I want to compare the colors of two model entities (spheres). How can i do it? The method i'm currently trying to apply is as follows case let .color(controlColor) = controlMaterial.baseColor, controlColor == .green { // Flip target sphere colour if let targetMaterial = targetsphere.model?.materials.first as? SimpleMaterial, case let .color(targetColor) = targetMaterial.baseColor, targetColor == .blue { targetsphere.model?.materials = [SimpleMaterial(color: .green, isMetallic: false)] // Change to |1⟩ } else { targetsphere.model?.materials = [SimpleMaterial(color: .blue, isMetallic: false)] // Change to |0⟩ } } This method (baseColor) was deprecated in swift 15.0 changes to 'color' but i cannot compare the value color to each other.👾

I am making a SpriteKit game and I am trying to change the cursor image from the default pointer to a png image that I have imported into the project, but it’s not really working. when I run the project I can see the cursor image change for a brief second and then return to the default image. Here is my code: print(NSCursor.current) if let image = NSImage(named: customImage) {      print("The image exists")      cursor = NSCursor(image: image, hotSpot: .zero)      cursor.push()      print(cursor) } print(NSCursor.current) The above code is all contained in the didMove(:) function in GameScene. From the print statements I can see that the memory address of the NSCursor.current changes to that of cursor. HOWEVER, in the mouseMoved(:) call back function I print out the mouse location and the current cursor. I can see from these print stamens that the cursor memory address has again changed and no longer matches the custom cursor address… so I am not sure what is going on… Also, fyi the cursor is a global property within game scene so it should persist. Also, image is not nil. This is verified by the print statements I see Thanks

hello i am new to apple ecosystem and development i have some coding experience with c# now i like to develop my game for iphone 16 and up(due to ability to run ai models) but i am having hard time figuring out what to use there is a lot of resources for scene-kit but on its doc page it says its deprecated so i look at the reality-kit docs and tutorials and its strictly tells how to develop for visionos and i am really confused about this since there is no tutorials that shows how to develop a game for ios with reality-kit that does not focus visionos. i just want to develop for iphone 16 and up but i cant find resources focuses at that.

My app is being rejected and all I'm being told is that it is spam. I've tried improving various aspects of the game, but I just receive the same copy and paste rejection message each time. I have no idea if I'm moving in the right direction or what part of my game needs to be changed or improved. Is there a game quality benchmark document or some kind of resource I can use to better understand why my game is being rejected and how to bring it to a level that meets apple's standards.

Like many folks here, I've recently attempted to build Apple's Game Porting Toolkit on my machine and ran into compiler errors, but instead of going the usual route of downloading the prebuilt package (kindly provided by GCenX), I decided to see if I could force it to build (since it was obviously buildable at some point). Down below is the list of things I had to do to make it work. Disclaimer: There are several dirty hacks I had to attempt to force the system to do what I needed. Use at your own risk. Don't forget to run all brew commands from a Rosetta prompt: arch -x86_64 zsh Install openssl This one is easy. Just run brew tap rbenv/tap brew install rbenv/tap/openssl@1.1 Install Command Line Tools 15.1 This specific version is required since newer versions come with the linker that is not compatible with the custom compiler (game-porting-toolkit-compiler) that GPTK is using. However, by default 15.1 tools won't install on Sequoia since the installer complains that macOS version is too new. Obviously, Apple has their reasons to not allow this, but all we need is a compiler which should be mostly indifferent to the OS version. To trick the installer, we need to change OS requirement of the installer package. You can do it in four easy steps: Copy Command Line Tools.pkg from the mounted Command_Line_Tools_for_Xcode_15.1.dmg to some other directory. Expand the installer package: pkgutil --expand "Command Line Tools.pkg" CLT You might be prompted to install Command Line Tools when you call pkgutil, just install any version. Go to the newly created CLT folder and edit the Distribution file (it may appear as executable but it's just an xml). You would want to change allowed-os-versions to something greater than 15. Removing this section altogether might also work. When done, re-wrap the package: pkgutil --flatten CLT "Command Line Tools 2.pkg" Congratulations, now you should be able to install 15.1 tools on your OS! If you had to install newer Command Line Tools for pkgutil, delete them before installing 15.1: sudo rm -rf /Library/Developer/CommandLineTools Next step is to make Homebrew accept the outdated 15.1 tools, as by default it'll complain that they're outdated or corrupted. To shut it up, open /usr/local/Homebrew/Library/Homebrew/extend/os/Mac/diagnostic.rb and remove references to check_if_supported_sdk_available from a couple of fatal build check collections. Note - by default, Homebrew will auto-update on any invocation, which will overwrite any changes you've made to its internals. To disable this behavior, before running any brew commands in the terminal, run export HOMEBREW_NO_AUTO_UPDATE=1 After these manipulations, Homebrew might still complain about outdated Command Line Tools, but it won't be a fatal error anymore. Finally, we need to downgrade MinGW to 11.0.1, since the latest version spits out compiler errors when compiling Wine. Unfortunately, Homebrew does a bad job tracking versions of MinGW, so there is no automatic way to do it. Instead, you have to manually download and install old MinGW 11.0.1 formula from the Homebrew git repository. I used the commit from Sep 16, 2023: https://github.com/Homebrew/homebrew-core/blob/b95f4f9491394af667943bd92b081046ba3406f2/Formula/m/mingw-w64.rb Download the file above, save it in your current working directory, and then run brew install ./mingw-w64.rb If you had a newer version of MinGW already installed from the previous build attempts, you can unlink it before installing the one above: brew unlink mingw-w64 With Command Line Tools 15.1 and MinGW 11.0.1 you should now be able to build GPTK without errors: brew -v install apple/apple/game-porting-toolkit In the end, steps above worked for me, although more things could break in the future. I'm leaving the instructions here just to show that it's still possible to build GPTK manually instead of relying on third parties, but with all the hoops I had to jump through I can't really recommend it.

Hi Looking at the documentation for screenSpaceAmbientOcclusionIntensity, I noticed that it says this is supported on visionOS 1.0+: https://developer.apple.com/documentation/scenekit/scncamera/screenspaceambientocclusionintensity Could someone enlighten me as to how that would work? As far as I know, we don't use an SCNCamera on visionOS. So, what's the idea here? Can we activate SSAO on visionOS?

Is there any limitation in Vision Pro when loading scenes with large-scale models? ​Test Case: Asset: Composite USDA file containing ​10 individual models​ (total triangles count: ~4.2M) Simulator: Loads and renders correctly Real Device: Loads asset successfully but ​ failure during rendering phase: Environment abruptly dims System spontaneously reboots How can we resolve this issue? Below are excerpted logs preceding the crash: <<<< FigAudioSession(AV) >>>> audioSessionAVAudioSession_CopyMXSessionProperty signalled err=-19224 (kFigAudioSessionError_UnsupportedOperation) (getMXSessionProperty unsupported) at FigAudioSession_AVAudioSession.m:606 Attempted to add ornament: <MRUIPlatterOrnament: 0x10a658f00; _isInternal: YES; _displaceWindowChrome: NO; _canCaptureUI: NO; _isBeingRemoved: NO; contentAnchorPoint3D: "{0.5, 0.5, 0}"; position: <MRUIPlatterOrnamentRelativePosition: 0x105b68e70; anchorPoint: {0.5, 0.5, 1}>; rotation: "{{0, 0, 0}, 0}"; opacity: 1.000000; canFollowUser: YES; effectiveOffset: "{0, 0, 0}"; presentingViewController: 0x0; billboardingBehavior: 0x0; scalingBehavior: 0x0; relativeToParent: NO; nonHeritableDepthDisplacement: 0.000000; order: 0.000000; _window._determinedSize: {0, 0}; _window: (null)> to nil or non-supporting UIScene: <UIWindowScene: 0x10a8a0000; role: UISceneSessionRoleImmersiveSpaceApplication; persistentIdentifier: test.test:SFBSystemService-BA3A21A3-D1AB-42E2-8AF0-AE0AB83BE528; activationState: UISceneActivationStateUnattached>. No action taken. Failed to set dependencies on asset 2823930584475958382 because NetworkAssetManager does not have an asset entity for that id. apply fence tx failed (client=0x98490e18) [0x10000003 (ipc/send) invalid destination port] Failed to commit transaction (client=0xa86516e2) [0x10000003 (ipc/send) invalid destination port]

I’m building an app that uses RealityKit and specifically ARConfiguration.FrameSemantics.personSegmentationWithDepth. The goal is to insert an AR object into the scene behind a person, and an additional AR object in front of the person, while being as photo realistic as possible. Through testing, I’ve noticed that many times, the edges of the person segmentation mask are not well matched to the actual person, and parts of the person are transparent, with the AR object bleeding through. It’s sort of like a “bad green screen” effect, which I’d expect to see a little bit, but not to this extent. I’ve been testing on iPhone 16, iPhone 14 Pro, iPad Pro 12.9 inch 6th Generation, and iPhone 12 Pro, with similar results across all devices. I’m wondering what else I can do to improve this… either code changes, platform (like different iPhone models), or environment (like lighting, distance, etc). Attaching some example screen grabs and a minimum reproducible code sample. Appreciate any insights! import ARKit import SwiftUI import RealityKit struct RealityViewContainer: UIViewRepresentable { func makeUIView(context: Context) -> ARView { let arView = ARView(frame: .zero) arView.environment.sceneUnderstanding.options.insert(.occlusion) arView.renderOptions.insert(.disableMotionBlur) arView.renderOptions.insert(.disableDepthOfField) let configuration = ARWorldTrackingConfiguration() configuration.planeDetection = [.horizontal] if ARWorldTrackingConfiguration.supportsFrameSemantics(.personSegmentationWithDepth) { configuration.frameSemantics.insert(.personSegmentationWithDepth) } arView.session.run(configuration) arView.session.delegate = context.coordinator context.coordinator.arView = arView } func makeCoordinator() -> Coordinator { Coordinator(self) } class Coordinator: NSObject, ARSessionDelegate { var parent: RealityViewContainer var floorAnchor: ARPlaneAnchor? init(_ parent: RealityViewContainer) { self.parent = parent } func session(_ session: ARSession, didAdd anchors: [ARAnchor]) { if let arView,floorAnchor == nil { for anchor in anchors { if let horizontalPlaneAnchor = anchor as? ARPlaneAnchor, horizontalPlaneAnchor.alignment == .horizontal, horizontalPlaneAnchor.transform.columns.3.y < arView.cameraTransform.translation.y { // filter out ceiling floorAnchor = horizontalPlaneAnchor let backgroundEntity = BackgroundEntity() let anchorEntity = AnchorEntity(anchor: horizontalPlaneAnchor) anchorEntity.addChild(background) let foregroundEntity = ForegroundEntity() backgroundEntity.addChild(foregroundEntity) arView.scene.addAnchor(anchorEntity) arView.installGestures([.rotation, .translation], for: backgroundEntity) break // Stop after adding the first horizontal plane (floor) } } } } } }

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 random player, the native Game Center interface opens and begins the matchmaking process. Almost immediately after clicking "start", 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, as shown in the code snippet below, the task does not complete when the log appears. But when we manually cancel the matchmaking process, the "User cancel" log is correctly triggered. 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.Log("User cancel"); }, TaskContinuationOptions.OnlyOnCanceled); matchRequestTask.ContinueWith(t => { Debug.Log("Success"); }, TaskContinuationOptions.OnlyOnRanToCompletion); We have tested this on multiple Apple TV 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.

I want to display the refresh rate on the screen of the iPhone (14 Pro Max), but each app of the App Store's "Floating Clock", "Floating Clock Premium" and "Screen Renewal Rate - RefreshRate Realtime" can only display two of 60Hz and 120Hz, and I wonder if it can display numbers of 1Hz, 10Hz, tens of Hz, or more than 3 levels. Does anyone know how to do it?

The title is self-exploratory. I wasn't able to find the CAMetalDisplayLink on the most recent metal-cpp release (metal-cpp_macOS15_iOS18-beta). Are there any plans to include it in the next release?

Hi, I uptaded to the 15.2 my system. It was Turkish and I change the English for AI. But Image Playground is not working. My Playground app has been stuck at Downloading support for Image Playground now for about 4-5 days.

Attempting to bring up the access point yields the following error log: [GameCenterOverlayService] Failed to create GameOverlayUI Dashboard Remote Proxy [GameCenterOverlayService] Could not create endpoint for service name: com.apple.GameOverlayUI.dashboard-service [GameCenterOverlayService] Failed to create GameOverlayUI Dashboard Remote Proxy [GameCenterOverlayService] Could not create endpoint for service name: com.apple.GameOverlayUI.dashboard-service [GameCenterOverlayService] Failed to create GameOverlayUI Dashboard Remote Proxy [GameCenterOverlayService] Failed to create GameOverlayUI Dashboard Remote Proxy The same code (which is a single line setting 'active' to true) works on physical devices and on the simulator in iOS 18.6 I haven't been able to find any mention of this issue online. Any suggestions or help greatly appreciated.

Does anyone know why the following call fails? CGPDFOperatorTableSetCallback(operatorTable, "ID", &callback); The PDF specification seems to indicate that ID is an operator? BTW what is the proper topic/subtopic for questions about Quartz? Wasn't sure what topic on the new forums to post this under.

I am trying to model something similar to an odometer in RealityKit, where 3D numbers scroll up or down, as they increase or decrease, within a container entity. Is there a way for an Entity to clip its children so that anything that extends beyond its dimensions is not rendered?

my app use mtkview to render video, but [MTKView initwithFrame:device] takes 2-3s in some some 2019 macbook pro, system macos 15.0.1. how can I do?

subj And how in this case are beautiful system dials made with smoke effects and other particles?

I am suspecting that setting GCController.shouldMonitorBackgroundEvents = true does not actually make the game controllers inputs accessible to the app when it is in the background. About this value the official documentation says: A Boolean value that indicates whether the app needs to respond to controller events when it isn’t the frontmost app. Now the behavior is that when the app is in focus the users inputs do get correctly recognized but as soon as the app enters the background no inputs get recognized. The controller does not get reported as disconnecting and still works for example in launchpad. I am sure that about 2 months ago when I first used this it did work as one would expect. I also have seen that an app which lets users execute certain actions using their controller has stoped working recently, adding to my suspicion of the feature being broken. Here is a minimum reproducible example: import SwiftUI import GameController @main struct TestingControllerConnectionApp: App { @NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate var body: some Scene { WindowGroup { ContentView() } } } class AppDelegate: NSObject, NSApplicationDelegate { var statusItem: NSStatusItem? var controller: GCController? func applicationDidFinishLaunching(_ notification: Notification) { setupMenuBar() GCController.shouldMonitorBackgroundEvents = true NotificationCenter.default.addObserver( self, selector: #selector(controllerDidConnect), name: .GCControllerDidConnect, object: nil ) NotificationCenter.default.addObserver( self, selector: #selector(controllerDidDisconnect), name: .GCControllerDidDisconnect, object: nil ) } @objc private func setupMenuBar() { let menu = NSMenu() menu.addItem(NSMenuItem(title: "Quit", action: #selector(quitApp), keyEquivalent: "q")) statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength) statusItem?.button?.image = NSImage(resource: .controllerBar) statusItem?.menu = menu } @objc private func quitApp() { NSApp.terminate(nil) } @objc private func controllerDidConnect(_ notification: Notification) { if let controller = notification.object as? GCController { print("Controller connected") self.controller = controller if let gamepad = controller.extendedGamepad { gamepad.buttonA.pressedChangedHandler = { _, _, pressed in print("Button A pressed: \(pressed)") } } } } @objc private func controllerDidDisconnect(_ notification: Notification) { print("Controller disconnected") } } This is created in a completely fresh Xcode project and NSHumanInterfaceDeviceUsageDescription has been added. I am using a PS5 Controller and a Mac running MacOS 15.4.1 which has been restarted and only Xcode and the app have been opened. I have tested this with setting a multitude of different entitlements and capabilities including: NSHumanInterfaceDeviceUsageDescription Supports Controller User Interaction Required background modes -> App communicates with an accessory com.apple.security.device.bluetooth com.apple.security.device.hid com.apple.security.device.usb I have also set this value at different points in the code with no change of effect. Does anybody see if there is any fault in my code or my understanding of the effect of the value 'shouldMonitorBackgroundEvents'? Or is this the functionality actually being broken on Apples part?

Had anyone experienced convexCast causing a crash and what might be behind it? Here's the call stack:

I'm trying to position an Entity with inverse kinematics while dragging the handle only, but use forward kinematics (pose jointTransforms) otherwise. The System, Components, Gestures and Rig all seem to work individually. My approach is to add the IKComponent when dragging starts on the handle and removing the IKComponent it is released. The switch into IK works, but when removing the IKComponent the App crashes * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x8) * frame #0: 0x00000001aa5bb188 CoreRE`(anonymous namespace)::IKComponentSolverWrapper::getSolver() + 60 frame #1: 0x00000001aa5bafb0 CoreRE`re::internal::ikParametersNodeCallback(re::Slice<re::StringID>, re::Slice<re::RigDataValue>, re::Slice<re::StringID>, re::MutableSlice<re::RigDataValue>, void*) + 48 frame #2: 0x00000001aa52d090 CoreRE`re::(anonymous namespace)::resolveEvaluationContextCallback(re::EvaluationContext&, void*) + 152 frame #3: 0x00000001aa68c024 CoreRE`re::(anonymous namespace)::$_76::__invoke(re::Slice<unsigned long>, re::(anonymous namespace)::RegisterTable&) + 1080 frame #4: 0x00000001aa678c94 CoreRE`re::EvaluationModelSingleThread::evaluate(re::EvaluationContextSlices&) + 1188 frame #5: 0x00000001aa866984 CoreRE`re::SkeletalPoseRuntimeData::executeEvaluationTree() + 136 frame #6: 0x00000001aadf37ec CoreRE`re::ecs2::SkeletalPoseComponent::calculateSkeletalPoseBufferWithRig(re::ecs2::MeshComponent*, re::ecs2::RigComponent*, re::ecs2::SkeletalPoseBufferComponent*) + 492 frame #7: 0x00000001aadf4a84 CoreRE`re::ecs2::SkeletalPoseComponentStateImpl::processPreparingComponents(re::ecs2::System::UpdateContext const&, re::ecs2::BasicComponentStateSceneData<re::ecs2::SkeletalPoseComponent>*, re::ecs2::ComponentBuckets<re::ecs2::SkeletalPoseComponent>::BucketIteration, void*) + 268 frame #8: 0x00000001aadf54b0 CoreRE`re::ecs2::SkeletalPoseSystem::update(re::ecs2::System::UpdateContext) const + 732 frame #9: 0x00000001aaed3e54 CoreRE`re::internal::Callable<re::ecs2::ECSManager::configurePhaseECSSystems(re::Scheduler::ScheduleDescriptor&, re::ecs2::ECSSystemGroup, unsigned long)::$_1, void (float)>::operator()(float&&) const + 168 frame #10: 0x00000001ab40eda4 CoreRE`re::Scheduler::executePhase(unsigned long) + 440 frame #11: 0x00000001aa6a3b74 CoreRE`re::Engine::executePhase(re::FramePhase) + 144 frame #12: 0x000000023173de9c RealitySystemSupport`RCPSharedSimulationExecuteUpdate + 64 frame #13: 0x00000002276c9820 MRUIKit`__65-[MRUISharedSimulation _doJoinWithConnectionConfiguration:error:]_block_invoke.35 + 168 frame #14: 0x00000002276c8530 MRUIKit`__addCAPreFenceHandler_block_invoke + 32 frame #15: 0x000000018af22058 QuartzCore`CA::Transaction::run_commit_handlers(CATransactionPhase) + 112 frame #16: 0x000000018aef2ad4 QuartzCore`CA::Context::commit_transaction(CA::Transaction*, double, double*) + 592 frame #17: 0x000000018af21898 QuartzCore`CA::Transaction::commit() + 652 frame #18: 0x000000018af22dac QuartzCore`CA::Transaction::flush_as_runloop_observer(bool) + 68 frame #19: 0x0000000185a26820 UIKitCore`_UIApplicationFlushCATransaction + 48 frame #20: 0x0000000184f97af0 UIKitCore`_UIUpdateSequenceRun + 76 frame #21: 0x0000000185954290 UIKitCore`schedulerStepScheduledMainSection + 168 frame #22: 0x00000001859536d8 UIKitCore`runloopSourceCallback + 80 frame #23: 0x00000001804157fc CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24 frame #24: 0x0000000180415744 CoreFoundation`__CFRunLoopDoSource0 + 172 frame #25: 0x0000000180414eb0 CoreFoundation`__CFRunLoopDoSources0 + 232 frame #26: 0x000000018040f454 CoreFoundation`__CFRunLoopRun + 788 frame #27: 0x000000018040ecd4 CoreFoundation`CFRunLoopRunSpecific + 552 frame #28: 0x0000000190104b70 GraphicsServices`GSEventRunModal + 160 frame #29: 0x0000000185a27e30 UIKitCore`-[UIApplication _run] + 796 frame #30: 0x0000000185a2c058 UIKitCore`UIApplicationMain + 124 frame #31: 0x00000001d29558b4 SwiftUI`closure #1 (Swift.UnsafeMutablePointer<Swift.Optional<Swift.UnsafeMutablePointer<Swift.Int8>>>) -> Swift.Never in SwiftUI.KitRendererCommon(Swift.AnyObject.Type) -> Swift.Never + 164 frame #32: 0x00000001d29555dc SwiftUI`SwiftUI.runApp<τ_0_0 where τ_0_0: SwiftUI.App>(τ_0_0) -> Swift.Never + 84 frame #33: 0x00000001d265ecdc SwiftUI`static SwiftUI.App.main() -> () + 164 frame #34: 0x000000010303f1c4 Playground.debug.dylib`static PlaygroundApp.$main() at <compiler-generated>:0 frame #35: 0x000000010303f290 Playground.debug.dylib`main at PlaygroundApp.swift:7:8 frame #36: 0x0000000102f6d410 dyld_sim`start_sim + 20 frame #37: 0x000000010312e274 dyld`start + 2840 Is there a workaround or another way to switch between IK and FK?