142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2011, 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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* check.c: Check a sector, plane, land unit, ship or nuke
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*
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* Known contributors to this file:
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* Steve McClure, 1998
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* Markus Armbruster, 2004-2011
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*/
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#include <config.h>
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#include "commodity.h"
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#include "empobj.h"
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#include "file.h"
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#include "player.h"
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#include "prototypes.h"
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#include "xy.h"
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/* Note that timestamps make things tricky. And, we don't
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* really care about the timestamp, we just care about the rest
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* of the structure. So, we make a copy, and zero the timestamps
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* in both copies, and then compare. */
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static int
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obj_changed(struct empobj *obj, size_t sz)
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{
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union empobj_storage old, tobj;
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get_empobj(obj->ef_type, obj->uid, &old);
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memcpy(&tobj, obj, sz);
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old.gen.timestamp = tobj.gen.timestamp = 0;
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old.gen.generation = tobj.gen.generation = 0;
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if (memcmp(&tobj, &old, sz))
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return 1;
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ef_mark_fresh(obj->ef_type, obj);
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return 0;
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}
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int
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check_sect_ok(struct sctstr *sectp)
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{
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if (obj_changed((struct empobj *)sectp, sizeof(*sectp))) {
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pr("Sector %s has changed!\n",
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xyas(sectp->sct_x, sectp->sct_y, player->cnum));
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return 0;
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}
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return 1;
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}
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int
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check_ship_ok(struct shpstr *shipp)
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{
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if (obj_changed((struct empobj *)shipp, sizeof(*shipp))) {
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pr("Ship #%d has changed!\n", shipp->shp_uid);
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return 0;
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}
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return 1;
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}
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int
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check_plane_ok(struct plnstr *planep)
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{
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if (obj_changed((struct empobj *)planep, sizeof(*planep))) {
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pr("Plane #%d has changed!\n", planep->pln_uid);
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return 0;
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}
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return 1;
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}
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int
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check_land_ok(struct lndstr *landp)
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{
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if (obj_changed((struct empobj *)landp, sizeof(*landp))) {
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pr("Land unit #%d has changed!\n", landp->lnd_uid);
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return 0;
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}
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return 1;
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}
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int
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check_nuke_ok(struct nukstr *nukep)
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{
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if (obj_changed((struct empobj *)nukep, sizeof(*nukep))) {
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pr("Nuke %d has changed!\n", nukep->nuk_uid);
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return 0;
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}
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return 1;
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}
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int
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check_loan_ok(struct lonstr *loanp)
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{
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if (obj_changed((struct empobj *)loanp, sizeof(*loanp))) {
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pr("Loan %d has changed!\n", loanp->l_uid);
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return 0;
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}
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return 1;
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}
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int
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check_comm_ok(struct comstr *commp)
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{
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if (obj_changed((struct empobj *)commp, sizeof(*commp))) {
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pr("Commodity %d has changed!\n", commp->com_uid);
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return 0;
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}
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return 1;
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}
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int
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check_trade_ok(struct trdstr *tp)
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{
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if (obj_changed((struct empobj *)tp, sizeof(*tp))) {
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pr("Trade lot #%d has changed!\n", tp->trd_uid);
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return 0;
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}
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return 1;
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}
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