Unity ECS 1.0 Full Project Tutorial | Step-by-Step 🧟‍♂️

📌 Download the full project files: www.tmg.dev/entities-1-0 📌
👨‍💻 Code/Scripts from this video: www.tmg.dev/entities-1-0-code 👨‍💻
🙌 Support for some extra DOTS bonuses: / turbomakesgames 🙌
💬 Come chat with other DOTS/ECS devs: tmg.dev/Discord 💬
🚧 Resources Mentioned 🚧
Unity ECS Documentation - docs.unity3d.com/Packages/com...
My Videos:
Entities 1.0 Overview - • Unity Just Launched En...
Entities Explained - • What an Entity REALLY ...
Entity Archetypes - • What is an Entity Arch...
Archetype Chunks - • Chunks! Where Unity EC...
Intro to Systems - • Unity ECS Systems 101:...
System Update Order - • Managing System Update...
C# Job System - • How the Unity C# Job S...
ECS Random - • Generate RANDOM VALUES...
Entity Command Buffer - • How to Use Entity Comm...
Sync Points - • Sync Points: The Silen...
Material Overrides - • Material Property Over...
Blob Assets - • Using Blob Assets for ...
Dynamic Buffers - • How to Use Dynamic Buf...
ECS Editor Windows
💻 My Game Development Setup: tmg.dev/GameDevPC 💻
📸 My Camera Gear: tmg.dev/CameraGear 📸
🎮 Let me know what other topics you want to learn about 🎮
⌚ Time stamps for key topics ⌚
- 0:00 - Course Introduction
- 1:56 - Prerequisites
- 5:43 - DOTS Theory Section
- 6:21 - OOP vs DOD
- 11:12 - What is DOTS?
- 11:52 - What is ECS?
- 17:14 - What is the C# Job System
- 20:08 - Other DOTS Packages
- 22:22 - New Project Setup
- 28:31 - Creating a SubScene
- 29:35 - Creating an Entity
- 32:52 - Creating a Prefab Entity
- 34:37 - Setting up the Graveyard Entity
- 42:50 - Spawning Tombstones
- 1:08:39 - Spawning Zombies
- 1:30:55 - Zombie AI Logic
- 2:03:25 - Damaging the Brain
- 2:19:59 - Camera Controller
- 2:25:17 - Final Demonstration and Wrap-up
🌐 Find Me Online! 🌐
📄 Blog: tmg.dev
👨‍💻 GitHub: github.com/JohnnyTurbo
🎮 Games: johnnyturbo.itch.io/
🦅 Twitter: / turbomakesgames
📺 Twitch: / turbomakesgames
🎵 Music by: Joakim Karud / joakimkarud
#️⃣ #UnityDOTS #UnityECS #MadeWithUnity

[@TurboMakesGames]

UPDATE April 2023: Since I posted this original video, there have been a number of breaking changes in the latest version of the ECS API. While the main concepts are all still the same, the implementation details are slightly different. As such, I've created an article detailing these changes that you can reference as you go along: www.tmg.dev/tuts/zombieupdate/

[@daniyalniazi1771]

I came just here to post link. Keep it up man (Y)

[@chosencode5881]

Will you be doing a new bigger video now that 2022 LTS is out? Huge fan very excited for a definitive video on the subject

[@komocode]

Fully appreciate the update. Thank you so much.

[@kubamolewski167]

legend

[@MarkRiverbank]

I finally decided today was the day I was going to learn ECS, but it's disappointing to see all the things that have changed since this video was made a year ago. I get a video like this is an undertaking, but before I get started trying to sort-out the changes, I just want to make sure...you're not planning an update if I wait a week or two, are you?

[@gouravacharya1053]

This is the clearest and most comprehensive tutorial to DOTS I found. Thank you for making this!

[@josemiguelreyes8392]

From all Unity-related content around ECS, this is the one video I was waiting for. Thank you, Turbo

[@TurboMakesGames]

Awesome, hope it lives up to the hype 😁

[@needsloomis7164]

Duuude, thanks for being one of the only quality up to date DOTS resources. Its rough to have to navigate through so many legacy systems and depreciated concepts when trying to do simple tasks.

[@TurboMakesGames]

So glad to hear these videos are helpful to streamline all the craziness 😁

[@tjumma]

Amazing tutorial. Thank you very much! So many topics covered, and we get a complete working project in the end It would have taken me months to learn and get everything covered in this video working myself by just using the official docs.

[@uDamian]

This is an awesome video. You managed to cover pretty much all features within a self-contained game project. Solid dedication.

[@TurboMakesGames]

Thank you so much Damian!! See you at Unite if you'll be at the MTL office tomorrow 😊

[@zORg_alex]

Thanks. This helped me to build my first ECS for a test task. Now I see this might be quite a tool, especially it's pre-release now.

[@Norbingel]

Ok. This earned my subscription. I don't know anyone else doing stuff like this. I'm hoping ECS really comes into its own, ready and raring to go for when I start the project I think could really use it.

[@TurboMakesGames]

Right on - I'm very excited for the future of ECS as well 😀

[@Lindelldesign]

This was great, Turbo. Thanks for this. Some videos I just want to thumbs up more than once, this is one of them.

[@TurboMakesGames]

Haha thank you so much! So glad this video was helpful to you 😀

[@KOS_Nova]

I appreciate you mentioning that ECS is not very beginner friendly for people new to C# and Unity. I thought I was just dumb for not understanding any of the ECS information I was trying to absorb in other tutorials, but now I realize that they're made for someone with more experience.

[@VADIM-SOLOV]

I am very grateful to you for this amazing video. I really learned a lot of things from it. I fully share your admiration for Unity DOTS and look forward to a full commercial launch. Thank you for all the hard work you put into this video

[@TurboMakesGames]

Thanks for the kind words, all the best with your projects!!

[@thanhnguyenchi7413]

Always appreciate it when turbo makes an ECS tutorial

[@TurboMakesGames]

Thank you so much Thành - I really appreciate the support 😊

[@Hazzel31337]

i took now 4 days fulltime and worked trough your tutorial and now got my own "game" to expand on it, thank you so much, wouldnt had been able to learn and progress so far with just unitys documentation or get here at all

[@TurboMakesGames]

Congratulations that is so great to hear!! Feel free to share what you're working on over on our Discord if you'd like - tmg.dev/Discord

[@ryanputh1118]

Thank you! I can't start following along immediately because I'm about two thirds of the way through the 0.51 tutorial (which is brilliant by the way!), but very keen to work through it after.

[@TurboMakesGames]

Cool - hope the 0.51 video gave you some good exposure to the concepts and that it'll give you an appreciation for all the awesome new features in 1.0 😊

[@grasher21]

My man. I found your channel from Code Monkeys and what a joy this is. You are fantastic the way you talk, explain things, the details, quite direct on the case and no gibberish in between. You and Code Monkeys are my go to for Unity hands down! Keep up the good work, I am subscribing ;)

[@TurboMakesGames]

Thank you so much for the kind words, glad to hear these videos have been so helpful to you 😊

[@alyo7774]

Yey, the fresh tutorial! No need to get stressed about outdated information, everything is happening right now!

[@TurboMakesGames]

Things are coming together!! Enjoy 😊

[@vectorfield]

Thank you for this tutorial! Although I have been using Unity for a while now ECS is still pretty daunting to me. I find that DOTS get very technical very quickly so videos like these are a huge help for quickly getting me to a point where I can start to experiment with game mechanics (instead of me struggling to figure out how to structure my code, what classes to use, etc). I'm hoping you'll turn this into a series in which you build popular game mechanics, but with DOTS/ECS (like you've done on smaller scale in the past but for 1.0). I think that's something that'll really help more people hop on the DOTS/ECS train. Since the Unity team doesn't seem to care to do this themselves it is up to the community and you're doing a fantastic job.

[@TurboMakesGames]

Thank you so much for the support Arveus!! Really great to hear these kinds of videos are helpful to you to get you up and running with a working knowledge of these concepts. Really appreciate the feedback too - those are definitely some things I'd like to do and have some cool ideas for videos along those lines. All the best!

[@computergames3918]

hmmm... i think they don't have official tutorial videos yet because their DOTS are still experimental... so things are still changing

[@ashpats2]

I second that. Also, a very cool way to keep the video relevant is to release that blogpost with notes of what changed. Keep it up!

[@MrAndyPuppy]

LOVE - I'm gonna follow this through!

[@TurboMakesGames]

Awesome - hope you enjoy!!

[@vildauget]

Thank you for the effort, really useful video! I can't say I like the extra layers of complexity that entities 1.0 brings, but I guess that's because I prefer a code-only solution, and most of these seems to be implemented to get a better integration in the editor.

[@TurboMakesGames]

Glad you enjoyed the video. Fair enough - though thinking about it from Unity's perspective they need to have strong editor integration as production ready games will often have non-programmers working in the editor

[@TurboMakesGames]

If you aren't seeing entities in the Scene View but you can still see them in the Game View - open the Preferences window (Edit > Preferences...) then on the Entities section, make sure "Scene View Mode" is set to "Runtime Data" not "Authoring Data"

[@Raccoon0710]

I have vica versa :)) I was following CodeMonkey's tut, my entities position is updating, but capsula stays still. Entity has capsula as a child. Also I can see capsula in Scene view and in Main Camera small window (when i select Camera in hierarchy), but i don't see it in Game window :( where cound be the issue?

[@superpatrick8902]

Thank you~ was looking for this!

[@qwerty6vov]

thank you very much!

[@eriksjud9465]

GET IN Ive been waiting for Unity to finally bring out 1.0 Dotty!! Nice to see its finally out!

[@TurboMakesGames]

Love the enthusiasm!! Enjoy it 😀

[@ruslan_yefimov]

Unity really should hire you to promote DOTS, because you're doing fantastic job! I feel like Unity is finally on a way to create something beautiful and really powerful with DOTS, because I, personally, see huge potential in it

[@ivanmurzak1760]

True

[@TurboMakesGames]

Thank you so much for the kind words! I think they've really got something good with DOTS so happy to spread the word how I can 😊

[@ivanmurzak1760]

@@TurboMakesGames you are doing a great work!

[@synvoyity]

Thank you for your incredibly helpful content! Much appreciated

[@TurboMakesGames]

Thank you so much for the support! Very glad to know this has been helpful to you 😊

[@AlecInColor]

Finally a good explanation of ECS, DOD, and why I should care. As a UE dev I was struggling on why this mattered from everyone else. Thanks!

[@TurboMakesGames]

Awesome, glad to know you found this helpful. All the best with your projects!

[@jefflynch]

Amazing job on this, Johnny! I just finished the Spawning Zombies section and a minor change that I had to make was scheduling the SpawnZombieJob rather than running it on the main thread. Without doing that, it was producing an error associated with a scheduling dependency conflict with TransformToMatrixSystem:TransformToMatrixJob to access LocalToWorldTransform. I'm using the just-released Unity 2022.2.0b13 and the EntitiesGraphics 1.0.0-exp.14.

[@TurboMakesGames]

Yeah that must have just been a roll of the dice about how your systems got ordered vs. how mine were. Yes, scheduling the job would appropriately account for any dependencies so that is an adequate solution 👍

[@jefflynch]

@@TurboMakesGames Ah, and your new video on Systems covered that perfectly! 😀

[@LimitedInput]

Thanks this helped me, had the same issue

[@colin_actually]

Planning to settle in and watch this over the weekend. 🤓

[@TurboMakesGames]

Right on - hope you enjoyed 😀

[@hakanviajando]

After finishing and implementing the whole video, this was really hardcore tutorial and full of information, but also very clean to follow along. Great job! Looking forward to more things like how to use NavMesh, physics, new Input system and animations with dots.

[@TurboMakesGames]

Awesome - so glad to hear this! Definitely want to get into more fun/complex topics now that this one is out there for people to reference 😊

[@computergames3918]

I'm done watching the whole video and it's interesting to know that you were recording for ~6 hours and then the final product is 2 hours and 27 minutes 😯, nice... and it seems that you know what you are talking about.. plus your code seems like well made so i'm really enjoying it especially to know more about ECS in Unity or in other words the Data-Oriented design... i'm a beginner so i'm just passing by right now in video about game developing then after watching them i am gonna go to pure C# programming...

[@qwerty6vov]

Thank you for your work!

[@ollie9999]

Covering the breaking changes including the recent revision article has been incredibly helpful. Tracking changes for Unity DOTS over the past few years has been a nightmare to get a firm grip on

[@TurboMakesGames]

Great to hear it!! Hopefully my future videos won't require any major patches as the API solidifies 😁

[@ollie9999]

@@TurboMakesGames You've helped me so much so thank you

[@duelsoldier3048]

Fantastic Explanations!

[@alec_almartson]

This is an Amazing Video. 👏🏻👍🏻 Thank You.

[@TurboMakesGames]

So glad to hear you think so!!

[@yugao2619]

Nicely done man !!!!

[@TurboMakesGames]

Thanks Yu!! Glad you though so 😊

[@pedrodesanti6266]

your videos are pure gold, thanks

[@TurboMakesGames]

So glad to hear they've been helpful to you!

[@damnverificationcode]

Thanks for the effort making this🙏🏻

[@TurboMakesGames]

Absolutely, glad you found it helpful!

[@EvgeniPetrov]

Thank you! Great work!

[@TurboMakesGames]

Thanks! Glad you liked it 😊

[@fqed]

Great practical video about ECS. Thanks

[@TurboMakesGames]

Sure thing, glad it helped!!

[@PotatoManager420]

Thank you for your videos, you are making a good public service

[@TurboMakesGames]

Appreciate the support 😀

[@mylegispotato]

If your entities are not visible in Scene View but visible in Game View, open the Preferences window (Edit > Preferences…) then on the Entities section, make sure “Scene View Mode” is set to “Runtime Data” not "Authoring Data".

[@jndx2014]

Very nice tutorial! Thanks!

[@TurboMakesGames]

Glad it helped you, all the best with your ECS learning 😊

[@wk1247]

Thank you for the tut! One question, what's the best way to handle passing back data to mono space? Say you wanted to keep track of the Brain Health in a UI?

[@rajeshnalla6950]

Thank you very much ,for awesome tutorial

[@TurboMakesGames]

Sure thing - hope you found it helpful!

[@zorglug]

So, I'm gonna go ahead and watch that whole thing :)

[@TurboMakesGames]

Love it!! Enjoy

[@rotomon666]

Thanks for the video! I wonder if its worth going to DOTS if youre already building on top of Job System/Burst, from the optimization and possibilities perspective

[@needsloomis7164]

Probably not. Unity was a leader in high fidelity cell phone games long before DOTS, so if you are already optimizing to the point of using jobs/burst, you're probably so cognizant of optimization that you likely have bigger bottlenecks elsewhere. Of course it all depends on your project. If you are dealing with 10,000s of dynamic objects, it could def help.

[@TurboMakesGames]

Technically speaking jobs/burst standalone are still considered "DOTS." If you are referring to ECS, then there are certain applications where switching to ECS would benefit. You can make a lot of things when starting with ECS, but switching to it is generally only a good idea for very specific use cases.

[@81gamer81]

2:24:30 staring at the brain as camera moves, and then switch to another static window gives me a trip

[@markaldrich8753]

Just letting everyone know at 1:02:00 UniformScaleTransform is no longer there. Replace it with LocalTransform, which contains all the same fields.

[@lassemunktechnerd]

thanks!

[@envilonscript]

What versions are you on? Because I'm using UniformScaleTransform and it's working fine. (Unity 2022.2.0b16, Entities 1.0.0-exp.12)

[@markaldrich8753]

@@envilonscript I'm on exp. 1.0.0 exp.15,

[@MatthewPatterson-nr2gh]

Thanks, I just bumped into this!

[@YoconnGaming]

I was just looking around for 10minutes and thought "Hey maybe someone commented something" Thank you for being that guy, saved me some trouble. Cheers!🍻

[@JonasSchett]

Really great video as usual. Was the perfect video to get back into ECS after a longer break. I am running into some issue actually, which might be a very basic problem. Whenever I hit play, I can only see tombstones and Zombies in the game view but not the scene view. This is for both beta11 and beta13. Not sure if anyone has encountered this issue, but I'd appreciate if people who have encountered it before might be able to help. This is only for Entities spawned and does not affect other Gameobjects in the subscene.

[@JonasSchett]

Found the issue. I didn't set Preferences -> Entities -> Scene View Mode to Runtime Data

[@TurboMakesGames]

Boom - you got it! Forgot to mention that one in the video 🙃

[@minneapolismn660]

Amazing! Should pin this.

[@81gamer81]

@@JonasSchett Thank you. I was closing the Subscene in order to see them in editor. Also its no renamed to Scene View Mode = Runtime | Authoring Data. No transform handle, but guess we dont need that omg

[@mlwiz950]

If this isn't an official supplement to the Unity documentation, it should be. Thanks for this great learning resource!

[@TurboMakesGames]

Thank you so much for the support and the kind words 😀

[@jimmyyu3383]

The best video ever. It would be great to see how to do saving and loading in ECS also! I am still doing my save-load in a traditional way. :(

[@TurboMakesGames]

Thanks! I had fun making it 😊 Good to know you'd like to learn some more about saving and loading as that is definitely an important topic. What do you mean when you say you are doing saving and loading the "traditional way?"

[@jimmyyu3383]

@@TurboMakesGames As far as I know, doing saving and loading in ECS need to de-seriallize and serialize the whole world. But what I did is just to copy data from "entities" which I want to save and when loading game, I paste the data back to the "entities". For example, I have an inventory entity, which is a dynamic buffer. So, I copy the dynamic buffer into array in a class and save the class. When loading, I get the array from the saved class and put the data back to the dynamic array. Overall, I did nothing about the "world". This is what I think the "traditional way". But, it seems this way does not work after building the build. I am not sure why. Try to figure out...... Anyway, I am new in programming, so I am sure there is something wrong somewhere in my code. But to find out which code causes the problem, I have to re-do the whole project and test bit by bit....that is the only way I can think of (or I do the reverse, comment out bit by bit)...because in unity everything works fine, but not in build. That is frustrating! at the end, if I need to re-do, i must as well learn the new 1.0. Hence, here I am, learning from your video :)

[@ProfessionalNovice0]

Thank You!

[@user-gl4hd4mp4i]

Thanks for this turtorial! I really learned a lot of things from it. Besides, I'm confused about how to play animations and how to prevent objects overlapping. Would you plan to add these systems?

[@TurboMakesGames]

Glad it was helpful! ECS doesn't have a native animation solution yet, so you can either sync the entity with a GameObject for the visuals or use a 3rd party solution. The Unity forums has a DOTS animation section where someone has a post listing all the options. Preventing overlapping gets a bit more involved as you'll have to implement DOTS physics or build a custom avoidance solution. But this is something I'd like to cover at some point

[@RockoShaw]

thanks a lot for your tutorials they are the best. Is it possible to make Visual Studio add the references at the top "using.." automatically as you type something?

[@ayhansakarya2637]

Is there a specific reason why we create a NativeList just to use the ToArray() method on it in SpawnTombstoneSystem? Wouldn't it be better to directly create a NativeArray and avoid the ToArray() call?

[@crazyfox55]

I would love to see a video dedicated to system design. Something that isn't a toy example, where I can see my own creativity coming alive.

[@TurboMakesGames]

Awesome, glad to know you'd be interested in that sort of thing - that sounds like a ton of fun. Open to more specific ideas if you have any 😊

[@mehmetakyuz5290]

Hey man, amazing job you did there! I was going to ask, how hard is possible to implement animation for like idle, attack, running type of things in ECS?

[@TurboMakesGames]

Unfortunately, there isn't an ECS compatible animation solution from Unity but it is still part of the "Planned" section of the DOTS roadmap. Check out this forum post by a community member talking about some of the options for animations in DOTS available now - forum.unity.com/threads/dots-animation-options-wiki.1339196/

[@mehmetakyuz5290]

@@TurboMakesGames Thank you!

[@DecentralisedGames]

YESSSSSSSSSS

[@TurboMakesGames]

Love the hype!!!! Enjoy 😊

[@Heero5308]

You are better than Brackey!! I am adding your picture to my alter next to his.

[@Nialyah]

Hey Turbo. Been watching some/most of your ECS videos as they are definitely the top and go to resource for learning Unity DOTS in my opinion, but excuse me if I've missed one where you explain my following question. I've been trying to get a grasp on how 2D rendering works with Unity ECS outside of project tiny which seems abandoned at this point. I've seen some repos with custom Game Object to Entity Sprite Rendering conversions and I see that Unity ECS also now supports that conversion in subscenes. However from the limited understanding I still have of DOTS, I understand that sprites are still stored as reference types and thus can't be bursted. My question is, do you know what way or ways even, for working efficiently with 2D in Unity. My test case I want to make is a simple 2D platformer with # amount of entities, but I feel a bit blocked/gated by the lack of focus on 2D in Unity ECS. Can an image, say 16x16 pixel tile be stored as data/struct in e.g bytes with read/write access and have a system render said tile? I would greatly appreciate if you could give your insights on this or perhaps send me in the right direction. (Bonus subjects: 2D animation, 2D lights and tilemap in ECS). I love your videos, thanks for making such great content!

[@TurboMakesGames]

Hey there, thanks for the kind words and glad to hear these videos have been helpful to you!! Yes, so Project Tiny (now referred to as DOTS runtime) is on a development hold until after production-ready 1.0 is out. Right now, probably your best bet for 2D would be to render textures to a quad mesh. Though I will likely be chatting with some DOTS people at Unite next week so I'll see if I can get any insight from them on recommendations

[@xuyang1465]

Thanks!

[@AnthelmeDumont]

Really informative video thanks but I have a question, why are you putting the random transform generation code inside the GravetardAspect and not on the relative Systems that are responsible for the spawning logic?

[@ugurtunakoca3584]

Man thank you! I am already in the game industry, working in a game company and trying to improve my skills by learning the ECS. There is no other tutorial better than yours. :) I have a question: We have the zombie rise aspect and the local transform reference in it. So to my understanding; each entity has its own aspect because we can move them seperately or is there one for all zombie entities or is there one for all entities? I am not sure that I have understand the aspect concept fully.

[@bremstrk5641]

To what I understood, aspects creation and assignation is all done under the hood. Every entites, that have all the components referenced on an aspect, have that aspect on them. You can look at the aspects of an entity in the Aspects Tab in the inspector in runtime mode. I may be wrong but it's what I understood after using them a bit 😁

[@DenYak]

Thanks you very much!

[@TurboMakesGames]

You got it!!

[@mylegispotato]

I am marking a spot, survived 1h52minutes. That's too much for me. So much code for such a simple mechanic that I don't think I am going to implement it into my project, at least not yet. Looking at your new GDC video - I am hoping for the Rider integration at least. Video was great. Much respect. As the other dude says, in the second half you got so fast that I couldn't keep up and had to rewind the video all the time. No worries though, probably the best guide on KZbin for starters. Let's hope it does get simpler in future.

[@TurboMakesGames]

Nice almost 2hrs in, that's good! Definitely a lot all at once if you aren't familiar. Thanks for the feedback though, will certainly keep it in mind for future tutorials like this one

[@WAYNGames]

Great video, as ususal !

[@TurboMakesGames]

Thanks so much, glad you enjoyed!!

[@Le_Mur]

Question : Why not put the initialization inside the public void OnCreate() function instead of OnUpdate? Is there a reasy why?

[@tjumma]

Anyone facing the 'Loading Entity Scene failed because the entity header file couldn't be resolved issue': I've figured out that this issue is rarely related to the problem with the SubScene itself, but instead is cause by the Exception thrown by Burst compilation during the SubScene import. To try and identify the source of the real problem you can: 1. Disable the SubScene in the Hierarchy and run the PlayMode - sometimes it shows the bugs and exceptions that are not show with the SubScene being turned on (such as 'GetSingleton() requires that exactly one entity exists that matches this query, but there are {0}') 2. After getting the Loading Entity Scene failed because the entity header file couldn't be resolved error, go to /Logs folder of your project and open one of the "AssetImportWorker[0-N].log files (which one exaclty should be indicated in your console WorkerImort error message) Type in the "Exception" in the search - you will probably be able to find something like this: 'Exception thrown during SubScene import: System.ArgumentException:...' In my case, the compilation exception was caused by incorrectly managing native collections. In yours - it might be smth else. Anyway, you can comment out the problematic code and try building again to check if it indeed is the source of the problem. Hope it helps!

[@mattseaton5832]

Are you going to do a video on the new animation package? Would love to understand actual skeletal animation in dots. Also how does the rigging package fit in? And how does the playable API actually work? Every video I've found that is just about timeline, but it does so much more than that but I can't figure it out.

[@TurboMakesGames]

What animation package are you referring to? As of now, Unity doesn't have an officially supported animation solution for DOTS. However there are some other options available to you - forum.unity.com/threads/dots-animation-options-wiki.1339196/

[@insthync]

Wow, superb :b

[@TurboMakesGames]

Hope you find it helpful!!

[@absamurai]

Thanks for the video! How did you make TMG.Zombies namespace by default when creating new scripts in Rider?

[@br0berson]

Edit -> Project Settings -> Editor -> Root Namespace = "TMG.Zombies"

[@user-kq4bi7xn2f]

At 1:21:46 is there any particular reason to use a job, instead of directly decreasing the timer and spawning zombies in the OnUpdate function? Especially since we use Run(), which means that it's executed immediately in the main thread, I don't understand why it must be a job. Maybe my understanding is flawed? Appreciate if someone clarifies it for me

[@nguyenhoaiphucnguyen3334]

Tks. I am waiting your video

[@TurboMakesGames]

Enjoy!!

[@Armkaiser]

Thanks for the tutorial! I really love it. Subscribed and bell on! I'm using Dots 1.0.0-pre.15 with Unity version 2022.2.0f1 I gather some issues that I found and share for who have problems like me. Notify me if any was wrong. :) 1. Change all UniformScaleTransform to LocalTransform, then -> ecb.SetComponent(newTombstone, newTombstoneTransform); You do not need to instantiate LocalToWorldTransform or LocalTransform. Just pass the variable in ecb.SetComponent(). 2. Error: "Loading Entity Scene failed because the entity header file couldn't be resolved. This might be caused by a failed import of the entity scene. Please take a look at the SubScene MonoBehaviour that references this scene or at the asset import worker log in A:\xxxxxx\ZombieBrainHunter-DOTS\Logs. scenePath=Assets/Scenes/GraveyardScene/GraveyardEntityScene.unity" Fix no.1: Add [ChunkSerializable] property for ZombieSpawnPoints script. (I got a message that unity told me to do for avoid this error) Fix no.2: Duplicate your objects in sub-scene and delete the old objects. 3. You might need to change trasformAspect.Position (Obsolete) to transformAspect.WorldPosition instead. Rotation as well But on ZombieRiseAspect, you might use .LocalPosition instead. I don't know why .WorldPosition make my zombies rise up from center of the world position. 4. Use [EntityIndexInQuery] instead of [EntityInQueryIndex] 5. If you try to get brain scale or get transform component Fix: Change GetComponent to GetComponent() after called you can just .Scale 6. Error:"InvalidOperationException: System.InvalidOperationException: GetSingleton() requires that exactly one entity exists that matches this query, but there are {0}. This Exception was thrown from a function compiled with Burst, which has limited exception support." Fix: Add state.RequireForUpdate(); in OnCreated() but if you on SystemBase you can cut "state." out and then RequireForUpdate();

[@lassemunktechnerd]

@turbo makes games Can you pin this comment please ? :)

[@tommaxwellmans3]

This comment should be pinned

[@GiMiat]

I wanted to ask, does the ECS system features frustrum or occlusion culling when rendering? is there a specific way to go for it?

[@DaveWelsh79]

I tried using a couple other prefabs for the zombies but the SpawnZombieSystem seems to separate their body parts. Do you have any idea why that would be happening?

[@philipbanks8067]

Following along with the tutorial.... At 39:11 when I set the inspector to "run-time" with the yellow circle, it just says "Invalid Entity The entity does not exist anymore, please unlock inspector if it is locked or re-select." The inspector info for the brains object shows but not for the tombstone. I guess it's not baking for some reason? Anyone else getting this problem? The Inspector is unlocked and I have re-selected even re-created the object and the pre-fab that gets attached to it trying to troubleshoot.

[@deccopiropo]

Hey, this technics are good to be used with particle system? I'm trying to create a damage zone like brawl stars combat (with clouds that are particle systems), but i never worked with Entities before. I've done a simples test following code monkey tutorial but i don't know what i'm doing wrong that when I instantiate too much objects it's dropping too much the game fps. I tried instantiate 2000 objects and my fps drops from 200 to 20, do you know why?

[@michaelmurray2595]

This video was highlighted in Jason Weimann's Friday show :)

[@TurboMakesGames]

Those guys are the best 😊

[@rdragon587]

Cool. Thanks)

[@TurboMakesGames]

Absolutely!!

[@beiyangli705]

Why can't I just set ZombieWalkProperties to false directly in the baker stage? I tried this operation in the 2022.3.8 version and found that it worked. I thought there might be some other reason.

[@hosseinAlikardan]

hey bro, I want to use a Json file as my database(x,y,z cordinates), how can I use them in Isystem with burst attribute on it ? when I try things it always says u are using class or string that they are in managed data category.... :( can you help me pls ? in general I can have 50000 entities with random positions or in the center of the world but imagine u have exact position of every of them and now i want to create them in that position

[@wrewrrwe]

Thank you for the tutorial! Very useful video. Have one question. We write some peace of logic in Aspects classes (Walk(), Eat() etc), but it's seems more correct to write logic in JobEntities or Systems. Or not? Is it ok to write logic in Aspect classes? What do you think? And thank you for reply

[@TurboMakesGames]

Kind of a personal preference at that point - I prefer to put the logic in aspects so I can keep my systems really clean. This allows me to write code that is much more modular. i.e. if I have a number of different systems that call a method in a aspect, I can easily change the implementation in one location (the aspect). Also, if I decide I want to try out a new implementation of something, I just need to create a new method in the aspect and change one line of code in the system.

[@user-hk1hp6pj2d]

Hi! I'm new to ECS and following your tutorial which helps a lot. Following your video, I've got one question. (1:00:27) You set system's state to OnUpdate to wait until GraveyardProperties Singleton exists so that no reference error occurs. My question is, if you have to implement some method using OnUpdate function in same class, what will you do? Will you be able to easily implement it, or there is no way to guarantee singleton returned before OnCreate is called so you have to seperate GenerateSystem/LogicSystem unreluctantly, not to fulfill the responsibility of class? I mean, is there proper way to 'await' return of singleton class(and delay call of update) so that you do not need to implement generating process in update method. I'm wandering if ECS system having Awake/Start seperated would made this easier since we could simply secure singleton instance in awake and call it later in start or update in traditional unity system. Looking forward to your answer! Thanks in advance! (sorry for my short English, please be gentle if my sentences looked silly or rude)

[@TurboMakesGames]

You mean like a "RequireForOnCreate"? That would be really nice, but I am not aware of something like that for now.

[@LimitedInput]

Thank you for this tutorial! It took a while to get through but well worth it. I am wondering how much work would be required to convert this tutorial to work in a 2D world. I am thinking a game like Vampire Survivor.

[@TurboMakesGames]

Glad you followed through it! It really wouldn't be too difficult as there aren't any DOTS specific 2D components. So it would really just be a matter of changing the perspective, swapping out the meshes for quads with sprite materials, and adding some extra logic to ensure everything stays on a 2D plane.

[@envilonscript]

If you still get InvalidOperationExceptions after adding the [UpdateAfter(typeof(SpawnZombieSystem))] in 1:36:36, I also had to add [UpdateBefore(typeof(TransformSystemGroup))] to the ZombieRiseSystem to resolve this issue.

[@WeirdDuck781]

This. Thank you very much. I did " state.CompleteDependency();" on SpawnZombieSystem.OnUpdate and it also "fixed" it but im assuming that without your approach, Rise job may run through another update tick, at least its the reasoning i can find about this error... Weird that Turbo didn't have this issue nor specified in the update thread...

[@tolomeonogo8593]

Thank you so much! Was getting crazy trying to understand why I had the issue, this comment should be way higher..!

[@prppnd3811]

Thank you so much! If you can explain why this is occuring and why this attribute solve this problem that would be great!

[@maxfun6797]

I dislike that they don't have OnStart and alike methods for ISystem. Anyhow thanks Turbo for this tutorial. Good explaination and I feel I got enough to be comfortable moving forward with Dots.

[@TurboMakesGames]

Yeah the ISystem is a bit more limited when it comes to lifecycle options. Glad this helped you feel more comfortable with DOTS, all the best on what you will work on next!!

[@xioned]

Hi, seems like I can't schedule SpawnZombieJob. Unity giving me this error "Nested native containers are illegal in jobs". Now probably because can't set Graveyardaspect component in SpawnZombieJob Execute method. Can you tell me whats the solution to this? As always great video ^,^. Thank you.

[@darzeon]

Did they simplify dots or there are still too many unnecessary steps to achieve the same goal?

[@ivanmurzak1760]

Does it possible to have MonoBehaviours + Components on the same GameObject? For example AudioSource (MonoBehaviour) + my custom position mover Component. If the answer is yes - I don't realize how Unity manage things related to parallel executing. What if I am going to move the gameObject in parallel, how it can or can not to conflict with MonoBehaviours on it, for example with AudioSource or BoxCollider or any other?

[@TurboMakesGames]

You can't really operate on "GameObjects" in parallel - only data associated with the GameObjects - so it is really just modifying the data, then it will get synchronized back with the main thread at some point in the frame.

[@BanditBloodwyn]

Are there any changes in the way to change the materials settings of a single Entity (made from a prefab via a baker)? Or can I check your video about Material Overrides?

[@TurboMakesGames]

Material property overrides would probably be your best bet. Without getting into too much detail there are some efficiencies through using material property overrides without switching materials for an entity.

[@BanditBloodwyn]

@@TurboMakesGames cool, then I'll check out your video about this. I hope it's not too outdated since the 1.0exp update?

[@shortestshorter]

Great video! I do have one question that I can't get around in the past 2-3 days. My player controller is currently written using mono-behaviors. Is there a way to translate his position in ECS and then access it from another system? Simplified question: Player in mono-behavior, enemies are ECS. I want enemies to follow player's position. Thank you in advance

[@TurboMakesGames]

Probably the best way to go about doing that is to have an ECS "data-only" entity of your player, then use a MonoBehaviour to update the position of that player entity every frame, then all your enemies could easily follow the player entity position. Hope that helps!

[@ha107642]

I was thinking about the ZombieEatSystem. Do you know how the concurrency of EntityCommandBuffer.ParallelWriter is implemented? I would guess it is implemented with locks (but maybe that sortKey does some magic?). If that is true, then we could skip the ApplyBrainDamageSystem and just put a lock around the health of the brain directly instead. Another alternative would be to just not run the eating in parallel at all, as I suspect lock contention would take up the majority of the time of the eat code anyway. But maybe later we want to add more juice there, and it might be worth parallelizing again. Does Unity ECS ever do task level parallelism? as in, can it run two systems in parallel? If so, we could run the eat system sequentially but at the same time as some other system, that makes use of the rest of the cores/threads. Lastly, we could instead tally up the damage per thread, and then sum all damage that each thread accumulated. Whether this would be good or not depends on how many threads Unity spawns for these jobs. Do you know how it works here? Does Unity try to match threads with number of cores (or something like that), or does it have lots of threads decoupled from core count? Thanks in advance. :)

[@TurboMakesGames]

Thanks for the thoughtful comment. Unity takes care of a lot of the messy details though job dependencies and other safety checks. Though if you know what you are doing and you know you are writing to different places in memory from multiple threads, Unity does give you some tools to bypass their safety checks and other parallel restrictions - though showcasing those things would be far outside the scope of this video. "Systems" themselves can't run in parallel as they all run on the main thread - though systems often schedule jobs that run on worker threads and these jobs can all run in parallel, should they not have any overlapping dependencies. By default, Unity will assign one thread as the main thread and al the remaining threads on the CPU will be designated as worker threads. Any available worker thread can pull jobs from the queue for processing. Hope that helps!

[@ha107642]

@@TurboMakesGames Alright, awesome! Thank you very much :)

[@Armadous]

I'm finding that I have to re-play Unity if I change any code whatsoever. I'm used to some recompilation support while the scene is playing. When I try this with ECS, I'm left with an empty world. Is this functionality I can get back?

[@matanyamin1]

Hey TMG, I was wondering what happens to the collider when you put a GO inside a SubScene without removing the collider. Does it work as hybrid ECS + GO?

[@TurboMakesGames]

The GameObject and collider would be converted into an ECS entity and ECS compatible collider. The regular Unity collider acts as an authoring component for the ECS collider in that case

[@theman3282]

current rider has neat little helper than can generate component data from monobehaviour

[@TurboMakesGames]

Indeed it does!

[@kendallfleming4246]

Do you have any tutorials over netcode and AR Foundation, particularly in ArCore?

[@TurboMakesGames]

I do not, don't necessarily have any plans anytime soon either. Possibly something on Netcode for Entities at some point

[@andreyakladov]

Struggle to understand: what if I need to set all the data for spawners, objects, properties, configs etc. from outside sources (not from the Editor) and I need to do it once every next level loaded, how do I achieve it then? All those MonoBehaviours should just read data from somewhere and there is no one central start/setup point for a level? It seems that the entire DOTS/ECS paradigm designed to play in editor with a single gameplay scene, can't see how to apply this.

[@ayhansakarya2637]

Sorry for spamming all my questions in here, but I do receive the following error for the SpawnZombieJob: "Assets\Scripts\Systems\ZombieSpawnSystem.cs(40,36): error CS8340: Instance fields of readonly structs must be readonly." and adding the [ReadOnly] attribute I know from the job system doesn't solve it and making the fields readonly , makes it impossible to initialize like in the video

[@markygx1]

I'm think in a years time this ECS system from unity might begin to stabilize

[@fornonplayers3668]

amazing tutorial! just wanted to point out having _name for private vars that is not a C# microsoft standard, I understand if it is in C++

[@TurboMakesGames]

That is a Microsoft standard for private member variables - learn.microsoft.com/en-us/dotnet/csharp/fundamentals/coding-style/coding-conventions Idea is that you can quickly tell if a variable belongs to the class vs. a local function variable

[@fornonplayers3668]

@@TurboMakesGames perhaps I need to update myself =p cool

[@hakanviajando]

Thanks for the video a lot, one issue I have while following along is, I cannot see the IAspect which I created in the Aspects inspector in the play mode.

[@Heisenberg-xc8ub]

Bump, got the same issue

[@hakanviajando]

@@Heisenberg-xc8ub just to give info, even though it didn't show up in the aspecs section, my code works, system is able to retrieve the correct entities with that aspect.

[@TurboMakesGames]

How interesting - maybe just make sure you are in the "full entity mode" in the inspector rather than the hybrid mode? That would be the little orange circle is full rather than empty or partially full in the upper right. Glad to hear that it still works fine though!

[@hakanviajando]

@@TurboMakesGames Unfortunately it doesn't show with full entity mode too. Maybe just a bug regression on the editor with the new minor version.

[@moorishstar]

@@hakanviajando Same issue for me in 2022.2.b13, anyway, since you say it works in code later at least I won't need to bash my head anymore trying to figure out if I did something wrong. Thanks.