main/mission.c

   1 /* $Id: mission.c,v 1.29 2004-10-24 12:46:49 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 #include "config.h"
  44 #include "newmenu.h"
  45 #include "text.h"
  46 #include "u_mem.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 mle Mission_list[MAX_MISSIONS];
  70
  71 int num_missions = -1;
  72
  73 Mission *Current_mission = NULL; // currently loaded mission
  74
  75 //
  76 //  Special versions of mission routines for d1 builtins
  77 //
  78
  79 int load_mission_d1(void)
  80 {
  81         int i;
  82
  83         switch (cfile_size("descent.hog")) {
  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(void)
 158 {
 159     strcpy(Current_mission->mission_name, SHAREWARE_MISSION_NAME);
 160     Current_mission->descent_version = 2;
 161     Current_mission->anarchy_only_flag = 0;
 162
 163     switch (Current_mission->builtin_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(void)
 199 {
 200     strcpy(Current_mission->mission_name, OEM_MISSION_NAME);
 201     Current_mission->descent_version = 2;
 202     Current_mission->anarchy_only_flag = 0;
 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     int size;
 371
 372         if (!cfexist("descent.hog"))
 373                 return;
 374
 375         size = cfile_size("descent.hog");
 376
 377         switch (size) {
 378         case D1_SHAREWARE_MISSION_HOGSIZE:
 379         case D1_SHAREWARE_10_MISSION_HOGSIZE:
 380         case D1_MAC_SHARE_MISSION_HOGSIZE:
 381                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 382                 strcpy(Mission_list[*count].mission_name, D1_SHAREWARE_MISSION_NAME);
 383                 Mission_list[*count].anarchy_only_flag = 0;
 384                 break;
 385         case D1_OEM_MISSION_HOGSIZE:
 386         case D1_OEM_10_MISSION_HOGSIZE:
 387                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 388                 strcpy(Mission_list[*count].mission_name, D1_OEM_MISSION_NAME);
 389                 Mission_list[*count].anarchy_only_flag = 0;
 390                 break;
 391         default:
 392                 Warning("Unknown D1 hogsize %d\n", size);
 393                 Int3();
 394                 // fall through
 395         case D1_MISSION_HOGSIZE:
 396         case D1_10_MISSION_HOGSIZE:
 397         case D1_MAC_MISSION_HOGSIZE:
 398                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 399                 strcpy(Mission_list[*count].mission_name, D1_MISSION_NAME);
 400                 Mission_list[*count].anarchy_only_flag = 0;
 401                 break;
 402         }
 403
 404         Mission_list[*count].descent_version = 1;
 405         Mission_list[*count].anarchy_only_flag = 0;
 406         ++(*count);
 407 }
 408
 409
 410 void add_builtin_mission_to_list(int *count, char *name)
 411 {
 412     int size = cfile_size("descent2.hog");
 413
 414         if (size == -1)
 415                 size = cfile_size("d2demo.hog");
 416
 417         switch (size) {
 418         case SHAREWARE_MISSION_HOGSIZE:
 419         case MAC_SHARE_MISSION_HOGSIZE:
 420                 strcpy(Mission_list[*count].filename,SHAREWARE_MISSION_FILENAME);
 421                 strcpy(Mission_list[*count].mission_name,SHAREWARE_MISSION_NAME);
 422                 Mission_list[*count].anarchy_only_flag = 0;
 423                 break;
 424         case OEM_MISSION_HOGSIZE:
 425                 strcpy(Mission_list[*count].filename,OEM_MISSION_FILENAME);
 426                 strcpy(Mission_list[*count].mission_name,OEM_MISSION_NAME);
 427                 Mission_list[*count].anarchy_only_flag = 0;
 428                 break;
 429         default:
 430                 Warning("Unknown hogsize %d, trying %s\n", size, FULL_MISSION_FILENAME ".mn2");
 431                 Int3(); //fall through
 432         case FULL_MISSION_HOGSIZE:
 433         case FULL_10_MISSION_HOGSIZE:
 434         case MAC_FULL_MISSION_HOGSIZE:
 435                 if (!read_mission_file(FULL_MISSION_FILENAME ".mn2", 0, ML_CURDIR))
 436                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
 437         }
 438
 439         strcpy(name, Mission_list[*count].filename);
 440     Mission_list[*count].builtin_hogsize = size;
 441         Mission_list[*count].descent_version = 2;
 442         Mission_list[*count].anarchy_only_flag = 0;
 443         ++(*count);
 444 }
 445
 446
 447 void add_missions_to_list(char *search_name, int *count, int anarchy_mode)
 448 {
 449         FILEFINDSTRUCT find;
 450         if( !FileFindFirst( search_name, &find ) ) {
 451                 do      {
 452                         if (read_mission_file( find.name, *count, ML_MISSIONDIR )) {
 453
 454                                 if (anarchy_mode || !Mission_list[*count].anarchy_only_flag)
 455                                         ++(*count);
 456                         }
 457
 458                 } while( !FileFindNext( &find ) && *count < MAX_MISSIONS);
 459                 FileFindClose();
 460                 if (*count >= MAX_MISSIONS)
 461                         mprintf((0, "Warning: more missions than d2x can handle\n"));
 462         }
 463 }
 464
 465 /* move <mission_name> to <place> on mission list, increment <place> */
 466 void promote (char * mission_name, int * top_place, int num_missions)
 467 {
 468         int i;
 469         char name[FILENAME_LEN], * t;
 470         strcpy(name, mission_name);
 471         if ((t = strchr(name,'.')) != NULL)
 472                 *t = 0; //kill extension
 473         //printf("promoting: %s\n", name);
 474         for (i = *top_place; i < num_missions; i++)
 475                 if (!stricmp(Mission_list[i].filename, name)) {
 476                         //swap mission positions
 477                         mle temp;
 478
 479                         temp = Mission_list[*top_place];
 480                         Mission_list[*top_place] = Mission_list[i];
 481                         Mission_list[i] = temp;
 482                         ++(*top_place);
 483                         break;
 484                 }
 485 }
 486
 487 void free_mission(void)
 488 {
 489     // May become more complex with the editor
 490     if (Current_mission) {
 491         d_free(Current_mission);
 492     }
 493 }
 494
 495
 496
 497 //fills in the global list of missions.  Returns the number of missions
 498 //in the list.  If anarchy_mode is set, then also add anarchy-only missions.
 499
 500 extern char CDROM_dir[];
 501 extern char AltHogDir[];
 502 extern char AltHogdir_initialized;
 503
 504 int build_mission_list(int anarchy_mode)
 505 {
 506         static int num_missions=-1;
 507         int count = 0;
 508         int top_place;
 509     char        builtin_mission_filename[FILENAME_LEN];
 510
 511         //now search for levels on disk
 512
 513 //@@Took out this code because after this routine was called once for
 514 //@@a list of single-player missions, a subsequent call for a list of
 515 //@@anarchy missions would not scan again, and thus would not find the
 516 //@@anarchy-only missions.  If we retain the minimum level of install,
 517 //@@we may want to put the code back in, having it always scan for all
 518 //@@missions, and have the code that uses it sort out the ones it wants.
 519 //@@    if (num_missions != -1) {
 520 //@@            if (Current_mission_num != 0)
 521 //@@                    load_mission(0);                                //set built-in mission as default
 522 //@@            return num_missions;
 523 //@@    }
 524
 525         add_builtin_mission_to_list(&count, builtin_mission_filename);  //read built-in first
 526         add_d1_builtin_mission_to_list(&count);
 527         add_missions_to_list(MISSION_DIR "*.mn2", &count, anarchy_mode);
 528         add_missions_to_list(MISSION_DIR "*.msn", &count, anarchy_mode);
 529
 530         if (AltHogdir_initialized) {
 531                 char search_name[PATH_MAX + 5];
 532                 strcpy(search_name, AltHogDir);
 533                 strcat(search_name, "/" MISSION_DIR "*.mn2");
 534                 add_missions_to_list(search_name, &count, anarchy_mode);
 535                 strcpy(search_name, AltHogDir);
 536                 strcat(search_name, "/" MISSION_DIR "*.msn");
 537                 add_missions_to_list(search_name, &count, anarchy_mode);
 538         }
 539
 540         // move original missions (in story-chronological order)
 541         // to top of mission list
 542         top_place = 0;
 543         promote("descent", &top_place, count); // original descent 1 mission
 544         promote(builtin_mission_filename, &top_place, count); // d2 or d2demo
 545         promote("d2x", &top_place, count); // vertigo
 546
 547         if (count > top_place)
 548                 qsort(&Mission_list[top_place],
 549                       count - top_place,
 550                       sizeof(*Mission_list),
 551                                 (int (*)( const void *, const void * ))ml_sort_func);
 552
 553
 554         if (count > top_place)
 555                 qsort(&Mission_list[top_place],
 556                       count - 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         num_missions = count;
 563
 564     atexit(free_mission);
 565
 566         return count;
 567 }
 568
 569 void init_extra_robot_movie(char *filename);
 570
 571 //values for built-in mission
 572
 573 //loads the specfied mission from the mission list.
 574 //build_mission_list() must have been called.
 575 //Returns true if mission loaded ok, else false.
 576 int load_mission(int mission_num)
 577 {
 578         CFILE *mfile;
 579         char buf[80], *v;
 580     int found_hogfile;
 581         int enhanced_mission = 0;
 582
 583     if (Current_mission)
 584         free_mission();
 585     Current_mission = d_malloc(sizeof(Mission));
 586     if (!Current_mission) return 0;
 587     *(mle *) Current_mission = Mission_list[mission_num];
 588
 589     // for Descent 1 missions, load descent.hog
 590     if (EMULATING_D1) {
 591         if (!cfile_use_descent1_hogfile("descent.hog"))
 592             Warning("descent.hog not available, this mission may be missing some files required for briefings and exit sequence\n");
 593         if (!stricmp(Current_mission_filename, D1_MISSION_FILENAME))
 594             return load_mission_d1();
 595     }
 596
 597     if (PLAYING_BUILTIN_MISSION) {
 598                 switch (Current_mission->builtin_hogsize) {
 599                 case SHAREWARE_MISSION_HOGSIZE:
 600                 case MAC_SHARE_MISSION_HOGSIZE:
 601                         return load_mission_shareware();
 602                         break;
 603                 case OEM_MISSION_HOGSIZE:
 604                         return load_mission_oem();
 605                         break;
 606                 default:
 607                         Int3(); // fall through
 608                 case FULL_MISSION_HOGSIZE:
 609                 case FULL_10_MISSION_HOGSIZE:
 610                 case MAC_FULL_MISSION_HOGSIZE:
 611                         // continue on... (use d2.mn2 from hogfile)
 612                         break;
 613                 }
 614     }
 615
 616         mprintf(( 0, "Loading mission %s\n", Current_mission_filename ));
 617
 618         //read mission from file
 619
 620         switch (Mission_list[mission_num].location) {
 621         case ML_MISSIONDIR:
 622                 strcpy(buf,MISSION_DIR);
 623                 break;
 624         case ML_CDROM:
 625                 strcpy(buf,CDROM_dir);
 626                 break;
 627         default:
 628                 Int3();                                                 //fall through
 629         case ML_CURDIR:
 630                 strcpy(buf,"");
 631                 break;
 632         }
 633         strcat(buf,Mission_list[mission_num].filename);
 634         if (Mission_list[mission_num].descent_version == 2)
 635                 strcat(buf,".mn2");
 636         else
 637                 strcat(buf,".msn");
 638
 639         mfile = cfopen(buf,"rb");
 640         if (mfile == NULL) {
 641         free_mission();
 642                 return 0;               //error!
 643         }
 644
 645     //for non-builtin missions, load HOG
 646     if (!PLAYING_BUILTIN_MISSION) {
 647
 648         strcpy(buf+strlen(buf)-4,".hog");               //change extension
 649
 650         found_hogfile = cfile_use_alternate_hogfile(buf);
 651
 652 #ifdef RELEASE                          //for release, require mission to be in hogfile
 653         if (! found_hogfile) {
 654             cfclose(mfile);
 655             free_mission();
 656             return 0;
 657         }
 658 #endif
 659     }
 660
 661     //init vars
 662         Last_level = 0;
 663         Last_secret_level = 0;
 664         Briefing_text_filename[0] = 0;
 665         Ending_text_filename[0] = 0;
 666
 667         while (cfgets(buf,80,mfile)) {
 668
 669                 if (istok(buf,"name"))
 670                         continue;                                               //already have name, go to next line
 671                 if (istok(buf,"xname")) {
 672                         enhanced_mission = 1;
 673                         continue;                                               //already have name, go to next line
 674                 }
 675                 if (istok(buf,"zname")) {
 676                         enhanced_mission = 2;
 677                         continue;                                               //already have name, go to next line
 678                 }
 679                 else if (istok(buf,"type"))
 680                         continue;                                               //already have name, go to next line
 681                 else if (istok(buf,"hog")) {
 682                         char    *bufp = buf;
 683
 684                         while (*(bufp++) != '=')
 685                                 ;
 686
 687                         if (*bufp == ' ')
 688                                 while (*(++bufp) == ' ')
 689                                         ;
 690
 691                         cfile_use_alternate_hogfile(bufp);
 692                         mprintf((0, "Hog file override = [%s]\n", bufp));
 693                 }
 694                 else if (istok(buf,"briefing")) {
 695                         if ((v = get_value(buf)) != NULL) {
 696                                 add_term(v);
 697                                 if (strlen(v) < 13)
 698                                         strcpy(Briefing_text_filename,v);
 699                         }
 700                 }
 701                 else if (istok(buf,"ending")) {
 702                         if ((v = get_value(buf)) != NULL) {
 703                                 add_term(v);
 704                                 if (strlen(v) < 13)
 705                                         strcpy(Ending_text_filename,v);
 706                         }
 707                 }
 708                 else if (istok(buf,"num_levels")) {
 709
 710                         if ((v=get_value(buf))!=NULL) {
 711                                 int n_levels,i;
 712
 713                                 n_levels = atoi(v);
 714
 715                                 for (i=0;i<n_levels && cfgets(buf,80,mfile);i++) {
 716
 717                                         add_term(buf);
 718                                         if (strlen(buf) <= 12) {
 719                                                 strcpy(Level_names[i],buf);
 720                                                 Last_level++;
 721                                         }
 722                                         else
 723                                                 break;
 724                                 }
 725
 726                         }
 727                 }
 728                 else if (istok(buf,"num_secrets")) {
 729                         if ((v=get_value(buf))!=NULL) {
 730                                 int i;
 731
 732                                 N_secret_levels = atoi(v);
 733
 734                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 735
 736                                 for (i=0;i<N_secret_levels && cfgets(buf,80,mfile);i++) {
 737                                         char *t;
 738
 739
 740                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 741                                         else
 742                                                 break;
 743
 744                                         add_term(buf);
 745                                         if (strlen(buf) <= 12) {
 746                                                 strcpy(Secret_level_names[i],buf);
 747                                                 Secret_level_table[i] = atoi(t);
 748                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 749                                                         break;
 750                                                 Last_secret_level--;
 751                                         }
 752                                         else
 753                                                 break;
 754                                 }
 755
 756                         }
 757                 }
 758
 759         }
 760
 761         cfclose(mfile);
 762
 763         if (Last_level <= 0) {
 764                 free_mission();         //no valid mission loaded
 765                 return 0;
 766         }
 767
 768         if (enhanced_mission) {
 769                 char t[50];
 770                 extern void bm_read_extra_robots();
 771                 sprintf(t,"%s.ham",Current_mission_filename);
 772                 bm_read_extra_robots(t,enhanced_mission);
 773                 strncpy(t,Current_mission_filename,6);
 774                 strcat(t,"-l.mvl");
 775                 init_extra_robot_movie(t);
 776         }
 777
 778         return 1;
 779 }
 780
 781 //loads the named mission if exists.
 782 //Returns true if mission loaded ok, else false.
 783 int load_mission_by_name(char *mission_name)
 784 {
 785         int n,i;
 786
 787         n = build_mission_list(1);
 788
 789         for (i=0;i<n;i++)
 790                 if (!stricmp(mission_name,Mission_list[i].filename))
 791                         return load_mission(i);
 792
 793         return 0;               //couldn't find mission
 794 }
 795
 796 int select_mission(int anarchy_mode, char *message)
 797 {
 798     int n_missions;
 799
 800     n_missions = build_mission_list(anarchy_mode);
 801
 802     if (n_missions <= 1) {
 803         load_mission(0);
 804     } else {
 805         int new_mission_num,i, default_mission;
 806         char * m[MAX_MISSIONS];
 807
 808         default_mission = 0;
 809         for (i=0;i<n_missions;i++) {
 810             m[i] = Mission_list[i].mission_name;
 811             if ( !stricmp( m[i], config_last_mission ) )
 812                 default_mission = i;
 813         }
 814
 815         new_mission_num = newmenu_listbox1( message, n_missions, m, 1, default_mission, NULL );
 816
 817         if (new_mission_num == -1)
 818             return 0;         //abort!
 819
 820         strcpy(config_last_mission, m[new_mission_num]  );
 821
 822         if (!load_mission(new_mission_num)) {
 823             nm_messagebox( NULL, 1, TXT_OK, TXT_MISSION_ERROR);
 824             return 0;
 825         }
 826     }
 827
 828     return 1;
 829 }