empserver/src/lib/commands/payo.c
Markus Armbruster 4515b84c59 COPYING duplicates information from README. Remove. Move GPL from
LICENSE to COPYING, because that's where it usually is.  Update all
the references to these files.
2006-01-21 19:48:41 +00:00

124 lines
3.3 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.
*
* ---
*
* payo.c: Calculate trade ship payoffs
*
* Known contributors to this file:
* Thomas Ruschak, 1992
*/
#include <config.h>
#include "misc.h"
#include "player.h"
#include "xy.h"
#include "sect.h"
#include "ship.h"
#include "nat.h"
#include "nsc.h"
#include "file.h"
#include "commands.h"
#include "optlist.h"
int
payo(void)
{
struct sctstr sect;
int nships;
struct nstr_item ni;
struct shpstr ship;
struct mchrstr *mp;
int dist;
float cash = 0.0;
if (!opt_TRADESHIPS) {
pr("Tradeships are not enabled.\n");
return RET_FAIL;
}
if (!snxtitem(&ni, EF_SHIP, player->argp[1]))
return RET_SYN;
nships = 0;
while (nxtitem(&ni, &ship)) {
if (!player->owner || ship.shp_own == 0)
continue;
mp = &mchr[(int)ship.shp_type];
if (!(mp->m_flags & M_TRADE))
continue;
if (nships++ == 0) {
if (player->god)
pr("own ");
pr("shp# ship type orig x,y x,y dist $$\n");
}
if (player->god)
pr("%3d ", ship.shp_own);
pr("%4d ", ni.cur);
pr("%-16.16s ", mchr[(int)ship.shp_type].m_name);
if (ship.shp_own != ship.shp_orig_own && !player->god) {
/* Don't disclose construction site to pirates! */
pr(" ? ");
prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
pr(" ? $ ?\n");
continue;
}
prxy("%4d,%-4d ", ship.shp_orig_x, ship.shp_orig_y, player->cnum);
prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
getsect(ship.shp_x, ship.shp_y, &sect);
dist = mapdist(ship.shp_x, ship.shp_y,
ship.shp_orig_x, ship.shp_orig_y);
pr("%4d ", dist);
if (dist < trade_1_dist)
cash = 0;
else if (dist < trade_2_dist)
cash = (1.0 + trade_1 * ((float)dist));
else if (dist < trade_3_dist)
cash = (1.0 + trade_2 * ((float)dist));
else
cash = (1.0 + trade_3 * ((float)dist));
cash *= mp->m_cost;
cash *= (((float)ship.shp_effic) / 100.0);
if (sect.sct_own && (sect.sct_own != ship.shp_own))
cash *= (1.0 + trade_ally_bonus);
pr("$%6.2f\n", cash);
}
if (nships == 0) {
if (player->argp[1])
pr("%s: No ship(s)\n", player->argp[1]);
else
pr("%s: No ship(s)\n", "");
return RET_FAIL;
} else
pr("%d ship%s\n", nships, splur(nships));
return RET_OK;
}