/*
* Performance stereo spatialization
* of a channel in the frontends
* sense.
*/
static void
AL_Spatialize(channel_t *ch)
{
vec3_t origin;
if ((ch->entnum == -1) || (ch->entnum == cl.playernum + 1) || !ch->dist_mult)
{
/* from view entity (player) => nothing to do,
* position is still (0,0,0) and relative,
* as set in AL_PlayChannel() */
return;
}
else if (ch->fixed_origin)
{
VectorCopy(ch->origin, origin);
qalSource3f(ch->srcnum, AL_POSITION, AL_UnpackVector(origin));
return;
}
else
{
CL_GetEntitySoundOrigin(ch->entnum, origin);
qalSource3f(ch->srcnum, AL_POSITION, AL_UnpackVector(origin));
return;
}
}
/*
* Performance stereo spatialization
* of a channel in the frontends
* sense.
*/
static void
AL_Spatialize(channel_t *ch)
{
vec3_t origin;
/* anything coming from the view entity
will always be full volume. no
attenuation = no spatialization */
if ((ch->entnum == -1) || (ch->entnum == cl.playernum + 1) || !ch->dist_mult)
{
qalSource3f(ch->srcnum, AL_POSITION, 0,0,0);
qalSourcei(ch->srcnum, AL_SOURCE_RELATIVE, AL_TRUE);
return;
}
if (ch->fixed_origin)
{
VectorCopy(ch->origin, origin);
}
else
{
CL_GetEntitySoundOrigin(ch->entnum, origin);
}
qalSourcei(ch->srcnum, AL_SOURCE_RELATIVE, AL_FALSE);
qalSource3f(ch->srcnum, AL_POSITION, AL_UnpackVector(origin));
}
void AL_Update(void)
{
int i;
channel_t *ch;
vec_t orientation[6];
if (!s_active) {
return;
}
paintedtime = cl.time;
// set listener parameters
qalListener3f(AL_POSITION, AL_UnpackVector(listener_origin));
AL_CopyVector(listener_forward, orientation);
AL_CopyVector(listener_up, orientation + 3);
qalListenerfv(AL_ORIENTATION, orientation);
qalListenerf(AL_GAIN, s_volume->value);
qalDistanceModel(AL_LINEAR_DISTANCE_CLAMPED);
// update spatialization for dynamic sounds
ch = channels;
for (i = 0; i < s_numchannels; i++, ch++) {
if (!ch->sfx)
continue;
if (ch->autosound) {
// autosounds are regenerated fresh each frame
if (ch->autoframe != s_framecount) {
AL_StopChannel(ch);
continue;
}
} else {
ALenum state;
qalGetError();
qalGetSourcei(ch->srcnum, AL_SOURCE_STATE, &state);
if (qalGetError() != AL_NO_ERROR || state == AL_STOPPED) {
AL_StopChannel(ch);
continue;
}
}
#ifdef _DEBUG
if (s_show->integer) {
Com_Printf("%.1f %s\n", ch->master_vol, ch->sfx->name);
// total++;
}
#endif
AL_Spatialize(ch); // respatialize channel
}
s_framecount++;
// add loopsounds
AL_AddLoopSounds();
AL_IssuePlaysounds();
}
/*
* Main update function. Called every frame,
* performes all necessary calculations.
*/
void
AL_Update ( void )
{
q_int32_t i;
channel_t *ch;
vec_t orientation[6];
paintedtime = cl.time;
/* set listener (player) parameters */
AL_CopyVector ( listener_forward, orientation );
AL_CopyVector ( listener_up, orientation + 3 );
qalListenerf ( AL_GAIN, s_volume->value );
qalListenerf ( AL_MAX_GAIN, s_openal_maxgain->value );
qalDistanceModel ( AL_LINEAR_DISTANCE_CLAMPED );
qalListener3f ( AL_POSITION, AL_UnpackVector ( listener_origin ) );
qalListenerfv ( AL_ORIENTATION, orientation );
/* update spatialization for dynamic sounds */
ch = channels;
for ( i = 0; i < s_numchannels; i++, ch++ ) {
if ( !ch->sfx ) {
continue;
}
if ( ch->autosound ) {
/* autosounds are regenerated fresh each frame */
if ( ch->autoframe != s_framecount ) {
AL_StopChannel ( ch );
continue;
}
} else {
ALenum state;
qalGetError();
qalGetSourcei ( ch->srcnum, AL_SOURCE_STATE, &state );
if ( ( qalGetError() != AL_NO_ERROR ) || ( state == AL_STOPPED ) ) {
AL_StopChannel ( ch );
continue;
}
}
if ( s_show->value ) {
Com_Printf ( "%3i %s\n", ch->master_vol, ch->sfx->name );
}
/* respatialize channel */
AL_Spatialize ( ch );
}
s_framecount++;
/* add loopsounds */
AL_AddLoopSounds();
/* add music */
#ifdef HT_WITH_OGG
OGG_Stream();
#endif
AL_StreamUpdate();
AL_IssuePlaysounds();
}
static void AL_Spatialize( channel_t *ch ) {
vec3_t origin;
// anything coming from the view entity will always be full volume
// no attenuation = no spatialization
if( ch->entnum == -1 || ch->entnum == cl.playernum + 1 || !ch->dist_mult ) {
VectorCopy( listener_origin, origin );
} else if( ch->fixed_origin ) {
VectorCopy( ch->origin, origin );
} else {
CL_GetEntitySoundOrigin( ch->entnum, origin );
}
qalSource3f( ch->srcnum, AL_POSITION, AL_UnpackVector( origin ) );
}
