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 static float audio_occlusion_current = 0.0f,
  13              k_audio_occlusion_rate  = 1.0f;
  14
  15 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_lands[] = {
  41    { .path = "sound/land0.ogg" },
  42    { .path = "sound/land1.ogg" },
  43    { .path = "sound/land2.ogg" },
  44    { .path = "sound/landsk0.ogg" },
  45    { .path = "sound/landsk1.ogg" },
  46    { .path = "sound/onto.ogg" },
  47    { .path = "sound/outo.ogg" },
  48 };
  49
  50 audio_clip audio_water[] = {
  51    { .path = "sound/wave0.ogg" },
  52    { .path = "sound/wave1.ogg" },
  53    { .path = "sound/wave2.ogg" },
  54    { .path = "sound/wave3.ogg" },
  55    { .path = "sound/wave4.ogg" },
  56    { .path = "sound/wave5.ogg" }
  57 };
  58
  59 audio_clip audio_grass[] = {
  60    { .path = "sound/grass0.ogg" },
  61    { .path = "sound/grass1.ogg" },
  62    { .path = "sound/grass2.ogg" },
  63    { .path = "sound/grass3.ogg" },
  64 };
  65
  66 audio_clip audio_ambience[] =
  67 {
  68    { .path="sound/town_generic.ogg" }
  69 };
  70
  71 audio_clip audio_gate_pass = {
  72    .path = "sound/gate_pass.ogg"
  73 };
  74
  75 audio_clip audio_gate_lap = {
  76    .path = "sound/gate_lap.ogg"
  77 };
  78
  79 audio_clip audio_gate_ambient = {
  80 .path = "sound/gate_ambient.ogg"
  81 };
  82
  83 audio_player ambient_player =
  84 {
  85    .name = "Ambience"
  86 };
  87
  88 audio_player audio_rewind_player =
  89 {
  90    .name = "Rewind"
  91 };
  92
  93 audio_clip audio_rewind[] = {
  94 { .path = "sound/rewind_start.ogg" },
  95 { .path = "sound/rewind_end_1.5.ogg" },
  96 { .path = "sound/rewind_end_2.5.ogg" },
  97 { .path = "sound/rewind_end_6.5.ogg" },
  98 { .path = "sound/rewind_clack.ogg" },
  99 };
 100
 101 audio_clip audio_ui[] = {
 102    { .path = "sound/ui_click.ogg" },
 103    { .path = "sound/ui_ding.ogg" },
 104 };
 105
 106 audio_player ambient_sprites[4] =
 107 {
 108    { .name = "Ambient Sprites 0" },
 109    { .name = "Ambient Sprites 1" },
 110    { .name = "Ambient Sprites 2" },
 111    { .name = "Ambient Sprites 3" },
 112 };
 113
 114 audio_player audio_player0 =
 115 {
 116    .name = "Player0",
 117 };
 118
 119 audio_player audio_player1 =
 120 {
 121    .name = "Player1",
 122 };
 123
 124 audio_player audio_player2 =
 125 {
 126    .name = "Player2",
 127 };
 128
 129 audio_player audio_player3 =
 130 {
 131    .name = "Player3",
 132 };
 133
 134 audio_player audio_player_extra =
 135 {
 136    .name = "PlayerInst"
 137 };
 138
 139 audio_player audio_player_gate =
 140 {
 141    .name = "Gate"
 142 };
 143
 144 static void audio_init(void)
 145 {
 146    audio_player_init( &audio_player0 );
 147    audio_player_init( &audio_player1 );
 148    audio_player_init( &audio_player2 );
 149    audio_player_init( &audio_player3 );
 150    audio_player_init( &audio_player_gate );
 151    audio_player_init( &ambient_player );
 152    audio_player_init( &ambient_sprites[0] );
 153    audio_player_init( &ambient_sprites[1] );
 154    audio_player_init( &ambient_sprites[2] );
 155    audio_player_init( &ambient_sprites[3] );
 156    audio_player_init( &audio_player_extra );
 157    audio_player_init( &audio_rewind_player );
 158
 159    audio_clip_loadn( audio_board, vg_list_size(audio_board) );
 160    audio_clip_loadn( audio_ambience, vg_list_size(audio_ambience) );
 161    audio_clip_loadn( &audio_splash, 1 );
 162    audio_clip_loadn( &audio_gate_pass, 1 );
 163    audio_clip_loadn( &audio_gate_lap, 1 );
 164    audio_clip_loadn( &audio_gate_ambient, 1 );
 165    audio_clip_loadn( audio_jumps, vg_list_size(audio_jumps) );
 166    audio_clip_loadn( audio_lands, vg_list_size(audio_lands) );
 167    audio_clip_loadn( audio_water, vg_list_size(audio_water) );
 168    audio_clip_loadn( audio_grass, vg_list_size(audio_grass) );
 169    audio_clip_loadn( audio_footsteps, vg_list_size(audio_footsteps) );
 170    audio_clip_loadn( audio_rewind, vg_list_size(audio_rewind) );
 171    audio_clip_loadn( audio_ui, vg_list_size(audio_ui) );
 172
 173    audio_lock();
 174    u32 flags = AUDIO_FLAG_LOOP|AUDIO_FLAG_SPACIAL_3D;
 175
 176    audio_player_set_flags( &audio_player0, flags );
 177    audio_player_set_flags( &audio_player1, flags );
 178    audio_player_set_flags( &audio_player2, flags );
 179    audio_player_set_flags( &audio_player_gate, flags );
 180    audio_player_set_flags( &audio_player3, AUDIO_FLAG_LOOP );
 181    audio_player_set_flags( &ambient_player, AUDIO_FLAG_LOOP );
 182    audio_player_set_flags( &ambient_sprites[0], AUDIO_FLAG_SPACIAL_3D );
 183    audio_player_set_flags( &ambient_sprites[1], AUDIO_FLAG_SPACIAL_3D );
 184    audio_player_set_flags( &ambient_sprites[2], AUDIO_FLAG_SPACIAL_3D );
 185    audio_player_set_flags( &ambient_sprites[3], AUDIO_FLAG_SPACIAL_3D );
 186    audio_player_set_vol( &ambient_player, 1.0f );
 187    audio_player_set_vol( &audio_player_gate, 0.0f );
 188    audio_player_set_vol( &audio_player_extra, 1.0f );
 189    audio_player_set_vol( &audio_rewind_player, 0.2f );
 190    audio_player_set_flags( &audio_rewind_player, 0x00 );
 191
 192    audio_player_playclip( &audio_player0, &audio_board[0] );
 193    audio_player_playclip( &audio_player1, &audio_board[1] );
 194    audio_player_playclip( &audio_player2, &audio_board[2] );
 195    audio_player_playclip( &audio_player3, &audio_board[3] );
 196    audio_player_playclip( &ambient_player, &audio_ambience[0] );
 197    audio_player_playclip( &audio_player_gate, &audio_gate_ambient );
 198
 199    audio_unlock();
 200
 201    vg_convar_push( (struct vg_convar){
 202       .name = "aud_debug_soundscape",
 203       .data = &k_audio_debug_soundscape,
 204       .data_type = k_convar_dtype_i32,
 205       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 206       .persistent = 1
 207    });
 208
 209    vg_convar_push( (struct vg_convar){
 210       .name = "aud_occlusion_rate",
 211       .data = &k_audio_occlusion_rate,
 212       .data_type = k_convar_dtype_f32,
 213       .opt_f32 = { .clamp = 0 },
 214       .persistent = 1
 215    });
 216 }
 217
 218 static void audio_free(void*_)
 219 {
 220    /* TODO! */
 221    vg_warn( "UNIMPLEMENTED: audio_free()\n" );
 222 }
 223
 224 static void audio_sample_occlusion( v3f origin )
 225 {
 226    float d = 0.0f,
 227          sample_dist = 880.0f;
 228
 229    int sample_count = 8;
 230
 231    int lv = 0;
 232    v3f last;
 233    v3_zero(last);
 234
 235    for( int i=0; i<sample_count; i++ )
 236    {
 237       v3f dir;
 238       vg_rand_dir( dir );
 239
 240       ray_hit contact;
 241       contact.dist = 15.0f;
 242
 243       if( ray_world( origin, dir, &contact ) )
 244       {
 245          d += contact.dist;
 246
 247          vg_line( origin, contact.pos, 0xff0000ff );
 248          vg_line_pt3( contact.pos, 0.1f, 0xff0000ff );
 249
 250          if( lv )
 251             vg_line( contact.pos, last, 0xffffffff );
 252          v3_copy( contact.pos, last );
 253          lv = 1;
 254       }
 255       else
 256       {
 257          v3f p1;
 258          v3_muladds( origin, dir, sample_dist, p1 );
 259          vg_line( origin, p1, 0xffcccccc );
 260
 261          d += sample_dist;
 262          lv = 0;
 263       }
 264
 265    }
 266
 267    float occlusion = 1.0f - (d * (1.0f/(sample_dist*(float)sample_count))),
 268          rate = VG_TIMESTEP_FIXED * k_audio_occlusion_rate,
 269          target = powf( occlusion, 6.0f );
 270    audio_occlusion_current = vg_lerpf( audio_occlusion_current, target, rate );
 271 }
 272
 273 enum audio_sprite_type
 274 {
 275    k_audio_sprite_type_none,
 276    k_audio_sprite_type_grass,
 277    k_audio_sprite_type_water
 278 };
 279
 280 /*
 281  * Trace out a random point, near the player to try and determine water areas
 282  */
 283 static enum audio_sprite_type audio_sample_sprite_random( v3f origin,
 284                                                           v3f output )
 285 {
 286    v3f chance = { (vg_randf()-0.5f) * 30.0f,
 287                   8.0f,
 288                   (vg_randf()-0.5f) * 30.0f };
 289
 290    v3f pos;
 291    v3_add( chance, origin, pos );
 292
 293    ray_hit contact;
 294    contact.dist = vg_minf( 16.0f, pos[1] );
 295
 296
 297    if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &contact ) )
 298    {
 299       if( ray_hit_is_ramp( &contact ) )
 300       {
 301          vg_line( pos, contact.pos, 0xff0000ff );
 302          vg_line_pt3( contact.pos, 0.3f, 0xff0000ff );
 303          return k_audio_sprite_type_none;
 304       }
 305
 306       v3_copy( contact.pos, output );
 307       return k_audio_sprite_type_grass;
 308    }
 309
 310    output[0] = pos[0];
 311    output[1] = 0.0f;
 312    output[2] = pos[2];
 313
 314    return k_audio_sprite_type_water;
 315 }
 316
 317 static void audio_debug_soundscapes(void)
 318 {
 319    if( !k_audio_debug_soundscape ) return;
 320
 321    char buf[64];
 322    snprintf( buf, 31, "occlusion: %.5f", audio_occlusion_current );
 323
 324    vg_uictx.cursor[0] = 450;
 325    vg_uictx.cursor[1] = 10;
 326    vg_uictx.cursor[2] = audio_occlusion_current * 200.0f;
 327    vg_uictx.cursor[3] = 20;
 328
 329    ui_fill_rect( vg_uictx.cursor, 0x55cccccc );
 330    ui_text( vg_uictx.cursor, buf, 1, 0 );
 331 }
 332
 333 #endif /* AUDIO_H */