Import of Empire 4.2.12
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d8b7fdfae1
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src/lib/commands/look.c
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321
src/lib/commands/look.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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* look.c: Lookout from a ship or land unit
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*
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* Known contributors to this file:
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*
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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 "land.h"
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#include "plane.h"
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#include "nsc.h"
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#include "nat.h"
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#include "path.h"
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#include "file.h"
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#include <fcntl.h>
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#include "commands.h"
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#include "optlist.h"
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static void look_ship(register struct shpstr *lookship);
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int
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look(void)
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{
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register int i;
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struct nstr_item ni;
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struct shpstr myship;
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struct sctstr sect;
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int x, y;
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int civ;
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int mil;
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u_char *bitmap;
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int changed = 0;
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if (!snxtitem(&ni, EF_SHIP, player->argp[1]))
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return RET_SYN;
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if ((bitmap = (u_char *)malloc((WORLD_X * WORLD_Y) / 8)) == 0) {
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logerror("malloc failed in look\n");
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pr("Memory error. Tell the deity.\n");
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return RET_FAIL;
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}
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bzero((s_char *)bitmap, (WORLD_X * WORLD_Y) / 8);
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while (nxtitem(&ni, (s_char *)&myship)) {
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if (!player->owner)
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continue;
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look_ship(&myship);
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for (i = 0; i <= 6; i++) {
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x = diroff[i][0] + myship.shp_x;
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y = diroff[i][1] + myship.shp_y;
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if (emp_getbit(x, y, bitmap))
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continue;
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emp_setbit(x, y, bitmap);
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getsect(x, y, §);
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if (sect.sct_type == SCT_WATER)
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continue;
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if (player->owner)
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pr("Your ");
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else
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pr("%s (#%d) ", cname(sect.sct_own),
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sect.sct_own);
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pr(dchr[sect.sct_type].d_name);
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changed += map_set(player->cnum, x, y,
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dchr[sect.sct_type].d_mnem, 0);
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pr(" %d%% efficient ", player->owner ? sect.sct_effic :
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roundintby((int)sect.sct_effic, 10));
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civ = getvar(V_CIVIL, (s_char *)§, EF_SECTOR);
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mil = getvar(V_MILIT, (s_char *)§, EF_SECTOR);
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if (civ)
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pr("with %s%d civ ", player->owner ? "" : "approx ",
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player->owner ? civ : roundintby(civ, 10));
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if (mil)
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pr("with %s%d mil ", player->owner ? "" : "approx ",
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player->owner ? mil : roundintby(mil, 10));
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pr("@ %s\n", xyas(x, y, player->cnum));
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if (opt_HIDDEN) {
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setcont(player->cnum, sect.sct_own, FOUND_LOOK);
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}
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}
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}
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if (changed)
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writemap(player->cnum);
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free((s_char *)bitmap);
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return RET_OK;
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}
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static void
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look_ship(register struct shpstr *lookship)
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{
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register struct shpstr *sp;
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register struct mchrstr *smcp;
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register struct mchrstr *tmcp;
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extern int ship_max_interdiction_range;
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struct sctstr sect;
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int range;
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int vrange;
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int i;
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int dist;
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range = (int) techfact(lookship->shp_tech,
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(double) mchr[(int)lookship->shp_type].m_vrnge);
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range = range * (lookship->shp_effic / 100.0);
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smcp = &mchr[(int)lookship->shp_type];
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if (smcp->m_flags & M_SUB)
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range = min(range, 1);
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for (i=0; NULL != (sp = getshipp(i)); i++) {
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if (sp->shp_own == player->cnum || sp->shp_own == 0)
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continue;
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dist = mapdist(sp->shp_x, sp->shp_y,
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lookship->shp_x, lookship->shp_y);
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if (dist > ship_max_interdiction_range)
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continue;
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tmcp = &mchr[(int)sp->shp_type];
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if (smcp->m_flags & M_SUB)
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vrange = (int)(sp->shp_visib * range/30.0);
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else
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vrange = (int)(sp->shp_visib * range/20.0);
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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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vrange = max(1, vrange);
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if (dist > vrange)
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continue;
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if (smcp->m_flags & M_SUB) {
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if (tmcp->m_flags & M_SONAR && dist < 2) {
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if(sp->shp_own != 0)
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wu(0, sp->shp_own,
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"%s detected surfacing noises in %s.\n",
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prship(sp),
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xyas(lookship->shp_x, lookship->shp_y,
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sp->shp_own));
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}
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if (dist == 0 && (tmcp->m_flags & M_SUB) == 0)
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if(sp->shp_own != 0)
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wu(0, sp->shp_own,
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"Periscope spotted in %s by %s\n",
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xyas(lookship->shp_x, lookship->shp_y,
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sp->shp_own),
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prship(sp));
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}
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/* subs at sea only seen by sonar */
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if (tmcp->m_flags & M_SUB && sect.sct_type == SCT_WATER)
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continue;
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pr("%s (#%d) %s @ %s\n",
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cname(sp->shp_own), sp->shp_own, prship(sp),
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xyas(sp->shp_x, sp->shp_y, player->cnum));
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}
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}
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static void look_land(register struct lndstr *lookland);
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int
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llook(void)
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{
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register int i;
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struct nstr_item ni;
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struct lndstr myland;
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struct sctstr sect;
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int x, y;
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int civ;
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int mil;
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u_char *bitmap;
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int changed = 0;
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if (!snxtitem(&ni, EF_LAND, player->argp[1]))
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return RET_SYN;
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if ((bitmap = (u_char *)malloc((WORLD_X * WORLD_Y) / 8)) == 0) {
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logerror("malloc failed in llook\n");
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pr("Memory error. Tell the deity.\n");
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return RET_FAIL;
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}
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bzero((s_char *)bitmap, (WORLD_X * WORLD_Y) / 8);
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while (nxtitem(&ni, (s_char *)&myland)) {
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if (!player->owner)
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continue;
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if (myland.lnd_ship >= 0)
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continue;
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if (myland.lnd_land >= 0)
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continue;
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/* Spies don't need military to do a "llook". Other
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units do */
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if ((lnd_getmil(&myland) <= 0) &&
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!(lchr[(int)myland.lnd_type].l_flags & L_SPY))
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continue;
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look_land(&myland);
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for (i = 0; i <= 6; i++) {
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x = diroff[i][0] + myland.lnd_x;
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y = diroff[i][1] + myland.lnd_y;
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if (emp_getbit(x, y, bitmap))
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continue;
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emp_setbit(x, y, bitmap);
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getsect(x, y, §);
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if (sect.sct_type == SCT_WATER)
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continue;
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if (player->owner)
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pr("Your ");
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else
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pr("%s (#%d) ", cname(sect.sct_own),
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sect.sct_own);
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pr(dchr[sect.sct_type].d_name);
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changed += map_set(player->cnum, x, y,
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dchr[sect.sct_type].d_mnem, 0);
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pr(" %d%% efficient ", player->owner ? sect.sct_effic :
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roundintby((int)sect.sct_effic, 10));
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civ = getvar(V_CIVIL, (s_char *)§, EF_SECTOR);
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mil = getvar(V_MILIT, (s_char *)§, EF_SECTOR);
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if (civ)
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pr("with %s%d civ ", player->owner ? "" :
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"approx ",
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player->owner ? civ : roundintby(civ, 10));
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if (mil)
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pr("with %s%d mil ", player->owner ? "" :
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"approx ",
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player->owner ? mil : roundintby(mil, 10));
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pr("@ %s\n", xyas(x, y, player->cnum));
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if (opt_HIDDEN) {
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setcont(player->cnum, sect.sct_own, FOUND_LOOK);
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}
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}
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}
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if (changed)
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writemap(player->cnum);
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free((s_char *)bitmap);
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return RET_OK;
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}
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static void
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look_land(register struct lndstr *lookland)
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{
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register struct plnstr *pp;
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register struct lndstr *lp;
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double drange;
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int range;
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int vrange;
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int i;
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int dist;
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double techfact(int, double);
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double odds;
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drange = techfact(lookland->lnd_tech,
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(double) lookland->lnd_spy);
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drange = (drange * ((double)lookland->lnd_effic / 100.0));
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range = ldround(drange,1);
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if (range == 0)
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return;
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for (i=0; NULL != (lp = getlandp(i)); i++) {
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if (lp->lnd_own == player->cnum || lp->lnd_own == 0)
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continue;
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if (lp->lnd_ship >= 0)
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continue;
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/* Don't always see spies */
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if (lchr[(int)lp->lnd_type].l_flags & L_SPY) {
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/* If it's on a ship or unit, assume it's hidden
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enough not to be seen */
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if (lp->lnd_ship >= 0 || lp->lnd_land >= 0)
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continue;
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odds = (double)(100 - lp->lnd_effic) + 0.10;
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if (!(chance(odds)))
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continue;
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}
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vrange = ldround((double)((lp->lnd_vis
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* range)/20.0),1);
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dist = mapdist(lp->lnd_x, lp->lnd_y,
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lookland->lnd_x, lookland->lnd_y);
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if (dist > vrange)
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continue;
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pr("%s (#%d) %s (approx %d mil) @ %s\n",
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cname(lp->lnd_own), lp->lnd_own,
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prland(lp), ldround((double)total_mil(lp), 20),
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xyas(lp->lnd_x, lp->lnd_y, player->cnum));
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}
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for (i=0; NULL != (pp = getplanep(i)); i++) {
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if (pp->pln_own == player->cnum || pp->pln_own == 0)
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continue;
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if (pp->pln_ship >= 0)
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continue;
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if (pp->pln_flags & PLN_LAUNCHED)
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continue;
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vrange = ldround((double)((10* range)/20.0),1);
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dist = mapdist(pp->pln_x, pp->pln_y,
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lookland->lnd_x, lookland->lnd_y);
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if (dist > vrange)
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continue;
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pr("%s (#%d) %s @ %s\n",
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cname(pp->pln_own), pp->pln_own,
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prplane(pp),
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xyas(pp->pln_x, pp->pln_y, player->cnum));
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}
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}
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