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 _ding = 0;
  14
  15    int last = _ding;
  16    _ding = glfwGetKey(vg_window, GLFW_KEY_C);
  17
  18    int trigger_ding = 0;
  19    if( _ding && !last )
  20       trigger_ding = 1;
  21
  22    static int _air = 0;
  23
  24    int l2 = _air;
  25    _air = phys->in_air;
  26
  27    static double last_revert = -2000.0;
  28
  29
  30
  31
  32    audio_lock();
  33
  34    double revert_delta = vg_time - last_revert;
  35    if( phys->on_board && (!_air && l2) && (fabsf(phys->slip) > 0.5f) &&
  36          (revert_delta > 0.7) )
  37    {
  38       audio_player_set_position( &audio_player_extra, phys->rb.co );
  39       audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
  40       audio_player_set_vol( &audio_player_extra, 2.0f );
  41       audio_player_playclip( &audio_player_extra, &audio_lands[rand()%5] );
  42
  43       last_revert = vg_time;
  44    }
  45
  46    static float air = 0.0f;
  47    air = vg_lerpf(air, phys->in_air? 1.0f: 0.0f, 5.0f*ktimestep);
  48
  49    /* Spacial info */
  50    v3f ears = { 1.0f,0.0f,0.0f };
  51    v3f delta;
  52
  53    float *cam = player.camera[3],
  54          *pos = phys->rb.co;
  55
  56    if( trigger_ding )
  57       audio_player_playclip( &audio_player_extra, &audio_ding );
  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_player_gate, world.render_gate_pos );
  63
  64    v3_sub( phys->rb.co, player.camera[3], delta );
  65    v3_normalize( delta );
  66    m3x3_mulv( player.camera, ears, ears );
  67
  68    /* TODO, Make function */
  69    v3_copy( ears, vg_audio.listener_ears );
  70    v3_copy( player.camera[3], vg_audio.listener_pos );
  71
  72    /* Tunnel / occlusion */
  73    audio_sample_occlusion( player.camera[3] );
  74
  75    int sprite_avail = -1;
  76    for( int i=0; i<vg_list_size(ambient_sprites); i++ )
  77    {
  78       if( !audio_player_is_playing( &ambient_sprites[i] ) )
  79       {
  80          sprite_avail = i;
  81          break;
  82       }
  83    }
  84
  85    if( sprite_avail != -1 )
  86    {
  87       v3f waterpos;
  88       enum audio_sprite_type sprite_type =
  89          audio_sample_sprite_random( phys->rb.co, waterpos );
  90
  91       if( sprite_type != k_audio_sprite_type_none )
  92       {
  93          audio_player *avail = &ambient_sprites[ sprite_avail ];
  94
  95          audio_player_set_vol( avail, 20.0f );
  96          audio_player_set_flags( avail, AUDIO_FLAG_SPACIAL_3D );
  97          audio_player_set_position( avail, waterpos );
  98
  99          if( sprite_type == k_audio_sprite_type_grass )
 100          {
 101             audio_player_playclip( avail, &audio_grass[rand()%4] );
 102          }
 103          else if( sprite_type == k_audio_sprite_type_water )
 104          {
 105             audio_player_playclip( avail, &audio_water[rand()%6] );
 106          }
 107       }
 108    }
 109
 110    if( freecam || player.is_dead || !phys->on_board )
 111    {
 112       audio_player_set_vol( &audio_player0, 0.0f );
 113       audio_player_set_vol( &audio_player1, 0.0f );
 114       audio_player_set_vol( &audio_player2, 0.0f );
 115
 116       int walk_phase = 0;
 117       if( vg_fractf(player.walk_timer) > 0.5f )
 118          walk_phase = 1;
 119       else
 120          walk_phase = 0;
 121
 122       if( (player.step_phase != walk_phase) && !phys->in_air )
 123       {
 124          audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
 125          audio_player_set_position( &audio_player_extra, phys->rb.co );
 126          audio_player_set_vol( &audio_player_extra, 6.0f );
 127          audio_player_playclip( &audio_player_extra,
 128                                           &audio_footsteps[rand()%4] );
 129       }
 130
 131       player.step_phase = walk_phase;
 132    }
 133    else
 134    {
 135       /* Composite */
 136       float speed = vg_minf(v3_length( phys->rb.v )*0.1f,1.0f),
 137             attn  = speed,
 138             slide = vg_clampf( fabsf(phys->slip), 0.0f, 1.0f ),
 139             vol0  = (1.0f-air)*attn*(1.0f-slide),
 140             vol1  =       air *attn,
 141             vol2  = (1.0f-air)*attn*slide;
 142
 143       audio_player_set_vol( &audio_player0, vol0 );
 144       audio_player_set_vol( &audio_player1, vol1 );
 145       audio_player_set_vol( &audio_player2, vol2 );
 146
 147       float reverb_amt = vol0 * audio_occlusion_current * 0.5f;
 148       audio_player_set_pan( &audio_player3, 0.0f );
 149       audio_player_set_vol( &audio_player3, reverb_amt );
 150    }
 151
 152 #if 0
 153    world_audio_update( cam, ears );
 154 #endif
 155    audio_unlock();
 156 }
 157
 158 #endif /* PLAYER_AUDIO_H */