From 9f882bf74d452521cb7fb1806ab453aaa28da343 Mon Sep 17 00:00:00 2001
From: Perttu Ahola <celeron55@gmail.com>
Date: Wed, 26 Jan 2011 00:41:06 +0200
Subject: Reworked texture, material, mineral and whatever handling

---
 src/voxel.cpp | 635 +---------------------------------------------------------
 1 file changed, 1 insertion(+), 634 deletions(-)

(limited to 'src/voxel.cpp')

diff --git a/src/voxel.cpp b/src/voxel.cpp
index 272e11ccc..d68a8db02 100644
--- a/src/voxel.cpp
+++ b/src/voxel.cpp
@@ -110,7 +110,7 @@ void VoxelManipulator::print(std::ostream &o, VoxelPrintMode mode)
 							if(pr <= 9)
 								c = pr + '0';
 						}
-						else if(liquid_replaces_content(m))
+						else if(m == CONTENT_AIR)
 						{
 							c = ' ';
 						}
@@ -653,637 +653,4 @@ void VoxelManipulator::spreadLight(enum LightBank bank,
 }
 #endif
 
-#if 0
-int VoxelManipulator::getWaterPressure(v3s16 p, s16 &highest_y, int recur_count)
-{
-	m_flags[m_area.index(p)] |= VOXELFLAG_CHECKED2;
-
-	if(p.Y > highest_y)
-		highest_y = p.Y;
-	
-	/*if(recur_count > 1000)
-		throw ProcessingLimitException
-				("getWaterPressure recur_count limit reached");*/
-	
-	if(recur_count > 10000)
-		return -1;
-	
-	recur_count++;
-
-	v3s16 dirs[6] = {
-		v3s16(0,1,0), // top
-		v3s16(0,0,1), // back
-		v3s16(0,0,-1), // front
-		v3s16(1,0,0), // right
-		v3s16(-1,0,0), // left
-		v3s16(0,-1,0), // bottom
-	};
-
-	// Load neighboring nodes
-	emerge(VoxelArea(p - v3s16(1,1,1), p + v3s16(1,1,1)), 1);
-
-	s32 i;
-	for(i=0; i<6; i++)
-	{
-		v3s16 p2 = p + dirs[i];
-		u8 f = m_flags[m_area.index(p2)];
-		// Ignore inexistent or checked nodes
-		if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED2))
-			continue;
-		MapNode &n = m_data[m_area.index(p2)];
-		// Ignore non-liquid nodes
-		if(content_liquid(n.d) == false)
-			continue;
-
-		int pr;
-
-		// If at ocean surface
-		if(n.pressure == 1 && n.d == CONTENT_WATERSOURCE)
-		//if(n.pressure == 1) // Causes glitches but is fast
-		{
-			pr = 1;
-		}
-		// Otherwise recurse more
-		else
-		{
-			pr = getWaterPressure(p2, highest_y, recur_count);
-			if(pr == -1)
-				continue;
-		}
-
-		// If block is at top, pressure here is one higher
-		if(i == 0)
-		{
-			if(pr < 255)
-				pr++;
-		}
-		// If block is at bottom, pressure here is one lower
-		else if(i == 5)
-		{
-			if(pr > 1)
-				pr--;
-		}
-		
-		// Node is on the pressure route
-		m_flags[m_area.index(p)] |= VOXELFLAG_CHECKED4;
-
-		// Got pressure
-		return pr;
-	}
-	
-	// Nothing useful found
-	return -1;
-}
-
-void VoxelManipulator::spreadWaterPressure(v3s16 p, int pr,
-		VoxelArea request_area,
-		core::map<v3s16, u8> &active_nodes,
-		int recur_count)
-{
-	//if(recur_count > 10000)
-		/*throw ProcessingLimitException
-				("spreadWaterPressure recur_count limit reached");*/
-	if(recur_count > 10)
-		return;
-	recur_count++;
-	
-	/*dstream<<"spreadWaterPressure: p=("
-			<<p.X<<","<<p.Y<<","<<p.Z<<")"
-			<<", oldpr="<<(int)m_data[m_area.index(p)].pressure
-			<<", pr="<<pr
-			<<", recur_count="<<recur_count
-			<<", request_area=";
-	request_area.print(dstream);
-	dstream<<std::endl;*/
-
-	m_flags[m_area.index(p)] |= VOXELFLAG_CHECKED3;
-	m_data[m_area.index(p)].pressure = pr;
-
-	v3s16 dirs[6] = {
-		v3s16(0,1,0), // top
-		v3s16(-1,0,0), // left
-		v3s16(1,0,0), // right
-		v3s16(0,0,-1), // front
-		v3s16(0,0,1), // back
-		v3s16(0,-1,0), // bottom
-	};
-
-	// Load neighboring nodes
-	emerge(VoxelArea(p - v3s16(1,1,1), p + v3s16(1,1,1)), 2);
-
-	s32 i;
-	for(i=0; i<6; i++)
-	{
-		v3s16 p2 = p + dirs[i];
-		
-		u8 f = m_flags[m_area.index(p2)];
-
-		// Ignore inexistent and checked nodes
-		if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED3))
-			continue;
-
-		MapNode &n = m_data[m_area.index(p2)];
-		
-		/*
-			If material is air:
-				add to active_nodes if there is flow-causing pressure.
-			NOTE: Do not remove anything from there. We cannot know
-			      here if some other neighbor of it causes flow.
-		*/
-		if(liquid_replaces_content(n.d))
-		{
-			bool pressure_causes_flow = false;
-			// If empty block is at top
-			if(i == 0)
-			{
-				if(m_disable_water_climb)
-					continue;
-				
-				//if(pr >= PRESERVE_WATER_VOLUME ? 3 : 2)
-				if(pr >= 3)
-					pressure_causes_flow = true;
-			}
-			// If block is at bottom
-			else if(i == 5)
-			{
-				pressure_causes_flow = true;
-			}
-			// If block is at side
-			else
-			{
-				//if(pr >= PRESERVE_WATER_VOLUME ? 2 : 1)
-				if(pr >= 2)
-					pressure_causes_flow = true;
-			}
-			
-			if(pressure_causes_flow)
-			{
-				active_nodes[p2] = 1;
-			}
-
-			continue;
-		}
-
-		// Ignore non-liquid nodes
-		if(content_liquid(n.d) == false)
-			continue;
-
-		int pr2 = pr;
-		// If block is at top, pressure there is lower
-		if(i == 0)
-		{
-			if(pr2 > 0)
-				pr2--;
-		}
-		// If block is at bottom, pressure there is higher
-		else if(i == 5)
-		{
-			if(pr2 < 255)
-				pr2++;
-		}
-
-		/*if(m_disable_water_climb)
-		{
-			if(pr2 > 3)
-				pr2 = 3;
-		}*/
-		
-		// Ignore if correct pressure is already set and is not on
-		// request_area.
-		// Thus, request_area can be used for updating as much
-		// pressure info in some area as possible to possibly
-		// make some calls to getWaterPressure unnecessary.
-		if(n.pressure == pr2 && request_area.contains(p2) == false)
-			continue;
-
-		spreadWaterPressure(p2, pr2, request_area, active_nodes, recur_count);
-	}
-}
-
-void VoxelManipulator::updateAreaWaterPressure(VoxelArea a,
-		core::map<v3s16, u8> &active_nodes,
-		bool checked3_is_clear)
-{
-	TimeTaker timer("updateAreaWaterPressure", &updateareawaterpressure_time);
-
-	emerge(a, 3);
-	
-	bool checked2_clear = false;
-	
-	if(checked3_is_clear == false)
-	{
-		//clearFlag(VOXELFLAG_CHECKED3);
-
-		clearFlag(VOXELFLAG_CHECKED3 | VOXELFLAG_CHECKED2);
-		checked2_clear = true;
-	}
-	
-
-	for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
-	for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
-	for(s32 x=a.MinEdge.X; x<=a.MaxEdge.X; x++)
-	{
-		v3s16 p(x,y,z);
-
-		u8 f = m_flags[m_area.index(p)];
-		// Ignore inexistent or checked nodes
-		if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED3))
-			continue;
-		MapNode &n = m_data[m_area.index(p)];
-		// Ignore non-liquid nodes
-		if(content_liquid(n.d) == false)
-			continue;
-		
-		if(checked2_clear == false)
-		{
-			clearFlag(VOXELFLAG_CHECKED2);
-			checked2_clear = true;
-		}
-
-		checked2_clear = false;
-
-		s16 highest_y = -32768;
-		int recur_count = 0;
-		int pr = -1;
-
-		try
-		{
-			// 0-1ms @ recur_count <= 100
-			//TimeTaker timer("getWaterPressure", g_irrlicht);
-			pr = getWaterPressure(p, highest_y, recur_count);
-		}
-		catch(ProcessingLimitException &e)
-		{
-			//dstream<<"getWaterPressure ProcessingLimitException"<<std::endl;
-		}
-
-		if(pr == -1)
-		{
-			assert(highest_y != -32768);
-
-			pr = highest_y - p.Y + 1;
-			if(pr > 255)
-				pr = 255;
-
-			/*dstream<<"WARNING: Pressure at ("
-					<<p.X<<","<<p.Y<<","<<p.Z<<")"
-					<<" = "<<pr
-					//<<" and highest_y == -32768"
-					<<std::endl;
-			assert(highest_y != -32768);
-			continue;*/
-		}
-		
-		try
-		{
-			// 0ms
-			//TimeTaker timer("spreadWaterPressure", g_irrlicht);
-			spreadWaterPressure(p, pr, a, active_nodes, 0);
-		}
-		catch(ProcessingLimitException &e)
-		{
-			//dstream<<"getWaterPressure ProcessingLimitException"<<std::endl;
-		}
-	}
-}
-
-bool VoxelManipulator::flowWater(v3s16 removed_pos,
-		core::map<v3s16, u8> &active_nodes,
-		int recursion_depth, bool debugprint,
-		u32 stoptime)
-{
-	v3s16 dirs[6] = {
-		v3s16(0,1,0), // top
-		v3s16(0,0,-1), // front
-		v3s16(0,0,1), // back
-		v3s16(-1,0,0), // left
-		v3s16(1,0,0), // right
-		v3s16(0,-1,0), // bottom
-	};
-
-	recursion_depth++;
-
-	v3s16 p;
-	bool from_ocean = false;
-	
-	// Randomize horizontal order
-	static s32 cs = 0;
-	if(cs < 3)
-		cs++;
-	else
-		cs = 0;
-	s16 s1 = (cs & 1) ? 1 : -1;
-	s16 s2 = (cs & 2) ? 1 : -1;
-	//dstream<<"s1="<<s1<<", s2="<<s2<<std::endl;
-
-	{
-	TimeTaker timer1("flowWater pre", &flowwater_pre_time);
-	
-	// Load neighboring nodes
-	emerge(VoxelArea(removed_pos - v3s16(1,1,1), removed_pos + v3s16(1,1,1)), 4);
-	
-	// Ignore incorrect removed_pos
-	{
-		u8 f = m_flags[m_area.index(removed_pos)];
-		// Ignore inexistent or checked node
-		if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED))
-			return false;
-		MapNode &n = m_data[m_area.index(removed_pos)];
-		// Ignore nodes to which the water can't go
-		if(liquid_replaces_content(n.d) == false)
-			return false;
-	}
-	
-	s32 i;
-	for(i=0; i<6; i++)
-	{
-		// Don't raise water from bottom
-		if(m_disable_water_climb && i == 5)
-			continue;
-
-		p = removed_pos + v3s16(s1*dirs[i].X, dirs[i].Y, s2*dirs[i].Z);
-
-		u8 f = m_flags[m_area.index(p)];
-		// Inexistent or checked nodes can't move
-		if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED))
-			continue;
-		MapNode &n = m_data[m_area.index(p)];
-		// Only liquid nodes can move
-		if(content_liquid(n.d) == false)
-			continue;
-		// If block is at top, select it always
-		if(i == 0)
-		{
-			break;
-		}
-		// If block is at bottom, select it if it has enough pressure
-		if(i == 5)
-		{
-			//if(n.pressure >= PRESERVE_WATER_VOLUME ? 3 : 2)
-			if(n.pressure >= 3)
-				break;
-			continue;
-		}
-		// Else block is at some side. Select it if it has enough pressure
-		//if(n.pressure >= PRESERVE_WATER_VOLUME ? 2 : 1)
-		if(n.pressure >= 2)
-		{
-			break;
-		}
-	}
-
-	// If there is nothing to move, return
-	if(i==6)
-		return false;
-
-	/*
-		Move water and bubble
-	*/
-
-	u8 m = m_data[m_area.index(p)].d;
-	u8 f = m_flags[m_area.index(p)];
-
-	if(m == CONTENT_WATERSOURCE)
-		from_ocean = true;
-
-	// Move air bubble if not taking water from ocean
-	if(from_ocean == false)
-	{
-		m_data[m_area.index(p)].d = m_data[m_area.index(removed_pos)].d;
-		m_flags[m_area.index(p)] = m_flags[m_area.index(removed_pos)];
-	}
-	
-	/*
-		This has to be done to copy the brightness of a light source
-		correctly. Otherwise unspreadLight will fuck up when water
-		has replaced a light source.
-	*/
-	u8 light = m_data[m_area.index(removed_pos)].getLightBanksWithSource();
-
-	m_data[m_area.index(removed_pos)].d = m;
-	m_flags[m_area.index(removed_pos)] = f;
-
-	m_data[m_area.index(removed_pos)].setLightBanks(light);
-	
-	// Mark removed_pos checked
-	m_flags[m_area.index(removed_pos)] |= VOXELFLAG_CHECKED;
-
-	// If block was dropped from surface, increase pressure
-	if(i == 0 && m_data[m_area.index(removed_pos)].pressure == 1)
-	{
-		m_data[m_area.index(removed_pos)].pressure = 2;
-	}
-	
-	/*
-	NOTE: This does not work as-is
-	if(m == CONTENT_WATERSOURCE)
-	{
-		// If block was raised to surface, increase pressure of
-		// source node
-		if(i == 5 && m_data[m_area.index(p)].pressure == 1)
-		{
-			m_data[m_area.index(p)].pressure = 2;
-		}
-	}*/
-	
-	/*if(debugprint)
-	{
-		dstream<<"VoxelManipulator::flowWater(): Moved bubble:"<<std::endl;
-		print(dstream, VOXELPRINT_WATERPRESSURE);
-	}*/
-
-	// Update pressure
-	VoxelArea a;
-	a.addPoint(p - v3s16(1,1,1));
-	a.addPoint(p + v3s16(1,1,1));
-	a.addPoint(removed_pos - v3s16(1,1,1));
-	a.addPoint(removed_pos + v3s16(1,1,1));
-	updateAreaWaterPressure(a, active_nodes);
-	
-	/*if(debugprint)
-	{
-		dstream<<"VoxelManipulator::flowWater(): Pressure updated:"<<std::endl;
-		print(dstream, VOXELPRINT_WATERPRESSURE);
-		//std::cin.get();
-	}*/
-
-	if(debugprint)
-	{
-		dstream<<"VoxelManipulator::flowWater(): step done:"<<std::endl;
-		print(dstream, VOXELPRINT_WATERPRESSURE);
-		//std::cin.get();
-	}
-	
-	}//timer1
-	
-	//if(PRESERVE_WATER_VOLUME)
-	if(from_ocean == false)
-	{
-		// Flow water to the newly created empty position
-		/*flowWater(p, active_nodes, recursion_depth,
-				debugprint, counter, counterlimit);*/
-		flowWater(p, active_nodes, recursion_depth,
-				debugprint, stoptime);
-	}
-	
-	if(stoptime != 0)
-	{
-		u32 timenow = getTimeMs();
-		// Well, it is a bit hard to guess because we don't know the
-		// start time...
-		bool overflow = timenow < stoptime - 100000;
-		if(timenow >= stoptime || overflow)
-		{
-			dstream<<"flowWater: stoptime reached"<<std::endl;
-			throw ProcessingLimitException("flowWater stoptime reached");
-		}
-	}
-	
-find_again:
-	
-	// Try flowing water to empty positions around removed_pos.
-	// They are checked in reverse order compared to the previous loop.
-	for(s32 i=5; i>=0; i--)
-	{
-		// Don't try to flow to top
-		if(m_disable_water_climb && i == 0)
-			continue;
-
-		//v3s16 p = removed_pos + dirs[i];
-		p = removed_pos + v3s16(s1*dirs[i].X, dirs[i].Y, s2*dirs[i].Z);
-
-		u8 f = m_flags[m_area.index(p)];
-		// Water can't move to inexistent nodes
-		if(f & VOXELFLAG_INEXISTENT)
-			continue;
-		MapNode &n = m_data[m_area.index(p)];
-		// Water can only move to air
-		if(liquid_replaces_content(n.d) == false)
-			continue;
-			
-		// Flow water to node
-		bool moved =
-		flowWater(p, active_nodes, recursion_depth,
-				debugprint, stoptime);
-		/*flowWater(p, active_nodes, recursion_depth,
-				debugprint, counter, counterlimit);*/
-		
-		if(moved)
-		{
-			// Search again from all neighbors
-			goto find_again;
-		}
-	}
-
-	return true;
-}
-
-void VoxelManipulator::flowWater(
-		core::map<v3s16, u8> &active_nodes,
-		int recursion_depth, bool debugprint,
-		u32 timelimit)
-{
-	addarea_time = 0;
-	emerge_time = 0;
-	emerge_load_time = 0;
-	clearflag_time = 0;
-	updateareawaterpressure_time = 0;
-	flowwater_pre_time = 0;
-
-	if(active_nodes.size() == 0)
-	{
-		dstream<<"flowWater: no active nodes"<<std::endl;
-		return;
-	}
-
-	//TimeTaker timer1("flowWater (active_nodes)", g_irrlicht);
-
-	//dstream<<"active_nodes.size() = "<<active_nodes.size()<<std::endl;
-
-
-	u32 stoptime = 0;
-	stoptime = getTimeMs() + timelimit;
-
-	// Count of handled active nodes
-	u32 handled_count = 0;
-
-	try
-	{
-
-	/*
-		Take random one at first
-
-		This is randomized only at the first time so that all
-		subsequent nodes will be taken at roughly the same position
-	*/
-	s32 k = 0;
-	if(active_nodes.size() != 0)
-		k = (s32)myrand() % (s32)active_nodes.size();
-
-	// Flow water to active nodes
-	for(;;)
-	//for(s32 h=0; h<1; h++)
-	{
-		if(active_nodes.size() == 0)
-			break;
-
-		handled_count++;
-		
-		// Clear check flags
-		clearFlag(VOXELFLAG_CHECKED);
-		
-		//dstream<<"Selecting a new active_node"<<std::endl;
-
-#if 0
-		// Take first one
-		core::map<v3s16, u8>::Node
-				*n = active_nodes.getIterator().getNode();
-#endif
-
-#if 1
-		
-		core::map<v3s16, u8>::Iterator
-				i = active_nodes.getIterator().getNode();
-		for(s32 j=0; j<k; j++)
-		{
-			i++;
-		}
-		core::map<v3s16, u8>::Node *n = i.getNode();
-
-		// Decrement index if less than 0.
-		// This keeps us in existing indices always.
-		if(k > 0)
-			k--;
-#endif
-
-		v3s16 p = n->getKey();
-		active_nodes.remove(p);
-		flowWater(p, active_nodes, recursion_depth,
-				debugprint, stoptime);
-	}
-
-	}
-	catch(ProcessingLimitException &e)
-	{
-		//dstream<<"getWaterPressure ProcessingLimitException"<<std::endl;
-	}
-	
-	/*v3s16 e = m_area.getExtent();
-	s32 v = m_area.getVolume();
-	dstream<<"flowWater (active): "
-			<<"area ended up as "
-			<<e.X<<"x"<<e.Y<<"x"<<e.Z<<" = "<<v
-			<<", handled a_node count: "<<handled_count
-			<<", active_nodes.size() = "<<active_nodes.size()
-			<<std::endl;
-	dstream<<"addarea_time: "<<addarea_time
-			<<", emerge_time: "<<emerge_time
-			<<", emerge_load_time: "<<emerge_load_time
-			<<", clearflag_time: "<<clearflag_time
-			<<", flowwater_pre_time: "<<flowwater_pre_time
-			<<", updateareawaterpressure_time: "<<updateareawaterpressure_time
-			<<std::endl;*/
-}
-#endif
-
 //END
-- 
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