git.pond.sub.org Git - empserver/blob - src/lib/commands/spy.c

   1 /*
   2  *  Empire - A multi-player, client/server Internet based war game.
   3  *  Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
   4  *                           Ken Stevens, Steve McClure
   5  *
   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.
  10  *
  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.
  15  *
  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
  19  *
  20  *  ---
  21  *
  22  *  See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
  23  *  related information and legal notices. It is expected that any future
  24  *  projects/authors will amend these files as needed.
  25  *
  26  *  ---
  27  *
  28  *  spy.c: Spy on your neighbors
  29  *
  30  *  Known contributors to this file:
  31  *     Dave Pare, 1986
  32  *     Steve McClure, 1998-2000
  33  */
  34
  35 #include "misc.h"
  36 #include "player.h"
  37 #include "var.h"
  38 #include "sect.h"
  39 #include "item.h"
  40 #include "nat.h"
  41 #include "xy.h"
  42 #include "nsc.h"
  43 #include "nuke.h"
  44 #include "news.h"
  45 #include "deity.h"
  46 #include "path.h"
  47 #include "file.h"
  48 #include "land.h"
  49 #include "commands.h"
  50 #include "optlist.h"
  51
  52 /*
  53  * format:  spy <SECTS>
  54  *
  55  */
  56 static void spyline(struct sctstr *sp);
  57 static void insert(coord *table, int *len, coord x, coord y);
  58 static int check(coord *table, int *len, coord x, coord y);
  59
  60 int
  61 spy(void)
  62 {
  63         int     caught;
  64         natid   own;
  65         int     relat;
  66         coord   x, y;
  67         coord   nx, ny;
  68         int     military;
  69         int     savemil;
  70         int     btucost;
  71         int     i;
  72         coord   *table;             /* sectors already seen */
  73         int     t_len = 0;
  74         int     vec[I_MAX+1];
  75         int     dvec[I_MAX+1];
  76         int     nrecon;
  77         int     nunits;
  78         struct nstr_sect nstr;
  79         struct nstr_item ni;
  80         struct natstr *natp;
  81         struct sctstr from;
  82         struct sctstr dsect;
  83         struct lndstr land;
  84         int     changed = 0;
  85         int nsects;
  86
  87         /*
  88          * first arg should be the range of sectors
  89          */
  90         if (!snxtsct(&nstr, player->argp[1]))
  91                 return RET_SYN;
  92         nsects = (nstr.range.width+1) * nstr.range.height / 2;
  93         btucost = (nsects / 40) + 1;
  94         natp = getnatp(player->cnum);
  95         if (natp->nat_btu < btucost) {
  96                 pr("You don't have the BTU's for spying on that scale!\n");
  97                 return RET_FAIL;
  98         }
  99         /*
 100          * set up all the goodies we need later
 101          * 6 = neighbors, 2 = x,y
 102          */
 103         table = (coord *) malloc((nsects + 1) * 6 * 2 * sizeof(coord));
 104         bzero((s_char *)table, (nsects + 1) * 6 * 2 * sizeof(coord));
 105         pr("SPY report\n");
 106         prdate();
 107 pr("                 old sct rd  rl  def\n");
 108 pr("   sect   de own own eff eff eff eff  civ  mil  shl gun  pet food bars lnd pln\n");
 109         while (nxtsct(&nstr, &from)) {
 110                 if (!player->owner && !player->god)
 111                         continue;
 112                 getvec(VT_ITEM, vec, (s_char *) &from, EF_SECTOR);
 113                 nrecon=0;
 114                 nunits=0;
 115                 snxtitem_xy(&ni, EF_LAND, from.sct_x, from.sct_y);
 116                 while (nxtitem(&ni, (s_char *)&land)){
 117                         nunits++;
 118                         if (lchr[(int)land.lnd_type].l_flags & L_RECON)
 119                                 nrecon++;
 120                 }
 121                 if ((military = vec[I_MILIT]) == 0 && (nunits == 0))
 122                         continue;
 123                 x = from.sct_x;
 124                 y = from.sct_y;
 125                 /* Print out the units/planes in this sector */
 126                 prunits(x, y);
 127                 prplanes(x, y);
 128                 savemil = military;
 129                 /*
 130                  * check the neighboring sectors.
 131                  */
 132                 for (i = 1; i <= 6; i++) {
 133                         if ((military == 0) && (nunits == 0))
 134                                 break;
 135                         nx = x + diroff[i][0];
 136                         ny = y + diroff[i][1];
 137                         /*
 138                          * if we've already seen the
 139                          * sector, don't bother checking it
 140                          * out.
 141                          */
 142                         if (check(table, &t_len, nx, ny)) {
 143                                 continue;
 144                         }
 145                         getsect(nx, ny, &dsect);
 146                         getvec(VT_ITEM, dvec, (s_char *) &dsect, EF_SECTOR);
 147                         if (player->owner || (dsect.sct_type == SCT_WATER) ||
 148                                 (!dvec[I_MILIT] && !dvec[I_CIVIL] &&
 149                                  (num_units(nx, ny) == 0))) {
 150                                 /* mark sector as seen */
 151                                 insert(table, &t_len, nx, ny);
 152                                 continue;
 153                         }
 154                         /* catch spy N/200 chance, N = # military */
 155                         caught = chance((double) dvec[I_MILIT] / 200.0);
 156                         own = dsect.sct_own;
 157                         /* determine spyee relations with spyer */
 158                         relat = getrel(getnatp(own), player->cnum);
 159                         if (relat == NEUTRAL && caught) {
 160                                 /* neutral spy-ee */
 161                                 pr("Spy deported from %s\n",
 162                                         xyas(nx, ny, player->cnum));
 163                                 if(own != 0)
 164                                 wu(0, own, "%s (#%d) spy deported from %s\n",
 165                                         cname(player->cnum), player->cnum,
 166                                         xyas(nx, ny, own));
 167                         } else if (relat < NEUTRAL && caught) {
 168                                 /* at-war with spy-ee */
 169                                 pr("BANG!! A spy was shot in %s\n",
 170                                        xyas(nx, ny, player->cnum));
 171                                 military--;
 172                                 if(own != 0)
 173                                 wu(0, own, "%s (#%d) spy caught in %s\n",
 174                                         cname(player->cnum), player->cnum,
 175                                         xyas(nx, ny, own));
 176                                 nreport(player->cnum, N_SPY_SHOT, own, 1);
 177                         } else {
 178                                 insert(table, &t_len, nx, ny);
 179                                 spyline(&dsect);
 180                                 changed += map_set(player->cnum, dsect.sct_x,
 181                                         dsect.sct_y,
 182                                         dchr[dsect.sct_type].d_mnem, 0);
 183                                 prunits(dsect.sct_x,dsect.sct_y);
 184                                 prplanes(dsect.sct_x,dsect.sct_y);
 185                                 if (opt_HIDDEN) {
 186                                     setcont(player->cnum, own, FOUND_SPY);
 187                                 }
 188                         }
 189                         /*
 190                          * If you have a recon unit, it'll
 191                          * see the sector anyway...
 192                          */
 193                         if (nrecon && caught){
 194                                 insert(table, &t_len, nx, ny);
 195                                 spyline(&dsect);
 196                                 changed += map_set(player->cnum, dsect.sct_x,
 197                                         dsect.sct_y,
 198                                         dchr[dsect.sct_type].d_mnem, 0);
 199                                 prunits(dsect.sct_x, dsect.sct_y);
 200                                 prplanes(dsect.sct_x,dsect.sct_y);
 201                         }
 202                 }
 203                 /* subtract any military if necessary */
 204                 if ((savemil != military) && (savemil > 0)){
 205                         if ((military < 0) || (military > savemil))
 206                                 military = 0;
 207                         vec[I_MILIT] = military;
 208                         putvec (VT_ITEM, vec, (s_char *) &from, EF_SECTOR);
 209                         putsect(&from);
 210                 }
 211         }
 212         if (changed)
 213                 writemap(player->cnum);
 214         player->btused += btucost;
 215         free((s_char *)table);
 216         return RET_OK;
 217 }
 218
 219
 220 /*
 221  * just a big printf.
 222  */
 223 static void
 224 spyline(struct sctstr *sp)
 225 {
 226         int vec[I_MAX+1];
 227
 228         getvec(VT_ITEM, vec, (s_char *) sp, EF_SECTOR);
 229         prxy("%4d,%-4d",sp->sct_x, sp->sct_y, player->cnum);
 230         pr(" %c%c %3d %3d %3d %3d %3d %3d %4d %4d %4d %3d %4d %4d %4d %3d %3d\n",
 231            dchr[sp->sct_type].d_mnem,
 232            (sp->sct_newtype == sp->sct_type)?' ':dchr[sp->sct_newtype].d_mnem,
 233            sp->sct_own,
 234            sp->sct_oldown,
 235            roundintby((int)sp->sct_effic, 10),
 236            roundintby((int)sp->sct_road, 10),
 237            roundintby((int)sp->sct_rail, 10),
 238            roundintby((int)sp->sct_defense, 10),
 239            roundintby(vec[I_CIVIL], 10), roundintby(vec[I_MILIT], 10),
 240            roundintby(vec[I_SHELL], 10), roundintby(vec[I_GUN], 10),
 241            roundintby(vec[I_PETROL], 10), roundintby(vec[I_FOOD], 10),
 242            roundintby(vec[I_BAR], 10), count_sect_units(sp), count_sect_planes(sp));
 243 }
 244
 245
 246 /*
 247  * insert a key into the table.
 248  */
 249 static void
 250 insert(coord *table, int *len, coord x, coord y)
 251 {
 252         if (!check(table, len, x, y)) {
 253            table[(*len)++] = x;
 254            table[(*len)++] = y;
 255         }
 256 }
 257 /*
 258  * see if a key is in the bitmask table
 259  */
 260 static int
 261 check(coord *table, int *len, coord x, coord y)
 262 {
 263         int     i;
 264
 265         for (i = 0; i < *len; i += 2)
 266            if (table[i] == x && table[i + 1] == y)
 267               return 1;
 268         return 0;
 269 }
 270
 271 int
 272 num_units(int x, int y)
 273 {
 274     struct      lndstr land;
 275     struct      nstr_item ni;
 276     int n=0;
 277
 278     snxtitem_xy(&ni, EF_LAND, x, y);
 279     while (nxtitem(&ni, (s_char *)&land)) {
 280         if ((land.lnd_own == player->cnum) || (land.lnd_own == 0))
 281             continue;
 282         if (land.lnd_ship >= 0 || land.lnd_land >= 0)
 283             continue;
 284         n++;
 285     }
 286
 287     return n;
 288 }
 289
 290 void
 291 prunits(int x, int y)
 292 {
 293     struct lndstr land;
 294     struct nstr_item ni;
 295     s_char      report[128];
 296     double odds;
 297
 298     snxtitem_xy(&ni, EF_LAND, x, y);
 299     while (nxtitem(&ni, (s_char *)&land)) {
 300         if (land.lnd_own == player->cnum || land.lnd_own == 0)
 301             continue;
 302         if (land.lnd_ship >= 0 || land.lnd_land >= 0)
 303             continue;
 304         /* Don't always see spies */
 305         if (lchr[(int)land.lnd_type].l_flags & L_SPY) {
 306             odds = (double)(100 - land.lnd_effic) + 0.10;
 307             if (!(chance(odds)))
 308                 continue;
 309         }
 310         if ((land.lnd_own != player->cnum) && land.lnd_own) {
 311             int rel;
 312             s_char      *format;
 313
 314             rel = getrel(getnatp(player->cnum),land.lnd_own);
 315             if (rel == ALLIED)
 316                 format = "Allied (%s) unit in %s: ";
 317             else if (rel == FRIENDLY || rel == NEUTRAL)
 318                 format = "Neutral (%s) unit in %s: ";
 319             else
 320                 format = "Enemy (%s) unit in %s: ";
 321             sprintf(report, format, cname(land.lnd_own),
 322                     xyas(land.lnd_x, land.lnd_y,player->cnum));
 323             intelligence_report(player->cnum, &land, 3, report);
 324         }
 325     }
 326 }
 327
 328 void
 329 prplanes(int x, int y)
 330 {
 331     struct plnstr plane;
 332     struct nstr_item ni;
 333     s_char      report[128];
 334
 335     snxtitem_xy(&ni, EF_PLANE, x, y);
 336     while (nxtitem(&ni, (s_char *)&plane)) {
 337         if (plane.pln_own == player->cnum || plane.pln_own == 0)
 338             continue;
 339         if (plane.pln_ship >= 0 || plane.pln_land >= 0)
 340             continue;
 341         if (plane.pln_flags & PLN_LAUNCHED)
 342             continue;
 343         if ((plane.pln_own != player->cnum) && plane.pln_own) {
 344             int rel;
 345             s_char      *format;
 346
 347             rel = getrel(getnatp(player->cnum),plane.pln_own);
 348             if (rel == ALLIED)
 349                 format = "Allied (%s) plane in %s: %s\n";
 350             else if (rel == FRIENDLY || rel == NEUTRAL)
 351                 format = "Neutral (%s) plane in %s: %s\n";
 352             else
 353                 format = "Enemy (%s) plane in %s: %s\n";
 354             sprintf(report, format, cname(plane.pln_own),
 355                     xyas(plane.pln_x, plane.pln_y,player->cnum),
 356                     prplane(&plane));
 357             pr(report);
 358         }
 359     }
 360 }
 361