Update MatchMakerHelper, added methods

GoldWars/GoldWars/MatchmakingHelper.swift

@@ -22,6 +22,8 @@ class MatchmakingHelper: NSObject, GKMatchmakerViewControllerDelegate, GKMatchDe
     var mpMatch: GKMatch? //represents network
     var viewController: UIViewController?
     var mpMatchStarted: Bool
+    var isServer: Bool
+    var serverPlayer: GKPlayer?
     let localPlayer: GKLocalPlayer = GKLocalPlayer.local
     
     static let sharedInstance = MatchmakingHelper()
@@ -33,27 +35,24 @@ class MatchmakingHelper: NSObject, GKMatchmakerViewControllerDelegate, GKMatchDe
     
     override init() {
         mpMatchStarted = false
+        isServer = false
         super.init()
     }
     
     func presentMatchmaker() {
-      // 1
         guard GKLocalPlayer.local.isAuthenticated else {
             print("Player ist nicht authentifiziert")
             return
         }
-      
-      // 2
         let request = GKMatchRequest()
         
         request.minPlayers = 2
         request.maxPlayers = 2
-      // 3
         request.inviteMessage = "Willst du GoldWars spielen?"
         
-      // 4
-        let vc = GKMatchmakerViewController.init(matchRequest: request)
-      viewController?.present(vc!, animated: true, completion: nil)
+        let matchmakerVC = GKMatchmakerViewController.init(matchRequest: request)
+        matchmakerVC!.matchmakerDelegate = self
+        viewController?.present(matchmakerVC!, animated: true, completion: nil)
     }
     
     func findMatchWithMinPlayers(minPlayers: Int, maxPlayers: Int, viewController: UIViewController, delegate: GameKitHelperDelegate){
@@ -94,9 +93,11 @@ class MatchmakingHelper: NSObject, GKMatchmakerViewControllerDelegate, GKMatchDe
         //expectedPlayerCount : The remaining number of players who have not yet connected to the match
         if !mpMatchStarted && match.expectedPlayerCount == 0 {
             print("Bereit das Spiel zu starten!")
-            //startMatch()
+            startMatch()
         }
     }
+    
+    // The match received data sent from the player.
     private func match(match: GKMatch!, didReceiveData data: NSData!,fromPlayer playerID: String!) {
         if mpMatch != match { return }
         delegate?.matchReceivedData(match: match, data: data, fromPlayer:
@@ -111,7 +112,49 @@ class MatchmakingHelper: NSObject, GKMatchmakerViewControllerDelegate, GKMatchDe
         delegate?.matchEnded()
     }
     
-    func startMatch(){
+    // The player state changed (eg. connected or disconnected)
+    func match(_ match: GKMatch, player: GKPlayer, didChange state: GKPlayerConnectionState) {
+        if mpMatch != match {
+            return
+        }
+    
+        switch (state) {
+            case GKPlayerConnectionState.connected:
+                print("Player connected!")
+    
+                if (!mpMatchStarted && match.expectedPlayerCount == 0) {
+                    print("Ready to start match!")
+                    startMatch()
+                }
+        case GKPlayerConnectionState.disconnected:
+                print("Player disconnected!")
+                mpMatchStarted = false
+                delegate!.matchEnded()
+        default:
+                print("Player unknown status!")
+        }
+    }
+    
+    func startMatch() {
+        mpMatch!.chooseBestHostingPlayer(completionHandler: {
+            (player) in
+            self.mpMatchStarted = true
+            if player == GKLocalPlayer.local {
+                print("I am the server")
+                self.isServer = true
+            } else {
+                print("I am a client")
+                self.isServer = false
+                self.serverPlayer = player
                 
             }
+            self.delegate!.matchStarted()
+        })
+    }
+    
+    func disconnect() {
+        if mpMatch != nil {
+            mpMatch?.disconnect()
+        }
+    }
 }

GoldWars/GoldWars/Scenes/MenuScene.swift

@@ -22,7 +22,7 @@ class MenuScene: SKScene {
                                  position: CGPoint(x: midX, y: midY),
                                  onButtonPress: {
                                     MatchmakingHelper.sharedInstance.presentMatchmaker()
-                                  //  self.loadScene(scene: GameScene(size: self.size))
+                                    self.loadScene(scene: GameScene(size: self.size))
                                     
                                  }))
         entityManager.add(Button(name: "settingsButton",