Method GetFlowingDirection

src/Simulator/FluidSimulator.cpp:121–206

TODO Not working very well yet :s

// TODO Not working very well yet :s
Direction cFluidSimulator::GetFlowingDirection(int a_X, int a_Y, int a_Z, bool a_Over)
{
	if ((a_Y < 0) || (a_Y >= cChunkDef::Height))
	{
		return NONE;
	}
	BLOCKTYPE BlockID = m_World.GetBlock(a_X, a_Y, a_Z);
	if (!IsAllowedBlock(BlockID))	// No Fluid -> No Flowing direction :D
	{
		return NONE;
	}

	/*
	Disabled because of causing problems and being useless atm
	char BlockBelow = m_World.GetBlock(a_X, a_Y - 1, a_Z);		//If there is nothing or fluid below it -> dominating flow is down :D
	if (BlockBelow == E_BLOCK_AIR || IsAllowedBlock(BlockBelow))
		return Y_MINUS;
	*/

	NIBBLETYPE LowestPoint = m_World.GetBlockMeta(a_X, a_Y, a_Z);	//Current Block Meta so only lower points will be counted
	int X = 0, Z = 0;									//Lowest Pos will be stored here

	if (IsAllowedBlock(m_World.GetBlock(a_X, a_Y + 1, a_Z)) && a_Over)		//check for upper block to flow because this also affects the flowing direction
	{
		return GetFlowingDirection(a_X, a_Y + 1, a_Z, false);
	}

	std::vector< Vector3i * > Points;

	Points.reserve(4);	//Already allocate 4 places :D

	//add blocks around the checking pos
	Points.push_back(new Vector3i(a_X - 1, a_Y, a_Z));
	Points.push_back(new Vector3i(a_X + 1, a_Y, a_Z));
	Points.push_back(new Vector3i(a_X, a_Y, a_Z + 1));
	Points.push_back(new Vector3i(a_X, a_Y, a_Z - 1));

	for (std::vector<Vector3i *>::iterator it = Points.begin(); it < Points.end(); it++)
	{
		Vector3i *Pos = (*it);
		char BlockID = m_World.GetBlock(Pos->x, Pos->y, Pos->z);
		if(IsAllowedBlock(BlockID))
		{
			char Meta = m_World.GetBlockMeta(Pos->x, Pos->y, Pos->z);

			if(Meta > LowestPoint)
			{
				LowestPoint = Meta;
				X = Pos->x;
				Z = Pos->z;
			}
		}else if(BlockID == E_BLOCK_AIR)
		{
			LowestPoint = 9;		//This always dominates
			X = Pos->x;
			Z = Pos->z;
		
		}