audio.h

   1 #include "common.h"
   2
   3 #ifndef AUDIO_H
   4 #define AUDIO_H
   5
   6 #include "world.h"
   7
   8 static float audio_occlusion_current = 0.0f,
   9              k_audio_occlusion_rate  = 1.0f;
  10
  11 static int   k_audio_debug_soundscape = 0;
  12
  13 audio_clip audio_board[] =
  14 {
  15    {.path="sound/skate.ogg", .source_mode=k_audio_source_compressed },
  16    {.path="sound/wheel.ogg", .source_mode=k_audio_source_compressed },
  17    {.path="sound/slide.ogg", .source_mode=k_audio_source_compressed },
  18    {.path="sound/reverb.ogg",.source_mode=k_audio_source_compressed }
  19 };
  20
  21 audio_clip audio_ding =
  22 { .path = "sound/ding.ogg", .source_mode=k_audio_source_compressed };
  23
  24 audio_clip audio_jumps[] = {
  25    { .path = "sound/jump0.ogg", .source_mode=k_audio_source_compressed, },
  26    { .path = "sound/jump1.ogg", .source_mode=k_audio_source_compressed, },
  27    { .path = "sound/jump2.ogg", .source_mode=k_audio_source_compressed, },
  28    { .path = "sound/jump3.ogg", .source_mode=k_audio_source_compressed, }
  29 };
  30
  31 audio_clip audio_footsteps[] = {
  32  {.path = "sound/step_concrete0.ogg", .source_mode=k_audio_source_compressed,},
  33  {.path = "sound/step_concrete1.ogg", .source_mode=k_audio_source_compressed,},
  34  {.path = "sound/step_concrete2.ogg", .source_mode=k_audio_source_compressed,},
  35  {.path = "sound/step_concrete3.ogg", .source_mode=k_audio_source_compressed,}
  36 };
  37
  38 audio_clip audio_lands[] = {
  39    { .path = "sound/revert0.ogg", .source_mode=k_audio_source_compressed },
  40    { .path = "sound/revert1.ogg", .source_mode=k_audio_source_compressed },
  41    { .path = "sound/revert2.ogg", .source_mode=k_audio_source_compressed },
  42    { .path = "sound/revert3.ogg", .source_mode=k_audio_source_compressed },
  43    { .path = "sound/revert4.ogg", .source_mode=k_audio_source_compressed }
  44 };
  45
  46 audio_clip audio_water[] = {
  47    { .path = "sound/wave0.ogg", .source_mode=k_audio_source_compressed },
  48    { .path = "sound/wave1.ogg", .source_mode=k_audio_source_compressed },
  49    { .path = "sound/wave2.ogg", .source_mode=k_audio_source_compressed },
  50    { .path = "sound/wave3.ogg", .source_mode=k_audio_source_compressed },
  51    { .path = "sound/wave4.ogg", .source_mode=k_audio_source_compressed },
  52    { .path = "sound/wave5.ogg", .source_mode=k_audio_source_compressed }
  53 };
  54
  55 audio_clip audio_grass[] = {
  56    { .path = "sound/grass0.ogg", .source_mode=k_audio_source_compressed },
  57    { .path = "sound/grass1.ogg", .source_mode=k_audio_source_compressed },
  58    { .path = "sound/grass2.ogg", .source_mode=k_audio_source_compressed },
  59    { .path = "sound/grass3.ogg", .source_mode=k_audio_source_compressed },
  60 };
  61
  62 audio_clip audio_ambience[] =
  63 {
  64    {.path="sound/town_generic.ogg",
  65       .source_mode=k_audio_source_compressed }
  66 };
  67
  68 audio_clip audio_gate_pass = {
  69    .path = "sound/gate_pass.ogg", .source_mode=k_audio_source_compressed
  70 };
  71
  72 audio_clip audio_gate_lap = {
  73    .path = "sound/gate_lap.ogg", .source_mode=k_audio_source_compressed
  74 };
  75
  76 audio_clip audio_gate_ambient = {
  77 .path = "sound/gate_ambient.ogg", .source_mode=k_audio_source_compressed
  78 };
  79
  80 audio_player ambient_player =
  81 {
  82    .name = "Ambience"
  83 };
  84
  85 audio_player ambient_sprites[4] =
  86 {
  87    { .name = "Ambient Sprites 0" },
  88    { .name = "Ambient Sprites 1" },
  89    { .name = "Ambient Sprites 2" },
  90    { .name = "Ambient Sprites 3" },
  91 };
  92
  93 audio_player audio_player0 =
  94 {
  95    .name = "Player0",
  96 };
  97
  98 audio_player audio_player1 =
  99 {
 100    .name = "Player1",
 101 };
 102
 103 audio_player audio_player2 =
 104 {
 105    .name = "Player2",
 106 };
 107
 108 audio_player audio_player3 =
 109 {
 110    .name = "Player3",
 111 };
 112
 113 audio_player audio_player_extra =
 114 {
 115    .name = "PlayerInst"
 116 };
 117
 118 audio_player audio_player_gate =
 119 {
 120    .name = "Gate"
 121 };
 122
 123 static void audio_init(void)
 124 {
 125    audio_player_init( &audio_player0 );
 126    audio_player_init( &audio_player1 );
 127    audio_player_init( &audio_player2 );
 128    audio_player_init( &audio_player3 );
 129    audio_player_init( &audio_player_gate );
 130    audio_player_init( &ambient_player );
 131    audio_player_init( &ambient_sprites[0] );
 132    audio_player_init( &ambient_sprites[1] );
 133    audio_player_init( &ambient_sprites[2] );
 134    audio_player_init( &ambient_sprites[3] );
 135    audio_player_init( &audio_player_extra );
 136
 137    audio_clip_loadn( audio_board, vg_list_size(audio_board) );
 138    audio_clip_loadn( audio_ambience, vg_list_size(audio_ambience) );
 139    audio_clip_loadn( &audio_ding, 1 );
 140    audio_clip_loadn( &audio_gate_pass, 1 );
 141    audio_clip_loadn( &audio_gate_lap, 1 );
 142    audio_clip_loadn( &audio_gate_ambient, 1 );
 143    audio_clip_loadn( audio_jumps, vg_list_size(audio_jumps) );
 144    audio_clip_loadn( audio_lands, vg_list_size(audio_lands) );
 145    audio_clip_loadn( audio_water, vg_list_size(audio_water) );
 146    audio_clip_loadn( audio_grass, vg_list_size(audio_grass) );
 147    audio_clip_loadn( audio_footsteps, vg_list_size(audio_footsteps) );
 148
 149    audio_lock();
 150    u32 flags = AUDIO_FLAG_LOOP|AUDIO_FLAG_SPACIAL_3D;
 151
 152    audio_player_set_flags( &audio_player0, flags );
 153    audio_player_set_flags( &audio_player1, flags );
 154    audio_player_set_flags( &audio_player2, flags );
 155    audio_player_set_flags( &audio_player_gate, flags );
 156    audio_player_set_flags( &audio_player3, AUDIO_FLAG_LOOP );
 157    audio_player_set_flags( &ambient_player, AUDIO_FLAG_LOOP );
 158    audio_player_set_flags( &ambient_sprites[0], AUDIO_FLAG_SPACIAL_3D );
 159    audio_player_set_flags( &ambient_sprites[1], AUDIO_FLAG_SPACIAL_3D );
 160    audio_player_set_flags( &ambient_sprites[2], AUDIO_FLAG_SPACIAL_3D );
 161    audio_player_set_flags( &ambient_sprites[3], AUDIO_FLAG_SPACIAL_3D );
 162    audio_player_set_vol( &ambient_player, 1.0f );
 163    audio_player_set_vol( &audio_player_gate, 5.0f );
 164    audio_player_set_vol( &audio_player_extra, 1.0f );
 165
 166    audio_player_playclip( &audio_player0, &audio_board[0] );
 167    audio_player_playclip( &audio_player1, &audio_board[1] );
 168    audio_player_playclip( &audio_player2, &audio_board[2] );
 169    audio_player_playclip( &audio_player3, &audio_board[3] );
 170    audio_player_playclip( &ambient_player, &audio_ambience[0] );
 171    audio_player_playclip( &audio_player_gate, &audio_gate_ambient );
 172
 173    audio_unlock();
 174
 175    vg_convar_push( (struct vg_convar){
 176       .name = "aud_debug_soundscape",
 177       .data = &k_audio_debug_soundscape,
 178       .data_type = k_convar_dtype_i32,
 179       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 180       .persistent = 1
 181    });
 182
 183    vg_convar_push( (struct vg_convar){
 184       .name = "aud_occlusion_rate",
 185       .data = &k_audio_occlusion_rate,
 186       .data_type = k_convar_dtype_f32,
 187       .opt_f32 = { .clamp = 0 },
 188       .persistent = 1
 189    });
 190 }
 191
 192 static void audio_free(void)
 193 {
 194 }
 195
 196 static void audio_sample_occlusion( v3f origin )
 197 {
 198    float d = 0.0f,
 199          sample_dist = 880.0f;
 200
 201    int sample_count = 8;
 202
 203    int lv = 0;
 204    v3f last;
 205
 206    for( int i=0; i<sample_count; i++ )
 207    {
 208       v3f dir;
 209       vg_rand_dir( dir );
 210
 211       ray_hit contact;
 212       contact.dist = 15.0f;
 213
 214       if( ray_world( origin, dir, &contact ) )
 215       {
 216          d += contact.dist;
 217
 218          vg_line( origin, contact.pos, 0xff0000ff );
 219          vg_line_pt3( contact.pos, 0.1f, 0xff0000ff );
 220
 221          if( lv )
 222             vg_line( contact.pos, last, 0xffffffff );
 223          v3_copy( contact.pos, last );
 224          lv = 1;
 225       }
 226       else
 227       {
 228          v3f p1;
 229          v3_muladds( origin, dir, sample_dist, p1 );
 230          vg_line( origin, p1, 0xffcccccc );
 231
 232          d += sample_dist;
 233          lv = 0;
 234       }
 235
 236    }
 237
 238    float occlusion = 1.0f - (d * (1.0f/(sample_dist*(float)sample_count))),
 239          rate = ktimestep * k_audio_occlusion_rate,
 240          target = powf( occlusion, 6.0f );
 241    audio_occlusion_current = vg_lerpf( audio_occlusion_current, target, rate );
 242 }
 243
 244 enum audio_sprite_type
 245 {
 246    k_audio_sprite_type_none,
 247    k_audio_sprite_type_grass,
 248    k_audio_sprite_type_water
 249 };
 250
 251 /*
 252  * Trace out a random point, near the player to try and determine water areas
 253  */
 254 static enum audio_sprite_type audio_sample_sprite_random( v3f origin,
 255                                                           v3f output )
 256 {
 257    v3f chance = { (vg_randf()-0.5f) * 30.0f,
 258                   8.0f,
 259                   (vg_randf()-0.5f) * 30.0f };
 260
 261    v3f pos;
 262    v3_add( chance, origin, pos );
 263
 264    ray_hit contact;
 265    contact.dist = vg_minf( 16.0f, pos[1] );
 266
 267
 268    if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &contact ) )
 269    {
 270       if( ray_hit_is_ramp( &contact ) )
 271       {
 272          vg_line( pos, contact.pos, 0xff0000ff );
 273          vg_line_pt3( contact.pos, 0.3f, 0xff0000ff );
 274          return k_audio_sprite_type_none;
 275       }
 276
 277       v3_copy( contact.pos, output );
 278       return k_audio_sprite_type_grass;
 279    }
 280
 281    output[0] = pos[0];
 282    output[1] = 0.0f;
 283    output[2] = pos[2];
 284
 285    return k_audio_sprite_type_water;
 286 }
 287
 288 static void audio_debug_soundscapes(void)
 289 {
 290    if( !k_audio_debug_soundscape ) return;
 291
 292    char buf[64];
 293    snprintf( buf, 31, "occlusion: %.5f", audio_occlusion_current );
 294
 295    ui_global_ctx.cursor[0] = 450;
 296    ui_global_ctx.cursor[1] = 10;
 297    ui_global_ctx.cursor[2] = audio_occlusion_current * 200.0f;
 298    ui_global_ctx.cursor[3] = 20;
 299
 300    gui_fill_rect( ui_global_ctx.cursor, 0x55cccccc );
 301    gui_text( ui_global_ctx.cursor, buf, 1, 0 );
 302 }
 303
 304 #endif /* AUDIO_H */