Method MirrorXZ

src/BlockArea.cpp:1177–1211

void cBlockArea::MirrorXZ(void)
{
	if (!HasBlockTypes())
	{
		LOGWARNING("cBlockArea: Cannot mirror meta without blocktypes!");
		return;
	}

	if (!HasBlockMetas())
	{
		// There are no blockmetas to mirror, just use the NoMeta function
		MirrorXZNoMeta();
		return;
	}

	// We are guaranteed that both blocktypes and blockmetas exist; mirror both at the same time:
	int HalfY = m_Size.y / 2;
	int MaxY = m_Size.y - 1;
	for (int y = 0; y < HalfY; y++)
	{
		for (int z = 0; z < m_Size.z; z++)
		{
			for (int x = 0; x < m_Size.x; x++)
			{
				int Idx1 = MakeIndex(x, y, z);
				int Idx2 = MakeIndex(x, MaxY - y, z);
				std::swap(m_BlockTypes[Idx1], m_BlockTypes[Idx2]);
				NIBBLETYPE Meta1 = BlockHandler(m_BlockTypes[Idx2])->MetaMirrorXZ(m_BlockMetas[Idx1]);
				NIBBLETYPE Meta2 = BlockHandler(m_BlockTypes[Idx1])->MetaMirrorXZ(m_BlockMetas[Idx2]);
				m_BlockMetas[Idx1] = Meta2;
				m_BlockMetas[Idx2] = Meta1;
			}  // for x
		}  // for z
	}  // for y
}