543 lines
14 KiB
C
543 lines
14 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2006, 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 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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* 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 <config.h>
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#include <ctype.h>
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#include "misc.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 "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 "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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/*
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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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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, &trade)) {
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if (trade.trd_owner == 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.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 =
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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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pr("$%7ld %2d %5.2f hrs ", trade.trd_price,
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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_price;
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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 && tmpt.trd_owner != player->cnum) {
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tally += tmpt.trd_price * 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 && comt.com_owner != player->cnum) {
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tally += (comt.com_price * 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(&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) || !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("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("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(&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) || !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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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(&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_price) {
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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_price = 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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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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/* 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.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.own != trade.trd_owner) {
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logerror("Something weird, tg.gen.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 =
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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_price;
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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 (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,
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"%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,
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" Your item was taken off the market.\n");
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wu(0, trade.trd_maxbidder,
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"You tried to buy %s #%d from %s for $%.2f\n",
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trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
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(float)(price * tradetax));
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wu(0, trade.trd_maxbidder, "but couldn't afford it.\n");
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continue;
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}
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/* If we get this far, the sale will go through. */
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/* Only pay tax on the part you actually get cash for. As a break,
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we don't tax the part you have to give a loan on. */
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putnat(natp);
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natp = getnatp(trade.trd_owner);
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/* Make sure we subtract the extra amount */
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natp->nat_money += (roundavg(price * tradetax) - subleft);
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putnat(natp);
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switch (trade.trd_type) {
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case EF_NUKE:
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tg.nuk.nuk_x = trade.trd_x;
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tg.nuk.nuk_y = trade.trd_y;
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makelost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid, tg.nuk.nuk_x,
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tg.nuk.nuk_y);
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tg.nuk.nuk_own = trade.trd_maxbidder;
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makenotlost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid,
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tg.nuk.nuk_x, tg.nuk.nuk_y);
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break;
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case EF_PLANE:
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if ((tg.pln.pln_flags & PLN_LAUNCHED) == 0) {
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tg.pln.pln_x = trade.trd_x;
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tg.pln.pln_y = trade.trd_y;
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}
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makelost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
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tg.pln.pln_x, tg.pln.pln_y);
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tg.pln.pln_own = trade.trd_maxbidder;
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makenotlost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
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tg.pln.pln_x, tg.pln.pln_y);
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tg.pln.pln_wing = ' ';
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/* no cheap version of fly */
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if (opt_MOB_ACCESS) {
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tg.pln.pln_mobil = -(etu_per_update / sect_mob_neg_factor);
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} else {
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tg.pln.pln_mobil = 0;
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}
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tg.pln.pln_mission = 0;
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tg.pln.pln_harden = 0;
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time(&tg.pln.pln_access);
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tg.pln.pln_ship = -1;
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tg.pln.pln_land = -1;
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break;
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case EF_SHIP:
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takeover_ship(&tg.shp, trade.trd_maxbidder, 0);
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break;
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case EF_LAND:
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tg.lnd.lnd_x = trade.trd_x;
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tg.lnd.lnd_y = trade.trd_y;
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if (tg.lnd.lnd_ship >= 0) {
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struct shpstr ship;
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getship(tg.lnd.lnd_ship, &ship);
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ship.shp_nland--;
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putship(ship.shp_uid, &ship);
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}
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makelost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid, tg.lnd.lnd_x,
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tg.lnd.lnd_y);
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tg.lnd.lnd_own = trade.trd_maxbidder;
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makenotlost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid,
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tg.lnd.lnd_x, tg.lnd.lnd_y);
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tg.lnd.lnd_army = ' ';
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/* no cheap version of fly */
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if (opt_MOB_ACCESS) {
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tg.lnd.lnd_mobil = -(etu_per_update / sect_mob_neg_factor);
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} else {
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tg.lnd.lnd_mobil = 0;
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}
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tg.lnd.lnd_harden = 0;
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time(&tg.lnd.lnd_access);
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tg.lnd.lnd_mission = 0;
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/* Drop any land units this unit was carrying */
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snxtitem_xy(&ni, EF_LAND, tg.lnd.lnd_x, tg.lnd.lnd_y);
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while (nxtitem(&ni, &land)) {
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if (land.lnd_land != tg.lnd.lnd_uid)
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continue;
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land.lnd_land = -1;
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wu(0, land.lnd_own, "unit #%d dropped in %s\n",
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land.lnd_uid,
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xyas(land.lnd_x, land.lnd_y, land.lnd_own));
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putland(land.lnd_uid, &land);
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}
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/* Drop any planes this unit was carrying */
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snxtitem_xy(&ni, EF_PLANE, tg.lnd.lnd_x, tg.lnd.lnd_y);
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while (nxtitem(&ni, &plane)) {
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if (plane.pln_flags & PLN_LAUNCHED)
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continue;
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if (plane.pln_land != land.lnd_uid)
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continue;
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plane.pln_land = -1;
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wu(0, plane.pln_own, "plane #%d dropped in %s\n",
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plane.pln_uid,
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xyas(plane.pln_x, plane.pln_y, plane.pln_own));
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putplane(plane.pln_uid, &plane);
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}
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tg.lnd.lnd_ship = -1;
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tg.lnd.lnd_land = -1;
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break;
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default:
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logerror("Bad trade type %d in trade\n", trade.trd_type);
|
|
break;
|
|
}
|
|
if (!ef_write(trade.trd_type, saveid, &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.uid == ((struct genitem *)ptr)->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.uid != ((struct genitem *)ptr)->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;
|
|
}
|
|
}
|