calibrate_joystick(3alleg4) [opendarwin man page]
calibrate_joystick(3alleg4) Allegro manual calibrate_joystick(3alleg4) 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 calibra- tion series for the specified stick, assuming that the joystick has been positioned in the manner described by a previous call to cali- brate_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 ", msg); readkey(); if (calibrate_joystick(i) != 0) { textprintf_ex(..., "oops! "); 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) Allegro version 4.4.2 calibrate_joystick(3alleg4)
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exjoy(3alleg4) Allegro manual exjoy(3alleg4) NAME
exjoy - Detecting, calibrating and using joystick input. Allegro game programming library. SYNOPSIS
#include <allegro.h> Example exjoy DESCRIPTION
This program uses the Allegro library to detect and read the value of a joystick. The output of the program is a small target sight on the screen which you can move. At the same time the program will tell you what you are doing with the joystick (moving or firing). SEE ALSO
BITMAP(3alleg4), END_OF_MAIN(3alleg4), SCREEN_H(3alleg4), SCREEN_W(3alleg4), allegro_error(3alleg4), allegro_init(3alleg4), allegro_mes- sage(3alleg4), blit(3alleg4), calibrate_joystick(3alleg4), calibrate_joystick_name(3alleg4), circle(3alleg4), clear_bitmap(3alleg4), clear_keybuf(3alleg4), create_bitmap(3alleg4), default_palette(3alleg4), destroy_bitmap(3alleg4), drawing_mode(3alleg4), font(3alleg4), install_joystick(3alleg4), install_keyboard(3alleg4), joy(3alleg4), key(3alleg4), keypressed(3alleg4), num_joysticks(3alleg4), pal- ette_color(3alleg4), poll_joystick(3alleg4), putpixel(3alleg4), readkey(3alleg4), screen(3alleg4), set_gfx_mode(3alleg4), set_pal- ette(3alleg4), textout_centre_ex(3alleg4), textprintf_centre_ex(3alleg4), textprintf_ex(3alleg4) Allegro version 4.4.2 exjoy(3alleg4)