swift ノードが表示されない

Nodeが表示されずに困っています。
どうすればいいのでしょうか？

//
//  GameScene.swift
//  flap
//
//  Created by tanabe koichiro on 2016/06/04.
//  Copyright (c) 2016年 APOMIC. All right<s reserved.
//

import SpriteKit


class GameScene: SKScene {
        var baseNode: SKNode!
 //キャラクター作成
    struct hunter{
        static let playerimage=["logo.png","A.png","fig53219_01.png","floor_brick.png"]
    }






    func player_setup(){
        var playertexture=[SKTexture]()

            for imageName in hunter.playerimage {
            let texture=SKTexture(imageNamed: imageName)
            texture.filteringMode = .Linear
            playertexture.append(texture)
        }
        let animation_wait=SKAction.animateWithTextures(playertexture,timePerFrame:0.3)
        let player_wait_animation=SKAction.repeatActionForever(animation_wait)
        let player=SKSpriteNode(texture: playertexture[0])
        player.position=CGPoint(x: self.frame.size.width * 0.35,y: self .
            frame.size.height * 0.6)
        player.runAction(player_wait_animation)
        baseNode.addChild(player)
    }


    func setupfound(){
      //fllor created
        let under=SKTexture(imageNamed: "floor_brick.png")
        under.filteringMode = .Nearest

        //image needed
        var f_need=2.0+(self.frame.size.width/under.size().width)

        //set floor
        let FLOOR_B=SKSpriteNode(texture: under)
        FLOOR_B.position=CGPoint(x:FLOOR_B.size.width,y: FLOOR_B.size.height)
        baseNode.addChild(FLOOR_B)





    }


    func setupbackground(){
        let background=SKTexture(imageNamed: "sky1.jpg")
        background.filteringMode = .Nearest



        //set floor
        let FLOOR_B=SKSpriteNode(texture: background)
        FLOOR_B.position=CGPoint(x:FLOOR_B.size.width,y: self.size.height)
        baseNode.addChild(FLOOR_B)



    }





override func didMoveToView(view: SKView){
baseNode=SKNode()
  self.addChild(baseNode)
  self.player_setup()

  self.setupbackground()

}

     override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
       /* Called when a touch begins */
        //let touch = touches.first
        // タップした座標を取得する
       //tapLocation = touch!.locationInView(self.view)
       //let move2=SKAction.moveTo((tapLocation),duration: 5)
       //scene.runAction(move2)





    }

    override func update(currentTime: CFTimeInterval) {
        /* Called before each frame is rendered */
    }
}

//
//  GameViewController.swift
//  flap
//
//  Created by tanabe koichiro on 2016/06/04.
//  Copyright (c) 2016年 APOMIC. All rights reserved.
//

import UIKit
import SpriteKit

class GameViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        //シーン
        let scene=GameScene()

        let view=self.view as! SKView
        view.showsFPS=true
        view.showsNodeCount=true
        view.ignoresSiblingOrder=true
scene.scaleMode = .AspectFill
scene.size=view.frame.size
        view.presentScene(scene)
           }

    override func shouldAutorotate() -> Bool {
        return true
    }

    override func supportedInterfaceOrientations() ->
        UIInterfaceOrientationMask {
        if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
            return .AllButUpsideDown
        } else {
            return .All
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Release any cached data, images, etc that aren't in use.
    }

    override func prefersStatusBarHidden() -> Bool {
        return true
    }
}