Method OnBeginFrame

Sources/Main.cpp:404–443

}

void GameEventHandler::OnBeginFrame()
{
	if (!_pendingCallbacks.empty()) {
		ZoneScopedNC("Pending callbacks", 0x888888);

		std::weak_ptr<void> emptyRef;
		Function<void()> callbackFunc;
		std::size_t i = 0;

		while (true) {
			{
#if defined(WITH_THREADS)
				std::unique_lock<std::mutex> lock(_pendingCallbacksLock);
#endif
				if (i >= _pendingCallbacks.size()) {
					break;
				}

				auto& callback = _pendingCallbacks[i];
				auto& callbackRef = callback.first();
				// Invoke the callback only if it has no corresponding reference or the reference is still alive
				if (!callbackRef.expired() || !(callbackRef.owner_before(emptyRef) || emptyRef.owner_before(callbackRef))) {
					// Callback cannot be invoked under the lock, because it can invoke another callback and it would cause deadlock
					callbackFunc = std::move(callback.second());
				} else {
					LOGW("Deferred callback dropped due to dead reference");
					i++;
					continue;
				}
			}

			callbackFunc();
			i++;
		}

		_pendingCallbacks.clear();
	}

	_currentHandler->OnBeginFrame();
}

void GameEventHandler::OnPostUpdate()
{