This is honestly a really good tutorial about something that not many people cover. Thanks a lot!
@SunnyValleyStudio3 жыл бұрын
Thanks for watching!
@Axle117mc2 жыл бұрын
+ It covers the topic of how to actually Cancel a running task since unity doesn't handle it internaly. Much love
@vima90462 жыл бұрын
THANKS THANKS THANKS! Superclear and esaustive explanation of an a bit complex argument in an easy way! All teacher should explain like you! Thanks again!
@SunnyValleyStudio2 жыл бұрын
I'm glad that you like it. Thanks for watching!
@mementomori71603 жыл бұрын
I've found you by accident while I was reading a post on reddit, I'm glad because I was just looking for some tutorials about exactly this. And you're video about lambda expression is really good too, I finally understand it better. Subscribed, I'll check more of your videos and I'm waiting for the next one
@SunnyValleyStudio3 жыл бұрын
Thanks a lot for watching! I am really glad that I was able to help you understand lambdas :)
@PsigenVisionАй бұрын
In my hunt to understand async, your video was an instant addition to my playlist, and the first one I go to when I'm like "wait... how did that work again?" That being said, I would be so so grateful if you could maybe follow up this video with an introduction to incorporating UniTask.
@SunnyValleyStudioАй бұрын
Awesome idea! Thanks for the feedback. Adding it to a todo list 🙂
@Focto2 ай бұрын
Damn, you have such a good visualization, it's ease me too understanding it 👌
@SunnyValleyStudio2 ай бұрын
I really appreciate that! And I do apologies for a late response 😅
@cryptoversegirl7751 Жыл бұрын
Two years old video. Still its very useful and i have subscribed to your channel. Looking forward to see many interesting topics!
@SunnyValleyStudio Жыл бұрын
Thanks a lot! 👍🙂
@bsdrago Жыл бұрын
This video is very good, BUT, deserves an Update with Awaitable class =)
@SunnyValleyStudio Жыл бұрын
Thanks for the feedback! I will definitely make a video about that feature :)
@devgame Жыл бұрын
Very simple and clear explanation, thanks!
@SunnyValleyStudio Жыл бұрын
Glad it was helpful!
@Eculeus0073 жыл бұрын
Wow thank you! I think Async can be a great performance booster on many parts. I´m happy to found your channel.
@SunnyValleyStudio3 жыл бұрын
Glad it was helpful! Next video we will talk about multi-threading to not only unblock the main thread but to perform the operation much faster:)
@HyBlock3 жыл бұрын
@@SunnyValleyStudio Thanks bud sounds great!
@PROeloGangsta3 жыл бұрын
Amazing tutorial! Can't wait for parallel topic. Thanks!
@runyu51252 жыл бұрын
so far the best entry tutorial about Task in Unity
@SunnyValleyStudio2 жыл бұрын
Thanks for watching!
@shavais333 жыл бұрын
Wow! It looks like Unity's C# now supports the full range of C# 8 functionality! That's a *monumental* improvement over the way it was the last time I used Unity! Way To Go Unity! By the way, I'm very sure the poster absolutely does not mean to suggest that sweeping incredibly inefficient code under the rug by sticking it in background threads is a great and wonderful approach to resolving performance issues. Please handle async with care! It's very easy to end up loading down all the cores and make your poor user's entire system bog down to a crawl. Operating systems should probably restrict any single app from completely loading down all the cores, but by and large they don't. I'm sure this was just a rough sample to demonstrate async, but please do be aware that the machine still does actually have to run your code, and most of the time you find yourself using a nested loop like that there is probably a much more efficient way to do what you're doing.
@SunnyValleyStudio3 жыл бұрын
Thanks for the feedback. I have actually used this in a project and everything worked well kzbin.info/aero/PLcRSafycjWFceHTT-m5wU51oVlJySCJbr I still am not an expert on multithreading - I just saw than nobody mentions it and how to use it in Unity. If you know any good book about this topic let me know! I would love to improve my skills :)
@322ss3 жыл бұрын
Thank you once again, neat introduction! These shorter videos are nice, it is hard to invest hours of time into long series... even if topics covered in those series were interesting.
@SunnyValleyStudio3 жыл бұрын
Thanks for the feedback! You might be right. I fear to become the next channel that creates "how to make box move in unity" vids or the examples will be too simple to be used in real code. Still I will try my best to learn how to make shorter videos without compromising the content!
@lubba642 жыл бұрын
this literally saved my game thanks so much
@melodysprout234563 жыл бұрын
This is very well explained, thank you.
@SunnyValleyStudio3 жыл бұрын
I am glad that you think so :)
@pennaverdeful2 жыл бұрын
Very nice explaination, thanks!
@SunnyValleyStudio2 жыл бұрын
Thanks for watching!
@lost.2502 жыл бұрын
Quality tutorial, thank you :)
@SunnyValleyStudio2 жыл бұрын
Thabks a lot for watching!
@efexzium2 жыл бұрын
Awesome Would love to know more on how Task works with out async
@SunnyValleyStudio2 жыл бұрын
Thanks for watching! You can find UniTask which seems to be better integrated version of Tasks github.com/Cysharp/UniTask I will do my best to post more about the topic of multithreading 😉
@Fatalix3d3 жыл бұрын
Thank you, really good tutorial.
@quadriproduction3 жыл бұрын
perfect tutorial..probably best explain how to use threads correctly!Thank you.Can you put the gist for this type of tutorials..would be awsome
@SunnyValleyStudio3 жыл бұрын
Thanks for the feedback!
@RRaiho2 жыл бұрын
Holy Moly, instantly subbed to this gem channel, though which video are you referring to at the end? or isn't it out yet?
@SunnyValleyStudio2 жыл бұрын
Hey! Yeah I kind of got distracted showing how to use this in my voxel tutorial kzbin.info/www/bejne/pYipe59ra65_ars and it took few months - long story short I forgot about part 2. Sorry about that!
@vitvohralik5557 Жыл бұрын
Thanks a lot man! That is exactly what I was looking for.
@SunnyValleyStudio Жыл бұрын
Awesome! Thanks for watching 🙂
@yuchen35872 жыл бұрын
Simple and clear
@SunnyValleyStudio2 жыл бұрын
Thanks for watching!
@worldman36703 жыл бұрын
i like you! and your perfect toturial
@SunnyValleyStudio3 жыл бұрын
Thank you so much!
@-Engineering01-2 жыл бұрын
There is a missinformation here. Async methods are not multi threaded, u're on the main thread even if u use async.
@SunnyValleyStudio2 жыл бұрын
Are you sure? Check the documentation docs.microsoft.com/en-us/dotnet/api/system.threading.tasks.task.run?view=net-6.0 "The examples show that the asynchronous task executes on a different thread than the main application thread." I might be wrong here ( but if it was the same thread it could not possibly work without clogging the main thread. I guess it is really up to the Task library to schedule it. I have used this in a working project and there is no way all the calculations were called on the main thread. kzbin.info/aero/PLcRSafycjWFceHTT-m5wU51oVlJySCJbr
@-Engineering01-2 жыл бұрын
@@SunnyValleyStudio By using async functions, u're on the same thread but u're spliting your expensive work along the core that's why your game is not freezing at all since u split the expensive work in different timeline on the same thread. You can measure that using Debug.Log("This code is running on thread: " + Thread.CurrentThread.Name); Or you can use unity profiler to see if it's on main thread or not.
@endorphingames2957 Жыл бұрын
Yup @Mechanics is right. Async still works on the main thread, just time slices the work to make it smoother.
@Izzy-fr1zu Жыл бұрын
@@SunnyValleyStudio "The examples show that the asynchronous task executes on a different thread than the main application thread." yes, but that's outside of unity. I think unity has it's own thread management that prevents tasks to run on different threads? I could be wrong though
@f11bot2 жыл бұрын
Does this help remove lag when instantiating large objects? Amazing tutorial btw!
@SunnyValleyStudio2 жыл бұрын
I don't think so. Large objects or large number of unity's that needs to move are usually split into "batches" and instantiated / moved ex 5 per frame rather than 1000 all at once. This would be a job for coroutine. Basically some operations like *Instantiate* can only be done on the main thread. Usually multithreading is all about performing calculations. In my Make Minecraft in unity series (kzbin.info/aero/PLcRSafycjWFceHTT-m5wU51oVlJySCJbr) we perform calculations of parts of the procedural world using Tasks and this makes the game run smoother when moving around the map and loading new content. Hope it helps!
@f11bot2 жыл бұрын
@@SunnyValleyStudio Aw sad not working! But thanks for the detailed explanation, it was awesome! Gonna check the Minecraft videos to see it better in practice.
@ikjman12 жыл бұрын
Hi! Thanks a lot for your video. I have a question about something you did not cover. How do I block the main thread if the task has not been completed in X time or frames? I'm asking this because I'm trying to make a deterministic game, and I don't want any lag spike influencing the outcome of the game. I want to use this for heavy algorithms like pathfinding long distances. This is how I tried to accomplish that: public override void Update() { SetLightSourcePositions(); if (Time.frameCount % Constants.ShadowCalculateAfterFrames == 0) { List shadows = null; if (getShadowsTask != null) { if (getShadowsTask.Status == TaskStatus.Running) GameManager.Log.Error("Did not generate shadows in time."); shadows = getShadowsTask.GetAwaiter().GetResult(); RenderShadows(shadows); } else if (shadows == null) { shadows = new List(); } getShadowsTask = new Task(() => GetShadows(shadows, lightSources.ToArray())); getShadowsTask.Start(); } }
@ikjman12 жыл бұрын
This results in the error being logged, but the new task being fired before the old one has finished. I instead want to block the main thread until the task is finished. How would you do that?
@SunnyValleyStudio2 жыл бұрын
Hey! I am not that experienced with multithreading but what I would do is have 1) a thread that we run and that we have the CancalationToken reference to, 2) coroutine that would wait for the time limit and that would stop the thread At the same time keep in mind that you can just use a coroutine and split your algorithm into steps / batches of data. This way you could possibly return your best estimate of the result.
@shubhrojyotikabiraj83222 жыл бұрын
your complexity calculator can be used in anywhere right. To check how long it takes to execute.
@SunnyValleyStudio2 жыл бұрын
There are many different ways to check the performance (including the profiler in Unity). What I show in the video should be reliable to use anywhere where you only deal with the code.
@shubhrojyotikabiraj83222 жыл бұрын
@@SunnyValleyStudio alright thanks for replying 😊
@ryan3702 жыл бұрын
This works well, but I am still stuck in my project. I can't call any unity functions without getting an error saying "[function] can only be called from the main thread". However, I need to run Unity methods asynchronously. I need to render a render texture and save it as a sprite. How can I do this without killing performance?
@SunnyValleyStudio2 жыл бұрын
Hey! Things like "Instantiate() " or other native to unity methods can only be called from a main thread. Unity solves it by letting you call coroutine that do part of your task every frame ex create part of your map every frame (every X sec) instead of all the map immediately. If you have some calculations to do beforehand than it is best to run them on a separate thread. The solutions are - either wait for the separate thread to return you the data (how I do it using async await - you can also view section 3 of my voxel series to learn more about it) or you can create a Dispatcher that the threads will inform "please spawn object X" but its a hit more work. If you don't fancy doing a lot of reaserch use coroutines. Otherwise it really depends on what is your task. You may find Unity jobs to be a good solution.
@wisemiceclique4498 Жыл бұрын
Async does not generally mean that it runs on a separate thread.
@SunnyValleyStudio Жыл бұрын
You are right. Sorry if I made a mistake explaining it. I think Task.Run(..) make the code run on a separate thread but at the end of the day the Task class is responsible for "unblocking" the main "UI" thread whichever way is best.
@mikhailnikolaev99272 жыл бұрын
So, why would we really need this in a game? To load some resources in the background?
@SunnyValleyStudio2 жыл бұрын
Hey! In my 𝗛𝗼𝘄 𝘁𝗼 𝗺𝗮𝗸𝗲 𝗠𝗶𝗻𝗲𝗰𝗿𝗮𝗳𝘁 𝗶𝗻 𝘂𝗻𝗶𝘁𝘆 (about procedural voxel map generation) series I use it to generate the parts of the map that the player is getting closer to using the background thread. This was because I saw FPS drops when i did all this on the main thread. Generally you will not be able to use multithreading / job system unless you plan / develop your code for it. At the same time you always first create a single threaded game (with apps its easier because you know you need to fetch data from ex a server so you put it on the separate thread by default). After you know that you code is working but you can see a problem and you know it is YOU making a lot of calculation at the same time that is when you want multithreading. *With Unity jobs system it is a bit harder because they require you to use structs so if you don't plan for it from the start the refactoring process can take longer.
@Ermelious2 жыл бұрын
Is there any difference between this compared to Unity's Job System? Because both seem to be handling stuffs via multi-threads. This method I guess might be preferable to some since its leveraging on C#'s abilities instead of Unity's Job System which is still in their so called "experimental" phase.
@SunnyValleyStudio2 жыл бұрын
Hey! Job system forces you to design your code to be more data oriented (you have to use Native Arrays ets). When developing a game in OOP manner there and you discover a need for multithreading (you had to test your code on a single thread to know that right?) Job system kind of forces you to redesign you code. Async / Await also requires you to use immutable collections to output some data but they can still operate on objects so usually no code redesign is needed. On the other hand you have to manage (end) threads and handle how to cancel them. Jobs system is more integrated with Unity so if you know how it works you can design you code with it in mind. It should be easier to work with but you have to spend more time learning how to leverage it / how to design your code to work with it. This is just my opinion 🙂 I hope it helps!
@ShinichiKudoQatnip2 жыл бұрын
I cannot find the parallels follow up video 😢
@SunnyValleyStudio2 жыл бұрын
Sorry about that. The simple example did not work well with the parallel code and I haven't yet found a good example to show it. Sorry about the delay.
@ShinichiKudoQatnip2 жыл бұрын
@@SunnyValleyStudio oh no no, it is perfectly okay, I was just a bit too excited i guess. Take your time, will wait ☺
@Zicore472 жыл бұрын
Any Idea on how to profile tasks?
@SunnyValleyStudio2 жыл бұрын
No. Sorry. I am usually developing high-level game mechanics so profiling isn't my strongest suit. I will take a look at it if that is what interes you. Thanks for a suggestion! :)
@ggwp861811 ай бұрын
Is this going to work fine for a mobile game?
@SunnyValleyStudio11 ай бұрын
Yeah I think so. Its the C# that handles how the code runs on different devices. Worst case (ex in WebGL I think) you will experience a lag because the code runs on the main thread.
@ravanin3 жыл бұрын
Do you know of any practical examples? maybe some github project? I just don't know when I would wanna use async. Maybe just adressables.
@SunnyValleyStudio3 жыл бұрын
Hey! Actually generating map using perlin noise is a decent example :) any procedural Generation st runtime, saving your game data or sending data over the network will block the main thread unless we use asynchronous programming. If it doesn't convinces you I will use the same thing for the upcoming procedural voxel world tutorial where I create new chunk data as the player moves around the world to make it infinite. I will be starting the series this or next week :)
@ravanin3 жыл бұрын
It's a good example yes. but the way you're showing it, doesn't qualify as "practical" I wanna look at some proper projects not just a timer. Are you gonna use some of your previous procedural generation projects in the new series? Anyway looking forward to it. Keep up the good work!
@technoo48913 жыл бұрын
@@ravanin What do you mean just a timer, hejust said right now when and how to use it, on map generation or send data through internet and etc
@ravanin3 жыл бұрын
@@technoo4891 you sould probably google the definition of practical
@SunnyValleyStudio2 жыл бұрын
I have used async await my *Minecraft in Unity* series to prevent FPS drops when generating additional terrain. Here is the link kzbin.info/www/bejne/pYipe59ra65_ars
@marcinziajkowski38703 жыл бұрын
Why not IENUMERATOR ?
@SunnyValleyStudio3 жыл бұрын
I am pretty sure that a coroutine (if that's what you mean by Ienumerator) will freez your game when it runs when making any major calculations - ex generating procedural map in a Minecraft kind of game -> kzbin.info/www/bejne/pYipe59ra65_ars Anything simple would indeed benefit from a coroutine. Anything more demanding needs async or Job system.
@marcinziajkowski38703 жыл бұрын
@@SunnyValleyStudio So unity doesn't use multi cores?
@filipeduraes35252 жыл бұрын
@@marcinziajkowski3870 coroutines still works on the main thread, so it's not really asynchronous
@marcinziajkowski38702 жыл бұрын
@@filipeduraes3525 so if I call sleep() on main thread then Ienumerator will stop as well? As I understand, Await Async create new thread to execute method?