2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2006, 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
58 if (!opt_TRADESHIPS) {
59 pr("Tradeships are not enabled.\n");
62 if (!snxtitem(&ni, EF_SHIP, player->argp[1]))
66 while (nxtitem(&ni, &ship)) {
67 if (!player->owner || ship.shp_own == 0)
69 mp = &mchr[(int)ship.shp_type];
71 if (!(mp->m_flags & M_TRADE))
77 pr("shp# ship type orig x,y x,y dist $$\n");
80 pr("%3d ", ship.shp_own);
82 pr("%-16.16s ", mchr[(int)ship.shp_type].m_name);
83 if (ship.shp_own != ship.shp_orig_own && !player->god) {
84 /* Don't disclose construction site to pirates! */
86 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
90 prxy("%4d,%-4d ", ship.shp_orig_x, ship.shp_orig_y, player->cnum);
91 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
93 getsect(ship.shp_x, ship.shp_y, §);
95 dist = mapdist(ship.shp_x, ship.shp_y,
96 ship.shp_orig_x, ship.shp_orig_y);
99 if (dist < trade_1_dist)
101 else if (dist < trade_2_dist)
102 cash = (1.0 + trade_1 * ((float)dist));
103 else if (dist < trade_3_dist)
104 cash = (1.0 + trade_2 * ((float)dist));
106 cash = (1.0 + trade_3 * ((float)dist));
109 cash *= (((float)ship.shp_effic) / 100.0);
111 if (sect.sct_own && (sect.sct_own != ship.shp_own))
112 cash *= (1.0 + trade_ally_bonus);
113 pr("$%6.2f\n", cash);
117 pr("%s: No ship(s)\n", player->argp[1]);
119 pr("%s: No ship(s)\n", "");
122 pr("%d ship%s\n", nships, splur(nships));