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/snap0.ogg", .source_mode=k_audio_source_compressed, },
  26    { .path = "sound/snap1.ogg", .source_mode=k_audio_source_compressed, },
  27    { .path = "sound/snap2.ogg", .source_mode=k_audio_source_compressed, },
  28    { .path = "sound/snap3.ogg", .source_mode=k_audio_source_compressed, }
  29 };
  30
  31 audio_clip audio_lands[] = {
  32    { .path = "sound/revert0.ogg", .source_mode=k_audio_source_compressed },
  33    { .path = "sound/revert1.ogg", .source_mode=k_audio_source_compressed },
  34    { .path = "sound/revert2.ogg", .source_mode=k_audio_source_compressed },
  35    { .path = "sound/revert3.ogg", .source_mode=k_audio_source_compressed },
  36    { .path = "sound/revert4.ogg", .source_mode=k_audio_source_compressed }
  37 };
  38
  39 audio_clip audio_ambience[] =
  40 {
  41    {.path="sound/town_generic.ogg",
  42       .source_mode=k_audio_source_compressed }
  43 };
  44
  45 audio_clip audio_gate_pass = {
  46    .path = "sound/gate_pass.ogg", .source_mode=k_audio_source_compressed
  47 };
  48
  49 audio_clip audio_gate_lap = {
  50    .path = "sound/gate_lap.ogg", .source_mode=k_audio_source_compressed
  51 };
  52
  53 audio_clip audio_gate_ambient = {
  54 .path = "sound/gate_ambient.ogg", .source_mode=k_audio_source_compressed
  55 };
  56
  57 audio_player ambient_player =
  58 {
  59    .name = "Ambience"
  60 };
  61
  62 audio_player audio_player0 =
  63 {
  64    .name = "Player0",
  65 };
  66
  67 audio_player audio_player1 =
  68 {
  69    .name = "Player1",
  70 };
  71
  72 audio_player audio_player2 =
  73 {
  74    .name = "Player2",
  75 };
  76
  77 audio_player audio_player3 =
  78 {
  79    .name = "Player3",
  80 };
  81
  82 audio_player audio_player_extra =
  83 {
  84    .name = "PlayerInst"
  85 };
  86
  87 audio_player audio_player_gate =
  88 {
  89    .name = "Gate"
  90 };
  91
  92 static void audio_init(void)
  93 {
  94    audio_player_init( &audio_player0 );
  95    audio_player_init( &audio_player1 );
  96    audio_player_init( &audio_player2 );
  97    audio_player_init( &audio_player3 );
  98    audio_player_init( &audio_player_gate );
  99    audio_player_init( &ambient_player );
 100    audio_player_init( &audio_player_extra );
 101
 102    audio_clip_loadn( audio_board, vg_list_size(audio_board) );
 103    audio_clip_loadn( audio_ambience, vg_list_size(audio_ambience) );
 104    audio_clip_loadn( &audio_ding, 1 );
 105    audio_clip_loadn( &audio_gate_pass, 1 );
 106    audio_clip_loadn( &audio_gate_lap, 1 );
 107    audio_clip_loadn( &audio_gate_ambient, 1 );
 108    audio_clip_loadn( audio_jumps, vg_list_size(audio_jumps) );
 109    audio_clip_loadn( audio_lands, vg_list_size(audio_lands) );
 110
 111    audio_lock();
 112    u32 flags = AUDIO_FLAG_LOOP|AUDIO_FLAG_SPACIAL_3D;
 113
 114    audio_player_set_flags( &audio_player0, flags );
 115    audio_player_set_flags( &audio_player1, flags );
 116    audio_player_set_flags( &audio_player2, flags );
 117    audio_player_set_flags( &audio_player_gate, flags );
 118    audio_player_set_flags( &audio_player3, AUDIO_FLAG_LOOP );
 119    audio_player_set_flags( &ambient_player, AUDIO_FLAG_LOOP );
 120    audio_player_set_vol( &ambient_player, 1.0f );
 121    audio_player_set_vol( &audio_player_gate, 5.0f );
 122    audio_player_set_vol( &audio_player_extra, 1.0f );
 123
 124    audio_player_playclip( &audio_player0, &audio_board[0] );
 125    audio_player_playclip( &audio_player1, &audio_board[1] );
 126    audio_player_playclip( &audio_player2, &audio_board[2] );
 127    audio_player_playclip( &audio_player3, &audio_board[3] );
 128    audio_player_playclip( &ambient_player, &audio_ambience[0] );
 129    audio_player_playclip( &audio_player_gate, &audio_gate_ambient );
 130
 131    audio_unlock();
 132
 133    vg_convar_push( (struct vg_convar){
 134       .name = "aud_debug_soundscape",
 135       .data = &k_audio_debug_soundscape,
 136       .data_type = k_convar_dtype_i32,
 137       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 138       .persistent = 1
 139    });
 140
 141    vg_convar_push( (struct vg_convar){
 142       .name = "aud_occlusion_rate",
 143       .data = &k_audio_occlusion_rate,
 144       .data_type = k_convar_dtype_f32,
 145       .opt_f32 = { .clamp = 0 },
 146       .persistent = 1
 147    });
 148 }
 149
 150 static void audio_free(void)
 151 {
 152 }
 153
 154 static void audio_sample_occlusion( v3f origin )
 155 {
 156    float d = 0.0f,
 157          sample_dist = 880.0f;
 158
 159    int sample_count = 8;
 160
 161    int lv = 0;
 162    v3f last;
 163
 164    for( int i=0; i<sample_count; i++ )
 165    {
 166       v3f dir;
 167       vg_rand_dir( dir );
 168
 169       ray_hit contact;
 170       contact.dist = 15.0f;
 171
 172       if( ray_world( origin, dir, &contact ) )
 173       {
 174          d += contact.dist;
 175
 176          vg_line( origin, contact.pos, 0xff0000ff );
 177          vg_line_pt3( contact.pos, 0.1f, 0xff0000ff );
 178
 179          if( lv )
 180             vg_line( contact.pos, last, 0xffffffff );
 181          v3_copy( contact.pos, last );
 182          lv = 1;
 183       }
 184       else
 185       {
 186          v3f p1;
 187          v3_muladds( origin, dir, sample_dist, p1 );
 188          vg_line( origin, p1, 0xffcccccc );
 189
 190          d += sample_dist;
 191          lv = 0;
 192       }
 193
 194    }
 195
 196    float occlusion = 1.0f - (d * (1.0f/(sample_dist*(float)sample_count))),
 197          rate = ktimestep * k_audio_occlusion_rate,
 198          target = powf( occlusion, 6.0f );
 199    audio_occlusion_current = vg_lerpf( audio_occlusion_current, target, rate );
 200 }
 201
 202 static void audio_debug_soundscapes(void)
 203 {
 204    if( !k_audio_debug_soundscape ) return;
 205
 206    char buf[64];
 207    snprintf( buf, 31, "occlusion: %.5f", audio_occlusion_current );
 208
 209    ui_global_ctx.cursor[0] = 450;
 210    ui_global_ctx.cursor[1] = 10;
 211    ui_global_ctx.cursor[2] = audio_occlusion_current * 200.0f;
 212    ui_global_ctx.cursor[3] = 20;
 213
 214    gui_fill_rect( ui_global_ctx.cursor, 0x55cccccc );
 215    gui_text( ui_global_ctx.cursor, buf, 1, 0 );
 216 }
 217
 218 #endif /* AUDIO_H */