void Engine::RunFrame()
{
assert(initialized_);
// If not headless, and the graphics subsystem no longer has a window open, assume we should exit
if (!headless_ && !GetSubsystem<Graphics>()->IsInitialized())
exiting_ = true;
if (exiting_)
return;
// Note: there is a minimal performance cost to looking up subsystems (uses a hashmap); if they would be looked up several
// times per frame it would be better to cache the pointers
Time* time = GetSubsystem<Time>();
Input* input = GetSubsystem<Input>();
Audio* audio = GetSubsystem<Audio>();
time->BeginFrame(timeStep_);
// If pause when minimized -mode is in use, stop updates and audio as necessary
if (pauseMinimized_ && input->IsMinimized())
{
if (audio->IsPlaying())
{
audio->Stop();
audioPaused_ = true;
}
}
else
{
// Only unpause when it was paused by the engine
if (audioPaused_)
{
audio->Play();
audioPaused_ = false;
}
Update();
}
Render();
ApplyFrameLimit();
time->EndFrame();
}
LRESULT Audio::AudioProcStatic(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
#pragma warning(disable: 4312)
Audio* audio = reinterpret_cast<Audio*>(GetWindowLong(hWnd, GWL_USERDATA));
#pragma warning(default: 4312)
switch (msg)
{
case MM_MCINOTIFY: // message received when an audio file has finished playing - used for repeat function
if (wParam == MCI_NOTIFY_SUCCESSFUL && audio->IsPlaying())
{
audio->SwitchPlayingOff();
if (audio->GetRepeat()) audio->Play(); // repeat the audio
else audio->CallListeners(); // notify listeners that the audio file has come to an end
}
}
return 0;
}