1 Locator::provide(NULL);

 1 class LoggedAudio : public Audio
 2 {
 3 
 4 public:
 5   LoggedAudio(Audio &wrapped)
 6   : wrapped_(wrapped)
 7   {} 
 8 
 9   virtual void playSound(int soundID)
10   {
11     log("play sound");
12     wrapped_.playSound(soundID);
13   }
14 
15   virtual void stopSound(int soundID)
16   {
17     log("stop sound");
18     wrapped_.stopSound(soundID);
19   } 
20 
21   virtual void stopAllSounds()
22   {
23     log("stop all sounds");
24     wrapped_.stopAllSounds();
25   }
26 
27 private:
28   void log(const char* message)
29   {
30     // Code to log message...
31   } 
32 
33   Audio &wrapped_;
34 
35 };