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-rw-r--r--src/sound_openal.cpp14
1 files changed, 10 insertions, 4 deletions
diff --git a/src/sound_openal.cpp b/src/sound_openal.cpp
index 87ca0aa8e..1f21f24ab 100644
--- a/src/sound_openal.cpp
+++ b/src/sound_openal.cpp
@@ -36,6 +36,7 @@ with this program; ifnot, write to the Free Software Foundation, Inc.,
#include <AL/alc.h>
#include <AL/alext.h>
#endif
+#include <cmath>
#include <vorbis/vorbisfile.h>
#include <cassert>
#include "log.h"
@@ -332,7 +333,7 @@ public:
return;
}
- alDistanceModel(AL_INVERSE_DISTANCE);
+ alDistanceModel(AL_INVERSE_DISTANCE_CLAMPED);
infostream<<"Audio: Initialized: OpenAL "<<alGetString(AL_VERSION)
<<", using "<<alcGetString(m_device, ALC_DEVICE_SPECIFIER)
@@ -405,7 +406,7 @@ public:
alSource3f(sound->source_id, AL_POSITION, 0, 0, 0);
alSource3f(sound->source_id, AL_VELOCITY, 0, 0, 0);
alSourcei(sound->source_id, AL_LOOPING, loop ? AL_TRUE : AL_FALSE);
- volume = MYMAX(0.0, volume);
+ volume = std::max(0.0f, volume);
alSourcef(sound->source_id, AL_GAIN, volume);
alSourcef(sound->source_id, AL_PITCH, pitch);
alSourcePlay(sound->source_id);
@@ -427,9 +428,14 @@ public:
alSourcei(sound->source_id, AL_SOURCE_RELATIVE, false);
alSource3f(sound->source_id, AL_POSITION, pos.X, pos.Y, pos.Z);
alSource3f(sound->source_id, AL_VELOCITY, 0, 0, 0);
- alSourcef(sound->source_id, AL_REFERENCE_DISTANCE, 30.0);
+ // Use alDistanceModel(AL_INVERSE_DISTANCE_CLAMPED) and set reference
+ // distance to clamp gain at <1 node distance, to avoid excessive
+ // volume when closer
+ alSourcef(sound->source_id, AL_REFERENCE_DISTANCE, 10.0f);
alSourcei(sound->source_id, AL_LOOPING, loop ? AL_TRUE : AL_FALSE);
- volume = MYMAX(0.0, volume);
+ // Multiply by 3 to compensate for reducing AL_REFERENCE_DISTANCE from
+ // the previous value of 30 to the new value of 10
+ volume = std::max(0.0f, volume * 3.0f);
alSourcef(sound->source_id, AL_GAIN, volume);
alSourcef(sound->source_id, AL_PITCH, pitch);
alSourcePlay(sound->source_id);