boolean SDLReadJoystick(int, int *, int *, boolean *, boolean *);
boolean SDLCheckJoystickOpened(int);
void SDLClearJoystickState();
boolean SDLReadJoystick(int, int *, int *, boolean *, boolean *);
boolean SDLCheckJoystickOpened(int);
void SDLClearJoystickState();