archived-dots

[rotund token]

on server the runtime code to spawn the gameobject doesn't run

i might even consider removing CopyMode from authoring

and into the same part as instantiation

to avoid adding it to server

but anyway this here isn't that big a deal, pretty standard probably

the cool stuff is just being able to pick skin mesh renderers in scene view and returning the entity

it just ties the whole thing in

[viral sonnet]

yeah, that's cool to be able to do that. I don't have much trouble in my current project but in another it was impossible to work without an entity picker. I'm still perplexed that Unity hasn't done anything for it.

with an entity picker everything seems so much more solid

[pliant pike]

so you have a gameobject/skinmeshrenderer loosely tied to an entity?

[viral sonnet]

with no presentation entity, how are you handling animations? I mean there's no downside on putting an animation IComp on the main entity but I rather keep the archetype clean from anything presentation like

[rotund token]

main entity has the animator

for my client/server architecture the client is nearly entirely presentation so this is fine imo

saves an extra copy between things

if anything i prefer to move logic to separate entities

[muted field]

Do you have any advice on how to debug jobs, since we can't step through like normal code, mine compiled but the output is wrong so i have logic error in execute function

[rotund token]

why can't you step through them like normal code?

you can either turn off burst and debug like normal

or turn on native debug mode and hook up a native debugger and debug like normal (requires vs not rider)

[viral sonnet]

damn, since the new VS plugin where for some reason Entities and Collections are added to the main project, VS is choking hard on every line :/

[rotund token]

yeah i've been trying to find a way to remove that

bit annoying

dont want to see 2134 new projects in the side

i already have 12356234 of my own

[muted field]

My watch tools don't show anything in the unsafe list for some reason

[rotund token]

oh you mean the contents?

unity setup debug viewers for them
[DebuggerTypeProxy(typeof(UnsafeListTDebugView<>))]

so they should work

no idea about vs watch tools (assuming vs)

i haven't used vs much in the past few years

literally only time i pull it up id to debug native stuff

[viral sonnet]

hm, doesn't seem to have anything to do with the actual "Visual Studio Editor" package. Entities and Collections are created nonetheless.

[muted field]

how does that attribute work

[rotund token]

it's this setting here

unfortunately you're own packages in the /Packages/ folder won't generate if you turn it off

[viral sonnet]

i have turned this all off

[rotund token]

did you delete the actual project files

[viral sonnet]

yeah, deleted everything a bunch of times. csproj and sln files

I'm actually not sure when this started. I think it did with Unity 2020.3.33

but that doesn't make any sense

[rotund token]

hmm interesting

i tested this just last weekend

and could stop entities/collections generating projects

but since 90% of my code exists in the packages folder it doesn't help me much

[viral sonnet]

ahh, maybe it has to do with the asmref

[rotund token]

oh yeah

that could be it

[viral sonnet]

hm, I have them all in Assets/Plugins right now. Question is, where could I move them?

[rotund token]

do you have any code in Packages/

?

if not put them in there and it might hide it for you

[viral sonnet]

directly in the folder? no, i'll try

[rotund token]

not just directly

you'll need to turn it into a package

with a package.json etc

[viral sonnet]

yeah, wanted to do that if all fails.

I hope that's not the only way because frankly, having to add packages to an asset is annoying

still better than the editor lagging though

well, problem solved at least 🙂

[rotund token]

look at my project list 😐

[viral sonnet]

question about job handles. Is there any difference if you write Schedule(Dependency) or just Schedule() which uses default then?

daaaym

You are using Rider, right? Is it also slowing down like crazy?

Now I can't peek into entities methods and see the code. There's always something new breaking ... Previously it was aaaall working so fine. Then I couldn't see the decompiled code anymore, just the signatures. Now I can't see anything anymore. How is this even happening...

[rotund token]

nah no lag like this

once it's cached it's all fine

performance is why i moved away from VS in the first place

but features is why i stay with rider

[viral sonnet]

ah cool, VS takes like 20 seconds to evaluate a new line of code if it's correct with collections as project

[rotund token]

well that sounds horrible

[viral sonnet]

Yeah and VS is so expansive on top. I mean, I got and need it for work. The pricing looks pretty good for 1 year of Rider

do you have resharper too or just base?

[rotund token]

resharper is only a thing for VS

all those features are built in (and much faster) in rider

i used to use resharper but it slows down VS even more

(work pays for my copy though)

[viral sonnet]

yeah, also what I noticed with resharper in VS

[rotund token]

rider gives like discounts for future years, 20% second, 40% off third onwards

nice but kind of wish that 40% off was just the default pricing

be so much easier to recommend

[viral sonnet]

yeah, 40% is quite the discount

[rotund token]

at least for the individual pricing

make the companies stick with you to get a discount

[viral sonnet]

true, I don't understand why individuals are milked so much anyway. companies should make them enough money.

to be fair, rider is cheap compared to other software nowadays

[muted field]

so i got my polygon tester working but just curious about if i am doing it the best way.

currently i loop through my polygons on the main thread (Since theres only a handful of them)

the job takes the vertices of polygon A and polygon B (as a paralleljob for each vertex ) and runs the test in my main loop

    var job = new PolygonPolygonOverlap(poly1, poly2, flag);
    var handle = job.Schedule(poly2.Verts.Length, 1);

but im calling complete on the very next line, some of these polygons have thousands of vertices to check, am i not getting any benefit by calling complete on the next line ?

[solemn hollow]

@muted field you certainly lose the advantage of not blocking the main thread but you still get burst and parallel execution.

[muted field]

so whats the alternative? schedule it then poll in the update method to see if its complete? @solemn hollow

[solemn hollow]

the code that needs the result should schedule another job with a dependency on this PolygonPolygonOverlap

[muted field]

what would that job do tho? be empty?

[solemn hollow]

if you don't need the result of your job then i guess you don't need to do anything. just let it complete at any point later in the frame.
i thought u need the result for another operation that should then be done in this next job i spoke about.

btw are you using ecs or just monobehaviours with jobs?

[muted field]

i was reading the result on the main thread outside of the job

straight after i call complete atm

like this:

            for (int i = 0; i < _polygons.Length; i++)
            {
                for (int j = 0; j < _polygons.Length; j++)
                {
                    if (i == j) continue;
                    var p1 = _polygons[i];
                    var p2 = _polygons[j];
                    flag[0] = false;


                    var job = new PolygonPolygonOverlap(p1, p2, flag);
                    var handle = job.Schedule(p2.Verts.Length, 1);

                    handle.Complete();

                    if (flag[0])
                    {
                        Debug.Log("True");
                        result.Add(new int2(i, j)); // these 2 polys overlap
                        Debug.Log(new int2(i, j));
                    }
                }
            }

@solemn hollow are you saying this is basically going to be on the main thread all the time ?

[rotund token]

yes that will be main thread

[muted field]

how can i take full advantage of it then ?

poll complete in update?

[rotund token]

thats the general way for doing it in monobehaviours

if(!dependecy.IsComplete)
return;
dependency.Complete(); // this is still required to finalize

[muted field]

ah okay. is there a way to collect all jobs and schedule at once aswell im fairly sure i saw an example of that at one point

[rotund token]

you should schedule individually

but you can collect all handles and merge the handles into one

JobHandle.CombineDependencies()

[muted field]

doesnt that only apply if jobs depend on others, in my case they are all stand alone and dont rely on others

[rotund token]

JobHandle.CombineDependencies()
doesn't add them dependencies as each other

it just combines all the handles in to 1

so that you can wait on them all to complete

[muted field]

oh i see

okay thanks for the help 🙂

[rustic rain]

bruh

did Hybrid Renderer learn how to render objects without Companion GO?

looks like it did

omg, feels so bad

I need some kind of a way to draw lines. Gizmos for player, to see where characters are going.

Without Aline it feels like such a pain

since I need game objects, which I hate at this point

[rotund token]

? thats how hybrid renderer always worked

its never rendered game objects

[rustic rain]

oh

[rotund token]

are your lines just for debugging?

you can just use Debug.DrawLine()

[rustic rain]

no, it's player gizmos

shows direction of where ship is flying to

[rotund token]

oh well

that seems like something you'd have to code yourself

also not very hard

[rustic rain]

Is there a way to use built in Companion GO Tranform system?

I guess there's not

[rustic rain]

Ahem, very weird situation

So, basically I instantiate new GameObject() in my authoring component

aaaaand, this game object for some reason only exists when I open subsystem in edit mode

So, I launched game, no game objects

I turned on edit mode and they suddenly exist

How do I avoid it?

[rotund token]

what component is on it

[rustic rain]

empty

I use it so I can add other game objects with components on it

through prefabs

            dstManager.AddComponentObject(entity,
                new CompanionGameObjectComp() {Companion = new GameObject()});

[rotund token]

well i dont know what part you think is setting up a companion object

[rustic rain]

looks like this

[rotund token]

that gameobject ain't going to exist

[muted field]

does any of these native containers have a wrapper for readonly ? like normal collections have IReadOnlyList etc?

[rustic rain]

how do I make it exist, then?

[rotund token]

companion objects are created when unity finds one of these components

        {
            typeof(Light),
            typeof(LightProbeProxyVolume),
            typeof(ReflectionProbe),
            typeof(TextMesh),
            typeof(MeshRenderer),
            typeof(SpriteRenderer),
            typeof(VisualEffect),
#if PARTICLE_SYSTEM_MODULE
            typeof(ParticleSystem),
            typeof(ParticleSystemRenderer),
#endif
#if SRP_7_0_0_OR_NEWER
            typeof(Volume),
            typeof(SphereCollider),
            typeof(BoxCollider),
            typeof(CapsuleCollider),
            typeof(MeshCollider),
#endif
#if HDRP_7_0_0_OR_NEWER
            typeof(HDAdditionalLightData),
            typeof(HDAdditionalReflectionData),
            typeof(DecalProjector),
            typeof(PlanarReflectionProbe),
            typeof(DensityVolume),
#if PROBEVOLUME_CONVERSION
            typeof(ProbeVolume),
#endif
#endif
#if URP_7_0_0_OR_NEWER
            typeof(UniversalAdditionalLightData),
#endif
#if HYBRID_ENTITIES_CAMERA_CONVERSION
            typeof(Camera),
#if HDRP_7_0_0_OR_NEWER
            typeof(HDAdditionalCameraData),
#endif
#if URP_7_0_0_OR_NEWER
            typeof(UniversalAdditionalCameraData),
#endif
#endif
        };```

in the subscene

if you want a gameobject to put something on, just create it at runtime

[rustic rain]

but I create me own companion game object system

[rotund token]

so what?

soon as you close your subscene this game object is delete

                new CompanionGameObjectComp() {Companion = new GameObject()});```

[solemn hollow]

based on your questions earlier i think what you want to do is spawn your gameobject in the first frame the game is running and add it as a child to the companion. dont do it in conversion

[rotund token]

you haven't converted it to anything

so it's deleted

[rustic rain]

how can I create it outside of subscene then?

[rotund token]

just have a system create it

[rustic rain]

oh

not through authoring component, I see

[solemn hollow]

sry earlier i assumed you are already doing it in a system since you asked how to query it

[rustic rain]

well, I kinda did in a mixed way kek

I add prefab through authoring

and then convert it to other GO through system

[rotund token]

    var go = Object.Instantiate(create.Prefab);
    EntityManager.AddCompnentObject(entity, go);
}).WithStructuralChanges().Run();```

[rustic rain]

but all that assumed I have companion game object to attach to

yeah, I get the idea

I just didn't realise

that detail regarding GO being deleted in subscene

[solemn hollow]

yes hybrid workflow with subscenes is not really intuitive atm

[rustic rain]

I hope I won't need hybrid at all

[muted field]

why do i suddenly not have access to Schedule function ?

[rustic rain]

what is T?

[muted field]

public void Add<T>(in T job, Action<IJob> callback = null) where T : IJob

[rotund token]

add struct

requirement

[muted field]

still nothing

thats weird right ?

[rotund token]

works fine

remove the in

wait no that doesnt change anything still works

[muted field]

oh there we go now it shows

that was odd

[rustic rain]

hmmm
I create game objects in systembase now

still they are inside subscene

    public partial class CompanionGameObjectAddSystem : SystemBase
    {
        protected override void OnUpdate()
        {
            var em = World.EntityManager;
            Entities.WithStructuralChanges().ForEach((Entity e, in AddCompanionTag tag) =>
            {
                GameObject go = new GameObject();
                em.AddComponentObject(e, new CompanionGameObjectComp() {Companion = go});
                #if UNITY_EDITOR
                go.name = tag.Name.ToString();
                #endif

                em.RemoveComponent<AddCompanionTag>(e);
            }).Run();
        }
    }

[pulsar jay]

Maybe you need to manually assign them to a different scene? You could create one from code. Or maybe there is a way to get the parent scene of the subscene.

[rustic rain]

I just learnt that game objects can belong to subscene

I have little to no idea how to assign them to one xD

[pulsar jay]

https://docs.unity3d.com/ScriptReference/SceneManagement.SceneManager.MoveGameObjectToScene.html

[rustic rain]

I thought there is no scene differentiation

oh

[solemn hollow]

didnt u say u want to add your gameobject as a child to the companion? i dont think its a good idea to move the companion out of the subscene. why do u need to do this anyway?

[rustic rain]

first things first, I need to add game object

empty as base

[rustic rain]

I need it to have access to Unity components

in this case

it's Line Renderer

nah, moving away GO outside didn't help

hmm

[solemn hollow]

make a prefab with a linerenderer and spawn that instead of an empty GO

[rustic rain]

I do have that

[solemn hollow]

and in your query get CompanionLink

[rustic rain]

but in order to have vesatile system

I need game object to hook into

[solemn hollow]

then you have access to the transform of the comapnion. add your spawned GO as a child

[rustic rain]

with all other prefabs like this

[rustic rain]

here's the problem

there's no CompanionLink

kek

[solemn hollow]

huh

[rustic rain]

It's not created for my entities

which is exactly why I try to create my own here

            var em = World.EntityManager;
            Entities.WithStructuralChanges().ForEach((Entity e, in AddCompanionTag tag) =>
            {
                GameObject go = new GameObject();
                em.AddComponentObject(e, new CompanionGameObjectComp() {Companion = go});
                #if UNITY_EDITOR
                go.name = tag.Name.ToString();
                #endif

                var currentScene = SceneManager.GetActiveScene();
                SceneManager.MoveGameObjectToScene(go, currentScene);

                em.RemoveComponent<AddCompanionTag>(e);
            }).Run();

This also didn't help

[solemn hollow]

CompanionUpdateTransformSystem

check in there

maybe you just didnt reference the assembly?

[rustic rain]

?

wdym

[solemn hollow]

or is it internal now :S

[rustic rain]

I do have access to it

I used tertles trick

with internal

point is, it's not created at all

Hybrid Renderer renders mesh directly

without creating GO

[solemn hollow]

ah yes you need to trigger the creation with one of the hybrid components i guess...

[rustic rain]

which I don't have

and don't need

[solemn hollow]

you could add an empty spriterenderer to trigger it and later delete it. until you find a better solution

or you write the transform sync system yourself

[rustic rain]

I do have it

my GO are being deleted/or not created

I'm not even sure

[solemn hollow]

thats strange. i do spawn gameobjects too cause i need stuff from the 2D animations package. no problems there

[rustic rain]

it only works if subscene is in edit mode

without

[solemn hollow]

here my game is running with the gameobjects spawned without the subscene beeing in edit mode

[rustic rain]

how do you create them?

[solemn hollow]

huh why cant i post code? 0.o

sry new to this discord

what are the code tags here?

[rustic rain]

3 symbols of these

at start and at end

they are on ~ button

[solemn hollow]

im on a mac keyboard. need to search a bit 😄

Entities.WithNone<IsBootsTrapped>().ForEach((Entity entity, HybridArtManaged hybridArtAComp,in HybridArt hybridArt) =>
        {
            hybridArtAComp.artInstance = MonoBehaviour.Instantiate(hybridArtAComp.artPrefab);
            hybridArtAComp.artInstance.name =
                "(" + hybridArt.rootEntity.Index + "," + hybridArt.rootEntity.Version + ")" + hybridArtAComp.artInstance.name;

            ecb.AddComponent(hybridArt.rootEntity, new HybridArtChild
            {
                childEntity = entity
            });

            if (hybridArtAComp.artInstance.GetComponent<Animator>())
            {
                hybridArtAComp.animator = hybridArtAComp.artInstance.GetComponent<Animator>();
            }
            
            ecb.AddComponent(entity, new IsBootsTrapped());
            
        }).WithoutBurst().Run();```

[glacial bolt]

You can also copy entire code pasting string from #854851968446365696

[solemn hollow]

thanks!

Dont be confused by the extra stuff in there. i just split up the component into a slow managed and fast unmanaged one

[rustic rain]

wha

now it works

[solemn hollow]

the managed component contains the prefab and the reference to the instanciatedGo

[rustic rain]

I don't understand anything

I literally did nothing to code

[solemn hollow]

maybe the subscene had to be reconverted

[rustic rain]

maybe

[uncut rover]

Hello, do anyone know how to make the CopyTransformToGameObject system ??

[rotund token]

Can't you just look at the existing system and copy that?

(what are you trying to achieve?)

[rustic rain]

oh man, feels good that it works
feels bad that I spent almost hour on it

[uncut rover]

If the question is for me, I spawn at runtime an animated game object and animate it that works but I can't make the animated game object follow the entity. (I can make it with a custom system but not with the unity system)

[rotund token]

add CopyTransformToGameObject component

add Transform to entity - EntityManager.AddComponentObject(entity, gameobject.transform)

that's all you really need + LocalToWorld

main thing is just add the Transform so it can be accessed by TransformAccessArray

[uncut rover]

Thanks, I was just adding Transform component, not the gameobject's transform...

[rotund token]

i thought you were trying to re-implement the bahaviour or something which is why i suggested looking at system

[rustic rain]

Is there a way to run code only during frame/tick of adding component?
Basically, I want system to only run whenever X component is added.
And another system only to run whenever X component is removed.
And either must only run once per entity.

I do have an idea how to do it through adding another component Tag, but I wonder if there's built in way

[uncut rover]

that would be a reactive system which is what your are think about. the only difference is that the tag component is supposed to be a private ISystemStateComponentData in the system.

https://docs.unity3d.com/Packages/com.unity.entities@0.50/manual/system_state_components.html

https://forum.unity.com/threads/reactive-system-generic-way.919997/#post-6042521

[rustic rain]

hm

[uncut rover]

Unity is also not supposed to destroy entities that have remaining ISystemStatemComponent so that the system has a chance to do it's clean up when the entity is destroyed.

[rustic rain]

nah, I don't really need this one

I just need to be able to react of add or remove

so I can clean up LineRenderer points

or create them back

So I assume this is ready solution by you?

[uncut rover]

yes, but don't take the first post, there are some improvement done later (like detecting tag components) and also other people wit their own implementation.

[rustic rain]

this is lowest message

I found

[uncut rover]

should be good then but was not done in entities 0.50 so maybe some adjustments needed.

[rustic rain]

welp

xD

[rustic rain]

Sooooo
I want to make such game, where there would be some X amount of rooms.
And every character can travel freely between them, depending on some rules.

On screenshot you can see how it kind of supposed to look like.
Basically star systems. In order to travel between them, character must get to the edge of a system (which doesn't limit character from going further btw), that points into another system, to which character wants to travel.

What I'm asking for?
How can it be done through code?

Do I just make those rooms in world space?
Or maybe some other tricky way? Which hopefully will be simple enough in order to keep AI travelling between systems freely.

In the end all rooms (systems) are same:
Star in the middle. Planets around it.

[solemn hollow]

You could make a world per room. whenever an entity enters a portal you send it to the other world.

[rustic rain]

Is it efficient though?
Goal will be around 100 rooms

[astral parrot]

Hello there, I really need a help, why does the render mesh not working? it doesn't render a mesh and it's material after I spawn randomly on that area.

[solemn hollow]

I dont know your needs but id imagine you only want to simulate the room where the player is with the highest level of detail. The other rooms could probably run on a lower framerate? thats why i think worlds could be a good fit since you could update them in diffrent rates.

[rustic rain]

no, my goal is to simulate everything in detail.

Whole world must be simulated fully

[pliant pike]

isn't that what subscenes are supposed to be used for

[rustic rain]

huh, maybe

I just can't imagine yet

how it even supposed to work

[pliant pike]

that's what the whole megacity, I think I can't remember

I don't know, it must be pretty easy to load and unload and manipulate subscenes because thats the whole point

[rustic rain]

well, loading/unloading yes

but here the thing

I want world to be simulated fully

every tick

if player is in system 0
System 100 should be simulated in same detail

[pliant pike]

not to be a party pooper but that may not be always be possible

[rustic rain]

that's why it might require smth else

not subscenes

[pliant pike]

it depends on what your doing if its just data then I don't see why you couldn't(depending on how much data)

you don't need to render all the system, and calculate phsysics etc

just separate the data you need from the data you don't

and then have that as a background sim that's running all the time

[solemn hollow]

and thats where a background world comes in handy

[pliant pike]

yeah then load the systems when the player enters them using the data from that background sim

[rotund token]

out of interest, in your use case why does a 'background' world help here

you can't run worlds in separate threads

to me all it sounds like is you're adding overhead

[rustic rain]

first things first, there are no physics in game
It's all numbers basically.
Which makes sim kind of fast

[pliant pike]

well its probably best just to use a thread or several in the current world then, I just meant it as something you calculate all the time in the background

[rustic rain]

I can imagine how to do all that

in case where I literally just create rooms in world space

in huge distance from each other

but I worry about float precision

which will quickly degrade, if I try to follow space physics regarding distance between systems

[pliant pike]

well there are tricks for floating point precision

[solemn hollow]

i could run a much cheaper version of systems on the background world. like an AI that is gathering Food could just tick alot less but gain more food per tick. that AI could also skip alot of systems since it would also never have to check whether it is in player combat etc.

[pliant pike]

but do you even need to bother with that if the systems are so far apart then just treat them as separate solar systems

[rustic rain]

This game is about living in space.
So in order to jump between systems, you use some kind of FTL drive or smth, which makes big jumps from star to star.
Meanwhile if you simply try to fly from star to star without that drive, you should spend hundreds of years.
Which I'm not sure if it will work out if I simply drop those rooms in world space

[pliant pike]

if your not using things like physics etc, if your talking about things like trade you just abstract and simulate things

[rustic rain]

yeah, only things like that

[rustic rain]

and I ask, how I can do it kek

[pliant pike]

you don't need to literally be travelling between the systems, you just need to pretend the player is

[rustic rain]

yeah, I know

but I don't know how

one thing is to simply teleport player changing his trasform from 0,0,0 to 100mil,0,0

the other is to change his subscene or smth

[pliant pike]

like you can calculate the distance, and how long it would take to travel etc and create the environment around the player according to that

[rustic rain]

that's not what I'm asking about rn

how can I put it clearly...

[pliant pike]

I'm pretty sure thats how No Mans Sky does it

[rustic rain]

hmm

How to treat those systems

so all AI in them

can interact with each other

no matter in what system they are

so AI in system 0, which is furthest from system 100. Can always know there's another AI in system 100. And if required, will get the idea, how to get there.

first solution: rooms are literally apart from each other in same world space.

[pliant pike]

well if your talking about space which I'm presuming is really really big, you also have to deal with the time lag of information travelling from systems

[rustic rain]

nnnah, it's all just details
Which I don't need atm

I need base

for this all

the way I can create those system in the first place

on which everything else will be put step by step

[rotund token]

so you say you have 100 rooms

but how big is each room

and how much is in each of them

[pliant pike]

personally I think you try should start with one system first and simulate that, seeing what data that has then try adding another

[rustic rain]

I already have one system kek

[pliant pike]

ok cool, if you can simulate one you can simulate two

[rustic rain]

depends
some room will be big
another will be small

you know, like how certain stars have 10 planets
while other just 2 planets

that's irrelevant

[rotund token]

well it matters a lot

if they're 1k x 1k vs 100x100m

you can store a lot more in an area

before floats become an issue

[rustic rain]

well, it's more like distance between them which is issue

room itself is not that huge

[pliant pike]

how do you deal with the distance between planets

[remote crater]

If I wanted to exclude all entities with <bastian> component tag from a small ITriggerEventsJob query: https://pastebin.com/aTCjfpQk Is there a way to do that, or do I need to check each Entity during the job for the <bastian> component tag?

[rotund token]

need to check

[remote crater]

ty ty, tertle is a boss

[pliant pike]

there's an exclude thing in the entityquery None = new ComponentType[]{ typeof(Frozen) },

[rotund token]

yeah but he's not using a query

it's a physics event job

[pliant pike]

doh

[rustic rain]

well, I counted
On average those system are kinda 150x150 in size

but again, it's distance betweem them that is supposed to be huge

[pliant pike]

but like I said the distance doesn't need to actually exist the solar systems could exist as tables in a data base

[rustic rain]

well yeah player also should be able to fly indefinetely in one direction

or at least, have illusion of that infinite travel

ok, it's irrelevant detail

I still don't get, how can I make it work

one should not be able to fly from one system to another without portal

so if I put 2 systems in same world space

it kinda will be possible

WAIT A SECOND

what if I use Z axis

[pliant pike]

yeah that's pretty easy to do, I know one game moves the solar system around the player instead of player moving around the objects

[rustic rain]

for it

hmmm

[pliant pike]

anyway who will really fly for the years it takes to fly between the systems

[rustic rain]

this one is not the case
it's more like that when coordinates will become millions

and whether there's simply a better solution

than just dropping systems in world space far apart from each other

[pliant pike]

yeah you have to stay within a limit for that

you can delete objects that are to far and reset the player to zero

I've seen lots of ways of dealing with the floating point errors

[rustic rain]

meanwhile I need to keep simulation going

[pliant pike]

the objects that you see don't need to be the objects that are simulated though

[astral parrot]

Hello There! So, I'm trying to make an entity but it doesn't render (doesn't show in Scene Window and in Game Window) the mesh with material by using RenderMesh and RenderBounds. I'm trying to create using pure ECS which is EntityManager.CreateEntity(), and I made it with EntityArchetype.

// This is running on Start Method in MonoBehaviour Script
entityManager = World.DefaultGameObjectInjectionWorld.EntityManager;
minionArchetype = entityManager.CreateArchetype(typeof(LocalToWorld), typeof(Translation), typeof(Rotation), typeof(Scale), typeof(RenderMesh), typeof(RenderBounds));
// Followed with instantiating

I'm using 2020.3.30f1, Latest Hybrid Renderer, Standard Built-In Unity (Not URP/HDRP), I'm stuck at this point.

[remote crater]

I'm trying to find out why on death, some entities drop multiple loot drops. 1) Has anyone experienced something similar? 2) Is there a way to print the name of an entity's to specify which one it is in relation to similar types (maybe an index)? If so, I could see which one is the offender to get close to the source of the bug. (Oh I can just entitycomponent data to get a specific index. Still warming up. I think I got this dots now.)

[remote crater]

I think .5 requires one of those renderers HDRP or something

[rotund token]

just don't do this
create your entity with conversion or if you're stubborn at least use the hybrid utility to add all required components - RenderMeshUtility.AddComponents

you're missing a bunch of components
https://docs.unity3d.com/Packages/com.unity.rendering.hybrid@0.50/manual/runtime-entity-creation.html

[astral parrot]

Ah ok, I'll try with different method then

[solemn hollow]

@astral parrot But as GoodNewsJim already said the built in pipeline is not supported

https://docs.unity3d.com/Packages/com.unity.rendering.hybrid@0.50/manual/requirements-and-compatibility.html

[pulsar jay]

I am trying to do a simple "random" rotation for an entity like this:

float3 axis = new float3((float)math.sin(time), (float) (1d - math.sin(time)), 0f);
rotation.Value = math.mul(rotation.Value, quaternion.AxisAngle(axis, deltaTime * rotationSpeed));

But the rotation does seem to effect the scaling of the entity as if it was non uniformly scaled. Is this a bug?

[remote crater]

I know slow and arduous ways to do random numbers in DOTS, but is there a fast function?

[astral parrot]

finally after a long struggle, It does works, thank you!

but still is it necessary that Hybrid Renderer along with ECS will be requiring URP/HDRP pipeline in the future

[remote crater]

Turbo makes games has a 15 minute video on making randoms, so it ain't easy, so I won't useit for now: https://www.youtube.com/watch?v=s-nr9EMmhfo

[pulsar jay]

This is a simple default cube rotated by 1.3 around the X axis. The Transformation system seems to be broken 🤔

[rustic rain]

Can I somehow disable drawing of certain entities?
Or maybe exclude them from being used by certain systems?

[pulsar jay]

You can disable them by adding the disable component

[rustic rain]

no, I don't want to disable them

I only want to disable them for certain systems

primarily drawing

[pulsar jay]

Afaik you can only do this by changing their components so the stop matching the systems queries

[rustic rain]

feels bad

I need disable/enable components desperately then

kek

[pulsar jay]

If you wrote the system yourself you can have a IgnoreBySystemX component which you add to the entity and exclude in the query

[karmic basin]

There's a disable for rendering also

[rustic rain]

I know, but this one is for hybrid renderer

in other words

I have entities

in same space

but on different levels

and when I switch from one to another

I need to stop drawing entities

that don't belong to level I switched to

[pulsar jay]

maybe this can be handled by scene culling mask and multiple cameras?

[rustic rain]

I thought about it

as in using Z axis

but I'm not certain

whether this is a way

[pulsar jay]

I forgot that its a quaternion and I cannot just set one axis on it. But the problem with my rotation system still stays. I have the suspicion that the quaternion transformations are piling up rounding errors as the issue gets more extreme the longer/faster it rotates

Is there a way to "normalize" a quaternion?

[rustic rain]

how exactly are you rotating it?

[pulsar jay]

float3 axis = new float3((float)math.sin(time), (float) (1d - math.sin(time)), 0f);
rotation.Value = math.mul(rotation.Value, quaternion.AxisAngle(axis, deltaTime * rotationSpeed));

Thats the rotation code

[rustic rain]

ahem

why is your axis so weird

you rotate cube by using some dynamic axis xD

[pulsar jay]

its because I want a random looking rotation

I first tried rotating it by assigning some random sin, cos values to all 3 axis via EulerXYZ

[rustic rain]

well

[pulsar jay]

But randomly shifting the axis and rotating around it leads to a smoother result

[rustic rain]

maybe you should normalize axis first?

[pulsar jay]

I just thought that too. And yes you are right 😅 Thx

[solemn hollow]

How can i inspect the generated code for IJobEntityBatch jobs?

Im interested in how the LimitToEntityArray overload works

[solemn hollow]

nvm found the codegen but it seems like IJobEntityBatch doesnt generate code

[remote crater]

This is more of a design question with dots... If I wanted to add an indexing number on stuff dropped in a parallel job... I was thinking of throwing in a huge random variable and when indexing them later... But there's always the outlying chance of a conflict...

Say you had 3 parallel processes and you wanted to add indicies to them... How is that done? Is it something DOTS/ECS applies to every entity: A Unique qualifier identifier?

Right now if I make 3 lasers, they're all named laser, how do I know they're different? Like a memory address or anything would be good. Can someone help?

[solemn hollow]

entityindex is just that. unique to every entity

[remote crater]

thank you

[solemn hollow]

Well i need to correct myself. The index could in theory not be unique

[rustic rain]

Index + Version

no?

[solemn hollow]

because you could create a new entity which gets a recycled index

yes with version it is unique

[remote crater]

You solved a problem I had for about a year lol

[solemn hollow]

so Entity itself is the identifier u need

[remote crater]

Sometimes my lasers will hit a ship at the same exact frame, triggering a multi destroy event. I want to only drop its items one time, and not multiple times. It is tricky though... I tried complicated lists to make sure the same thing doesn't drop twice, but once again, that is done in a parallel environment so statics can't be used... Its a weird situation to think about. It's like a software architecture puzzle: https://youtu.be/895VPFsumKM Maybe when dropping the loot, I could verify in a special non parallel processing .for each?

[viral sonnet]

you have a race condition. try to linearize it some way. you can write which ships are destroyed to a native container that can handle it and then process the destroy events elsewhere in a single thread or in parallel with a fitting native container like NativeHashMap where the destoryed entity is the key.

[remote crater]

The multi destroy happens because my laser arrays are side by side like a dual or quad cannon and hit at the same time. Multi trigger events are not the bug.

I have a trigger event that adds a componenttag<bastian> to it.

[solemn hollow]

easy way to do it:
tag the ship that gets destroyed by adding a component. let a system run on all entities with that component that is handling the drop of loot.

[remote crater]

Then later I run a SystemDestroy

[solemn hollow]

yes. or you combine those systems

[remote crater]

Yes, correct, I too thought that would be the proper way to do it, but each has their own problems that would not allow it to work.

I can drop an excess amount of items or none at all. I have a lead, but it's very weird.

DOTS/ECS makes you think weirdly, and since it is non standard, you start even second guessing what you do know.

Cuz if you can't be sure what the issue is... You get a bit open minded about solutions and such.

[solemn hollow]

i assume your issue is that you handle damage events right away in a TriggerEventJob and drop loot then and there which gives u a race condition. Marking all entities that should die this frame and then looping over them once gets rid of that problem

you just need to make sure the order of your systems is right

[remote crater]

I think my Issue was using Remove instead of RemoveAt lol

Like I said, you can trip over stuff you should know when you're so busy stretching your mind to understand parallel processing.

[viral sonnet]

tagging entities requires a structural change so -> not good

[remote crater]

The problem is: If I tag it to die and drop loot in parallel: And 2 or 4 lasers hit, then it does 2 or 4 drops

It is common since lasers are aligned exactly next to each other as a space ship shot.

[solemn hollow]

an entity cannot be tagged multiple times with the same component so that cant happen.

[solemn hollow]

true but is it a problem if once every x seconds a ship is destroyed?

[remote crater]

You can indeed add many of the same component to an Entity

[viral sonnet]

no that's not possible

[remote crater]

ok, then the(3rd party) documentation I read online was sketch

Thank you

[solemn hollow]

maybe you are confusing it with DynamicBuffers

[viral sonnet]

well, no but the solution is quite hacky

[remote crater]

I think you guys gave me enough info to solve this.

[viral sonnet]

tagging is not needed. just write it to a NativeList.ParallelWriter or smth

[solemn hollow]

Adding Components to trigger Logic on Systems is considered hacky 0.o

[remote crater]

1. Since Triggers and Obsticle collision does not happen in parallel... I can have an array list of things hit this frame.

[viral sonnet]

the solution to this specific problem is hacky

[remote crater]

2. I will populate this list in my main Singleton global file of statics.

[solemn hollow]

i prefer tagging as a quick solution because i dont want to pass nativeArrays between system boundaries

[remote crater]

3. On init of the frame, trigger will will init List triggerlistEntitiesDead=new List<int>(). Obsticle the same.. And when issuing a destroy, will cycle through those...

Now this assumes Trigger/obsticle run synchronous themselves and non asycnrhonously parallel.

[viral sonnet]

tagging during runtime is considered malpractice and it's abused or encouraged way too much

[remote crater]

To be honest I don't even have any solution at the moment

[solemn hollow]

well tagging is the only way to not have to poll with systems atm. so for infrequent events thats what i am using until disable/enable components is out

[remote crater]

I tried Manarz way already months ago... It has one problem to the next...

I may be closing in on tying up the loose ends tho

I don't mind if the first iteration of my game is tied together with duct tape and bubble gum as long as the design is refactor friendly.

[viral sonnet]

as mentioned above. write destroyed entities to a NativeList.ParallelWriter, NativeQueue.ParallelWriter or NativeHashMap.ParallelWriter when you don't want to deal with handling multiple entities in a list and then process them in a single thread. If you want to have good refatoring split logics because your ITrigger is doing way too much at once.

[remote crater]

Thank you enzi. I will study those.

[viral sonnet]

the faster you get comfortable with this the better your code and architecture will be

[remote crater]

Are there more memory things that can be changed in the parallel environment?

I remember catching wind of those about 8 months ago...

[viral sonnet]

what do you mean with memory things?

[remote crater]

Like if I have a parallel thread

and I'm writing to anything...

other than a parallel EntityCommandbuffer

I didn't know I had anything I could write to

[viral sonnet]

well, any NativeContainer that has a ParallelWriter. NativeStream is also great

fastest writer there is in parallel out of the box

can also read in parallel because of the logic how it splits writes

[remote crater]

Could it do a running total?

I'd be excited if I had a counter anywhere.

2 questions: If it can write across multi threads, and when it reads... is it using lock / unlock? Or could maybe I miss data mid process because though it was safe, I was writing an index of something that got destroyed while checking it someplace else?

[viral sonnet]

https://docs.unity3d.com/Packages/com.unity.jobs@0.50/manual/custom_job_types.html at the bottom is an implementation for a thread safe counter

[remote crater]

kk ty

[viral sonnet]

parallel writers for queue, list and hashmap use Interlocked. NativeStream has its own memory block for every thread

so no, nothing can be missed

also something I can recommend: https://github.com/Dreaming381/Latios-Framework/blob/master/Core/Core/Internal/UnsafeParallelBlockList.cs

[remote crater]

Well I have a lot of reading material and things to try out. I am very much appreciating this. If I ever make bank, find me and you get to withdraw lol.

[viral sonnet]

hehe, that's nice of you but you're welcome without any money 🙂

[remote crater]

You say that til I'm making World of Wacraft money 😉 Then you'll be like,"Thanks doesn't cut it buddy! If you a real funk soul brother, then cut me a check right about now!"

[viral sonnet]

haha, well, when your swimming pool is overflowing with money I'm open for donations 😄

[safe lintel]

just dont scrooge mcduck dive into a big pit of coins 😉

[solemn hollow]

Got a broad question concerning some AI problem:
Let's say i have an EntityQuery and a DynamicBuffer on each AI.
Each Agent now wants to read Data from all Entities contained in the Query and the DynamicBuffer (the intersection of them). If the DynamicBuffer is empty the query alone defines the targets to read from.
Should i loop over all Entities in the query and check if the DynamicBuffer contains the Entity or should i loop over the DynamicBuffer and check if the Entity Matches the chunk (/ archetype). Looping over DynamicBuffer gives me random memory access while looping over the chunks potentially loads alot of unnecassary data if the DynBuffer is small...
It feels like i should implement both methods and schedule the diffrent variants depending on the size of the DynBuffer. I am overthinking it right? 😄

[viral sonnet]

It feels like i should implement both methods and schedule the diffrent variants

^ This 🙂

Although I would bet that looping over the chunks is a lot faster

also depends on how big the DB is and if it's a chunk based DB or heap based one

sounds like you don't know the internalCapacity of the DB so I guess it's a heap based one

[solemn hollow]

yes heap based. the main problem is that its a very generic Utility AI that is fully authored in the Editor. if someone wants his AI to look at 1000 targets he can.

For example you could let your AI evaluate all coverpoints. Or you could restrict it to only see Coverpoints in a certain range (where the DynamicBuffer comes in)

[viral sonnet]

hm, some hash based pre-processing could speed the process up

iterating brute force is not good if there are no limits

[solemn hollow]

creating a HashSet out of the DynBuffer on worker threads is expensive too though

[viral sonnet]

well, do you really need a DB?

[solemn hollow]

yes. its a bit hard to explain but i got a hierarchical Utility AI that writes intermediate considerations into DBs to later use them in higher up considerations

those consideration results are what is used as a filter

basically i need arrays upon arrays on entities

[viral sonnet]

Are decisions spatial based? If you mention cover point then they are

[solemn hollow]

alot of them are in the end.

often its just a direct vectorization of the distance. sometimes its a Overlapsphere gathering targets

[viral sonnet]

ah so there is already physics involved? and those results are written back to a DB and later evaluated?

[solemn hollow]

yep in some rare cases

i try to avoid physics

atm im really not happy with the physics package performance

[rotund token]

Interesting

What part is slow for you?

[viral sonnet]

you can write your own quantisation and spatial lookup, especially when it's on a grid. doesn't need to be a full blown BVH 😄

[rotund token]

Make sure you turn off physics validity checks

[viral sonnet]

physics is quite fast though so I don't really understand that part

[solemn hollow]

sadly not a grid and im not experienced with physicsengines

[rotund token]

That thing slows it down 10x

[solemn hollow]

yes i know it should be fast but somehow it takes 7ms in my frame

[rotund token]

How many collisions?

[solemn hollow]

and i tried to reduce potential collisions

where can i actually see the collisions that are happening? didnt find a debugger for it yet

[viral sonnet]

huh, yeah, that's too much but I think that can be optimised

tertle, you mean the integrity checks for physics, right?

[solemn hollow]

the whole AI takes little over 2ms on mainthread and its basically all the gamelogic i have. 100s of agents possible... the physics is the main bottleneck atm ^

[rotund token]

Yeah that's the one

Sorry in bed and can never remember names

[viral sonnet]

np 🙂

[solemn hollow]

ah i have those on

[viral sonnet]

also make sure that leak detection and safety checks are off

[solemn hollow]

yep those settings i knew

[rotund token]

Jobs debugger + integrity checks nuke physics performance

Integrity checks add a bunch of extra stages it's super slow

[solemn hollow]

is physics integrity setting new?

another problem i have with physics is that it basicly enters a performance death spiral since the lower frames i have the more often physicsstepsystem runs in a frame...

i rly need to get back to 60fps

[rotund token]

Well that's just fixed update in general

[solemn hollow]

yes but i guess that is why it takes a whole 7 ms

[rotund token]

Can always run it at a different tick

[muted field]

they really need to have IJob and IJobFor inherit from another base interface so i can use callbacks 😦

my fancy idea of using call backs on complete now wont work 😦

[solemn hollow]

Are your compile times really bad too? My iteration speed sucks

i did split everything into assemblies. no idea what else i can do

[muted field]

whats the difference between IJobFor and IJobParallelFor ? they seem similar to me

[rotund token]

I job parallel for is the legacy version

[viral sonnet]

yeah, they merged this. so IJobFor can now Schedule and ScheduleParallel. pretty confusing, not sure why it's still there

[rotund token]

Not sure why they didn't remove parallel for yet

Basically they standardised schedule naming

And couldn't automate upgrade

[viral sonnet]

if a newcomer queries IJob, the list is just overwhelming when it's not that bad actually

[muted field]

oh so dont use parallelfor then since it'll be deprecated eventually?

[viral sonnet]

yes

[muted field]

so is JobFor.ScheduleParallel the new version of IJobParallelFor or JobFor.Schedule? Not sure why it has both schedules, the parallel version requires dependency even though i dont have a dependency for the job., so currently i just put default but makes me wonder if im using the function wrong

var jobHandle = jobFor.ScheduleParallel(arrayLength, batchLoopSize, default);
var jobHandle = jobFor.Schedule(arrayLength, default);

what does the second Schedule method do with a IJobFor ?

[solemn hollow]

Schedule makes it run on a single worker thread as opposed to multiple

[muted field]

oh i see

[muted field]

yay got call backs working \o/

[muted field]

by any chance is this related to some disposal issue with my collections:

im not sure of the origin of this error, its happening when im not even in play mode which is odd

but it just started happening since implementing and playing around with the job system

[rotund token]

never seen it

[muted field]

i have found the culprit it related to [BurstCompatible]

but not sure why. removing it from my job fixed the error

[viral sonnet]

did you mean [BurstCompile]?

[muted field]

no i have [BurstCompatible] on the Execute method

according to the description it goes on public methods

[rotund token]

yeah thats only used for unity collections auto documentation and unit tests

you dont need to worry about that on jobs

[muted field]

oh okay

hmm not sure whats causing the error then but it only started happening once i got my jobs working havent been working on any thing else for over a week in the project

[coarse turtle]

anyone ran into an issue with platform's build asset configuration where if you define the Scripting Defines that you need in a build, the build will take all of the Editor's Player Settings Scripting defines instead? Not sure if this was a recent thing with the latest DOTS 50 upgrade... 🤔

[rotund token]

you mean the edit -> project settings -> player defines?

because yeah it will use those

the ones in build config are additional defines on top of the player ones

so you can specify a server or client build etc

[coarse turtle]

so it's not supposed to replace the scripting defines in a build? 🤔

[rotund token]

as far as i'm aware no because it'd break a lot of things

[coarse turtle]

huh seems kinda counter intuitive cause that means it sounds like regardless I need to edit the scripting defines on the editor for the build :/

[rotund token]

i've never encountered a situation where i'd want to take defines out of a build

what is the use case?

[coarse turtle]

so in the editor right now I define SERVER and CLIENT so i can launch both a server and client and do quick testing in the editor. But in a build I only want to build a headless server so I have a build configuration that only defines SERVER

For the client I have a build config that only defines CLIENT and I have a build pipeline that builds them out separately

ideally, I'd like for each build to not have both server and client defined so I could just have 2 separate builds, but if that wasn't the use case then I guess I need a different solution 🤔

[rotund token]

netcode does this by having UNITY_SERVER, UNITY_CLIENT and if neither are defined do both

so you just add your define to your specific build config

[coarse turtle]

yea I think the build config isn't respecting that and is building both with CLIENT & SERVER

[rotund token]

well it is

[coarse turtle]

oh 🤔

i guess I should follow what netcode is doing then :/

[rotund token]

but thats what i mean by netcode
you don't specify UNITY_SERVER, UNITY_CLIENT in editor

so if none are specified it sets up both

[coarse turtle]

damn, yea I guess I need another solution lol

ah cool...I guess i was lucky enough that i mainly use those scripting defines in the world boostrapper, much thanks @rotund token

[viral sonnet]

I've dropped this now on github: https://github.com/enzi/Entities.Exposed most of the credits go to @rotund token 🙂

[safe lintel]

wonder if these verbose naming scheme will survive 1.0

[molten flame]

I hope not, but I also don't want my muscle memory for GCDFE to be voided either lol

@rotund token you said you are using or planning to use rayfire.
Are you using netcode in your game as well?
I've been struggling to think of a way to handle high detail destruction in a networked environment.
Having 100+ ghosts per destructible object isn't really feasible.

[rotund token]

yeah i use rayfire just to precompute some fractures - nothing at runtime though

and i use netcode

#archived-dots message

i put a demo here a couple of months ago

[molten flame]

very interesting

[rotund token]

we have preproduction project that is heavily going to rely on destruction (cant say anything more than that) so this was mostly just a proof of concept in my own time of how i was considering tackling it

apart from that it'll have a layer of particles etc on top

and probably shader based superficial layer

[molten flame]

Do you "spawn" each fragment as its own ghost when it becomes dynamic?

It's very interesting that you have some simulation on the server and some on the client

[rotund token]

only the red ones

the red ones are ghost, the rest are client only

each whole piece has a bit field on it

and any number of those bits can either be ghost or client only piece

[molten flame]

Interesting... so are the client pieces visual only?

If so, that's a pretty reasonable optimization.
For me the physics of the destruction is more about removing collision geometry.
Altering collision geometry at runtime is always a massive pain.

[rotund token]

they still have colliders etc to exist in the physics simulation but disappear quickly when coming to rest

i don't think from a rendering performance i can leave huge amounts of debris around

let alone a gameplay perspective of it blocking players

so i leave X pieces that are the ghosts around for player to collect or whatever, and the rest will be client only in the same physics sim but disappear after Y

anyway that was basically how i did it in the proof of concept. was trying to limit rendering + network costs.

[astral parrot]

Hi, me wanna ask, is there a way to run a script when the GameObject is converting to entity?

What I mean is that run a script before or after converting to entity

[rotund token]

You can use GameObjectConversionSystems in different update groups

There's groups like
GameObjectBeforeConversionGroup
GameObjectAfterConversionGroup

the actual loop looks like

                {
                    DeclareReferencedObjects(conversionWorld, conversion.MappingSystem);

                    conversion.MappingSystem.CreatePrimaryEntities();

                    conversionWorld.GetExistingSystem<GameObjectBeforeConversionGroup>().Update();
                    conversionWorld.GetExistingSystem<GameObjectConversionGroup>().Update();
                    conversionWorld.GetExistingSystem<GameObjectAfterConversionGroup>().Update();
                }```

where the system that executes IConvertGameObjectToEntity, called ConvertGameObjectToEntitySystem, runs in GameObjectConversionGroup

[solemn hollow]

@rotund token yesterday we briefly talked about physics. disabling integrity checks helped a bit but its still not great considering it barely has to do anything. I suspect there are some physics interactions i am not aware of. Is there some kind of debugger i can use to show collisions etc? I know there is one for havok but is there for unity physics?

[rotund token]

yeah theres a debugger for physics

PhysicsDebugDisplayAuthoring

        public int DrawColliderEdges;
        public int DrawColliderAabbs;
        public int DrawBroadphase;
        public int DrawMassProperties;
        public int DrawContacts;
        public int DrawCollisionEvents;
        public int DrawTriggerEvents;
        public int DrawJoints;```

chunk a gameobject with that component in a subscene

creates PhysicsDebugDisplayData

[solemn hollow]

Thank you! I havent found it mentioned in the Documentation last time i looked.

[astral parrot]

After a couple attempt while finding the documentation, I got it, Thank You!

[solemn hollow]

After looking at the physics debug im more confused than before. it seems like everything works as expected and i barely have any contacts that register. So my limited understanding of the physics engine is that the buildphysicsworldsystem is the broadphase looking for potential contacts. the Stepphysicssystem (narrowphase) then resolves those contacts. Why is StepPhysicsSystem taking 1.4ms when no contacts are to be resolved? Or does the Collisionfiltering only happen in the StepphysicsSystem so the broadphase is actually finding alot of potential contacts?

[muted field]

so i added this to my job: [BurstCompile]

But when i ran it through profiler the jobs take around 2ms which is identical to what it was doing before i added the attribute, so doesn't seem like its working? I'm using the mathematics library none of the mathf stuff so what am i missing here?

do i need to enable something some where aswell

[solemn hollow]

yes you need to enable burst compilation

jobs->burst->enable compilation

[muted field]

you mean this ?

already got that enabled

[solemn hollow]

yes

check in profiler if the job says its run with burst

[muted field]

not sure where it would say?

its safe to say its not using burst if it takes 2ms for such a small job aswell

[solemn hollow]

it woulde be a greenish color and it would say (burst) behind the jobname

[muted field]

yeh no green to be seen

[solemn hollow]

thats the "burst green"

[muted field]

what can cause burst not to be used even with the attribute

[solemn hollow]

i've never had the case where burst wouldn't work without throwing errors. sry.

where did you add the burstcompile attribute?

[muted field]

    [BurstCompile]
    public struct PolygonPolygonOverlap : IJobFor```

above my struct

[solemn hollow]

do you use rider by chance?

[muted field]

nah vs 2022

[solemn hollow]

hm k. Rider shows when a function is burstcompiled:

[muted field]

oh thats kind've cool

i dont think i have any thing in job that would make it non burst compatible

[solemn hollow]

well if you get any testjob running with burst first then atleast you can see burst is working at all. then it must be sth in your real job that is not compatible

[muted field]

ive had it work on very basic jobs before

but it was very basic

[solemn hollow]

Cant promise i spot the mistake but can you share the code?

[muted field]

sure

https://hatebin.com/zqqljyumls heres the full job

[rotund token]

are you getting warnings in your log

[muted field]

it seems to show my job in the burst inspector if that means anything

[rotund token]

how are you scheduling your job

[muted field]

no warnings

[solemn hollow]

is your polygon struct blittable?

seems like it has a list of Verts inside

[muted field]

im scheduling them like this:

            for (int i = 0; i < _polygons.Length; i++)
            {
                for (int j = 0; j < _polygons.Length; j++)
                {
                    if (i == j) continue;
                    var p1 = _polygons[i];
                    var p2 = _polygons[j];
                    var arr = new NativeArray<bool>(1, Allocator.TempJob);
                    var job = new PolygonPolygonOverlap(p1, p2, arr);
                    var jh = job.ScheduleParallel(p2.Verts.Length, 1, default);
                   

                }
            }

i call complete in my job controller which is just some boiler plate stuff

[muted field]

yeh it has a list of verts in an unsafe list

is that why it wont burst?

[rotund token]

no

[muted field]

i get this in console by the way

[rotund token]

o_O

[muted field]

just appears randomly some time later

[rotund token]

ive never seen that

im pretty sure you've turned on burst timings

which is interesting

(its an option)

[muted field]

yeah i enabled it thinking it might show how long my jobs took using burst if they used it

but i dunno what that timing represents

my polygon struct also has an unsafehashset

could that be non burstable ?

[uncut rover]

I think it the time it took to compile the brust code

[rotund token]

if burst can't compile it will error

it won't just not compile

[muted field]

oh

so it must be compatible then its just choosing not to use burst

[uncut rover]

do you have the burst option enabled in the inspector ?

synchronous compilation ? sometimes it start the play mode with the non burst version because it's not compiled yet.

[muted field]

wtf

this time it did use burst

i didnt even change anything

[rotund token]

burst compiles asychronously

it could take a few frames before it switches over if you don't force synchronous compilation

[solemn hollow]

oh wow i thought it just hangs when burst isnt finished yet

[uncut rover]

it does if you have synchronous compilation enabled

[solemn hollow]

for me its probably the same thing since without burst my game wouldnt run at all 😄

[muted field]

confused why it worked now but not last time

[solemn hollow]

sry to necro my question from before this burst problem but any insight helps me a ton rn

So in the game we play a bunch of zombies which have Colliders. But they are all set to not collide with each other

Would that incur costs in the StepphysicsSys anyways?

The debugger shows no Contacts.

[muted field]

why do you suspect setting them to not collide would incur costs?

[solemn hollow]

Somewhere this CollisionFilter setting has to be checked for Overlaps that happen. I thought it is checked in the BroadPhase (BuildPhysicsSystem) and the not valid collisions are never passed to and processed by the StepPhysicsSystem. So i dont know what my StepPhysicsSystem is doing for 1.4ms when there is no valid overlap it could process

[muted field]

does the deep profiler work for the physics stuff to see what it might be ?

ive not used the new physics tools yet but i imagine the profiler might highlight some info

[solemn hollow]

Let me check if i can get it working now. there currently is a bug with M1 chips that makes the profiler not work because of too much memory usage (normal profiler works after unity restart, deep didnt at all last time i tried)... only fixed in later unity versions i cant use because of entities... so annoying

nope... cant run deep profiler...

[muted field]

wait doesnt entities work on latest LTS 2021.3 now ?

[solemn hollow]

0.51 is out???

[muted field]

oh i thought 0.51 came with the LTS of 2021.3 but turns out its still in progress

[solemn hollow]

atm we are at 0.50.1

[pliant pike]

basic question but when converting GO to Entity is it best to just not use physics shape and physics body and use rigidbody and collider?

they seem to convert the same both ways but physics body is missing some of the options of the rigidbody like freezing axes and making iskinematic

[solemn hollow]

not sure axis freeze is supported by unity physics then even though they convert the old components. the new components do have a kinematic motiontype though.

[rustic rain]

I have a feeling options like freezing axes aren't converted kek

[solemn hollow]

but i have to say the more detailed options for filtering collisions are great in the new components

[pliant pike]

thanks yeah I just noticed they have setting where you can just use it as a a trigger which I presume is the alternative

[whole gyro]

The Physics Body component has a "Motion Type" field that can be set to Kinematic. This is the same as isKinematic on a Rigidbody. There isn't a way to specify axis constraints on a Physics Body, but you can do this with joints. There is an example of this here: https://github.com/Unity-Technologies/EntityComponentSystemSamples/blob/master/PhysicsSamples/Assets/Demos/4. Joints/Scripts/Creators/Joints/LimitDOFJoint.cs

I uses this simplified version in my own game to keep my character upright:

public class LimitDOFJoint : MonoBehaviour
{
    public bool3 LockLinearAxes;
    public bool3 LockAngularAxes;
}

[UpdateAfter(typeof(PhysicsBodyConversionSystem))]
public class LimitDOFJointConversionSystem : GameObjectConversionSystem
{
    protected override void OnUpdate()
    {
        Entities.ForEach(
            (LimitDOFJoint joint) =>
            {
                // Get the destination world entity associated with the authoring GameObject
                Entity entity = GetPrimaryEntity(joint);

                var bodyPair = new PhysicsConstrainedBodyPair(entity, Entity.Null, false);
                var physicsJoint = PhysicsJoint.CreateLimitedDOF(
                    RigidTransform.identity,
                    joint.LockLinearAxes,
                    joint.LockAngularAxes
                );
                World.GetOrCreateSystem<EndJointConversionSystem>().CreateJointEntity(joint, bodyPair, physicsJoint);
            }
        );
    }
}

The usage is similar to the Rigidbody constraints:

[drowsy pagoda]

Is DOTS supported in Editor 2021+ ?

[safe lintel]

entities and packages depending on it arent

[drowsy pagoda]

So recommended to stick only with 2020?

[pliant pike]

Thanks @whole gyro I did eventually find that, I should prob read the docs and look at the samples

[whole gyro]

I don't blame you. I wish things like this were easier to find.

[safe lintel]

yeah, they are intending to release something to make it compatible with 2021 maybe around june(but you know how they are with estimates)

[drowsy pagoda]

lol, unfortunately I do.

thx for the quick reply

[rustic rain]

Any idea whether Unity mentioned when they plan on enable/disable component feature?

[solemn hollow]

entities 1.0...

[rustic rain]

👴

oh man, it's so crucial to my ideas

feels bad man

[solemn hollow]

literally everbody is waiting for it for years now 😄

[safe lintel]

https://forum.unity.com/threads/new-enabled-disabled-state-filtering.902531/#post-8098883

@rustic rain posted 18mins ago

[rustic rain]

huh

well, my use case: enable/disable rendering of entity

Maybe there's any other option to achieve same?

[safe lintel]

you do know about the DisableRendering tag right?

[rustic rain]

🤡

No I don't

I feel so bad, I swear

[tranquil jay]

I hope this comes in 0.51

[shut pewter]

Hey all, I've been wondering, is there something akin to hot reloading for entities etc.. ?
I currently have a fairly long startup time, and it negatively impacts productivity

[rotund token]

the first line of the post literally says 1.0 😆

[low tangle]

Yeah, only 5 more years till 1.0 drops 🙃

finally revive my unity ecs games

[tranquil jay]

Things can change + who reads anything more than the title lol + we are kind of expecting you @rotund token to implement it because you make miracles happen

[rotund token]

You may be tempted to locally flip these methods to public to start playing with this feature in your own projects prior to its official release. I want to advise you in the strongest, most sympathetic terms: please, for your own sake, don't do that.

yeah his warning came too late for me

already played around with this last week

[muted field]

if we have a native array for a struct. can those structs use interfaces or will that mean they are reference types and not allowed for jobs

struggling to understand how to setup my data =/

[molten flame]

WDYM exactly? If you want polymorphism for your structs PhilSA has a codegen solution that is pretty neat

[muted field]

well i have a graph class and need nodes/segments where they have info about the segments and nodes they connect to, on top of that my segment needs to be generic since they take a spline type which governs the curviness of the segment

at most i can restrict the segment generic to struct but not an interface

since my spline type is not an interface

its confusing how i link it all together

[rotund token]

you can have interfaces on structs

and you can avoid boxing by using generics

that said, most of the time this line of thought is misguided for entities/jobs

it's an OOP not DOD mindset

[muted field]

how would you setup a simple graph of nodes/segments in a DOD way ? my brain is so used to the OOP way

i cant use a list of a generic struct for my segments so i dont know how to give it a spline data field

[molten flame]

You wanna think about it in terms of packing data as dense as possible. Its essentially a matrix right.

[muted field]

so the segment should have all the spline data rather than a field to another struct defined as a spline?

[molten flame]

Yeah, thats more like it imo

[muted field]

i guess i could store the end points and end tangents which is what i need to calculate my spline, then calculate the spline when needed rather than store all that data in the segment

[molten flame]

I would set this up as Node tag on entity

• Connection component struct with "to" / "from" Entity references to nodes
• Spline component struct as either buffer of float3 or a reference to some shared data if its a lot of points (but this is advanced for me)

I'm pretty Entity oriented though. A lot of people pack their data into jobs and store it differently for these kinds of structures

[muted field]

this is what i currently have but without the spline data:

        private readonly struct Segment
        {
            private readonly int _nodeA;
            private readonly int _nodeB;

            public Segment(in int nodeA, in int nodeB)
            {
                _nodeA = nodeA;
                _nodeB = nodeB;
            }
            public int Other(int node) => _nodeA == node ? _nodeB : _nodeA;
        }

        private readonly struct Node
        {
            private readonly float2 _position;
            public float2 Position => _position;

            private readonly UnsafeList<Segment> _connections;
            public readonly UnsafeList<Segment> Connections;
        }

i use index in graph array for nodes

in the segment rather than an actual node type to avoid copying

[molten flame]

I think your private readonly UnsafeList<Segment> _connections; connections list there should really be a list of indexes in DOD.

[muted field]

oh good idea

[molten flame]

DOD is sorta like every struct lives in a flat list of contiguous memory and you wanna just index into it

[muted field]

so generally speaking a struct with a struct inside of it is best avoided

[molten flame]

Just like verts and tris in a mesh

[muted field]

except the basic types of course

[molten flame]

well struct with list of struct inside is what you want to avoid

yep

[muted field]

hm only issue here is. if i remove a segment from my graph

all the indices change in the graph's list of segments

so now all my node data is wrong

[molten flame]

This is the big pain with DOD. You need to manage which indexes are free and which are not if your data structure is large.

[muted field]

can i not use pointers directly to the segment instead no matter where in the list some how

something like int *ptr = &_segments[index];

then store ptr

[molten flame]

I think that's probably fine (I have little experience with pointers).
As long as the data is stored contiguously it should cache local when you are looking it up

indexes are just pointers anyway

[muted field]

yeh ive not touched pointers before either but maybe it'll work =/

i'll give it a try and see if it crashes lol

[molten flame]

I'm about at my limit of reliability for this kind of advice XD If I say anymore I'd be guessing and there are some very smart people on this discord that'll be shaking their heads.
I try to use the maintstream Unity sanctioned methods as much as possible because I don't have the C/C++ background to delve too deep into unmanaged memory stuff.

[muted field]

im getting this with just a regular native list =/

[rotund token]

contains requires you to implement IEquatable<U>

you really should look at the source to figure out why you have issues!

public static bool Contains<T, U>(this NativeList<T> list, U value) where T : unmanaged, IEquatable<U>

[muted field]

oh i used the wrong comparer interface 🤦‍♂️

though wouldnt that make my structs reference types if i implement these interfaces

[rotund token]

no?

[muted field]

C# specification specifically defines reference-type as comprising class types, interface types, array types and delegate types.

so that would make my struct a reference type no ?

[rotund token]

yes if you pass something by interface its boxed

[muted field]

oh so if its the type Node then it remains a struct

[rotund token]

where T : unmanaged, IEquatable<U>
if you put a generic constraint unmanaged/struct it will not be boxed

[muted field]

ah i see

ive not seen the unmanaged keyword before - will go read up on it

[rotund token]

tldr:
struct can have reference types on it
unmanaged can not

[safe lintel]

@rotund token did it actually work (enable disable)?

[rotund token]

on my very very very small tiny sample yes

but i was mostly just exploring what was available by writing theoretical code rather than running the actual code

[viral sonnet]

cort_of_unity has blessed us with useful posts! 🙏

[deft stump]

oooooh. so enable -disable is almsot here

[viral sonnet]

VS confuses me so much. At the beginning I could see decompiled source code of entities, then I could only see the signatures, now I don't see anything at all. Go to definition just makes an error sound

[viral sonnet]

I take a break, come back and now it works again. This is ridiculous ... lol

[muted field]

it confuses me how it took them this long to support 64 bit in vs lol

[viral sonnet]

I heard a total rewrite of VS is coming. Not sure about the details but it's way overdue.

[worldly isle]

How do I say I want to foreach all the entities that are missing any of a set of components? For example if I have Component A, B, C, and D

and there is a a component set

ABC
ABCD
ABD
BD

and I have say

Without B, C, D
With A

I would expect only

ABC
ABD

I hope this make sense...

[viral sonnet]

Are you using EntityQuery or Entities.ForEach?

for entity queries, this doc will help: https://docs.unity3d.com/Packages/com.unity.entities@0.0/manual/component_group.html

[astral parrot]

Hi, me wanna ask about the Physics Velocity, when I start my game, at one moment the physics starts slowing down. Even thought I made a system to maintain the Linear velocity by assigning it on job entity batch. What is actually happening? how to solve it?

I used Havok Configuration and set Physics Step to Havok Physics.

[molten flame]

One day I just bit the bullet and bought Rider and now I can't imagine life without it.
For me its the mattress and shoes argument, if you use the bloody thing for 8 hours of your day, every day, then its worth it.

[molten flame]

Post some code

And what do you mean by " at one moment the physics starts slowing down"?
Do you mean that the velocity of the entity decreases?

[astral parrot]

There's nothing wrong with it actually, but the simulation of the physics at some moment is slowing down

Eh I just play the unity again and the physics running normal again...

What...

[molten flame]

🙂 ez fix then

[muted field]

how do you enable full stack ?

console log tells me to but already got full stack error reporting on in the player settings unless it means something else

[solemn hollow]

@muted field Doesnt it say enable full stack traces and disable burst?

[muted field]

all it says is A Native Collection has not been disposed, resulting in a memory leak. Enable Full StackTraces to get more details.

i assume it means in project settings -> player

but i have that set to full stack so unless theres some other location to enable it i dunno how to get the full strack trace

[muted field]

why is yours different to mine

🤔

[solemn hollow]

hmm maybe this only comes with entities? or collections package?

[muted field]

yeh i dont have entities

not available in 2021.3

bit strange leak detection is only for entities tho

[solemn hollow]

sry i cannot help with the setting.
but it shouldnt be too hard to find the array you are not disposing

[muted field]

yeh i think i found it

i had mispelt OnDestroy method so it wasn't disposing when i exited play mode

[solemn hollow]

With the new Debugging stuff that will replace the EntityDebugger I miss the option to find entities by Filtering for specific components. maybe i just havent found it yet?

[void girder]

Can anyone explain why JobHandle.Complete() is blocking for so long when none of the threads are being utilized?

[rotund token]

the main thread is completing the job

[astral parrot]

Hi, me wanna ask, how to lock physics constraints like the same in rigidbody component?

[rustic rain]

there's Unity physics samples with examples on constraints

it's in first pinned message

link that directs to github

How do I differentiate between subscenes?

Let's say I have 2 subscenes

I want to add certain tag to all entities in Subscene 1

and another tag to all entities in Subscene 2

I can see those scene related tags

but I don't get the idea behind what they mean

[pulsar jay]

The SceneTag identifies the scene. Sections are just another separation of the scene in order to stream them

The SceneTag is a SharedComponent so all entities in that scene will reference exactly the same SceneTag

[rustic rain]

huh

hm

any tip on how I can quickly differentiate between them then?

I have 2 entities

I want to know

to which subscene each belongs

[pulsar jay]

depends on what you need from the scene? the name?

[rustic rain]

Some kind of ID

rn I am trying to make a system that will swap my player entity

from scene 1 to scene 2

and vice versa

and all meanwhile

will add DisableRendering tag to all entities in system player leaves

while removing those tags from entities of system to which player goes

[pulsar jay]

I guess you would have to change the sceneTag and sceneSection on the player then

[rustic rain]

Yeah, I get that part

but first I also need to somehow know to which I should change it

[pulsar jay]

maybe you could use the SceneEntity referenced in the SceneTag to add some kind of ActiveSceneTag to it?

[astral parrot]

Ah ok, lemme check it out, TQ

[pulsar jay]

then you could use EntityManager.GetAllUniqueSharedComponentData<SceneTag> to get all scenes and check their referenced entities if they are the active one

then you can just remove all the DisableRenderingTags on the active one and add to the other one

[rustic rain]

ok, first I should begin with simply disabling rendering on all entities from X scene

[pulsar jay]

should be easy to get the scene the player is in. Just query for your PlayerTag and SceneTag

[rustic rain]

yeah

but rn it's more of question

how to query smth that is not hardcoded

Maybe you know how to do it?
rn I have 2 buttons
I simply want to query with button 1 through one scene
and with button 2 another scene

I just need an example, hopefully I'll catch on everything else myself

kek

            List<SceneTag> sceneTags = new List<SceneTag>();
            World.EntityManager.GetAllUniqueSharedComponentData<SceneTag>(sceneTags);         

Here I have my list of sceneTags in a list

I want to query only through entities of SceneTag in index 0 of list

[rotund token]

yeah so there's really 2 parts to subscenes

each subscene can actually be broken into a bunch of subscenesections

and each section can be loaded/closed separately

if you look at RequestSceneLoaded this is actually applied to the subsections not the actual subscene entity

but in general you will also only have 1 subsection unless you've setup more

[rustic rain]

What would be required appraoch if I want dynamically created subscene/sections?

For those "rooms" I have been talking about

[rotund token]

well technically if you're talking runtime that really doesn't make sense

since subscenes are pre converted chunks of data

it sounds like you more want to partition your world into separate rooms?

[rustic rain]

well yeah

each planet system = each room

player directly can only intereact with one he exists in

but player can also travel to others

I guess my solution would be to pre-create all systems

AT least in that case I can make them beautiful kek

[rotund token]

well i guess the first thing to know is are these planets created in the editor and baked in a subscene

or created at runtime dynamically/by the player

[rustic rain]

I could use a bit of both

for example

Solar system, with planets like earth, mars and etc should be exactly same through every playthrough

while some fictional systems

can be randomly generated

[rotund token]

i would probably just define my own 'Room' shared component

and use that

make each subscene define a new room component

and then you can also create rooms at runtime

[rustic rain]

how do I query through individual rooms though?

let's say rn

I have 2 subscenes

[rotund token]

this.query.SetSharedFilter(new Room {ID = 1});

[rustic rain]

oh

[rotund token]

will only return entities from room 1

[rustic rain]

huh

so that requires me to define query

ok

[rotund token]

alternatively different worlds (some complexities here if you want rooms to interact)

or just simply poll it on the entity

or keep a list of every entity in each room in a buffer

theres a few ideas

[rustic rain]

no, should be only one world

so I don't have to invent information bridges between them

SharedComponent seems like enough, for now

[rotund token]

i agree if they need to a communicate that's a huge pain

[rustic rain]

I just need to learn more about it

        private void DisableRendering(int ind)
        {
            var em = World.EntityManager;
            var query = new EntityQuery();

            List<SceneTag> sceneTags = new List<SceneTag>();
            em.GetAllUniqueSharedComponentData<SceneTag>(sceneTags);


            Entities.SetSharedComponentFilterOnQuery(sceneTags[ind], query).WithStructuralChanges()
                .WithNone<DisableRendering>().ForEach((Entity e) => { em.AddComponentData(e, new DisableRendering()); })
                .Run();
            Entities.SetSharedComponentFilterOnQuery(sceneTags[ind], query).WithStructuralChanges()
                .WithAll<DisableRendering>().ForEach((Entity e) => { em.RemoveComponent<DisableRendering>(e); }).Run();
        }

For now I have this idea

I'll try it rn

hmm, doesn't seem to work

ooor

oh wait, me dum dum

I don't think it works

I think my query options are faulty

WithSharedComponentFilter(sceneTags[add])
This works
Buuuuut
Some entities are unaffected

[muted field]

for parallel jobs is there way to give each index in the execute function its own native collection so not to interfere with another ? i need each one to keep track of where they came from like a pathfinder so i need to write to a hashset as i go

[rustic rain]

huh

[rotund token]

GetAllUniqueSharedComponentData