2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2004, 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 the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
23 * related information and legal notices. It is expected that any future
24 * 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
57 if (!opt_TRADESHIPS) {
58 pr("Tradeships are not enabled.\n");
61 if (!snxtitem(&ni, EF_SHIP, player->argp[1]))
65 while (nxtitem(&ni, (s_char *)&ship)) {
66 if (!player->owner || ship.shp_own == 0)
68 if (ship.shp_type < 0 || ship.shp_type > shp_maxno) {
69 pr("bad ship type %d (#%d)\n", ship.shp_type, ni.cur);
72 mp = &mchr[(int)ship.shp_type];
74 if (!(mp->m_flags & M_TRADE))
80 pr("shp# ship type orig x,y x,y dist $$\n");
83 pr("%3d ", ship.shp_own);
85 pr("%-16.16s ", mchr[(int)ship.shp_type].m_name);
86 if (ship.shp_own != ship.shp_orig_own && !player->god) {
87 /* Don't disclose construction site to pirates! */
89 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
93 prxy("%4d,%-4d ", ship.shp_orig_x, ship.shp_orig_y, player->cnum);
94 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
96 getsect(ship.shp_x, ship.shp_y, §);
98 dist = mapdist(ship.shp_x, ship.shp_y,
99 ship.shp_orig_x, ship.shp_orig_y);
102 if (dist < trade_1_dist)
104 else if (dist < trade_2_dist)
105 cash = (1.0 + trade_1 * ((float)dist));
106 else if (dist < trade_3_dist)
107 cash = (1.0 + trade_2 * ((float)dist));
109 cash = (1.0 + trade_3 * ((float)dist));
112 cash *= (((float)ship.shp_effic) / 100.0);
114 if (sect.sct_own && (sect.sct_own != ship.shp_own))
115 cash *= (1.0 + trade_ally_bonus);
116 pr("$%6.2f\n", cash);
120 pr("%s: No ship(s)\n", player->argp[1]);
122 pr("%s: No ship(s)\n", "");
125 pr("%d ship%s\n", nships, splur(nships));