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_MISSION_HOGSIZE2:
 134         case D1_10_MISSION_HOGSIZE:
 135         case D1_MAC_MISSION_HOGSIZE:
 136                 N_secret_levels = 3;
 137
 138                 Last_level = BIM_LAST_LEVEL;
 139                 Last_secret_level = BIM_LAST_SECRET_LEVEL;
 140                 strcpy(Briefing_text_filename, BIM_BRIEFING_FILE);
 141                 strcpy(Ending_text_filename, BIM_ENDING_FILE);
 142
 143                 //build level names
 144                 for (i=0;i<Last_level;i++)
 145                         sprintf(Level_names[i], "level%02d.rdl", i+1);
 146                 for (i=0;i<-Last_secret_level;i++)
 147                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
 148
 149                 Secret_level_table[0] = 10;
 150                 Secret_level_table[1] = 21;
 151                 Secret_level_table[2] = 24;
 152
 153                 break;
 154         }
 155
 156         return 1;
 157 }
 158
 159
 160 //
 161 //  Special versions of mission routines for shareware
 162 //
 163
 164 int load_mission_shareware(void)
 165 {
 166     strcpy(Current_mission->mission_name, SHAREWARE_MISSION_NAME);
 167     Current_mission->descent_version = 2;
 168     Current_mission->anarchy_only_flag = 0;
 169
 170     switch (Current_mission->builtin_hogsize) {
 171         case MAC_SHARE_MISSION_HOGSIZE:
 172                 N_secret_levels = 1;
 173
 174                 Last_level = 4;
 175                 Last_secret_level = -1;
 176
 177                 // mac demo is using the regular hog and rl2 files
 178                 strcpy(Level_names[0],"d2leva-1.rl2");
 179                 strcpy(Level_names[1],"d2leva-2.rl2");
 180                 strcpy(Level_names[2],"d2leva-3.rl2");
 181                 strcpy(Level_names[3],"d2leva-4.rl2");
 182                 strcpy(Secret_level_names[0],"d2leva-s.rl2");
 183                 break;
 184         default:
 185                 Int3(); // fall through
 186         case SHAREWARE_MISSION_HOGSIZE:
 187                 N_secret_levels = 0;
 188
 189                 Last_level = 3;
 190                 Last_secret_level = 0;
 191
 192                 strcpy(Level_names[0],"d2leva-1.sl2");
 193                 strcpy(Level_names[1],"d2leva-2.sl2");
 194                 strcpy(Level_names[2],"d2leva-3.sl2");
 195         }
 196
 197         return 1;
 198 }
 199
 200
 201 //
 202 //  Special versions of mission routines for Diamond/S3 version
 203 //
 204
 205 int load_mission_oem(void)
 206 {
 207     strcpy(Current_mission->mission_name, OEM_MISSION_NAME);
 208     Current_mission->descent_version = 2;
 209     Current_mission->anarchy_only_flag = 0;
 210
 211         N_secret_levels = 2;
 212
 213         Last_level = 8;
 214         Last_secret_level = -2;
 215
 216         strcpy(Level_names[0],"d2leva-1.rl2");
 217         strcpy(Level_names[1],"d2leva-2.rl2");
 218         strcpy(Level_names[2],"d2leva-3.rl2");
 219         strcpy(Level_names[3],"d2leva-4.rl2");
 220
 221         strcpy(Secret_level_names[0],"d2leva-s.rl2");
 222
 223         strcpy(Level_names[4],"d2levb-1.rl2");
 224         strcpy(Level_names[5],"d2levb-2.rl2");
 225         strcpy(Level_names[6],"d2levb-3.rl2");
 226         strcpy(Level_names[7],"d2levb-4.rl2");
 227
 228         strcpy(Secret_level_names[1],"d2levb-s.rl2");
 229
 230         Secret_level_table[0] = 1;
 231         Secret_level_table[1] = 5;
 232
 233         return 1;
 234 }
 235
 236
 237 //compare a string for a token. returns true if match
 238 int istok(char *buf,char *tok)
 239 {
 240         return strnicmp(buf,tok,strlen(tok)) == 0;
 241
 242 }
 243
 244 //adds a terminating 0 after a string at the first white space
 245 void add_term(char *s)
 246 {
 247         while (*s && !isspace(*s)) s++;
 248
 249         *s = 0;         //terminate!
 250 }
 251
 252 //returns ptr to string after '=' & white space, or NULL if no '='
 253 //adds 0 after parm at first white space
 254 char *get_value(char *buf)
 255 {
 256         char *t;
 257
 258         t = strchr(buf,'=')+1;
 259
 260         if (t) {
 261                 while (*t && isspace(*t)) t++;
 262
 263                 if (*t)
 264                         return t;
 265         }
 266
 267         return NULL;            //error!
 268 }
 269
 270 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 271 char *get_parm_value(char *parm,CFILE *f)
 272 {
 273         static char buf[80];
 274
 275         if (!cfgets(buf,80,f))
 276                 return NULL;
 277
 278         if (istok(buf,parm))
 279                 return get_value(buf);
 280         else
 281                 return NULL;
 282 }
 283
 284 int ml_sort_func(mle *e0,mle *e1)
 285 {
 286         return stricmp(e0->mission_name,e1->mission_name);
 287
 288 }
 289
 290
 291 //returns 1 if file read ok, else 0
 292 int read_mission_file(mle *mission, char *filename, int location)
 293 {
 294         char filename2[100];
 295         CFILE *mfile;
 296
 297         //printf("reading: %s\n", filename);
 298
 299         switch (location) {
 300                 case ML_MISSIONDIR:
 301                         strcpy(filename2,MISSION_DIR);
 302                         break;
 303
 304                 default:
 305                         Int3();         //fall through
 306
 307                 case ML_CURDIR:
 308                         strcpy(filename2,"");
 309                         break;
 310         }
 311         strcat(filename2,filename);
 312
 313         mfile = cfopen(filename2,"rb");
 314
 315         if (mfile) {
 316                 char *p;
 317                 char temp[PATH_MAX], *ext;
 318
 319                 strcpy(temp,filename);
 320                 p = strrchr(temp, '/'); // get the filename at the end of the path
 321                 if (!p)
 322                         p = temp;
 323                 else p++;
 324
 325                 if ((ext = strchr(p, '.')) == NULL)
 326                         return 0;       //missing extension
 327                 // look if it's .mn2 or .msn
 328                 mission->descent_version = (ext[3] == '2') ? 2 : 1;
 329                 *ext = 0;                       //kill extension
 330
 331                 mission->path = d_strdup(temp);
 332                 mission->anarchy_only_flag = 0;
 333                 mission->filename = mission->path + (p - temp);
 334                 mission->location = location;
 335
 336                 p = get_parm_value("name",mfile);
 337
 338                 if (!p) {               //try enhanced mission
 339                         cfseek(mfile,0,SEEK_SET);
 340                         p = get_parm_value("xname",mfile);
 341                 }
 342
 343                 if (!p) {       //try super-enhanced mission!
 344                         cfseek(mfile,0,SEEK_SET);
 345                         p = get_parm_value("zname",mfile);
 346                 }
 347
 348                 if (p) {
 349                         char *t;
 350                         if ((t=strchr(p,';'))!=NULL)
 351                                 *t=0;
 352                         t = p + strlen(p)-1;
 353                         while (isspace(*t))
 354                                 *t-- = 0; // remove trailing whitespace
 355                         if (strlen(p) > MISSION_NAME_LEN)
 356                                 p[MISSION_NAME_LEN] = 0;
 357                         strncpy(mission->mission_name, p, MISSION_NAME_LEN + 1);
 358                 }
 359                 else {
 360                         cfclose(mfile);
 361                         d_free(mission->path);
 362                         return 0;
 363                 }
 364
 365                 p = get_parm_value("type",mfile);
 366
 367                 //get mission type
 368                 if (p)
 369                         mission->anarchy_only_flag = istok(p,"anarchy");
 370
 371                 cfclose(mfile);
 372
 373                 return 1;
 374         }
 375
 376         return 0;
 377 }
 378
 379 void add_d1_builtin_mission_to_list(mle *mission)
 380 {
 381     int size;
 382
 383         if (!cfexist("descent.hog"))
 384                 return;
 385
 386         size = cfile_size("descent.hog");
 387
 388         switch (size) {
 389         case D1_SHAREWARE_MISSION_HOGSIZE:
 390         case D1_SHAREWARE_10_MISSION_HOGSIZE:
 391         case D1_MAC_SHARE_MISSION_HOGSIZE:
 392                 mission->filename = d_strdup(D1_MISSION_FILENAME);
 393                 strcpy(mission->mission_name, D1_SHAREWARE_MISSION_NAME);
 394                 mission->anarchy_only_flag = 0;
 395                 break;
 396         case D1_OEM_MISSION_HOGSIZE:
 397         case D1_OEM_10_MISSION_HOGSIZE:
 398                 mission->filename = d_strdup(D1_MISSION_FILENAME);
 399                 strcpy(mission->mission_name, D1_OEM_MISSION_NAME);
 400                 mission->anarchy_only_flag = 0;
 401                 break;
 402         default:
 403                 Warning("Unknown D1 hogsize %d\n", size);
 404                 Int3();
 405                 // fall through
 406         case D1_MISSION_HOGSIZE:
 407         case D1_MISSION_HOGSIZE2:
 408         case D1_10_MISSION_HOGSIZE:
 409         case D1_MAC_MISSION_HOGSIZE:
 410                 mission->filename = d_strdup(D1_MISSION_FILENAME);
 411                 strcpy(mission->mission_name, D1_MISSION_NAME);
 412                 mission->anarchy_only_flag = 0;
 413                 break;
 414         }
 415
 416         mission->descent_version = 1;
 417         mission->anarchy_only_flag = 0;
 418         mission->builtin_hogsize = 0;
 419         mission->path = mission->filename;
 420         num_missions++;
 421 }
 422
 423
 424 void add_builtin_mission_to_list(mle *mission, char *name)
 425 {
 426     int size = cfile_size("descent2.hog");
 427
 428         if (size == -1)
 429                 size = cfile_size("d2demo.hog");
 430
 431         switch (size) {
 432         case SHAREWARE_MISSION_HOGSIZE:
 433         case MAC_SHARE_MISSION_HOGSIZE:
 434                 mission->filename = d_strdup(SHAREWARE_MISSION_FILENAME);
 435                 strcpy(mission->mission_name,SHAREWARE_MISSION_NAME);
 436                 mission->anarchy_only_flag = 0;
 437                 break;
 438         case OEM_MISSION_HOGSIZE:
 439                 mission->filename = d_strdup(OEM_MISSION_FILENAME);
 440                 strcpy(mission->mission_name,OEM_MISSION_NAME);
 441                 mission->anarchy_only_flag = 0;
 442                 break;
 443         default:
 444                 Warning("Unknown hogsize %d, trying %s\n", size, FULL_MISSION_FILENAME ".mn2");
 445                 Int3(); //fall through
 446         case FULL_MISSION_HOGSIZE:
 447         case FULL_10_MISSION_HOGSIZE:
 448         case MAC_FULL_MISSION_HOGSIZE:
 449                 if (!read_mission_file(mission, FULL_MISSION_FILENAME ".mn2", ML_CURDIR))
 450                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
 451         }
 452
 453         mission->path = mission->filename;
 454         strcpy(name, mission->filename);
 455     mission->builtin_hogsize = size;
 456         mission->descent_version = 2;
 457         mission->anarchy_only_flag = 0;
 458         num_missions++;
 459 }
 460
 461
 462 void add_missions_to_list(mle *mission_list, char *path, char *rel_path, int anarchy_mode)
 463 {
 464         char **find, **i, *ext;
 465
 466         find = PHYSFS_enumerateFiles(path);
 467
 468         for (i = find; *i != NULL; i++)
 469         {
 470                 if (strlen(path) + strlen(*i) + 1 >= PATH_MAX)
 471                         continue;       // path is too long
 472
 473                 strcat(rel_path, *i);
 474                 if (PHYSFS_isDirectory(path))
 475                 {
 476                         strcat(rel_path, "/");
 477                         add_missions_to_list(mission_list, path, rel_path, anarchy_mode);
 478                         *(strrchr(path, '/')) = 0;
 479                 }
 480                 else if ((ext = strrchr(*i, '.')) && (!strnicmp(ext, ".msn", 4) || !strnicmp(ext, ".mn2", 4)))
 481                         if (read_mission_file(&mission_list[num_missions], rel_path, ML_MISSIONDIR))
 482                         {
 483                                 if (anarchy_mode || !mission_list[num_missions].anarchy_only_flag)
 484                                 {
 485                                         mission_list[num_missions].builtin_hogsize = 0;
 486                                         num_missions++;
 487                                 }
 488                                 else
 489                                         d_free(mission_list[num_missions].path);
 490                         }
 491
 492                 if (num_missions >= MAX_MISSIONS)
 493                 {
 494                         mprintf((0, "Warning: more missions than d2x can handle\n"));
 495                         break;
 496                 }
 497
 498                 (strrchr(path, '/'))[1] = 0;    // chop off the entry
 499         }
 500
 501         PHYSFS_freeList(find);
 502 }
 503
 504 /* move <mission_name> to <place> on mission list, increment <place> */
 505 void promote (mle *mission_list, char * mission_name, int * top_place)
 506 {
 507         int i;
 508         char name[FILENAME_LEN], * t;
 509         strcpy(name, mission_name);
 510         if ((t = strchr(name,'.')) != NULL)
 511                 *t = 0; //kill extension
 512         //printf("promoting: %s\n", name);
 513         for (i = *top_place; i < num_missions; i++)
 514                 if (!stricmp(mission_list[i].filename, name)) {
 515                         //swap mission positions
 516                         mle temp;
 517
 518                         temp = mission_list[*top_place];
 519                         mission_list[*top_place] = mission_list[i];
 520                         mission_list[i] = temp;
 521                         ++(*top_place);
 522                         break;
 523                 }
 524 }
 525
 526 void free_mission(void)
 527 {
 528     // May become more complex with the editor
 529     if (Current_mission) {
 530                 d_free(Current_mission->filename);
 531         d_free(Current_mission);
 532     }
 533 }
 534
 535
 536
 537 //fills in the global list of missions.  Returns the number of missions
 538 //in the list.  If anarchy_mode is set, then also add anarchy-only missions.
 539
 540 #if 0
 541 extern char AltHogDir[];
 542 extern char AltHogdir_initialized;
 543 #endif
 544
 545 mle *build_mission_list(int anarchy_mode)
 546 {
 547         mle *mission_list;
 548         int top_place;
 549     char        builtin_mission_filename[FILENAME_LEN];
 550         char    search_str[PATH_MAX] = MISSION_DIR;
 551
 552         //now search for levels on disk
 553
 554 //@@Took out this code because after this routine was called once for
 555 //@@a list of single-player missions, a subsequent call for a list of
 556 //@@anarchy missions would not scan again, and thus would not find the
 557 //@@anarchy-only missions.  If we retain the minimum level of install,
 558 //@@we may want to put the code back in, having it always scan for all
 559 //@@missions, and have the code that uses it sort out the ones it wants.
 560 //@@    if (num_missions != -1) {
 561 //@@            if (Current_mission_num != 0)
 562 //@@                    load_mission(0);                                //set built-in mission as default
 563 //@@            return num_missions;
 564 //@@    }
 565
 566         MALLOC(mission_list, mle, MAX_MISSIONS);
 567         num_missions = 0;
 568
 569         add_builtin_mission_to_list(mission_list + num_missions, builtin_mission_filename);  //read built-in first
 570         add_d1_builtin_mission_to_list(mission_list + num_missions);
 571         add_missions_to_list(mission_list, search_str, search_str + strlen(search_str), anarchy_mode);
 572
 573         // move original missions (in story-chronological order)
 574         // to top of mission list
 575         top_place = 0;
 576         promote(mission_list, "descent", &top_place); // original descent 1 mission
 577         promote(mission_list, builtin_mission_filename, &top_place); // d2 or d2demo
 578         promote(mission_list, "d2x", &top_place); // vertigo
 579
 580         if (num_missions > top_place)
 581                 qsort(&mission_list[top_place],
 582                       num_missions - top_place,
 583                       sizeof(*mission_list),
 584                                 (int (*)( const void *, const void * ))ml_sort_func);
 585
 586
 587         if (num_missions > top_place)
 588                 qsort(&mission_list[top_place],
 589                       num_missions - top_place,
 590                       sizeof(*mission_list),
 591                       (int (*)( const void *, const void * ))ml_sort_func);
 592
 593         //load_mission(0);   //set built-in mission as default
 594
 595     atexit(free_mission);
 596
 597         return mission_list;
 598 }
 599
 600 void free_mission_list(mle *mission_list)
 601 {
 602         int i;
 603
 604         for (i = 0; i < num_missions; i++)
 605                 d_free(mission_list[i].path);
 606
 607         d_free(mission_list);
 608         num_missions = 0;
 609 }
 610
 611 void init_extra_robot_movie(char *filename);
 612
 613 //values for built-in mission
 614
 615 //loads the specfied mission from the mission list.
 616 //build_mission_list() must have been called.
 617 //Returns true if mission loaded ok, else false.
 618 int load_mission(mle *mission)
 619 {
 620         CFILE *mfile;
 621         char buf[PATH_MAX], *v;
 622     int found_hogfile;
 623
 624     if (Current_mission)
 625         free_mission();
 626     Current_mission = d_malloc(sizeof(Mission));
 627     if (!Current_mission) return 0;
 628     *(mle *) Current_mission = *mission;
 629         Current_mission->filename = d_strdup(mission->filename); // don't want to lose it
 630
 631         songs_close();
 632
 633     // for Descent 1 missions, load descent.hog
 634     if (EMULATING_D1) {
 635         if (!cfile_init("descent.hog"))
 636             Warning("descent.hog not available, this mission may be missing some files required for briefings and exit sequence\n");
 637         if (!stricmp(Current_mission_filename, D1_MISSION_FILENAME))
 638             return load_mission_d1();
 639         } else
 640                 cfile_close("descent.hog");
 641
 642     if (PLAYING_BUILTIN_MISSION) {
 643                 switch (Current_mission->builtin_hogsize) {
 644                 case SHAREWARE_MISSION_HOGSIZE:
 645                 case MAC_SHARE_MISSION_HOGSIZE:
 646                         return load_mission_shareware();
 647                         break;
 648                 case OEM_MISSION_HOGSIZE:
 649                         return load_mission_oem();
 650                         break;
 651                 default:
 652                         Int3(); // fall through
 653                 case FULL_MISSION_HOGSIZE:
 654                 case FULL_10_MISSION_HOGSIZE:
 655                 case MAC_FULL_MISSION_HOGSIZE:
 656                         // continue on... (use d2.mn2 from hogfile)
 657                         break;
 658                 }
 659     }
 660
 661         mprintf(( 0, "Loading mission %s\n", Current_mission_filename ));
 662
 663         //read mission from file
 664
 665         switch (mission->location) {
 666         case ML_MISSIONDIR:
 667                 strcpy(buf,MISSION_DIR);
 668                 break;
 669         default:
 670                 Int3();                                                 //fall through
 671         case ML_CURDIR:
 672                 strcpy(buf,"");
 673                 break;
 674         }
 675         strcat(buf, mission->path);
 676         if (mission->descent_version == 2)
 677                 strcat(buf,".mn2");
 678         else
 679                 strcat(buf,".msn");
 680
 681         PHYSFSEXT_locateCorrectCase(buf);
 682
 683         mfile = cfopen(buf,"rb");
 684         if (mfile == NULL) {
 685         free_mission();
 686                 return 0;               //error!
 687         }
 688
 689     //for non-builtin missions, load HOG
 690     if (!PLAYING_BUILTIN_MISSION) {
 691
 692         strcpy(buf+strlen(buf)-4,".hog");               //change extension
 693
 694                 PHYSFSEXT_locateCorrectCase(buf);
 695
 696                 found_hogfile = cfile_init(buf);
 697
 698 #ifdef RELEASE                          //for release, require mission to be in hogfile
 699         if (! found_hogfile) {
 700             cfclose(mfile);
 701             free_mission();
 702             return 0;
 703         }
 704 #endif
 705     }
 706
 707     //init vars
 708         Last_level = 0;
 709         Last_secret_level = 0;
 710         Briefing_text_filename[0] = 0;
 711         Ending_text_filename[0] = 0;
 712
 713         while (cfgets(buf,80,mfile)) {
 714
 715                 if (istok(buf,"name")) {
 716                         Current_mission->enhanced = 0;
 717                         continue;                                               //already have name, go to next line
 718                 }
 719                 if (istok(buf,"xname")) {
 720                         Current_mission->enhanced = 1;
 721                         continue;                                               //already have name, go to next line
 722                 }
 723                 if (istok(buf,"zname")) {
 724                         Current_mission->enhanced = 2;
 725                         continue;                                               //already have name, go to next line
 726                 }
 727                 else if (istok(buf,"type"))
 728                         continue;                                               //already have name, go to next line
 729                 else if (istok(buf,"hog")) {
 730                         char    *bufp = buf;
 731
 732                         while (*(bufp++) != '=')
 733                                 ;
 734
 735                         if (*bufp == ' ')
 736                                 while (*(++bufp) == ' ')
 737                                         ;
 738
 739                         cfile_init(bufp);
 740                         mprintf((0, "Hog file override = [%s]\n", bufp));
 741                 }
 742                 else if (istok(buf,"briefing")) {
 743                         if ((v = get_value(buf)) != NULL) {
 744                                 add_term(v);
 745                                 if (strlen(v) < 13)
 746                                         strcpy(Briefing_text_filename,v);
 747                         }
 748                 }
 749                 else if (istok(buf,"ending")) {
 750                         if ((v = get_value(buf)) != NULL) {
 751                                 add_term(v);
 752                                 if (strlen(v) < 13)
 753                                         strcpy(Ending_text_filename,v);
 754                         }
 755                 }
 756                 else if (istok(buf,"num_levels")) {
 757
 758                         if ((v=get_value(buf))!=NULL) {
 759                                 int n_levels,i;
 760
 761                                 n_levels = atoi(v);
 762
 763                                 for (i=0;i<n_levels && cfgets(buf,80,mfile);i++) {
 764
 765                                         add_term(buf);
 766                                         if (strlen(buf) <= 12) {
 767                                                 strcpy(Level_names[i],buf);
 768                                                 Last_level++;
 769                                         }
 770                                         else
 771                                                 break;
 772                                 }
 773
 774                         }
 775                 }
 776                 else if (istok(buf,"num_secrets")) {
 777                         if ((v=get_value(buf))!=NULL) {
 778                                 int i;
 779
 780                                 N_secret_levels = atoi(v);
 781
 782                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 783
 784                                 for (i=0;i<N_secret_levels && cfgets(buf,80,mfile);i++) {
 785                                         char *t;
 786
 787
 788                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 789                                         else
 790                                                 break;
 791
 792                                         add_term(buf);
 793                                         if (strlen(buf) <= 12) {
 794                                                 strcpy(Secret_level_names[i],buf);
 795                                                 Secret_level_table[i] = atoi(t);
 796                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 797                                                         break;
 798                                                 Last_secret_level--;
 799                                         }
 800                                         else
 801                                                 break;
 802                                 }
 803
 804                         }
 805                 }
 806
 807         }
 808
 809         cfclose(mfile);
 810
 811         if (Last_level <= 0) {
 812                 free_mission();         //no valid mission loaded
 813                 return 0;
 814         }
 815
 816         if (Current_mission->enhanced) {
 817                 char t[50];
 818                 extern void bm_read_extra_robots();
 819                 sprintf(t,"%s.ham",Current_mission_filename);
 820                 bm_read_extra_robots(t, Current_mission->enhanced);
 821                 strncpy(t,Current_mission_filename,6);
 822                 init_extra_robot_movie(t);
 823         }
 824
 825         return 1;
 826 }
 827
 828 //loads the named mission if exists.
 829 //Returns true if mission loaded ok, else false.
 830 int load_mission_by_name(char *mission_name)
 831 {
 832         int i;
 833         mle *mission_list = build_mission_list(1);
 834         bool found = 0;
 835
 836         for (i = 0; i < num_missions; i++)
 837                 if (!stricmp(mission_name, mission_list[i].filename))
 838                         found = load_mission(mission_list + i);
 839
 840         free_mission_list(mission_list);
 841         return found;
 842 }
 843
 844 int select_mission(int anarchy_mode, char *message)
 845 {
 846     mle *mission_list = build_mission_list(anarchy_mode);
 847         int new_mission_num;
 848
 849     if (num_missions <= 1) {
 850         new_mission_num = load_mission(mission_list) ? 0 : -1;
 851     } else {
 852         int i, default_mission;
 853         char * m[MAX_MISSIONS];
 854
 855         default_mission = 0;
 856         for (i = 0; i < num_missions; i++) {
 857             m[i] = mission_list[i].mission_name;
 858             if ( !stricmp( m[i], config_last_mission.string ) )
 859                 default_mission = i;
 860         }
 861
 862         new_mission_num = newmenu_listbox1( message, num_missions, m, 1, default_mission, NULL );
 863
 864         if (new_mission_num >= 0) {
 865                         // Chose a mission
 866                         cvar_set_cvar( &config_last_mission, m[new_mission_num] );
 867
 868                         if (!load_mission(mission_list + new_mission_num)) {
 869                                 nm_messagebox( NULL, 1, TXT_OK, TXT_MISSION_ERROR);
 870                                 new_mission_num = -1;
 871                         }
 872                 }
 873     }
 874
 875         free_mission_list(mission_list);
 876     return (new_mission_num >= 0);
 877 }
 878
 879
 880 #ifdef EDITOR
 881 void create_new_mission(void)
 882 {
 883         if (Current_mission)
 884                 free_mission();
 885         Current_mission = d_malloc(sizeof(Mission));
 886         Current_mission->filename = d_strdup("new_mission");
 887         strcpy(Level_names[0], "GAMESAVE.LVL");
 888 }
 889 #endif
 890
 891
 892 //set a new highest level for player for this mission
 893 int mission_write_config(void)
 894 {
 895         char filename[FILENAME_LEN+15];
 896         PHYSFS_file *file;
 897
 898         PHYSFS_mkdir(MISSION_DIR);
 899
 900         sprintf(filename, MISSION_DIR "%s.cfg", Current_mission_filename);
 901         file = PHYSFSX_openWriteBuffered(filename);
 902
 903         if (!file)
 904         {
 905                 nm_messagebox(NULL, 1, TXT_OK, "Cannot open mission config file");
 906                 return -1;
 907         }
 908
 909         PHYSFSX_printf(file, "%s=%d\n", Player_highest_level.name, Current_level_num);
 910
 911         PHYSFS_close(file);
 912
 913         return 0;
 914 }
 915
 916
 917 //gets the player's highest level from the file for this mission
 918 int mission_read_config(void)
 919 {
 920         cvar_setint(&Player_highest_level, 0);
 921
 922         cmd_appendf("exec " MISSION_DIR "%s.cfg", Current_mission_filename);
 923         cmd_queue_process();
 924
 925         return 0;
 926 }