main/mission.c

   1 /* $Id: mission.c,v 1.18 2003-01-11 02:58:33 btb Exp $ */
   2 /*
   3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   4 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   7 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   9 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
  10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  12 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  13 */
  14
  15 /*
  16  *
  17  * Code to handle multiple missions
  18  *
  19  * Old Log:
  20  * Revision 1.4  1995/10/31  10:21:40  allender
  21  * no mission support in shareware
  22  *
  23  * Revision 1.3  1995/10/21  22:53:04  allender
  24  * moved missions to data folder
  25  *
  26  * Revision 1.2  1995/09/13  08:47:29  allender
  27  * made to work with Chris' direct stuff
  28  *
  29  * Revision 1.1  1995/05/16  15:27:48  allender
  30  * Initial revision
  31  *
  32  * Revision 2.9  1995/05/26  16:16:32  john
  33  * Split SATURN into define's for requiring cd, using cd, etc.
  34  * Also started adding all the Rockwell stuff.
  35  *
  36  * Revision 2.8  1995/03/20  15:49:31  mike
  37  * Remove eof char from comment which confused make depend, causing
  38  * no mission.obj: line in makefile.  Pretty stupid tool, huh?
  39  *
  40  * Revision 2.7  1995/03/20  12:12:11  john
  41  * Added ifdef SATURN.
  42  *
  43  * Revision 2.6  1995/03/15  14:32:49  john
  44  * Added code to force the Descent CD-rom in the drive.
  45  *
  46  * Revision 2.5  1995/03/15  11:41:15  john
  47  * Better Saturn CD-ROM support.
  48  *
  49  * Revision 2.4  1995/03/14  18:24:14  john
  50  * Force Destination Saturn to use CD-ROM drive.
  51  *
  52  * Revision 2.3  1995/03/07  14:19:41  mike
  53  * More destination saturn stuff.
  54  *
  55  * Revision 2.2  1995/03/06  23:09:03  mike
  56  * more saturn stuff: make briefings work for saturn mission.
  57  *
  58  * Revision 2.1  1995/03/06  16:47:48  mike
  59  * destination saturn
  60  *
  61  * Revision 2.0  1995/02/27  11:27:49  john
  62  * New version 2.0, which has no anonymous unions, builds with
  63  * Watcom 10.0, and doesn't require parsing BITMAPS.TBL.
  64  *
  65  * Revision 1.14  1995/02/15  11:30:37  john
  66  * Fixed bug with potential mem overwrite on line 160.
  67  *
  68  * Revision 1.13  1995/02/10  17:53:20  matt
  69  * Changed mission name again
  70  *
  71  * Revision 1.12  1995/02/10  17:35:38  matt
  72  * Changed name of built-in mission
  73  *
  74  * Revision 1.11  1995/02/07  17:13:51  allender
  75  * removed return statement in load_mission so that built in mission will
  76  * actually set the Current_mission_name and _filename
  77  *
  78  * Revision 1.10  1995/01/31  01:19:45  matt
  79  * Made build_mission_list() sort missions by name
  80  *
  81  * Revision 1.9  1995/01/30  13:49:58  allender
  82  * changed build_mission_list in load_mission_by_name to include
  83  * anarchy levels.
  84  *
  85  * Revision 1.8  1995/01/30  13:03:51  matt
  86  * Fixed dumb mistake
  87  *
  88  * Revision 1.7  1995/01/30  12:55:22  matt
  89  * Added vars to point to mission names
  90  *
  91  * Revision 1.6  1995/01/22  18:57:28  matt
  92  * Made player highest level work with missions
  93  *
  94  * Revision 1.5  1995/01/22  14:13:08  matt
  95  * Added flag in mission list for anarchy-only missions
  96  *
  97  * Revision 1.4  1995/01/21  23:13:12  matt
  98  * Made high scores with (not work, really) with loaded missions
  99  * Don't give player high score when quit game
 100  *
 101  * Revision 1.3  1995/01/21  16:27:12  matt
 102  * Made endlevel briefing work with missions
 103  *
 104  * Revision 1.2  1995/01/20  22:47:50  matt
 105  * Mission system implemented, though imcompletely
 106  *
 107  * Revision 1.1  1995/01/20  13:42:19  matt
 108  * Initial revision
 109  *
 110  *
 111  */
 112
 113 #ifdef HAVE_CONFIG_H
 114 #include <conf.h>
 115 #endif
 116
 117 #include <stdio.h>
 118 #include <stdlib.h>
 119 #include <string.h>
 120 #include <ctype.h>
 121 #include <limits.h>
 122
 123 #include "pstypes.h"
 124 #include "cfile.h"
 125
 126 #include "strutil.h"
 127 #include "inferno.h"
 128 #include "mission.h"
 129 #include "gameseq.h"
 130 #include "titles.h"
 131 #include "songs.h"
 132 #include "mono.h"
 133 #include "error.h"
 134 #include "findfile.h"
 135 #include "hoard.h"
 136
 137 mle Mission_list[MAX_MISSIONS];
 138
 139 int Current_mission_num;
 140 int N_secret_levels;    // Made a global by MK for scoring purposes.  August 1, 1995.
 141 char *Current_mission_filename,*Current_mission_longname;
 142
 143 int Builtin_mission_num;
 144 char Builtin_mission_filename[9];
 145 int Builtin_mission_hogsize;
 146
 147 int D1_Builtin_mission_num;
 148 char D1_Builtin_mission_filename[9];
 149 int D1_Builtin_mission_hogsize;
 150
 151 //this stuff should get defined elsewhere
 152
 153 char Level_names[MAX_LEVELS_PER_MISSION][FILENAME_LEN];
 154 char Secret_level_names[MAX_SECRET_LEVELS_PER_MISSION][FILENAME_LEN];
 155
 156 //where the missions go
 157 #ifndef EDITOR
 158 #define MISSION_DIR "missions/"
 159 #else
 160 #define MISSION_DIR "./"
 161 #endif
 162
 163 //values for d1 built-in mission
 164 #define BIM_LAST_LEVEL          27
 165 #define BIM_LAST_SECRET_LEVEL   -3
 166 #define BIM_BRIEFING_FILE       "briefing.tex"
 167 #define BIM_ENDING_FILE         "endreg.tex"
 168
 169 //
 170 //  Special versions of mission routines for d1 builtins
 171 //
 172
 173 int load_mission_d1(int mission_num)
 174 {
 175         int i;
 176
 177         cfile_use_descent1_hogfile("descent.hog");
 178
 179         Current_mission_num = mission_num;
 180         Current_mission_filename = Mission_list[mission_num].filename;
 181         Current_mission_longname = Mission_list[mission_num].mission_name;
 182
 183         switch (D1_Builtin_mission_hogsize) {
 184         case D1_SHAREWARE_MISSION_HOGSIZE:
 185                 N_secret_levels = 0;
 186
 187                 Last_level = 7;
 188                 Last_secret_level = 0;
 189
 190                 //build level names
 191                 for (i=0;i<Last_level;i++)
 192                         sprintf(Level_names[i], "level%02d.sdl", i+1);
 193
 194                 break;
 195         case D1_MAC_SHARE_MISSION_HOGSIZE:
 196                 N_secret_levels = 0;
 197
 198                 Last_level = 3;
 199                 Last_secret_level = 0;
 200
 201                 //build level names
 202                 for (i=0;i<Last_level;i++)
 203                         sprintf(Level_names[i], "level%02d.sdl", i+1);
 204
 205                 break;
 206         default:
 207                 Int3(); // fall through
 208         case D1_MISSION_HOGSIZE:
 209         case D1_MAC_MISSION_HOGSIZE:
 210                 N_secret_levels = 3;
 211
 212                 Last_level = BIM_LAST_LEVEL;
 213                 Last_secret_level = BIM_LAST_SECRET_LEVEL;
 214
 215                 //build level names
 216                 for (i=0;i<Last_level;i++)
 217                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 218                 for (i=0;i<-Last_secret_level;i++)
 219                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 220
 221                 Secret_level_table[0] = 10;
 222                 Secret_level_table[1] = 21;
 223                 Secret_level_table[2] = 24;
 224
 225                 break;
 226         }
 227         strcpy(Briefing_text_filename,BIM_BRIEFING_FILE);
 228         strcpy(Ending_text_filename,BIM_ENDING_FILE);
 229
 230         return 1;
 231 }
 232
 233
 234 //
 235 //  Special versions of mission routines for shareware
 236 //
 237
 238 int load_mission_shareware(int mission_num)
 239 {
 240         Current_mission_num = mission_num;
 241         Current_mission_filename = Mission_list[mission_num].filename;
 242         Current_mission_longname = Mission_list[mission_num].mission_name;
 243
 244         N_secret_levels = 0;
 245
 246         Last_level = 3;
 247         Last_secret_level = 0;
 248
 249         switch (Builtin_mission_hogsize) {
 250         case MAC_SHARE_MISSION_HOGSIZE:
 251                 // mac demo is using the regular hog and rl2 files
 252                 strcpy(Level_names[0],"d2leva-1.rl2");
 253                 strcpy(Level_names[1],"d2leva-2.rl2");
 254                 strcpy(Level_names[2],"d2leva-3.rl2");
 255                 break;
 256         default:
 257                 Int3(); // fall through
 258         case SHAREWARE_MISSION_HOGSIZE:
 259                 strcpy(Level_names[0],"d2leva-1.sl2");
 260                 strcpy(Level_names[1],"d2leva-2.sl2");
 261                 strcpy(Level_names[2],"d2leva-3.sl2");
 262         }
 263
 264         return 1;
 265 }
 266
 267
 268 //
 269 //  Special versions of mission routines for Diamond/S3 version
 270 //
 271
 272 int load_mission_oem(int mission_num)
 273 {
 274         Current_mission_num = mission_num;
 275         Current_mission_filename = Mission_list[mission_num].filename;
 276         Current_mission_longname = Mission_list[mission_num].mission_name;
 277
 278         N_secret_levels = 2;
 279
 280         Last_level = 8;
 281         Last_secret_level = -2;
 282
 283         strcpy(Level_names[0],"d2leva-1.rl2");
 284         strcpy(Level_names[1],"d2leva-2.rl2");
 285         strcpy(Level_names[2],"d2leva-3.rl2");
 286         strcpy(Level_names[3],"d2leva-4.rl2");
 287
 288         strcpy(Secret_level_names[0],"d2leva-s.rl2");
 289
 290         strcpy(Level_names[4],"d2levb-1.rl2");
 291         strcpy(Level_names[5],"d2levb-2.rl2");
 292         strcpy(Level_names[6],"d2levb-3.rl2");
 293         strcpy(Level_names[7],"d2levb-4.rl2");
 294
 295         strcpy(Secret_level_names[1],"d2levb-s.rl2");
 296
 297         Secret_level_table[0] = 1;
 298         Secret_level_table[1] = 5;
 299
 300         return 1;
 301 }
 302
 303
 304 //strips damn newline from end of line
 305 char *mfgets(char *s,int n,CFILE *f)
 306 {
 307         char *r;
 308
 309         r = cfgets(s,n,f);
 310         if (r && s[strlen(s)-1] == '\n')
 311                 s[strlen(s)-1] = 0;
 312
 313         return r;
 314 }
 315
 316 //compare a string for a token. returns true if match
 317 int istok(char *buf,char *tok)
 318 {
 319         return strnicmp(buf,tok,strlen(tok)) == 0;
 320
 321 }
 322
 323 //adds a terminating 0 after a string at the first white space
 324 void add_term(char *s)
 325 {
 326         while (*s && !isspace(*s)) s++;
 327
 328         *s = 0;         //terminate!
 329 }
 330
 331 //returns ptr to string after '=' & white space, or NULL if no '='
 332 //adds 0 after parm at first white space
 333 char *get_value(char *buf)
 334 {
 335         char *t;
 336
 337         t = strchr(buf,'=')+1;
 338
 339         if (t) {
 340                 while (*t && isspace(*t)) t++;
 341
 342                 if (*t)
 343                         return t;
 344         }
 345
 346         return NULL;            //error!
 347 }
 348
 349 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 350 char *get_parm_value(char *parm,CFILE *f)
 351 {
 352         static char buf[80];
 353
 354         if (!mfgets(buf,80,f))
 355                 return NULL;
 356
 357         if (istok(buf,parm))
 358                 return get_value(buf);
 359         else
 360                 return NULL;
 361 }
 362
 363 int ml_sort_func(mle *e0,mle *e1)
 364 {
 365         return stricmp(e0->mission_name,e1->mission_name);
 366
 367 }
 368
 369 extern char CDROM_dir[];
 370
 371 //returns 1 if file read ok, else 0
 372 int read_mission_file(char *filename,int count,int location)
 373 {
 374         char filename2[100];
 375         CFILE *mfile;
 376
 377         //printf("reading: %s\n", filename);
 378
 379         switch (location) {
 380                 case ML_MISSIONDIR:
 381                         strcpy(filename2,MISSION_DIR);
 382                         break;
 383
 384                 case ML_CDROM:
 385                         songs_stop_redbook();           //so we can read from the CD
 386                         strcpy(filename2,CDROM_dir);
 387                         break;
 388
 389                 default:
 390                         Int3();         //fall through
 391
 392                 case ML_CURDIR:
 393                         strcpy(filename2,"");
 394                         break;
 395         }
 396         strcat(filename2,filename);
 397
 398         mfile = cfopen(filename2,"rb");
 399
 400         if (mfile) {
 401                 char *p;
 402                 char temp[FILENAME_LEN],*t;
 403
 404                 strcpy(temp,filename);
 405                 if ((t = strchr(temp,'.')) == NULL)
 406                         return 0;       //missing extension
 407                 // look if it's .mn2 or .msn
 408                 Mission_list[count].descent_version = (t[3] == '2') ? 2 : 1;
 409                 *t = 0;                 //kill extension
 410
 411                 strncpy( Mission_list[count].filename, temp, 9 );
 412                 Mission_list[count].anarchy_only_flag = 0;
 413                 Mission_list[count].location = location;
 414
 415                 p = get_parm_value("name",mfile);
 416
 417                 if (!p) {               //try enhanced mission
 418                         cfseek(mfile,0,SEEK_SET);
 419                         p = get_parm_value("xname",mfile);
 420                 }
 421
 422                 if (HoardEquipped())
 423                 {
 424                         if (!p) {               //try super-enhanced mission!
 425                                 cfseek(mfile,0,SEEK_SET);
 426                                 p = get_parm_value("zname",mfile);
 427                         }
 428                 }
 429
 430                 if (p) {
 431                         char *t;
 432                         if ((t=strchr(p,';'))!=NULL)
 433                                 *t=0;
 434                         t = p + strlen(p)-1;
 435                         while (isspace(*t)) t--;
 436                         strncpy(Mission_list[count].mission_name,p,MISSION_NAME_LEN);
 437                 }
 438                 else {
 439                         cfclose(mfile);
 440                         return 0;
 441                 }
 442
 443                 p = get_parm_value("type",mfile);
 444
 445                 //get mission type
 446                 if (p)
 447                         Mission_list[count].anarchy_only_flag = istok(p,"anarchy");
 448
 449                 cfclose(mfile);
 450
 451                 return 1;
 452         }
 453
 454         return 0;
 455 }
 456
 457 void add_d1_builtin_mission_to_list(int *count)
 458 {
 459         if (!cfexist("descent.hog"))
 460                 return;
 461
 462         D1_Builtin_mission_hogsize = cfile_size("descent.hog");
 463
 464         switch (D1_Builtin_mission_hogsize) {
 465         case D1_SHAREWARE_MISSION_HOGSIZE:
 466         case D1_MAC_SHARE_MISSION_HOGSIZE:
 467                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 468                 strcpy(Mission_list[*count].mission_name, D1_SHAREWARE_MISSION_NAME);
 469                 Mission_list[*count].anarchy_only_flag = 0;
 470                 break;
 471         default:
 472                 Warning("Unknown D1 hogsize %d\n", D1_Builtin_mission_hogsize);
 473                 Int3();
 474                 // fall through
 475         case D1_MISSION_HOGSIZE:
 476         case D1_MAC_MISSION_HOGSIZE:
 477                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 478                 strcpy(Mission_list[*count].mission_name, D1_MISSION_NAME);
 479                 Mission_list[*count].anarchy_only_flag = 0;
 480                 break;
 481         }
 482
 483         strcpy(D1_Builtin_mission_filename, Mission_list[*count].filename);
 484         Mission_list[*count].descent_version = 1;
 485         Mission_list[*count].anarchy_only_flag = 0;
 486         ++(*count);
 487 }
 488
 489
 490 void add_builtin_mission_to_list(int *count)
 491 {
 492         Builtin_mission_hogsize = cfile_size("descent2.hog");
 493         if (Builtin_mission_hogsize == -1)
 494                 Builtin_mission_hogsize = cfile_size("d2demo.hog");
 495
 496         switch (Builtin_mission_hogsize) {
 497         case SHAREWARE_MISSION_HOGSIZE:
 498         case MAC_SHARE_MISSION_HOGSIZE:
 499                 strcpy(Mission_list[*count].filename,SHAREWARE_MISSION_FILENAME);
 500                 strcpy(Mission_list[*count].mission_name,SHAREWARE_MISSION_NAME);
 501                 Mission_list[*count].anarchy_only_flag = 0;
 502                 break;
 503         case OEM_MISSION_HOGSIZE:
 504                 strcpy(Mission_list[*count].filename,OEM_MISSION_FILENAME);
 505                 strcpy(Mission_list[*count].mission_name,OEM_MISSION_NAME);
 506                 Mission_list[*count].anarchy_only_flag = 0;
 507                 break;
 508         default:
 509                 Warning("Unknown hogsize %d, trying %s\n", Builtin_mission_hogsize, FULL_MISSION_FILENAME ".mn2");
 510                 Int3(); //fall through
 511         case FULL_MISSION_HOGSIZE:
 512                 if (!read_mission_file(FULL_MISSION_FILENAME ".mn2", 0, ML_CURDIR))
 513                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
 514         }
 515
 516         strcpy(Builtin_mission_filename, Mission_list[*count].filename);
 517         Mission_list[*count].descent_version = 2;
 518         Mission_list[*count].anarchy_only_flag = 0;
 519         ++(*count);
 520 }
 521
 522
 523 void add_missions_to_list(char *search_name, int *count, int anarchy_mode)
 524 {
 525         FILEFINDSTRUCT find;
 526         if( !FileFindFirst( search_name, &find ) ) {
 527                 do      {
 528                         if (read_mission_file( find.name, *count, ML_MISSIONDIR )) {
 529
 530                                 if (anarchy_mode || !Mission_list[*count].anarchy_only_flag)
 531                                         ++(*count);
 532                         }
 533
 534                 } while( !FileFindNext( &find ) && *count < MAX_MISSIONS);
 535                 FileFindClose();
 536                 if (*count >= MAX_MISSIONS)
 537                         mprintf((0, "Warning: more missions than d2x can handle\n"));
 538         }
 539 }
 540
 541 /* move <mission_name> to <place> on mission list, increment <place> */
 542 void promote (char * mission_name, int * top_place, int num_missions)
 543 {
 544         int i;
 545         char name[FILENAME_LEN], * t;
 546         strcpy(name, mission_name);
 547         if ((t = strchr(name,'.')) != NULL)
 548                 *t = 0; //kill extension
 549         //printf("promoting: %s\n", name);
 550         for (i = *top_place; i < num_missions; i++)
 551                 if (!stricmp(Mission_list[i].filename, name)) {
 552                         //swap mission positions
 553                         mle temp;
 554
 555                         temp = Mission_list[*top_place];
 556                         Mission_list[*top_place] = Mission_list[i];
 557                         Mission_list[i] = temp;
 558                         ++(*top_place);
 559                         break;
 560                 }
 561 }
 562
 563
 564
 565 //fills in the global list of missions.  Returns the number of missions
 566 //in the list.  If anarchy_mode set, don't include non-anarchy levels.
 567
 568 extern char CDROM_dir[];
 569 extern char AltHogDir[];
 570 extern char AltHogdir_initialized;
 571
 572 int build_mission_list(int anarchy_mode)
 573 {
 574         static int num_missions=-1;
 575         int count = 0;
 576         int top_place;
 577
 578         //now search for levels on disk
 579
 580 //@@Took out this code because after this routine was called once for
 581 //@@a list of single-player missions, a subsequent call for a list of
 582 //@@anarchy missions would not scan again, and thus would not find the
 583 //@@anarchy-only missions.  If we retain the minimum level of install,
 584 //@@we may want to put the code back in, having it always scan for all
 585 //@@missions, and have the code that uses it sort out the ones it wants.
 586 //@@    if (num_missions != -1) {
 587 //@@            if (Current_mission_num != 0)
 588 //@@                    load_mission(0);                                //set built-in mission as default
 589 //@@            return num_missions;
 590 //@@    }
 591
 592         add_builtin_mission_to_list(&count);  //read built-in first
 593         add_d1_builtin_mission_to_list(&count);
 594         add_missions_to_list(MISSION_DIR "*.mn2", &count, anarchy_mode);
 595         add_missions_to_list(MISSION_DIR "*.msn", &count, anarchy_mode);
 596
 597         if (AltHogdir_initialized) {
 598                 char search_name[PATH_MAX + 5];
 599                 strcpy(search_name, AltHogDir);
 600                 strcat(search_name, "/" MISSION_DIR "*.mn2");
 601                 add_missions_to_list(search_name, &count, anarchy_mode);
 602                 strcpy(search_name, AltHogDir);
 603                 strcat(search_name, "/" MISSION_DIR "*.msn");
 604                 add_missions_to_list(search_name, &count, anarchy_mode);
 605         }
 606
 607         // move original missions (in story-chronological order)
 608         // to top of mission list
 609         top_place = 0;
 610         promote("descent", &top_place, count); // original descent 1 mission
 611         D1_Builtin_mission_num = top_place - 1;
 612         promote(Builtin_mission_filename, &top_place, count); // d2 or d2demo
 613         Builtin_mission_num = top_place - 1;
 614         promote("d2x", &top_place, count); // vertigo
 615
 616         if (count > top_place)
 617                 qsort(&Mission_list[top_place],
 618                       count - top_place,
 619                       sizeof(*Mission_list),
 620                                 (int (*)( const void *, const void * ))ml_sort_func);
 621
 622
 623         if (count > top_place)
 624                 qsort(&Mission_list[top_place],
 625                       count - top_place,
 626                       sizeof(*Mission_list),
 627                       (int (*)( const void *, const void * ))ml_sort_func);
 628
 629         //load_mission(0);   //set built-in mission as default
 630
 631         num_missions = count;
 632
 633         return count;
 634 }
 635
 636 void init_extra_robot_movie(char *filename);
 637
 638 //values for built-in mission
 639
 640 //loads the specfied mission from the mission list.
 641 //build_mission_list() must have been called.
 642 //Returns true if mission loaded ok, else false.
 643 int load_mission(int mission_num)
 644 {
 645         CFILE *mfile;
 646         char buf[80], *v;
 647         int found_hogfile;
 648         int enhanced_mission = 0;
 649
 650         if (mission_num == D1_Builtin_mission_num) {
 651                 cfile_use_descent1_hogfile("descent.hog");
 652                 switch (D1_Builtin_mission_hogsize) {
 653                 default:
 654                         Int3(); // fall through
 655                 case D1_MISSION_HOGSIZE:
 656                 case D1_MAC_MISSION_HOGSIZE:
 657                 case D1_SHAREWARE_MISSION_HOGSIZE:
 658                 case D1_MAC_SHARE_MISSION_HOGSIZE:
 659                         return load_mission_d1(mission_num);
 660                         break;
 661                 }
 662         }
 663
 664         if (mission_num == Builtin_mission_num) {
 665                 switch (Builtin_mission_hogsize) {
 666                 case SHAREWARE_MISSION_HOGSIZE:
 667                 case MAC_SHARE_MISSION_HOGSIZE:
 668                         return load_mission_shareware(mission_num);
 669                         break;
 670                 case OEM_MISSION_HOGSIZE:
 671                         return load_mission_oem(mission_num);
 672                         break;
 673                 default:
 674                         Int3(); // fall through
 675                 case FULL_MISSION_HOGSIZE:
 676                         // continue on... (use d2.mn2 from hogfile)
 677                         break;
 678                 }
 679         }
 680
 681         Current_mission_num = mission_num;
 682
 683         mprintf(( 0, "Loading mission %d\n", mission_num ));
 684
 685         //read mission from file
 686
 687         switch (Mission_list[mission_num].location) {
 688         case ML_MISSIONDIR:
 689                 strcpy(buf,MISSION_DIR);
 690                 break;
 691         case ML_CDROM:
 692                 strcpy(buf,CDROM_dir);
 693                 break;
 694         default:
 695                 Int3();                                                 //fall through
 696         case ML_CURDIR:
 697                 strcpy(buf,"");
 698                 break;
 699         }
 700         strcat(buf,Mission_list[mission_num].filename);
 701         if (Mission_list[mission_num].descent_version == 2)
 702                 strcat(buf,".mn2");
 703         else
 704                 strcat(buf,".msn");
 705
 706         mfile = cfopen(buf,"rb");
 707         if (mfile == NULL) {
 708                 Current_mission_num = -1;
 709                 return 0;               //error!
 710         }
 711
 712         //for non-builtin missions, load HOG
 713         if (strcmp(Mission_list[mission_num].filename, Builtin_mission_filename)) {
 714
 715                 strcpy(buf+strlen(buf)-4,".hog");               //change extension
 716
 717                 found_hogfile = cfile_use_alternate_hogfile(buf);
 718
 719                 #ifdef RELEASE                          //for release, require mission to be in hogfile
 720                 if (! found_hogfile) {
 721                         cfclose(mfile);
 722                         Current_mission_num = -1;
 723                         return 0;
 724                 }
 725                 #endif
 726
 727                 // for Descent 1 missions, load descent.hog
 728                 if (Mission_list[mission_num].descent_version == 1 && strcmp(buf, "descent.hog"))
 729                         if (!cfile_use_descent1_hogfile("descent.hog"))
 730                                 Warning("descent.hog not available, this mission may be missing some files required for briefings\n");
 731         }
 732
 733         //init vars
 734         Last_level = 0;
 735         Last_secret_level = 0;
 736         Briefing_text_filename[0] = 0;
 737         Ending_text_filename[0] = 0;
 738
 739         while (mfgets(buf,80,mfile)) {
 740
 741                 if (istok(buf,"name"))
 742                         continue;                                               //already have name, go to next line
 743                 if (istok(buf,"xname")) {
 744                         enhanced_mission = 1;
 745                         continue;                                               //already have name, go to next line
 746                 }
 747                 if (istok(buf,"zname")) {
 748                         enhanced_mission = 2;
 749                         continue;                                               //already have name, go to next line
 750                 }
 751                 else if (istok(buf,"type"))
 752                         continue;                                               //already have name, go to next line
 753                 else if (istok(buf,"hog")) {
 754                         char    *bufp = buf;
 755
 756                         while (*(bufp++) != '=')
 757                                 ;
 758
 759                         if (*bufp == ' ')
 760                                 while (*(++bufp) == ' ')
 761                                         ;
 762
 763                         cfile_use_alternate_hogfile(bufp);
 764                         mprintf((0, "Hog file override = [%s]\n", bufp));
 765                 }
 766                 else if (istok(buf,"briefing")) {
 767                         if ((v = get_value(buf)) != NULL) {
 768                                 add_term(v);
 769                                 if (strlen(v) < 13)
 770                                         strcpy(Briefing_text_filename,v);
 771                         }
 772                 }
 773                 else if (istok(buf,"ending")) {
 774                         if ((v = get_value(buf)) != NULL) {
 775                                 add_term(v);
 776                                 if (strlen(v) < 13)
 777                                         strcpy(Ending_text_filename,v);
 778                         }
 779                 }
 780                 else if (istok(buf,"num_levels")) {
 781
 782                         if ((v=get_value(buf))!=NULL) {
 783                                 int n_levels,i;
 784
 785                                 n_levels = atoi(v);
 786
 787                                 for (i=0;i<n_levels && mfgets(buf,80,mfile);i++) {
 788
 789                                         add_term(buf);
 790                                         if (strlen(buf) <= 12) {
 791                                                 strcpy(Level_names[i],buf);
 792                                                 Last_level++;
 793                                         }
 794                                         else
 795                                                 break;
 796                                 }
 797
 798                         }
 799                 }
 800                 else if (istok(buf,"num_secrets")) {
 801                         if ((v=get_value(buf))!=NULL) {
 802                                 int i;
 803
 804                                 N_secret_levels = atoi(v);
 805
 806                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 807
 808                                 for (i=0;i<N_secret_levels && mfgets(buf,80,mfile);i++) {
 809                                         char *t;
 810
 811
 812                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 813                                         else
 814                                                 break;
 815
 816                                         add_term(buf);
 817                                         if (strlen(buf) <= 12) {
 818                                                 strcpy(Secret_level_names[i],buf);
 819                                                 Secret_level_table[i] = atoi(t);
 820                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 821                                                         break;
 822                                                 Last_secret_level--;
 823                                         }
 824                                         else
 825                                                 break;
 826                                 }
 827
 828                         }
 829                 }
 830
 831         }
 832
 833         cfclose(mfile);
 834
 835         if (Last_level <= 0) {
 836                 Current_mission_num = -1;               //no valid mission loaded
 837                 return 0;
 838         }
 839
 840         Current_mission_filename = Mission_list[Current_mission_num].filename;
 841         Current_mission_longname = Mission_list[Current_mission_num].mission_name;
 842
 843         if (enhanced_mission) {
 844                 char t[50];
 845                 extern void bm_read_extra_robots();
 846                 sprintf(t,"%s.ham",Current_mission_filename);
 847                 bm_read_extra_robots(t,enhanced_mission);
 848                 strncpy(t,Current_mission_filename,6);
 849                 strcat(t,"-l.mvl");
 850                 init_extra_robot_movie(t);
 851         }
 852
 853         return 1;
 854 }
 855
 856 //loads the named mission if exists.
 857 //Returns true if mission loaded ok, else false.
 858 int load_mission_by_name(char *mission_name)
 859 {
 860         int n,i;
 861
 862         n = build_mission_list(1);
 863
 864         for (i=0;i<n;i++)
 865                 if (!stricmp(mission_name,Mission_list[i].filename))
 866                         return load_mission(i);
 867
 868         return 0;               //couldn't find mission
 869 }