main/mission.c

   1 /* $Id: mission.c,v 1.6 2002-08-07 07:34:09 btb Exp $ */
   2 /*
   3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   4 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   7 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   9 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
  10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  12 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  13 */
  14
  15 /*
  16  *
  17  * Stuff for loading missions
  18  *
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <conf.h>
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30 #include <limits.h>
  31
  32 #include "pstypes.h"
  33 #include "cfile.h"
  34
  35 #include "strutil.h"
  36 #include "inferno.h"
  37 #include "mission.h"
  38 #include "gameseq.h"
  39 #include "titles.h"
  40 #include "songs.h"
  41 #include "mono.h"
  42 #include "error.h"
  43 #include "findfile.h"
  44
  45 mle Mission_list[MAX_MISSIONS];
  46
  47 int Current_mission_num;
  48 int     N_secret_levels;                //      Made a global by MK for scoring purposes.  August 1, 1995.
  49 char *Current_mission_filename,*Current_mission_longname;
  50
  51 //this stuff should get defined elsewhere
  52
  53 char Level_names[MAX_LEVELS_PER_MISSION][FILENAME_LEN];
  54 char Secret_level_names[MAX_SECRET_LEVELS_PER_MISSION][FILENAME_LEN];
  55
  56 //where the missions go
  57 #ifndef EDITOR
  58 #define MISSION_DIR "missions/"
  59 #else
  60 #define MISSION_DIR "./"
  61 #endif
  62
  63 #ifdef SHAREWARE
  64
  65 //
  66 //  Special versions of mission routines for shareware
  67 //
  68
  69 #define SHAREWARE_MISSION_FILENAME      "d2demo"
  70 #define SHAREWARE_MISSION_NAME          "Descent 2 Demo"
  71
  72 int build_mission_list(int anarchy_mode)
  73 {
  74         anarchy_mode++;         //kill warning
  75
  76         strcpy(Mission_list[0].filename,SHAREWARE_MISSION_FILENAME);
  77         strcpy(Mission_list[0].mission_name,SHAREWARE_MISSION_NAME);
  78         Mission_list[0].anarchy_only_flag = 0;
  79
  80         return load_mission(0);
  81 }
  82
  83 int load_mission(int mission_num)
  84 {
  85         Assert(mission_num == 0);
  86
  87         Current_mission_num = 0;
  88         Current_mission_filename = Mission_list[0].filename;
  89         Current_mission_longname = Mission_list[0].mission_name;
  90
  91         N_secret_levels = 0;
  92
  93         Assert(Last_level == 3);
  94
  95 #ifdef MACINTOSH        // mac demo is using the regular hog and rl2 files
  96         strcpy(Level_names[0],"d2leva-1.rl2");
  97         strcpy(Level_names[1],"d2leva-2.rl2");
  98         strcpy(Level_names[2],"d2leva-3.rl2");
  99 #else
 100         strcpy(Level_names[0],"d2leva-1.sl2");
 101         strcpy(Level_names[1],"d2leva-2.sl2");
 102         strcpy(Level_names[2],"d2leva-3.sl2");
 103 #endif  // end of ifdef macintosh
 104
 105         return 1;
 106 }
 107
 108 int load_mission_by_name(char *mission_name)
 109 {
 110         if (strcmp(mission_name,SHAREWARE_MISSION_FILENAME))
 111                 return 0;               //cannot load requested mission
 112         else
 113                 return load_mission(0);
 114
 115 }
 116
 117
 118
 119 #else
 120
 121 #if defined(D2_OEM)
 122
 123 //
 124 //  Special versions of mission routines for Diamond/S3 version
 125 //
 126
 127 #define OEM_MISSION_FILENAME    "d2"
 128 #define OEM_MISSION_NAME                "D2 Destination:Quartzon"
 129
 130 int build_mission_list(int anarchy_mode)
 131 {
 132         anarchy_mode++;         //kill warning
 133
 134         strcpy(Mission_list[0].filename,OEM_MISSION_FILENAME);
 135         strcpy(Mission_list[0].mission_name,OEM_MISSION_NAME);
 136         Mission_list[0].anarchy_only_flag = 0;
 137
 138         return load_mission(0);
 139 }
 140
 141 int load_mission(int mission_num)
 142 {
 143         Assert(mission_num == 0);
 144
 145         Current_mission_num = 0;
 146         Current_mission_filename = Mission_list[0].filename;
 147         Current_mission_longname = Mission_list[0].mission_name;
 148
 149         N_secret_levels = 2;
 150
 151         Assert(Last_level == 8);
 152
 153         strcpy(Level_names[0],"d2leva-1.rl2");
 154         strcpy(Level_names[1],"d2leva-2.rl2");
 155         strcpy(Level_names[2],"d2leva-3.rl2");
 156         strcpy(Level_names[3],"d2leva-4.rl2");
 157
 158         strcpy(Secret_level_names[0],"d2leva-s.rl2");
 159
 160         strcpy(Level_names[4],"d2levb-1.rl2");
 161         strcpy(Level_names[5],"d2levb-2.rl2");
 162         strcpy(Level_names[6],"d2levb-3.rl2");
 163         strcpy(Level_names[7],"d2levb-4.rl2");
 164
 165         strcpy(Secret_level_names[1],"d2levb-s.rl2");
 166
 167         Secret_level_table[0] = 1;
 168         Secret_level_table[1] = 5;
 169
 170         return 1;
 171 }
 172
 173 int load_mission_by_name(char *mission_name)
 174 {
 175         if (strcmp(mission_name,OEM_MISSION_FILENAME))
 176                 return 0;               //cannot load requested mission
 177         else
 178                 return load_mission(0);
 179
 180 }
 181
 182 #else
 183
 184 //strips damn newline from end of line
 185 char *mfgets(char *s,int n,CFILE *f)
 186 {
 187         char *r;
 188
 189         r = cfgets(s,n,f);
 190         if (r && s[strlen(s)-1] == '\n')
 191                 s[strlen(s)-1] = 0;
 192
 193         return r;
 194 }
 195
 196 //compare a string for a token. returns true if match
 197 int istok(char *buf,char *tok)
 198 {
 199         return strnicmp(buf,tok,strlen(tok)) == 0;
 200
 201 }
 202
 203 //adds a terminating 0 after a string at the first white space
 204 void add_term(char *s)
 205 {
 206         while (*s && !isspace(*s)) s++;
 207
 208         *s = 0;         //terminate!
 209 }
 210
 211 //returns ptr to string after '=' & white space, or NULL if no '='
 212 //adds 0 after parm at first white space
 213 char *get_value(char *buf)
 214 {
 215         char *t;
 216
 217         t = strchr(buf,'=')+1;
 218
 219         if (t) {
 220                 while (*t && isspace(*t)) t++;
 221
 222                 if (*t)
 223                         return t;
 224         }
 225
 226         return NULL;            //error!
 227 }
 228
 229 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 230 char *get_parm_value(char *parm,CFILE *f)
 231 {
 232         static char buf[80];
 233
 234         if (!mfgets(buf,80,f))
 235                 return NULL;
 236
 237         if (istok(buf,parm))
 238                 return get_value(buf);
 239         else
 240                 return NULL;
 241 }
 242
 243 int ml_sort_func(mle *e0,mle *e1)
 244 {
 245         return stricmp(e0->mission_name,e1->mission_name);
 246
 247 }
 248
 249 extern char CDROM_dir[];
 250 extern int HoardEquipped();
 251
 252 #define BUILTIN_MISSION (cfexist("d2.mn2")?"d2.mn2":"d2demo.mn2")
 253
 254 //returns 1 if file read ok, else 0
 255 int read_mission_file(char *filename,int count,int location)
 256 {
 257         char filename2[100];
 258         CFILE *mfile;
 259
 260         switch (location) {
 261                 case ML_MISSIONDIR:
 262                         strcpy(filename2,MISSION_DIR);
 263                         break;
 264
 265                 case ML_CDROM:
 266                         songs_stop_redbook();           //so we can read from the CD
 267                         strcpy(filename2,CDROM_dir);
 268                         break;
 269
 270                 default:
 271                         Int3();         //fall through
 272
 273                 case ML_CURDIR:
 274                         strcpy(filename2,"");
 275                         break;
 276         }
 277         strcat(filename2,filename);
 278
 279         mfile = cfopen(filename2,"rb");
 280
 281         if (mfile) {
 282                 char *p;
 283                 char temp[FILENAME_LEN],*t;
 284
 285                 strcpy(temp,filename);
 286                 if ((t = strchr(temp,'.')) == NULL)
 287                         return 0;       //missing extension
 288                 // look if it's .mn2 or .msn
 289                 Mission_list[count].descent_version = (t[3] == '2') ? 2 : 1;
 290                 *t = 0;                 //kill extension
 291
 292                 strncpy( Mission_list[count].filename, temp, 9 );
 293                 Mission_list[count].anarchy_only_flag = 0;
 294                 Mission_list[count].location = location;
 295
 296                 p = get_parm_value("name",mfile);
 297
 298                 if (!p) {               //try enhanced mission
 299                         cfseek(mfile,0,SEEK_SET);
 300                         p = get_parm_value("xname",mfile);
 301                 }
 302
 303 #ifdef NETWORK
 304                 if (HoardEquipped())
 305                 {
 306                         if (!p) {               //try super-enhanced mission!
 307                                 cfseek(mfile,0,SEEK_SET);
 308                                 p = get_parm_value("zname",mfile);
 309                         }
 310                 }
 311 #endif
 312
 313                 if (p) {
 314                         char *t;
 315                         if ((t=strchr(p,';'))!=NULL)
 316                                 *t=0;
 317                         t = p + strlen(p)-1;
 318                         while (isspace(*t)) t--;
 319                         strncpy(Mission_list[count].mission_name,p,MISSION_NAME_LEN);
 320                 }
 321                 else {
 322                         cfclose(mfile);
 323                         return 0;
 324                 }
 325
 326                 p = get_parm_value("type",mfile);
 327
 328                 //get mission type
 329                 if (p)
 330                         Mission_list[count].anarchy_only_flag = istok(p,"anarchy");
 331
 332                 cfclose(mfile);
 333
 334                 return 1;
 335         }
 336
 337         return 0;
 338 }
 339
 340
 341 void add_missions_to_list(char * search_name, int * count, int anarchy_mode) {
 342         FILEFINDSTRUCT find;
 343         if( !FileFindFirst( search_name, &find ) ) {
 344                 do      {
 345                         if (read_mission_file( find.name, *count, ML_MISSIONDIR )) {
 346
 347                                 if (anarchy_mode || !Mission_list[*count].anarchy_only_flag)
 348                                         ++(*count);
 349                         }
 350
 351                 } while( !FileFindNext( &find ) && *count < MAX_MISSIONS);
 352                 FileFindClose();
 353                 if (*count >= MAX_MISSIONS)
 354                         mprintf((0, "Warning: more missions than d2x can handle\n"));
 355         }
 356 }
 357
 358
 359 //fills in the global list of missions.  Returns the number of missions
 360 //in the list.  If anarchy_mode set, don't include non-anarchy levels.
 361 //if there is only one mission, this function will call load_mission on it.
 362
 363 extern char CDROM_dir[];
 364 extern char AltHogDir[];
 365 extern char AltHogdir_initialized;
 366
 367 int build_mission_list(int anarchy_mode)
 368 {
 369         static int num_missions=-1;
 370         int count=0,special_count=0;
 371
 372         //now search for levels on disk
 373
 374 //@@Took out this code because after this routine was called once for
 375 //@@a list of single-player missions, a subsequent call for a list of
 376 //@@anarchy missions would not scan again, and thus would not find the
 377 //@@anarchy-only missions.  If we retain the minimum level of install,
 378 //@@we may want to put the code back in, having it always scan for all
 379 //@@missions, and have the code that uses it sort out the ones it wants.
 380 //@@    if (num_missions != -1) {
 381 //@@            if (Current_mission_num != 0)
 382 //@@                    load_mission(0);                                //set built-in mission as default
 383 //@@            return num_missions;
 384 //@@    }
 385
 386         if (!read_mission_file(BUILTIN_MISSION,0,ML_CURDIR))            //read built-in first
 387                 Error("Could not find required mission file <%s>",BUILTIN_MISSION);
 388
 389         special_count = count=1;
 390
 391         add_missions_to_list(MISSION_DIR "*.mn2", &count, anarchy_mode);
 392         add_missions_to_list(MISSION_DIR "*.msn", &count, anarchy_mode);
 393
 394         if (AltHogdir_initialized) {
 395                 char search_name[PATH_MAX + 5];
 396                 strcpy(search_name, AltHogDir);
 397                 strcat(search_name, "/" MISSION_DIR "*.mn2");
 398                 add_missions_to_list(search_name, &count, anarchy_mode);
 399                 strcpy(search_name, AltHogDir);
 400                 strcat(search_name, "/" MISSION_DIR "*.msn");
 401                 add_missions_to_list(search_name, &count, anarchy_mode);
 402         }
 403
 404         //move vertigo to top of mission list
 405         {
 406                 int i;
 407
 408                 for (i=special_count;i<count;i++)
 409                         if (!stricmp(Mission_list[i].filename,"D2X")) {         //swap!
 410                                 mle temp;
 411
 412                                 temp = Mission_list[special_count];
 413                                 Mission_list[special_count] = Mission_list[i];
 414                                 Mission_list[i] = temp;
 415
 416                                 special_count++;
 417
 418                                 break;
 419                         }
 420         }
 421
 422
 423         if (count>special_count)
 424                 qsort(&Mission_list[special_count],count-special_count,sizeof(*Mission_list),
 425                                 (int (*)( const void *, const void * ))ml_sort_func);
 426
 427         load_mission(0);                        //set built-in mission as default
 428
 429         num_missions = count;
 430
 431         return count;
 432 }
 433
 434 void init_extra_robot_movie(char *filename);
 435
 436 //values for built-in mission
 437
 438 //loads the specfied mission from the mission list.  build_mission_list()
 439 //must have been called.  If build_mission_list() returns 0, this function
 440 //does not need to be called.  Returns true if mission loaded ok, else false.
 441 int load_mission(int mission_num)
 442 {
 443         CFILE *mfile;
 444         char buf[80], *v;
 445         int found_hogfile;
 446         int enhanced_mission = 0;
 447
 448         Current_mission_num = mission_num;
 449
 450         mprintf(( 0, "Loading mission %d\n", mission_num ));
 451
 452         //read mission from file
 453
 454         switch (Mission_list[mission_num].location) {
 455         case ML_MISSIONDIR:
 456                 strcpy(buf,MISSION_DIR);
 457                 break;
 458         case ML_CDROM:
 459                 strcpy(buf,CDROM_dir);
 460                 break;
 461         default:
 462                 Int3();                                                 //fall through
 463         case ML_CURDIR:
 464                 strcpy(buf,"");
 465                 break;
 466         }
 467         strcat(buf,Mission_list[mission_num].filename);
 468         if (Mission_list[mission_num].descent_version == 2)
 469                 strcat(buf,".mn2");
 470         else
 471                 strcat(buf,".msn");
 472
 473         mfile = cfopen(buf,"rb");
 474         if (mfile == NULL) {
 475                 Current_mission_num = -1;
 476                 return 0;               //error!
 477         }
 478
 479         if (mission_num != 0) {         //for non-builtin missions, load HOG
 480
 481                 strcpy(buf+strlen(buf)-4,".hog");               //change extension
 482
 483                 found_hogfile = cfile_use_alternate_hogfile(buf);
 484
 485                 #ifdef RELEASE                          //for release, require mission to be in hogfile
 486                 if (! found_hogfile) {
 487                         cfclose(mfile);
 488                         Current_mission_num = -1;
 489                         return 0;
 490                 }
 491                 #endif
 492         }
 493
 494         //init vars
 495         Last_level =            0;
 496         Last_secret_level = 0;
 497
 498         while (mfgets(buf,80,mfile)) {
 499
 500                 if (istok(buf,"name"))
 501                         continue;                                               //already have name, go to next line
 502                 if (istok(buf,"xname")) {
 503                         enhanced_mission = 1;
 504                         continue;                                               //already have name, go to next line
 505                 }
 506                 if (istok(buf,"zname")) {
 507                         enhanced_mission = 2;
 508                         continue;                                               //already have name, go to next line
 509                 }
 510                 else if (istok(buf,"type"))
 511                         continue;                                               //already have name, go to next line
 512                 else if (istok(buf,"hog")) {
 513                         char    *bufp = buf;
 514
 515                         while (*(bufp++) != '=')
 516                                 ;
 517
 518                         if (*bufp == ' ')
 519                                 while (*(++bufp) == ' ')
 520                                         ;
 521
 522                         cfile_use_alternate_hogfile(bufp);
 523                         mprintf((0, "Hog file override = [%s]\n", bufp));
 524                 }
 525                 else if (istok(buf,"num_levels")) {
 526
 527                         if ((v=get_value(buf))!=NULL) {
 528                                 int n_levels,i;
 529
 530                                 n_levels = atoi(v);
 531
 532                                 for (i=0;i<n_levels && mfgets(buf,80,mfile);i++) {
 533
 534                                         add_term(buf);
 535                                         if (strlen(buf) <= 12) {
 536                                                 strcpy(Level_names[i],buf);
 537                                                 Last_level++;
 538                                         }
 539                                         else
 540                                                 break;
 541                                 }
 542
 543                         }
 544                 }
 545                 else if (istok(buf,"num_secrets")) {
 546                         if ((v=get_value(buf))!=NULL) {
 547                                 int i;
 548
 549                                 N_secret_levels = atoi(v);
 550
 551                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 552
 553                                 for (i=0;i<N_secret_levels && mfgets(buf,80,mfile);i++) {
 554                                         char *t;
 555
 556
 557                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 558                                         else
 559                                                 break;
 560
 561                                         add_term(buf);
 562                                         if (strlen(buf) <= 12) {
 563                                                 strcpy(Secret_level_names[i],buf);
 564                                                 Secret_level_table[i] = atoi(t);
 565                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 566                                                         break;
 567                                                 Last_secret_level--;
 568                                         }
 569                                         else
 570                                                 break;
 571                                 }
 572
 573                         }
 574                 }
 575
 576         }
 577
 578         cfclose(mfile);
 579
 580         if (Last_level <= 0) {
 581                 Current_mission_num = -1;               //no valid mission loaded
 582                 return 0;
 583         }
 584
 585         Current_mission_filename = Mission_list[Current_mission_num].filename;
 586         Current_mission_longname = Mission_list[Current_mission_num].mission_name;
 587
 588         if (enhanced_mission) {
 589                 char t[50];
 590                 extern void bm_read_extra_robots();
 591                 sprintf(t,"%s.ham",Current_mission_filename);
 592                 bm_read_extra_robots(t,enhanced_mission);
 593                 strncpy(t,Current_mission_filename,6);
 594                 strcat(t,"-l.mvl");
 595                 init_extra_robot_movie(t);
 596         }
 597
 598         return 1;
 599 }
 600
 601 //loads the named mission if exists.
 602 //Returns true if mission loaded ok, else false.
 603 int load_mission_by_name(char *mission_name)
 604 {
 605         int n,i;
 606
 607         n = build_mission_list(1);
 608
 609         for (i=0;i<n;i++)
 610                 if (!stricmp(mission_name,Mission_list[i].filename))
 611                         return load_mission(i);
 612
 613         return 0;               //couldn't find mission
 614 }
 615
 616 #endif
 617 #endif
 618