public void UpdateSoundPosition()
{
if (Car.SoundSourceIDs.Count == 0 || Viewer.Camera == null)
{
return;
}
if (Car.Train != null)
{
var realSpeedMpS = Car.SpeedMpS;
//TODO Following if block is needed due to physics flipping when using rear cab
// If such physics flipping is removed next block has to be removed.
if (Car is MSTSLocomotive)
{
var loco = Car as MSTSLocomotive;
if (loco.UsingRearCab)
{
realSpeedMpS = -realSpeedMpS;
}
}
Vector3 directionVector = Vector3.Multiply(Car.WorldPosition.XNAMatrix.Forward, realSpeedMpS);
Velocity = new float[] { directionVector.X, directionVector.Y, -directionVector.Z };
}
else
{
Velocity = new float[] { 0, 0, 0 }
};
// TODO This entire block of code (down to TODO END) should be inside the SoundProcess, not here.
SoundLocation = new WorldLocation(Car.WorldPosition.WorldLocation);
SoundLocation.NormalizeTo(Camera.SoundBaseTile.X, Camera.SoundBaseTile.Y);
float[] position = new float[] {
SoundLocation.Location.X,
SoundLocation.Location.Y,
SoundLocation.Location.Z
};
// make a copy of SoundSourceIDs, but check that it didn't change during the copy; if it changed, try again up to 5 times.
var sSIDsFinalCount = -1;
var sSIDsInitCount = -2;
int[] soundSourceIDs = { 0 };
int trialCount = 0;
try
{
while (sSIDsInitCount != sSIDsFinalCount && trialCount < 5)
{
sSIDsInitCount = Car.SoundSourceIDs.Count;
soundSourceIDs = Car.SoundSourceIDs.ToArray();
sSIDsFinalCount = Car.SoundSourceIDs.Count;
trialCount++;
}
}
catch
{
Trace.TraceInformation("Skipped update of position and speed of sound sources");
return;
}
if (trialCount >= 5)
{
return;
}
foreach (var soundSourceID in soundSourceIDs)
{
Viewer.Simulator.updaterWorking = true;
if (OpenAL.alIsSource(soundSourceID))
{
OpenAL.alSourcefv(soundSourceID, OpenAL.AL_POSITION, position);
OpenAL.alSourcefv(soundSourceID, OpenAL.AL_VELOCITY, Velocity);
}
Viewer.Simulator.updaterWorking = false;
}
// TODO END
}
}
