300 lines
8.7 KiB
C
300 lines
8.7 KiB
C
/*
|
|
* Empire - A multi-player, client/server Internet based war game.
|
|
* Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
|
|
* Ken Stevens, Steve McClure
|
|
*
|
|
* This program 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
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* 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
|
|
*
|
|
* ---
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include "misc.h"
|
|
#include "xy.h"
|
|
#include "file.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 "ship.h"
|
|
#include "trade.h"
|
|
#include "player.h"
|
|
#include "loan.h"
|
|
#include "commands.h"
|
|
#include "optlist.h"
|
|
|
|
/*
|
|
* format: buy <COMMODITY>
|
|
*
|
|
*/
|
|
int
|
|
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;
|
|
coord x, y;
|
|
char *p;
|
|
float bid;
|
|
time_t now;
|
|
double tally;
|
|
double canspend;
|
|
char buf[1024];
|
|
|
|
if (!opt_MARKET) {
|
|
pr("The market is disabled.\n");
|
|
return RET_FAIL;
|
|
}
|
|
natp = getnatp(player->cnum);
|
|
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)
|
|
return RET_SYN;
|
|
if (*p == 0)
|
|
return RET_SYN;
|
|
o = atoi(p);
|
|
if (o < 0)
|
|
return RET_SYN;
|
|
if (!getcomm(o, &comm) || comm.com_owner == 0) {
|
|
pr("Invalid lot number.\n");
|
|
return RET_OK;
|
|
}
|
|
if (comm.com_type != ip->i_uid) {
|
|
pr("That lot is not of the type you specified.\n");
|
|
return RET_OK;
|
|
}
|
|
if (comm.com_owner == player->cnum) {
|
|
pr("You can't bid on your own lot.\n");
|
|
return RET_OK;
|
|
}
|
|
if ((p = getstarg(player->argp[3], "How much per unit: ", buf)) == 0)
|
|
return RET_SYN;
|
|
bid = atof(p);
|
|
if (bid <= 0)
|
|
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);
|
|
return RET_FAIL;
|
|
}
|
|
/* check to see if all of the bids that this player has out plus this new bid
|
|
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++) {
|
|
if (tmpt.trd_maxbidder == player->cnum &&
|
|
tmpt.trd_unitid >= 0 && tmpt.trd_owner != player->cnum) {
|
|
tally += tmpt.trd_price * tradetax;
|
|
}
|
|
}
|
|
for (q = 0; getcomm(q, &comt); q++) {
|
|
if (comt.com_maxbidder == player->cnum &&
|
|
comt.com_owner != 0 && comt.com_owner != player->cnum) {
|
|
tally += (comt.com_price * comt.com_amount) * buytax;
|
|
}
|
|
}
|
|
canspend = natp->nat_money - tally;
|
|
getcomm(o, &comm);
|
|
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;
|
|
}
|
|
if (!(p = getstarg(player->argp[4], "destination sector : ", buf)))
|
|
return RET_SYN;
|
|
if (!sarg_xy(p, &x, &y))
|
|
return RET_SYN;
|
|
if (!getsect(x, y, §)) {
|
|
pr("Could not access sector");
|
|
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");
|
|
return RET_FAIL;
|
|
}
|
|
if (sect.sct_effic < 60) {
|
|
pr("That sector is under construction.\n");
|
|
return RET_FAIL;
|
|
}
|
|
n = sect.sct_item[ip->i_uid];
|
|
qty = comm.com_amount;
|
|
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;
|
|
}
|
|
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_price) {
|
|
comm.com_price = bid;
|
|
/* Add five minutes to the time if less than 5 minutes */
|
|
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));
|
|
}
|
|
comm.com_maxbidder = player->cnum;
|
|
comm.com_x = x;
|
|
comm.com_y = y;
|
|
putcomm(o, &comm);
|
|
pr("Your bid is being considered.\n");
|
|
} else {
|
|
pr("Your bid wasn't high enough (you need to bid at least $0.05 higher\n");
|
|
pr("than the last bid.\n");
|
|
return RET_OK;
|
|
}
|
|
|
|
check_market();
|
|
|
|
return RET_OK;
|
|
}
|
|
|
|
int
|
|
check_market(void)
|
|
{
|
|
struct comstr comm;
|
|
struct sctstr *sect;
|
|
struct natstr *natp;
|
|
int m;
|
|
int n;
|
|
time_t now;
|
|
double tmoney;
|
|
double tleft;
|
|
double subleft;
|
|
double monleft;
|
|
double gain;
|
|
double price;
|
|
|
|
/* 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)
|
|
continue;
|
|
if (CANT_HAPPEN(comm.com_type <= I_NONE || comm.com_type > I_MAX))
|
|
continue;
|
|
sect = getsectp(comm.com_x, comm.com_y);
|
|
m = sect->sct_item[comm.com_type];
|
|
|
|
monleft = 0;
|
|
|
|
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 (monleft > 0) {
|
|
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");
|
|
wu(0, comm.com_owner,
|
|
"Sale #%d fell through. Goods remain on the market.\n", n);
|
|
comm.com_maxbidder = comm.com_owner;
|
|
} else if (sect->sct_type != SCT_WAREH
|
|
&& sect->sct_type != SCT_HARBR) {
|
|
wu(0, comm.com_maxbidder,
|
|
"Sector not a warehouse now, 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 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 %s from you for $%.2f\n",
|
|
cname(comm.com_maxbidder), comm.com_amount,
|
|
ichr[comm.com_type].i_name, gain);
|
|
wu(0, comm.com_maxbidder,
|
|
"You just bought %d %s from %s for $%.2f\n",
|
|
comm.com_amount, ichr[comm.com_type].i_name,
|
|
cname(comm.com_owner), gain * buytax);
|
|
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;
|
|
comm.com_owner = 0;
|
|
}
|
|
comm.com_owner = 0;
|
|
putcomm(n, &comm);
|
|
}
|
|
/* logerror("Done checking the market.\n");*/
|
|
return RET_OK;
|
|
}
|