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 #ifdef HAVE_CONFIG_H
  15 #include <conf.h>
  16 #endif
  17
  18 #ifdef RCS
  19 static char rcsid[] = "$Id: mission.c,v 1.3 2002-01-29 10:11:31 bradleyb Exp $";
  20 #endif
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <ctype.h>
  26 #include <limits.h>
  27
  28 #include "pstypes.h"
  29 #include "cfile.h"
  30
  31 #include "strutil.h"
  32 #include "inferno.h"
  33 #include "mission.h"
  34 #include "gameseq.h"
  35 #include "titles.h"
  36 #include "songs.h"
  37 #include "mono.h"
  38 #include "error.h"
  39 #include "findfile.h"
  40
  41 mle Mission_list[MAX_MISSIONS];
  42
  43 int Current_mission_num;
  44 int     N_secret_levels;                //      Made a global by MK for scoring purposes.  August 1, 1995.
  45 char *Current_mission_filename,*Current_mission_longname;
  46
  47 //this stuff should get defined elsewhere
  48
  49 char Level_names[MAX_LEVELS_PER_MISSION][FILENAME_LEN];
  50 char Secret_level_names[MAX_SECRET_LEVELS_PER_MISSION][FILENAME_LEN];
  51
  52 //where the missions go
  53 #ifndef EDITOR
  54 #define MISSION_DIR "missions/"
  55 #else
  56 #define MISSION_DIR "./"
  57 #endif
  58
  59 #ifdef SHAREWARE
  60
  61 //
  62 //  Special versions of mission routines for shareware
  63 //
  64
  65 #define SHAREWARE_MISSION_FILENAME      "d2demo"
  66 #define SHAREWARE_MISSION_NAME          "Descent 2 Demo"
  67
  68 int build_mission_list(int anarchy_mode)
  69 {
  70         anarchy_mode++;         //kill warning
  71
  72         strcpy(Mission_list[0].filename,SHAREWARE_MISSION_FILENAME);
  73         strcpy(Mission_list[0].mission_name,SHAREWARE_MISSION_NAME);
  74         Mission_list[0].anarchy_only_flag = 0;
  75
  76         return load_mission(0);
  77 }
  78
  79 int load_mission(int mission_num)
  80 {
  81         Assert(mission_num == 0);
  82
  83         Current_mission_num = 0;
  84         Current_mission_filename = Mission_list[0].filename;
  85         Current_mission_longname = Mission_list[0].mission_name;
  86
  87         N_secret_levels = 0;
  88
  89         Assert(Last_level == 3);
  90
  91 #ifdef MACINTOSH        // mac demo is using the regular hog and rl2 files
  92         strcpy(Level_names[0],"d2leva-1.rl2");
  93         strcpy(Level_names[1],"d2leva-2.rl2");
  94         strcpy(Level_names[2],"d2leva-3.rl2");
  95 #else
  96         strcpy(Level_names[0],"d2leva-1.sl2");
  97         strcpy(Level_names[1],"d2leva-2.sl2");
  98         strcpy(Level_names[2],"d2leva-3.sl2");
  99 #endif  // end of ifdef macintosh
 100
 101         return 1;
 102 }
 103
 104 int load_mission_by_name(char *mission_name)
 105 {
 106         if (strcmp(mission_name,SHAREWARE_MISSION_FILENAME))
 107                 return 0;               //cannot load requested mission
 108         else
 109                 return load_mission(0);
 110
 111 }
 112
 113
 114
 115 #else
 116
 117 #if defined(D2_OEM)
 118
 119 //
 120 //  Special versions of mission routines for Diamond/S3 version
 121 //
 122
 123 #define OEM_MISSION_FILENAME    "d2"
 124 #define OEM_MISSION_NAME                "D2 Destination:Quartzon"
 125
 126 int build_mission_list(int anarchy_mode)
 127 {
 128         anarchy_mode++;         //kill warning
 129
 130         strcpy(Mission_list[0].filename,OEM_MISSION_FILENAME);
 131         strcpy(Mission_list[0].mission_name,OEM_MISSION_NAME);
 132         Mission_list[0].anarchy_only_flag = 0;
 133
 134         return load_mission(0);
 135 }
 136
 137 int load_mission(int mission_num)
 138 {
 139         Assert(mission_num == 0);
 140
 141         Current_mission_num = 0;
 142         Current_mission_filename = Mission_list[0].filename;
 143         Current_mission_longname = Mission_list[0].mission_name;
 144
 145         N_secret_levels = 2;
 146
 147         Assert(Last_level == 8);
 148
 149         strcpy(Level_names[0],"d2leva-1.rl2");
 150         strcpy(Level_names[1],"d2leva-2.rl2");
 151         strcpy(Level_names[2],"d2leva-3.rl2");
 152         strcpy(Level_names[3],"d2leva-4.rl2");
 153
 154         strcpy(Secret_level_names[0],"d2leva-s.rl2");
 155
 156         strcpy(Level_names[4],"d2levb-1.rl2");
 157         strcpy(Level_names[5],"d2levb-2.rl2");
 158         strcpy(Level_names[6],"d2levb-3.rl2");
 159         strcpy(Level_names[7],"d2levb-4.rl2");
 160
 161         strcpy(Secret_level_names[1],"d2levb-s.rl2");
 162
 163         Secret_level_table[0] = 1;
 164         Secret_level_table[1] = 5;
 165
 166         return 1;
 167 }
 168
 169 int load_mission_by_name(char *mission_name)
 170 {
 171         if (strcmp(mission_name,OEM_MISSION_FILENAME))
 172                 return 0;               //cannot load requested mission
 173         else
 174                 return load_mission(0);
 175
 176 }
 177
 178 #else
 179
 180 //strips damn newline from end of line
 181 char *mfgets(char *s,int n,CFILE *f)
 182 {
 183         char *r;
 184
 185         r = cfgets(s,n,f);
 186         if (r && s[strlen(s)-1] == '\n')
 187                 s[strlen(s)-1] = 0;
 188
 189         return r;
 190 }
 191
 192 //compare a string for a token. returns true if match
 193 int istok(char *buf,char *tok)
 194 {
 195         return strnicmp(buf,tok,strlen(tok)) == 0;
 196
 197 }
 198
 199 //adds a terminating 0 after a string at the first white space
 200 void add_term(char *s)
 201 {
 202         while (*s && !isspace(*s)) s++;
 203
 204         *s = 0;         //terminate!
 205 }
 206
 207 //returns ptr to string after '=' & white space, or NULL if no '='
 208 //adds 0 after parm at first white space
 209 char *get_value(char *buf)
 210 {
 211         char *t;
 212
 213         t = strchr(buf,'=')+1;
 214
 215         if (t) {
 216                 while (*t && isspace(*t)) t++;
 217
 218                 if (*t)
 219                         return t;
 220         }
 221
 222         return NULL;            //error!
 223 }
 224
 225 //reads a line, returns ptr to value of passed parm.  returns NULL if none
 226 char *get_parm_value(char *parm,CFILE *f)
 227 {
 228         static char buf[80];
 229
 230         if (!mfgets(buf,80,f))
 231                 return NULL;
 232
 233         if (istok(buf,parm))
 234                 return get_value(buf);
 235         else
 236                 return NULL;
 237 }
 238
 239 int ml_sort_func(mle *e0,mle *e1)
 240 {
 241         return stricmp(e0->mission_name,e1->mission_name);
 242
 243 }
 244
 245 extern char CDROM_dir[];
 246 extern int HoardEquipped();
 247
 248 #define BUILTIN_MISSION "d2.mn2"
 249
 250 //returns 1 if file read ok, else 0
 251 int read_mission_file(char *filename,int count,int location)
 252 {
 253         char filename2[100];
 254         CFILE *mfile;
 255
 256         switch (location) {
 257                 case ML_MISSIONDIR:
 258                         strcpy(filename2,MISSION_DIR);
 259                         break;
 260
 261                 case ML_CDROM:
 262                         songs_stop_redbook();           //so we can read from the CD
 263                         strcpy(filename2,CDROM_dir);
 264                         break;
 265
 266                 default:
 267                         Int3();         //fall through
 268
 269                 case ML_CURDIR:
 270                         strcpy(filename2,"");
 271                         break;
 272         }
 273         strcat(filename2,filename);
 274
 275         mfile = cfopen(filename2,"rb");
 276
 277         if (mfile) {
 278                 char *p;
 279                 char temp[FILENAME_LEN],*t;
 280
 281                 strcpy(temp,filename);
 282                 if ((t = strchr(temp,'.')) == NULL)
 283                         return 0;       //missing extension
 284                 *t = 0;                 //kill extension
 285
 286                 strncpy( Mission_list[count].filename, temp, 9 );
 287                 Mission_list[count].anarchy_only_flag = 0;
 288                 Mission_list[count].location = location;
 289
 290                 p = get_parm_value("name",mfile);
 291
 292                 if (!p) {               //try enhanced mission
 293                         cfseek(mfile,0,SEEK_SET);
 294                         p = get_parm_value("xname",mfile);
 295                 }
 296
 297 #ifdef NETWORK
 298                 if (HoardEquipped())
 299                 {
 300                         if (!p) {               //try super-enhanced mission!
 301                                 cfseek(mfile,0,SEEK_SET);
 302                                 p = get_parm_value("zname",mfile);
 303                         }
 304                 }
 305 #endif
 306
 307                 if (p) {
 308                         char *t;
 309                         if ((t=strchr(p,';'))!=NULL)
 310                                 *t=0;
 311                         t = p + strlen(p)-1;
 312                         while (isspace(*t)) t--;
 313                         strncpy(Mission_list[count].mission_name,p,MISSION_NAME_LEN);
 314                 }
 315                 else {
 316                         cfclose(mfile);
 317                         return 0;
 318                 }
 319
 320                 p = get_parm_value("type",mfile);
 321
 322                 //get mission type
 323                 if (p)
 324                         Mission_list[count].anarchy_only_flag = istok(p,"anarchy");
 325
 326                 cfclose(mfile);
 327
 328                 return 1;
 329         }
 330
 331         return 0;
 332 }
 333
 334
 335 //fills in the global list of missions.  Returns the number of missions
 336 //in the list.  If anarchy_mode set, don't include non-anarchy levels.
 337 //if there is only one mission, this function will call load_mission on it.
 338
 339 extern char CDROM_dir[];
 340 extern char AltHogDir[];
 341 extern char AltHogdir_initialized;
 342
 343 int build_mission_list(int anarchy_mode)
 344 {
 345         static int num_missions=-1;
 346         int count=0,special_count=0;
 347         FILEFINDSTRUCT find;
 348         char search_name[PATH_MAX + 5] = MISSION_DIR "*.mn2";
 349
 350         //now search for levels on disk
 351
 352 //@@Took out this code because after this routine was called once for
 353 //@@a list of single-player missions, a subsequent call for a list of
 354 //@@anarchy missions would not scan again, and thus would not find the
 355 //@@anarchy-only missions.  If we retain the minimum level of install,
 356 //@@we may want to put the code back in, having it always scan for all
 357 //@@missions, and have the code that uses it sort out the ones it wants.
 358 //@@    if (num_missions != -1) {
 359 //@@            if (Current_mission_num != 0)
 360 //@@                    load_mission(0);                                //set built-in mission as default
 361 //@@            return num_missions;
 362 //@@    }
 363
 364         if (!read_mission_file(BUILTIN_MISSION,0,ML_CURDIR))            //read built-in first
 365                 Error("Could not find required mission file <%s>",BUILTIN_MISSION);
 366
 367         special_count = count=1;
 368
 369         if( !FileFindFirst( search_name, &find ) ) {
 370                 do      {
 371                         if (stricmp(find.name,BUILTIN_MISSION)==0)
 372                                 continue;               //skip the built-in
 373
 374                         if (read_mission_file(find.name,count,ML_MISSIONDIR)) {
 375
 376                                 if (anarchy_mode || !Mission_list[count].anarchy_only_flag)
 377                                         count++;
 378                         }
 379
 380                 } while( !FileFindNext( &find ) && count<MAX_MISSIONS);
 381                 FileFindClose();
 382         }
 383
 384         if (AltHogdir_initialized) {
 385                 strcpy(search_name, AltHogDir);
 386                 strcat(search_name, "/" MISSION_DIR "*.mn2");
 387                 if( !FileFindFirst( search_name, &find ) ) {
 388                         do      {
 389                                 if (stricmp(find.name,BUILTIN_MISSION)==0)
 390                                         continue;               //skip the built-in
 391
 392                                 if (read_mission_file(find.name,count,ML_MISSIONDIR)) {
 393
 394                                         if (anarchy_mode || !Mission_list[count].anarchy_only_flag)
 395                                                 count++;
 396                                 }
 397
 398                         } while( !FileFindNext( &find ) && count<MAX_MISSIONS);
 399                         FileFindClose();
 400                 }
 401         }
 402
 403         //move vertigo to top of mission list
 404         {
 405                 int i;
 406
 407                 for (i=special_count;i<count;i++)
 408                         if (!stricmp(Mission_list[i].filename,"D2X")) {         //swap!
 409                                 mle temp;
 410
 411                                 temp = Mission_list[special_count];
 412                                 Mission_list[special_count] = Mission_list[i];
 413                                 Mission_list[i] = temp;
 414
 415                                 special_count++;
 416
 417                                 break;
 418                         }
 419         }
 420
 421
 422         if (count>special_count)
 423                 qsort(&Mission_list[special_count],count-special_count,sizeof(*Mission_list),
 424                                 (int (*)( const void *, const void * ))ml_sort_func);
 425
 426         load_mission(0);                        //set built-in mission as default
 427
 428         num_missions = count;
 429
 430         return count;
 431 }
 432
 433 void init_extra_robot_movie(char *filename);
 434
 435 //values for built-in mission
 436
 437 //loads the specfied mission from the mission list.  build_mission_list()
 438 //must have been called.  If build_mission_list() returns 0, this function
 439 //does not need to be called.  Returns true if mission loaded ok, else false.
 440 int load_mission(int mission_num)
 441 {
 442         CFILE *mfile;
 443         char buf[80], *v;
 444         int found_hogfile;
 445         int enhanced_mission = 0;
 446
 447         Current_mission_num = mission_num;
 448
 449         mprintf(( 0, "Loading mission %d\n", mission_num ));
 450
 451         //read mission from file
 452
 453         switch (Mission_list[mission_num].location) {
 454                 case ML_MISSIONDIR:     strcpy(buf,MISSION_DIR);        break;
 455                 case ML_CDROM:                  strcpy(buf,CDROM_dir);          break;
 456                 default:                                        Int3();                                                 //fall through
 457                 case ML_CURDIR:         strcpy(buf,"");                         break;
 458         }
 459         strcat(buf,Mission_list[mission_num].filename);
 460         strcat(buf,".mn2");
 461
 462         mfile = cfopen(buf,"rb");
 463         if (mfile == NULL) {
 464                 Current_mission_num = -1;
 465                 return 0;               //error!
 466         }
 467
 468         if (mission_num != 0) {         //for non-builtin missions, load HOG
 469
 470                 strcpy(buf+strlen(buf)-4,".hog");               //change extension
 471
 472                 found_hogfile = cfile_use_alternate_hogfile(buf);
 473
 474                 #ifdef RELEASE                          //for release, require mission to be in hogfile
 475                 if (! found_hogfile) {
 476                         cfclose(mfile);
 477                         Current_mission_num = -1;
 478                         return 0;
 479                 }
 480                 #endif
 481         }
 482
 483         //init vars
 484         Last_level =            0;
 485         Last_secret_level = 0;
 486
 487         while (mfgets(buf,80,mfile)) {
 488
 489                 if (istok(buf,"name"))
 490                         continue;                                               //already have name, go to next line
 491                 if (istok(buf,"xname")) {
 492                         enhanced_mission = 1;
 493                         continue;                                               //already have name, go to next line
 494                 }
 495                 if (istok(buf,"zname")) {
 496                         enhanced_mission = 2;
 497                         continue;                                               //already have name, go to next line
 498                 }
 499                 else if (istok(buf,"type"))
 500                         continue;                                               //already have name, go to next line
 501                 else if (istok(buf,"hog")) {
 502                         char    *bufp = buf;
 503
 504                         while (*(bufp++) != '=')
 505                                 ;
 506
 507                         if (*bufp == ' ')
 508                                 while (*(++bufp) == ' ')
 509                                         ;
 510
 511                         cfile_use_alternate_hogfile(bufp);
 512                         mprintf((0, "Hog file override = [%s]\n", bufp));
 513                 }
 514                 else if (istok(buf,"num_levels")) {
 515
 516                         if ((v=get_value(buf))!=NULL) {
 517                                 int n_levels,i;
 518
 519                                 n_levels = atoi(v);
 520
 521                                 for (i=0;i<n_levels && mfgets(buf,80,mfile);i++) {
 522
 523                                         add_term(buf);
 524                                         if (strlen(buf) <= 12) {
 525                                                 strcpy(Level_names[i],buf);
 526                                                 Last_level++;
 527                                         }
 528                                         else
 529                                                 break;
 530                                 }
 531
 532                         }
 533                 }
 534                 else if (istok(buf,"num_secrets")) {
 535                         if ((v=get_value(buf))!=NULL) {
 536                                 int i;
 537
 538                                 N_secret_levels = atoi(v);
 539
 540                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
 541
 542                                 for (i=0;i<N_secret_levels && mfgets(buf,80,mfile);i++) {
 543                                         char *t;
 544
 545
 546                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
 547                                         else
 548                                                 break;
 549
 550                                         add_term(buf);
 551                                         if (strlen(buf) <= 12) {
 552                                                 strcpy(Secret_level_names[i],buf);
 553                                                 Secret_level_table[i] = atoi(t);
 554                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
 555                                                         break;
 556                                                 Last_secret_level--;
 557                                         }
 558                                         else
 559                                                 break;
 560                                 }
 561
 562                         }
 563                 }
 564
 565         }
 566
 567         cfclose(mfile);
 568
 569         if (Last_level <= 0) {
 570                 Current_mission_num = -1;               //no valid mission loaded
 571                 return 0;
 572         }
 573
 574         Current_mission_filename = Mission_list[Current_mission_num].filename;
 575         Current_mission_longname = Mission_list[Current_mission_num].mission_name;
 576
 577         if (enhanced_mission) {
 578                 char t[50];
 579                 extern void bm_read_extra_robots();
 580                 sprintf(t,"%s.ham",Current_mission_filename);
 581                 bm_read_extra_robots(t,enhanced_mission);
 582                 strncpy(t,Current_mission_filename,6);
 583                 strcat(t,"-l.mvl");
 584                 init_extra_robot_movie(t);
 585         }
 586
 587         return 1;
 588 }
 589
 590 //loads the named mission if exists.
 591 //Returns true if mission loaded ok, else false.
 592 int load_mission_by_name(char *mission_name)
 593 {
 594         int n,i;
 595
 596         n = build_mission_list(1);
 597
 598         for (i=0;i<n;i++)
 599                 if (!stricmp(mission_name,Mission_list[i].filename))
 600                         return load_mission(i);
 601
 602         return 0;               //couldn't find mission
 603 }
 604
 605 #endif
 606 #endif
 607