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