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Added Source:setCone(innerAngle, outerAngle, outerVolume). Resolves issue #643.

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When combined with Source:setDirection (and Source:setPosition or love.audio.setPosition), the cone parameters allow for directional sound output from a Source.
This commit is contained in:
Alex Szpakowski
2013-10-11 05:30:11 -03:00
parent e2eb99a6af
commit 13ea750454
7 changed files with 89 additions and 1 deletions
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src/modules/audio/openal/Source.cpp
+27 -1
View File
@@ -19,8 +19,8 @@
**/
#include "Source.h"
#include "Pool.h"
#include "common/math.h"
// STD
#include <iostream>
@@ -47,6 +47,7 @@ Source::Source(Pool *pool, love::sound::SoundData *soundData)
, referenceDistance(1.0f)
, rolloffFactor(1.0f)
, maxDistance(FLT_MAX)
, cone()
, offsetSamples(0)
, offsetSeconds(0)
, decoder(0)
@@ -77,6 +78,7 @@ Source::Source(Pool *pool, love::sound::Decoder *decoder)
, referenceDistance(1.0f)
, rolloffFactor(1.0f)
, maxDistance(FLT_MAX)
, cone()
, offsetSamples(0)
, offsetSeconds(0)
, decoder(decoder)
@@ -404,6 +406,27 @@ void Source::getDirection(float *v) const
setFloatv(v, direction);
}
void Source::setCone(float innerAngle, float outerAngle, float outerVolume)
{
cone.innerAngle = LOVE_TODEG(innerAngle);
cone.outerAngle = LOVE_TODEG(outerAngle);
cone.outerVolume = outerVolume;
if (valid)
{
alSourcei(source, AL_CONE_INNER_ANGLE, cone.innerAngle);
alSourcei(source, AL_CONE_OUTER_ANGLE, cone.outerAngle);
alSourcef(source, AL_CONE_OUTER_GAIN, cone.outerVolume);
}
}
void Source::getCone(float &innerAngle, float &outerAngle, float &outerVolume) const
{
innerAngle = LOVE_TORAD(cone.innerAngle);
outerAngle = LOVE_TORAD(cone.outerAngle);
outerVolume = cone.outerVolume;
}
void Source::setRelativePosition(bool relative)
{
if (valid)
@@ -551,6 +574,9 @@ void Source::reset()
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);
alSourcei(source, AL_CONE_INNER_ANGLE, cone.innerAngle);
alSourcei(source, AL_CONE_OUTER_ANGLE, cone.outerAngle);
alSourcef(source, AL_CONE_OUTER_GAIN, cone.outerVolume);
}
void Source::setFloatv(float *dst, const float *src) const
src/modules/audio/openal/Source.h
+15
View File
@@ -78,6 +78,8 @@ public:
virtual void getVelocity(float *v) const;
virtual void setDirection(float *v);
virtual void getDirection(float *v) const;
virtual void setCone(float innerAngle, float outerAngle, float outerVolume);
virtual void getCone(float &innerAngle, float &outerAngle, float &outerVolume) const;
virtual void setRelativePosition(bool relative);
virtual bool hasRelativePosition() const;
void setLooping(bool looping);
@@ -137,6 +139,19 @@ private:
float rolloffFactor;
float maxDistance;
struct Cone
{
int innerAngle; // degrees
int outerAngle; // degrees
float outerVolume;
Cone()
: innerAngle(360)
, outerAngle(360)
, outerVolume(0.0f)
{}
} cone;
float offsetSamples;
float offsetSeconds;