Brackeys: "And now, we are ready to try it out" Me with 5 errors: *"yes"*

"So you've made a game and it played nicely.." Me: umm

Oooo great one! I think this is one of the features *all* games need, but almost *no one* knows how to do it lol. Well done man! ⭐

5 years in and still this is one of the best save and load system tutorial that I found out there.

I feel a little sad watching the videos now knowing they stopped

Quick code review ;-) * Use using statements for classes that implement IDisposable (e.g. FileStream, BinaryFormatter etc.). Like previous commenters said. * Use System.IO.Path.Combine to combine paths safely. Paths are constructed differently on different OS. This avoids a lot of potential problems. * Use a helper method to convert from Vector3 to float array or better yet, make own struct that contains 3 variables and convert between these.

Thanks for not just going: "Hey guys, this thing from the app store will do it all for ya.. Bai o/ " This tutorial was actually helpfull!

You are the godfather of programming for me. Thank you so much for everything you do.

You’re amazing. As an artist I find your tutorials easy to follow. Thank you and your team of people. KZfaqs best Unity programming specialist. I’m inspired please continue this channel.

Why does learning stuff like this make me all giddy and excited?

It was simple enough, but also in-depth as well! Thanks!

Love it had to watch 3 different tutorials, Everyone else missed some steps, or didn't fully explain everything and i couldn't get it working. Watched this and now i can save my Gold x, Potions x a, and Apples as well as the position. Works great. Now i need to fully understand, Don't destroy on load. Thanks a lot!!

I really wish that every unity tutorial was by you, like you explain so well and it's so fun learning by you.

One important thing that is missing in this tutorial is to actually separate the data (PlayerData in this instance) from its FileStream cached data. In this video, it would be a function like: public PlayerData CopyPlayerData(PlayerData From){ PlayerData To = new PlayerData(); To.level = From.level; To.health = From.health; To.position = new float[3]; To.position = From.position[0]; To.position = From.position[1]; To.position = From.position[2]; return To; } The reason for doing this is to separate the data sent to the game-usable data from the Filestream data. Remember that you cannot generate an hard copy a Serializable class (PlayerData in this case) using = . An hard copy of a Serializable class is a copy cached as its own. It can only be done by using "new". So, when you do something like SerializableClass A = SerializableClass B, you're basically add a link reference from A to B. A becomes dependent of B meaning that if B cease to exist, A becomes Null and if B becomes Read-Only, A cannot be edited anymore. This is unlike something like float A = float B which makes A equal to B. Unity, and pretty much any game engine, are NOT able to generate an hard copy a Serializable Class because it ignores what's to copy. The only way to generate an hard copy (cached) of a Serializable class is to cast it as a new one. As such, SerializableClass A = new SerializableClass(); makes sure that A is an instance of a Serializable class of its own. When doing so, the class is obviously in its Default state, hence it's at that point that you want to copy its individual values (and by copying, I mean making its values equals and not just some soft copies).

Please, for the love of god, when you are working with a FileStream, please use a try-finally block and call "close()" in the finally clause. Otherwise, if your deserialize() fails, the file will remain open, which can lead to some super-weird and hard to debug effects.

Finally, after watching it for the 20th time I understood the flow after doing a dry run!! I wish Brackeys returns!!

Quick tip: Look up how to use the using() statement in C# when working with unmanaged resources such as files. The good news with using the "using" statement is that the file stream will be guaranteed to be closed if you forget to do so yourself.

This is a great tutorial. I found it much more useful to use lists rather than arrays for breaking up the Vector3's, however. When you save out, you can break the V3 into separate floats, and then reassemble them on load. This has been particularly helpful for me in trying to save/load multiple groups of item data in a single file, as opposed to just a single item as would be possible with the former method. Also to note it's relatively easy to go from where he has started, to a system where you can specify save/load filenames, and read out items from a directory. If anyone is interested, I can post the code for all of that.

12:10 If you have it set to automatically load data, this will log an error the first time the game is played. You could of course have a load option and disable that if the save file is not found.

Huge shout out, Im glad that you are explaining every single line of code, it really helped me.

This is perfect timing! I was about to start working on a save system over the weekend.

In your save chain you have the SaveSystem handling the data, it's simply passed the player. In the load chain you pass the data itself back to the Player class and let that class handle the data object. You need to pick a convention. Either pass the player to the SaveSystem.LoadPlayer function as well and have that class manage the data, or pass the already formatted PlayerData object to the SaveSystem.SavePlayer function instead of the player.

There is a way to save Unity specific types like vectors, sprites, audio clips, etc. As you know, this can be done with JSON, but not be secure. So instead save the class in JSON format and then convert it into binary data. That let's us save a larger variety of fields and is nearly just as fast. Also perhaps XOR the binary with a secret key since anyone can convert binary back into original data. Or if you want to be really secure, encrypt it with AES. Good tutorial, quick and to the point. 👍

I remember doing this a year ago and attempted to implement it without understanding so much that it broke my game. Not exactly but I had to remove alot. It was working but I did something in the script after doing some of my own additions. Now I'm here again with a little bit more of knowledge.

Funny Fact: You can adapt Vector3 and even your own scripts for the formatter to save them to binary, it's a little bit longer, but its really useful when you need to save multiple objects and their positions

I'm building my first game using Unity and this is exactly the simple save system my game can make use of, since it's not going to be huge. Love these concise videos!

It's a bit more manual, and you have to update the methods every time you add data that needs to be saved/loaded, but another method I like to use is a BinaryWriter: using UnityEngine; using System; using System.IO; public static class ClassThatSavesThings { public const string PLAYER_SAVE_PATH = @"C:\The\Path\To\The.file"; // The '@' automatically escapes backslashes. public static void SavePlayer(Player player) { // Using a "using" statement causes the stream to be closed automatically when exiting the using. This is important because nothing is really written to disk until the stream is closed. using (BinaryWriter writer = new BinaryWriter(File.OpenWrite(PLAYER_SAVE_PATH))) { writer.Write(player.level); writer.Write(player.health); writer.Write(player.transform.position.x); writer.Write(player.transform.position.y); writer.Write(player.transform.position.z); } } public static void LoadPlayer(ref Player player) { using (BinaryReader reader = new BinaryReader(File.OpenRead(PLAYER_SAVE_PATH))) { player.level = reader.ReadInt32(); player.health = reader.ReadInt32(); player.transform = new Vector3( reader.ReadSingle(), // "Single" is just another name for "float" in this case. It's technically the other way around, but whatever. reader.ReadSingle(), reader.ReadSingle()); } } } Of course, this is a quick and slightly dirty way to do it, but it gives you tons of control over exactly how the data is formatted in binary. The main thing to watch out for is ensuring you read/write data in the same order, otherwise you'll get wrong values for sure. You can also use a BinaryWriter to write to a MemoryStream instead of a FileStream. This is great when you want to get the binary as an array of bytes (byte[]) which can be used to convert your data into Base64. I wrote this in a plain text editor, so there may be some invalid syntax.

Watching this today so my brain can recreate this during the night, so I can simply forget everything and have to watch this again tomorrow when I'm actually recreating this

You should use the "using() {}"-statement when working with classes implementing IDisposable. using(FileStream stream = new FileStream(path, FileMode.Open)) { // Do Something with the file } This way the file handle will be closed even if an exception is raised from the code inside the curly brackets. You don't need to call .Close() or .Dispose() yourself. Also writing a binary file might be more secure than a plain text file, but in the end, locally stored progress can always be changed, we can only make it more difficult.

Thanks man! I have watched this tutorial several times always afraid to tackle this. But now that my game has developed to the point that I need this I had to tackle it. What a surprise how easy it was. I started by making checkpoint for when my player dies and it takes me right back to the latest checkpoint. I learned a lot.

*takes newly made binary save file and converts it online to edit my save file* Brackeys: "Am I a joke to you?"

What makes me so happy about the way Brackeys used to teach us is the way if shoes us the flaw first and then shows us a better way to do it. Like at 9:25

Love your tutorials!! Can you make a guide on in-game purchases through unity??

brackeys with the guardians of the galaxy soundtrack in the background while i develop a game about cats with machine guns. doesn't get much better than this

Nice tutorial as always, really appreciate you linking to assets and the humor and fun you bring to your vids!

Thank you Brackeys. I just finished my freshman year as a Computer-Engineer student. I really love programming and I am making little games (alongside from other projects) in my free time in hopes of improving my abilities. I am not extremely knowledgeable at the moment so your videos are extremely helpful. It is quite interesting to me how what I learned in University about File Handling, albeit in C and not in C#, turned out to be quite useful here. I thought Unity would use a completely different way to handle the game files. It was a nice surprise to see they are not doing that (apart from a couple of different things like _persistentDataPath). It feels really nice to know that what I am learning in University can actually be applied in what I do. I know, it is silly for me to say that, because that's what Universities are for, but sometimes it feels like I am just wasting my time there, being taught things that I will never use in everyday life.

That momet, when you've recently finished your Saving script and a tutoriel about saving/loading by Asbjorn shows up👍

Finally! It took a few days, compared to the pause menu and the main menu. (NOTE: I put the save and load buttons in the pause menu.)

Yeeee that was I needed! *thank you Brackeys*

Learned alot from this, thanks

Could you maybe in the future make a tutorial on the " Easy Save " plugin you mentioned later in the video?

I am very excited! Super tutorial, now it's working with my invector shooter template. You are really awesome!

"So I've gone ahead and set up a simple example level" Me: uuhhmm

This guy made Unity look like an app for pre-schoolers :))) I miss Brackeys!!!!

This tutorial fills me with determination.

Your tutorials are amazing! Descriptive and clean, really suitable for beginners like us. Thanks a lot :)

Me - nowhere near completing my game Also me - *I think I should add a save function*

this guide saved probably many days of my life keep it up!

Just some friendly advice I was running into an IO Exception when loading or saving too quickly, Stream.Close() was taking too much time and I would eventually try and open while it was trying to close, an easy solution was using (FileStream stream = new FileStream(path, FileMode.Create)) { formatter.Serialize(stream, obj); }

One day I'm going to understand all of this, and it's going to be glorious

Hey man ur Awesome, Im ending a work of my carreer and it videos help me a lot. Congrats from Spain !

Brackeys guy, your tutorials are amazing. You make things so easy to understand. Thanks sooo much for all your great tutes.

5:10 - Visual Studio has a shortcut for creating this class, simply type: "ctor" and press TAB twice and it will generate an empty constructor class, but if you have alot of properties it's better to use "CTRL + ." and select "generate constructor", this way it will bind the values to the properties of the class, and for more organization, typing "///" and TAB twice above the class it will create a commented code with the right syntax with all the properties that's the constructor takes and their implicit type, so that with IntelliSense when using the class, you just mouse over the property and with will show you a resume of the class (it also supports own comments on the class, like "Note: this class ..." Hope someone finds it useful

Always coming back to this tutorial, we will miss you king! ❤

You should not use this anymore though. Microsoft itself is warning people from using the BinaryFormatter. From their MSDN: "The BinaryFormatter type is dangerous and is not recommended for data processing. Applications should stop using BinaryFormatter as soon as possible, even if they believe the data they're processing to be trustworthy. BinaryFormatter is insecure and can't be made secure" This video should either be taken down or have a warning.

Love your explanation for the details.

This is neat and definitely one of the more understandable binary save systems out there so great job on that, loved the video. I do have one question, how would you go about extending this to say an inventory? While brainstorming, I thought you might be able to have a library of items to reference and store say an integer value as an id for each item to access it, however with large games like Skyrim I feel this could become tedious.

I have been programming for 3 years and never have i ever used a class and the only time i used a class was to store functions and keep my code clean. This helped me lay the foundation to understanding classed

Make sure the function in PlayerData is the same name as the class and is NOT a public void, otherwise there will be an error in the SavePlayer function. I had to comb through my code to find that mistake xD

I freaking love your face bro! It's always so pleasant with that smile like your subconsciously encouraging us in our individual projects. Thank you for your hard work with these vids and please don't ever change.

Thank you! Perfect timing! I would really love to see how to extend this capability to AWS for cloud saving as well.

Very nice video. Extremely helpful without any unnecessary additions that might potentially confuse. Thank you.

is it me?, or does brackey sound more friendly than a Canadian

Nice Video, small shortcut I always use: CTRL+D will duplicate the line your cursor is actually in OR the part you have selected, instead of doing COPY+PASTE all the time when you have to duplicate anything in your code...

This doesn't work for me, for some reason my script isn't creating the file. EDIT: I fixed the problem! Basically, you cannot store your files inside of a folder, it has be the persistentDataPath and then + filename, no folders.

Excellent video and description of the process. Exactly what I was needing. Keep up the great work!

"I'm gonna write fun, just to make this tutorial a bit more fun" lmao x'D. Thanks for the vids

SaveSystem should be a singleton with a single formatter instance. You should get used to using (var fs = ) {}, that way you don't have to explicitly close the FileStream. I love your tutorials, bought some courses but none explain as good as you do, keep up the good work.

If your Game dont find the Files Do That: In your "GameManager" Script Void Awake: try { load...(); }catch { save...(); load...(); } // So if you dont Find the Files the Game creates the File and then load it again // Idk if you need load...() at the End but ... you know

Great Tutorial! Had to redo everything because I got stuck but after that it worked perfectly.

This is a great tutorial! i just had one question, I am new to coding. I wanted to reset the player position when a new scene is loaded and can not seem to do it correctly. How would I go about that using this saving method?

Also I love how you're displaying the binary as hexidecimal and actually describing it as 0's and 1's but it's clearly a-f 0-9 alphanumeric

14:36, bruh i spent 5 min trying to figure out what was wrong with my code then i played the video for the next 5 seconds and proceeded to facepalm

brother, file handling in c# ke concept sikhane ke baare me bhi sochna - PLEASE 🙏🙏

I’ve seen Nintendo use that binary system a lot

I had to watch this through a couple of times but I understand it much better now. thanks for the great tutorial!

There is a much more simple way to do this, it’s called playerprefs, I think brackeys knows it, could you make a vid on player prefs, I think it would help a lot more people. :)

15:20 You could write: transform.position = new Vector3(data.position[0], data.position[1], data.position[2]);

2:48 Has no one noticed the binary file depicted actually has Hexadecimal values written on it :3 but still jokes aside Great tutorial! thanks man!

I Like The Way That Brackeys Moves When He's Instructing Stuffs!

Can you make a tutorial how to input data to google spreadsheet in unity and use the data from the google spreadsheet in unity?

Thank you so much for this awesome HIGH QUALITY simple tutorial 😝 your voice is soothing lol

How would you save and load if there are multiple instances of the same class that all inherit from MonoBehaviour ??

Awesome tutorial man, thank you so much!

Hi, thank you much for this tuto, I am at a point building my game where i need the player to save his progression. Unfortunally, the file is not saved... Trying to find why... (of course my scripts are identical to yours.) M. D.

Great tutorial! this was very important thing for my game. thank you very much

Hey Brackeys, I know this is an old tutorial, but I got a question: This works just fine until I build and run my project. Everything works fine in the editor but no save information carries over when ran on build... any suggestions?

Just what I needed. Also good thinking by the Unity devs to make "Application.persistentDataPath" for easy use.

10:34 If I enter player here (I use "allTimeScore" but that doesn't matter) I get the error message : The name "allTimeScore" is not available in the current context. I've been trying to find a solution for hours, I did everything the same way. I don't know what the reason is!

In the PlayerData script, how does that script find the Player? Like, its a serialized class, so i cant just grab the GameObject

Show us how to make a fog of war effect for an rts game.

I'm having a bit of trouble getting the load function to work automatically. I tried adding a script to a gameobject that calls the load function on void Awake() but that doesn't seem to be doing anything. Could it be that saving isn't working correctly either? I'm not quite sure what exactly I'm doing wrong.

how do you do load a save/game if there isn't one to begin with?

Something you can do in visual studio, if you know the name of the Type you want (BinaryFormatter) you can type that in, have your cursor over it and you can press "ctrl+.", this will bring up a list of includes that contain that type and you can just select it from there.

I'm just 3 minutes into the video, but why not just encrypt your .json files?

It's amazing how much you have to compensate to achieve equality. You are a very shiny dude, keep up the good work.

need some help. This wouldnt work when I built to android

Even if brackeys isn't the top of the search, you find his video anyway

YEEESSSSSS FINALLY det tog dig lidt for lang tid :D

I really enjoy watching your videos you always explain everything