void cleanup(void);
int addtext(int x, int y, int size, char *string, SDL_Color *c, int delay);
void drawscore(void);
void drawtext(void);
void movetext(void);
void killtext(text_t *t);
void removeall(void);
void removetext(void);
void drawlevel(void);
void removesprite(sprite_t *s);
void removenetting(sprite_t *s);
void drawnetting(sprite_t *s);
void dogravity(sprite_t *s);
void dotileeffects(sprite_t *s);
int movex(sprite_t *s,double amt);
void movesprite(sprite_t *s);
int isinwater(sprite_t *s);
int isroofabove(sprite_t *s);
int isroofnabove(sprite_t *s,int howfar);
int isonground(sprite_t *s);
int isongroundpoint(sprite_t *s, int x, int y);
int isonladder(sprite_t *s);
int isonbridge(sprite_t *s);
int isladderabove(sprite_t *s);
int dofruiteffect(sprite_t *s);
int ismonster(int id);
void checkcollide(sprite_t *s);
void die(sprite_t *s);
void nextlevel(void);
void jump(sprite_t *s, int dir);
double getspeed(sprite_t *s );
void adjustheight(sprite_t *s);
void tick(void);
void usage(void);
int canmove(sprite_t *pl);
int canturn(sprite_t *pl);
int initsound(void);
int loadfx(int sid, char *filename);
void playfx(int num);