I'm constructing a Swift Playground with UIKit that contains an SKScene. After creating the code I'm planning to use within an Xcode project, I tried to adapt it into my Playground. I encountered an issue while running the Playground - when a new SKSpriteNode is added to the Scene, the new and existing nodes jitter, freeze, and lag for a split-second, the FPS counter drops to around 49fps, then returns to smooth 60fps. No errors or warnings are spat, and the console is completely empty. The scene in the project didn't have this issue, and I can't recreate it on another project - even when I directly copy-paste the code from the Playground to the project. I've seen other posts with this question - and made a few myself elsewhere - and there's been no responses. I desperately need help for this as nothing I've tried is working and the deadline is in a few days! Thanks! The code that is in effect for this SKScene is below. class SimulatorController: UIViewController { override func loadView() { let view = SKView() let scene = GameScene(size: view.bounds.size) view.showsFPS = true view.showsNodeCount = true view.ignoresSiblingOrder = true scene.scaleMode = .resizeFill view.presentScene(scene) self.view = view } } class GameScene: SKScene { override func didMove(to view: SKView) { run(SKAction.repeatForever(SKAction.sequence([ SKAction.run(addNeutron), SKAction.wait(forDuration: 1) ]) )) } func random() -> CGFloat { return CGFloat(Float(arc4random()) / 0xFFFFFFFF) } func random(min: CGFloat, max: CGFloat) -> CGFloat { return random() * (max - min) + min } func addNeutron() { let neutron = SKSpriteNode(imageNamed: "neutron.heic") neutron.size = CGSize(width: 20, height: 20) neutron.physicsBody = SKPhysicsBody(rectangleOf: neutron.size) neutron.physicsBody?.isDynamic = true let actualX = random(min: 0, max: size.width) let actualY = random(min: 0, max: size.height) neutron.position = CGPoint(x: actualX, y: actualY) addChild(neutron) let actualDuration = random(min: CGFloat(2.0), max: CGFloat(4.0)) let actualX2 = random(min: 0, max: size.width) let actualY2 = random(min: 0, max: size.height) let actionMove = SKAction.move(to: CGPoint(x: actualX2, y: actualY2), duration: TimeInterval(actualDuration)) let actionMoveDone = SKAction.removeFromParent() neutron.run(SKAction.sequence([actionMove, actionMoveDone])) } }

For the submission you have to create a .swiftpm file. I have created a playground app on my Mac and created my app in there, however, on all the previous submission from previous years I see that when it is opened on iPad, there are these explanations and pages on the left side. Like a story. Am I able to do this on a Mac as well? Or is that not possible. I would appreciate it if someone knows the answer 😁

Hi all, According to the guidelines: All content should be in English. I wish to ask if this indicates that there can be absolutely no foreign language. For example, would a project that is in English but aims to educate others about languages be acceptable? Thanks - James

I need some help adding an .scn file to my submission for this year. I've tried creating an art.scnassets file from xcode within the project, adding the .scn file and trying to use it with SCNScene(named: "scene.scn"), but I get a blank SCNView and printing value of the SCNScene, I get nil. Please help in this context ASAP.

My playground app runs perfectly fine when I compile it on Xcode on my Mac to run it on my iPad, but for some reason it won't run at all when I try running it directly on Swift Playgrounds (the file opens and it doesn't give me any errors, but it won't compile). How might I be able to fix this? My app is a .swiftpm file and I'm using Swift Playgrounds 4.0.2 on iPadOS 15.4.1. Any help would be greatly appreciated!

Hi, I am Sanjiv, a Highschool student who is trying to participate in wwdc student scholarship , and I have a doubt in swift I have two bool variables, one global and one local. Once the value of the global variable changes I want the value of the local variable also to change. I want this for navigation. I have a gameScene and once the level is completed it needs to go to the next navigation view. I have tried multiple methods but none worked. Any help will be appreciated.

I made my AR app project on Xcode swift playground app and it's successfully work on iPad by debugging but it's not work when i open .swiftom file on iPad Pro. So my question is my project can judge on Xcode by debugging on iPad Pro or you will open my zip file directly on iPad Pro I'm confuse. What should I choose in submission run on Xcode or iPad pro?