X-Git-Url: http://git.pond.sub.org/?p=empserver;a=blobdiff_plain;f=src%2Flib%2Fcommands%2Fbuy.c;h=72afa28c20e10c86349a77d15dfadd1a31864f9d;hp=ab92e0eb72605076dd2e83fb5b8a186aa6eab260;hb=a021a20e551f1f0ab05ad6da336dc28c83a10075;hpb=46da1aec7a91889e4aa137fe0f22eb2cf587b359
diff --git a/src/lib/commands/buy.c b/src/lib/commands/buy.c
index ab92e0eb7..72afa28c2 100644
--- a/src/lib/commands/buy.c
+++ b/src/lib/commands/buy.c
@@ -1,11 +1,11 @@
/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
- * Ken Stevens, Steve McClure
+ * Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Ken Stevens, Steve McClure, Markus Armbruster
*
- * This program is free software; you can redistribute it and/or modify
+ * Empire is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
@@ -14,44 +14,34 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program. If not, see .
*
* ---
*
- * See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
- * related information and legal notices. It is expected that any future
- * projects/authors will amend these files as needed.
+ * See files README, COPYING and CREDITS in the root of the source
+ * tree for related information and legal notices. It is expected
+ * that future projects/authors will amend these files as needed.
*
* ---
*
* buy.c: Buy commodities from other nations
- *
+ *
* Known contributors to this file:
* Dave Pare, 1986
* Pat Loney, 1992
* Steve McClure, 1996-2000
+ * Markus Armbruster, 2004-2021
*/
-#include "misc.h"
-#include "xy.h"
-#include "file.h"
-#include "var.h"
-#include "sect.h"
-#include "nat.h"
-#include "news.h"
-#include "nsc.h"
-#include "item.h"
-#include "land.h"
-#include "commodity.h"
-#include "plane.h"
-#include "nuke.h"
-#include "ship.h"
-#include "trade.h"
-#include "player.h"
-#include "loan.h"
+#include
+
+#include "chance.h"
#include "commands.h"
+#include "commodity.h"
+#include "item.h"
+#include "news.h"
#include "optlist.h"
+#include "trade.h"
/*
* format: buy
@@ -63,29 +53,31 @@ buy(void)
struct sctstr sect;
struct natstr *natp;
struct comstr comm;
- struct comstr ncomm;
struct comstr comt;
struct trdstr tmpt;
struct ichrstr *ip;
int qty;
- int o, n, q;
+ int o, n;
coord x, y;
char *p;
float bid;
time_t now;
double tally;
double canspend;
- s_char buf[1024];
+ char buf[1024];
if (!opt_MARKET) {
pr("The market is disabled.\n");
return RET_FAIL;
}
natp = getnatp(player->cnum);
- display_mark(player->argp[1]);
+ ip = whatitem(player->argp[1], "Commodity you want to buy: ");
+ if (!ip)
+ return RET_SYN;
+ display_mark(ip->i_uid, 0);
pr("\n");
p = getstarg(player->argp[2], "Which lot are you bidding on: ", buf);
- if (p == 0)
+ if (!p)
return RET_SYN;
if (*p == 0)
return RET_SYN;
@@ -96,8 +88,7 @@ buy(void)
pr("Invalid lot number.\n");
return RET_OK;
}
- if (player->argp[1] && *(player->argp[1]) &&
- comm.com_type != player->argp[1][0]) {
+ if (comm.com_type != ip->i_uid) {
pr("That lot is not of the type you specified.\n");
return RET_OK;
}
@@ -105,16 +96,14 @@ buy(void)
pr("You can't bid on your own lot.\n");
return RET_OK;
}
- pr("WARNING! This market issues credit. If you make more\n");
- pr(" bids than your treasury can cover at the time of sale,\n");
- pr(" you can potentially go into financial ruin, and see no\n");
- pr(" gains. You have been warned.\n\n");
- if ((p = getstarg(player->argp[3], "How much per unit: ", buf)) == 0)
+ if (!(p = getstarg(player->argp[3], "How much per unit: ", buf)))
return RET_SYN;
bid = atof(p);
if (bid <= 0)
return RET_FAIL;
- if (natp->nat_money < (bid * comm.com_amount * buytax)) {
+ if (!check_comm_ok(&comm))
+ return RET_FAIL;
+ if (natp->nat_money < bid * comm.com_amount * buytax) {
pr("This purchase would cost %.2f, %.2f more than you have.\n",
bid * comm.com_amount * buytax,
bid * comm.com_amount * buytax - natp->nat_money);
@@ -124,21 +113,22 @@ buy(void)
would make him go broke. Ken, I ought to skin you alive for making me code
this part up.*/
tally = 0.0;
- for (q = 0; gettrade(q, &tmpt); q++) {
+ for (n = 0; gettrade(n, &tmpt); n++) {
+ if (!tmpt.trd_owner)
+ continue;
if (tmpt.trd_maxbidder == player->cnum &&
- tmpt.trd_unitid >= 0 && tmpt.trd_owner != player->cnum) {
- tally += tmpt.trd_maxprice * tradetax;
+ tmpt.trd_owner != player->cnum) {
+ tally += tmpt.trd_price * tradetax;
}
}
- for (q = 0; getcomm(q, &comt); q++) {
+ for (n = 0; getcomm(n, &comt); n++) {
if (comt.com_maxbidder == player->cnum &&
comt.com_owner != 0 && comt.com_owner != player->cnum) {
- tally += (comt.com_maxprice * comt.com_amount) * buytax;
+ tally += comt.com_price * comt.com_amount * buytax;
}
}
canspend = natp->nat_money - tally;
- getcomm(o, &comm);
- if ((bid * comm.com_amount * buytax) > canspend) {
+ if (bid * comm.com_amount * buytax > canspend) {
pr("You have overextended yourself in the market\n");
pr("You can not bid on the current items at that price.\n");
return RET_OK;
@@ -151,6 +141,8 @@ buy(void)
pr("Could not access sector");
return RET_FAIL;
}
+ if (!check_comm_ok(&comm))
+ return RET_FAIL;
if ((sect.sct_type != SCT_WAREH && sect.sct_type != SCT_HARBR) ||
sect.sct_own != player->cnum) {
pr("The destination sector is not one of your warehouses.\n");
@@ -160,46 +152,23 @@ buy(void)
pr("That sector is under construction.\n");
return RET_FAIL;
}
- ip = whichitem(comm.com_type);
- n = getvar(ip->i_vtype, (char *)§, EF_SECTOR);
+ n = sect.sct_item[ip->i_uid];
qty = comm.com_amount;
- if (qty + n > 9990) {
+ if (qty + n > ITEM_MAX) {
pr("That sector cannot hold %d more %s. It currently holds %d.\n",
qty, ip->i_name, n);
return RET_FAIL;
}
- /* First we check for room, then we yank back. Probably not necessary. */
- if (putvar(ip->i_vtype, n + qty, (char *)§, EF_SECTOR) <= 0) {
- pr("No room to store %s in %s\n",
- ip->i_name, xyas(sect.sct_x, sect.sct_y, player->cnum));
- return RET_FAIL;
- }
- if (putvar(ip->i_vtype, n, (char *)§, EF_SECTOR) <= 0) {
- pr("Something weird just happened, tell the deity.\n");
- logerror("buy.c: putvar failed.\n");
- return RET_FAIL;
- }
- if ((bid * comm.com_amount) > natp->nat_money) {
+ if (bid * comm.com_amount > natp->nat_money) {
pr("You don't have that much to spend!\n");
return RET_FAIL;
}
- getcomm(o, &ncomm);
- if (!ncomm.com_owner) {
- pr("That lot has been taken off the market.\n");
- return RET_FAIL;
- }
- if (bid > 0.04 + comm.com_maxprice) {
- comm.com_maxprice = bid;
- /* Add five minutes to the time if less than 5 minutes */
+ if (bid > 0.04 + comm.com_price) {
+ comm.com_price = bid;
time(&now);
- if (((MARK_DELAY - (now - comm.com_markettime)) < 300) &&
- comm.com_maxbidder != player->cnum) {
- comm.com_markettime += 300;
- /* Special case - what if so much time has gone by? Well,
- Just reset the markettime so that only 5 minutes are left */
- if ((MARK_DELAY - (now - comm.com_markettime)) < 0)
- comm.com_markettime = (now - (MARK_DELAY - 300));
- }
+ if (comm.com_markettime + MARK_DELAY - now < minutes(5) &&
+ comm.com_maxbidder != player->cnum)
+ comm.com_markettime = now + minutes(5) - MARK_DELAY;
comm.com_maxbidder = player->cnum;
comm.com_x = x;
comm.com_y = y;
@@ -221,119 +190,32 @@ check_market(void)
{
struct comstr comm;
struct sctstr *sect;
- struct ichrstr *ip;
struct natstr *natp;
int m;
int n;
time_t now;
- double tmoney;
- double tleft;
- double subleft;
- double monleft;
double gain;
double price;
- struct lonstr loan;
- long outstanding; /* Outstanding debt */
- long couval; /* Value of country's goods */
- int foundloan;
- int j;
-/* logerror("Checking the market.\n");*/
for (n = 0; getcomm(n, &comm); n++) {
if (comm.com_maxbidder == comm.com_owner || comm.com_owner == 0)
continue;
(void)time(&now);
- tleft = MARK_DELAY / 3600.0 - (now - comm.com_markettime) / 3600.0;
- if (tleft < 0)
- tleft = 0;
- if (tleft > 0.0)
+ if (comm.com_markettime + MARK_DELAY > now)
+ continue;
+ if (CANT_HAPPEN(comm.com_type <= I_NONE || comm.com_type > I_MAX))
continue;
- ip = whichitem(comm.com_type);
sect = getsectp(comm.com_x, comm.com_y);
- m = getvar(ip->i_vtype, (char *)sect, EF_SECTOR);
-
- monleft = 0;
+ m = sect->sct_item[comm.com_type];
- price = comm.com_maxprice * comm.com_amount * buytax;
- gain = comm.com_maxprice * comm.com_amount;
+ price = comm.com_price * comm.com_amount * buytax;
+ gain = comm.com_price * comm.com_amount;
natp = getnatp(comm.com_maxbidder);
- tmoney = natp->nat_money;
- if (tmoney <= 0)
- monleft = price;
- if (tmoney < price && tmoney > 0) {
- monleft = price - (tmoney - 1);
- tmoney = 1;
- price = price - monleft;
- } else if (tmoney > 0) {
- monleft = 0;
- tmoney = tmoney - price;
- }
-
- /* Subtract the amount of money that needs to come out in a loan. */
- subleft = monleft;
-
- if (opt_LOANS) {
- /* Try to make a loan for the rest from the owner. */
- if (monleft > 0 && tmoney > 0) {
- if ((float)((float)price / (float)(price + monleft)) < 0.1) {
- wu(0, comm.com_maxbidder,
- "You need at least 10 percent down to purchase something on credit.\n");
- } else {
- couval = get_couval(comm.com_maxbidder);
- outstanding = get_outstand(comm.com_maxbidder);
- couval = couval - outstanding;
- if (couval > monleft) {
- /* Make the loan */
- foundloan = 0;
- for (j = 0; getloan(j, &loan); j++) {
- if (loan.l_status != LS_FREE)
- continue;
- foundloan = 1;
- break;
- }
- if (!foundloan)
- ef_extend(EF_LOAN, 1);
- loan.l_status = LS_SIGNED;
- loan.l_loner = comm.com_owner;
- loan.l_lonee = comm.com_maxbidder;
- loan.l_irate = 25;
- loan.l_ldur = 4;
- loan.l_amtpaid = 0;
- loan.l_amtdue = monleft;
- time(&loan.l_lastpay);
- loan.l_duedate =
- (loan.l_ldur * SECS_PER_DAY) + loan.l_lastpay;
- loan.l_uid = j;
- if (!putloan(j, &loan))
- logerror("Error writing to the loan file.\n");
- else
- monleft = 0;
- nreport(comm.com_maxbidder, N_FIN_TROUBLE,
- comm.com_owner, 1);
- wu(0, comm.com_maxbidder,
- "You just took loan #%d for $%.2f to cover the cost of your purchase.\n",
- j, loan.l_amtdue);
- wu(0, comm.com_owner,
- "You just extended loan #%d to %s to help with the purchase cose.\n",
- j, cname(comm.com_maxbidder));
- } else {
- nreport(comm.com_maxbidder, N_CREDIT_JUNK,
- comm.com_owner, 1);
- wu(0, comm.com_maxbidder,
- "You don't have enough credit to get a loan.\n");
- wu(0, comm.com_owner,
- "You just turned down a loan to %s.\n",
- cname(comm.com_maxbidder));
- }
- }
- }
- }
-
- if (monleft > 0) {
+ if (natp->nat_money < price) {
nreport(comm.com_maxbidder, N_WELCH_DEAL, comm.com_owner, 1);
wu(0, comm.com_maxbidder,
- "You didn't have enough cash/credit to cover the cost.\n");
+ "You didn't have enough cash to cover the cost.\n");
wu(0, comm.com_owner,
"Sale #%d fell through. Goods remain on the market.\n", n);
comm.com_maxbidder = comm.com_owner;
@@ -344,33 +226,32 @@ check_market(void)
wu(0, comm.com_owner,
"Sale #%d fell through. Goods remain on the market.\n", n);
comm.com_maxbidder = comm.com_owner;
- } else if (putvar(ip->i_vtype, m + comm.com_amount,
- (char *)sect, EF_SECTOR) <= 0) {
+ } else if (m + comm.com_amount > ITEM_MAX) {
wu(0, comm.com_maxbidder,
"Warehouse full, sale #%d fell though.\n", n);
wu(0, comm.com_owner,
"Sale #%d fell through. Goods remain on the market.\n", n);
comm.com_maxbidder = comm.com_owner;
} else {
+ sect->sct_item[comm.com_type] = m + comm.com_amount;
putsect(sect);
nreport(comm.com_owner, N_MAKE_SALE, comm.com_maxbidder, 1);
- wu(0, comm.com_owner, "%s bought %d %c's from you for $%.2f\n",
+ wu(0, comm.com_owner, "%s bought %d %s from you for $%.2f\n",
cname(comm.com_maxbidder), comm.com_amount,
- comm.com_type, gain);
+ ichr[comm.com_type].i_name, gain);
wu(0, comm.com_maxbidder,
- "You just bought %d %c's from %s for $%.2f\n",
- comm.com_amount, comm.com_type, cname(comm.com_owner),
- gain * buytax);
+ "You just bought %d %s from %s for $%.2f\n",
+ comm.com_amount, ichr[comm.com_type].i_name,
+ cname(comm.com_owner), price);
+ natp->nat_money -= roundavg(price);
+ putnat(natp);
natp = getnatp(comm.com_owner);
- /* Make sure we subtract the amount that came out in a loan */
- natp->nat_money += (gain - subleft);
- natp = getnatp(comm.com_maxbidder);
- natp->nat_money = tmoney;
+ natp->nat_money += roundavg(gain);
+ putnat(natp);
comm.com_owner = 0;
}
comm.com_owner = 0;
putcomm(n, &comm);
}
-/* logerror("Done checking the market.\n");*/
return RET_OK;
}