2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2004, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
23 * related information and legal notices. It is expected that any future
24 * projects/authors will amend these files as needed.
28 * trad.c: Buy units/ships/planes/nukes from other nations.
30 * Known contributors to this file:
33 * Steve McClure, 1996-2000
51 #include "commodity.h"
85 pr("The market is disabled.\n");
88 /* First, we execute all trades, so that we can only buy what is available. */
92 pr("\n Empire Trade Report\n ");
95 pr(" lot high bid by time left owner description\n");
96 pr(" --- -------- -- --------- ----- -------------------------\n");
98 snxtitem_all(&ni, EF_TRADE);
99 while (nxtitem(&ni, (char *)&trade)) {
100 if (trade.trd_owner == 0)
102 if (!trade_getitem(&trade, &tg)) {
105 /* fix up database if things get weird */
106 /*if (trade.trd_owner != tg.gen.trg_own) {
107 trade.trd_unitid = -1;
108 (void) puttrade(ni.cur, &trade);
114 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
117 pr("$%7ld %2d %5.2f hrs ", trade.trd_price,
118 trade.trd_maxbidder, tleft);
119 (void)trade_desc(&trade, &tg); /* XXX */
121 if (trade.trd_owner == player->cnum && !player->god)
122 pr(" (your own lot)\n");
126 pr("Nothing to buy at the moment...\n");
129 if ((p = getstring("Which lot to buy: ", buf)) == 0 || *p == 0)
131 if (isdigit(*p) == 0)
134 if (lotno < 0 || lotno >= ni.cur) {
135 pr("Bad lot number\n");
138 if (!gettrade(lotno, &trade)) {
139 pr("No such lot number\n");
142 if (trade.trd_unitid < 0) {
143 pr("Invalid lot number.\n");
146 if (!trade_getitem(&trade, &tg)) {
147 pr("Can't find trade #%d!\n", trade.trd_unitid);
148 trade.trd_unitid = -1;
149 if (!puttrade(lotno, &trade)) {
150 pr("Couldn't save after getitem failed; get help!\n");
155 switch (trade.trd_type) {
158 if (!getsect(tg.gen.trg_x, tg.gen.trg_y, §)) {
161 trade.trd_owner = sect.sct_own;
169 pr("Bad unit type on lot number %d\n", lotno);
172 if (trade.trd_owner == player->cnum) {
173 pr("You can't buy from yourself!\n");
176 price = trade.trd_price;
177 natp = getnatp(player->cnum);
178 if (natp->nat_money < price) {
179 pr("You don't have %.2f to spend!\n", price);
183 for (q = 0; gettrade(q, &tmpt); q++) {
184 if (tmpt.trd_maxbidder == player->cnum &&
185 tmpt.trd_unitid >= 0 && tmpt.trd_owner != player->cnum) {
186 tally += tmpt.trd_price * tradetax;
189 for (q = 0; getcomm(q, &comt); q++) {
190 if (comt.com_maxbidder == player->cnum &&
191 comt.com_owner != 0 && comt.com_owner != player->cnum) {
192 tally += (comt.com_price * comt.com_amount) * buytax;
195 canspend = natp->nat_money - tally;
197 * Find the destination sector for the plane before the trade
198 * is actually made. Must be owned (except for satellites) and
199 * must be a 60% airfield (except for VTOL planes).
201 if (((trade.trd_type == EF_PLANE) || (trade.trd_type == EF_NUKE))
202 && ((trade.trd_type == EF_NUKE) ||
203 !(tg.pln.pln_flags & PLN_LAUNCHED))) {
204 plflags = plchr[(int)tg.pln.pln_type].pl_flags;
206 p = getstring("Destination sector: ", buf);
207 if (!trade_check_ok(&trade, &tg))
212 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
213 pr("Bad sector designation; try again!\n");
216 if (!player->owner && !(plflags & P_O)) {
217 pr("You don't own that sector; try again!\n");
220 if (!(plflags & (P_V | P_O))) {
221 if (!player->god && (sect.sct_type != SCT_AIRPT)) {
222 pr("Destination sector is not an airfield!\n");
225 if (!player->god && (sect.sct_effic < 60)) {
226 pr("That airport still under construction!\n");
233 if (trade.trd_type == EF_LAND) {
235 p = getstring("Destination sector: ", buf);
236 if (!trade_check_ok(&trade, &tg))
241 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
242 pr("Bad sector designation; try again!\n");
245 if (!player->owner) {
246 pr("You don't own that sector; try again!\n");
249 if (!player->god && (sect.sct_type != SCT_HEADQ)) {
250 pr("Destination sector is not a headquarters!\n");
253 if (!player->god && (sect.sct_effic < 60)) {
254 pr("That headquarters still under construction!\n");
261 pr("WARNING! This market issues credit. If you make more\n");
262 pr(" bids than your treasury can cover at the time of sale,\n");
263 pr(" you can potentially go into financial ruin, and see no\n");
264 pr(" gains. You have been warned.\n\n");
266 if ((p = getstring("How much do you bid: ", buf)) == 0 || *p == 0)
268 if (!trade_check_ok(&trade, &tg))
273 if (bid > canspend) {
274 pr("You don't have %.2f to spend!\n", price);
277 if (bid > trade.trd_price) {
278 /* Add five minutes to the time if less than 5 minutes left. */
280 if (((TRADE_DELAY - (now - trade.trd_markettime)) < 300) &&
281 trade.trd_maxbidder != player->cnum)
282 trade.trd_markettime += 300;
283 trade.trd_price = bid;
284 trade.trd_maxbidder = player->cnum;
287 pr("Your bid on lot #%d is being considered.\n", lotno);
288 if (!puttrade(lotno, &trade))
289 pr("Problems with the trade file. Get help\n");
291 pr("Your bid wasn't high enough (you need to bid more than someone else.)\n");
316 long outstanding; /* Outstanding debt */
317 long couval; /* Value of country's goods */
320 /* logerror("Checking the trades.\n");*/
321 for (n = 0; gettrade(n, &trade); n++) {
322 if (trade.trd_unitid < 0)
324 if (!trade_getitem(&trade, &tg))
326 if (tg.gen.trg_own == 0) {
327 trade.trd_unitid = -1;
331 if (tg.gen.trg_own != trade.trd_owner) {
332 logerror("Something weird, tg.gen.trg_own != trade.trd_owner!\n");
333 trade.trd_unitid = -1;
338 if (trade.trd_owner == trade.trd_maxbidder)
343 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
349 saveid = trade.trd_unitid;
350 trade.trd_unitid = -1;
351 if (!puttrade(n, &trade)) {
352 logerror("Couldn't save trade after purchase; get help!\n");
357 price = trade.trd_price;
358 natp = getnatp(trade.trd_maxbidder);
359 if (natp->nat_money <= 0)
361 if (natp->nat_money < price && natp->nat_money > 0) {
362 monleft = price - (natp->nat_money - 1);
364 price = price - monleft;
365 } else if (natp->nat_money > 0) {
367 natp->nat_money -= price;
373 /* Try to make a loan for the rest from the owner. */
374 if (monleft > 0 && natp->nat_money > 0) {
375 if ((float)((float)price / (float)(price + monleft)) < 0.1) {
376 wu(0, trade.trd_maxbidder,
377 "You need at least 10 percent down to purchase something on credit.\n");
379 couval = get_couval(trade.trd_maxbidder);
380 outstanding = get_outstand(trade.trd_maxbidder);
381 couval = couval - outstanding;
382 if (couval > monleft) {
385 for (j = 0; getloan(j, &loan); j++) {
386 if (loan.l_status != LS_FREE)
392 ef_extend(EF_LOAN, 1);
393 loan.l_status = LS_SIGNED;
394 loan.l_loner = trade.trd_owner;
395 loan.l_lonee = trade.trd_maxbidder;
399 loan.l_amtdue = monleft;
400 time(&loan.l_lastpay);
402 (loan.l_ldur * SECS_PER_DAY) + loan.l_lastpay;
404 if (!putloan(j, &loan))
405 logerror("Error writing to the loan file.\n");
408 nreport(trade.trd_maxbidder, N_FIN_TROUBLE,
410 wu(0, trade.trd_maxbidder,
411 "You just took loan #%d for $%.2f to cover the cost of your purchase.\n",
412 j, (float)loan.l_amtdue);
413 wu(0, trade.trd_owner,
414 "You just extended loan #%d to %s to help with the purchase cost.\n",
415 j, cname(trade.trd_maxbidder));
417 nreport(trade.trd_maxbidder, N_CREDIT_JUNK,
419 wu(0, trade.trd_maxbidder,
420 "You don't have enough credit to get a loan.\n");
421 wu(0, trade.trd_owner,
422 "You just turned down a loan to %s.\n",
423 cname(trade.trd_maxbidder));
429 nreport(trade.trd_maxbidder, N_WELCH_DEAL, trade.trd_owner, 1);
430 wu(0, trade.trd_owner,
431 "%s tried to buy a %s #%d from you for $%.2f\n",
432 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
433 saveid, (float)(price * tradetax));
434 wu(0, trade.trd_owner, " but couldn't afford it.\n");
435 wu(0, trade.trd_owner,
436 " Your item was taken off the market.\n");
437 wu(0, trade.trd_maxbidder,
438 "You tried to buy %s #%d from %s for $%.2f\n",
439 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
440 (float)(price * tradetax));
441 wu(0, trade.trd_maxbidder, "but couldn't afford it.\n");
445 /* If we get this far, the sale will go through. */
446 /* Only pay tax on the part you actually get cash for. As a break,
447 we don't tax the part you have to give a loan on. */
450 natp = getnatp(trade.trd_owner);
451 /* Make sure we subtract the extra amount */
452 natp->nat_money += (roundavg(price * tradetax) - subleft);
454 switch (trade.trd_type) {
456 tg.nuk.nuk_x = trade.trd_x;
457 tg.nuk.nuk_y = trade.trd_y;
458 makelost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid, tg.nuk.nuk_x,
460 tg.nuk.nuk_own = trade.trd_maxbidder;
461 makenotlost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid,
462 tg.nuk.nuk_x, tg.nuk.nuk_y);
465 if ((tg.pln.pln_flags & PLN_LAUNCHED) == 0) {
466 tg.pln.pln_x = trade.trd_x;
467 tg.pln.pln_y = trade.trd_y;
469 makelost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
470 tg.pln.pln_x, tg.pln.pln_y);
471 tg.pln.pln_own = trade.trd_maxbidder;
472 makenotlost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
473 tg.pln.pln_x, tg.pln.pln_y);
474 tg.pln.pln_wing = ' ';
475 /* no cheap version of fly */
476 if (opt_MOB_ACCESS) {
477 tg.pln.pln_mobil = -(etu_per_update / sect_mob_neg_factor);
479 tg.pln.pln_mobil = 0;
481 tg.pln.pln_mission = 0;
482 tg.pln.pln_harden = 0;
483 time(&tg.pln.pln_access);
484 tg.pln.pln_ship = -1;
485 tg.pln.pln_land = -1;
488 takeover_ship(&tg.shp, trade.trd_maxbidder, 0);
491 tg.lnd.lnd_x = trade.trd_x;
492 tg.lnd.lnd_y = trade.trd_y;
493 if (tg.lnd.lnd_ship >= 0) {
495 getship(tg.lnd.lnd_ship, &ship);
497 putship(ship.shp_uid, &ship);
499 makelost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid, tg.lnd.lnd_x,
501 tg.lnd.lnd_own = trade.trd_maxbidder;
502 makenotlost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid,
503 tg.lnd.lnd_x, tg.lnd.lnd_y);
504 tg.lnd.lnd_army = ' ';
505 /* no cheap version of fly */
506 if (opt_MOB_ACCESS) {
507 tg.lnd.lnd_mobil = -(etu_per_update / sect_mob_neg_factor);
509 tg.lnd.lnd_mobil = 0;
511 tg.lnd.lnd_harden = 0;
512 time(&tg.lnd.lnd_access);
513 tg.lnd.lnd_mission = 0;
514 /* Drop any land units this unit was carrying */
515 snxtitem_xy(&ni, EF_LAND, tg.lnd.lnd_x, tg.lnd.lnd_y);
516 while (nxtitem(&ni, (s_char *)&land)) {
517 if (land.lnd_land != tg.lnd.lnd_uid)
520 wu(0, land.lnd_own, "unit #%d dropped in %s\n",
522 xyas(land.lnd_x, land.lnd_y, land.lnd_own));
523 putland(land.lnd_uid, &land);
525 /* Drop any planes this unit was carrying */
526 snxtitem_xy(&ni, EF_PLANE, tg.lnd.lnd_x, tg.lnd.lnd_y);
527 while (nxtitem(&ni, (s_char *)&plane)) {
528 if (plane.pln_flags & PLN_LAUNCHED)
530 if (plane.pln_land != land.lnd_uid)
533 wu(0, plane.pln_own, "plane #%d dropped in %s\n",
535 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
536 putplane(plane.pln_uid, &plane);
538 tg.lnd.lnd_ship = -1;
539 tg.lnd.lnd_land = -1;
542 logerror("Bad trade type %d in trade\n", trade.trd_type);
545 if (!ef_write(trade.trd_type, saveid, (char *)&tg)) {
546 logerror("Couldn't write unit to disk; seek help.\n");
549 nreport(trade.trd_owner, N_MAKE_SALE, trade.trd_maxbidder, 1);
550 wu(0, trade.trd_owner, "%s bought a %s #%d from you for $%.2f\n",
551 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
552 saveid, (float)(price * tradetax));
553 wu(0, trade.trd_maxbidder,
554 "The bidding is over & you bought %s #%d from %s for $%.2f\n",
555 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
558 /* logerror("Done checking the trades.\n");*/
563 ontradingblock(int type, int *ptr)
564 /* Generic pointer */
570 for (n = 0; gettrade(n, &trade); n++) {
571 if (trade.trd_unitid < 0)
573 if (!trade_getitem(&trade, &tg))
575 if (trade.trd_type != type)
577 if (tg.gen.trg_uid == ((struct genstr *)ptr)->trg_uid)
584 trdswitchown(int type, int *ptr, int newown)
585 /* Generic pointer */
591 for (n = 0; gettrade(n, &trade); n++) {
592 if (trade.trd_unitid < 0)
594 if (!trade_getitem(&trade, &tg))
596 if (trade.trd_type != type)
598 if (tg.gen.trg_uid != ((struct genstr *)ptr)->trg_uid)
600 if (trade.trd_owner == trade.trd_maxbidder)
601 trade.trd_maxbidder = newown;
602 trade.trd_owner = newown;
604 trade.trd_unitid = -1;