SKLabel won't show up - swift

Question

Im making a flappy bird type game in swift using sprite kit. The game works fine but I'm trying to make a way to score the game so I set up a variable and SKLabel that adds on to itself whenever a pipe is about half way across the screen. However I cannot get the label to show up any help doing this here is my code:
// flappy rainbow sheep
//
// Created by Heather Arnold on 3/3/15.
// Copyright (c) 2015 ian arnold. All rights reserved.
//
import SpriteKit
class GameScene: SKScene {
var bird = SKSpriteNode()
var pipeUpTexture = SKTexture()
var pipeDownTexture = SKTexture()
var PipeMoveAndRemove = SKAction()
let pipeGap = 225.0
var score: Int = 0
var scoreLabel: SKLabelNode = SKLabelNode(fontNamed:"System-Bold")
override func didMoveToView(view: SKView) {
/* Setup your scene here */
score = 0
//Physics
self.physicsWorld.gravity = CGVectorMake(0.0, -10.0);
//Bird
var BirdTexture = SKTexture(imageNamed:"flappysheep")
BirdTexture.filteringMode = SKTextureFilteringMode.Nearest
bird = SKSpriteNode(texture: BirdTexture)
bird.setScale(0.5)
bird.position = CGPoint(x: self.frame.size.width * 0.35, y: self.frame.size.height * 0.6)
scoreLabel.position.x = 50
scoreLabel.position.y = view.bounds.height - 50
scoreLabel.text = "0"
scoreLabel.horizontalAlignmentMode = SKLabelHorizontalAlignmentMode.Left
scoreLabel.hidden = false
self.addChild(scoreLabel)
bird.physicsBody = SKPhysicsBody(circleOfRadius:bird.size.height/4.0);
bird.physicsBody?.dynamic = true
bird.physicsBody?.allowsRotation = false
self.addChild(bird)
//off screen
//Ground
var groundTexture = SKTexture(imageNamed:"rainbowobstacle")
var sprite = SKSpriteNode(texture: groundTexture)
sprite.setScale(2.0)
sprite.position = CGPointMake(self.size.width/2.0, sprite.size.height/2.0)
self.addChild(sprite)
var ground = SKNode()
ground.position = CGPointMake(0, groundTexture.size().height)
ground.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(self.frame.size.width, groundTexture.size().height * 2.0))
ground.physicsBody?.dynamic = false
self.addChild(ground)
//Pipes
//create the pipes
pipeUpTexture = SKTexture(imageNamed:"rainbowpipe")
pipeDownTexture = SKTexture(imageNamed:"rainbowpipe")
//move pipes
let distanceToMove = CGFloat(self.frame.size.width + 2.0 * pipeUpTexture.size().width)
let movePipes = SKAction.moveByX(-2500, y: 0.0, duration: NSTimeInterval(0.01 * distanceToMove))
let removePipes = SKAction.removeFromParent()
PipeMoveAndRemove = SKAction.sequence([movePipes, removePipes])
//spwan pipes
let spawn = SKAction.runBlock({() in self.spawnPipes()})
let delay = SKAction.waitForDuration(NSTimeInterval(0.2))
let spawnThenDelay = SKAction.sequence([spawn, delay])
let spawnThenDelayForever = SKAction.repeatActionForever(spawnThenDelay)
self.runAction(spawnThenDelayForever)
let pipeUp = SKSpriteNode(texture:pipeUpTexture)
if (pipeUp.position.x + (pipeUp.size.width / 2) < self.view!.bounds.size.width / 2)
{
score++
}
scoreLabel.hidden = false
}
func spawnPipes(){
let pipePair = SKNode()
pipePair.position = CGPointMake(self.frame.size.width + pipeUpTexture.size().width * 2, 0)
pipePair.zPosition = -10
let height = UInt32(self.frame.size.height / 4)
let y = arc4random() % height + height
let pipeDown = SKSpriteNode(texture:pipeDownTexture)
pipeDown.setScale(2.0)
pipeDown.position = CGPointMake(0.0, CGFloat(y) + pipeDown.size.height + CGFloat(pipeGap))
pipeDown.physicsBody = SKPhysicsBody(rectangleOfSize:pipeDown.size)
pipeDown.physicsBody?.dynamic = false
pipePair.addChild(pipeDown)
let pipeUp = SKSpriteNode(texture:pipeUpTexture)
pipeUp.setScale(2.0)
pipeUp.position = CGPointMake(0.0, CGFloat(y))
pipeUp.physicsBody = SKPhysicsBody(rectangleOfSize: pipeUp.size)
pipeUp.physicsBody?.dynamic = false
pipePair.addChild(pipeUp)
pipePair.runAction(PipeMoveAndRemove)
self.addChild(pipePair)
}
class GameScene: SKScene {
let bird = SKSpriteNode()
var gameOver = false
override init(size: CGSize) {
super.init(size: size)
self.bird.position = CGPoint(x: 0, y: 0)
self.addChild(self.bird)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func endGame(){
// restart the game
let gameScene = GameScene(size: self.size)
self.view!.presentScene(gameScene)
}
override func update(currentTime: NSTimeInterval) {
// our bird doesnt intersect the frame,
// we use gameOver bool so we dont call endGame more than once
if !self.frame.intersects(self.bird.frame) && !self.gameOver{
self.gameOver = true
self.endGame()
}
}
}
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
/* Called when a touch begins */
for touch: AnyObject in touches {
let location = touch.locationInNode(self)
bird.physicsBody?.velocity = CGVectorMake(0, 0)
bird.physicsBody?.applyImpulse(CGVectorMake(0, 8))
}
}
override func update(currentTime: CFTimeInterval) {
/* Called before each frame is rendered */
}
}

Answer 1

Your label might be covered over by another image. Try setting the SKLabelNode zPosition property to a higher value. Perhaps something like 900.

Answer 2

Try setting the zPosition of the label to one.
scoreLabel.zPosition = 1
This should make the node appear even if another node passes over it.
Here are two other functions that may assist you also:
scoreLabel.color = UIColor.blackColor()//set color to black - you can use any almost color here
scoreLabel.fontSize = 32//changes font size to make label bigger/smaller