Initialises the joystick.
Installs Allegro's joystick handler, and calibrates the centre position
values. The type parameter should usually be JOY_TYPE_AUTODETECT, or see
the platform specific documentation for a list of the available drivers.
You must call this routine before using any other joystick functions, and
you should make sure that all joysticks are in the middle position at the
"Center the joystick and press a key",
SCREEN_W/2, SCREEN_H/2, red_color, -1);
if (install_joystick(JOY_TYPE_AUTODETECT) != 0)
abort_on_error("Error initialising joystick!");
Returns zero on success. As soon as you have installed the joystick
module, you will be able to read the button state and digital (on/off
toggle) direction information, which may be enough for some games. If you
want to get full analogue input, though, you need to use the
calibrate_joystick() functions to measure the exact range of the inputs:
The following threads each have code containing this keyword:
Note: You can click on the numbers to jump directly to the posts that reference this page.
The following projects include source code containing this keyword: