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    { .path = "sound/jump2.ogg", .source_mode=k_audio_source_compressed, },
  32    { .path = "sound/jump3.ogg", .source_mode=k_audio_source_compressed, }
  33 };
  34
  35 audio_clip audio_footsteps[] = {
  36  {.path = "sound/step_concrete0.ogg", .source_mode=k_audio_source_compressed,},
  37  {.path = "sound/step_concrete1.ogg", .source_mode=k_audio_source_compressed,},
  38  {.path = "sound/step_concrete2.ogg", .source_mode=k_audio_source_compressed,},
  39  {.path = "sound/step_concrete3.ogg", .source_mode=k_audio_source_compressed,}
  40 };
  41
  42 audio_clip audio_lands[] = {
  43    { .path = "sound/revert0.ogg", .source_mode=k_audio_source_compressed },
  44    { .path = "sound/revert1.ogg", .source_mode=k_audio_source_compressed },
  45    { .path = "sound/revert2.ogg", .source_mode=k_audio_source_compressed },
  46    { .path = "sound/revert3.ogg", .source_mode=k_audio_source_compressed },
  47    { .path = "sound/revert4.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 ambient_sprites[4] =
  90 {
  91    { .name = "Ambient Sprites 0" },
  92    { .name = "Ambient Sprites 1" },
  93    { .name = "Ambient Sprites 2" },
  94    { .name = "Ambient Sprites 3" },
  95 };
  96
  97 audio_player audio_player0 =
  98 {
  99    .name = "Player0",
 100 };
 101
 102 audio_player audio_player1 =
 103 {
 104    .name = "Player1",
 105 };
 106
 107 audio_player audio_player2 =
 108 {
 109    .name = "Player2",
 110 };
 111
 112 audio_player audio_player3 =
 113 {
 114    .name = "Player3",
 115 };
 116
 117 audio_player audio_player_extra =
 118 {
 119    .name = "PlayerInst"
 120 };
 121
 122 audio_player audio_player_gate =
 123 {
 124    .name = "Gate"
 125 };
 126
 127 static void audio_init(void)
 128 {
 129    audio_player_init( &audio_player0 );
 130    audio_player_init( &audio_player1 );
 131    audio_player_init( &audio_player2 );
 132    audio_player_init( &audio_player3 );
 133    audio_player_init( &audio_player_gate );
 134    audio_player_init( &ambient_player );
 135    audio_player_init( &ambient_sprites[0] );
 136    audio_player_init( &ambient_sprites[1] );
 137    audio_player_init( &ambient_sprites[2] );
 138    audio_player_init( &ambient_sprites[3] );
 139    audio_player_init( &audio_player_extra );
 140
 141    audio_clip_loadn( audio_board, vg_list_size(audio_board) );
 142    audio_clip_loadn( audio_ambience, vg_list_size(audio_ambience) );
 143    audio_clip_loadn( &audio_splash, 1 );
 144    audio_clip_loadn( &audio_gate_pass, 1 );
 145    audio_clip_loadn( &audio_gate_lap, 1 );
 146    audio_clip_loadn( &audio_gate_ambient, 1 );
 147    audio_clip_loadn( audio_jumps, vg_list_size(audio_jumps) );
 148    audio_clip_loadn( audio_lands, vg_list_size(audio_lands) );
 149    audio_clip_loadn( audio_water, vg_list_size(audio_water) );
 150    audio_clip_loadn( audio_grass, vg_list_size(audio_grass) );
 151    audio_clip_loadn( audio_footsteps, vg_list_size(audio_footsteps) );
 152
 153    audio_lock();
 154    u32 flags = AUDIO_FLAG_LOOP|AUDIO_FLAG_SPACIAL_3D;
 155
 156    audio_player_set_flags( &audio_player0, flags );
 157    audio_player_set_flags( &audio_player1, flags );
 158    audio_player_set_flags( &audio_player2, flags );
 159    audio_player_set_flags( &audio_player_gate, flags );
 160    audio_player_set_flags( &audio_player3, AUDIO_FLAG_LOOP );
 161    audio_player_set_flags( &ambient_player, AUDIO_FLAG_LOOP );
 162    audio_player_set_flags( &ambient_sprites[0], AUDIO_FLAG_SPACIAL_3D );
 163    audio_player_set_flags( &ambient_sprites[1], AUDIO_FLAG_SPACIAL_3D );
 164    audio_player_set_flags( &ambient_sprites[2], AUDIO_FLAG_SPACIAL_3D );
 165    audio_player_set_flags( &ambient_sprites[3], AUDIO_FLAG_SPACIAL_3D );
 166    audio_player_set_vol( &ambient_player, 1.0f );
 167    audio_player_set_vol( &audio_player_gate, 0.0f );
 168    audio_player_set_vol( &audio_player_extra, 1.0f );
 169
 170    audio_player_playclip( &audio_player0, &audio_board[0] );
 171    audio_player_playclip( &audio_player1, &audio_board[1] );
 172    audio_player_playclip( &audio_player2, &audio_board[2] );
 173    audio_player_playclip( &audio_player3, &audio_board[3] );
 174    audio_player_playclip( &ambient_player, &audio_ambience[0] );
 175    audio_player_playclip( &audio_player_gate, &audio_gate_ambient );
 176
 177    audio_unlock();
 178
 179    vg_convar_push( (struct vg_convar){
 180       .name = "aud_debug_soundscape",
 181       .data = &k_audio_debug_soundscape,
 182       .data_type = k_convar_dtype_i32,
 183       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 184       .persistent = 1
 185    });
 186
 187    vg_convar_push( (struct vg_convar){
 188       .name = "aud_occlusion_rate",
 189       .data = &k_audio_occlusion_rate,
 190       .data_type = k_convar_dtype_f32,
 191       .opt_f32 = { .clamp = 0 },
 192       .persistent = 1
 193    });
 194 }
 195
 196 static void audio_free(void*_)
 197 {
 198    /* TODO! */
 199    vg_warn( "UNIMPLEMENTED: audio_free()\n" );
 200 }
 201
 202 static void audio_sample_occlusion( v3f origin )
 203 {
 204    float d = 0.0f,
 205          sample_dist = 880.0f;
 206
 207    int sample_count = 8;
 208
 209    int lv = 0;
 210    v3f last;
 211    v3_zero(last);
 212
 213    for( int i=0; i<sample_count; i++ )
 214    {
 215       v3f dir;
 216       vg_rand_dir( dir );
 217
 218       ray_hit contact;
 219       contact.dist = 15.0f;
 220
 221       if( ray_world( origin, dir, &contact ) )
 222       {
 223          d += contact.dist;
 224
 225          vg_line( origin, contact.pos, 0xff0000ff );
 226          vg_line_pt3( contact.pos, 0.1f, 0xff0000ff );
 227
 228          if( lv )
 229             vg_line( contact.pos, last, 0xffffffff );
 230          v3_copy( contact.pos, last );
 231          lv = 1;
 232       }
 233       else
 234       {
 235          v3f p1;
 236          v3_muladds( origin, dir, sample_dist, p1 );
 237          vg_line( origin, p1, 0xffcccccc );
 238
 239          d += sample_dist;
 240          lv = 0;
 241       }
 242
 243    }
 244
 245    float occlusion = 1.0f - (d * (1.0f/(sample_dist*(float)sample_count))),
 246          rate = VG_TIMESTEP_FIXED * k_audio_occlusion_rate,
 247          target = powf( occlusion, 6.0f );
 248    audio_occlusion_current = vg_lerpf( audio_occlusion_current, target, rate );
 249 }
 250
 251 enum audio_sprite_type
 252 {
 253    k_audio_sprite_type_none,
 254    k_audio_sprite_type_grass,
 255    k_audio_sprite_type_water
 256 };
 257
 258 /*
 259  * Trace out a random point, near the player to try and determine water areas
 260  */
 261 static enum audio_sprite_type audio_sample_sprite_random( v3f origin,
 262                                                           v3f output )
 263 {
 264    v3f chance = { (vg_randf()-0.5f) * 30.0f,
 265                   8.0f,
 266                   (vg_randf()-0.5f) * 30.0f };
 267
 268    v3f pos;
 269    v3_add( chance, origin, pos );
 270
 271    ray_hit contact;
 272    contact.dist = vg_minf( 16.0f, pos[1] );
 273
 274
 275    if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &contact ) )
 276    {
 277       if( ray_hit_is_ramp( &contact ) )
 278       {
 279          vg_line( pos, contact.pos, 0xff0000ff );
 280          vg_line_pt3( contact.pos, 0.3f, 0xff0000ff );
 281          return k_audio_sprite_type_none;
 282       }
 283
 284       v3_copy( contact.pos, output );
 285       return k_audio_sprite_type_grass;
 286    }
 287
 288    output[0] = pos[0];
 289    output[1] = 0.0f;
 290    output[2] = pos[2];
 291
 292    return k_audio_sprite_type_water;
 293 }
 294
 295 static void audio_debug_soundscapes(void)
 296 {
 297    if( !k_audio_debug_soundscape ) return;
 298
 299    char buf[64];
 300    snprintf( buf, 31, "occlusion: %.5f", audio_occlusion_current );
 301
 302    ui_global_ctx.cursor[0] = 450;
 303    ui_global_ctx.cursor[1] = 10;
 304    ui_global_ctx.cursor[2] = audio_occlusion_current * 200.0f;
 305    ui_global_ctx.cursor[3] = 20;
 306
 307    gui_fill_rect( ui_global_ctx.cursor, 0x55cccccc );
 308    gui_text( ui_global_ctx.cursor, buf, 1, 0 );
 309 }
 310
 311 #endif /* AUDIO_H */