main/mission.c

   1 /* $Id: mission.c,v 1.39 2005-01-26 03:53:43 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    *filename;          // filename without extension
  57         int     builtin_hogsize;    // if it's the built-in mission, used for determining the version
  58         char    mission_name[MISSION_NAME_LEN+1];
  59         ubyte   descent_version;    // descent 1 or descent 2?
  60         ubyte   anarchy_only_flag;  // if true, mission is anarchy only
  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                 mission->filename = d_strdup(temp);
 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))
 345                                 *t-- = 0; // remove trailing whitespace
 346                         if (strlen(p) > MISSION_NAME_LEN)
 347                                 p[MISSION_NAME_LEN] = 0;
 348                         strncpy(mission->mission_name, p, MISSION_NAME_LEN + 1);
 349                 }
 350                 else {
 351                         cfclose(mfile);
 352                         d_free(mission->filename);
 353                         return 0;
 354                 }
 355
 356                 p = get_parm_value("type",mfile);
 357
 358                 //get mission type
 359                 if (p)
 360                         mission->anarchy_only_flag = istok(p,"anarchy");
 361
 362                 cfclose(mfile);
 363
 364                 return 1;
 365         }
 366
 367         return 0;
 368 }
 369
 370 void add_d1_builtin_mission_to_list(mle *mission)
 371 {
 372     int size;
 373
 374         if (!cfexist("descent.hog"))
 375                 return;
 376
 377         size = cfile_size("descent.hog");
 378
 379         switch (size) {
 380         case D1_SHAREWARE_MISSION_HOGSIZE:
 381         case D1_SHAREWARE_10_MISSION_HOGSIZE:
 382         case D1_MAC_SHARE_MISSION_HOGSIZE:
 383                 mission->filename = d_strdup(D1_MISSION_FILENAME);
 384                 strcpy(mission->mission_name, D1_SHAREWARE_MISSION_NAME);
 385                 mission->anarchy_only_flag = 0;
 386                 break;
 387         case D1_OEM_MISSION_HOGSIZE:
 388         case D1_OEM_10_MISSION_HOGSIZE:
 389                 mission->filename = d_strdup(D1_MISSION_FILENAME);
 390                 strcpy(mission->mission_name, D1_OEM_MISSION_NAME);
 391                 mission->anarchy_only_flag = 0;
 392                 break;
 393         default:
 394                 Warning("Unknown D1 hogsize %d\n", size);
 395                 Int3();
 396                 // fall through
 397         case D1_MISSION_HOGSIZE:
 398         case D1_10_MISSION_HOGSIZE:
 399         case D1_MAC_MISSION_HOGSIZE:
 400                 mission->filename = d_strdup(D1_MISSION_FILENAME);
 401                 strcpy(mission->mission_name, D1_MISSION_NAME);
 402                 mission->anarchy_only_flag = 0;
 403                 break;
 404         }
 405
 406         mission->descent_version = 1;
 407         mission->anarchy_only_flag = 0;
 408         mission->builtin_hogsize = 0;
 409         num_missions++;
 410 }
 411
 412
 413 void add_builtin_mission_to_list(mle *mission, char *name)
 414 {
 415     int size = cfile_size("descent2.hog");
 416
 417         if (size == -1)
 418                 size = cfile_size("d2demo.hog");
 419
 420         switch (size) {
 421         case SHAREWARE_MISSION_HOGSIZE:
 422         case MAC_SHARE_MISSION_HOGSIZE:
 423                 mission->filename = d_strdup(SHAREWARE_MISSION_FILENAME);
 424                 strcpy(mission->mission_name,SHAREWARE_MISSION_NAME);
 425                 mission->anarchy_only_flag = 0;
 426                 break;
 427         case OEM_MISSION_HOGSIZE:
 428                 mission->filename = d_strdup(OEM_MISSION_FILENAME);
 429                 strcpy(mission->mission_name,OEM_MISSION_NAME);
 430                 mission->anarchy_only_flag = 0;
 431                 break;
 432         default:
 433                 Warning("Unknown hogsize %d, trying %s\n", size, FULL_MISSION_FILENAME ".mn2");
 434                 Int3(); //fall through
 435         case FULL_MISSION_HOGSIZE:
 436         case FULL_10_MISSION_HOGSIZE:
 437         case MAC_FULL_MISSION_HOGSIZE:
 438                 if (!read_mission_file(mission, FULL_MISSION_FILENAME ".mn2", ML_CURDIR))
 439                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
 440         }
 441
 442         strcpy(name, mission->filename);
 443     mission->builtin_hogsize = size;
 444         mission->descent_version = 2;
 445         mission->anarchy_only_flag = 0;
 446         num_missions++;
 447 }
 448
 449
 450 void add_missions_to_list(mle *mission, int anarchy_mode)
 451 {
 452         char **find, **i, *ext;
 453
 454         find = PHYSFS_enumerateFiles(MISSION_DIR);
 455
 456         for (i = find; *i != NULL; i++)
 457         {
 458                 ext = strrchr(*i, '.');
 459                 if (ext && (!strnicmp(ext, ".msn", 4) || !strnicmp(ext, ".mn2", 4)))
 460                         if (read_mission_file(mission, *i, ML_MISSIONDIR))
 461                         {
 462                                 if (anarchy_mode || !mission->anarchy_only_flag) {
 463                                         mission++;
 464                                         num_missions++;
 465                                         mission->builtin_hogsize = 0;
 466                                 }
 467                                 else
 468                                         d_free(mission->filename);
 469                         }
 470                 if (num_missions >= MAX_MISSIONS)
 471                 {
 472                         mprintf((0, "Warning: more missions than d2x can handle\n"));
 473                         break;
 474                 }
 475         }
 476
 477         PHYSFS_freeList(find);
 478 }
 479
 480 /* move <mission_name> to <place> on mission list, increment <place> */
 481 void promote (mle *mission_list, char * mission_name, int * top_place)
 482 {
 483         int i;
 484         char name[FILENAME_LEN], * t;
 485         strcpy(name, mission_name);
 486         if ((t = strchr(name,'.')) != NULL)
 487                 *t = 0; //kill extension
 488         //printf("promoting: %s\n", name);
 489         for (i = *top_place; i < num_missions; i++)
 490                 if (!stricmp(mission_list[i].filename, name)) {
 491                         //swap mission positions
 492                         mle temp;
 493
 494                         temp = mission_list[*top_place];
 495                         mission_list[*top_place] = mission_list[i];
 496                         mission_list[i] = temp;
 497                         ++(*top_place);
 498                         break;
 499                 }
 500 }
 501
 502 void free_mission(void)
 503 {
 504     // May become more complex with the editor
 505     if (Current_mission) {
 506                 d_free(Current_mission->filename);
 507         d_free(Current_mission);
 508     }
 509 }
 510
 511
 512
 513 //fills in the global list of missions.  Returns the number of missions
 514 //in the list.  If anarchy_mode is set, then also add anarchy-only missions.
 515
 516 extern char CDROM_dir[];
 517 #if 0
 518 extern char AltHogDir[];
 519 extern char AltHogdir_initialized;
 520 #endif
 521
 522 mle *build_mission_list(int anarchy_mode)
 523 {
 524         mle *mission_list;
 525         int top_place;
 526     char        builtin_mission_filename[FILENAME_LEN];
 527
 528         //now search for levels on disk
 529
 530 //@@Took out this code because after this routine was called once for
 531 //@@a list of single-player missions, a subsequent call for a list of
 532 //@@anarchy missions would not scan again, and thus would not find the
 533 //@@anarchy-only missions.  If we retain the minimum level of install,
 534 //@@we may want to put the code back in, having it always scan for all
 535 //@@missions, and have the code that uses it sort out the ones it wants.
 536 //@@    if (num_missions != -1) {
 537 //@@            if (Current_mission_num != 0)
 538 //@@                    load_mission(0);                                //set built-in mission as default
 539 //@@            return num_missions;
 540 //@@    }
 541
 542         MALLOC(mission_list, mle, MAX_MISSIONS);
 543         num_missions = 0;
 544
 545         add_builtin_mission_to_list(mission_list + num_missions, builtin_mission_filename);  //read built-in first
 546         add_d1_builtin_mission_to_list(mission_list + num_missions);
 547         add_missions_to_list(mission_list + num_missions, anarchy_mode);
 548
 549         // move original missions (in story-chronological order)
 550         // to top of mission list
 551         top_place = 0;
 552         promote(mission_list, "descent", &top_place); // original descent 1 mission
 553         promote(mission_list, builtin_mission_filename, &top_place); // d2 or d2demo
 554         promote(mission_list, "d2x", &top_place); // vertigo
 555
 556         if (num_missions > top_place)
 557                 qsort(&mission_list[top_place],
 558                       num_missions - top_place,
 559                       sizeof(*mission_list),
 560                                 (int (*)( const void *, const void * ))ml_sort_func);
 561
 562
 563         if (num_missions > top_place)
 564                 qsort(&mission_list[top_place],
 565                       num_missions - top_place,
 566                       sizeof(*mission_list),
 567                       (int (*)( const void *, const void * ))ml_sort_func);
 568
 569         //load_mission(0);   //set built-in mission as default
 570
 571     atexit(free_mission);
 572
 573         return mission_list;
 574 }
 575
 576 void free_mission_list(mle *mission_list)
 577 {
 578         int i;
 579
 580         for (i = 0; i < num_missions; i++)
 581                 d_free(mission_list[i].filename);
 582
 583         d_free(mission_list);
 584         num_missions = 0;
 585 }
 586
 587 void init_extra_robot_movie(char *filename);
 588
 589 //values for built-in mission
 590
 591 //loads the specfied mission from the mission list.
 592 //build_mission_list() must have been called.
 593 //Returns true if mission loaded ok, else false.
 594 int load_mission(mle *mission)
 595 {
 596         CFILE *mfile;
 597         char buf[80], *v;
 598     int found_hogfile;
 599
 600     if (Current_mission)
 601         free_mission();
 602     Current_mission = d_malloc(sizeof(Mission));
 603     if (!Current_mission) return 0;
 604     *(mle *) Current_mission = *mission;
 605         Current_mission->filename = d_strdup(mission->filename); // don't want to lose it
 606
 607     // for Descent 1 missions, load descent.hog
 608     if (EMULATING_D1) {
 609         if (!cfile_init("descent.hog"))
 610             Warning("descent.hog not available, this mission may be missing some files required for briefings and exit sequence\n");
 611         if (!stricmp(Current_mission_filename, D1_MISSION_FILENAME))
 612             return load_mission_d1();
 613     }
 614
 615     if (PLAYING_BUILTIN_MISSION) {
 616                 switch (Current_mission->builtin_hogsize) {
 617                 case SHAREWARE_MISSION_HOGSIZE:
 618                 case MAC_SHARE_MISSION_HOGSIZE:
 619                         return load_mission_shareware();
 620                         break;
 621                 case OEM_MISSION_HOGSIZE:
 622                         return load_mission_oem();
 623                         break;
 624                 default:
 625                         Int3(); // fall through
 626                 case FULL_MISSION_HOGSIZE:
 627                 case FULL_10_MISSION_HOGSIZE:
 628                 case MAC_FULL_MISSION_HOGSIZE:
 629                         // continue on... (use d2.mn2 from hogfile)
 630                         break;
 631                 }
 632     }
 633
 634         mprintf(( 0, "Loading mission %s\n", Current_mission_filename ));
 635
 636         //read mission from file
 637
 638         switch (mission->location) {
 639         case ML_MISSIONDIR:
 640                 strcpy(buf,MISSION_DIR);
 641                 break;
 642         case ML_CDROM:
 643                 strcpy(buf,CDROM_dir);
 644                 break;
 645         default:
 646                 Int3();                                                 //fall through
 647         case ML_CURDIR:
 648                 strcpy(buf,"");
 649                 break;
 650         }
 651         strcat(buf, mission->filename);
 652         if (mission->descent_version == 2)
 653                 strcat(buf,".mn2");
 654         else
 655                 strcat(buf,".msn");
 656
 657         PHYSFSEXT_locateCorrectCase(buf);
 658
 659         mfile = cfopen(buf,"rb");
 660         if (mfile == NULL) {
 661         free_mission();
 662                 return 0;               //error!
 663         }
 664
 665     //for non-builtin missions, load HOG
 666     if (!PLAYING_BUILTIN_MISSION) {
 667
 668         strcpy(buf+strlen(buf)-4,".hog");               //change extension
 669
 670                 PHYSFSEXT_locateCorrectCase(buf);
 671
 672                 found_hogfile = cfile_init(buf);
 673
 674 #ifdef RELEASE                          //for release, require mission to be in hogfile
 675         if (! found_hogfile) {
 676             cfclose(mfile);
 677             free_mission();
 678             return 0;
 679         }
 680 #endif
 681     }
 682
 683     //init vars
 684         Last_level = 0;
 685         Last_secret_level = 0;
 686         Briefing_text_filename[0] = 0;
 687         Ending_text_filename[0] = 0;
 688
 689         while (cfgets(buf,80,mfile)) {
 690
 691                 if (istok(buf,"name")) {
 692                         Current_mission->enhanced = 0;
 693                         continue;                                               //already have name, go to next line
 694                 }
 695                 if (istok(buf,"xname")) {
 696                         Current_mission->enhanced = 1;
 697                         continue;                                               //already have name, go to next line
 698                 }
 699                 if (istok(buf,"zname")) {
 700                         Current_mission->enhanced = 2;
 701                         continue;                                               //already have name, go to next line
 702                 }
 703                 else if (istok(buf,"type"))
 704                         continue;                                               //already have name, go to next line
 705                 else if (istok(buf,"hog")) {
 706                         char    *bufp = buf;
 707
 708                         while (*(bufp++) != '=')
 709                                 ;
 710
 711                         if (*bufp == ' ')
 712                                 while (*(++bufp) == ' ')
 713                                         ;
 714
 715                         cfile_init(bufp);
 716                         mprintf((0, "Hog file override = [%s]\n", bufp));
 717                 }
 718                 else if (istok(buf,"briefing")) {
 719                         if ((v = get_value(buf)) != NULL) {
 720                                 add_term(v);
 721                                 if (strlen(v) < 13)
 722                                         strcpy(Briefing_text_filename,v);
 723                         }
 724                 }
 725                 else if (istok(buf,"ending")) {
 726                         if ((v = get_value(buf)) != NULL) {
 727                                 add_term(v);
 728                                 if (strlen(v) < 13)
 729                                         strcpy(Ending_text_filename,v);
 730                         }
 731                 }
 732                 else if (istok(buf,"num_levels")) {
 733
 734                         if ((v=get_value(buf))!=NULL) {
 735                                 int n_levels,i;
 736
 737                                 n_levels = atoi(v);
 738
 739                                 for (i=0;i<n_levels && cfgets(buf,80,mfile);i++) {
 740
 741                                         add_term(buf);
 742                                         if (strlen(buf) <= 12) {
 743                                                 strcpy(Level_names[i],buf);
 744                                                 Last_level++;
 745                                         }
 746                                         else
 747                                                 break;
 748                                 }
 749
 750                         }
 751                 }
 752                 else if (istok(buf,"num_secrets")) {
 753                         if ((v=get_value(buf))!=NULL) {
 754                                 int i;
 755
 756                                 N_secret_levels = atoi(v);
 757
 758                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 759
 760                                 for (i=0;i<N_secret_levels && cfgets(buf,80,mfile);i++) {
 761                                         char *t;
 762
 763
 764                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 765                                         else
 766                                                 break;
 767
 768                                         add_term(buf);
 769                                         if (strlen(buf) <= 12) {
 770                                                 strcpy(Secret_level_names[i],buf);
 771                                                 Secret_level_table[i] = atoi(t);
 772                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 773                                                         break;
 774                                                 Last_secret_level--;
 775                                         }
 776                                         else
 777                                                 break;
 778                                 }
 779
 780                         }
 781                 }
 782
 783         }
 784
 785         cfclose(mfile);
 786
 787         if (Last_level <= 0) {
 788                 free_mission();         //no valid mission loaded
 789                 return 0;
 790         }
 791
 792         if (Current_mission->enhanced) {
 793                 char t[50];
 794                 extern void bm_read_extra_robots();
 795                 sprintf(t,"%s.ham",Current_mission_filename);
 796                 bm_read_extra_robots(t, Current_mission->enhanced);
 797                 strncpy(t,Current_mission_filename,6);
 798                 init_extra_robot_movie(t);
 799         }
 800
 801         return 1;
 802 }
 803
 804 //loads the named mission if exists.
 805 //Returns true if mission loaded ok, else false.
 806 int load_mission_by_name(char *mission_name)
 807 {
 808         int i;
 809         mle *mission_list = build_mission_list(1);
 810         bool found = 0;
 811
 812         for (i = 0; i < num_missions; i++)
 813                 if (!stricmp(mission_name, mission_list[i].filename))
 814                         found = load_mission(mission_list + i);
 815
 816         free_mission_list(mission_list);
 817         return found;
 818 }
 819
 820 int select_mission(int anarchy_mode, char *message)
 821 {
 822     mle *mission_list = build_mission_list(anarchy_mode);
 823         int new_mission_num;
 824
 825     if (num_missions <= 1) {
 826         new_mission_num = load_mission(mission_list) ? 0 : -1;
 827     } else {
 828         int i, default_mission;
 829         char * m[MAX_MISSIONS];
 830
 831         default_mission = 0;
 832         for (i = 0; i < num_missions; i++) {
 833             m[i] = mission_list[i].mission_name;
 834             if ( !stricmp( m[i], config_last_mission ) )
 835                 default_mission = i;
 836         }
 837
 838         new_mission_num = newmenu_listbox1( message, num_missions, m, 1, default_mission, NULL );
 839
 840         if (new_mission_num >= 0) {
 841                         // Chose a mission
 842                         strcpy(config_last_mission, m[new_mission_num]  );
 843
 844                         if (!load_mission(mission_list + new_mission_num)) {
 845                                 nm_messagebox( NULL, 1, TXT_OK, TXT_MISSION_ERROR);
 846                                 new_mission_num = -1;
 847                         }
 848                 }
 849     }
 850
 851         free_mission_list(mission_list);
 852     return (new_mission_num >= 0);
 853 }