Swift

GameScene.swift

import SpriteKit
import GameplayKit

class GameScene: SKScene {

    var char:SKSpriteNode?;
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        setup()
    }

    override init() {
        super.init();
        setup();
    }
    
    override init(size: CGSize) {
        super.init(size: size);
        setup()
    }
    
    func setup() {
        self.char = SKSpriteNode(imageNamed: "zombie")
    }
    
    
    override func didMove(to view: SKView) {
        
        view.scene?.addChild(self.char);