Android Question Google Play Game Services library - issues with TurnBasedMultipPlayer [solved with workaround]

Greg Breinholt · Dec 1, 2020

I've been (successfully) using this Library to use the Google Play leaderboard:

Google Play Game Services

This is a wrapper for the Google Play Services related to games. This library was tested successfully with the API 37 of Google Play Services. List of features: Sign-in: supported; Achievements: supported; Leaderboards: supported; Real-time multiplayer: supported (NEW!); Turn-based...

www.b4x.com

All worked fine, but suddenly getting the error below. Note that I am not actually using TurnbasedMultiplayer in my code.. but from what I can see, Google has killed this API:

Turn-based Multiplayer | Play Games Services | Google for Developers

developers.google.com

Anyone have any ideas how to resolve this? Does it need an update to the Library removing all links to the removed API?

Greg

Edit: Workaround found Removing/replacing the asynchronous calls stops the crash. See the later comments.

Recommended to use this library:

[New] Google Play Games Services

Hi everyone, This is a complete wrapper of the latest Google Play Games Services (v17.2.1). I made this for @Jack Cole and he allowed me to post it on the forum to help other users. Though the functionalities are almost the same but the implementation is a little different than the old wrapper...

www.b4x.com

andymc · Dec 1, 2020

It's not just me then! I'm getting this too.

Greg Breinholt · Dec 2, 2020

Tagging @Informatix . Not sure if you're still supporting this Library... have you seen this issue?

eps · Dec 2, 2020

Ah, they got rid of it... https://support.google.com/googleplay/android-developer/answer/9469745 March 2020.

andymc · Dec 2, 2020

So the B4A library needs updating to remove that part of the library? Can anyone besides Informatix do that? I don't know how to.

DonManfred · Dec 2, 2020

andymc said:
So the B4A library needs updating to remove that part of the library? Can anyone besides Informatix do that? I don't know how to.

The Api behind used in the Lib is discontinued.

One need to write a new wrapper for the mentioned new Api.
Note that this Api is maybe/probably not a Free Api.

Open Match: Flexible and extensible matchmaking for games | Google Cloud Blog

Google Cloud and Unity are jointly announcing the availability of Open Match, an open source matchmaking solution offering game creators a common matchmaker framework.

cloud.google.com

eps · Dec 2, 2020

I'll see what I can do, but if anyone else fancies updating it please feel free.

Computersmith64 · Dec 3, 2020

I'm not sure why you're getting this error. I have a few games that use(d) Google Play Real-Time Multiplayer & I'm not seeing any errors since Google stopped supporting multiplayer. I still have all the code in the apps, but I'm just not calling any of it. Are you sure there's nothing in your code that's referencing turn-based multiplayer? I see in your log, the error is coming from Connection_Success. If you used Informatix's example code, you might have some sneaky references in there.

- Colin.

Greg Breinholt · Dec 3, 2020

Thanks - I started watching some of Manfred's library wrapping tutorials, but it might be above my pay grade ;-)

I'm lucky that I only use the Leaderboard features, so hopefully removing the dead APIs would fix my issue (shame for those that will have to try and implement a replacement functionality for the removed Google API's with a new Library).

Greg Breinholt · Dec 3, 2020

Computersmith64 said:
I'm not sure why you're getting this error. I have a few games that use(d) Google Play Real-Time Multiplayer & I'm not seeing any errors since Google stopped supporting multiplayer. I still have all the code in the apps, but I'm just not calling any of it. Are you sure there's nothing in your code that's referencing turn-based multiplayer? I see in your log, the error is coming from Connection_Success. If you used Informatix's example code, you might have some sneaky references in there.

- Colin.

Let me check again - I haven't changed any of the Leaderboard code for months (and I don't use any multi-player features, unless a sneaky reference snuck in!) It just stopped running with the error above - though up until that point, I also never had any errors for that Library. Andmc also seems to have the same issue, which may or may not be related.

Greg Breinholt · Dec 3, 2020

Greg Breinholt said:
Let me check again - I haven't changed any of the Leaderboard code for months (and I don't use any multi-player features, unless a sneaky reference snuck in!) It just stopped compiling with the error above - though up until that point, I also never had any errors for that Library. Andmc also seems to have the same issue, which may or may not be related.

I don't see any refs to Multiplayer. And yes, I used Informatix Leaderboard example project as the base.
It still creates the connection successfully and signs in, just fails afterwards.

eps · Dec 3, 2020

Sorry I've got a work issue at the moment which is taking all my time at the moment.

I did try to update the Informatix Wrapper but then Android Studio needed updating and my VM required more diskspace etc...

I'll see what I can do in the 'background' but work is a priority

Greg Breinholt · Dec 3, 2020

Greg Breinholt said:
Let me check again - I haven't changed any of the Leaderboard code for months (and I don't use any multi-player features, unless a sneaky reference snuck in!) It just stopped running with the error above - though up until that point, I also never had any errors for that Library. Andmc also seems to have the same issue, which may or may not be related.

No problem! Any help appreciated, whenever ;-)
My published app using this is for my own learning and amusement... so for the short-term, I put out an update that shows this when the user tries to access the Leaderboard:

eps · Dec 3, 2020

Ah there's the simplelibrarycompiler... will give that a go https://www.b4x.com/android/forum/t...mpiler-build-libraries-without-eclipse.29918/

ETA : well.... it would seem that in the intervening period the API calls have changed quite a bit. I started chopping out items that were no longer included, but some of it is a bit more subtle than that.. i.e. PlayerLevel and PlayerLevelInfo API calls.

eps · Dec 4, 2020

I've finally managed to download the play services and auth services libs from Android Maven repository.

Just unpacking and repackaging...

Only the easy steps done before the next few...

Needed to install the JD PlugIn for Eclipse (which threw a dependency error - trying an online JD)

Greg Breinholt · Jan 11, 2021

eps said:
I've finally managed to download the play services and auth services libs from Android Maven repository.

Just unpacking and repackaging...

Only the easy steps done before the next few...

Needed to install the JD PlugIn for Eclipse (which threw a dependency error - trying an online JD)

Any progress? (no pressure! ;-)

Jack Cole · Jan 31, 2021

Any progress on updating this library? I would be willing to chip in some $ to help get this done.

andymc · Jan 31, 2021

Jack Cole said:
Any progress on updating this library? I would be willing to chip in some $ to help get this done.

Me too! I would be happy to pay for an updated Google paly services library for B4A. I make money from my games and this bug is putting me off developing them any further.

Computersmith64 · Feb 1, 2021

Looking back at what @Greg Breinholt posted - I suspect that the issue is caused when you're using a custom leaderboard & getting the data for it via the LoadLeaderboardMetadata function call. The reason is (I think) that this call invokes the PendingResultWrapper & the PendingResultWrapper source appears to make several references to classes that have been removed from the GPGS API. When the PendingResultWrapper raises the result event in B4A, it maps the result to the corresponding class - & it just so happens that the first mapping attempt is to the CancelMatchResult class, which is why you're seeing that error.

I think that if you used the standard GPGS leaderboards, you wouldn't see this issue. I've been using the standard GPGS leaderboards & achievements for years & haven't made any changes since they deprecated the multiplayer functions, but not seen any issues because of it.

At first glance of the source, it looks like if you removed all the mapping attempts to deprecated classes from the PendingResultWrapper, that would (possibly) resolve the issue - however doing so might also break other parts of the library. I can't say for sure because I haven't had time to look at it closely.

- Colin.

Greg Breinholt · Feb 1, 2021

Computersmith64 said:
Looking back at what @Greg Breinholt posted - I suspect that the issue is caused when you're using a custom leaderboard & getting the data for it via the LoadLeaderboardMetadata function call. The reason is (I think) that this call invokes the PendingResultWrapper & the PendingResultWrapper source appears to make several references to classes that have been removed from the GPGS API. When the PendingResultWrapper raises the result event in B4A, it maps the result to the corresponding class - & it just so happens that the first mapping attempt is to the CancelMatchResult class, which is why you're seeing that error.

I think that if you used the standard GPGS leaderboards, you wouldn't see this issue. I've been using the standard GPGS leaderboards & achievements for years & haven't made any changes since they deprecated the multiplayer functions, but not seen any issues because of it.

At first glance of the source, it looks like if you removed all the mapping attempts to deprecated classes from the PendingResultWrapper, that would (possibly) resolve the issue - however doing so might also break other parts of the library. I can't say for sure because I haven't had time to look at it closely.

- Colin.

That's correct I am using this code:

B4X:

    'Loads the list of leaderboards   
    Leaderboards.LoadLeaderboardMetadata(True).SetResultEvent("GP_onLeaderboardsLoaded")

I was not aware that I'm using custom Leaderboard - I created one in the Play Console (image below).
Is this classed as custom?

Do you know if there an alternative way to create the Leaderboard or get the data from it that would prevent the error?

Android Question Google Play Game Services library - issues with TurnBasedMultipPlayer [solved with workaround]

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