Method Execute

src/Generating/ChunkGenerator.cpp:193–266

void cChunkGenerator::Execute(void)
{
	// To be able to display performance information, the generator counts the chunks generated.
	// When the queue gets empty, the count is reset, so that waiting for the queue is not counted into the total time.
	int NumChunksGenerated = 0;  // Number of chunks generated since the queue was last empty
	clock_t GenerationStart = clock();  // Clock tick when the queue started to fill
	clock_t LastReportTick = clock();  // Clock tick of the last report made (so that performance isn't reported too often)

	while (!m_ShouldTerminate)
	{
		cCSLock Lock(m_CS);
		while (m_Queue.empty())
		{
			if ((NumChunksGenerated > 16) && (clock() - LastReportTick > CLOCKS_PER_SEC))
			{
				LOG("Chunk generator performance: %.2f ch/s (%d ch total)",
					(double)NumChunksGenerated * CLOCKS_PER_SEC/ (clock() - GenerationStart),
					NumChunksGenerated
				);
			}
			cCSUnlock Unlock(Lock);
			m_Event.Wait();
			if (m_ShouldTerminate)
			{
				return;
			}
			NumChunksGenerated = 0;
			GenerationStart = clock();
			LastReportTick = clock();
		}

		if (m_Queue.empty())
		{
			// Sometimes the queue remains empty
			// If so, we can't do any front() operations on it!
			continue;
		}

		cChunkCoords coords = m_Queue.front();		// Get next coord from queue
		m_Queue.erase( m_Queue.begin() );	// Remove coordinate from queue
		bool SkipEnabled = (m_Queue.size() > QUEUE_SKIP_LIMIT);
		Lock.Unlock();			// Unlock ASAP
		m_evtRemoved.Set();

		// Display perf info once in a while:
		if ((NumChunksGenerated > 16) && (clock() - LastReportTick > 2 * CLOCKS_PER_SEC))
		{
			LOG("Chunk generator performance: %.2f ch/s (%d ch total)",
				(double)NumChunksGenerated * CLOCKS_PER_SEC / (clock() - GenerationStart),
				NumChunksGenerated
			);
			LastReportTick = clock();
		}

		// Hack for regenerating chunks: if Y != 0, the chunk is considered invalid, even if it has its data set
		if ((coords.m_ChunkY == 0) && m_ChunkSink->IsChunkValid(coords.m_ChunkX, coords.m_ChunkZ))
		{
			LOGD("Chunk [%d, %d] already generated, skipping generation", coords.m_ChunkX, coords.m_ChunkZ);