my game center account are linked both on my ipad and iphone but the activity on the game center didnt update when i play games on my ipad. It only linked to games on my phone. So all the games i‘ve downloaded on my ipad arent linked to the game center. Is there any solution so that the games i‘ve downloaded on my ipad could link to the game center? i have tried to turn on and off both on my ipad and iphone but it still only linked to the phone.

I was trying update gptk, so i removed the old one ( installed by Xcode 15.0 ) and reinstalled it, but accuired a issue: Error: apple/apple/game-porting-toolkit 1.1 did not build Logs: /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/00.options.out /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/01.configure /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/01.configure.cc /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/02.make /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/wine64-build If reporting this issue please do so to (not Homebrew/brew or Homebrew/homebrew-core): apple/apple Error: Your Xcode (15.0) is outdated. Please update to Xcode 15.4 (or delete it). Xcode can be updated from the App Store. So I upgrade the Xcode to 15.4 by app store and still encountered: Error: apple/apple/game-porting-toolkit 1.1 did not build Logs: /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/00.options.out /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/01.configure /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/01.configure.cc /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/02.make /Users/CASEM/Library/Logs/Homebrew/game-porting-toolkit/wine64-build If reporting this issue please do so to (not Homebrew/brew or Homebrew/homebrew-core): apple/apple I've been reading some post says use 15.1, but still get same error report. What should I do next? Any help woulbe appreciated.

It show the following : ==> Upgrading apple/apple/game-porting-toolkit 1.0.3 -> 1.1 ==> Staging /Users/mtahin07/Library/Caches/Homebrew/downloads/7baed2a6fd34b4a641 ==> Patching ==> /private/tmp/game-porting-toolkit-20240619-16666-si8pyg/wine/configure --pre ==> make Last 15 lines from /Users/mtahin07/Library/Logs/Homebrew/game-porting-toolkit/02.make: /private/tmp/game-porting-toolkit-20240619-16666-si8pyg/wine/dlls/crypt32/unixlib.c:641:23: error: use of undeclared identifier 'noErr' if (status == noErr) ^ /private/tmp/game-porting-toolkit-20240619-16666-si8pyg/wine/dlls/crypt32/unixlib.c:647:31: warning: this function declaration is not a prototype [-Wstrict-prototypes] if ((status = SecItemExport(cert, kSecFormatX509Cert, 0, NULL, &certData)) == noErr) ^ /private/tmp/game-porting-toolkit-20240619-16666-si8pyg/wine/dlls/crypt32/unixlib.c:647:51: error: use of undeclared identifier 'kSecFormatX509Cert' if ((status = SecItemExport(cert, kSecFormatX509Cert, 0, NULL, &certData)) == noErr) ^ /private/tmp/game-porting-toolkit-20240619-16666-si8pyg/wine/dlls/crypt32/unixlib.c:647:95: error: use of undeclared identifier 'noErr' if ((status = SecItemExport(cert, kSecFormatX509Cert, 0, NULL, &certData)) == noErr) ^ 2 warnings and 7 errors generated. make: *** [dlls/crypt32/unixlib.o] Error 1 make: *** Waiting for unfinished jobs.... If reporting this issue please do so to (not Homebrew/brew or Homebrew/homebrew-core): apple/apple I can't verify what error occur

Hey, i have created a game in unity with the apple core and apple gamekit plugins present. I setup 5 leaderboards on the app store connect. I made a unity build and did the whole testflight build loop to test everything. When i open my gamecenter panel via the button i see my leaderboards but they show as MISSING TITLE which is weird because i have for sure set them up correctly they have a leaderboard reference name and leaderboard id as well. When debugging i can see that when i call my submit score function it gets submitted with no error but then i also dont see the score appear anywhere . Keep in mind the leaderboards are not live and are being tested on testflight first

I have a VisionOS app that uses a Game Center Leaderboard. On 'appear' of my content view, I check authentication, and if the user is auth'd, I display a 'leaderboard' button. This works on development / TestFlight – the little floating 'Game Center logged-in' pop up shows up when the app runs, and the button appears. Tapping the button opens the leaderboard, and I can tap over to 'global' and see everyone's scores. However, the app launched today on the App Store, and I'm having some issues. The leaderboard button isn't showing up, meaning that the auth call is probably failing silently. Not sure why. If I log out of Game Center on the device, and re-open the app, I'm able to auth and see my leaderboard button. Once I've done that, the leaderboard seems busted. On App Store Connect I can see the values that I expect (high scores from my beta test flight). But, on the production app, the leaderboard is just empty. And there's no 'global' tab to tap on. Wondering if this is a propagation issue? Like, does it take time to roll out the Game Center entitlements when the app is live? I'm going to distribute promo codes to try and get some more people with the App Store version testing for me to see what happens for them. Any help appreciated!

I'm using the Apple Unity Plugins to use Game Center to authenticate Playfab accounts for my game and when I test this on testflight, everything works fine for me and the people I've tested with, however, when I send the build to review, they are getting GameKitException 37 which states "This game is not listed in a marketplace that supports Game Center" and upon further research I found this page https://developer.apple.com/documentation/gamekit/gkerror/code/appunlisted which I'm assuming is the same thing. This seems to suggest that I need my app to be listed on the App Store which is strange because this has created a what comes first, the chicken or the egg problem. I need to pass review to get the game listed in the App Store and they can't test the game because accounts cannot be authenticated with Game Center which apparently needs to be listed on the App Store. So far, I can't find the reason why this doesn't happen on testflight and only happens when I send it to review. I opened a ticket to Apple Developer Support and haven't recieved a response. I asked app review about it and they replied "Hello, Thank you for your response. Since all apps must pass App Review before they can be approved, it should not be necessary to have a "store page". We look forward to reviewing your app once all issues have been addressed and the new build has been received and queued for review. Best regards, App Review" Which doesn't really help me. I am quite pressed for time and I really need assistance in resolving this issue which I cannot replicate. Has anyone encountered this issue or know how to solve it?

Hello, First of all, I understand that GKVoiceChat has been deprecated and replaced by shareplay but for my situation, it does not seem useful as I will be matching with the random players hence I can not utilise the Facetime(Shareplay) capability. I have set up a voice chat function using the GKVoiceChat object, my game connects with another player successfully but the voice chat does not work for some reason. The code snippet below is how I implemented it with the help of the tutorial from : apple (Start Voice chat between players) class OnlineGame { var voiceChat: GKVoiceChat? = nil ... // When online game succesfully connected and game view loaded self.startVoiceChat() func startVoiceChat() { // Handle an unknown, connected, or disconnected player state. /// - Tag:voiceChatChangeHandler /// if voiceChat == nil { // Create the voice chat object. voiceChat = myMatch?.voiceChat(withName: "Gamesession") } let voiceChatChangeHandler = { (player: GKPlayer, state: GKVoiceChat.PlayerState) -> Void in switch state { case GKVoiceChat.PlayerState.connected: self.voicechatstate = 1 case GKVoiceChat.PlayerState.disconnected: self.voicechatstate = 2 case GKVoiceChat.PlayerState.speaking: self.voicechatstate = 3 case GKVoiceChat.PlayerState.silent: self.voicechatstate = 4 case GKVoiceChat.PlayerState.connecting: self.voicechatstate = 5 @unknown default: print("Player unknown state.") } } // Exit early if the app can't start a voice chat session. guard let voiceChat = voiceChat else { return } // Handle an unknown, connected, or disconnected player state. voiceChat.playerVoiceChatStateDidChangeHandler = voiceChatChangeHandler // Set the audio volume. // Activate the shared audio session. do { let audioSession = AVAudioSession.sharedInstance() try audioSession.setCategory(AVAudioSession.Category.playAndRecord, mode: AVAudioSession.Mode.gameChat, options: AVAudioSession.CategoryOptions.allowBluetooth) try audioSession.setActive(true, options: []) } catch { print("ERROR: \(error.localizedDescription).") } voiceChat.volume = 0.8 voiceChat.start() voiceChat.isActive = true } } Thats my implementation of it and hope it explains my issue. Thanks for your assistance in advance!.

Dear Apple Developer Support, I have a question regarding the Background Assets feature for a game we are planning to release on the App Store. Specifically, I would like to understand the user experience during the initial installation process. If our game utilizes the Background Assets feature and we have essential assets specified in the BAExtension, will the end user need to wait for these essential assets to be fully downloaded before they can open the game after installing it from the App Store? Additionally, during this download process, will there be any indication of the essential assets' download status on the App Store or on the home screen icon of the game? Your guidance on how this process is managed and what the user can expect would be greatly appreciated. Thank you for your assistance.

https://vimeo.com/957974306 Canvas #1(Unity) stopped rendering context when I switch tab on inspector. Also my device 13 pro max running iOS 17.5.1 lost context when I screenshot. It has no log in console. Not happened on 13 pro max running iOS 16.4

At WWDC 2023, the background asset feature was introduced, allowing essential resources to be downloaded before the game is first launched. How does this differ from including all necessary resources directly in the installation package? What are the advantages of this approach, and how does it enhance the user experience?

Hello, Asking the following as, I was unable to find answers via search on the forum and in the documentation: Invitations sent via iMessage seem to work correctly with my custom image ( GKMessageImage.png ) however, notifications sent to Game Center Friends via invites generated in Game Center do not include the custom image ( GKMessageImage.png ). Questions: Is this expected behavior? Is there a different way to customize the image in the notification? Note the Game Center notification includes the App name correctly. I also noted in the WWDC session in 2016 ( saw video recently ) that there was some mention of no longer adding friends via Game Center. Is that currently true? Thanks in advance.

In the last several days I've gotten reports from customers saying that Game Center suddenly cannot connect to players. I was able to verify this myself. It will find players to match, but then during the Connecting process it just sits there indefinitely with a spinning thing. Up until maybe 4 days ago this had worked fine for the last 12+ years, so something on the Game Center server broke. Is anyone else experiencing the same problem?

This may be a bit dumb but I've really been having trouble with understanding the documentation for Apple's Unity Plugins. I wanted to implement Game Center functionality on my game. So far the only line of code I've managed to get working is the authentication, in which I did async void Start() { await Login(); } public async Task Login() { if (!GKLocalPlayer.Local.IsAuthenticated) { var player = await GKLocalPlayer.Authenticate(); var localPlayer = GKLocalPlayer.Local; ] } However, I'm at a complete loss as to how to open leaderboards. I followed the documentation given: void OpenLeaderboard() { var allLeaderboards = await GKLeaderboard.LoadLeaderboards(); var filteredLeaderboards = await GKLeaderboard.LoadLeaderboards("leaderboardIwant1"); } But it did not work. What did I do wrong? Am I missing a function to get it to work? Why can't Apple write proper documentation to properly implement this in a simple way? My apologies for my frustration. Up until now I've used another plugin from the Unity Asset Store which is shockingly easy to use, but I decided to attempt to use Apple's system because the plugin I had used deprecated functions and I was afraid the App Store would not approve it. But Apple's own plugins are stunningly opaque and hard to test. As additional questions (but not the main ones), I'm also completely at a loss how to submit scores or load specific leaderboards and Apple's documentation does nothing to help there either. Any help or thoughts are appreciated. Thanks.

Hello, has anyone been able to implement in their game a way to display the number of players currently online in their game?. I thought up of this feature and thought it will be useful for players to find out if there is anyone currently online so that they don't waste their time trying to find a random online match. Any help will be greatly appreciated. Kind regards, Jabir Abdi

I have an AR game using ARKit with SceneKit that works just fine in iOS 17. In the iOS 18 betas, the AR background image shows black instead of showing the real world. As a result there's no tracking and obviously the whole game is useless. I narrowed down the issue to showing the Game Center Access Point. My app has ViewController 1 (VC1) showing the main menu and that's where I want to show the GC Access Point. From there you open VC2 which shows a list of levels. Selecting any level will open VC3 which has the ARScene. Following is the code I use to start Game Center in VC1: GKLocalPlayer.local.authenticateHandler = { gcAuthVC, error in let isGameCenterReady = (gcAuthVC == nil) && (error == nil) if let viewController = gcAuthVC { self.present (viewController, animated: true, completion: nil) } if error != nil { print(error?.localizedDescription ?? "") } if isGameCenterReady { GKAccessPoint.shared.location = .topLeading GKAccessPoint.shared.showHighlights = true GKAccessPoint.shared.isActive = true } } When switching to VC2 I run GKAccessPoint.shared.isActive = false so that the Access Point will no longer show in any of the following VCs. I tried running it in VC1, VC2, and again in VC3 - it doesn't change anything. Once I reach VC3, the background is black. If in VC1 I don't run GKAccessPoint.shared.isActive = true, so I don't activate the access point, the behavior is as follows: If I wait until after the Game Center login animation completes and closes on its own and then I proceed to VC2 and VC3, the camera image will show correctly If I quickly move to VC2 before the Game Center login animation has completed, so my code will close it by setting active = false, and then I continue to VC3, I will see the black background problem. So it does look like activating the access point and then de-activating it causes the issue. BTW, if I activate the access point and leave it on in all VCs, the same black background issue persists. Other than that, when I'm in VC3 with the black background and I switch to another app (so my game moves to the background), when it returns to the foreground, the camera suddenly shows the real world correctly! I tried to manually reset the AR session by pausing and restarting it, but that didn't change anything. Also, when I check with the debugger, it looks like when the app comes back to the foreground it also doesn't run the session start code. But something does seem to reset itself so I wonder what that is. Maybe I could trigger the same manually in my cdoe??? I repeat that everything works just fine in iOS 17 and below. This problem only started with the iOS 18 beta (currently on beta 5, but it started in some of the previous betas as well). So could this be a bug in iOS 18? As a workaround I could check the iOS version and if it's iOS18 not activate the access point, hoping that the user will not jump to VC2 too quickly, and show my own button which will open Game Center. But I'd rather give the users the full experience with their own avatar and the highlights showing up. Plus, certainly some users will move quickly to VC2 and that will be an awful experience. Any help would be greatly appreciated. Thanks!

Why is the GameController framework loaded I am checking the launch time of our app, using Instruments->App launch I was confused to find the GameConroller framework loaded I check the project, in the plist file, no configuration GCSupportedGameControllers, GCSupportsControllerUserInteraction related key. What else causes the GameController framework to load?

Hello, I try to invite a friend to play my app , however when the friend try to press invite link component via iMessage, it shows “Retrieving” and then disappear, nothing happens, it doesn't redirect to my app, what I'm missing? or doing wrong I can leave some part of my code import Foundation import GameKit extension RealTimeGame: GKLocalPlayerListener { /// Handles when the local player sends requests to start a match with other players. func player(_ player: GKPlayer, didRequestMatchWithRecipients recipientPlayers: [GKPlayer]) { print("\n\nSending invites to other players.") } /// Presents the matchmaker interface when the local player accepts an invitation from another player. func player(_ player: GKPlayer, didAccept invite: GKInvite) { // Present the matchmaker view controller in the invitation state. if let viewController = GKMatchmakerViewController(invite: invite) { viewController.matchmakerDelegate = self rootViewController?.present(viewController, animated: true) { } } } } also I don't have "<key>CFBundleURLTypes</key>" in my info.plist, I don't know I need that or not...

Hello, I would like to know if anyone has or still using the GKVoiceChat capabilities in their apps. I wanted to use it for my online game but I am coming across issues using it and wondering if their are alternatives?. The documentation mentions to use Share-play but that wont be possible with random online players. Any help will be appreciated!.

Hi, I created a leaderboard in my application, and a method to record a new score: GKLeaderboard.loadLeaderboards(IDs: [leaderboardID]) { (leaderboards, error) in if let error = error { print("Error loading leaderboards: \(error.localizedDescription)") } guard let leaderboard = leaderboards?.first else { print("Leaderboard not found") return } leaderboard.submitScore(score, context: 0, player: self.localPlayer) { error in if let error = error { print("Error reporting score: \(error.localizedDescription)") } else { print("Score reported successfully!") } } } } When debuging, this method is correctly called and I have a success, so I tried to test it with an internal TestFlight release. The leaderboard is never updated. Is there a way to perform a test of a leaderboard before publishing the app? I have the same question for achievements: let achievement = GKAchievement(identifier: identifier) achievement.percentComplete = percentComplete GKAchievement.report([achievement]) { error in if let error = error { print("Error reporting achievement: \(error.localizedDescription)") } } } Thanks!

I have created a turn based game using GameKit. Everything is pretty much done, last thing left to do is the turn time out. I am passing GKTurnTimeoutDefault into the timeout argument in: func endTurn(withNextParticipants nextParticipants: [GKTurnBasedParticipant], turnTimeout timeout: TimeInterval, match matchData: Data) However when I check the .timeoutDate property of the GKTurnBasedParticipant participants, the value is always nil. What am I doing wrong? Am I checking the right property or is there another one instead that I don't know about? I have tried passing different values to the timeout parameter but the timeoutDate is always nil. Has anyone successfully implemented a timeout using GKTurnBasedMatch ?