main/mission.c

   1 /*
   2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   3 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   6 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   8 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
   9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  12 */
  13
  14 /*
  15  *
  16  * Code to handle multiple missions
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <conf.h>
  22 #endif
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <ctype.h>
  28 #include <limits.h>
  29
  30 #include "cfile.h"
  31 #include "strutil.h"
  32 #include "inferno.h"
  33 #include "mono.h"
  34 #include "error.h"
  35 #include "u_mem.h"
  36 #include "ignorecase.h"
  37
  38
  39 //values for d1 built-in mission
  40 #define BIM_LAST_LEVEL          27
  41 #define BIM_LAST_SECRET_LEVEL   -3
  42 #define BIM_BRIEFING_FILE       "briefing.tex"
  43 #define BIM_ENDING_FILE         "endreg.tex"
  44
  45 #define OEM_LAST_LEVEL          15
  46 #define OEM_LAST_SECRET_LEVEL   -1
  47 #define OEM_BRIEFING_FILE       "briefsat.tex"
  48 #define OEM_ENDING_FILE         "endsat.tex"
  49
  50 #define SHAREWARE_LAST_LEVEL    7
  51 #define SHAREWARE_ENDING_FILE   "ending.tex"
  52
  53 #define MAC_SHARE_LAST_LEVEL    3
  54
  55
  56 //mission list entry
  57 typedef struct mle {
  58         char    *filename;          // filename without extension
  59         int     builtin_hogsize;    // if it's the built-in mission, used for determining the version
  60         char    mission_name[MISSION_NAME_LEN+1];
  61         ubyte   descent_version;    // descent 1 or descent 2?
  62         ubyte   anarchy_only_flag;  // if true, mission is anarchy only
  63         char    *path;                          // relative file path
  64         int             location;           // see defines below
  65 } mle;
  66
  67 //values that describe where a mission is located
  68 #define ML_CURDIR       0
  69 #define ML_MISSIONDIR   1
  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 = SHAREWARE_LAST_LEVEL;
  89                 Last_secret_level = 0;
  90                 strcpy(Briefing_text_filename, BIM_BRIEFING_FILE);
  91                 strcpy(Ending_text_filename, SHAREWARE_ENDING_FILE);
  92
  93                 //build level names
  94                 for (i=0;i<Last_level;i++)
  95                         sprintf(Level_names[i], "level%02d.sdl", i+1);
  96
  97                 break;
  98         case D1_MAC_SHARE_MISSION_HOGSIZE:
  99                 N_secret_levels = 0;
 100
 101                 Last_level = MAC_SHARE_LAST_LEVEL;
 102                 Last_secret_level = 0;
 103                 strcpy(Briefing_text_filename, BIM_BRIEFING_FILE);
 104                 strcpy(Ending_text_filename, SHAREWARE_ENDING_FILE);
 105
 106                 //build level names
 107                 for (i=0;i<Last_level;i++)
 108                         sprintf(Level_names[i], "level%02d.sdl", i+1);
 109
 110                 break;
 111         case D1_OEM_MISSION_HOGSIZE:
 112         case D1_OEM_10_MISSION_HOGSIZE:
 113                 N_secret_levels = 1;
 114
 115                 Last_level = OEM_LAST_LEVEL;
 116                 Last_secret_level = OEM_LAST_SECRET_LEVEL;
 117                 strcpy(Briefing_text_filename, OEM_BRIEFING_FILE);
 118                 strcpy(Ending_text_filename, OEM_ENDING_FILE);
 119
 120                 //build level names
 121                 for (i=0; i < Last_level - 1; i++)
 122                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 123                 sprintf(Level_names[i], "saturn%02d.rdl", i+1);
 124                 for (i=0; i < -Last_secret_level; i++)
 125                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 126
 127                 Secret_level_table[0] = 10;
 128
 129                 break;
 130         default:
 131                 Int3(); // fall through
 132         case D1_MISSION_HOGSIZE:
 133         case D1_10_MISSION_HOGSIZE:
 134         case D1_MAC_MISSION_HOGSIZE:
 135                 N_secret_levels = 3;
 136
 137                 Last_level = BIM_LAST_LEVEL;
 138                 Last_secret_level = BIM_LAST_SECRET_LEVEL;
 139                 strcpy(Briefing_text_filename, BIM_BRIEFING_FILE);
 140                 strcpy(Ending_text_filename, BIM_ENDING_FILE);
 141
 142                 //build level names
 143                 for (i=0;i<Last_level;i++)
 144                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 145                 for (i=0;i<-Last_secret_level;i++)
 146                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 147
 148                 Secret_level_table[0] = 10;
 149                 Secret_level_table[1] = 21;
 150                 Secret_level_table[2] = 24;
 151
 152                 break;
 153         }
 154
 155         return 1;
 156 }
 157
 158
 159 //
 160 //  Special versions of mission routines for shareware
 161 //
 162
 163 int load_mission_shareware(void)
 164 {
 165     strcpy(Current_mission->mission_name, SHAREWARE_MISSION_NAME);
 166     Current_mission->descent_version = 2;
 167     Current_mission->anarchy_only_flag = 0;
 168
 169     switch (Current_mission->builtin_hogsize) {
 170         case MAC_SHARE_MISSION_HOGSIZE:
 171                 N_secret_levels = 1;
 172
 173                 Last_level = 4;
 174                 Last_secret_level = -1;
 175
 176                 // mac demo is using the regular hog and rl2 files
 177                 strcpy(Level_names[0],"d2leva-1.rl2");
 178                 strcpy(Level_names[1],"d2leva-2.rl2");
 179                 strcpy(Level_names[2],"d2leva-3.rl2");
 180                 strcpy(Level_names[3],"d2leva-4.rl2");
 181                 strcpy(Secret_level_names[0],"d2leva-s.rl2");
 182                 break;
 183         default:
 184                 Int3(); // fall through
 185         case SHAREWARE_MISSION_HOGSIZE:
 186                 N_secret_levels = 0;
 187
 188                 Last_level = 3;
 189                 Last_secret_level = 0;
 190
 191                 strcpy(Level_names[0],"d2leva-1.sl2");
 192                 strcpy(Level_names[1],"d2leva-2.sl2");
 193                 strcpy(Level_names[2],"d2leva-3.sl2");
 194         }
 195
 196         return 1;
 197 }
 198
 199
 200 //
 201 //  Special versions of mission routines for Diamond/S3 version
 202 //
 203
 204 int load_mission_oem(void)
 205 {
 206     strcpy(Current_mission->mission_name, OEM_MISSION_NAME);
 207     Current_mission->descent_version = 2;
 208     Current_mission->anarchy_only_flag = 0;
 209
 210         N_secret_levels = 2;
 211
 212         Last_level = 8;
 213         Last_secret_level = -2;
 214
 215         strcpy(Level_names[0],"d2leva-1.rl2");
 216         strcpy(Level_names[1],"d2leva-2.rl2");
 217         strcpy(Level_names[2],"d2leva-3.rl2");
 218         strcpy(Level_names[3],"d2leva-4.rl2");
 219
 220         strcpy(Secret_level_names[0],"d2leva-s.rl2");
 221
 222         strcpy(Level_names[4],"d2levb-1.rl2");
 223         strcpy(Level_names[5],"d2levb-2.rl2");
 224         strcpy(Level_names[6],"d2levb-3.rl2");
 225         strcpy(Level_names[7],"d2levb-4.rl2");
 226
 227         strcpy(Secret_level_names[1],"d2levb-s.rl2");
 228
 229         Secret_level_table[0] = 1;
 230         Secret_level_table[1] = 5;
 231
 232         return 1;
 233 }
 234
 235
 236 //compare a string for a token. returns true if match
 237 int istok(char *buf,char *tok)
 238 {
 239         return strnicmp(buf,tok,strlen(tok)) == 0;
 240
 241 }
 242
 243 //adds a terminating 0 after a string at the first white space
 244 void add_term(char *s)
 245 {
 246         while (*s && !isspace(*s)) s++;
 247
 248         *s = 0;         //terminate!
 249 }
 250
 251 //returns ptr to string after '=' & white space, or NULL if no '='
 252 //adds 0 after parm at first white space
 253 char *get_value(char *buf)
 254 {
 255         char *t;
 256
 257         t = strchr(buf,'=')+1;
 258
 259         if (t) {
 260                 while (*t && isspace(*t)) t++;
 261
 262                 if (*t)
 263                         return t;
 264         }
 265
 266         return NULL;            //error!
 267 }
 268
 269 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 270 char *get_parm_value(char *parm,CFILE *f)
 271 {
 272         static char buf[80];
 273
 274         if (!cfgets(buf,80,f))
 275                 return NULL;
 276
 277         if (istok(buf,parm))
 278                 return get_value(buf);
 279         else
 280                 return NULL;
 281 }
 282
 283 int ml_sort_func(mle *e0,mle *e1)
 284 {
 285         return stricmp(e0->mission_name,e1->mission_name);
 286
 287 }
 288
 289
 290 //returns 1 if file read ok, else 0
 291 int read_mission_file(mle *mission, char *filename, int location)
 292 {
 293         char filename2[100];
 294         CFILE *mfile;
 295
 296         //printf("reading: %s\n", filename);
 297
 298         switch (location) {
 299                 case ML_MISSIONDIR:
 300                         strcpy(filename2,MISSION_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[PATH_MAX], *ext;
 317
 318                 strcpy(temp,filename);
 319                 p = strrchr(temp, '/'); // get the filename at the end of the path
 320                 if (!p)
 321                         p = temp;
 322                 else p++;
 323
 324                 if ((ext = strchr(p, '.')) == NULL)
 325                         return 0;       //missing extension
 326                 // look if it's .mn2 or .msn
 327                 mission->descent_version = (ext[3] == '2') ? 2 : 1;
 328                 *ext = 0;                       //kill extension
 329
 330                 mission->path = d_strdup(temp);
 331                 mission->anarchy_only_flag = 0;
 332                 mission->filename = mission->path + (p - temp);
 333                 mission->location = location;
 334
 335                 p = get_parm_value("name",mfile);
 336
 337                 if (!p) {               //try enhanced mission
 338                         cfseek(mfile,0,SEEK_SET);
 339                         p = get_parm_value("xname",mfile);
 340                 }
 341
 342                 if (!p) {       //try super-enhanced mission!
 343                         cfseek(mfile,0,SEEK_SET);
 344                         p = get_parm_value("zname",mfile);
 345                 }
 346
 347                 if (p) {
 348                         char *t;
 349                         if ((t=strchr(p,';'))!=NULL)
 350                                 *t=0;
 351                         t = p + strlen(p)-1;
 352                         while (isspace(*t))
 353                                 *t-- = 0; // remove trailing whitespace
 354                         if (strlen(p) > MISSION_NAME_LEN)
 355                                 p[MISSION_NAME_LEN] = 0;
 356                         strncpy(mission->mission_name, p, MISSION_NAME_LEN + 1);
 357                 }
 358                 else {
 359                         cfclose(mfile);
 360                         d_free(mission->path);
 361                         return 0;
 362                 }
 363
 364                 p = get_parm_value("type",mfile);
 365
 366                 //get mission type
 367                 if (p)
 368                         mission->anarchy_only_flag = istok(p,"anarchy");
 369
 370                 cfclose(mfile);
 371
 372                 return 1;
 373         }
 374
 375         return 0;
 376 }
 377
 378 void add_d1_builtin_mission_to_list(mle *mission)
 379 {
 380     int size;
 381
 382         if (!cfexist("descent.hog"))
 383                 return;
 384
 385         size = cfile_size("descent.hog");
 386
 387         switch (size) {
 388         case D1_SHAREWARE_MISSION_HOGSIZE:
 389         case D1_SHAREWARE_10_MISSION_HOGSIZE:
 390         case D1_MAC_SHARE_MISSION_HOGSIZE:
 391                 mission->filename = d_strdup(D1_MISSION_FILENAME);
 392                 strcpy(mission->mission_name, D1_SHAREWARE_MISSION_NAME);
 393                 mission->anarchy_only_flag = 0;
 394                 break;
 395         case D1_OEM_MISSION_HOGSIZE:
 396         case D1_OEM_10_MISSION_HOGSIZE:
 397                 mission->filename = d_strdup(D1_MISSION_FILENAME);
 398                 strcpy(mission->mission_name, D1_OEM_MISSION_NAME);
 399                 mission->anarchy_only_flag = 0;
 400                 break;
 401         default:
 402                 Warning("Unknown D1 hogsize %d\n", size);
 403                 Int3();
 404                 // fall through
 405         case D1_MISSION_HOGSIZE:
 406         case D1_10_MISSION_HOGSIZE:
 407         case D1_MAC_MISSION_HOGSIZE:
 408                 mission->filename = d_strdup(D1_MISSION_FILENAME);
 409                 strcpy(mission->mission_name, D1_MISSION_NAME);
 410                 mission->anarchy_only_flag = 0;
 411                 break;
 412         }
 413
 414         mission->descent_version = 1;
 415         mission->anarchy_only_flag = 0;
 416         mission->builtin_hogsize = 0;
 417         mission->path = mission->filename;
 418         num_missions++;
 419 }
 420
 421
 422 void add_builtin_mission_to_list(mle *mission, char *name)
 423 {
 424     int size = cfile_size("descent2.hog");
 425
 426         if (size == -1)
 427                 size = cfile_size("d2demo.hog");
 428
 429         switch (size) {
 430         case SHAREWARE_MISSION_HOGSIZE:
 431         case MAC_SHARE_MISSION_HOGSIZE:
 432                 mission->filename = d_strdup(SHAREWARE_MISSION_FILENAME);
 433                 strcpy(mission->mission_name,SHAREWARE_MISSION_NAME);
 434                 mission->anarchy_only_flag = 0;
 435                 break;
 436         case OEM_MISSION_HOGSIZE:
 437                 mission->filename = d_strdup(OEM_MISSION_FILENAME);
 438                 strcpy(mission->mission_name,OEM_MISSION_NAME);
 439                 mission->anarchy_only_flag = 0;
 440                 break;
 441         default:
 442                 Warning("Unknown hogsize %d, trying %s\n", size, FULL_MISSION_FILENAME ".mn2");
 443                 Int3(); //fall through
 444         case FULL_MISSION_HOGSIZE:
 445         case FULL_10_MISSION_HOGSIZE:
 446         case MAC_FULL_MISSION_HOGSIZE:
 447                 if (!read_mission_file(mission, FULL_MISSION_FILENAME ".mn2", ML_CURDIR))
 448                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
 449         }
 450
 451         mission->path = mission->filename;
 452         strcpy(name, mission->filename);
 453     mission->builtin_hogsize = size;
 454         mission->descent_version = 2;
 455         mission->anarchy_only_flag = 0;
 456         num_missions++;
 457 }
 458
 459
 460 void add_missions_to_list(mle *mission_list, char *path, char *rel_path, int anarchy_mode)
 461 {
 462         char **find, **i, *ext;
 463
 464         find = PHYSFS_enumerateFiles(path);
 465
 466         for (i = find; *i != NULL; i++)
 467         {
 468                 if (strlen(path) + strlen(*i) + 1 >= PATH_MAX)
 469                         continue;       // path is too long
 470
 471                 strcat(rel_path, *i);
 472                 if (PHYSFS_isDirectory(path))
 473                 {
 474                         strcat(rel_path, "/");
 475                         add_missions_to_list(mission_list, path, rel_path, anarchy_mode);
 476                         *(strrchr(path, '/')) = 0;
 477                 }
 478                 else if ((ext = strrchr(*i, '.')) && (!strnicmp(ext, ".msn", 4) || !strnicmp(ext, ".mn2", 4)))
 479                         if (read_mission_file(&mission_list[num_missions], rel_path, ML_MISSIONDIR))
 480                         {
 481                                 if (anarchy_mode || !mission_list[num_missions].anarchy_only_flag)
 482                                 {
 483                                         mission_list[num_missions].builtin_hogsize = 0;
 484                                         num_missions++;
 485                                 }
 486                                 else
 487                                         d_free(mission_list[num_missions].path);
 488                         }
 489
 490                 if (num_missions >= MAX_MISSIONS)
 491                 {
 492                         mprintf((0, "Warning: more missions than d2x can handle\n"));
 493                         break;
 494                 }
 495
 496                 (strrchr(path, '/'))[1] = 0;    // chop off the entry
 497         }
 498
 499         PHYSFS_freeList(find);
 500 }
 501
 502 /* move <mission_name> to <place> on mission list, increment <place> */
 503 void promote (mle *mission_list, char * mission_name, int * top_place)
 504 {
 505         int i;
 506         char name[FILENAME_LEN], * t;
 507         strcpy(name, mission_name);
 508         if ((t = strchr(name,'.')) != NULL)
 509                 *t = 0; //kill extension
 510         //printf("promoting: %s\n", name);
 511         for (i = *top_place; i < num_missions; i++)
 512                 if (!stricmp(mission_list[i].filename, name)) {
 513                         //swap mission positions
 514                         mle temp;
 515
 516                         temp = mission_list[*top_place];
 517                         mission_list[*top_place] = mission_list[i];
 518                         mission_list[i] = temp;
 519                         ++(*top_place);
 520                         break;
 521                 }
 522 }
 523
 524 void free_mission(void)
 525 {
 526     // May become more complex with the editor
 527     if (Current_mission) {
 528                 d_free(Current_mission->filename);
 529         d_free(Current_mission);
 530     }
 531 }
 532
 533
 534
 535 //fills in the global list of missions.  Returns the number of missions
 536 //in the list.  If anarchy_mode is set, then also add anarchy-only missions.
 537
 538 #if 0
 539 extern char AltHogDir[];
 540 extern char AltHogdir_initialized;
 541 #endif
 542
 543 mle *build_mission_list(int anarchy_mode)
 544 {
 545         mle *mission_list;
 546         int top_place;
 547     char        builtin_mission_filename[FILENAME_LEN];
 548         char    search_str[PATH_MAX] = MISSION_DIR;
 549
 550         //now search for levels on disk
 551
 552 //@@Took out this code because after this routine was called once for
 553 //@@a list of single-player missions, a subsequent call for a list of
 554 //@@anarchy missions would not scan again, and thus would not find the
 555 //@@anarchy-only missions.  If we retain the minimum level of install,
 556 //@@we may want to put the code back in, having it always scan for all
 557 //@@missions, and have the code that uses it sort out the ones it wants.
 558 //@@    if (num_missions != -1) {
 559 //@@            if (Current_mission_num != 0)
 560 //@@                    load_mission(0);                                //set built-in mission as default
 561 //@@            return num_missions;
 562 //@@    }
 563
 564         MALLOC(mission_list, mle, MAX_MISSIONS);
 565         num_missions = 0;
 566
 567         add_builtin_mission_to_list(mission_list + num_missions, builtin_mission_filename);  //read built-in first
 568         add_d1_builtin_mission_to_list(mission_list + num_missions);
 569         add_missions_to_list(mission_list, search_str, search_str + strlen(search_str), anarchy_mode);
 570
 571         // move original missions (in story-chronological order)
 572         // to top of mission list
 573         top_place = 0;
 574         promote(mission_list, "descent", &top_place); // original descent 1 mission
 575         promote(mission_list, builtin_mission_filename, &top_place); // d2 or d2demo
 576         promote(mission_list, "d2x", &top_place); // vertigo
 577
 578         if (num_missions > top_place)
 579                 qsort(&mission_list[top_place],
 580                       num_missions - top_place,
 581                       sizeof(*mission_list),
 582                                 (int (*)( const void *, const void * ))ml_sort_func);
 583
 584
 585         if (num_missions > top_place)
 586                 qsort(&mission_list[top_place],
 587                       num_missions - top_place,
 588                       sizeof(*mission_list),
 589                       (int (*)( const void *, const void * ))ml_sort_func);
 590
 591         //load_mission(0);   //set built-in mission as default
 592
 593     atexit(free_mission);
 594
 595         return mission_list;
 596 }
 597
 598 void free_mission_list(mle *mission_list)
 599 {
 600         int i;
 601
 602         for (i = 0; i < num_missions; i++)
 603                 d_free(mission_list[i].path);
 604
 605         d_free(mission_list);
 606         num_missions = 0;
 607 }
 608
 609 void init_extra_robot_movie(char *filename);
 610
 611 //values for built-in mission
 612
 613 //loads the specfied mission from the mission list.
 614 //build_mission_list() must have been called.
 615 //Returns true if mission loaded ok, else false.
 616 int load_mission(mle *mission)
 617 {
 618         CFILE *mfile;
 619         char buf[PATH_MAX], *v;
 620     int found_hogfile;
 621
 622     if (Current_mission)
 623         free_mission();
 624     Current_mission = d_malloc(sizeof(Mission));
 625     if (!Current_mission) return 0;
 626     *(mle *) Current_mission = *mission;
 627         Current_mission->filename = d_strdup(mission->filename); // don't want to lose it
 628
 629         songs_close();
 630
 631     // for Descent 1 missions, load descent.hog
 632     if (EMULATING_D1) {
 633         if (!cfile_init("descent.hog"))
 634             Warning("descent.hog not available, this mission may be missing some files required for briefings and exit sequence\n");
 635         if (!stricmp(Current_mission_filename, D1_MISSION_FILENAME))
 636             return load_mission_d1();
 637         } else
 638                 cfile_close("descent.hog");
 639
 640     if (PLAYING_BUILTIN_MISSION) {
 641                 switch (Current_mission->builtin_hogsize) {
 642                 case SHAREWARE_MISSION_HOGSIZE:
 643                 case MAC_SHARE_MISSION_HOGSIZE:
 644                         return load_mission_shareware();
 645                         break;
 646                 case OEM_MISSION_HOGSIZE:
 647                         return load_mission_oem();
 648                         break;
 649                 default:
 650                         Int3(); // fall through
 651                 case FULL_MISSION_HOGSIZE:
 652                 case FULL_10_MISSION_HOGSIZE:
 653                 case MAC_FULL_MISSION_HOGSIZE:
 654                         // continue on... (use d2.mn2 from hogfile)
 655                         break;
 656                 }
 657     }
 658
 659         mprintf(( 0, "Loading mission %s\n", Current_mission_filename ));
 660
 661         //read mission from file
 662
 663         switch (mission->location) {
 664         case ML_MISSIONDIR:
 665                 strcpy(buf,MISSION_DIR);
 666                 break;
 667         default:
 668                 Int3();                                                 //fall through
 669         case ML_CURDIR:
 670                 strcpy(buf,"");
 671                 break;
 672         }
 673         strcat(buf, mission->path);
 674         if (mission->descent_version == 2)
 675                 strcat(buf,".mn2");
 676         else
 677                 strcat(buf,".msn");
 678
 679         PHYSFSEXT_locateCorrectCase(buf);
 680
 681         mfile = cfopen(buf,"rb");
 682         if (mfile == NULL) {
 683         free_mission();
 684                 return 0;               //error!
 685         }
 686
 687     //for non-builtin missions, load HOG
 688     if (!PLAYING_BUILTIN_MISSION) {
 689
 690         strcpy(buf+strlen(buf)-4,".hog");               //change extension
 691
 692                 PHYSFSEXT_locateCorrectCase(buf);
 693
 694                 found_hogfile = cfile_init(buf);
 695
 696 #ifdef RELEASE                          //for release, require mission to be in hogfile
 697         if (! found_hogfile) {
 698             cfclose(mfile);
 699             free_mission();
 700             return 0;
 701         }
 702 #endif
 703     }
 704
 705     //init vars
 706         Last_level = 0;
 707         Last_secret_level = 0;
 708         Briefing_text_filename[0] = 0;
 709         Ending_text_filename[0] = 0;
 710
 711         while (cfgets(buf,80,mfile)) {
 712
 713                 if (istok(buf,"name")) {
 714                         Current_mission->enhanced = 0;
 715                         continue;                                               //already have name, go to next line
 716                 }
 717                 if (istok(buf,"xname")) {
 718                         Current_mission->enhanced = 1;
 719                         continue;                                               //already have name, go to next line
 720                 }
 721                 if (istok(buf,"zname")) {
 722                         Current_mission->enhanced = 2;
 723                         continue;                                               //already have name, go to next line
 724                 }
 725                 else if (istok(buf,"type"))
 726                         continue;                                               //already have name, go to next line
 727                 else if (istok(buf,"hog")) {
 728                         char    *bufp = buf;
 729
 730                         while (*(bufp++) != '=')
 731                                 ;
 732
 733                         if (*bufp == ' ')
 734                                 while (*(++bufp) == ' ')
 735                                         ;
 736
 737                         cfile_init(bufp);
 738                         mprintf((0, "Hog file override = [%s]\n", bufp));
 739                 }
 740                 else if (istok(buf,"briefing")) {
 741                         if ((v = get_value(buf)) != NULL) {
 742                                 add_term(v);
 743                                 if (strlen(v) < 13)
 744                                         strcpy(Briefing_text_filename,v);
 745                         }
 746                 }
 747                 else if (istok(buf,"ending")) {
 748                         if ((v = get_value(buf)) != NULL) {
 749                                 add_term(v);
 750                                 if (strlen(v) < 13)
 751                                         strcpy(Ending_text_filename,v);
 752                         }
 753                 }
 754                 else if (istok(buf,"num_levels")) {
 755
 756                         if ((v=get_value(buf))!=NULL) {
 757                                 int n_levels,i;
 758
 759                                 n_levels = atoi(v);
 760
 761                                 for (i=0;i<n_levels && cfgets(buf,80,mfile);i++) {
 762
 763                                         add_term(buf);
 764                                         if (strlen(buf) <= 12) {
 765                                                 strcpy(Level_names[i],buf);
 766                                                 Last_level++;
 767                                         }
 768                                         else
 769                                                 break;
 770                                 }
 771
 772                         }
 773                 }
 774                 else if (istok(buf,"num_secrets")) {
 775                         if ((v=get_value(buf))!=NULL) {
 776                                 int i;
 777
 778                                 N_secret_levels = atoi(v);
 779
 780                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 781
 782                                 for (i=0;i<N_secret_levels && cfgets(buf,80,mfile);i++) {
 783                                         char *t;
 784
 785
 786                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 787                                         else
 788                                                 break;
 789
 790                                         add_term(buf);
 791                                         if (strlen(buf) <= 12) {
 792                                                 strcpy(Secret_level_names[i],buf);
 793                                                 Secret_level_table[i] = atoi(t);
 794                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 795                                                         break;
 796                                                 Last_secret_level--;
 797                                         }
 798                                         else
 799                                                 break;
 800                                 }
 801
 802                         }
 803                 }
 804
 805         }
 806
 807         cfclose(mfile);
 808
 809         if (Last_level <= 0) {
 810                 free_mission();         //no valid mission loaded
 811                 return 0;
 812         }
 813
 814         if (Current_mission->enhanced) {
 815                 char t[50];
 816                 extern void bm_read_extra_robots();
 817                 sprintf(t,"%s.ham",Current_mission_filename);
 818                 bm_read_extra_robots(t, Current_mission->enhanced);
 819                 strncpy(t,Current_mission_filename,6);
 820                 init_extra_robot_movie(t);
 821         }
 822
 823         return 1;
 824 }
 825
 826 //loads the named mission if exists.
 827 //Returns true if mission loaded ok, else false.
 828 int load_mission_by_name(char *mission_name)
 829 {
 830         int i;
 831         mle *mission_list = build_mission_list(1);
 832         bool found = 0;
 833
 834         for (i = 0; i < num_missions; i++)
 835                 if (!stricmp(mission_name, mission_list[i].filename))
 836                         found = load_mission(mission_list + i);
 837
 838         free_mission_list(mission_list);
 839         return found;
 840 }
 841
 842 int select_mission(int anarchy_mode, char *message)
 843 {
 844     mle *mission_list = build_mission_list(anarchy_mode);
 845         int new_mission_num;
 846
 847     if (num_missions <= 1) {
 848         new_mission_num = load_mission(mission_list) ? 0 : -1;
 849     } else {
 850         int i, default_mission;
 851         char * m[MAX_MISSIONS];
 852
 853         default_mission = 0;
 854         for (i = 0; i < num_missions; i++) {
 855             m[i] = mission_list[i].mission_name;
 856             if ( !stricmp( m[i], config_last_mission.string ) )
 857                 default_mission = i;
 858         }
 859
 860         new_mission_num = newmenu_listbox1( message, num_missions, m, 1, default_mission, NULL );
 861
 862         if (new_mission_num >= 0) {
 863                         // Chose a mission
 864                         cvar_set_cvar( &config_last_mission, m[new_mission_num] );
 865
 866                         if (!load_mission(mission_list + new_mission_num)) {
 867                                 nm_messagebox( NULL, 1, TXT_OK, TXT_MISSION_ERROR);
 868                                 new_mission_num = -1;
 869                         }
 870                 }
 871     }
 872
 873         free_mission_list(mission_list);
 874     return (new_mission_num >= 0);
 875 }
 876
 877
 878 //set a new highest level for player for this mission
 879 int mission_write_config(void)
 880 {
 881         char filename[FILENAME_LEN+15];
 882         PHYSFS_file *file;
 883
 884         PHYSFS_mkdir(MISSION_DIR);
 885
 886         sprintf(filename, MISSION_DIR "%s.cfg", Current_mission_filename);
 887         file = PHYSFSX_openWriteBuffered(filename);
 888
 889         if (!file)
 890         {
 891                 nm_messagebox(NULL, 1, TXT_OK, "Cannot open mission config file");
 892                 return -1;
 893         }
 894
 895         PHYSFSX_printf(file, "%s=%d\n", Player_highest_level.name, Current_level_num);
 896
 897         PHYSFS_close(file);
 898
 899         return 0;
 900 }
 901
 902
 903 //gets the player's highest level from the file for this mission
 904 int mission_read_config(void)
 905 {
 906         cvar_setint(&Player_highest_level, 0);
 907
 908         cmd_appendf("exec " MISSION_DIR "%s.cfg", Current_mission_filename);
 909         cmd_queue_process();
 910
 911         return 0;
 912 }