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.ogg" },
  20    { .path="sound/wheel.ogg" },
  21    { .path="sound/slide.ogg" },
  22    { .path="sound/reverb.ogg" }
  23 };
  24
  25 audio_clip audio_splash =
  26 { .path = "sound/splash.ogg" };
  27
  28 audio_clip audio_jumps[] = {
  29    { .path = "sound/jump0.ogg" },
  30    { .path = "sound/jump1.ogg" },
  31 };
  32
  33 audio_clip audio_footsteps[] = {
  34  {.path = "sound/step_concrete0.ogg" },
  35  {.path = "sound/step_concrete1.ogg" },
  36  {.path = "sound/step_concrete2.ogg" },
  37  {.path = "sound/step_concrete3.ogg" }
  38 };
  39
  40 audio_clip audio_footsteps_grass[] = {
  41  {.path = "sound/step_bush0.ogg" },
  42  {.path = "sound/step_bush1.ogg" },
  43  {.path = "sound/step_bush2.ogg" },
  44  {.path = "sound/step_bush3.ogg" },
  45  {.path = "sound/step_bush4.ogg" },
  46  {.path = "sound/step_bush5.ogg" }
  47 };
  48
  49 audio_clip audio_footsteps_wood[] = {
  50  {.path = "sound/step_wood0.ogg" },
  51  {.path = "sound/step_wood1.ogg" },
  52  {.path = "sound/step_wood2.ogg" },
  53  {.path = "sound/step_wood3.ogg" },
  54  {.path = "sound/step_wood4.ogg" },
  55  {.path = "sound/step_wood5.ogg" }
  56 };
  57
  58 audio_clip audio_lands[] = {
  59    { .path = "sound/land0.ogg" },
  60    { .path = "sound/land1.ogg" },
  61    { .path = "sound/land2.ogg" },
  62    { .path = "sound/landsk0.ogg" },
  63    { .path = "sound/landsk1.ogg" },
  64    { .path = "sound/onto.ogg" },
  65    { .path = "sound/outo.ogg" },
  66 };
  67
  68 audio_clip audio_water[] = {
  69    { .path = "sound/wave0.ogg" },
  70    { .path = "sound/wave1.ogg" },
  71    { .path = "sound/wave2.ogg" },
  72    { .path = "sound/wave3.ogg" },
  73    { .path = "sound/wave4.ogg" },
  74    { .path = "sound/wave5.ogg" }
  75 };
  76
  77 audio_clip audio_grass[] = {
  78    { .path = "sound/grass0.ogg" },
  79    { .path = "sound/grass1.ogg" },
  80    { .path = "sound/grass2.ogg" },
  81    { .path = "sound/grass3.ogg" },
  82 };
  83
  84 audio_clip audio_ambience[] =
  85 {
  86    { .path="sound/town_generic.ogg" }
  87 };
  88
  89 audio_clip audio_gate_pass = {
  90    .path = "sound/gate_pass.ogg"
  91 };
  92
  93 audio_clip audio_gate_lap = {
  94    .path = "sound/gate_lap.ogg"
  95 };
  96
  97 audio_clip audio_gate_ambient = {
  98 .path = "sound/gate_ambient.ogg"
  99 };
 100
 101 audio_player ambient_player =
 102 {
 103    .name = "Ambience"
 104 };
 105
 106 audio_player audio_rewind_player =
 107 {
 108    .name = "Rewind"
 109 };
 110
 111 audio_clip audio_rewind[] = {
 112 { .path = "sound/rewind_start.ogg" },
 113 { .path = "sound/rewind_end_1.5.ogg" },
 114 { .path = "sound/rewind_end_2.5.ogg" },
 115 { .path = "sound/rewind_end_6.5.ogg" },
 116 { .path = "sound/rewind_clack.ogg" },
 117 };
 118
 119 audio_clip audio_ui[] = {
 120    { .path = "sound/ui_click.ogg" },
 121    { .path = "sound/ui_ding.ogg" },
 122 };
 123
 124 audio_player ambient_sprites[4] =
 125 {
 126    { .name = "Ambient Sprites 0" },
 127    { .name = "Ambient Sprites 1" },
 128    { .name = "Ambient Sprites 2" },
 129    { .name = "Ambient Sprites 3" },
 130 };
 131
 132 audio_player audio_player0 =
 133 {
 134    .name = "Player0",
 135 };
 136
 137 audio_player audio_player1 =
 138 {
 139    .name = "Player1",
 140 };
 141
 142 audio_player audio_player2 =
 143 {
 144    .name = "Player2",
 145 };
 146
 147 audio_player audio_player3 =
 148 {
 149    .name = "Player3",
 150 };
 151
 152 audio_player audio_player_extra =
 153 {
 154    .name = "PlayerInst"
 155 };
 156
 157 audio_player audio_player_gate =
 158 {
 159    .name = "Gate"
 160 };
 161
 162 VG_STATIC void audio_init(void)
 163 {
 164    audio_player_init( &audio_player0 );
 165    audio_player_init( &audio_player1 );
 166    audio_player_init( &audio_player2 );
 167    audio_player_init( &audio_player3 );
 168    audio_player_init( &audio_player_gate );
 169    audio_player_init( &ambient_player );
 170    audio_player_init( &ambient_sprites[0] );
 171    audio_player_init( &ambient_sprites[1] );
 172    audio_player_init( &ambient_sprites[2] );
 173    audio_player_init( &ambient_sprites[3] );
 174    audio_player_init( &audio_player_extra );
 175    audio_player_init( &audio_rewind_player );
 176
 177    audio_clip_loadn( audio_board, vg_list_size(audio_board), NULL );
 178    audio_clip_loadn( audio_ambience, vg_list_size(audio_ambience), NULL );
 179    audio_clip_loadn( &audio_splash, 1, NULL );
 180    audio_clip_loadn( &audio_gate_pass, 1, NULL );
 181    audio_clip_loadn( &audio_gate_lap, 1, NULL );
 182    audio_clip_loadn( &audio_gate_ambient, 1, NULL );
 183    audio_clip_loadn( audio_jumps, vg_list_size(audio_jumps), NULL );
 184    audio_clip_loadn( audio_lands, vg_list_size(audio_lands), NULL );
 185    audio_clip_loadn( audio_water, vg_list_size(audio_water), NULL );
 186    audio_clip_loadn( audio_grass, vg_list_size(audio_grass), NULL );
 187    audio_clip_loadn( audio_footsteps, vg_list_size(audio_footsteps), NULL );
 188    audio_clip_loadn( audio_footsteps_grass,
 189                      vg_list_size(audio_footsteps_grass), NULL );
 190    audio_clip_loadn( audio_footsteps_wood,
 191                      vg_list_size(audio_footsteps_wood), NULL );
 192    audio_clip_loadn( audio_rewind, vg_list_size(audio_rewind), NULL );
 193    audio_clip_loadn( audio_ui, vg_list_size(audio_ui), NULL );
 194
 195    audio_lock();
 196    u32 flags = AUDIO_FLAG_LOOP|AUDIO_FLAG_SPACIAL_3D;
 197
 198    audio_player_set_flags( &audio_player0, flags );
 199    audio_player_set_flags( &audio_player1, flags );
 200    audio_player_set_flags( &audio_player2, flags );
 201    audio_player_set_flags( &audio_player_gate, flags );
 202    audio_player_set_flags( &audio_player3, AUDIO_FLAG_LOOP );
 203    audio_player_set_flags( &ambient_player, AUDIO_FLAG_LOOP );
 204    audio_player_set_flags( &ambient_sprites[0], AUDIO_FLAG_SPACIAL_3D );
 205    audio_player_set_flags( &ambient_sprites[1], AUDIO_FLAG_SPACIAL_3D );
 206    audio_player_set_flags( &ambient_sprites[2], AUDIO_FLAG_SPACIAL_3D );
 207    audio_player_set_flags( &ambient_sprites[3], AUDIO_FLAG_SPACIAL_3D );
 208    audio_player_set_vol( &ambient_player, 1.0f );
 209    audio_player_set_vol( &audio_player_gate, 0.0f );
 210    audio_player_set_vol( &audio_player_extra, 1.0f );
 211    audio_player_set_vol( &audio_rewind_player, 0.2f );
 212    audio_player_set_flags( &audio_rewind_player, 0x00 );
 213
 214    audio_player_playclip( &audio_player0, &audio_board[0] );
 215    audio_player_playclip( &audio_player1, &audio_board[1] );
 216    audio_player_playclip( &audio_player2, &audio_board[2] );
 217    audio_player_playclip( &audio_player3, &audio_board[3] );
 218    audio_player_playclip( &ambient_player, &audio_ambience[0] );
 219    audio_player_playclip( &audio_player_gate, &audio_gate_ambient );
 220
 221    audio_unlock();
 222
 223    vg_convar_push( (struct vg_convar){
 224       .name = "aud_debug_soundscape",
 225       .data = &k_audio_debug_soundscape,
 226       .data_type = k_convar_dtype_i32,
 227       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 228       .persistent = 1
 229    });
 230
 231    vg_convar_push( (struct vg_convar){
 232       .name = "aud_occlusion_rate",
 233       .data = &k_audio_occlusion_rate,
 234       .data_type = k_convar_dtype_f32,
 235       .opt_f32 = { .clamp = 0 },
 236       .persistent = 1
 237    });
 238 }
 239
 240 VG_STATIC void audio_free(void*_)
 241 {
 242    /* TODO! */
 243    vg_warn( "UNIMPLEMENTED: audio_free()\n" );
 244 }
 245
 246 VG_STATIC void audio_sample_occlusion( v3f origin )
 247 {
 248    float d = 0.0f,
 249          sample_dist = 880.0f;
 250
 251    int sample_count = 8;
 252
 253    int lv = 0;
 254    v3f last;
 255    v3_zero(last);
 256
 257    for( int i=0; i<sample_count; i++ )
 258    {
 259       v3f dir;
 260       vg_rand_dir( dir );
 261
 262       ray_hit contact;
 263       contact.dist = 15.0f;
 264
 265       if( ray_world( origin, dir, &contact ) )
 266       {
 267          d += contact.dist;
 268
 269 #if 0
 270          vg_line( origin, contact.pos, 0xff0000ff );
 271          vg_line_pt3( contact.pos, 0.1f, 0xff0000ff );
 272
 273          if( lv )
 274             vg_line( contact.pos, last, 0xffffffff );
 275 #endif
 276
 277          v3_copy( contact.pos, last );
 278          lv = 1;
 279       }
 280       else
 281       {
 282          v3f p1;
 283          v3_muladds( origin, dir, sample_dist, p1 );
 284
 285 #if 0
 286          vg_line( origin, p1, 0xffcccccc );
 287 #endif
 288
 289          d += sample_dist;
 290          lv = 0;
 291       }
 292
 293    }
 294
 295    float occlusion = 1.0f - (d * (1.0f/(sample_dist*(float)sample_count))),
 296          rate = VG_TIMESTEP_FIXED * k_audio_occlusion_rate,
 297          target = powf( occlusion, 6.0f );
 298    audio_occlusion_current = vg_lerpf( audio_occlusion_current, target, rate );
 299 }
 300
 301 enum audio_sprite_type
 302 {
 303    k_audio_sprite_type_none,
 304    k_audio_sprite_type_grass,
 305    k_audio_sprite_type_water
 306 };
 307
 308 /*
 309  * Trace out a random point, near the player to try and determine water areas
 310  */
 311 VG_STATIC enum audio_sprite_type audio_sample_sprite_random( v3f origin,
 312                                                              v3f output )
 313 {
 314    v3f chance = { (vg_randf()-0.5f) * 30.0f,
 315                   8.0f,
 316                   (vg_randf()-0.5f) * 30.0f };
 317
 318    v3f pos;
 319    v3_add( chance, origin, pos );
 320
 321    ray_hit contact;
 322    contact.dist = vg_minf( 16.0f, pos[1] );
 323
 324
 325    if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &contact ) )
 326    {
 327       struct world_material *mat = ray_hit_material( &contact );
 328
 329       if( mat->info.surface_prop == k_surface_prop_grass)
 330       {
 331          v3_copy( contact.pos, output );
 332          return k_audio_sprite_type_grass;
 333       }
 334       else
 335       {
 336 #if 0
 337          vg_line( pos, contact.pos, 0xff0000ff );
 338          vg_line_pt3( contact.pos, 0.3f, 0xff0000ff );
 339 #endif
 340          return k_audio_sprite_type_none;
 341       }
 342    }
 343
 344    output[0] = pos[0];
 345    output[1] = 0.0f;
 346    output[2] = pos[2];
 347
 348    if( world.water.enabled )
 349       return k_audio_sprite_type_water;
 350    else
 351       return k_audio_sprite_type_none;
 352 }
 353
 354 VG_STATIC void audio_debug_soundscapes(void)
 355 {
 356    if( !k_audio_debug_soundscape ) return;
 357
 358    char buf[64];
 359    snprintf( buf, 31, "occlusion: %.5f", audio_occlusion_current );
 360
 361    vg_uictx.cursor[0] = 450;
 362    vg_uictx.cursor[1] = 10;
 363    vg_uictx.cursor[2] = audio_occlusion_current * 200.0f;
 364    vg_uictx.cursor[3] = 20;
 365
 366    ui_fill_rect( vg_uictx.cursor, 0x55cccccc );
 367    ui_text( vg_uictx.cursor, buf, 1, 0 );
 368 }
 369
 370 #endif /* AUDIO_H */