// SND_PaintChannelFrom8
static void PaintChannelFrom8(channel_t ch, sfxcache_t sc, int count)
{
if (ch.leftvol > 255)
{
ch.leftvol = 255;
}
if (ch.rightvol > 255)
{
ch.rightvol = 255;
}
int lscale = ch.leftvol >> 3;
int rscale = ch.rightvol >> 3;
byte[] sfx = sc.data;
int offset = ch.pos;
for (int i = 0; i < count; i++)
{
int data = sfx[offset + i];
_PaintBuffer[i].left += _ScaleTable[lscale, data];
_PaintBuffer[i].right += _ScaleTable[rscale, data];
}
ch.pos += count;
}
// S_UpdateAmbientSounds
static void UpdateAmbientSounds()
{
if (!_Ambient)
{
return;
}
// calc ambient sound levels
if (Client.cl.worldmodel == null)
{
return;
}
mleaf_t l = Mod.PointInLeaf(ref _ListenerOrigin, Client.cl.worldmodel);
if (l == null || _AmbientLevel.Value == 0)
{
for (int i = 0; i < Ambients.NUM_AMBIENTS; i++)
{
_Channels[i].sfx = null;
}
return;
}
for (int i = 0; i < Ambients.NUM_AMBIENTS; i++)
{
channel_t chan = _Channels[i];
chan.sfx = _AmbientSfx[i];
float vol = _AmbientLevel.Value * l.ambient_sound_level[i];
if (vol < 8)
{
vol = 0;
}
// don't adjust volume too fast
if (chan.master_vol < vol)
{
chan.master_vol += (int)(Host.FrameTime * _AmbientFade.Value);
if (chan.master_vol > vol)
{
chan.master_vol = (int)vol;
}
}
else if (chan.master_vol > vol)
{
chan.master_vol -= (int)(Host.FrameTime * _AmbientFade.Value);
if (chan.master_vol < vol)
{
chan.master_vol = (int)vol;
}
}
chan.leftvol = chan.rightvol = chan.master_vol;
}
}
// SND_Spatialize
static void Spatialize(channel_t ch)
{
// anything coming from the view entity will allways be full volume
if (ch.entnum == Client.cl.viewentity)
{
ch.leftvol = ch.master_vol;
ch.rightvol = ch.master_vol;
return;
}
// calculate stereo seperation and distance attenuation
sfx_t snd = ch.sfx;
Vector3 source_vec = ch.origin - _ListenerOrigin;
float dist = Mathlib.Normalize(ref source_vec) * ch.dist_mult;
float dot = Vector3.Dot(_ListenerRight, source_vec);
float rscale, lscale;
if (_shm.channels == 1)
{
rscale = 1.0f;
lscale = 1.0f;
}
else
{
rscale = 1.0f + dot;
lscale = 1.0f - dot;
}
// add in distance effect
float scale = (1.0f - dist) * rscale;
ch.rightvol = (int)(ch.master_vol * scale);
if (ch.rightvol < 0)
{
ch.rightvol = 0;
}
scale = (1.0f - dist) * lscale;
ch.leftvol = (int)(ch.master_vol * scale);
if (ch.leftvol < 0)
{
ch.leftvol = 0;
}
}
// SND_PaintChannelFrom16
static void PaintChannelFrom16(channel_t ch, sfxcache_t sc, int count)
{
int leftvol = ch.leftvol;
int rightvol = ch.rightvol;
byte[] sfx = sc.data;
int offset = ch.pos * 2; // sfx = (signed short *)sc->data + ch->pos;
for (int i = 0; i < count; i++)
{
int data = (short)((ushort)sfx[offset] + ((ushort)sfx[offset + 1] << 8)); // Uze: check is this is right!!!
int left = (data * leftvol) >> 8;
int right = (data * rightvol) >> 8;
_PaintBuffer[i].left += left;
_PaintBuffer[i].right += right;
offset += 2;
}
ch.pos += count;
}
// S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
public static void StaticSound(sfx_t sfx, ref Vector3 origin, float vol, float attenuation)
{
if (sfx == null)
{
return;
}
if (_TotalChannels == MAX_CHANNELS)
{
Con.Print("total_channels == MAX_CHANNELS\n");
return;
}
channel_t ss = _Channels[_TotalChannels];
_TotalChannels++;
sfxcache_t sc = LoadSound(sfx);
if (sc == null)
{
return;
}
if (sc.loopstart == -1)
{
Con.Print("Sound {0} not looped\n", sfx.name);
return;
}
ss.sfx = sfx;
ss.origin = origin;
ss.master_vol = (int)vol;
ss.dist_mult = (attenuation / 64) / _SoundNominalClipDist;
ss.end = _PaintedTime + sc.length;
Spatialize(ss);
}
// S_Init (void)
public static void Init()
{
Con.Print("\nSound Initialization\n");
if (Common.HasParam("-nosound"))
{
return;
}
for (int i = 0; i < _Channels.Length; i++)
{
_Channels[i] = new channel_t();
}
Cmd.Add("play", Play);
Cmd.Add("playvol", PlayVol);
Cmd.Add("stopsound", StopAllSoundsCmd);
Cmd.Add("soundlist", SoundList);
Cmd.Add("soundinfo", SoundInfo_f);
_IsInitialized = true;
Startup();
InitScaletable();
_NumSfx = 0;
Con.Print("Sound sampling rate: {0}\n", _shm.speed);
// provides a tick sound until washed clean
_AmbientSfx[Ambients.AMBIENT_WATER] = PrecacheSound("ambience/water1.wav");
_AmbientSfx[Ambients.AMBIENT_SKY] = PrecacheSound("ambience/wind2.wav");
StopAllSounds(true);
}
// S_PaintChannels
static void PaintChannels(int endtime)
{
while (_PaintedTime < endtime)
{
// if paintbuffer is smaller than DMA buffer
int end = endtime;
if (endtime - _PaintedTime > PAINTBUFFER_SIZE)
{
end = _PaintedTime + PAINTBUFFER_SIZE;
}
// clear the paint buffer
Array.Clear(_PaintBuffer, 0, end - _PaintedTime);
// paint in the channels.
for (int i = 0; i < _TotalChannels; i++)
{
channel_t ch = _Channels[i];
if (ch.sfx == null)
{
continue;
}
if (ch.leftvol == 0 && ch.rightvol == 0)
{
continue;
}
sfxcache_t sc = LoadSound(ch.sfx);
if (sc == null)
{
continue;
}
int count, ltime = _PaintedTime;
while (ltime < end)
{
// paint up to end
if (ch.end < end)
{
count = ch.end - ltime;
}
else
{
count = end - ltime;
}
if (count > 0)
{
if (sc.width == 1)
{
PaintChannelFrom8(ch, sc, count);
}
else
{
PaintChannelFrom16(ch, sc, count);
}
ltime += count;
}
// if at end of loop, restart
if (ltime >= ch.end)
{
if (sc.loopstart >= 0)
{
ch.pos = sc.loopstart;
ch.end = ltime + sc.length - ch.pos;
}
else
{ // channel just stopped
ch.sfx = null;
break;
}
}
}
}
// transfer out according to DMA format
TransferPaintBuffer(end);
_PaintedTime = end;
}
}
// void S_Update (vec3_t origin, vec3_t v_forward, vec3_t v_right, vec3_t v_up)
//
// Called once each time through the main loop
public static void Update(ref Vector3 origin, ref Vector3 forward, ref Vector3 right, ref Vector3 up)
{
if (!_IsInitialized || (_SoundBlocked > 0))
{
return;
}
_ListenerOrigin = origin;
_ListenerForward = forward;
_ListenerRight = right;
_ListenerUp = up;
// update general area ambient sound sources
UpdateAmbientSounds();
channel_t combine = null;
// update spatialization for static and dynamic sounds
//channel_t ch = channels + NUM_AMBIENTS;
for (int i = Ambients.NUM_AMBIENTS; i < _TotalChannels; i++)
{
channel_t ch = _Channels[i];// channels + NUM_AMBIENTS;
if (ch.sfx == null)
{
continue;
}
Spatialize(ch); // respatialize channel
if (ch.leftvol == 0 && ch.rightvol == 0)
{
continue;
}
// try to combine static sounds with a previous channel of the same
// sound effect so we don't mix five torches every frame
if (i >= MAX_DYNAMIC_CHANNELS + Ambients.NUM_AMBIENTS)
{
// see if it can just use the last one
if (combine != null && combine.sfx == ch.sfx)
{
combine.leftvol += ch.leftvol;
combine.rightvol += ch.rightvol;
ch.leftvol = ch.rightvol = 0;
continue;
}
// search for one
combine = _Channels[MAX_DYNAMIC_CHANNELS + Ambients.NUM_AMBIENTS];// channels + MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
int j;
for (j = MAX_DYNAMIC_CHANNELS + Ambients.NUM_AMBIENTS; j < i; j++)
{
combine = _Channels[j];
if (combine.sfx == ch.sfx)
{
break;
}
}
if (j == _TotalChannels)
{
combine = null;
}
else
{
if (combine != ch)
{
combine.leftvol += ch.leftvol;
combine.rightvol += ch.rightvol;
ch.leftvol = ch.rightvol = 0;
}
continue;
}
}
}
//
// debugging output
//
if (_Show.Value != 0)
{
int total = 0;
for (int i = 0; i < _TotalChannels; i++)
{
channel_t ch = _Channels[i];
if (ch.sfx != null && (ch.leftvol > 0 || ch.rightvol > 0))
{
total++;
}
}
Con.Print("----({0})----\n", total);
}
// mix some sound
Update();
}
// S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
public static void StartSound(int entnum, int entchannel, sfx_t sfx, ref Vector3 origin, float fvol, float attenuation)
{
if (!_SoundStarted || sfx == null)
{
return;
}
if (_NoSound.Value != 0)
{
return;
}
int vol = (int)(fvol * 255);
// pick a channel to play on
channel_t target_chan = PickChannel(entnum, entchannel);
if (target_chan == null)
{
return;
}
// spatialize
//memset (target_chan, 0, sizeof(*target_chan));
target_chan.origin = origin;
target_chan.dist_mult = attenuation / _SoundNominalClipDist;
target_chan.master_vol = vol;
target_chan.entnum = entnum;
target_chan.entchannel = entchannel;
Spatialize(target_chan);
if (target_chan.leftvol == 0 && target_chan.rightvol == 0)
{
return; // not audible at all
}
// new channel
sfxcache_t sc = LoadSound(sfx);
if (sc == null)
{
target_chan.sfx = null;
return; // couldn't load the sound's data
}
target_chan.sfx = sfx;
target_chan.pos = 0;
target_chan.end = _PaintedTime + sc.length;
// if an identical sound has also been started this frame, offset the pos
// a bit to keep it from just making the first one louder
for (int i = Ambients.NUM_AMBIENTS; i < Ambients.NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS; i++)
{
channel_t check = _Channels[i];
if (check == target_chan)
{
continue;
}
if (check.sfx == sfx && check.pos == 0)
{
int skip = Sys.Random((int)(0.1 * _shm.speed));// rand() % (int)(0.1 * shm->speed);
if (skip >= target_chan.end)
{
skip = target_chan.end - 1;
}
target_chan.pos += skip;
target_chan.end -= skip;
break;
}
}
}