112 lines
3 KiB
C
112 lines
3 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure, Markus Armbruster
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*
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* Empire is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* ---
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*
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* See files README, COPYING and CREDITS in the root of the source
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* tree for related information and legal notices. It is expected
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* that future projects/authors will amend these files as needed.
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*
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* ---
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*
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* payo.c: Calculate trade ship payoffs
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*
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* Known contributors to this file:
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* Thomas Ruschak, 1992
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*/
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#include <config.h>
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#include "commands.h"
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#include "optlist.h"
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#include "ship.h"
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int
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payo(void)
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{
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struct sctstr sect;
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int nships;
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struct nstr_item ni;
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struct shpstr ship;
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struct mchrstr *mp;
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int dist;
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float cash = 0.0;
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if (!snxtitem(&ni, EF_SHIP, player->argp[1], NULL))
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return RET_SYN;
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nships = 0;
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while (nxtitem(&ni, &ship)) {
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if (!player->owner || ship.shp_own == 0)
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continue;
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mp = &mchr[(int)ship.shp_type];
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if (!(mp->m_flags & M_TRADE))
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continue;
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if (nships++ == 0) {
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if (player->god)
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pr("own ");
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pr("shp# ship type orig x,y x,y dist $$\n");
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}
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if (player->god)
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pr("%3d ", ship.shp_own);
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pr("%4d ", ni.cur);
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pr("%-16.16s ", mchr[(int)ship.shp_type].m_name);
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if (ship.shp_own != ship.shp_orig_own && !player->god) {
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/* Don't disclose construction site to pirates! */
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pr(" ? ");
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prxy("%4d,%-4d ", ship.shp_x, ship.shp_y);
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pr(" ? $ ?\n");
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continue;
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}
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prxy("%4d,%-4d ", ship.shp_orig_x, ship.shp_orig_y);
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prxy("%4d,%-4d ", ship.shp_x, ship.shp_y);
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getsect(ship.shp_x, ship.shp_y, §);
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dist = mapdist(ship.shp_x, ship.shp_y,
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ship.shp_orig_x, ship.shp_orig_y);
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pr("%4d ", dist);
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if (dist < trade_1_dist)
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cash = 0;
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else if (dist < trade_2_dist)
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cash = 1.0 + trade_1 * dist;
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else if (dist < trade_3_dist)
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cash = 1.0 + trade_2 * dist;
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else
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cash = 1.0 + trade_3 * dist;
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cash *= mp->m_cost;
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cash *= ship.shp_effic / 100.0;
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if (sect.sct_own && (sect.sct_own != ship.shp_own))
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cash *= (1.0 + trade_ally_bonus);
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pr("$%6.2f\n", cash);
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}
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if (nships == 0) {
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if (player->argp[1])
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pr("%s: No ship(s)\n", player->argp[1]);
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else
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pr("%s: No ship(s)\n", "");
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return RET_FAIL;
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} else
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pr("%d ship%s\n", nships, splur(nships));
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return RET_OK;
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}
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