Import of Empire 4.2.12
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commit
d8b7fdfae1
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src/lib/commands/trad.c
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601
src/lib/commands/trad.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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* trad.c: Buy units/ships/planes/nukes 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 <ctype.h>
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#include "misc.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 "item.h"
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#include "ship.h"
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#include "nuke.h"
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#include "land.h"
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#include "plane.h"
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#include "trade.h"
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#include "deity.h"
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#include "xy.h"
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#include "nsc.h"
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#include "file.h"
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#include "player.h"
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#include "commodity.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 sect_mob_neg_factor;
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extern int etu_per_update;
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extern int TRADE_DELAY;
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/*
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* format: trade
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*/
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int
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trad(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 comt;
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int lotno;
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float price;
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coord sx, sy;
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int n;
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char *p;
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struct nstr_item ni;
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struct trdstr trade;
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struct trdstr tmpt;
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union trdgenstr tg;
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int plflags;
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extern double tradetax;
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extern double buytax;
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double canspend;
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time_t now;
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int bid;
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double tleft;
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double tally;
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int q;
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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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/* First, we execute all trades, so that we can only buy what is available. */
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check_market();
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check_trade();
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pr("\n Empire Trade Report\n ");
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prdate();
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n = 0;
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pr(" lot high bid by time left owner description\n");
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pr(" --- -------- -- --------- ----- -------------------------\n");
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snxtitem_all(&ni, EF_TRADE);
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while (nxtitem(&ni, (char *)&trade)) {
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if (trade.trd_unitid < 0)
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continue;
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if (!trade_getitem(&trade, &tg)) {
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continue;
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};
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/* fix up database if things get weird */
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/*if (trade.trd_owner != tg.gen.trg_own) {
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trade.trd_unitid = -1;
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(void) puttrade(ni.cur, &trade);
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continue;
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}*/
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pr(" %3d ", ni.cur);
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(void) time(&now);
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tleft = TRADE_DELAY/3600.0 - (now - trade.trd_markettime) / 3600.0;
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if (tleft < 0.0) tleft = 0.0;
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pr("$%7d %2d %5.2f hrs ",trade.trd_maxprice,
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trade.trd_maxbidder, tleft);
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(void) trade_desc(&trade, &tg); /* XXX */
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pr("\n");
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if (trade.trd_owner == player->cnum && !player->god)
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pr(" (your own lot)\n");
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n++;
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}
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if (n == 0) {
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pr("Nothing to buy at the moment...\n");
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return RET_OK;
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}
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if ((p = getstring("Which lot to buy: ", buf)) == 0 || *p == 0)
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return RET_OK;
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if (isdigit(*p) == 0)
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return RET_OK;
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lotno = atoi(p);
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if (lotno < 0 || lotno >= ni.cur) {
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pr("Bad lot number\n");
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return RET_OK;
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}
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if (!gettrade(lotno, &trade)) {
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pr("No such lot number\n");
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return RET_OK;
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}
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if (trade.trd_unitid < 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 (!trade_getitem(&trade, &tg)) {
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pr("Can't find trade #%d!\n", trade.trd_unitid);
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trade.trd_unitid = -1;
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if (!puttrade(lotno, &trade)) {
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pr("Couldn't save after getitem failed; get help!\n");
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return RET_SYS;
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}
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return RET_OK;
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}
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switch (trade.trd_type) {
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case EF_NUKE:
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/*
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if (!getsect(tg.gen.trg_x, tg.gen.trg_y, §)) {
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return RET_FAIL;
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}
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trade.trd_owner = sect.sct_own;
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break;
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*/
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case EF_PLANE:
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case EF_SHIP:
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case EF_LAND:
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break;
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default:
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pr("Bad unit type on lot number %d\n", lotno);
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return RET_FAIL;
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}
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if (trade.trd_owner == player->cnum) {
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pr("You can't buy from yourself!\n");
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return RET_OK;
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}
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price = trade.trd_maxprice;
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natp = getnatp(player->cnum);
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if (natp->nat_money < price) {
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pr("You don't have %.2f to spend!\n", price);
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return RET_OK;
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}
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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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/*
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* Find the destination sector for the plane before the trade
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* is actually made. Must be owned (except for satellites) and
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* must be a 60% airfield (except for VTOL planes).
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*/
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if (((trade.trd_type == EF_PLANE) || (trade.trd_type == EF_NUKE))
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&& ((trade.trd_type == EF_NUKE) ||
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!(tg.pln.pln_flags & PLN_LAUNCHED))) {
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plflags = plchr[(int)tg.pln.pln_type].pl_flags;
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while (1) {
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p = getstring("Destination sector: ", buf);
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if (!trade_check_ok(lotno, &trade, &tg))
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return RET_FAIL;
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if (p == 0) {
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return RET_FAIL;
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}
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if (!sarg_xy(p, &sx, &sy) ||
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!getsect(sx, sy, §)) {
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pr("Bad sector designation; try again!\n");
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continue;
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}
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if (!player->owner && !(plflags & P_O)) {
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pr("You don't own that sector; try again!\n");
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continue;
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}
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if (!(plflags & (P_V | P_O))) {
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if (!player->god && (sect.sct_type != SCT_AIRPT)) {
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pr(
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"Destination sector is not an airfield!\n");
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continue;
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}
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if (!player->god && (sect.sct_effic < 60)) {
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pr(
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"That airport still under construction!\n");
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continue;
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}
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}
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break;
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}
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}
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if (trade.trd_type == EF_LAND){
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while (1) {
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p = getstring("Destination sector: ", buf);
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if (!trade_check_ok(lotno, &trade, &tg))
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return RET_FAIL;
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if (p == 0) {
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return RET_FAIL;
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}
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if (!sarg_xy(p, &sx, &sy) ||
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!getsect(sx, sy, §)) {
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pr("Bad sector designation; try again!\n");
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continue;
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}
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if (!player->owner) {
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pr("You don't own that sector; try again!\n");
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continue;
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}
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if (!player->god && (sect.sct_type != SCT_HEADQ)) {
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pr("Destination sector is not a headquarters!\n");
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continue;
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}
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if (!player->god && (sect.sct_effic < 60)) {
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pr("That headquarters still under construction!\n");
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continue;
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}
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break;
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}
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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 = getstring("How much do you bid: ", buf)) == 0 || *p == 0)
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return RET_OK;
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if (!trade_check_ok(lotno, &trade, &tg))
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return RET_FAIL;
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bid = atoi(p);
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if (bid < price)
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bid = price;
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if (bid > canspend) {
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pr("You don't have %.2f to spend!\n", price);
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return RET_OK;
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}
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if (bid > trade.trd_maxprice) {
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/* Add five minutes to the time if less than 5 minutes left. */
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time(&now);
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if (((TRADE_DELAY - (now - trade.trd_markettime)) < 300) &&
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trade.trd_maxbidder != player->cnum)
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trade.trd_markettime += 300;
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trade.trd_maxprice = bid;
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trade.trd_maxbidder = player->cnum;
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trade.trd_x = sx;
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trade.trd_y = sy;
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pr("Your bid on lot #%d is being considered.\n",lotno);
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if (!puttrade(lotno, &trade))
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pr("Problems with the trade file. Get help\n");
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} else
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pr("Your bid wasn't high enough (you need to bid more than someone else.)\n");
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check_trade();
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return RET_OK;
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}
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int
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check_trade(void)
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{
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int n;
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int j;
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extern double tradetax;
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struct nstr_item ni;
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struct plnstr plane;
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struct lndstr land;
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struct natstr *natp;
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struct trdstr trade;
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union trdgenstr tg;
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time_t now;
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double subleft;
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double monleft;
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double tleft;
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float price;
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int saveid;
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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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/* logerror("Checking the trades.\n");*/
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for (n = 0; gettrade(n, &trade); n++) {
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if (trade.trd_unitid < 0)
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continue;
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if (!trade_getitem(&trade, &tg))
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continue;
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if (tg.gen.trg_own == 0) {
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trade.trd_unitid = -1;
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puttrade(n, &trade);
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continue;
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}
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if (tg.gen.trg_own != trade.trd_owner) {
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logerror("SOmething weird, tg.gen.trg_own != trade.trd_owner!\n");
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trade.trd_unitid = -1;
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puttrade(n, &trade);
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continue;
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}
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if (trade.trd_owner == trade.trd_maxbidder)
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continue;
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(void) time(&now);
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tleft = TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
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if (tleft < 0.0)
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tleft = 0.0;
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if (tleft > 0.0)
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continue;
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saveid = trade.trd_unitid;
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trade.trd_unitid = -1;
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if (!puttrade(n, &trade)) {
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logerror("Couldn't save trade after purchase; get help!\n");
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continue;
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}
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monleft = 0;
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price = trade.trd_maxprice;
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natp = getnatp(trade.trd_maxbidder);
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if (natp->nat_money <= 0)
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monleft = price;
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if (natp->nat_money < price && natp->nat_money > 0) {
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monleft = price - (natp->nat_money - 1);
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natp->nat_money = 1;
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price = price - monleft;
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} else if (natp->nat_money > 0) {
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monleft = 0;
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natp->nat_money -= price;
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}
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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 && natp->nat_money > 0) {
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if ((float)((float)price / (float)(price + monleft)) < 0.1) {
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wu(0, trade.trd_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(trade.trd_maxbidder);
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outstanding = get_outstand(trade.trd_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 = trade.trd_owner;
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loan.l_lonee = trade.trd_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(trade.trd_maxbidder,N_FIN_TROUBLE, trade.trd_owner, 1);
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wu(0, trade.trd_maxbidder, "You just took loan #%d for $%.2f to cover the cost of your purchase.\n", j, (float)loan.l_amtdue);
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wu(0, trade.trd_owner, "You just extended loan #%d to %s to help with the purchase cost.\n", j, cname(trade.trd_maxbidder));
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} else {
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nreport(trade.trd_maxbidder,N_CREDIT_JUNK, trade.trd_owner, 1);
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wu(0, trade.trd_maxbidder, "You don't have enough credit to get a loan.\n");
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wu(0, trade.trd_owner, "You just turned down a loan to %s.\n", cname(trade.trd_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(trade.trd_maxbidder, N_WELCH_DEAL, trade.trd_owner, 1);
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wu(0, trade.trd_owner, "%s tried to buy a %s #%d from you for $%.2f\n",
|
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cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
|
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saveid, (float)(price * tradetax));
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wu(0, trade.trd_owner, " but couldn't afford it.\n");
|
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wu(0, trade.trd_owner, " Your item was taken off the market.\n");
|
||||
wu(0, trade.trd_maxbidder,
|
||||
"You tried to buy %s #%d from %s for $%.2f\n",
|
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trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
|
||||
(float)(price * tradetax));
|
||||
wu(0, trade.trd_maxbidder, "but couldn't afford it.\n");
|
||||
continue;
|
||||
}
|
||||
|
||||
/* If we get this far, the sale will go through. */
|
||||
/* Only pay tax on the part you actually get cash for. As a break,
|
||||
we don't tax the part you have to give a loan on. */
|
||||
|
||||
putnat(natp);
|
||||
natp = getnatp(trade.trd_owner);
|
||||
/* Make sure we subtract the extra amount */
|
||||
natp->nat_money += (roundavg(price * tradetax) - subleft);
|
||||
putnat(natp);
|
||||
switch (trade.trd_type) {
|
||||
case EF_NUKE:
|
||||
tg.nuk.nuk_x = trade.trd_x;
|
||||
tg.nuk.nuk_y = trade.trd_y;
|
||||
makelost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid, tg.nuk.nuk_x, tg.nuk.nuk_y);
|
||||
tg.nuk.nuk_own = trade.trd_maxbidder;
|
||||
makenotlost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid, tg.nuk.nuk_x, tg.nuk.nuk_y);
|
||||
break;
|
||||
case EF_PLANE:
|
||||
if ((tg.pln.pln_flags & PLN_LAUNCHED) == 0) {
|
||||
tg.pln.pln_x = trade.trd_x;
|
||||
tg.pln.pln_y = trade.trd_y;
|
||||
}
|
||||
makelost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid, tg.pln.pln_x, tg.pln.pln_y);
|
||||
tg.pln.pln_own = trade.trd_maxbidder;
|
||||
makenotlost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid, tg.pln.pln_x, tg.pln.pln_y);
|
||||
tg.pln.pln_wing = ' ';
|
||||
/* no cheap version of fly */
|
||||
if (opt_MOB_ACCESS) {
|
||||
tg.pln.pln_mobil = -(etu_per_update / sect_mob_neg_factor);
|
||||
} else {
|
||||
tg.pln.pln_mobil = 0;
|
||||
}
|
||||
tg.pln.pln_mission = 0;
|
||||
tg.pln.pln_harden = 0;
|
||||
time(&tg.pln.pln_access);
|
||||
tg.pln.pln_ship = -1;
|
||||
tg.pln.pln_land = -1;
|
||||
break;
|
||||
case EF_SHIP:
|
||||
takeover_ship(&tg.shp, trade.trd_maxbidder, 0);
|
||||
break;
|
||||
case EF_LAND:
|
||||
tg.lnd.lnd_x = trade.trd_x;
|
||||
tg.lnd.lnd_y = trade.trd_y;
|
||||
if (tg.lnd.lnd_ship >= 0){
|
||||
struct shpstr ship;
|
||||
getship(tg.lnd.lnd_ship, &ship);
|
||||
ship.shp_nland--;
|
||||
putship(ship.shp_uid,&ship);
|
||||
}
|
||||
makelost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid, tg.lnd.lnd_x, tg.lnd.lnd_y);
|
||||
tg.lnd.lnd_own = trade.trd_maxbidder;
|
||||
makenotlost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid, tg.lnd.lnd_x, tg.lnd.lnd_y);
|
||||
tg.lnd.lnd_army = ' ';
|
||||
/* no cheap version of fly */
|
||||
if (opt_MOB_ACCESS) {
|
||||
tg.lnd.lnd_mobil = -(etu_per_update / sect_mob_neg_factor);
|
||||
} else {
|
||||
tg.lnd.lnd_mobil = 0;
|
||||
}
|
||||
tg.lnd.lnd_harden = 0;
|
||||
time(&tg.lnd.lnd_access);
|
||||
tg.lnd.lnd_mission = 0;
|
||||
/* Drop any land units this unit was carrying */
|
||||
snxtitem_xy(&ni, EF_LAND, tg.lnd.lnd_x, tg.lnd.lnd_y);
|
||||
while (nxtitem(&ni, (s_char *)&land)) {
|
||||
if (land.lnd_land != tg.lnd.lnd_uid)
|
||||
continue;
|
||||
land.lnd_land = -1;
|
||||
wu(0, land.lnd_own, "unit #%d dropped in %s\n",
|
||||
land.lnd_uid,
|
||||
xyas(land.lnd_x, land.lnd_y, land.lnd_own));
|
||||
putland(land.lnd_uid, &land);
|
||||
}
|
||||
/* Drop any planes this unit was carrying */
|
||||
snxtitem_xy(&ni, EF_PLANE, tg.lnd.lnd_x, tg.lnd.lnd_y);
|
||||
while (nxtitem(&ni, (s_char *)&plane)) {
|
||||
if (plane.pln_flags & PLN_LAUNCHED)
|
||||
continue;
|
||||
if (plane.pln_land != land.lnd_uid)
|
||||
continue;
|
||||
plane.pln_land = -1;
|
||||
wu(0, plane.pln_own, "plane #%d dropped in %s\n",
|
||||
plane.pln_uid,
|
||||
xyas(plane.pln_x, plane.pln_y, plane.pln_own));
|
||||
putplane(plane.pln_uid, &plane);
|
||||
}
|
||||
tg.lnd.lnd_ship = -1;
|
||||
tg.lnd.lnd_land = -1;
|
||||
break;
|
||||
default:
|
||||
logerror("Bad trade type %d in trade\n", trade.trd_type);
|
||||
break;
|
||||
}
|
||||
if (!ef_write(trade.trd_type, saveid, (char *)&tg)) {
|
||||
logerror("Couldn't write unit to disk; seek help.\n");
|
||||
continue;
|
||||
}
|
||||
nreport(trade.trd_owner, N_MAKE_SALE, trade.trd_maxbidder, 1);
|
||||
wu(0, trade.trd_owner, "%s bought a %s #%d from you for $%.2f\n",
|
||||
cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
|
||||
saveid, (float)(price * tradetax));
|
||||
wu(0, trade.trd_maxbidder,
|
||||
"The bidding is over & you bought %s #%d from %s for $%.2f\n",
|
||||
trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
|
||||
(float)price);
|
||||
}
|
||||
/* logerror("Done checking the trades.\n");*/
|
||||
return RET_OK;
|
||||
}
|
||||
|
||||
int
|
||||
ontradingblock(int type, int *ptr)
|
||||
/* Generic pointer */
|
||||
{
|
||||
struct trdstr trade;
|
||||
union trdgenstr tg;
|
||||
int n;
|
||||
|
||||
for (n = 0; gettrade(n, &trade); n++) {
|
||||
if (trade.trd_unitid < 0)
|
||||
continue;
|
||||
if (!trade_getitem(&trade, &tg))
|
||||
continue;
|
||||
if (trade.trd_type != type)
|
||||
continue;
|
||||
if (tg.gen.trg_uid == ((struct genstr *)ptr)->trg_uid)
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
trdswitchown(int type, int *ptr, int newown)
|
||||
/* Generic pointer */
|
||||
{
|
||||
struct trdstr trade;
|
||||
union trdgenstr tg;
|
||||
int n;
|
||||
|
||||
for (n = 0; gettrade(n, &trade); n++) {
|
||||
if (trade.trd_unitid < 0)
|
||||
continue;
|
||||
if (!trade_getitem(&trade, &tg))
|
||||
continue;
|
||||
if (trade.trd_type != type)
|
||||
continue;
|
||||
if (tg.gen.trg_uid != ((struct genstr *)ptr)->trg_uid)
|
||||
continue;
|
||||
if (trade.trd_owner == trade.trd_maxbidder)
|
||||
trade.trd_maxbidder = newown;
|
||||
trade.trd_owner = newown;
|
||||
if (newown == 0)
|
||||
trade.trd_unitid = -1;
|
||||
puttrade(n, &trade);
|
||||
return;
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue