cocos2d-x中添加gameCenter的一些总结

注意：在越狱手机上测试GameCenter，可能会出现 This game is not recongnized by Game Center. 此时请用没越狱手机测试

http://hi.baidu.com/qq5292485/blog/item/61c4e60e069c900a6159f374.html

1、cocos2d-x是基于c++代码，而apple提供的api是基于object-c，此时你需要先了解c++中如何调用object-c进行混合编程的，这个可以参考http://www.himigame.com/iphone-cocos2dx/743.html这篇文章，写的很详细，接着参考http://www.himigame.com/iphone-cocos2d/535.html接入gamecenter,但补充一点，就是在游戏中，当需要通过按钮直接显示出排行榜的时候，又该如何实现呢？

查了下苹果的官方文档找到了 哈哈，代码如下：（*前提该类必须要实现GKLeaderboardViewController<GKLeaderboardViewControllerDelegate>）

- (void) showLeaderboard

{

GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewController alloc] init];

if (leaderboardController != nil)

{

leaderboardController.leaderboardDelegate = self;

[self presentModalViewController: leaderboardController animated: YES];

}

}

当关闭的时候需要调用如下方法

- (void)leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController

{

[self dismissModalViewControllerAnimated:YES];

}

请注意在上面的showLeaderboard方法中 由于该类为UIViewController,所以直接再本身添加，如果需要添加到cocos2d-x中呢，可以改为

- (void) showLeaderboard

{

    tempVC=[[UIViewControlleralloc] init];

    GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewControlleralloc] init];

    if (leaderboardController != nil)

    {

        UIApplication* clientApp = [UIApplicationsharedApplication];

        UIWindow* topWindow = [clientApp keyWindow];

        if (!topWindow)

        {

            topWindow = [[clientApp windows] objectAtIndex:0];

        }

        [topWindow addSubview:tempVC.view];

        leaderboardController.leaderboardDelegate = self;

        [tempVCpresentModalViewController: leaderboardController animated: YES];

    }

}

-(void) leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController

{

    [tempVCdismissModalViewControllerAnimated:YES];//在iphone上需要设置为NO，才可以继续响应事件（笔者还没有找到其他解决办法）

    [tempVC.viewremoveFromSuperview]; //为了使排行榜关闭的时候，能够继续响应事件

}

下面给出官方对于显示成就的代码（将其转换到cocos2d-x跟上面是一样原理了）

- (void) showAchievements

{

GKAchievementViewController *achievements = [[GKAchievementViewController alloc] init];

if (achievements != nil)

{

achievements.achievementDelegate = self;

[self presentModalViewController: achievements animated: YES];

}

[achievements release];

}

- (void)achievementViewControllerDidFinish:(GKAchievementViewController *)viewController

{

[self dismissModalViewControllerAnimated:YES];

}