Simple iOS App Written in Swift Demonstrating How to Detect User Input (screen tap) and Move a Player Sprite

DetectInputMoveSprite.swift

// NOTE: This gist is comprised of two swift files, GameScene.swift and GameViewController.swift

//
//  GameScene.swift
//  HelloSpriteKit
//
//  Created by Christopher Pedersen on 7/8/18.
//  Copyright © 2018 Christopher Pedersen. All rights reserved.
//

import SpriteKit

class GameScene: SKScene {
    
    let backgroundNode = SKSpriteNode(imageNamed: "BlankSuperMarioBackground")
    let playerNode = SKSpriteNode(imageNamed: "MarioSprite")
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
    override init(size: CGSize) {
        super.init(size: size)
        
        backgroundNode.size.width = frame.size.width
        backgroundNode.size.height = frame.size.height
        backgroundNode.anchorPoint = CGPoint(x: 0.5, y: 0.0)
        backgroundNode.position = CGPoint(x: size.width / 2.0, y: 0.0)
        addChild(backgroundNode)
        
        playerNode.position = CGPoint(x: size.width / 4.0, y: 82.0)
        playerNode.size.width = playerNode.size.width / 8.0
        playerNode.size.height = playerNode.size.height / 8.0
        addChild(playerNode)
        
    }
    
    // the touchesBegan method is called whenever the screen is tapped
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        // move player sprite (mario) 25 pixels forward on the x-axis
        playerNode.position.x = playerNode.position.x + 25
        print("tap detected!")
    }
}



//
//  GameViewController.swift
//  HelloSpriteKit
//
//  Created by Christopher Pedersen on 7/8/18.
//  Copyright © 2018 Christopher Pedersen. All rights reserved.
//

import UIKit
import SpriteKit
import GameplayKit

class GameViewController: UIViewController {
    var scene: GameScene!
    
    override var prefersStatusBarHidden: Bool {
        return true
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 1. Configure the main view
        let skView = view as! SKView
        skView.showsFPS = true
        
        // 2. Create and configure our game scene
        scene = GameScene(size: skView.bounds.size)
        scene.scaleMode = .aspectFill
        
        // 3. Show the scene
        skView.presentScene(scene)
    }
}