Swift : Background Color fading animation (SpriteKit)

Question

I\'m creating a game, the background color is white to begin with hence:

self.backgroundColor = SKColor.whiteColor()

So when the game initi

Answer 1

To smoothly transition from the current background color to a different color, use the colorizeWithColor SKAction. Here's an example...

runAction(SKAction.colorizeWithColor(SKColor.purpleColor(), colorBlendFactor: 1.0, duration: 2.0))

Answer 2

You have to add your if statements to override func update(currentTime: NSTimeInterval) (this method gets called every frame).

Also, I'd suggest you remove the () after the if statement as they are redundant, the same goes with the self before backgroundColor.

Answer 3

Put this code in your viewDidLoad method and see if it is what you are looking for

    self.view.backgroundColor = UIColor.blueColor()
    UIView.animateWithDuration(1.0, delay: 1.0, options: nil, animations: { () -> Void in
        self.view.backgroundColor = UIColor.greenColor()
    }, completion: nil)

If this is what you are looking for do something like

    if (score < 100){
        enemy.runAction(SKAction.moveTo(mainBall.position, duration:3))  
    }
    else if (score >= 100 && score < 200){
        enemy.runAction(SKAction.moveTo(mainBall.position, duration:2.5))
        UIView.animateWithDuration(0.5, animations: { () -> Void in
           self.backgroundColor = SKColor.purpleColor()
       })
    }
    else if (score >= 200 && score < 300){
        enemy.runAction(SKAction.moveTo(mainBall.position, duration:2))
         UIView.animateWithDuration(0.5, animations: { () -> Void in
           self.backgroundColor = SKColor.greenColor()
    })
    }`