Thanks for watching! 🙂See below for some important info regarding this tutorial. ⬇ ==1. WebGL games will not work right out of the box with this tutorial== In a WebGL game, you don't have direct access to the computers file system and therefore won't be able to save like we do in this tutorial. To properly handle data for a WebGL game using this system, you'll need to write a 'WebGL Data Handler' to save your data to a WebGL compatible data storage instead of a file system. This is essentially the 'Cloud Data Handler' I briefly refer to in this video when talking about how the system will work. Unfortunately, I'm not knowledgeable enough on WebGL myself to be able to recommend an alternate way of storage; however, most cloud-based storage systems should work. ==2. Does this work on Android?== The short answer is - yes with some considerations. I haven't tried this on Android myself; however, I have heard of several others that have gotten it working. In certain mobile versions, OnApplicationQuit() is not guaranteed to be called in the Unity lifecycle. Therefore, you may want to additionally save the game in OnApplicationPause(). Below are a couple of threads that dig into this issue in a bit more detail. Stack Overflow - stackoverflow.com/questions/64140744/unity-onapplicationquit-doesnt-work-on-android-all-the-time Unity Forum - answers.unity.com/questions/824790/help-with-onapplicationquit-android.html In addition to the above, there have been claims that Application.persistentDataPath is a bit finicky on Android. Details on this are a bit long to list here; however, there is a great FAQ post on my Discord server with information regarding this issue and some solutions for it. ==3. Ref Keyword is not needed-== As some have pointed out in the comments, you do *_NOT_* need to use the *_ref_* keyword (7:22 in the video) at all. By default in C#, non-primitive types are automatically passed by reference and for what we're doing the _ref_ keyword is not needed. It can actually make the GameData object a bit more vulnerable than we need it to be and I would recommend removing the _ref_ keyword. This was a misunderstanding I had about how C# passes by reference. My apologies to anyone this inconveniences or confuses. Thank you to those who pointed this out! I also address this in a bug fixes video which can be found here - kzfaq.info/get/bejne/r7qHg8aa0qfIpo0.html (see the "Removing the 'ref' keyword" timestamp) ==4. Other FAQ regarding this tutorial== I have other FAQ's regarding this video and the entire Save & Load System series on my Discord that can be found here. ➔ 📱discord.gg/99gcnaHFf9

Do you understand how great this tutorial is? I'm going to college for game development and this video was leagues above the "teaching" some of my professors manage. Clear voice, understandable naming convention, comments... Now that deserves a like and sub. 👍

My man just showed how coding can be beautiful like an art form! I'm a junior solo dev learning Unity + C# and I was just blown away by how well-explained and clear everything was, even though there's so much to unpack here! THANKS

this man single handedly makes some of the best tutorials out there

So far in my game development journey, save systems I have almost given up on since all tutorials I go through to learn it end up in errors everywhere or the save system being unreliable in the long run. This tutorial as been THE FIRST to land me in a position to not only save efficiently, but securely as well. Thank you for helping me implement a solid system for my game.

I followed this tutorial religiously for 3 days trying to get this to work without changing any part of my game. I've only been coding for about a month but after my 50th re-watch i made it through!!! For such a complex system, you really do break it down and make it easy to follow. THANK YOU

For future reference, there is a type I found that works exactly like a Dictionary, and it is called SerializedDictionary. You can save this through JSONUtility the same way you would imagine for a regular dictionary. Dictionary RegularDictionary = new(); is the same as SerializedDictionary NotRegularDictionary = new();

Fantastic tutorial. Just before this, I had no idea how to even start with saving and loading. Now I feel as though I have unlimited power.

I hold my breath until this tutorial ends. This tutorial is simply breathtaking. Thank you.

That is an AWESOME tutorial! (and the best part is that the codes actually works!) Thanks a lot!

This is by far the best video I have seen for unity save & loads. Not just by content, but by the way you deliver it.

I think this is the best tutorial I've ever seen on KZfaq on any subject. I was absolutely hyped away when I watched it because I couldn't stop being blown away by how cleverly everything is explained and how it all fits together so beautifully. I learned so much about C# and Unity from this one video. Very well done and thank you so much!

what a great video. Fast, straight to the point, well structured but still at a pace where the viewer can follow and understand whats going on. Also very clean and easy to follow code. Great job mate and thank you so much!

amazing tutorial really helped even after 2 years :D

Bro, thank you very much for that little show case on saving Dictionaries to Json. Bless you!

Straight up best tutorials out there imo. The way you structure the intro with showing uml snip relations is really great.

Give this man an award for this tutorial

One improvement you might consider is using an event to trigger saving. Since you already have the data persistent manager as a singleton, everyone can talk to it directly. You can cut the middle man with the interfaces and getting objects of type, and just trigger the event. So it would look something like this: Inside the manager class: public event Action onSaveTriggered; And then in the SaveGame method, all you have to do is: onSaveTriggered?.Invoke(this.gameData); Then basically any class that needs to access the game data implements a function: OnGameSaved(GameData data) {} And then it subs it to the above: Start() { DataPersistenceManager.instance.onSaveTriggered += OnGameSaved; } OnDestroy() { DataPersistenceManager.instance.onSaveTriggered -= OnGameSaved; } And you do the same thing for loading the game. You pass the loaded game data, and all the classes that are subscribed can open it up and get what they want from it. But yeah I get why you'd do it the way you did for a tutorial, since the above might be considered a tiny bit more advanced and you enter the world of events... although they are super useful for games, since so many things in games depend on events that happen in the game world.

Incredible video. Using interfaces like this is definitely a good and scaleable way. Also really cool thing with the GUID I didn't know. So far I've build my own custom GUID generator but this is much more useful. Also THANK YOU for not using BinaryFormatter, every old tutorial about a save & load feature uses is, even new tutorials so very good that you show a different approach on encryption.

Hey man! amazing tutorial, thanks for this great video. Keep it up!

Honestly once explained it's fairly intuitive. Thank you for breaking it down so nicely for us newbies! Can't wait to play with the full version

I rarely comment but man this is exactly what i needed and now I don't have to figure it out from the scratch. Thanks!

Super thanks for this amazing tutorial! 🌟 Your clear and detailed explanation helped me successfully implement a saving system in my project. 🚀 I was stuck on this for a while, but your video made everything so much easier to understand. Keep up the great work!💪

Dude, honestly you're my hero right now!!!!! Thank you!!!!!!!!

I was searching for proper design for game data saving. This is the best.

This by far one of the best Unity tutorials i’ve ever seen! The step by step, detailed explanation is very well done and clear! Subscripting right now!

Hands down one of the best tutorials I've ever watched!

Seems really simple and straight forward. Will be using this in my next game

It's my first time creating a game. It took me some time to get it since I wanted to save and load in a few different scenes but I finally got it working!!!!!!!! Thank you!!!!

Holy cow Trever, you're a life saver. Thanks so much for the tutorial. Also your voice is so nice to listen to 😅

Holy! This is the best save tutorial I seen! Good job man, can't wait to watch rest of your videos and learn from them!

thanks you bro. you helped me so mush, your tuto are really great and easy to understand for a french like me😅

Thank you so much! Great tutorial

As written in the comments before, this system is more reliable and versatile than what you can find out there (and in the university i´m going). This is Awesome. Thank you so much💪✌

I like the way you organized the video contents! Your Unity tutorials are my favorites so far. Can't wait to see more videos! 😍

Im only half way through but boy have i learnt alot from this video. You are an amazing teacher, thank you so much!!

One of the best tutorial i've seen! I knew nothing about dictionary and JSON before that and was able to understand and make it work! Great work!

You are the best!!! 💗

Amazing video. Good job!!!

This is my favorite method to store data now. Brackeys' tutorial was decent, but too basic and uses BinaryFormatter. This one not only explains things well that even an intermediate coder can understand, but the interface-saving method is just 999 IQ. 600th comment btw

thanks for making this video! I already watch a bunch of video about save and load system in KZfaq, and by far it is the clearest tutorial out there!

Amazing, efficient, modular. Great work, leaving a comment for the algorithm.

Awesome to find rising new diligent creators! Keep it up good sir.

I can't believe literally no one is talking about how satisfying Nice tutorials voice softs.

So underrated channel! Keep up the good work and thanks for the tutorials!

Your channel is super underrated. SO happy to have stumbled across it. I hope you continue to grow!

This is the right way to do tutorials. Well done

FINALLY I FOUND IT! i found a tutorial that is good and does not use the Binary format Thanks so much man. Keep it up!

Very good and clear tutorial on the topic with cool follow-up (about android and stuff), thanks a lot :)

Ah, for a JS->C# switcher it's just amazing. Can easily work with node js server now, thanks. So glad I don't have to write it by my own.

This is honestly one of the best tutorials I ever watched. Everything is explained super well and I love how you broke down how each component would be working with each other at the beginning of the video. I also super appreciate you uploading your code to a github. That helps a lot haha. As someone who is new to game dev for my senior project, it's amazing how something as complex as save and load systems I was able to implement in about 30 min. Thank you so much again and good luck with everything you are doing.

This was the one to actually help and teach everything better than the others. this Tutorial was the best so far on saving on json than the others in how this was so simple but yet so understandable and it just makes everything easier. thank you brother❤ love from Egypt❤

Holy crap this is such a fantastic tutorial. A lot of tutorials on this topic don't talk about how to save multiple objects' state (I needed to save door states in my game), and while I kind of figured out to use unique id for each object, I didn't know there is a way to generate them automatically. You also covered how to make dictionary serializable and talked about the BinaryFormatter issue. One thing I changed on my code is I have a script to check all saveable objects with id just to make sure they're all unique. The guid generation system looks like it's bound to human error when duplicating the objects. Other than that, great video! It's very helpful. Thank you so much for making it.

OMG!! That is the best tutorial on youtube thanks you so much for this video I hope you will continue making video.

You are the best Trever! I do appreciate all your videos and specially your kind help on your discord channel for my specific coding issues. I must say that many youtube instructors are hiding some tricky points on the tutorials. what I love on your tutorials YOU ARE HONOST! keep it man. Thank you.

Dude holy shit this tutorial is utterly amazing

Such a clean and well-made tutorial. Props!

Nice and thorough tutorial. One thing I did differently was to use a scriptable object to store my persistent data rather than using a singleton. Still works!

Thank you very much for this tutorial. It helped me understand serialization and the JSON format.

This is a really great and helpful resource. Thanks so much!

This was a truly amazing tutorial. I couldn't get the dictionaries to work correctly for object activation though. So instead, I found I was able to use a list to achieve this the same way where instead of a GUID code I could use id as an index for the list.

best tutorial i've seen so far on this topic! thank you so much

This tutorial is absolutely amazing. Genuinely perfect dude

oh my god you just saved me weeks worth of time, you beautiful bastard .

Perfect tutorial! Best solution I could find and very well presented

Thank you, this is very useful, I hope to use it in my project. Keep making more great videos!

Insane well structured Tutorial. Love the Format of this Video!

man I missed this kind of tutorials lol. Great work here, thanks!!!

Awesome Trever! You really did it!

Got this working perfectly in my game in less than an hour. Gracias.

Thank you for making such a detailed video, really enjoyed the Design segment, just a well made video overall.

Thank you so much for the video! I got it working and it's perfect for my metroidvania.

That's a tutorial very well put together. Looking forward for more like this one mate.

Absolutely loved this tutorial. The interface setup just feels like the right way to do saving in unity. Love it.

your tutorial is perfect, thank you so much! Subscribed!

Loved the content presentation here. Really excellent work. Thanks for supporting the community.

The [ISerializableCallbackReceiver] dictionary is also very useful as it allows to edit the dictionary in the Unity editor screen

THANKS FOR THIS IV BEEN SEARCHING FO SOOO LONG

Awesome tutorial! Keep up the great work, very easy to follow along and implement in my own project, I hope you get more subscribers!

Thank you for your tutorial video, this is the video I have been searching for a long time, both detailed and comprehensive with easy-to-understand instructions. I hope that you will create more tutorial videos in the future. Sincerely, thank you.

This is probably ***THE*** best tutorial ever, and it helped me a lot, but how do you save from a script with IDataPersistence thing on it because Idk how to do that

Excellent and very helpful tutorial. You type really fast :)

firstly I would like to wish you well and to say a huge thank you for uploading these videos as they have been an invaluable resource to

Dang. I was hesitant to watch because shaped by rain studio sound similar in nature (get it) to sunny valley studio 😂 This is great. My only question is, if you are using the guid method for the objects, you would have to instantiate the guid for instantiated objects. (I placed a furnace, keep the location of the furnace and it's contents) Also, you might check out Chris Tutorials where he used a serialized dictionary class made by a university (can't think of the name) it bases off the main dictionary class and has a few extra methods that allow it to serialize in the editor as well like a struct can. I was surprised you didn't use a struct but the serialization makes a lot of sense. Incredibly video to keep in mind. Watching another by Dan Pos before I decide which pieces to take from each. This was incredible.

this is the best one i've seen, thanks for this man!

Thank you for this! Really clean architecture and code, very good tutorial overlal

Super useful, exactly what I was looking for. Thank you!

Finally a well designed system. Thanks!

Exactly what I needed!

This is the best tutorial for sure. I'll go build some levels for the casual game

I LOVED THE TUTORIAL, THANK YOU VERY MUCH ❤❤❤

These tutorials are the best I've found, thank you!!

9:21 - you can easly do dftype().ToList() to return new list of objects without creating it in code and making code shorter

Hi Trevor! Congratulations! One of the best tutorials I ever seen. Will definately join the discord to share work with you. Liked all your videos and subscribed. Again, great work. Best, Oscar

My man's dedication is over the top!

Really cool and useful tutorial. Not sure how useful this setup would be for a more advanced game where a lot of the things is highly dynamic. A game im working on im currently implementing some save systems but there are so many things that can change like trees being chopped down, rocks mined, crops planted, trees planted etc. I love how your system is setup here so gonna research it further someday soon

Thank you. Subscribed

I LOVED this video. It help me so much with the game I'm currently working on. Thank you so much!!!

This was so so useful! Thank you so much for making it!

spot. Great content my man