main/songs.c

   1 /* $Id: songs.c,v 1.9 2003-10-10 09:36:35 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  * Routines to manage the songs in Descent.
  18  *
  19  * Old Log:
  20  * Revision 1.5  1995/11/03  12:52:59  allender
  21  * shareware changes
  22  *
  23  * Revision 1.4  1995/10/18  01:51:33  allender
  24  * fixed up stuff for redbook
  25  *
  26  * Revision 1.3  1995/10/17  13:13:44  allender
  27  * dont' add resource value to songs to play -- now done in digi
  28  * code
  29  *
  30  * Revision 1.2  1995/07/17  08:50:35  allender
  31  * make work with new music system
  32  *
  33  * Revision 1.1  1995/05/16  15:31:05  allender
  34  * Initial revision
  35  *
  36  * Revision 2.1  1995/05/02  16:15:21  john
  37  * Took out printf.
  38  *
  39  * Revision 2.0  1995/02/27  11:27:13  john
  40  * New version 2.0, which has no anonymous unions, builds with
  41  * Watcom 10.0, and doesn't require parsing BITMAPS.TBL.
  42  *
  43  * Revision 1.2  1995/02/11  12:42:12  john
  44  * Added new song method, with FM bank switching..
  45  *
  46  * Revision 1.1  1995/02/11  10:20:33  john
  47  * Initial revision
  48  *
  49  *
  50  */
  51
  52
  53 #ifdef HAVE_CONFIG_H
  54 #include <conf.h>
  55 #endif
  56
  57 #include <stdlib.h>
  58 #include <stdio.h>
  59 #include <string.h>
  60 #include <ctype.h>
  61 #include <unistd.h>
  62
  63 #include "inferno.h"
  64 #include "error.h"
  65 #include "pstypes.h"
  66 #include "args.h"
  67 #include "songs.h"
  68 #include "mono.h"
  69 #include "cfile.h"
  70 #include "digi.h"
  71 #include "rbaudio.h"
  72 #include "kconfig.h"
  73 #include "timer.h"
  74
  75 song_info Songs[MAX_NUM_SONGS];
  76 int Songs_initialized = 0;
  77
  78 #ifndef MACINTOSH
  79 int Num_songs;
  80 #endif
  81
  82 extern void digi_stop_current_song();
  83
  84 int Redbook_enabled = 1;
  85
  86 //0 if redbook is no playing, else the track number
  87 int Redbook_playing = 0;
  88
  89 #define NumLevelSongs (Num_songs - SONG_FIRST_LEVEL_SONG)
  90
  91 extern int CD_blast_mixer();
  92
  93 #ifndef MACINTOSH
  94 #define REDBOOK_VOLUME_SCALE  (255/3)           //255 is MAX
  95 #else
  96 #define REDBOOK_VOLUME_SCALE    (255)
  97 #endif
  98
  99 //takes volume in range 0..8
 100 void set_redbook_volume(int volume)
 101 {
 102         #ifndef MACINTOSH
 103         RBASetVolume(0);                // makes the macs sound really funny
 104         #endif
 105         RBASetVolume(volume*REDBOOK_VOLUME_SCALE/8);
 106 }
 107
 108 extern char CDROM_dir[];
 109
 110 void songs_init()
 111 {
 112         int i;
 113         char inputline[80+1];
 114         CFILE * fp;
 115
 116         if ( Songs_initialized ) return;
 117
 118
 119         #if !defined(MACINTOSH) && !defined(WINDOWS)    // don't crank it if on a macintosh!!!!!
 120                 if (!FindArg("-nomixer"))
 121                         CD_blast_mixer();   // Crank it!
 122         #endif
 123
 124
 125         if (cfexist("descent.sng")) {   // mac (demo?) datafiles don't have the .sng file
 126                 fp = cfopen( "descent.sng", "rb" );
 127                 if ( fp == NULL )
 128                 {
 129                         Error( "Couldn't open descent.sng" );
 130                 }
 131                 i = 0;
 132                 while (cfgets(inputline, 80, fp ))
 133                 {
 134                         char *p = strchr(inputline,'\n');
 135                         if (p) *p = '\0';
 136                         if ( strlen( inputline ) )
 137                         {
 138                                 Assert( i < MAX_NUM_SONGS );
 139                                 sscanf( inputline, "%s %s %s",
 140                                                 Songs[i].filename,
 141                                                 Songs[i].melodic_bank_file,
 142                                                 Songs[i].drum_bank_file );
 143                                 //printf( "%d. '%s' '%s' '%s'\n",i,Songs[i].filename,Songs[i].melodic_bank_file,Songs[i].drum_bank_file );
 144                                 i++;
 145                         }
 146                 }
 147                 Num_songs = i;
 148                 if (Num_songs <= SONG_FIRST_LEVEL_SONG)
 149                         Error("Must have at least %d songs",SONG_FIRST_LEVEL_SONG+1);
 150                 cfclose(fp);
 151         }
 152
 153         Songs_initialized = 1;
 154
 155         //      RBA Hook
 156         #if !defined(SHAREWARE) || ( defined(SHAREWARE) && defined(APPLE_DEMO) )
 157                 if (FindArg("-noredbook"))
 158                 {
 159                         Redbook_enabled = 0;
 160                 }
 161                 else    // use redbook
 162                 {
 163                         #ifndef __MSDOS__ // defined(WINDOWS) || defined(MACINTOSH)
 164                                 RBAInit();
 165                         #else
 166                                 RBAInit(toupper(CDROM_dir[0]) - 'A');
 167                         #endif
 168
 169                                 if (RBAEnabled())
 170                         {
 171                                 set_redbook_volume(Config_redbook_volume);
 172                                 RBARegisterCD();
 173                         }
 174                 }
 175                 //atexit(RBAStop);      // stop song on exit
 176         #endif  // endof ifndef SHAREWARE, ie ifdef SHAREWARE
 177 }
 178
 179 #define FADE_TIME (f1_0/2)
 180
 181 //stop the redbook, so we can read off the CD
 182 void songs_stop_redbook(void)
 183 {
 184         int old_volume = Config_redbook_volume*REDBOOK_VOLUME_SCALE/8;
 185         fix old_time = timer_get_fixed_seconds();
 186
 187         if (Redbook_playing) {          //fade out volume
 188                 int new_volume;
 189                 do {
 190                         fix t = timer_get_fixed_seconds();
 191
 192                         new_volume = fixmuldiv(old_volume,(FADE_TIME - (t-old_time)),FADE_TIME);
 193
 194                         if (new_volume < 0)
 195                                 new_volume = 0;
 196
 197                         RBASetVolume(new_volume);
 198
 199                 } while (new_volume > 0);
 200         }
 201
 202         //RBAStop();                                            // Stop CD, if playing
 203
 204         RBASetVolume(old_volume);       //restore volume
 205
 206         Redbook_playing = 0;
 207
 208 }
 209
 210 //stop any songs - midi or redbook - that are currently playing
 211 void songs_stop_all(void)
 212 {
 213         digi_stop_current_song();       // Stop midi song, if playing
 214
 215         songs_stop_redbook();                   // Stop CD, if playing
 216 }
 217
 218 int force_rb_register=0;
 219
 220 void reinit_redbook()
 221 {
 222         #ifndef __MSDOS__ // defined(WINDOWS) || defined(MACINTOSH)
 223                 RBAInit();
 224         #else
 225                 RBAInit(toupper(CDROM_dir[0]) - 'A');
 226         #endif
 227
 228         if (RBAEnabled())
 229         {
 230                 set_redbook_volume(Config_redbook_volume);
 231                 RBARegisterCD();
 232                 force_rb_register=0;
 233         }
 234 }
 235
 236
 237 //returns 1 if track started sucessfully
 238 //start at tracknum.  if keep_playing set, play to end of disc.  else
 239 //play only specified track
 240 int play_redbook_track(int tracknum,int keep_playing)
 241 {
 242         Redbook_playing = 0;
 243
 244         if (!RBAEnabled() && Redbook_enabled && !FindArg("-noredbook"))
 245                 reinit_redbook();
 246
 247         if (force_rb_register) {
 248                 RBARegisterCD();                        //get new track list for new CD
 249                 force_rb_register = 0;
 250         }
 251
 252         if (Redbook_enabled && RBAEnabled()) {
 253                 int num_tracks = RBAGetNumberOfTracks();
 254                 if (tracknum <= num_tracks)
 255                         if (RBAPlayTracks(tracknum,keep_playing?num_tracks:tracknum))  {
 256                                 Redbook_playing = tracknum;
 257                         }
 258         }
 259
 260         return (Redbook_playing != 0);
 261 }
 262
 263 /*
 264  * Some of these have different Track listings!
 265  * Which one is the "correct" order?
 266  */
 267 #define D2_1_DISCID         0x7d0ff809 // Descent II
 268 #define D2_2_DISCID         0xe010a30e // Descent II
 269 #define D2_3_DISCID         0xd410070d // Descent II
 270 #define D2_4_DISCID         0xc610080d // Descent II
 271 #define D2_DEF_DISCID       0x87102209 // Definitive collection Disc 2
 272 #define D2_OEM_DISCID       0xac0bc30d // Destination: Quartzon
 273 #define D2_OEM2_DISCID      0xc40c0a0d // Destination: Quartzon
 274 #define D2_VERTIGO_DISCID   0x53078208 // Vertigo
 275 #define D2_VERTIGO2_DISCID  0x64071408 // Vertigo + DMB
 276 #define D2_MAC_DISCID       0xb70ee40e // Macintosh
 277 #define D2_IPLAY_DISCID     0x22115710 // iPlay for Macintosh
 278
 279 #define REDBOOK_TITLE_TRACK         2
 280 #define REDBOOK_CREDITS_TRACK       3
 281 #define REDBOOK_FIRST_LEVEL_TRACK   (songs_haved2_cd()?4:1)
 282
 283 // songs_haved2_cd returns 1 if the descent 2 CD is in the drive and
 284 // 0 otherwise
 285
 286 #if 1
 287 int songs_haved2_cd()
 288 {
 289         int discid;
 290
 291         if (!Redbook_enabled)
 292                 return 0;
 293
 294         discid = RBAGetDiscID();
 295
 296         switch (discid) {
 297         case D2_1_DISCID:
 298         case D2_2_DISCID:
 299         case D2_3_DISCID:
 300         case D2_4_DISCID:
 301         case D2_DEF_DISCID:
 302         case D2_OEM_DISCID:
 303         case D2_OEM2_DISCID:
 304         case D2_VERTIGO_DISCID:
 305         case D2_VERTIGO2_DISCID:
 306         case D2_MAC_DISCID:
 307         case D2_IPLAY_DISCID:
 308                 printf("Found D2 CD! discid: %x\n", discid);
 309                 return 1;
 310         default:
 311                 printf("Unknown CD! discid: %x\n", discid);
 312                 return 0;
 313         }
 314 }
 315 #else
 316 int songs_haved2_cd()
 317 {
 318         char temp[128],cwd[128];
 319
 320         getcwd(cwd, 128);
 321
 322         strcpy(temp,CDROM_dir);
 323
 324         #ifndef MACINTOSH               //for PC, strip of trailing slash
 325         if (temp[strlen(temp)-1] == '\\')
 326                 temp[strlen(temp)-1] = 0;
 327         #endif
 328
 329         if ( !chdir(temp) ) {
 330                 chdir(cwd);
 331                 return 1;
 332         }
 333
 334         return 0;
 335 }
 336 #endif
 337
 338
 339 void songs_play_song( int songnum, int repeat )
 340 {
 341         #ifndef SHAREWARE
 342         //Assert(songnum != SONG_ENDLEVEL && songnum != SONG_ENDGAME);  //not in full version
 343         #endif
 344
 345         if ( !Songs_initialized )
 346                 songs_init();
 347
 348         //stop any music already playing
 349
 350         songs_stop_all();
 351
 352         //do we want any of these to be redbook songs?
 353
 354         if (force_rb_register) {
 355                 RBARegisterCD();                        //get new track list for new CD
 356                 force_rb_register = 0;
 357         }
 358
 359         if (songnum == SONG_TITLE)
 360                 play_redbook_track(REDBOOK_TITLE_TRACK,0);
 361         else if (songnum == SONG_CREDITS)
 362                 play_redbook_track(REDBOOK_CREDITS_TRACK,0);
 363
 364         if (!Redbook_playing) {         //not playing redbook, so play midi
 365
 366                 #ifndef MACINTOSH
 367                         digi_play_midi_song( Songs[songnum].filename, Songs[songnum].melodic_bank_file, Songs[songnum].drum_bank_file, repeat );
 368                 #else
 369                         digi_play_midi_song(songnum, repeat);
 370                 #endif
 371         }
 372 }
 373
 374 int current_song_level;
 375
 376 void songs_play_level_song( int levelnum )
 377 {
 378         int songnum;
 379         int n_tracks;
 380
 381         Assert( levelnum != 0 );
 382
 383         if ( !Songs_initialized )
 384                 songs_init();
 385
 386         songs_stop_all();
 387
 388         current_song_level = levelnum;
 389
 390         songnum = (levelnum>0)?(levelnum-1):(-levelnum);
 391
 392         if (!RBAEnabled() && Redbook_enabled && !FindArg("-noredbook"))
 393                 reinit_redbook();
 394
 395         if (force_rb_register) {
 396                 RBARegisterCD();                        //get new track list for new CD
 397                 force_rb_register = 0;
 398         }
 399
 400         if (Redbook_enabled && RBAEnabled() && (n_tracks = RBAGetNumberOfTracks()) > 1) {
 401
 402                 //try to play redbook
 403
 404                 mprintf((0,"n_tracks = %d\n",n_tracks));
 405
 406                 play_redbook_track(REDBOOK_FIRST_LEVEL_TRACK + (songnum % (n_tracks-REDBOOK_FIRST_LEVEL_TRACK+1)),1);
 407         }
 408
 409         if (! Redbook_playing) {                        //not playing redbook, so play midi
 410
 411                 songnum = SONG_FIRST_LEVEL_SONG + (songnum % NumLevelSongs);
 412
 413                 #ifndef MACINTOSH
 414                         digi_play_midi_song( Songs[songnum].filename, Songs[songnum].melodic_bank_file, Songs[songnum].drum_bank_file, 1 );
 415                 #else
 416                         digi_play_midi_song( songnum, 1 );
 417                 #endif
 418
 419         }
 420 }
 421
 422 //this should be called regularly to check for redbook restart
 423 void songs_check_redbook_repeat()
 424 {
 425         static fix last_check_time;
 426         fix current_time;
 427
 428         if (!Redbook_playing || Config_redbook_volume==0) return;
 429
 430         current_time = timer_get_fixed_seconds();
 431         if (current_time < last_check_time || (current_time - last_check_time) >= F2_0) {
 432                 if (!RBAPeekPlayStatus()) {
 433                         stop_time();
 434                         // if title ends, start credit music
 435                         // if credits music ends, restart it
 436                         if (Redbook_playing == REDBOOK_TITLE_TRACK || Redbook_playing == REDBOOK_CREDITS_TRACK)
 437                                 play_redbook_track(REDBOOK_CREDITS_TRACK,0);
 438                         else {
 439                                 //songs_goto_next_song();
 440
 441                                 //new code plays all tracks to end of disk, so if disk has
 442                                 //stopped we must be at end.  So start again with level 1 song.
 443
 444                                 songs_play_level_song(1);
 445                         }
 446                         start_time();
 447                 }
 448                 last_check_time = current_time;
 449         }
 450 }
 451
 452 //goto the next level song
 453 void songs_goto_next_song()
 454 {
 455         if (Redbook_playing)            //get correct track
 456                 current_song_level = RBAGetTrackNum() - REDBOOK_FIRST_LEVEL_TRACK + 1;
 457
 458         songs_play_level_song(current_song_level+1);
 459
 460 }
 461
 462 //goto the previous level song
 463 void songs_goto_prev_song()
 464 {
 465         if (Redbook_playing)            //get correct track
 466                 current_song_level = RBAGetTrackNum() - REDBOOK_FIRST_LEVEL_TRACK + 1;
 467
 468         if (current_song_level > 1)
 469                 songs_play_level_song(current_song_level-1);
 470
 471 }
 472