For showing scores and buttons for the game, we will add 2D SpriteKit layer. For adding the overlay, create a class called OverlaySKscene. In this class, add the following:
import SpriteKit
class OverlaySKScene: SKScene {
let _gameScene: GameSCNScene!
let myLabel: SKLabelNode!
var gameOverLabel: SKLabelNode!
var jumpBtn: SKSpriteNode!
var playBtn: SKSpriteNode!
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
init(size: CGSize, gameScene: GameSCNScene){
super.init(size: size)
}
}To import SpriteKit we will have to create a subclass of SpriteKit. Create global variables of type GameSCNScene, SKLabelNodes, and SpriteNodes. Here we create two LabelNodes: one for displaying score and the other to show "game over" text. We also create two spriteNodes: one for the play button and the other for the jump button.
We add the required init function and the default...