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;
91 pr("The market is disabled.\n");
94 /* First, we execute all trades, so that we can only buy what is available. */
98 pr("\n Empire Trade Report\n ");
101 pr(" lot high bid by time left owner description\n");
102 pr(" --- -------- -- --------- ----- -------------------------\n");
104 snxtitem_all(&ni, EF_TRADE);
105 while (nxtitem(&ni, (char *)&trade)) {
106 if (trade.trd_unitid < 0)
108 if (!trade_getitem(&trade, &tg)) {
111 /* fix up database if things get weird */
112 /*if (trade.trd_owner != tg.gen.trg_own) {
113 trade.trd_unitid = -1;
114 (void) puttrade(ni.cur, &trade);
120 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
123 pr("$%7d %2d %5.2f hrs ", trade.trd_maxprice,
124 trade.trd_maxbidder, tleft);
125 (void)trade_desc(&trade, &tg); /* XXX */
127 if (trade.trd_owner == player->cnum && !player->god)
128 pr(" (your own lot)\n");
132 pr("Nothing to buy at the moment...\n");
135 if ((p = getstring("Which lot to buy: ", buf)) == 0 || *p == 0)
137 if (isdigit(*p) == 0)
140 if (lotno < 0 || lotno >= ni.cur) {
141 pr("Bad lot number\n");
144 if (!gettrade(lotno, &trade)) {
145 pr("No such lot number\n");
148 if (trade.trd_unitid < 0) {
149 pr("Invalid lot number.\n");
152 if (!trade_getitem(&trade, &tg)) {
153 pr("Can't find trade #%d!\n", trade.trd_unitid);
154 trade.trd_unitid = -1;
155 if (!puttrade(lotno, &trade)) {
156 pr("Couldn't save after getitem failed; get help!\n");
161 switch (trade.trd_type) {
164 if (!getsect(tg.gen.trg_x, tg.gen.trg_y, §)) {
167 trade.trd_owner = sect.sct_own;
175 pr("Bad unit type on lot number %d\n", lotno);
178 if (trade.trd_owner == player->cnum) {
179 pr("You can't buy from yourself!\n");
182 price = trade.trd_maxprice;
183 natp = getnatp(player->cnum);
184 if (natp->nat_money < price) {
185 pr("You don't have %.2f to spend!\n", price);
189 for (q = 0; gettrade(q, &tmpt); q++) {
190 if (tmpt.trd_maxbidder == player->cnum &&
191 tmpt.trd_unitid >= 0 && tmpt.trd_owner != player->cnum) {
192 tally += tmpt.trd_maxprice * tradetax;
195 for (q = 0; getcomm(q, &comt); q++) {
196 if (comt.com_maxbidder == player->cnum &&
197 comt.com_owner != 0 && comt.com_owner != player->cnum) {
198 tally += (comt.com_maxprice * comt.com_amount) * buytax;
201 canspend = natp->nat_money - tally;
203 * Find the destination sector for the plane before the trade
204 * is actually made. Must be owned (except for satellites) and
205 * must be a 60% airfield (except for VTOL planes).
207 if (((trade.trd_type == EF_PLANE) || (trade.trd_type == EF_NUKE))
208 && ((trade.trd_type == EF_NUKE) ||
209 !(tg.pln.pln_flags & PLN_LAUNCHED))) {
210 plflags = plchr[(int)tg.pln.pln_type].pl_flags;
212 p = getstring("Destination sector: ", buf);
213 if (!trade_check_ok(lotno, &trade, &tg))
218 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
219 pr("Bad sector designation; try again!\n");
222 if (!player->owner && !(plflags & P_O)) {
223 pr("You don't own that sector; try again!\n");
226 if (!(plflags & (P_V | P_O))) {
227 if (!player->god && (sect.sct_type != SCT_AIRPT)) {
228 pr("Destination sector is not an airfield!\n");
231 if (!player->god && (sect.sct_effic < 60)) {
232 pr("That airport still under construction!\n");
239 if (trade.trd_type == EF_LAND) {
241 p = getstring("Destination sector: ", buf);
242 if (!trade_check_ok(lotno, &trade, &tg))
247 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
248 pr("Bad sector designation; try again!\n");
251 if (!player->owner) {
252 pr("You don't own that sector; try again!\n");
255 if (!player->god && (sect.sct_type != SCT_HEADQ)) {
256 pr("Destination sector is not a headquarters!\n");
259 if (!player->god && (sect.sct_effic < 60)) {
260 pr("That headquarters still under construction!\n");
267 pr("WARNING! This market issues credit. If you make more\n");
268 pr(" bids than your treasury can cover at the time of sale,\n");
269 pr(" you can potentially go into financial ruin, and see no\n");
270 pr(" gains. You have been warned.\n\n");
272 if ((p = getstring("How much do you bid: ", buf)) == 0 || *p == 0)
274 if (!trade_check_ok(lotno, &trade, &tg))
279 if (bid > canspend) {
280 pr("You don't have %.2f to spend!\n", price);
283 if (bid > trade.trd_maxprice) {
284 /* Add five minutes to the time if less than 5 minutes left. */
286 if (((TRADE_DELAY - (now - trade.trd_markettime)) < 300) &&
287 trade.trd_maxbidder != player->cnum)
288 trade.trd_markettime += 300;
289 trade.trd_maxprice = bid;
290 trade.trd_maxbidder = player->cnum;
293 pr("Your bid on lot #%d is being considered.\n", lotno);
294 if (!puttrade(lotno, &trade))
295 pr("Problems with the trade file. Get help\n");
297 pr("Your bid wasn't high enough (you need to bid more than someone else.)\n");
322 long outstanding; /* Outstanding debt */
323 long couval; /* Value of country's goods */
326 /* logerror("Checking the trades.\n");*/
327 for (n = 0; gettrade(n, &trade); n++) {
328 if (trade.trd_unitid < 0)
330 if (!trade_getitem(&trade, &tg))
332 if (tg.gen.trg_own == 0) {
333 trade.trd_unitid = -1;
337 if (tg.gen.trg_own != trade.trd_owner) {
339 ("SOmething weird, tg.gen.trg_own != trade.trd_owner!\n");
340 trade.trd_unitid = -1;
345 if (trade.trd_owner == trade.trd_maxbidder)
350 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
356 saveid = trade.trd_unitid;
357 trade.trd_unitid = -1;
358 if (!puttrade(n, &trade)) {
359 logerror("Couldn't save trade after purchase; get help!\n");
364 price = trade.trd_maxprice;
365 natp = getnatp(trade.trd_maxbidder);
366 if (natp->nat_money <= 0)
368 if (natp->nat_money < price && natp->nat_money > 0) {
369 monleft = price - (natp->nat_money - 1);
371 price = price - monleft;
372 } else if (natp->nat_money > 0) {
374 natp->nat_money -= price;
380 /* Try to make a loan for the rest from the owner. */
381 if (monleft > 0 && natp->nat_money > 0) {
382 if ((float)((float)price / (float)(price + monleft)) < 0.1) {
383 wu(0, trade.trd_maxbidder,
384 "You need at least 10 percent down to purchase something on credit.\n");
386 couval = get_couval(trade.trd_maxbidder);
387 outstanding = get_outstand(trade.trd_maxbidder);
388 couval = couval - outstanding;
389 if (couval > monleft) {
392 for (j = 0; getloan(j, &loan); j++) {
393 if (loan.l_status != LS_FREE)
399 ef_extend(EF_LOAN, 1);
400 loan.l_status = LS_SIGNED;
401 loan.l_loner = trade.trd_owner;
402 loan.l_lonee = trade.trd_maxbidder;
406 loan.l_amtdue = monleft;
407 time(&loan.l_lastpay);
409 (loan.l_ldur * SECS_PER_DAY) + loan.l_lastpay;
411 if (!putloan(j, &loan))
412 logerror("Error writing to the loan file.\n");
415 nreport(trade.trd_maxbidder, N_FIN_TROUBLE,
417 wu(0, trade.trd_maxbidder,
418 "You just took loan #%d for $%.2f to cover the cost of your purchase.\n",
419 j, (float)loan.l_amtdue);
420 wu(0, trade.trd_owner,
421 "You just extended loan #%d to %s to help with the purchase cost.\n",
422 j, cname(trade.trd_maxbidder));
424 nreport(trade.trd_maxbidder, N_CREDIT_JUNK,
426 wu(0, trade.trd_maxbidder,
427 "You don't have enough credit to get a loan.\n");
428 wu(0, trade.trd_owner,
429 "You just turned down a loan to %s.\n",
430 cname(trade.trd_maxbidder));
436 nreport(trade.trd_maxbidder, N_WELCH_DEAL, trade.trd_owner, 1);
437 wu(0, trade.trd_owner,
438 "%s tried to buy a %s #%d from you for $%.2f\n",
439 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
440 saveid, (float)(price * tradetax));
441 wu(0, trade.trd_owner, " but couldn't afford it.\n");
442 wu(0, trade.trd_owner,
443 " Your item was taken off the market.\n");
444 wu(0, trade.trd_maxbidder,
445 "You tried to buy %s #%d from %s for $%.2f\n",
446 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
447 (float)(price * tradetax));
448 wu(0, trade.trd_maxbidder, "but couldn't afford it.\n");
452 /* If we get this far, the sale will go through. */
453 /* Only pay tax on the part you actually get cash for. As a break,
454 we don't tax the part you have to give a loan on. */
457 natp = getnatp(trade.trd_owner);
458 /* Make sure we subtract the extra amount */
459 natp->nat_money += (roundavg(price * tradetax) - subleft);
461 switch (trade.trd_type) {
463 tg.nuk.nuk_x = trade.trd_x;
464 tg.nuk.nuk_y = trade.trd_y;
465 makelost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid, tg.nuk.nuk_x,
467 tg.nuk.nuk_own = trade.trd_maxbidder;
468 makenotlost(EF_NUKE, tg.nuk.nuk_own, tg.nuk.nuk_uid,
469 tg.nuk.nuk_x, tg.nuk.nuk_y);
472 if ((tg.pln.pln_flags & PLN_LAUNCHED) == 0) {
473 tg.pln.pln_x = trade.trd_x;
474 tg.pln.pln_y = trade.trd_y;
476 makelost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
477 tg.pln.pln_x, tg.pln.pln_y);
478 tg.pln.pln_own = trade.trd_maxbidder;
479 makenotlost(EF_PLANE, tg.pln.pln_own, tg.pln.pln_uid,
480 tg.pln.pln_x, tg.pln.pln_y);
481 tg.pln.pln_wing = ' ';
482 /* no cheap version of fly */
483 if (opt_MOB_ACCESS) {
484 tg.pln.pln_mobil = -(etu_per_update / sect_mob_neg_factor);
486 tg.pln.pln_mobil = 0;
488 tg.pln.pln_mission = 0;
489 tg.pln.pln_harden = 0;
490 time(&tg.pln.pln_access);
491 tg.pln.pln_ship = -1;
492 tg.pln.pln_land = -1;
495 takeover_ship(&tg.shp, trade.trd_maxbidder, 0);
498 tg.lnd.lnd_x = trade.trd_x;
499 tg.lnd.lnd_y = trade.trd_y;
500 if (tg.lnd.lnd_ship >= 0) {
502 getship(tg.lnd.lnd_ship, &ship);
504 putship(ship.shp_uid, &ship);
506 makelost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid, tg.lnd.lnd_x,
508 tg.lnd.lnd_own = trade.trd_maxbidder;
509 makenotlost(EF_LAND, tg.lnd.lnd_own, tg.lnd.lnd_uid,
510 tg.lnd.lnd_x, tg.lnd.lnd_y);
511 tg.lnd.lnd_army = ' ';
512 /* no cheap version of fly */
513 if (opt_MOB_ACCESS) {
514 tg.lnd.lnd_mobil = -(etu_per_update / sect_mob_neg_factor);
516 tg.lnd.lnd_mobil = 0;
518 tg.lnd.lnd_harden = 0;
519 time(&tg.lnd.lnd_access);
520 tg.lnd.lnd_mission = 0;
521 /* Drop any land units this unit was carrying */
522 snxtitem_xy(&ni, EF_LAND, tg.lnd.lnd_x, tg.lnd.lnd_y);
523 while (nxtitem(&ni, (s_char *)&land)) {
524 if (land.lnd_land != tg.lnd.lnd_uid)
527 wu(0, land.lnd_own, "unit #%d dropped in %s\n",
529 xyas(land.lnd_x, land.lnd_y, land.lnd_own));
530 putland(land.lnd_uid, &land);
532 /* Drop any planes this unit was carrying */
533 snxtitem_xy(&ni, EF_PLANE, tg.lnd.lnd_x, tg.lnd.lnd_y);
534 while (nxtitem(&ni, (s_char *)&plane)) {
535 if (plane.pln_flags & PLN_LAUNCHED)
537 if (plane.pln_land != land.lnd_uid)
540 wu(0, plane.pln_own, "plane #%d dropped in %s\n",
542 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
543 putplane(plane.pln_uid, &plane);
545 tg.lnd.lnd_ship = -1;
546 tg.lnd.lnd_land = -1;
549 logerror("Bad trade type %d in trade\n", trade.trd_type);
552 if (!ef_write(trade.trd_type, saveid, (char *)&tg)) {
553 logerror("Couldn't write unit to disk; seek help.\n");
556 nreport(trade.trd_owner, N_MAKE_SALE, trade.trd_maxbidder, 1);
557 wu(0, trade.trd_owner, "%s bought a %s #%d from you for $%.2f\n",
558 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
559 saveid, (float)(price * tradetax));
560 wu(0, trade.trd_maxbidder,
561 "The bidding is over & you bought %s #%d from %s for $%.2f\n",
562 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
565 /* logerror("Done checking the trades.\n");*/
570 ontradingblock(int type, int *ptr)
571 /* Generic pointer */
577 for (n = 0; gettrade(n, &trade); n++) {
578 if (trade.trd_unitid < 0)
580 if (!trade_getitem(&trade, &tg))
582 if (trade.trd_type != type)
584 if (tg.gen.trg_uid == ((struct genstr *)ptr)->trg_uid)
591 trdswitchown(int type, int *ptr, int newown)
592 /* Generic pointer */
598 for (n = 0; gettrade(n, &trade); n++) {
599 if (trade.trd_unitid < 0)
601 if (!trade_getitem(&trade, &tg))
603 if (trade.trd_type != type)
605 if (tg.gen.trg_uid != ((struct genstr *)ptr)->trg_uid)
607 if (trade.trd_owner == trade.trd_maxbidder)
608 trade.trd_maxbidder = newown;
609 trade.trd_owner = newown;
611 trade.trd_unitid = -1;