public class MovedorSprite implements Runnable {

    private Sprite fantasma;
    private boolean mover;

    public MovedorSprite( Sprite fantasma ) {

        this.fantasma = fantasma;
        this.mover = true;

    }

    public void run() {

        while( mover ) {
            fantasma.move(); //aqui move pra algum lugar
        }

    }

    public void destroy() {
        this.mover = false;
    }

}