Game center Authentication not working - swift

Question

My Game Center Authentication is not working. When I build and run, it won't show my username.. has signed in. Also, when I try to add my score I get a screen that says "no data availible". Heres my code.
override func viewDidLoad() {
super.viewDidLoad()
gcAuthPlayer()
}
#IBAction func GCButton(sender: AnyObject) {
saveHighScore(GameScene().highScoreNumer)
showLeaderBoard()
if GameScene().currentScore > GameScene().highScoreNumer{
saveHighScore(GameScene().currentScore)
}
}
func showLeaderBoard(){
let viewController = self.view.window?.rootViewController
let gcvc = GKGameCenterViewController()
gcvc.gameCenterDelegate = self
viewController?.presentViewController(gcvc, animated: true, completion: nil)
}
func saveHighScore(number: Int){
if GKLocalPlayer.localPlayer().authenticated{
let scoreReporter = GKScore(leaderboardIdentifier: "myleaderboard")
scoreReporter.value = Int64(number)
let scoreArray : [GKScore] = [scoreReporter]
GKScore.reportScores(scoreArray, withCompletionHandler: nil)
}
}
func gcAuthPlayer(){
let localPlayer = GKLocalPlayer.localPlayer()
localPlayer.authenticateHandler = {
(view, error) in
if view != nil{
self.presentViewController(view!, animated: true, completion: nil)
}else{
print(GKLocalPlayer.localPlayer().authenticated)
}
}
}
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController) {
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}

Answer 1

This code makes no sense
saveHighScore(GameScene().highScoreNumer)
showLeaderBoard()
if GameScene().currentScore > GameScene().highScoreNumer{
saveHighScor
You are creating a new instance of GameScene everytime you try to update the score and therefore your score is nil
I would need to see some more code but for now you need to change the score property in your game scene. For example make it a static property so you can get it in other classes.
class GameScene: SKScene {
static var currentScore = 0
static var highscoreNumber = 0
}
Than in your Scenes or ViewController you can get it like so
GameScene.currentScore = 5
GameScene.highscoreNumber = 5
Just remember that you have to reset the score to 0 everytime you restart your gameScene because it a static property.
GameScene.currentScore = 0
GameScene.highscoreNumber = 0
Than your code to post the score should look like this
saveHighScore(GameScene.highScoreNumer)
showLeaderBoard()
if GameScene.currentScore > GameScene.highScoreNumer{
saveHighScor
Your score reporting code should also handle the error and actually do the completion handler. So change it to something like this.
/// Save leaderboard progress
func reportLeaderboardProgress(value: Int, leaderboardID: String) {
let scoreReporter = GKScore(leaderboardIdentifier: leaderboardID)
scoreReporter.value = Int64(value)
GKScore.reportScores([scoreReporter]) { error in // Trailing Closure syntax
if let error = error {
print(error.localizedDescription)
return
}
print("Reported leaderboard progress \(value) to leaderboardID \(leaderboardID)")
}
}
It is also a good idea to move that code into another class to keep your overall code cleaner and more reusable.
For a nice and simple example check this helper on gitHub.
https://github.com/jackcook/GCHelper
Let me know how it goes.