/*
 *  Empire - A multi-player, client/server Internet based war game.
 *  Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
 *                           Ken Stevens, Steve McClure
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  ---
 *
 *  See files README, COPYING and CREDITS in the root of the source
 *  tree for related information and legal notices.  It is expected
 *  that future projects/authors will amend these files as needed.
 *
 *  ---
 *
 *  trade.h: Definitions for trading units/ships/planes in a time delay
 *           system
 * 
 *  Known contributors to this file:
 *     Dave Pare
 *     Pat Loney, 1992
 *     Steve McClure, 1996
 */

#ifndef TRADE_H
#define TRADE_H

#include "genitem.h"
#include "nuke.h"
#include "plane.h"
#include "land.h"
#include "ship.h"

struct trdstr {
    short ef_type;
    natid trd_owner;
    short trd_uid;
    char trd_type;
    short trd_unitid;
    long trd_price;
    int trd_maxbidder;
    time_t trd_markettime;
    coord trd_x;
    coord trd_y;
};

union trdgenstr {
    struct genitem gen;
    struct nukstr nuk;
    struct plnstr pln;
    struct lndstr lnd;
    struct shpstr shp;
};

extern int trade_check_ok(struct trdstr *, union trdgenstr *);
extern int trade_check_item_ok(union trdgenstr *);
extern char *trade_nameof(struct trdstr *, union trdgenstr *);
extern int trade_desc(struct trdstr *, union trdgenstr *);
extern int trade_getitem(struct trdstr *, union trdgenstr *);

#define gettrade(n, p) ef_read(EF_TRADE, (n), (p))
#define puttrade(n, p) ef_write(EF_TRADE, (n), (p))
#define gettradep(n) (struct trdstr *)ef_ptr(EF_TRADE, (n))

#endif