public void moveAndFadeIn (Path path, long pathDuration, float fadePortion)
    {
        move(path);

        setAlpha(0.0f);

        _fadeInDuration = (long)(pathDuration * fadePortion);
    }
public void moveAndFadeIn ( Path path , long pathDuration , float fadePortion ) { move ( path ) ; setAlpha ( 0.0f ) ; _fadeInDuration = ( long ) ( pathDuration * fadePortion ) ; }
Puts this sprite on the specified path and fades it in over the specified duration.

@param path the path to move along
@param fadePortion the portion of time to spend fading in, from 0.0f (no time) to 1.0f (the
entire time)