/* install_joystick:
* Initialises the joystick module.
*/
int install_joystick(int type)
{
int c;
if (_joystick_installed)
return 0;
clear_joystick_vars();
allegro_error[0] = 0;
/* search table for a specific driver */
for (c=0; _joystick_driver_list[c].driver; c++) {
if (_joystick_driver_list[c].driver_id == type) {
joystick_driver = _joystick_driver_list[c].driver;
joy_type = type;
if (joystick_driver->init() != 0) {
if (!allegro_error[0])
sprintf(allegro_error, get_config_text("%s not found"), joystick_driver->name);
joystick_driver = NULL;
joy_type = JOY_TYPE_NONE;
return -1;
}
break;
}
}
/* autodetect driver */
if (!joystick_driver) {
if (!joy_loading) {
if (load_joystick_data(NULL) == 0)
return 0;
}
for (c=0; _joystick_driver_list[c].driver; c++) {
if (_joystick_driver_list[c].autodetect) {
joystick_driver = _joystick_driver_list[c].driver;
joy_type = _joystick_driver_list[c].driver_id;
if (_joystick_driver_list[c].driver->init() == 0)
break;
}
}
}
for (c=0; c<num_joysticks; c++)
update_calib(c);
poll_joystick();
_add_exit_func(remove_joystick);
_joystick_installed = TRUE;
return 0;
}
void InputDeviceSingleton::InitializeJoystick()
{
static bool firstCall = true;
// make sure that we only install the joystick driver once
// because this routine may incorrectly be called multiple times
if (firstCall)
{
/*
* check to see if the joysticks have previously been calibrated
*
* if the joysticks were not calibrated, then we go through a
* calibration sequence and then save the calibration data to a file.
*
* if the calibration file exists, we then try to load the data.
* if the loading of the data fails, then we disable the joystick.
*/
bool previouslyCalibrated = false;
FILE* fp = fopen("joysettings.dat", "rb");
if (fp)
{
fclose(fp);
if (0 != load_joystick_data("joysettings.dat"))
{
LogWarning("Joystick Data File was found, but it could not be loaded! Possibly has been corrupted!");
}
else
{
previouslyCalibrated = true;
joystickAvailable_ = true;
}
}
if (!previouslyCalibrated)
{
// try to install the joystick driver
if (0 != install_joystick(JOY_TYPE_AUTODETECT))
{
LogFatal("Could not install Allegro Joystick driver!");
}
// calibrate the joysticks
BeginJoystickCalibration();
}
// first-time-only initialize has finished
firstCall = false;
}
}
