// set deadzone
if (joy_deadzone > 0 && joy_deadzone <= 1)
{
esult = set_DI_Dword_Property(joystick_device[joystick_count], DIPROP_DEADZONE, 0, DIPH_DEVICE, 10000 * joy_deadzone);
if (result != DI_OK)
{
fprintf(stderr, "Can't set deadzone for Joystick %d - %s\n", joystick_count, joystick_name[joystick_count]);
goto cant_set_deadzone;
}
}

// set saturation
if (joy_saturation > joy_deadzone && joy_saturation < 1)
{
result = set_DI_Dword_Property(joystick_device[joystick_count], DIPROP_SATURATION, 0, DIPH_DEVICE, 10000 * joy_saturation);
if (result != DI_OK)
{
fprintf(stderr, "Can't set saturation for Joystick %d - %s\n", joystick_count, joystick_name[joystick_count]);
goto cant_set_saturation;
}
}

{
LONG val = ((LONG *)&joystick_state[joynum].lX)[joyindex];
LONG top = joystick_range[joynum][joyindex].lMax;
LONG bottom = joystick_range[joynum][joyindex].lMin;
LONG middle = (top + bottom) / 2;

// watch for movement greater "a2d_deadzone" along either axis
// FIXME in the two-axis joystick case, we need to find out
// the angle. Anything else is unprecise.
if (codetype == CODETYPE_AXIS_POS)
return (val > middle + ((top - middle) * a2d_deadzone));
else
return (val < middle - ((middle - bottom) * a2d_deadzone));
}