I am having some extreme difficulties calling the achievements screen in game center. I have already set up the achievements in iTunes connect and it pops up fine if I access the achievements screen through the leaderboard first. However; I would like to be able to press a specific achievement button and be directed directly to the achievements screen. Can any one help? I have searched high and low on the internet ( and read through all of the documentation). I have found many resources for implementing leaderboards, but not many resources for implementing achievements in swift. My code is below. Any suggestions for my last two functions?
override func viewDidLoad() {
super.viewDidLoad()
login()
}
func login() {
println("Game Center Login Called")
let localPlayer = GKLocalPlayer.localPlayer()
// Handle the authentication
localPlayer.authenticateHandler = {(Home: UIViewController!, error: NSError!) -> Void in
if Home != nil {
println("Authentication is being processed.")
self.presentViewController(Home, animated: true, completion: nil)
} else {
println("Player has been successfully authenticated.")
}
}
}
func showLeaderboard() {
let gkScore = GKScore(leaderboardIdentifier: "high_Score_Leader_Board")
gkScore.value = Int64(highscore)
GKScore.reportScores([gkScore], withCompletionHandler: ( { (error: NSError!) -> Void in
if (error != nil) {
// handle error
println("Error: " + error.localizedDescription);
} else {
println("Score reported: \(gkScore.value)")
}
}))
var gcViewController: GKGameCenterViewController = GKGameCenterViewController()
gcViewController.gameCenterDelegate = self
gcViewController.viewState = GKGameCenterViewControllerState.Leaderboards
gcViewController.leaderboardIdentifier = "high_Score_Leader_Board"
self.showViewController(gcViewController, sender: self)
self.presentViewController(gcViewController, animated: true, completion: nil)
}
#IBAction func gameCenterButtoPressed(sender: AnyObject) {
showLeaderboard()
}
func gameCenterViewControllerDidFinish(gcViewController: GKGameCenterViewController!)
{
self.dismissViewControllerAnimated(true, completion: nil)
}
func showAchievements() {
// show Achievements screen
}
#IBAction func achievementButtonPressed(sender: AnyObject) {
// Call show achievements function when button pressed
}
Instead of:
gcViewController.viewState = GKGameCenterViewControllerState.Leaderboards
I think what you'll want is:
gcViewController.viewState = GKGameCenterViewControllerState.Achievements
And I found this information in this related tutorial.
Related
I am trying to receive notifications from the remote command center for when the play/pause button is tapped so that I can appropriately update the image for my play/pause button. However, I am not receiving the notification of when the playcommand/pausecommand is pressed (ie. when it should print "tapped play" or "tapped pause"). This is my first time using this library, and so I followed Apples docs and it says to implement a music controller using either a applicationMusicPlayer or applicationQueuePlayer to receive these events, but so far I am not able to. I don't know if there is anything else I need to do besides just setting it up as a applicationQueuePlayer.
Here is my code for a very plain music player controller that produces this situation:
let musicPlayer = MPMusicPlayerController.applicationQueuePlayer
override func viewDidLoad() {
super.viewDidLoad()
setupRemoteControl()
musicPlayer.setQueue(with: .songs())
}
func setupRemoteControl() {
UIApplication.shared.beginReceivingRemoteControlEvents()
let commandCenter = MPRemoteCommandCenter.shared()
commandCenter.playCommand.isEnabled = true
commandCenter.playCommand.addTarget { (_) -> MPRemoteCommandHandlerStatus in
print("tapped play")
return .success
}
commandCenter.pauseCommand.isEnabled = true
commandCenter.pauseCommand.addTarget {(_) -> MPRemoteCommandHandlerStatus in
print("tapped pause")
return .success
}
#IBAction func selectSongs(_ sender: UIButton) {
let controller = MPMediaPickerController(mediaTypes: .music)
controller.allowsPickingMultipleItems = true
controller.popoverPresentationController?.sourceView = sender
controller.delegate = self
present(controller, animated: true, completion: nil)
}
func mediaPicker(_ mediaPicker: MPMediaPickerController, didPickMediaItems mediaItemCollection: MPMediaItemCollection) {
musicPlayer.setQueue(with: mediaItemCollection)
mediaPicker.dismiss(animated: true, completion: nil)
musicPlayer.play()
}
I'm trying to learn how to build a Game-Center based app. its a turn based extremely simple game that just basically logs what button you press and sends it to he other player. I am having a very hard time implementing all the game center features since Apple's documentation has not been updated for Swift. I've been guessing at everything and reading off Objective-C examples and hoping for the best (somehow I've managed to get a few things going, altough I'm not sure if they are correct)
Anyways, I made a new iCloud account for my Simulator and ran the app on my phone and the simulator simultaneously, trying to get them to match up in a game. However I always get a "match request is invalid" error:
EDIT I have registered the app in iTunesConnect, I've implemented leaderboards and tested them and they work (So I assume the iTunesConnect thing is properly working and set-up)
#IBAction func startTapped(_ sender: Any) {
let request = GKMatchRequest()
request.maxPlayers = 2
request.minPlayers = 1
let mmvc = GKMatchmakerViewController(matchRequest: request)
mmvc?.matchmakerDelegate = self
present(mmvc!, animated: true, completion: nil)
}
extension HomeVC: GKGameCenterControllerDelegate
{
func authenticatePlayer()
{
//CALLED ON VIEWDIDAPPEAR
let localPlayer = GKLocalPlayer.localPlayer()
localPlayer.authenticateHandler = {
(view, error) in
if view != nil
{
self.present(view!, animated: true, completion: nil)
} else {
print("AUTHENTICATED!")
print(GKLocalPlayer.localPlayer().isAuthenticated)
}
}
}
func gameCenterViewControllerDidFinish(_ gameCenterViewController: GKGameCenterViewController) {
gameCenterViewController.dismiss(animated: true, completion: nil)
}
}
Here's the matchmaking code. Note I can get the Game Center screen to appear and tell me "how many players" and that its missing a player and gives the choice to invite friends and all that
extension HomeVC: GKMatchmakerViewControllerDelegate {
func matchmakerViewControllerWasCancelled(_ viewController: GKMatchmakerViewController) {
print("match was cancelled")
viewController.dismiss(animated: true, completion: nil)
}
func matchmakerViewController(_ viewController: GKMatchmakerViewController, didFailWithError error: Error) {
print("didFailwithError: \(error.localizedDescription)")
}
func matchmakerViewController(_ viewController: GKMatchmakerViewController, didFind match: GKMatch) {
print("Match found, ID: \(match.description)")
let gameScreenVC = self.storyboard?.instantiateViewController(withIdentifier: "mainGame") as! ViewController
gameScreenVC.providesPresentationContextTransitionStyle = true
gameScreenVC.definesPresentationContext = true
gameScreenVC.modalPresentationStyle = UIModalPresentationStyle.fullScreen
gameScreenVC.modalTransitionStyle = UIModalTransitionStyle.crossDissolve
match.delegate = gameScreenVC
self.present(gameScreenVC, animated: true, completion: nil)
}
}
If anyone is having this issue I fixed it by just replacing the "minelayers and max-layers" with the same amount, so the code now looks like this:
#IBAction func startTapped(_ sender: Any) {
let request = GKMatchRequest()
request.maxPlayers = 2 //min and max should be the same
request.minPlayers = 2 //apparently they need to be the same
let mmvc = GKMatchmakerViewController(matchRequest: request)
mmvc?.matchmakerDelegate = self
present(mmvc!, animated: true, completion: nil)
}
apparently Game Center does not like a min.player count of 1, its invalid. but thats how I got it to stop giving me Invalid Match Request warnings
I did everything right regarding itunes connect, but when I start the app it doesn't authenticate, and when I press my Gamecenter button it gives me a message "Gamecenter is not available, user not signed in"
Code:
ViewController:
import UIKit
import SpriteKit
import GameKit
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
authenticateLocalPlayer()
}
//initiate gamecenter
func authenticateLocalPlayer(){
print("Starting..1")
let localPlayer = GKLocalPlayer.localPlayer()
print("Starting..2")
localPlayer.authenticateHandler = {(viewController, error) -> Void in
print("Starting..3")
if (viewController != nil) {
print("Not signed in. Authenticating now")
var vc = self.view?.window?.rootViewController
vc?.presentViewController(viewController!, animated: true, completion: nil)
}
else {
print((GKLocalPlayer.localPlayer().authenticated))
}
}
}
GameScene:
import SpriteKit
import iAd
import GameKit
class GameScene: SKScene, SKPhysicsContactDelegate, ADBannerViewDelegate, GKGameCenterControllerDelegate {
func saveHighscore(score:Int) {
//check if user is signed in
if GKLocalPlayer.localPlayer().authenticated {
let scoreReporter = GKScore(leaderboardIdentifier: "CC_Leaderboard_1") //leaderboard id here
scoreReporter.value = Int64(score) //score variable here (same as above)
let scoreArray: [GKScore] = [scoreReporter]
GKScore.reportScores(scoreArray, withCompletionHandler: {(error : NSError?) -> Void in
if error != nil {
print("error") }
})
}
}
//shows leaderboard screen
func showLeader() {
var vc = self.view?.window?.rootViewController
var gc = GKGameCenterViewController()
gc.gameCenterDelegate = self
vc?.presentViewController(gc, animated: true, completion: nil)
}
//hides leaderboard screen
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController!)
{
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}
}
I also tried authenticating inside GameScene but that didn't work either.
Edit:
//initiate gamecenter
func authenticateLocalPlayer(){
print("Gamecenter..1")
let localPlayer = GKLocalPlayer.localPlayer()
print("Gamecenter..2")
localPlayer.authenticateHandler = {(viewController, error) -> Void in
print("Gamecenter..3")
if (viewController != nil) {
print("Not signed in. Authenticating now")
var vc = self.view?.window?.rootViewController
vc?.presentViewController(viewController!, animated: true, completion: nil)
}
else {
print((GKLocalPlayer.localPlayer().authenticated))
}
}
}
Take a look at the print statements at the function above, "Gamecenter..3" never get printed.
Edit 2:
The problem solved itself when I signed out of Gamecenter. (How stupid this kind of stuff)
One possibility: In your authentication handler, you never check the error code. You only check if the viewController is set or not. If the error code is set, though, the viewController will (usually) be nil, so you could be interpreting a login error as a successful login.
I would change the code to:
localPlayer.authenticateHandler = {(viewController, error) -> Void in
if (error != nil)
{
//add some stuff to report the error
}
else if (viewController != nil){
print("Not signed in. Authenticating now")
var vc = self.view?.window?.rootViewController
vc?.presentViewController(viewController!, animated: true, completion: nil)
}
else {
print((GKLocalPlayer.localPlayer().authenticated))
}
}
to confirm you're not getting an error on login. If you are getting an error, that will provide a clue as to what to look at next.
Edit
Some folks are reporting authentication problems until they add at least 1 leaderboard or achievement in iTunesConnect. In those reports, they're actually getting a login error that the game isn't recognized. But, given the inherent flakiness in game center, I would add a placeholder achievement or leaderboard to rule that issue out. (iOS9 “This game is not recognized by game center.”)
I recently tried to add Game Center to my Sprite Kit Game, but it's not working properly.
When the game starts in the simulator, the Game Center login page does show up. When I start the game on my phone it does not. Can someone tell me what I am doing wrong.
//GameViewController.Swift
import GameKit
class GameViewController: UIViewController, ADBannerViewDelegate, GKGameCenterControllerDelegate {
var bannerView:ADBannerView?
override func viewDidLoad() {
super.viewDidLoad()
// Presenting scene without using GameScene.sks
let skView = view as! SKView
let myScene = GameScene(size: skView.frame.size)
myScene.scaleMode = .ResizeFill
skView.presentScene(myScene)
authenticateLocalPlayer()
}
//initiate gamecenter
func authenticateLocalPlayer(){
var localPlayer = GKLocalPlayer.localPlayer()
localPlayer.authenticateHandler = {(viewController, error) -> Void in
if (viewController != nil) {
self.presentViewController(viewController, animated: true, completion: nil)
}
else {
println((GKLocalPlayer.localPlayer().authenticated))
}
}
}
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController!)
{
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}
//GameScene.Swift
import GameKit
class GameScene: SKScene, SKPhysicsContactDelegate{
var playerScore = 0
func playerScoreUpdate() {
playerScorelabel.text = "\(playerScore)"
}
func saveHighScore(high:Int) {
NSUserDefaults.standardUserDefaults().setInteger(high, forKey: "highscore")
//check if user is signed in
if GKLocalPlayer.localPlayer().authenticated {
var scoreReporter = GKScore(leaderboardIdentifier: "TF1G002ID") //leaderboard id here
scoreReporter.value = Int64(playerScore) //score variable here (same as above)
var scoreArray: [GKScore] = [scoreReporter]
GKScore.reportScores(scoreArray, withCompletionHandler: {(error : NSError!) -> Void in
if error != nil {
println("error")
}
})
}
}
//GameOver.Swift
import GameKit
class GameOverScene: SKScene, GKGameCenterControllerDelegate {
//shows leaderboard screen
func showLeader() {
var vc = self.view?.window?.rootViewController
var gc = GKGameCenterViewController()
gc.gameCenterDelegate = self
vc?.presentViewController(gc, animated: true, completion: nil)
}
// Press Finger
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
for touch: AnyObject in touches {
let location = touch.locationInNode(self)
let node = self.nodeAtPoint(location)
if node.name == "replay" {
playSound(sound)
}
if node.name == "leaderboard" {
showLeader()
}
}
}
//hides leaderboard screen
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController!)
{
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}
Did you import the GameKit framework into your app?
Go to your project -> General -> scroll until you see linked frameworks -> click the plus sign -> add GameKit framework by searching
I have used the code below to create my GameCenter page in my app. However, I haven't been able to connect the leaderboard that I created on iTunes Connect to my code, so the app just produces a blank leaderboard page. How do I connect my Itunes Connect leaderboard to my code, and how do I make the app such that it places your score on the leaderboard, as right now the leaderboard is empty.
Here is the code I used:
override func viewDidAppear(animated: Bool) {
//check user is logged into GameCenter
var localPlayer = GKLocalPlayer.localPlayer()
localPlayer.authenticateHandler = {(viewController : UIViewController!, error : NSError!) -> Void in
if ((viewController) != nil) {
self.presentViewController(viewController, animated: true, completion: nil)
} else {
println((GKLocalPlayer.localPlayer().authenticated))
}
}
//display leaderboard
func showLeaderboard() {
var gcViewController: GKGameCenterViewController = GKGameCenterViewController()
gcViewController.gameCenterDelegate = self
gcViewController.viewState = GKGameCenterViewControllerState.Leaderboards
gcViewController.leaderboardIdentifier = "MyLeaderboard"
self.showViewController(gcViewController, sender: self)
self.navigationController?.pushViewController(gcViewController, animated: true)
}
//take leaderboard away
func gameCenterViewControllerDidFinish(gcViewController: GKGameCenterViewController!) {
self.dismissViewControllerAnimated(true, completion: nil)
}
How do I connect my Itunes Connect leaderboard to the app, and what code do I use to upload one's score to the leaderboard?
Firstly add the GKGameCenterControllerDelegate to your class:
class viewController: UIViewController, GKGameCenterControllerDelegate {
...
}
This is the code you need to use to authenticate the player:
func login() {
println("Game Center Login Called")
let localPlayer = GKLocalPlayer.localPlayer()
// Handle the authentication
localPlayer.authenticateHandler = {(Home: UIViewController!, error: NSError!) -> Void in
if Home != nil {
println("Authentication is being processed.")
self.presentViewController(Home, animated: true, completion: nil)
} else {
println("Player has been successfully authenticated.")
}
}
}
This is the code you should use to show up the leaderboard:
func showLeaderboard() {
var gcViewController: GKGameCenterViewController = GKGameCenterViewController()
gcViewController.gameCenterDelegate = self
gcViewController.viewState = GKGameCenterViewControllerState.Leaderboards
gcViewController.leaderboardIdentifier = "YOUR_LEADERBOARD_ID"
self.showViewController(gcViewController, sender: self)
self.presentViewController(gcViewController, animated: true, completion: nil)
}
This code is needed when the user taps on "Done".
func gameCenterViewControllerDidFinish(gcViewController: GKGameCenterViewController!)
{
self.dismissViewControllerAnimated(true, completion: nil)
}
You can call the authentication method login() in the viewDidLoad method:
override func viewDidLoad() {
super.viewDidLoad()
login()
...
}
Show up the leaderboard when the user taps on a button
#IBAction func button(sender: AnyObject) {
showLeaderboard()
}
If you want to submit the best score:
if GKLocalPlayer.localPlayer().authenticated {
println("I have submitted the score to Game Center")
let gkScore = GKScore(leaderboardIdentifier: "Best_Score")
gkScore.value = Int64(bestScore)
GKScore.reportScores([gkScore], withCompletionHandler: ( { (error: NSError!) -> Void in
if (error != nil) {
// handle error
println("Error: " + error.localizedDescription);
} else {
println("Score reported: \(gkScore.value)")
}
}))
}