audio.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #include "common.h"
   6
   7 #ifndef AUDIO_H
   8 #define AUDIO_H
   9
  10 #include "world.h"
  11
  12 VG_STATIC float audio_occlusion_current = 0.0f,
  13              k_audio_occlusion_rate  = 1.0f;
  14
  15 VG_STATIC int k_audio_debug_soundscape = 0;
  16
  17 audio_clip audio_board[] =
  18 {
  19    { .path="sound/skate_hpf.ogg" },
  20    { .path="sound/wheel.ogg" },
  21    { .path="sound/slide.ogg" },
  22    { .path="sound/grind_enter.ogg" },
  23    { .path="sound/grind_exit.ogg" },
  24    { .path="sound/grind_loop.ogg" },
  25    { .path="sound/woodslide.ogg" },
  26    { .path="sound/metalscrape.ogg" },
  27    { .path="sound/slidetap.ogg" }
  28 };
  29
  30 audio_clip audio_taps[] =
  31 {
  32    { .path="sound/tap0.ogg" },
  33    { .path="sound/tap1.ogg" },
  34    { .path="sound/tap2.ogg" },
  35    { .path="sound/tap3.ogg" }
  36 };
  37
  38 audio_clip audio_splash =
  39 { .path = "sound/splash.ogg" };
  40
  41 audio_clip audio_jumps[] = {
  42    { .path = "sound/jump0.ogg" },
  43    { .path = "sound/jump1.ogg" },
  44 };
  45
  46 audio_clip audio_footsteps[] = {
  47  {.path = "sound/step_concrete0.ogg" },
  48  {.path = "sound/step_concrete1.ogg" },
  49  {.path = "sound/step_concrete2.ogg" },
  50  {.path = "sound/step_concrete3.ogg" }
  51 };
  52
  53 audio_clip audio_footsteps_grass[] = {
  54  {.path = "sound/step_bush0.ogg" },
  55  {.path = "sound/step_bush1.ogg" },
  56  {.path = "sound/step_bush2.ogg" },
  57  {.path = "sound/step_bush3.ogg" },
  58  {.path = "sound/step_bush4.ogg" },
  59  {.path = "sound/step_bush5.ogg" }
  60 };
  61
  62 audio_clip audio_footsteps_wood[] = {
  63  {.path = "sound/step_wood0.ogg" },
  64  {.path = "sound/step_wood1.ogg" },
  65  {.path = "sound/step_wood2.ogg" },
  66  {.path = "sound/step_wood3.ogg" },
  67  {.path = "sound/step_wood4.ogg" },
  68  {.path = "sound/step_wood5.ogg" }
  69 };
  70
  71 audio_clip audio_lands[] = {
  72    { .path = "sound/land0.ogg" },
  73    { .path = "sound/land1.ogg" },
  74    { .path = "sound/land2.ogg" },
  75    { .path = "sound/landsk0.ogg" },
  76    { .path = "sound/landsk1.ogg" },
  77    { .path = "sound/onto.ogg" },
  78    { .path = "sound/outo.ogg" },
  79 };
  80
  81 audio_clip audio_water[] = {
  82    { .path = "sound/wave0.ogg" },
  83    { .path = "sound/wave1.ogg" },
  84    { .path = "sound/wave2.ogg" },
  85    { .path = "sound/wave3.ogg" },
  86    { .path = "sound/wave4.ogg" },
  87    { .path = "sound/wave5.ogg" }
  88 };
  89
  90 audio_clip audio_grass[] = {
  91    { .path = "sound/grass0.ogg" },
  92    { .path = "sound/grass1.ogg" },
  93    { .path = "sound/grass2.ogg" },
  94    { .path = "sound/grass3.ogg" },
  95 };
  96
  97 audio_clip audio_ambience[] =
  98 {
  99    { .path="sound/town_generic.ogg" }
 100 };
 101
 102 audio_clip audio_gate_pass = {
 103    .path = "sound/gate_pass.ogg"
 104 };
 105
 106 audio_clip audio_gate_lap = {
 107    .path = "sound/gate_lap.ogg"
 108 };
 109
 110 audio_clip audio_gate_ambient = {
 111 .path = "sound/gate_ambient.ogg"
 112 };
 113
 114 #if 0
 115 audio_player ambient_player =
 116 {
 117    .name = "Ambience"
 118 };
 119
 120 audio_player audio_rewind_player =
 121 {
 122    .name = "Rewind"
 123 };
 124 #endif
 125
 126 audio_clip audio_rewind[] = {
 127 { .path = "sound/rewind_start.ogg" },
 128 { .path = "sound/rewind_end_1.5.ogg" },
 129 { .path = "sound/rewind_end_2.5.ogg" },
 130 { .path = "sound/rewind_end_6.5.ogg" },
 131 { .path = "sound/rewind_clack.ogg" },
 132 };
 133
 134 audio_clip audio_ui[] = {
 135    { .path = "sound/ui_click.ogg" },
 136    { .path = "sound/ui_ding.ogg" },
 137 };
 138
 139 audio_clip audio_music[] = {
 140    { .path = "sound/song.ogg", .flags = k_audio_format_vorbis },
 141    { .path = "sound/skate.ogg", .flags = k_audio_format_vorbis },
 142 };
 143
 144 #if 0
 145 audio_player ambient_sprites[4] =
 146 {
 147    { .name = "Ambient Sprites 0" },
 148    { .name = "Ambient Sprites 1" },
 149    { .name = "Ambient Sprites 2" },
 150    { .name = "Ambient Sprites 3" },
 151 };
 152
 153 audio_player audio_player0 =
 154 {
 155    .name = "Player0",
 156 };
 157
 158 audio_player audio_player1 =
 159 {
 160    .name = "Player1",
 161 };
 162
 163 audio_player audio_player2 =
 164 {
 165    .name = "Player2",
 166 };
 167
 168 audio_player audio_player3 =
 169 {
 170    .name = "Player3",
 171 };
 172
 173 audio_player audio_player4 =
 174 {
 175    .name = "Player4",
 176 };
 177
 178 audio_player audio_player_extra =
 179 {
 180    .name = "PlayerInst"
 181 };
 182
 183 audio_player audio_player_gate =
 184 {
 185    .name = "Gate"
 186 };
 187 #endif
 188
 189 VG_STATIC void audio_init(void)
 190 {
 191 #if 0
 192    audio_player_init( &audio_player0 );
 193    audio_player_init( &audio_player1 );
 194    audio_player_init( &audio_player2 );
 195    audio_player_init( &audio_player3 );
 196    audio_player_init( &audio_player4 );
 197    audio_player_init( &audio_player_gate );
 198    audio_player_init( &ambient_player );
 199    audio_player_init( &ambient_sprites[0] );
 200    audio_player_init( &ambient_sprites[1] );
 201    audio_player_init( &ambient_sprites[2] );
 202    audio_player_init( &ambient_sprites[3] );
 203    audio_player_init( &audio_player_extra );
 204    audio_player_init( &audio_rewind_player );
 205 #endif
 206
 207    audio_clip_loadn( audio_board, vg_list_size(audio_board), NULL );
 208    audio_clip_loadn( audio_taps, vg_list_size(audio_taps), NULL );
 209    audio_clip_loadn( audio_ambience, vg_list_size(audio_ambience), NULL );
 210    audio_clip_loadn( &audio_splash, 1, NULL );
 211    audio_clip_loadn( &audio_gate_pass, 1, NULL );
 212    audio_clip_loadn( &audio_gate_lap, 1, NULL );
 213    audio_clip_loadn( &audio_gate_ambient, 1, NULL );
 214    audio_clip_loadn( audio_music, vg_list_size(audio_music), NULL );
 215
 216    audio_clip_loadn( audio_jumps, vg_list_size(audio_jumps), NULL );
 217    audio_clip_loadn( audio_lands, vg_list_size(audio_lands), NULL );
 218    audio_clip_loadn( audio_water, vg_list_size(audio_water), NULL );
 219    audio_clip_loadn( audio_grass, vg_list_size(audio_grass), NULL );
 220    audio_clip_loadn( audio_footsteps, vg_list_size(audio_footsteps), NULL );
 221    audio_clip_loadn( audio_footsteps_grass,
 222                      vg_list_size(audio_footsteps_grass), NULL );
 223    audio_clip_loadn( audio_footsteps_wood,
 224                      vg_list_size(audio_footsteps_wood), NULL );
 225    audio_clip_loadn( audio_rewind, vg_list_size(audio_rewind), NULL );
 226    audio_clip_loadn( audio_ui, vg_list_size(audio_ui), NULL );
 227
 228 #if 0
 229    audio_lock();
 230    u32 flags = AUDIO_FLAG_LOOP|AUDIO_FLAG_SPACIAL_3D;
 231
 232    audio_player_set_flags( &audio_player0, flags );
 233    audio_player_set_flags( &audio_player1, flags );
 234    audio_player_set_flags( &audio_player2, flags );
 235    audio_player_set_flags( &audio_player4, flags );
 236    audio_player_set_flags( &audio_player_gate, flags );
 237    audio_player_set_flags( &audio_player3, AUDIO_FLAG_LOOP );
 238    audio_player_set_flags( &ambient_player, AUDIO_FLAG_LOOP );
 239    audio_player_set_flags( &ambient_sprites[0], AUDIO_FLAG_SPACIAL_3D );
 240    audio_player_set_flags( &ambient_sprites[1], AUDIO_FLAG_SPACIAL_3D );
 241    audio_player_set_flags( &ambient_sprites[2], AUDIO_FLAG_SPACIAL_3D );
 242    audio_player_set_flags( &ambient_sprites[3], AUDIO_FLAG_SPACIAL_3D );
 243
 244    audio_player_set_vol( &ambient_player, 1.0f );
 245    audio_player_set_vol( &audio_player_gate, 0.0f );
 246    audio_player_set_vol( &audio_player_extra, 1.0f );
 247    audio_player_set_vol( &audio_rewind_player, 0.2f );
 248    audio_player_set_flags( &audio_rewind_player, 0x00 );
 249
 250    audio_player_playclip( &audio_player0, &audio_board[0] );
 251    audio_player_playclip( &audio_player1, &audio_board[1] );
 252    audio_player_playclip( &audio_player2, &audio_board[2] );
 253    audio_player_playclip( &audio_player3, &audio_board[3] );
 254    audio_player_playclip( &audio_player4, &audio_board[4] );
 255    audio_player_playclip( &ambient_player, &audio_ambience[0] );
 256    audio_player_playclip( &audio_player_gate, &audio_gate_ambient );
 257
 258    audio_unlock();
 259 #endif
 260
 261    vg_var_push( (struct vg_var){
 262       .name = "aud_debug_soundscape",
 263       .data = &k_audio_debug_soundscape,
 264       .data_type = k_var_dtype_i32,
 265       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 266       .persistent = 1
 267    });
 268
 269    vg_var_push( (struct vg_var){
 270       .name = "aud_occlusion_rate",
 271       .data = &k_audio_occlusion_rate,
 272       .data_type = k_var_dtype_f32,
 273       .opt_f32 = { .clamp = 0 },
 274       .persistent = 1
 275    });
 276
 277    audio_lock();
 278    audio_set_lfo_wave( 0, k_lfo_polynomial_bipolar, 80.0f );
 279    audio_set_lfo_frequency( 0, 20.0f );
 280    audio_unlock();
 281 }
 282
 283 VG_STATIC void audio_update(void)
 284 {
 285 #if 0
 286    static u32 flapflop = 0x00;
 287    static audio_channel *channel = NULL;
 288
 289    u32 next = floorf( vg.time / 0.1f );
 290
 291    if( flapflop != next )
 292    {
 293       flapflop = next;
 294
 295       audio_lock();
 296       channel = audio_channel_crossfade( channel,
 297                                          &audio_music[ next & 0x1 ], 0.05f,
 298                                          AUDIO_FLAG_LOOP|AUDIO_FLAG_SPACIAL_3D
 299             );
 300       channel = audio_channel_set_spacial( channel,
 301                                            (v3f){ -22.3f, 60.1f, -52.7f },
 302                                            50.0f );
 303
 304       audio_channel_sidechain_lfo( channel, 0, 1.0f );
 305       audio_unlock();
 306    }
 307 #endif
 308 }
 309
 310 VG_STATIC void audio_free(void)
 311 {
 312    /* TODO! */
 313    vg_warn( "UNIMPLEMENTED: audio_free()\n" );
 314 }
 315
 316 VG_STATIC void audio_sample_occlusion( v3f origin )
 317 {
 318    float d = 0.0f,
 319          sample_dist = 880.0f;
 320
 321    int sample_count = 8;
 322
 323    int lv = 0;
 324    v3f last;
 325    v3_zero(last);
 326
 327    world_instance *world = get_active_world();
 328
 329    for( int i=0; i<sample_count; i++ )
 330    {
 331       v3f dir;
 332       vg_rand_dir( dir );
 333
 334       ray_hit contact;
 335       contact.dist = 15.0f;
 336
 337       if( ray_world( world, origin, dir, &contact ) )
 338       {
 339          d += contact.dist;
 340
 341 #if 0
 342          vg_line( origin, contact.pos, 0xff0000ff );
 343          vg_line_pt3( contact.pos, 0.1f, 0xff0000ff );
 344
 345          if( lv )
 346             vg_line( contact.pos, last, 0xffffffff );
 347 #endif
 348
 349          v3_copy( contact.pos, last );
 350          lv = 1;
 351       }
 352       else
 353       {
 354          v3f p1;
 355          v3_muladds( origin, dir, sample_dist, p1 );
 356
 357 #if 0
 358          vg_line( origin, p1, 0xffcccccc );
 359 #endif
 360
 361          d += sample_dist;
 362          lv = 0;
 363       }
 364
 365    }
 366
 367    float occlusion = 1.0f - (d * (1.0f/(sample_dist*(float)sample_count))),
 368          rate = VG_TIMESTEP_FIXED * k_audio_occlusion_rate,
 369          target = powf( vg_maxf(occlusion,0.0f), 6.0f );
 370    audio_occlusion_current = vg_lerpf( audio_occlusion_current, target, rate );
 371 }
 372
 373 enum audio_sprite_type
 374 {
 375    k_audio_sprite_type_none,
 376    k_audio_sprite_type_grass,
 377    k_audio_sprite_type_water
 378 };
 379
 380 /*
 381  * Trace out a random point, near the player to try and determine water areas
 382  */
 383 VG_STATIC enum audio_sprite_type audio_sample_sprite_random( v3f origin,
 384                                                              v3f output )
 385 {
 386    v3f chance = { (vg_randf()-0.5f) * 30.0f,
 387                   8.0f,
 388                   (vg_randf()-0.5f) * 30.0f };
 389
 390    v3f pos;
 391    v3_add( chance, origin, pos );
 392
 393    ray_hit contact;
 394    contact.dist = vg_minf( 16.0f, pos[1] );
 395
 396    world_instance *world = get_active_world();
 397
 398    if( ray_world( world, pos, (v3f){0.0f,-1.0f,0.0f}, &contact ) ){
 399       struct world_surface *mat = ray_hit_surface( world, &contact );
 400
 401       if( mat->info.surface_prop == k_surface_prop_grass){
 402          v3_copy( contact.pos, output );
 403          return k_audio_sprite_type_grass;
 404       }
 405       else{
 406 #if 0
 407          vg_line( pos, contact.pos, 0xff0000ff );
 408          vg_line_pt3( contact.pos, 0.3f, 0xff0000ff );
 409 #endif
 410          return k_audio_sprite_type_none;
 411       }
 412    }
 413
 414    output[0] = pos[0];
 415    output[1] = 0.0f;
 416    output[2] = pos[2];
 417
 418    if( world->water.enabled )
 419       return k_audio_sprite_type_water;
 420    else
 421       return k_audio_sprite_type_none;
 422 }
 423
 424 VG_STATIC void audio_debug_soundscapes(void)
 425 {
 426    if( !k_audio_debug_soundscape ) return;
 427
 428    char buf[64];
 429    snprintf( buf, 31, "occlusion: %.5f", audio_occlusion_current );
 430
 431    vg_uictx.cursor[0] = 450;
 432    vg_uictx.cursor[1] = 10;
 433    vg_uictx.cursor[2] = audio_occlusion_current * 200.0f;
 434    vg_uictx.cursor[3] = 20;
 435
 436    ui_fill_rect( vg_uictx.cursor, 0x55cccccc );
 437    ui_text( vg_uictx.cursor, buf, 1, 0 );
 438 }
 439
 440 #endif /* AUDIO_H */