NAME¶

poll_joystick - Polls the joystick. Allegro game programming library.

SYNOPSIS¶

#include <allegro.h>

int poll_joystick();

DESCRIPTION¶

The joystick handler is not interrupt driven, so you need to call this function every now and again to update the global position values. Example:

   do {


      /* Get joystick input */


      poll_joystick();


      


      /* Process input for the first joystick */


      if (joy[0].button[0].b)


         first_button_pressed();


   


      if (joy[0].button[1].b)


         second_button_pressed();


      ...


   } while(!done);

RETURN VALUE¶

Returns zero on success or a negative number on failure (usually because no joystick driver was installed).

SEE ALSO¶

install_joystick(3), joy(3), num_joysticks(3), exjoy(3)