我正在尝试使用自定义UI（没有GKMatchMakerViewController）实现实时多人游戏。我正在使用startBrowsingForNearbyPlayersWithReachableHandler：^（NSString * playerID，BOOL reachable）来查找本地播放器，然后使用GKMatchmaker单例（我已经发起）启动匹配请求。
这是我遇到麻烦的地方。当我发送请求时，完成处理程序几乎立即触发，没有错误，并且它返回的匹配具有预期的玩家计数为零。同时，其他玩家肯定没有回应请求
相关守则：
- (void) findMatch {
GKMatchRequest *request = [[GKMatchRequest alloc] init];
request.minPlayers = NUM_PLAYERS_PER_MATCH; //2
request.maxPlayers = NUM_PLAYERS_PER_MATCH; //2
if (nil != self.playersToInvite) {
// we always successfully get in this if-statement
request.playersToInvite = self.playersToInvite;
request.inviteeResponseHandler = ^(NSString *playerID, GKInviteeResponse response) {
[self.delegate updateUIForPlayer: playerID accepted: (response == GKInviteeResponseAccepted)];
};
}
request.inviteMessage = @"Let's Play!";
[self.matchmaker findMatchForRequest:request withCompletionHandler:^(GKMatch *match, NSError *error) {
if (error) {
// Print the error
NSLog(@"%@", error.localizedDescription);
} else
if (match != nil) {
self.currentMatch = match;
self.currentMatch.delegate = self;
// All players are connected
if (match.expectedPlayerCount == 0) {
// start match
[self startMatch];
}
[self stopLookingForPlayers];
}
}];
}
我从上一个问题（iOS Gamecenter Programmatic Matchmaking）知道我需要包含这个：
- (void)matchForInvite:(GKInvite *)invite completionHandler:(void (^)(GKMatch *match, NSError *error))completionHandler
在上面的代码中，但我不知道应该包括在哪里。我已经尝试了GKMatchRequest inviteeResponseHandler，并在matchmaker finMatchForRequest：withCompletionHandler中无济于事。发生的行为是匹配器立即返回匹配（甚至在被邀请者被邀请之前），即使被邀请者点击匹配邀请，也不会调用matchRequest inviteeResponseHandler。
有人可以就此提出建议吗？谢谢。
...吉姆
答案 0 :(得分：15)
今晚我的比赛正在进行中。为了获得通信通道设置，您需要进行更多的协商。返回给邀请者的初始匹配正在等待被邀请者回复...这是我的过程只有两个玩家。以下是我的通信启动所执行的所有步骤。显然，此处不包含真正的错误处理：
首先，验证您的播放器
第二，在认证设置inviteHandler之后。像这样：
[GKMatchmaker sharedMatchmaker].inviteHandler = ^(GKInvite* acceptedInvite, NSArray *playersToInvite)
{
if(acceptedInvite != nil)
{
// Get a match for the invite we obtained...
[[GKMatchmaker sharedMatchmaker] matchForInvite:acceptedInvite completionHandler:^(GKMatch *match, NSError *error)
{
if(match != nil)
{
[self disconnectMatch];
// Record the new match...
self.MM_gameCenterCurrentMatch = match;
self.MM_gameCenterCurrentMatch.delegate = self;
}
else if(error != nil)
{
NSLog(@"ERROR: From matchForInvite: %@", [error description]);
}
else
{
NSLog(@"ERROR: Unexpected return from matchForInvite...");
}
}];
}
};
第三，获取朋友playerIds（不是别名）的列表。
第四，设置这样的GKMatchRequest ......我只邀请一位朋友：
// Initialize the match request - Just targeting iOS 6 for now...
GKMatchRequest* request = [[GKMatchRequest alloc] init];
request.minPlayers = 2;
request.maxPlayers = 2;
request.playersToInvite = [NSArray arrayWithObject:player.playerID];
request.inviteMessage = @"Let's play!";
// This gets called when somebody accepts
request.inviteeResponseHandler = ^(NSString *playerID, GKInviteeResponse response)
{
if (response == GKInviteeResponseAccepted)
{
//NSLog(@"DEBUG: Player Accepted: %@", playerID);
// Tell the infrastructure we are don matching and will start using the match
[[GKMatchmaker sharedMatchmaker] finishMatchmakingForMatch:self.MM_gameCenterCurrentMatch];
}
};
第五，使用请求调用findMatchForRequest：withCompletionHandler：类似这样......
[[GKMatchmaker sharedMatchmaker] findMatchForRequest:request withCompletionHandler:^(GKMatch* match, NSError *error) {
if (error)
{
NSLog(@"ERROR: Error makeMatch: %@", [error description] );
[self disconnectMatch];
}
else if (match != nil)
{
// Record the new match and set me up as the delegate...
self.MM_gameCenterCurrentMatch = match;
self.MM_gameCenterCurrentMatch.delegate = self;
// There will be no players until the players accept...
}
}];
第六，这会将请求发送给其他玩家，如果他们接受第二步中的“inviteHandler”则会被调用。
第七步，第二步的“inviteHandler”获得了GKInvite的匹配！
第八，第四步的“inviteeResponseHandler”被调用完了比赛！
第九，从GKMatchDelegate创建一个didChangeState来处理匹配的最终化。像这样：
- (void)match:(GKMatch *)match player:(NSString *)playerID didChangeState:(GKPlayerConnectionState)state{
switch (state)
{
case GKPlayerStateConnected:
// Handle a new player connection.
break;
case GKPlayerStateDisconnected:
// A player just disconnected.
break;
}
if (!self.matchStarted && match.expectedPlayerCount == 0)
{
self.matchStarted = YES;
// Handle initial match negotiation.
if (self.iAmHost && !self.sentInitialResponse)
{
self.sentInitialResponse = true;
// Send a hello log entry
[self sendMessage: [NSString stringWithFormat:@"Message from friend, 'Hello, thanks for accepting, you have connected with %@'", self.MM_gameCenterLocalPlayer.alias] toPlayersInMatch: [NSArray arrayWithObject:playerID]];
}
}}
第十，这是我的sendMessage：
- (void) sendMessage:(NSString*)action toPlayersInMatch:(NSArray*) playerIds{
NSError* err = nil;
if (![self.MM_gameCenterCurrentMatch sendData:[action dataUsingEncoding:NSUTF8StringEncoding] toPlayers:playerIds withDataMode:GKMatchSendDataReliable error:&err])
{
if (err != nil)
{
NSLog(@"ERROR: Could not send action to players (%@): %@ (%d) - '%@'" ,[playersInMatch componentsJoinedByString:@","],[err localizedDescription],[err code], action);
}
else
{
NSLog(@"ERROR: Could not send action to players (%@): null error - '%@'",[playersInMatch componentsJoinedByString:@","], action);
}
}
else
{
NSLog(@"DEBUG: Message sent to players (%@) - '%@'",[playersInMatch componentsJoinedByString:@","], action);
}}
第十一，从GKMatchDelegate创建一个这样的didReceiveData：
- (void)match:(GKMatch *)match didReceiveData:(NSData *)data fromPlayer:(NSString *)playerID{
NSString* actionString = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease];
// Send the initial response after we got the initial send from the
// invitee...
if (!self.iAmHost &&!self.sentInitialResponse)
{
self.sentInitialResponse = true;
// Send a hello log entry
[self sendMessage: [NSString stringWithFormat:@"Message from friend, 'Hello, thanks for inviting, you have connected with %@'", self.MM_gameCenterLocalPlayer.alias] toPlayersInMatch: [NSArray arrayWithObject:playerID]];
}
// Execute the action we were sent...
NSLog(actionString);}
第十二......现在你已经建立并运行了沟通渠道......做你想做的任何事情......