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