There is a sample project from Apple here. It has a scene of a city at night and you can move in it. It basically has 2 parts: application code written in what looks like Objective-C (I am more familiar with C++), which inherits from things like NSObject, MTKView, NSViewController and so on - it processes input and all app-related and window-related stuff. rendering code that also looks like Objective-C. Btw both parts are mostly in .mm files (Obj-C++ AFAIK). The application part directly uses only one class from the rendering part - AAPLRenderer. I want to move the rendering part to C++ using metal-cpp. For that I need to link metal-cpp to the project. I did it successfully with blank projects several times before using this tutorial. But with this sample project Xcode can't find Foundation/Foundation.hpp (and other metal-cpp headers). The error says this: Did not find header 'Foundation.hpp' in framework 'Foundation' (loaded from '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.0.sdk/System/Library/Frameworks') Pls help

I'm wondering if anyone can suggest a workaround for the broken ARKit body tracking in iOS / iPadOS 18.0 and 18.1? The orientation for foot bones (and possibly other bones) is incorrect in the ARBodyAnchor returned via ARView.session.delegate update method. It works correctly in iOS / iPadOS 17.x. The same failure occurs in a SceneKit app via a ARBodyAnchor in ARSCNViewDelegate. You can easily verify the problem using Apple’s own sample app: https://developer.apple.com/documentation/arkit/arkit_in_ios/content_anchors/capturing_body_motion_in_3d Any help would be greatly appreciated.

I have a SPFx React application where I am printing the HTML page content using the javascript default window.print() functionality. Once I save the page as pdf from the print preview window and open it using Adobe Acrobat, the links(for eg -> Google) within the content are not clickable and appearing as plain text. I have tried to print random pages post searching with any keywords in Google and saved the files as pdfs, but, unfortunately, the links are still not clickable there as well. To check whether it is an Adobe Acrobat issue, I have performed the same print functionality from Android devices and shared the pdf file across the iOS devices and in that case, when opened using Adobe Acrobat, the links are appearing to be clickable. I am wondering whether it is something related to how the default print functionality works for iPadOS and iOS devices. Any insights on this would be really helpful. Thanks!!! Note: The links are clickable for MacOS as well as for Windows. #ios #ipados #javascript #spfx #react

Hey everyone, I’m trying to run Kingdom Come: Deliverance 2 using the Game Porting Toolkit, but I’m encountering a black screen when launching the game. From what I know about the game’s requirements, it might be using Shader Model 6.5, which supports advanced features like DirectX Raytracing (DXR) Tier 1.1. This leads me to suspect that the issue could be related to missing support for DirectX 12.1 Features or Shader Model 6.5 in GPTK. Does anyone know if these features are currently supported by GPTK? If not, are there any plans to implement them in future updates? Alternatively, is there any workaround for games that rely on Shader Model 6.5 and ray tracing? Thanks a lot for your help!

Now the examples of metal-cpp are target on desktop and using AppKit which is not supported on iOS. Is there any tips for developing with metal-cpp on mobile device?

Hello reader, I am facing an issue that I am not able to resolve. I have been able to create a demo project that demonstrates the issue, which I hope enables you to have a look as well and hopefully find a way to resolve it. What is the issue: I am using SKTileMapNode in order to draw tile maps. Instead of using the tilesets as you can use from within the Xcode editor, I prefer to do it all programmatically using tilesheets (for a plethora of reasons that I will leave out of this equation). This is the code of the gameScene: import SpriteKit import GameplayKit class GameScene: SKScene { private let tileSize = CGSize(width: 32, height: 32) override func didMove(to view: SKView) { super.didMove(to: view) let tileSet = createTileSet() let tileMap = SKTileMapNode(tileSet: tileSet, columns: 100, rows: 100, tileSize: tileSize) for column in 0..<tileMap.numberOfColumns { for row in 0..<tileMap.numberOfRows { guard let tileGroup = tileSet.tileGroups.randomElement() else { fatalError() } tileMap.setTileGroup(tileGroup, forColumn: column, row: row) } } addChild(tileMap) } private func createTileSet() -> SKTileSet { let tileSheetTexture = SKTexture(imageNamed: "terrain") var tileGroups = [SKTileGroup]() let relativeTileSize = CGSize(width: tileSize.width/tileSheetTexture.size().width, height: tileSize.height/tileSheetTexture.size().height) for idx in 0...2 { for jdx in 0...2 { let tileTexture = SKTexture(rect: .init(x: CGFloat(idx) * relativeTileSize.width, y: CGFloat(jdx) * relativeTileSize.height, width: relativeTileSize.width, height: relativeTileSize.height), in: tileSheetTexture) let tileDefinition = SKTileDefinition(texture: tileTexture, size: tileSize) let tileGroup = SKTileGroup(tileDefinition: tileDefinition) tileGroups.append(tileGroup) } } let tileSet = SKTileSet(tileGroups: tileGroups) return tileSet } override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { presentSceneAgain() } func presentSceneAgain() { if let frame = view?.frame { view?.presentScene(GameScene(size: frame.size), transition: .doorsCloseHorizontal(withDuration: 1.0)) } } } This demo project create a tilemapnode of 100 X 100 tiles. Then, it fills these 10.000 tiles with a random tile from the tilesheet named "terrain.png". This tile sheet contains many tiles, but I only take the 9 tiles (3 X 3) from the lower left corner as a random tile option. Thus, the 10.000 tiles get filled with one of these 9 tiles. So it doesnt look pretty or anything, but that isnt the purpose. Now, to create these 9 tile textures, I use the SKTexture(rectIn:) method on the source texture being "terrain.png". I think the code is quite clear in itself, but so far the explanation. When you run it, you should see the map being rendered. When you tap the scene, the scene will present a new instance of the scene. Not more than that. Now, when you do this, have a look at the RAM usage of the app. You will see it steadily increases over time, each time you click the scene and a new scene is presented. I looked deeper into what is happening, and what I see in the memory graph, is that for every present of the scene that is done, there are 3 SKTexture instances being created that are never released. The first time the scene is rendered, there 11 SKTexture instances allocated (I dont know why there are 11 though. I would expect 10: the source texture and the 9 tile textures). But then as mentioned, after a tap and a new present, I get 14 SKTexture, of which 3 are zombies, see image leak_1. Moreover, Xcode reports multiple additional leaks from Jet and Metal allocations, see image leak_all. As far as I know, the code presented is not retaining any references that it should not, and I suspect this leaks are happening somewhere inside SpriteKit. But I am not able to find exactly where, or how to resolve it. I hope someone can help with this issue.

Hello, Im trying to install it following these steps https://www.applegamingwiki.com/wiki/Game_Porting_Toolkit but i get an error with 'brew install apple/apple/game-porting-toolkit' ==> tar -xf crossover-sources-22.1.1.tar.gz --include=sources/clang/* --strip-components=2 ==> cmake -G Ninja -DCMAKE_VERBOSE_MAKEFILE=Off -DCMAKE_MAKE_PROGRAM=ninja -DCMAKE_VERBOSE_MAKEFILE=On -DCMAKE_OSX_ARCHITECTUR Last 15 lines from /Users/rafael/Library/Logs/Homebrew/game-porting-toolkit-compiler/02.cmake: -DLLVM_INSTALL_TOOLCHAIN_ONLY=On -DLLVM_ENABLE_PROJECTS=clang /private/tmp/game-porting-toolkit-compiler-20250519-44600-qwrjgl/llvm CMake Error at CMakeLists.txt:3 (cmake_minimum_required): Compatibility with CMake < 3.5 has been removed from CMake. Update the VERSION argument <min> value. Or, use the <min>...<max> syntax to tell CMake that the project requires at least <min> but has been updated to work with policies introduced by <max> or earlier. Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway. -- Configuring incomplete, errors occurred! If reporting this issue please do so to (not Homebrew/* repositories): apple/apple MacOS 15.3.1 Thank you in advanced Regards

New to achievements. I added them in App Store Connect and want to test them. Apple Documentation says this: "Before you begin testing your GameKit configuration, you need to enable Debug Mode. In Xcode, choose Product > Scheme > Edit Scheme. From the Run configuration, select Options and toggle Enable Debug Mode. To begin testing your achievement configuration, open the game Progress Manager. In Xcode, choose Debug > GameKit > Manage Game Progress." Sounds easy enough, but there is no "GameKit" under Debug in Xcode 16.2.

When testing my development build for gamecenter authentication, the game crashes. I've breadcrumbed it to the "await GKLocalPlayer.Authenticate();" call. Can't find any documentation on this issue and have been looking through the forums! I've already done all of the usual stuff like verifying bundle identifiers match, ensuring game center is enabled for the app, setting up app store connect, using a sandbox account, etc... Please point me to some resources if you know any. Any help is appreciated, I'm starting to lose hope here!

Our app uses Metal for image processing. We have found that if our app (and its possible intensive image processing) is started quickly after user is logged in, then calls to Metal may be hanging/stuck for a good while. Example: it can take 1-2 minutes for something that usually takes 3-5 seconds! Metal threads are just hanging in a memmove... In Activity Monitor we see a lot of things are happening right after log-in. But why Metal calls are blocking for so long is unknown to us... The workaround is to wait a minute before we start our app and start intensive image processing using Metal. But hard to explain this workaround to end-users... It doesn't happen on all computers but fairly easy to reproduce on some computers. We are using macOS 15.3.1. M1/M3 Max. Any good ideas for how to proceed with this problem and possible reach out to Apple engineers? Thanks! :)

I am working on adding synchronized physical properties to EntityEquipment in TableTopKit, allowing seamless coordination during GroupActivities sessions between players. Treating EntityEquipment's state to DieState is not a way, because it doesn't support custom collision shapes. I have also tried adding PhysicsBodyComponent and CollisionComponent to EntityEquipment's Entity. However, the main issue is that the position of EntityEquipment itself does not synchronize with the Entity's physics body, resulting in two separate instances of one object. struct PlayerPawn: EntityEquipment { let id: ID let entity: Entity var initialState: BaseEquipmentState init(id: ID, entity: Entity) { self.id = id let massProperties = PhysicsMassProperties(mass: 1.0) let material = PhysicsMaterialResource.generate(friction: 0.5, restitution: 0.5) let shape = ShapeResource.generateBox(size: [0.4, 0.2, 0.2]) let physicsBody = PhysicsBodyComponent(massProperties: massProperties, material: material, mode: .dynamic) let collisionComponent = CollisionComponent(shapes: [shape]) entity.components.set(physicsBody) entity.components.set(collisionComponent) self.entity = entity initialState = .init(parentID: .tableID, pose: .init(position: .init(), rotation: .zero), entity: self.entity) } } I’d appreciate any guidance on the recommended approach to adding synchronized physical properties to EntityEquipment.

1.Open the DingTalk macOS application, start a meeting, and initiate screen sharing. 2.The DingTalk app calls the [SCShareableContent getShareableContentWithCompletionHandler:] API. 3.The API takes over 40+ seconds to return a response.

I work on a team that provides an SDK for another game to handle various tasks like authentication. They are experiencing a case where devices using iOS 17 are failing to authenticate with GameCenter, receiving the message "The requested operation could not be completed because local player has not been authenticated." We imagine this is because they still have some setup to finish regarding GameCenter itself, and we're working with them to take care of that. However, on iOS 18, their app ends up waiting indefinitely for GameCenter authentication messages that it never receives. That's where we're puzzled. We expect them to have the same outcome regardless of OS version. We initiate GameCenter authentication by setting an authenticateHandler after some initial application setup. The handler has code to account for UI, errors, and successful authentication. On iOS 17, it's clear that it's getting called as expected because they receive an indication that the player isn't authenticated. But on iOS 18, it looks like the same handler code on iOS 18 isn't being called at all. Are there differences in how iOS 18 interacts with the authenticationHandler that we somehow aren't accounting for? Or is there potentially something else that we're doing incorrectly that is manifesting only on iOS 18? Here's a simplified version of our login function code (in Obj-C++). There is no OS-specific code, and the job that owns this function does stay in scope until after authentication is complete. void beginLogin() { // Snip: Check if the user is already logged in. // Snip: Prevent multiple concurrent calls to this function. auto authenticateHandler = ^(UIViewController* gcViewController, NSError* error) { if (gcViewController != nil) { // Snip: Display the UI } else if (error != nil) { // Snip: Handle the error. } else { if ([[GKLocalPlayer localPlayer] isAuthenticated]) { // Snip: Handle successful authentication. } else { // Snip: Handle other case. } } }; [[GKLocalPlayer localPlayer] setAuthenticateHandler: authenticateHandler]; }

The game physics work as expected using GTPK 2.0 using Crossover 24 or Whisky. However, using GPTK 2.1 with Crossover 25, the player and camera physics misbehave. See https://www.reddit.com/r/WWEGames/comments/1jx9mph/the_siamese_elbow/ and https://www.reddit.com/r/WWEGames/comments/1jx9ow4/camera_glitch/ Full video also linked in the Reddit post. I have also submitted this bug via the feedback assistant.

Dear Apple, there is still no support for WebGPU via WebView. Do you have a roadmap on when you plan to support it? That would be very helpful to release our new game.

Hello, We are working on a real-time 2-player online game targeting multiple Apple devices. The following issue only occurs on tvOS: When selecting matchmaking to connect with another player, the native Game Center interface opens and begins the matchmaking process. Almost immediately, the following log appears in the console, and the matchmaking screen remains indefinitely without completing: Timeout while starting matching with request: <GKMatchRequestInternal 0x30d62f690> { defaultNumberOfPlayers : 0 isLateJoin : 0 localPlayerID : U:bea182d69b85f0839e3958742fbc4609 matchType : 0 maxPlayers : 2 minPlayers : 2 playerAttributes : 4294967295 playerGroup : 1 preloadedMatch : 0 recipientPlayerIDs : <__NSArrayM 0x3034ed5c0> {} recipients : <__NSArrayM 0x3034ee280> {} restrictToAutomatch : 0 version : 1 archivedSharePlayInviteeTokensFromProgrammaticInvite, inviteMessage, localizableInviteMessage, messagesBasedRecipients, properties, queueName, recipientProperties, rid, sessionToken : (null) } . Error: (null) However, the task does not complete when the log appears (our Debug.Log are nerver called). But if we manually cancel the matchmaking process, the "User cancel" log is correctly triggered. Here is a code snippet for the request : var gkMatchRequest = GKMatchRequest.Init(); gkMatchRequest.MinPlayers = 2; gkMatchRequest.MaxPlayers = 2; var matchRequestTask = GKMatchmakerViewController.Request(gkMatchRequest); matchRequestTask.ContinueWith(t => { Debug.LogException(t.Exception); }, TaskContinuationOptions.OnlyOnFaulted); matchRequestTask.ContinueWith(t => { Debug.LogInfo("User cancel"); }, TaskContinuationOptions.OnlyOnCanceled); matchRequestTask.ContinueWith(t => { Debug.LogInfo("Success"); }, TaskContinuationOptions.OnlyOnRanToCompletion); We have tested this on multiple devices and network types (Wi-Fi, 5G, Ethernet), but we consistently encounter this bug along with the same log message. Could you please help us understand or resolve this issue? Thank you.

Hello, I am trying to use the subdivision mesh rendering option. I can see it working in RealityComposerPro: But not when loading asset and displaying in Simulator: Using this code: import SwiftUI import RealityKit import RealityKitContent struct AirspaceView: View { // MARK: - VIEW BODY var body: some View { RealityView { content in if let a = try? await Entity(named: "Models/Test/Test.usdc", in: realityKitContentBundle) { content.add(a) } } } } Any ideas why?

In the SceneKit framework, I want to render a point cloud and need to set the minimumPointScreenSpaceRadius property of the SCNGeometryElement class, but it doesn't work. I searched for related issues on the Internet, but didn't get a final solution. Here is my code: - (SCNGeometry *)createGeometryWithVector3Data:(NSData *)vData colorData: (NSData * _Nullable)cData{ int stride = sizeof(SCNVector3); long count = vData.length / stride; SCNGeometrySource *dataSource = [SCNGeometrySource geometrySourceWithData:vData semantic:SCNGeometrySourceSemanticVertex vectorCount:count floatComponents:YES componentsPerVector:3 bytesPerComponent:sizeof(float) dataOffset:0 dataStride:stride]; SCNGeometryElement *element = [SCNGeometryElement geometryElementWithData:nil primitiveType:SCNGeometryPrimitiveTypePoint primitiveCount:count bytesPerIndex:sizeof(int)]; element.minimumPointScreenSpaceRadius = 1.0; // not work element.maximumPointScreenSpaceRadius = 20.0; SCNGeometry *pointCloudGeometry; SCNGeometrySource *colorSource; if (cData && cData.length != 0) { colorSource = [SCNGeometrySource geometrySourceWithData:cData semantic:SCNGeometrySourceSemanticColor vectorCount:count floatComponents:YES componentsPerVector:3 bytesPerComponent:sizeof(float) dataOffset:0 dataStride:stride]; pointCloudGeometry = [SCNGeometry geometryWithSources:@[dataSource, colorSource] elements:@[element]]; } else { pointCloudGeometry = [SCNGeometry geometryWithSources:@[dataSource] elements:@[element]]; } return pointCloudGeometry; }

Hi, I am trying to detect if all the screen are in fullscreen mode. The current approach is to get all windows' information from CGWindowListCopyWindowInfo and then compare the frame and coordinate with the frame of NSScreen.screens. However, there is a problem, the y position of the window seems to be relative to the screen. As it is not absolute position, I cannot compare it with the coordinate of the screen. Does anyone know if there are other information that I can use? Or is there a way to retrieve the absolute position or screen ID from the GCWIndow object?

In Xcode version 16.2 (16C5032a) I created: One [ScenekitApp] [File/New/Project/iOS/Game/Game Technology: SceneKit]. Three custom Frameworks [File/New/Project/iOS/Framework] [ASCSource.framework, ASCCommon.framework and ASCCoreData.framework]. In the four projects the [Minimum Deployments=iOS 15.0], [Swift version=6.0] and [BUILD_LIBRARY_FOR_DISTRIBUTION=Yes]. I directly installed the [Zip.framework] in [ASCSource.framework] without [pod init/pod install] and in the [General tab] [Frameworks, Libraries and Embeded Content] [Zip.framework Embed&Sign]. I installed the three frameworks [ASCSource.framework, ASCCommon.framework and ASCCoreData.framework] in [ScenekitApp] and everything works perfectly in Xcode version 16.2(16C5032a). I updated Xcode version 16.2(16C5032a) to Xcode version 16.3(16E140) and some errors in the SDKs were indicated. [Failed to build module 'ASCSource'; this SDK is not supported by the compiler (the SDK is built with 'Apple Swift version 6.0.3 effective-5.10 (swiftlang-6.0.3.1.10 clang-1600.0.30.1)', while this compiler is 'Apple Swift version 6.1 effective-5.10 (swiftlang-6.1.0.110.21 clang-1700.0.13.3)'). Please select a toolchain which matches the SDK]. [Failed to build module 'Zip'; this SDK is not supported by the compiler (the SDK is built with 'Apple Swift version 6.0.3 effective-5.10 (swiftlang-6.0.3.1.10 clang-1600.0.30.1)', while this compiler is 'Apple Swift version 6.1 effective-5.10 (swiftlang-6.1.0.110.21 clang-1700.0.13.3)'). Please select a toolchain which matches the SDK]. If I recompile all frameworks in Xcode version 16.3 (16E140) it will work, but I don't think it will be a good solution. I found some discussions in links like the following without success. https://github.com/firebase/firebase-ios-sdk/issues/13727 https://stackoverflow.com/questions/70556401/swift-version-conflict-this-sdk-is-not-supported-by-the-compiler-please-select Any help is welcome. Thanks everyone!!!