public static Comparator<CaptionWorld> DISTANCE = new Comparator<CaptionWorld>() {

    @Override
    public int compare(final CaptionWorld o1, final CaptionWorld o2) {
        if (Minecraft.getMinecraft().thePlayer == null)
            return 0;
        final double d1 = o1.getDistanceTo(Minecraft.getMinecraft().thePlayer);
        final double d2 = o2.getDistanceTo(Minecraft.getMinecraft().thePlayer);
        if (d1 < d2)
            return 1;
        if (d1 > d2)
            return -1;
        return 0;
    }
};