Added Source:setRelativePosition and Source:hasRelativePosition, if enabled the Source's position will always be relative to the listener instead of absolute.

src/modules/audio/openal/Source.cpp

@@ -39,6 +39,7 @@ Source::Source(Pool *pool, love::sound::SoundData *soundData)
 	, valid(false)
 	, pitch(1.0f)
 	, volume(1.0f)
+	, relativePosition(false)
 	, looping(false)
 	, paused(false)
 	, minVolume(0.0f)
@@ -68,6 +69,7 @@ Source::Source(Pool *pool, love::sound::Decoder *decoder)
 	, valid(false)
 	, pitch(1.0f)
 	, volume(1.0f)
+	, relativePosition(false)
 	, looping(false)
 	, paused(false)
 	, minVolume(0.0f)
@@ -402,6 +404,19 @@ void Source::getDirection(float *v) const
 		setFloatv(v, direction);
 }
 
+void Source::setRelativePosition(bool relative)
+{
+	if (valid)
+		alSourcei(source, AL_SOURCE_RELATIVE, relative ? AL_TRUE : AL_FALSE);
+
+	relativePosition = relative;
+}
+
+bool Source::hasRelativePosition() const
+{
+	return relativePosition;
+}
+
 void Source::setLooping(bool looping)
 {
 	if (valid && type == TYPE_STATIC)
@@ -535,6 +550,7 @@ void Source::reset()
 	alSourcef(source, AL_ROLLOFF_FACTOR, rolloffFactor);
 	alSourcef(source, AL_MAX_DISTANCE, maxDistance);
 	alSourcei(source, AL_LOOPING, isStatic() && isLooping() ? AL_TRUE : AL_FALSE);
+	alSourcei(source, AL_SOURCE_RELATIVE, relativePosition ? AL_TRUE : AL_FALSE);
 }
 
 void Source::setFloatv(float *dst, const float *src) const

src/modules/audio/openal/Source.h

@@ -78,6 +78,8 @@ public:
 	virtual void getVelocity(float *v) const;
 	virtual void setDirection(float *v);
 	virtual void getDirection(float *v) const;
+	virtual void setRelativePosition(bool relative);
+	virtual bool hasRelativePosition() const;
 	void setLooping(bool looping);
 	bool isLooping() const;
 	bool isStatic() const;
@@ -126,6 +128,7 @@ private:
 	float position[3];
 	float velocity[3];
 	float direction[3];
+	bool relativePosition;
 	bool looping;
 	bool paused;
 	float minVolume;