Realm-dotnet: Unity Support

[kristiandupont]

[kristiandupont]

During my last attempt, making unity work was successful once we switched to .net 3.5, but there were two issues: on windows, I had to run the build in the debugger for Unity to not crash. On OSX, trying to build for iOS, I couldn't make it move the project into xcode (xcode would crash). These issues should not be show stoppers but they are things to look into.

[juggernate]

:+1: Exciting! I love using Realm in my Swift projects and I would be very interested in using it for my Unity projects. Do you foresee many hurdles with Unity's IL2CPP?

[fealebenpae]

I'm not sure anyone on the team here has enough experience with Unity to be able to say for certain whether we'd have any difficulties because of the IL to C++ translation, but I for one am excited to find out.

[dsgarage]

Great!!
Unity is .Net2.0 doing. Are you sure you want to support this version?

[ShotiQ]

pleaseeeeeeeeeeeeeeeeeeeeeeeeee unity support

[dasako]

Does it support Unity yet?

[AndyDentFree]

No, sorry, we do not yet have Unity support as of late August 2016.

[dasako]

World is waiting for it...

[mgrider]

I would totally use this.

[sandolkakos]

I'd love to use Realm in my Unity projects too. Awaiting 👍

[kristiandupont]

Unity developers, which platforms are you primarily aiming to target?

[favoyang]

By ordering: iOS, Android and web.

Cheers,

Favo

Co-Founder of
LittleBigFun - The Boy and Girl Indie Game
Studio.

On 10月 26 2016, at 7:05 晚上, Kristian Dupont [email protected] wrote:

Unity developers, which platforms are you primarily aiming to target?

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[dasako]

iOS, Android and Nintendo Switch.

[negue]

Android, UWP and iOS

[Raydekk]

Android and iOS

[johnpudd]

iOS and Android here.

On Thursday, 27 October 2016, negue [email protected] wrote:

Android, UWP and iOS

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[noughts]

Android and iOS

[mgrider]

iOS, Android, Windows/PC, various consoles. (But you don't want to support consoles.)

[sandolkakos]

Android, iOS, Web and Standalone (Windows, MacOSX, Linux).

[phillipeaam]

Android, iOS, Web and Standalone (Windows, MacOSX, Linux). ²³!

[JeffersonFerreira]

UWP and Android :)

[tallesborges]

Android and iOS

[ryangullotti]

iOS, Android, Windows/PC

[8beat0405]

We're really waiting for this.
Please update your working progress so we can choose what to use for our next project.
Thank you.

[sandolkakos]

@kristiandupont
Any news about Unity Support? My team will start a new project in the next months where we would like to use realm :)

[kristiandupont]

Sorry, there are no news to report yet. We have other issues that are currently higher priority. We will keep this thread updated when we start looking into Unity.

[sandolkakos]

Thanks for keeping us informed.

[8beat0405]

Nice to hear from you, Kris.
We hope to hear good news next year.
Happy New Year :D

[amirhgh]

Is there any plan for adding Unity support?

[nirinchev]

Yes, there is - we are in the process of migrating our assemblies to .NET standard. Then, Unity will need to add support for that (which they promised they'll do). However, we still need our platform specific core build, so even after unity migrates to .NET standard, we'll only support it on platforms our core runs (iOS, Android, macOS, Linux, Windows desktop, UWP). Of course, other platforms can be added if there's enough interest.

[hikarivina]

Android, iOS, Web and Windows, MacOSX
👍 1

[sandolkakos]

Hi folks, did somebody managed to use Realm with Unity after the new Scripting Runtime Version ".NET 4.6"?

[maziarz]

Any updates on Unity support?

[pvn-anh-pham]

Hope to see it with Unity. Totally worth it!!

[Haegon]

Unity3D and Unreal support plz...

[zzmingo]

Unity please.

[stopiccot]

+1

[JimmyDeemo]

We would use this for Android (+ Amazon), iOS and Facebook Gameroom projects.

[hanniiel]

Any updates??? (Android, IOS, PC Mac)
We really want to update LiteDB to Realm 👍 please make it happen :)
Best regards!
Keep the great work!

[jlubeck]

Tagging along for news.
Targeting iOS and Android

[burcsade]

Crossing fingers here, developing for iOS and Android.

[mahdisml]

i think we can use Realm .net Database in Unity3d 2019.1 version ! :)
Because Unity 2019.1 Support .NET standard 2

[XDarinor]

Unity 2019 supports .NET Standard 2. But Realm still need to wrap the native c++ core to run? This means that can be of course used on Android e iOS, but I think it will not work on Switch and other gaming platform. Even if Playstation 4 runs on Linux, the buildchain can be different. The only plausible gaming platform that can be supported it's XBOX One, as it uses UWP as a base to work. Anyone have experience using Realm on a gaming platform different from desktop PC and mobile devices?

[CrandellWS]

well let me get notified on this I guess

[nirinchev]

@XDarinor that is correct - when we decide to ship Unity support, initially we'll roll it out for platforms we currently support (iOS, Android, Windows, macOS, and Linux). Obviously we can extend support to other platforms but that will depend a lot on customer and community interest.

[sandolkakos]

@XDarinor, do you have a prevision to give us about when could we start using Realm on Unity?
The biggest part of the Unity Developers are developing for Android, iOS and Windows, so release it and let all of us be happy. Later you guys can release for other platforms. 😝

[hanniiel]

You got my interest :3, I really wanna use Realm (currenly using LiteDB) but also MogoDB mobil version is coming so....

[darkwater84]

@nirinchev can you give us a page to make a petition?

[hanniiel]

https://www.mongodb.com/realm what about this??

[chrisk414]

Hi,
I just learned about Realm and very excited to try but I found myself disappointing soon after.
Realm advertises big on mobile as the best solution, yet it doesn't support Unity. What gives?
Unity is probably the most popular mobile development platform and it's still not supported for 4 years?
Is this something you will never do anything about it? If so, I would not hold my breath any further.

Last a couple of days, I spent lots of time trying to make it work and all my efforts failed.
However, I made some progress. This is the current state.

There are two problems. 1.

1. Fody will not work on Unity: After pulling lots of hair, I determined that Fody on Unity will not work, therefore I had to create an external DLL and bring it into Unity.

2. Unity will freeze when the assemblies reload: Bring it into Unity will work for the first run, however, clicking on "Play" the second time will freeze Unity.
   This is because Unity will try to reload the assemblies but the DLL(I believe it's realm-wrapper.dll) won't reload. I think we need to find a way to reload DLL or make the DLL stay resident so that it's unaffected by the assembly reload.

I really hope Realm support Unity soon, if not at least resolve an issue about the freeze. This will at least get us going while waiting for the better support.

Thanks.

[chrisk414]

@nirinchev

Yes, there is - we are in the process of migrating our assemblies to .NET standard. Then, Unity will need to add support for that (which they promised they'll do).

What they promised they'll do is fulfilled. What's the status on this? Is there a person who is actively looking into this? I'll have to figure out if I'll adopt Realm.

The current problem is that Realm.dll use P/Invoke calls to realm-wrapper.dll and it makes Unity to freeze when trying to unload realm-wrapper.dll.

A bright side is that it runs fine for the first run, and reading (not writing) from realm doesn't seem to call realm-wrapper.dll and it doesn't cause the freeze.

Until Realm supports Unity officially, I have to figure out a workaround. I think there are two workarounds.

1. Is there a way to disable the automatic sync? I would like to find out if there is a way to manually sync. I'm aware that when I do the manual sync, I need to restart Unity.

2. Just use a local realm file for Unity and create a separate daemon that syncs between the local realm file and the realm server. Is it possible to make such a daemon that can sync only changed objects?

I guess I prefer workaround #2, but I would like to know the answer to #1.

Please help make this possible. I'm sure there are tons of Unity users dying to use Realm.

Thanks.

[nirinchev]

We don't have anyone currently working on unity support, but is something that we're evaluating. You can keep an eye on the roadmap for updates.

[chrisk414]

Well, I expected some answers to my question above but the answer is flat. hmm..

Anyway, let me ask you again.

Right now, I can only use Realm as a local db and I would like to know if there is a create a daemon that syncs between the local and online Realm.

In theory it's possible but I find that accessing local Realm while it's being used by other app creates freeze. I can't even edit using Realm Studio when an application uses it. I believe it doesn't mean to be designed like that. If it is, I'm very disappointed with the current limitation and it's almost unusable.
You should fix this freeze at least so that I can do something with it until the full Unity support is in.

Oh well..
According to the roadmap, additional platform support will start toward the end of next year.
That's pretty depressing to know, specially this topic has been opened for 4 years and nothing has been done on it.

Now that you have MongoDB backings, perhaps you should hire Unity specialists now instead of waiting for another year to get started.

I don't think you can say you are big on mobile without Unity support these days.
My two cents.

[nirinchev]

If the issues with freezing you describe occur in a Unity project, then there's nothing we can do about it until we have official Unity support.

Regarding official Unity support, as I said, no one is working on it at the moment. We do have plans to expand the platforms we support, but we're not in a position to commit to a public timeframe. If you have a critical deadline by which you need to be able to run Realm in a Unity app, please reach out to your account executive or the sales team to describe your project requirements and deadlines. They may be able to give you a more specific roadmap.

[chrisk414]

Ok, I get that you don't have a specific plan to support Unity now. And I'm really hoping that you would sooner than later.

I asked the question a couple of times already and let me ask you this question once again. I filed a support ticket but I was directed to ask on the forum. And it keeps going into the drain.

While an application is accessing local Realm, another application cannot write to the same realm.
This includes Realm Studio. It is not related to Unity at all but I need to figure out the workaround.

What I'm trying to do is to create a daemon that syncs between a local Realm and online Realm while the local realm is being accessed by an application.
This way, I can make Unity to read/write to local db while it gets synchronized to the online Realm.

I'm sure you didn't design Realm so that only one application can access it. If so, it has a serious design flaw as you cannot edit it from Realm Studio while some application is using it.

Please help answer the question above and I'll appreciate it. And let me know if the thread-safe version will fix it if it's the current limitation.

Thanks.

[fealebenpae]

Synchronized realm files can only be opened by one process at a time, that's why you can't open a synchronized realm with another application or with Realm Studio. That's only possible for realms opened using a RealmConfiguration, not FullSyncConfiguration or QueryBasedSyncConfiguration. If you can share a repro project or at least code samples of a RealmConfiguration realm not being able to be shared by two processes I'll try and help you out.

[chrisk414]

Thanks, it's good to know that local Realm(ReamConfiguration) is "process" safe.
I'll do some more testings and let you know what I find.
Cheers!

[Avatarchik]

Hi!Did anyone get to use this database?

[ianpward]

Good news everyone! We have released Beta build support for Unity for our .NET SDK - take a look at an example blogpost here - https://developer.mongodb.com/how-to/getting-started-realm-sdk-unity/

We still have a bunch of things to do over the next quarter while we get our Unity SDK to GA but feel free to take it for a spin and let us know what you think! Additionally, if you are building a game and have local storage requirements we'd love to talk to you; our roadmap is still getting defined and we want to serve the gaming community with the best local database out there. If you are interested in speaking with us please drop me a line at ian.[email protected] for a quick chat

[sandolkakos]

Good news everyone! We have released Beta build support for Unity for our .NET SDK - take a look at an example blogpost here - https://developer.mongodb.com/how-to/getting-started-realm-sdk-unity/

We still have a bunch of things to do over the next quarter while we get our Unity SDK to GA but feel free to take it for a spin and let us know what you think! Additionally, if you are building a game and have local storage requirements we'd love to talk to you; our roadmap is still getting defined and we want to serve the gaming community with the best local database out there. If you are interested in speaking with us please drop me a line at ian.[email protected] for a quick chat

That is a very nice announcement. I was waiting for it for almost 5 years, and I'm gonna definitely give it a check over the next weekend.

[nirinchev]

For those willing to take it for a spin, be sure to get the package from the latest beta release as that addresses a whole lot of rough edges.