Hi, I've got a Swift Framework with a bunch of Metal files. Currently users have to manually include a Metal Lib in their bundle provided separately, to use the Swift Package.
First question; Is there a way to make a Metal Lib target in a Swift Package, and just include the .metal files? (without a binary asset)
Second question; If not, Swift 5.3 has resource support, how would you recommend to bundle a Metal Lib in a Swift Package?
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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
GCVirtualController isn't displaying when used with SKScene class. The Virtual controllers appear but then it seems that they are obscured by the SKScene itself!? The documentation says that calling connect() will display the virtual controllers but I seem to be missing how to add the controllers to the SKScene?
class GameScene: SKScene {
private var _virtualController: Any?
@available(iOS 15.0, *)
public var virtualController: GCVirtualController? {
get { return self._virtualController as? GCVirtualController }
set { self._virtualController = newValue }
}
override func didMove(to view: SKView) {
let background = SKSpriteNode(imageNamed: ".jpg")
background.zPosition = -1
addChild(background)
let virtualConfig = GCVirtualController.Configuration()
virtualConfig.elements = [GCInputLeftThumbstick, GCInputRightThumbstick, GCInputButtonA, GCInputButtonB]
virtualController = GCVirtualController(configuration: virtualConfig)
virtualController?.connect()
}
}
I've also tried adding the virtual controllers in the UIViewController but this doesn't work either.
I am creating a RealityKit scene that will contain over 12,000 duplicate cubes arranged in a circle (see image below). This is for some high-energy physical simulations I am doing. I accomplish this scene by creating a single cube and cloning it a bunch of times. So, I there is a single MeshResource and Material even though there are a lot of entities. I have confirmed this by checking with Swift's === operator. Even with this, the program is unworkably slow.
Any suggestions or tricks that could help with this type of scene?
Using a single geometry was the trick to getting SceneKit to work fast with geometries like this. I've been updating my software to RealityKit because I far prefer the structure of RealityKit over SceneKit.
I am trying to build a website where I would like to render the USDZ 3D model on the browser without the AR feature. The user should be able to interact with the 3D model using a pointing device (mouse). If the user wants to see the 3D model in AR she/he can do so by loading the page on a compatible device where the 3D model can be projected in AR.
I am looking for an answer to how to display the USDZ 3D model on the browser without the AR feature.
On Scenekit, using SCNShapewe can create SCN geometry from SwiftUI 2D shapes/beziers:https://developer.apple.com/documentation/scenekit/scnshape
Is there an equivalent in RealityKit?
Could we use the generate(from:) for that?https://developer.apple.com/documentation/realitykit/meshresource/3768520-generate
https://developer.apple.com/documentation/realitykit/meshresource/3768520-generate
Now I am using iOS 16 beta 6, I can get buttonA/buttonB is pressed event. but cannot get accelerator motion data info.
//work
buttonA?.valueChangedHandler = {(_ button: GCControllerButtonInput, _ value: Float, _ pressed: Bool) -> Void in
print(">>> ButtonA tapped")
}
//work
buttonB?.valueChangedHandler = {(_ button: GCControllerButtonInput, _ value: Float, _ pressed: Bool) -> Void in
print(">>> ButtonB tapped")
}
// this is not works
gameController.motion?.valueChangedHandler = { (motion: GCMotion)->() in
print(">>>> motion data \(motion.acceleration.x) \(motion.acceleration.y) \(motion.acceleration.z)")
if let delegate = self.motionDelegate {
delegate.motionUpdate(motion: motion)
}
}
Is there any plan to support this?
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?
Hi all
I have two mystic issues with saving and fetching data to and from iCloud. Both repro only after first launch of an app.
1. [GKLocalPlayer fetchSavedGamesWithCompletionHandler:]
After first attempt I can see 0 saved games (but i know that there is at least one saved game) and there is no any error. In case if I try fetch one more time (without any additional actions) even immediately after first attempt I receive saved games correctly (not 0)
2. [GKLocalPlayer saveGameData: withName: completionHandler:]
After first attempt I can see error The requested operation could not be completed because local player has not been authenticated. In case if I try save one more time (without any additional actions) even immediately after first attempt I can save data successfully without any error
I found the same issue in StackOverflow, but there are no fixes...
I searched the Metal Shading Language Specification Version 3.0 document, however I cannot see any function for inverting a matrix. Is there really no function in Metal for inverting a matrix?
I often need to this in linear equations and have so far resorted to writing the necessary function each time, most of the time just copy-and-pasting code.
inverse exists in SIMD and GLSL, so why not in Metal? It seems so unexpected that this function does not exist that I am almost certain I have just overlooked something obvious. I even tried 1 / M, to no avail.
Hi,
The metal-cpp distribution appears to only contain headers for Foundation and Quartzcore. The LearnMetalCPP download [1] provides a ZIP with an metal-cpp-extensions directory containing AppKit.hpp and MetalKit.hpp headers. First question: Are these headers distributed anywhere else more publicly? Without these headers only the renderer can be fully written in C++ as far as I can tell, i.e. no complete C++ NSApplication. Second question: Will these headers, if needed, be maintained (e.g. updated and/or extended) by Apple along side metal-cpp?
[1] https://developer.apple.com/metal/cpp/
Thank you and regards.
I'm trying to create a Apple Watch game using Xcode 14.2 and watchOS 9. Getting started creating a watchOS App seems pretty straight forward, and getting started creating a game project via the starter template seems easy enough. Trying to put these two together though doesn't seem to work (or is not straight foward). The documentation specifies limitations on what libraries can be used with watchOS noting WKInterfaceSKScene, but doesn't give any specific examples of how to start out a WatchOS project using this. Additionally nearly every online tutorial that I'm able to find uses Storyboards to create a watchOS game, which does not seem to be supported in the latest version of watchOS or Xcode. Can anyone provide example starter code using the watchOS App project starter that that loads with a small colored square on the screen that moves from left to right using the WKInterfaceSKScene library?
I've tried the Apple documentation, asking ChatGPT for a sample or reference links, and various tutorials on YouTube and elsewhere.
Guys,
In my main application bundle, I have included a helper bundle in its Resources. When the helper requests Accessibility permission, the system modal window displays what the helper is requesting permission for.
However, when the helper requests permission for Screen Recording, the system modal window displays that the main application bundle is requesting permission, which includes the helper.
This issue seems to be specific to Ventura, as both requests are displayed on behalf of the helper in Monterey.
I'm wondering if this is a known issue or limitation or if there is a way to make the permission request specifically from the helper.
I am running the RoomPlan Demo app and keep getting the above error and when I try to find someplace to get the archive in the Metal Libraries my searches come up blank. There are no files that show up in a search that contain such identifiers. A number of messages are displayed about "deprecated" interfaces also. Is it normal to send out demo apps that are hobbled in this way?
, it is after update to Xcode 14.3:
[default] CGSWindowShmemCreateWithPort failed on port 0
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
Hi! I am currently trying to upload my iOS app to App Store Connect. Unfortunately, code signing fails with the following error: "Code object is not signed at all.", referencing a binary Metallib (created with metal-tt and an mtlp-json script). I am using Xcode's automatically managed signing and the binary metallib is located inside the "Resources" directory of a framework that I am including with "Embed and sign" in the app. Could anyone give some guidance on what I need to change to make code signing work? Thank you.
Will visionOS support SceneKit?
I'm really excited about the Object Capture APIs being moved to iOS, and the complex UI shown in the WWDC session.
I have a few unanswered questions:
Where is the sample code available from?
Are the new Object Capture APIs on iOS limited to certain devices?
Can we capture images from the front facing cameras?
Hello Dev Community,
I've been thinking over Apple's preference for USDZ for AR and 3D content, especially when there's the widely used GLTF. I'm keen to discuss and hear your insights on this choice.
USDZ, backed by Apple, has seen a surge in the AR community. It boasts advantages like compactness, animation support, and ARKit compatibility. In contrast, GLTF too is a popular format with its own merits, like being an open standard and offering flexibility.
Here are some of my questions toward the use of USDZ:
Why did Apple choose USDZ over other 3D file formats like GLTF?
What benefits does USDZ bring to Apple's AR and 3D content ecosystem?
Are there any limitations of USDZ compared to other file formats?
Could factors like compatibility, security, or integration ease have influenced Apple's decision?
I would love to hear your thoughts on this. Feel free to share any experiences with USDZ or other 3D file formats within Apple's ecosystem!