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    static int _ding = 0;
  12
  13    int last = _ding;
  14    _ding = glfwGetKey(vg_window, GLFW_KEY_C);
  15
  16    int trigger_ding = 0;
  17    if( _ding && !last )
  18       trigger_ding = 1;
  19
  20    static int _air = 0;
  21
  22    int l2 = _air;
  23    _air = player.in_air;
  24
  25    static double last_revert = -2000.0;
  26
  27
  28
  29
  30    audio_lock();
  31
  32    double revert_delta = vg_time - last_revert;
  33    if( player.on_board && (!_air && l2) && (fabsf(player.slip) > 0.5f) &&
  34          (revert_delta > 0.7) )
  35    {
  36       audio_player_set_position( &audio_player_extra, player.rb.co );
  37       audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
  38       audio_player_set_vol( &audio_player_extra, 2.0f );
  39       audio_player_playclip( &audio_player_extra, &audio_lands[rand()%5] );
  40
  41       last_revert = vg_time;
  42    }
  43
  44    static float air = 0.0f;
  45    air = vg_lerpf(air, player.in_air? 1.0f: 0.0f, 5.0f*ktimestep);
  46
  47    /* Spacial info */
  48    v3f ears = { 1.0f,0.0f,0.0f };
  49    v3f delta;
  50
  51    float *cam = player.camera[3],
  52          *pos = player.rb.co;
  53
  54    if( trigger_ding )
  55       audio_player_playclip( &audio_player_extra, &audio_ding );
  56
  57    audio_player_set_position( &audio_player0, player.rb.co );
  58    audio_player_set_position( &audio_player1, player.rb.co );
  59    audio_player_set_position( &audio_player2, player.rb.co );
  60    audio_player_set_position( &audio_player_gate, world.render_gate_pos );
  61
  62    v3_sub( player.rb.co, player.camera[3], delta );
  63    v3_normalize( delta );
  64    m3x3_mulv( player.camera, ears, ears );
  65
  66    /* TODO, Make function */
  67    v3_copy( ears, vg_audio.listener_ears );
  68    v3_copy( player.camera[3], vg_audio.listener_pos );
  69
  70    /* Tunnel / occlusion */
  71    audio_sample_occlusion( player.camera[3] );
  72
  73    int sprite_avail = -1;
  74    for( int i=0; i<vg_list_size(ambient_sprites); i++ )
  75    {
  76       if( !audio_player_is_playing( &ambient_sprites[i] ) )
  77       {
  78          sprite_avail = i;
  79          break;
  80       }
  81    }
  82
  83    if( sprite_avail != -1 )
  84    {
  85       v3f waterpos;
  86       enum audio_sprite_type sprite_type =
  87          audio_sample_sprite_random( player.rb.co, waterpos );
  88
  89       if( sprite_type != k_audio_sprite_type_none )
  90       {
  91          audio_player *avail = &ambient_sprites[ sprite_avail ];
  92
  93          audio_player_set_vol( avail, 20.0f );
  94          audio_player_set_flags( avail, AUDIO_FLAG_SPACIAL_3D );
  95          audio_player_set_position( avail, waterpos );
  96
  97          if( sprite_type == k_audio_sprite_type_grass )
  98          {
  99             audio_player_playclip( avail, &audio_grass[rand()%4] );
 100          }
 101          else if( sprite_type == k_audio_sprite_type_water )
 102          {
 103             audio_player_playclip( avail, &audio_water[rand()%6] );
 104          }
 105       }
 106    }
 107
 108    if( freecam || player.is_dead || !player.on_board )
 109    {
 110       audio_player_set_vol( &audio_player0, 0.0f );
 111       audio_player_set_vol( &audio_player1, 0.0f );
 112       audio_player_set_vol( &audio_player2, 0.0f );
 113
 114       int walk_phase = 0;
 115       if( vg_fractf(player.walk_timer) > 0.5f )
 116          walk_phase = 1;
 117       else
 118          walk_phase = 0;
 119
 120       if( (player.step_phase != walk_phase) && !player.in_air )
 121       {
 122          audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
 123          audio_player_set_position( &audio_player_extra, player.rb.co );
 124          audio_player_set_vol( &audio_player_extra, 6.0f );
 125          audio_player_playclip( &audio_player_extra,
 126                                           &audio_footsteps[rand()%4] );
 127       }
 128
 129       player.step_phase = walk_phase;
 130    }
 131    else
 132    {
 133       /* Composite */
 134       float speed = vg_minf(v3_length( player.rb.v )*0.1f,1.0f),
 135             attn  = speed,
 136             slide = vg_clampf( fabsf(player.slip), 0.0f, 1.0f ),
 137             vol0  = (1.0f-air)*attn*(1.0f-slide),
 138             vol1  =       air *attn,
 139             vol2  = (1.0f-air)*attn*slide;
 140
 141       audio_player_set_vol( &audio_player0, vol0 );
 142       audio_player_set_vol( &audio_player1, vol1 );
 143       audio_player_set_vol( &audio_player2, vol2 );
 144
 145       float reverb_amt = vol0 * audio_occlusion_current * 0.5f;
 146       audio_player_set_pan( &audio_player3, 0.0f );
 147       audio_player_set_vol( &audio_player3, reverb_amt );
 148    }
 149
 150 #if 0
 151    world_audio_update( cam, ears );
 152 #endif
 153    audio_unlock();
 154 }
 155
 156 #endif /* PLAYER_AUDIO_H */