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