#2733 Sound: inner-angle, outer-angle, outer-gain ignored

Replace the sound in ufo-sound.xml with

  <test>
   <name>rumble</name>
   <mode>looped</mode>
   <path>Sounds/rumble.wav</path>
   <position>
    <x>0.0</x>
    <y>0.0</y>
    <z>0.0</z>
   </position>
   <orientation>
    <x>1.0</x>
    <y>0.0</y>
    <z>0.0</z>
    <inner-angle>30.0</inner-angle>
    <outer-angle>60.0</outer-angle>
    <outer-gain>0.25</outer-gain>
   </orientation>
  </test>

run the UFO and rotate the camera in external view

Expected: volume of the sound changes
Have: volume stays the same