player_audio.h

   1 /*
   2  * Copyright 2021-2022 (C) Mount0 Software, Harry Godden - All Rights Reserved
   3  * -----------------------------------------------------------------------------
   4  *
   5  * Player audio
   6  *
   7  * -----------------------------------------------------------------------------
   8  */
   9
  10 #ifndef PLAYER_AUDIO_H
  11 #define PLAYER_AUDIO_H
  12
  13 #include "player.h"
  14
  15 /*
  16  * Audio
  17  */
  18 static void player_audio(void)
  19 {
  20    struct player_phys *phys = &player.phys;
  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    audio_player_set_position( &audio_player0, phys->rb.co );
  57    audio_player_set_position( &audio_player1, phys->rb.co );
  58    audio_player_set_position( &audio_player2, phys->rb.co );
  59    audio_player_set_position( &audio_player_gate, world.render_gate_pos );
  60    audio_player_set_vol( &audio_player_gate, 5.0f );
  61
  62    v3_sub( phys->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( phys->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 || !phys->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       audio_player_set_vol( &audio_player3, 0.0f );
 114
 115       int walk_phase = 0;
 116       if( vg_fractf(player.walk_timer) > 0.5f )
 117          walk_phase = 1;
 118       else
 119          walk_phase = 0;
 120
 121       if( (player.step_phase != walk_phase) && !phys->in_air )
 122       {
 123          audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
 124          audio_player_set_position( &audio_player_extra, phys->rb.co );
 125          audio_player_set_vol( &audio_player_extra, 6.0f );
 126          audio_player_playclip( &audio_player_extra,
 127                                           &audio_footsteps[rand()%4] );
 128       }
 129
 130       player.step_phase = walk_phase;
 131    }
 132    else
 133    {
 134       /* Composite */
 135       float speed = vg_minf(v3_length( phys->rb.v )*0.1f,1.0f),
 136             attn  = speed,
 137             slide = vg_clampf( fabsf(phys->slip), 0.0f, 1.0f ),
 138             vol0  = (1.0f-air)*attn*(1.0f-slide),
 139             vol1  =       air *attn,
 140             vol2  = (1.0f-air)*attn*slide;
 141
 142       audio_player_set_vol( &audio_player0, vol0 );
 143       audio_player_set_vol( &audio_player1, vol1 );
 144       audio_player_set_vol( &audio_player2, vol2 );
 145
 146       float reverb_amt = vol0 * audio_occlusion_current * 0.5f;
 147       audio_player_set_pan( &audio_player3, 0.0f );
 148       audio_player_set_vol( &audio_player3, reverb_amt );
 149    }
 150
 151 #if 0
 152    world_audio_update( cam, ears );
 153 #endif
 154    audio_unlock();
 155 }
 156
 157 #endif /* PLAYER_AUDIO_H */