Method Read

src/BlockArea.cpp:337–403

bool cBlockArea::Read(cForEachChunkProvider * a_ForEachChunkProvider, int a_MinBlockX, int a_MaxBlockX, int a_MinBlockY, int a_MaxBlockY, int a_MinBlockZ, int a_MaxBlockZ, int a_DataTypes)
{
	// Normalize the coords:
	if (a_MinBlockX > a_MaxBlockX)
	{
		std::swap(a_MinBlockX, a_MaxBlockX);
	}
	if (a_MinBlockY > a_MaxBlockY)
	{
		std::swap(a_MinBlockY, a_MaxBlockY);
	}
	if (a_MinBlockZ > a_MaxBlockZ)
	{
		std::swap(a_MinBlockZ, a_MaxBlockZ);
	}
	
	// Include the Max coords:
	a_MaxBlockX += 1;
	a_MaxBlockY += 1;
	a_MaxBlockZ += 1;
	
	// Check coords validity:
	if (a_MinBlockY < 0)
	{
		LOGWARNING("%s: MinBlockY less than zero, adjusting to zero", __FUNCTION__);
		a_MinBlockY = 0;
	}
	else if (a_MinBlockY >= cChunkDef::Height)
	{
		LOGWARNING("%s: MinBlockY more than chunk height, adjusting to chunk height", __FUNCTION__);
		a_MinBlockY = cChunkDef::Height - 1;
	}
	if (a_MaxBlockY < 0)
	{
		LOGWARNING("%s: MaxBlockY less than zero, adjusting to zero", __FUNCTION__);
		a_MaxBlockY = 0;
	}
	else if (a_MaxBlockY > cChunkDef::Height)
	{
		LOGWARNING("%s: MaxBlockY more than chunk height, adjusting to chunk height", __FUNCTION__);
		a_MaxBlockY = cChunkDef::Height;
	}
	
	// Allocate the needed memory:
	Clear();
	if (!SetSize(a_MaxBlockX - a_MinBlockX, a_MaxBlockY - a_MinBlockY, a_MaxBlockZ - a_MinBlockZ, a_DataTypes))
	{
		return false;
	}
	m_Origin.Set(a_MinBlockX, a_MinBlockY, a_MinBlockZ);
	cChunkReader Reader(*this);
	
	// Convert block coords to chunks coords:
	int MinChunkX, MaxChunkX;
	int MinChunkZ, MaxChunkZ;
	cChunkDef::AbsoluteToRelative(a_MinBlockX, a_MinBlockY, a_MinBlockZ, MinChunkX, MinChunkZ);
	cChunkDef::AbsoluteToRelative(a_MaxBlockX, a_MaxBlockY, a_MaxBlockZ, MaxChunkX, MaxChunkZ);