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https://github.com/UberGames/ioef.git
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- Explicitly set distance attenuation model.
- Mute sounds that exceed a certain distance from the listener.
This commit is contained in:
Thilo Schulz
parent
90208be35a
commit
b57a970034
2 changed files with 137 additions and 64 deletions
4
README
4
README
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@ -116,8 +116,12 @@ New cvars
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s_alDopplerSpeed - the value passed to alDopplerVelocity
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s_alMinDistance - the value of AL_REFERENCE_DISTANCE for
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each source
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s_alMaxDistance - the maximum distance before sounds start
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to become inaudible.
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s_alRolloff - the value of AL_ROLLOFF_FACTOR for each
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source
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s_alGraceDistance - after having passed MaxDistance, length
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until sounds are completely inaudible.
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s_alMaxSpeakerDistance - ET_SPEAKERS beyond this distance are
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culled
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s_alDriver - which OpenAL library to use
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@ -36,7 +36,9 @@ cvar_t *s_alSources;
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cvar_t *s_alDopplerFactor;
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cvar_t *s_alDopplerSpeed;
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cvar_t *s_alMinDistance;
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cvar_t *s_alMaxDistance;
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cvar_t *s_alRolloff;
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cvar_t *s_alGraceDistance;
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cvar_t *s_alDriver;
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cvar_t *s_alDevice;
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cvar_t *s_alAvailableDevices;
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@ -464,6 +466,9 @@ typedef struct src_s
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int isLooping; // Is this a looping effect (attached to an entity)
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int isTracking; // Is this object tracking it's owner
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float curGain; // gain employed if source is within maxdistance.
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float scaleGain; // Last gain value for this source. 0 if muted.
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qboolean local; // Is this local (relative to the cam)
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} src_t;
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@ -511,6 +516,50 @@ static void _S_AL_SanitiseVector( vec3_t v, int line )
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#define AL_THIRD_PERSON_THRESHOLD_SQ (48.0f*48.0f)
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/*
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=================
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S_AL_ScaleGain
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Adapt the gain if necessary to get a quicker fadeout when the source is too far away.
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=================
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*/
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static void S_AL_ScaleGain(src_t *chksrc, vec3_t origin)
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{
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float distance;
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if(chksrc->local)
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distance = VectorLength(origin);
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else
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distance = Distance(origin, lastListenerOrigin);
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// If we exceed a certain distance, scale the gain linearly until the sound
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// vanishes into nothingness.
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if((distance -= s_alMaxDistance->value) > 0)
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{
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float scaleFactor;
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if(distance >= s_alGraceDistance->value)
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scaleFactor = 0.0f;
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else
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scaleFactor = 1.0f - distance / s_alGraceDistance->value;
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scaleFactor *= chksrc->curGain;
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if(chksrc->scaleGain != scaleFactor);
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{
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chksrc->scaleGain = scaleFactor;
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// if(scaleFactor > 0.0f)
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// Com_Printf("%f\n", scaleFactor);
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qalSourcef(chksrc->alSource, AL_GAIN, chksrc->scaleGain);
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}
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}
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else if(chksrc->scaleGain != chksrc->curGain)
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{
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chksrc->scaleGain = chksrc->curGain;
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qalSourcef(chksrc->alSource, AL_GAIN, chksrc->scaleGain);
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}
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}
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/*
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=================
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S_AL_HearingThroughEntity
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@ -616,41 +665,46 @@ static void S_AL_SrcSetup(srcHandle_t src, sfxHandle_t sfx, alSrcPriority_t prio
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int entity, int channel, qboolean local)
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{
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ALuint buffer;
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src_t *curSource;
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// Mark the SFX as used, and grab the raw AL buffer
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S_AL_BufferUse(sfx);
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buffer = S_AL_BufferGet(sfx);
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// Set up src struct
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srcList[src].lastUsedTime = Sys_Milliseconds();
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srcList[src].sfx = sfx;
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srcList[src].priority = priority;
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srcList[src].entity = entity;
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srcList[src].channel = channel;
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srcList[src].isActive = qtrue;
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srcList[src].isLocked = qfalse;
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srcList[src].isLooping = qfalse;
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srcList[src].isTracking = qfalse;
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srcList[src].local = local;
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curSource = &srcList[src];
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curSource->lastUsedTime = Sys_Milliseconds();
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curSource->sfx = sfx;
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curSource->priority = priority;
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curSource->entity = entity;
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curSource->channel = channel;
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curSource->isActive = qtrue;
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curSource->isLocked = qfalse;
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curSource->isLooping = qfalse;
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curSource->isTracking = qfalse;
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curSource->curGain = s_alGain->value * s_volume->value;
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curSource->scaleGain = curSource->curGain;
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curSource->local = local;
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// Set up OpenAL source
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qalSourcei(srcList[src].alSource, AL_BUFFER, buffer);
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qalSourcef(srcList[src].alSource, AL_PITCH, 1.0f);
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qalSourcef(srcList[src].alSource, AL_GAIN, s_alGain->value * s_volume->value);
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qalSourcefv(srcList[src].alSource, AL_POSITION, vec3_origin);
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qalSourcefv(srcList[src].alSource, AL_VELOCITY, vec3_origin);
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qalSourcei(srcList[src].alSource, AL_LOOPING, AL_FALSE);
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qalSourcef(srcList[src].alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
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qalSourcei(curSource->alSource, AL_BUFFER, buffer);
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qalSourcef(curSource->alSource, AL_PITCH, 1.0f);
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qalSourcef(curSource->alSource, AL_GAIN, curSource->curGain);
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qalSourcefv(curSource->alSource, AL_POSITION, vec3_origin);
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qalSourcefv(curSource->alSource, AL_VELOCITY, vec3_origin);
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qalSourcei(curSource->alSource, AL_LOOPING, AL_FALSE);
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qalSourcef(curSource->alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
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if(local)
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{
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qalSourcei(srcList[src].alSource, AL_SOURCE_RELATIVE, AL_TRUE);
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qalSourcef(srcList[src].alSource, AL_ROLLOFF_FACTOR, 0.0f);
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qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_TRUE);
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qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, 0.0f);
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}
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else
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{
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qalSourcei(srcList[src].alSource, AL_SOURCE_RELATIVE, AL_FALSE);
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qalSourcef(srcList[src].alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
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qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_FALSE);
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qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
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}
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}
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@ -887,6 +941,7 @@ void S_AL_StartSound( vec3_t origin, int entnum, int entchannel, sfxHandle_t sfx
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S_AL_SanitiseVector( sorigin );
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qalSourcefv( srcList[ src ].alSource, AL_POSITION, sorigin );
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S_AL_ScaleGain(&srcList[src], sorigin);
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// Start it playing
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qalSourcePlay(srcList[src].alSource);
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@ -918,6 +973,7 @@ static void S_AL_SrcLoop( alSrcPriority_t priority, sfxHandle_t sfx,
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{
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int src;
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sentity_t *sent = &entityList[ entityNum ];
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src_t *curSource;
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// Do we need to allocate a new source for this entity
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if( !sent->srcAllocated )
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@ -945,28 +1001,33 @@ static void S_AL_SrcLoop( alSrcPriority_t priority, sfxHandle_t sfx,
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// If this is not set then the looping sound is removed
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sent->loopAddedThisFrame = qtrue;
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curSource = &srcList[src];
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// UGH
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// These lines should be called via S_AL_SrcSetup, but we
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// can't call that yet as it buffers sfxes that may change
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// with subsequent calls to S_AL_SrcLoop
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srcList[ src ].entity = entityNum;
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srcList[ src ].isLooping = qtrue;
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srcList[ src ].isActive = qtrue;
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curSource->entity = entityNum;
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curSource->isLooping = qtrue;
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curSource->isActive = qtrue;
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if( S_AL_HearingThroughEntity( entityNum ) )
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{
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srcList[ src ].local = qtrue;
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curSource->local = qtrue;
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qalSourcefv( srcList[ src ].alSource, AL_POSITION, vec3_origin );
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qalSourcefv( srcList[ src ].alSource, AL_VELOCITY, vec3_origin );
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qalSourcefv( curSource->alSource, AL_POSITION, vec3_origin );
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qalSourcefv( curSource->alSource, AL_VELOCITY, vec3_origin );
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}
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else
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{
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srcList[ src ].local = qfalse;
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curSource->local = qfalse;
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qalSourcefv( srcList[ src ].alSource, AL_POSITION, (ALfloat *)sent->origin );
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qalSourcefv( srcList[ src ].alSource, AL_VELOCITY, (ALfloat *)velocity );
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qalSourcefv( curSource->alSource, AL_POSITION, (ALfloat *)sent->origin );
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qalSourcefv( curSource->alSource, AL_VELOCITY, (ALfloat *)velocity );
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}
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S_AL_ScaleGain(curSource, sent->origin);
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}
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/*
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@ -1028,63 +1089,65 @@ void S_AL_SrcUpdate( void )
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int i;
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int entityNum;
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ALint state;
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src_t *curSource;
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for(i = 0; i < srcCount; i++)
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{
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entityNum = srcList[i].entity;
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curSource = &srcList[i];
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if(srcList[i].isLocked)
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if(curSource->isLocked)
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continue;
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if(!srcList[i].isActive)
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if(!curSource->isActive)
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continue;
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// Update source parameters
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if((s_alGain->modified)||(s_volume->modified))
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qalSourcef(srcList[i].alSource, AL_GAIN, s_alGain->value * s_volume->value);
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if((s_alRolloff->modified)&&(!srcList[i].local))
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qalSourcef(srcList[i].alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
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curSource->curGain = s_alGain->value * s_volume->value;
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if((s_alRolloff->modified)&&(!curSource->local))
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qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
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if(s_alMinDistance->modified)
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qalSourcef(srcList[i].alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
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qalSourcef(curSource->alSource, AL_REFERENCE_DISTANCE, s_alMinDistance->value);
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if( srcList[ i ].isLooping )
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if(curSource->isLooping)
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{
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sentity_t *sent = &entityList[ entityNum ];
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// If a looping effect hasn't been touched this frame, kill it
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if( sent->loopAddedThisFrame )
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if(sent->loopAddedThisFrame)
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{
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// The sound has changed without an intervening removal
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if( srcList[ i ].isActive && !sent->startLoopingSound &&
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srcList[ i ].sfx != sent->loopSfx )
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if(curSource->isActive && !sent->startLoopingSound &&
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curSource->sfx != sent->loopSfx)
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{
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qalSourceStop( srcList[ i ].alSource );
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qalSourcei( srcList[ i ].alSource, AL_BUFFER, 0 );
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qalSourceStop(curSource->alSource);
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qalSourcei(curSource->alSource, AL_BUFFER, 0);
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sent->startLoopingSound = qtrue;
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}
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// Ths sound hasn't been started yet
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if( sent->startLoopingSound )
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// The sound hasn't been started yet
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if(sent->startLoopingSound)
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{
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S_AL_SrcSetup( i, sent->loopSfx, sent->loopPriority,
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entityNum, -1, srcList[ i ].local );
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srcList[ i ].isLooping = qtrue;
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qalSourcei( srcList[ i ].alSource, AL_LOOPING, AL_TRUE );
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qalSourcePlay( srcList[ i ].alSource );
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S_AL_SrcSetup(i, sent->loopSfx, sent->loopPriority,
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entityNum, -1, curSource->local);
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curSource->isLooping = qtrue;
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qalSourcei(curSource->alSource, AL_LOOPING, AL_TRUE);
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qalSourcePlay(curSource->alSource);
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sent->startLoopingSound = qfalse;
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}
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// Update locality
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if( srcList[ i ].local)
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if(curSource->local)
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{
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qalSourcei( srcList[ i ].alSource, AL_SOURCE_RELATIVE, AL_TRUE );
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qalSourcef( srcList[ i ].alSource, AL_ROLLOFF_FACTOR, 0.0f );
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qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_TRUE);
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qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, 0.0f);
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}
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else
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{
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qalSourcei( srcList[ i ].alSource, AL_SOURCE_RELATIVE, AL_FALSE );
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qalSourcef( srcList[ i ].alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value );
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qalSourcei(curSource->alSource, AL_SOURCE_RELATIVE, AL_FALSE);
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qalSourcef(curSource->alSource, AL_ROLLOFF_FACTOR, s_alRolloff->value);
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}
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}
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else
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@ -1093,20 +1156,23 @@ void S_AL_SrcUpdate( void )
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continue;
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}
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// Query relativity of source, don't move if it's true
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qalGetSourcei( srcList[ i ].alSource, AL_SOURCE_RELATIVE, &state );
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// See if it needs to be moved
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if( srcList[ i ].isTracking && !state )
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qalSourcefv(srcList[i].alSource, AL_POSITION, entityList[entityNum].origin);
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// Check if it's done, and flag it
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qalGetSourcei(srcList[i].alSource, AL_SOURCE_STATE, &state);
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qalGetSourcei(curSource->alSource, AL_SOURCE_STATE, &state);
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if(state == AL_STOPPED)
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{
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S_AL_SrcKill(i);
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continue;
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}
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// Query relativity of source, don't move if it's true
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qalGetSourcei(curSource->alSource, AL_SOURCE_RELATIVE, &state);
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// See if it needs to be moved
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if(curSource->isTracking && !state)
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{
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qalSourcefv(curSource->alSource, AL_POSITION, entityList[entityNum].origin);
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S_AL_ScaleGain(curSource, entityList[entityNum].origin);
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}
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}
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}
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@ -1775,7 +1841,9 @@ qboolean S_AL_Init( soundInterface_t *si )
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s_alDopplerFactor = Cvar_Get( "s_alDopplerFactor", "1.0", CVAR_ARCHIVE );
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s_alDopplerSpeed = Cvar_Get( "s_alDopplerSpeed", "2200", CVAR_ARCHIVE );
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s_alMinDistance = Cvar_Get( "s_alMinDistance", "120", CVAR_CHEAT );
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s_alRolloff = Cvar_Get( "s_alRolloff", "0.8", CVAR_CHEAT );
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s_alMaxDistance = Cvar_Get("s_alMaxDistance", "1024", CVAR_CHEAT);
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s_alRolloff = Cvar_Get( "s_alRolloff", "2", CVAR_CHEAT);
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s_alGraceDistance = Cvar_Get("s_alGraceDistance", "512", CVAR_CHEAT);
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s_alMaxSpeakerDistance = Cvar_Get( "s_alMaxSpeakerDistance", "1024", CVAR_ARCHIVE );
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s_alDriver = Cvar_Get( "s_alDriver", ALDRIVER_DEFAULT, CVAR_ARCHIVE );
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@ -1787,7 +1855,7 @@ qboolean S_AL_Init( soundInterface_t *si )
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return qfalse;
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}
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// Device enumeration support (extension currently only exists for windows).
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// Device enumeration support (extension is implemented reasonably only on Windows right now).
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if((enumsupport = qalcIsExtensionPresent(NULL, "ALC_ENUMERATION_EXT")))
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{
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char devicenames[1024] = "";
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@ -1863,6 +1931,7 @@ qboolean S_AL_Init( soundInterface_t *si )
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S_AL_SrcInit( );
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// Set up OpenAL parameters (doppler, etc)
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qalDistanceModel(AL_INVERSE_DISTANCE_CLAMPED);
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qalDopplerFactor( s_alDopplerFactor->value );
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qalDopplerVelocity( s_alDopplerSpeed->value );
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