Cocos2d/Gamecenter: How to implement correctly GameCenter into Cocos2d

Hi,

How's it going there?

Here's a tutorial that i saw loads of people having the same problem and after some research  I figured it out.

I don't know if it's the ideal way, but as it worked I can suit you.

Cocos2D: 1.0.1

What was the problem that it wouldn't work?

R: For some reason the RootViewController wasn't referenced and so it gave me a 12h delay on the project.

Step 1:

Go to you AppDelegate.h

#import <UIKit/UIKit.h>

@class RootViewController;

@interface AppDelegate : NSObject <UIApplicationDelegate> {

UIWindow *window;

RootViewController *viewController;

}

@property (nonatomic, retain) UIWindow *window;

@property (nonatomic, retain) RootViewController *viewController;

@end

Step 2:

Go to your AppDelegate.m

#import "cocos2d.h"

#import "AppDelegate.h"

#import "RootViewController.h"

@implementation AppDelegate

@synthesize window;

@synthesize viewController;

- (void) applicationDidFinishLaunching:(UIApplication*)application

{

// Init the window

window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    window.rootViewController = viewController;

//blablablá

// Init the View Controller

viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];

viewController.wantsFullScreenLayout = YES;

}

Step 3:

Import GameKit.framework

Step 4:

Implement some code.

I'm going to put only some basic stuff and of course the most important the leaderboard.

-(void)localUserAuthentication{

    

    GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];

    [localPlayer authenticateWithCompletionHandler:^(NSError *error) {

        if (!error){

            isLocalUserAuthenticated = YES;

            //NSLog(@"AUTHETICATION SUCCEDED");

        } else {

            isLocalUserAuthenticated = NO;

            //NSLog(@"AUTHETICATION FAILED");

        }

    }];

}

-(void)showLeaderboard{

    

    

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

    if (leaderboardController != NULL) {

        leaderboardController.category = @"com.yourcompany.gamename.leaderboard.whatleaderboard"; 

        leaderboardController.timeScope =GKLeaderboardTimeScopeAllTime;

        leaderboardController.leaderboardDelegate = self; 

        AppDelegate *delegate = [UIApplication sharedApplication].delegate; 

        [delegate.viewController presentModalViewController:leaderboardController animated:YES];

    }

    

    leaderboardController.toolbar.autoresizesSubviews = YES;

    leaderboardController.view.bounds = CGRectMake(0, 0, 480, 320);

    leaderboardController.view.transform = CGAffineTransformMakeRotation(CC_DEGREES_TO_RADIANS(90));

}

-(void)leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController{

    CCMenu* gamemenu = (CCMenu*)[self getChildByTag:kGameMenu];

    gamemenu.isTouchEnabled = YES;

    [self show];

    

    AppDelegate *delegate = [UIApplication sharedApplication].delegate; 

    [delegate.viewController dismissModalViewControllerAnimated:YES];

}

Well, so that's that.
If you guys need any help, just get in contact.
Hasta luego.