void AudioChannel::FindSourceAndPlay(size_t id, const float3& pos, const float3& velocity, float volume, bool relative)
{
std::lock_guard<spring::recursive_mutex> lck(soundMutex);
if (!enabled)
return;
if (volume <= 0.0f)
return;
// generate the sound item
SoundItem* sndItem = sound->GetSoundItem(id);
if (sndItem == nullptr) {
sound->numEmptyPlayRequests++;
return;
}
// check distance to listener
if (pos.distance(sound->GetListenerPos()) > sndItem->MaxDistance()) {
if (!relative)
return;
LOG("CSound::PlaySample: maxdist ignored for relative playback: %s", sndItem->Name().c_str());
}
// don't spam to many sounds per frame
if (emitsThisFrame >= emitsPerFrame)
return;
emitsThisFrame++;
// check if the sound item is already played
if (curSources.size() >= maxConcurrentSources) {
CSoundSource* src = nullptr;
int prio = INT_MAX;
for (auto it = curSources.begin(); it != curSources.end(); ++it) {
if ((*it)->GetCurrentPriority() < prio) {
src = *it;
prio = src->GetCurrentPriority();
}
}
if (src == nullptr || prio > sndItem->GetPriority()) {
LOG_L(L_DEBUG, "CSound::PlaySample: Max concurrent sounds in channel reached! Dropping playback!");
return;
}
src->Stop();
}
// find a sound source to play the item in
CSoundSource* sndSource = sound->GetNextBestSource();
if (sndSource == nullptr || (sndSource->GetCurrentPriority() >= sndItem->GetPriority())) {
LOG_L(L_DEBUG, "CSound::PlaySample: Max sounds reached! Dropping playback!");
return;
}
if (sndSource->IsPlaying())
sound->numAbortedPlays++;
// play the sound item
sndSource->PlayAsync(this, sndItem, pos, velocity, volume, relative);
curSources.insert(sndSource);
}
