JNIEXPORT jint JNICALL Java_at_wisch_joystick_JoystickManager_openFFJoystick (JNIEnv *env, jclass, jint joystickIndex) {
SDL_Haptic* hapticDevice = SDL_HapticOpenFromJoystick(joysticks[joystickIndex]);
if (hapticDevice == NULL) {
// Most likely Joystick does not have FF-capabilities...
return -4;
}
int hapticDeviceIndex = SDL_HapticIndex(hapticDevice);
/* # the previous line did not work with previous versions of SDL
# see http://bugzilla.libsdl.org/show_bug.cgi?id=946
# -> had to use the following workaround
# (the implementation of SDL_HapticOpenFromJoystick in linux in fact does it it in the same way) */
/* int hapticDeviceIndex = -5;
for (int i = 0; i < SDL_NumHaptics(); i++) {
if (SDL_HapticName(i) != NULL) {
if (SDL_strcmp(SDL_HapticName(i), SDL_JoystickName(joystickIndex)) == 0) {
hapticDeviceIndex = i;
break;
}
}
}*/
if (hapticDeviceIndex < 0) {
throwException(env, SDL_GetError());
return hapticDeviceIndex;
}
ffjoysticks[hapticDeviceIndex] = hapticDevice;
return hapticDeviceIndex;
}
bool Joystick::setVibration()
{
bool success = true;
if (SDL_WasInit(SDL_INIT_HAPTIC) && haptic && SDL_HapticIndex(haptic) != -1)
success = (SDL_HapticStopEffect(haptic, vibration.id) == 0);
if (success)
vibration.left = vibration.right = 0.0f;
return success;
}
bool Joystick::checkCreateHaptic()
{
if (!isConnected())
return false;
if (!SDL_WasInit(SDL_INIT_HAPTIC) && SDL_InitSubSystem(SDL_INIT_HAPTIC) < 0)
return false;
if (haptic && SDL_HapticIndex(haptic) != -1)
return true;
if (haptic)
{
SDL_HapticClose(haptic);
haptic = nullptr;
}
haptic = SDL_HapticOpenFromJoystick(joyhandle);
vibration = Vibration();
return haptic != nullptr;
}
