audio.c

   1 #include "world.h"
   2 #include "audio.h"
   3 #include "vg/vg_audio_dsp.h"
   4
   5 audio_clip audio_board[] =
   6 {
   7    { .path="sound/skate_hpf.ogg" },
   8    { .path="sound/wheel.ogg" },
   9    { .path="sound/slide.ogg" },
  10    { .path="sound/grind_enter.ogg" },
  11    { .path="sound/grind_exit.ogg" },
  12    { .path="sound/grind_loop.ogg" },
  13    { .path="sound/woodslide.ogg" },
  14    { .path="sound/metalscrape.ogg" },
  15    { .path="sound/slidetap.ogg" }
  16 };
  17
  18 audio_clip audio_taps[] =
  19 {
  20    { .path="sound/tap0.ogg" },
  21    { .path="sound/tap1.ogg" },
  22    { .path="sound/tap2.ogg" },
  23    { .path="sound/tap3.ogg" }
  24 };
  25
  26 audio_clip audio_flips[] =
  27 {
  28    { .path="sound/lf0.ogg" },
  29    { .path="sound/lf1.ogg" },
  30    { .path="sound/lf2.ogg" },
  31    { .path="sound/lf3.ogg" },
  32 };
  33
  34 audio_clip audio_hits[] =
  35 {
  36    { .path="sound/hit0.ogg" },
  37    { .path="sound/hit1.ogg" },
  38    { .path="sound/hit2.ogg" },
  39    { .path="sound/hit3.ogg" },
  40    { .path="sound/hit4.ogg" }
  41 };
  42
  43 audio_clip audio_splash =
  44 { .path = "sound/splash.ogg" };
  45
  46 audio_clip audio_jumps[] = {
  47    { .path = "sound/jump0.ogg" },
  48    { .path = "sound/jump1.ogg" },
  49 };
  50
  51 audio_clip audio_footsteps[] = {
  52  {.path = "sound/step_concrete0.ogg" },
  53  {.path = "sound/step_concrete1.ogg" },
  54  {.path = "sound/step_concrete2.ogg" },
  55  {.path = "sound/step_concrete3.ogg" }
  56 };
  57
  58 audio_clip audio_footsteps_grass[] = {
  59  {.path = "sound/step_bush0.ogg" },
  60  {.path = "sound/step_bush1.ogg" },
  61  {.path = "sound/step_bush2.ogg" },
  62  {.path = "sound/step_bush3.ogg" },
  63  {.path = "sound/step_bush4.ogg" },
  64  {.path = "sound/step_bush5.ogg" }
  65 };
  66
  67 audio_clip audio_footsteps_wood[] = {
  68  {.path = "sound/step_wood0.ogg" },
  69  {.path = "sound/step_wood1.ogg" },
  70  {.path = "sound/step_wood2.ogg" },
  71  {.path = "sound/step_wood3.ogg" },
  72  {.path = "sound/step_wood4.ogg" },
  73  {.path = "sound/step_wood5.ogg" }
  74 };
  75
  76 audio_clip audio_lands[] = {
  77    { .path = "sound/land0.ogg" },
  78    { .path = "sound/land1.ogg" },
  79    { .path = "sound/land2.ogg" },
  80    { .path = "sound/landsk0.ogg" },
  81    { .path = "sound/landsk1.ogg" },
  82    { .path = "sound/onto.ogg" },
  83    { .path = "sound/outo.ogg" },
  84 };
  85
  86 audio_clip audio_water[] = {
  87    { .path = "sound/wave0.ogg" },
  88    { .path = "sound/wave1.ogg" },
  89    { .path = "sound/wave2.ogg" },
  90    { .path = "sound/wave3.ogg" },
  91    { .path = "sound/wave4.ogg" },
  92    { .path = "sound/wave5.ogg" }
  93 };
  94
  95 audio_clip audio_grass[] = {
  96    { .path = "sound/grass0.ogg" },
  97    { .path = "sound/grass1.ogg" },
  98    { .path = "sound/grass2.ogg" },
  99    { .path = "sound/grass3.ogg" },
 100 };
 101
 102 audio_clip audio_ambience[] =
 103 {
 104    { .path="sound/town_generic.ogg" }
 105 };
 106
 107 audio_clip audio_gate_pass = {
 108    .path = "sound/gate_pass.ogg"
 109 };
 110
 111 audio_clip audio_gate_lap = {
 112    .path = "sound/gate_lap.ogg"
 113 };
 114
 115 audio_clip audio_gate_ambient = {
 116 .path = "sound/gate_ambient.ogg"
 117 };
 118
 119 audio_clip audio_rewind[] = {
 120 { .path = "sound/rewind_start.ogg" },
 121 { .path = "sound/rewind_end_1.5.ogg" },
 122 { .path = "sound/rewind_end_2.5.ogg" },
 123 { .path = "sound/rewind_end_6.5.ogg" },
 124 { .path = "sound/rewind_clack.ogg" },
 125 };
 126
 127 audio_clip audio_ui[] = {
 128    { .path = "sound/ui_click.ogg" },
 129    { .path = "sound/ui_ding.ogg" },
 130    { .path = "sound/teleport.ogg" },
 131    { .path = "sound/ui_move.ogg" }
 132 };
 133
 134 audio_clip audio_challenge[] = {
 135    { .path = "sound/objective0.ogg" },
 136    { .path = "sound/objective1.ogg" },
 137    { .path = "sound/objective_win.ogg" },
 138    { .path = "sound/ui_good.ogg" },
 139    { .path = "sound/ui_inf.ogg" },
 140    { .path = "sound/ui_ok.ogg" },
 141    { .path = "sound/objective_fail.ogg" }
 142 };
 143
 144 struct air_synth_data air_audio_data;
 145
 146 static void audio_air_synth_get_samples( void *_data, f32 *buf, u32 count ){
 147    struct air_synth_data *data = _data;
 148
 149    SDL_AtomicLock( &data->sl );
 150    f32 spd = data->speed;
 151    SDL_AtomicUnlock( &data->sl );
 152
 153    f32 s0  = sinf(data->t*2.0f),
 154        s1  = sinf(data->t*0.43f),
 155        s2  = sinf(data->t*1.333f),
 156        sm  = vg_clampf( data->speed / 45.0f, 0, 1 ),
 157        ft  = (s0*s1*s2)*0.5f+0.5f,
 158        f   = vg_lerpf( 200.0f, 1200.0f, sm*0.7f + ft*0.3f ),
 159        vol = 0.25f * sm;
 160
 161    dsp_init_biquad_butterworth_lpf( &data->lpf, f );
 162
 163    for( u32 i=0; i<count; i ++ ){
 164       f32 v = (vg_randf64(&vg_dsp.rand) * 2.0f - 1.0f) * vol;
 165       v = dsp_biquad_process( &data->lpf, v );
 166
 167       buf[i*2+0] = v;
 168       buf[i*2+1] = v;
 169    }
 170
 171    data->t += (f32)(count)/44100.0f;
 172 };
 173
 174 static audio_clip air_synth = {
 175    .flags = k_audio_format_gen,
 176    .size = 0,
 177    .func = audio_air_synth_get_samples,
 178    .data = &air_audio_data
 179 };
 180
 181 void audio_init(void)
 182 {
 183    audio_clip_loadn( audio_board, vg_list_size(audio_board), NULL );
 184    audio_clip_loadn( audio_taps, vg_list_size(audio_taps), NULL );
 185    audio_clip_loadn( audio_flips, vg_list_size(audio_flips), NULL );
 186    audio_clip_loadn( audio_hits, vg_list_size(audio_hits), NULL );
 187    audio_clip_loadn( audio_ambience, vg_list_size(audio_ambience), NULL );
 188    audio_clip_loadn( &audio_splash, 1, NULL );
 189    audio_clip_loadn( &audio_gate_pass, 1, NULL );
 190    audio_clip_loadn( &audio_gate_lap, 1, NULL );
 191    audio_clip_loadn( &audio_gate_ambient, 1, NULL );
 192
 193    audio_clip_loadn( audio_jumps, vg_list_size(audio_jumps), NULL );
 194    audio_clip_loadn( audio_lands, vg_list_size(audio_lands), NULL );
 195    audio_clip_loadn( audio_water, vg_list_size(audio_water), NULL );
 196    audio_clip_loadn( audio_grass, vg_list_size(audio_grass), NULL );
 197    audio_clip_loadn( audio_footsteps, vg_list_size(audio_footsteps), NULL );
 198    audio_clip_loadn( audio_footsteps_grass,
 199                      vg_list_size(audio_footsteps_grass), NULL );
 200    audio_clip_loadn( audio_footsteps_wood,
 201                      vg_list_size(audio_footsteps_wood), NULL );
 202    audio_clip_loadn( audio_rewind, vg_list_size(audio_rewind), NULL );
 203    audio_clip_loadn( audio_ui, vg_list_size(audio_ui), NULL );
 204    audio_clip_loadn( audio_challenge, vg_list_size(audio_challenge), NULL );
 205
 206    audio_lock();
 207    audio_set_lfo_wave( 0, k_lfo_polynomial_bipolar, 80.0f );
 208    audio_set_lfo_frequency( 0, 20.0f );
 209
 210    air_audio_data.channel = audio_get_first_idle_channel();
 211    if( air_audio_data.channel )
 212       audio_channel_init( air_audio_data.channel, &air_synth, 0 );
 213
 214    audio_unlock();
 215 }
 216
 217 void audio_ambient_sprite_play( v3f co, audio_clip *clip )
 218 {
 219    audio_lock();
 220    u16 group_id = 0xfff0;
 221    audio_channel *ch = audio_get_group_idle_channel( group_id, 4 );
 222
 223    if( ch ){
 224       audio_channel_init( ch, clip, AUDIO_FLAG_SPACIAL_3D );
 225       audio_channel_group( ch, group_id );
 226       audio_channel_set_spacial( ch, co, 80.0f );
 227       audio_channel_edit_volume( ch, 1.0f, 1 );
 228       ch = audio_relinquish_channel( ch );
 229    }
 230    audio_unlock();
 231 }
 232
 233 enum audio_sprite_type world_audio_sample_sprite_random(v3f origin, v3f output);
 234 void audio_ambient_sprites_update( world_instance *world, v3f co )
 235 {
 236    static float accum = 0.0f;
 237    accum += vg.time_delta;
 238
 239    if( accum > 0.1f )
 240       accum -= 0.1f;
 241    else return;
 242
 243    v3f sprite_pos;
 244    enum audio_sprite_type sprite_type =
 245       world_audio_sample_sprite_random( co, sprite_pos );
 246
 247    if( sprite_type != k_audio_sprite_type_none ){
 248       if( sprite_type == k_audio_sprite_type_grass ){
 249          audio_ambient_sprite_play( sprite_pos,
 250                                     &audio_grass[vg_randu32(&vg.rand)%4] );
 251       }
 252       else if( sprite_type == k_audio_sprite_type_water ){
 253          if( world->water.enabled ){
 254             audio_ambient_sprite_play( sprite_pos,
 255                                        &audio_water[vg_randu32(&vg.rand)%6] );
 256          }
 257       }
 258    }
 259 }