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poll_joystick

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)