static int EventCallback(SDL_Event *event, TXT_UNCAST_ARG(joystick_axis))
{
TXT_CAST_ARG(txt_joystick_axis_t, joystick_axis);
boolean advance;
if (event->type != SDL_JOYBUTTONDOWN)
{
return 0;
}
// At this point, we have a button press.
// In the first "center" stage, we're just trying to work out which
// joystick is being configured and which button the user is pressing.
if (joystick_axis->config_stage == CONFIG_CENTER)
{
joystick_axis->config_button = event->jbutton.button;
IdentifyBadAxes(joystick_axis);
// Advance to next stage.
joystick_axis->config_stage = CONFIG_STAGE1;
SetCalibrationLabel(joystick_axis);
return 1;
}
// In subsequent stages, the user is asked to push in a specific
// direction and press the button. They must push the same button
// as they did before; this is necessary to support button axes.
if (event->jbutton.which == SDL_JoystickInstanceID(joystick_axis->joystick)
&& event->jbutton.button == joystick_axis->config_button)
{
switch (joystick_axis->config_stage)
{
default:
case CONFIG_STAGE1:
advance = CalibrateAxis(joystick_axis);
break;
case CONFIG_STAGE2:
advance = SetButtonAxisPositive(joystick_axis);
break;
}
// Advance to the next calibration stage?
if (advance)
{
joystick_axis->config_stage = NextCalibrateStage(joystick_axis);
SetCalibrationLabel(joystick_axis);
// Finished?
if (joystick_axis->config_stage == CONFIG_CENTER)
{
TXT_CloseWindow(joystick_axis->config_window);
if (joystick_axis->callback != NULL)
{
joystick_axis->callback();
}
}
return 1;
}
}
return 0;
}
static int CalibrationEventCallback(SDL_Event *event, void *user_data)
{
boolean advance;
if (event->type != SDL_JOYBUTTONDOWN)
{
return 0;
}
// At this point, we have a button press.
// In the first "center" stage, we're just trying to work out which
// joystick is being configured and which button the user is pressing.
if (calibrate_stage == CALIBRATE_CENTER)
{
joystick_index = event->jbutton.which;
calibrate_button = event->jbutton.button;
IdentifyBadAxes();
// If the joystick is a known one, auto-load default
// config for it.
if (IsKnownJoystick(joystick_index))
{
LoadKnownConfiguration();
usejoystick = 1;
TXT_CloseWindow(calibration_window);
}
else
{
// Advance to next stage.
calibrate_stage = CALIBRATE_LEFT;
SetCalibrationLabel();
}
return 1;
}
// In subsequent stages, the user is asked to push in a specific
// direction and press the button. They must push the same button
// as they did before; this is necessary to support button axes.
if (event->jbutton.which == joystick_index
&& event->jbutton.button == calibrate_button)
{
switch (calibrate_stage)
{
default:
case CALIBRATE_LEFT:
advance = CalibrateAxis(&joystick_x_axis, &joystick_x_invert);
break;
case CALIBRATE_RIGHT:
advance = SetButtonAxisPositive(&joystick_x_axis);
break;
case CALIBRATE_UP:
advance = CalibrateAxis(&joystick_y_axis, &joystick_y_invert);
break;
case CALIBRATE_DOWN:
advance = SetButtonAxisPositive(&joystick_y_axis);
break;
}
// Advance to the next calibration stage?
if (advance)
{
calibrate_stage = NextCalibrateStage();
SetCalibrationLabel();
// Finished?
if (calibrate_stage == CALIBRATE_CENTER)
{
usejoystick = 1;
TXT_CloseWindow(calibration_window);
}
return 1;
}
}
return 0;
}