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  * $Source: /cvs/cvsroot/d2x/main/mission.c,v $
  16  * $Revision: 1.4 $
  17  * $Author: bradleyb $
  18  * $Date: 2002-01-29 10:14:25 $
  19  *
  20  * Stuff for loading missions
  21  *
  22  * $Log: not supported by cvs2svn $
  23  *
  24  */
  25
  26 #ifdef HAVE_CONFIG_H
  27 #include <conf.h>
  28 #endif
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <ctype.h>
  34 #include <limits.h>
  35
  36 #include "pstypes.h"
  37 #include "cfile.h"
  38
  39 #include "strutil.h"
  40 #include "inferno.h"
  41 #include "mission.h"
  42 #include "gameseq.h"
  43 #include "titles.h"
  44 #include "songs.h"
  45 #include "mono.h"
  46 #include "error.h"
  47 #include "findfile.h"
  48
  49 mle Mission_list[MAX_MISSIONS];
  50
  51 int Current_mission_num;
  52 int     N_secret_levels;                //      Made a global by MK for scoring purposes.  August 1, 1995.
  53 char *Current_mission_filename,*Current_mission_longname;
  54
  55 //this stuff should get defined elsewhere
  56
  57 char Level_names[MAX_LEVELS_PER_MISSION][FILENAME_LEN];
  58 char Secret_level_names[MAX_SECRET_LEVELS_PER_MISSION][FILENAME_LEN];
  59
  60 //where the missions go
  61 #ifndef EDITOR
  62 #define MISSION_DIR "missions/"
  63 #else
  64 #define MISSION_DIR "./"
  65 #endif
  66
  67 #ifdef SHAREWARE
  68
  69 //
  70 //  Special versions of mission routines for shareware
  71 //
  72
  73 #define SHAREWARE_MISSION_FILENAME      "d2demo"
  74 #define SHAREWARE_MISSION_NAME          "Descent 2 Demo"
  75
  76 int build_mission_list(int anarchy_mode)
  77 {
  78         anarchy_mode++;         //kill warning
  79
  80         strcpy(Mission_list[0].filename,SHAREWARE_MISSION_FILENAME);
  81         strcpy(Mission_list[0].mission_name,SHAREWARE_MISSION_NAME);
  82         Mission_list[0].anarchy_only_flag = 0;
  83
  84         return load_mission(0);
  85 }
  86
  87 int load_mission(int mission_num)
  88 {
  89         Assert(mission_num == 0);
  90
  91         Current_mission_num = 0;
  92         Current_mission_filename = Mission_list[0].filename;
  93         Current_mission_longname = Mission_list[0].mission_name;
  94
  95         N_secret_levels = 0;
  96
  97         Assert(Last_level == 3);
  98
  99 #ifdef MACINTOSH        // mac demo is using the regular hog and rl2 files
 100         strcpy(Level_names[0],"d2leva-1.rl2");
 101         strcpy(Level_names[1],"d2leva-2.rl2");
 102         strcpy(Level_names[2],"d2leva-3.rl2");
 103 #else
 104         strcpy(Level_names[0],"d2leva-1.sl2");
 105         strcpy(Level_names[1],"d2leva-2.sl2");
 106         strcpy(Level_names[2],"d2leva-3.sl2");
 107 #endif  // end of ifdef macintosh
 108
 109         return 1;
 110 }
 111
 112 int load_mission_by_name(char *mission_name)
 113 {
 114         if (strcmp(mission_name,SHAREWARE_MISSION_FILENAME))
 115                 return 0;               //cannot load requested mission
 116         else
 117                 return load_mission(0);
 118
 119 }
 120
 121
 122
 123 #else
 124
 125 #if defined(D2_OEM)
 126
 127 //
 128 //  Special versions of mission routines for Diamond/S3 version
 129 //
 130
 131 #define OEM_MISSION_FILENAME    "d2"
 132 #define OEM_MISSION_NAME                "D2 Destination:Quartzon"
 133
 134 int build_mission_list(int anarchy_mode)
 135 {
 136         anarchy_mode++;         //kill warning
 137
 138         strcpy(Mission_list[0].filename,OEM_MISSION_FILENAME);
 139         strcpy(Mission_list[0].mission_name,OEM_MISSION_NAME);
 140         Mission_list[0].anarchy_only_flag = 0;
 141
 142         return load_mission(0);
 143 }
 144
 145 int load_mission(int mission_num)
 146 {
 147         Assert(mission_num == 0);
 148
 149         Current_mission_num = 0;
 150         Current_mission_filename = Mission_list[0].filename;
 151         Current_mission_longname = Mission_list[0].mission_name;
 152
 153         N_secret_levels = 2;
 154
 155         Assert(Last_level == 8);
 156
 157         strcpy(Level_names[0],"d2leva-1.rl2");
 158         strcpy(Level_names[1],"d2leva-2.rl2");
 159         strcpy(Level_names[2],"d2leva-3.rl2");
 160         strcpy(Level_names[3],"d2leva-4.rl2");
 161
 162         strcpy(Secret_level_names[0],"d2leva-s.rl2");
 163
 164         strcpy(Level_names[4],"d2levb-1.rl2");
 165         strcpy(Level_names[5],"d2levb-2.rl2");
 166         strcpy(Level_names[6],"d2levb-3.rl2");
 167         strcpy(Level_names[7],"d2levb-4.rl2");
 168
 169         strcpy(Secret_level_names[1],"d2levb-s.rl2");
 170
 171         Secret_level_table[0] = 1;
 172         Secret_level_table[1] = 5;
 173
 174         return 1;
 175 }
 176
 177 int load_mission_by_name(char *mission_name)
 178 {
 179         if (strcmp(mission_name,OEM_MISSION_FILENAME))
 180                 return 0;               //cannot load requested mission
 181         else
 182                 return load_mission(0);
 183
 184 }
 185
 186 #else
 187
 188 //strips damn newline from end of line
 189 char *mfgets(char *s,int n,CFILE *f)
 190 {
 191         char *r;
 192
 193         r = cfgets(s,n,f);
 194         if (r && s[strlen(s)-1] == '\n')
 195                 s[strlen(s)-1] = 0;
 196
 197         return r;
 198 }
 199
 200 //compare a string for a token. returns true if match
 201 int istok(char *buf,char *tok)
 202 {
 203         return strnicmp(buf,tok,strlen(tok)) == 0;
 204
 205 }
 206
 207 //adds a terminating 0 after a string at the first white space
 208 void add_term(char *s)
 209 {
 210         while (*s && !isspace(*s)) s++;
 211
 212         *s = 0;         //terminate!
 213 }
 214
 215 //returns ptr to string after '=' & white space, or NULL if no '='
 216 //adds 0 after parm at first white space
 217 char *get_value(char *buf)
 218 {
 219         char *t;
 220
 221         t = strchr(buf,'=')+1;
 222
 223         if (t) {
 224                 while (*t && isspace(*t)) t++;
 225
 226                 if (*t)
 227                         return t;
 228         }
 229
 230         return NULL;            //error!
 231 }
 232
 233 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 234 char *get_parm_value(char *parm,CFILE *f)
 235 {
 236         static char buf[80];
 237
 238         if (!mfgets(buf,80,f))
 239                 return NULL;
 240
 241         if (istok(buf,parm))
 242                 return get_value(buf);
 243         else
 244                 return NULL;
 245 }
 246
 247 int ml_sort_func(mle *e0,mle *e1)
 248 {
 249         return stricmp(e0->mission_name,e1->mission_name);
 250
 251 }
 252
 253 extern char CDROM_dir[];
 254 extern int HoardEquipped();
 255
 256 #define BUILTIN_MISSION "d2.mn2"
 257
 258 //returns 1 if file read ok, else 0
 259 int read_mission_file(char *filename,int count,int location)
 260 {
 261         char filename2[100];
 262         CFILE *mfile;
 263
 264         switch (location) {
 265                 case ML_MISSIONDIR:
 266                         strcpy(filename2,MISSION_DIR);
 267                         break;
 268
 269                 case ML_CDROM:
 270                         songs_stop_redbook();           //so we can read from the CD
 271                         strcpy(filename2,CDROM_dir);
 272                         break;
 273
 274                 default:
 275                         Int3();         //fall through
 276
 277                 case ML_CURDIR:
 278                         strcpy(filename2,"");
 279                         break;
 280         }
 281         strcat(filename2,filename);
 282
 283         mfile = cfopen(filename2,"rb");
 284
 285         if (mfile) {
 286                 char *p;
 287                 char temp[FILENAME_LEN],*t;
 288
 289                 strcpy(temp,filename);
 290                 if ((t = strchr(temp,'.')) == NULL)
 291                         return 0;       //missing extension
 292                 *t = 0;                 //kill extension
 293
 294                 strncpy( Mission_list[count].filename, temp, 9 );
 295                 Mission_list[count].anarchy_only_flag = 0;
 296                 Mission_list[count].location = location;
 297
 298                 p = get_parm_value("name",mfile);
 299
 300                 if (!p) {               //try enhanced mission
 301                         cfseek(mfile,0,SEEK_SET);
 302                         p = get_parm_value("xname",mfile);
 303                 }
 304
 305 #ifdef NETWORK
 306                 if (HoardEquipped())
 307                 {
 308                         if (!p) {               //try super-enhanced mission!
 309                                 cfseek(mfile,0,SEEK_SET);
 310                                 p = get_parm_value("zname",mfile);
 311                         }
 312                 }
 313 #endif
 314
 315                 if (p) {
 316                         char *t;
 317                         if ((t=strchr(p,';'))!=NULL)
 318                                 *t=0;
 319                         t = p + strlen(p)-1;
 320                         while (isspace(*t)) t--;
 321                         strncpy(Mission_list[count].mission_name,p,MISSION_NAME_LEN);
 322                 }
 323                 else {
 324                         cfclose(mfile);
 325                         return 0;
 326                 }
 327
 328                 p = get_parm_value("type",mfile);
 329
 330                 //get mission type
 331                 if (p)
 332                         Mission_list[count].anarchy_only_flag = istok(p,"anarchy");
 333
 334                 cfclose(mfile);
 335
 336                 return 1;
 337         }
 338
 339         return 0;
 340 }
 341
 342
 343 //fills in the global list of missions.  Returns the number of missions
 344 //in the list.  If anarchy_mode set, don't include non-anarchy levels.
 345 //if there is only one mission, this function will call load_mission on it.
 346
 347 extern char CDROM_dir[];
 348 extern char AltHogDir[];
 349 extern char AltHogdir_initialized;
 350
 351 int build_mission_list(int anarchy_mode)
 352 {
 353         static int num_missions=-1;
 354         int count=0,special_count=0;
 355         FILEFINDSTRUCT find;
 356         char search_name[PATH_MAX + 5] = MISSION_DIR "*.mn2";
 357
 358         //now search for levels on disk
 359
 360 //@@Took out this code because after this routine was called once for
 361 //@@a list of single-player missions, a subsequent call for a list of
 362 //@@anarchy missions would not scan again, and thus would not find the
 363 //@@anarchy-only missions.  If we retain the minimum level of install,
 364 //@@we may want to put the code back in, having it always scan for all
 365 //@@missions, and have the code that uses it sort out the ones it wants.
 366 //@@    if (num_missions != -1) {
 367 //@@            if (Current_mission_num != 0)
 368 //@@                    load_mission(0);                                //set built-in mission as default
 369 //@@            return num_missions;
 370 //@@    }
 371
 372         if (!read_mission_file(BUILTIN_MISSION,0,ML_CURDIR))            //read built-in first
 373                 Error("Could not find required mission file <%s>",BUILTIN_MISSION);
 374
 375         special_count = count=1;
 376
 377         if( !FileFindFirst( search_name, &find ) ) {
 378                 do      {
 379                         if (stricmp(find.name,BUILTIN_MISSION)==0)
 380                                 continue;               //skip the built-in
 381
 382                         if (read_mission_file(find.name,count,ML_MISSIONDIR)) {
 383
 384                                 if (anarchy_mode || !Mission_list[count].anarchy_only_flag)
 385                                         count++;
 386                         }
 387
 388                 } while( !FileFindNext( &find ) && count<MAX_MISSIONS);
 389                 FileFindClose();
 390         }
 391
 392         if (AltHogdir_initialized) {
 393                 strcpy(search_name, AltHogDir);
 394                 strcat(search_name, "/" MISSION_DIR "*.mn2");
 395                 if( !FileFindFirst( search_name, &find ) ) {
 396                         do      {
 397                                 if (stricmp(find.name,BUILTIN_MISSION)==0)
 398                                         continue;               //skip the built-in
 399
 400                                 if (read_mission_file(find.name,count,ML_MISSIONDIR)) {
 401
 402                                         if (anarchy_mode || !Mission_list[count].anarchy_only_flag)
 403                                                 count++;
 404                                 }
 405
 406                         } while( !FileFindNext( &find ) && count<MAX_MISSIONS);
 407                         FileFindClose();
 408                 }
 409         }
 410
 411         //move vertigo to top of mission list
 412         {
 413                 int i;
 414
 415                 for (i=special_count;i<count;i++)
 416                         if (!stricmp(Mission_list[i].filename,"D2X")) {         //swap!
 417                                 mle temp;
 418
 419                                 temp = Mission_list[special_count];
 420                                 Mission_list[special_count] = Mission_list[i];
 421                                 Mission_list[i] = temp;
 422
 423                                 special_count++;
 424
 425                                 break;
 426                         }
 427         }
 428
 429
 430         if (count>special_count)
 431                 qsort(&Mission_list[special_count],count-special_count,sizeof(*Mission_list),
 432                                 (int (*)( const void *, const void * ))ml_sort_func);
 433
 434         load_mission(0);                        //set built-in mission as default
 435
 436         num_missions = count;
 437
 438         return count;
 439 }
 440
 441 void init_extra_robot_movie(char *filename);
 442
 443 //values for built-in mission
 444
 445 //loads the specfied mission from the mission list.  build_mission_list()
 446 //must have been called.  If build_mission_list() returns 0, this function
 447 //does not need to be called.  Returns true if mission loaded ok, else false.
 448 int load_mission(int mission_num)
 449 {
 450         CFILE *mfile;
 451         char buf[80], *v;
 452         int found_hogfile;
 453         int enhanced_mission = 0;
 454
 455         Current_mission_num = mission_num;
 456
 457         mprintf(( 0, "Loading mission %d\n", mission_num ));
 458
 459         //read mission from file
 460
 461         switch (Mission_list[mission_num].location) {
 462                 case ML_MISSIONDIR:     strcpy(buf,MISSION_DIR);        break;
 463                 case ML_CDROM:                  strcpy(buf,CDROM_dir);          break;
 464                 default:                                        Int3();                                                 //fall through
 465                 case ML_CURDIR:         strcpy(buf,"");                         break;
 466         }
 467         strcat(buf,Mission_list[mission_num].filename);
 468         strcat(buf,".mn2");
 469
 470         mfile = cfopen(buf,"rb");
 471         if (mfile == NULL) {
 472                 Current_mission_num = -1;
 473                 return 0;               //error!
 474         }
 475
 476         if (mission_num != 0) {         //for non-builtin missions, load HOG
 477
 478                 strcpy(buf+strlen(buf)-4,".hog");               //change extension
 479
 480                 found_hogfile = cfile_use_alternate_hogfile(buf);
 481
 482                 #ifdef RELEASE                          //for release, require mission to be in hogfile
 483                 if (! found_hogfile) {
 484                         cfclose(mfile);
 485                         Current_mission_num = -1;
 486                         return 0;
 487                 }
 488                 #endif
 489         }
 490
 491         //init vars
 492         Last_level =            0;
 493         Last_secret_level = 0;
 494
 495         while (mfgets(buf,80,mfile)) {
 496
 497                 if (istok(buf,"name"))
 498                         continue;                                               //already have name, go to next line
 499                 if (istok(buf,"xname")) {
 500                         enhanced_mission = 1;
 501                         continue;                                               //already have name, go to next line
 502                 }
 503                 if (istok(buf,"zname")) {
 504                         enhanced_mission = 2;
 505                         continue;                                               //already have name, go to next line
 506                 }
 507                 else if (istok(buf,"type"))
 508                         continue;                                               //already have name, go to next line
 509                 else if (istok(buf,"hog")) {
 510                         char    *bufp = buf;
 511
 512                         while (*(bufp++) != '=')
 513                                 ;
 514
 515                         if (*bufp == ' ')
 516                                 while (*(++bufp) == ' ')
 517                                         ;
 518
 519                         cfile_use_alternate_hogfile(bufp);
 520                         mprintf((0, "Hog file override = [%s]\n", bufp));
 521                 }
 522                 else if (istok(buf,"num_levels")) {
 523
 524                         if ((v=get_value(buf))!=NULL) {
 525                                 int n_levels,i;
 526
 527                                 n_levels = atoi(v);
 528
 529                                 for (i=0;i<n_levels && mfgets(buf,80,mfile);i++) {
 530
 531                                         add_term(buf);
 532                                         if (strlen(buf) <= 12) {
 533                                                 strcpy(Level_names[i],buf);
 534                                                 Last_level++;
 535                                         }
 536                                         else
 537                                                 break;
 538                                 }
 539
 540                         }
 541                 }
 542                 else if (istok(buf,"num_secrets")) {
 543                         if ((v=get_value(buf))!=NULL) {
 544                                 int i;
 545
 546                                 N_secret_levels = atoi(v);
 547
 548                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 549
 550                                 for (i=0;i<N_secret_levels && mfgets(buf,80,mfile);i++) {
 551                                         char *t;
 552
 553
 554                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 555                                         else
 556                                                 break;
 557
 558                                         add_term(buf);
 559                                         if (strlen(buf) <= 12) {
 560                                                 strcpy(Secret_level_names[i],buf);
 561                                                 Secret_level_table[i] = atoi(t);
 562                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 563                                                         break;
 564                                                 Last_secret_level--;
 565                                         }
 566                                         else
 567                                                 break;
 568                                 }
 569
 570                         }
 571                 }
 572
 573         }
 574
 575         cfclose(mfile);
 576
 577         if (Last_level <= 0) {
 578                 Current_mission_num = -1;               //no valid mission loaded
 579                 return 0;
 580         }
 581
 582         Current_mission_filename = Mission_list[Current_mission_num].filename;
 583         Current_mission_longname = Mission_list[Current_mission_num].mission_name;
 584
 585         if (enhanced_mission) {
 586                 char t[50];
 587                 extern void bm_read_extra_robots();
 588                 sprintf(t,"%s.ham",Current_mission_filename);
 589                 bm_read_extra_robots(t,enhanced_mission);
 590                 strncpy(t,Current_mission_filename,6);
 591                 strcat(t,"-l.mvl");
 592                 init_extra_robot_movie(t);
 593         }
 594
 595         return 1;
 596 }
 597
 598 //loads the named mission if exists.
 599 //Returns true if mission loaded ok, else false.
 600 int load_mission_by_name(char *mission_name)
 601 {
 602         int n,i;
 603
 604         n = build_mission_list(1);
 605
 606         for (i=0;i<n;i++)
 607                 if (!stricmp(mission_name,Mission_list[i].filename))
 608                         return load_mission(i);
 609
 610         return 0;               //couldn't find mission
 611 }
 612
 613 #endif
 614 #endif
 615