Why doesn't this function get called? - xcode

Question

Im following the Ray Wenderlich tutorial and converted most of the code to Swift. Im on part two but this function never gets called. I followed the tutoral but im not sure where to call it. I dont think its a delegate function also so I know that im supposed to call it somewhere but not sure where. Has anyone ever tried this tutorial and got it to work on Swift? Thanks!
Heres the link: http://www.raywenderlich.com/60998/game-center-tutorial-how-to-make-a-simple-multiplayer-game-with-sprite-kit-part-2
func match(theMatch: GKMatch, didReceiveData data: NSData, fromPlayer playerID: String) {
let message = UnsafePointer<Message>(data.bytes).memory
if(message.messageType == MessageType.kMessageTypeRandomNumber) {
let messageRandomNumber = UnsafePointer<MessageRandomNumber>(data.bytes).memory
println("Received random number: \(messageRandomNumber.randomNumber)")
var tie = false
if(messageRandomNumber.randomNumber == _ourRandomNumber) {
println("Tie")
tie = true
_ourRandomNumber = arc4random()
self.sendRandomNumber()
}
else {
var dictionary = ["\(playerIDKey)":"\(playerID)", "\(randomNumberKey)":"\(messageRandomNumber.randomNumber)"]
self.processReceivedRandomNumber(dictionary)
}
if(_receivedAllRandomNumbers) {
_isPlayer1 = self.isLocalPlayerPlayer1()
}
if(!tie && _receivedAllRandomNumbers) {
if(_gameState == GameState.kGameStateWaitingForRandomNumber) {
_gameState = GameState.kGameStateWaitingForStart
}
self.tryStartGame()
}
}
else if(message.messageType == MessageType.kMessageTypeGameBegin) {
println("Begin game message received")
_gameState = GameState.kGameStateActive
self.delegate?.setCurrentPlayerIndex(self.indexForLocalPlayer())
}
else if(message.messageType == MessageType.kMessageTypeMove) {
println("Move message received")
let messageMove = UnsafePointer<MessageMove>(data.bytes).memory
self.delegate?.movePlayerAtIndex(self.indexForPlayerWithId(playerIDKey))
}
else if(message.messageType == MessageType.kMessageTypeGameOver) {
println("Game over message received")
let messageGameOver = UnsafePointer<MessageGameOver>(data.bytes).memory
self.delegate?.gameOver(messageGameOver.player1Won)
}
}

Answer 1

The delegate method match:didReceiveData:fromPlayer: has been deprecated. Use match:didReceiveData:fromRemotePlayer: instead.
Make sure you set the delegate, doing something like:
func matchmakerViewController(viewController: GKMatchmakerViewController, didFindMatch match: GKMatch) {
theMatch = match
match.delegate = self
...
}
That is the viewController:didFindMatch delegate for GKMatchmakerViewControllerDelegate.
You need to delegate from both GKMatchmakerViewControllerDelegate and GKMatchDelegate.
Yeah, I know this is an old thread, but the OP hasn't had any success yet.

Answer 2

match:didReceiveData:fromPlayer: is a GKMatchDelegate optional method which will trigger when the match received data sent from the player.
So please don't try to call it directly. It will be called by GameKit when data is received from a player.
#protocol GKMatchDelegate <NSObject>
#optional
// The match received data sent from the player.
- (void)match:(GKMatch *)match didReceiveData:(NSData *)data fromRemotePlayer:(GKPlayer *)player NS_AVAILABLE(10_10, 8_0);
- (void)match:(GKMatch *)match didReceiveData:(NSData *)data fromPlayer:(NSString *)playerID NS_DEPRECATED(10_8, 10_10, 4_1, 8_0, "use match:didReceiveData:fromRemotePlayer:");
#end;
This also is declared in GameKitHelper.h class as a GameKitHelperDelegate
#protocol GameKitHelperDelegate
- (void)match:(GKMatch *)match didReceiveData:(NSData *)data
fromPlayer:(NSString *)playerID;
#end
This delegate method is calling from the below method when the match received data sent from the player
#pragma mark GKMatchDelegate
// The match received data sent from the player.
- (void)match:(GKMatch *)match didReceiveData:(NSData *)data fromPlayer:(NSString *)playerID {
if (_match != match) return;
[_delegate match:match didReceiveData:data fromPlayer:playerID];
}