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Handle sounds marked as 'area sounds' 

Note, the area radius is 128 units for it to actually do something, unlike FMOD
where it's only 32.
This commit is contained in:
Chris Robinson 2014-06-22 19:35:09 -07:00
parent 845e369b87
commit a434af92ee
1 changed files with 37 additions and 6 deletions
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43
src/sound/oalsound.cpp
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@ -527,6 +527,8 @@ public:
extern ReverbContainer *ForcedEnvironment;
#define AREA_SOUND_RADIUS (128.f)
#define PITCH_MULT (0.7937005f) /* Approx. 4 semitones lower; what Nash suggested */
#define PITCH(pitch) (snd_pitched ? (pitch)/128.f : 1.f)
@ -1210,10 +1212,28 @@ FISoundChannel *OpenALSoundRenderer::StartSound3D(SoundHandle sfx, SoundListener
float gain = GetRolloff(rolloff, sqrt(dist_sqr) * distscale);
dir.Resize((gain > 0.00001f) ? 1.f/gain : 100000.f);
}
if((chanflags&SNDF_AREA) && dist_sqr < AREA_SOUND_RADIUS*AREA_SOUND_RADIUS)
{
FVector3 near(0.f, !(dir.Y>=0.f) ? -1.f : 1.f, 0.f);
float a = sqrt(dist_sqr) / AREA_SOUND_RADIUS;
dir = near + (dir-near)*a;
}
dir += listener->position;
alSource3f(source, AL_POSITION, dir[0], dir[1], -dir[2]);
}
else if((chanflags&SNDF_AREA) && dist_sqr < AREA_SOUND_RADIUS*AREA_SOUND_RADIUS)
{
FVector3 dir = pos - listener->position;
float mindist = rolloff->MinDistance/distscale;
FVector3 near(0.f, !(dir.Y>=0.f) ? -mindist : mindist, 0.f);
float a = sqrt(dist_sqr) / AREA_SOUND_RADIUS;
dir = near + (dir-near)*a;
dir += listener->position;
alSource3f(source, AL_POSITION, dir[0], dir[1], -dir[2]);
}
else
alSource3f(source, AL_POSITION, pos[0], pos[1], -pos[2]);
alSource3f(source, AL_VELOCITY, vel[0], vel[1], -vel[2]);
@ -1425,7 +1445,6 @@ void OpenALSoundRenderer::UpdateSoundParams3D(SoundListener *listener, FISoundCh
FVector3 dir = pos - listener->position;
chan->DistanceSqr = dir.LengthSquared();
ALuint source = GET_PTRID(chan->SysChannel);
if(chan->ManualRolloff)
{
if(dir.DoesNotApproximatelyEqual(FVector3(0.f, 0.f, 0.f)))
@ -1433,12 +1452,24 @@ void OpenALSoundRenderer::UpdateSoundParams3D(SoundListener *listener, FISoundCh
float gain = GetRolloff(&chan->Rolloff, sqrt(chan->DistanceSqr) * chan->DistanceScale);
dir.Resize((gain > 0.00001f) ? 1.f/gain : 100000.f);
}
dir += listener->position;
alSource3f(source, AL_POSITION, dir[0], dir[1], -dir[2]);
if(areasound && chan->DistanceSqr < AREA_SOUND_RADIUS*AREA_SOUND_RADIUS)
{
FVector3 near(0.f, !(dir.Y>=0.f) ? -1.f : 1.f, 0.f);
float a = sqrt(chan->DistanceSqr) / AREA_SOUND_RADIUS;
dir = near + (dir-near)*a;
}
}
else
alSource3f(source, AL_POSITION, pos[0], pos[1], -pos[2]);
else if(areasound && chan->DistanceSqr < AREA_SOUND_RADIUS*AREA_SOUND_RADIUS)
{
float mindist = chan->Rolloff.MinDistance / chan->DistanceScale;
FVector3 near(0.f, !(dir.Y>=0.f) ? -mindist : mindist, 0.f);
float a = sqrt(chan->DistanceSqr) / AREA_SOUND_RADIUS;
dir = near + (dir-near)*a;
}
dir += listener->position;
ALuint source = GET_PTRID(chan->SysChannel);
alSource3f(source, AL_POSITION, dir[0], dir[1], -dir[2]);
alSource3f(source, AL_VELOCITY, vel[0], vel[1], -vel[2]);
getALError();
}