Cocos2D +故事板，實現Play Again功能並重新加載遊戲場景

Question

我在故事板項目中集成了Cocos2d遊戲。以下是故事板。當遊戲結束時（onExit方法），我發送通知到CocosViewController並從那裏執行一個繼續，這會打開ScoreViewController。這工作正常。此外，當用戶按下中的「再次播放」按鈕時，我想再次加載遊戲。

我嘗試了一個unwind segue，它打開了CocosViewController，但它沒有加載遊戲，它立即返回到ScoreViewController。如何實現Play Again功能？也許是賽格？

CocosViewController

-(void)setupCocos2d { 
    CCDirector *director = [CCDirector sharedDirector]; 
    //[[[self navigationController] navigationBar] setHidden:YES]; 


    if([director isViewLoaded] == NO) 
    { 
    // Create the OpenGL view that Cocos2D will render to. 
    CCGLView *glView = [CCGLView viewWithFrame:self.view.bounds 
            pixelFormat:kEAGLColorFormatRGB565 
            depthFormat:0 
          preserveBackbuffer:NO 
            sharegroup:nil 
           multiSampling:NO 
           numberOfSamples:0]; 

     // Assign the view to the director. 
     director.view = glView; 


     // Initialize other director settings. 
     [director setAnimationInterval:1.0f/60.0f]; 
     [director enableRetinaDisplay:YES]; 
    } 

    // Set the view controller as the director's delegate, so we can respond to certain events. 
    director.delegate = self; 

    // Add the director as a child view controller of this view controller. 
    [self addChildViewController:director]; 


    // Add the director's OpenGL view as a subview so we can see it. 
    [self.view addSubview:director.view]; 
    [self.view sendSubviewToBack:director.view]; 

    // Finish up our view controller containment responsibilities. 
    [director didMoveToParentViewController:self]; 

    // Run whatever scene we'd like to run here. 
    NSArray *parameters = [[NSArray alloc] initWithObjects:@"3", @"sound", @"countdown", nil]; 

    if(director.runningScene) 
     [director replaceScene:[IntroLayer sceneWithParameters:parameters]]; 
    else 
     [director pushScene:[IntroLayer sceneWithParameters:parameters]]; 

} 

-(void) viewDidAppear:(BOOL)animated{ 
    [super viewDidAppear:animated]; 

    [self setupCocos2d]; 
} 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(receiveNotificationFromGame:) name:@"GameEndedNotification" object:nil]; 
} 


-(void)receiveNotificationFromGame:(NSNotification *) notification 
{ 
    if ([[notification name] isEqualToString:@"GameEndedNotification"]) 
    { 
     NSLog (@"Successfully received the test notification! %@", [self class]); 
     NSLog(@"score: %d", [notification.userInfo[@"score"] intValue]); 

     //get variables 
     score = [notification.userInfo[@"score"] intValue]; 
     gameTracking = notification.userInfo[@"gameTracking"]; 

     //show the next view 
     [self performSegueWithIdentifier:@"sg_showScore" sender:self]; 
    } 
} 

- (IBAction)unwindToCocosViewController:(UIStoryboardSegue *)sender { 
    //nothing goes there 
} 

這是我如何初始化的cocos2d遊戲：

-(id) initWithParameters:(NSArray *) parameters 
{ 
    NSLog(@"init TheButton with parameters"); 

    // Apple recommend assigning self with supers return value 
    self = [super init]; 
    if (!self) return(nil); 

    gameParameters = parameters; 

    // Enable touch handling on scene node 
    [self setIsTouchEnabled:YES]; 

    // Create a colored background (Dark Grey) 
    //CCNodeColor *background = [CCNodeColor nodeWithColor:[CCColor colorWithRed:0.6f green:0.6f blue:0.6f alpha:1.0f]]; 
    //[self addChild:background]; 

    CCMenuItem *starMenuItem = [CCMenuItemImage 
           itemFromNormalImage:@"ButtonStar.png" selectedImage:@"ButtonStarSel.png" 
           target:self selector:@selector(increasePoints:)]; 
    CGSize size = [[CCDirector sharedDirector] winSize]; 
    starMenuItem.anchorPoint = ccp(0.5f,0.5f); 
    starMenuItem.position = ccp(size.width/2, size.height/2); 
    CCMenu *starMenu = [CCMenu menuWithItems:starMenuItem, nil]; 
    starMenu.position = CGPointZero; 
    [self addChild:starMenu]; 

    timeLabel = [CCLabelTTF labelWithString:@"0.00" fontName:@"Arial" fontSize:18.0f]; 
    //timeLabel.positionType = CCPositionTypeNormalized; 
    timeLabel.position = ccp(30,size.height-10); 
    // Add the time label 
    [self addChild:timeLabel]; 
    NSLog(@"time: %@", [gameParameters objectAtIndex:0]); 

    clicksLabel = [CCLabelTTF labelWithString:@"0" fontName:@"Arial" fontSize:18.0f]; 
    //clicksLabel.positionType = CCPositionTypeNormalized; 
    clicksLabel.position = ccp(size.width - 20,size.height-10); 
    // Add the time label 
    [self addChild:clicksLabel]; 

    [self startGame]; 

    return self; 
} 


-(void) startGame 
{ 
    clicks = 0; 
    myTime = [[gameParameters objectAtIndex:0] intValue]; 

    [self schedule:@selector(update:)]; 

} 

Answer 1

你不需要內-setupCocos2d重新添加glView，因爲它已經被添加。我不確定這是否是錯誤行爲的唯一原因，但嘗試將此方法從viewDidAppear調用到-viewDidLoad，並且在從ScoreViewController返回時，只需重置您的Cocos2d引擎（例如清除所有標籤或刪除敵人）而不重新創建視圖。

但是，您的方法不是很好，我強烈建議您使用Cocos2d製作所有場景，而不是使用UIViewControllers。場景之間也有很好的轉換（至少在Cocos2d 3.0中）。