如何在游戏中心接受邀请 [英] How to accept an invitation in Game Center

问题描述

我正在尝试使用Game Center实现邀请，有一件事我不理解。好的，我已经从一台设备向另一台设备发送了邀请。然后我在接收器上有一个UIAlertView，询问我我想接受或拒绝邀请。当我接受它时，它会像这样处理：

I'm trying to implement invitations with Game Center and there's one thing that i don't understand. Ok, i've sent an invitation from one device to another. Then i have an UIAlertView on receiver which asks me i would like to accept or decline the invitation. when i accept it it is handled like this:

[GKMatchmaker sharedMatchmaker].inviteHandler = ^(GKInvite *acceptedInvite, NSArray *playersToInvite) 
                 {
                     // Insert application-specific code here to clean up any games in progress.
                     if (acceptedInvite)
                     {
                         GKMatchmakerViewController *mmvc = [[[GKMatchmakerViewController alloc] initWithInvite:acceptedInvite] autorelease];
                         mmvc.matchmakerDelegate = self;
                         [presentingViewController presentModalViewController:mmvc animated:YES];
                     }
                     else if (playersToInvite)
                     {
                         GKMatchRequest *request = [[[GKMatchRequest alloc] init] autorelease];
                         request.minPlayers = 2;
                         request.maxPlayers = 4;
                         request.playersToInvite = playersToInvite;

                         GKMatchmakerViewController *mmvc = [[[GKMatchmakerViewController alloc] initWithMatchRequest:request] autorelease];
                         mmvc.matchmakerDelegate = self;
                         [presentingViewController presentModalViewController:mmvc animated:YES];

                     }
                 };

嗯，这很好，但下一步是什么？发件人设备显然正在等待一些标准类型的响应，因为如果我点击立即播放，它也会显示警告，告诉我有一些邀请尚未回答。

Well, that's great, but what next? the sender device is obviously waiting for some standard type of response, cause it also shows an alert telling me that there's some invitations not answered yet if i tap "Play now".

那我如何接受邀请？我应该寄回什么样的数据（以及如何）？我究竟应该在接收器方面做些什么呢？点击接受后游戏是否应立即开始，或者我应首先关闭AlertView，然后点击立即播放？

So how do i accept an invitation? What kind of data (and how) should i send back? And what exactly should i do on the receiver's side? Should game start instantly after tapping "Accept" or i should dismiss the AlertView first and then tap "Play now"?

Ray Wenderlich的教程说我应该选择第二种方式，但是当解除警报并点击立即播放时，发现发送方设备仍在等待响应并且不知道我已经接受了邀请。如果我此时点击立即播放，那么，如上所述，它会显示一条警告，表示应用程序正在等待响应。所以，如果你曾经这样做，那么请解释我该怎么做。谢谢！

Ray Wenderlich's tutorial says that i should choose second way but when dismiss the alert and tap "Play now" it turns out the sender device is still waiting for response and is not aware that i have already accepted the invitation. if i tap "Play now" at this moment then, as i said above, it shows an alert which says that the application is waiting for the response. So if you've ever done that then please explain me what should i do. Thanks!

推荐答案

1. 我在游戏加载后立即注册邀请并拨打$ ​​b $ b收到邀请时委托


2. 因此，inviteReceived会调用匹配制作者来解雇游戏
   中心控制器并创建匹配


3. 最后，当找到匹配时，方法
   connectionStatusChanged负责呈现所有游戏的
   视图和玩家和东西

以下是代码：

我在加载游戏后立即注册邀请，并在收到邀请时致电代表：

I register for invites as soon as the game is loaded and call the delegate when an invite is received:

- (void)registerInvites {
    [GKMatchmaker sharedMatchmaker].inviteHandler = ^(GKInvite *acceptedInvite, NSArray *playersToInvite) {
        self.pendingInvite = acceptedInvite;
        self.pendingPlayersToInvite = playersToInvite;
        [delegate inviteReceived];
    };
}

所以inviteReceived会调用匹配器来解雇游戏中心控制器并创建匹配：

So inviteReceived calls the match maker for dismissing the game center controller and creating the match:

- (void)inviteReceived {
    [[GCMultiplayerHelper sharedInstance] findMatchWithMinPlayers:2 maxPlayers:2 viewController:(UIViewController*)[self.superview nextResponder] delegate:self];
}


- (void)findMatchWithMinPlayers:(int)minPlayers maxPlayers:(int)maxPlayers viewController:(UIViewController *)viewController delegate:(id<GCMultiplayerHelperDelegate>)theDelegate {
    if (!gameCenterAvailable) return;

    matchStarted = NO;
    self.match = nil;
    self.presentingViewController = viewController;
    delegate = theDelegate;

    [presentingViewController dismissModalViewControllerAnimated:YES];
    GKMatchmakerViewController *mmvc;

    if (pendingInvite != nil) {

        mmvc = [[[GKMatchmakerViewController alloc] initWithInvite:pendingInvite] autorelease];

    } else {

        GKMatchRequest *request = [[[GKMatchRequest alloc] init] autorelease]; 
        request.minPlayers = minPlayers;     
        request.maxPlayers = maxPlayers;
        request.playersToInvite = pendingPlayersToInvite;

        mmvc = [[[GKMatchmakerViewController alloc] initWithMatchRequest:request] autorelease];    

    }

    mmvc.matchmakerDelegate = self;
    [presentingViewController presentModalViewController:mmvc animated:YES];

    self.pendingInvite = nil;
    self.pendingPlayersToInvite = nil;
}

最后，当找到匹配项时，connectionStatusChanged方法负责展示所有游戏的视图，玩家并开始比赛：

And finally, when the match is been found, the method connectionStatusChanged takes care of presenting all the game's views, players and starting the match:

- (void)matchmakerViewController:(GKMatchmakerViewController *)viewController didFindMatch:(GKMatch *)theMatch
{
    self.match = theMatch;
    match.delegate = self;
    if (!matchStarted && match.expectedPlayerCount == 0) {
        NSLog(@"Ready to start match! - didFindMatch");
        [presentingViewController dismissModalViewControllerAnimated:YES];

        [self.delegate connectionStatusChanged:CONNECTIONSUCCESS];
    }
}

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