The Cocos2d-x framework comes with an audio engine called CocosDenshion, which has been inherited from Cocos2d for iPhone. This engine encapsulates all the complexity of playing sound effects and background music. Now, Cocos2d-x has another audio engine that was built from scratch with the aim of providing more flexibility than the CocosDenshion library. Be aware that there is no plan to eliminate the CocosDenshion audio engine from the Cocos2d-x framework, it is now common in Cocos2d-x to have redundant components so that programmers can pick whatever fits their needs better.
The following topics will be covered within this chapter:
Playing background music and sound effects
Modifying the audio properties
Handling audio when leaving the game
The new audio engine