void sound_play(void);
-int cave_convert(char *filename);
+int cave_convert(char *);
+boolean LoadNativeLevel_EM(char *);
void game_init_vars(void);
int game_play_init(int, char *);
void synchro_2(void);
void synchro_3(void);
-int clean_emerald(unsigned char *src, unsigned long *length);
-void convert_emerald(unsigned char *src);
+boolean cleanup_em_level(unsigned char *src, int *length);
+void convert_em_level(unsigned char *src);
+void prepare_em_level(void);
int sound_thread(void);
int read_sample(char *name, short **data, long *length);