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Sound.md

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Sound

TODO

void  MarkSound(sound snd);
void  SetMusicVolume(float vol);
bool  S_ChangeMusic(string name, int order = 0, bool looping = true, bool force = false);
float S_GetLength(sound id);
void  S_PauseSound(bool notmusic, bool notsfx);
void  S_ResumeSound(bool notsfx);
void  S_Sound(sound id, int channel, float volume = 1, float attenuation = ATTN_NORM);

MarkSound

Marks snd to be pre-cached (loaded into memory early.)

SetMusicVolume

Sets the volume of the music relative to the user's volume. Range is 0-1, inclusive.

S_ChangeMusic

Changes the music to name. If name is "*", the music will be set to the default music for this level. Will loop if looping is true. force will force the music to play even if a playlist (from the playlist console command) is playing.

order may mean something different based on the music format:

Format Meaning
Tracker music (.mod, .xm, etc.) Specifies the order the song will start at.
Multi-track .ogg, .flac, etc. Specifies the track to begin playing at.
Any other format No meaning, will be ignored.

S_GetLength

Returns the length of a sound in seconds. Potentially non-deterministic if all users in a networked game are not using the same sounds.

S_PauseSound

Pauses music if notmusic is false and all game sounds if notsfx is false. Used for instance in the time stop power-up.

S_ResumeSound

Resumes playing music and, if notsfx is false, all game sounds as well.

S_Sound

Plays a sound (as defined in SNDINFO) from the calling object if it has world presence (is an actor or sector etc.)

channel may be:

Name Description
CHAN_AUTO Automatically assigns the sound to a free channel (if one exists.)
CHAN_BODY For footsteps and generally anything else.
CHAN_ITEM For item pickups.
CHAN_VOICE For player grunts.
CHAN_WEAPON For weapon noises.
CHAN_5 Extra sound channel.
CHAN_6 Extra sound channel.
CHAN_7 Extra sound channel.

channel may also have the following flags applied with the binary OR operator |:

Name Description
CHAN_LISTENERZ Sound ignores height entirely, playing at the listener's vertical position.
CHAN_LOOP Continues playing the sound on loop until it is stopped manually.
CHAN_MAYBE_LOCAL Does not play sound to other players if the silent pickup compatibility flag is enabled.
CHAN_NOPAUSE Does not pause in menus or when S_PauseSound is called.
CHAN_NOSTOP Does not start a new sound if the channel is already playing something.
CHAN_UI Does not record sound in saved games or demos.

Additionally, CHAN_PICKUP is equivalent to CHAN_ITEM | CHAN_MAYBE_LOCAL.

attenuation determines the drop-off distance of the sound. The higher the value, the quicker it fades. Constants include:

Name Value Description
ATTN_IDLE 1.001 Uses Doom's default sound attenuation.
ATTN_NONE 0 Does not drop off at all, plays throughout the whole map.
ATTN_NORM 1 Drops off using the close_dist and clipping_dist defined in SNDINFO. Default.
ATTN_STATIC 3 Drops off quickly, at around 512 units.