Import of Empire 4.2.12
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commit
d8b7fdfae1
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327
src/lib/subs/trdsub.c
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327
src/lib/subs/trdsub.c
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/*
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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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* trdsub.c: Trade helper functions
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*
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* Known contributors to this file:
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* St Phil, 1989
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* Pat Loney, 1992
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* Steve McClure, 1996
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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 "sect.h"
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#include "nat.h"
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#include "item.h"
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#include "ship.h"
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#include "land.h"
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#include "nuke.h"
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#include "plane.h"
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#include "trade.h"
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#include "xy.h"
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#include "nsc.h"
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#include "file.h"
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#include "loan.h"
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#include "prototypes.h"
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#include "optlist.h"
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int
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trade_check_ok(int lot, struct trdstr *tp, union trdgenstr *tgp)
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{
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union trdgenstr check;
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struct trdstr trade;
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int result = 0;
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trade_getitem(tp, &check);
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if (tp->trd_type == EF_LAND)
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result = memcmp(&(check.lnd), &(tgp->lnd), sizeof(struct lndstr));
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else if (tp->trd_type == EF_PLANE)
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result = memcmp(&(check.pln), &(tgp->pln), sizeof(struct plnstr));
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else if (tp->trd_type == EF_SHIP)
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result = memcmp(&(check.shp), &(tgp->shp), sizeof(struct shpstr));
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else
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result = memcmp(&(check.nuk), &(tgp->nuk), sizeof(struct nukstr));
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if (result) {
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pr("That item has changed!\n");
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return 0;
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}
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gettrade(lot, &trade);
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if (memcmp((s_char *)&trade, (s_char *)tp, sizeof(struct trdstr))) {
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pr("That item has changed!\n");
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return 0;
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}
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return 1;
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}
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s_char *
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trade_nameof(struct trdstr *tp, union trdgenstr *tgp)
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{
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switch (tp->trd_type) {
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case EF_NUKE:
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return "nuclear stockpile";
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case EF_PLANE:
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return plchr[(int)tgp->pln.pln_type].pl_name;
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case EF_SHIP:
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return mchr[(int)tgp->shp.shp_type].m_name;
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case EF_LAND:
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return lchr[(int)tgp->lnd.lnd_type].l_name;
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}
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return "Bad trade type, get help";
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}
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/*
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* Describe an item up for sale. "tgp" is a union containing
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* the details of the generic item.
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* Return 1 on success, 0 on error
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*/
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int
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trade_desc(struct trdstr *tp, union trdgenstr *tgp)
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{
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int i;
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float price;
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struct sctstr sect;
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struct nukstr *np;
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struct shpstr *sp;
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struct plnstr *pp;
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struct lndstr *lp;
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struct natstr *natp;
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int needcomma;
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struct nstr_item ni;
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struct plnstr plane;
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struct lndstr land;
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price = multread(tp->trd_owner, player->cnum) * tp->trd_price;
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switch (tp->trd_type) {
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case EF_NUKE:
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np = &tgp->nuk;
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if (!getsect(np->nuk_x, np->nuk_y, §))
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return 0;
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tp->trd_owner = sect.sct_own;
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natp = getnatp(tp->trd_owner);
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pr("(%3d) ", sect.sct_own);
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needcomma = 0;
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for (i = 0; i < N_MAXNUKE; i++) {
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if (np->nuk_types[i]) {
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if (needcomma)
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pr(",");
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pr("%dx%s", np->nuk_types[i], nchr[i].n_name);
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needcomma = 1;
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}
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}
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break;
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case EF_SHIP:
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sp = &tgp->shp;
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tp->trd_owner = sp->shp_own;
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pr("(%3d) tech %d %d%% %s [",
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tp->trd_owner,
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sp->shp_tech,
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sp->shp_effic,
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prship(sp));
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for (i = 0; i < sp->shp_nv; i++) {
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pr("%c:%d ",
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ichr[sp->shp_vtype[i] & ~VT_TYPE].i_mnem,
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sp->shp_vamt[i]);
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}
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pr("] #%d", tp->trd_unitid);
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if (opt_SHOWPLANE) {
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snxtitem_all(&ni, EF_PLANE);
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while (nxtitem(&ni, (s_char *)&plane))
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{
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if (plane.pln_ship == sp->shp_uid &&
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plane.pln_own != 0)
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{
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pr("\n\t\t\t\t tech %3d %3d%% %s #%d",
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plane.pln_tech,
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plane.pln_effic,
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plchr[(int)plane.pln_type].pl_name,
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plane.pln_uid);
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if (plane.pln_nuketype != (s_char)-1)
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{
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pr("(%s)",nchr[(int)plane.pln_nuketype].n_name);
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}
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}
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}
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snxtitem_all(&ni, EF_LAND);
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while (nxtitem(&ni, (s_char *)&land))
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{
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if (land.lnd_ship == sp->shp_uid &&
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land.lnd_own != 0)
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{
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pr("\n\t\t\t\t tech %3d %3d%% %s #%d",
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land.lnd_tech,
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land.lnd_effic,
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lchr[(int)land.lnd_type].l_name,
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land.lnd_uid);
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if (land.lnd_nxlight)
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{
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snxtitem_all(&ni, EF_PLANE);
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while (nxtitem(&ni, (s_char *)&plane))
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{
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if (plane.pln_land == land.lnd_uid)
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{
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pr("\n\t\t\t\t tech %3d %3d%% %s #%d",
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plane.pln_tech,
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plane.pln_effic,
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plchr[(int)plane.pln_type].pl_name,
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plane.pln_uid);
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if (plane.pln_nuketype != (s_char)-1)
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{
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pr("(%s)",
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nchr[(int)plane.pln_nuketype].n_name);
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}
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}
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}
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}
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}
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}
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}
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getsect(sp->shp_x, sp->shp_y, §);
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if (sect.sct_type != SCT_WATER)
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pr(" in a %s %s", cname(sect.sct_own),
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dchr[sect.sct_type].d_name);
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else
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pr(" at sea");
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break;
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case EF_LAND:
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lp = &tgp->lnd;
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tp->trd_owner = lp->lnd_own;
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pr("(%3d) tech %d %d%% %s [",
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tp->trd_owner,
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lp->lnd_tech,
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lp->lnd_effic,
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lchr[(int)lp->lnd_type].l_name);
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for (i = 0; i < lp->lnd_nv; i++) {
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pr("%c:%d ",
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ichr[lp->lnd_vtype[i] & ~VT_TYPE].i_mnem,
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lp->lnd_vamt[i]);
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}
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pr("] #%d", tp->trd_unitid);
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if (opt_SHOWPLANE) {
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snxtitem_all(&ni, EF_PLANE);
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while (nxtitem(&ni, (s_char *)&plane))
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{
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if (plane.pln_land == lp->lnd_uid &&
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plane.pln_own != 0)
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{
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pr("\n\t\t\t\t tech %3d %3d%% %s #%d",
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plane.pln_tech,
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plane.pln_effic,
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plchr[(int)plane.pln_type].pl_name,
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plane.pln_uid);
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if (plane.pln_nuketype != (s_char)-1)
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{
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pr("(%s)",
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nchr[(int)plane.pln_nuketype].n_name);
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}
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}
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}
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}
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getsect(lp->lnd_x, lp->lnd_y, §);
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break;
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case EF_PLANE:
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pp = &tgp->pln;
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tp->trd_owner = pp->pln_own;
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pr("(%3d) tech %d %d%% %s #%d",
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tp->trd_owner,
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pp->pln_tech,
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pp->pln_effic,
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plchr[(int)pp->pln_type].pl_name,
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tp->trd_unitid);
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if (pp->pln_nuketype != (s_char)-1) {
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pr("(%s)", nchr[(int)pp->pln_nuketype].n_name);
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}
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break;
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default:
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pr("flaky unit type %d", tp->trd_type);
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break;
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}
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return 1;
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}
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int
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trade_getitem(struct trdstr *tp, union trdgenstr *tgp)
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{
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if (!ef_read(tp->trd_type, tp->trd_unitid, (s_char *)tgp))
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return 0;
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return 1;
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}
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long
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get_couval(int cnum)
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{
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struct sctstr *sp;
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register int j, k, val;
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long secttot = 0;
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for (j = 0; NULL != (sp = getsectid(j)); j++) {
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if (sp->sct_own != cnum)
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continue;
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secttot += (long)(dchr[sp->sct_type].d_value *
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((float)sp->sct_effic+100.0));
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for (k = 0; ichr[k].i_name; k++) {
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if (ichr[k].i_value == 0 || ichr[k].i_vtype == 0)
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continue;
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val = getvar(ichr[k].i_vtype, (s_char *)sp, EF_SECTOR);
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secttot += val * ichr[k].i_value;
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}
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}
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return secttot;
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}
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long
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get_outstand(int cnum)
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{
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struct lonstr loan;
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int j;
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long loantot = 0;
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for (j = 0; getloan(j, &loan); j++) {
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if (loan.l_status == LS_FREE)
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continue;
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if (loan.l_lonee == cnum)
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loantot += loan.l_amtdue;
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}
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return loantot;
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}
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struct ichrstr *
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whichitem(char p)
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{
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register int i;
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if (p == 0)
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return 0;
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for (i = 1; ichr[i].i_mnem != 0; i++)
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if (p == ichr[i].i_mnem)
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return (struct ichrstr *)(&ichr[i]);
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pr("Unrecognized item \"%c\"\n", p);
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return 0;
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}
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