# sound.cpp File Reference

Handling of playing sounds. More...

`#include "stdafx.h"`
`#include "landscape.h"`
`#include "mixer.h"`
`#include "fileio_func.h"`
`#include "newgrf_sound.h"`
`#include "fios.h"`
`#include "window_gui.h"`
`#include "map_func.h"`
`#include "vehicle_base.h"`
`#include "debug.h"`

Go to the source code of this file.

## Defines
#define | PANNING_LEVELS 16
## Functions
static void | OpenBankFile (const char *filename)
uint | GetNumOriginalSounds ()
static bool | SetBankSource (MixerChannel *mc, const FileEntry *fe)
bool | SoundInitialize (const char *filename)
static void | StartSound (uint sound, int panning, uint volume)
| assert_compile (lengthof(_vol_factor_by_zoom)==ZOOM_LVL_COUNT)
void | SndCopyToPool ()
static void | SndPlayScreenCoordFx (SoundFx sound, int left, int right, int top, int bottom)
| Decide 'where' (between left and right speaker) to play the sound effect.
void | SndPlayTileFx (SoundFx sound, TileIndex tile)
void | SndPlayVehicleFx (SoundFx sound, const Vehicle *v)
void | SndPlayFx (SoundFx sound)
## Variables
static uint | _file_count
static FileEntry * | _files
MusicFileSettings | msf
static const uint | ORIGINAL_SAMPLE_COUNT = 73
| The number of sounds in the original sample.cat.
static const byte | _vol_factor_by_zoom [] = {255, 190, 134, 87}
static const byte | _sound_base_vol []
static const byte | _sound_idx []

## Detailed Description

Handling of playing sounds.

Definition in file sound.cpp.

## Function Documentation

static void SndPlayScreenCoordFx | ( | SoundFx | sound,
|  | int | left,
|  | int | right,
|  | int | top,
|  | int | bottom |
| ) |  |  | `[static]`

Decide 'where' (between left and right speaker) to play the sound effect.

Parameters:

  | sound | Sound effect to play
  | left | Left edge of virtual coordinates where the sound is produced
  | right | Right edge of virtual coordinates where the sound is produced
  | top | Top edge of virtual coordinates where the sound is produced
  | bottom | Bottom edge of virtual coordinates where the sound is produced

Definition at line 208 of file sound.cpp.

References Window::viewport, ViewPort::virtual_height, ViewPort::virtual_left, ViewPort::virtual_top, ViewPort::virtual_width, and ViewPort::zoom.

## Variable Documentation

const byte _sound_base_vol[]`[static]`

Initial value:

     {
      128,  90, 128, 128, 128, 128, 128, 128,
      128,  90,  90, 128, 128, 128, 128, 128,
      128, 128, 128,  80, 128, 128, 128, 128,
      128, 128, 128, 128, 128, 128, 128, 128,
      128, 128,  90,  90,  90, 128,  90, 128,
      128,  90, 128, 128, 128,  90, 128, 128,
      128, 128, 128, 128,  90, 128, 128, 128,
      128,  90, 128, 128, 128, 128, 128, 128,
      128, 128,  90,  90,  90, 128, 128, 128,
       90,
    }

Definition at line 162 of file sound.cpp.

const byte _sound_idx[]`[static]`

Initial value:

     {
       2,  3,  4,  5,  6,  7,  8,  9,
      10, 11, 12, 13, 14, 15, 16, 17,
      18, 19, 20, 21, 22, 23, 24, 25,
      26, 27, 28, 29, 30, 31, 32, 33,
      34, 35, 36, 37, 38, 39, 40,  0,
       1, 41, 42, 43, 44, 45, 46, 47,
      48, 49, 50, 51, 52, 53, 54, 55,
      56, 57, 58, 59, 60, 61, 62, 63,
      64, 65, 66, 67, 68, 69, 70, 71,
      72,
    }

Definition at line 175 of file sound.cpp.