Adding button to GameScene.swift programatically and transitioning scenes when pressed - swift

Question

I have been working forever trying to implement a way to add a button and when pressed the scene transitions to my second view. I have read other posts but have had ZERO luck for something in Swift 3. I'm really confused and have tried but failed many times. Hope you can help! Thanks!
Swift 3 in SpriteKit.

Answer 1

What do you mean transition to a new view?. When making SpriteKit games we tend to transition between SKScenes and not views. So do not try to create different views or viewControllers for each scene, just transition between SKScenes directly.
In regards to buttons, there is plenty tutorials available. You basically create a SKSpriteNode as a button and look for it in touchesBegan and do something when its pressed.
This is a simple example here
https://nathandemick.com/2014/09/buttons-sprite-kit-using-swift/
Essential you can create a button subclass similar to this.
class Button: SKNode {
let defaultButton: SKSpriteNode
let activeButton: SKSpriteNode
var action: () -> ()
init(defaultButtonImage: String, activeButtonImage: String, buttonAction: #escaping () -> ()) {
defaultButton = SKSpriteNode(imageNamed: defaultButtonImage)
activeButton = SKSpriteNode(imageNamed: activeButtonImage)
activeButton.isHidden = true
action = buttonAction
super.init()
isUserInteractionEnabled = true
addChild(defaultButton)
addChild(activeButton)
}
required init(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
activeButton.isHidden = false
defaultButton.isHidden = true
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let location = touch.location(in: self)
if defaultButton.contains(location) {
activeButton.isHidden = false
defaultButton.isHidden = true
} else {
activeButton.isHidden = true
defaultButton.isHidden = false
}
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let location = touch.location(in: self)
if defaultButton.contains(location) {
action()
}
activeButton.isHidden = true
defaultButton.isHidden = false
}
}
}
and than in your relevant SKScene add your buttons
class StartScene: SKScene {
override func didMove(to view: SKView) {
let playButton = Button(defaultButtonImage: "button", activeButtonImage: "button_active", buttonAction: loadGameScene)
playButton.position = CGPoint(x: frame.midX, y: frame.midY)
addChild(playButton)
}
func loadGameScene() {
let scene = GameScene(...)
let transition = SKTransition....
scene.scaleMode = .aspectFill
view?.presentScene(scene, transition: transition)
}
}
You can also check out Apples sample game DemoBots for another button class example using protocols.
Hope this helps