/*
* source_setup
*/
static void source_setup( src_t *src, sfx_t *sfx, int priority, int entNum, int channel, float fvol, float attenuation )
{
ALuint buffer;
// Mark the SFX as used, and grab the raw AL buffer
S_UseBuffer( sfx );
buffer = S_GetALBuffer( sfx );
clamp_low( attenuation, 0.0f );
src->lastUse = trap_Milliseconds();
src->sfx = sfx;
src->priority = priority;
src->entNum = entNum;
src->channel = channel;
src->fvol = fvol;
src->attenuation = attenuation;
src->isActive = qtrue;
src->isLocked = qfalse;
src->isLooping = qfalse;
src->isTracking = qfalse;
VectorClear( src->origin );
VectorClear( src->velocity );
qalSourcefv( src->source, AL_POSITION, vec3_origin );
qalSourcefv( src->source, AL_VELOCITY, vec3_origin );
qalSourcef( src->source, AL_GAIN, fvol * s_volume->value );
qalSourcei( src->source, AL_SOURCE_RELATIVE, AL_FALSE );
qalSourcei( src->source, AL_LOOPING, AL_FALSE );
qalSourcei( src->source, AL_BUFFER, buffer );
qalSourcef( src->source, AL_REFERENCE_DISTANCE, s_attenuation_refdistance );
qalSourcef( src->source, AL_MAX_DISTANCE, s_attenuation_maxdistance );
qalSourcef( src->source, AL_ROLLOFF_FACTOR, attenuation );
}
/*
=================
S_AL_SrcSetup
=================
*/
static void S_AL_SrcSetup(srcHandle_t src, sfxHandle_t sfx, alSrcPriority_t priority,
int entity, int channel, qboolean local)
{
ALuint buffer;
src_t *curSource;
// Mark the SFX as used, and grab the raw AL buffer
S_AL_BufferUse(sfx);
buffer = S_AL_BufferGet(sfx);
// Set up src struct
curSource = &srcList[src];
curSource->lastUsedTime = Sys_Milliseconds();
curSource->sfx = sfx;
curSource->priority = priority;
curSource->entity = entity;
curSource->channel = channel;
curSource->isActive = qtrue;
curSource->isLocked = qfalse;
curSource->isLooping = qfalse;
curSource->isTracking = qfalse;
curSource->curGain = s_alGain->value * s_volume->value;
curSource->scaleGain = curSource->curGain;
curSource->local = local;
// Set up OpenAL source
qalSourcei(curSource->alSource, AL_BUFFER, buffer);
qalSourcef(curSource->alSource, AL_PITCH, 1.0f);
qalSourcef(curSource->alSource, AL_GAIN, curSource->curGain);
qalSourcefv(curSource->alSource, AL_POSITION, vec3_origin);
qalSourcefv(curSource->alSource, AL_VELOCITY, vec3_origin);
qalSourcei(curSource->alSource, AL_LOOPING, AL_FALSE);
qalSourcef(curSource->alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
if(local)
{
qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_TRUE);
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, 0.0f);
}
else
{
qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_FALSE);
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
}
}
/*
* source_spatialize
*/
static void source_spatialize( src_t *src )
{
if( !src->attenuation )
{
qalSourcei( src->source, AL_SOURCE_RELATIVE, AL_TRUE );
// this was set at source_setup, no need to redo every frame
//qalSourcefv( src->source, AL_POSITION, vec3_origin );
//qalSourcefv( src->source, AL_VELOCITY, vec3_origin );
return;
}
if( src->isTracking )
trap_GetEntitySpatilization( src->entNum, src->origin, src->velocity );
qalSourcei( src->source, AL_SOURCE_RELATIVE, AL_FALSE );
qalSourcefv( src->source, AL_POSITION, src->origin );
qalSourcefv( src->source, AL_VELOCITY, src->velocity );
}
/*
=================
S_AL_StartSound
Play a one-shot sound effect
=================
*/
static
void S_AL_StartSound( vec3_t origin, int entnum, int entchannel, sfxHandle_t sfx )
{
vec3_t sorigin;
srcHandle_t src;
if(S_AL_CheckInput(origin ? 0 : entnum, sfx))
return;
// Try to grab a source
src = S_AL_SrcAlloc(SRCPRI_ONESHOT, entnum, entchannel);
if(src == -1)
return;
// Set up the effect
if( origin == NULL )
{
if( S_AL_HearingThroughEntity( entnum ) )
{
// Where the entity is the local player, play a local sound
S_AL_SrcSetup( src, sfx, SRCPRI_ONESHOT, entnum, entchannel, qtrue );
VectorClear( sorigin );
}
else
{
S_AL_SrcSetup( src, sfx, SRCPRI_ONESHOT, entnum, entchannel, qfalse );
VectorCopy( entityList[ entnum ].origin, sorigin );
}
srcList[ src ].isTracking = qtrue;
}
else
{
S_AL_SrcSetup( src, sfx, SRCPRI_ONESHOT, entnum, entchannel, qfalse );
VectorCopy( origin, sorigin );
}
S_AL_SanitiseVector( sorigin );
qalSourcefv( srcList[ src ].alSource, AL_POSITION, sorigin );
S_AL_ScaleGain(&srcList[src], sorigin);
// Start it playing
qalSourcePlay(srcList[src].alSource);
}
/*
=================
S_AL_SrcUpdate
Update state (move things around, manage sources, and so on)
=================
*/
static
void S_AL_SrcUpdate( void )
{
int i;
int entityNum;
ALint state;
src_t *curSource;
for(i = 0; i < srcCount; i++)
{
entityNum = srcList[i].entity;
curSource = &srcList[i];
if(curSource->isLocked)
continue;
if(!curSource->isActive)
continue;
// Update source parameters
if((s_alGain->modified)||(s_volume->modified))
curSource->curGain = s_alGain->value * s_volume->value;
if((s_alRolloff->modified)&&(!curSource->local))
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
if(s_alMinDistance->modified)
qalSourcef(curSource->alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
if(curSource->isLooping)
{
sentity_t *sent = &entityList[ entityNum ];
// If a looping effect hasn't been touched this frame, kill it
if(sent->loopAddedThisFrame)
{
// The sound has changed without an intervening removal
if(curSource->isActive && !sent->startLoopingSound &&
curSource->sfx != sent->loopSfx)
{
qalSourceStop(curSource->alSource);
qalSourcei(curSource->alSource, AL_BUFFER, 0);
sent->startLoopingSound = qtrue;
}
// The sound hasn't been started yet
if(sent->startLoopingSound)
{
S_AL_SrcSetup(i, sent->loopSfx, sent->loopPriority,
entityNum, -1, curSource->local);
curSource->isLooping = qtrue;
qalSourcei(curSource->alSource, AL_LOOPING, AL_TRUE);
qalSourcePlay(curSource->alSource);
sent->startLoopingSound = qfalse;
}
// Update locality
if(curSource->local)
{
qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_TRUE);
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, 0.0f);
}
else
{
qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_FALSE);
qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
}
}
else
S_AL_SrcKill( i );
continue;
}
// Check if it's done, and flag it
qalGetSourcei(curSource->alSource, AL_SOURCE_STATE, &state);
if(state == AL_STOPPED)
{
S_AL_SrcKill(i);
continue;
}
// Query relativity of source, don't move if it's true
qalGetSourcei(curSource->alSource, AL_SOURCE_RELATIVE, &state);
// See if it needs to be moved
if(curSource->isTracking && !state)
{
qalSourcefv(curSource->alSource, AL_POSITION, entityList[entityNum].origin);
S_AL_ScaleGain(curSource, entityList[entityNum].origin);
}
}
}
/*
=================
S_AL_SrcLoop
=================
*/
static void S_AL_SrcLoop( alSrcPriority_t priority, sfxHandle_t sfx,
const vec3_t origin, const vec3_t velocity, int entityNum )
{
int src;
sentity_t *sent = &entityList[ entityNum ];
src_t *curSource;
// Do we need to allocate a new source for this entity
if( !sent->srcAllocated )
{
// Try to get a channel
src = S_AL_SrcAlloc( priority, entityNum, -1 );
if( src == -1 )
{
Com_DPrintf( S_COLOR_YELLOW "WARNING: Failed to allocate source "
"for loop sfx %d on entity %d\n", sfx, entityNum );
return;
}
sent->startLoopingSound = qtrue;
}
else
src = sent->srcIndex;
sent->srcAllocated = qtrue;
sent->srcIndex = src;
sent->loopPriority = priority;
sent->loopSfx = sfx;
// If this is not set then the looping sound is removed
sent->loopAddedThisFrame = qtrue;
curSource = &srcList[src];
// UGH
// These lines should be called via S_AL_SrcSetup, but we
// can't call that yet as it buffers sfxes that may change
// with subsequent calls to S_AL_SrcLoop
curSource->entity = entityNum;
curSource->isLooping = qtrue;
curSource->isActive = qtrue;
if( S_AL_HearingThroughEntity( entityNum ) )
{
curSource->local = qtrue;
qalSourcefv( curSource->alSource, AL_POSITION, vec3_origin );
qalSourcefv( curSource->alSource, AL_VELOCITY, vec3_origin );
}
else
{
curSource->local = qfalse;
qalSourcefv( curSource->alSource, AL_POSITION, (ALfloat *)sent->origin );
qalSourcefv( curSource->alSource, AL_VELOCITY, (ALfloat *)velocity );
}
S_AL_ScaleGain(curSource, sent->origin);
}