Method SimulateSpeedOfSound

engine/Poseidon/Audio/SoundScene.cpp:368–382

{

void SoundScene::SimulateSpeedOfSound(IWave* sound)
{
    float distance = sound->GetPosition().Distance(GScene->GetCamera()->Position());
    // sound will not start playing between frames
    // it is therefore more accurate to subtract half of expected frame duration
    // from wait time. This way we are effectively rounding to nearest frame instead
    // of rounding to next one
    float halfFrame = GEngine->GetAvgFrameDuration(4) * (0.001f * 0.5f);
    float skip = -distance * InvSpeedOfSound + halfFrame;
    // avoid skipping sound start, only delay is allowed
    if (skip < 0)
    {
        sound->Skip(skip);
    }
}

// FindSound lives in OptionsUI.cpp (mission -> campaign -> global config
// resolution incl. mission-dir prefix and the per-language voice suffix);