main/mission.c

   1 /* $Id: mission.c,v 1.26 2004-08-29 17:57:23 schaffner 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  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include <conf.h>
  23 #endif
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <ctype.h>
  29 #include <limits.h>
  30
  31 #include "pstypes.h"
  32 #include "cfile.h"
  33
  34 #include "strutil.h"
  35 #include "inferno.h"
  36 #include "mission.h"
  37 #include "gameseq.h"
  38 #include "titles.h"
  39 #include "songs.h"
  40 #include "mono.h"
  41 #include "error.h"
  42 #include "findfile.h"
  43
  44 mle Mission_list[MAX_MISSIONS];
  45
  46 int Current_mission_num;
  47 int N_secret_levels;    // Made a global by MK for scoring purposes.  August 1, 1995.
  48 char *Current_mission_filename,*Current_mission_longname;
  49
  50 int Builtin_mission_num;
  51 char Builtin_mission_filename[9];
  52 int Builtin_mission_hogsize;
  53
  54 int D1_Builtin_mission_num;
  55 char D1_Builtin_mission_filename[9];
  56 int D1_Builtin_mission_hogsize;
  57
  58 //this stuff should get defined elsewhere
  59
  60 char Level_names[MAX_LEVELS_PER_MISSION][FILENAME_LEN];
  61 char Secret_level_names[MAX_SECRET_LEVELS_PER_MISSION][FILENAME_LEN];
  62
  63 //values for d1 built-in mission
  64 #define BIM_LAST_LEVEL          27
  65 #define BIM_LAST_SECRET_LEVEL   -3
  66 #define BIM_BRIEFING_FILE       "briefing.tex"
  67 #define BIM_ENDING_FILE         "endreg.tex"
  68
  69 //
  70 //  Special versions of mission routines for d1 builtins
  71 //
  72
  73 int load_mission_d1(int mission_num)
  74 {
  75         int i;
  76
  77         cfile_use_descent1_hogfile("descent.hog");
  78
  79         Current_mission_num = mission_num;
  80         Current_mission_filename = Mission_list[mission_num].filename;
  81         Current_mission_longname = Mission_list[mission_num].mission_name;
  82
  83         switch (D1_Builtin_mission_hogsize) {
  84         case D1_SHAREWARE_MISSION_HOGSIZE:
  85         case D1_SHAREWARE_10_MISSION_HOGSIZE:
  86                 N_secret_levels = 0;
  87
  88                 Last_level = 7;
  89                 Last_secret_level = 0;
  90
  91                 //build level names
  92                 for (i=0;i<Last_level;i++)
  93                         sprintf(Level_names[i], "level%02d.sdl", i+1);
  94
  95                 break;
  96         case D1_MAC_SHARE_MISSION_HOGSIZE:
  97                 N_secret_levels = 0;
  98
  99                 Last_level = 3;
 100                 Last_secret_level = 0;
 101
 102                 //build level names
 103                 for (i=0;i<Last_level;i++)
 104                         sprintf(Level_names[i], "level%02d.sdl", i+1);
 105
 106                 break;
 107         case D1_OEM_MISSION_HOGSIZE:
 108         case D1_OEM_10_MISSION_HOGSIZE:
 109                 N_secret_levels = 1;
 110
 111                 Last_level = 15;
 112                 Last_secret_level = -1;
 113
 114                 //build level names
 115                 for (i=0; i < Last_level - 1; i++)
 116                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 117                 sprintf(Level_names[i], "saturn%02d.rdl", i+1);
 118                 for (i=0; i < -Last_secret_level; i++)
 119                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 120
 121                 Secret_level_table[0] = 10;
 122
 123                 break;
 124         default:
 125                 Int3(); // fall through
 126         case D1_MISSION_HOGSIZE:
 127         case D1_10_MISSION_HOGSIZE:
 128         case D1_MAC_MISSION_HOGSIZE:
 129                 N_secret_levels = 3;
 130
 131                 Last_level = BIM_LAST_LEVEL;
 132                 Last_secret_level = BIM_LAST_SECRET_LEVEL;
 133
 134                 //build level names
 135                 for (i=0;i<Last_level;i++)
 136                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 137                 for (i=0;i<-Last_secret_level;i++)
 138                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 139
 140                 Secret_level_table[0] = 10;
 141                 Secret_level_table[1] = 21;
 142                 Secret_level_table[2] = 24;
 143
 144                 break;
 145         }
 146         strcpy(Briefing_text_filename,BIM_BRIEFING_FILE);
 147         strcpy(Ending_text_filename,BIM_ENDING_FILE);
 148
 149         return 1;
 150 }
 151
 152
 153 //
 154 //  Special versions of mission routines for shareware
 155 //
 156
 157 int load_mission_shareware(int mission_num)
 158 {
 159         Current_mission_num = mission_num;
 160         Current_mission_filename = Mission_list[mission_num].filename;
 161         Current_mission_longname = Mission_list[mission_num].mission_name;
 162
 163         switch (Builtin_mission_hogsize) {
 164         case MAC_SHARE_MISSION_HOGSIZE:
 165                 N_secret_levels = 1;
 166
 167                 Last_level = 4;
 168                 Last_secret_level = -1;
 169
 170                 // mac demo is using the regular hog and rl2 files
 171                 strcpy(Level_names[0],"d2leva-1.rl2");
 172                 strcpy(Level_names[1],"d2leva-2.rl2");
 173                 strcpy(Level_names[2],"d2leva-3.rl2");
 174                 strcpy(Level_names[3],"d2leva-4.rl2");
 175                 strcpy(Secret_level_names[0],"d2leva-s.rl2");
 176                 break;
 177         default:
 178                 Int3(); // fall through
 179         case SHAREWARE_MISSION_HOGSIZE:
 180                 N_secret_levels = 0;
 181
 182                 Last_level = 3;
 183                 Last_secret_level = 0;
 184
 185                 strcpy(Level_names[0],"d2leva-1.sl2");
 186                 strcpy(Level_names[1],"d2leva-2.sl2");
 187                 strcpy(Level_names[2],"d2leva-3.sl2");
 188         }
 189
 190         return 1;
 191 }
 192
 193
 194 //
 195 //  Special versions of mission routines for Diamond/S3 version
 196 //
 197
 198 int load_mission_oem(int mission_num)
 199 {
 200         Current_mission_num = mission_num;
 201         Current_mission_filename = Mission_list[mission_num].filename;
 202         Current_mission_longname = Mission_list[mission_num].mission_name;
 203
 204         N_secret_levels = 2;
 205
 206         Last_level = 8;
 207         Last_secret_level = -2;
 208
 209         strcpy(Level_names[0],"d2leva-1.rl2");
 210         strcpy(Level_names[1],"d2leva-2.rl2");
 211         strcpy(Level_names[2],"d2leva-3.rl2");
 212         strcpy(Level_names[3],"d2leva-4.rl2");
 213
 214         strcpy(Secret_level_names[0],"d2leva-s.rl2");
 215
 216         strcpy(Level_names[4],"d2levb-1.rl2");
 217         strcpy(Level_names[5],"d2levb-2.rl2");
 218         strcpy(Level_names[6],"d2levb-3.rl2");
 219         strcpy(Level_names[7],"d2levb-4.rl2");
 220
 221         strcpy(Secret_level_names[1],"d2levb-s.rl2");
 222
 223         Secret_level_table[0] = 1;
 224         Secret_level_table[1] = 5;
 225
 226         return 1;
 227 }
 228
 229
 230 //compare a string for a token. returns true if match
 231 int istok(char *buf,char *tok)
 232 {
 233         return strnicmp(buf,tok,strlen(tok)) == 0;
 234
 235 }
 236
 237 //adds a terminating 0 after a string at the first white space
 238 void add_term(char *s)
 239 {
 240         while (*s && !isspace(*s)) s++;
 241
 242         *s = 0;         //terminate!
 243 }
 244
 245 //returns ptr to string after '=' & white space, or NULL if no '='
 246 //adds 0 after parm at first white space
 247 char *get_value(char *buf)
 248 {
 249         char *t;
 250
 251         t = strchr(buf,'=')+1;
 252
 253         if (t) {
 254                 while (*t && isspace(*t)) t++;
 255
 256                 if (*t)
 257                         return t;
 258         }
 259
 260         return NULL;            //error!
 261 }
 262
 263 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 264 char *get_parm_value(char *parm,CFILE *f)
 265 {
 266         static char buf[80];
 267
 268         if (!cfgets(buf,80,f))
 269                 return NULL;
 270
 271         if (istok(buf,parm))
 272                 return get_value(buf);
 273         else
 274                 return NULL;
 275 }
 276
 277 int ml_sort_func(mle *e0,mle *e1)
 278 {
 279         return stricmp(e0->mission_name,e1->mission_name);
 280
 281 }
 282
 283 extern char CDROM_dir[];
 284
 285 //returns 1 if file read ok, else 0
 286 int read_mission_file(char *filename,int count,int location)
 287 {
 288         char filename2[100];
 289         CFILE *mfile;
 290
 291         //printf("reading: %s\n", filename);
 292
 293         switch (location) {
 294                 case ML_MISSIONDIR:
 295                         strcpy(filename2,MISSION_DIR);
 296                         break;
 297
 298                 case ML_CDROM:
 299                         songs_stop_redbook();           //so we can read from the CD
 300                         strcpy(filename2,CDROM_dir);
 301                         break;
 302
 303                 default:
 304                         Int3();         //fall through
 305
 306                 case ML_CURDIR:
 307                         strcpy(filename2,"");
 308                         break;
 309         }
 310         strcat(filename2,filename);
 311
 312         mfile = cfopen(filename2,"rb");
 313
 314         if (mfile) {
 315                 char *p;
 316                 char temp[FILENAME_LEN],*t;
 317
 318                 strcpy(temp,filename);
 319                 if ((t = strchr(temp,'.')) == NULL)
 320                         return 0;       //missing extension
 321                 // look if it's .mn2 or .msn
 322                 Mission_list[count].descent_version = (t[3] == '2') ? 2 : 1;
 323                 *t = 0;                 //kill extension
 324
 325                 strncpy( Mission_list[count].filename, temp, 9 );
 326                 Mission_list[count].anarchy_only_flag = 0;
 327                 Mission_list[count].location = location;
 328
 329                 p = get_parm_value("name",mfile);
 330
 331                 if (!p) {               //try enhanced mission
 332                         cfseek(mfile,0,SEEK_SET);
 333                         p = get_parm_value("xname",mfile);
 334                 }
 335
 336                 if (!p) {       //try super-enhanced mission!
 337                         cfseek(mfile,0,SEEK_SET);
 338                         p = get_parm_value("zname",mfile);
 339                 }
 340
 341                 if (p) {
 342                         char *t;
 343                         if ((t=strchr(p,';'))!=NULL)
 344                                 *t=0;
 345                         t = p + strlen(p)-1;
 346                         while (isspace(*t)) t--;
 347                         strncpy(Mission_list[count].mission_name,p,MISSION_NAME_LEN);
 348                 }
 349                 else {
 350                         cfclose(mfile);
 351                         return 0;
 352                 }
 353
 354                 p = get_parm_value("type",mfile);
 355
 356                 //get mission type
 357                 if (p)
 358                         Mission_list[count].anarchy_only_flag = istok(p,"anarchy");
 359
 360                 cfclose(mfile);
 361
 362                 return 1;
 363         }
 364
 365         return 0;
 366 }
 367
 368 void add_d1_builtin_mission_to_list(int *count)
 369 {
 370         if (!cfexist("descent.hog"))
 371                 return;
 372
 373         D1_Builtin_mission_hogsize = cfile_size("descent.hog");
 374
 375         switch (D1_Builtin_mission_hogsize) {
 376         case D1_SHAREWARE_MISSION_HOGSIZE:
 377         case D1_SHAREWARE_10_MISSION_HOGSIZE:
 378         case D1_MAC_SHARE_MISSION_HOGSIZE:
 379                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 380                 strcpy(Mission_list[*count].mission_name, D1_SHAREWARE_MISSION_NAME);
 381                 Mission_list[*count].anarchy_only_flag = 0;
 382                 break;
 383         case D1_OEM_MISSION_HOGSIZE:
 384         case D1_OEM_10_MISSION_HOGSIZE:
 385                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 386                 strcpy(Mission_list[*count].mission_name, D1_OEM_MISSION_NAME);
 387                 Mission_list[*count].anarchy_only_flag = 0;
 388                 break;
 389         default:
 390                 Warning("Unknown D1 hogsize %d\n", D1_Builtin_mission_hogsize);
 391                 Int3();
 392                 // fall through
 393         case D1_MISSION_HOGSIZE:
 394         case D1_10_MISSION_HOGSIZE:
 395         case D1_MAC_MISSION_HOGSIZE:
 396                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 397                 strcpy(Mission_list[*count].mission_name, D1_MISSION_NAME);
 398                 Mission_list[*count].anarchy_only_flag = 0;
 399                 break;
 400         }
 401
 402         strcpy(D1_Builtin_mission_filename, Mission_list[*count].filename);
 403         Mission_list[*count].descent_version = 1;
 404         Mission_list[*count].anarchy_only_flag = 0;
 405         ++(*count);
 406 }
 407
 408
 409 void add_builtin_mission_to_list(int *count)
 410 {
 411         Builtin_mission_hogsize = cfile_size("descent2.hog");
 412         if (Builtin_mission_hogsize == -1)
 413                 Builtin_mission_hogsize = cfile_size("d2demo.hog");
 414
 415         switch (Builtin_mission_hogsize) {
 416         case SHAREWARE_MISSION_HOGSIZE:
 417         case MAC_SHARE_MISSION_HOGSIZE:
 418                 strcpy(Mission_list[*count].filename,SHAREWARE_MISSION_FILENAME);
 419                 strcpy(Mission_list[*count].mission_name,SHAREWARE_MISSION_NAME);
 420                 Mission_list[*count].anarchy_only_flag = 0;
 421                 break;
 422         case OEM_MISSION_HOGSIZE:
 423                 strcpy(Mission_list[*count].filename,OEM_MISSION_FILENAME);
 424                 strcpy(Mission_list[*count].mission_name,OEM_MISSION_NAME);
 425                 Mission_list[*count].anarchy_only_flag = 0;
 426                 break;
 427         default:
 428                 Warning("Unknown hogsize %d, trying %s\n", Builtin_mission_hogsize, FULL_MISSION_FILENAME ".mn2");
 429                 Int3(); //fall through
 430         case FULL_MISSION_HOGSIZE:
 431         case FULL_10_MISSION_HOGSIZE:
 432         case MAC_FULL_MISSION_HOGSIZE:
 433                 if (!read_mission_file(FULL_MISSION_FILENAME ".mn2", 0, ML_CURDIR))
 434                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
 435         }
 436
 437         strcpy(Builtin_mission_filename, Mission_list[*count].filename);
 438         Mission_list[*count].descent_version = 2;
 439         Mission_list[*count].anarchy_only_flag = 0;
 440         ++(*count);
 441 }
 442
 443
 444 void add_missions_to_list(char *search_name, int *count, int anarchy_mode)
 445 {
 446         FILEFINDSTRUCT find;
 447         if( !FileFindFirst( search_name, &find ) ) {
 448                 do      {
 449                         if (read_mission_file( find.name, *count, ML_MISSIONDIR )) {
 450
 451                                 if (anarchy_mode || !Mission_list[*count].anarchy_only_flag)
 452                                         ++(*count);
 453                         }
 454
 455                 } while( !FileFindNext( &find ) && *count < MAX_MISSIONS);
 456                 FileFindClose();
 457                 if (*count >= MAX_MISSIONS)
 458                         mprintf((0, "Warning: more missions than d2x can handle\n"));
 459         }
 460 }
 461
 462 /* move <mission_name> to <place> on mission list, increment <place> */
 463 void promote (char * mission_name, int * top_place, int num_missions)
 464 {
 465         int i;
 466         char name[FILENAME_LEN], * t;
 467         strcpy(name, mission_name);
 468         if ((t = strchr(name,'.')) != NULL)
 469                 *t = 0; //kill extension
 470         //printf("promoting: %s\n", name);
 471         for (i = *top_place; i < num_missions; i++)
 472                 if (!stricmp(Mission_list[i].filename, name)) {
 473                         //swap mission positions
 474                         mle temp;
 475
 476                         temp = Mission_list[*top_place];
 477                         Mission_list[*top_place] = Mission_list[i];
 478                         Mission_list[i] = temp;
 479                         ++(*top_place);
 480                         break;
 481                 }
 482 }
 483
 484
 485
 486 //fills in the global list of missions.  Returns the number of missions
 487 //in the list.  If anarchy_mode set, don't include non-anarchy levels.
 488
 489 extern char CDROM_dir[];
 490 extern char AltHogDir[];
 491 extern char AltHogdir_initialized;
 492
 493 int build_mission_list(int anarchy_mode)
 494 {
 495         static int num_missions=-1;
 496         int count = 0;
 497         int top_place;
 498
 499         //now search for levels on disk
 500
 501 //@@Took out this code because after this routine was called once for
 502 //@@a list of single-player missions, a subsequent call for a list of
 503 //@@anarchy missions would not scan again, and thus would not find the
 504 //@@anarchy-only missions.  If we retain the minimum level of install,
 505 //@@we may want to put the code back in, having it always scan for all
 506 //@@missions, and have the code that uses it sort out the ones it wants.
 507 //@@    if (num_missions != -1) {
 508 //@@            if (Current_mission_num != 0)
 509 //@@                    load_mission(0);                                //set built-in mission as default
 510 //@@            return num_missions;
 511 //@@    }
 512
 513         add_builtin_mission_to_list(&count);  //read built-in first
 514         add_d1_builtin_mission_to_list(&count);
 515         add_missions_to_list(MISSION_DIR "*.mn2", &count, anarchy_mode);
 516         add_missions_to_list(MISSION_DIR "*.msn", &count, anarchy_mode);
 517
 518         if (AltHogdir_initialized) {
 519                 char search_name[PATH_MAX + 5];
 520                 strcpy(search_name, AltHogDir);
 521                 strcat(search_name, "/" MISSION_DIR "*.mn2");
 522                 add_missions_to_list(search_name, &count, anarchy_mode);
 523                 strcpy(search_name, AltHogDir);
 524                 strcat(search_name, "/" MISSION_DIR "*.msn");
 525                 add_missions_to_list(search_name, &count, anarchy_mode);
 526         }
 527
 528         // move original missions (in story-chronological order)
 529         // to top of mission list
 530         top_place = 0;
 531         promote("descent", &top_place, count); // original descent 1 mission
 532         D1_Builtin_mission_num = top_place - 1;
 533         promote(Builtin_mission_filename, &top_place, count); // d2 or d2demo
 534         Builtin_mission_num = top_place - 1;
 535         promote("d2x", &top_place, count); // vertigo
 536
 537         if (count > top_place)
 538                 qsort(&Mission_list[top_place],
 539                       count - top_place,
 540                       sizeof(*Mission_list),
 541                                 (int (*)( const void *, const void * ))ml_sort_func);
 542
 543
 544         if (count > top_place)
 545                 qsort(&Mission_list[top_place],
 546                       count - top_place,
 547                       sizeof(*Mission_list),
 548                       (int (*)( const void *, const void * ))ml_sort_func);
 549
 550         //load_mission(0);   //set built-in mission as default
 551
 552         num_missions = count;
 553
 554         return count;
 555 }
 556
 557 void init_extra_robot_movie(char *filename);
 558
 559 //values for built-in mission
 560
 561 //loads the specfied mission from the mission list.
 562 //build_mission_list() must have been called.
 563 //Returns true if mission loaded ok, else false.
 564 int load_mission(int mission_num)
 565 {
 566         CFILE *mfile;
 567         char buf[80], *v;
 568         int found_hogfile;
 569         int enhanced_mission = 0;
 570
 571         if (mission_num == D1_Builtin_mission_num) {
 572                 cfile_use_descent1_hogfile("descent.hog");
 573                 switch (D1_Builtin_mission_hogsize) {
 574                 default:
 575                         Int3(); // fall through
 576                 case D1_MISSION_HOGSIZE:
 577                 case D1_10_MISSION_HOGSIZE:
 578                 case D1_MAC_MISSION_HOGSIZE:
 579                 case D1_OEM_MISSION_HOGSIZE:
 580                 case D1_OEM_10_MISSION_HOGSIZE:
 581                 case D1_SHAREWARE_MISSION_HOGSIZE:
 582                 case D1_SHAREWARE_10_MISSION_HOGSIZE:
 583                 case D1_MAC_SHARE_MISSION_HOGSIZE:
 584                         return load_mission_d1(mission_num);
 585                         break;
 586                 }
 587         }
 588
 589         if (mission_num == Builtin_mission_num) {
 590                 switch (Builtin_mission_hogsize) {
 591                 case SHAREWARE_MISSION_HOGSIZE:
 592                 case MAC_SHARE_MISSION_HOGSIZE:
 593                         return load_mission_shareware(mission_num);
 594                         break;
 595                 case OEM_MISSION_HOGSIZE:
 596                         return load_mission_oem(mission_num);
 597                         break;
 598                 default:
 599                         Int3(); // fall through
 600                 case FULL_MISSION_HOGSIZE:
 601                 case FULL_10_MISSION_HOGSIZE:
 602                 case MAC_FULL_MISSION_HOGSIZE:
 603                         // continue on... (use d2.mn2 from hogfile)
 604                         break;
 605                 }
 606         }
 607
 608         Current_mission_num = mission_num;
 609
 610         mprintf(( 0, "Loading mission %d\n", mission_num ));
 611
 612         //read mission from file
 613
 614         switch (Mission_list[mission_num].location) {
 615         case ML_MISSIONDIR:
 616                 strcpy(buf,MISSION_DIR);
 617                 break;
 618         case ML_CDROM:
 619                 strcpy(buf,CDROM_dir);
 620                 break;
 621         default:
 622                 Int3();                                                 //fall through
 623         case ML_CURDIR:
 624                 strcpy(buf,"");
 625                 break;
 626         }
 627         strcat(buf,Mission_list[mission_num].filename);
 628         if (Mission_list[mission_num].descent_version == 2)
 629                 strcat(buf,".mn2");
 630         else
 631                 strcat(buf,".msn");
 632
 633         mfile = cfopen(buf,"rb");
 634         if (mfile == NULL) {
 635                 Current_mission_num = -1;
 636                 return 0;               //error!
 637         }
 638
 639         //for non-builtin missions, load HOG
 640         if (strcmp(Mission_list[mission_num].filename, Builtin_mission_filename)) {
 641
 642                 strcpy(buf+strlen(buf)-4,".hog");               //change extension
 643
 644                 found_hogfile = cfile_use_alternate_hogfile(buf);
 645
 646                 #ifdef RELEASE                          //for release, require mission to be in hogfile
 647                 if (! found_hogfile) {
 648                         cfclose(mfile);
 649                         Current_mission_num = -1;
 650                         return 0;
 651                 }
 652                 #endif
 653
 654                 // for Descent 1 missions, load descent.hog
 655                 if (Mission_list[mission_num].descent_version == 1 && strcmp(buf, "descent.hog"))
 656                         if (!cfile_use_descent1_hogfile("descent.hog"))
 657                                 Warning("descent.hog not available, this mission may be missing some files required for briefings and exit sequence\n");
 658         }
 659
 660         //init vars
 661         Last_level = 0;
 662         Last_secret_level = 0;
 663         Briefing_text_filename[0] = 0;
 664         Ending_text_filename[0] = 0;
 665
 666         while (cfgets(buf,80,mfile)) {
 667
 668                 if (istok(buf,"name"))
 669                         continue;                                               //already have name, go to next line
 670                 if (istok(buf,"xname")) {
 671                         enhanced_mission = 1;
 672                         continue;                                               //already have name, go to next line
 673                 }
 674                 if (istok(buf,"zname")) {
 675                         enhanced_mission = 2;
 676                         continue;                                               //already have name, go to next line
 677                 }
 678                 else if (istok(buf,"type"))
 679                         continue;                                               //already have name, go to next line
 680                 else if (istok(buf,"hog")) {
 681                         char    *bufp = buf;
 682
 683                         while (*(bufp++) != '=')
 684                                 ;
 685
 686                         if (*bufp == ' ')
 687                                 while (*(++bufp) == ' ')
 688                                         ;
 689
 690                         cfile_use_alternate_hogfile(bufp);
 691                         mprintf((0, "Hog file override = [%s]\n", bufp));
 692                 }
 693                 else if (istok(buf,"briefing")) {
 694                         if ((v = get_value(buf)) != NULL) {
 695                                 add_term(v);
 696                                 if (strlen(v) < 13)
 697                                         strcpy(Briefing_text_filename,v);
 698                         }
 699                 }
 700                 else if (istok(buf,"ending")) {
 701                         if ((v = get_value(buf)) != NULL) {
 702                                 add_term(v);
 703                                 if (strlen(v) < 13)
 704                                         strcpy(Ending_text_filename,v);
 705                         }
 706                 }
 707                 else if (istok(buf,"num_levels")) {
 708
 709                         if ((v=get_value(buf))!=NULL) {
 710                                 int n_levels,i;
 711
 712                                 n_levels = atoi(v);
 713
 714                                 for (i=0;i<n_levels && cfgets(buf,80,mfile);i++) {
 715
 716                                         add_term(buf);
 717                                         if (strlen(buf) <= 12) {
 718                                                 strcpy(Level_names[i],buf);
 719                                                 Last_level++;
 720                                         }
 721                                         else
 722                                                 break;
 723                                 }
 724
 725                         }
 726                 }
 727                 else if (istok(buf,"num_secrets")) {
 728                         if ((v=get_value(buf))!=NULL) {
 729                                 int i;
 730
 731                                 N_secret_levels = atoi(v);
 732
 733                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 734
 735                                 for (i=0;i<N_secret_levels && cfgets(buf,80,mfile);i++) {
 736                                         char *t;
 737
 738
 739                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 740                                         else
 741                                                 break;
 742
 743                                         add_term(buf);
 744                                         if (strlen(buf) <= 12) {
 745                                                 strcpy(Secret_level_names[i],buf);
 746                                                 Secret_level_table[i] = atoi(t);
 747                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 748                                                         break;
 749                                                 Last_secret_level--;
 750                                         }
 751                                         else
 752                                                 break;
 753                                 }
 754
 755                         }
 756                 }
 757
 758         }
 759
 760         cfclose(mfile);
 761
 762         if (Last_level <= 0) {
 763                 Current_mission_num = -1;               //no valid mission loaded
 764                 return 0;
 765         }
 766
 767         Current_mission_filename = Mission_list[Current_mission_num].filename;
 768         Current_mission_longname = Mission_list[Current_mission_num].mission_name;
 769
 770         if (enhanced_mission) {
 771                 char t[50];
 772                 extern void bm_read_extra_robots();
 773                 sprintf(t,"%s.ham",Current_mission_filename);
 774                 bm_read_extra_robots(t,enhanced_mission);
 775                 strncpy(t,Current_mission_filename,6);
 776                 strcat(t,"-l.mvl");
 777                 init_extra_robot_movie(t);
 778         }
 779
 780         return 1;
 781 }
 782
 783 //loads the named mission if exists.
 784 //Returns true if mission loaded ok, else false.
 785 int load_mission_by_name(char *mission_name)
 786 {
 787         int n,i;
 788
 789         n = build_mission_list(1);
 790
 791         for (i=0;i<n;i++)
 792                 if (!stricmp(mission_name,Mission_list[i].filename))
 793                         return load_mission(i);
 794
 795         return 0;               //couldn't find mission
 796 }