131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* 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 "misc.h"
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#include "player.h"
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#include "var.h"
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#include "xy.h"
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#include "sect.h"
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#include "ship.h"
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#include "nat.h"
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#include "nsc.h"
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#include "deity.h"
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#include "file.h"
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#include "commands.h"
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#include "optlist.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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extern int trade_1_dist; /* less than this gets no money */
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extern int trade_2_dist; /* less than this gets trade_1 money */
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extern int trade_3_dist; /* less than this gets trade_2 money */
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extern float trade_1; /* return on trade_1 distance */
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extern float trade_2; /* return on trade_2 distance */
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extern float trade_3; /* return on trade_3 distance */
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extern float trade_ally_bonus; /* 20% bonus for trading with allies */
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if (!opt_TRADESHIPS) {
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pr("Tradeships are not enabled.\n");
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return RET_FAIL;
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}
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if (!snxtitem(&ni, EF_SHIP, player->argp[1]))
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return RET_SYN;
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nships = 0;
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while (nxtitem(&ni, (s_char *)&ship)) {
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if (!player->owner || ship.shp_own == 0)
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continue;
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if (ship.shp_type < 0 || ship.shp_type > shp_maxno) {
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pr("bad ship type %d (#%d)\n",
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ship.shp_type, ni.cur);
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continue;
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}
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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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prxy("%4d,%-4d ", ship.shp_orig_x,
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ship.shp_orig_y, player->cnum);
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prxy("%4d,%-4d ", ship.shp_x, ship.shp_y, player->cnum);
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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*((float)dist));
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else if (dist < trade_3_dist)
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cash = (1.0 + trade_2*((float)dist));
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else
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cash = (1.0 + trade_3*((float)dist));
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cash *= mp->m_cost;
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cash *= (((float)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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