Here is complete code that works on an Xcode Playground but not on an iPad. Is Apple moving away from using UIKit on Swift Playgrounds? Many other Apple Playground Books Stopped working too. However, Playground Books like Shapes still work. Based on this, it does seem to be a bug.
When run on iPad
let node = SKShapeNode(circleOfRadius: 100.0)
throws an error.
import PlaygroundSupport
import SpriteKit
class GameScene: SKScene {
private var label : SKLabelNode!
private var spinnyNode : SKShapeNode!
override func didMove(to view: SKView) {
scene?.backgroundColor = .blue
let node = SKShapeNode(circleOfRadius: 100.0)
node.position = CGPoint(x: 100, y: 200)
scene?.addChild(node)
}
@objc static override var supportsSecureCoding: Bool {
// SKNode conforms to NSSecureCoding, so any subclass going
// through the decoding process must support secure coding
get {
return true
}
}
func touchDown(atPoint pos : CGPoint) {
}
func touchMoved(toPoint pos : CGPoint) {
}
func touchUp(atPoint pos : CGPoint) {
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { touchDown(atPoint: t.location(in: self)) }
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { touchMoved(toPoint: t.location(in: self)) }
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { touchUp(atPoint: t.location(in: self)) }
}
override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
for t in touches { touchUp(atPoint: t.location(in: self)) }
}
override func update(_ currentTime: TimeInterval) {
// Called before each frame is rendered
}
}
// Load the SKScene from 'GameScene.sks'
let sceneView = SKView(frame: CGRect(x:0 , y:0, width: 640, height: 480))
let scene = GameScene(size: CGSize(width: 600, height: 600))
// Set the scale mode to scale to fit the window
scene.scaleMode = .aspectFill
// Present the scene
sceneView.presentScene(scene)
PlaygroundSupport.PlaygroundPage.current.liveView = sceneView
