NAME

       calibrate_joystick - Calibrates the specified joystick. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       int calibrate_joystick(int n);

DESCRIPTION

       Most  joysticks  need  to  be calibrated before they can provide full analogue input. This
       function performs the next operation in the calibration series for  the  specified  stick,
       assuming  that the joystick has been positioned in the manner described by a previous call
       to calibrate_joystick_name(), returning zero on success. For example, a simple routine  to
       fully calibrate all the joysticks might look like:

          int i;

          for (i=0; i<;num_joysticks; i++) {
             while (joy[i].flags & JOYFLAG_CALIBRATE) {
                char *msg = calibrate_joystick_name(i);
                textprintf_ex(..., "%s, and press a key\n", msg);
                readkey();
                if (calibrate_joystick(i) != 0) {
                   textprintf_ex(..., "oops!\n");
                   readkey();
                   exit(1);
                }
             }
          }

RETURN VALUE

       Returns zero on success, non-zero if the calibration could not be performed successfully.

SEE ALSO

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