2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2013, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire 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 3 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, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * trad.c: Buy units/ships/planes/nukes from other nations.
29 * Known contributors to this file:
32 * 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 trade_desc(&tg.gen); /* 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 p = getstring("Which lot to buy: ", buf);
120 if (isdigit(*p) == 0)
123 if (lotno < 0 || lotno >= ni.cur) {
124 pr("Bad lot number\n");
127 if (!gettrade(lotno, &trade)) {
128 pr("No such lot number\n");
131 if (trade.trd_unitid < 0) {
132 pr("Invalid lot number.\n");
135 if (!trade_getitem(&trade, &tg)) {
136 pr("Can't find trade #%d!\n", trade.trd_unitid);
138 trade.trd_unitid = -1;
139 if (!puttrade(lotno, &trade)) {
140 logerror("trad: can't write trade");
141 pr("Couldn't save after getitem failed; get help!\n");
146 switch (trade.trd_type) {
153 pr("Bad unit type on lot number %d\n", lotno);
156 if (trade.trd_owner == player->cnum) {
157 pr("You can't buy from yourself!\n");
160 price = trade.trd_price;
161 natp = getnatp(player->cnum);
162 if (natp->nat_money < price) {
163 pr("You don't have %.2f to spend!\n", price);
167 for (i = 0; gettrade(i, &tmpt); i++) {
168 if (tmpt.trd_maxbidder == player->cnum &&
169 tmpt.trd_unitid >= 0 && tmpt.trd_owner != player->cnum) {
170 tally += tmpt.trd_price * tradetax;
173 for (i = 0; getcomm(i, &comt); i++) {
174 if (comt.com_maxbidder == player->cnum &&
175 comt.com_owner != 0 && comt.com_owner != player->cnum) {
176 tally += (comt.com_price * comt.com_amount) * buytax;
179 canspend = natp->nat_money - tally;
181 /* Find the destination sector for the trade */
182 if (((trade.trd_type == EF_PLANE) && !pln_is_in_orbit(&tg.plane))
183 || (trade.trd_type == EF_NUKE)) {
185 p = getstring("Destination sector: ", buf);
186 if (!trade_check_ok(&trade, &tg.gen))
191 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
192 pr("Bad sector designation; try again!\n");
195 if (!player->owner) {
196 pr("You don't own that sector; try again!\n");
199 if (!(plchr[tg.plane.pln_type].pl_flags & P_V)) {
200 if (!player->god && (sect.sct_type != SCT_AIRPT)) {
201 pr("Destination sector is not an airfield!\n");
204 if (!player->god && (sect.sct_effic < 60)) {
205 pr("That airport still under construction!\n");
211 } else if (trade.trd_type == EF_LAND) {
213 p = getstring("Destination sector: ", buf);
214 if (!trade_check_ok(&trade, &tg.gen))
219 if (!sarg_xy(p, &sx, &sy) || !getsect(sx, sy, §)) {
220 pr("Bad sector designation; try again!\n");
223 if (!player->owner) {
224 pr("You don't own that sector; try again!\n");
227 if (!player->god && (sect.sct_type != SCT_HEADQ)) {
228 pr("Destination sector is not a headquarters!\n");
231 if (!player->god && (sect.sct_effic < 60)) {
232 pr("That headquarters still under construction!\n");
238 /* This trade doesn't teleport; make destination invalid */
243 p = getstring("How much do you bid: ", buf);
246 if (!trade_check_ok(&trade, &tg.gen))
251 if (bid > canspend) {
252 pr("You don't have %.2f to spend!\n", price);
255 if (bid > trade.trd_price) {
256 /* Add five minutes to the time if less than 5 minutes left. */
258 if (((TRADE_DELAY - (now - trade.trd_markettime)) < 300) &&
259 trade.trd_maxbidder != player->cnum)
260 trade.trd_markettime += 300;
261 trade.trd_price = bid;
262 trade.trd_maxbidder = player->cnum;
265 pr("Your bid on lot #%d is being considered.\n", lotno);
266 if (!puttrade(lotno, &trade))
267 pr("Problems with the trade file. Get help\n");
269 pr("Your bid wasn't high enough (you need to bid more than someone else.)\n");
282 union empobj_storage tg;
289 for (n = 0; gettrade(n, &trade); n++) {
290 if (trade.trd_unitid < 0)
292 if (!trade_getitem(&trade, &tg))
294 if (tg.gen.own == 0) {
296 trade.trd_unitid = -1;
300 if (tg.gen.own != trade.trd_owner) {
301 logerror("Something weird, tg.gen.own != trade.trd_owner!\n");
303 trade.trd_unitid = -1;
308 if (trade.trd_owner == trade.trd_maxbidder)
313 TRADE_DELAY / 3600.0 - (now - trade.trd_markettime) / 3600.0;
319 saveid = trade.trd_unitid;
320 seller = trade.trd_owner;
322 trade.trd_unitid = -1;
323 if (!puttrade(n, &trade)) {
324 logerror("Couldn't save trade after purchase; get help!\n");
328 price = trade.trd_price;
329 natp = getnatp(trade.trd_maxbidder);
330 if (natp->nat_money < price) {
331 nreport(trade.trd_maxbidder, N_WELCH_DEAL, seller, 1);
333 "%s tried to buy a %s #%d from you for $%.2f\n",
334 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg.gen),
335 saveid, price * tradetax);
336 wu(0, seller, " but couldn't afford it.\n");
338 " Your item was taken off the market.\n");
339 wu(0, trade.trd_maxbidder,
340 "You tried to buy %s #%d from %s for $%.2f\n",
341 trade_nameof(&trade, &tg.gen), saveid, cname(seller),
343 wu(0, trade.trd_maxbidder, "but couldn't afford it.\n");
347 /* If we get this far, the sale will go through. */
349 natp->nat_money -= price;
352 natp = getnatp(seller);
353 natp->nat_money += roundavg(price * tradetax);
356 switch (trade.trd_type) {
358 tg.nuke.nuk_x = trade.trd_x;
359 tg.nuke.nuk_y = trade.trd_y;
360 tg.nuke.nuk_plane = -1;
363 if (!pln_is_in_orbit(&tg.plane)) {
364 tg.plane.pln_x = trade.trd_x;
365 tg.plane.pln_y = trade.trd_y;
367 if (opt_MOB_ACCESS) {
368 tg.plane.pln_mobil = -(etu_per_update / sect_mob_neg_factor);
369 game_tick_to_now(&tg.plane.pln_access);
371 tg.plane.pln_mobil = 0;
373 tg.plane.pln_harden = 0;
374 tg.plane.pln_ship = -1;
375 tg.plane.pln_land = -1;
380 tg.land.lnd_x = trade.trd_x;
381 tg.land.lnd_y = trade.trd_y;
382 if (opt_MOB_ACCESS) {
383 tg.land.lnd_mobil = -(etu_per_update / sect_mob_neg_factor);
384 game_tick_to_now(&tg.land.lnd_access);
386 tg.land.lnd_mobil = 0;
388 tg.land.lnd_harden = 0;
389 unit_drop_cargo(&tg.gen, 0);
390 tg.land.lnd_ship = -1;
391 tg.land.lnd_land = -1;
394 logerror("Bad trade type %d in trade\n", trade.trd_type);
397 unit_give_away(&tg.gen, trade.trd_maxbidder, 0);
398 put_empobj(trade.trd_type, saveid, &tg.gen);
400 nreport(seller, N_MAKE_SALE, trade.trd_maxbidder, 1);
401 wu(0, seller, "%s bought %s #%d from you for $%.2f\n",
402 cname(trade.trd_maxbidder), trade_nameof(&trade, &tg.gen),
403 saveid, price * tradetax);
404 wu(0, trade.trd_maxbidder,
405 "The bidding is over & you bought %s #%d from %s for $%.2f\n",
406 trade_nameof(&trade, &tg.gen), saveid, cname(seller),
413 ontradingblock(int type, void *ptr)
416 union empobj_storage tg;
419 for (n = 0; gettrade(n, &trade); n++) {
420 if (trade.trd_unitid < 0)
422 if (!trade_getitem(&trade, &tg))
424 if (trade.trd_type != type)
426 if (tg.gen.uid == ((struct empobj *)ptr)->uid)
433 trdswitchown(int type, void *ptr, int newown)
436 union empobj_storage tg;
439 for (n = 0; gettrade(n, &trade); n++) {
440 if (trade.trd_unitid < 0)
442 if (!trade_getitem(&trade, &tg))
444 if (trade.trd_type != type)
446 if (tg.gen.uid != ((struct empobj *)ptr)->uid)
448 if (trade.trd_owner == trade.trd_maxbidder)
449 trade.trd_maxbidder = newown;
450 trade.trd_owner = newown;
452 trade.trd_unitid = -1;