#archived-dots | Official Unity Discord | Page 141

odd cipher May 5, 2020, 12:01 PM

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Yeah, I'll do that instead.

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That will work much better, thank you

opaque ledge May 5, 2020, 12:21 PM

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👍

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its an idea i stole from Sark, dont let anyone know 🕵️

wide fiber May 5, 2020, 12:39 PM

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In which update group should I put a JobComponentSystem that creates a job of type ITriggerEventsJob (it checks for physics)

opaque ledge May 5, 2020, 12:40 PM

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between StepPhysics and EndFramePhysics i believe

wide fiber May 5, 2020, 1:26 PM

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Ok

bronze valley May 5, 2020, 3:02 PM

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Hello DOTS community! I'm currently learning this whole DOTS world and I want to use it for a voxel-based game. I'd like to validate some assumptions and decisions with people who have more experience working with DOTS. The topic is kinda long so I made a forum post and wanted to signal boost it here.
https://forum.unity.com/threads/designing-a-voxel-structure-around-ecs.883537/
Any comment, opinion, advice is welcome 🙂

Unity Forum

Designing a voxel structure around ECS

Hello and apologies in advance for the long post :p. I'm currently learning this whole DOTS world and I want to use it for a voxel-based game. I'd like...

amber flicker May 5, 2020, 3:34 PM

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@bronze valley a couple of people here have done various experiments with dots & voxels so will be able to give you much more useful feedback. I'm commenting mostly so you don't feel ignored 😄 - in my opinion 1) There's no need to have an entity per voxel - entities are low overhead but they are an overhead nevertheless, 2) Something like a voxel array per chunk sounds fine to me - there may be more complex strategies for optimisation (like periodically flattening to a giant 1d array?) but I've never done anything with voxels, 3) It's unlikely anyone can tell you straight away what the best architecture is. I understand it's annoying to program things multiple ways but performance will depend a lot on what data sits where, how often which parts are accessed etc. Fwiw I would recommend not over-complicating it to start with - something like what you suggest sounds basically fine to me. It's usually not that time consuming to e.g. change chunks to be filtered by shared components to checking a components value. E.g. re concerns of constraining the size of your voxel array - yes, if you can keep everything in cache, it's faster. But that might not be your bottleneck and ultimately you may end up packing data or storing some of it as blobs or who knows... Just some thoughts. I'm sure more experienced people will step in at some point.

radiant sentinel May 5, 2020, 3:48 PM

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IConvertGameObjectToEntity has been removed?

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guys

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what can i do ?

amber flicker May 5, 2020, 3:51 PM

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are you sure it's been removed? I still get it I think

radiant sentinel May 5, 2020, 3:52 PM

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and i can not use it on my project

📎 unknown.png

bronze valley May 5, 2020, 3:52 PM

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@amber flicker thanks for the reply!
Yes after reading some more about memory fundamentals I concluded 1 voxel = 1 entity is a no-go.
On the other hand, separating voxels into components makes working with them much easier. Maybe in the future I will try to have a doble representation: array of data for "cold" chunks and single entities for "hot ones". Then when a chunk hasn't been touched in a while I "pack" it again. IDK, may work but that's for the future.

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You're right about not overcomplicating. I'm gonna try this idea as-is and see how it goes.

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Thanks!

amber flicker May 5, 2020, 3:53 PM

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@radiant sentinel read it again - that says to use IConvertGameObjectToEntity as the old proxy components have been depreciated

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@bronze valley glhf!

radiant sentinel May 5, 2020, 3:54 PM

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what should i do to authoring?

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to convert

amber flicker May 5, 2020, 3:56 PM

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if you are already using IConvertGameObjectToEntity it doesn't look like you need to change anything...?

radiant sentinel May 5, 2020, 3:57 PM

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@amber flicker

📎 unknown.png

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i can not use it

amber flicker May 5, 2020, 3:58 PM

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using Unity.Entities; ?

radiant sentinel May 5, 2020, 4:00 PM

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@amber flicker yes

📎 unknown.png

amber flicker May 5, 2020, 4:01 PM

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which package version of entities?

radiant sentinel May 5, 2020, 4:02 PM

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@amber flicker lastest Version 0.10.0 p6

amber flicker May 5, 2020, 4:04 PM

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works fine for me - perhaps an issue with your environment?

radiant sentinel May 5, 2020, 4:05 PM

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ok i will restart my unity

amber flicker May 5, 2020, 4:05 PM

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could also try adding public void Convert(Entity entity, EntityManager dstManager, GameObjectConversionSystem conversionSystem) { throw new NotImplementedException(); } to the body, saving and seeing if it compiles

radiant sentinel May 5, 2020, 4:06 PM

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ihave an error on interface

amber flicker May 5, 2020, 4:06 PM

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do you have asmdefs in your project?

radiant sentinel May 5, 2020, 4:06 PM

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? what

amber flicker May 5, 2020, 4:07 PM

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assembly definition files - if you don't know what they are then it's probably not the issue - think you can probably search for their existence if you type t:asmdef in the project window if you want to check

solar ridge May 5, 2020, 4:45 PM

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All fine and dandy here:

📎 unknown.png

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Entities 0.10.0

wide fiber May 5, 2020, 4:55 PM

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Is there a way to destroy an entity and all the children easily? Or I have to get all the children and destroy them 1 by 1?

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I am using an ECB

mystic mountain May 5, 2020, 4:58 PM

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LinkedEntityGroup

opaque ledge May 5, 2020, 4:58 PM

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there is a buffer called "LinkedEntity" or smth, entities that are linked like this destroyed all at once when you destroy the 'parent'

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Unity auto adds this on prefabs

loud matrix May 5, 2020, 4:59 PM

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God, a day into writing a AI system in ECS and I'm tempted to drop DOTs for a few years. Found some "resources2 on the topic that are just hilariously bad but praised no end just for existing.

wide fiber May 5, 2020, 4:59 PM

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Ok thanks

mint iron May 5, 2020, 5:03 PM

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anyone know if physics collider CalculateDistance returns a negative if its inside the collider?

wide fiber May 5, 2020, 5:08 PM

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I am making an authoring to automatically link (LinkedEntityGroup) all the children of a GameObject to the GameObject with this Authoring script.

How can I get all the children (GameObject) from an authoring component? If a child has already been converted, will I miss it in the list of children?

mystic mountain May 5, 2020, 5:13 PM

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@mint iron pretty sure it does, using it for my cc

radiant sentinel May 5, 2020, 5:14 PM

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hi, why i cant define icomponentdata as structure

📎 unknown.png

mystic mountain May 5, 2020, 5:14 PM

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@mint iron I'm using MaxDistance = 0 on ColliderDistanceInput, and then simply moving out with normal * - distance

radiant sentinel May 5, 2020, 5:15 PM

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i have not changed code, it is package code

wide fiber May 5, 2020, 5:16 PM

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@radiant sentinel IComponentData is an Interface

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Why are you setting it as a class

storm ravine May 5, 2020, 5:16 PM

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@wide fiber it's both. class and struct. Class for storing managed data per entity

radiant sentinel May 5, 2020, 5:16 PM

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yes i know, but i cant make struct with icomp.. interface

wide fiber May 5, 2020, 5:16 PM

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@storm ravine ah ok

radiant sentinel May 5, 2020, 5:19 PM

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@wide fiber @storm ravine look at this refer

📎 unknown.png

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really? its struct and i don't want convert to string :/

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why unity want kill me with upgrades

wide fiber May 5, 2020, 5:21 PM

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Sorry, IComponentData Is an interface, not a struct* (I know the difference between interface, struct and class but I got confused)

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What are you trying to do?

radiant sentinel May 5, 2020, 5:22 PM

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i want add my component to an entity

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my component is struct and i cant add struct to entity

wide fiber May 5, 2020, 5:22 PM

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Wtf

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Wtf

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mint iron May 5, 2020, 5:23 PM

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@mystic mountain thanks, i am trying to do point contains tests on colliders that are not loaded in the physics system. and of course DistanceQueries class is private, FML

radiant sentinel May 5, 2020, 5:24 PM

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@wide fiber yes i know that but its not work because it is struct not a class

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today i have presentation and i cant believe this. i should be die or present some damaged packages

stiff skiff May 5, 2020, 5:26 PM

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The packages are fine, you're using the wrong function overload

warped trail May 5, 2020, 5:27 PM

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does this code compile?

dawn badge May 5, 2020, 5:28 PM

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So I switched from JobSystem to SystemBase and after changing OnUpdate in the Systems I get this weird error at runtime:

InvalidProgramException: Invalid IL code in Ioe.Systems.CollisionSystem/Ioe.Systems.<>c__DisplayClass_OnUpdate_LambdaJob1:OriginalLambdaBody (Unity.Transforms.Translation&,Ioe.Components.EnemyComponent&): IL_0008: stfld     0x0400000c

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I can provide the trace if you would like..

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Switched to latest preview for Entities and HybridRenderer

radiant sentinel May 5, 2020, 5:31 PM

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@stiff skiff wrong overload? i have not changed entities package source code, but it is different from my last project

warped trail May 5, 2020, 5:32 PM

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@radiant sentinel does your code compile?

storm ravine May 5, 2020, 5:33 PM

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Show your MovementData @radiant sentinel

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I'm cooking, and looking only by one eye

radiant sentinel May 5, 2020, 5:33 PM

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@warped trail yes , function is different from last versions, i have degraded package but it is different at new package too, i have cleared cache and my appdata packages to re download, but it is different :/

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@storm ravine

📎 unknown.png

stiff skiff May 5, 2020, 5:34 PM

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@radiant sentinel change it to dstManager.AddComponentData<MovementData>(entity, new MovementData());

storm ravine May 5, 2020, 5:35 PM

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It’s not required

stiff skiff May 5, 2020, 5:35 PM

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I think it is

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The function has an overload for T : class , so you might have to enforce the type like this

storm ravine May 5, 2020, 5:36 PM

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AddComponentData will work and work without explicit generic type declaration if you put struct

radiant sentinel May 5, 2020, 5:36 PM

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the problem fixed, i have copied my last project packages cache to new one but i know this problem happen for other one, i think they changed source code

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@stiff skiff yes but its not true because you cant add class to jobs

stiff skiff May 5, 2020, 5:37 PM

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You're not adding class to jobs

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you're adding a component to an entity

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which, since more recent versions, can be a class instead of a struct

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public bool AddComponentData<T>(Entity entity, T componentData) where T : struct, IComponentData
public static void AddComponentData<T>(this EntityManager manager, Entity entity, T componentData) where T : class, IComponentData

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These both exist now

radiant sentinel May 5, 2020, 5:38 PM

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@stiff skiff its mean i can implement componentData as class?

stiff skiff May 5, 2020, 5:38 PM

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The latter being behind an #if !UNITY_DISABLE_MANAGED_COMPONENTS

storm ravine May 5, 2020, 5:38 PM

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You can implement icd as class

warped trail May 5, 2020, 5:38 PM

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yes you can, but you can't use it in jobs 😅

wide fiber May 5, 2020, 5:38 PM

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@wide fiber yes i know that but its not work because it is struct not a class
@radiant sentinel I've read you've fixed the problem but it should work both with class and structs

stiff skiff May 5, 2020, 5:38 PM

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You can't use it in jobs, and a lot of the API's dont actually support them

wide fiber May 5, 2020, 5:40 PM

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If a raycast starts inside a collider, will that collider be considered?

radiant sentinel May 5, 2020, 5:40 PM

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oops, its mean rider cant detect where : struct overload

warped trail May 5, 2020, 5:40 PM

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if his code compiles then it is problem with ide🙂

stiff skiff May 5, 2020, 5:42 PM

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Its a bit of a weird thing, because normally overloading a function on generic type isn't supported. But it seems to work through making an an extension method

storm ravine May 5, 2020, 5:45 PM

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IDE works fine

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I'm on rider

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And it detect overloads properly

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For example

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📎 unknown.png

radiant sentinel May 5, 2020, 5:47 PM

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pricebase is struct?

storm ravine May 5, 2020, 5:47 PM

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Yes

radiant sentinel May 5, 2020, 5:47 PM

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😭 ok thanks

storm ravine May 5, 2020, 5:47 PM

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📎 unknown.png

radiant sentinel May 5, 2020, 5:48 PM

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thank you

loud matrix May 5, 2020, 5:48 PM

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I'm very tempted to write my entire prototype in monobehaviours just to see how it actually performs without DOTs, but god am I deep on the sunk cost fallacy right now. I don't think I could handle it running fine without DOTs.

grim walrus May 5, 2020, 6:18 PM

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I've been doing some testing any it seems like the new Shadow Caster 2D component from the URP 2D renderer stuff doesn't work in GameObject to Entity conversion yet, does anyone know when that will work?

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@storm ravine Is there no 2D physics with ECS at the moment? What is a work around?

mint iron May 5, 2020, 6:24 PM

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@storm ravine would write his own 2D physics engine

grim walrus May 5, 2020, 6:25 PM

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@mint iron He wrote his own physics engine?

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For ECS?

mint iron May 5, 2020, 6:25 PM

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probably 😄 hes written everything else

opaque ledge May 5, 2020, 6:25 PM

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lmao

storm ravine May 5, 2020, 6:26 PM

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Well I wrote not completely 2D, it's 2.5D 😄

dawn badge May 5, 2020, 6:26 PM

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I ended up figuring out my issue. Luckily trying any and all approaches ended up working out 🤣

storm ravine May 5, 2020, 6:26 PM

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Main collisions in XZ space (unit-unit, unit-building, unit-environment)

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But height counts

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for arrows

grim walrus May 5, 2020, 6:26 PM

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So I should write my own physics engine then?

storm ravine May 5, 2020, 6:26 PM

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stones from catapults etc.

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So I should write my own physics engine then?
@grim walrus Depends

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if you fine with that (collision not so hard thing in 2D)

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All depends on what you wan't

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only hard body collision - elementary, but if you need water physics in 2D, springs, soft body collision and etc. I will be a bit harder (but not imposible ofcourse)

grim walrus May 5, 2020, 6:30 PM

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@storm ravine I only need hard body collision

storm ravine May 5, 2020, 6:30 PM

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Well you on Tiny?

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If on tiny they have 2D physics module

grim walrus May 5, 2020, 6:30 PM

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I need networking so I can't use Tiny

storm ravine May 5, 2020, 6:31 PM

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But hard body collision you can implement yourself

grim walrus May 5, 2020, 6:31 PM

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I've been planning on using Mirror for networking

storm ravine May 5, 2020, 6:31 PM

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hard body collision itself - simple thing, write your BVH implementation and that's all 🙂 Or

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You can use Unity DOTS Physics for BVH

grim walrus May 5, 2020, 6:32 PM

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What's BVH 😓

storm ravine May 5, 2020, 6:32 PM

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Bounding Volume Hierarchy

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BVH tree

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approach of space portioning like octree

grim walrus May 5, 2020, 6:33 PM

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Ok

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Another quick question - ECS works in WebGL, right?

storm ravine May 5, 2020, 6:33 PM

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ECS itself should

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not sure about jobs, you can read forum, I remember couple of threads about that

grim walrus May 5, 2020, 6:35 PM

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Ok

loud matrix May 5, 2020, 7:23 PM

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I'm pretty sure browser hardware acceleration can't be threaded.

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Would be easy to test though

vagrant surge May 5, 2020, 7:54 PM

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it cant

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webasm cant do muiltithreading

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there are some tihngs that would allow for it, but the model is restrictive to a huge degree, so its worthless for games

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its multithreading its more akin to something like forking a side-process on windows/linux

bold pebble May 5, 2020, 8:24 PM

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@grim walrus I messed around with DOTS physics a bit and found that I can do 2D by restricting the degrees of freedom, velocities and positions of all objects so that they stick to a 2D plane. It's kind of hacky but seems to work with simple cases. To restrict all objects to the XY plane I set up the Inertia Tensor to this:

📎 unknown.png

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@grim walrus Further I have a "Physics2dSystem" which makes sure that there is no (numerically induced) drift in the restricted axes: https://pastebin.com/pHjrBHwf

Pastebin

[C#] using Unity.Entities; using Unity.Mathematics; using Unity.P...

storm ravine May 5, 2020, 8:27 PM

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webasm cant do muiltithreading
@vagrant surge https://developers.google.com/web/updates/2018/10/wasm-threads

Google Developers

WebAssembly Threads ready to try in Chrome 70 | Google Developers

WebAssembly thread support has shipped in Chrome 70 under an origin-trial.

ripe hawk May 5, 2020, 10:00 PM

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Anyone here ever tried combining DOTS with any AR platform yet?

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As a newbie, that's make me curious tbh :3

loud matrix May 5, 2020, 10:54 PM

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Just recreated my quick little test in Game objects and ... yeah ok so it does need ECS. I think I need to break out the whiteboard to plan out how to make GOAP ish style AI.

ocean tundra May 5, 2020, 11:00 PM

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@loud matrix What are you trying to test

loud matrix May 5, 2020, 11:02 PM

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I was just testing 1000 entities / 1000 game objects with full motion flight controls as a stress test, in the end only one will be doing the flight with all the rest AI controlled but their logic will be more complex so it was just me seeing if I really did need ECS for this game idea.

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And hoooo boy will I

mint iron May 5, 2020, 11:03 PM

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whatever floats your goap!

loud matrix May 5, 2020, 11:03 PM

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How long have you been sitting on that one?

mint iron May 5, 2020, 11:04 PM

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just came up with it now 🙂

ocean tundra May 5, 2020, 11:05 PM

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@loud matrix Sounds good. I've seen even low numbers seem to benefit from ECS, and i much prefer its programming model.

Have you figured out how to do AI in ECS, I prototyped it a while ago but was more of a job/task system

loud matrix May 5, 2020, 11:07 PM

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I'm still trying to work out how, not in the best head space the last few days (weeks, month or even year) 👏 👏 👏 👏 so I'm not really able to focus on it properly. I might just build more of the framework around the game and come back to agent AI later

dawn badge May 5, 2020, 11:08 PM

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Well if schedule parallel I would imagine a mutex or a thread safe dictionary?

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but then you can't use refs

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so nvm

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ughgugh

loud matrix May 5, 2020, 11:09 PM

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I did have some ideas around storing a array of possible components on my agents and a list of their data and have a master agent system decide what one to kick into action at a given time. But not really thought it through further than that.

dawn badge May 5, 2020, 11:09 PM

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ah that's neat

loud matrix May 5, 2020, 11:09 PM

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to somewhat emulate GOAP

dawn badge May 5, 2020, 11:09 PM

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so regular Run() then have a par system fire after the "master"

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that has just updated some component data

ocean tundra May 5, 2020, 11:10 PM

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@loud matrix Have you seen unitys new AI Planner? that is meant to be DOTS compatiable in a few magic unity months

loud matrix May 5, 2020, 11:10 PM

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Not heard of it at all, they released much info on it?

ocean tundra May 5, 2020, 11:11 PM

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Na theres not much, a gameobject preview (https://forum.unity.com/forums/ai-navigation-previews.122/)

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@dawn badge Why do you think you need a thread safe dictionary? What are you trying to do?

Also theres the Native Collections which can be wirtten to via threads (Native Hash Map is a dictionary)

dawn badge May 5, 2020, 11:13 PM

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yea NativeCollections is what I thought of

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but like I said nvm since you can't pass refs from Mono objects into a par job

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but maybe coroutines can be utilized and a mutex wait after the ForEach

ocean tundra May 5, 2020, 11:14 PM

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again what are you trying to do? Can you remove the monobehaviour? covert into components?

dawn badge May 5, 2020, 11:15 PM

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storing information about locations on a grid to cast rays

ocean tundra May 5, 2020, 11:15 PM

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oh yea you can definitly put those in a native hash map

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or even a native list

dawn badge May 5, 2020, 11:16 PM

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yea so far a small generic list seems to be plenty fast

ocean tundra May 5, 2020, 11:16 PM

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yea, have a public native list in your "gather/find locations" system

dawn badge May 5, 2020, 11:16 PM

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yea might swap to native list. Do I have to worry about destroying the native list? the size will always be the same, I'll just choose when to render

ocean tundra May 5, 2020, 11:17 PM

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and your raycast system get that system and then loop over them

dawn badge May 5, 2020, 11:17 PM

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Whoa you can pull info from systems?

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I need to read more

ocean tundra May 5, 2020, 11:17 PM

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yea you do, in the system on create you make the list and set its size, then in on destory call dispose

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World.GetExistingSystem<SYSTEM>()

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also see the CommandBufferSystems (EndSimulationCommandBufferSystem) 2 secs ill find the doc

dawn badge May 5, 2020, 11:18 PM

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I just currently have a single Mono sharing a few things between systems but if I can grab info from other systems and schedule par jobs I will get much better perf

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oh great thank you so much this gives me hope

ocean tundra May 5, 2020, 11:20 PM

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https://docs.unity3d.com/Packages/com.unity.entities@0.10/manual/entity_command_buffer.html

loud matrix May 5, 2020, 11:20 PM

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I really need to learn more use cases for GetExistingSystem

dawn badge May 5, 2020, 11:20 PM

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yea that just helped me a bunch

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.CreateCommandBuffer().ToConcurrent()

😍

grim walrus May 5, 2020, 11:21 PM

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Well making progress with optimization

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Got 100,000 shapes at 90 FPS

dawn badge May 5, 2020, 11:22 PM

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are you generating the whole level?

grim walrus May 5, 2020, 11:22 PM

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Yes

dawn badge May 5, 2020, 11:22 PM

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nice!

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parsing from json or something?

ocean tundra May 5, 2020, 11:22 PM

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So im planning on a fog of war system(s) 2 systems will be gathering all data up into mutihashmaps<POS,LIST<ENTITIES>> and then another will be depending on those

grim walrus May 5, 2020, 11:22 PM

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@dawn badge No just randomly placing stuff

dawn badge May 5, 2020, 11:22 PM

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cool that works too

grim walrus May 5, 2020, 11:22 PM

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I'm using 3D physics for 2D shapes though for now

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But I'm going to need to make my own physics engine soon

dawn badge May 5, 2020, 11:22 PM

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ah that is neat @ocean tundra

grim walrus May 5, 2020, 11:23 PM

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I only need circle colliders

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Any resources for learning how to code that would be welcome

dawn badge May 5, 2020, 11:23 PM

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Oh a circle collision is quite simple for 2D

ocean tundra May 5, 2020, 11:23 PM

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@grim walrus Circle colliders are just distance checks 🙂

dawn badge May 5, 2020, 11:23 PM

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    private static bool isColliding(float aX, float aY, float bX, float bY) {
      var radius = 1f;

      var deltaX = aX - bX;
      var deltaY = aY - bY;

      return ((deltaX * deltaX) + (deltaY * deltaY)) <= (radius * radius);
    }

ocean tundra May 5, 2020, 11:23 PM

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oh very nice

dawn badge May 5, 2020, 11:24 PM

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you can pass in a different radius if you would like (I am about to have to for fireballs and such)

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but this works so well and is very simple once you learn it

loud matrix May 5, 2020, 11:24 PM

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Just adding the physics engine and tying it to a single entity ate up 1/2 my fps, so i decided I'll just make my own very basic one

dawn badge May 5, 2020, 11:24 PM

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of course if all you need are circle colliders 🙂

ocean tundra May 5, 2020, 11:25 PM

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yea like half my frame time is physics 😦

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and all im currently using it for is mouse pick raycasts

loud matrix May 5, 2020, 11:27 PM

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The physics package seems to need a lot more work, I just need basic gravity free impact collisions (that would be damped anyway to stop players doing 360s) and basic raycasting so it's way more than I actually need.

dawn badge May 5, 2020, 11:27 PM

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2D or 3D?

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2D you can probs do it, 3D might end up with the same perf because math lol

ocean tundra May 5, 2020, 11:28 PM

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Yea but i would rather use it now and suffer the performance pain and be able to easy update to latest. As im sure its being worked on

dawn badge May 5, 2020, 11:28 PM

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yea that's fair, full control is full control

loud matrix May 5, 2020, 11:30 PM

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3D for me, but I'll be chucking the game world up so should be light weight

ocean tundra May 5, 2020, 11:31 PM

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yea im 3d too, i guess it wouldnt be that hard to chunk the physics as we can make our own physics worlds and step them as we like

loud matrix May 5, 2020, 11:31 PM

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the advantage I have is my objects will generally be 10km away from each other :p

ocean tundra May 5, 2020, 11:31 PM

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Thats actually a really good idea, especially if you can figure out if a chunk needs a update and only update then. Does physics already have a static collider list that dosnt update?

loud matrix May 5, 2020, 11:32 PM

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not sure, I was having so may issues with the performance and just getting a version that worked with my other packages I thought I'd rather have the control

ocean tundra May 5, 2020, 11:32 PM

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@loud matrix wow 10 k is HUGE

loud matrix May 5, 2020, 11:33 PM

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Space sim game, I still need to decide what factor i need to scale the numbers up by to not fry the transform component

ocean tundra May 5, 2020, 11:35 PM

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Very cool, another optmization is you could split into a few different worlds based on distance and update those at different ticks

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EG i have Server and Client, my server world updates every 200ms and the client world every update

loud matrix May 5, 2020, 11:36 PM

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I did not know you could do that, I was gonna split them for loading only as it would take a player days real world to travel between systems

ocean tundra May 5, 2020, 11:36 PM

#

yea theres something like (DefaulWorldCreate.CreateWorld)

#

then you can loop over all the sysetms it finds, setup any values you need

#

finally you call world.Update whenever you want it to tick

#

the worst part is it dosnt yet show correctly in the entity debugger 😦 so i dont see my systems, just my entities)

loud matrix May 5, 2020, 11:38 PM

#

I'll have to keep that in mind for once I get AI working

ocean tundra May 5, 2020, 11:38 PM

#

https://docs.unity3d.com/Packages/com.unity.entities@0.10/api/Unity.Entities.DefaultWorldInitialization.html

loud matrix May 5, 2020, 11:38 PM

#

I may just do a full simulation of the solar systems orbital mechanics till i work out AI, somehow that will be a lot easier.

#

Have each planet auto generate the Lagrange points and generate the worlds there :p

#

players of a retro style space sim will appreciate the slightly elliptical orbits that play out in real time

dawn badge May 5, 2020, 11:40 PM

#

this is such a dumb question but with

ref Translation translation

Can I flip the texture using this or do I need to figure that out in:

Graphics.DrawMesh

ocean tundra May 5, 2020, 11:40 PM

#

@dawn badge Theres a scale component somehwere, i think you could flip the scale in that

#

but your drawing manually with Graphics Draw?

dawn badge May 5, 2020, 11:41 PM

#

nvm i think I can with var rotation = Quaternion.identity; and just do Quaternion.Euler(0, 180, 0);

#

yep

loud matrix May 5, 2020, 11:41 PM

#

What are you flipping the texture for?

dawn badge May 5, 2020, 11:41 PM

#

walking left vs. right lol

loud matrix May 5, 2020, 11:41 PM

#

ahh

ocean tundra May 5, 2020, 11:41 PM

#

not sure if drawing manually, if your drawing using the localtoworld matrix then i think the scale or rotation should effect it

dawn badge May 5, 2020, 11:41 PM

#

or I could just load in a different one..

#

I would just a have a lot of repeating assets lol

loud matrix May 5, 2020, 11:42 PM

#

Modifying scale may introduce issues later down the road, so you'd likely be better off modifying the Material component

dawn badge May 5, 2020, 11:43 PM

#

You can draw with LocalToWorld?

ocean tundra May 5, 2020, 11:43 PM

#

yea thats a good point, you could probably use a custom shader and pass in a property

dawn badge May 5, 2020, 11:43 PM

#

why am I learning all of this rn

loud matrix May 5, 2020, 11:43 PM

#

how ... how are you drawing without it?

ocean tundra May 5, 2020, 11:43 PM

#

😛 i spotted it in the fourms

dawn badge May 5, 2020, 11:43 PM

#

to be fair this is me learning C# and Unity

#

so trial by fire huh

ocean tundra May 5, 2020, 11:43 PM

#

use https://docs.unity3d.com/Packages/com.unity.entities@0.10/api/Unity.Transforms.LocalToWorld.html

loud matrix May 5, 2020, 11:44 PM

#

I to am a god damned idiot who decided DOTs was a good place to start 🙂

ocean tundra May 5, 2020, 11:44 PM

#

and you can take that matrix value and pass it into graphics.draw

dawn badge May 5, 2020, 11:44 PM

#

oh I don't have "sprites"

loud matrix May 5, 2020, 11:45 PM

#

In that case Modify the Material in the RenderMesh coponent

dawn badge May 5, 2020, 11:45 PM

#

ok makes sense

ocean tundra May 5, 2020, 11:45 PM

#

theres a better way,, but i cant find it :/

#

https://forum.unity.com/threads/per-instance-material-params-support-in-entities-0-2.782207/

Unity Forum

Per-instance material params support in Entities 0.2!

For some reason this was not in the release notes, but I've managed to get per-instance material params working in the 0.2 release. This is similar in...

#

got it

#

oh i think it requires the hybrid renderer

dawn badge May 5, 2020, 11:51 PM

#

I should have it

#

I'll check that out after seeing if I can do Par jobs with the fact that I can pull in other system data

ocean tundra May 5, 2020, 11:51 PM

#

but if your rendering with graphics.draw it probably dosnt get the same magic

#

@dawn badge also see this (https://docs.unity3d.com/Packages/com.unity.entities@0.10/manual/ecs_job_dependencies.html)
if you have systems depending on the ouput of other systems

dawn badge May 5, 2020, 11:54 PM

#

oh neat, I am currently using [UpdateAfter(typeof(Type))]

#

but this is good to know

ocean tundra May 5, 2020, 11:55 PM

#

yea, Unfortuanlly that only effects when OnUpdate is called, it dosnt do anything to dependancies

dawn badge May 5, 2020, 11:55 PM

#

oh within the block.. interesting

ocean tundra May 5, 2020, 11:55 PM

#

and even tho a job is scheduled after another one if theres no dependancy it will try to run at the same time, even if they are using the same data

grim walrus May 6, 2020, 12:08 AM

#

I'm getting this in console

#

InvalidOperationException: object is not initialized or has already been destroyed

#

It is gone now for no reason

dawn badge May 6, 2020, 12:09 AM

#

oh..

grim walrus May 6, 2020, 12:09 AM

#

Don't know why it got there in the first place

dawn badge May 6, 2020, 12:10 AM

#

maybe depending on how many objects something is not created on time?

grim walrus May 6, 2020, 12:10 AM

#

Dunno

ocean tundra May 6, 2020, 12:10 AM

#

@grim walrus oh god that

#

are you using those new enter play mode settings?

grim walrus May 6, 2020, 12:12 AM

#

I don't htink so

ocean tundra May 6, 2020, 12:13 AM

#

Project Settings > Editor

#

📎 unknown.png

#

i get that exception all the time, but only on my 2nd play

#

somewhere im not cleaning up correctly between plays

#

if i change code it causes domain reload and everything is fine

grim walrus May 6, 2020, 12:15 AM

#

@ocean tundra Should I check either of those?

ocean tundra May 6, 2020, 12:15 AM

#

is yours like that first?

#

and do you get that exception on your 2nd play

grim walrus May 6, 2020, 12:16 AM

#

@ocean tundra Sometimes but now I'm not getting it anymore

ocean tundra May 6, 2020, 12:18 AM

#

hmmm if your not getting it on your 2nd or after run its probably something else

grim walrus May 6, 2020, 12:18 AM

#

Now I'm getting it again

ocean tundra May 6, 2020, 12:18 AM

#

every time you press play, stop and play again?

grim walrus May 6, 2020, 12:19 AM

#

No

#

Just happens randomly

ocean tundra May 6, 2020, 12:20 AM

#

😦 not sure sorry, when i was getting that i was able to reproduce every time

grim walrus May 6, 2020, 12:20 AM

#

@ocean tundra Quick question, how do you get a rigidbody to work with ECS?

ocean tundra May 6, 2020, 12:20 AM

#

I didnt, i use Unity.Physics

grim walrus May 6, 2020, 12:21 AM

#

Oh ok let me try that

#

So it is for DOTS specifically

ocean tundra May 6, 2020, 12:21 AM

#

yup

#

its not super performant yet, but its still WIP

grim walrus May 6, 2020, 12:29 AM

#

@ocean tundra

not super performant
just tested it, go 10,000 entities colliding at 150FPS

#

If that's not performant, I don't know what is

ocean tundra May 6, 2020, 12:29 AM

#

oh wow,, ill admit i havnt really tested it very hard

grim walrus May 6, 2020, 12:29 AM

#

Wait actually 20000

ocean tundra May 6, 2020, 12:30 AM

#

man thats amazing to hear

#

in a build?

grim walrus May 6, 2020, 12:30 AM

#

@ocean tundra no in editor

#

Aren't build results usually worse?

#

*better

ocean tundra May 6, 2020, 12:30 AM

#

na build should be WAYYYYY better

#

Editor has a bunch of safety checks to catch us dumb devs making a mistake 😛

#

@grim walrus are you trying a build? I'd be interested in how many you can get

zinc plinth May 6, 2020, 12:52 AM

#

ENABLE_UNITY_COLLECTIONS_CHECKS is our lord and savior lul

grim walrus May 6, 2020, 2:30 AM

#

@ocean tundra I'm targetting WebGL, checking now

ocean tundra May 6, 2020, 2:31 AM

#

I didnt realise web gl was a valid target, thought there was threading issue there?

grim walrus May 6, 2020, 2:38 AM

#

I'm getting this

#

Failed running /home/elnu/Documents/Unity/2019.3.12f1/Editor/Data/il2cpp/build/deploy/net471/il2cpp.exe --convert-to-cpp --dotnetprofile="unityaot" --compile-cpp --libil2cpp-static --platform="WebGL" --architecture="EmscriptenJavaScript" --configuration="Release" --outputpath="/home/elnu/Documents/Unity projects/gunna.io/Assets /../Temp/StagingArea/Data/Native/build.bc"

#

Maybe it is because I'm on linux...?

ocean tundra May 6, 2020, 2:41 AM

#

I didn't think that ECS worked on webgl

grim walrus May 6, 2020, 2:41 AM

#

Oh nonono

#

Really?

ocean tundra May 6, 2020, 2:42 AM

#

I just havn't read/heard anything about it. and havnt looked into it

#

but based on what i know of the job system and burst im unsure they can run in a browser

#

I would love to be proved wrong 😛

grim walrus May 6, 2020, 5:29 AM

#

@ocean tundra Tested it earlier

#

I got an entity with the DOTS physics system to fall in Webgl

#

So I'd say that's a success

#

Also-

#

Can you get a normal GameObject to interact with DOTS physics?

#

Or would you have to go via an entity

#

Another question-

#

What's the state of networking in Unity tiny?

#

Is it possible/planned?

modern pine May 6, 2020, 6:12 AM

#

hi! Recently installed the DOTSSample pack and have been trying to set up a capture point. I noticed that there is a sample CapturePoint prefab and some corresponding code but I haven't been able to get it working.

#

I set game mode to 'assault', registered the prefab in the PrefabAssetRegistry, and generated ghost code but the point does not appear to respond in-game.

#

also tried to see if I could retrieve the entity with this code in the GameModeAssault.cs:

#

but it returns 0.

#

any ideas? has anyone successfully implemented capture points?

wide fiber May 6, 2020, 7:29 AM

#

Can you get a normal GameObject to interact with DOTS physics?
@grim walrus I don't think normal GameObjects interact with DOTS physics.. why are you using a normal GameObject?

inland root May 6, 2020, 7:29 AM

#

@ocean tundra I think DOTS for Web uses Burst compiler (and maybe other tools) to generate wasm / WebAssembly, no javascript

wide fiber May 6, 2020, 7:30 AM

#

but based on what i know of the job system and burst im unsure they can run in a browser
@ocean tundra yes it works, unity Tiny should support burst on the web (I don't know how jobs are managed but ok)

inland root May 6, 2020, 7:30 AM

#

https://forum.unity.com/threads/webgl-build-with-entities-ecs-not-working-burst-related-too-maybe.811275/#post-5561224

Unity Forum

WebGL Build with Entities/ECS not working (Burst related too maybe)

Unity 2019.3.0f5
I have a scene with some GameObjects with ConvertToEntity. Basic stuff, some cubes and some spheres. The spheres have unity dots...

#

official word from a Unity dev that they recommend using project tiny for DOTS on Web and that Hybrid renderer/ GPU instancing should hypothetically work on Chrome and Firefox because they support WebGL 2.. but won't work on Safari because they don't or didnt support WebGL 2 at the time of writing only 1 though I know Apple is finally working on adding WebGL 2 support (several years late.)

wide fiber May 6, 2020, 9:10 AM

#

Is a class called "InputSystem" available in dots? I've seen it in a tiny project, I didn't know that there is an input class for DOTS (I was using old Input)

lusty otter May 6, 2020, 9:16 AM

#

Input System is not related to DOTS iirc, it’s a separate package.

wide fiber May 6, 2020, 9:35 AM

#

Ah ok
Anybody here is using unity Tiny?

Do you know if I can directly use some DOTS code inside a unity Tiny project?

I've seen a few videos on YT and instead of for example:
Time.DeltaTime
they use:

World.TinyEnvironment().FrameDeltaTime```

#

It would be cooler if I could use the systems that I am using inside my DOTS project also in a Unity Tiny project, I don't want to change all these little things

warped trail May 6, 2020, 9:45 AM

#

you can use Time.DeltaTime in Tiny

#

but you can't use anything from UnityEngine

#

and InputSystem is Tiny's stuff

wide fiber May 6, 2020, 11:21 AM

#

Ok ty

warped trail May 6, 2020, 11:25 AM

#

oh, and you can't use it in editor😅

wide fiber May 6, 2020, 11:26 AM

#

What do you mean?

#

Yeah I know that to play the game it opens a web page

wide fiber May 6, 2020, 12:12 PM

#

When will we get an entity editor in Unity DOTS?

Like in Unity Tiny, I can directly create entities, not GameObjects that then will be converted to entities (the current version of DOTS)

opaque ledge May 6, 2020, 12:15 PM

#

soon

wide fiber May 6, 2020, 12:23 PM

#

ok

storm ravine May 6, 2020, 12:45 PM

#

Not soon

dull copper May 6, 2020, 12:51 PM

#

@wide fiber you mean the OLD unity tiny with dots mode that got scrapped already?

#

and yeah, not soon at all

wide fiber May 6, 2020, 1:10 PM

#

Ah ok

#

So to use pure ECS the only way is by writing code?

#

No editor to make things easier?

dull copper May 6, 2020, 1:22 PM

#

no

opaque ledge May 6, 2020, 1:22 PM

#

New platforms package

#

### Added
- New component `ClassicCodeStrippingOptions`, exposes Classic's StripEngineCode and ManagedStrippingLevel values.
- New class `RunTargetBase`, can be used to specify deploy targets for pipelines.

### Changed
- Updated `com.unity.properties` package version to `1.2.0-preview`.
- Updated `com.unity.properties.ui` package version to `1.2.0-preview`.
- Updated `com.unity.serialization` package version to `1.2.0-preview`.
- Classic build pipelines will pick development players when ClassicBuildProfile Configuration is set to Debug or Development.

### Removed
- Removed obsolete class `BuildSettings`.
- Removed obsolete interfaces `IBuildSettingsComponent` and `IRunStep`.
- Removed obsolete properties `flags`, `description` and `category` on class `BuildStepAttribute`, as well as the nested `Flags` enum.
- Removed obsolete property `BuildSettings` on class `BuildPipelineResult` and `RunStepResult`.
- Removed obsolete property `Scenes` on class `SceneList`.

dull copper May 6, 2020, 1:22 PM

#

currently they want you to use the conversion workflow

wide fiber May 6, 2020, 1:23 PM

#

:(

dull copper May 6, 2020, 1:24 PM

#

if you want "pure" as in no gameobjects on final build, look for recent tiny examples

#

they have different systems for Tiny 2D and Tiny 3D

wide fiber May 6, 2020, 1:24 PM

#

Can I use
MyRaycastHit.entity
Instead of:
physicsWorldSystem.Bodies[MyRaycastHit.RigidbodyIndex].Entity

opaque ledge May 6, 2020, 1:26 PM

#

does RaycastHitResult have a field "entity" ?

#

i think it only gives you RigidbodyIndex, it doesnt give you Entity

#

Btw, i kinda hit a point where.. i fail to see how to improve my game, like what to do, what kind of mechanics i should implement etc..

#

i am kinda sad rn

wide fiber May 6, 2020, 1:27 PM

#

Yes, it has an Entity field that "returns" an entity type (it is a Get, not a function but ok)

dull copper May 6, 2020, 1:29 PM

#

yeah, I'll just revert back...

📎 unknown.png

opaque ledge May 6, 2020, 1:29 PM

#

0.4 works fine for me 👀

dull copper May 6, 2020, 1:29 PM

#

I think it fails for me since it can't autoupgrade the properties package

#

it's pretty common with PM

#

something else got the dependency with lower version installed before

opaque ledge May 6, 2020, 1:31 PM

#

RaycastHit indeed has Entity field, i guess its much better to just to use it instead thru RigidbodyIndex

dull copper May 6, 2020, 1:31 PM

#

I can try forcing both properties and serialiation I suppose

opaque ledge May 6, 2020, 1:31 PM

#

i have never seen that Entity property before, is it a new thing 🤔

dull copper May 6, 2020, 1:32 PM

#

it's just pain to upgrade when you have tons of manually installed things on your manifest

wide fiber May 6, 2020, 1:32 PM

#

@opaque ledge ok

dull copper May 6, 2020, 1:33 PM

#

I also see that my verbose project name was on that screenshot 😄

#

I usually keep things simple, but then add more things to the name if I have variants per Unity versions or different renderers

#

and yeah, after updating these manually, I got it to launch the editor:

    "com.unity.properties": "1.2.0-preview",
    "com.unity.serialization": "1.2.0-preview",```

#

do note that I have platforms.windows installed here, it installs platforms and platforms.desktop as well

#

the build conf asset thing didn't seem to work anymore on platforms 0.3 anymore without the windows package

#

talking of builds

#

is there any easy way to get the build logs?

#

I have a faint memory they exist somewhere but I can't find anything obvious just by looking around

#

I kinda miss that from unreal and basically every other game engine

opaque ledge May 6, 2020, 1:39 PM

#

hmm, there was a new api about build stuff, i kinda forgot tho

wide fiber May 6, 2020, 1:40 PM

#

So is it safe to upgrade "Platforms" to 0.4?

dull copper May 6, 2020, 1:40 PM

#

oh wait, it does output these to editor.log

#

I'd just love to have these on build dir directly

#

or in project folder somewhere

opaque ledge May 6, 2020, 1:40 PM

#

it works for me @wide fiber

dull copper May 6, 2020, 1:41 PM

#

@opaque ledge ah, thanks. I see that there's a package named "Build Report Inspector" on PM

opaque ledge May 6, 2020, 1:41 PM

#

oh yeah 😄

dull copper May 6, 2020, 1:44 PM

#

I think the editor log with full logging enabled still gives more of the data I wanted

#

the report inspector just gives the highlights basically

#

well, and what files made it to the build etc

storm ravine May 6, 2020, 1:47 PM

#

So to use pure ECS the only way is by writing code?
@wide fiber Conversion Workflow, Subscenes IS pure DOTS. It's authoring, that you using GO for authoring doesn't make it "not pure"

wide fiber May 6, 2020, 1:48 PM

#

Ok

#

I am trying to get the float2 relative to entity rotation.

I've found on internet that I should multiply the vector by the rotation in eulers, but I don't know how to get the eulers from a quaternion

opaque ledge May 6, 2020, 1:52 PM

#

there is a math.forward() function that gives you forward vector of a quaternion, maybe that can help ?

wide fiber May 6, 2020, 1:52 PM

#

I'll check

opaque ledge May 6, 2020, 1:56 PM

#

i checked the Entity Property btw, it indeed works, so no need for RigidbodyIndex

coarse turtle May 6, 2020, 1:58 PM

#

https://twitter.com/aras_p/status/1258030236219985922 ooh this is interesting 👀
we'd get disposable ref structs in C# 8

Aras Pranckevičius (@aras_p)

Looks like @khyperia, @lucasmeijer and some others have just landed C# 8 support for Unity 2020.2 a12. \o/

wide fiber May 6, 2020, 2:03 PM

#

Sorry I am making a 2d game and math.forward doesn't work..

Basically I have a float2 that holds the position of a point. I have set the float2 to (2, 0), so it is at the right of my player.
If my player rotates, I want to also "rotate" the float2, so it should be always at the right of the player, I don't want it to be static

coarse turtle May 6, 2020, 2:04 PM

#

does the player just flip between left and right for the forward?

#

like in a classic spriterenderer?

wide fiber May 6, 2020, 2:04 PM

#

My player rotates on the Z axis "continuosly"

#

It doesn't flip

storm ravine May 6, 2020, 2:05 PM

#

        /// Rotate <paramref name="point"/> around <paramref name="rotationCenter"/> by <paramref name="degree"/>
        /// </summary>
        /// <param name="point">Point for rotation</param>
        /// <param name="rotationCenter">Point around which <paramref name="point"/> will be rotated</param>
        /// <param name="degree">Rotation degrees amount</param>
        /// <returns>Rotated point position</returns>
        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static float2 GetRotatedPoint(this float2 point, float2 rotationCenter, float degree)
        {
            float radians = math.radians(-degree);
            float2 distance = point - rotationCenter;

            return new float2(math.cos(radians) * distance.x - math.sin(radians) * distance.y + rotationCenter.x,
                math.sin(radians) * distance.x + math.cos(radians) * distance.y + rotationCenter.y);
        }

coarse turtle May 6, 2020, 2:05 PM

#

Oh I see, you might want to just rotate the point along a pivot

wide fiber May 6, 2020, 2:05 PM

#

He can be at 0.1°, at 0.2°, 0?3°...

#

Yeah

coarse turtle May 6, 2020, 2:06 PM

#

What eizenhorn posted works 🙂

wide fiber May 6, 2020, 2:06 PM

#

Ok ty

storm ravine May 6, 2020, 2:07 PM

#

What eizenhorn posted works 🙂
@coarse turtle Of course it works

mystic mountain May 6, 2020, 3:00 PM

#

Anyone have any thoughts or ideas how to handle states in the DOTS world? I saw that the DOTSSample used child entities as "abilities" where one is the death state, not sure if it's the approach I want to go with.

mint iron May 6, 2020, 3:06 PM

#

its probably useful to approach it from how the data needs to be used, if you need to iterate on every ability when they exist, they could be either a separate entity or just a component on the parent. A factor would be if you wanted to be able to bulk delete the entities versus being forced to add/remove the component (because you can't delete the parent), and also the cost of linking/updating the parent/child relationship. Having a seperate entity means you're not splitting your main objects' into two archetypes - depends if you want that to happen. @storm ravine thoughts?

storm ravine May 6, 2020, 3:37 PM

#

First of all, which genre?

mystic mountain May 6, 2020, 3:39 PM

#

@mint iron Hmm I see. Something like first person, action crew game.

#

But I'm thinking of having it on all sorts of things that can spawn/despawn be broken etc.

#

Not just on the player, as they have in DOTS Sample.

storm ravine May 6, 2020, 3:43 PM

#

There is 3 approaches which I use in RTS. One case is component on entity like tag for state - Dead unit, Hungry unit etc, Building affected by some modifier (like food produce boost). Second is component with enum state, for example pathfinding status. And both - when component itself it's state and has substate in enums. Third independent entity which has "reference" to parent\child entities (depends on case it can be component or buffer)

mystic mountain May 6, 2020, 3:45 PM

#

Hmm, I see. And those three variants are three different contexts? You can't have variant 1 interact with variant 3?

vagrant surge May 6, 2020, 3:45 PM

#

its just different ways of coding it, with their own bonus-cons

#

you can also store a component with a function pointer

#

enum state is absolute fastest to toggle, for example

#

but its slightly slower to iterate as it iterates all and has the switch

storm ravine May 6, 2020, 3:48 PM

#

Hmm, I see. And those three variants are three different contexts? You can't have variant 1 interact with variant 3?
@mystic mountain Well 1 and 2 can coexist as I mentioned

#

All depends on data

#

how often you change it

#

which archetypes size

#

HOW you change that data (batches or not)

#

And of course on context

#

For example if I have Hungry state for unit, it doesn't make sense store it on different entity 🙂

warped trail May 6, 2020, 3:50 PM

#

but abilities are not stored in player in DOTS sample🤔

storm ravine May 6, 2020, 3:50 PM

#

Because this exact entity Hungry and if I will do something with that entity (like lowering speed as example) I'll doo it exact on same entity because it's marked as "Hey I AM Hungry, process me, a have every thing about me)

#

but abilities are not stored in player in DOTS sample🤔
@warped trail I speak about exact context mentioned above

vagrant surge May 6, 2020, 3:51 PM

#

because dots sample is kinda crappy in so many ways

#

also in ecs networking, adding and removing components is not supported

#

so child entities are neccesary for a lot of things

mint iron May 6, 2020, 3:53 PM

#

the key point there i think is that, if its on the same entity you will have easy access to the other needed data when the state changes.

vagrant surge May 6, 2020, 3:54 PM

#

yup. But on the case of abilities, not even that much

#

they can be fairly atomic, in a way

storm ravine May 6, 2020, 3:55 PM

#

Yes they can

vagrant surge May 6, 2020, 3:55 PM

#

plus you have multiple of them, so you cant put it as component

storm ravine May 6, 2020, 3:55 PM

#

Same like a weapon

#

plus you have multiple of them, so you cant put it as component
@vagrant surge why so, buffers exact for that 🙂

vagrant surge May 6, 2020, 3:56 PM

#

but buffers arent as flexible

storm ravine May 6, 2020, 3:56 PM

#

We using buffers for stacking buffs\debuffs 🙂

mint iron May 6, 2020, 3:56 PM

#

yeah if i had 15 weapon types, 15 movement types, 10 whatever else types, and tried to add/remove each as a component it would be a nasty fragmented mess

vagrant surge May 6, 2020, 3:56 PM

#

of course if you can have your ability state as an union... then you good

storm ravine May 6, 2020, 3:57 PM

#

but buffers arent as flexible
@vagrant surge what you mean by that? 🙂

#

If you have same ability and doesn't matter you have 2 or 3 this ability on entity, it's still same ability, and buffers cover that case 🙂

#

If they different in their base - well it will be different abilities

#

With different type 🙂

mint iron May 6, 2020, 3:58 PM

#

would that be like an FSM state component with union fields for each? like awareness component, might have a type enum and 3 fields that union different structs and those contain the actual behavior (Alerted, Idle etc) and switch on the type in component to pick the right one?

vagrant surge May 6, 2020, 3:59 PM

#

@storm ravine mostly commenting about separated abilities

#

of different kinds

#

so i was mostly thinking of more of a "AbilitySystemComponent" type of thing,where it holds array of all abilities affecting the entity

storm ravine May 6, 2020, 4:04 PM

#

Well that not flexible for me 🙂 You exclude query filtering at that point (huge reason for me against that), you always work with that array when you only need for example operate on specific ability 🙂 For me that approach feels much OOP with inheritance and interfaces when you have, for example, IAbility and different abilities implement that 🙂

vagrant surge May 6, 2020, 4:05 PM

#

something i have seen was to use function pointers

#

but

#

you have a general "MovementState"component or similar

#

and it has a literal virtual void update(entity ID this)

#

and then grabs the data needed from components

#

movementstate comp is basically a pute interface

storm ravine May 6, 2020, 4:07 PM

#

And that is OOP way which you truing to mimic in DOD 🙂 But of course no one can stop you and it valid and can be used with function pointers

vagrant surge May 6, 2020, 4:07 PM

#

yeah thas basically OOP on top of the ecs

storm ravine May 6, 2020, 4:09 PM

#

Well conclusion of all top posts @mystic mountain analyse your data, choose what you will do with that data and try appropriate approach for you 🙂

#

yes that very "common" answer

#

But its as its is 🙂

#

All depends

#

and in DOD land that depends very valuable, because it's data driven and data defines what can do 🙂

vagrant surge May 6, 2020, 4:12 PM

#

definitely. You have all this choices on how to do it, vs the "typical" oop state pattern, so just select whatever works best for your use case

storm ravine May 6, 2020, 4:16 PM

#

If you have some, not so big, amount of "abilities" my personal recommendation - use components as tag\storage for data state (Dead, Hungry, etc.), I tied some sort of one component which store simple states (simple enums before function pointers ages, for different citizen states, like builder, porter, woodcutter etc.) and in the end I dropped that and decided use defined type for different citizen work states and code become much "cleaner" and intuitive, and feels like real data flow. Plus more built in helpers like filtering\change filtering and querying which is very big boost, nothing can be faster in processing performance than not processing things 🙂 For big amount of abilities\states, maybe much convenient for you be function pointers approach. All up to you (no up to data)

zinc plinth May 6, 2020, 4:18 PM

#

so now you have components like WoordCutterJob that has all the state regarding the job of the npc ?

#

(couldn't completly understand what you said)

storm ravine May 6, 2020, 4:24 PM

#

Not exactly, but close, I have system which search targets for every worker types in parallel (like woodcutters searching trees and dirtywood storage), and depends on current substate (i mentioned them above), that substates very atomic like HaveResource\Haven't (and in veeery rare cases that can be enum flag) which exist or not in association to current entity (one more bonus, you can operate on different independent states in parallel without concurrency, because it's absolutely different data subset which not aliasing with each other) decide - Search Tree or Storage, that all. Same for storages. It can be one object - Storage, but depends on type of resource (different components - WoodStorage, StoneStorage etc.) it will be included in query for woodcutters of for miners etc.

#

With that way as I mentioned above we can reduce processing of many things, in addition with any spatial portioning it become very fast and intuitive to process.

mint iron May 6, 2020, 4:27 PM

#

@vagrant surge something like this you were referring to? https://gist.github.com/jeffvella/57da54567c7127be4fff7e124a97f5f8

Gist

gist:57da54567c7127be4fff7e124a97f5f8

GitHub Gist: instantly share code, notes, and snippets.

storm ravine May 6, 2020, 4:27 PM

#

This is approach to which I rewrote our citizens and resources systems when we decided (month ago) rewrite game core and use addressables and completely remove all old roots which was from before-DOTS ages when we started developing that game.

grim walrus May 6, 2020, 4:41 PM

#

@wide fiber I need to get networking to work, I am using Mirror

#

I was going to make the player objects GameObjects so they could network/ use input

#

But then again I need to network my entities too

mystic mountain May 6, 2020, 4:55 PM

#

@storm ravine Cool thanks! (thanks all who put in their input)
Maybe I should just not take it as such a finished product, but in the DOTS Sample they seem to take little regard to not using causing sync points by playbacking entitybuffer outside of the set sync points of begin/end. I've currently tried to only use the set syncpoitns + 1, causing workarounds with how I handle stuff etc, I thought this was more or less a hard rule for perf?

vagrant surge May 6, 2020, 4:58 PM

#

it depends on how ham you go. The sync points harm multithreading, but if your game code goes fast enough with 1 core, thats not even a problem

wide fiber May 6, 2020, 5:52 PM

#

@grim walrus ah ok.. I don't know, I've never used networking "seriously", so yeah

grim walrus May 6, 2020, 6:12 PM

#

@bold pebble Hey, your Physics2dSystem is giving me errors

#

I'm getting

#

Assets\Scripts\Physics2DSystem.cs(22,72): error CS1061: 'quaternion' does not contain a definition for 'ToEuler' and no accessible extension method 'ToEuler' accepting a first argument of type 'quaternion' could be found (are you missing a using directive or an assembly reference?)

#

Assets\Scripts\Physics2DSystem.cs(23,15): error CS0023: Operator '.' cannot be applied to operand of type 'void'

#

Not sure what is the issue

opaque escarp May 6, 2020, 7:11 PM

#

What's the preferred way of handling procedural meshes in DOTS? I don't think using RenderMesh is appropriate since it's Shared, and all the meshes would be unique...

coarse turtle May 6, 2020, 7:12 PM

#

currently I do a managed ComponentData with a Mesh field in it

#

and temporary buffers to do all my mesh vertex manipulations

opaque escarp May 6, 2020, 7:12 PM

#

how do you managed ComponentData?

coarse turtle May 6, 2020, 7:13 PM

#

class MeshContainer : IComponentData, IEquatable<MeshContainer> { public Mesh m; public bool Equals(MeshContainer other) { ... } public override int GetHashCode() { ... } }

opaque escarp May 6, 2020, 7:13 PM

#

oh what I thought IComponentData could only be a struct

coarse turtle May 6, 2020, 7:13 PM

#

they introduced managed component datas sometime ago - they cant be accessed by jobs tho

opaque escarp May 6, 2020, 7:14 PM

#

still that should work for me, thanks

pliant pike May 6, 2020, 7:36 PM

#

I don't suppose anyone knows why a physics object would not be displayed, when using Dynamic or Kinematic(I'm pretty sure its not falling through the floor, and I do have the hybrid renderer) 🤔

tardy locust May 6, 2020, 7:36 PM

#

Did you remember to put something on it to render?

pliant pike May 6, 2020, 7:39 PM

#

yeah I think so, it renders when its static just not with the others

tardy locust May 6, 2020, 7:39 PM

#

Did you try and and check the position of the object in the inspector?

grim walrus May 6, 2020, 7:39 PM

#

Is Vector2 the best way of storing vectors in a IComponentData?

tardy locust May 6, 2020, 7:39 PM

#

See if it's moving at a gazzilion miles an hour for some reason?

#

float2 @grim walrus

#

Practically identical but it uses the mathematics package

grim walrus May 6, 2020, 7:40 PM

#

@tardy locust What's the advantage of that?

tardy locust May 6, 2020, 7:41 PM

#

I am pretty sure it's better packed

#

But I could be wrong. Either way, float2-4 instead of vector2-4

pliant pike May 6, 2020, 7:41 PM

#

it doesn't appear to be flying around all values are normal

tardy locust May 6, 2020, 7:41 PM

#

It should also be said that your components (like transform and whatnot) are using these structs

#

not vectors

grim walrus May 6, 2020, 7:46 PM

#

@tardy locust Ok noob question here

tardy locust May 6, 2020, 7:46 PM

#

@pliant pike Hm. And you are sure this only happens when you apply the physics? What if you remove that component?

grim walrus May 6, 2020, 7:46 PM

#

What is the GetComponent equivalent in ECS?

tardy locust May 6, 2020, 7:46 PM

#

Er

grim walrus May 6, 2020, 7:46 PM

#

Or am I thinking about this wrong

tardy locust May 6, 2020, 7:47 PM

#

You should have an entity already

#

And then you get the data, from that entity

#

Which is to say, your entity is just a number. The engine then goes and fetches all data that's tied to that entity

grim walrus May 6, 2020, 7:47 PM

#

using Unity.Entities;
using Unity.Jobs;
using Unity.Mathematics;
using Unity.Transforms;

public class InputSystem : SystemBase
{
    protected override void OnUpdate()
    {
        float deltaTime = Time.DeltaTime;

        Entities.ForEach((ref InputComponent inputComponent) =>
        {
            
        });
    }
}

#

Here's what I have

#

How do I apply the data in the inputComponent to the transform component?

tardy locust May 6, 2020, 7:47 PM

#

Well this will automatically look for InputComponents and then you process the reference to those

#

Well

#

You could just do

grim walrus May 6, 2020, 7:48 PM

#

Do I have to put some other value into the ForEach?

tardy locust May 6, 2020, 7:48 PM

#

ref InputComponent inputComponent, ref Transform transform

#

This way you get all entities that have both components on them

grim walrus May 6, 2020, 7:48 PM

#

Ahh so you can get multiple references

#

That makes a lot of sense

#

Thank you

pliant pike May 6, 2020, 7:48 PM

#

I think maybe because it was because the physics objects were a subobject of an empty object

#

they were going haywire it just didn't show for some reason

tardy locust May 6, 2020, 7:49 PM

#

Right

grim walrus May 6, 2020, 7:51 PM

#

Also what's the difference between .Schedule(), .ScheduleParallel(), and .Run()?

winter depot May 6, 2020, 7:52 PM

#

https://docs.unity3d.com/Packages/com.unity.entities@0.10/api/Unity.Entities.SystemBase.html

#

To execute a ForEach construction, you have three options:

ScheduleParallel() -- schedules the work to be done in parallel using the C# Job system. Each parallel job instance processes at least one chunk of entities at a time. In other words, if all the selected entities are in the same chunk, then only one job instance is spawned.

Schedule() -- schedules the work to be done in a single job (no matter how many entities are selected).

Run() -- evaluates the entity query and invokes the lambda function for each selected entity immediately on the main thread. Calling Run() completes the system Dependency JobHandle before running, blocking the main thread, if necessary, while it waits for those jobs to finish.```

#

Is anyone else getting this error spamming their console after finishing running after updating to b8? InvalidOperationException: object is not initialized or has already been destroyed Unity.Entities.ComponentSystemBase.CheckedState () (at Library/PackageCache/com.unity.entities@0.10.0-preview.6/Unity.Entities/ComponentSystemBase.cs:333)

grim walrus May 6, 2020, 8:01 PM

#

@winter depot I was getting that error randomly the other day too

#

It happens randomly, couldn't figure out why. It wasn't preventing anything from running though

#

As for .Schedule(), .ScheduleParallel(), and .Run() I think I understand better now

#

But what are the use cases for each of them?

#

Does it depend on priority...?

ocean tundra May 6, 2020, 8:03 PM

#

Performance i think

grim walrus May 6, 2020, 8:03 PM

#

So it would change depending on if you have only a few/a lot of a certain Component to iterate through?

ocean tundra May 6, 2020, 8:03 PM

#

Schedule as much as possiable and if you have loads of entities use schedule parallel

grim walrus May 6, 2020, 8:04 PM

#

Ok

low tangle May 6, 2020, 8:04 PM

#

it usually is based on the complexity of the job

winter depot May 6, 2020, 8:04 PM

#

Wait I thought parallel does single if it only needs

ocean tundra May 6, 2020, 8:04 PM

#

I only use Run when i have to have something on the main thread or im interacting with classes

low tangle May 6, 2020, 8:04 PM

#

sometimes I forget to put parallel

grim walrus May 6, 2020, 8:04 PM

#

So player object use .Schedule(), and if you have thousands of world objects use .ScheduleParallel()?

low tangle May 6, 2020, 8:05 PM

#

if your job is simple enough and might have a lot parallel

winter depot May 6, 2020, 8:05 PM

#

I always .ScheduleParallel()

low tangle May 6, 2020, 8:05 PM

#

you should try to yeah

#

its a lot like the older jobforeach

grim walrus May 6, 2020, 8:05 PM

#

So I should use .ScheduleParallel() for everything...?

winter depot May 6, 2020, 8:05 PM

#

If you can I would say yes

low tangle May 6, 2020, 8:05 PM

#

if you can yes, it wont hurt anything

grim walrus May 6, 2020, 8:05 PM

#

Alright then I'll do that. Thanks for the help

ocean tundra May 6, 2020, 8:06 PM

#

yea that makes sense, I guess i need to change all mine now 😛

winter depot May 6, 2020, 8:06 PM

#

But unless its 100% pure ecs you will need WithoutBurst().Run() for things

low tangle May 6, 2020, 8:06 PM

#

yeah your gonna run into lots of cases where you need Run()

ocean tundra May 6, 2020, 8:06 PM

#

yea its super annoying

grim walrus May 6, 2020, 8:06 PM

#

@low tangle Wait so I should use .Run() if there are a lot of something?

low tangle May 6, 2020, 8:06 PM

#

also, some job chains you might be hashing, then using that data 1:1 with a small pool of entities

grim walrus May 6, 2020, 8:06 PM

#

I'm still rather confused

low tangle May 6, 2020, 8:06 PM

#

Run is main thread

winter depot May 6, 2020, 8:06 PM

#

Only thing not ECS in my project is UI

low tangle May 6, 2020, 8:06 PM

#

think monobehaviour stuff

grim walrus May 6, 2020, 8:06 PM

#

...

#

I guess I'll do parallel?

low tangle May 6, 2020, 8:07 PM

#

you want to keep everything you can in ecs plain old data components

#

yes

winter depot May 6, 2020, 8:07 PM

#

Do parallel

low tangle May 6, 2020, 8:07 PM

#

let me make a example

grim walrus May 6, 2020, 8:08 PM

#

Now I'm getting this

#

...\Assets\Scripts\InputSystem.cs(12,9): error DC0023: Entities.ForEach uses managed IComponentData InputComponent&. This is only supported when using .WithoutBurst() and .Run().

safe lintel May 6, 2020, 8:09 PM

#

if your job is simple enough run is faster than scheduling even a single worker job

grim walrus May 6, 2020, 8:09 PM

#

When doing parallel

ocean tundra May 6, 2020, 8:09 PM

#

so thats a case where you are forced to use Run. inside that code your calling a class somewhere

low tangle May 6, 2020, 8:09 PM

#

unless your n is high enough

#

like everything in ecs it depends

#

you want to be building in habits for success though

#

not over analyzing every single system for max performance

grim walrus May 6, 2020, 8:10 PM

#

This is my code

#

using Unity.Entities;
using Unity.Jobs;
using Unity.Mathematics;
using Unity.Transforms;

public class InputSystem : SystemBase
{
    protected override void OnUpdate()
    {
        float deltaTime = Time.DeltaTime;

        Entities.ForEach((ref InputComponent inputComponent, ref Translation translation) =>
        {
            translation.Value.x += inputComponent.input.x;
            translation.Value.y += inputComponent.input.y;
        }).ScheduleParallel();
    }
}

#

What am I doing wrong?

ocean tundra May 6, 2020, 8:11 PM

#

Show us InputComponent

#

pretty sure it will be public class InputComponent : IComponentData

grim walrus May 6, 2020, 8:11 PM

#

😓 yeah

#

That should be switched to struct right

ocean tundra May 6, 2020, 8:12 PM

#

make it a struct

#

yea

low tangle May 6, 2020, 8:12 PM

#

yes

#

it should be plain old data, not a object

grim walrus May 6, 2020, 8:12 PM

#

I'm so used to classes I automatically wrote class haha

ocean tundra May 6, 2020, 8:12 PM

#

and also if your not changing anything in InputComponent (its readonly) change ref to in

grim walrus May 6, 2020, 8:12 PM

#

using Unity.Entities;
using Unity.Mathematics;

[GenerateAuthoringComponent]
public struct InputComponent : IComponentData
{
    public float2 input;
}

#

So this is better?

ocean tundra May 6, 2020, 8:12 PM

#

yup

low tangle May 6, 2020, 8:12 PM

#

I've got some macros you might like

#

https://discordapp.com/channels/489222168727519232/497874303463850004/705536768333840474

ocean tundra May 6, 2020, 8:13 PM

#

and when changing ref's to in's i think in's go last

low tangle May 6, 2020, 8:13 PM

#

if your using vs that is

#

yeah it goes managed, ref, in, no keywords iirc

#

if it red squiggles just move it

#

ez

hollow sorrel May 6, 2020, 8:15 PM

#

do entitydebugger timings only include main thread? or how long the jobs took across all threads

#

and if so is there a way to check how long it took across all threads

#

trying to make debug tool for how long entire world took to update including all threads

grim walrus May 6, 2020, 8:16 PM

#

Oops forgot to multiply by deltaTime that's why it was going so fast lol

warped trail May 6, 2020, 8:16 PM

#

entitydebugger shows only main thread

ocean tundra May 6, 2020, 8:17 PM

#

the profiler somehow manages to get the job run times tho

hollow sorrel May 6, 2020, 8:17 PM

#

hmm

ocean tundra May 6, 2020, 8:17 PM

#

@hollow sorrel i would be very interested in the answer when you figure it out. i have a few custom worlds and getting individual timings would be great

low tangle May 6, 2020, 8:18 PM

#

they dont

#

not till the new one comes out

#

heres that simple contrived example

#

📎 unknown.png

#

struct MyPlayerInput : IComponentData
{
    public float H;
    public float V;
    public float MoveSpeed;
}

struct MoveForward : IComponentData
{
    public float2 Value;
}

struct MyPosition : IComponentData
{
    public float2 Value;
    public float Rotation;
}

class TestExampleSystemFactoryWorkerSystem : SystemBase
{
    protected override void OnUpdate()
    {
        //there will only ever be one in my game
        Entities
            .ForEach((Entity ent, ref MyPosition pos, ref MyPlayerInput input) =>
            {
                float deltaX = math.clamp(input.H, -1, 1) * Time.DeltaTime * input.MoveSpeed;
                float deltaY = math.clamp(input.V, -1, 1) * Time.DeltaTime * input.MoveSpeed;

                pos.Value += new float2 { x = deltaX, y = deltaY };
            }).Run();

        //there will be anywhere from 1k -> 100k
        Entities
            .ForEach((Entity ent, ref MyPosition pos, ref MoveForward forward) =>
            {
                pos.Value += forward.Value * Time.DeltaTime;
            }).ScheduleParallel();

    }
}

#

since there is only ever one player, it makes more 'sense' to .Run() it

#

and since there is 1000 - 10000 of the other entities you would want to ScheduleParallel() it
which you can do because this is a very simple foreach

#

gotta remember to not overcomplicate examples

grim walrus May 6, 2020, 8:21 PM

#

One more noob question.
Structs cannot have their values changed after being created, right?

low tangle May 6, 2020, 8:21 PM

#

they can have them changed

grim walrus May 6, 2020, 8:21 PM

#

Oh

#

Wait never mind I was being an idiot

low tangle May 6, 2020, 8:21 PM

#

might be thinking of const? or readonly?

#

they are value types if thats something you've heard of

eager jungle May 6, 2020, 8:22 PM

#

Hi guys, I was wondering if someone could tell what is the good reason for using blobassets over simple entity+cdfe<readonly> for immutable data?

grim walrus May 6, 2020, 8:22 PM

#

@low tangle It was just because VS glitched

low tangle May 6, 2020, 8:22 PM

#

gotcha

ocean tundra May 6, 2020, 8:23 PM

#

I think the use case for blobassets are things that will NEVER change, like animation data

grim walrus May 6, 2020, 8:23 PM

#

For some reason the struct parameters weren't coming up

#

Also is using Input.GetAxis the way to get input in ECS?

#

Or is there a whole new way

low tangle May 6, 2020, 8:23 PM

#

thats the most basic way thats totally fine to use

grim walrus May 6, 2020, 8:23 PM

#

@low tangle That

#

is weird because it gives me errors

#

using UnityEngine;
using Unity.Entities;
using Unity.Mathematics;
using Unity.Transforms;

public class InputSystem : SystemBase
{
    protected override void OnUpdate()
    {
        float deltaTime = Time.DeltaTime;

        Entities.ForEach((ref InputComponent inputComponent, ref Translation translation) =>
        {
            inputComponent.input.x = Input.GetAxisRaw("Horizontal");
            inputComponent.input.y = Input.GetAxisRaw("Vertical");
            translation.Value.x += inputComponent.input.x * deltaTime;
            translation.Value.y += inputComponent.input.y * deltaTime;
        }).ScheduleParallel();
    }
}

low tangle May 6, 2020, 8:24 PM

#

ah

#

just like you did the deltaTime?

#

you have to do that for most things you need to bring into ecs

grim walrus May 6, 2020, 8:24 PM

#

...Assets\Scripts\InputSystem.cs(14,13): Burst error BC1033: Loading a managed string literal is not supported

#

Oooh

low tangle May 6, 2020, 8:24 PM

#

so cache the Input.Get's above into floats

grim walrus May 6, 2020, 8:24 PM

#

So I have to cache them into a variable?

#

I get it

low tangle May 6, 2020, 8:24 PM

#

yep

grim walrus May 6, 2020, 8:25 PM

#

Just curious, why?

low tangle May 6, 2020, 8:25 PM

#

you need to think of the ForEach inside code as a totally different world

#

it might run on the main thread, or any number of other threads

#

so to make it simpler unity's compiler asks you to make it into a local variable, so they can be sure you don't modify it somewhere else while it runs.

storm ravine May 6, 2020, 8:26 PM

#

You should Run for main threaded work which can't be done on worker threads. If code can be processed on worker thread better is use Schedule (if it can't be parallelized) because of freeing worker thread, and not interrupt dependency chain for readers, if that code can be parallelized without RC and memory aliasing - choose ScheduleParallel

low tangle May 6, 2020, 8:26 PM

#

this also allows them to copy it simpler to the other threads when you use Schedule() it

#

thats the wordy technical reason to use run vrs s or sp yeah

grim walrus May 6, 2020, 8:28 PM

#

Are you talking to me? All this stuff about threads is going right over my head 😭

low tangle May 6, 2020, 8:28 PM

#

is the ForEach part simple enough?

#

I can break it down a bit more

grim walrus May 6, 2020, 8:29 PM

#

Yes it is

low tangle May 6, 2020, 8:29 PM

#

alright

grim walrus May 6, 2020, 8:29 PM

#

But after that worker threads and all that I was a bit lost

low tangle May 6, 2020, 8:29 PM

#

yeah dont worry

grim walrus May 6, 2020, 8:30 PM

#

Yeay! My ECS movement worked!

low tangle May 6, 2020, 8:30 PM

#

eizenhorn has been doing this since ecs came out

grim walrus May 6, 2020, 8:30 PM

#

I'm so happy

#

@low tangle lol

low tangle May 6, 2020, 8:30 PM

#

he knows all the internals and what not

grim walrus May 6, 2020, 8:30 PM

#

Now time to test to see if it works on WebGL

low tangle May 6, 2020, 8:30 PM

#

ThumbsupA

lusty otter May 6, 2020, 8:33 PM

#

Not ECS but just Job system, has anyone checked on multithread related things on mobile?

storm ravine May 6, 2020, 8:33 PM

#

Hi guys, I was wondering if someone could tell what is the good reason for using blobassets over simple entity+cdfe<readonly> for immutable data?
@eager jungle Because of memory. Blobs stored in preallocated memory block (200mb per scene) and not consume your chunks memory. Your BlobAssetReference in simple words - just pointer (fixed 8byte size) to some piece of that memory, thus instead of store all that data on entity and reduce count of entities in chunk (because that data will take it size from chunk memory per entity) you just store pointer to that memory. It's just excluding data duplication, reduce memory usage, freeing chunks for important things

low tangle May 6, 2020, 8:33 PM

#

both work on android fine @lusty otter

lusty otter May 6, 2020, 8:33 PM

#

Sure, but I meant more about ScheduleParallel vs Run stuffs.

low tangle May 6, 2020, 8:34 PM

#

same reasons you would use either

lusty otter May 6, 2020, 8:34 PM

#

Scheduling overhead, and generally how many worker threads we have.

low tangle May 6, 2020, 8:34 PM

#

its the same as pc, number of cores - 1

lusty otter May 6, 2020, 8:35 PM

#

My job stuffs isn't very expensive and I start to think maybe do some optimizations on that, rather than always do schedule parallel I'll just do run for low count jobs.

low tangle May 6, 2020, 8:35 PM

#

and again, the scheduling overhead is part of the job system unity wrote so other than os quirks (its linux) its going to be the same

coarse turtle May 6, 2020, 8:36 PM

#

@lusty otter you can limit the # of worker threads if you choose to, I wrote an option to do that on mobile

low tangle May 6, 2020, 8:36 PM

#

yeah theres that one static count you can set

opaque escarp May 6, 2020, 8:36 PM

#

psuong after using the managed ComponentData for the mesh, how do you get the render system to pick up on it?

grim walrus May 6, 2020, 8:37 PM

#

drum roll

#

It works in WebGL!

ocean tundra May 6, 2020, 8:37 PM

#

@coarse turtle Can you limit the number of worker threads per World?

low tangle May 6, 2020, 8:37 PM

#

📎 unknown.png

#

no

coarse turtle May 6, 2020, 8:37 PM

#

@opaque escarp You can use BatchRendererGroup or Graphics.CommandBuffer to issue instructions to render things on screen

opaque escarp May 6, 2020, 8:38 PM

#

ty

lusty otter May 6, 2020, 8:38 PM

#

I'm not looking to limit the worker threads, just wondering if there's a "simple rule of thumb" that I can do to determine ScheduleParallel vs Run.

eager jungle May 6, 2020, 8:38 PM

#

thanks @storm ravine. Not sure to get the data duplication thing though. If we create only one entity holding the data, and this single entity is being referenced everywhere it is needed (like the blobasset reference would be), is that really a problem? is that really different?

storm ravine May 6, 2020, 8:38 PM

#

thanks @storm ravine. Not sure to get the data duplication thing though. If we create only one entity holding the data, and this single entity is being referenced everywhere it is needed (like the blobasset reference would be), is that really a problem? is that really different?
@eager jungle That entity will take whole chunk - 16kb

low tangle May 6, 2020, 8:38 PM

#

again its pretty much the same as pc, except intuitively since we have more lower powered cores on mobile I'd assume you would want to be more multi core happy

coarse turtle May 6, 2020, 8:39 PM

#

@ocean tundra what @low tangle said

low tangle May 6, 2020, 8:39 PM

#

since your going for a slow vsync and idle the rest of the time, divide and finish the work faster

eager jungle May 6, 2020, 8:39 PM

#

@storm ravine that makes a lot more sense now, thank you

lusty otter May 6, 2020, 8:39 PM

#

Does it cause more energy consumption, as in battery dies faster?

low tangle May 6, 2020, 8:39 PM

#

basically rush to idle

#

well if your not vsynced sure

#

but why you want to crank out 1000fps on mobile is beyond me

lusty otter May 6, 2020, 8:39 PM

#

Both iOS and Android force vsync afaik.

#

You can't even go beyond it even if you tried.

low tangle May 6, 2020, 8:40 PM

#

pretty sure android unity let me

#

but your probably right

#

either way, basically what I said before

#

vsync idle should be the majority of your games cpu time

lusty otter May 6, 2020, 8:40 PM

#

Hmm okay, so I guess no point in looking into this and just let it run on multi core.

ocean tundra May 6, 2020, 8:53 PM

#

Is anyone using multiple Worlds OR breaking up processing across frames (eg ComponentSystemGroup1 runs on odd frames and ComponentSystemGroup2 runs on even frames)?

storm ravine May 6, 2020, 9:03 PM

#

We using multiple worlds for saving\loading game, for creating big amount of entities on worker thread (EcxlusiveEntityTransaction)

low tangle May 6, 2020, 9:09 PM

#

noticed this popped up in entities 9

#

https://cdn.discordapp.com/attachments/106228327869620224/707679606429450260/unknown.png

#

gonna have to pull up my other words again now that I can actually transfer small amounts easy

ocean tundra May 6, 2020, 9:10 PM

#

Any issues? Thats not my exact usecase tho, I'm wanting to break apart my server world into server core (this is all the network communication, Unity.transport. and that sort of stuff) which runs every frame, and my server simulation worlds (these are simulating the rts stuff, units/battles/buildings all the goodness) and it runs every 200ms but offset so they dont all run at the same time (as there can be many of these)

low tangle May 6, 2020, 9:10 PM

#

for my server updates I threw them all into a fixedupdate utility recently

#

I'm in the middle of a update to the core server loop right now though

ocean tundra May 6, 2020, 9:11 PM

#

yea i currently just have my whole server world ticking inside fixed update

low tangle May 6, 2020, 9:11 PM

#

📎 unknown.png

ocean tundra May 6, 2020, 9:11 PM

#

Ohh where is that?

#

im guessing NetCode?

low tangle May 6, 2020, 9:12 PM

#

📎 unknown.png

#

its new in ecs 8 iirc

#

7 actually

#

📎 unknown.png

#

its much cleaner than the overloading the group method

ocean tundra May 6, 2020, 9:13 PM

#

Ooo very nice

low tangle May 6, 2020, 9:13 PM

#

that would blow up and spit out some stupid leaks and callstacks for errors

ocean tundra May 6, 2020, 9:13 PM

#

its a shame it dont have a tick world option

#

but i could always write one

low tangle May 6, 2020, 9:13 PM

#

well you still have to tick the world but

#

you can tick it every frame

#

and only get a hz you set

dull copper May 6, 2020, 9:14 PM

#

they still don't have interpolation option on the entities side

#

only on the netcode

low tangle May 6, 2020, 9:14 PM

#

yeah, but I already wrote that ages ago in my game

ocean tundra May 6, 2020, 9:14 PM

#

sweet

#

yea i have my own interpolation stuff

dull copper May 6, 2020, 9:14 PM

#

well, no issues then 🙂

ocean tundra May 6, 2020, 9:14 PM

#

im also not using NetCode

dull copper May 6, 2020, 9:14 PM

#

but I still feel they should have it out of the box

low tangle May 6, 2020, 9:14 PM

#

the only thing I really dislike about the multi world stuff is that you can't really dupe the unity scene

ocean tundra May 6, 2020, 9:15 PM

#

im just not using scenes

low tangle May 6, 2020, 9:15 PM

#

need the physics scene loaded for my server world

ocean tundra May 6, 2020, 9:15 PM

#

😛

low tangle May 6, 2020, 9:15 PM

#

UGC is all old unity physics that I can't really convert 100% of the time

ocean tundra May 6, 2020, 9:16 PM

#

i've been lucky so far and dont have any old unity stuff

low tangle May 6, 2020, 9:16 PM

#

yeah, keep it that way if you can

ocean tundra May 6, 2020, 9:16 PM

#

but when i want effects im sure ill need to learn how to merge

low tangle May 6, 2020, 9:16 PM

#

I have to do so much animation and ik stuff I'm always stuck in old unity

ocean tundra May 6, 2020, 9:16 PM

#

yea i just have T pose units atm 😛

#

waiting untill unity.animation works

#

looks so bad tho

#

with the game object conversion pipeline, can we attach a old monobehavior/gameobject?

low tangle May 6, 2020, 9:18 PM

#

pretty sure you can

ocean tundra May 6, 2020, 9:19 PM

#

https://docs.unity3d.com/Packages/com.unity.entities@0.10/api/Unity.Entities.GameObjectConversionUtility.html

#

with that one?

#

im not using sub scenes

coarse turtle May 6, 2020, 9:19 PM

#

You can override GameObjectConversionSystem

#

and add monobehaviors there if you need to 🤔

ocean tundra May 6, 2020, 9:20 PM

#

Sweet

#

will probably have to use that for my Clients, things like particle effects

coarse turtle May 6, 2020, 9:21 PM

#

though I imagine you can use IConvertGameObjectToEntity in a MonoBehaviour too

ocean tundra May 6, 2020, 9:22 PM

#

how do you attach the Monobehaviour/Component

#

also it works with Entity Prefabs?

low tangle May 6, 2020, 9:22 PM

#

I just allways use EntityManager.AddComponentObject()

ocean tundra May 6, 2020, 9:23 PM

#

when i last tried that it didnt copy/instanate component objects

#

tho that was many versions ago

storm ravine May 6, 2020, 9:25 PM

#

Companion workflow

#

If you want attach them at conversion

safe lintel May 6, 2020, 9:30 PM

#

so does that warning of experimental feature still apply to companion gameobjects now(i mean experimental on top of everything being preview already)

#

are you using them in DINO @storm ravine ?

storm ravine May 6, 2020, 9:30 PM

#

Yes, for camera for example

#

For PostProcessingLayer and AudioListener

#

For UI bridge

safe lintel May 6, 2020, 9:32 PM

#

hmm ok

ocean tundra May 6, 2020, 9:33 PM

#

Sweet

#

one last weird question

#

I'm instantiating my prefab, then converting it to a entity and cleaning up the gameobject. I also add the Prefab tag to the new entities. Any idea if that would work with those companion Gameobjects?

coarse turtle May 6, 2020, 9:35 PM

#

https://forum.unity.com/threads/convert-and-inject-game-object-in-prefabs.806382/

Unity Forum

Convert And Inject Game Object in Prefabs

Is there a standard way of instantiating an Entity that has a child with ConvertToEntity-(Convert And Inject Game Object) somewhere in it's hierarchy?...

#

Was just reading that cause I got curious 👀

#

Looks like 5argon answered it

storm ravine May 6, 2020, 9:36 PM

#

It will work and will instantiates with prefabs

ocean tundra May 6, 2020, 9:38 PM

#

Sweet, thanks for the link

coarse turtle May 6, 2020, 9:41 PM

#

Time to give it a try and convert things over 👀

#

lol

ocean tundra May 6, 2020, 9:41 PM

#

Yup

#

if only i wasnt at "work"

#

😛

grim walrus May 6, 2020, 9:58 PM

#

I'm getting this weird error

storm ravine May 6, 2020, 9:59 PM

#

PLEASENO

grim walrus May 6, 2020, 9:59 PM

#

Unexpected exception System.InvalidOperationException: Unable to find type `PlayerMovementSystem+<>c__DisplayClass_OnUpdate_LambdaJob0` from assembly `Assembly-CSharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null

#

It isn't preventing anything from working

#

But it happens regardless

ocean tundra May 6, 2020, 10:00 PM

#

turn burst off and see what it says

grim walrus May 6, 2020, 10:07 PM

#

@ocean tundra That crashed Unity 😐

ocean tundra May 6, 2020, 10:10 PM

#

oh no

#

whats your playermovementsystem?

grim walrus May 6, 2020, 10:10 PM

#

@ocean tundra

using Unity.Entities;
using Unity.Transforms;

public class PlayerMovementSystem : SystemBase
{
    protected override void OnUpdate()
    {
        float deltaTime = Time.DeltaTime;

        Entities.ForEach((ref InputComponent inputComponent, ref StatsComponent statsComponent, ref Translation translation) =>
        {
            translation.Value.x += inputComponent.input.x * statsComponent.movementSpeed * deltaTime;
            translation.Value.y += inputComponent.input.y * statsComponent.movementSpeed * deltaTime;
        }).ScheduleParallel();
    }
}

ocean tundra May 6, 2020, 10:11 PM

#

hmmm apart form ref instead of in it looks ok

grim walrus May 6, 2020, 10:12 PM

#

@ocean tundra Wait what is the deal with ref and in

ocean tundra May 6, 2020, 10:12 PM

#

maybe schedule instead? how many entities is this expected to effect?

grim walrus May 6, 2020, 10:12 PM

#

1 entity

ocean tundra May 6, 2020, 10:12 PM

#

ref = ReadWrite, in = ReadOnly

#

input component and statsComponent are only read, so you get a little pref boost if you make those in

#

and it dosnt update the change version under the hood

#

in (read only) components go last 🙂

humble mason May 6, 2020, 10:25 PM

#

Hi guys, I haven't been keeping up with the dots news for a long while now, I was wondering is UI work possible using dots now or do I still have to make a "hybrid" app using dots for all game mechanics but traditional unity UI?

ocean tundra May 6, 2020, 10:26 PM

#

Still hybrid

#

I'm planning on using the runtime UI Elements (UI Toolkit)

humble mason May 6, 2020, 10:28 PM

#

do you know of any links (guides/documentation/addons) that could help me get started? @ocean tundra

ocean tundra May 6, 2020, 10:29 PM

#

Not really, i just read everything i can from https://forum.unity.com/forums/ui-toolkit.178/

Unity Forum

UI Toolkit

Formerly UIElements
Manual | Tutorial

humble mason May 6, 2020, 10:29 PM

#

thanks a ton, I'll study it too

ocean tundra May 6, 2020, 10:29 PM

#

but you can still use all the existing UI stuff

#

it will probably be easier

#

I just figure im so deep in beta/previews with Entities it dosnt hurt to add more 😛

humble mason May 6, 2020, 10:30 PM

#

u mean just use them the normal way i'm used to?

ocean tundra May 6, 2020, 10:30 PM

#

yup

humble mason May 6, 2020, 10:30 PM

#

ah gotcha

#

should i be aware of any complications arising from trying to make the two methods work together?

ocean tundra May 6, 2020, 10:31 PM

#

i dont know sorry

#

Havn't started on any UI yet for my game

humble mason May 6, 2020, 10:32 PM

#

alright, thank you very much!

#

good luck with your game

ocean tundra May 6, 2020, 10:32 PM

#

thanks you too

opaque escarp May 6, 2020, 10:33 PM

#

is there any way to add a DynamicBuffer to a chunk, in the same way you add ChunkComponentData?

grim walrus May 6, 2020, 10:36 PM

#

@ocean tundra Switching ref to in fixed it so far, thanks for the help!

ocean tundra May 6, 2020, 10:36 PM

#

awesome

#

wonder why it fixed it??

grim walrus May 6, 2020, 10:38 PM

#

@ocean tundra Also I can't see anything for Physics Body in Unity.Physics. Is that Unity.Physics.RigidBody?

ocean tundra May 6, 2020, 10:39 PM

#

its not called rigidbody any more

#

umm i think its PhyiscsCollider and PhysicsVolisity

grim walrus May 6, 2020, 10:40 PM

#

Ahhh I see

ocean tundra May 6, 2020, 10:40 PM

#

https://docs.unity3d.com/Packages/com.unity.physics@0.3/manual/core_components.html

grim walrus May 6, 2020, 10:40 PM

#

So it is componentated into lots of bits

#

(don't know what word to use lol)

ocean tundra May 6, 2020, 10:41 PM

#

yup

#

basicly you can mix and match them too

grim walrus May 6, 2020, 10:41 PM

#

I've noticed that the variables in structs seem to not be camel case

#

Why?

ocean tundra May 6, 2020, 10:41 PM

#

cause evil

grim walrus May 6, 2020, 10:42 PM

#

For example

#

PhysicsVelocity

#

using Unity.Entities;
using Unity.Mathematics;

namespace Unity.Physics
{
    public struct PhysicsVelocity : IComponentData
    {
        public float3 Linear;
        public float3 Angular;
    }
}

#

Is this the way we are supposed to do things now?!?

ocean tundra May 6, 2020, 10:43 PM

#

oh no thats because its public

grim walrus May 6, 2020, 10:43 PM

#

In normal scripts public variables don't have to be capitalized 🤔

ocean tundra May 6, 2020, 10:43 PM

#

c# conding standards are public = CapEveryWord

#

private = notCapFirst or _notCapFirst

#

theres no requirment

#

you do as you like

low tangle May 6, 2020, 10:43 PM

#

fields vrs properties

ocean tundra May 6, 2020, 10:44 PM

#

but unity are trying to follow c# standards a bit better now

low tangle May 6, 2020, 10:44 PM

#

yep

ocean tundra May 6, 2020, 10:44 PM

#

monobehavure is old and evil

grim walrus May 6, 2020, 10:44 PM

#

So in a normal MonoBehaviour you should do MyPublicVariable not myPublicVariable?

#

This is news to me

ocean tundra May 6, 2020, 10:45 PM

#

no i follow c# super hard

#

i never public anything

#

useing private _varibaleName

#

if it needs to be in the inspector is use [SerializeField]

#

if it needs to be seen/used via another scirpt i use public Property {get {retun thing;}}

#

but im still figuring out public Sysems, so far i just use public FieldName;

#

you can do whatever you like 🙂

grim walrus May 6, 2020, 10:47 PM

#

Ok thanks for the explanation

ocean tundra May 6, 2020, 10:47 PM

#

just dont use properties in ecs components

low tangle May 6, 2020, 11:20 PM

#

properties and data hiding sucks public everything :^)

ocean tundra May 6, 2020, 11:47 PM

#

😛 lots of people like that

humble mason May 6, 2020, 11:48 PM

#

we like him because he speaks the truth

ocean tundra May 6, 2020, 11:49 PM

#

its my c# roots not liking it 😛 but with DOTS everything public works

#

and is needed

coarse turtle May 6, 2020, 11:59 PM

#

Hmm - with the hybrid companion gameobjects workflow it's cool that data from entities are copied to the gameObject but is there a way to do the opposite (go -> entity), especially for the TRS matrix? 🤔

#

https://gametorrahod.com/game-object-conversion-and-subscene/ O didn't see 5argon had a blog back a few months ago about this workflow

opaque ledge May 7, 2020, 12:07 AM

#

CopyTransformFromGameobject

#

simply make an authoring component and add that component

coarse turtle May 7, 2020, 12:09 AM

#

Hmm let me check if that's still on the entity

humble mason May 7, 2020, 12:10 AM

#

@opaque ledge what do you mean by authoring component?

opaque ledge May 7, 2020, 12:12 AM

#

You can find it in create menu in assets, ECS -> Authoring Component, its basically a monobehaviour that implements IConvertToEntity interface, which will be run when your gameobject is being converted to entity

humble mason May 7, 2020, 12:12 AM

#

ah thanks! im just now starting with ecs and im trying to take in as much info as i can

opaque ledge May 7, 2020, 12:13 AM

#

👍

#

have you watched CodeMonkey's channel ? good info there for beginners

humble mason May 7, 2020, 12:13 AM

#

saw a couple of his videos back when ecs was still brand new

#

things have come a long way since then and that's why im trying to get into it

#

back then finding readable documentation, easy to understand turotrials etc was pretty hectic for me

#

so i took a break from it

opaque ledge May 7, 2020, 12:15 AM

#

yep, its in much better shape now, you can also check ecs manual, good info there as well, less practical ofc

humble mason May 7, 2020, 12:16 AM

#

thanks for reminding me of him

coarse turtle May 7, 2020, 12:17 AM

#

ah - I guess the companion workflow rejects usage of the CopyTransformFromGameObjectSystem 🤔

opaque ledge May 7, 2020, 12:19 AM

#

well companion works from Entity -> Go tho 😄

coarse turtle May 7, 2020, 12:19 AM

#

Yea lol

#

Well it's not much of a big issue for me, I can always change the logic from entity -> go instead of go -> entity for a few monobehaviors lol

opaque ledge May 7, 2020, 12:20 AM

#

what is your usage case ?

coarse turtle May 7, 2020, 12:20 AM

#

I still had some old rigidbody2d I haven't converted yet - been pushing it off

#

so it just lazily handled some physics for me 😅

opaque ledge May 7, 2020, 12:22 AM

#

ah okay 😄

hollow sorrel May 7, 2020, 12:24 AM

#

is there a way to order a job to complete last (in ecs world), without adding dependencies to all other jobs before it?
trying to check how long it takes to complete a world update, i guess total job time isn't doable but total sequential time would be nice too
so if i know when the final job is done i could get the time difference from that

opaque ledge May 7, 2020, 12:26 AM

#

You could add them to a component system group and check how much that system takes in profiler-timeline

hollow sorrel May 7, 2020, 12:27 AM

#

that only shows main thread time

coarse turtle May 7, 2020, 12:27 AM

#

Maybe profiler analyzer - I think it can read other job threads and can give you a general overview (also maybe the performance testing package might help not sure if it would 🤔 )

hollow sorrel May 7, 2020, 12:29 AM

#

i think profiler analyzer would still show individual job duration on the other threads

#

trying to get a grouped time

#

i guess manual job order goes against the whole idea of having a job system

mint iron May 7, 2020, 12:36 AM

#

you could put ProfileMarkers inside every burst job, but that would only give you the internal time minus scheduling etc.

hollow sorrel May 7, 2020, 12:37 AM

#

ya but also that'd be a lot of work

#

i guess could call .complete on every system after world.update and see how long it takes when actually profiling
would just be more convenient if there was another way that's not blocking

grim walrus May 7, 2020, 2:05 AM

#

Why is bool2 even a thing?

#

If I try myFloat2 == float2.zero I get this bool2 thing

#

It is really annoying

#

Vector2 never does this

ocean tundra May 7, 2020, 2:09 AM

#

math.all(bool2)

grim walrus May 7, 2020, 2:24 AM

#

Ok thanks

ocean tundra May 7, 2020, 2:46 AM

#

but also

#

@grim walrus you probably shouldnt be doing float == 0, its easy to get little rounding errors to make that false

#

instead something like math.abs(value) < 0.000001

#

but maybe DOTS is different??

grim walrus May 7, 2020, 2:52 AM

#

@ocean tundra I'm doing it with Input.GetAxisRaw, I've been using == 0 with that for ages no problem

ocean tundra May 7, 2020, 2:53 AM

#

I think its when your doing some maths to the number first, then comparing to 0

#

Rider just always gives me the error 😛

grim walrus May 7, 2020, 2:53 AM

#

Ah

grim walrus May 7, 2020, 3:08 AM

#

@ocean tundra Is there any way to lock rotation/position on specific axes in the physics body?

#

Or does one need to make a new System for that

ocean tundra May 7, 2020, 3:09 AM

#

umm i havnt done it, but i saw someone else doing it a few days ago

grim walrus May 7, 2020, 3:09 AM

#

Oh ok

ocean tundra May 7, 2020, 3:09 AM

#

i think there was some setting somewhere they ticked

#

in one of the physics components

#

the authoring ones

grim walrus May 7, 2020, 3:11 AM

#

@ocean tundra This?

#

https://discordapp.com/channels/489222168727519232/497874303463850004/707326872354160680

ocean tundra May 7, 2020, 3:11 AM

#

yup

#

to get started its probably the way to go

#

long term depending on your needs, you could implement a c# physics engine or just colliders

#

or wait for unity physics 2d

#

but i think that will be awhile

grim walrus May 7, 2020, 3:12 AM

#

I probably should implement my own engine

#

I think I only need circle colliders

ocean tundra May 7, 2020, 3:13 AM

#

those are the easist ones

#

again someone posted up there about them

grim walrus May 7, 2020, 3:13 AM

#

Any thoughts on resources for making a super basic physics engine?

ocean tundra May 7, 2020, 3:14 AM

#

unfortunately not sorry

grim walrus May 7, 2020, 3:14 AM

#

Oh ok

ocean tundra May 7, 2020, 3:14 AM

#

unity physics is basicly open source

#

maybe just delete all the z stuff?

grim walrus May 7, 2020, 3:14 AM

#

🤷‍♂️

ocean tundra May 7, 2020, 3:14 AM

#

yea dont know sorry

#

i would use that compainion thing with rigidbody2ds

#

for now

#

as it gets you started quickly

#

and slowly start to research the options

#

and when you start actually hitting unity's limits then you implement

grim walrus May 7, 2020, 3:40 AM

#

@ocean tundra One more question (please let me know if I'm being annoying for asking so many questions)

using UnityEngine;
using Unity.Entities;
using Unity.Mathematics;
using Unity.Transforms;

public class FaceMouseSystem : SystemBase
{
    protected override void OnUpdate()
    {
        Camera mainCamera = Camera.main;
        Vector3 target = Camera.main.ScreenToWorldPoint(Input.mousePosition);

        Entities.ForEach((ref Rotation rotation, in FaceMouseComponent faceMouseComponent, in Translation translation) =>
        {
            float angle = math.atan2(target.y - translation.Value.y, target.x - translation.Value.x) * Mathf.Rad2Deg;
            rotation.Value = quaternion.Euler(new float3(0, 0, angle));
        }).ScheduleParallel();
    }
}

#

I'm trying to get a point to mouse System to work

#

It rotates, but it rotates way too fast.

#

Any ideas why this isn't working?

coarse turtle May 7, 2020, 3:42 AM

#

what you probably want is to rotate over time

#

instead of immediately applying the angle

#

so some kind of interpolation between the current rotation and the target rotation

grim walrus May 7, 2020, 3:44 AM

#

@coarse turtle I should have been a bit more clear

#

The rotation simply doesn't work

#

It overshoots

#

For example, if I move my mouse only a little bit it tolerates around 360 degrees multiple times

coarse turtle May 7, 2020, 3:46 AM

#

is this like a first person camera?

grim walrus May 7, 2020, 3:48 AM

#

@coarse turtle 2D top down

coarse turtle May 7, 2020, 3:49 AM

#

oh alright

#

I'd imagine the angle is just too large, and if you want the camera to face the direction of where your mouse click hits, you want to take the angle between the camera's forward and some position

#

you're taking the angle between the target position and translation of some entity 🤔 not sure what that is

grim walrus May 7, 2020, 3:54 AM

#

@coarse turtle I'm not rotating the camera, I want to rotate the player toward the mouse

coarse turtle May 7, 2020, 3:55 AM

#

take the angle between the player's forward and point clicked in world space

#

you're trying to do an effect similar to transform.LookAt I assume