player_audio.h

   1 #ifndef PLAYER_AUDIO_H
   2 #define PLAYER_AUDIO_H
   3
   4 #include "player.h"
   5
   6 /*
   7  * Audio
   8  */
   9 static void player_audio(void)
  10 {
  11    struct player_phys *phys = &player.phys;
  12
  13    static int _air = 0;
  14
  15    int l2 = _air;
  16    _air = phys->in_air;
  17
  18    static double last_revert = -2000.0;
  19
  20
  21
  22
  23    audio_lock();
  24
  25    double revert_delta = vg_time - last_revert;
  26    if( phys->on_board && (!_air && l2) && (fabsf(phys->slip) > 0.5f) &&
  27          (revert_delta > 0.7) )
  28    {
  29       audio_player_set_position( &audio_player_extra, phys->rb.co );
  30       audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
  31       audio_player_set_vol( &audio_player_extra, 2.0f );
  32       audio_player_playclip( &audio_player_extra, &audio_lands[rand()%5] );
  33
  34       last_revert = vg_time;
  35    }
  36
  37    static float air = 0.0f;
  38    air = vg_lerpf(air, phys->in_air? 1.0f: 0.0f, 5.0f*ktimestep);
  39
  40    /* Spacial info */
  41    v3f ears = { 1.0f,0.0f,0.0f };
  42    v3f delta;
  43
  44    float *cam = player.camera[3],
  45          *pos = phys->rb.co;
  46
  47    audio_player_set_position( &audio_player0, phys->rb.co );
  48    audio_player_set_position( &audio_player1, phys->rb.co );
  49    audio_player_set_position( &audio_player2, phys->rb.co );
  50    audio_player_set_position( &audio_player_gate, world.render_gate_pos );
  51
  52    v3_sub( phys->rb.co, player.camera[3], delta );
  53    v3_normalize( delta );
  54    m3x3_mulv( player.camera, ears, ears );
  55
  56    /* TODO, Make function */
  57    v3_copy( ears, vg_audio.listener_ears );
  58    v3_copy( player.camera[3], vg_audio.listener_pos );
  59
  60    /* Tunnel / occlusion */
  61    audio_sample_occlusion( player.camera[3] );
  62
  63    int sprite_avail = -1;
  64    for( int i=0; i<vg_list_size(ambient_sprites); i++ )
  65    {
  66       if( !audio_player_is_playing( &ambient_sprites[i] ) )
  67       {
  68          sprite_avail = i;
  69          break;
  70       }
  71    }
  72
  73    if( sprite_avail != -1 )
  74    {
  75       v3f waterpos;
  76       enum audio_sprite_type sprite_type =
  77          audio_sample_sprite_random( phys->rb.co, waterpos );
  78
  79       if( sprite_type != k_audio_sprite_type_none )
  80       {
  81          audio_player *avail = &ambient_sprites[ sprite_avail ];
  82
  83          audio_player_set_vol( avail, 20.0f );
  84          audio_player_set_flags( avail, AUDIO_FLAG_SPACIAL_3D );
  85          audio_player_set_position( avail, waterpos );
  86
  87          if( sprite_type == k_audio_sprite_type_grass )
  88          {
  89             audio_player_playclip( avail, &audio_grass[rand()%4] );
  90          }
  91          else if( sprite_type == k_audio_sprite_type_water )
  92          {
  93             audio_player_playclip( avail, &audio_water[rand()%6] );
  94          }
  95       }
  96    }
  97
  98    if( freecam || player.is_dead || !phys->on_board )
  99    {
 100       audio_player_set_vol( &audio_player0, 0.0f );
 101       audio_player_set_vol( &audio_player1, 0.0f );
 102       audio_player_set_vol( &audio_player2, 0.0f );
 103       audio_player_set_vol( &audio_player3, 0.0f );
 104
 105       int walk_phase = 0;
 106       if( vg_fractf(player.walk_timer) > 0.5f )
 107          walk_phase = 1;
 108       else
 109          walk_phase = 0;
 110
 111       if( (player.step_phase != walk_phase) && !phys->in_air )
 112       {
 113          audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
 114          audio_player_set_position( &audio_player_extra, phys->rb.co );
 115          audio_player_set_vol( &audio_player_extra, 6.0f );
 116          audio_player_playclip( &audio_player_extra,
 117                                           &audio_footsteps[rand()%4] );
 118       }
 119
 120       player.step_phase = walk_phase;
 121    }
 122    else
 123    {
 124       /* Composite */
 125       float speed = vg_minf(v3_length( phys->rb.v )*0.1f,1.0f),
 126             attn  = speed,
 127             slide = vg_clampf( fabsf(phys->slip), 0.0f, 1.0f ),
 128             vol0  = (1.0f-air)*attn*(1.0f-slide),
 129             vol1  =       air *attn,
 130             vol2  = (1.0f-air)*attn*slide;
 131
 132       audio_player_set_vol( &audio_player0, vol0 );
 133       audio_player_set_vol( &audio_player1, vol1 );
 134       audio_player_set_vol( &audio_player2, vol2 );
 135
 136       float reverb_amt = vol0 * audio_occlusion_current * 0.5f;
 137       audio_player_set_pan( &audio_player3, 0.0f );
 138       audio_player_set_vol( &audio_player3, reverb_amt );
 139    }
 140
 141 #if 0
 142    world_audio_update( cam, ears );
 143 #endif
 144    audio_unlock();
 145 }
 146
 147 #endif /* PLAYER_AUDIO_H */