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Learning iPhone Game Development with Cocos2D 3.0 by Kirill Muzykov

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Time for action – updating labels

Let's go ahead and add the code to keep the current game stats and display them using labels:

  1. Create a new group called Common.
  2. Right-click on this group and click on New File; it will be Objective-C class. Name it GameStats and make it a subclass of NSObject. Save the file.
  3. Open the GameStats.h file and add the following properties:
    @property (nonatomic, assign) int score;
    @property (nonatomic, assign) int birdsLeft;
    @property (nonatomic, assign) int lives;
  4. Then open the GameStats.m file and add the init method:
    -(instancetype)init
    {
        if (self = [super init])
        {
            self.score = 0;
            self.birdsLeft = 0;
            self.lives = 0;
        }
        
        return self;
    }
  5. Open the HUDLayer.h file and import the GameStats.h header at the top, like this:
    #import ...

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