It is a common task in many games to provide the ON and OFF switch. The most common scenario that I always come across is turning sound and music on and off. We are going to use the same CCButton class to add buttons to the MenuScene class to allow a user to turn the sound and music on and off. To do this, perform the following steps:
Create the group named
SoundButtonsin theResourcesgroup. Then, open the book supporting files atChapter_09/Assets/SoundButtonsand add the button images to that newly created group.Open the
AudioManager.hfile and add the following two properties that we'll use to check if the sound and music is enabled, and set the initial state of the buttons as follows:@property (nonatomic, readonly) BOOL isSoundEnabled; @property (nonatomic, readonly) BOOL isMusicEnabled;
While still in the
AudioManager.hfile, add two more method declarations:-(void)toggleSound; -(void)toggleMusic;
After that, open the
AudioManager.mfile and...