148 lines
4 KiB
C
148 lines
4 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure, Markus Armbruster
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*
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* Empire is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* ---
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*
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* See files README, COPYING and CREDITS in the root of the source
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* tree for related information and legal notices. It is expected
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* that future projects/authors will amend these files as needed.
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*
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* ---
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*
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* set.c: Place units/ships/planes/nukes up for sale.
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*
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* Known contributors to this file:
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* Dave Pare, 1986
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* Pat Loney, 1992
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* Steve McClure, 1996
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* Markus Armbruster, 2004-2018
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*/
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#include <config.h>
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#include "commands.h"
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#include "empobj.h"
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#include "land.h"
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#include "optlist.h"
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#include "plane.h"
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#include "ship.h"
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#include "trade.h"
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/*
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* format: set <type> <SHIP/NUKE> <PRICE>
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*/
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int
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set(void)
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{
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static int ef_saleable[] = { EF_SHIP, EF_PLANE, EF_LAND, EF_NUKE, EF_BAD };
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char *p;
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int type;
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int price;
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char prompt[80];
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struct trdstr trade;
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struct nstr_item ni;
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struct nstr_item ni_trade;
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union empobj_storage item;
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struct sctstr sect;
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int freeslot;
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int foundslot;
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int id;
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time_t now;
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char buf[1024];
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if (!opt_MARKET) {
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pr("The market is disabled.\n");
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return RET_FAIL;
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}
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check_market();
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check_trade();
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p = getstarg(player->argp[1], "Ship, plane, land unit or nuke? ", buf);
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if (!p)
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return RET_SYN;
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if ((type = ef_byname_from(p, ef_saleable)) < 0) {
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pr("You can sell only ships, planes, land units or nukes\n");
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return RET_SYN;
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}
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if (!snxtitem(&ni, type, player->argp[2], NULL))
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return RET_SYN;
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while (nxtitem(&ni, &item)) {
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if (!player->owner && !player->god)
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continue;
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getsect(item.gen.x, item.gen.y, §);
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if (!military_control(§)) {
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pr("Military control required to sell goods.\n");
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return RET_FAIL;
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}
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trade.trd_type = type;
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sprintf(prompt, "%s #%d; price? ",
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trade_nameof(&trade, &item.gen), ni.cur);
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if (!(p = getstarg(player->argp[3], prompt, buf)))
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return RET_FAIL;
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if (!check_obj_ok(&item.gen))
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return RET_FAIL;
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if ((price = atoi(p)) < 0)
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continue;
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foundslot = -1;
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freeslot = -1;
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snxtitem_all(&ni_trade, EF_TRADE);
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while (nxtitem(&ni_trade, &trade)) {
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if (!trade.trd_owner) {
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if (freeslot < 0)
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freeslot = ni_trade.cur;
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continue;
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}
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if (trade.trd_unitid == ni.cur && trade.trd_type == type) {
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foundslot = ni_trade.cur;
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break;
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}
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}
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if (price <= 0) {
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if (foundslot >= 0) {
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pr("%s #%d (lot #%d) removed from trading\n",
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trade_nameof(&trade, &item.gen), ni.cur, foundslot);
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trade.trd_owner = 0;
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puttrade(ni_trade.cur, &trade);
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}
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} else {
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if (trade_has_unsalable_cargo(&item.gen, 1))
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return RET_FAIL;
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if (foundslot >= 0)
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id = foundslot;
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else if (freeslot >= 0)
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id = freeslot;
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else
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id = ni_trade.cur;
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ef_blank(EF_TRADE, id, &trade);
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trade.trd_x = 1;
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trade.trd_y = 0;
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trade.trd_type = type;
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trade.trd_owner = player->cnum;
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trade.trd_unitid = ni.cur;
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trade.trd_price = price;
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(void)time(&now);
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trade.trd_markettime = now;
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trade.trd_maxbidder = player->cnum;
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puttrade(id, &trade);
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pr("%s #%d (lot #%d) price %s to $%d\n",
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trade_nameof(&trade, &item.gen), ni.cur,
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id, foundslot >= 0 ? "reset" : "set", price);
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}
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}
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return RET_OK;
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}
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