How i can place object in Scene? SpriteKit - xcode

Question

File GameScene have class GameScene, class GameScene have CirclePhysicsDefault:
func circlePhysicsDefault() {
var Circle = SKShapeNode(circleOfRadius: 40)
Circle.position = CGPointMake(500, 500)
Circle.name = "defaultCircle"
Circle.strokeColor = SKColor.blackColor()
Circle.glowWidth = 10.0
Circle.fillColor = SKColor.yellowColor()
Circle.physicsBody = SKPhysicsBody(circleOfRadius: 40)
Circle.physicsBody.dynamic = true
self.addChild(Circle)
}
In file GameViewController i type:
#IBAction func addOneCircle(sender: AnyObject) {
GameScene().circlePhysicsDefault()
}
I linked this to button.
Run application, push the button - nothing happens.
If in GameScene function didMoveToView i call function circlePhysicsDefault, then app launch circle will be placed.
File GameViewController:
import UIKit
import SpriteKit
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
/* Pick a size for the scene */
let scene = GameScene(fileNamed:"GameScene")
// Configure the view.
let skView = self.view as SKView
skView.showsFPS = true
skView.showsNodeCount = true
/* Sprite Kit applies additional optimizations to improve rendering performance */
skView.ignoresSiblingOrder = true
/* Set the scale mode to scale to fit the window */
scene.scaleMode = .AspectFill
skView.presentScene(scene)
}
#IBAction func addOneCircle(sender: AnyObject) {
GameScene(fileNamed:"GameScene").circlePhysicsDefault()
}
override func shouldAutorotate() -> Bool {
return true
}
override func supportedInterfaceOrientations() -> Int {
if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
return Int(UIInterfaceOrientationMask.AllButUpsideDown.toRaw())
} else {
return Int(UIInterfaceOrientationMask.All.toRaw())
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Release any cached data, images, etc that aren't in use.
}
override func prefersStatusBarHidden() -> Bool {
return false }
}
File GameScene:
import SpriteKit
class GameScene: SKScene {
override func didMoveToView(view: SKView) {
/* Setup your scene here */
circlePhysicsDefault()
}
override func update(currentTime: CFTimeInterval) {
/* Called before each frame is rendered */
}
func sceneSetting() {
self.backgroundColor = SKColor.grayColor()
self.physicsWorld.gravity = CGVectorMake(0.01, -2)
}
func circlePhysicsDefault() {
var Circle = SKShapeNode(circleOfRadius: 40)
Circle.position = CGPointMake(500, 500)
Circle.name = "defaultCircle"
Circle.strokeColor = SKColor.blackColor()
Circle.glowWidth = 10.0
Circle.fillColor = SKColor.yellowColor()
Circle.physicsBody = SKPhysicsBody(circleOfRadius: 40)
Circle.physicsBody.dynamic = true
self.addChild(Circle)
}
}

Answer 1

you are creating a new instance on key press, store a weak reference to the scene and call the method from the wished instance.
#IBAction func addOneCircle(sender: AnyObject) {
myGameSceneRef.circlePhysicsDefault()
}
So now please try the following:
#IBAction func addOneCircle(sender: AnyObject) {
let scene = ((self.view as SKScene).scene as GameScene)
scene.circlePhysicsDefault()
}
Or maybe change "let" to "var"