sound effect with unlocker
StartPoint: normalSound, pressedSound specify the sound to be played when change to normal or pressed.
EndPoint: reachedSound, specify the sound to be played when reach this endpoint.
<Unlocker name="unlocker">
<StartPoint x="0" y="440" w="480" h="400" normalSound="sound_normal.mp3" pressedSound="sound_normal.mp3">
<EndPoint x="0" y="640" w="480" h="400" reachedSound="sound_reached.mp3">