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"
87 pr("The market is disabled.\n");
90 /* First, we execute all trades, so that we can only buy what is available. */
94 pr("\n Empire Trade Report\n ");
97 pr(" lot high bid by time left owner description\n");
98 pr(" --- -------- -- --------- ----- -------------------------\n");
100 snxtitem_all(&ni, EF_TRADE);
101 while (nxtitem(&ni, (char *)&trade)) {
102 if (trade.trd_unitid < 0)
104 if (!trade_getitem(&trade, &tg)) {
107 /* fix up database if things get weird */
108 /*if (trade.trd_owner != tg.gen.trg_own) {
109 trade.trd_unitid = -1;
110 (void) puttrade(ni.cur, &trade);
116 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
119 pr("$%7d %2d %5.2f hrs ", trade.trd_maxprice,
120 trade.trd_maxbidder, tleft);
121 (void)trade_desc(&trade, &tg); /* XXX */
123 if (trade.trd_owner == player->cnum && !player->god)
124 pr(" (your own lot)\n");
128 pr("Nothing to buy at the moment...\n");
131 if ((p = getstring("Which lot to buy: ", buf)) == 0 || *p == 0)
133 if (isdigit(*p) == 0)
136 if (lotno < 0 || lotno >= ni.cur) {
137 pr("Bad lot number\n");
140 if (!gettrade(lotno, &trade)) {
141 pr("No such lot number\n");
144 if (trade.trd_unitid < 0) {
145 pr("Invalid lot number.\n");
148 if (!trade_getitem(&trade, &tg)) {
149 pr("Can't find trade #%d!\n", trade.trd_unitid);
150 trade.trd_unitid = -1;
151 if (!puttrade(lotno, &trade)) {
152 pr("Couldn't save after getitem failed; get help!\n");
157 switch (trade.trd_type) {
160 if (!getsect(tg.gen.trg_x, tg.gen.trg_y, §)) {
163 trade.trd_owner = sect.sct_own;
171 pr("Bad unit type on lot number %d\n", lotno);
174 if (trade.trd_owner == player->cnum) {
175 pr("You can't buy from yourself!\n");
178 price = trade.trd_maxprice;
179 natp = getnatp(player->cnum);
180 if (natp->nat_money < price) {
181 pr("You don't have %.2f to spend!\n", price);
185 for (q = 0; gettrade(q, &tmpt); q++) {
186 if (tmpt.trd_maxbidder == player->cnum &&
187 tmpt.trd_unitid >= 0 && tmpt.trd_owner != player->cnum) {
188 tally += tmpt.trd_maxprice * tradetax;
191 for (q = 0; getcomm(q, &comt); q++) {
192 if (comt.com_maxbidder == player->cnum &&
193 comt.com_owner != 0 && comt.com_owner != player->cnum) {
194 tally += (comt.com_maxprice * comt.com_amount) * buytax;
197 canspend = natp->nat_money - tally;
199 * Find the destination sector for the plane before the trade
200 * is actually made. Must be owned (except for satellites) and
201 * must be a 60% airfield (except for VTOL planes).
203 if (((trade.trd_type == EF_PLANE) || (trade.trd_type == EF_NUKE))
204 && ((trade.trd_type == EF_NUKE) ||
205 !(tg.pln.pln_flags & PLN_LAUNCHED))) {
206 plflags = plchr[(int)tg.pln.pln_type].pl_flags;
208 p = getstring("Destination sector: ", buf);
209 if (!trade_check_ok(lotno, &trade, &tg))
214 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
215 pr("Bad sector designation; try again!\n");
218 if (!player->owner && !(plflags & P_O)) {
219 pr("You don't own that sector; try again!\n");
222 if (!(plflags & (P_V | P_O))) {
223 if (!player->god && (sect.sct_type != SCT_AIRPT)) {
224 pr("Destination sector is not an airfield!\n");
227 if (!player->god && (sect.sct_effic < 60)) {
228 pr("That airport still under construction!\n");
235 if (trade.trd_type == EF_LAND) {
237 p = getstring("Destination sector: ", buf);
238 if (!trade_check_ok(lotno, &trade, &tg))
243 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
244 pr("Bad sector designation; try again!\n");
247 if (!player->owner) {
248 pr("You don't own that sector; try again!\n");
251 if (!player->god && (sect.sct_type != SCT_HEADQ)) {
252 pr("Destination sector is not a headquarters!\n");
255 if (!player->god && (sect.sct_effic < 60)) {
256 pr("That headquarters still under construction!\n");
263 pr("WARNING! This market issues credit. If you make more\n");
264 pr(" bids than your treasury can cover at the time of sale,\n");
265 pr(" you can potentially go into financial ruin, and see no\n");
266 pr(" gains. You have been warned.\n\n");
268 if ((p = getstring("How much do you bid: ", buf)) == 0 || *p == 0)
270 if (!trade_check_ok(lotno, &trade, &tg))
275 if (bid > canspend) {
276 pr("You don't have %.2f to spend!\n", price);
279 if (bid > trade.trd_maxprice) {
280 /* Add five minutes to the time if less than 5 minutes left. */
282 if (((TRADE_DELAY - (now - trade.trd_markettime)) < 300) &&
283 trade.trd_maxbidder != player->cnum)
284 trade.trd_markettime += 300;
285 trade.trd_maxprice = bid;
286 trade.trd_maxbidder = player->cnum;
289 pr("Your bid on lot #%d is being considered.\n", lotno);
290 if (!puttrade(lotno, &trade))
291 pr("Problems with the trade file. Get help\n");
293 pr("Your bid wasn't high enough (you need to bid more than someone else.)\n");
318 long outstanding; /* Outstanding debt */
319 long couval; /* Value of country's goods */
322 /* logerror("Checking the trades.\n");*/
323 for (n = 0; gettrade(n, &trade); n++) {
324 if (trade.trd_unitid < 0)
326 if (!trade_getitem(&trade, &tg))
328 if (tg.gen.trg_own == 0) {
329 trade.trd_unitid = -1;
333 if (tg.gen.trg_own != trade.trd_owner) {
335 ("SOmething weird, tg.gen.trg_own != trade.trd_owner!\n");
336 trade.trd_unitid = -1;
341 if (trade.trd_owner == trade.trd_maxbidder)
346 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
352 saveid = trade.trd_unitid;
353 trade.trd_unitid = -1;
354 if (!puttrade(n, &trade)) {
355 logerror("Couldn't save trade after purchase; get help!\n");
360 price = trade.trd_maxprice;
361 natp = getnatp(trade.trd_maxbidder);
362 if (natp->nat_money <= 0)
364 if (natp->nat_money < price && natp->nat_money > 0) {
365 monleft = price - (natp->nat_money - 1);
367 price = price - monleft;
368 } else if (natp->nat_money > 0) {
370 natp->nat_money -= price;
376 /* Try to make a loan for the rest from the owner. */
377 if (monleft > 0 && natp->nat_money > 0) {
378 if ((float)((float)price / (float)(price + monleft)) < 0.1) {
379 wu(0, trade.trd_maxbidder,
380 "You need at least 10 percent down to purchase something on credit.\n");
382 couval = get_couval(trade.trd_maxbidder);
383 outstanding = get_outstand(trade.trd_maxbidder);
384 couval = couval - outstanding;
385 if (couval > monleft) {
388 for (j = 0; getloan(j, &loan); j++) {
389 if (loan.l_status != LS_FREE)
395 ef_extend(EF_LOAN, 1);
396 loan.l_status = LS_SIGNED;
397 loan.l_loner = trade.trd_owner;
398 loan.l_lonee = trade.trd_maxbidder;
402 loan.l_amtdue = monleft;
403 time(&loan.l_lastpay);
405 (loan.l_ldur * SECS_PER_DAY) + loan.l_lastpay;
407 if (!putloan(j, &loan))
408 logerror("Error writing to the loan file.\n");
411 nreport(trade.trd_maxbidder, N_FIN_TROUBLE,
413 wu(0, trade.trd_maxbidder,
414 "You just took loan #%d for $%.2f to cover the cost of your purchase.\n",
415 j, (float)loan.l_amtdue);
416 wu(0, trade.trd_owner,
417 "You just extended loan #%d to %s to help with the purchase cost.\n",
418 j, cname(trade.trd_maxbidder));
420 nreport(trade.trd_maxbidder, N_CREDIT_JUNK,
422 wu(0, trade.trd_maxbidder,
423 "You don't have enough credit to get a loan.\n");
424 wu(0, trade.trd_owner,
425 "You just turned down a loan to %s.\n",
426 cname(trade.trd_maxbidder));
432 nreport(trade.trd_maxbidder, N_WELCH_DEAL, trade.trd_owner, 1);
433 wu(0, trade.trd_owner,
434 "%s tried to buy a %s #%d from you for $%.2f\n",
435 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
436 saveid, (float)(price * tradetax));
437 wu(0, trade.trd_owner, " but couldn't afford it.\n");
438 wu(0, trade.trd_owner,
439 " Your item was taken off the market.\n");
440 wu(0, trade.trd_maxbidder,
441 "You tried to buy %s #%d from %s for $%.2f\n",
442 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
443 (float)(price * tradetax));
444 wu(0, trade.trd_maxbidder, "but couldn't afford it.\n");
448 /* If we get this far, the sale will go through. */
449 /* Only pay tax on the part you actually get cash for. As a break,
450 we don't tax the part you have to give a loan on. */
453 natp = getnatp(trade.trd_owner);
454 /* Make sure we subtract the extra amount */
455 natp->nat_money += (roundavg(price * tradetax) - subleft);
457 switch (trade.trd_type) {
459 tg.nuk.nuk_x = trade.trd_x;
460 tg.nuk.nuk_y = trade.trd_y;
461 makelost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid, tg.nuk.nuk_x,
463 tg.nuk.nuk_own = trade.trd_maxbidder;
464 makenotlost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid,
465 tg.nuk.nuk_x, tg.nuk.nuk_y);
468 if ((tg.pln.pln_flags & PLN_LAUNCHED) == 0) {
469 tg.pln.pln_x = trade.trd_x;
470 tg.pln.pln_y = trade.trd_y;
472 makelost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
473 tg.pln.pln_x, tg.pln.pln_y);
474 tg.pln.pln_own = trade.trd_maxbidder;
475 makenotlost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
476 tg.pln.pln_x, tg.pln.pln_y);
477 tg.pln.pln_wing = ' ';
478 /* no cheap version of fly */
479 if (opt_MOB_ACCESS) {
480 tg.pln.pln_mobil = -(etu_per_update / sect_mob_neg_factor);
482 tg.pln.pln_mobil = 0;
484 tg.pln.pln_mission = 0;
485 tg.pln.pln_harden = 0;
486 time(&tg.pln.pln_access);
487 tg.pln.pln_ship = -1;
488 tg.pln.pln_land = -1;
491 takeover_ship(&tg.shp, trade.trd_maxbidder, 0);
494 tg.lnd.lnd_x = trade.trd_x;
495 tg.lnd.lnd_y = trade.trd_y;
496 if (tg.lnd.lnd_ship >= 0) {
498 getship(tg.lnd.lnd_ship, &ship);
500 putship(ship.shp_uid, &ship);
502 makelost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid, tg.lnd.lnd_x,
504 tg.lnd.lnd_own = trade.trd_maxbidder;
505 makenotlost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid,
506 tg.lnd.lnd_x, tg.lnd.lnd_y);
507 tg.lnd.lnd_army = ' ';
508 /* no cheap version of fly */
509 if (opt_MOB_ACCESS) {
510 tg.lnd.lnd_mobil = -(etu_per_update / sect_mob_neg_factor);
512 tg.lnd.lnd_mobil = 0;
514 tg.lnd.lnd_harden = 0;
515 time(&tg.lnd.lnd_access);
516 tg.lnd.lnd_mission = 0;
517 /* Drop any land units this unit was carrying */
518 snxtitem_xy(&ni, EF_LAND, tg.lnd.lnd_x, tg.lnd.lnd_y);
519 while (nxtitem(&ni, (s_char *)&land)) {
520 if (land.lnd_land != tg.lnd.lnd_uid)
523 wu(0, land.lnd_own, "unit #%d dropped in %s\n",
525 xyas(land.lnd_x, land.lnd_y, land.lnd_own));
526 putland(land.lnd_uid, &land);
528 /* Drop any planes this unit was carrying */
529 snxtitem_xy(&ni, EF_PLANE, tg.lnd.lnd_x, tg.lnd.lnd_y);
530 while (nxtitem(&ni, (s_char *)&plane)) {
531 if (plane.pln_flags & PLN_LAUNCHED)
533 if (plane.pln_land != land.lnd_uid)
536 wu(0, plane.pln_own, "plane #%d dropped in %s\n",
538 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
539 putplane(plane.pln_uid, &plane);
541 tg.lnd.lnd_ship = -1;
542 tg.lnd.lnd_land = -1;
545 logerror("Bad trade type %d in trade\n", trade.trd_type);
548 if (!ef_write(trade.trd_type, saveid, (char *)&tg)) {
549 logerror("Couldn't write unit to disk; seek help.\n");
552 nreport(trade.trd_owner, N_MAKE_SALE, trade.trd_maxbidder, 1);
553 wu(0, trade.trd_owner, "%s bought a %s #%d from you for $%.2f\n",
554 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
555 saveid, (float)(price * tradetax));
556 wu(0, trade.trd_maxbidder,
557 "The bidding is over & you bought %s #%d from %s for $%.2f\n",
558 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
561 /* logerror("Done checking the trades.\n");*/
566 ontradingblock(int type, int *ptr)
567 /* Generic pointer */
573 for (n = 0; gettrade(n, &trade); n++) {
574 if (trade.trd_unitid < 0)
576 if (!trade_getitem(&trade, &tg))
578 if (trade.trd_type != type)
580 if (tg.gen.trg_uid == ((struct genstr *)ptr)->trg_uid)
587 trdswitchown(int type, int *ptr, int newown)
588 /* Generic pointer */
594 for (n = 0; gettrade(n, &trade); n++) {
595 if (trade.trd_unitid < 0)
597 if (!trade_getitem(&trade, &tg))
599 if (trade.trd_type != type)
601 if (tg.gen.trg_uid != ((struct genstr *)ptr)->trg_uid)
603 if (trade.trd_owner == trade.trd_maxbidder)
604 trade.trd_maxbidder = newown;
605 trade.trd_owner = newown;
607 trade.trd_unitid = -1;