main/mission.c

   1 /* $Id: mission.c,v 1.36 2004-12-04 04:03:10 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  */
  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 "config.h"
  43 #include "newmenu.h"
  44 #include "text.h"
  45 #include "u_mem.h"
  46 #include "ignorecase.h"
  47
  48 //values for d1 built-in mission
  49 #define BIM_LAST_LEVEL          27
  50 #define BIM_LAST_SECRET_LEVEL   -3
  51 #define BIM_BRIEFING_FILE       "briefing.tex"
  52 #define BIM_ENDING_FILE         "endreg.tex"
  53
  54 //mission list entry
  55 typedef struct mle {
  56     char    mission_name[MISSION_NAME_LEN+1];
  57     char    filename[9];                // filename without extension
  58     ubyte   descent_version;            // descent 1 or descent 2?
  59     bool        anarchy_only_flag;          // if true, mission is anarchy only
  60     int         builtin_hogsize;        // This is used to determine the version. Only for the built in mission.
  61     ubyte   location;                   // see defines below
  62 } mle;
  63
  64 //values that describe where a mission is located
  65 #define ML_CURDIR       0
  66 #define ML_MISSIONDIR   1
  67 #define ML_CDROM        2
  68
  69 int num_missions = -1;
  70
  71 Mission *Current_mission = NULL; // currently loaded mission
  72
  73 //
  74 //  Special versions of mission routines for d1 builtins
  75 //
  76
  77 int load_mission_d1(void)
  78 {
  79         int i;
  80
  81         switch (cfile_size("descent.hog")) {
  82         case D1_SHAREWARE_MISSION_HOGSIZE:
  83         case D1_SHAREWARE_10_MISSION_HOGSIZE:
  84                 N_secret_levels = 0;
  85
  86                 Last_level = 7;
  87                 Last_secret_level = 0;
  88
  89                 //build level names
  90                 for (i=0;i<Last_level;i++)
  91                         sprintf(Level_names[i], "level%02d.sdl", i+1);
  92
  93                 break;
  94         case D1_MAC_SHARE_MISSION_HOGSIZE:
  95                 N_secret_levels = 0;
  96
  97                 Last_level = 3;
  98                 Last_secret_level = 0;
  99
 100                 //build level names
 101                 for (i=0;i<Last_level;i++)
 102                         sprintf(Level_names[i], "level%02d.sdl", i+1);
 103
 104                 break;
 105         case D1_OEM_MISSION_HOGSIZE:
 106         case D1_OEM_10_MISSION_HOGSIZE:
 107                 N_secret_levels = 1;
 108
 109                 Last_level = 15;
 110                 Last_secret_level = -1;
 111
 112                 //build level names
 113                 for (i=0; i < Last_level - 1; i++)
 114                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 115                 sprintf(Level_names[i], "saturn%02d.rdl", i+1);
 116                 for (i=0; i < -Last_secret_level; i++)
 117                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 118
 119                 Secret_level_table[0] = 10;
 120
 121                 break;
 122         default:
 123                 Int3(); // fall through
 124         case D1_MISSION_HOGSIZE:
 125         case D1_10_MISSION_HOGSIZE:
 126         case D1_MAC_MISSION_HOGSIZE:
 127                 N_secret_levels = 3;
 128
 129                 Last_level = BIM_LAST_LEVEL;
 130                 Last_secret_level = BIM_LAST_SECRET_LEVEL;
 131
 132                 //build level names
 133                 for (i=0;i<Last_level;i++)
 134                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 135                 for (i=0;i<-Last_secret_level;i++)
 136                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 137
 138                 Secret_level_table[0] = 10;
 139                 Secret_level_table[1] = 21;
 140                 Secret_level_table[2] = 24;
 141
 142                 break;
 143         }
 144         strcpy(Briefing_text_filename,BIM_BRIEFING_FILE);
 145         strcpy(Ending_text_filename,BIM_ENDING_FILE);
 146
 147         return 1;
 148 }
 149
 150
 151 //
 152 //  Special versions of mission routines for shareware
 153 //
 154
 155 int load_mission_shareware(void)
 156 {
 157     strcpy(Current_mission->mission_name, SHAREWARE_MISSION_NAME);
 158     Current_mission->descent_version = 2;
 159     Current_mission->anarchy_only_flag = 0;
 160
 161     switch (Current_mission->builtin_hogsize) {
 162         case MAC_SHARE_MISSION_HOGSIZE:
 163                 N_secret_levels = 1;
 164
 165                 Last_level = 4;
 166                 Last_secret_level = -1;
 167
 168                 // mac demo is using the regular hog and rl2 files
 169                 strcpy(Level_names[0],"d2leva-1.rl2");
 170                 strcpy(Level_names[1],"d2leva-2.rl2");
 171                 strcpy(Level_names[2],"d2leva-3.rl2");
 172                 strcpy(Level_names[3],"d2leva-4.rl2");
 173                 strcpy(Secret_level_names[0],"d2leva-s.rl2");
 174                 break;
 175         default:
 176                 Int3(); // fall through
 177         case SHAREWARE_MISSION_HOGSIZE:
 178                 N_secret_levels = 0;
 179
 180                 Last_level = 3;
 181                 Last_secret_level = 0;
 182
 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(void)
 197 {
 198     strcpy(Current_mission->mission_name, OEM_MISSION_NAME);
 199     Current_mission->descent_version = 2;
 200     Current_mission->anarchy_only_flag = 0;
 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 //compare a string for a token. returns true if match
 229 int istok(char *buf,char *tok)
 230 {
 231         return strnicmp(buf,tok,strlen(tok)) == 0;
 232
 233 }
 234
 235 //adds a terminating 0 after a string at the first white space
 236 void add_term(char *s)
 237 {
 238         while (*s && !isspace(*s)) s++;
 239
 240         *s = 0;         //terminate!
 241 }
 242
 243 //returns ptr to string after '=' & white space, or NULL if no '='
 244 //adds 0 after parm at first white space
 245 char *get_value(char *buf)
 246 {
 247         char *t;
 248
 249         t = strchr(buf,'=')+1;
 250
 251         if (t) {
 252                 while (*t && isspace(*t)) t++;
 253
 254                 if (*t)
 255                         return t;
 256         }
 257
 258         return NULL;            //error!
 259 }
 260
 261 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 262 char *get_parm_value(char *parm,CFILE *f)
 263 {
 264         static char buf[80];
 265
 266         if (!cfgets(buf,80,f))
 267                 return NULL;
 268
 269         if (istok(buf,parm))
 270                 return get_value(buf);
 271         else
 272                 return NULL;
 273 }
 274
 275 int ml_sort_func(mle *e0,mle *e1)
 276 {
 277         return stricmp(e0->mission_name,e1->mission_name);
 278
 279 }
 280
 281 extern char CDROM_dir[];
 282
 283 //returns 1 if file read ok, else 0
 284 int read_mission_file(mle *mission, char *filename, int location)
 285 {
 286         char filename2[100];
 287         CFILE *mfile;
 288
 289         //printf("reading: %s\n", filename);
 290
 291         switch (location) {
 292                 case ML_MISSIONDIR:
 293                         strcpy(filename2,MISSION_DIR);
 294                         break;
 295
 296                 case ML_CDROM:
 297                         songs_stop_redbook();           //so we can read from the CD
 298                         strcpy(filename2,CDROM_dir);
 299                         break;
 300
 301                 default:
 302                         Int3();         //fall through
 303
 304                 case ML_CURDIR:
 305                         strcpy(filename2,"");
 306                         break;
 307         }
 308         strcat(filename2,filename);
 309
 310         mfile = cfopen(filename2,"rb");
 311
 312         if (mfile) {
 313                 char *p;
 314                 char temp[FILENAME_LEN],*t;
 315
 316                 strcpy(temp,filename);
 317                 if ((t = strchr(temp,'.')) == NULL)
 318                         return 0;       //missing extension
 319                 // look if it's .mn2 or .msn
 320                 mission->descent_version = (t[3] == '2') ? 2 : 1;
 321                 *t = 0;                 //kill extension
 322
 323                 strncpy( mission->filename, temp, 9 );
 324                 mission->anarchy_only_flag = 0;
 325                 mission->location = location;
 326
 327                 p = get_parm_value("name",mfile);
 328
 329                 if (!p) {               //try enhanced mission
 330                         cfseek(mfile,0,SEEK_SET);
 331                         p = get_parm_value("xname",mfile);
 332                 }
 333
 334                 if (!p) {       //try super-enhanced mission!
 335                         cfseek(mfile,0,SEEK_SET);
 336                         p = get_parm_value("zname",mfile);
 337                 }
 338
 339                 if (p) {
 340                         char *t;
 341                         if ((t=strchr(p,';'))!=NULL)
 342                                 *t=0;
 343                         t = p + strlen(p)-1;
 344                         while (isspace(*t)) t--;
 345                         strncpy(mission->mission_name,p,MISSION_NAME_LEN);
 346                 }
 347                 else {
 348                         cfclose(mfile);
 349                         return 0;
 350                 }
 351
 352                 p = get_parm_value("type",mfile);
 353
 354                 //get mission type
 355                 if (p)
 356                         mission->anarchy_only_flag = istok(p,"anarchy");
 357
 358                 cfclose(mfile);
 359
 360                 return 1;
 361         }
 362
 363         return 0;
 364 }
 365
 366 void add_d1_builtin_mission_to_list(mle *mission)
 367 {
 368     int size;
 369
 370         if (!cfexist("descent.hog"))
 371                 return;
 372
 373         size = cfile_size("descent.hog");
 374
 375         switch (size) {
 376         case D1_SHAREWARE_MISSION_HOGSIZE:
 377         case D1_SHAREWARE_10_MISSION_HOGSIZE:
 378         case D1_MAC_SHARE_MISSION_HOGSIZE:
 379                 strcpy(mission->filename, D1_MISSION_FILENAME);
 380                 strcpy(mission->mission_name, D1_SHAREWARE_MISSION_NAME);
 381                 mission->anarchy_only_flag = 0;
 382                 break;
 383         case D1_OEM_MISSION_HOGSIZE:
 384         case D1_OEM_10_MISSION_HOGSIZE:
 385                 strcpy(mission->filename, D1_MISSION_FILENAME);
 386                 strcpy(mission->mission_name, D1_OEM_MISSION_NAME);
 387                 mission->anarchy_only_flag = 0;
 388                 break;
 389         default:
 390                 Warning("Unknown D1 hogsize %d\n", size);
 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->filename, D1_MISSION_FILENAME);
 397                 strcpy(mission->mission_name, D1_MISSION_NAME);
 398                 mission->anarchy_only_flag = 0;
 399                 break;
 400         }
 401
 402         mission->descent_version = 1;
 403         mission->anarchy_only_flag = 0;
 404         mission->builtin_hogsize = 0;
 405         num_missions++;
 406 }
 407
 408
 409 void add_builtin_mission_to_list(mle *mission, char *name)
 410 {
 411     int size = cfile_size("descent2.hog");
 412
 413         if (size == -1)
 414                 size = cfile_size("d2demo.hog");
 415
 416         switch (size) {
 417         case SHAREWARE_MISSION_HOGSIZE:
 418         case MAC_SHARE_MISSION_HOGSIZE:
 419                 strcpy(mission->filename,SHAREWARE_MISSION_FILENAME);
 420                 strcpy(mission->mission_name,SHAREWARE_MISSION_NAME);
 421                 mission->anarchy_only_flag = 0;
 422                 break;
 423         case OEM_MISSION_HOGSIZE:
 424                 strcpy(mission->filename,OEM_MISSION_FILENAME);
 425                 strcpy(mission->mission_name,OEM_MISSION_NAME);
 426                 mission->anarchy_only_flag = 0;
 427                 break;
 428         default:
 429                 Warning("Unknown hogsize %d, trying %s\n", size, FULL_MISSION_FILENAME ".mn2");
 430                 Int3(); //fall through
 431         case FULL_MISSION_HOGSIZE:
 432         case FULL_10_MISSION_HOGSIZE:
 433         case MAC_FULL_MISSION_HOGSIZE:
 434                 if (!read_mission_file(mission, FULL_MISSION_FILENAME ".mn2", ML_CURDIR))
 435                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
 436         }
 437
 438         strcpy(name, mission->filename);
 439     mission->builtin_hogsize = size;
 440         mission->descent_version = 2;
 441         mission->anarchy_only_flag = 0;
 442         num_missions++;
 443 }
 444
 445
 446 void add_missions_to_list(mle *mission, int anarchy_mode)
 447 {
 448         char **find, **i, *ext;
 449
 450         find = PHYSFS_enumerateFiles(MISSION_DIR);
 451
 452         for (i = find; *i != NULL; i++)
 453         {
 454                 ext = strrchr(*i, '.');
 455                 if (ext && (!strnicmp(ext, ".msn", 4) || !strnicmp(ext, ".mn2", 4)))
 456                         if (read_mission_file(mission, *i, ML_MISSIONDIR))
 457                                 if (anarchy_mode || !mission->anarchy_only_flag) {
 458                                         mission++;
 459                                         num_missions++;
 460                                         mission->builtin_hogsize = 0;
 461                                 }
 462                 if (num_missions >= MAX_MISSIONS)
 463                 {
 464                         mprintf((0, "Warning: more missions than d2x can handle\n"));
 465                         break;
 466                 }
 467         }
 468
 469         PHYSFS_freeList(find);
 470 }
 471
 472 /* move <mission_name> to <place> on mission list, increment <place> */
 473 void promote (mle *mission_list, char * mission_name, int * top_place)
 474 {
 475         int i;
 476         char name[FILENAME_LEN], * t;
 477         strcpy(name, mission_name);
 478         if ((t = strchr(name,'.')) != NULL)
 479                 *t = 0; //kill extension
 480         //printf("promoting: %s\n", name);
 481         for (i = *top_place; i < num_missions; i++)
 482                 if (!stricmp(mission_list[i].filename, name)) {
 483                         //swap mission positions
 484                         mle temp;
 485
 486                         temp = mission_list[*top_place];
 487                         mission_list[*top_place] = mission_list[i];
 488                         mission_list[i] = temp;
 489                         ++(*top_place);
 490                         break;
 491                 }
 492 }
 493
 494 void free_mission(void)
 495 {
 496     // May become more complex with the editor
 497     if (Current_mission) {
 498         d_free(Current_mission);
 499     }
 500 }
 501
 502
 503
 504 //fills in the global list of missions.  Returns the number of missions
 505 //in the list.  If anarchy_mode is set, then also add anarchy-only missions.
 506
 507 extern char CDROM_dir[];
 508 #if 0
 509 extern char AltHogDir[];
 510 extern char AltHogdir_initialized;
 511 #endif
 512
 513 mle *build_mission_list(int anarchy_mode)
 514 {
 515         mle *mission_list;
 516         int top_place;
 517     char        builtin_mission_filename[FILENAME_LEN];
 518
 519         //now search for levels on disk
 520
 521 //@@Took out this code because after this routine was called once for
 522 //@@a list of single-player missions, a subsequent call for a list of
 523 //@@anarchy missions would not scan again, and thus would not find the
 524 //@@anarchy-only missions.  If we retain the minimum level of install,
 525 //@@we may want to put the code back in, having it always scan for all
 526 //@@missions, and have the code that uses it sort out the ones it wants.
 527 //@@    if (num_missions != -1) {
 528 //@@            if (Current_mission_num != 0)
 529 //@@                    load_mission(0);                                //set built-in mission as default
 530 //@@            return num_missions;
 531 //@@    }
 532
 533         MALLOC(mission_list, mle, MAX_MISSIONS);
 534         num_missions = 0;
 535
 536         add_builtin_mission_to_list(mission_list + num_missions, builtin_mission_filename);  //read built-in first
 537         add_d1_builtin_mission_to_list(mission_list + num_missions);
 538         add_missions_to_list(mission_list + num_missions, anarchy_mode);
 539
 540         // move original missions (in story-chronological order)
 541         // to top of mission list
 542         top_place = 0;
 543         promote(mission_list, "descent", &top_place); // original descent 1 mission
 544         promote(mission_list, builtin_mission_filename, &top_place); // d2 or d2demo
 545         promote(mission_list, "d2x", &top_place); // vertigo
 546
 547         if (num_missions > top_place)
 548                 qsort(&mission_list[top_place],
 549                       num_missions - top_place,
 550                       sizeof(*mission_list),
 551                                 (int (*)( const void *, const void * ))ml_sort_func);
 552
 553
 554         if (num_missions > top_place)
 555                 qsort(&mission_list[top_place],
 556                       num_missions - top_place,
 557                       sizeof(*mission_list),
 558                       (int (*)( const void *, const void * ))ml_sort_func);
 559
 560         //load_mission(0);   //set built-in mission as default
 561
 562     atexit(free_mission);
 563
 564         return mission_list;
 565 }
 566
 567 void free_mission_list(mle *mission_list)
 568 {
 569         d_free(mission_list);
 570         num_missions = 0;
 571 }
 572
 573 void init_extra_robot_movie(char *filename);
 574
 575 //values for built-in mission
 576
 577 //loads the specfied mission from the mission list.
 578 //build_mission_list() must have been called.
 579 //Returns true if mission loaded ok, else false.
 580 int load_mission(mle *mission)
 581 {
 582         CFILE *mfile;
 583         char buf[80], *v;
 584     int found_hogfile;
 585
 586     if (Current_mission)
 587         free_mission();
 588     Current_mission = d_malloc(sizeof(Mission));
 589     if (!Current_mission) return 0;
 590     *(mle *) Current_mission = *mission;
 591
 592     // for Descent 1 missions, load descent.hog
 593     if (EMULATING_D1) {
 594         if (!cfile_init("descent.hog"))
 595             Warning("descent.hog not available, this mission may be missing some files required for briefings and exit sequence\n");
 596         if (!stricmp(Current_mission_filename, D1_MISSION_FILENAME))
 597             return load_mission_d1();
 598     }
 599
 600     if (PLAYING_BUILTIN_MISSION) {
 601                 switch (Current_mission->builtin_hogsize) {
 602                 case SHAREWARE_MISSION_HOGSIZE:
 603                 case MAC_SHARE_MISSION_HOGSIZE:
 604                         return load_mission_shareware();
 605                         break;
 606                 case OEM_MISSION_HOGSIZE:
 607                         return load_mission_oem();
 608                         break;
 609                 default:
 610                         Int3(); // fall through
 611                 case FULL_MISSION_HOGSIZE:
 612                 case FULL_10_MISSION_HOGSIZE:
 613                 case MAC_FULL_MISSION_HOGSIZE:
 614                         // continue on... (use d2.mn2 from hogfile)
 615                         break;
 616                 }
 617     }
 618
 619         mprintf(( 0, "Loading mission %s\n", Current_mission_filename ));
 620
 621         //read mission from file
 622
 623         switch (mission->location) {
 624         case ML_MISSIONDIR:
 625                 strcpy(buf,MISSION_DIR);
 626                 break;
 627         case ML_CDROM:
 628                 strcpy(buf,CDROM_dir);
 629                 break;
 630         default:
 631                 Int3();                                                 //fall through
 632         case ML_CURDIR:
 633                 strcpy(buf,"");
 634                 break;
 635         }
 636         strcat(buf, mission->filename);
 637         if (mission->descent_version == 2)
 638                 strcat(buf,".mn2");
 639         else
 640                 strcat(buf,".msn");
 641
 642         PHYSFSEXT_locateCorrectCase(buf);
 643
 644         mfile = cfopen(buf,"rb");
 645         if (mfile == NULL) {
 646         free_mission();
 647                 return 0;               //error!
 648         }
 649
 650     //for non-builtin missions, load HOG
 651     if (!PLAYING_BUILTIN_MISSION) {
 652
 653         strcpy(buf+strlen(buf)-4,".hog");               //change extension
 654
 655                 PHYSFSEXT_locateCorrectCase(buf);
 656
 657                 found_hogfile = cfile_init(buf);
 658
 659 #ifdef RELEASE                          //for release, require mission to be in hogfile
 660         if (! found_hogfile) {
 661             cfclose(mfile);
 662             free_mission();
 663             return 0;
 664         }
 665 #endif
 666     }
 667
 668     //init vars
 669         Last_level = 0;
 670         Last_secret_level = 0;
 671         Briefing_text_filename[0] = 0;
 672         Ending_text_filename[0] = 0;
 673
 674         while (cfgets(buf,80,mfile)) {
 675
 676                 if (istok(buf,"name")) {
 677                         Current_mission->enhanced = 0;
 678                         continue;                                               //already have name, go to next line
 679                 }
 680                 if (istok(buf,"xname")) {
 681                         Current_mission->enhanced = 1;
 682                         continue;                                               //already have name, go to next line
 683                 }
 684                 if (istok(buf,"zname")) {
 685                         Current_mission->enhanced = 2;
 686                         continue;                                               //already have name, go to next line
 687                 }
 688                 else if (istok(buf,"type"))
 689                         continue;                                               //already have name, go to next line
 690                 else if (istok(buf,"hog")) {
 691                         char    *bufp = buf;
 692
 693                         while (*(bufp++) != '=')
 694                                 ;
 695
 696                         if (*bufp == ' ')
 697                                 while (*(++bufp) == ' ')
 698                                         ;
 699
 700                         cfile_init(bufp);
 701                         mprintf((0, "Hog file override = [%s]\n", bufp));
 702                 }
 703                 else if (istok(buf,"briefing")) {
 704                         if ((v = get_value(buf)) != NULL) {
 705                                 add_term(v);
 706                                 if (strlen(v) < 13)
 707                                         strcpy(Briefing_text_filename,v);
 708                         }
 709                 }
 710                 else if (istok(buf,"ending")) {
 711                         if ((v = get_value(buf)) != NULL) {
 712                                 add_term(v);
 713                                 if (strlen(v) < 13)
 714                                         strcpy(Ending_text_filename,v);
 715                         }
 716                 }
 717                 else if (istok(buf,"num_levels")) {
 718
 719                         if ((v=get_value(buf))!=NULL) {
 720                                 int n_levels,i;
 721
 722                                 n_levels = atoi(v);
 723
 724                                 for (i=0;i<n_levels && cfgets(buf,80,mfile);i++) {
 725
 726                                         add_term(buf);
 727                                         if (strlen(buf) <= 12) {
 728                                                 strcpy(Level_names[i],buf);
 729                                                 Last_level++;
 730                                         }
 731                                         else
 732                                                 break;
 733                                 }
 734
 735                         }
 736                 }
 737                 else if (istok(buf,"num_secrets")) {
 738                         if ((v=get_value(buf))!=NULL) {
 739                                 int i;
 740
 741                                 N_secret_levels = atoi(v);
 742
 743                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 744
 745                                 for (i=0;i<N_secret_levels && cfgets(buf,80,mfile);i++) {
 746                                         char *t;
 747
 748
 749                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 750                                         else
 751                                                 break;
 752
 753                                         add_term(buf);
 754                                         if (strlen(buf) <= 12) {
 755                                                 strcpy(Secret_level_names[i],buf);
 756                                                 Secret_level_table[i] = atoi(t);
 757                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 758                                                         break;
 759                                                 Last_secret_level--;
 760                                         }
 761                                         else
 762                                                 break;
 763                                 }
 764
 765                         }
 766                 }
 767
 768         }
 769
 770         cfclose(mfile);
 771
 772         if (Last_level <= 0) {
 773                 free_mission();         //no valid mission loaded
 774                 return 0;
 775         }
 776
 777         if (Current_mission->enhanced) {
 778                 char t[50];
 779                 extern void bm_read_extra_robots();
 780                 sprintf(t,"%s.ham",Current_mission_filename);
 781                 bm_read_extra_robots(t, Current_mission->enhanced);
 782                 strncpy(t,Current_mission_filename,6);
 783                 init_extra_robot_movie(t);
 784         }
 785
 786         return 1;
 787 }
 788
 789 //loads the named mission if exists.
 790 //Returns true if mission loaded ok, else false.
 791 int load_mission_by_name(char *mission_name)
 792 {
 793         int i;
 794         mle *mission_list = build_mission_list(1);
 795         bool found = 0;
 796
 797         for (i = 0; i < num_missions; i++)
 798                 if (!stricmp(mission_name, mission_list[i].filename))
 799                         found = load_mission(mission_list + i);
 800
 801         free_mission_list(mission_list);
 802         return found;
 803 }
 804
 805 int select_mission(int anarchy_mode, char *message)
 806 {
 807     mle *mission_list = build_mission_list(anarchy_mode);
 808         int new_mission_num;
 809
 810     if (num_missions <= 1) {
 811         new_mission_num = load_mission(mission_list) ? 0 : -1;
 812     } else {
 813         int i, default_mission;
 814         char * m[MAX_MISSIONS];
 815
 816         default_mission = 0;
 817         for (i = 0; i < num_missions; i++) {
 818             m[i] = mission_list[i].mission_name;
 819             if ( !stricmp( m[i], config_last_mission ) )
 820                 default_mission = i;
 821         }
 822
 823         new_mission_num = newmenu_listbox1( message, num_missions, m, 1, default_mission, NULL );
 824
 825         if (new_mission_num >= 0) {
 826                         // Chose a mission
 827                         strcpy(config_last_mission, m[new_mission_num]  );
 828
 829                         if (!load_mission(mission_list + new_mission_num)) {
 830                                 nm_messagebox( NULL, 1, TXT_OK, TXT_MISSION_ERROR);
 831                                 new_mission_num = -1;
 832                         }
 833                 }
 834     }
 835
 836         free_mission_list(mission_list);
 837     return (new_mission_num >= 0);
 838 }