2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2000, 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
53 #include "commodity.h"
58 extern int sect_mob_neg_factor;
59 extern int etu_per_update;
60 extern int TRADE_DELAY;
81 extern double tradetax;
93 pr("The market is disabled.\n");
96 /* First, we execute all trades, so that we can only buy what is available. */
100 pr("\n Empire Trade Report\n ");
103 pr(" lot high bid by time left owner description\n");
104 pr(" --- -------- -- --------- ----- -------------------------\n");
106 snxtitem_all(&ni, EF_TRADE);
107 while (nxtitem(&ni, (char *)&trade)) {
108 if (trade.trd_unitid < 0)
110 if (!trade_getitem(&trade, &tg)) {
113 /* fix up database if things get weird */
114 /*if (trade.trd_owner != tg.gen.trg_own) {
115 trade.trd_unitid = -1;
116 (void) puttrade(ni.cur, &trade);
122 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
125 pr("$%7d %2d %5.2f hrs ", trade.trd_maxprice,
126 trade.trd_maxbidder, tleft);
127 (void)trade_desc(&trade, &tg); /* XXX */
129 if (trade.trd_owner == player->cnum && !player->god)
130 pr(" (your own lot)\n");
134 pr("Nothing to buy at the moment...\n");
137 if ((p = getstring("Which lot to buy: ", buf)) == 0 || *p == 0)
139 if (isdigit(*p) == 0)
142 if (lotno < 0 || lotno >= ni.cur) {
143 pr("Bad lot number\n");
146 if (!gettrade(lotno, &trade)) {
147 pr("No such lot number\n");
150 if (trade.trd_unitid < 0) {
151 pr("Invalid lot number.\n");
154 if (!trade_getitem(&trade, &tg)) {
155 pr("Can't find trade #%d!\n", trade.trd_unitid);
156 trade.trd_unitid = -1;
157 if (!puttrade(lotno, &trade)) {
158 pr("Couldn't save after getitem failed; get help!\n");
163 switch (trade.trd_type) {
166 if (!getsect(tg.gen.trg_x, tg.gen.trg_y, §)) {
169 trade.trd_owner = sect.sct_own;
177 pr("Bad unit type on lot number %d\n", lotno);
180 if (trade.trd_owner == player->cnum) {
181 pr("You can't buy from yourself!\n");
184 price = trade.trd_maxprice;
185 natp = getnatp(player->cnum);
186 if (natp->nat_money < price) {
187 pr("You don't have %.2f to spend!\n", price);
191 for (q = 0; gettrade(q, &tmpt); q++) {
192 if (tmpt.trd_maxbidder == player->cnum &&
193 tmpt.trd_unitid >= 0 && tmpt.trd_owner != player->cnum) {
194 tally += tmpt.trd_maxprice * tradetax;
197 for (q = 0; getcomm(q, &comt); q++) {
198 if (comt.com_maxbidder == player->cnum &&
199 comt.com_owner != 0 && comt.com_owner != player->cnum) {
200 tally += (comt.com_maxprice * comt.com_amount) * buytax;
203 canspend = natp->nat_money - tally;
205 * Find the destination sector for the plane before the trade
206 * is actually made. Must be owned (except for satellites) and
207 * must be a 60% airfield (except for VTOL planes).
209 if (((trade.trd_type == EF_PLANE) || (trade.trd_type == EF_NUKE))
210 && ((trade.trd_type == EF_NUKE) ||
211 !(tg.pln.pln_flags & PLN_LAUNCHED))) {
212 plflags = plchr[(int)tg.pln.pln_type].pl_flags;
214 p = getstring("Destination sector: ", buf);
215 if (!trade_check_ok(lotno, &trade, &tg))
220 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
221 pr("Bad sector designation; try again!\n");
224 if (!player->owner && !(plflags & P_O)) {
225 pr("You don't own that sector; try again!\n");
228 if (!(plflags & (P_V | P_O))) {
229 if (!player->god && (sect.sct_type != SCT_AIRPT)) {
230 pr("Destination sector is not an airfield!\n");
233 if (!player->god && (sect.sct_effic < 60)) {
234 pr("That airport still under construction!\n");
241 if (trade.trd_type == EF_LAND) {
243 p = getstring("Destination sector: ", buf);
244 if (!trade_check_ok(lotno, &trade, &tg))
249 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
250 pr("Bad sector designation; try again!\n");
253 if (!player->owner) {
254 pr("You don't own that sector; try again!\n");
257 if (!player->god && (sect.sct_type != SCT_HEADQ)) {
258 pr("Destination sector is not a headquarters!\n");
261 if (!player->god && (sect.sct_effic < 60)) {
262 pr("That headquarters still under construction!\n");
269 pr("WARNING! This market issues credit. If you make more\n");
270 pr(" bids than your treasury can cover at the time of sale,\n");
271 pr(" you can potentially go into financial ruin, and see no\n");
272 pr(" gains. You have been warned.\n\n");
274 if ((p = getstring("How much do you bid: ", buf)) == 0 || *p == 0)
276 if (!trade_check_ok(lotno, &trade, &tg))
281 if (bid > canspend) {
282 pr("You don't have %.2f to spend!\n", price);
285 if (bid > trade.trd_maxprice) {
286 /* Add five minutes to the time if less than 5 minutes left. */
288 if (((TRADE_DELAY - (now - trade.trd_markettime)) < 300) &&
289 trade.trd_maxbidder != player->cnum)
290 trade.trd_markettime += 300;
291 trade.trd_maxprice = bid;
292 trade.trd_maxbidder = player->cnum;
295 pr("Your bid on lot #%d is being considered.\n", lotno);
296 if (!puttrade(lotno, &trade))
297 pr("Problems with the trade file. Get help\n");
299 pr("Your bid wasn't high enough (you need to bid more than someone else.)\n");
311 extern double tradetax;
325 long outstanding; /* Outstanding debt */
326 long couval; /* Value of country's goods */
329 /* logerror("Checking the trades.\n");*/
330 for (n = 0; gettrade(n, &trade); n++) {
331 if (trade.trd_unitid < 0)
333 if (!trade_getitem(&trade, &tg))
335 if (tg.gen.trg_own == 0) {
336 trade.trd_unitid = -1;
340 if (tg.gen.trg_own != trade.trd_owner) {
342 ("SOmething weird, tg.gen.trg_own != trade.trd_owner!\n");
343 trade.trd_unitid = -1;
348 if (trade.trd_owner == trade.trd_maxbidder)
353 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
359 saveid = trade.trd_unitid;
360 trade.trd_unitid = -1;
361 if (!puttrade(n, &trade)) {
362 logerror("Couldn't save trade after purchase; get help!\n");
367 price = trade.trd_maxprice;
368 natp = getnatp(trade.trd_maxbidder);
369 if (natp->nat_money <= 0)
371 if (natp->nat_money < price && natp->nat_money > 0) {
372 monleft = price - (natp->nat_money - 1);
374 price = price - monleft;
375 } else if (natp->nat_money > 0) {
377 natp->nat_money -= price;
383 /* Try to make a loan for the rest from the owner. */
384 if (monleft > 0 && natp->nat_money > 0) {
385 if ((float)((float)price / (float)(price + monleft)) < 0.1) {
386 wu(0, trade.trd_maxbidder,
387 "You need at least 10 percent down to purchase something on credit.\n");
389 couval = get_couval(trade.trd_maxbidder);
390 outstanding = get_outstand(trade.trd_maxbidder);
391 couval = couval - outstanding;
392 if (couval > monleft) {
395 for (j = 0; getloan(j, &loan); j++) {
396 if (loan.l_status != LS_FREE)
402 ef_extend(EF_LOAN, 1);
403 loan.l_status = LS_SIGNED;
404 loan.l_loner = trade.trd_owner;
405 loan.l_lonee = trade.trd_maxbidder;
409 loan.l_amtdue = monleft;
410 time(&loan.l_lastpay);
412 (loan.l_ldur * SECS_PER_DAY) + loan.l_lastpay;
414 if (!putloan(j, &loan))
415 logerror("Error writing to the loan file.\n");
418 nreport(trade.trd_maxbidder, N_FIN_TROUBLE,
420 wu(0, trade.trd_maxbidder,
421 "You just took loan #%d for $%.2f to cover the cost of your purchase.\n",
422 j, (float)loan.l_amtdue);
423 wu(0, trade.trd_owner,
424 "You just extended loan #%d to %s to help with the purchase cost.\n",
425 j, cname(trade.trd_maxbidder));
427 nreport(trade.trd_maxbidder, N_CREDIT_JUNK,
429 wu(0, trade.trd_maxbidder,
430 "You don't have enough credit to get a loan.\n");
431 wu(0, trade.trd_owner,
432 "You just turned down a loan to %s.\n",
433 cname(trade.trd_maxbidder));
439 nreport(trade.trd_maxbidder, N_WELCH_DEAL, trade.trd_owner, 1);
440 wu(0, trade.trd_owner,
441 "%s tried to buy a %s #%d from you for $%.2f\n",
442 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
443 saveid, (float)(price * tradetax));
444 wu(0, trade.trd_owner, " but couldn't afford it.\n");
445 wu(0, trade.trd_owner,
446 " Your item was taken off the market.\n");
447 wu(0, trade.trd_maxbidder,
448 "You tried to buy %s #%d from %s for $%.2f\n",
449 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
450 (float)(price * tradetax));
451 wu(0, trade.trd_maxbidder, "but couldn't afford it.\n");
455 /* If we get this far, the sale will go through. */
456 /* Only pay tax on the part you actually get cash for. As a break,
457 we don't tax the part you have to give a loan on. */
460 natp = getnatp(trade.trd_owner);
461 /* Make sure we subtract the extra amount */
462 natp->nat_money += (roundavg(price * tradetax) - subleft);
464 switch (trade.trd_type) {
466 tg.nuk.nuk_x = trade.trd_x;
467 tg.nuk.nuk_y = trade.trd_y;
468 makelost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid, tg.nuk.nuk_x,
470 tg.nuk.nuk_own = trade.trd_maxbidder;
471 makenotlost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid,
472 tg.nuk.nuk_x, tg.nuk.nuk_y);
475 if ((tg.pln.pln_flags & PLN_LAUNCHED) == 0) {
476 tg.pln.pln_x = trade.trd_x;
477 tg.pln.pln_y = trade.trd_y;
479 makelost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
480 tg.pln.pln_x, tg.pln.pln_y);
481 tg.pln.pln_own = trade.trd_maxbidder;
482 makenotlost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
483 tg.pln.pln_x, tg.pln.pln_y);
484 tg.pln.pln_wing = ' ';
485 /* no cheap version of fly */
486 if (opt_MOB_ACCESS) {
487 tg.pln.pln_mobil = -(etu_per_update / sect_mob_neg_factor);
489 tg.pln.pln_mobil = 0;
491 tg.pln.pln_mission = 0;
492 tg.pln.pln_harden = 0;
493 time(&tg.pln.pln_access);
494 tg.pln.pln_ship = -1;
495 tg.pln.pln_land = -1;
498 takeover_ship(&tg.shp, trade.trd_maxbidder, 0);
501 tg.lnd.lnd_x = trade.trd_x;
502 tg.lnd.lnd_y = trade.trd_y;
503 if (tg.lnd.lnd_ship >= 0) {
505 getship(tg.lnd.lnd_ship, &ship);
507 putship(ship.shp_uid, &ship);
509 makelost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid, tg.lnd.lnd_x,
511 tg.lnd.lnd_own = trade.trd_maxbidder;
512 makenotlost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid,
513 tg.lnd.lnd_x, tg.lnd.lnd_y);
514 tg.lnd.lnd_army = ' ';
515 /* no cheap version of fly */
516 if (opt_MOB_ACCESS) {
517 tg.lnd.lnd_mobil = -(etu_per_update / sect_mob_neg_factor);
519 tg.lnd.lnd_mobil = 0;
521 tg.lnd.lnd_harden = 0;
522 time(&tg.lnd.lnd_access);
523 tg.lnd.lnd_mission = 0;
524 /* Drop any land units this unit was carrying */
525 snxtitem_xy(&ni, EF_LAND, tg.lnd.lnd_x, tg.lnd.lnd_y);
526 while (nxtitem(&ni, (s_char *)&land)) {
527 if (land.lnd_land != tg.lnd.lnd_uid)
530 wu(0, land.lnd_own, "unit #%d dropped in %s\n",
532 xyas(land.lnd_x, land.lnd_y, land.lnd_own));
533 putland(land.lnd_uid, &land);
535 /* Drop any planes this unit was carrying */
536 snxtitem_xy(&ni, EF_PLANE, tg.lnd.lnd_x, tg.lnd.lnd_y);
537 while (nxtitem(&ni, (s_char *)&plane)) {
538 if (plane.pln_flags & PLN_LAUNCHED)
540 if (plane.pln_land != land.lnd_uid)
543 wu(0, plane.pln_own, "plane #%d dropped in %s\n",
545 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
546 putplane(plane.pln_uid, &plane);
548 tg.lnd.lnd_ship = -1;
549 tg.lnd.lnd_land = -1;
552 logerror("Bad trade type %d in trade\n", trade.trd_type);
555 if (!ef_write(trade.trd_type, saveid, (char *)&tg)) {
556 logerror("Couldn't write unit to disk; seek help.\n");
559 nreport(trade.trd_owner, N_MAKE_SALE, trade.trd_maxbidder, 1);
560 wu(0, trade.trd_owner, "%s bought a %s #%d from you for $%.2f\n",
561 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
562 saveid, (float)(price * tradetax));
563 wu(0, trade.trd_maxbidder,
564 "The bidding is over & you bought %s #%d from %s for $%.2f\n",
565 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
568 /* logerror("Done checking the trades.\n");*/
573 ontradingblock(int type, int *ptr)
574 /* Generic pointer */
580 for (n = 0; gettrade(n, &trade); n++) {
581 if (trade.trd_unitid < 0)
583 if (!trade_getitem(&trade, &tg))
585 if (trade.trd_type != type)
587 if (tg.gen.trg_uid == ((struct genstr *)ptr)->trg_uid)
594 trdswitchown(int type, int *ptr, int newown)
595 /* Generic pointer */
601 for (n = 0; gettrade(n, &trade); n++) {
602 if (trade.trd_unitid < 0)
604 if (!trade_getitem(&trade, &tg))
606 if (trade.trd_type != type)
608 if (tg.gen.trg_uid != ((struct genstr *)ptr)->trg_uid)
610 if (trade.trd_owner == trade.trd_maxbidder)
611 trade.trd_maxbidder = newown;
612 trade.trd_owner = newown;
614 trade.trd_unitid = -1;