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 = camera_pos,
  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_player_gate, world.render_gate_pos );
  63    audio_player_set_vol( &audio_player_gate, 5.0f );
  64
  65    v3_sub( phys->rb.co, camera_pos, delta );
  66    v3_normalize( delta );
  67    m3x3_mulv( camera_mtx, ears, ears );
  68
  69    /* TODO, Make function */
  70    v3_copy( ears, vg_audio.listener_ears );
  71    v3_copy( camera_pos, vg_audio.listener_pos );
  72
  73    /* Tunnel / occlusion */
  74    audio_sample_occlusion( camera_pos );
  75
  76    int sprite_avail = -1;
  77    for( int i=0; i<vg_list_size(ambient_sprites); i++ )
  78    {
  79       if( !audio_player_is_playing( &ambient_sprites[i] ) )
  80       {
  81          sprite_avail = i;
  82          break;
  83       }
  84    }
  85
  86    if( sprite_avail != -1 )
  87    {
  88       v3f waterpos;
  89       enum audio_sprite_type sprite_type =
  90          audio_sample_sprite_random( phys->rb.co, waterpos );
  91
  92       if( sprite_type != k_audio_sprite_type_none )
  93       {
  94          audio_player *avail = &ambient_sprites[ sprite_avail ];
  95
  96          audio_player_set_vol( avail, 20.0f );
  97          audio_player_set_flags( avail, AUDIO_FLAG_SPACIAL_3D );
  98          audio_player_set_position( avail, waterpos );
  99
 100          if( sprite_type == k_audio_sprite_type_grass )
 101          {
 102             audio_player_playclip( avail, &audio_grass[rand()%4] );
 103          }
 104          else if( sprite_type == k_audio_sprite_type_water )
 105          {
 106             audio_player_playclip( avail, &audio_water[rand()%6] );
 107          }
 108       }
 109    }
 110
 111    if( freecam || player.is_dead || !phys->on_board )
 112    {
 113       audio_player_set_vol( &audio_player0, 0.0f );
 114       audio_player_set_vol( &audio_player1, 0.0f );
 115       audio_player_set_vol( &audio_player2, 0.0f );
 116       audio_player_set_vol( &audio_player3, 0.0f );
 117
 118       int walk_phase = 0;
 119       if( vg_fractf(player.walk_timer) > 0.5f )
 120          walk_phase = 1;
 121       else
 122          walk_phase = 0;
 123
 124       if( (player.step_phase != walk_phase) && !phys->in_air )
 125       {
 126          audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
 127          audio_player_set_position( &audio_player_extra, phys->rb.co );
 128          audio_player_set_vol( &audio_player_extra, 6.0f );
 129          audio_player_playclip( &audio_player_extra,
 130                                           &audio_footsteps[rand()%4] );
 131       }
 132
 133       player.step_phase = walk_phase;
 134    }
 135    else
 136    {
 137       /* Composite */
 138       float speed = vg_minf(v3_length( phys->rb.v )*0.1f,1.0f),
 139             attn  = speed,
 140             slide = vg_clampf( fabsf(phys->slip), 0.0f, 1.0f ),
 141             vol0  = (1.0f-air)*attn*(1.0f-slide),
 142             vol1  =       air *attn,
 143             vol2  = (1.0f-air)*attn*slide;
 144
 145       audio_player_set_vol( &audio_player0, vol0*vg.time_rate );
 146       audio_player_set_vol( &audio_player1, vol1*vg.time_rate );
 147       audio_player_set_vol( &audio_player2, vol2*vg.time_rate );
 148
 149       float reverb_amt = vol0 * audio_occlusion_current * 0.5f;
 150       audio_player_set_pan( &audio_player3, 0.0f );
 151       audio_player_set_vol( &audio_player3, reverb_amt*vg.time_rate );
 152    }
 153
 154 #if 0
 155    world_audio_update( cam, ears );
 156 #endif
 157    audio_unlock();
 158
 159    if( player.phys.in_air )
 160       player.air_time += vg.time_delta;
 161    else
 162       player.air_time = 0.0f;
 163
 164 }
 165
 166 #endif /* PLAYER_AUDIO_H */