main/mission.c

   1 /* $Id: mission.c,v 1.16 2003-01-06 23:06:18 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, Builtin_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 char Builtin_mission_filename[9];
 144 int Builtin_mission_hogsize;
 145
 146 //this stuff should get defined elsewhere
 147
 148 char Level_names[MAX_LEVELS_PER_MISSION][FILENAME_LEN];
 149 char Secret_level_names[MAX_SECRET_LEVELS_PER_MISSION][FILENAME_LEN];
 150
 151 //where the missions go
 152 #ifndef EDITOR
 153 #define MISSION_DIR "missions/"
 154 #else
 155 #define MISSION_DIR "./"
 156 #endif
 157
 158 //
 159 //  Special versions of mission routines for shareware
 160 //
 161
 162 int load_mission_shareware(int mission_num)
 163 {
 164         Current_mission_num = mission_num;
 165         Current_mission_filename = Mission_list[mission_num].filename;
 166         Current_mission_longname = Mission_list[mission_num].mission_name;
 167
 168         N_secret_levels = 0;
 169
 170         Last_level = 3;
 171         Last_secret_level = 0;
 172
 173         switch (Builtin_mission_hogsize) {
 174         case MAC_SHARE_MISSION_HOGSIZE:
 175                 // mac demo is using the regular hog and rl2 files
 176                 strcpy(Level_names[0],"d2leva-1.rl2");
 177                 strcpy(Level_names[1],"d2leva-2.rl2");
 178                 strcpy(Level_names[2],"d2leva-3.rl2");
 179                 break;
 180         default:
 181                 Int3(); // fall through
 182         case SHAREWARE_MISSION_HOGSIZE:
 183                 strcpy(Level_names[0],"d2leva-1.sl2");
 184                 strcpy(Level_names[1],"d2leva-2.sl2");
 185                 strcpy(Level_names[2],"d2leva-3.sl2");
 186         }
 187
 188         return 1;
 189 }
 190
 191
 192 //
 193 //  Special versions of mission routines for Diamond/S3 version
 194 //
 195
 196 int load_mission_oem(int mission_num)
 197 {
 198         Current_mission_num = mission_num;
 199         Current_mission_filename = Mission_list[mission_num].filename;
 200         Current_mission_longname = Mission_list[mission_num].mission_name;
 201
 202         N_secret_levels = 2;
 203
 204         Last_level = 8;
 205         Last_secret_level = -2;
 206
 207         strcpy(Level_names[0],"d2leva-1.rl2");
 208         strcpy(Level_names[1],"d2leva-2.rl2");
 209         strcpy(Level_names[2],"d2leva-3.rl2");
 210         strcpy(Level_names[3],"d2leva-4.rl2");
 211
 212         strcpy(Secret_level_names[0],"d2leva-s.rl2");
 213
 214         strcpy(Level_names[4],"d2levb-1.rl2");
 215         strcpy(Level_names[5],"d2levb-2.rl2");
 216         strcpy(Level_names[6],"d2levb-3.rl2");
 217         strcpy(Level_names[7],"d2levb-4.rl2");
 218
 219         strcpy(Secret_level_names[1],"d2levb-s.rl2");
 220
 221         Secret_level_table[0] = 1;
 222         Secret_level_table[1] = 5;
 223
 224         return 1;
 225 }
 226
 227
 228 //strips damn newline from end of line
 229 char *mfgets(char *s,int n,CFILE *f)
 230 {
 231         char *r;
 232
 233         r = cfgets(s,n,f);
 234         if (r && s[strlen(s)-1] == '\n')
 235                 s[strlen(s)-1] = 0;
 236
 237         return r;
 238 }
 239
 240 //compare a string for a token. returns true if match
 241 int istok(char *buf,char *tok)
 242 {
 243         return strnicmp(buf,tok,strlen(tok)) == 0;
 244
 245 }
 246
 247 //adds a terminating 0 after a string at the first white space
 248 void add_term(char *s)
 249 {
 250         while (*s && !isspace(*s)) s++;
 251
 252         *s = 0;         //terminate!
 253 }
 254
 255 //returns ptr to string after '=' & white space, or NULL if no '='
 256 //adds 0 after parm at first white space
 257 char *get_value(char *buf)
 258 {
 259         char *t;
 260
 261         t = strchr(buf,'=')+1;
 262
 263         if (t) {
 264                 while (*t && isspace(*t)) t++;
 265
 266                 if (*t)
 267                         return t;
 268         }
 269
 270         return NULL;            //error!
 271 }
 272
 273 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 274 char *get_parm_value(char *parm,CFILE *f)
 275 {
 276         static char buf[80];
 277
 278         if (!mfgets(buf,80,f))
 279                 return NULL;
 280
 281         if (istok(buf,parm))
 282                 return get_value(buf);
 283         else
 284                 return NULL;
 285 }
 286
 287 int ml_sort_func(mle *e0,mle *e1)
 288 {
 289         return stricmp(e0->mission_name,e1->mission_name);
 290
 291 }
 292
 293 extern char CDROM_dir[];
 294
 295 //returns 1 if file read ok, else 0
 296 int read_mission_file(char *filename,int count,int location)
 297 {
 298         char filename2[100];
 299         CFILE *mfile;
 300
 301         //printf("reading: %s\n", filename);
 302
 303         switch (location) {
 304                 case ML_MISSIONDIR:
 305                         strcpy(filename2,MISSION_DIR);
 306                         break;
 307
 308                 case ML_CDROM:
 309                         songs_stop_redbook();           //so we can read from the CD
 310                         strcpy(filename2,CDROM_dir);
 311                         break;
 312
 313                 default:
 314                         Int3();         //fall through
 315
 316                 case ML_CURDIR:
 317                         strcpy(filename2,"");
 318                         break;
 319         }
 320         strcat(filename2,filename);
 321
 322         mfile = cfopen(filename2,"rb");
 323
 324         if (mfile) {
 325                 char *p;
 326                 char temp[FILENAME_LEN],*t;
 327
 328                 strcpy(temp,filename);
 329                 if ((t = strchr(temp,'.')) == NULL)
 330                         return 0;       //missing extension
 331                 // look if it's .mn2 or .msn
 332                 Mission_list[count].descent_version = (t[3] == '2') ? 2 : 1;
 333                 *t = 0;                 //kill extension
 334
 335                 strncpy( Mission_list[count].filename, temp, 9 );
 336                 Mission_list[count].anarchy_only_flag = 0;
 337                 Mission_list[count].location = location;
 338
 339                 p = get_parm_value("name",mfile);
 340
 341                 if (!p) {               //try enhanced mission
 342                         cfseek(mfile,0,SEEK_SET);
 343                         p = get_parm_value("xname",mfile);
 344                 }
 345
 346                 if (HoardEquipped())
 347                 {
 348                         if (!p) {               //try super-enhanced mission!
 349                                 cfseek(mfile,0,SEEK_SET);
 350                                 p = get_parm_value("zname",mfile);
 351                         }
 352                 }
 353
 354                 if (p) {
 355                         char *t;
 356                         if ((t=strchr(p,';'))!=NULL)
 357                                 *t=0;
 358                         t = p + strlen(p)-1;
 359                         while (isspace(*t)) t--;
 360                         strncpy(Mission_list[count].mission_name,p,MISSION_NAME_LEN);
 361                 }
 362                 else {
 363                         cfclose(mfile);
 364                         return 0;
 365                 }
 366
 367                 p = get_parm_value("type",mfile);
 368
 369                 //get mission type
 370                 if (p)
 371                         Mission_list[count].anarchy_only_flag = istok(p,"anarchy");
 372
 373                 cfclose(mfile);
 374
 375                 return 1;
 376         }
 377
 378         return 0;
 379 }
 380
 381 void add_builtin_mission_to_list(int *count)
 382 {
 383         Builtin_mission_hogsize = cfile_size("descent2.hog");
 384         if (Builtin_mission_hogsize == -1)
 385                 Builtin_mission_hogsize = cfile_size("d2demo.hog");
 386
 387         switch (Builtin_mission_hogsize) {
 388         case SHAREWARE_MISSION_HOGSIZE:
 389         case MAC_SHARE_MISSION_HOGSIZE:
 390                 strcpy(Mission_list[*count].filename,SHAREWARE_MISSION_FILENAME);
 391                 strcpy(Mission_list[*count].mission_name,SHAREWARE_MISSION_NAME);
 392                 Mission_list[*count].anarchy_only_flag = 0;
 393                 break;
 394         case OEM_MISSION_HOGSIZE:
 395                 strcpy(Mission_list[*count].filename,OEM_MISSION_FILENAME);
 396                 strcpy(Mission_list[*count].mission_name,OEM_MISSION_NAME);
 397                 Mission_list[*count].anarchy_only_flag = 0;
 398                 break;
 399         default:
 400                 Warning("Unknown hogsize %d, trying %s\n", Builtin_mission_hogsize, FULL_MISSION_FILENAME ".mn2");
 401                 Int3(); //fall through
 402         case FULL_MISSION_HOGSIZE:
 403                 if (!read_mission_file(FULL_MISSION_FILENAME ".mn2", 0, ML_CURDIR))
 404                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
 405         }
 406
 407         strcpy(Builtin_mission_filename, Mission_list[*count].filename);
 408         Mission_list[*count].descent_version = 2;
 409         Mission_list[*count].anarchy_only_flag = 0;
 410         ++(*count);
 411 }
 412
 413
 414 void add_missions_to_list(char *search_name, int *count, int anarchy_mode)
 415 {
 416         FILEFINDSTRUCT find;
 417         if( !FileFindFirst( search_name, &find ) ) {
 418                 do      {
 419                         if (read_mission_file( find.name, *count, ML_MISSIONDIR )) {
 420
 421                                 if (anarchy_mode || !Mission_list[*count].anarchy_only_flag)
 422                                         ++(*count);
 423                         }
 424
 425                 } while( !FileFindNext( &find ) && *count < MAX_MISSIONS);
 426                 FileFindClose();
 427                 if (*count >= MAX_MISSIONS)
 428                         mprintf((0, "Warning: more missions than d2x can handle\n"));
 429         }
 430 }
 431
 432 /* move <mission_name> to <place> on mission list, increment <place> */
 433 void promote (char * mission_name, int * top_place, int num_missions)
 434 {
 435         int i;
 436         char name[FILENAME_LEN], * t;
 437         strcpy(name, mission_name);
 438         if ((t = strchr(name,'.')) != NULL)
 439                 *t = 0; //kill extension
 440         //printf("promoting: %s\n", name);
 441         for (i = *top_place; i < num_missions; i++)
 442                 if (!stricmp(Mission_list[i].filename, name)) {
 443                         //swap mission positions
 444                         mle temp;
 445
 446                         temp = Mission_list[*top_place];
 447                         Mission_list[*top_place] = Mission_list[i];
 448                         Mission_list[i] = temp;
 449                         ++(*top_place);
 450                         break;
 451                 }
 452 }
 453
 454
 455
 456 //fills in the global list of missions.  Returns the number of missions
 457 //in the list.  If anarchy_mode set, don't include non-anarchy levels.
 458
 459 extern char CDROM_dir[];
 460 extern char AltHogDir[];
 461 extern char AltHogdir_initialized;
 462
 463 int build_mission_list(int anarchy_mode)
 464 {
 465         static int num_missions=-1;
 466         int count = 0;
 467         int top_place;
 468
 469         //now search for levels on disk
 470
 471 //@@Took out this code because after this routine was called once for
 472 //@@a list of single-player missions, a subsequent call for a list of
 473 //@@anarchy missions would not scan again, and thus would not find the
 474 //@@anarchy-only missions.  If we retain the minimum level of install,
 475 //@@we may want to put the code back in, having it always scan for all
 476 //@@missions, and have the code that uses it sort out the ones it wants.
 477 //@@    if (num_missions != -1) {
 478 //@@            if (Current_mission_num != 0)
 479 //@@                    load_mission(0);                                //set built-in mission as default
 480 //@@            return num_missions;
 481 //@@    }
 482
 483         add_builtin_mission_to_list(&count);  //read built-in first
 484         add_missions_to_list(MISSION_DIR "*.mn2", &count, anarchy_mode);
 485         add_missions_to_list(MISSION_DIR "*.msn", &count, anarchy_mode);
 486
 487         if (AltHogdir_initialized) {
 488                 char search_name[PATH_MAX + 5];
 489                 strcpy(search_name, AltHogDir);
 490                 strcat(search_name, "/" MISSION_DIR "*.mn2");
 491                 add_missions_to_list(search_name, &count, anarchy_mode);
 492                 strcpy(search_name, AltHogDir);
 493                 strcat(search_name, "/" MISSION_DIR "*.msn");
 494                 add_missions_to_list(search_name, &count, anarchy_mode);
 495         }
 496
 497         // move original missions (in story-chronological order)
 498         // to top of mission list
 499         top_place = 0;
 500         promote("descent", &top_place, count); // original descent 1 mission
 501         promote(Builtin_mission_filename, &top_place, count); // d2 or d2demo
 502         Builtin_mission_num = top_place - 1;
 503         promote("d2x", &top_place, count); // vertigo
 504
 505         if (count > top_place)
 506                 qsort(&Mission_list[top_place],
 507                       count - top_place,
 508                       sizeof(*Mission_list),
 509                                 (int (*)( const void *, const void * ))ml_sort_func);
 510
 511
 512         if (count > top_place)
 513                 qsort(&Mission_list[top_place],
 514                       count - top_place,
 515                       sizeof(*Mission_list),
 516                       (int (*)( const void *, const void * ))ml_sort_func);
 517
 518         //load_mission(0);   //set built-in mission as default
 519
 520         num_missions = count;
 521
 522         return count;
 523 }
 524
 525 void init_extra_robot_movie(char *filename);
 526
 527 //values for built-in mission
 528
 529 //loads the specfied mission from the mission list.
 530 //build_mission_list() must have been called.
 531 //Returns true if mission loaded ok, else false.
 532 int load_mission(int mission_num)
 533 {
 534         CFILE *mfile;
 535         char buf[80], *v;
 536         int found_hogfile;
 537         int enhanced_mission = 0;
 538
 539         if (mission_num == Builtin_mission_num) {
 540                 switch (Builtin_mission_hogsize) {
 541                 case SHAREWARE_MISSION_HOGSIZE:
 542                 case MAC_SHARE_MISSION_HOGSIZE:
 543                         return load_mission_shareware(mission_num);
 544                         break;
 545                 case OEM_MISSION_HOGSIZE:
 546                         return load_mission_oem(mission_num);
 547                         break;
 548                 case FULL_MISSION_HOGSIZE:
 549                 default:
 550                         // continue on...
 551                 }
 552         }
 553
 554         Current_mission_num = mission_num;
 555
 556         mprintf(( 0, "Loading mission %d\n", mission_num ));
 557
 558         //read mission from file
 559
 560         switch (Mission_list[mission_num].location) {
 561         case ML_MISSIONDIR:
 562                 strcpy(buf,MISSION_DIR);
 563                 break;
 564         case ML_CDROM:
 565                 strcpy(buf,CDROM_dir);
 566                 break;
 567         default:
 568                 Int3();                                                 //fall through
 569         case ML_CURDIR:
 570                 strcpy(buf,"");
 571                 break;
 572         }
 573         strcat(buf,Mission_list[mission_num].filename);
 574         if (Mission_list[mission_num].descent_version == 2)
 575                 strcat(buf,".mn2");
 576         else
 577                 strcat(buf,".msn");
 578
 579         mfile = cfopen(buf,"rb");
 580         if (mfile == NULL) {
 581                 Current_mission_num = -1;
 582                 return 0;               //error!
 583         }
 584
 585         //for non-builtin missions, load HOG
 586         if (strcmp(Mission_list[mission_num].filename, Builtin_mission_filename)) {
 587
 588                 strcpy(buf+strlen(buf)-4,".hog");               //change extension
 589
 590                 found_hogfile = cfile_use_alternate_hogfile(buf);
 591
 592                 #ifdef RELEASE                          //for release, require mission to be in hogfile
 593                 if (! found_hogfile) {
 594                         cfclose(mfile);
 595                         Current_mission_num = -1;
 596                         return 0;
 597                 }
 598                 #endif
 599
 600                 // for Descent 1 missions, load descent.hog
 601                 if (Mission_list[mission_num].descent_version == 1 && strcmp(buf, "descent.hog"))
 602                         if (!cfile_use_descent1_hogfile("descent.hog"))
 603                                 Warning("descent.hog not available, this mission may be missing some files required for briefings\n");
 604         }
 605
 606         //init vars
 607         Last_level = 0;
 608         Last_secret_level = 0;
 609         Briefing_text_filename[0] = 0;
 610         Ending_text_filename[0] = 0;
 611
 612         while (mfgets(buf,80,mfile)) {
 613
 614                 if (istok(buf,"name"))
 615                         continue;                                               //already have name, go to next line
 616                 if (istok(buf,"xname")) {
 617                         enhanced_mission = 1;
 618                         continue;                                               //already have name, go to next line
 619                 }
 620                 if (istok(buf,"zname")) {
 621                         enhanced_mission = 2;
 622                         continue;                                               //already have name, go to next line
 623                 }
 624                 else if (istok(buf,"type"))
 625                         continue;                                               //already have name, go to next line
 626                 else if (istok(buf,"hog")) {
 627                         char    *bufp = buf;
 628
 629                         while (*(bufp++) != '=')
 630                                 ;
 631
 632                         if (*bufp == ' ')
 633                                 while (*(++bufp) == ' ')
 634                                         ;
 635
 636                         cfile_use_alternate_hogfile(bufp);
 637                         mprintf((0, "Hog file override = [%s]\n", bufp));
 638                 }
 639                 else if (istok(buf,"briefing")) {
 640                         if ((v = get_value(buf)) != NULL) {
 641                                 add_term(v);
 642                                 if (strlen(v) < 13)
 643                                         strcpy(Briefing_text_filename,v);
 644                         }
 645                 }
 646                 else if (istok(buf,"ending")) {
 647                         if ((v = get_value(buf)) != NULL) {
 648                                 add_term(v);
 649                                 if (strlen(v) < 13)
 650                                         strcpy(Ending_text_filename,v);
 651                         }
 652                 }
 653                 else if (istok(buf,"num_levels")) {
 654
 655                         if ((v=get_value(buf))!=NULL) {
 656                                 int n_levels,i;
 657
 658                                 n_levels = atoi(v);
 659
 660                                 for (i=0;i<n_levels && mfgets(buf,80,mfile);i++) {
 661
 662                                         add_term(buf);
 663                                         if (strlen(buf) <= 12) {
 664                                                 strcpy(Level_names[i],buf);
 665                                                 Last_level++;
 666                                         }
 667                                         else
 668                                                 break;
 669                                 }
 670
 671                         }
 672                 }
 673                 else if (istok(buf,"num_secrets")) {
 674                         if ((v=get_value(buf))!=NULL) {
 675                                 int i;
 676
 677                                 N_secret_levels = atoi(v);
 678
 679                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 680
 681                                 for (i=0;i<N_secret_levels && mfgets(buf,80,mfile);i++) {
 682                                         char *t;
 683
 684
 685                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 686                                         else
 687                                                 break;
 688
 689                                         add_term(buf);
 690                                         if (strlen(buf) <= 12) {
 691                                                 strcpy(Secret_level_names[i],buf);
 692                                                 Secret_level_table[i] = atoi(t);
 693                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 694                                                         break;
 695                                                 Last_secret_level--;
 696                                         }
 697                                         else
 698                                                 break;
 699                                 }
 700
 701                         }
 702                 }
 703
 704         }
 705
 706         cfclose(mfile);
 707
 708         if (Last_level <= 0) {
 709                 Current_mission_num = -1;               //no valid mission loaded
 710                 return 0;
 711         }
 712
 713         Current_mission_filename = Mission_list[Current_mission_num].filename;
 714         Current_mission_longname = Mission_list[Current_mission_num].mission_name;
 715
 716         if (enhanced_mission) {
 717                 char t[50];
 718                 extern void bm_read_extra_robots();
 719                 sprintf(t,"%s.ham",Current_mission_filename);
 720                 bm_read_extra_robots(t,enhanced_mission);
 721                 strncpy(t,Current_mission_filename,6);
 722                 strcat(t,"-l.mvl");
 723                 init_extra_robot_movie(t);
 724         }
 725
 726         return 1;
 727 }
 728
 729 //loads the named mission if exists.
 730 //Returns true if mission loaded ok, else false.
 731 int load_mission_by_name(char *mission_name)
 732 {
 733         int n,i;
 734
 735         n = build_mission_list(1);
 736
 737         for (i=0;i<n;i++)
 738                 if (!stricmp(mission_name,Mission_list[i].filename))
 739                         return load_mission(i);
 740
 741         return 0;               //couldn't find mission
 742 }