2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2015, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire 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 3 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, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * payo.c: Calculate trade ship payoffs
29 * Known contributors to this file:
30 * Thomas Ruschak, 1992
50 if (!snxtitem(&ni, EF_SHIP, player->argp[1], NULL))
54 while (nxtitem(&ni, &ship)) {
55 if (!player->owner || ship.shp_own == 0)
57 mp = &mchr[(int)ship.shp_type];
59 if (!(mp->m_flags & M_TRADE))
65 pr("shp# ship type orig x,y x,y dist $$\n");
68 pr("%3d ", ship.shp_own);
70 pr("%-16.16s ", mchr[(int)ship.shp_type].m_name);
71 if (ship.shp_own != ship.shp_orig_own && !player->god) {
72 /* Don't disclose construction site to pirates! */
74 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y);
78 prxy("%4d,%-4d ", ship.shp_orig_x, ship.shp_orig_y);
79 prxy("%4d,%-4d ", ship.shp_x, ship.shp_y);
81 getsect(ship.shp_x, ship.shp_y, §);
83 dist = mapdist(ship.shp_x, ship.shp_y,
84 ship.shp_orig_x, ship.shp_orig_y);
87 if (dist < trade_1_dist)
89 else if (dist < trade_2_dist)
90 cash = 1.0 + trade_1 * dist;
91 else if (dist < trade_3_dist)
92 cash = 1.0 + trade_2 * dist;
94 cash = 1.0 + trade_3 * dist;
97 cash *= ship.shp_effic / 100.0;
99 if (sect.sct_own && (sect.sct_own != ship.shp_own))
100 cash *= (1.0 + trade_ally_bonus);
101 pr("$%6.2f\n", cash);
105 pr("%s: No ship(s)\n", player->argp[1]);
107 pr("%s: No ship(s)\n", "");
110 pr("%d ship%s\n", nships, splur(nships));