Method TickBlocks

src/Chunk.cpp:778–818

void cChunk::TickBlocks(void)
{
	// Tick dem blocks
	// _X: We must limit the random number or else we get a nasty int overflow bug ( http://forum.mc-server.org/showthread.php?tid=457 )
	int RandomX = m_World->GetTickRandomNumber(0x00ffffff);
	int RandomY = m_World->GetTickRandomNumber(0x00ffffff);
	int RandomZ = m_World->GetTickRandomNumber(0x00ffffff);
	int TickX = m_BlockTickX;
	int TickY = m_BlockTickY;
	int TickZ = m_BlockTickZ;
	
	cChunkInterface ChunkInterface(this->GetWorld()->GetChunkMap());
	cBlockInServerPluginInterface PluginInterface(*this->GetWorld());

	// This for loop looks disgusting, but it actually does a simple thing - first processes m_BlockTick, then adds random to it
	// This is so that SetNextBlockTick() works
	for (int i = 0; i < 50; i++,
	
		// This weird construct (*2, then /2) is needed,
		// otherwise the blocktick distribution is too biased towards even coords!
		
		TickX = (TickX + RandomX) % (Width * 2),
		TickY = (TickY + RandomY) % (Height * 2),
		TickZ = (TickZ + RandomZ) % (Width * 2),
		m_BlockTickX = TickX / 2,
		m_BlockTickY = TickY / 2,
		m_BlockTickZ = TickZ / 2
	)
	{

		if (m_BlockTickY > cChunkDef::GetHeight(m_HeightMap, m_BlockTickX, m_BlockTickZ))
		{
			continue; // It's all air up here
		}

		unsigned int Index = MakeIndexNoCheck(m_BlockTickX, m_BlockTickY, m_BlockTickZ);
		cBlockHandler * Handler = BlockHandler(m_BlockTypes[Index]);
		ASSERT(Handler != NULL);  // Happenned on server restart, FS #243
		Handler->OnUpdate(ChunkInterface, *this->GetWorld(), PluginInterface, *this, m_BlockTickX, m_BlockTickY, m_BlockTickZ);
	}  // for i - tickblocks
}