How to set a high score in game with sprite kit and swift

Question

I made a simple game where you have to dodge obstacles and collect coins. Each coin will give you 1 point. While playing the game there is a score label. How can I create a

Answer 1

var playerScore = 0

func playerScoreUpdate() {
    let highScore = NSUserDefaults().integerForKey("highscore")
    if playerScore > highScore {
         NSUserDefaults().setInteger(playerScore, forKey: "highscore")
    }
    playerScorelabel.text = "Score: \(playerScore)"
}

playerScore = 200
playerScoreUpdate()
println( NSUserDefaults().integerForKey("highscore") )  // 200

playerScore = 180
playerScoreUpdate()
println( NSUserDefaults().integerForKey("highscore") )  // 200


playerScore = 250
playerScoreUpdate()
println( NSUserDefaults().integerForKey("highscore") )  // 250


highScoreLabel.text = "HighScore: " + NSUserDefaults().integerForKey("highscore").description