DOKK / manpages / debian 10 / allegro4-doc / poll_joystick.3alleg4.en
poll_joystick(3alleg4) Allegro manual poll_joystick(3alleg4)

poll_joystick - Polls the joystick. Allegro game programming library.

#include <allegro.h>

int poll_joystick();

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);

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

install_joystick(3alleg4), joy(3alleg4), num_joysticks(3alleg4), exjoy(3alleg4)

version 4.4.2 Allegro