Import of Empire 4.2.12
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d8b7fdfae1
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374
src/lib/commands/buy.c
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374
src/lib/commands/buy.c
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/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* projects/authors will amend these files as needed.
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*
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* ---
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*
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* buy.c: Buy commodities from other nations
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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, 1996-2000
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*/
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#include "misc.h"
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#include "xy.h"
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#include "file.h"
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#include "var.h"
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#include "sect.h"
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#include "nat.h"
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#include "news.h"
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#include "nsc.h"
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#include "item.h"
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#include "deity.h"
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#include "land.h"
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#include "commodity.h"
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#include "plane.h"
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#include "nuke.h"
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#include "ship.h"
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#include "trade.h"
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#include "player.h"
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#include "loan.h"
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#include "commands.h"
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#include "optlist.h"
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extern int MARK_DELAY;
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/*
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* format: buy <COMMODITY>
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*
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*/
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int
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buy(void)
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{
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struct sctstr sect;
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struct natstr *natp;
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struct comstr comm;
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struct comstr ncomm;
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struct comstr comt;
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struct trdstr tmpt;
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struct ichrstr *ip;
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int qty;
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int o, n, q;
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coord x, y;
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char *p;
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float bid;
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time_t now;
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double tally;
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double canspend;
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extern double buytax;
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extern double tradetax;
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s_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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natp = getnatp(player->cnum);
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display_mark(player->argp[1]);
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pr("\n");
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p = getstarg(player->argp[2], "Which lot are you bidding on: ", buf);
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if (p == 0)
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return RET_SYN;
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if (*p == 0)
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return RET_SYN;
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o = atoi(p);
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if (o < 0)
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return RET_SYN;
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if(!getcomm(o, &comm) || comm.com_owner == 0){
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pr("Invalid lot number.\n");
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return RET_OK;
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}
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if (player->argp[1] && *(player->argp[1]) &&
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comm.com_type != player->argp[1][0]) {
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pr("That lot is not of the type you specified.\n");
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return RET_OK;
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}
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if (comm.com_owner == player->cnum){
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pr("You can't bid on your own lot.\n");
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return RET_OK;
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}
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pr("WARNING! This market issues credit. If you make more\n");
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pr(" bids than your treasury can cover at the time of sale,\n");
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pr(" you can potentially go into financial ruin, and see no\n");
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pr(" gains. You have been warned.\n\n");
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if ((p = getstarg(player->argp[3], "How much per unit: ",buf)) == 0)
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return RET_SYN;
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bid = atof(p);
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if (bid <= 0)
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return RET_FAIL;
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if (natp->nat_money < (bid * comm.com_amount * buytax)) {
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pr("This purchase would cost %.2f, %.2f more than you have.\n",
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bid * comm.com_amount * buytax,
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bid * comm.com_amount * buytax - natp->nat_money);
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return RET_FAIL;
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}
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/* check to see if all of the bids that this player has out plus this new bid
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would make him go broke. Ken, I ought to skin you alive for making me code
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this part up.*/
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tally = 0.0;
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for (q = 0; gettrade(q, &tmpt); q++) {
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if (tmpt.trd_maxbidder == player->cnum &&
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tmpt.trd_unitid >= 0 &&
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tmpt.trd_owner != player->cnum) {
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tally += tmpt.trd_maxprice * tradetax;
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}
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}
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for (q = 0; getcomm(q, &comt); q++) {
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if (comt.com_maxbidder == player->cnum &&
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comt.com_owner != 0 &&
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comt.com_owner != player->cnum) {
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tally += (comt.com_maxprice * comt.com_amount) * buytax;
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}
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}
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canspend = natp->nat_money - tally;
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getcomm(o, &comm);
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if ((bid * comm.com_amount * buytax) > canspend) {
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pr("You have overextended yourself in the market\n");
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pr("You can not bid on the current items at that price.\n");
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return RET_OK;
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}
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if (!(p = getstarg(player->argp[4], "destination sector : ", buf)))
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return RET_SYN;
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if (!sarg_xy(p, &x, &y))
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return RET_SYN;
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if (!getsect(x, y, §)) {
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pr("Could not access sector");
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return RET_FAIL;
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}
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if ((sect.sct_type != SCT_WAREH && sect.sct_type != SCT_HARBR) ||
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sect.sct_own != player->cnum) {
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pr("The destination sector is not one of your warehouses.\n");
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return RET_FAIL;
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}
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if (sect.sct_effic < 60) {
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pr("That sector is under construction.\n");
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return RET_FAIL;
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}
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ip = whichitem(comm.com_type);
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n = getvar(ip->i_vtype, (char *)§, EF_SECTOR);
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qty = comm.com_amount;
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if (qty + n > 9990) {
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pr("That sector cannot hold %d more %s. It currently holds %d.\n",
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qty, ip->i_name, n);
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return RET_FAIL;
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}
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/* First we check for room, then we yank back. Probably not necessary. */
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if (putvar(ip->i_vtype, n + qty, (char *)§, EF_SECTOR) <= 0) {
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pr("No room to store %s in %s\n",
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ip->i_name, xyas(sect.sct_x, sect.sct_y, player->cnum));
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return RET_FAIL;
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}
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if (putvar(ip->i_vtype, n, (char *)§, EF_SECTOR) <= 0) {
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pr("Something weird just happened, tell the deity.\n");
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logerror("buy.c: putvar failed.\n");
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return RET_FAIL;
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}
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if ((bid * comm.com_amount) > natp->nat_money) {
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pr("You don't have that much to spend!\n");
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return RET_FAIL;
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}
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getcomm(o, &ncomm);
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if (!ncomm.com_owner) {
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pr("That lot has been taken off the market.\n");
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return RET_FAIL;
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}
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if (bid > 0.04 + comm.com_maxprice){
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comm.com_maxprice = bid;
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/* Add five minutes to the time if less than 5 minutes */
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time(&now);
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if (((MARK_DELAY - (now - comm.com_markettime)) < 300) &&
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comm.com_maxbidder != player->cnum) {
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comm.com_markettime += 300;
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/* Special case - what if so much time has gone by? Well,
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Just reset the markettime so that only 5 minutes are left */
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if ((MARK_DELAY - (now - comm.com_markettime)) < 0)
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comm.com_markettime = (now - (MARK_DELAY - 300));
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}
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comm.com_maxbidder = player->cnum;
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comm.com_x = x;
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comm.com_y = y;
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putcomm(o, &comm);
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pr("Your bid is being considered.\n");
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} else {
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pr("Your bid wasn't high enough (you need to bid at least $0.05 higher\n");
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pr("than the last bid.\n");
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return RET_OK;
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}
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check_market();
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return RET_OK;
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}
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int
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check_market(void)
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{
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extern double buytax;
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struct comstr comm;
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struct sctstr *sect;
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struct ichrstr *ip;
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struct natstr *natp;
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int m;
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int n;
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time_t now;
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double tmoney;
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double tleft;
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double subleft;
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double monleft;
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double gain;
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double price;
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struct lonstr loan;
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long outstanding; /* Outstanding debt */
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long couval; /* Value of country's goods */
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int foundloan;
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int j;
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/* logerror("Checking the market.\n");*/
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for (n = 0; getcomm(n, &comm); n++) {
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if (comm.com_maxbidder == comm.com_owner ||
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comm.com_owner == 0)
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continue;
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(void)time(&now);
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tleft = MARK_DELAY / 3600.0 - (now - comm.com_markettime) / 3600.0;
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if (tleft < 0)
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tleft = 0;
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if (tleft > 0.0)
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continue;
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ip = whichitem(comm.com_type);
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sect = getsectp(comm.com_x, comm.com_y);
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m = getvar(ip->i_vtype, (char *)sect, EF_SECTOR);
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monleft = 0;
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price = comm.com_maxprice * comm.com_amount * buytax;
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gain = comm.com_maxprice * comm.com_amount;
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natp = getnatp(comm.com_maxbidder);
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tmoney = natp->nat_money;
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if (tmoney <= 0)
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monleft = price;
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if (tmoney < price && tmoney > 0) {
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monleft = price - (tmoney - 1);
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tmoney = 1;
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price = price - monleft;
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} else if (tmoney > 0) {
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monleft = 0;
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tmoney = tmoney - price;
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}
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/* Subtract the amount of money that needs to come out in a loan. */
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subleft = monleft;
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if (opt_LOANS) {
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/* Try to make a loan for the rest from the owner. */
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if (monleft > 0 && tmoney > 0) {
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if ((float)((float)price / (float)(price + monleft)) < 0.1) {
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wu(0, comm.com_maxbidder, "You need at least 10 percent down to purchase something on credit.\n");
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} else {
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couval = get_couval(comm.com_maxbidder);
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outstanding = get_outstand(comm.com_maxbidder);
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couval = couval - outstanding;
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if (couval > monleft) {
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/* Make the loan */
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foundloan = 0;
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for (j = 0; getloan(j, &loan); j++) {
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if (loan.l_status != LS_FREE)
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continue;
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foundloan = 1;
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break;
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}
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if (!foundloan)
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ef_extend(EF_LOAN, 1);
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loan.l_status = LS_SIGNED;
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loan.l_loner = comm.com_owner;
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loan.l_lonee = comm.com_maxbidder;
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loan.l_irate = 25;
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loan.l_ldur = 4;
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loan.l_amtpaid = 0;
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loan.l_amtdue = monleft;
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time(&loan.l_lastpay);
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loan.l_duedate = (loan.l_ldur * SECS_PER_DAY) + loan.l_lastpay;
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loan.l_uid = j;
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if (!putloan(j, &loan))
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logerror("Error writing to the loan file.\n");
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else
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monleft = 0;
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nreport(comm.com_maxbidder,N_FIN_TROUBLE, comm.com_owner, 1);
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wu(0, comm.com_maxbidder, "You just took loan #%d for $%.2f to cover the cost of your purchase.\n", j, loan.l_amtdue);
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wu(0, comm.com_owner, "You just extended loan #%d to %s to help with the purchase cose.\n", j, cname(comm.com_maxbidder));
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} else {
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nreport(comm.com_maxbidder,N_CREDIT_JUNK, comm.com_owner, 1);
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wu(0, comm.com_maxbidder, "You don't have enough credit to get a loan.\n");
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wu(0, comm.com_owner, "You just turned down a loan to %s.\n", cname(comm.com_maxbidder));
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}
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}
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}
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}
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if (monleft > 0) {
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nreport(comm.com_maxbidder, N_WELCH_DEAL, comm.com_owner, 1);
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wu(0, comm.com_maxbidder,
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"You didn't have enough cash/credit to cover the cost.\n");
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wu(0, comm.com_owner,
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"Sale #%d fell through. Goods remain on the market.\n", n);
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comm.com_maxbidder = comm.com_owner;
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} else if (sect->sct_type != SCT_WAREH && sect->sct_type != SCT_HARBR) {
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wu(0, comm.com_maxbidder,
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"Sector not a warehouse now, sale #%d fell though.\n", n);
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wu(0, comm.com_owner,
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"Sale #%d fell through. Goods remain on the market.\n", n);
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comm.com_maxbidder = comm.com_owner;
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} else if (putvar(ip->i_vtype, m + comm.com_amount,
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(char *)sect, EF_SECTOR) <= 0) {
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wu(0, comm.com_maxbidder,
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"Warehouse full, sale #%d fell though.\n", n);
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wu(0, comm.com_owner,
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"Sale #%d fell through. Goods remain on the market.\n", n);
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comm.com_maxbidder = comm.com_owner;
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} else {
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putsect(sect);
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nreport(comm.com_owner, N_MAKE_SALE, comm.com_maxbidder, 1);
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wu(0, comm.com_owner, "%s bought %d %c's from you for $%.2f\n",
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cname(comm.com_maxbidder), comm.com_amount,
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comm.com_type, gain);
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wu(0, comm.com_maxbidder, "You just bought %d %c's from %s for $%.2f\n",
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comm.com_amount, comm.com_type, cname(comm.com_owner),
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gain * buytax);
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natp=getnatp(comm.com_owner);
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/* Make sure we subtract the amount that came out in a loan */
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natp->nat_money += (gain - subleft);
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natp=getnatp(comm.com_maxbidder);
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natp->nat_money = tmoney;
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comm.com_owner = 0;
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}
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comm.com_owner = 0;
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putcomm(n, &comm);
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}
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/* logerror("Done checking the market.\n");*/
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return RET_OK;
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}
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