main/songs.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 #include <stdlib.h>
  19 #include <stdio.h>
  20 #include <string.h>
  21 #include <ctype.h>
  22 #include <unistd.h>
  23
  24 #include "inferno.h"
  25 #include "error.h"
  26 #include "pstypes.h"
  27 #include "args.h"
  28 #include "songs.h"
  29 #include "mono.h"
  30 #include "cfile.h"
  31 #include "digi.h"
  32 #include "rbaudio.h"
  33 #include "kconfig.h"
  34 #include "timer.h"
  35
  36 song_info Songs[MAX_NUM_SONGS];
  37 int Songs_initialized = 0;
  38
  39 #ifndef MACINTOSH
  40 int Num_songs;
  41 #endif
  42
  43 extern void digi_stop_current_song();
  44
  45 int Redbook_enabled = 1;
  46
  47 //0 if redbook is no playing, else the track number
  48 int Redbook_playing = 0;
  49
  50 #define NumLevelSongs (Num_songs - SONG_FIRST_LEVEL_SONG)
  51
  52 extern int CD_blast_mixer();
  53
  54 #ifndef MACINTOSH
  55 #define REDBOOK_VOLUME_SCALE  (255/3)           //255 is MAX
  56 #else
  57 #define REDBOOK_VOLUME_SCALE    (255)
  58 #endif
  59
  60 //takes volume in range 0..8
  61 void set_redbook_volume(int volume)
  62 {
  63         #ifndef MACINTOSH
  64         RBASetVolume(0);                // makes the macs sound really funny
  65         #endif
  66         RBASetVolume(volume*REDBOOK_VOLUME_SCALE/8);
  67 }
  68
  69 extern char CDROM_dir[];
  70
  71 void songs_init()
  72 {
  73         int i;
  74         char inputline[80+1];
  75         CFILE * fp;
  76
  77         if ( Songs_initialized ) return;
  78
  79
  80         #if !defined(MACINTOSH) && !defined(WINDOWS)    // don't crank it if on a macintosh!!!!!
  81                 if (!FindArg("-nomixer"))
  82                         CD_blast_mixer();   // Crank it!
  83         #endif
  84
  85
  86         if (cfexist("descent.sng")) {   // mac (demo?) datafiles don't have the .sng file
  87                 fp = cfopen( "descent.sng", "rb" );
  88                 if ( fp == NULL )
  89                 {
  90                         Error( "Couldn't open descent.sng" );
  91                 }
  92                 i = 0;
  93                 while (cfgets(inputline, 80, fp ))
  94                 {
  95                         char *p = strchr(inputline,'\n');
  96                         if (p) *p = '\0';
  97                         if ( strlen( inputline ) )
  98                         {
  99                                 Assert( i < MAX_NUM_SONGS );
 100                                 sscanf( inputline, "%s %s %s",
 101                                                 Songs[i].filename,
 102                                                 Songs[i].melodic_bank_file,
 103                                                 Songs[i].drum_bank_file );
 104                                 //printf( "%d. '%s' '%s' '%s'\n",i,Songs[i].filename,Songs[i].melodic_bank_file,Songs[i].drum_bank_file );
 105                                 i++;
 106                         }
 107                 }
 108                 Num_songs = i;
 109                 if (Num_songs <= SONG_FIRST_LEVEL_SONG)
 110                         Error("Must have at least %d songs",SONG_FIRST_LEVEL_SONG+1);
 111                 cfclose(fp);
 112         }
 113
 114         Songs_initialized = 1;
 115
 116         //      RBA Hook
 117         #if !defined(SHAREWARE) || ( defined(SHAREWARE) && defined(APPLE_DEMO) )
 118                 if (FindArg("-noredbook"))
 119                 {
 120                         Redbook_enabled = 0;
 121                 }
 122                 else    // use redbook
 123                 {
 124                         #ifndef __MSDOS__ // defined(WINDOWS) || defined(MACINTOSH)
 125                                 RBAInit();
 126                         #else
 127                                 RBAInit(toupper(CDROM_dir[0]) - 'A');
 128                         #endif
 129
 130                                 if (RBAEnabled())
 131                         {
 132                                 set_redbook_volume(Config_redbook_volume);
 133                                 RBARegisterCD();
 134                         }
 135                 }
 136                 //atexit(RBAStop);      // stop song on exit
 137         #endif  // endof ifndef SHAREWARE, ie ifdef SHAREWARE
 138 }
 139
 140 #define FADE_TIME (f1_0/2)
 141
 142 //stop the redbook, so we can read off the CD
 143 void songs_stop_redbook(void)
 144 {
 145         int old_volume = Config_redbook_volume*REDBOOK_VOLUME_SCALE/8;
 146         fix old_time = timer_get_fixed_seconds();
 147
 148         if (Redbook_playing) {          //fade out volume
 149                 int new_volume;
 150                 do {
 151                         fix t = timer_get_fixed_seconds();
 152
 153                         new_volume = fixmuldiv(old_volume,(FADE_TIME - (t-old_time)),FADE_TIME);
 154
 155                         if (new_volume < 0)
 156                                 new_volume = 0;
 157
 158                         RBASetVolume(new_volume);
 159
 160                 } while (new_volume > 0);
 161         }
 162
 163         //RBAStop();                                            // Stop CD, if playing
 164
 165         RBASetVolume(old_volume);       //restore volume
 166
 167         Redbook_playing = 0;
 168
 169 }
 170
 171 //stop any songs - midi or redbook - that are currently playing
 172 void songs_stop_all(void)
 173 {
 174         digi_stop_current_song();       // Stop midi song, if playing
 175
 176         songs_stop_redbook();                   // Stop CD, if playing
 177 }
 178
 179 int force_rb_register=0;
 180
 181 void reinit_redbook()
 182 {
 183         #ifndef __MSDOS__ // defined(WINDOWS) || defined(MACINTOSH)
 184                 RBAInit();
 185         #else
 186                 RBAInit(toupper(CDROM_dir[0]) - 'A');
 187         #endif
 188
 189         if (RBAEnabled())
 190         {
 191                 set_redbook_volume(Config_redbook_volume);
 192                 RBARegisterCD();
 193                 force_rb_register=0;
 194         }
 195 }
 196
 197
 198 //returns 1 if track started sucessfully
 199 //start at tracknum.  if keep_playing set, play to end of disc.  else
 200 //play only specified track
 201 int play_redbook_track(int tracknum,int keep_playing)
 202 {
 203         Redbook_playing = 0;
 204
 205         if (!RBAEnabled() && Redbook_enabled && !FindArg("-noredbook"))
 206                 reinit_redbook();
 207
 208         if (force_rb_register) {
 209                 RBARegisterCD();                        //get new track list for new CD
 210                 force_rb_register = 0;
 211         }
 212
 213         if (Redbook_enabled && RBAEnabled()) {
 214                 int num_tracks = RBAGetNumberOfTracks();
 215                 if (tracknum <= num_tracks)
 216                         if (RBAPlayTracks(tracknum,keep_playing?num_tracks:tracknum))  {
 217                                 Redbook_playing = tracknum;
 218                         }
 219         }
 220
 221         return (Redbook_playing != 0);
 222 }
 223
 224 #define REDBOOK_TITLE_TRACK                     2
 225 #define REDBOOK_CREDITS_TRACK                   3
 226 #define REDBOOK_FIRST_LEVEL_TRACK       (songs_haved2_cd()?4:1)
 227
 228 // songs_haved2_cd returns 1 if the descent 2 CD is in the drive and
 229 // 0 otherwise
 230
 231 int songs_haved2_cd()
 232 {
 233         char temp[128],cwd[128];
 234
 235         getcwd(cwd, 128);
 236
 237         strcpy(temp,CDROM_dir);
 238
 239         #ifndef MACINTOSH               //for PC, strip of trailing slash
 240         if (temp[strlen(temp)-1] == '\\')
 241                 temp[strlen(temp)-1] = 0;
 242         #endif
 243
 244         if ( !chdir(temp) ) {
 245                 chdir(cwd);
 246                 return 1;
 247         }
 248
 249         return 0;
 250 }
 251
 252
 253 void songs_play_song( int songnum, int repeat )
 254 {
 255         #ifndef SHAREWARE
 256         //Assert(songnum != SONG_ENDLEVEL && songnum != SONG_ENDGAME);  //not in full version
 257         #endif
 258
 259         if ( !Songs_initialized )
 260                 songs_init();
 261
 262         //stop any music already playing
 263
 264         songs_stop_all();
 265
 266         //do we want any of these to be redbook songs?
 267
 268         if (force_rb_register) {
 269                 RBARegisterCD();                        //get new track list for new CD
 270                 force_rb_register = 0;
 271         }
 272
 273         if (songnum == SONG_TITLE)
 274                 play_redbook_track(REDBOOK_TITLE_TRACK,0);
 275         else if (songnum == SONG_CREDITS)
 276                 play_redbook_track(REDBOOK_CREDITS_TRACK,0);
 277
 278         if (!Redbook_playing) {         //not playing redbook, so play midi
 279
 280                 #ifndef MACINTOSH
 281                         digi_play_midi_song( Songs[songnum].filename, Songs[songnum].melodic_bank_file, Songs[songnum].drum_bank_file, repeat );
 282                 #else
 283                         digi_play_midi_song(songnum, repeat);
 284                 #endif
 285         }
 286 }
 287
 288 int current_song_level;
 289
 290 void songs_play_level_song( int levelnum )
 291 {
 292         int songnum;
 293         int n_tracks;
 294
 295         Assert( levelnum != 0 );
 296
 297         if ( !Songs_initialized )
 298                 songs_init();
 299
 300         songs_stop_all();
 301
 302         current_song_level = levelnum;
 303
 304         songnum = (levelnum>0)?(levelnum-1):(-levelnum);
 305
 306         if (!RBAEnabled() && Redbook_enabled && !FindArg("-noredbook"))
 307                 reinit_redbook();
 308
 309         if (force_rb_register) {
 310                 RBARegisterCD();                        //get new track list for new CD
 311                 force_rb_register = 0;
 312         }
 313
 314         if (Redbook_enabled && RBAEnabled() && (n_tracks = RBAGetNumberOfTracks()) > 1) {
 315
 316                 //try to play redbook
 317
 318                 mprintf((0,"n_tracks = %d\n",n_tracks));
 319
 320                 play_redbook_track(REDBOOK_FIRST_LEVEL_TRACK + (songnum % (n_tracks-REDBOOK_FIRST_LEVEL_TRACK+1)),1);
 321         }
 322
 323         if (! Redbook_playing) {                        //not playing redbook, so play midi
 324
 325                 songnum = SONG_FIRST_LEVEL_SONG + (songnum % NumLevelSongs);
 326
 327                 #ifndef MACINTOSH
 328                         digi_play_midi_song( Songs[songnum].filename, Songs[songnum].melodic_bank_file, Songs[songnum].drum_bank_file, 1 );
 329                 #else
 330                         digi_play_midi_song( songnum, 1 );
 331                 #endif
 332
 333         }
 334 }
 335
 336 //this should be called regularly to check for redbook restart
 337 void songs_check_redbook_repeat()
 338 {
 339         static fix last_check_time;
 340         fix current_time;
 341
 342         if (!Redbook_playing || Config_redbook_volume==0) return;
 343
 344         current_time = timer_get_fixed_seconds();
 345         if (current_time < last_check_time || (current_time - last_check_time) >= F2_0) {
 346                 if (!RBAPeekPlayStatus()) {
 347                         stop_time();
 348                         // if title ends, start credit music
 349                         // if credits music ends, restart it
 350                         if (Redbook_playing == REDBOOK_TITLE_TRACK || Redbook_playing == REDBOOK_CREDITS_TRACK)
 351                                 play_redbook_track(REDBOOK_CREDITS_TRACK,0);
 352                         else {
 353                                 //songs_goto_next_song();
 354
 355                                 //new code plays all tracks to end of disk, so if disk has
 356                                 //stopped we must be at end.  So start again with level 1 song.
 357
 358                                 songs_play_level_song(1);
 359                         }
 360                         start_time();
 361                 }
 362                 last_check_time = current_time;
 363         }
 364 }
 365
 366 //goto the next level song
 367 void songs_goto_next_song()
 368 {
 369         if (Redbook_playing)            //get correct track
 370                 current_song_level = RBAGetTrackNum() - REDBOOK_FIRST_LEVEL_TRACK + 1;
 371
 372         songs_play_level_song(current_song_level+1);
 373
 374 }
 375
 376 //goto the previous level song
 377 void songs_goto_prev_song()
 378 {
 379         if (Redbook_playing)            //get correct track
 380                 current_song_level = RBAGetTrackNum() - REDBOOK_FIRST_LEVEL_TRACK + 1;
 381
 382         if (current_song_level > 1)
 383                 songs_play_level_song(current_song_level-1);
 384
 385 }
 386