#ifndef MUSIC_H#define MUSIC_H#include "gamedefs.h"/* 1 if the music system is enabled. */extern int music_enabled;/* Initializes the music system. Be sure to call InitAudio first. */void InitMusic(void);/* Shuts down the music system. */void CleanupMusic(void);/* Loads a music file for the player. Returns 0 on success, -1 on failure. */int LoadMusic(char *filename);/* Starts music playback if music is enabled and a file is loaded. */void StartMusic(void);/* Stops music playback. */void StopMusic(void);/* Keeps the music system fed with data. Call this frequently. */void UpdateMusic(void);#endif