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    { .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 audio_player ambient_player =
 105 {
 106    .name = "Ambience"
 107 };
 108
 109 audio_player audio_rewind_player =
 110 {
 111    .name = "Rewind"
 112 };
 113
 114 audio_clip audio_rewind[] = {
 115 { .path = "sound/rewind_start.ogg" },
 116 { .path = "sound/rewind_end_1.5.ogg" },
 117 { .path = "sound/rewind_end_2.5.ogg" },
 118 { .path = "sound/rewind_end_6.5.ogg" },
 119 { .path = "sound/rewind_clack.ogg" },
 120 };
 121
 122 audio_clip audio_ui[] = {
 123    { .path = "sound/ui_click.ogg" },
 124    { .path = "sound/ui_ding.ogg" },
 125 };
 126
 127 audio_player ambient_sprites[4] =
 128 {
 129    { .name = "Ambient Sprites 0" },
 130    { .name = "Ambient Sprites 1" },
 131    { .name = "Ambient Sprites 2" },
 132    { .name = "Ambient Sprites 3" },
 133 };
 134
 135 audio_player audio_player0 =
 136 {
 137    .name = "Player0",
 138 };
 139
 140 audio_player audio_player1 =
 141 {
 142    .name = "Player1",
 143 };
 144
 145 audio_player audio_player2 =
 146 {
 147    .name = "Player2",
 148 };
 149
 150 audio_player audio_player3 =
 151 {
 152    .name = "Player3",
 153 };
 154
 155 audio_player audio_player4 =
 156 {
 157    .name = "Player4",
 158 };
 159
 160 audio_player audio_player_extra =
 161 {
 162    .name = "PlayerInst"
 163 };
 164
 165 audio_player audio_player_gate =
 166 {
 167    .name = "Gate"
 168 };
 169
 170 VG_STATIC void audio_init(void)
 171 {
 172    audio_player_init( &audio_player0 );
 173    audio_player_init( &audio_player1 );
 174    audio_player_init( &audio_player2 );
 175    audio_player_init( &audio_player3 );
 176    audio_player_init( &audio_player4 );
 177    audio_player_init( &audio_player_gate );
 178    audio_player_init( &ambient_player );
 179    audio_player_init( &ambient_sprites[0] );
 180    audio_player_init( &ambient_sprites[1] );
 181    audio_player_init( &ambient_sprites[2] );
 182    audio_player_init( &ambient_sprites[3] );
 183    audio_player_init( &audio_player_extra );
 184    audio_player_init( &audio_rewind_player );
 185
 186    audio_clip_loadn( audio_board, vg_list_size(audio_board), NULL );
 187    audio_clip_loadn( audio_ambience, vg_list_size(audio_ambience), NULL );
 188    audio_clip_loadn( &audio_splash, 1, NULL );
 189    audio_clip_loadn( &audio_gate_pass, 1, NULL );
 190    audio_clip_loadn( &audio_gate_lap, 1, NULL );
 191    audio_clip_loadn( &audio_gate_ambient, 1, NULL );
 192    audio_clip_loadn( audio_jumps, vg_list_size(audio_jumps), NULL );
 193    audio_clip_loadn( audio_lands, vg_list_size(audio_lands), NULL );
 194    audio_clip_loadn( audio_water, vg_list_size(audio_water), NULL );
 195    audio_clip_loadn( audio_grass, vg_list_size(audio_grass), NULL );
 196    audio_clip_loadn( audio_footsteps, vg_list_size(audio_footsteps), NULL );
 197    audio_clip_loadn( audio_footsteps_grass,
 198                      vg_list_size(audio_footsteps_grass), NULL );
 199    audio_clip_loadn( audio_footsteps_wood,
 200                      vg_list_size(audio_footsteps_wood), NULL );
 201    audio_clip_loadn( audio_rewind, vg_list_size(audio_rewind), NULL );
 202    audio_clip_loadn( audio_ui, vg_list_size(audio_ui), NULL );
 203
 204    audio_lock();
 205    u32 flags = AUDIO_FLAG_LOOP|AUDIO_FLAG_SPACIAL_3D;
 206
 207    audio_player_set_flags( &audio_player0, flags );
 208    audio_player_set_flags( &audio_player1, flags );
 209    audio_player_set_flags( &audio_player2, flags );
 210    audio_player_set_flags( &audio_player4, flags );
 211    audio_player_set_flags( &audio_player_gate, flags );
 212    audio_player_set_flags( &audio_player3, AUDIO_FLAG_LOOP );
 213    audio_player_set_flags( &ambient_player, AUDIO_FLAG_LOOP );
 214    audio_player_set_flags( &ambient_sprites[0], AUDIO_FLAG_SPACIAL_3D );
 215    audio_player_set_flags( &ambient_sprites[1], AUDIO_FLAG_SPACIAL_3D );
 216    audio_player_set_flags( &ambient_sprites[2], AUDIO_FLAG_SPACIAL_3D );
 217    audio_player_set_flags( &ambient_sprites[3], AUDIO_FLAG_SPACIAL_3D );
 218    audio_player_set_vol( &ambient_player, 1.0f );
 219    audio_player_set_vol( &audio_player_gate, 0.0f );
 220    audio_player_set_vol( &audio_player_extra, 1.0f );
 221    audio_player_set_vol( &audio_rewind_player, 0.2f );
 222    audio_player_set_flags( &audio_rewind_player, 0x00 );
 223
 224    audio_player_playclip( &audio_player0, &audio_board[0] );
 225    audio_player_playclip( &audio_player1, &audio_board[1] );
 226    audio_player_playclip( &audio_player2, &audio_board[2] );
 227    audio_player_playclip( &audio_player3, &audio_board[3] );
 228    audio_player_playclip( &audio_player4, &audio_board[4] );
 229    audio_player_playclip( &ambient_player, &audio_ambience[0] );
 230    audio_player_playclip( &audio_player_gate, &audio_gate_ambient );
 231
 232    audio_unlock();
 233
 234    vg_convar_push( (struct vg_convar){
 235       .name = "aud_debug_soundscape",
 236       .data = &k_audio_debug_soundscape,
 237       .data_type = k_convar_dtype_i32,
 238       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 239       .persistent = 1
 240    });
 241
 242    vg_convar_push( (struct vg_convar){
 243       .name = "aud_occlusion_rate",
 244       .data = &k_audio_occlusion_rate,
 245       .data_type = k_convar_dtype_f32,
 246       .opt_f32 = { .clamp = 0 },
 247       .persistent = 1
 248    });
 249 }
 250
 251 VG_STATIC void audio_free(void)
 252 {
 253    /* TODO! */
 254    vg_warn( "UNIMPLEMENTED: audio_free()\n" );
 255 }
 256
 257 VG_STATIC void audio_sample_occlusion( v3f origin )
 258 {
 259    float d = 0.0f,
 260          sample_dist = 880.0f;
 261
 262    int sample_count = 8;
 263
 264    int lv = 0;
 265    v3f last;
 266    v3_zero(last);
 267
 268    for( int i=0; i<sample_count; i++ )
 269    {
 270       v3f dir;
 271       vg_rand_dir( dir );
 272
 273       ray_hit contact;
 274       contact.dist = 15.0f;
 275
 276       if( ray_world( origin, dir, &contact ) )
 277       {
 278          d += contact.dist;
 279
 280 #if 0
 281          vg_line( origin, contact.pos, 0xff0000ff );
 282          vg_line_pt3( contact.pos, 0.1f, 0xff0000ff );
 283
 284          if( lv )
 285             vg_line( contact.pos, last, 0xffffffff );
 286 #endif
 287
 288          v3_copy( contact.pos, last );
 289          lv = 1;
 290       }
 291       else
 292       {
 293          v3f p1;
 294          v3_muladds( origin, dir, sample_dist, p1 );
 295
 296 #if 0
 297          vg_line( origin, p1, 0xffcccccc );
 298 #endif
 299
 300          d += sample_dist;
 301          lv = 0;
 302       }
 303
 304    }
 305
 306    float occlusion = 1.0f - (d * (1.0f/(sample_dist*(float)sample_count))),
 307          rate = VG_TIMESTEP_FIXED * k_audio_occlusion_rate,
 308          target = powf( occlusion, 6.0f );
 309    audio_occlusion_current = vg_lerpf( audio_occlusion_current, target, rate );
 310 }
 311
 312 enum audio_sprite_type
 313 {
 314    k_audio_sprite_type_none,
 315    k_audio_sprite_type_grass,
 316    k_audio_sprite_type_water
 317 };
 318
 319 /*
 320  * Trace out a random point, near the player to try and determine water areas
 321  */
 322 VG_STATIC enum audio_sprite_type audio_sample_sprite_random( v3f origin,
 323                                                              v3f output )
 324 {
 325    v3f chance = { (vg_randf()-0.5f) * 30.0f,
 326                   8.0f,
 327                   (vg_randf()-0.5f) * 30.0f };
 328
 329    v3f pos;
 330    v3_add( chance, origin, pos );
 331
 332    ray_hit contact;
 333    contact.dist = vg_minf( 16.0f, pos[1] );
 334
 335
 336    if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &contact ) )
 337    {
 338       struct world_material *mat = ray_hit_material( &contact );
 339
 340       if( mat->info.surface_prop == k_surface_prop_grass)
 341       {
 342          v3_copy( contact.pos, output );
 343          return k_audio_sprite_type_grass;
 344       }
 345       else
 346       {
 347 #if 0
 348          vg_line( pos, contact.pos, 0xff0000ff );
 349          vg_line_pt3( contact.pos, 0.3f, 0xff0000ff );
 350 #endif
 351          return k_audio_sprite_type_none;
 352       }
 353    }
 354
 355    output[0] = pos[0];
 356    output[1] = 0.0f;
 357    output[2] = pos[2];
 358
 359    if( world.water.enabled )
 360       return k_audio_sprite_type_water;
 361    else
 362       return k_audio_sprite_type_none;
 363 }
 364
 365 VG_STATIC void audio_debug_soundscapes(void)
 366 {
 367    if( !k_audio_debug_soundscape ) return;
 368
 369    char buf[64];
 370    snprintf( buf, 31, "occlusion: %.5f", audio_occlusion_current );
 371
 372    vg_uictx.cursor[0] = 450;
 373    vg_uictx.cursor[1] = 10;
 374    vg_uictx.cursor[2] = audio_occlusion_current * 200.0f;
 375    vg_uictx.cursor[3] = 20;
 376
 377    ui_fill_rect( vg_uictx.cursor, 0x55cccccc );
 378    ui_text( vg_uictx.cursor, buf, 1, 0 );
 379 }
 380
 381 #endif /* AUDIO_H */