2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2008, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * See files README, COPYING and CREDITS in the root of the source
23 * tree for related information and legal notices. It is expected
24 * that future projects/authors will amend these files as needed.
28 * spy.c: Spy on your neighbors
30 * Known contributors to this file:
32 * Steve McClure, 1998-2000
50 static int check(coord *table, int *len, coord x, coord y);
51 static void insert(coord *table, int *len, coord x, coord y);
52 static int num_units(int, int);
53 static void prplanes(int, int);
54 static void prunits(int, int);
55 static void spyline(struct sctstr *sp);
69 coord *table; /* sectors already seen */
73 struct nstr_sect nstr;
83 * first arg should be the range of sectors
85 if (!snxtsct(&nstr, player->argp[1]))
87 nsects = (nstr.range.width + 1) * nstr.range.height / 2;
88 btucost = (nsects / 40) + 1;
89 natp = getnatp(player->cnum);
90 if (natp->nat_btu < btucost) {
91 pr("You don't have the BTU's for spying on that scale!\n");
95 * set up all the goodies we need later
96 * 6 = neighbors, 2 = x,y
98 table = malloc((nsects + 1) * 6 * 2 * sizeof(coord));
99 memset(table, 0, (nsects + 1) * 6 * 2 * sizeof(coord));
102 pr(" old sct rd rl def\n");
103 pr(" sect de own own eff eff eff eff civ mil shl gun pet food bars lnd pln\n");
104 while (nxtsct(&nstr, &from)) {
105 if (!player->owner && !player->god)
109 snxtitem_xy(&ni, EF_LAND, from.sct_x, from.sct_y);
110 while (nxtitem(&ni, &land)) {
112 if (lchr[(int)land.lnd_type].l_flags & L_RECON)
115 if ((military = from.sct_item[I_MILIT]) == 0 && (nunits == 0))
119 /* Print out the units/planes in this sector */
124 * check the neighboring sectors.
126 for (i = 1; i <= 6; i++) {
127 if ((military == 0) && (nunits == 0))
129 nx = x + diroff[i][0];
130 ny = y + diroff[i][1];
132 * if we've already seen the
133 * sector, don't bother checking it
136 if (check(table, &t_len, nx, ny)) {
139 getsect(nx, ny, &dsect);
141 || (dsect.sct_type == SCT_WATER)
142 || (!dsect.sct_item[I_MILIT] && !dsect.sct_item[I_CIVIL]
143 && num_units(nx, ny) == 0)) {
144 /* mark sector as seen */
145 insert(table, &t_len, nx, ny);
148 /* catch spy N/200 chance, N = # military */
149 caught = chance(dsect.sct_item[I_MILIT] / 200.0);
151 /* determine spyee relations with spyer */
152 relat = getrel(getnatp(own), player->cnum);
153 if (relat == NEUTRAL && caught) {
155 pr("Spy deported from %s\n", xyas(nx, ny, player->cnum));
157 wu(0, own, "%s (#%d) spy deported from %s\n",
158 cname(player->cnum), player->cnum,
161 setcont(own, player->cnum, FOUND_SPY);
162 } else if (relat < NEUTRAL && caught) {
164 pr("BANG!! A spy was shot in %s\n",
165 xyas(nx, ny, player->cnum));
168 wu(0, own, "%s (#%d) spy caught in %s\n",
169 cname(player->cnum), player->cnum,
171 nreport(player->cnum, N_SPY_SHOT, own, 1);
173 setcont(own, player->cnum, FOUND_SPY);
175 insert(table, &t_len, nx, ny);
177 changed += map_set(player->cnum, dsect.sct_x, dsect.sct_y,
178 dchr[dsect.sct_type].d_mnem, 0);
179 prunits(dsect.sct_x, dsect.sct_y);
180 prplanes(dsect.sct_x, dsect.sct_y);
182 setcont(player->cnum, own, FOUND_SPY);
185 * If you have a recon unit, it'll
186 * see the sector anyway...
188 if (nrecon && caught) {
189 insert(table, &t_len, nx, ny);
191 changed += map_set(player->cnum, dsect.sct_x, dsect.sct_y,
192 dchr[dsect.sct_type].d_mnem, 0);
193 prunits(dsect.sct_x, dsect.sct_y);
194 prplanes(dsect.sct_x, dsect.sct_y);
197 /* subtract any military if necessary */
198 if ((savemil != military) && (savemil > 0)) {
199 if ((military < 0) || (military > savemil))
201 from.sct_item[I_MILIT] = military;
206 writemap(player->cnum);
207 player->btused += btucost;
217 spyline(struct sctstr *sp)
219 prxy("%4d,%-4d", sp->sct_x, sp->sct_y, player->cnum);
220 pr(" %c%c %3d %3d %3d %3d %3d %3d %4d %4d %4d %3d %4d %4d %4d %3d %3d\n",
221 dchr[sp->sct_type].d_mnem,
222 sp->sct_newtype == sp->sct_type ? ' ' : dchr[sp->sct_newtype].d_mnem,
225 roundintby((int)sp->sct_effic, 10),
226 roundintby((int)sp->sct_road, 10),
227 roundintby((int)sp->sct_rail, 10),
228 roundintby((int)sp->sct_defense, 10),
229 roundintby(sp->sct_item[I_CIVIL], 10),
230 roundintby(sp->sct_item[I_MILIT], 10),
231 roundintby(sp->sct_item[I_SHELL], 10),
232 roundintby(sp->sct_item[I_GUN], 10),
233 roundintby(sp->sct_item[I_PETROL], 10),
234 roundintby(sp->sct_item[I_FOOD], 10),
235 roundintby(sp->sct_item[I_BAR], 10),
236 count_sect_units(sp),
237 count_sect_planes(sp));
242 * insert a key into the table.
245 insert(coord *table, int *len, coord x, coord y)
247 if (!check(table, len, x, y)) {
254 * see if a key is in the bitmask table
257 check(coord *table, int *len, coord x, coord y)
261 for (i = 0; i < *len; i += 2)
262 if (table[i] == x && table[i + 1] == y)
268 num_units(int x, int y)
274 snxtitem_xy(&ni, EF_LAND, x, y);
275 while (nxtitem(&ni, &land)) {
276 if ((land.lnd_own == player->cnum) || (land.lnd_own == 0))
278 if (land.lnd_ship >= 0 || land.lnd_land >= 0)
287 prunits(int x, int y)
293 snxtitem_xy(&ni, EF_LAND, x, y);
294 while (nxtitem(&ni, &land)) {
295 if (land.lnd_own == player->cnum || land.lnd_own == 0)
297 if (land.lnd_ship >= 0 || land.lnd_land >= 0)
299 /* Don't always see spies */
300 if (lchr[(int)land.lnd_type].l_flags & L_SPY) {
301 if (!(chance(LND_SPY_DETECT_CHANCE(land.lnd_effic))))
304 if ((land.lnd_own != player->cnum) && land.lnd_own) {
308 rel = getrel(getnatp(player->cnum), land.lnd_own);
311 else if (rel == FRIENDLY || rel == NEUTRAL)
315 sprintf(report, "%s (%s) unit in %s: ",
316 relstr, cname(land.lnd_own),
317 xyas(land.lnd_x, land.lnd_y, player->cnum));
318 intelligence_report(player->cnum, &land, 3, report);
324 prplanes(int x, int y)
329 snxtitem_xy(&ni, EF_PLANE, x, y);
330 while (nxtitem(&ni, &plane)) {
331 if (plane.pln_own == player->cnum || plane.pln_own == 0)
333 if (plane.pln_ship >= 0 || plane.pln_land >= 0)
335 if (plane.pln_flags & PLN_LAUNCHED)
337 if ((plane.pln_own != player->cnum) && plane.pln_own) {
341 rel = getrel(getnatp(player->cnum), plane.pln_own);
344 else if (rel == FRIENDLY || rel == NEUTRAL)
348 pr("%s (%s) plane in %s: %s\n",
349 relstr, cname(plane.pln_own),
350 xyas(plane.pln_x, plane.pln_y, player->cnum),