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empserver/src/lib/commands/trad.c
Markus Armbruster e7d75b2279 Use gcc function attribute `format' to catch bad format strings. Fix 
them.  From Marc Olzheim.
Type modifier 'l' was missing in many places, probably rendering the
server useless on 64-bit hosts.
(ef_flush, ef_write, ef_extend, lwpCreate, lwpDestroy): Use conversion
specifier 'p' to print pointers.
(check_market): Fix display of loan amount.
(doland): Fix unescaped '%' (undefined behavior).
(ldump, ndump, pdump, sdump): Don't use flag '0' with conversion
specifier 's' (undefined behavior).
(dump, ldump, lost, ndump, pdump, sdump, empth_create, update_sched):
Cast time_t and pthread_t to long for printing.
(lwpStackCheck, lwpStackCheckUsed, finish_sects): Insert cast to fix
argument type on all platforms.
(prod): Remove extra argument.
(perform_mission, airdamage, retreat_land1, lwpReschedule): Format
string missed arguments.
2004-03-09 12:27:40 +00:00

609 lines
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/*
* Empire - A multi-player, client/server Internet based war game.
* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---
*
* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
* related information and legal notices. It is expected that any future
* projects/authors will amend these files as needed.
*
* ---
*
* trad.c: Buy units/ships/planes/nukes from other nations.
*
* Known contributors to this file:
* Dave Pare, 1986
* Pat Loney, 1992
* Steve McClure, 1996-2000
*/
#include <ctype.h>
#include "misc.h"
#include "var.h"
#include "sect.h"
#include "nat.h"
#include "news.h"
#include "item.h"
#include "ship.h"
#include "nuke.h"
#include "land.h"
#include "plane.h"
#include "trade.h"
#include "xy.h"
#include "nsc.h"
#include "file.h"
#include "player.h"
#include "commodity.h"
#include "loan.h"
#include "commands.h"
#include "optlist.h"
/*
* format: trade
*/
int
trad(void)
{
struct sctstr sect;
struct natstr *natp;
struct comstr comt;
int lotno;
float price;
coord sx, sy;
int n;
char *p;
struct nstr_item ni;
struct trdstr trade;
struct trdstr tmpt;
union trdgenstr tg;
int plflags;
double canspend;
time_t now;
int bid;
double tleft;
double tally;
int q;
s_char buf[1024];
if (!opt_MARKET) {
pr("The market is disabled.\n");
return RET_FAIL;
}
/* First, we execute all trades, so that we can only buy what is available. */
check_market();
check_trade();
pr("\n Empire Trade Report\n ");
prdate();
n = 0;
pr(" lot high bid by time left owner description\n");
pr(" --- -------- -- --------- ----- -------------------------\n");
snxtitem_all(&ni, EF_TRADE);
while (nxtitem(&ni, (char *)&trade)) {
if (trade.trd_unitid < 0)
continue;
if (!trade_getitem(&trade, &tg)) {
continue;
};
/* fix up database if things get weird */
/*if (trade.trd_owner != tg.gen.trg_own) {
trade.trd_unitid = -1;
(void) puttrade(ni.cur, &trade);
continue;
} */
pr(" %3d ", ni.cur);
(void)time(&now);
tleft =
TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
if (tleft < 0.0)
tleft = 0.0;
pr("$%7ld %2d %5.2f hrs ", trade.trd_price,
trade.trd_maxbidder, tleft);
(void)trade_desc(&trade, &tg); /* XXX */
pr("\n");
if (trade.trd_owner == player->cnum && !player->god)
pr(" (your own lot)\n");
n++;
}
if (n == 0) {
pr("Nothing to buy at the moment...\n");
return RET_OK;
}
if ((p = getstring("Which lot to buy: ", buf)) == 0 || *p == 0)
return RET_OK;
if (isdigit(*p) == 0)
return RET_OK;
lotno = atoi(p);
if (lotno < 0 || lotno >= ni.cur) {
pr("Bad lot number\n");
return RET_OK;
}
if (!gettrade(lotno, &trade)) {
pr("No such lot number\n");
return RET_OK;
}
if (trade.trd_unitid < 0) {
pr("Invalid lot number.\n");
return RET_OK;
}
if (!trade_getitem(&trade, &tg)) {
pr("Can't find trade #%d!\n", trade.trd_unitid);
trade.trd_unitid = -1;
if (!puttrade(lotno, &trade)) {
pr("Couldn't save after getitem failed; get help!\n");
return RET_SYS;
}
return RET_OK;
}
switch (trade.trd_type) {
case EF_NUKE:
/*
if (!getsect(tg.gen.trg_x, tg.gen.trg_y, &sect)) {
return RET_FAIL;
}
trade.trd_owner = sect.sct_own;
break;
*/
case EF_PLANE:
case EF_SHIP:
case EF_LAND:
break;
default:
pr("Bad unit type on lot number %d\n", lotno);
return RET_FAIL;
}
if (trade.trd_owner == player->cnum) {
pr("You can't buy from yourself!\n");
return RET_OK;
}
price = trade.trd_price;
natp = getnatp(player->cnum);
if (natp->nat_money < price) {
pr("You don't have %.2f to spend!\n", price);
return RET_OK;
}
tally = 0.0;
for (q = 0; gettrade(q, &tmpt); q++) {
if (tmpt.trd_maxbidder == player->cnum &&
tmpt.trd_unitid >= 0 && tmpt.trd_owner != player->cnum) {
tally += tmpt.trd_price * tradetax;
}
}
for (q = 0; getcomm(q, &comt); q++) {
if (comt.com_maxbidder == player->cnum &&
comt.com_owner != 0 && comt.com_owner != player->cnum) {
tally += (comt.com_price * comt.com_amount) * buytax;
}
}
canspend = natp->nat_money - tally;
/*
* Find the destination sector for the plane before the trade
* is actually made. Must be owned (except for satellites) and
* must be a 60% airfield (except for VTOL planes).
*/
if (((trade.trd_type == EF_PLANE) || (trade.trd_type == EF_NUKE))
&& ((trade.trd_type == EF_NUKE) ||
!(tg.pln.pln_flags & PLN_LAUNCHED))) {
plflags = plchr[(int)tg.pln.pln_type].pl_flags;
while (1) {
p = getstring("Destination sector: ", buf);
if (!trade_check_ok(lotno, &trade, &tg))
return RET_FAIL;
if (p == 0) {
return RET_FAIL;
}
if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, &sect)) {
pr("Bad sector designation; try again!\n");
continue;
}
if (!player->owner && !(plflags & P_O)) {
pr("You don't own that sector; try again!\n");
continue;
}
if (!(plflags & (P_V | P_O))) {
if (!player->god && (sect.sct_type != SCT_AIRPT)) {
pr("Destination sector is not an airfield!\n");
continue;
}
if (!player->god && (sect.sct_effic < 60)) {
pr("That airport still under construction!\n");
continue;
}
}
break;
}
}
if (trade.trd_type == EF_LAND) {
while (1) {
p = getstring("Destination sector: ", buf);
if (!trade_check_ok(lotno, &trade, &tg))
return RET_FAIL;
if (p == 0) {
return RET_FAIL;
}
if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, &sect)) {
pr("Bad sector designation; try again!\n");
continue;
}
if (!player->owner) {
pr("You don't own that sector; try again!\n");
continue;
}
if (!player->god && (sect.sct_type != SCT_HEADQ)) {
pr("Destination sector is not a headquarters!\n");
continue;
}
if (!player->god && (sect.sct_effic < 60)) {
pr("That headquarters still under construction!\n");
continue;
}
break;
}
}
pr("WARNING! This market issues credit. If you make more\n");
pr(" bids than your treasury can cover at the time of sale,\n");
pr(" you can potentially go into financial ruin, and see no\n");
pr(" gains. You have been warned.\n\n");
if ((p = getstring("How much do you bid: ", buf)) == 0 || *p == 0)
return RET_OK;
if (!trade_check_ok(lotno, &trade, &tg))
return RET_FAIL;
bid = atoi(p);
if (bid < price)
bid = price;
if (bid > canspend) {
pr("You don't have %.2f to spend!\n", price);
return RET_OK;
}
if (bid > trade.trd_price) {
/* Add five minutes to the time if less than 5 minutes left. */
time(&now);
if (((TRADE_DELAY - (now - trade.trd_markettime)) < 300) &&
trade.trd_maxbidder != player->cnum)
trade.trd_markettime += 300;
trade.trd_price = bid;
trade.trd_maxbidder = player->cnum;
trade.trd_x = sx;
trade.trd_y = sy;
pr("Your bid on lot #%d is being considered.\n", lotno);
if (!puttrade(lotno, &trade))
pr("Problems with the trade file. Get help\n");
} else
pr("Your bid wasn't high enough (you need to bid more than someone else.)\n");
check_trade();
return RET_OK;
}
int
check_trade(void)
{
int n;
int j;
struct nstr_item ni;
struct plnstr plane;
struct lndstr land;
struct natstr *natp;
struct trdstr trade;
union trdgenstr tg;
time_t now;
double subleft;
double monleft;
double tleft;
float price;
int saveid;
struct lonstr loan;
long outstanding; /* Outstanding debt */
long couval; /* Value of country's goods */
int foundloan;
/* logerror("Checking the trades.\n");*/
for (n = 0; gettrade(n, &trade); n++) {
if (trade.trd_unitid < 0)
continue;
if (!trade_getitem(&trade, &tg))
continue;
if (tg.gen.trg_own == 0) {
trade.trd_unitid = -1;
puttrade(n, &trade);
continue;
}
if (tg.gen.trg_own != trade.trd_owner) {
logerror("Something weird, tg.gen.trg_own != trade.trd_owner!\n");
trade.trd_unitid = -1;
puttrade(n, &trade);
continue;
}
if (trade.trd_owner == trade.trd_maxbidder)
continue;
(void)time(&now);
tleft =
TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
if (tleft < 0.0)
tleft = 0.0;
if (tleft > 0.0)
continue;
saveid = trade.trd_unitid;
trade.trd_unitid = -1;
if (!puttrade(n, &trade)) {
logerror("Couldn't save trade after purchase; get help!\n");
continue;
}
monleft = 0;
price = trade.trd_price;
natp = getnatp(trade.trd_maxbidder);
if (natp->nat_money <= 0)
monleft = price;
if (natp->nat_money < price && natp->nat_money > 0) {
monleft = price - (natp->nat_money - 1);
natp->nat_money = 1;
price = price - monleft;
} else if (natp->nat_money > 0) {
monleft = 0;
natp->nat_money -= price;
}
subleft = monleft;
if (opt_LOANS) {
/* Try to make a loan for the rest from the owner. */
if (monleft > 0 && natp->nat_money > 0) {
if ((float)((float)price / (float)(price + monleft)) < 0.1) {
wu(0, trade.trd_maxbidder,
"You need at least 10 percent down to purchase something on credit.\n");
} else {
couval = get_couval(trade.trd_maxbidder);
outstanding = get_outstand(trade.trd_maxbidder);
couval = couval - outstanding;
if (couval > monleft) {
/* Make the loan */
foundloan = 0;
for (j = 0; getloan(j, &loan); j++) {
if (loan.l_status != LS_FREE)
continue;
foundloan = 1;
break;
}
if (!foundloan)
ef_extend(EF_LOAN, 1);
loan.l_status = LS_SIGNED;
loan.l_loner = trade.trd_owner;
loan.l_lonee = trade.trd_maxbidder;
loan.l_irate = 25;
loan.l_ldur = 4;
loan.l_amtpaid = 0;
loan.l_amtdue = monleft;
time(&loan.l_lastpay);
loan.l_duedate =
(loan.l_ldur * SECS_PER_DAY) + loan.l_lastpay;
loan.l_uid = j;
if (!putloan(j, &loan))
logerror("Error writing to the loan file.\n");
else
monleft = 0;
nreport(trade.trd_maxbidder, N_FIN_TROUBLE,
trade.trd_owner, 1);
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);
wu(0, trade.trd_owner,
"You just extended loan #%d to %s to help with the purchase cost.\n",
j, cname(trade.trd_maxbidder));
} else {
nreport(trade.trd_maxbidder, N_CREDIT_JUNK,
trade.trd_owner, 1);
wu(0, trade.trd_maxbidder,
"You don't have enough credit to get a loan.\n");
wu(0, trade.trd_owner,
"You just turned down a loan to %s.\n",
cname(trade.trd_maxbidder));
}
}
}
}
if (monleft > 0) {
nreport(trade.trd_maxbidder, N_WELCH_DEAL, trade.trd_owner, 1);
wu(0, trade.trd_owner,
"%s tried to buy a %s #%d from you for $%.2f\n",
cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
saveid, (float)(price * tradetax));
wu(0, trade.trd_owner, " but couldn't afford it.\n");
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",
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;
}
}
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