main/mission.c

   1 /* $Id: mission.c,v 1.27 2004-10-23 18:59:02 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
  47 mle Mission_list[MAX_MISSIONS];
  48
  49 int Current_mission_num;
  50 int N_secret_levels;    // Made a global by MK for scoring purposes.  August 1, 1995.
  51 char *Current_mission_filename,*Current_mission_longname;
  52
  53 int Builtin_mission_num;
  54 char Builtin_mission_filename[9];
  55 int Builtin_mission_hogsize;
  56
  57 int D1_Builtin_mission_num;
  58 char D1_Builtin_mission_filename[9];
  59 int D1_Builtin_mission_hogsize;
  60
  61 //this stuff should get defined elsewhere
  62
  63 char Level_names[MAX_LEVELS_PER_MISSION][FILENAME_LEN];
  64 char Secret_level_names[MAX_SECRET_LEVELS_PER_MISSION][FILENAME_LEN];
  65
  66 //values for d1 built-in mission
  67 #define BIM_LAST_LEVEL          27
  68 #define BIM_LAST_SECRET_LEVEL   -3
  69 #define BIM_BRIEFING_FILE       "briefing.tex"
  70 #define BIM_ENDING_FILE         "endreg.tex"
  71
  72 //
  73 //  Special versions of mission routines for d1 builtins
  74 //
  75
  76 int load_mission_d1(int mission_num)
  77 {
  78         int i;
  79
  80         cfile_use_descent1_hogfile("descent.hog");
  81
  82         Current_mission_num = mission_num;
  83         Current_mission_filename = Mission_list[mission_num].filename;
  84         Current_mission_longname = Mission_list[mission_num].mission_name;
  85
  86         switch (D1_Builtin_mission_hogsize) {
  87         case D1_SHAREWARE_MISSION_HOGSIZE:
  88         case D1_SHAREWARE_10_MISSION_HOGSIZE:
  89                 N_secret_levels = 0;
  90
  91                 Last_level = 7;
  92                 Last_secret_level = 0;
  93
  94                 //build level names
  95                 for (i=0;i<Last_level;i++)
  96                         sprintf(Level_names[i], "level%02d.sdl", i+1);
  97
  98                 break;
  99         case D1_MAC_SHARE_MISSION_HOGSIZE:
 100                 N_secret_levels = 0;
 101
 102                 Last_level = 3;
 103                 Last_secret_level = 0;
 104
 105                 //build level names
 106                 for (i=0;i<Last_level;i++)
 107                         sprintf(Level_names[i], "level%02d.sdl", i+1);
 108
 109                 break;
 110         case D1_OEM_MISSION_HOGSIZE:
 111         case D1_OEM_10_MISSION_HOGSIZE:
 112                 N_secret_levels = 1;
 113
 114                 Last_level = 15;
 115                 Last_secret_level = -1;
 116
 117                 //build level names
 118                 for (i=0; i < Last_level - 1; i++)
 119                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 120                 sprintf(Level_names[i], "saturn%02d.rdl", i+1);
 121                 for (i=0; i < -Last_secret_level; i++)
 122                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 123
 124                 Secret_level_table[0] = 10;
 125
 126                 break;
 127         default:
 128                 Int3(); // fall through
 129         case D1_MISSION_HOGSIZE:
 130         case D1_10_MISSION_HOGSIZE:
 131         case D1_MAC_MISSION_HOGSIZE:
 132                 N_secret_levels = 3;
 133
 134                 Last_level = BIM_LAST_LEVEL;
 135                 Last_secret_level = BIM_LAST_SECRET_LEVEL;
 136
 137                 //build level names
 138                 for (i=0;i<Last_level;i++)
 139                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 140                 for (i=0;i<-Last_secret_level;i++)
 141                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 142
 143                 Secret_level_table[0] = 10;
 144                 Secret_level_table[1] = 21;
 145                 Secret_level_table[2] = 24;
 146
 147                 break;
 148         }
 149         strcpy(Briefing_text_filename,BIM_BRIEFING_FILE);
 150         strcpy(Ending_text_filename,BIM_ENDING_FILE);
 151
 152         return 1;
 153 }
 154
 155
 156 //
 157 //  Special versions of mission routines for shareware
 158 //
 159
 160 int load_mission_shareware(int mission_num)
 161 {
 162         Current_mission_num = mission_num;
 163         Current_mission_filename = Mission_list[mission_num].filename;
 164         Current_mission_longname = Mission_list[mission_num].mission_name;
 165
 166         switch (Builtin_mission_hogsize) {
 167         case MAC_SHARE_MISSION_HOGSIZE:
 168                 N_secret_levels = 1;
 169
 170                 Last_level = 4;
 171                 Last_secret_level = -1;
 172
 173                 // mac demo is using the regular hog and rl2 files
 174                 strcpy(Level_names[0],"d2leva-1.rl2");
 175                 strcpy(Level_names[1],"d2leva-2.rl2");
 176                 strcpy(Level_names[2],"d2leva-3.rl2");
 177                 strcpy(Level_names[3],"d2leva-4.rl2");
 178                 strcpy(Secret_level_names[0],"d2leva-s.rl2");
 179                 break;
 180         default:
 181                 Int3(); // fall through
 182         case SHAREWARE_MISSION_HOGSIZE:
 183                 N_secret_levels = 0;
 184
 185                 Last_level = 3;
 186                 Last_secret_level = 0;
 187
 188                 strcpy(Level_names[0],"d2leva-1.sl2");
 189                 strcpy(Level_names[1],"d2leva-2.sl2");
 190                 strcpy(Level_names[2],"d2leva-3.sl2");
 191         }
 192
 193         return 1;
 194 }
 195
 196
 197 //
 198 //  Special versions of mission routines for Diamond/S3 version
 199 //
 200
 201 int load_mission_oem(int mission_num)
 202 {
 203         Current_mission_num = mission_num;
 204         Current_mission_filename = Mission_list[mission_num].filename;
 205         Current_mission_longname = Mission_list[mission_num].mission_name;
 206
 207         N_secret_levels = 2;
 208
 209         Last_level = 8;
 210         Last_secret_level = -2;
 211
 212         strcpy(Level_names[0],"d2leva-1.rl2");
 213         strcpy(Level_names[1],"d2leva-2.rl2");
 214         strcpy(Level_names[2],"d2leva-3.rl2");
 215         strcpy(Level_names[3],"d2leva-4.rl2");
 216
 217         strcpy(Secret_level_names[0],"d2leva-s.rl2");
 218
 219         strcpy(Level_names[4],"d2levb-1.rl2");
 220         strcpy(Level_names[5],"d2levb-2.rl2");
 221         strcpy(Level_names[6],"d2levb-3.rl2");
 222         strcpy(Level_names[7],"d2levb-4.rl2");
 223
 224         strcpy(Secret_level_names[1],"d2levb-s.rl2");
 225
 226         Secret_level_table[0] = 1;
 227         Secret_level_table[1] = 5;
 228
 229         return 1;
 230 }
 231
 232
 233 //compare a string for a token. returns true if match
 234 int istok(char *buf,char *tok)
 235 {
 236         return strnicmp(buf,tok,strlen(tok)) == 0;
 237
 238 }
 239
 240 //adds a terminating 0 after a string at the first white space
 241 void add_term(char *s)
 242 {
 243         while (*s && !isspace(*s)) s++;
 244
 245         *s = 0;         //terminate!
 246 }
 247
 248 //returns ptr to string after '=' & white space, or NULL if no '='
 249 //adds 0 after parm at first white space
 250 char *get_value(char *buf)
 251 {
 252         char *t;
 253
 254         t = strchr(buf,'=')+1;
 255
 256         if (t) {
 257                 while (*t && isspace(*t)) t++;
 258
 259                 if (*t)
 260                         return t;
 261         }
 262
 263         return NULL;            //error!
 264 }
 265
 266 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 267 char *get_parm_value(char *parm,CFILE *f)
 268 {
 269         static char buf[80];
 270
 271         if (!cfgets(buf,80,f))
 272                 return NULL;
 273
 274         if (istok(buf,parm))
 275                 return get_value(buf);
 276         else
 277                 return NULL;
 278 }
 279
 280 int ml_sort_func(mle *e0,mle *e1)
 281 {
 282         return stricmp(e0->mission_name,e1->mission_name);
 283
 284 }
 285
 286 extern char CDROM_dir[];
 287
 288 //returns 1 if file read ok, else 0
 289 int read_mission_file(char *filename,int count,int location)
 290 {
 291         char filename2[100];
 292         CFILE *mfile;
 293
 294         //printf("reading: %s\n", filename);
 295
 296         switch (location) {
 297                 case ML_MISSIONDIR:
 298                         strcpy(filename2,MISSION_DIR);
 299                         break;
 300
 301                 case ML_CDROM:
 302                         songs_stop_redbook();           //so we can read from the CD
 303                         strcpy(filename2,CDROM_dir);
 304                         break;
 305
 306                 default:
 307                         Int3();         //fall through
 308
 309                 case ML_CURDIR:
 310                         strcpy(filename2,"");
 311                         break;
 312         }
 313         strcat(filename2,filename);
 314
 315         mfile = cfopen(filename2,"rb");
 316
 317         if (mfile) {
 318                 char *p;
 319                 char temp[FILENAME_LEN],*t;
 320
 321                 strcpy(temp,filename);
 322                 if ((t = strchr(temp,'.')) == NULL)
 323                         return 0;       //missing extension
 324                 // look if it's .mn2 or .msn
 325                 Mission_list[count].descent_version = (t[3] == '2') ? 2 : 1;
 326                 *t = 0;                 //kill extension
 327
 328                 strncpy( Mission_list[count].filename, temp, 9 );
 329                 Mission_list[count].anarchy_only_flag = 0;
 330                 Mission_list[count].location = location;
 331
 332                 p = get_parm_value("name",mfile);
 333
 334                 if (!p) {               //try enhanced mission
 335                         cfseek(mfile,0,SEEK_SET);
 336                         p = get_parm_value("xname",mfile);
 337                 }
 338
 339                 if (!p) {       //try super-enhanced mission!
 340                         cfseek(mfile,0,SEEK_SET);
 341                         p = get_parm_value("zname",mfile);
 342                 }
 343
 344                 if (p) {
 345                         char *t;
 346                         if ((t=strchr(p,';'))!=NULL)
 347                                 *t=0;
 348                         t = p + strlen(p)-1;
 349                         while (isspace(*t)) t--;
 350                         strncpy(Mission_list[count].mission_name,p,MISSION_NAME_LEN);
 351                 }
 352                 else {
 353                         cfclose(mfile);
 354                         return 0;
 355                 }
 356
 357                 p = get_parm_value("type",mfile);
 358
 359                 //get mission type
 360                 if (p)
 361                         Mission_list[count].anarchy_only_flag = istok(p,"anarchy");
 362
 363                 cfclose(mfile);
 364
 365                 return 1;
 366         }
 367
 368         return 0;
 369 }
 370
 371 void add_d1_builtin_mission_to_list(int *count)
 372 {
 373         if (!cfexist("descent.hog"))
 374                 return;
 375
 376         D1_Builtin_mission_hogsize = cfile_size("descent.hog");
 377
 378         switch (D1_Builtin_mission_hogsize) {
 379         case D1_SHAREWARE_MISSION_HOGSIZE:
 380         case D1_SHAREWARE_10_MISSION_HOGSIZE:
 381         case D1_MAC_SHARE_MISSION_HOGSIZE:
 382                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 383                 strcpy(Mission_list[*count].mission_name, D1_SHAREWARE_MISSION_NAME);
 384                 Mission_list[*count].anarchy_only_flag = 0;
 385                 break;
 386         case D1_OEM_MISSION_HOGSIZE:
 387         case D1_OEM_10_MISSION_HOGSIZE:
 388                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 389                 strcpy(Mission_list[*count].mission_name, D1_OEM_MISSION_NAME);
 390                 Mission_list[*count].anarchy_only_flag = 0;
 391                 break;
 392         default:
 393                 Warning("Unknown D1 hogsize %d\n", D1_Builtin_mission_hogsize);
 394                 Int3();
 395                 // fall through
 396         case D1_MISSION_HOGSIZE:
 397         case D1_10_MISSION_HOGSIZE:
 398         case D1_MAC_MISSION_HOGSIZE:
 399                 strcpy(Mission_list[*count].filename, D1_MISSION_FILENAME);
 400                 strcpy(Mission_list[*count].mission_name, D1_MISSION_NAME);
 401                 Mission_list[*count].anarchy_only_flag = 0;
 402                 break;
 403         }
 404
 405         strcpy(D1_Builtin_mission_filename, Mission_list[*count].filename);
 406         Mission_list[*count].descent_version = 1;
 407         Mission_list[*count].anarchy_only_flag = 0;
 408         ++(*count);
 409 }
 410
 411
 412 void add_builtin_mission_to_list(int *count)
 413 {
 414         Builtin_mission_hogsize = cfile_size("descent2.hog");
 415         if (Builtin_mission_hogsize == -1)
 416                 Builtin_mission_hogsize = cfile_size("d2demo.hog");
 417
 418         switch (Builtin_mission_hogsize) {
 419         case SHAREWARE_MISSION_HOGSIZE:
 420         case MAC_SHARE_MISSION_HOGSIZE:
 421                 strcpy(Mission_list[*count].filename,SHAREWARE_MISSION_FILENAME);
 422                 strcpy(Mission_list[*count].mission_name,SHAREWARE_MISSION_NAME);
 423                 Mission_list[*count].anarchy_only_flag = 0;
 424                 break;
 425         case OEM_MISSION_HOGSIZE:
 426                 strcpy(Mission_list[*count].filename,OEM_MISSION_FILENAME);
 427                 strcpy(Mission_list[*count].mission_name,OEM_MISSION_NAME);
 428                 Mission_list[*count].anarchy_only_flag = 0;
 429                 break;
 430         default:
 431                 Warning("Unknown hogsize %d, trying %s\n", Builtin_mission_hogsize, FULL_MISSION_FILENAME ".mn2");
 432                 Int3(); //fall through
 433         case FULL_MISSION_HOGSIZE:
 434         case FULL_10_MISSION_HOGSIZE:
 435         case MAC_FULL_MISSION_HOGSIZE:
 436                 if (!read_mission_file(FULL_MISSION_FILENAME ".mn2", 0, ML_CURDIR))
 437                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
 438         }
 439
 440         strcpy(Builtin_mission_filename, Mission_list[*count].filename);
 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
 488
 489 //fills in the global list of missions.  Returns the number of missions
 490 //in the list.  If anarchy_mode set, don't include non-anarchy levels.
 491
 492 extern char CDROM_dir[];
 493 extern char AltHogDir[];
 494 extern char AltHogdir_initialized;
 495
 496 int build_mission_list(int anarchy_mode)
 497 {
 498         static int num_missions=-1;
 499         int count = 0;
 500         int top_place;
 501
 502         //now search for levels on disk
 503
 504 //@@Took out this code because after this routine was called once for
 505 //@@a list of single-player missions, a subsequent call for a list of
 506 //@@anarchy missions would not scan again, and thus would not find the
 507 //@@anarchy-only missions.  If we retain the minimum level of install,
 508 //@@we may want to put the code back in, having it always scan for all
 509 //@@missions, and have the code that uses it sort out the ones it wants.
 510 //@@    if (num_missions != -1) {
 511 //@@            if (Current_mission_num != 0)
 512 //@@                    load_mission(0);                                //set built-in mission as default
 513 //@@            return num_missions;
 514 //@@    }
 515
 516         add_builtin_mission_to_list(&count);  //read built-in first
 517         add_d1_builtin_mission_to_list(&count);
 518         add_missions_to_list(MISSION_DIR "*.mn2", &count, anarchy_mode);
 519         add_missions_to_list(MISSION_DIR "*.msn", &count, anarchy_mode);
 520
 521         if (AltHogdir_initialized) {
 522                 char search_name[PATH_MAX + 5];
 523                 strcpy(search_name, AltHogDir);
 524                 strcat(search_name, "/" MISSION_DIR "*.mn2");
 525                 add_missions_to_list(search_name, &count, anarchy_mode);
 526                 strcpy(search_name, AltHogDir);
 527                 strcat(search_name, "/" MISSION_DIR "*.msn");
 528                 add_missions_to_list(search_name, &count, anarchy_mode);
 529         }
 530
 531         // move original missions (in story-chronological order)
 532         // to top of mission list
 533         top_place = 0;
 534         promote("descent", &top_place, count); // original descent 1 mission
 535         D1_Builtin_mission_num = top_place - 1;
 536         promote(Builtin_mission_filename, &top_place, count); // d2 or d2demo
 537         Builtin_mission_num = top_place - 1;
 538         promote("d2x", &top_place, count); // vertigo
 539
 540         if (count > top_place)
 541                 qsort(&Mission_list[top_place],
 542                       count - top_place,
 543                       sizeof(*Mission_list),
 544                                 (int (*)( const void *, const void * ))ml_sort_func);
 545
 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         //load_mission(0);   //set built-in mission as default
 554
 555         num_missions = count;
 556
 557         return count;
 558 }
 559
 560 void init_extra_robot_movie(char *filename);
 561
 562 //values for built-in mission
 563
 564 //loads the specfied mission from the mission list.
 565 //build_mission_list() must have been called.
 566 //Returns true if mission loaded ok, else false.
 567 int load_mission(int mission_num)
 568 {
 569         CFILE *mfile;
 570         char buf[80], *v;
 571         int found_hogfile;
 572         int enhanced_mission = 0;
 573
 574         if (mission_num == D1_Builtin_mission_num) {
 575                 cfile_use_descent1_hogfile("descent.hog");
 576                 switch (D1_Builtin_mission_hogsize) {
 577                 default:
 578                         Int3(); // fall through
 579                 case D1_MISSION_HOGSIZE:
 580                 case D1_10_MISSION_HOGSIZE:
 581                 case D1_MAC_MISSION_HOGSIZE:
 582                 case D1_OEM_MISSION_HOGSIZE:
 583                 case D1_OEM_10_MISSION_HOGSIZE:
 584                 case D1_SHAREWARE_MISSION_HOGSIZE:
 585                 case D1_SHAREWARE_10_MISSION_HOGSIZE:
 586                 case D1_MAC_SHARE_MISSION_HOGSIZE:
 587                         return load_mission_d1(mission_num);
 588                         break;
 589                 }
 590         }
 591
 592         if (mission_num == Builtin_mission_num) {
 593                 switch (Builtin_mission_hogsize) {
 594                 case SHAREWARE_MISSION_HOGSIZE:
 595                 case MAC_SHARE_MISSION_HOGSIZE:
 596                         return load_mission_shareware(mission_num);
 597                         break;
 598                 case OEM_MISSION_HOGSIZE:
 599                         return load_mission_oem(mission_num);
 600                         break;
 601                 default:
 602                         Int3(); // fall through
 603                 case FULL_MISSION_HOGSIZE:
 604                 case FULL_10_MISSION_HOGSIZE:
 605                 case MAC_FULL_MISSION_HOGSIZE:
 606                         // continue on... (use d2.mn2 from hogfile)
 607                         break;
 608                 }
 609         }
 610
 611         Current_mission_num = mission_num;
 612
 613         mprintf(( 0, "Loading mission %d\n", mission_num ));
 614
 615         //read mission from file
 616
 617         switch (Mission_list[mission_num].location) {
 618         case ML_MISSIONDIR:
 619                 strcpy(buf,MISSION_DIR);
 620                 break;
 621         case ML_CDROM:
 622                 strcpy(buf,CDROM_dir);
 623                 break;
 624         default:
 625                 Int3();                                                 //fall through
 626         case ML_CURDIR:
 627                 strcpy(buf,"");
 628                 break;
 629         }
 630         strcat(buf,Mission_list[mission_num].filename);
 631         if (Mission_list[mission_num].descent_version == 2)
 632                 strcat(buf,".mn2");
 633         else
 634                 strcat(buf,".msn");
 635
 636         mfile = cfopen(buf,"rb");
 637         if (mfile == NULL) {
 638                 Current_mission_num = -1;
 639                 return 0;               //error!
 640         }
 641
 642         //for non-builtin missions, load HOG
 643         if (strcmp(Mission_list[mission_num].filename, Builtin_mission_filename)) {
 644
 645                 strcpy(buf+strlen(buf)-4,".hog");               //change extension
 646
 647                 found_hogfile = cfile_use_alternate_hogfile(buf);
 648
 649                 #ifdef RELEASE                          //for release, require mission to be in hogfile
 650                 if (! found_hogfile) {
 651                         cfclose(mfile);
 652                         Current_mission_num = -1;
 653                         return 0;
 654                 }
 655                 #endif
 656
 657                 // for Descent 1 missions, load descent.hog
 658                 if (Mission_list[mission_num].descent_version == 1 && strcmp(buf, "descent.hog"))
 659                         if (!cfile_use_descent1_hogfile("descent.hog"))
 660                                 Warning("descent.hog not available, this mission may be missing some files required for briefings and exit sequence\n");
 661         }
 662
 663         //init vars
 664         Last_level = 0;
 665         Last_secret_level = 0;
 666         Briefing_text_filename[0] = 0;
 667         Ending_text_filename[0] = 0;
 668
 669         while (cfgets(buf,80,mfile)) {
 670
 671                 if (istok(buf,"name"))
 672                         continue;                                               //already have name, go to next line
 673                 if (istok(buf,"xname")) {
 674                         enhanced_mission = 1;
 675                         continue;                                               //already have name, go to next line
 676                 }
 677                 if (istok(buf,"zname")) {
 678                         enhanced_mission = 2;
 679                         continue;                                               //already have name, go to next line
 680                 }
 681                 else if (istok(buf,"type"))
 682                         continue;                                               //already have name, go to next line
 683                 else if (istok(buf,"hog")) {
 684                         char    *bufp = buf;
 685
 686                         while (*(bufp++) != '=')
 687                                 ;
 688
 689                         if (*bufp == ' ')
 690                                 while (*(++bufp) == ' ')
 691                                         ;
 692
 693                         cfile_use_alternate_hogfile(bufp);
 694                         mprintf((0, "Hog file override = [%s]\n", bufp));
 695                 }
 696                 else if (istok(buf,"briefing")) {
 697                         if ((v = get_value(buf)) != NULL) {
 698                                 add_term(v);
 699                                 if (strlen(v) < 13)
 700                                         strcpy(Briefing_text_filename,v);
 701                         }
 702                 }
 703                 else if (istok(buf,"ending")) {
 704                         if ((v = get_value(buf)) != NULL) {
 705                                 add_term(v);
 706                                 if (strlen(v) < 13)
 707                                         strcpy(Ending_text_filename,v);
 708                         }
 709                 }
 710                 else if (istok(buf,"num_levels")) {
 711
 712                         if ((v=get_value(buf))!=NULL) {
 713                                 int n_levels,i;
 714
 715                                 n_levels = atoi(v);
 716
 717                                 for (i=0;i<n_levels && cfgets(buf,80,mfile);i++) {
 718
 719                                         add_term(buf);
 720                                         if (strlen(buf) <= 12) {
 721                                                 strcpy(Level_names[i],buf);
 722                                                 Last_level++;
 723                                         }
 724                                         else
 725                                                 break;
 726                                 }
 727
 728                         }
 729                 }
 730                 else if (istok(buf,"num_secrets")) {
 731                         if ((v=get_value(buf))!=NULL) {
 732                                 int i;
 733
 734                                 N_secret_levels = atoi(v);
 735
 736                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 737
 738                                 for (i=0;i<N_secret_levels && cfgets(buf,80,mfile);i++) {
 739                                         char *t;
 740
 741
 742                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 743                                         else
 744                                                 break;
 745
 746                                         add_term(buf);
 747                                         if (strlen(buf) <= 12) {
 748                                                 strcpy(Secret_level_names[i],buf);
 749                                                 Secret_level_table[i] = atoi(t);
 750                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 751                                                         break;
 752                                                 Last_secret_level--;
 753                                         }
 754                                         else
 755                                                 break;
 756                                 }
 757
 758                         }
 759                 }
 760
 761         }
 762
 763         cfclose(mfile);
 764
 765         if (Last_level <= 0) {
 766                 Current_mission_num = -1;               //no valid mission loaded
 767                 return 0;
 768         }
 769
 770         Current_mission_filename = Mission_list[Current_mission_num].filename;
 771         Current_mission_longname = Mission_list[Current_mission_num].mission_name;
 772
 773         if (enhanced_mission) {
 774                 char t[50];
 775                 extern void bm_read_extra_robots();
 776                 sprintf(t,"%s.ham",Current_mission_filename);
 777                 bm_read_extra_robots(t,enhanced_mission);
 778                 strncpy(t,Current_mission_filename,6);
 779                 strcat(t,"-l.mvl");
 780                 init_extra_robot_movie(t);
 781         }
 782
 783         return 1;
 784 }
 785
 786 //loads the named mission if exists.
 787 //Returns true if mission loaded ok, else false.
 788 int load_mission_by_name(char *mission_name)
 789 {
 790         int n,i;
 791
 792         n = build_mission_list(1);
 793
 794         for (i=0;i<n;i++)
 795                 if (!stricmp(mission_name,Mission_list[i].filename))
 796                         return load_mission(i);
 797
 798         return 0;               //couldn't find mission
 799 }
 800
 801 int select_mission(int anarchy_mode, char *message)
 802 {
 803     int n_missions;
 804
 805     n_missions = build_mission_list(anarchy_mode);
 806
 807     if (n_missions <= 1) {
 808         load_mission(0);
 809     } else {
 810         int new_mission_num,i, default_mission;
 811         char * m[MAX_MISSIONS];
 812
 813         default_mission = 0;
 814         for (i=0;i<n_missions;i++) {
 815             m[i] = Mission_list[i].mission_name;
 816             if ( !stricmp( m[i], config_last_mission ) )
 817                 default_mission = i;
 818         }
 819
 820         new_mission_num = newmenu_listbox1( message, n_missions, m, 1, default_mission, NULL );
 821
 822         if (new_mission_num == -1)
 823             return 0;         //abort!
 824
 825         strcpy(config_last_mission, m[new_mission_num]  );
 826
 827         if (!load_mission(new_mission_num)) {
 828             nm_messagebox( NULL, 1, TXT_OK, TXT_MISSION_ERROR);
 829             return 0;
 830         }
 831     }
 832
 833     return 1;
 834 }