player_audio.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #ifndef PLAYER_AUDIO_H
   6 #define PLAYER_AUDIO_H
   7
   8 #include "player.h"
   9
  10 /*
  11  * Audio
  12  */
  13 VG_STATIC void player_audio(void)
  14 {
  15    struct player_phys *phys = &player.phys;
  16
  17    static int _air = 0;
  18
  19    int l2 = _air;
  20    _air = phys->in_air;
  21
  22    static double last_revert = -2000.0;
  23
  24
  25
  26
  27    audio_lock();
  28
  29    double revert_delta = vg.time - last_revert;
  30    if( phys->on_board && (!_air && l2) && (revert_delta > 0.7) &&
  31        (player.air_time > 0.5f) )
  32    {
  33       audio_player_set_position( &audio_player_extra, phys->rb.co );
  34       audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
  35       audio_player_set_vol( &audio_player_extra, 2.0f );
  36
  37       if( (fabsf(phys->slip) > 0.75f) )
  38       {
  39          audio_player_playclip( &audio_player_extra, &audio_lands[rand()%2+3] );
  40       }
  41       else
  42       {
  43          audio_player_playclip( &audio_player_extra, &audio_lands[rand()%3] );
  44       }
  45
  46       last_revert = vg.time;
  47    }
  48
  49    static float air = 0.0f;
  50    air = vg_lerpf( air, phys->in_air? 1.0f: 0.0f, 5.0f*vg.time_delta );
  51
  52    /* Spacial info */
  53    v3f ears = { 1.0f,0.0f,0.0f };
  54    v3f delta;
  55
  56    float *cam = main_camera.transform[3],
  57          *pos = phys->rb.co;
  58
  59    audio_player_set_position( &audio_player0, phys->rb.co );
  60    audio_player_set_position( &audio_player1, phys->rb.co );
  61    audio_player_set_position( &audio_player2, phys->rb.co );
  62    audio_player_set_position( &audio_player4, phys->rb.co );
  63    audio_player_set_position( &audio_player_gate, world.render_gate_pos );
  64    audio_player_set_vol( &audio_player_gate, 5.0f );
  65
  66    v3_sub( phys->rb.co, main_camera.transform[3], delta );
  67    v3_normalize( delta );
  68    m3x3_mulv( main_camera.transform, ears, ears );
  69
  70    /* TODO, Make function */
  71    v3_copy( ears, vg_audio.listener_ears );
  72    v3_copy( main_camera.transform[3], vg_audio.listener_pos );
  73
  74    /* Tunnel / occlusion */
  75    audio_sample_occlusion( main_camera.transform[3] );
  76
  77    int sprite_avail = -1;
  78    for( int i=0; i<vg_list_size(ambient_sprites); i++ )
  79    {
  80       if( !audio_player_is_playing( &ambient_sprites[i] ) )
  81       {
  82          sprite_avail = i;
  83          break;
  84       }
  85    }
  86
  87    if( sprite_avail != -1 )
  88    {
  89       v3f waterpos;
  90       enum audio_sprite_type sprite_type =
  91          audio_sample_sprite_random( phys->rb.co, waterpos );
  92
  93       if( sprite_type != k_audio_sprite_type_none )
  94       {
  95          audio_player *avail = &ambient_sprites[ sprite_avail ];
  96
  97          audio_player_set_vol( avail, 20.0f );
  98          audio_player_set_flags( avail, AUDIO_FLAG_SPACIAL_3D );
  99          audio_player_set_position( avail, waterpos );
 100
 101          if( sprite_type == k_audio_sprite_type_grass )
 102          {
 103             audio_player_playclip( avail, &audio_grass[rand()%4] );
 104          }
 105          else if( sprite_type == k_audio_sprite_type_water )
 106          {
 107             if( world.water.enabled )
 108                audio_player_playclip( avail, &audio_water[rand()%6] );
 109          }
 110       }
 111    }
 112
 113    if( freecam || player.is_dead || !phys->on_board )
 114    {
 115       audio_player_set_vol( &audio_player0, 0.0f );
 116       audio_player_set_vol( &audio_player1, 0.0f );
 117       audio_player_set_vol( &audio_player2, 0.0f );
 118       audio_player_set_vol( &audio_player3, 0.0f );
 119       audio_player_set_vol( &audio_player4, 0.0f );
 120
 121       int walk_phase = 0;
 122       if( vg_fractf(player.walk_timer) > 0.5f )
 123          walk_phase = 1;
 124       else
 125          walk_phase = 0;
 126
 127       if( (player.step_phase != walk_phase) && !phys->in_air )
 128       {
 129          audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
 130          audio_player_set_position( &audio_player_extra, phys->rb.co );
 131          audio_player_set_vol( &audio_player_extra, 6.0f );
 132
 133          if( player.surface_prop == k_surface_prop_concrete )
 134          {
 135             audio_player_playclip(
 136               &audio_player_extra,
 137               &audio_footsteps[rand()%vg_list_size(audio_footsteps)]
 138             );
 139          }
 140          else if( player.surface_prop == k_surface_prop_grass )
 141          {
 142             audio_player_playclip(
 143               &audio_player_extra,
 144               &audio_footsteps_grass[rand()%vg_list_size(audio_footsteps_grass)]
 145             );
 146          }
 147          else if( player.surface_prop == k_surface_prop_wood )
 148          {
 149             audio_player_playclip(
 150               &audio_player_extra,
 151               &audio_footsteps_wood[rand()%vg_list_size(audio_footsteps_wood)]
 152             );
 153          }
 154       }
 155
 156       player.step_phase = walk_phase;
 157    }
 158    else
 159    {
 160       /* Composite */
 161       float speed = vg_minf(v3_length( phys->rb.v )*0.1f,1.0f),
 162             attn  = speed,
 163             slide = vg_clampf( fabsf(phys->slip), 0.0f, 1.0f ),
 164             grind = phys->grind,
 165             vol0  = (1.0f-air)*attn*(1.0f-slide)*(1.0f-grind),
 166             vol1  =       air *attn*(1.0f-grind),
 167             vol2  = (1.0f-air)*attn*slide*(1.0f-grind),
 168             vol4  = grind*2.0f;
 169
 170       audio_player_set_vol( &audio_player0, vol0*vg.time_rate );
 171       audio_player_set_vol( &audio_player1, vol1*vg.time_rate );
 172       audio_player_set_vol( &audio_player2, vol2*vg.time_rate );
 173       audio_player_set_vol( &audio_player4, vol4*vg.time_rate );
 174
 175       float reverb_amt = vol0 * audio_occlusion_current * 0.5f;
 176
 177       audio_player_set_pan( &audio_player3, 0.0f );
 178       audio_player_set_vol( &audio_player3, reverb_amt*vg.time_rate );
 179    }
 180
 181 #if 0
 182    world_audio_update( cam, ears );
 183 #endif
 184    audio_unlock();
 185
 186    if( player.phys.in_air )
 187       player.air_time += vg.time_delta;
 188    else
 189       player.air_time = 0.0f;
 190
 191 }
 192
 193 #endif /* PLAYER_AUDIO_H */