2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2009, 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 files README, COPYING and CREDITS in the root of the source
23 * tree for related information and legal notices. It is expected
24 * that future 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
40 #include "commodity.h"
69 union empobj_storage tg;
79 pr("The market is disabled.\n");
82 /* First, we execute all trades, so that we can only buy what is available. */
86 pr("\n Empire Trade Report\n ");
89 pr(" lot high bid by time left owner description\n");
90 pr(" --- -------- -- --------- ----- -------------------------\n");
92 snxtitem_all(&ni, EF_TRADE);
93 while (nxtitem(&ni, &trade)) {
94 if (trade.trd_owner == 0)
96 if (!trade_getitem(&trade, &tg)) {
102 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
105 pr("$%7ld %2d %5.2f hrs ",
106 trade.trd_price, trade.trd_maxbidder, tleft);
107 (void)trade_desc(&trade, &tg); /* XXX */
109 if (trade.trd_owner == player->cnum && !player->god)
110 pr(" (your own lot)\n");
114 pr("Nothing to buy at the moment...\n");
117 if ((p = getstring("Which lot to buy: ", buf)) == 0 || *p == 0)
119 if (isdigit(*p) == 0)
122 if (lotno < 0 || lotno >= ni.cur) {
123 pr("Bad lot number\n");
126 if (!gettrade(lotno, &trade)) {
127 pr("No such lot number\n");
130 if (trade.trd_unitid < 0) {
131 pr("Invalid lot number.\n");
134 if (!trade_getitem(&trade, &tg)) {
135 pr("Can't find trade #%d!\n", trade.trd_unitid);
137 trade.trd_unitid = -1;
138 if (!puttrade(lotno, &trade)) {
139 logerror("trad: can't write trade");
140 pr("Couldn't save after getitem failed; get help!\n");
145 switch (trade.trd_type) {
152 pr("Bad unit type on lot number %d\n", lotno);
155 if (trade.trd_owner == player->cnum) {
156 pr("You can't buy from yourself!\n");
159 price = trade.trd_price;
160 natp = getnatp(player->cnum);
161 if (natp->nat_money < price) {
162 pr("You don't have %.2f to spend!\n", price);
166 for (q = 0; gettrade(q, &tmpt); q++) {
167 if (tmpt.trd_maxbidder == player->cnum &&
168 tmpt.trd_unitid >= 0 && tmpt.trd_owner != player->cnum) {
169 tally += tmpt.trd_price * tradetax;
172 for (q = 0; getcomm(q, &comt); q++) {
173 if (comt.com_maxbidder == player->cnum &&
174 comt.com_owner != 0 && comt.com_owner != player->cnum) {
175 tally += (comt.com_price * comt.com_amount) * buytax;
178 canspend = natp->nat_money - tally;
180 * Find the destination sector for the plane before the trade is
181 * actually made, except for satellites in orbit. Must be owned
182 * and must be a 60% airfield (except for VTOL planes).
184 if (((trade.trd_type == EF_PLANE) && !pln_is_in_orbit(&tg.plane))
185 || (trade.trd_type == EF_NUKE)) {
187 p = getstring("Destination sector: ", buf);
188 if (!trade_check_ok(&trade, &tg))
193 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
194 pr("Bad sector designation; try again!\n");
197 if (!player->owner) {
198 pr("You don't own that sector; try again!\n");
201 if (!(plchr[tg.plane.pln_type].pl_flags & P_V)) {
202 if (!player->god && (sect.sct_type != SCT_AIRPT)) {
203 pr("Destination sector is not an airfield!\n");
206 if (!player->god && (sect.sct_effic < 60)) {
207 pr("That airport still under construction!\n");
214 if (trade.trd_type == EF_LAND) {
216 p = getstring("Destination sector: ", buf);
217 if (!trade_check_ok(&trade, &tg))
222 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
223 pr("Bad sector designation; try again!\n");
226 if (!player->owner) {
227 pr("You don't own that sector; try again!\n");
230 if (!player->god && (sect.sct_type != SCT_HEADQ)) {
231 pr("Destination sector is not a headquarters!\n");
234 if (!player->god && (sect.sct_effic < 60)) {
235 pr("That headquarters still under construction!\n");
242 if ((p = getstring("How much do you bid: ", buf)) == 0 || *p == 0)
244 if (!trade_check_ok(&trade, &tg))
249 if (bid > canspend) {
250 pr("You don't have %.2f to spend!\n", price);
253 if (bid > trade.trd_price) {
254 /* Add five minutes to the time if less than 5 minutes left. */
256 if (((TRADE_DELAY - (now - trade.trd_markettime)) < 300) &&
257 trade.trd_maxbidder != player->cnum)
258 trade.trd_markettime += 300;
259 trade.trd_price = bid;
260 trade.trd_maxbidder = player->cnum;
263 pr("Your bid on lot #%d is being considered.\n", lotno);
264 if (!puttrade(lotno, &trade))
265 pr("Problems with the trade file. Get help\n");
267 pr("Your bid wasn't high enough (you need to bid more than someone else.)\n");
280 union empobj_storage tg;
286 for (n = 0; gettrade(n, &trade); n++) {
287 if (trade.trd_unitid < 0)
289 if (!trade_getitem(&trade, &tg))
291 if (tg.gen.own == 0) {
293 trade.trd_unitid = -1;
297 if (tg.gen.own != trade.trd_owner) {
298 logerror("Something weird, tg.gen.own != trade.trd_owner!\n");
300 trade.trd_unitid = -1;
305 if (trade.trd_owner == trade.trd_maxbidder)
310 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
316 saveid = trade.trd_unitid;
318 trade.trd_unitid = -1;
319 if (!puttrade(n, &trade)) {
320 logerror("Couldn't save trade after purchase; get help!\n");
324 price = trade.trd_price;
325 natp = getnatp(trade.trd_maxbidder);
326 if (natp->nat_money < price) {
327 nreport(trade.trd_maxbidder, N_WELCH_DEAL, trade.trd_owner, 1);
328 wu(0, trade.trd_owner,
329 "%s tried to buy a %s #%d from you for $%.2f\n",
330 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
331 saveid, price * tradetax);
332 wu(0, trade.trd_owner, " but couldn't afford it.\n");
333 wu(0, trade.trd_owner,
334 " Your item was taken off the market.\n");
335 wu(0, trade.trd_maxbidder,
336 "You tried to buy %s #%d from %s for $%.2f\n",
337 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
339 wu(0, trade.trd_maxbidder, "but couldn't afford it.\n");
343 /* If we get this far, the sale will go through. */
345 natp->nat_money -= price;
348 natp = getnatp(trade.trd_owner);
349 natp->nat_money += roundavg(price * tradetax);
352 switch (trade.trd_type) {
354 tg.nuke.nuk_x = trade.trd_x;
355 tg.nuke.nuk_y = trade.trd_y;
356 tg.nuke.nuk_plane = -1;
359 if (!pln_is_in_orbit(&tg.plane)) {
360 tg.plane.pln_x = trade.trd_x;
361 tg.plane.pln_y = trade.trd_y;
363 if (opt_MOB_ACCESS) {
364 tg.plane.pln_mobil = -(etu_per_update / sect_mob_neg_factor);
365 game_tick_to_now(&tg.plane.pln_access);
367 tg.plane.pln_mobil = 0;
369 tg.plane.pln_harden = 0;
370 tg.plane.pln_ship = -1;
371 tg.plane.pln_land = -1;
376 tg.land.lnd_x = trade.trd_x;
377 tg.land.lnd_y = trade.trd_y;
378 if (opt_MOB_ACCESS) {
379 tg.land.lnd_mobil = -(etu_per_update / sect_mob_neg_factor);
380 game_tick_to_now(&tg.land.lnd_access);
382 tg.land.lnd_mobil = 0;
384 tg.land.lnd_harden = 0;
385 unit_drop_cargo(&tg.gen, 0);
386 tg.land.lnd_ship = -1;
387 tg.land.lnd_land = -1;
390 logerror("Bad trade type %d in trade\n", trade.trd_type);
393 unit_give_away(&tg.gen, trade.trd_maxbidder, 0);
394 put_empobj(trade.trd_type, saveid, &tg.gen);
396 nreport(trade.trd_owner, N_MAKE_SALE, trade.trd_maxbidder, 1);
397 wu(0, trade.trd_owner, "%s bought a %s #%d from you for $%.2f\n",
398 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg),
399 saveid, price * tradetax);
400 wu(0, trade.trd_maxbidder,
401 "The bidding is over & you bought %s #%d from %s for $%.2f\n",
402 trade_nameof(&trade, &tg), saveid, cname(trade.trd_owner),
409 ontradingblock(int type, void *ptr)
412 union empobj_storage tg;
415 for (n = 0; gettrade(n, &trade); n++) {
416 if (trade.trd_unitid < 0)
418 if (!trade_getitem(&trade, &tg))
420 if (trade.trd_type != type)
422 if (tg.gen.uid == ((struct empobj *)ptr)->uid)
429 trdswitchown(int type, void *ptr, int newown)
432 union empobj_storage tg;
435 for (n = 0; gettrade(n, &trade); n++) {
436 if (trade.trd_unitid < 0)
438 if (!trade_getitem(&trade, &tg))
440 if (trade.trd_type != type)
442 if (tg.gen.uid != ((struct empobj *)ptr)->uid)
444 if (trade.trd_owner == trade.trd_maxbidder)
445 trade.trd_maxbidder = newown;
446 trade.trd_owner = newown;
448 trade.trd_unitid = -1;