Hello! Bare with me here, as there is a lot to explain! I am working on implementing a Game Center high score leaderboard into my game. I have looked around for examples of how to properly implement this code, but have come up short on finding much material. Therefore, I have tried implementing it myself based off information I found on apples documentation. Long story short, I am getting success printed when I update my score, but no scores are actually being posted (or at-least no scores are showing up on the Game Center leaderboard when opened). Before I show the code, one thing I have questioned is the fact that this game is still in development. In AppStoreConnect, the status of the leaderboard is "Not Live". Does this affect scores being posted? Onto the code. I have created a GameCenter class which handles getting the leaderboards and posting scores to a specific leaderboard. I will post the code in whole, and will discuss below what is happening. PLEASE VIEW ATTACHED TEXT TO SEE THE GAMECENTER CLASS! GameCenter class - https://developer.apple.com/forums/content/attachment/0dd6dca8-8131-44c8-b928-77b3578bd970 In a different GameScene, once the game is over, I request to post a new high score to Game Center with this line of code: GameCenter.shared.submitScore(id: GameCenterLeaderboards.HighScore.rawValue) Now onto the logic of my code. For the longest time I struggled to figure out how to submit a score. I figured out that in Xcode 12, they deprecated a lot of functions that previously worked for me. Not is seems that we have to load all leaderboards (or the ones we want). That is the purpose behind the leaderboards private variable in the Game Center class. On the start up of the app, I call authenticate player. Once this callback is reached, I call loadLeaderboards which will load the leaderboards for each string id in an enum that I have elsewhere. Each of these leaderboards will be created as a Leaderboard object, and saved in the private leaderboard array. This is so I have access to these leaderboards later when I want to submit a score. Once the game is over, I am calling submitScore with the leaderboard id I want to post to. Right now, I only have a high score, but in the future I may add a parameter to this with the value so it works for other leaderboards as well. Therefore, no value is passed in since I am pulling from local storage which holds the high score. submitScore will get the leaderboard from the private leaderboard array that has the same id as the one passed in. Once I get the correct leaderboard, I submit a score to that leaderboard. Once the callback is hit, I receive the output "Successfully submitted score to leaderboard". This looks promising, except for the fact that no score is actually posted. At startup, I am calling updatePlayerHighScore, which is not complete - but for the purpose of my point, retrieves the high score of the player from the leaderboard and is printing it out to the console. It is printing out (0), meaning that no score was posted. The last thing I have questions about is the context when submitting a score. According to the documentation, this seems to just be metadata that GameCenter does not care about, but rather something the developer can use. Therefore, I think I can cross this off as causing the problem. I believe I implemented this correctly, but for some reason, nothing is posting to the leaderboard. This was ALOT, but I wanted to make sure I got all my thoughts down. Any help on why this is NOT posting would be awesome! Thanks so much! Mark

Prior to iOS 14.5, I adopted the following workflow for my Game Center enabled game - At the launch, if there is no authenticated GKLocalPlayer, then store the viewController passed in the completion handler and display it later to the user (i.e. not immediately after the app completes launching). I am using the following code for the authentication process -         GKLocalPlayer.local.authenticateHandler = {viewController, error in             if (viewController != nil){ //store the viewController and present it at a later time             } else if (GKLocalPlayer.local.isAuthenticated) { //successfully authenticated             } else { // player could not be authenticated             } Since iOS 14.5 the callback to the authenticationHandler seems to have changed. The login prompt is displayed automatically after app launch, if there is no authenticated player. I checked - the completionHandler is not even being called in this case before the login prompt is presented. If there is already an authenticated player on the device, then the handler is called as expected. How can I prevent the login prompt from being displayed automatically by the system? Is there a new workflow for authenticating a player from iOS 14.5 onwards? thanks,

HELLO WORLD! I am currently developing an amazing Unity mini Game. The game development has come to the deploying stage. Using Unity allows me to deploy this game on MacOS, iOS, Android and Windows which is fantastic . However, I really need this game to have the iOS widget extension as a key feature on mobile. Just like the "Steve" dinosaur game which can be played in widget. I had seen a lot of tutorials and youtube videos but still cant find a solution which make Unity iOS app into a widget. If I really want to make widget Game on iOS, do I need to develop the whole game all over again in xcode or using GameKit? Really hoping there's a way to simply convert the Unity iOS app into a widget.

Hello, In our Unity game, we've started experiencing application hiccup as a result of calling [[GKAccessPoint shared] setActive:YES]. The call itself does not take much time, but it seems to trigger something that causes a significant app stall causing running animations and transitions to feel laggy. This is new behaviour for us in iOS 16.1, as it did not cause any hiccups on 16.0 or earlier as far as we've noticed. We've tested the same build on 16.0 and 16.1, and it's working smooth on 16.0. The hiccup is present both when logged in and not logged into GameCenter. Did something change in 16.1 that requires us to use this API in a different way, or is it a (known) bug in iOS? My searches have not resulted in any similar reports. Best, -Trond

We are using apple unity plugin (gamekit) to authorized player using game center account. To get player the info we run a task from the plugin, var fetchItemsResponse = await GKLocalPlayer.Local.FetchItems(); But when this code run, there is an error on the xcode application on mac. The error is the following, Thread 1: EXC_BAD_ACCESS (code=257, address=0x2)

The documentation suggests that it should be possible to use a single shader with multiple instances of an SKNode, such that each instance will use the unique SKAttributes that are passed to it. Let's try that with an SKShapeNode. This is the fragment shader testFill.fsh, simply coloring based on the value for a_test: void main() {     gl_FragColor = vec4(vec3(a_test), 1.0); } And here we make two nodes `testNode0`, and `testNode1`, each using the same shader, but with a different value for `a_test`: class GameScene: SKScene {     override func didMove(to view: SKView) {         let testShader = shaderWithFilename( "testFill", fileExtension: "fsh", uniforms: [])         testShader.attributes = [             SKAttribute(name: "a_test", type: .float)         ] let testNode0 = SKShapeNode(rect: CGRect(x: 0.0, y: 0.0, width: 100.0, height: 100.0)) testNode0.fillShader = testShader testNode0.position = CGPoint(x: -100, y: 300) testNode0.setValue(SKAttributeValue(float: 0.2), forAttribute: "a_test") addChild(testNode0) let testNode1 = SKShapeNode(rect: CGRect(x: 0.0, y: 0.0, width: 100.0, height: 100.0)) testNode1.fillShader = testShader testNode1.position = CGPoint(x: 100, y: 300) testNode1.setValue(SKAttributeValue(float: 0.8), forAttribute: "a_test") addChild(testNode1) } } Here is the result: The squares are the same color, in particular the result of passing the second value 0.8 for a_test. Now, let's try the same thing with SKSpriteNode: class GameScene: SKScene {     override func didMove(to view: SKView) {         let testShader = shaderWithFilename( "testFill", fileExtension: "fsh", uniforms: [])         testShader.attributes = [             SKAttribute(name: "a_test", type: .float)         ] let testNode0 = SKSpriteNode() testNode0.size = CGSize(width: 100.0, height: 100.0) testNode0.shader = testShader testNode0.position = CGPoint(x: -100, y: 300) testNode0.setValue(SKAttributeValue(float: 0.2), forAttribute: "a_test") addChild(testNode0) let testNode1 = SKSpriteNode() testNode1.size = CGSize(width: 100.0, height: 100.0) testNode1.shader = testShader testNode1.position = CGPoint(x: 100, y: 300) testNode1.setValue(SKAttributeValue(float: 0.8), forAttribute: "a_test") addChild(testNode1) } } And it works! Why does the documentation not say that this is not possible with an SKSpriteNode? Why does an SKSpriteNode have a .setValue method if it does not function as expected? Is this a bug? Or something that is expected to be obvious? I am not sure, but I am sharing this in case somebody else ends up stuck on this issue as I was when otherwise trying to do something relatively straightforward. The solution (if your shape is a simple rect, as it is in my case) is to initialize an empty SKSpriteNode and size it accordingly, after which SKAttributes should work as expected. Apple, please either fix this, or update the documentation.

We are using the Apple Unity plugin (Gamekit) to authorize players, using a Game Center account. To get player info we run a task from the plugin, var fetchItemsResponse = await GKLocalPlayer.Local.FetchItems(); But when this code run, there is an error in Xcode. The error is the following, Thread 1: EXC_BAD_ACCESS (code=257, address=0x2) MacOS 12.5 Monterey Unity 2021.3.4f1 XCode 14.2 AppleCore Unity Package - 1.0.2 AppleGameKit Unity Package - 1.0.3 Crashes when calling FetchItems in Unity Installed in iPhone XR (iOS 15.2.1)

An issue appeared on IOS 16.4 when presenting GKMatchmakerViewController with the matchmakingMode set to inviteOnly. The view controller appears with the invite option as expected. But trying to tap it, the GKMatchmakerViewController disappears immediately. No problem on the previous IOS versions. It works also when matchmakingMode is not used at all.

Hi All! I'm being asked to migrate an app which utilizes iCloud KVS (Key Value Storage). This ability is a new-ish feature, and the documentation about this is sparse [1]. Honestly, the entire documentation about the new iCloud transfer functionality seems to be missing. Same with Game Center / GameKit. While the docs say that it should work, I'd like to understand the process in more detail. Has anyone migrated an iCloud KVS app? What happens after the transfer goes through, but before the first release? Do I need to do anything special? I see that the Entitlements file has the TeamID in the Key Value store - is that fine? <key>com.apple.developer.ubiquity-kvstore-identifier</key> <string>$(TeamIdentifierPrefix)$(CFBundleIdentifier)</string> Can someone please share their experience? Thank you! [1] https://developer.apple.com/help/app-store-connect/transfer-an-app/overview-of-app-transfer

I have implemented a standard GKLeaderboard in my app. The leaderboard includes the player's avatar, display name, and the score. I only use functionality provided by GameKit without any custom server functionality. I don't even have an own server. Still, my app got rejected with the following notice: We noticed that your app does not obtain the user's consent prior to uploading users' scores to a global leaderboard. To collect personal data with your app, you must make it clear to the user that their personal data will be uploaded to your server. What should I do here? Do I really have to obtain user's consent before uploading his score to Game Center?

We have Apple Unity Plugins imported to our project. We only include Apple.Core and Apple.GameKit. We have tried to import Empty 3D URP Sample Project and project worked on iOS but when we try to build for our project we got this error. On Empty Project, we just import the Apple Plugins, nothing about authentication or login to Apple Game Center. But in our main project, we login to Apple Game Center. We disabled the GameCenter Login code and game opens perfectly. No errors. The main problem is app crashes when we attempt to login to Apple Game Center. Do you have any suggestions for this? Unity: 2022.3.1f1 LTS (Current Latest LTS) OS: macOS Ventura 13.4 (Latest Stable) XCode: 14.3.1 (Latest Stable) Apple Plugins: Apple.Core 1.0.3 - Apple.GameKit 1.0.4 (Latest)

I got the sample project from Apple’s official documentation (https://developer.apple.com/documentation/gamekit/creating_real-time_games/). That sample project is a simple real-time game where two players are immediately aware of the actions each other takes. I figured out that one of the player's phone keeps buzzing when the voice chat is turned on. Suppose we have player A and player B. When the Voice Chat is activated, I noticed that player A can clearly hear player B's voice, but player B cannot hear anything except for their own voice, which can be heard by player A. Occasionally, this situation can switch. When a player is unable to hear anything, they only hear a constant beeping sound, even though their voice can still be heard by others. What happen? Anyone figured out how to solve this?

I have a Unity project, after setting up Apple.Gamekit plugin, it show up some error when build with XCode: ld: warning: arm64 function not 4-byte aligned: _unwind_tester from /Users/mac/Documents/Bonex/BoneX_demo1/iOSBuild_demo2/Libraries/libiPhone-lib.a(unwind_test_arm64.o) Undefined symbols for architecture arm64: "_GKLocalPlayer_Authenticate", referenced from: _GKLocalPlayer_GKLocalPlayer_Authenticate_mA13EED25E9E6BC8EAA0DE8E36D389AC904B41435 in Apple.GameKit.o (maybe you meant: _GKLocalPlayer_GKLocalPlayer_Authenticate_mA13EED25E9E6BC8EAA0DE8E36D389AC904B41435, _GKLocalPlayer_Authenticate_m3BBD62A177560D3F93691F97581B484A6EBA0836 ) "_GKLocalPlayer_GetIsMultiplayerGamingRestricted", referenced from: _GKLocalPlayer_GKLocalPlayer_GetIsMultiplayerGamingRestricted_m347F15CBE262C877190B5C7F4B55AFAD595705D5 in Apple.GameKit.o (maybe you meant: _GKLocalPlayer_GKLocalPlayer_GetIsMultiplayerGamingRestricted_m347F15CBE262C877190B5C7F4B55AFAD595705D5) "_GKLocalPlayer_GetIsPersonalizedCommunicationRestricted", referenced from: _GKLocalPlayer_GKLocalPlayer_GetIsPersonalizedCommunicationRestricted_mB1E3D7AE957AAA19E6ABBDCDEAD9821B09EB1DC1 in Apple.GameKit.o (maybe you meant: _GKLocalPlayer_GKLocalPlayer_GetIsPersonalizedCommunicationRestricted_mB1E3D7AE957AAA19E6ABBDCDEAD9821B09EB1DC1) "_GKLocalPlayer_GetIsUnderage", referenced from: _GKLocalPlayer_GKLocalPlayer_GetIsUnderage_mF266E6F8AA10922F3B02ED3A877D3C403EA46045 in Apple.GameKit.o (maybe you meant: _GKLocalPlayer_GKLocalPlayer_GetIsUnderage_mF266E6F8AA10922F3B02ED3A877D3C403EA46045) "_NSError_Free", referenced from: _NSError_NSError_Free_m0AFB1ED4BF090D6E5276479A1F53680D4FD47A4A in Apple.Core.o (maybe you meant: _NSError_NSError_Free_m0AFB1ED4BF090D6E5276479A1F53680D4FD47A4A) ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation) The plugin I added, which is provided by Apple: https://github.com/apple/unityplugins My : build appunityplugin used 2020.3.33f1 XCode to version 14.3.1 Please help! Thank you!!!

We are upgrading our ObjC-based iOS multiplayer game to Unity, so we plan to use the Unity Apple plugins. Specifically, we want to use Apple.Core and Apple.Gamekit packages. Cloned the project from https://github.com/apple/unityplugins Built the package using Unity 2020.3.33f1 In the Unity Editor, used Windows > Package Manager and added both packages from the tarball. No errors; all looks good. 5, Built & Run the project and installed the game on an iPhone 13 device. 6. Once the game starts, we see the following errors, and the game quits. Errors: '/private/preboot/Cryptexes/OS/usr/lib/swift/AppleCoreNative.framework/AppleCoreNative' (no such file), '/private/var/containers/Bundle/Application/0CF8E689-36C1-4AA6-9CF6-1E078EC1A3FB/Game.app/Frameworks/AppleCoreNative.framework/AppleCoreNative' (no such file), '/private/var/containers/Bundle/Application/0CF8E689-36C1-4AA6-9CF6-1E078EC1A3FB/Game.app/Frameworks/UnityFramework.framework/Frameworks/AppleCoreNative.framework/AppleCoreNative' (no such file), '/private/var/containers/Bundle/Application/0CF8E689-36C1-4AA6-9CF6-1E078EC1A3FB/Game.app/Frameworks/AppleCoreNative.framework/AppleCoreNative' (no such file), '/System/Library/Frameworks/AppleCoreNative.framework/AppleCoreNative' (no such file, not in dyld cache) Anyone, please help us to resolve the above issue?

I've build the Apple Unity plugins and added them to my Unity project. I've also loaded up the Apple.GameKit 1.0.4 GameKit Demo Scene. When I run this scene in the Unity editor, I get the prompt to select my Game Center account, and the username appears in the Editor Game window UI. From here, the other on-screen buttons work as well, I can pull up the Game Center Achievements window or the Realtime Matchmaking UI. If I build this project for macOS, and run the resulting app on the Mac, it isn't working. On the game UI, the "Local Player Name" text never updates to show the username of my GameCenter account. None of the on screen buttons work, nothing happens when clicked. If I build from unity for macOS with debug on, I can attach a debugger while running the app. If I do this, and add breakpoints, it seems that the application hits the first line from the Start() function of GameKitSample.cs : _localPlayer = await GKLocalPlayer.Authenticate(); But execution never seems to get past this point. It also doesn't seem to throw any exception. It just gets stuck here and I can't use any Game Kit features in the sample scene. What is missing? The same code seems to interact with Game Center just fine while running from the Unity Editor.

I'm trying to make a real-time peer-to-peer multiplayer game with GameKit/Game Center. I'm trying to store a dictionary of player IDs and scores ([String:Int]) to keep track of and share player scores during a game. Essentially, I want to be able to increment the score of a player locally, then send the updated scores dictionary to all the other players. However, the GKLocalPlayer.local.gamePlayerID seems to be in a completely different format than any other connected GKPlayer, so when I try to access the GKMatch.players with the gamePlayerID, it isn't found (and yes, I'm aware that GKMatch.players doesn't contain the local player). The GKPlayer has an 18-digit long integer, whereas the GKLocalPlayer has A:_ and then a long hexadecimal number (I think it's 37 digits in decimal). Can someone explain this difference or point to some resources that explain how I can implement this functionality correctly? Here's a simplified example of what I'm doing: var scores: [String:Int] // dictionary of [gamePlayerID:Score] scores[myMatch.players.first.gamePlayerID] = 3 scores[GKLocalPlayer.local.gamePlayerID] = 5 sendScores(scores) // sends data to all players using myMatch.sendData() /* When the receiving players decode and try to access scores[gamePlayerIDOfSendingPlayer], it isn't found because it's different from that player's gamePlayerID in the receiving player's GKMatch.players array */

Device : iPhone 13 Pro, iOS 17 Beta 5. Xcode : Both 14.3.1 and 15 Beta 5 My app is crashing for no reason after a touch gesture on my device, but it's working fine on a simulator. I have used GameKit but not imported Metal or SpriteKit. I'm getting these errors. CleverJacks[791:45451] Metal API Validation Enabled -[MTLDebugRenderCommandEncoder setRenderPipelineState:]:1615: failed assertion `Set Render Pipeline State Validation For color attachment 2, the render pipeline's pixelFormat (MTLPixelFormatRGBA16Float) does not match the framebuffer's pixelFormat (MTLPixelFormatR16Float). the pipelineState's per sample imageBlock usage(14) is greater than the encoder's perSample imageBlock usage(8)

Is it possible to remove/reset GmeCenter scores for my game app? I'd like to remove all scores so new users can start to compete. Is this possible? The games are educationally based and I'fd like to reset score for a new class.

My game crash when try FetchItems. Help me fix this please

What should an app do with an instance of GKGameCenterViewController when the app transitions to the background? Currently, my app just leaves it in place, displayed on top in full screen. Most of the time when my app resumes to the foreground, the GKGameCenterViewController is still displayed and is functional. However, sometimes when the app resumes, the GKGameCenterViewController's view has vanished and, additionally, my app doesn't receive a GK authentication event, so effectively it is "hung". This seems to happen most often when the app has been in the background a while, such as overnight. The app is still in memory, however, not starting cold. I would like to leave the GKGameCenterViewController/view in place when the app is backgrounded since the player may return to the game quickly and be right back where they left off. And most of the time that works. However, I need to solve the problem for the times it doesn't as I described above. Is there any guidance on what to do with a GKGameCenterViewController (or any GK controller for that matter) when an app goes into the background?