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();
}
