shareware stuff
[btb/d2x.git] / main / mission.c
1 /* $Id: mission.c,v 1.5 2002-08-06 05:12:09 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                 *t = 0;                 //kill extension
289
290                 strncpy( Mission_list[count].filename, temp, 9 );
291                 Mission_list[count].anarchy_only_flag = 0;
292                 Mission_list[count].location = location;
293
294                 p = get_parm_value("name",mfile);
295
296                 if (!p) {               //try enhanced mission
297                         cfseek(mfile,0,SEEK_SET);
298                         p = get_parm_value("xname",mfile);
299                 }
300
301 #ifdef NETWORK
302                 if (HoardEquipped())
303                 {
304                         if (!p) {               //try super-enhanced mission!
305                                 cfseek(mfile,0,SEEK_SET);
306                                 p = get_parm_value("zname",mfile);
307                         }
308                 }
309 #endif
310
311                 if (p) {
312                         char *t;
313                         if ((t=strchr(p,';'))!=NULL)
314                                 *t=0;
315                         t = p + strlen(p)-1;
316                         while (isspace(*t)) t--;
317                         strncpy(Mission_list[count].mission_name,p,MISSION_NAME_LEN);
318                 }
319                 else {
320                         cfclose(mfile);
321                         return 0;
322                 }
323
324                 p = get_parm_value("type",mfile);
325
326                 //get mission type 
327                 if (p)
328                         Mission_list[count].anarchy_only_flag = istok(p,"anarchy");
329
330                 cfclose(mfile);
331
332                 return 1;
333         }
334
335         return 0;
336 }
337
338
339 //fills in the global list of missions.  Returns the number of missions
340 //in the list.  If anarchy_mode set, don't include non-anarchy levels.
341 //if there is only one mission, this function will call load_mission on it.
342
343 extern char CDROM_dir[];
344 extern char AltHogDir[];
345 extern char AltHogdir_initialized;
346
347 int build_mission_list(int anarchy_mode)
348 {
349         static int num_missions=-1;
350         int count=0,special_count=0;
351         FILEFINDSTRUCT find;
352         char search_name[PATH_MAX + 5] = MISSION_DIR "*.mn2";
353
354         //now search for levels on disk
355
356 //@@Took out this code because after this routine was called once for
357 //@@a list of single-player missions, a subsequent call for a list of
358 //@@anarchy missions would not scan again, and thus would not find the
359 //@@anarchy-only missions.  If we retain the minimum level of install,
360 //@@we may want to put the code back in, having it always scan for all
361 //@@missions, and have the code that uses it sort out the ones it wants.
362 //@@    if (num_missions != -1) {
363 //@@            if (Current_mission_num != 0)
364 //@@                    load_mission(0);                                //set built-in mission as default
365 //@@            return num_missions;
366 //@@    }
367
368         if (!read_mission_file(BUILTIN_MISSION,0,ML_CURDIR))            //read built-in first
369                 Error("Could not find required mission file <%s>",BUILTIN_MISSION);
370
371         special_count = count=1;
372
373         if( !FileFindFirst( search_name, &find ) ) {
374                 do      {
375                         if (stricmp(find.name,BUILTIN_MISSION)==0)
376                                 continue;               //skip the built-in
377
378                         if (read_mission_file(find.name,count,ML_MISSIONDIR)) {
379
380                                 if (anarchy_mode || !Mission_list[count].anarchy_only_flag)
381                                         count++;
382                         }
383
384                 } while( !FileFindNext( &find ) && count<MAX_MISSIONS);
385                 FileFindClose();
386         }
387
388         if (AltHogdir_initialized) {
389                 strcpy(search_name, AltHogDir);
390                 strcat(search_name, "/" MISSION_DIR "*.mn2");
391                 if( !FileFindFirst( search_name, &find ) ) {
392                         do      {
393                                 if (stricmp(find.name,BUILTIN_MISSION)==0)
394                                         continue;               //skip the built-in
395
396                                 if (read_mission_file(find.name,count,ML_MISSIONDIR)) {
397
398                                         if (anarchy_mode || !Mission_list[count].anarchy_only_flag)
399                                                 count++;
400                                 }
401
402                         } while( !FileFindNext( &find ) && count<MAX_MISSIONS);
403                         FileFindClose();
404                 }
405         }
406
407         //move vertigo to top of mission list
408         {
409                 int i;
410
411                 for (i=special_count;i<count;i++)
412                         if (!stricmp(Mission_list[i].filename,"D2X")) {         //swap!
413                                 mle temp;
414
415                                 temp = Mission_list[special_count];
416                                 Mission_list[special_count] = Mission_list[i];
417                                 Mission_list[i] = temp;
418
419                                 special_count++;
420
421                                 break;
422                         }
423         }
424
425
426         if (count>special_count)
427                 qsort(&Mission_list[special_count],count-special_count,sizeof(*Mission_list),
428                                 (int (*)( const void *, const void * ))ml_sort_func);
429
430         load_mission(0);                        //set built-in mission as default
431
432         num_missions = count;
433
434         return count;
435 }
436
437 void init_extra_robot_movie(char *filename);
438
439 //values for built-in mission
440
441 //loads the specfied mission from the mission list.  build_mission_list()
442 //must have been called.  If build_mission_list() returns 0, this function
443 //does not need to be called.  Returns true if mission loaded ok, else false.
444 int load_mission(int mission_num)
445 {
446         CFILE *mfile;
447         char buf[80], *v;
448         int found_hogfile;
449         int enhanced_mission = 0;
450
451         Current_mission_num = mission_num;
452
453         mprintf(( 0, "Loading mission %d\n", mission_num ));
454
455         //read mission from file 
456
457         switch (Mission_list[mission_num].location) {
458                 case ML_MISSIONDIR:     strcpy(buf,MISSION_DIR);        break;
459                 case ML_CDROM:                  strcpy(buf,CDROM_dir);          break;
460                 default:                                        Int3();                                                 //fall through
461                 case ML_CURDIR:         strcpy(buf,"");                         break;
462         }
463         strcat(buf,Mission_list[mission_num].filename);
464         strcat(buf,".mn2");
465
466         mfile = cfopen(buf,"rb");
467         if (mfile == NULL) {
468                 Current_mission_num = -1;
469                 return 0;               //error!
470         }
471
472         if (mission_num != 0) {         //for non-builtin missions, load HOG
473
474                 strcpy(buf+strlen(buf)-4,".hog");               //change extension
475
476                 found_hogfile = cfile_use_alternate_hogfile(buf);
477
478                 #ifdef RELEASE                          //for release, require mission to be in hogfile
479                 if (! found_hogfile) {
480                         cfclose(mfile);
481                         Current_mission_num = -1;
482                         return 0;
483                 }
484                 #endif
485         }
486
487         //init vars
488         Last_level =            0;
489         Last_secret_level = 0;
490
491         while (mfgets(buf,80,mfile)) {
492
493                 if (istok(buf,"name"))
494                         continue;                                               //already have name, go to next line
495                 if (istok(buf,"xname")) {
496                         enhanced_mission = 1;
497                         continue;                                               //already have name, go to next line
498                 }
499                 if (istok(buf,"zname")) {
500                         enhanced_mission = 2;
501                         continue;                                               //already have name, go to next line
502                 }
503                 else if (istok(buf,"type"))
504                         continue;                                               //already have name, go to next line                            
505                 else if (istok(buf,"hog")) {
506                         char    *bufp = buf;
507
508                         while (*(bufp++) != '=')
509                                 ;
510
511                         if (*bufp == ' ')
512                                 while (*(++bufp) == ' ')
513                                         ;
514
515                         cfile_use_alternate_hogfile(bufp);
516                         mprintf((0, "Hog file override = [%s]\n", bufp));
517                 }
518                 else if (istok(buf,"num_levels")) {
519
520                         if ((v=get_value(buf))!=NULL) {
521                                 int n_levels,i;
522
523                                 n_levels = atoi(v);
524
525                                 for (i=0;i<n_levels && mfgets(buf,80,mfile);i++) {
526
527                                         add_term(buf);
528                                         if (strlen(buf) <= 12) {
529                                                 strcpy(Level_names[i],buf);
530                                                 Last_level++;
531                                         }
532                                         else
533                                                 break;
534                                 }
535
536                         }
537                 }
538                 else if (istok(buf,"num_secrets")) {
539                         if ((v=get_value(buf))!=NULL) {
540                                 int i;
541
542                                 N_secret_levels = atoi(v);
543
544                                 Assert(N_secret_levels <= MAX_SECRET_LEVELS_PER_MISSION);
545
546                                 for (i=0;i<N_secret_levels && mfgets(buf,80,mfile);i++) {
547                                         char *t;
548
549                                         
550                                         if ((t=strchr(buf,','))!=NULL) *t++=0;
551                                         else
552                                                 break;
553
554                                         add_term(buf);
555                                         if (strlen(buf) <= 12) {
556                                                 strcpy(Secret_level_names[i],buf);
557                                                 Secret_level_table[i] = atoi(t);
558                                                 if (Secret_level_table[i]<1 || Secret_level_table[i]>Last_level)
559                                                         break;
560                                                 Last_secret_level--;
561                                         }
562                                         else
563                                                 break;
564                                 }
565
566                         }
567                 }
568
569         }
570
571         cfclose(mfile);
572
573         if (Last_level <= 0) {
574                 Current_mission_num = -1;               //no valid mission loaded
575                 return 0;
576         }
577
578         Current_mission_filename = Mission_list[Current_mission_num].filename;
579         Current_mission_longname = Mission_list[Current_mission_num].mission_name;
580
581         if (enhanced_mission) {
582                 char t[50];
583                 extern void bm_read_extra_robots();
584                 sprintf(t,"%s.ham",Current_mission_filename);
585                 bm_read_extra_robots(t,enhanced_mission);
586                 strncpy(t,Current_mission_filename,6);
587                 strcat(t,"-l.mvl");
588                 init_extra_robot_movie(t);
589         }
590
591         return 1;
592 }
593
594 //loads the named mission if exists.
595 //Returns true if mission loaded ok, else false.
596 int load_mission_by_name(char *mission_name)
597 {
598         int n,i;
599
600         n = build_mission_list(1);
601
602         for (i=0;i<n;i++)
603                 if (!stricmp(mission_name,Mission_list[i].filename))
604                         return load_mission(i);
605
606         return 0;               //couldn't find mission
607 }
608
609 #endif
610 #endif
611