I am using Unity's GameKit to implement a turnbase game. I want to make a UI in Unity to show all the games I can join. I tried using var matches = await GKTurnBasedMatch.LoadMatches(); to get all the open matches. But it seems that I can only get the matcm related to the current apple account. Can you help me get all the matches? ALSO I used var match = await GKTurnBasedMatchmakerViewController.Request(request); to exit the gamecenter interface and start a game (automatic matching, no one was invited) Another device used var match = await GKTurnBasedMatch.Find(request); to find the game, but it did not find the game, but it start a new game (automatic matching). Can you help me solve these problems?

I have a Unity application in which I'm implementing a GameCenter login with PlayFab. I fetch the items and use them in the PlayFab request, which returns me the error 'Authentication failed. Signature does not match the authentication request data'. I've reproduced the request using Insomnia with the same results. I have this exact same flow implemented in another application, which works normally. I'm positive that the PlayFab verification is correct, and there's indeed an issue with the data being sent, but I can't find any information about this kind of situation anywhere, and I don't know how to either reproduce the verification myself, or how to inspect the data to check for issues. I have reviewed my app's data on AppstoreConnect and have filled every form, document, and even its store page. I've also checked it's bundle identifier settings to make sure it had all the permissions necessary, which seems to be only GameCenter. I fetch the authentication items through this code try { Debug.Log("Fetching authentication items"); var fetchItemsResponse = await GKLocalPlayer.Local.FetchItems(); PlayFabGameCenterLogin(fetchItemsResponse); } catch (Exception ex) { Debug.Log("Error fetching authentication items: " + ex.Message); OnLoginFailure(); } Which is then sent to this method to start the login request static void PlayFabGameCenterLogin(GKIdentityVerificationResponse authenticationItems) { var request = new LoginWithGameCenterRequest(); request.CreateAccount = true; request.PlayerId = GKLocalPlayer.Local.GamePlayerId; request.InfoRequestParameters = new GetPlayerCombinedInfoRequestParams { GetUserAccountInfo = true }; if (authenticationItems != null) { request.PublicKeyUrl = authenticationItems.PublicKeyUrl; request.Salt = Convert.ToBase64String(authenticationItems.GetSalt()); request.Signature = Convert.ToBase64String(authenticationItems.GetSignature()); request.Timestamp = authenticationItems.Timestamp.ToString(); } else Debug.Log("Playfab Login with no authentication items"); // Login PlayFabClientAPI.LoginWithGameCenter(request, OnLoginSuccess, (e) => { I'm on Unity 2022.3.10f1 Apple.Core 3.1.3 Apple.GameKit 2.2.2 Xcode 16.2 I need information on what could be the cause of this, if it's a SDK issue, a lack of filling information somewhere, if it's some data compatibility issue (maybe data on the app that's not the same on the appstoreconnect or developer?), or if it's possible to verify the authentication data manually to investigate.

I'm building a game with a client-server architecture. Using GKMatch.chooseBestHostingPlayer(_:) rarely works. When I started testing it today, it worked once at the very beginning, and since then it always succeeds on one client and returns nil on the other client. I'm testing with a Mac and an iPhone. Sometimes it fails on the Mac, sometimes on the iPhone. On the device that it succeeds on, the provided host can be the device itself or the other one. I created FB9583628 in August 2021, but after the Feedback Assistant team replied that they are not able to reproduce it, the feedback never went forward. import SceneKit import GameKit #if os(macOS) typealias ViewController = NSViewController #else typealias ViewController = UIViewController #endif class GameViewController: ViewController, GKMatchmakerViewControllerDelegate, GKMatchDelegate { var match: GKMatch? var matchStarted = false override func viewDidLoad() { super.viewDidLoad() GKLocalPlayer.local.authenticateHandler = authenticate } private func authenticate(_ viewController: ViewController?, _ error: Error?) { #if os(macOS) if let viewController = viewController { presentAsSheet(viewController) } else if let error = error { print(error) } else { print("authenticated as \(GKLocalPlayer.local.gamePlayerID)") let viewController = GKMatchmakerViewController(matchRequest: defaultMatchRequest())! viewController.matchmakerDelegate = self GKDialogController.shared().present(viewController) } #else if let viewController = viewController { present(viewController, animated: true) } else if let error = error { print(error) } else { print("authenticated as \(GKLocalPlayer.local.gamePlayerID)") let viewController = GKMatchmakerViewController(matchRequest: defaultMatchRequest())! viewController.matchmakerDelegate = self present(viewController, animated: true) } #endif } private func defaultMatchRequest() -> GKMatchRequest { let request = GKMatchRequest() request.minPlayers = 2 request.maxPlayers = 2 request.defaultNumberOfPlayers = 2 request.inviteMessage = "Ciao!" return request } func matchmakerViewControllerWasCancelled(_ viewController: GKMatchmakerViewController) { print("cancelled") } func matchmakerViewController(_ viewController: GKMatchmakerViewController, didFailWithError error: Error) { print(error) } func matchmakerViewController(_ viewController: GKMatchmakerViewController, didFind match: GKMatch) { self.match = match match.delegate = self startMatch() } func match(_ match: GKMatch, player: GKPlayer, didChange state: GKPlayerConnectionState) { print("\(player.gamePlayerID) changed state to \(String(describing: state))") startMatch() } func startMatch() { let match = match! if matchStarted || match.expectedPlayerCount > 0 { return } print("starting match with local player \(GKLocalPlayer.local.gamePlayerID) and remote players \(match.players.map({ $0.gamePlayerID }))") match.chooseBestHostingPlayer { host in print("host is \(String(describing: host?.gamePlayerID))") } } }

We are trying to implement saving and fetching data to and from iCloud, but it have some problems. MacOS: 15.3 Here is what I do: Enable Game Center and iCloud capbility in Signing & Capabilities, pick iCloud Documents, create and select a Container. Sample code: void SaveDataToCloud( const void* buffer, unsigned int datasize, const char* name ) { if(!GKLocalPlayer.localPlayer.authenticated) return; NSData* data = [ NSData dataWithBytes:databuffer length:datasize]; NSString* filename = [ NSString stringWithUTF8String:name ]; [[GKLocalPlayer localPlayer] saveGameData:data withName:filename completionHandler:^(GKSavedGame * _Nullable savedGame, NSError * _Nullable){ if (error != nil) { NSLog( @"SaveDataToCloud error:%@", [ error localizedDescription ] ); } }]; } void FetchCloudSavedGameData() { if ( !GKLocalPlayer.localPlayer.authenticated ) return; [ [ GKLocalPlayer localPlayer ] fetchSavedGamesWithCompletionHandler:^(NSArray<GKSavedGame *> * _Nullable savedGames, NSError * _Nullable error) { if ( error == nil ) { for ( GKSavedGame *item in savedGames ) { [ item loadDataWithCompletionHandler:^(NSData * _Nullable data, NSError * _Nullable error) { if ( error == nil ) { //handle data } else { NSLog( @"FetchCloudSavedGameData failed to load iCloud file: %@, error:%@", item.name, [ error localizedDescription ] ); } } ]; } } else { NSLog( @"FetchCloudSavedGameData error:%@", [ error localizedDescription ] ); } } ]; } Both saveGameData and fetchSavedGamesWithCompletionHandler are not reporting any error, when debugging, saveGameData completionHandler got a nil error, and can get a valid "savedGame", but when try to rebot the game and use "fetchSavedGamesWithCompletionHandler" to fetch data, we got nothing, no error reported, and the savedGames got a 0 length. From this page https://developer.apple.com/forums/thread/718541?answerId=825596022#825596022 we try to wait 30sec after authenticated , then try fetchSavedGamesWithCompletionHandler, still got the same error. Checked: Game Center and iCloud are enabled and login with the same account. iCloud have enough space to save. So what's wrong with it.

I am currently working on a game that involves earning achievements, which I am using the Apple Unity Plug-Ins to display. I have found that occasionally opening the Game Center Dashboard the last achievement earned will not be displayed until the game is closed and reopened. I am using GKAccessPoint.Shared.Trigger to display the Achievements screen, which occasionally seems to open a cached version of the dashboard. I've found that it seems to consistently happen when earning multiple achievements within one minute, but this is not always the case. Does anybody have any experience with something like this in the past?

Hi, I am a new developer. I want to add articulated objects and deformable objects into my AR game. I haven't found any tutorial on this, I hope to interact with these objects. Please let me know if this is available in visionOS.

Hi all im having a variety of issues with gamekit matchmaking. On the simulator the matchmaking ui pops up and I can click Quick Match, then immediately "Failed to find Players" this is the same with a real Apple ID and a sandbox account. If I use real devices the app at least discovers a match, but then the match none of the delegate methods for the match ever get called and the logs are filled with socket not connected and various errors. My questions are: Should match making via quick match work in the simulator, I have seen tutorial videos etc of this working, but I can't seem to get it to work. How do people debug issues with GameCenter / Gamekit to find out why its not able to connect? Many thanks in advance

Hello, I setup a leaderboard in the default language English and everything works and the app is live in the store. Now I am adding localization to the leaderboard and noticed than some languages have the data entry "Score Format Suffix" and some languages the data entries "Score Format Suffix (Singular)" and "Score Format Suffix (Plural)" instead. Is this an error or intentional? Kind Regards, Chris

I have an idea for a game where the Apple TV app acts as the host and discovers nearby iOS apps that can join the game. Each iOS app needs to be able to have the user draw, tap, etc and have all the events be delivered in real time to the Apple TV where the effects will be rendered immediately (imagine a co-op game played in your lounge room where guests user their own devices to control aspects of the UI on the shared Apple TV screen) MPC is discontinued and DeviceDiscoveryUI is limited to only a single iOS device so I’m trying to figure out the best way to do the P2P networking. Reading/watching videos suggests that using GKMatchMaker and friends seems like it might suffer from latency problems (because everything has to go via Game Centre - or does it?) plus I’m not sure how I’d deal with the fact that the owner of the Apple TV is likely to signed into the same game centre id on both the Apple TV and their own devices to which would mean they wouldnt be able to play because the host can’t invite “themselves” on another device (or can it?) Soooo… I’m looking for suggestions on how best to move forward. I’ve read https://developer.apple.com/documentation/technotes/tn3151-choosing-the-right-networking-api which is very useful but there’s no clear suggestion that would work. Using the Network for the real time messaging seems doable but dealing with discovery / invites seems like a massive pain that I’d prefer to use built-in libraries if possible. Any suggestions would be gladly received. Thanks a lot

Hello, I’m the developer of the “ StepSquad” app. Our app uses the Game Center achievement feature, but we’ve been encountering a problem: the “Global Players” metric always shows 0%, even though there are friends who have already achieved these achievements. Initially, I thought it might be because the app was newly launched. However, it’s now been over two months since release, and it’s still showing 0%. If anyone has any insight into this issue, please leave a comment.

Hello, I’m the developer of the “stepsquad” app. Our app uses the Game Center achievement feature, but we’ve been encountering a problem: the “Global Players” always shows 0%, even though there are friends who have already achieved these achievements. Initially, I thought it might be because the app was newly launched. However, it’s now been over two months since release, and it’s still showing 0%. If anyone has any insight into this issue, please leave a comment.

I facing to many lags in pubgmobile when i m playing its not running properly

I am developing a turn based game using GameKit. The happy path (pretty much as always) is fine; invite, accept, play, have winners/losers and match ends. Yay! But I am working on making sure I handle situations where invited friends decline to participate. I've been through the docs, and don't see how the GKTurnBasedMatch is updated to reflect the tap of the decline button in the Game Center Invite notification. When I reload the match from Game Center on the host device the status for the invitee who declined is still .invited. I also tested by setting all players that are not the host in the nextParticipants of the endTurn(...) to start the invites and the next invitee was not given a push notification to accept or decline the invite. I feel like there should be a way to determine when an invitee has declined an invite (via participant in the match.participants via status OR a delegation method somewhere that is called when the Decline or Accept buttons on that notification are tapped.) I'm missing something, please help me find it! Thank you!

i was update my iPhone 15 pro max on IOS 18.2 beta versio. I am fasing the issu. When i am playing Pubg Game, the notification always Come down and game stop. And when i try to On “Guided Access” the Guided access also not workin. Plzzz fix it. And i have another issue with iPhone when i open any app or any documents its very difficult to Go Back. i have to use left hand to go back or always Use Both hands. If it’s possible the “Go Back” option is available on both left and right side. right hander also easily use iPhone on One hand. give us a option “Go Back” option on Right also. Its very easy for us. Thank u soo much🩷🩷

Hi, I’m creating a game and I’m just wondering if I can integrate GCVirtualController in my SwiftUI app.

In my SceneKit game I'm able to connect two players with GKMatchmakerViewController. Now I want to support the scenario where one of them disconnects and wants to reconnect. I tried to do this with this code: nonisolated public func match(_ match: GKMatch, player: GKPlayer, didChange state: GKPlayerConnectionState) { Task { @MainActor in switch state { case .connected: break case .disconnected, .unknown: let matchRequest = GKMatchRequest() matchRequest.recipients = [player] do { try await GKMatchmaker.shared().addPlayers(to: match, matchRequest: matchRequest) } catch { } @unknown default: break } } } nonisolated public func player(_ player: GKPlayer, didAccept invite: GKInvite) { guard let viewController = GKMatchmakerViewController(invite: invite) else { return } viewController.matchmakerDelegate = self present(viewController) } But after presenting the view controller with GKMatchmakerViewController(invite:), nothing else happens. I would expect matchmakerViewController(_:didFind:) to be called, or how would I get an instance of GKMatch? Here is the code I use to reproduce the issue, and below the reproduction steps. Code Run the attached project on an iPad and a Mac simultaneously. On both devices, tap the ship to connect to GameCenter. Create an automatched match by tapping the rightmost icon on both devices. When the two devices are matched, on iPad close the dialog and tap on the ship to disconnect from GameCenter. Wait some time until the Mac detects the disconnect and automatically sends an invitation to join again. When the notification arrives on the iPad, tap it, then tap the ship to connect to GameCenter again. The iPad receives the call player(_:didAccept:), but nothing else, so there’s no way to get a GKMatch instance again.

Hi, I tried to save the game progress using the official Apple plugin for Unity but the crash happened when I active the "iCloud Documents" inside capabilities and when deactivated it this error message appeared: Code=27 Domain=GKErrorDomain Description=The requested operation could not be completed because you are not signed in to iCloud or have not enabled iCloud Drive. (UbiquityContainerUnavailable) Authentication with Game Center works fine using the Core plugin, but nothing works correctly when I use the GameKit plugin. Note: I already active iCloud for app Identifier. Tichnecal informations: Unity version: 2022.3.47f1 LTS XCode 16 Swift 6 GameKit-3.0.0 (Apply unity plugin) Core-3.1.5 (Apply unity plugin)

I'm displaying a GKGameCenterViewController after successfully authenticating and on iOS 18.0 and 18.1, I get a black screen. As a sanity check GKLocalPlayer.local.isAuthenticated is also returning true. The same code works just fine on iOS 17. Is there something that needs to be done on iOS 18 and above?

Once GKAccessPoint is active, then enter an arview page, the arview will lose camera feed. OSVersion: iOS 18.0.1, iOS 18.1

The welcome banner is off the top left side of the screen instead of coming down the center. This behavior is encountered when running my iOS application on macOS.