set builtin_hogsize to 0 for the Descent 1 built-in mission
[btb/d2x.git] / main / mission.c
1 /* $Id: mission.c,v 1.36 2004-12-04 04:03:10 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  * Code to handle multiple missions
18  *
19  */
20
21 #ifdef HAVE_CONFIG_H
22 #include <conf.h>
23 #endif
24
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <ctype.h>
29 #include <limits.h>
30
31 #include "pstypes.h"
32 #include "cfile.h"
33
34 #include "strutil.h"
35 #include "inferno.h"
36 #include "mission.h"
37 #include "gameseq.h"
38 #include "titles.h"
39 #include "songs.h"
40 #include "mono.h"
41 #include "error.h"
42 #include "config.h"
43 #include "newmenu.h"
44 #include "text.h"
45 #include "u_mem.h"
46 #include "ignorecase.h"
47
48 //values for d1 built-in mission
49 #define BIM_LAST_LEVEL          27
50 #define BIM_LAST_SECRET_LEVEL   -3
51 #define BIM_BRIEFING_FILE       "briefing.tex"
52 #define BIM_ENDING_FILE         "endreg.tex"
53
54 //mission list entry
55 typedef struct mle {
56     char    mission_name[MISSION_NAME_LEN+1];
57     char    filename[9];                // filename without extension
58     ubyte   descent_version;            // descent 1 or descent 2?
59     bool        anarchy_only_flag;          // if true, mission is anarchy only
60     int         builtin_hogsize;        // This is used to determine the version. Only for the built in mission.
61     ubyte   location;                   // see defines below
62 } mle;
63
64 //values that describe where a mission is located
65 #define ML_CURDIR       0
66 #define ML_MISSIONDIR   1
67 #define ML_CDROM        2
68
69 int num_missions = -1;
70
71 Mission *Current_mission = NULL; // currently loaded mission
72
73 //
74 //  Special versions of mission routines for d1 builtins
75 //
76
77 int load_mission_d1(void)
78 {
79         int i;
80
81         switch (cfile_size("descent.hog")) {
82         case D1_SHAREWARE_MISSION_HOGSIZE:
83         case D1_SHAREWARE_10_MISSION_HOGSIZE:
84                 N_secret_levels = 0;
85
86                 Last_level = 7;
87                 Last_secret_level = 0;
88
89                 //build level names
90                 for (i=0;i<Last_level;i++)
91                         sprintf(Level_names[i], "level%02d.sdl", i+1);
92
93                 break;
94         case D1_MAC_SHARE_MISSION_HOGSIZE:
95                 N_secret_levels = 0;
96
97                 Last_level = 3;
98                 Last_secret_level = 0;
99
100                 //build level names
101                 for (i=0;i<Last_level;i++)
102                         sprintf(Level_names[i], "level%02d.sdl", i+1);
103
104                 break;
105         case D1_OEM_MISSION_HOGSIZE:
106         case D1_OEM_10_MISSION_HOGSIZE:
107                 N_secret_levels = 1;
108
109                 Last_level = 15;
110                 Last_secret_level = -1;
111
112                 //build level names
113                 for (i=0; i < Last_level - 1; i++)
114                         sprintf(Level_names[i], "level%02d.rdl", i+1);
115                 sprintf(Level_names[i], "saturn%02d.rdl", i+1);
116                 for (i=0; i < -Last_secret_level; i++)
117                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
118
119                 Secret_level_table[0] = 10;
120
121                 break;
122         default:
123                 Int3(); // fall through
124         case D1_MISSION_HOGSIZE:
125         case D1_10_MISSION_HOGSIZE:
126         case D1_MAC_MISSION_HOGSIZE:
127                 N_secret_levels = 3;
128
129                 Last_level = BIM_LAST_LEVEL;
130                 Last_secret_level = BIM_LAST_SECRET_LEVEL;
131
132                 //build level names
133                 for (i=0;i<Last_level;i++)
134                         sprintf(Level_names[i], "level%02d.rdl", i+1);
135                 for (i=0;i<-Last_secret_level;i++)
136                         sprintf(Secret_level_names[i], "levels%1d.rdl", i+1);
137
138                 Secret_level_table[0] = 10;
139                 Secret_level_table[1] = 21;
140                 Secret_level_table[2] = 24;
141
142                 break;
143         }
144         strcpy(Briefing_text_filename,BIM_BRIEFING_FILE);
145         strcpy(Ending_text_filename,BIM_ENDING_FILE);
146
147         return 1;
148 }
149
150
151 //
152 //  Special versions of mission routines for shareware
153 //
154
155 int load_mission_shareware(void)
156 {
157     strcpy(Current_mission->mission_name, SHAREWARE_MISSION_NAME);
158     Current_mission->descent_version = 2;
159     Current_mission->anarchy_only_flag = 0;
160     
161     switch (Current_mission->builtin_hogsize) {
162         case MAC_SHARE_MISSION_HOGSIZE:
163                 N_secret_levels = 1;
164
165                 Last_level = 4;
166                 Last_secret_level = -1;
167
168                 // mac demo is using the regular hog and rl2 files
169                 strcpy(Level_names[0],"d2leva-1.rl2");
170                 strcpy(Level_names[1],"d2leva-2.rl2");
171                 strcpy(Level_names[2],"d2leva-3.rl2");
172                 strcpy(Level_names[3],"d2leva-4.rl2");
173                 strcpy(Secret_level_names[0],"d2leva-s.rl2");
174                 break;
175         default:
176                 Int3(); // fall through
177         case SHAREWARE_MISSION_HOGSIZE:
178                 N_secret_levels = 0;
179
180                 Last_level = 3;
181                 Last_secret_level = 0;
182
183                 strcpy(Level_names[0],"d2leva-1.sl2");
184                 strcpy(Level_names[1],"d2leva-2.sl2");
185                 strcpy(Level_names[2],"d2leva-3.sl2");
186         }
187
188         return 1;
189 }
190
191
192 //
193 //  Special versions of mission routines for Diamond/S3 version
194 //
195
196 int load_mission_oem(void)
197 {
198     strcpy(Current_mission->mission_name, OEM_MISSION_NAME);
199     Current_mission->descent_version = 2;
200     Current_mission->anarchy_only_flag = 0;
201     
202         N_secret_levels = 2;
203
204         Last_level = 8;
205         Last_secret_level = -2;
206
207         strcpy(Level_names[0],"d2leva-1.rl2");
208         strcpy(Level_names[1],"d2leva-2.rl2");
209         strcpy(Level_names[2],"d2leva-3.rl2");
210         strcpy(Level_names[3],"d2leva-4.rl2");
211
212         strcpy(Secret_level_names[0],"d2leva-s.rl2");
213
214         strcpy(Level_names[4],"d2levb-1.rl2");
215         strcpy(Level_names[5],"d2levb-2.rl2");
216         strcpy(Level_names[6],"d2levb-3.rl2");
217         strcpy(Level_names[7],"d2levb-4.rl2");
218
219         strcpy(Secret_level_names[1],"d2levb-s.rl2");
220
221         Secret_level_table[0] = 1;
222         Secret_level_table[1] = 5;
223
224         return 1;
225 }
226
227
228 //compare a string for a token. returns true if match
229 int istok(char *buf,char *tok)
230 {
231         return strnicmp(buf,tok,strlen(tok)) == 0;
232
233 }
234
235 //adds a terminating 0 after a string at the first white space
236 void add_term(char *s)
237 {
238         while (*s && !isspace(*s)) s++;
239
240         *s = 0;         //terminate!
241 }
242
243 //returns ptr to string after '=' & white space, or NULL if no '='
244 //adds 0 after parm at first white space
245 char *get_value(char *buf)
246 {
247         char *t;
248
249         t = strchr(buf,'=')+1;
250
251         if (t) {
252                 while (*t && isspace(*t)) t++;
253
254                 if (*t)
255                         return t;
256         }
257
258         return NULL;            //error!
259 }
260
261 //reads a line, returns ptr to value of passed parm.  returns NULL if none
262 char *get_parm_value(char *parm,CFILE *f)
263 {
264         static char buf[80];
265
266         if (!cfgets(buf,80,f))
267                 return NULL;
268
269         if (istok(buf,parm))
270                 return get_value(buf);
271         else
272                 return NULL;
273 }
274
275 int ml_sort_func(mle *e0,mle *e1)
276 {
277         return stricmp(e0->mission_name,e1->mission_name);
278
279 }
280
281 extern char CDROM_dir[];
282
283 //returns 1 if file read ok, else 0
284 int read_mission_file(mle *mission, char *filename, int location)
285 {
286         char filename2[100];
287         CFILE *mfile;
288
289         //printf("reading: %s\n", filename);
290
291         switch (location) {
292                 case ML_MISSIONDIR:
293                         strcpy(filename2,MISSION_DIR);
294                         break;
295
296                 case ML_CDROM:
297                         songs_stop_redbook();           //so we can read from the CD
298                         strcpy(filename2,CDROM_dir);
299                         break;
300
301                 default:
302                         Int3();         //fall through
303
304                 case ML_CURDIR:
305                         strcpy(filename2,"");
306                         break;
307         }
308         strcat(filename2,filename);
309
310         mfile = cfopen(filename2,"rb");
311
312         if (mfile) {
313                 char *p;
314                 char temp[FILENAME_LEN],*t;
315
316                 strcpy(temp,filename);
317                 if ((t = strchr(temp,'.')) == NULL)
318                         return 0;       //missing extension
319                 // look if it's .mn2 or .msn
320                 mission->descent_version = (t[3] == '2') ? 2 : 1;
321                 *t = 0;                 //kill extension
322
323                 strncpy( mission->filename, temp, 9 );
324                 mission->anarchy_only_flag = 0;
325                 mission->location = location;
326
327                 p = get_parm_value("name",mfile);
328
329                 if (!p) {               //try enhanced mission
330                         cfseek(mfile,0,SEEK_SET);
331                         p = get_parm_value("xname",mfile);
332                 }
333
334                 if (!p) {       //try super-enhanced mission!
335                         cfseek(mfile,0,SEEK_SET);
336                         p = get_parm_value("zname",mfile);
337                 }
338
339                 if (p) {
340                         char *t;
341                         if ((t=strchr(p,';'))!=NULL)
342                                 *t=0;
343                         t = p + strlen(p)-1;
344                         while (isspace(*t)) t--;
345                         strncpy(mission->mission_name,p,MISSION_NAME_LEN);
346                 }
347                 else {
348                         cfclose(mfile);
349                         return 0;
350                 }
351
352                 p = get_parm_value("type",mfile);
353
354                 //get mission type
355                 if (p)
356                         mission->anarchy_only_flag = istok(p,"anarchy");
357
358                 cfclose(mfile);
359
360                 return 1;
361         }
362
363         return 0;
364 }
365
366 void add_d1_builtin_mission_to_list(mle *mission)
367 {
368     int size;
369     
370         if (!cfexist("descent.hog"))
371                 return;
372
373         size = cfile_size("descent.hog");
374
375         switch (size) {
376         case D1_SHAREWARE_MISSION_HOGSIZE:
377         case D1_SHAREWARE_10_MISSION_HOGSIZE:
378         case D1_MAC_SHARE_MISSION_HOGSIZE:
379                 strcpy(mission->filename, D1_MISSION_FILENAME);
380                 strcpy(mission->mission_name, D1_SHAREWARE_MISSION_NAME);
381                 mission->anarchy_only_flag = 0;
382                 break;
383         case D1_OEM_MISSION_HOGSIZE:
384         case D1_OEM_10_MISSION_HOGSIZE:
385                 strcpy(mission->filename, D1_MISSION_FILENAME);
386                 strcpy(mission->mission_name, D1_OEM_MISSION_NAME);
387                 mission->anarchy_only_flag = 0;
388                 break;
389         default:
390                 Warning("Unknown D1 hogsize %d\n", size);
391                 Int3();
392                 // fall through
393         case D1_MISSION_HOGSIZE:
394         case D1_10_MISSION_HOGSIZE:
395         case D1_MAC_MISSION_HOGSIZE:
396                 strcpy(mission->filename, D1_MISSION_FILENAME);
397                 strcpy(mission->mission_name, D1_MISSION_NAME);
398                 mission->anarchy_only_flag = 0;
399                 break;
400         }
401
402         mission->descent_version = 1;
403         mission->anarchy_only_flag = 0;
404         mission->builtin_hogsize = 0;
405         num_missions++;
406 }
407
408
409 void add_builtin_mission_to_list(mle *mission, char *name)
410 {
411     int size = cfile_size("descent2.hog");
412     
413         if (size == -1)
414                 size = cfile_size("d2demo.hog");
415
416         switch (size) {
417         case SHAREWARE_MISSION_HOGSIZE:
418         case MAC_SHARE_MISSION_HOGSIZE:
419                 strcpy(mission->filename,SHAREWARE_MISSION_FILENAME);
420                 strcpy(mission->mission_name,SHAREWARE_MISSION_NAME);
421                 mission->anarchy_only_flag = 0;
422                 break;
423         case OEM_MISSION_HOGSIZE:
424                 strcpy(mission->filename,OEM_MISSION_FILENAME);
425                 strcpy(mission->mission_name,OEM_MISSION_NAME);
426                 mission->anarchy_only_flag = 0;
427                 break;
428         default:
429                 Warning("Unknown hogsize %d, trying %s\n", size, FULL_MISSION_FILENAME ".mn2");
430                 Int3(); //fall through
431         case FULL_MISSION_HOGSIZE:
432         case FULL_10_MISSION_HOGSIZE:
433         case MAC_FULL_MISSION_HOGSIZE:
434                 if (!read_mission_file(mission, FULL_MISSION_FILENAME ".mn2", ML_CURDIR))
435                         Error("Could not find required mission file <%s>", FULL_MISSION_FILENAME ".mn2");
436         }
437
438         strcpy(name, mission->filename);
439     mission->builtin_hogsize = size;
440         mission->descent_version = 2;
441         mission->anarchy_only_flag = 0;
442         num_missions++;
443 }
444
445
446 void add_missions_to_list(mle *mission, int anarchy_mode)
447 {
448         char **find, **i, *ext;
449
450         find = PHYSFS_enumerateFiles(MISSION_DIR);
451
452         for (i = find; *i != NULL; i++)
453         {
454                 ext = strrchr(*i, '.');
455                 if (ext && (!strnicmp(ext, ".msn", 4) || !strnicmp(ext, ".mn2", 4)))
456                         if (read_mission_file(mission, *i, ML_MISSIONDIR))
457                                 if (anarchy_mode || !mission->anarchy_only_flag) {
458                                         mission++;
459                                         num_missions++;
460                                         mission->builtin_hogsize = 0;
461                                 }
462                 if (num_missions >= MAX_MISSIONS)
463                 {
464                         mprintf((0, "Warning: more missions than d2x can handle\n"));
465                         break;
466                 }
467         }
468
469         PHYSFS_freeList(find);
470 }
471
472 /* move <mission_name> to <place> on mission list, increment <place> */
473 void promote (mle *mission_list, char * mission_name, int * top_place)
474 {
475         int i;
476         char name[FILENAME_LEN], * t;
477         strcpy(name, mission_name);
478         if ((t = strchr(name,'.')) != NULL)
479                 *t = 0; //kill extension
480         //printf("promoting: %s\n", name);
481         for (i = *top_place; i < num_missions; i++)
482                 if (!stricmp(mission_list[i].filename, name)) {
483                         //swap mission positions
484                         mle temp;
485
486                         temp = mission_list[*top_place];
487                         mission_list[*top_place] = mission_list[i];
488                         mission_list[i] = temp;
489                         ++(*top_place);
490                         break;
491                 }
492 }
493
494 void free_mission(void)
495 {
496     // May become more complex with the editor
497     if (Current_mission) {
498         d_free(Current_mission);
499     }
500 }
501
502
503
504 //fills in the global list of missions.  Returns the number of missions
505 //in the list.  If anarchy_mode is set, then also add anarchy-only missions.
506
507 extern char CDROM_dir[];
508 #if 0
509 extern char AltHogDir[];
510 extern char AltHogdir_initialized;
511 #endif
512
513 mle *build_mission_list(int anarchy_mode)
514 {
515         mle *mission_list;
516         int top_place;
517     char        builtin_mission_filename[FILENAME_LEN];
518
519         //now search for levels on disk
520
521 //@@Took out this code because after this routine was called once for
522 //@@a list of single-player missions, a subsequent call for a list of
523 //@@anarchy missions would not scan again, and thus would not find the
524 //@@anarchy-only missions.  If we retain the minimum level of install,
525 //@@we may want to put the code back in, having it always scan for all
526 //@@missions, and have the code that uses it sort out the ones it wants.
527 //@@    if (num_missions != -1) {
528 //@@            if (Current_mission_num != 0)
529 //@@                    load_mission(0);                                //set built-in mission as default
530 //@@            return num_missions;
531 //@@    }
532
533         MALLOC(mission_list, mle, MAX_MISSIONS);
534         num_missions = 0;
535         
536         add_builtin_mission_to_list(mission_list + num_missions, builtin_mission_filename);  //read built-in first
537         add_d1_builtin_mission_to_list(mission_list + num_missions);
538         add_missions_to_list(mission_list + num_missions, anarchy_mode);
539         
540         // move original missions (in story-chronological order)
541         // to top of mission list
542         top_place = 0;
543         promote(mission_list, "descent", &top_place); // original descent 1 mission
544         promote(mission_list, builtin_mission_filename, &top_place); // d2 or d2demo
545         promote(mission_list, "d2x", &top_place); // vertigo
546
547         if (num_missions > top_place)
548                 qsort(&mission_list[top_place],
549                       num_missions - top_place,
550                       sizeof(*mission_list),
551                                 (int (*)( const void *, const void * ))ml_sort_func);
552
553
554         if (num_missions > top_place)
555                 qsort(&mission_list[top_place],
556                       num_missions - top_place,
557                       sizeof(*mission_list),
558                       (int (*)( const void *, const void * ))ml_sort_func);
559
560         //load_mission(0);   //set built-in mission as default
561
562     atexit(free_mission);
563
564         return mission_list;
565 }
566
567 void free_mission_list(mle *mission_list)
568 {
569         d_free(mission_list);
570         num_missions = 0;
571 }
572
573 void init_extra_robot_movie(char *filename);
574
575 //values for built-in mission
576
577 //loads the specfied mission from the mission list.
578 //build_mission_list() must have been called.
579 //Returns true if mission loaded ok, else false.
580 int load_mission(mle *mission)
581 {
582         CFILE *mfile;
583         char buf[80], *v;
584     int found_hogfile;
585
586     if (Current_mission)
587         free_mission();
588     Current_mission = d_malloc(sizeof(Mission));
589     if (!Current_mission) return 0;
590     *(mle *) Current_mission = *mission;
591
592     // for Descent 1 missions, load descent.hog
593     if (EMULATING_D1) {
594         if (!cfile_init("descent.hog"))
595             Warning("descent.hog not available, this mission may be missing some files required for briefings and exit sequence\n");
596         if (!stricmp(Current_mission_filename, D1_MISSION_FILENAME))
597             return load_mission_d1();
598     }
599
600     if (PLAYING_BUILTIN_MISSION) {
601                 switch (Current_mission->builtin_hogsize) {
602                 case SHAREWARE_MISSION_HOGSIZE:
603                 case MAC_SHARE_MISSION_HOGSIZE:
604                         return load_mission_shareware();
605                         break;
606                 case OEM_MISSION_HOGSIZE:
607                         return load_mission_oem();
608                         break;
609                 default:
610                         Int3(); // fall through
611                 case FULL_MISSION_HOGSIZE:
612                 case FULL_10_MISSION_HOGSIZE:
613                 case MAC_FULL_MISSION_HOGSIZE:
614                         // continue on... (use d2.mn2 from hogfile)
615                         break;
616                 }
617     }
618
619         mprintf(( 0, "Loading mission %s\n", Current_mission_filename ));
620
621         //read mission from file
622
623         switch (mission->location) {
624         case ML_MISSIONDIR:
625                 strcpy(buf,MISSION_DIR);
626                 break;
627         case ML_CDROM:
628                 strcpy(buf,CDROM_dir);
629                 break;
630         default:
631                 Int3();                                                 //fall through
632         case ML_CURDIR:
633                 strcpy(buf,"");
634                 break;
635         }
636         strcat(buf, mission->filename);
637         if (mission->descent_version == 2)
638                 strcat(buf,".mn2");
639         else
640                 strcat(buf,".msn");
641
642         PHYSFSEXT_locateCorrectCase(buf);
643
644         mfile = cfopen(buf,"rb");
645         if (mfile == NULL) {
646         free_mission();
647                 return 0;               //error!
648         }
649
650     //for non-builtin missions, load HOG
651     if (!PLAYING_BUILTIN_MISSION) {
652
653         strcpy(buf+strlen(buf)-4,".hog");               //change extension
654
655                 PHYSFSEXT_locateCorrectCase(buf);
656
657                 found_hogfile = cfile_init(buf);
658
659 #ifdef RELEASE                          //for release, require mission to be in hogfile
660         if (! found_hogfile) {
661             cfclose(mfile);
662             free_mission();
663             return 0;
664         }
665 #endif
666     }
667
668     //init vars
669         Last_level = 0;
670         Last_secret_level = 0;
671         Briefing_text_filename[0] = 0;
672         Ending_text_filename[0] = 0;
673
674         while (cfgets(buf,80,mfile)) {
675
676                 if (istok(buf,"name")) {
677                         Current_mission->enhanced = 0;
678                         continue;                                               //already have name, go to next line
679                 }
680                 if (istok(buf,"xname")) {
681                         Current_mission->enhanced = 1;
682                         continue;                                               //already have name, go to next line
683                 }
684                 if (istok(buf,"zname")) {
685                         Current_mission->enhanced = 2;
686                         continue;                                               //already have name, go to next line
687                 }
688                 else if (istok(buf,"type"))
689                         continue;                                               //already have name, go to next line
690                 else if (istok(buf,"hog")) {
691                         char    *bufp = buf;
692
693                         while (*(bufp++) != '=')
694                                 ;
695
696                         if (*bufp == ' ')
697                                 while (*(++bufp) == ' ')
698                                         ;
699
700                         cfile_init(bufp);
701                         mprintf((0, "Hog file override = [%s]\n", bufp));
702                 }
703                 else if (istok(buf,"briefing")) {
704                         if ((v = get_value(buf)) != NULL) {
705                                 add_term(v);
706                                 if (strlen(v) < 13)
707                                         strcpy(Briefing_text_filename,v);
708                         }
709                 }
710                 else if (istok(buf,"ending")) {
711                         if ((v = get_value(buf)) != NULL) {
712                                 add_term(v);
713                                 if (strlen(v) < 13)
714                                         strcpy(Ending_text_filename,v);
715                         }
716                 }
717                 else if (istok(buf,"num_levels")) {
718
719                         if ((v=get_value(buf))!=NULL) {
720                                 int n_levels,i;
721
722                                 n_levels = atoi(v);
723
724                                 for (i=0;i<n_levels && cfgets(buf,80,mfile);i++) {
725
726                                         add_term(buf);
727                                         if (strlen(buf) <= 12) {
728                                                 strcpy(Level_names[i],buf);
729                                                 Last_level++;
730                                         }
731                                         else
732                                                 break;
733                                 }
734
735                         }
736                 }
737                 else if (istok(buf,"num_secrets")) {
738                         if ((v=get_value(buf))!=NULL) {
739                                 int i;
740
741                                 N_secret_levels = atoi(v);
742
743                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
744
745                                 for (i=0;i<N_secret_levels && cfgets(buf,80,mfile);i++) {
746                                         char *t;
747
748                                         
749                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
750                                         else
751                                                 break;
752
753                                         add_term(buf);
754                                         if (strlen(buf) <= 12) {
755                                                 strcpy(Secret_level_names[i],buf);
756                                                 Secret_level_table[i] = atoi(t);
757                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
758                                                         break;
759                                                 Last_secret_level--;
760                                         }
761                                         else
762                                                 break;
763                                 }
764
765                         }
766                 }
767
768         }
769
770         cfclose(mfile);
771
772         if (Last_level <= 0) {
773                 free_mission();         //no valid mission loaded
774                 return 0;
775         }
776
777         if (Current_mission->enhanced) {
778                 char t[50];
779                 extern void bm_read_extra_robots();
780                 sprintf(t,"%s.ham",Current_mission_filename);
781                 bm_read_extra_robots(t, Current_mission->enhanced);
782                 strncpy(t,Current_mission_filename,6);
783                 init_extra_robot_movie(t);
784         }
785
786         return 1;
787 }
788
789 //loads the named mission if exists.
790 //Returns true if mission loaded ok, else false.
791 int load_mission_by_name(char *mission_name)
792 {
793         int i;
794         mle *mission_list = build_mission_list(1);
795         bool found = 0;
796
797         for (i = 0; i < num_missions; i++)
798                 if (!stricmp(mission_name, mission_list[i].filename))
799                         found = load_mission(mission_list + i);
800
801         free_mission_list(mission_list);
802         return found;
803 }
804
805 int select_mission(int anarchy_mode, char *message)
806 {
807     mle *mission_list = build_mission_list(anarchy_mode);
808         int new_mission_num;
809
810     if (num_missions <= 1) {
811         new_mission_num = load_mission(mission_list) ? 0 : -1;
812     } else {
813         int i, default_mission;
814         char * m[MAX_MISSIONS];
815
816         default_mission = 0;
817         for (i = 0; i < num_missions; i++) {
818             m[i] = mission_list[i].mission_name;
819             if ( !stricmp( m[i], config_last_mission ) )
820                 default_mission = i;
821         }
822
823         new_mission_num = newmenu_listbox1( message, num_missions, m, 1, default_mission, NULL );
824
825         if (new_mission_num >= 0) {
826                         // Chose a mission
827                         strcpy(config_last_mission, m[new_mission_num]  );
828         
829                         if (!load_mission(mission_list + new_mission_num)) {
830                                 nm_messagebox( NULL, 1, TXT_OK, TXT_MISSION_ERROR);
831                                 new_mission_num = -1;
832                         }
833                 }
834     }
835
836         free_mission_list(mission_list);
837     return (new_mission_num >= 0);
838 }