's scheduled

lethal hatch
solid rock
#

show youtr code

#

you've omitted too much stuff

#

what is this?
GridMeshJob<CubeGridGenerator, MultiStream>.ScheduleParallel( mesh, meshData, resolution, quads, default );

#

where do you actually make the job?

lethal hatch
#

public static JobHandle ScheduleParallel(Mesh mesh,Mesh.MeshData meshData,int resolution,NativeArray<Quad> quads, JobHandle dependency)
{
var job = new GridMeshJob<CubeGridGenerator, S>();
//job.generator.Setup();
job.generator.Resolution = resolution;
job.generator.meshData = meshData;
job.generator.quads = new NativeArray<Quad>(resolution * resolution * resolution, Allocator.TempJob); //quads would be here

        mesh.bounds = job.generator.Bounds;
        job.streams.Setup(
            meshData, 
            mesh.bounds = job.generator.Bounds,
            job.generator.VertexCount, 
            job.generator.IndexCount
        );
        return job.ScheduleParallel(job.generator.JobLength, 1, dependency);
    }
rotund token
#

can you just post the entire thing...

#

every snippet just adds more questions

solid rock
lethal hatch
#

ok just a sec

untold mirage
#

I just wish they would also add the forums here in discord. It’s sometimes really hard to follow all the questions s here in the chat format.

lethal hatch
#

as for the streams part that just handles multithreading vertexes, not really to important to the problem here

rotund token
# 
        G generator;
        [WriteOnly]
        S streams;```
#

am i missing something or have you just marked them as writeonly?

robust horizon
lethal hatch
#

...

#

......

#

fml it works

#

how did i not see that lmao

rotund token
#

you see why posting actual code is important, that took 5 seconds to debug

lethal hatch
#

thanks for your help anyways

#

I mustve thought it wasnt relevant or something because it wasnt being assigned when making the new gridmeshgenerator, but I guess it did huh

#

well anyways thanks for your help again, I will mention it if I get into more problems related to this... thats 5 hours or so gone by lmao

drowsy pagoda
#

How can I get the blob asset reference from a ChildCollider?

drowsy pagoda
#

I build a compound collider. Now I'm assigning the PhysicsColliderKeyEntityPairs, does it matter what values I set for ColliderKey (as long as they are unique to each child collider), or do they have to be within some range?

drowsy pagoda
#

Because the ColliderKey value is a uint does that mean that the maximum amount of child colliders a compound collider can have is 32?

rotund token
#

i haven't looked at is it a flag or just a key?

#

hmm

#

it seems to do a bit of both ^_^'

drowsy pagoda
#

Well in case of compound colliders, it references the child (leaf) colliders under the root collider. But docs also say that it helps identify triangle/quad on a mesh collider.

#

I was able to successfully and quite easily get the entities and colliders that are children of compound collider.

rotund token
#

yeah just looking at code

# 
        {
            uint parentPart = (uint)((ulong)subKey << 32 - (int)numSubKeyBits);
            uint childPart = Value >> (int)numSubKeyBits;
            Value = parentPart | childPart;
        }```
drowsy pagoda
#

Yup that’s what I was staring at the last 20 minutes lol

#

I wonder if we are allowed to child another compound collider…

rotund token
#

probably

drowsy pagoda
#

For parentPart, does it bit shift and then subtract? Or does it first 32-n and then bit shift that?

rotund token
#

threw it in my ide which force adds brackets to ambiguities

#

var parentPart = (uint)((ulong)subKey << (32 - (int)numSubKeyBits));

#

so yeah subtraction first

drowsy pagoda
rotund token
drowsy pagoda
#

What is the purpose of having the numSubKeyBits arg be uint when it always casts to int?

rotund token
#

stop people putting negatives in ^_^'

#

guess it just fails instead at numbers larger than int.maxvalue instead

drowsy pagoda
#

Lol. The Value field is uint right? Sorry not in front of computer right now

winter onyx
drowsy pagoda
#

Ok. After testing, the NumOfKeyBits is the same as the number of child colliders in compound collider. The root body (if it has a collider) does not count towards child count (whether it's single or compound). And all the colliders have col.NumOfKeyBits == col.TotalNumOfKeyBits. But I think that is because each child collider was not compound. I think if child collider is compound, the total will be bigger.

#

So when setting a PhysicsColliderKeyEntityPair->ColliderKey, it should follow this format.
new ColliderKey(totalNumOfChildCollidersOnTheRootThisColliderIsPartOf, uniqueIndexOfAllChildCollidersAttachedToThisRoot);

remote crater
#

Can someone peek at my code? I don't know the syntax.

rotund token
#

Singleton.entityDeferredRef.Add(buffer);

#

what is going on here?

# 
 
                var buffer=ecb.SetBuffer<EntityDeferredRef>(parallel_Position_Integer, e71);
                buffer.Add(new EntityDeferredRef { e = e71 });```
#

also you're storing the deferred entity on itself

drowsy pagoda
#

Yeah you have to store this against an entity that is NOT deferred. At start of your app, you can just EntityManager.CreateEntity() make a bare entity and give it a buffer that will keep track of deferred entities.
When you add the deferred entity to that buffer, just store the index of the buffer it was added to (important you add to buffer using ecb.AppendToBuffer and NOT buffer.Add, otherwise the deferred index will not propagate.
Then in your next frame, use the stored index to retrieve the buffer element from that dedicated entity, and voila, the entity will be valid. Of course, don't forget to cleanup > buffer.RemoveAt(thatSameIndex)

drowsy pagoda
#

Alright, I decided to stick with the Joint system. As you can see when I pick up the lid to the box, and "attach" it, I do so via joint system. Set transform of lid exactly where it should be, then attach joint.
When I go to pick up the box and place it on the ground, it tweaks out. I assume it's because the box position is changed while the lid isn't? So I wrote a code to scan all connected joints and adjust the position exactly where they should be in respect to the joint offsets. Even so, it still tweaks.

Can someone give me some advice on how to handle this?

Unity_OkacKWadfI.gif
#

When I pick up any item, it removes PhysicsVelocity, parents to character's "hand".
When I "attach" to a valid item, it adds PhysicsVelocity, sets global position, then create PhysicsConstraintBodyPair to the already pre-setup joint entity that has PhysicsJoint already pre-configured at baking.
When I pick up any item that has attachments, it scans for the root item that isn't attached to anything, does the same protocol with it as first mentioned.
When I place down the item, it adds PhysicsVelocity, removes parent, sets global position, scans all connected items via joints, and sets their global position respectively as well.
But it appears the joint system has both items fighting for position control because they are violating the joint constraints...

#

Please don't tell me the only way would be to remove the PhysicsConstraintBodyPair for each attachment, set global position, then re add it? just tried it, didn't work either. Same result.

#

Btw, all this happens on the main thread using EntityManager. No ecb or jobs.

rustic rain
drowsy pagoda
rustic rain
#

yeah

#

constant force towards target position

drowsy pagoda
#

Then I’d have to do it over two frames, first frame apply velocity offset, and next frame set to zero? For now, I just want it to snap to position without animating and such.

#

Ideally I’d like to do this in one frame.

#

Fallout/Skyrim, ah the good ol days. Beat both games more than once, and modded the crap out of them too haha. Thank you Nexus Manager haha 😂

rustic rain
#

no. it`s constant force, clamped by distsnce between position snd target position and current velocity

#

tick to tick system

drowsy pagoda
#

Woah that sounds cool. Can you show me a quickie?

rustic rain
#

not really

#

I only thought of it conceptually

#

physics samp

#

les

drowsy pagoda
#

Lol ok. I’ll do some research.

rustic rain
#

check them

#

i think they had example of mouse moving object

#

which is practically what it is

drowsy pagoda
#

Oh I see, you mean via World.ApplyImpulse?

rustic rain
#

you can modify velocity directly

#

if you know the correct math

#

if I understand correctly

#

it should be

#

targetPos - curPos = targetVelocity clamped by maximum step velocity (so your object doesn't snap instantly)

drowsy pagoda
#

But I want it to snap instantly in this case. I want the object to move from character to the ghost in the same frame, along with all connected parties.

rustic rain
#

oh

#

then just do targetPos - curPos = targetVelocity

drowsy pagoda
#

Yeah and on next frame I have to set the velocity to zero otherwise it will shoot way past it.

rustic rain
#

no?

#

you keep doing it

#

until you release object

#

because as your character moves, targetPos changes

drowsy pagoda
#

But the character won’t move in the same frame.

rustic rain
#

while object is snapped already, it's velocity will equal some small value that compensates gravity

rustic rain
#

it's all happening in Physics step

drowsy pagoda
#

Ok. I’ll experiment with this tomorrow. But if someone has other suggestions, I’m down 😉

rustic rain
#

just make a component which holds targetEntity

#

and get LTW of that entity

#

and use it as targetPosition

solemn hollow
#

whats the reason to use physics here? would some joints break or sth?

rustic rain
#

unless you want object to react on other physics (like, unable to go through wall)

solemn hollow
#

then i would go with setting transform directly too.

solemn hollow
#

i would even turn off gravity for the object completely if i used physics here because you can get small ocillations with gravity and counterforces not exactly matching each other

rustic rain
#

turning off gravity is fine

#

I think

#

fallout did that

#

and half life

#

or not

#

hmm

#

no, if I remember well, fallout didn't disable gravity

#

heavy objects used to have funny holding state

#

because they go up and down because of it's weight

solemn hollow
#

id not look at bethesda for bugfree examples of how to do things 🙂

rustic rain
#

it's more of a recreation of mechanic

#

because it felt good

late mural
#

wondering is there an entity equivalent of GetComponent<>() ?

solemn hollow
#

?

late mural
# solemn hollow ?

you know how gameobjects you can Getcomponent<whatevercomponent>() to get the component? Is there an entity version?

solemn hollow
#

not sure if trickquestion or not 😄
GetComponent<AnyComponent>(entity)

late mural
rustic rain
solemn hollow
#

its not available everywhere though. you might need to use lookups

rustic rain
#

or lookups

late mural
#

ok i tried this one, but it seems to not like my component sadly and refuses. PlayerData is just a simple IComponentData. any ideas?

image.png
late mural
solemn hollow
#

is your playerdata a class instead of struct?

late mural
solemn hollow
#

then things inside are not blittable

late mural
#

aha opened up unity, and yes things are not blittable apparrently, thanks so much, which that ides could tell ya that!

solemn hollow
#

i think you still could use EntityManager.Getcomponent though. SystemAPI is just designed with burst in mind

late mural
#

nah ill just remove the non blittable stuff for now, ill figure out how to deal with it later, wasnt important currently just some ui stuff

solemn hollow
#

generally speaking its better for performance to have more small components than few big ones. so you should probably split it off into a PlayerUIData or sth anyways

late mural
solemn hollow
#

and of course keep as many components as possible unmanaged

late mural
#

thought all components were managed lol, didnt even know unmanaged ones existed, how fascinating

solemn hollow
#

unmanaged is how they are supposed to be used. burst and multithreading cant deal with managed ones

late mural
#

welp i have no clue if im using managed or unmanaged components, guess i better figure that out sometime soon, thanks for all the info!

solemn hollow
#

to get the hang of it just try to schedule everything with burst. burst will tell you what to do. classes bad, structs good

rotund token
#

what a performance saving!

image.png image-1.png
late mural
#

ill try, unfortunately i love using forloops which i know burst breaks often

solemn hollow
#

wdym? for loops are the bread and butter of burst ^^

late mural
#

every time i've tried using a forloop with burst it tends to make it so it never ends, although that was back on the 2021 version so perhaps this 2022 version is better

solemn hollow
rotund token
#

i burst compiled it

#

by storing the struct in a pointer

#

so my input events could write to it

rustic rain
#

What version are you on?

#

of editor

rotund token
#

this kind of thing

image.png image.png
#

just to burst compile a single SetSingleton method

rustic rain
#

🤔

#

oooh

#

or wait

#

how does it work

#

this. with struct

solemn hollow
late mural
solemn hollow
rotund token
#

no

# 
    {
        public bool Turbo;
        public float2 Move;
        public float MoveY;
        public float2 Look;
        public bool LookEnable;
        public float Zoom;
    }```
solemn hollow
#

ah sry. then im just not sure i know why it was not burstable before

#

i havent gotten around to rewrite any of my SystemBases as Burstable ISystem

rotund token
#

because they are event callbacks

#

the issue is writing to the value in the struct didn't work

solemn hollow
#

ah yes of course

#

but that system needs to run every frame now. i am not a huge fan of converting events to polling

rotund token
#

?

#

it already ran every frame

solemn hollow
#

ah ok. i do inputs with changefilters

rotund token
#

it was basically exactly the same

#

oh i see what you mean

#

but yeah that doesn't bother me

solemn hollow
#

i mean that system takes so little time it doesnt really count as running.

rotund token
#

i could easily diff the past/current frames

#

before writing if i wanted change filters

solemn hollow
#

i was wondering if reactive systems are actually a bad thing. not so much for input handling but for other gamelogic. cause they could cause spikes in rare cases. better to have a little worse but consistent frame time i think

rotund token
#

why i'm not a fan of random time slicing

#

i'd rather keep my frame time constant

#

lower average fps is better than spiky fps

solemn hollow
#

not huge by any means but if i had multiple such timeslicers for different systems and the spikes interfere in a bad way it would get bad

solemn hollow
#

i was wondering how you could smooth out that spikes by allocating a specific time for jobs to run instead of just processing X chunks per frame

#

actually its not even the jobs running but the jobs beeing scheduled that cause the spikes

#

hmm its probably a problem very specific to my AI design. Since each agentType causes different combinations of Systems to run

rotund token
#

or how many jobs are you scheduling...

solemn hollow
#

in the current project the AI has 60 different systems running (not bursted yet).All those systems take about 1ms to run.

rotund token
#

burst them! 😄

solemn hollow
#

well those are the generic systems we so often talked about ^^ i need to codegen to burst them i think

#

havent gotten around to that yet

#

ATM i am working on improving editor workflow and getting samples going so i can show it to you 🙂

rotund token
#

changefilters don't really work here for me because pressed = true
stays true until new input comes

#

that's ok though, i really didn't need this anyway

solemn hollow
#

yes dont add the reactive overhead to it. simple is better

#

would you have any wishes for specific samples for Utility AI usage?
i was thinking:
resource gathering, attacking , coordinated attacking , getting into cover

rotund token
#

resource gathering loop is like my default go to

#

if you can make it react to combat etc even better

#

i think is great at showing potential

# 
Farmers walk around to destroy rocks (the grey cylinders) to make way for tilling the soil (creating brown-striped crop cells).
A plant grows in each crop cell. (The color and mesh of plant randomly varies.)
When fully grown, a plant is ready for harvest by a farmer. Farmers deposit plants in the nearest silo (grey-blue cylinder).
When enough resources have been collected into a silo, a new farmer spawns from the silo.
Farmers look for their next task in a limited radius. If no task is found, they look in an increasingly larger radius until a task is found.
For every fifth farmer spawned, a drone is spawned instead.
Drones fly and harvest plants. They do not destroy rocks or plant crops.
After depositing, drones hover over the silo until they locate a plant to harvest.```
solemn hollow
#

i think each sample needs to show some different concepts. resource gathering is the chaining of tasks.
combat is showing how to coordinate between agents and get dynamic attack positions
cover is showing how to evaluate massive amounts of entities globally and then distribute them to agents

rotund token
#

yeah but what i really want to see is interrupting tasks

#

and then continuing

solemn hollow
solemn hollow
# rotund token yeah but what i really want to see is interrupting tasks

hm but isnt that what utility AI doesnt even need to do ? 🙂
As soon as a Score is higher it fluidly switches tasks. My AI deals with decisions and not how those decisions are then beeing performed. if the user does not want them to be interruptable he can do so but by default you always get the best scored decision

rotund token
#

i've seen plenty of UI utility fail at this pretty badly

solemn hollow
#

ok thats weird 😄 but as soon as those tasks beeing performed are part of the utility AI i can see that happening

#

basically people trying to optimize performance by not evaluating utility as long as a task is active

rotund token
#

the issue i see that always ruins the flow for me is more

#

returning to a task

#

now i'm not sure this is on your AI system to handle

#

but it would impress me in a demo

#

i've always had a bit of an issue with utility ai without any state

#

i guess state is just another score though

solemn hollow
# rotund token i guess state is just another score though

yes i was just about to write that but was not sure if i get your issue correctly. interesting that you had problems with that. i havent touched a lot of other Utility AIs but i get the feeling i do some stuff a lot different then

#

your perspective will be quite some valuable feedback

rotund token
#

have you need seen a utility system like, switch rapidly between actions?

#

because there are like 3 actions that are very close in score

solemn hollow
#

yes. you need some hysteresis

rotund token
#

and doing 1 action inadvertently causes other scores to increase or that score to decrease

#

similar things tend to happen with interruptions

#

like stray arrow causes it to enter combat state just as the source dies

#

from say, chopping wood

#

but now instead of going back to wood chopping it decides its hungry so walks home

#

it's disjointing even if the correct action

#

anyway kind of a random rant

solemn hollow
#

no its not. i saw that kind of issues alot.

#

i dont know if i have solutions to every such case but adding momentum to desicions does pretty well

#

like if you decide to chop wood you get your decisionScore say 0.8 + another 0.5 for "recent Decision"

#

and that 0.5 decays over some time

#

specified in a decaycurve

rotund token
#

oh i don't have any solution, i'm far from an expert on AI i don't do a lot of work on it sadly

solemn hollow
#

but you got your own implementation going. makes you already a lot more advanced than most people i know 😄

rotund token
#

well i haven't really used it in over a year except to update entity versions

#

i still have no idea how production ready it is sadly

solemn hollow
#

im a bit stuck with people in academia that are more concerned with gamedesign and UX than concrete implementations

solemn hollow
#

jkjk

remote crater
solemn hollow
remote crater
late mural
#

probably a foolish question, but i cant find an answer anywhere, how do i make my gameobject be an entity, back in 2021 unity this was a simple checkbox, but i cant seem to find it in the 2022 version

rustic rain
late mural
#

the docs on them seem less than helpful, and i cant find many websites or forum posts about them (apart from people being confused on what they are, and not getting a reply, or getting very unhelpful replies), guessing this is something new in 1.0 then. Know any good sites for explaining subscenes?

rustic rain
#

and add game objects to them

late mural
#

how?

rustic rain
#

everything inside will become entity

late mural
#

i have the subscene, but how do i put stuff inside?

rustic rain
#

through right click in scene hierarchy

#

ah

#

just drag it in

#

or create from inside

#

subscene is just a scene

#

in edit mode

late mural
#

oh ok, ill try that thanks!

#

oh wow it worked, this is super cool, thanks!

#

so now in 1.0 you can just view and click on entities like you would gameobjects, this is so cool and so much better than the old 2021 version lol, still shows the non-unified scale for the entities though, how odd and fun!

rustic rain
#

even back in 2020 version

late mural
#

really, wow, every tutorial i watched back then never mentioned it, welp im glad i atleast know now!

rustic rain
#

your tutorials were probably from 2019

#

🤣

late mural
#

perhaps lol

#

is there any official method for getting the new input system to work with systembases yet?

rustic rain
#

people rolled different implementations so far

solemn hollow
#

whenever you ask if there is an official way to do something in ecs the answer is no atm

#

at least when it comes to things not directly concerning the entities package

late mural
#

ok makes sense thanks for the info!

remote crater
devout prairie
#

hey folks what is currently the best Unity 2022 version for working with dots 1.0?

woven hinge
solemn hollow
devout prairie
#

So the very latest as in 2022.2.1 released on the 12th?

image.png
#

i guess it would makes sense as i imagine they're trying to roll in as many fixes to any bugs as possible

solemn hollow
#

i dont know if there is a difference between 2022.2.0f1 and .1f1 when it comes to entities. im using 1f1 without issues

strange wagon
#

Hi! I'm working on health bar (simple quad entity) for my army of enemies, I see two solution

  • put health bar to enemy entity prefab as a child and enable it after first hit was detected
  • create health bar entity at runtime and put it as a child.
    For me first approach is better but want to ask is there any overhead for maintaining a disabled entity? if we speak in the context of thousands of objects.
solemn hollow
#

disabled entities still live in memory. id spawn healthbars when a unit is actually on screen and damaged

strange wagon
#

honestly, I'm not worried about memory, there's so much of it on all devices now... and the size of the healthbar memory will be very small in my opinion . I'm only worried about spike and fps, so that there is no performance degradation when the healthbar is turned on

#

I would like to know if any calculations are performed for disabled entities or if they are performed only when they are enabled

solemn hollow
solemn hollow
hushed lichen
#

I think the best way to find out would be trying. If it's not visibly degrading performance you can profile it if you care about imperceptible degradation

solemn hollow
#

having 1m entities off screen with healthbars and 10 on screen wont be a good idea

solemn hollow
strange wagon
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no no, my target is mobile devices. a'm talking about 1-10k max

strange wagon
frosty siren
#

Docs say I want to store system's data in components. Relevant to any data? EntityQuery for example

pliant pike
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whats the best way in dots 0.51 to move a gameobject and an physics shape together?

rustic rain
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allthough, I think you can store it on comps if you need it

devout prairie
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Well my first experience of 2022.2.1f1 is an interesting one so far

image.png
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To be fair, i closed it ( was a new project ) and reopened - it opened really quickly and is now visible/working as normal

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Just reopened to confirm, i've never seen Unity open so quickly

rustic rain
#

Since release I'm finally having fun with Unity

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baking seems fixed

#

Anyone yet checked?
Webgl works on new entities?

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back in 0.51 it didn't

misty wedge
rustic rain
misty wedge
#

f1?

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Ah, 1f1 is out

rustic rain
#

Any idea what atlas settings is it about?

image.png
#

I'm having same error during build

frosty siren
#

How can I check my ISystem was bursted?

viral sonnet
viral sonnet
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burst inspector should also show the system struct

stone osprey
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Each ECS chunk stores a list of entities, right ?
Does each chunk also stores a map to acess those entities ? Like Chunk.Get<T>(in entity) or something similar ?

rotund token
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But I guess even that's been out a couple of days now