archived-dots

[balmy thistle]

touched on a little here: https://forum.unity.com/threads/exciting-developments-in-upcoming-entities-1-0-releases.1341071/

[rotund token]

yeah that's the one

if you really don't like it from what i've seen baking basically has the option to choose your transform components now with the TransformUsageFlags

and you could replace it with your own

[balmy thistle]

Yes, that's the idea.

[robust scaffold]

Hrm, not much appearing from google or a source dive. Any examples of TransformUsageFlags?

[rotund token]

oh just open the source

its too well documented for me to post it here

[robust scaffold]

Oh, found it. Hrm. Gonna see what I can do with this. Seems flexable.

Also, does anyone know how to lock the view mode of the inspector to the entity runtime version when clicking on converted entities in the entities hierarchy?

[mortal ether]

Yeah, the baking preview is on its way out. We're no longer maintaining it. It gets to stick around until we have a good UX in the Entity inspector for GameObjects that generate additional entities. After that, it will be removed.

[late mural]

wondering if there are any graphs, or things that compare the performance of the particle system (gpu mesh mode) to entities? Tryna work out which is faster, and although the general consensus is that the particle system is faster, it would be nice to some data, like a graph or something

[robust scaffold]

Does anyone know what these two components are? They are giant and I dont have any transform components on this entity.

[mortal ether]

We're actually working on that as we speak. DataModes will either be chosen automatically based on context or locked to what you chose from the UI.

[robust scaffold]

Good to hear, it's really annoying right now.

[mortal ether]

Yep. So is the 3-way toggle in play mode. We are making it a drop-down.

[robust scaffold]

Hrm, bug or not? This flag is not actually used. Instead, the transform creation baker queries for None or ManualOverride to determine if L2W matrix should be added to the entity.

[rotund token]

From what I understand the new transform system is very much in it's infancy, i expect a lot of features are either missing or will be fleshed out.

very few people are likely to be using it due to physics (and netcode) not working with it yet

[robust scaffold]

True. What I really personally want is for unity to reduce the LocalToWorldTransform name size. It's twice as large as all my component names. They did good with cutting ComponentDataFromEntity to ComponentLookup. L2WT needs the same treatment.

[rotund token]

well when we get c# 10 you can just do something like
global using L2WT = Unity.Transforms.LocalToWorldTransform;
if you really want...

[robust scaffold]

10? We're just breaking into C# 9 features. I dont want to even think of what 10 would bring. Makes me sad.

We'll sooner see tiny get revived from the dead than C# 10.

[wraith hinge]

a) I disagree and b) do you not have tab completion?

[robust scaffold]

I do. I also have vertical code alignment. The size of L2WT makes the following component type handles have a lot of white space.

[wraith hinge]

true

[robust scaffold]

CDFE also had that problem but segregating it via new line was fine as there was often a lot of CDFE being used within the same job. ComponentLookup is only 2 characters longer than ComponentType so now it can be in the same group.

Hrm, is there any way to order the baking of GOs? I need a baker to run before another baker does so. Trying to roll my own companion GO system.

[rotund token]

think you're probably meant to utilize baking systems if you need ordering

there are 4? groups you can assign to as well if you need to inject in a specific point

[robust scaffold]

The baking systems just seem like stock systems that run during the baking world. Do I just query every GO that need a companion GO over and over again? Rolling my own incremental baking is gonna be pain.

[rotund token]

once you get to baking systems i don't think your authoring data exists anymore

you need to have passed it on via components

you can have baking specific components though

via
[BakingType]
[TemporaryBakingType]

[robust scaffold]

Hrm, so make an intermediate managed component containing copies of the monobehaviors... huh. TemporaryBakingType?

[rotund token]

    /// Strips the component at the end of baking process. As it is removed after a single baking run, it will not be present
    /// in subsequent baking runs unless it is (re-)added by a Baker.
    /// This also means that the component doesn't show up at runtime.
    /// </summary>
    public class TemporaryBakingTypeAttribute : Attribute
    {
    }

    /// <summary>
    /// Automatically adds the component to each entity that the baking process creates.
    /// The component is stripped out automatically at runtime.
    /// </summary>
    public class BakingTypeAttribute : Attribute
    {
    }```

ideally all work is done in bakers but sometimes you might need to do extra stuff (or you want to do a heavy load and burst it in the sytems)
this way you can pass data from bakers to baking systems and it'll be removed for you when done

[robust scaffold]

Interesting. Temporary seems like the incremental whereas the basic baking type is added every time baker runs.

Alright, lets see if I can make this work... tomorrow. Thanks for the help. 1.0 is clearly very experimental but an exciting new world.

[brave field]

Hybrid interop

[clear radish]

anyone else have issues with latest entities + physics 1.0 giving error for 'LocalToWorldTransform'?

[rotund token]

LocalToWorldTransform should not be usable if you have physics enabled

[clear radish]

right, just saw in a post, thanks

[rotund token]

physics/netcode do not support the latest transform system so force enable the old V1

[clear radish]

so everything back to Translation

[safe lintel]

anyone have an idea of what BakingType would typically be used for? sometimes struggle to think of uses for some of the features available

[rotund token]

i'm still not 100% certain of the use for BakingType vs TemporaryBakingType

but i've been using TemporaryBakingType a bit

[safe lintel]

yeah same

but bakingtype, data that persists between bakes but not during runtime. not like the user can modify the data post bake right(thinking of level design purposes)?

[rustic rain]

You can use baking type to add some child transform component. As it doesn't get added during baking system update

[devout prairie]

Curious how the new baking system interacts with physics prefabs for example currently my conversion has to do additional initialization steps later as physics entities ( joint conversion creates additional entities containing Joint components ) etc don't exist and can't be referred to inside the IConvertGameObjectToEntity mono's..

Anybody looked at this at all?

[rotund token]

physics currently updates mostly in baking systems

it creates passes temp data in bakers for the systems

[devout prairie]

any idea if it is possible to access those joint entities within the baker?

[rotund token]

you should consider baker isolated

[rustic rain]

think of baker as Designer who designs authoring entities

past Baker you can access anything in BakingSystem

only within ECS sadly

[devout prairie]

ah i see that's interesting

so it should then be possible to access the additional entities created by joints, inside a BakingSystem

[rustic rain]

inside BakingSystem you literally have SystemBase

and world

all your systems will run once

same rules as runtime

[devout prairie]

ah right ok

one example is accessing Constraints, the default conversion values aren't perfect so i do additional tweaking of those once i spawn my prefabs ( because they are not accessible during conversion ).. so if i could avoid that kind of stuff it would help simplify things

[rustic rain]

you pretty much have 2 phases for tweaks
Baker that can only access entity mapped to authoring object and additional entities you create
And BakingSystems that just do whatever they want in entities world without any access to authoring objects

Biggest annoyance to me here

is that you are literally forced to create additional types

just for baking

[devout prairie]

mmm

so can those 'bakingsystems that just do whatever' access and alter Prefab hierarchies that have previously been converted by the first phase?

[rustic rain]

you can do jobs here, kek

if you want

it's literally normal World

that only updates once

that's about it

[devout prairie]

cos i'm guessing phase 1 baking will generate the Prefab entity hierarchy, which would include LinkedEntityGroups, Joint entities, and all the stuff that isn't generally accessible during conversion

[rustic rain]

ugh

yeah

I wouldn't be so sure about that

Child buffers are not created

so

for my baking I implement my own buffer

BakedChild

[devout prairie]

you mean ever because they've been removed or specifically during conversion?

[rustic rain]

and will add to it all entities of game objects that are children

in GO hierarchy

[rustic rain]

I think they are simply not added

by the time my baking systems run

and I wasn't able to find a way

to update when those buffers are created

it's irrelevant anyway

the way I see it, it's way too simple to create such buffers yourself

[devout prairie]

yeah that sounds like exactly the kind of workarounds i'm currently doing for physics

[rustic rain]

by doing Baker<Transform>

[devout prairie]

yeah i mean it's simple enough to iterate the transforms of the hierarchy during conversion currently anyway, i'm assuming baker is the same

problem is i guess just those out of reach components and entities, that are generated later and not accessible during conversion

[rustic rain]

what is it you want to access?

[rotund token]

the order of baking is

PreprocessBake

• PreBakingSystemGroup

Bakers

• BakingSystem.Bake

PostprocessBake

• TransformBakingSystemGroup
• BakingSystemGroup
• BakingSystem.UpdateReferencedEntities();
• LinkedEntityGroupBaking
• BakingCompanionComponentSystem
• PostBakingSystemGroup
• BakingStripSystem

[devout prairie]

i really think that if unity is to achieve it's aims with dots, conversion (baking/whatever) really needs to be simple/linear/not-convoluted.. i think not every dev is going to have the patience to do complex multi-stage setups just to get basic hierarchys converted over

[rustic rain]

yeah, it sucks

[devout prairie]

thanks

[rustic rain]

but whatever, it is what it is

doubt it will change

so

better get used to it

[devout prairie]

haha yeahhh

tbh, if you're feeling like it's messy and it sucks, and you're a capable dev well versed in the kind of juggling that dots involved, i think there will be a lot of less patient/technical devs that just give up

if it's too difficult, it's a high entry barrier to dots sadly

[rotund token]

on the other hand, i think most normal devs won't be doing such weird things

[devout prairie]

the ironic thing though, to me, is that ecs and systems are actually pretty straightforward, conversion is the headache part

[rustic rain]

I'd say the biggest trouble with baking - people were too used to conversion

so they try to apply the same rules while migrating

conversion was OOP and baking is ECS, same trouble of migration xD

[rotund token]

my only complaint atm is my inability to create entities in baking systems

or maybe i've just missed something

[rustic rain]

you can't?

[devout prairie]

doesn't it have the create additional entities thing

[rustic rain]

no

[rotund token]

it's an ISystem

it just says entity not assigned to an authoring component and will be ignored or something like that

[rustic rain]

or SystemBase

hmm

have you tried BakingSystem

[devout prairie]

ah i think i read you complain about that

so it needs a go ref

[rustic rain]

to inherit from?

[rotund token]

i basically just wanted to store some meta data per subscene

i in the end just created a new authoring type and set it up on that

but it's annoying i have to manually add this to all subscenes

instead of automating it

again, i could have missed a way to do this i didn't look that deeply

but nothing was obvious to me

[devout prairie]

i have a feeling they might address that

[rustic rain]

hmm

I wonder

if you can do it

with

Baker<SubScene>

🤔

[rotund token]

i did consider attaching it to some subscene entity

[devout prairie]

is moving conversion from oop to ecs an unnecessary headache

can't we just have all the benefit of oop for conversion which is a one-time thing anyway

[rustic rain]

pretty sure they did it

because conversion wasn't doing too well with live conversion

[devout prairie]

mm

imo all that live conversion shit was just another layer of additional headache

i mean i know it's nice etc to have that but damn

[rustic rain]

well, I do like the idea of it

and if it works

then fine, my heart with accept it xD

[devout prairie]

wouldn't it have been simpler just to have subscene as a container holding a bunch of GO's that are converted either when you hit CONVERT or on running the game

(in the editor)

[rustic rain]

ain't that's exactly how it meant to be?

[devout prairie]

just simple, without all the bugs/mess

[rustic rain]

you either close subscene (convert offline)

[devout prairie]

well currently subscenes are live, and buggy as all hell in my experience

[rustic rain]

or start with open (convert online)

[devout prairie]

for me the damn buttons were just vanishing

[rustic rain]

UI is broken

yeah

I can't even deal with it, so I wait for new updates

[devout prairie]

well this was with 0.5/0.51 back in unity 2020

and subscenes have been around a lot longer than that

i hated it right off the bat tbh, just added a whole other layer of complexity/fickleness/bugs

the best way to have a rocksolid pipeline, is to have a rocksolid pipeline

the more i think about it, the more i think why move conversion over to ecs

getting assets in to dots should be the easy part

not essentially a bottleneck to entry, which is what it is ( pre 1.0 and from what i gather just as much in 1.0 )

i think having the option for much faster conversion of very large scenes and assets should be an optional stage

i do like the concept of Baker and BakingSystem, i think it unifies the whole previous toolset, which was very messy, into one ecosystem.. but it has to be easy to do conversion of typical game asset setups

if it makes it harder and more convoluted, 🤷‍♂️

[brave field]

🥲 Simple test project still can get this subscene error

[rotund token]

clear the entity cache after you fix any compile errors

[brave field]

For 1.0, where's clear the entity cache button located at? Can't find it lol

[rotund token]

preferences -> entities

[brave field]

👀 Need more bottom tabs at 1.0

[hot basin]

How to make a raycast in physics 1.0 in SystemBase?

[rotund token]

haha yeah thats what mine looks like

at least i have an ultrawide so i have 2 groups next to each other

[hot basin]

previously I just get CollisionWorld from .GetExistingSystem<Unity.Physics.Systems.BuildPhysicsWorld>();

[rotund token]

physicsworld.raycast

oh

var physicsWorld = SystemAPI.GetSingleton<PhysicsWorldSingleton>().PhysicsWorld;

[proud jackal]

You were too quick tertle I was about to type it 😆

[hot basin]

thanks!

[rotund token]

Copy paste trumps typing!

[hot basin]

upgrading 0.51 -> 1.0exp is tedious

[rotund token]

i found it pretty fine until i hit netcode

[hot basin]

what about authoring?

[rotund token]

converting IConvert to Baker was basically a copy paste and a new class

serialized data was maintained

i thankfully didn't have many generate authorings

those would be tedious

[hot basin]

oh yeah I had bunch of [GenerateAuthoringComponent]

[rotund token]

yeah i had i think 5 of 14 libraries

and most all were tag components

[hot basin]

now I'm replacing ECBs

[rotund token]

i just did a find / replace on the field/getexistingsystem/addhandleforproducer

and deleted

then did a find/replace on the create and switched it to systemapi

one of the perks of having very strict coding and naming style

[hot basin]

do you still cache something?

i.e. singleton of ecb system

[rotund token]

nup

i trust dani and his code gen that this is going to be fast enough

(I'd prefer to keep it clean until I have a an issue with main thread costs growing)

[brave field]

A lot of breaking changes?

[rotund token]

big change to how systems are put in different worlds

and they made a bunch of changes to system groups and stuff and i had a lot of work arounds for previous quirks which just aren't needed anymore

so i've been going through and cleaning a lot of app management up

[proud jackal]

Hehe, how'd you know it was me that did the codegen for that :3

[pulsar jay]

Do I understand correctly that companion objects wont be a thing anymore with 1.0?

[rotund token]

as far as i'm aware they still exist

[full epoch]

In systembase systems we had Enabled property to enable/disable systems - is there something similar for ISystem systems?

[rotund token]

SystemState.Enabled

for the most part, under the hood systembase actually just uses the same SystemState that is passed into ISystem

[full epoch]

thx

[rotund token]

just to show what i mean, this is SystemBases Enabled

public bool Enabled { get => CheckedState()->Enabled; set => CheckedState()->Enabled = value; }

        {
            var state = m_StatePtr;
            if (state == null)
            {
                throw new InvalidOperationException("system state is not initialized or has already been destroyed");
            }
            return state;
        }```

[hot basin]

oh yeah forgot that if my authoring was change I need to remake everything from scratch

[hot basin]

are class/managed components removed entirely?

nvm I think I need to use AddComponentObject in Baker

[devout prairie]

Here's a not exactly relevant question for you all but i'm curious: Laptop or Desktop?

[remote crater]

Is this possible: Spawn an entity from entity then change mesh skin and or color? I think .5 or .51 allow it now right?

Good morning all. I think this is the day I launch my first version of Starfighter General that I can confidently say is stupid fun with building potential.

The reason I want color swapped guys is that I can make different colors of same enemy and call em different types of enemy: Red Dragon,Gold Dragon, Fuchsia Dragon,etc

[hot basin]

@remote crater URPMaterialPropertyBaseColor

[remote crater]

I have it so the enemy fights, so changing the color can also change the personality, attack and even trash talk as it hails your communication channels.

[remote crater]

I am using HDRP so there is an equivalent? That's cool!

[hot basin]

HDRPMaterialPropertyBaseColor? 😄

[remote crater]

So color is changeable! Awesome!

Is skin material changeable?

[hot basin]

check samples for HDRP

[remote crater]

yayah ty Kra

[hot basin]

AFAIK both pipelines can have custom shader properties overrides

so you can override everything you want

[remote crater]

Old pre .5 dots if you changed one, you changed all entities.

I think in .5 if you clone an entity. Entity cloneEntity = oldEntity;

I think in .5 it got decoupled.Well I can just try it out! TYTY

[hot basin]

https://docs.unity3d.com/Packages/com.unity.entities.graphics@1.0/manual/material-overrides-code.html

[remote crater]

WOOO! God bless ya Krajca! Awesome way to start the day. Have a good one all younz.

Holy crud! Anyone scroll down?

You can animate your material to change properties on the fly

This means you can have not just a red,blue or green dragon, but one that cycles colors!

Johnny from TurboMakes Games did this back in the day and it was impressive: https://www.youtube.com/watch?v=XMRSNlTYHFY

Good Stuff Gustov

[hot basin]

For some reason I can't add ICleanupComponentData to my entity

public struct OnCreate : ICleanupComponentData
    {
    }
public class OnCreateAuthoring : UnityEngine.MonoBehaviour
    {
    }
    
    public class OnCreateBaker : Baker<OnCreateAuthoring>
    {
        public override void Bake(OnCreateAuthoring authoring)
        {
            AddComponent<OnCreate>();
        }
    }

[proud jackal]

Interesting, how are you adding it? Just the classic entityManager/ecb.AddComponent<SomeCleanUpData>() or?

Oh gotcha!.. Hmm, that totally should work o.o

What error are you getting?

[hot basin]

It just don't get added

[proud jackal]

Does it not show in the editor or? I'm assuming you put OnCreateAuthoring on an entity in your subscene

[hot basin]

yeah, it's on the object in the subscene

[rustic rain]

I would guess, such static queries of components don't create any impact on sync points?

[proud jackal]

Awesome, could you then check what happens if you press this?

[proud jackal]

As that should show you the baking result aka the baked entity

Oh that's very interesting O.O

[hot basin]

UIComponent is managed component added by AddComponentObject() in it's own baking class

ok

I changed ICleanupComponentData to IComponentData and it's working

[rustic rain]

hmmm

I wonder if Unity aims towards keeping Game Objects inside SubScenes

considering currently World loads before Scene

[viral sonnet]

i think they expect us to create entities in bakers, put data on them (bakingTypes) and then process in systems. it's convoluted though.

[robust scaffold]

What's the difference between a baking type and a temporary baking type

[harsh owl]

is this valid?
NativeArray<float3> Vertices = new NativeArray<Vector3>(MapMetadataAndRaycaster.vertices, Allocator.TempJob).Reinterpret<float3>();
Can I just dispose Vertices later? Or do I need to keep a reference to the original Vector3 NativeArray to dispose of it instead?

[proud jackal]

Just got the heads-up that ICleanupComponents are specifically not serialized so that's why 🤷‍♀️

[viral sonnet]

https://forum.unity.com/threads/advanced-baking-pain-points.1342394/#post-8479301

TemporaryBakingType removed after one bake. BakingType will stay on the entity (in baking world)

this is how I understood it. i never used BakingType, temp was enough for what i wanted to do

[hot basin]

thanks! any info why that is?

[proud jackal]

Indeed I have!
ICleanupComponents are intended to clean up state created by a system.
As a result, we don't want it serialized, therefore we can ensure you definitely added the component at runtime!

[rustic rain]

Any idea what happens when you try to remove Entity with cleanup component? And only it

[viral sonnet]

I personally don't have any stake in this topic. However, you are probably aware that this was requested quite a few times now either here or in the forums as a wanted feature, to reduce a structural change on every instantiate. Previously this was with ISystemStateComponentData, now with ICleanupComponent. The choice is odd in that sense because it clearly signals that the prefab has/needs a cleanup job and needs setup. Additionaly, I'm not sure why ICleanup is not an enableable component.

[rustic rain]

I wonder how much overhead it creates over doing em.RemoveComponents(e, lots of types);

[wraith hinge]

my understanding is that cleanup components are just renamed system state components, and are for cleaning up after systems, not components

what's an example of a prefab that needs to be cleaned up, and when does that cleanup need to happen?

[rustic rain]

that's not really for prefab actually
I want this to make some logic, that clears entity of all data except of one on cleanupcomp when you try to remove it
It's more about removing a lot of components without knowing what components to remove

related to limitation of ComponentTypes capacity

[wraith hinge]

to zoom out, what are you trying to accomplish overall? what makes you need to remove components without knowign what they are?

i'm also surprised because baking usually involves adding components rather than removing them

[rustic rain]

for example
I have input entity, that gets all sorts of components attached whenever certain input happens. And that needs to be cleaned at the end of frame.
So currently I simply store archetype and change archetype
But that makes impossible to attach more cleanup components, unless you do some prep work

[wraith hinge]

ehm. but we said that structural changes are bad. why would you add components on input that you know you will immediately want to remove, rather than just writing to some existing components?

[rustic rain]

that's to support modding
I do have other option in mind for that. But I just want to know

whether killing Entity is viable strategy to just clear it of all components except for CleanUp ones

[wraith hinge]

i'm afraid i don't see how modding is related; what would modders add?

[rustic rain]

new callbacks that add component tags to input entity

for example modder decided that there's a new bind for throwing a boot.
So whenever key is pressed - tag BootThrownTag is added to it

[wraith hinge]

so like the modder defines a new component?

and they add an assembly that they build themselves, or something?

let's make a thread

[whole gyro]

Is entity picking in the scene view supposed to work with entities that were converted from prefabs? When I try to click on an entity spawned from a prefab, it opens the inspector but it is missing the little circle to switch the data mode in the top right. And when I click on the entity a second time it outputs an error:
GetAllOverlapping failed, could not ignore game object 'Cube (UnityEngine.GameObject) (0)' when picking

I made a little test scene to show what I'm talking about. The sphere is a normal game object in the subscene. In play mode, I can click on the sphere in the scene view and the inspector shows the little data mode circle in the top right. The cubes are created from a spawner game object in the subscene. The spawner baker simply fetches a cube prefab using GetEntity and puts it in an IComponentData. Then in the first frame at runtime, the spawner spawns 10 cubes from the entity prefab. Clicking on the cube appears to open the inspector for the prefab asset, not the entity that I clicked on. There is also no data mode circle in the top right to click. You can also see the error when I try to click on a cube a second time.

I'm wondering if this is happening for other people and if this is a bug or not. I assume the error is a bug, but what is the expected behavior when clicking on an entity that was instantiated from a prefab?

[viral sonnet]

I hope before 1.0 releases the entities team can take another look at LinkedEntityGroup. I have a bunch of problems with it. a) this data shouldn't even be in chunks and have core support like enable comps b) it should not exist on flat entities that don't even have a child. c) when a) doesn't work out, at least it should have an InternalBufferCapacity of 0 to not be inlined in chunk. d) it should not have a default cap of 8

[robust scaffold]

Welp, companion game objects and the new transform components and transform usage flags do not play well together

[viral sonnet]

you can still use companion links? 🧐

[robust scaffold]

Trying to do this with other GO components (physics2d components). I need to disable the existing Entity -> Companion GO transform system and reverse it to GO -> Entity.

Setting transform usage flags to manual override with a companion GO throws error on baking. I think they're ignorable errors though.

Damn, doesnt work. Shame

[viral sonnet]

wouldn't the white list get wiped when you run the game?

[robust scaffold]

This is just for baking. I'm trying to expand the allowable list of component types that can be attached to the companion game object on conversion

It worked with the GOCS but not the baker variants. Because GOCMS doesnt exist when bakers run.

[viral sonnet]

i'll go back to the initial question. you can still use companion links? 😄 from what i saw it's all sealed off and unusable, code is there but that's it

not even talking about the white lists

but that's a seperate problem

[robust scaffold]

Yea, it's still there and hasnt changed from 0.50. From what I can see.

Just all the hooks for conversion are from the conversion systems and not baking. I have no clue how pre-whitelisted components like sprite renderer gets registered

[viral sonnet]

huh, CompanionLink is private. Add HybridObject is gone. it vanished from the docs in 0.51. how do you set this up?

[robust scaffold]

It's been merged with AddComponentObject

[viral sonnet]

oh, i'm using AddComponentObject with a Transform. never seen a CompanionLink

[robust scaffold]

CompanionComponentSupportedTypes are the types that spawn a companion GO

[rustic rain]

you mean 1.0 hasn't changed since 0.50 for companion links?

[robust scaffold]

Does that work? My attempts at adding monobehaviors that are not on that list results in null components

[viral sonnet]

yes, Transform work

the list has no SkinnedMeshRenderer. teh fk

but it has a MeshRenderer

maybe that will help you?

[robust scaffold]

Oh my god, yes. Where's that found?

[viral sonnet]

BakingCompanionComponentSystem.cs line 180

[robust scaffold]

Also Systembase got a direct property of "WorldRewindableAllocator". No longer need to access the World.UpdateAllocator

Hahahaha, unity that wont stop me

[viral sonnet]

haha

there's also internal static void BakeGameObjects(World conversionWorld, GameObject[] rootGameObjects, BakingSettings settings) { using (s_BakeGameObjects.Auto()) { var bakingSystem = conversionWorld.GetOrCreateSystemManaged<BakingSystem>(); bakingSystem.PrepareForBaking(settings, default); PreprocessBake(conversionWorld, settings, bakingSystem); bakingSystem.Bake(default, rootGameObjects); PostprocessBake(conversionWorld, settings, bakingSystem); } } baking at runtime? 😄

[viral sonnet]

no idea why that is internal if that's the only thing that's needed to register new components for companion links

[rotund token]

Because you're not meant to add new ones 😅

[rustic rain]

I don't understand why though

such an important feature

[viral sonnet]

dani is already rewriting it to a private method 😄

yeah, why is that? unity can't possibly support all MBs that devs need. white listing is a nice method to keep it flexible

[robust scaffold]

Practically intended by Unity. As we all know, internal is just public with more work.

Hahahahaha. Thanks Enzi, it works.

Just gotta yank those internal methods out into the light of public. Like all good unity functions.

[proud jackal]

https://tenor.com/view/rip-dead-ded-died-dies-gif-17396570

[whole gyro]

What is a companion link exactly?

[robust scaffold]

A very rudimentary and kinda broken hybrid dots

[whole gyro]

Does it keep the originating game object alive or something?

[robust scaffold]

No, it spawns a copy, hence the (clone) (clone) (clone)

[whole gyro]

Got it, so you have a gameobject in a subscene with a companion baker. This converts to an entity with the managed component pointing to the monobehaviour. This monobehaviour exists on a cloned version of the gameobject before the bake. Is that right?

[robust scaffold]

Yes. And only specific MBs can be added to the cloned version. Unless you yank this specific internal function using assembly ref hacks.

Camera conversion for example uses this method. So does sprite renderer conversion.

[whole gyro]

When does the game object get cloned? Is it during the bake or at runtime?

[robust scaffold]

At bake / inside the editor.

[whole gyro]

Interesting. Is it hidden in the hierarchy then?

[quick gazelle]

I haven t had a question in weeks since

[rustic rain]

yeah

[robust scaffold]

Yep:

[rustic rain]

It's a cool thing

gameobjects only exist with entity

entity removed - GO removed

[robust scaffold]

It definitely feels like a stop gap functionality. But it's integrated very deeply into Entities so I prefer to use it instead of rolling my own.

If the transform usage flag is set to manual override and there exists a companion GO, the companion transform sync system continuously throws errors about how there doesnt exist a local to world matrix which is annoying.

[rustic rain]

Just use old one?

new transform is just uugh yet

[robust scaffold]

No no, I dont want the L2W to exist.

[rustic rain]

very early into development I think

tbh, I'd rather them have 1 component

like

[robust scaffold]

What I dont want is the CGOTS to exist as well. But the query seems to look for the existance of a companion link and not the subsequent required components

[rustic rain]

LocalToWorld, but with tons of properties which allow assigning values to specifics

[robust scaffold]

Nah, the current one is nice and packed. They should just have a function within the L2WT that generates a 4x4 matrix on demand, instead of having a separate 16 float wide component.

[rustic rain]

why not just have 1 16 float wide component then?

after all

that's pretty much how big it will be with non uniform scale

[robust scaffold]

that waste 8 floats when you can fit the entire transform into a component half the size.

[rustic rain]

hold up

position = 3
scale = 3
rotation = 4
10

right

ok

math is hard 😅

anyways

[robust scaffold]

and pulling eulerian rotation values are really painful for a 4x4

[rustic rain]

I wouldn't consider size a problem anyway

they have capped chunk size to 128

so

rip small archetypes perfomance

[robust scaffold]

Every byte counts in the end.

[rustic rain]

not sure about that

one thing - you read already allocated memory

the other thing - you allocate memory on stack

every time you need to get 4x4 matrix

with such cap perfomance benefit is questionable

[whole gyro]

I do wish there were some better hybrid options in 1.0. Let’s say we want an entity to have a monobehaviour attached as a managed component. It seems like our options are:
A) From a monobehaviour in a scene, at runtime, instantiate a new entity and add the mono as a managed component to the entity.
B) In a subscene, have entity with an authoring script referencing a game object prefab. Create a baker that stores a reference to a game object prefab on the entity. In a system, at runtime, instantiate the game object prefab and then add the mono as a managed component to the entity.
C) Some version of option B, but done at bake time and extra work to ensure the game objects are cleaned up and recreated during a re-bake.
D) Use assembly ref hacks to add monobehaviour types to the companion link whitelist. This is basically option C, but implemented by unity.

Am I missing another option? I've been trying to figure out the best way to proceed with hybrid stuff. Currently, I'm doing option A, but it feels like I basically recreated runtime conversion.

[frosty siren]

I'm now trying to migrate my project from 0.17 to 0.51 and in build guide https://docs.unity3d.com/Packages/com.unity.entities@0.51/manual/ecs_building_projects.html there is a requirement to install entities platform package wich is hidden and i can't find it's name. Anyone knows it's name or list of dots related packages?

[wraith hinge]

probably com.unity.platforms, guessing same version as entities

[whole gyro]

Still hoping to get an answer to this. Is anyone else seeing the same thing?

[wraith hinge]

i know there are fixes for picking in general coming

dunno about whether that exact bug is fixed or not

[whole gyro]

Got it, thanks. Mainly wondering if it's something else in my project. I guess I should create a new entity project to test. Should be reproducible in any of the ECS samples with spawners.

[rotund token]

with the release of 1.0, any idea if we'll see a entities usable on a wider range of unity versions (2023+) or will it still likely be tied to LTS for a while?
I ask because Localization seems to be getting support for UI Elements in 2023, and while I have my own quickly hacked together solution I'd prefer not to invest time into something that is already obsolete

[wraith hinge]

great question. i have no idea. i would think there would be some attempt to get the maintenance stream (which will be 1.0) to work on later versions at some point, but i have no idea of the cadence, and it would almost certainly after 1.0 was alllllll the way out. it probably depends on resource allocations and stuff

[rotund token]

oh boy what have i broken here =S

System.Collections.Generic.Dictionary`2[TKey,TValue].FindEntry (TKey key) (at <7ab397abd13b41e3ad74fc63bc0bd4a1>:0)
System.Collections.Generic.Dictionary`2[TKey,TValue].TryGetValue (TKey key, TValue& value) (at <7ab397abd13b41e3ad74fc63bc0bd4a1>:0)
Unity.Properties.TypeUtility.GetTypeConstructor (System.Type type) (at <d4bd05a1303843099419718ac603eb57>:0)
Unity.Properties.TypeUtility.Instantiate[T] (System.Type derivedType) (at <d4bd05a1303843099419718ac603eb57>:0)
Unity.Serialization.DefaultTypeConstruction.ConstructFromSerializedType[TValue] (TValue& value, System.Type type, Unity.Serialization.ISerializedTypeProvider provider) (at Library/PackageCache/com.unity.serialization@2.0.0-exp.11/Runtime/Unity.Serialization/Utility/DefaultTypeConstruction.cs:79)
Unity.Serialization.DefaultTypeConstruction.Construct[TValue] (TValue& value, Unity.Serialization.ISerializedTypeProvider provider) (at Library/PackageCache/com.unity.serialization@2.0.0-exp.11/Runtime/Unity.Serialization/Utility/DefaultTypeConstruction.cs:47)
Unity.Serialization.Binary.BinaryPropertyReader.ReadValueWithoutAdapters[TValue] (TValue& value, System.Boolean isRoot) (at Library/PackageCache/com.unity.serialization@2.0.0-exp.11/Runtime/Unity.Serialization/Binary/Properties/BinaryPropertyReader.cs:274)```
...
```Unity.Scenes.SceneSectionStreamingSystem:ProcessActiveStreams(SystemState&) (at Library/PackageCache/com.unity.entities@1.0.0-exp.8/Unity.Scenes/SceneSectionStreamingSystem.cs:455)```

[wraith hinge]

fixed in an upcoming editor release iirc

was a bug in properties

[viral sonnet]

oh man, i come back to my project and this happens. all subscenes are - i dunno - broken 😦

had to reimport subscene script.

is anyone else having weird caching problems?

[rotund token]

i haven't seen this one

[balmy thistle]

Do you have any custom baking systems going on? Could be an incorrect dependency breaking incremental baking.

[molten flame]

I have a similar thing happen with my InputActions asset, sometimes it just doesn't serialize/deserialize properly and have to reimport it.

[viral sonnet]

yes i have this baking system where i use baking comps to remove some other comps. could this really be related?

[rotund token]

SceneSection, SceneTag - yeah i can see that breaking some stuff o_O

[viral sonnet]

to my defense, i don't use them anywhere! 😄 subscenes were just my recent error. i had this on all kinds of scripts now

[rotund token]

side note, not sure if you missed it before but there's kind of an official way to strip transform components now

[viral sonnet]

i missed it

[rotund token]

TransformUsageFlags

        /// Use this flag to specify that you want to take full manual control over the transform conversion of an
        /// entity. This flag is an override: When it is set, all other flags will be ignored. The transform system will
        /// not add any transform related components to the entity. The entity will not have a parent, and it will not
        /// have any children attached to it.
        /// This is different from None, because None will result in removing any previously added transform components during incremental baking.
        /// </summary>
        ManualOverride = 1 << 5,```
this one will just ignore everything

[viral sonnet]

oh, how do i set this for the entity that is baked? i'm only using the flag for CreateAdditionalEntity

[rotund token]

GetEntity([optional]authoring, TransformUsageFlags.ManualOverride)

[viral sonnet]

that easy, huh? 😄 cool thanks

can we also control that a entity that is baked will be deleted? i have an authoring go that spawns a bunch of entities but it should remove itself after the bake

[rotund token]

I told KornFlaks about this and he's been using it a bit this moring so can ask him for more actual implementation experience if you want

[proud jackal]

Wow, you found it! TransformUsageFlags are not really explained anywhere tmk, tho they are defintly nice for this exact reason! :3

[rotund token]

not sure about actually destroying entities (there's some vague stuff in there i haven't read through enough) but an alternative is just dump all your authoring data on a component

and use the temporarybakingtype attribute to remove it at the end

[proud jackal]

Don't quote me on this, but I think an entity with only bakingtypes and manualoverride will auto delete after baking

[viral sonnet]

thanks, i'll try that

[viral sonnet]

ManualOverride indeed works. interestingly, TransformUsageFlags.None doesn't.

[viral sonnet]

sadly not, ends up as empty entity

[proud jackal]

Gotcha! Thx for letting me know :3

[rotund token]

ok time for me to just collect all my random conversion errors and post them all up at once

ArgumentException: An item with the same key has already been added. Key: 9af0ad5d699bef14294c79b00d200e65
LiveConversionConnection.cs:360)
a quick search of this channel and i can't see anyone posting this before

but if i just spam errors all day that's not really helpful

hey at least this one is easy to repo: start game, spam open/close a subscene in the hierarchy

[viral sonnet]

yep, can repo. not on all subscenes though. killed my unity with errors 😄

[rotund token]

you remember my method for ensuring settings/etc are in game without checking singletons?

it always had 1 annoying flaw, opening/closing subscenes at runtime would make these components disappear for a few frames

well i solved it finally and that's why I was spamming open/close on the subscene ^_^'

[viral sonnet]

if i learned something from webdev in the past. always spam buttons that are not supposed to be spammed 😄

[whole gyro]

I read through the code on this the other day. TransformUsageFlags.None will always be overwritten by any other call to Baker<>.AddComponent() since it passes TransformUsageFlags.Default. Maybe if you add no other components, but even then I wouldn't be surprised if some internal thing is setting the flags back to default.

[viral sonnet]

good to know, i don't add any comps though. it's the empty entity screenshot i posted above

[whole gyro]

Oh and TransformUsageFlags.None corresponds to a value of 0 so setting any other flag will overwrite it. Unlike TransformUsageFlags.ManualOverride that can work in conjunction with things setting TransformUsageFlags.Default since its a bitmask

[whole gyro]

yeah, you aren't adding any but something is added all of those scene-related components.

So I think the documentation on TransformUsageFlags.None isn't very accurate.

        /// <summary>
        /// Use this flag to specify that no transform components are required. Unless someone else is requesting other
        /// flags, the entity will not have any transform related components and will not be part of a hierarchy.
        /// This does not affect its membership in any <see cref="LinkedEntityGroup"/> components that might be created
        /// based on the source GameObject hierarchy.
        /// </summary>

Even though you specify that your baker doesn't need transform components, unity's own stuff is. The only way around this is ManualOverride.

[rotund token]

hmm with 1.0 i've managed to completely remove my custom bootstrap and basically all start up custom code except for overriding AutomaticWorldBootstrap because I want to change world creation from BeforeSceneLoad to AfterSceneLoad so my systems can get the managed components (i.e. UIDocument) from the scene in OnCreate

no one has like a brilliant idea how i could work around this? i'd love to just be able to rely on default setup

[whole gyro]

Can you get the managed components in OnStartRunning() instead?

I'm actually not sure when OnStartRunning() happens compared to scene load

[rotund token]

yeah that's my current thought

(it's fine i've already tested it)

the only problem is

the system doesn't actually update

so that bothers me a tiny bit 😄

        protected override void OnUpdate()
        {
            // NO - OP
        }```
i could make it do Enabled = false in here and it'd be fine

but it's the principle of the matter

it's going to eat at me

[whole gyro]

Make your systems implement an IAfterSceneLoad interface? Find them all with reflection and call their callbacks after the scene is loaded

[rotund token]

i'm very specifically trying to not use any hacks

[whole gyro]

ha

[rotund token]

so this library is just droppable in anyones project and works

just going to suck it up and use OnStartRunning

[whole gyro]

What about accessing that managed data through a property? Inside the property getter, it looks for the managed component or returns null. If found, it caches it in a field that the property returns on future calls. Then in OnUpdate(), check for null

[rotund token]

it's only ever used once

        {
            if (this.root != null)
            {
                return;
            }

            var document = Object.FindObjectOfType<UIDocument>();
            if (document == null)
            {
                Debug.LogError($"{nameof(UIDocument)} not found.");
                this.root = new VisualElement();
            }
            else
            {
                this.root = GetRoot(document);
            }

            this.root.Add(this.view);
        }```

anyway you convinced me to suck it up and use OnStartRunning

which has now removed all custom bootstraps and initialization 🥳

[whole gyro]

Haha yay 🎉

[devout prairie]

so i take it, based on what you've said, OnStartRunning happens after any sceneload?

i started using OnStartRunning recently and realised it removes some of the hackery in trying to step around when systems vs monos are created etc

[rotund token]

oh yeah

[viral sonnet]

do you control OnStartRunning with a RequireForUpdate?

you might want to check for the presence of the view in the list when for some reason OnStartRunning triggers again

[rotund token]

i have Enable = false in OnUpdate

and it early outs if root as been setup

            {
                return;
            }```
in case someone accidently starts running it again from system window

so we have these super handy
SystemAPI.GetComponentLookup<T>()
when can we get super handy
SystemAPI.GetComponentHandle<T>()
!

[proud jackal]

Hmm, I wonder who you would have to convince for that

[viral sonnet]

am I missing something? why are they super handy? they just replace state.Get...

ah yes, missed your early out 🙄 how do you control waiting for the managed objects? doesn't onCreate and OnStartRunning usually trigger in the same frame?

[proud jackal]

They also do .Update and Cache automatically in OnCreate

[rotund token]

gah beat me for once

i just wrote up a fun example

    public partial struct TestSystem : ISystem
    {
        private ComponentLookup<Translation> translations;

        public void OnCreate(ref SystemState state)
        {
            this.translations = state.GetComponentLookup<Translation>(true);
        }

        public void OnDestroy(ref SystemState state) { }

        [BurstCompile]
        public void OnUpdate(ref SystemState state)
        {
            this.translation.Update(ref state);

            new Job { Translations = this.translations }.Schedule();
        }
    }

    [BurstCompile]
    public partial struct Test2System : ISystem
    {
        public void OnCreate(ref SystemState state) { }

        public void OnDestroy(ref SystemState state) { }

        [BurstCompile]
        public void OnUpdate(ref SystemState state)
        {
            new Job { Translations = SystemAPI.GetComponentLookup<Translation>(true) }.Schedule();
        }
    }```

what would you rather?!

[viral sonnet]

THAT is fantastic to know!

that's a really nice way to get around the boilerplate

[proud jackal]

That's the whole Idea behind SystemAPI, meant as an easy way to get rid of boilerplate, with an easy escape hatch when you want the little extra control :3

[rotund token]

yeah, i only realized this after i updated everything and had to go update everything again

[viral sonnet]

gonna rewrite some systems tomorrow with this 😄

[rotund token]

not if i'm just using automatic bootstrap and creating the world before scene load

the playerloop doesn't start ticking till after initial scene has loaded

if i was doing this after scene load i'm not actually sure if they tick the same or next frame

probably depends when i create the world in the frame

[devout prairie]

Just curious about this - GetComponentLookup is CDFE right.. Would you normally cache CDFE in create? Pre 1.0 i mean of course.. I've never cached CDFE before..

[rotund token]

pre 1.0 no you can't

post 1.0 they added the same Update method that handles got for performance and it should not be got every frame anymore

[devout prairie]

ok yeah so it's optimized out and cached

so i'm right in saying then, we cannot cache GetComponentDataFromEntity in OnCreate in 0.51?

[rotund token]

you can not

only component/buffer handle

[devout prairie]

Ok haha, just double checking that one!

GCLookup is indeed a nice touch, look forward to using that

[gentle gyro]

2022.2.0b10 is now available...

Hoping it fixed the IL2CPP bug... 🤞

[rotund token]

congratulations david on volunteering to be the channels test dummy, please report back asap

[gentle gyro]

🤣 😂 😁

Will do...

[balmy thistle]

No, pretty sure b10 won't contain the fix.

[gentle gyro]

Darn...

[balmy thistle]

Well, I guess I should be specific, there is a particular il2cpp bug that I seem to remember you hit in Quest2 and I don't think that's in b10, there may be other il2cpp fixes there.

[rotund token]

"Who's deleting my companion objects?! 😡 "
journaling - "you are"

where was this window 2 years ago

[rotund token]

hmm just updated my AlwaysUpdatePhysicsWorld system, still haven't heard an argument why this shouldn't be done but it still concerns me

[molten flame]

tertle is in a moooood today and I'm here for it 😂

[rotund token]

it's my fortnightly day off

which means super entities focus

but just to debate this again,
AlwaysUpdatePhysicsWorld is a system that will update the BuildPhysicsWorld even when your fps > fixed tick and fixedstepsimulation group hasn't run

it won't update the simulation (step), just the physics world

this ensures if new entities are created or something is destroyed if you do a query on the physics world it will exist

Update
Fixed
Update - Create Entity1
Update - OverlapSphere, entity1 not returned
Fixed
Update - OverlapSphere, entity1 returned```

to avoid this issue

[molten flame]

ah so gives your frame perfect collision queries, hmm most people would want this by default I would imagine

[rotund token]

well everyone has told me it's a bad idea

but never given a convincing reason why

[molten flame]

I can't think of why you wouldn't want this other than to save a small bit of processing power

[rotund token]

"Performance" - it only slightly slows down performance if you are rendering > physics which is typically >60fps which means you're doing /ok/
If you were to move your systems inside of fixed update instead it would hurt performance if you were <60fps causing a fixed update death spiral

So I'd argue it's better for performance than the alternative because targeting low end is more important

The reason why this came about for me is my fracturing / cluster system which needs to know about anything it spawns next to, that frame

otherwise it's going to fracture due to no connection

[molten flame]

I finally got around to looking through your hybrid solution tertle, looks really cool man.
I like the way you handle cleanup, much more controlled than the dispose solution I had going.

[rotund token]

it's worked well for me

[rustic rain]

Did last patch fix UI issues with hierarchy?

[rotund token]

maybe

Hmmm, is there a reason Memory.Unmanaged.Allocate is internal

UnsafeUtility.Malloc does not seem to support rewind allocators and all the containers seem to use this so it seems like the right thing to do for my own container

[rustic rain]

bruh, bug still exists

[rotund token]

what was your error again? it was pretty specific right

i don't think i've heard anyone else have this specific one

[rustic rain]

in playmode subscenes look like this

outside of playmode they look good

[rotund token]

have you checked with entity journaling what removes it?

[rustic rain]

journaling is empty

I tried enabling it

but nothing is recorded

[rotund token]

hit pause button

hit play

go to journaling and start recording

unpause

[rotund token]

^ had a similar issue this morning

alternatively, how are you opening your subscenes

alternatively, how are you creating your worlds

sounds like you're doing something like
var sceneEntity = SceneSystem.LoadSceneAsync(world.Unmanaged, _SceneGUID, loadParams);

[rustic rain]

nah, nothing is recorded

[rotund token]

but not doing
EntityManager.AddComponentObject(sceneEntity, this);

[rustic rain]

error happens as soon as I open Hierarchy window

[rotund token]

where this = SubScene

[rustic rain]

yeah

[rotund token]

i.e. are you opening subscenes without adding the SubScene component

if you're delaying your world creation until after OnEnable() then you aren't letting SubScene set up the entities and you probably have to do it yourself

#if UNITY_EDITOR
            flags |= EditorApplication.isPlaying ? SceneLoadFlags.BlockOnImport : 0;
#else
            flags |= SceneLoadFlags.BlockOnImport;
#endif
            foreach (var world in World.All)
            {
                var sceneSystem = world.GetExistingSystem<SceneSystem>();

                var stateptr = world.Unmanaged.ResolveSystemState(sceneSystem);
                if (stateptr != null)
                {
                    var loadParams = new SceneSystem.LoadParameters
                    {
                        Flags = flags
                    };

                    var sceneEntity = SceneSystem.LoadSceneAsync(world.Unmanaged, _SceneGUID, loadParams);
                    stateptr->EntityManager.AddComponentObject(sceneEntity, this);
                    _AddedSceneGUID = _SceneGUID;
                }
            }```

is what it does in OnEnable

but if your world doesn't exist yet

[rustic rain]

world exists though

hold up, I need to catch up

😅

public class CustomWorldInit : ICustomBootstrap
    {
        private World _world;
        private BootExtensionManager _bootExtensionManager;

        public bool Initialize(string defaultWorldName)
        {
            SceneManager.sceneLoaded += SceneManagerOnSceneLoaded;

            Debug.Log("Creating world");

            _world = new World(defaultWorldName);
            World.DefaultGameObjectInjectionWorld = _world;

            _bootExtensionManager = new BootExtensionManager(_world);

            return true;
        }

        private async void SceneManagerOnSceneLoaded(Scene arg0, LoadSceneMode arg1)
        {
            Debug.Log("Creating systems");

            SceneManager.sceneLoaded -= SceneManagerOnSceneLoaded;

            var systems = DefaultWorldInitialization.GetAllSystems(WorldSystemFilterFlags.Default);
            var bootSystems = systems.Where(x => typeof(IBootSystem).IsAssignableFrom(x)).ToList();
            var otherSystems = systems.Except(bootSystems).ToList();

            _bootExtensionManager.CreateBootExtensions();

            DefaultWorldInitialization.AddSystemsToRootLevelSystemGroups(_world, bootSystems);

            foreach (var system in _world.Systems)
            {
                if (system is IBootSystem bootSystem)
                {
                    await bootSystem.Ready();
                }
            }

            DefaultWorldInitialization.AddSystemsToRootLevelSystemGroups(_world, otherSystems);

            _bootExtensionManager.PostBootExtensionCall();

            #if !UNITY_DOTSRUNTIME
            ScriptBehaviourUpdateOrder.AppendWorldToCurrentPlayerLoop(_world);
            #endif
        }
    }

here's what my CustomBootstrap looks like

So I pretty much copy default init

but with delayed load

of systems

should I create certain specific systems?

during Initialize call?

[rotund token]

ding ding

because subscenes call this in OnEnable

your world won't exist yet to setup the scene entities

i delay world load as well, just do what I do,
Grab all scene entities and call
var entity = SceneSystem.LoadSceneAsync
this.EntityManager.AddComponentObject(entity, subScene);

hopefully that fixes the issue

[rustic rain]

world does exist though

because I use interface to create it

and I do create

same as default init

but systems don't

[rotund token]

int has nothing to do with it

[rustic rain]

which might be the case

[rotund token]

OnEnable is a monobehaviour

did you override AutomaticWorldBootstrap?

[rustic rain]

yeah, and world is created before the scene is

[rotund token]

and the scene systems are included?

[rustic rain]

no, I just used ICustomBootstrap

        public bool Initialize(string defaultWorldName)
        {
            SceneManager.sceneLoaded += SceneManagerOnSceneLoaded;

            Debug.Log("Creating world");

            _world = new World(defaultWorldName);
            World.DefaultGameObjectInjectionWorld = _world;

            _bootExtensionManager = new BootExtensionManager(_world);

            return true;
        }

here's what exist by the time Awake, OnEnable and etc are called

[rotund token]

so you aren't adding the systems though

so the code above still fails

[rustic rain]

yeah, I see

so

what system do I need

to create

so subscenes are registered correctly?

[rotund token]

all the subscene ones

or dont bother

just when you create your world

just do FindObjectsOfType<SubScene>

and do the above

or alternatively, keep all your subscenes disabled and just enable them all after world is created

[rustic rain]

🤔

I'd rather create subscene systems

I just need to know which

I assume

SceneSystem is one

[rotund token]

There's some scene section ones

[rustic rain]

I wonder if they have any sort of attribute on them

so I can easily query them through reflection

[rotund token]

They're all isystem now I think

[rustic rain]

that's fine

DefaultWorldInitialization.AddSystemsToRootLevelSystemGroups(_world, bootSystems);

works well with Type[]

[UpdateInGroup(typeof(SceneSystemGroup))]

huh

[rotund token]

work?

[rustic rain]

just finished testing

yeah

works

thanks!

🤔

no errors, but

smth is wrong

[rustic rain]

await UniTask.WaitUntil(() => SceneSystem.IsSceneLoaded(World.Unmanaged, sceneEntity));

yep

this does not work

it's forever awaited

without a result

weird

[rotund token]

sounds like you aren't ticking your world

[rustic rain]

I do

hold up

SceneSystem group is emtpy

I guess that's no good

            var sceneSystems = otherSystems.Where(x =>
                    x.GetCustomAttributes<UpdateInGroupAttribute>()
                        .Any(x => x.GroupType == typeof(SceneSystemGroup)))
                .ToArray();

here's how I get SCeneSystemGroup

[rotund token]

doesn't seem like that would include the scene system group itself

[rustic rain]

oh

right

yay, that was it

DrawMeshInstanced does not support the shader 'Universal Render Pipeline/Unlit' because it does not read any instanced properties. Try switching to DrawMeshInstancedProcedural if the shader is doing procedural instancing.
hmmm

hmmm

Exception in Burst now don't say what system it is

[rotund token]

it never really did?

[rustic rain]

it did, just without blue links

it said class name in exception

[rustic rain]

Finally
Managed to get partial functionality of project 😅

[half jay]

How to properly convert GameObjects that should be rendered to Entity. Earlier it was easy with ConvertToEntity and all convertation was doing automatically. Now i should do it through Bake and add all components myself needed for rendering?

[rustic rain]

rendering is done by Unity

[rustic rain]

Anyone else getting this error from clicking on entity in hierarchy?

ArgumentNullException: Value cannot be null.
Parameter name: _unity_self
UnityEditor.UIElements.InspectorElement.GetOrCreateEditor (UnityEditor.SerializedObject serializedObject) (at <68dc13de18804097a5f386c11cbbb64f>:0)
UnityEditor.UIElements.InspectorElement.Reset (UnityEditor.SerializedObject bindObject) (at <68dc13de18804097a5f386c11cbbb64f>:0)
UnityEditor.UIElements.InspectorElement.ExecuteDefaultActionAtTarget (UnityEngine.UIElements.EventBase evt) (at <68dc13de18804097a5f386c11cbbb64f>:0)
UnityEngine.UIElements.CallbackEventHandler.HandleEvent (UnityEngine.UIElements.EventBase evt) (at <c9c6a76099e240a893d3af0dc16ae863>:0)
UnityEngine.UIElements.CallbackEventHandler.HandleEventAtCurrentTargetAndPhase (UnityEngine.UIElements.EventBase evt) (at <c9c6a76099e240a893d3af0dc16ae863>:0)

[rustic rain]

hmmm

what would be a better approach

Have an entity with special tag, which gets all sorts of components added to it for events

and then in systems that must update depending on those components, will only require single query of selected components

OR

for every single possible component type create singleton

and then just enable/disable it?
While in systems declare requirements for multiple queries

Any thoughts on this?

[devout prairie]

Just drop it in a subscene no?

[half jay]

I only have a few gameobjects and I'm not sure that I should use subscene for this

[rustic rain]

it's the only way to convert to entity

[devout prairie]

I think 1.0 has dropped ConvertToEntity completely right

Subscene and Bakers only

You must become a Master Baker

[robust scaffold]

Ive been master baking all day long. Ive been having to revise and edit my long and very wide strip of authoring code up and down.

[devout prairie]

maybe with a stroke of luck, your master baking will produce the results you require.

[robust scaffold]

Woah, new rider UI is slick

[rustic rain]

?

what new rider UI?

[robust scaffold]

EAP2 rider, new UI.

Rainbow brackets unfortunately doesnt work with it. Otherwise, looks cool

[rustic rain]

for a second I thought you were joking and this is VS

[robust scaffold]

It's the new rider. Well, new soon.

[robust scaffold]

Does anyone know how to use the SystemAPI Query with an existing entity query? Do I need to construct a new one every time?

[whole gyro]

Ooh I guess its time to update

[robust scaffold]

The main bonus is shifting code tabs is like VSCode. A lot smoother and it shows where the tab will line up below the icon.

[whole gyro]

It also just looks way less busy

unless that part isn't new and I've somehow missed a focus mode

[robust scaffold]

There is a focus mode but that just fullscreen-ed the editor. This removes the top bar which is nice.

[rustic rain]

Codegen creates it manually in oncreate

stores it in a field

and then uses it

[robust scaffold]

Is there a .WithNone or .WithAny option?

[rustic rain]

no idea, barely use it

[robust scaffold]

Unity uses it everywhere, at least in their training samples, so it's pretty important.

I think this works.

[rustic rain]

well, it's just an easy way to iterate over chunks on single thread

here and now

under the hood it's same as
query.GetChunkArray
and then foreach chunk foreach entity...

oh wait

you mean query builder

[robust scaffold]

Yea... that's what im doing anyways.

[rustic rain]

😅

[robust scaffold]

The query builder is a different section of code

[rustic rain]

oof, hard to get used to all that stuff

after doing it for almost a year manually

[rustic rain]

btw, how do you enable that thingy on the right that let's you quickly scroll over?

[robust scaffold]

I would like to make this into a SystemAPI.Query but the .WithNone<Tag>() doesnt seem to work.

[robust scaffold]

The code vision? That's a plugin: CodeGlance Pro (which is free)

[rustic rain]

yeah

good stuff

[robust scaffold]

It's the only one that I've seen that is actually colored from the code. Which is sweet. I dont think VSCode does that.

[rustic rain]

I remember that feature from VS

missed it a bit

[robust scaffold]

I cant live without it. Thankfully, people smarter than me also cant and made that plugin.

IIRC, cleanup component datas with properties (not tags) do not show up in the entity inspector view. Are they baked or not?

0.51 didnt bake system state components, did 1.0 change that?

[rustic rain]

no

cleanup components are runtime only

[robust scaffold]

ugh, pain

That means I am forced to use companion GOs....

[whole gyro]

Do you use Toolbox to update rider? For some reason it isn't showing me EAP2. Only EAP1

[robust scaffold]

I just went to the download page itself:https://www.jetbrains.com/rider/nextversion/

[whole gyro]

mmk, I'll try that

[robust scaffold]

Also, i like your idea for the hybrid component and i'm trying to see if I can do it myself

It depends on if the baker runs before or after inspector update

[whole gyro]

Are you thinking of relying on the existing companion stuff or implementing a new version of that?

[robust scaffold]

New version, the existing companion GOs have several hardcoded transform sync systems that interfere / override physics2D. Which is bad.

[whole gyro]

Got it. Yeah, I think the companion stuff shouldn't have any special handling for transforms. Too many different things to try and support there. Better to leave it to users to implement their own transform syncing systems

Do you know if its possible to stop baking from deleting the authoring game object?

[robust scaffold]

Nah, I'm instead gonna make a copy of every Unity component then recreate the managed companion GO at start of runtime.

[whole gyro]

Yeah, that seems like a good approach. I wish it was possible to do it at bake time but I think it will require some internal changes

[robust scaffold]

Yea, if I could use SS/CCD at baking, recreating companion GOs would be trivial.

[whole gyro]

SS/CCD?

[robust scaffold]

SystemState or as they're called now Cleanup Component Data

[whole gyro]

You can if you are creating the companion GO at runtime anyways

[robust scaffold]

The main issue is deleting the GOs when the entity they're attached to is deleted as well, such as when incremental baking occurs. And the only way to do that is through CCDs

[whole gyro]

Oh you mean doing this during baking?

[robust scaffold]

Ideally yes. But without access to CCDs, i'm doing it at runtime.

[whole gyro]

Yeah makes sense

[robust scaffold]

I want to be able to add this managed component monobehavior script to a GO thats being converted and instantly detect all unity components that are not converted (which is, for me, all of them) and populate a list without needing to manually drag and add to a list.

[whole gyro]

You can iterate all unity components from a monobehaviour:

foreach (Component component in GetComponents(typeof(Component))) {
    // Do stuff
}

[robust scaffold]

I think default GetComponents returns all, no need for the typeof filter.

[whole gyro]

Good to know, thanks. Sorry I thought you were asking how to do this.

[brave field]

Do u mean combine entity and game object at Baker just like how convert and inject game object works but now bake into subscene?

[robust scaffold]

No worries. I'm just slowly making my way through it.

[whole gyro]

I agree that it should auto-populate and should be readonly. I'm not super familiar with the builtin monobehaviour events but is there one that gets called every time a unity component is added to the game object?

[whole gyro]

Yeah pretty much. I'm not sure if subscenes are able to store the game objects in the post-bake format though. Seems like they are entity only. But I also know that companion link still works so they appear to be doing it somehow.

Or is the existing companion link also at runtime?

[robust scaffold]

[CustomEditor(typeof(BridgeAuthoring))]
public class BridgeInspector : Editor
{
    private SerializedProperty _components;
    
    private void OnEnable()
    {
        _components = serializedObject.FindProperty(nameof(BridgeAuthoring.managedComponents));
    }     
    
    public override void OnInspectorGUI()
    {
        DrawDefaultInspector();
        
        serializedObject.Update();
    }
}```
It's gonna be something like this. Where OnInspectorGUI it repopulates a list of ManagedComponents.

[whole gyro]

Cool thanks. I was hoping there was an event that would trigger less often then every repaint, but this should work fine.

[robust scaffold]

Yea, but the inspector's conditional repaint is dependent on the script that it's serializing, not the GO as a whole.

[whole gyro]

One of the reasons for keeping the authoring game object around instead of cloning is that I would like to keep the game object hierarchy intact. For example, if I want a hybrid animator, I may the child bone transforms to be updated by the animator.

I know this makes things tricky, but I was imagining having every bone game object have this hybrid monobehaviour attached to it with the transform box checked. Then at runtime, the hierarchy is exactly like it was in authoring

[robust scaffold]

Oh, yea. No clue about that. My hierarchy is completely flattened.

[whole gyro]

I think this is one of the reasons why unity is hesitant to support hybrid stuff. Lots of weirdness when you start thinking about hierarchies and transform stuff

I guess I could do something like your approach, but clone the entire game object hierarchy. Then iterate through it and delete anything that isn't needed

[robust scaffold]

Definitely. Hrm, redraws happen a lot. I need to find a way to check if the GO as a whole changed.

[whole gyro]

hmm what's this? https://docs.unity3d.com/ScriptReference/ObjectChangeEvents.html

[robust scaffold]

Hrm maybe

[robust scaffold]

https://gist.github.com/karljj1/f8adaf0024288052f991191777110f3d
There's a global stream and tacking on every single GO to watch it doesnt seem performant.

[whole gyro]

Hmm yeah. Seems less than ideal but not finding another way

[robust scaffold]

Hrm, maybe instead of a custom inspector, there's this global class that listens to this stream and checks if every GO that has changed contains the BridgeAuthoring MB component. Then calls a refresh method on that component to repopulate the Managed list.

[whole gyro]

Yeah that could work

I gotta run, but good luck! Curious to hear if you get it working

[robust scaffold]

Yep, grinding through this slowly

[oblique cosmos]

Need a quick reminder: There was something about 1.0 ECS and physics, but I can't recall what. Was is just the transform aspect thing not being in physics yet? Is that what I'm thinking of? Or is there more?

[robust scaffold]

public override void OnInspectorGUI()
{
    var script = (BridgeAuthoring)target;
    if (GUILayout.Button("Refresh"))
        script.Repopulate();
    
    // public void Repopulate()
    // {
    //     Component[] components = GetComponents(typeof(Component));
    //
    //     // * Recreate managed component list.
    //     managedComponents ??= new();
    //     managedComponents.Clear();
    //
    //     managedComponents.AddRange(components.Where(component =>
    //     {
    //         // * Default is managed component.
    //         var pass = true;
    //
    //         // * Filter out skipped components.
    //         // ! HARDCODED: Skips transform components.
    //         pass &= !Skip.Contains(component.GetType());
    //
    //         // * Filter out authoring scripts.
    //         // ! HARDCODED: Authoring scripts must have a name containing "Authoring".
    //         pass &= !component.GetType().Name.Contains("Authoring");
    //
    //         return pass;
    //     }));
    // }
    
    DrawPropertiesExcluding(serializedObject, "m_Script");
}``` This seems to work.

[robust scaffold]

The new transform components (TransformV2) are not yet implemented in physics and netcode.

[safe lintel]

@oblique cosmos new transform system isnt used by netcode or physics(afaik presence of either will disable it), havent used aspects yet personally

[oblique cosmos]

But that's pretty much it, otherwise it's functional, yea?

[robust scaffold]

Yea. Functional.

[oblique cosmos]

Cool, thanks!

[robust scaffold]

Managed component storing a copy of the list found in the inspector.

Would be nice if I could add a checkbox next to each element in the inspector list but that requires advanced custom inspector editing. And the same can be done by just removing it from the list using the "-" button.

[whole gyro]

Nice looks great!

[quick gazelle]

If you're creating the EntityQuery in OnCreate, you might as well just use EntityQueryBuilder directly.

_destroyed = new EntityQueryBuilder(Allocator.Temp).WithAll<BridgeObject>().WithNone<BridgeTag>().Build();

SystemAPI is useful if you want to just do that in OnUpdate; it will sourcegen the query creation in OnCreate for you. If you don't mind doing it yourself, you'll save a little bit of build time.

[whole gyro]

With Odin Inspector, its pretty easy to do this. Instead of storing a list of Component, you store a list of structs that contain a bool and a Component. Then draw them on the saw row with HorizontalGroup attributes:

public class ManagedComponents : MonoBehaviour
{
    public List<ManagedComponent> Components;

    [Serializable]
    public struct ManagedComponent
    {
        [HorizontalGroup(20, LabelWidth = 0)]
        [HideLabel]
        public bool AddAsManaged;

        [HorizontalGroup(LabelWidth = 0)]
        [HideLabel]
        [ReadOnly]
        public Component Component;
    }
}

[robust scaffold]

hrmmmmmmmm, doesnt work if the subscene is closed.

[robust scaffold]

Ah, dont have odin.

hrmmmmm

Well, you just cant close / stream subscenes with this. Unless i can serialize the entire component.

[whole gyro]

Not sure how you have it set up, but your authoring game object will be deleted at the end of baking. If you then try to reference those components at runtime, they won't exist any more

[robust scaffold]

They are deleted but because I'm keeping the reference to each component alive and active in this managed component data, I can still access the data of the original game object. So long as the original has not been completely deleted.

I can see and access the managed components so long as the source subscene is open and the original GO is still alive.

Of course, the center game view is displaying nothing because the actual GO within the greater scene has been deleted.

hrm, I think the only way for this to work with the subscene closed is the assembly ref hack

And then swap CompanionLink component with a custom managed component at start. Disabling the built in transform syncs but otherwise operating through the CGO built in baking system.

[whole gyro]

Yeah, with the scene view open, I think it keeps the authoring game objects around so that you can toggle data modes and see the authoring view in the inspector. But with the subscene closed, I think the only thing that remains is the entity data. But again, I'm not sure how CompanionLink currently works since they are somehow working around this problem.

[rustic rain]

I'm guessing, since all systems now run always by default
GetEntityQuery doesn't cache query inside list of required queries for update?

[robust scaffold]

They do all of this except with a manual implementation of a CCD for synchronizing CGO and Source Entity lifetimes.

If the baker could allow for CCDs, this whole thing would be trivial to implement. But it doesnt, so CGOs go deep into Entities to make it possible.

[robust scaffold]

Oh, cool.

[whole gyro]

I don't really understand how ICleanupComponentData in a baker makes this trivial. If that is all you need, can't you add a normal ICD and then have a system that replaces it with an ICCD in the first frame?

[robust scaffold]

It's an issue with the iterative baking system. It will continually recreate the GO every time the baker runs and using the instance ID for unique name to prevent duplicate creation doesnt work. Closed and open baked game objects have different instance IDs.

[whole gyro]

hmm okay, sounds more complicated than I thought

[devout prairie]

this all sounds like pain, i think i'll wait for 2.0

[robust scaffold]

The provided CGO works fine for hybrid, if I can just disable the built in transform sync. I need to reverse the direction of synchronization.

hrm, maybe disabling the system might work

[devout prairie]

i'm kinda joking tbh, just hoping conversion isn't too much hassle to port over, everything else looks like pure improvements

[whole gyro]

It sounds like a lot of people have been just fine with baking a reference to a prefab game object. Then at runtime, instantiating it and linking it to your entity. This isn't too difficult to set up and tertle has shared their implementation of this already. But the main limitation with this approach is that your managed components are authored in a prefab asset, so it can't reference other things in your subscene.

[robust scaffold]

The issue with prefab is that you need additional baking components to modify per instance the GO properties that are just the properties of the source GO.

[whole gyro]

Yeah good point. This prefab setup really only works when it only references other assets and all of the GO properties can be left as whatever they are set to in the prefab.

[rotund token]

I don't really get why you need extra components for this?

[whole gyro]

I think they mean, on the authoring game object in the subscene, you need both a reference to the prefab asset and additional components/fields with any overrides for the instantiated prefab

[rotund token]

You just have more than 1 prefab

And you can use prefab instances to share data

It's like no different to having more than 1 gameobject in the scene

[whole gyro]

right, that's what I was trying to say. You have to either leave the prefab/variant as-is after instantation, or have support for some kind of complicated override thing on the authoring game object.

[rotund token]

I'm still a bit confused, are you talking about runtime editing?

Like after you instantiate it

[whole gyro]

With the override idea, yes. I'm not advocating for that option btw, just saying that it is an option if you want to change a few fields on an instantiated prefab.

[robust scaffold]

Ugh. I think I'm just gonna drop this whole conversion thing and go back to runtime conversion. It doesn't cost that much anyways and I won't be using subscene streaming for the foreseeable future

[whole gyro]

For me, the deal breaker with the prefab workflow is not being able to reference other things in the subscene, or other hybrid objects

[whole gyro]

So runtime conversion of a game object in the regular scene?

[robust scaffold]

Basically. Just a MB that spawns an entity in OnCreate and populates it manually from there.

[rotund token]

Or! Make it pure 🙃

[robust scaffold]

Skips the whole Companion nonsense if the original GO was never destroyed to begin with

I tried to roll my own physics engine, didn't work

[viral sonnet]

what's the problem with baking?

[robust scaffold]

Hybrid

[rotund token]

He's making a gameobject game and tacking on entities

[viral sonnet]

where do you have trouble?

[robust scaffold]

I want an entity game using physics2d

I want an entity game that uses sprites. I want an entity game that uses tilemaps.

Hybrid basically. And baking with hybrid doesn't work.

[viral sonnet]

i have some hybrid baking. spawns some gos or entities in both directions

[whole gyro]

Yeah, its just a shame that we can't use Bakers for this, but its good approach. I already do this for scene objects that don't have any normal ICD on them. Just an entity with some managed components referencing monos

[whole gyro]

Relies on prefabs though, right?

[viral sonnet]

scene gos also work

[whole gyro]

scene game object linked to a baked entity somehow? Or runtime entity creation?

[viral sonnet]

the scene go spawns a (baked) entity prefab. no runtime conversion of course

[whole gyro]

how does this work? Like how do you reference the baked entity prefab from the scene without cross-scene references?

[rotund token]

You could just use weak asset references like dots shooter sample

[viral sonnet]

either that which would make it full generic, a dedicated spawner or ids

[whole gyro]

Haven't heard of that. So is the weak ref on the entity in the subscene pointing to the scene game object? Or the other way around?

[rotund token]

(I'd make the baked entities reference the game objects but either way technically works)

[whole gyro]

I guess I don't understand how game object can reference a baked entity. In the editor, all we have is the authoring game object. But I could see how the reverse could work. Either way, definitely didn't know about weak asset references.

I'm currently doing something with custom tags/ids, but not really happy with it.

[viral sonnet]

ids are not too bad. weakassetreference also relies on it https://github.com/Unity-Technologies/DOTSSample/blob/master/Assets/Unity.Sample.Core/Scripts/WeakAssetReference/WeakAssetReference.cs

it uses the asset guid

[rotund token]

you can implement it however you want

but yeah unity used guid because they only used it on cross scene prefabs

[viral sonnet]

sure, using the guid from the asset just makes it very straight forward

[whole gyro]

Just starting looking at the code. But with the name "asset", makes me think it wouldn't work on game objects in the scene, only prefab assets. But you're saying it works

[rotund token]

so they'd register all their prefabs in 1 scene, convert

and other scenes could reference these

[viral sonnet]

if you don't have too much and don't need a generic solution. strongly typed works also fine

worth it to upgrade to b10? i haven't seen much changes in the notes

[rotund token]

i seem to be getting less random ui element errors

but could be coincidence

[whole gyro]

what do you mean exactly? Like some component on the entity that uniquely identifies it?

So that gameobject can just query for that component type?

[viral sonnet]

dedicated spawner comp, dedicated spawner system

identified by struct type

[rotund token]

every time i turn a SystemBase into an ISystem I get a swell of joy

also rewrote my drawer yesterday
var drawer = SystemAPI.GetSingleton<DrawSystem.Singleton>().CreateDrawer();
so much cleaner

than storing it in OnCreate, creating an instance each frame + addhandleforproducer

i'm wondering if I can write a generic or inheritable version of this pattern

[quick gazelle]

Systems still cache their queries. EntityQueryBuilder.Build(SystemBase) and EntityQueryBuilder.Build(SystemState) just call GetEntityQuery under the hood for now. But that may be going away as it causes subtle bugs if you don't realize it's returning a cached query (and most of the query data is cached elsewhere).

[whole gyro]

Can we store native collections in components on baked entities in a subscene?
I'm getting an error about the pointer in a NativeHashMap:

[Worker0] Exception thrown during SubScene import: System.ArgumentException: Blittable component type 'ECSTween.TweenConfigs' contains a (potentially nested) pointer field. Serializing bare pointers will likely lead to runtime errors. Remove this field and consider serializing the data it points to another way such as by using a BlobAssetReference or a [Serializable] ISharedComponent. If for whatever reason the pointer field should in fact be serialized, add the [ChunkSerializable] attribute to your type to bypass this error.

[rotund token]

are you allocating it?

because if so, no

it's not going to be allocated when you deserialize the subscene

[whole gyro]

yeah makes sense

[rotund token]

as the error message says, you can store pointers with [ChunkSerializable] in subscenes

[whole gyro]

so no native collections in subscene entities, only runtime entities?

[rotund token]

but these will point to something random

it won't be whatever you had beforehand

if you use a null pointer you can check and allocate it at runtime and avoid the structural change

[viral sonnet]

the allocation has to be at runtime

[viral sonnet]

a structural change might be worth the constant null pointer check.

[whole gyro]

yeah okay. I need it to be populated with the authoring data. I can just use a buffer at bake and convert to a hash map at runtime or something

[rotund token]

yeah in general, but you could just have a single instantiate system that will always run per new entity type

(that said I disagree with putting native containers on regular entities anyway, [good on singletons])

remember you still need to deallocate it

[whole gyro]

yeah its a singleton

[viral sonnet]

OrderChange filter also works

ah with a singleton i'd just create it at runtime

[rotund token]

think he just wants to bake the data

i used to do something like this for my prefab registry

just bake it all in a buffer

at runtime if buffer exists, remove it make it into a hashmap

[whole gyro]

yeah that was my new plan 👍

[rotund token]

i don't do this anymore as I now use linear keys

and just store it on buffer and the index is the key

but it's totally fine to do

[whole gyro]

Yeah, your K system, right?

[rotund token]

nah

[whole gyro]

oh nvm then haha

[rotund token]

that's too manual for prefab keys

i want this to be automated and unbreakable

[whole gyro]

Interesting. Sounds similar to what I want for my tween registry

[rotund token]

i took a little inspiration from eizenhorn system

[whole gyro]

So if a system wants a prefab, how does it get the index in the buffer?

[rotund token]

but made it branch proof

        var prefab = prefabs[key];```

get the singleton, get the prefab

key is just an int

i think 2billion will be fine

[whole gyro]

haha sure, but how does the system get the key?

[rotund token]

entities have the reference to the key

if a system needed some special key then I would use K for that

and define it by name

[whole gyro]

hmm, not sure how the entity has the key. I assume at authoring you specify a prefab in a normal way. And somehow it gets baked with the correct index

[rotund token]

also each prefab can be stored in a category (defined by K)

yeah pretty much

you just use an int field instead of a gameobject

with an attribute

actually no

i wrapped this with on attribute

you just use

public ObjectId Prefab;

    public struct ObjectId : IComponentData, IEquatable<ObjectId>, IComparable<ObjectId>
    {
        public int ID;```

i wrapped this just so i could change ID type in future if i ever needed (shouldnt happen)

and it has a custom drawer

so it appears as an object field

so you just drag/drop the definition into it

but under the hood it's stored as in int

[whole gyro]

oh that's cool. And where are you storing the list in the editor?

[rotund token]

just on a gameobject

that is converted into the buffer of all of them

you haven't asked the important question though!

how do i handle unique IDs

[whole gyro]

I think I saw your message about that a while back actually

[rotund token]

well that's boring 😄

[whole gyro]

At bake, iterate the asset database or something?

[rotund token]

you dont have to do anything

i lied a little above, you dont use ObjectId

you just reference ObjectDefinition

ok yeah memory was a bit fuzzy

little definition, this has the unique ID (hidden)

this is what you reference

in baking you just call definition.ID

and that's all you store on your component

anyway this is my mornings update to 1.0 job 😄

[whole gyro]

neat, sounds like exactly what I want for my tween scriptable objects. This system of yours isn't generic by any change, is it? 😁

[rotund token]

there's no need to be generic

it's designed to work on every asset in your project

they all just share the same key interface

when crafting there's no reason i can't make a human

or some random effect

whatever entity is chosen will be created 😄

[whole gyro]

Does that mean in authoring, you can set an incorrect type?

[rotund token]

as long as it can be a gameobject and therefore convertable to an entity

[rotund token]

no such thing 😄

but this is why i provide categories

[whole gyro]

I don't want a game object or entity. I want a scriptable object defining some tween parameters that is convertable to a blittable struct

Maybe I'm misunderstanding, but it sounds like your system works with prefabs (within categories). But not any type of scriptable object.

[rotund token]

my system works with entities

all my data is stored on entities

it maps keys -> entity prefabs at runtime

[whole gyro]

Got it. Yeah, I feel like I want the exact same setup, but instead of mapping to an entity, I want to map to some piece of data. So all my tween scriptable objects can be converted to a blittable struct and looked up by key in systems.

Regardless, this was very helpful. I was stuck on the authoring -> baking part when using indices and you helped me figure that out. Thanks!

[rotund token]

oh 1 more note on my baking

i don't hard store a list of anything

during baking i just do a
var guids = AssetDatabase.FindAssets($"t:{nameof(ObjectDefinition)}");

so designers don't need to manually add them to a list

instead i just grab them all

[whole gyro]

yeah I remember reading that a while back. So how does ObjectDefinition.ID work in baking if it is dependent on this running first?

[rotund token]

the IDs are not defined during baking

they are defined during asset importing

once you create an asset definition it is given a unique id

and this never changes

EXCEPT! if 2 people make new definitions in different branches

then when 1 person imports other persons stuff during that asset import it will detect a collision

and fix it

[whole gyro]

solo dev ftw!

[rotund token]

as you are not referencing this ID you are referencing the definition everything just works

[whole gyro]

So if an object definition is deleted, your list is sparse?

[rotund token]

the only way this ever breaks is if 1 dev branches makes IDs, another dev branches makes IDs
dev 1 merges into master, then master is shipped publicly

and then dev 2 merges and breaks dev 1 ids

[rotund token]

asset importer finds lowest ID when assigning

so there is a chance of holes but new assets will fill them

[whole gyro]

ah nice

[rotund token]

            // The importer should keep this close to the number of prefabs
            definitions.Sort((d1, d2) => d1.ID.CompareTo(d2.ID));
            var length = definitions[^1].ID + 1;
            registry.ResizeInitialized(length);```

from my baker

but yeah this is why it was important for me to not manually assign ID's or do them randomly

because i don't want a 2GB dynamic buffer

anyway all this is not required you can just use a hashmap

and not care about your IDs like that

i just happened to want to make a system that handled merge conflicts from multiple devs

and it turned out the solution allowed me to keep ids close and linear so i switched it from a hashmap as it was no longer needed

[whole gyro]

haha yeah I'm just using a hashmap for now

Right now I'm using strings (FixedString64Bytes) for keys. Systems have the strings hardcoded. It don't really like those being hardcoded, but haven't figured out the best way to set this up in authoring.

I have like 20 tween configs needed by 10-20 different systems. No one-to-one mapping. Seems overkill to define an authoring game object for each system

[pliant pike]

So if I use DisableRendering tag then what entity should it be on, because I can't seem to get it to work on an entity that has multiple meshs

[rotund token]

aren't multiple meshes handled by multiple entities

so it would need to be on all of them?

[pliant pike]

yeah

[rotund token]

i wrote this helper a long time ago, haven't tested 1.0 as project that uses it hasn't been updated completely but i don't see why it wouldn't work
https://gitlab.com/tertle/com.bovinelabs.core/-/blob/0.9/BovineLabs.Core/Utility/DisableRenderingHelper.cs

[pliant pike]

yeah but I have the main entity and the two sub entities, which each have the mesh's on

[rotund token]

disables all renderers in a hierarchy

[pliant pike]

I only want to disable one of the entitys renderer

[rotund token]

oh

and putting it on that specific entity is not working?

[pliant pike]

I tried putting DisableRendering on the main, and the sub entities but nothing seems to work

I'm wondering if the entity requires certain components because there's the entities in the buffders which have the materials

[rotund token]

i haven't looked at the rendering changes tbh

[pliant pike]

I'm using 0.5 still so

[rotund token]

oh

yeah this changes a lot in 1.0

i think there's only the single parent now

uses RenderMeshArray instead

[pliant pike]

maybe that script will work you posted, I'll try it anyway, thanks

[rotund token]

im not sure it would be possible to disable 1 sub mesh in 1.0

[pliant pike]

interesting I'd hope it would be possible