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

   1 /*
   2  *  Empire - A multi-player, client/server Internet based war game.
   3  *  Copyright (C) 1986-2005, 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  *  fuel.c: fuel ships/land units
  29  *
  30  *  Known contributors to this file:
  31  *
  32  */
  33
  34 #include "misc.h"
  35 #include "player.h"
  36 #include "plague.h"
  37 #include "xy.h"
  38 #include "ship.h"
  39 #include "plane.h"
  40 #include "land.h"
  41 #include "nat.h"
  42 #include "nsc.h"
  43 #include "file.h"
  44 #include "sect.h"
  45 #include "optlist.h"
  46 #include "commands.h"
  47
  48
  49 union item_u {
  50     struct shpstr ship;
  51     struct lndstr land;
  52 };
  53
  54 int
  55 fuel(void)
  56 {
  57     struct nstr_item ni;
  58     union item_u item, item2;
  59     int type;
  60     struct mchrstr *mp;
  61     struct lchrstr *lcp;
  62     s_char *p;
  63     int fueled;
  64     int land_fuel, ship_fuel;
  65     int oil_amt, pet_amt, fuel_amt, tot_fuel, max_amt;
  66     int move_amt;
  67     float extra;
  68     struct sctstr sect;
  69     struct natstr *natp;
  70     int harbor, sector;
  71     int fuelled_ship = -1;
  72     struct nstr_item tender, ltender;
  73     s_char prompt[128];
  74     s_char buf[1024];
  75
  76     if (opt_FUEL == 0) {
  77         pr("Option 'FUEL' not enabled\n");
  78         return RET_SYN;
  79     }
  80     if ((p =
  81          getstarg(player->argp[1], "Ship or land unit (s,l)? ", buf)) == 0)
  82         return RET_SYN;
  83     type = ef_byname(p);
  84     if (type == EF_SECTOR)
  85         type = EF_SHIP;
  86     if (type != EF_SHIP && type != EF_LAND) {
  87         pr("Ships or land units only! (s, l)\n");
  88         return RET_SYN;
  89     }
  90     sprintf(prompt, "%s(s)? ", ef_nameof(type));
  91     p = getstarg(player->argp[2], prompt, buf);
  92     if (!snxtitem(&ni, type, p))
  93         return RET_SYN;
  94     if (isdigit(*p))
  95         fuelled_ship = atoi(p);
  96     p = getstarg(player->argp[3], "Amount: ", buf);
  97     if (p == 0 || *p == 0)
  98         return RET_SYN;
  99     fuel_amt = atoi(p);
 100     if (fuel_amt <= 0) {
 101         pr("Fuel amount must be positive!\n");
 102         return RET_FAIL;
 103     }
 104
 105     while (nxtitem(&ni, &item)) {
 106         fueled = 0;
 107         if (type == EF_SHIP) {
 108             if (item.ship.shp_own != player->cnum) {
 109                 int rel;
 110
 111                 if (item.ship.shp_uid != fuelled_ship)
 112                     continue;
 113                 natp = getnatp(player->cnum);
 114                 rel = getrel(natp, item.ship.shp_own);
 115                 if (rel < FRIENDLY)
 116                     continue;
 117             }
 118             if (!getsect(item.ship.shp_x, item.ship.shp_y, &sect))
 119                 continue;
 120             if (!item.ship.shp_own)
 121                 continue;
 122
 123             if ((sect.sct_type != SCT_HARBR)
 124                 && (sect.sct_type != SCT_WATER)
 125                 && (sect.sct_type != SCT_BSPAN) && (!opt_BIG_CITY
 126                                                     || sect.sct_type !=
 127                                                     SCT_CAPIT)) {
 128                 pr("Sector %s is not a harbor, bridge span, or sea.\n",
 129                    xyas(item.ship.shp_x, item.ship.shp_y,
 130                         item.ship.shp_own));
 131                 continue;
 132             }
 133
 134             mp = &mchr[(int)item.ship.shp_type];
 135
 136             harbor = 0;
 137             if (sect.sct_type == SCT_HARBR
 138                 || (opt_BIG_CITY && sect.sct_type == SCT_CAPIT)) {
 139                 harbor = 1;
 140                 oil_amt = sect.sct_item[I_OIL];
 141                 pet_amt = sect.sct_item[I_PETROL];
 142                 if ((oil_amt + pet_amt) == 0)
 143                     harbor = 0;
 144
 145                 if (sect.sct_effic < 2) {
 146                     pr("The harbor at %s is not 2%% efficient yet.\n",
 147                        xyas(item.ship.shp_x,
 148                             item.ship.shp_y, player->cnum));
 149                     harbor = 0;
 150                 }
 151                 if ((sect.sct_own != player->cnum) && sect.sct_own)
 152                     harbor = 0;
 153             }
 154
 155             if ((mp->m_fuelu == 0) && (item.ship.shp_own == player->cnum)) {
 156                 pr("%s does not use fuel!\n", prship(&item.ship));
 157                 continue;
 158             }
 159
 160             if (harbor) {
 161                 ship_fuel = item.ship.shp_fuel;
 162                 oil_amt = sect.sct_item[I_OIL];
 163                 pet_amt = sect.sct_item[I_PETROL];
 164                 max_amt = mp->m_fuelc - ship_fuel;
 165
 166                 if (max_amt == 0) {
 167                     pr("%s already has a full fuel load.\n",
 168                        prship(&item.ship));
 169                     continue;
 170                 }
 171                 tot_fuel = (oil_amt * 50 + pet_amt * 5);
 172                 if (tot_fuel == 0) {
 173                     pr("No fuel in the harbor at %s!\n",
 174                        xyas(sect.sct_x, sect.sct_y, player->cnum));
 175                     continue;
 176                 }
 177                 move_amt = min(tot_fuel, fuel_amt);
 178                 move_amt = min(move_amt, max_amt);
 179
 180                 if (move_amt == 0)
 181                     continue;
 182
 183                 item.ship.shp_fuel += move_amt;
 184
 185                 fueled = 1;
 186                 if ((pet_amt * 5) >= move_amt) {
 187                     extra = ((float)move_amt / 5.0) - (move_amt / 5);
 188                     if (extra > 0.0)
 189                         sect.sct_item[I_PETROL]
 190                             = max((pet_amt - move_amt / 5) - 1, 0);
 191                     else
 192                         sect.sct_item[I_PETROL]
 193                             = max((pet_amt - move_amt / 5), 0);
 194                 } else {
 195                     sect.sct_item[I_PETROL] = 0;
 196                     move_amt -= pet_amt * 5;
 197                     extra = ((float)move_amt / 50.0) - (move_amt / 50);
 198                     sect.sct_item[I_OIL] = max(oil_amt - move_amt / 50, 0);
 199                     if (extra > 0.0)
 200                         sect.sct_item[I_OIL]
 201                             = max((oil_amt - move_amt / 50) - 1, 0);
 202                     else
 203                         sect.sct_item[I_OIL]
 204                             = max((oil_amt - move_amt / 50), 0);
 205                 }
 206
 207                 /* load plague */
 208                 if (sect.sct_pstage == PLG_INFECT
 209                     && item.ship.shp_pstage == PLG_HEALTHY)
 210                     item.ship.shp_pstage = PLG_EXPOSED;
 211
 212                 putsect(&sect);
 213                 putship(item.ship.shp_uid, &item.ship);
 214             } else {            /* not in a harbor */
 215                 if (!player->argp[4])
 216                     pr("%s is not in a supplied, efficient harbor\n",
 217                        prship(&item.ship));
 218                 if (!snxtitem (&tender, EF_SHIP,
 219                                getstarg(player->argp[4], "Oiler? ", buf)))
 220                     continue;
 221
 222                 if (!check_ship_ok(&item.ship))
 223                     continue;
 224
 225                 if (!nxtitem(&tender, &item2))
 226                     continue;
 227
 228                 if (!(mchr[(int)item2.ship.shp_type].m_flags & M_OILER)) {
 229                     pr("%s is not an oiler!\n", prship(&item2.ship));
 230                     continue;
 231                 }
 232                 if (item2.ship.shp_own != player->cnum) {
 233                     pr("You don't own that oiler!\n");
 234                     continue;
 235                 }
 236
 237                 if ((item2.ship.shp_x != item.ship.shp_x) ||
 238                     (item2.ship.shp_y != item.ship.shp_y)) {
 239                     pr("Not in the same sector!\n");
 240                     continue;
 241                 }
 242                 ship_fuel = item.ship.shp_fuel;
 243                 oil_amt = item2.ship.shp_item[I_OIL];
 244                 pet_amt = item2.ship.shp_item[I_PETROL];
 245                 max_amt = mp->m_fuelc - ship_fuel;
 246
 247                 if (max_amt == 0) {
 248                     pr("%s already has a full fuel load.\n",
 249                        prship(&item.ship));
 250                     continue;
 251                 }
 252                 tot_fuel = oil_amt * 50 + pet_amt * 5;
 253                 move_amt = min(tot_fuel, fuel_amt);
 254                 move_amt = min(move_amt, max_amt);
 255
 256                 if (move_amt == 0)
 257                     continue;
 258
 259                 item.ship.shp_fuel += move_amt;
 260
 261                 fueled = 1;
 262                 if ((pet_amt * 5) >= move_amt) {
 263                     extra = ((float)move_amt / 5.0) - (move_amt / 5);
 264                     if (extra > 0.0)
 265                         item2.ship.shp_item[I_PETROL]
 266                             = max((pet_amt - move_amt / 5) - 1, 0);
 267                     else
 268                         item2.ship.shp_item[I_PETROL]
 269                             = max((pet_amt - move_amt / 5), 0);
 270                 } else {
 271                     item2.ship.shp_item[I_PETROL] = 0;
 272                     move_amt -= pet_amt * 5;
 273                     extra = ((float)move_amt / 50.0) - (move_amt / 50);
 274                     item2.ship.shp_item[I_OIL]
 275                         = max(oil_amt - (move_amt / 50), 0);
 276                     if (extra > 0.0)
 277                         item2.ship.shp_item[I_OIL]
 278                             = max((oil_amt - move_amt / 50) - 1, 0);
 279                     else
 280                         item2.ship.shp_item[I_OIL]
 281                             = max((oil_amt - move_amt / 50), 0);
 282                 }
 283
 284                 /* load plague */
 285                 if (item2.ship.shp_pstage == PLG_INFECT
 286                     && item.ship.shp_pstage == PLG_HEALTHY)
 287                     item.ship.shp_pstage = PLG_EXPOSED;
 288
 289                 putship(item.ship.shp_uid, &item.ship);
 290                 /* quick hack -KHS */
 291                 if (item.ship.shp_uid == item2.ship.shp_uid)
 292                     item2.ship.shp_fuel = item.ship.shp_fuel;
 293                 putship(item2.ship.shp_uid, &item2.ship);
 294             }
 295             pr("%s", prship(&item.ship));
 296         } else {
 297             if (item.land.lnd_own != player->cnum)
 298                 continue;
 299
 300             if (!getsect(item.land.lnd_x, item.land.lnd_y, &sect))
 301                 continue;
 302
 303             if (!player->owner)
 304                 continue;
 305
 306             lcp = &lchr[(int)item.land.lnd_type];
 307
 308             sector = 1;
 309             oil_amt = sect.sct_item[I_OIL];
 310             pet_amt = sect.sct_item[I_PETROL];
 311
 312             if ((oil_amt + pet_amt) == 0)
 313                 sector = 0;
 314
 315             if ((item.land.lnd_fuelu == 0)
 316                 && (item.land.lnd_own == player->cnum)) {
 317                 pr("%s does not use fuel!\n", prland(&item.land));
 318                 continue;
 319             }
 320
 321             if (sector) {
 322                 land_fuel = item.land.lnd_fuel;
 323                 oil_amt = sect.sct_item[I_OIL];
 324                 pet_amt = sect.sct_item[I_PETROL];
 325                 max_amt = item.land.lnd_fuelc - land_fuel;
 326
 327                 if (max_amt == 0) {
 328                     pr("%s already has a full fuel load.\n",
 329                        prland(&item.land));
 330                     continue;
 331                 }
 332                 tot_fuel = (oil_amt * 50 + pet_amt * 5);
 333                 if (tot_fuel == 0) {
 334                     pr("No fuel in the sector at %s!\n",
 335                        xyas(sect.sct_x, sect.sct_y, player->cnum));
 336                     continue;
 337                 }
 338                 move_amt = min(tot_fuel, fuel_amt);
 339                 move_amt = min(move_amt, max_amt);
 340
 341                 if (move_amt == 0)
 342                     continue;
 343
 344                 item.land.lnd_fuel += move_amt;
 345
 346                 fueled = 1;
 347                 if ((pet_amt * 5) >= move_amt) {
 348                     extra = ((float)move_amt / 5.0) - (move_amt / 5);
 349                     if (extra > 0.0)
 350                         sect.sct_item[I_PETROL]
 351                             = max((pet_amt - move_amt / 5) - 1, 0);
 352                     else
 353                         sect.sct_item[I_PETROL]
 354                             = max((pet_amt - move_amt / 5), 0);
 355                 } else {
 356                     sect.sct_item[I_PETROL] = 0;
 357                     move_amt -= pet_amt * 5;
 358                     extra = ((float)move_amt / 50.0) - (move_amt / 50);
 359                     sect.sct_item[I_OIL] = max(oil_amt - move_amt / 50, 0);
 360                     if (extra > 0.0)
 361                         sect.sct_item[I_OIL]
 362                             = max((oil_amt - move_amt / 50) - 1, 0);
 363                     else
 364                         sect.sct_item[I_OIL]
 365                             = max((oil_amt - move_amt / 50), 0);
 366                 }
 367
 368                 /* load plague */
 369                 if (sect.sct_pstage == PLG_INFECT
 370                     && item.land.lnd_pstage == PLG_HEALTHY)
 371                     item.land.lnd_pstage = PLG_EXPOSED;
 372
 373                 putsect(&sect);
 374                 putland(item.land.lnd_uid, &item.land);
 375             } else {            /* not in a sector */
 376                 if (!player->argp[4])
 377                     pr("%s is not in a supplied sector\n",
 378                        prland(&item.land));
 379                 if (!snxtitem(&ltender, EF_LAND,
 380                               getstarg(player->argp[4], "Supply unit? ",
 381                                        buf)))
 382                     continue;
 383
 384                 if (!check_land_ok(&item.land))
 385                     continue;
 386
 387                 if (!nxtitem(&ltender, &item2))
 388                     continue;
 389
 390                 if (!(lchr[(int)item2.land.lnd_type].l_flags & L_SUPPLY)) {
 391                     pr("%s is not a supply unit!\n", prland(&item2.land));
 392                     continue;
 393                 }
 394                 if (item2.land.lnd_own != player->cnum) {
 395                     pr("You don't own that unit!\n");
 396                     continue;
 397                 }
 398
 399                 if ((item2.land.lnd_x != item.land.lnd_x) ||
 400                     (item2.land.lnd_y != item.land.lnd_y)) {
 401                     pr("Not in the same sector!\n");
 402                     continue;
 403                 }
 404                 land_fuel = item.land.lnd_fuel;
 405                 oil_amt = item2.land.lnd_item[I_OIL];
 406                 pet_amt = item2.land.lnd_item[I_PETROL];
 407                 max_amt = item.land.lnd_fuelc - land_fuel;
 408
 409                 if (max_amt == 0) {
 410                     pr("%s already has a full fuel load.\n",
 411                        prland(&item.land));
 412                     continue;
 413                 }
 414                 tot_fuel = oil_amt * 50 + pet_amt * 5;
 415                 move_amt = min(tot_fuel, fuel_amt);
 416                 move_amt = min(move_amt, max_amt);
 417
 418                 if (move_amt == 0)
 419                     continue;
 420
 421                 item.land.lnd_fuel += move_amt;
 422
 423                 fueled = 1;
 424                 if ((pet_amt * 5) >= move_amt) {
 425                     extra = ((float)move_amt / 5.0) - (move_amt / 5);
 426                     if (extra > 0.0)
 427                         item2.land.lnd_item[I_PETROL]
 428                             = max((pet_amt - move_amt / 5) - 1, 0);
 429                     else
 430                         item2.land.lnd_item[I_PETROL]
 431                             = max((pet_amt - move_amt / 5), 0);
 432                 } else {
 433                     item2.land.lnd_item[I_PETROL] = 0;
 434                     move_amt -= pet_amt * 5;
 435                     extra = ((float)move_amt / 50.0) - (move_amt / 50);
 436                     item2.land.lnd_item[I_OIL]
 437                         = max(oil_amt - move_amt / 50, 0);
 438                     if (extra > 0.0)
 439                         item2.land.lnd_item[I_OIL]
 440                             = max((oil_amt - move_amt / 50) - 1, 0);
 441                     else
 442                         item2.land.lnd_item[I_OIL]
 443                             = max((oil_amt - move_amt / 50), 0);
 444                 }
 445
 446                 /* load plague */
 447                 if (item2.land.lnd_pstage == PLG_INFECT
 448                     && item.land.lnd_pstage == PLG_HEALTHY)
 449                     item.land.lnd_pstage = PLG_EXPOSED;
 450
 451                 putland(item.land.lnd_uid, &item.land);
 452                 /* quick hack -KHS */
 453                 if (item2.land.lnd_uid == item.land.lnd_uid)
 454                     item2.land.lnd_fuel = item.land.lnd_fuel;
 455                 putland(item2.land.lnd_uid, &item2.land);
 456             }
 457             pr("%s", prland(&item.land));
 458         }
 459         if (fueled) {
 460             pr(" takes on %d fuel in %s\n",
 461                move_amt,
 462                xyas(item.ship.shp_x, item.ship.shp_y, player->cnum));
 463             if (player->cnum != item.ship.shp_own)
 464                 wu(0, item.ship.shp_own,
 465                    "%s takes on %d fuel in %s courtesy of %s\n",
 466                    prship(&item.ship),
 467                    move_amt,
 468                    xyas(item.ship.shp_x, item.ship.shp_y,
 469                         item.ship.shp_own), cname(player->cnum));
 470         }
 471     }
 472     return RET_OK;
 473 }