I don't think it is an attempt... it's just two spawners of objects with given physics movement. <img src="{SMILIES_PATH}/icon_neutral.gif" alt=":|" title="Neutral" />
You should've added condition to destroy "sinewave" effect or how it is called if PS is under 2.0.
Well... but... yes, it works. <img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" />