@Override
    public void update() {
        while (!mouseMotionEvents.isEmpty()) {
            listener.onMouseMotionEvent(mouseMotionEvents.poll());
        }

        while (!mouseButtonEvents.isEmpty()) {
            listener.onMouseButtonEvent(mouseButtonEvents.poll());
        }
    }
Check if the input is initialized.
@return <code>true</code> if the input is initialized and <code>false</code> otherwise.
jme3-vr/src/main/java/com/jme3/input/lwjgl/GlfwMouseInputVR.java