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             if( world.water.enabled )
 107                audio_player_playclip( avail, &audio_water[rand()%6] );
 108          }
 109       }
 110    }
 111
 112    if( freecam || player.is_dead || !phys->on_board )
 113    {
 114       audio_player_set_vol( &audio_player0, 0.0f );
 115       audio_player_set_vol( &audio_player1, 0.0f );
 116       audio_player_set_vol( &audio_player2, 0.0f );
 117       audio_player_set_vol( &audio_player3, 0.0f );
 118
 119       int walk_phase = 0;
 120       if( vg_fractf(player.walk_timer) > 0.5f )
 121          walk_phase = 1;
 122       else
 123          walk_phase = 0;
 124
 125       if( (player.step_phase != walk_phase) && !phys->in_air )
 126       {
 127          audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
 128          audio_player_set_position( &audio_player_extra, phys->rb.co );
 129          audio_player_set_vol( &audio_player_extra, 6.0f );
 130
 131          if( player.surface_prop == k_surface_prop_concrete )
 132          {
 133             audio_player_playclip(
 134               &audio_player_extra,
 135               &audio_footsteps[rand()%vg_list_size(audio_footsteps)]
 136             );
 137          }
 138          else if( player.surface_prop == k_surface_prop_grass )
 139          {
 140             audio_player_playclip(
 141               &audio_player_extra,
 142               &audio_footsteps_grass[rand()%vg_list_size(audio_footsteps_grass)]
 143             );
 144          }
 145          else if( player.surface_prop == k_surface_prop_wood )
 146          {
 147             audio_player_playclip(
 148               &audio_player_extra,
 149               &audio_footsteps_wood[rand()%vg_list_size(audio_footsteps_wood)]
 150             );
 151          }
 152       }
 153
 154       player.step_phase = walk_phase;
 155    }
 156    else
 157    {
 158       /* Composite */
 159       float speed = vg_minf(v3_length( phys->rb.v )*0.1f,1.0f),
 160             attn  = speed,
 161             slide = vg_clampf( fabsf(phys->slip), 0.0f, 1.0f ),
 162             vol0  = (1.0f-air)*attn*(1.0f-slide),
 163             vol1  =       air *attn,
 164             vol2  = (1.0f-air)*attn*slide;
 165
 166       audio_player_set_vol( &audio_player0, vol0*vg.time_rate );
 167       audio_player_set_vol( &audio_player1, vol1*vg.time_rate );
 168       audio_player_set_vol( &audio_player2, vol2*vg.time_rate );
 169
 170       float reverb_amt = vol0 * audio_occlusion_current * 0.5f;
 171       audio_player_set_pan( &audio_player3, 0.0f );
 172       audio_player_set_vol( &audio_player3, reverb_amt*vg.time_rate );
 173    }
 174
 175 #if 0
 176    world_audio_update( cam, ears );
 177 #endif
 178    audio_unlock();
 179
 180    if( player.phys.in_air )
 181       player.air_time += vg.time_delta;
 182    else
 183       player.air_time = 0.0f;
 184
 185 }
 186
 187 #endif /* PLAYER_AUDIO_H */