@Override
public boolean handleMotionEvent(MotionEvent event) {
if ((event.getSource() & InputDevice.SOURCE_JOYSTICK) != 0) {
int actionPointerIndex = event.getActionIndex();
int action = event.getActionMasked();
switch (action) {
case MotionEvent.ACTION_MOVE:
SDLJoystick joystick = getJoystick(event.getDeviceId());
if (joystick != null) {
for (int i = 0; i < joystick.axes.size(); i++) {
InputDevice.MotionRange range = joystick.axes.get(i);
/* Normalize the value to -1...1 */
float value =
(event.getAxisValue(range.getAxis(), actionPointerIndex) - range.getMin())
/ range.getRange()
* 2.0f
- 1.0f;
SDLActivity.onNativeJoy(joystick.device_id, i, value);
}
}
break;
default:
break;
}
}
return true;
}
@Override
public void pollInputDevices() {
int[] deviceIds = InputDevice.getDeviceIds();
// It helps processing the device ids in reverse order
// For example, in the case of the XBox 360 wireless dongle,
// so the first controller seen by SDL matches what the receiver
// considers to be the first controller
for (int i = deviceIds.length - 1; i > -1; i--) {
SDLJoystick joystick = getJoystick(deviceIds[i]);
if (joystick == null) {
joystick = new SDLJoystick();
InputDevice joystickDevice = InputDevice.getDevice(deviceIds[i]);
if ((joystickDevice.getSources() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) {
joystick.device_id = deviceIds[i];
joystick.name = joystickDevice.getName();
joystick.axes = new ArrayList<InputDevice.MotionRange>();
for (InputDevice.MotionRange range : joystickDevice.getMotionRanges()) {
if ((range.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) {
joystick.axes.add(range);
}
}
mJoysticks.add(joystick);
SDLActivity.nativeAddJoystick(
joystick.device_id, joystick.name, 0, -1, joystick.axes.size(), 0, 0);
}
}
}
/* Check removed devices */
ArrayList<Integer> removedDevices = new ArrayList<Integer>();
for (int i = 0; i < mJoysticks.size(); i++) {
int device_id = mJoysticks.get(i).device_id;
int j;
for (j = 0; j < deviceIds.length; j++) {
if (device_id == deviceIds[j]) break;
}
if (j == deviceIds.length) {
removedDevices.add(device_id);
}
}
for (int i = 0; i < removedDevices.size(); i++) {
int device_id = removedDevices.get(i);
SDLActivity.nativeRemoveJoystick(device_id);
for (int j = 0; j < mJoysticks.size(); j++) {
if (mJoysticks.get(j).device_id == device_id) {
mJoysticks.remove(j);
break;
}
}
}
}
@Override
public int compare(InputDevice.MotionRange arg0, InputDevice.MotionRange arg1) {
return arg0.getAxis() - arg1.getAxis();
}