2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2008, 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 * payo.c: Calculate trade ship payoffs
30 * Known contributors to this file:
31 * Thomas Ruschak, 1992
51 if (!opt_TRADESHIPS) {
52 pr("Tradeships are not enabled.\n");
55 if (!snxtitem(&ni, EF_SHIP, player->argp[1]))
59 while (nxtitem(&ni, &ship)) {
60 if (!player->owner || ship.shp_own == 0)
62 mp = &mchr[(int)ship.shp_type];
64 if (!(mp->m_flags & M_TRADE))
70 pr("shp# ship type orig x,y x,y dist $$\n");
73 pr("%3d ", ship.shp_own);
75 pr("%-16.16s ", mchr[(int)ship.shp_type].m_name);
76 if (ship.shp_own != ship.shp_orig_own && !player->god) {
77 /* Don't disclose construction site to pirates! */
79 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
83 prxy("%4d,%-4d ", ship.shp_orig_x, ship.shp_orig_y, player->cnum);
84 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
86 getsect(ship.shp_x, ship.shp_y, §);
88 dist = mapdist(ship.shp_x, ship.shp_y,
89 ship.shp_orig_x, ship.shp_orig_y);
92 if (dist < trade_1_dist)
94 else if (dist < trade_2_dist)
95 cash = 1.0 + trade_1 * dist;
96 else if (dist < trade_3_dist)
97 cash = 1.0 + trade_2 * dist;
99 cash = 1.0 + trade_3 * dist;
102 cash *= ship.shp_effic / 100.0;
104 if (sect.sct_own && (sect.sct_own != ship.shp_own))
105 cash *= (1.0 + trade_ally_bonus);
106 pr("$%6.2f\n", cash);
110 pr("%s: No ship(s)\n", player->argp[1]);
112 pr("%s: No ship(s)\n", "");
115 pr("%d ship%s\n", nships, splur(nships));