/// Presents a list of pet eggs that can be hatched (ZC_PETEGG_LIST).
/// 01a6 <packet len>.W { <index>.W }*
void clif_sendegg(struct map_session_data *sd) {
    int i, n, fd;
 
    nullpo_retv(sd);
 
    fd = sd->fd;
    if (battle_config.pet_no_gvg && map_flag_gvg2(sd->bl.m)) { //Disable pet hatching in GvG grounds during Guild Wars [Skotlex]
        clif->message(fd, msg_sd(sd, 866)); // "Pets are not allowed in Guild Wars."
        return;
    }
 
    WFIFOHEAD(fd, MAX_INVENTORY * 2 + 4);
    WFIFOW(fd,0) = 0x1a6;
    for (i = n = 0; i < MAX_INVENTORY; i++) {
        if (sd->status.inventory[i].nameid <= 0 || sd->inventory_data[i] == NULL || sd->inventory_data[i]->type!=IT_PETEGG || sd->status.inventory[i].amount <= 0)
            continue;
        WFIFOW(fd, n * 2 + 4) = i + 2;
        n++;
    }
 
    if (!n) return;
 
    WFIFOW(fd, 2) = 4 + n * 2;
    WFIFOSET(fd, WFIFOW(fd, 2));
 
    sd->menuskill_id = SA_TAMINGMONSTER;
    sd->menuskill_val = -1;
}