Remove liquid_finite and weather

15 files changed, 8 insertions, 812 deletions

diff --git a/src/biome.cpp b/src/biome.cpp
index dca900cbb..e1dfc47af 100644
--- a/src/biome.cpp
+++ b/src/biome.cpp
@@ -203,54 +203,3 @@ u8 BiomeDefManager::getBiomeIdByName(const char *name) {
 	
 	return 0;
 }
-
-
-///////////////////////////// Weather
-
-
-s16 BiomeDefManager::calcBlockHeat(v3s16 p, u64 seed, float timeofday, float totaltime) {
-	//variant 1: full random
-	//f32 heat = NoisePerlin3D(np_heat, p.X, env->getGameTime()/100, p.Z, seed);
-
-	//variant 2: season change based on default heat map
-	const f32 offset = 20; // = np_heat->offset
-	const f32 scale  = 20; // = np_heat->scale
-	const f32 range  = 20;
-	f32 heat = NoisePerlin2D(np_heat, p.X, p.Z, seed); // 0..50..100
-
-	heat -= np_heat->offset; // -50..0..+50
-
-	// normalizing - todo REMOVE after fixed NoiseParams nparams_biome_def_heat = {50, 50, -> 20, 50,
-	if (np_heat->scale)
-		heat /= np_heat->scale / scale; //  -20..0..+20
-
-	f32 seasonv = totaltime;
-	seasonv /= 86400 * g_settings->getS16("year_days"); // season change speed
-	seasonv += (f32)p.X / 3000; // you can walk to area with other season
-	seasonv = sin(seasonv * M_PI);
-	heat += (range * (heat < 0 ? 2 : 0.5)) * seasonv; // -60..0..30
-
-	heat += offset; // -40..0..50
-	heat += p.Y / -333; // upper=colder, lower=hotter, 3c per 1000
-
-	// daily change, hotter at sun +4, colder at night -4
-	heat += 8 * (sin(cycle_shift(timeofday, -0.25) * M_PI) - 0.5); //-44..20..54
-	
-	return heat;
-}
-
-
-s16 BiomeDefManager::calcBlockHumidity(v3s16 p, u64 seed, float timeofday, float totaltime) {
-
-	f32 humidity = NoisePerlin2D(np_humidity, p.X, p.Z, seed);
-
-	f32 seasonv = totaltime;
-	seasonv /= 86400 * 2; // bad weather change speed (2 days)
-	seasonv += (f32)p.Z / 300;
-	humidity += 30 * sin(seasonv * M_PI);
-
-	humidity += -12 * (sin(cycle_shift(timeofday, -0.1) * M_PI) - 0.5);
-	humidity = rangelim(humidity, 0, 100);
-	
-	return humidity;
-}
diff --git a/src/constants.h b/src/constants.h
index 17f5d389a..8c478ac6a 100644
--- a/src/constants.h
+++ b/src/constants.h
@@ -89,11 +89,5 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 // Maximum hit points of a player
 #define PLAYER_MAX_HP 20
 
-/*
-	Environmental condition constants
-*/
-#define HEAT_UNDEFINED     (-0x7fff-1)
-#define HUMIDITY_UNDEFINED (-0x7fff-1)
-
 #endif
 
diff --git a/src/content_abm.cpp b/src/content_abm.cpp
index 9289035b8..1ee41b2ec 100644
--- a/src/content_abm.cpp
+++ b/src/content_abm.cpp
@@ -32,216 +32,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
 
-class LiquidFlowABM : public ActiveBlockModifier {
-	private:
-		std::set<std::string> contents;
-
-	public:
-		LiquidFlowABM(ServerEnvironment *env, INodeDefManager *nodemgr) {
-			std::set<content_t> liquids;
-			nodemgr->getIds("group:liquid", liquids);
-			for(std::set<content_t>::const_iterator k = liquids.begin(); k != liquids.end(); k++)
-				contents.insert(nodemgr->get(*k).liquid_alternative_flowing);
-		}
-		virtual std::set<std::string> getTriggerContents() {
-			return contents;
-		}
-		virtual float getTriggerInterval()
-		{ return 10.0; }
-		virtual u32 getTriggerChance()
-		{ return 10; }
-		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
-			ServerMap *map = &env->getServerMap();
-			if (map->transforming_liquid_size() > 500)
-				return;
-			map->transforming_liquid_add(p);
-		}
-};
-
-class LiquidDropABM : public ActiveBlockModifier {
-	private:
-		std::set<std::string> contents;
-
-	public:
-		LiquidDropABM(ServerEnvironment *env, INodeDefManager *nodemgr) {
-			std::set<content_t> liquids;
-			nodemgr->getIds("group:liquid", liquids);
-			for(std::set<content_t>::const_iterator k = liquids.begin(); k != liquids.end(); k++)
-				contents.insert(nodemgr->get(*k).liquid_alternative_source);
-		}
-		virtual std::set<std::string> getTriggerContents()
-		{ return contents; }
-		virtual std::set<std::string> getRequiredNeighbors() {
-			std::set<std::string> neighbors;
-			neighbors.insert("air");
-			return neighbors;
-		}
-		virtual float getTriggerInterval()
-		{ return 20.0; }
-		virtual u32 getTriggerChance()
-		{ return 10; }
-		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
-			ServerMap *map = &env->getServerMap();
-			if (map->transforming_liquid_size() > 500)
-				return;
-			if (   map->getNodeNoEx(p - v3s16(0,  1, 0 )).getContent() != CONTENT_AIR  // below
-			    && map->getNodeNoEx(p - v3s16(1,  0, 0 )).getContent() != CONTENT_AIR  // right
-			    && map->getNodeNoEx(p - v3s16(-1, 0, 0 )).getContent() != CONTENT_AIR  // left
-			    && map->getNodeNoEx(p - v3s16(0,  0, 1 )).getContent() != CONTENT_AIR  // back
-			    && map->getNodeNoEx(p - v3s16(0,  0, -1)).getContent() != CONTENT_AIR  // front
-			   )
-				return;
-			map->transforming_liquid_add(p);
-		}
-};
-
-class LiquidFreeze : public ActiveBlockModifier {
-	public:
-		LiquidFreeze(ServerEnvironment *env, INodeDefManager *nodemgr) { }
-		virtual std::set<std::string> getTriggerContents() {
-			std::set<std::string> s;
-			s.insert("group:freezes");
-			return s;
-		}
-		virtual std::set<std::string> getRequiredNeighbors() {
-			std::set<std::string> s;
-			s.insert("air");
-			s.insert("group:melts");
-			return s;
-		}
-		virtual float getTriggerInterval()
-		{ return 10.0; }
-		virtual u32 getTriggerChance()
-		{ return 20; }
-		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
-			ServerMap *map = &env->getServerMap();
-			INodeDefManager *ndef = env->getGameDef()->ndef();
-
-			float heat = map->updateBlockHeat(env, p);
-			//heater = rare
-			content_t c = map->getNodeNoEx(p - v3s16(0,  -1, 0 )).getContent(); // top
-			//more chance to freeze if air at top
-			if (heat <= -1 && (heat <= -50 || (myrand_range(-50, heat) <= (c == CONTENT_AIR ? -10 : -40)))) {
-				content_t c_self = n.getContent();
-				// making freeze not annoying, do not freeze random blocks in center of ocean
-				// todo: any block not water (dont freeze _source near _flowing)
-				bool allow = heat < -40;
-				// todo: make for(...)
-				if (!allow) {
-				 c = map->getNodeNoEx(p - v3s16(0,  1, 0 )).getContent(); // below
-				 if (c == CONTENT_AIR || c == CONTENT_IGNORE)
-					return; // do not freeze when falling
-				 if (c != c_self && c != CONTENT_IGNORE) allow = 1;
-				 if (!allow) {
-				  c = map->getNodeNoEx(p - v3s16(1,  0, 0 )).getContent(); // right
-				  if (c != c_self && c != CONTENT_IGNORE) allow = 1;
-				  if (!allow) {
-				   c = map->getNodeNoEx(p - v3s16(-1, 0, 0 )).getContent(); // left
-				   if (c != c_self && c != CONTENT_IGNORE) allow = 1;
-				   if (!allow) {
-				    c = map->getNodeNoEx(p - v3s16(0,  0, 1 )).getContent(); // back
-				    if (c != c_self && c != CONTENT_IGNORE) allow = 1;
-				    if (!allow) {
-				     c = map->getNodeNoEx(p - v3s16(0,  0, -1)).getContent(); // front
-				     if (c != c_self && c != CONTENT_IGNORE) allow = 1;
-				    }
-				   }
-				  }
-				 }
-				}
-				if (allow) {
-					n.freezeMelt(ndef);
-					map->addNodeWithEvent(p, n);
-				}
-			}
-		}
-};
-
-class LiquidMeltWeather : public ActiveBlockModifier {
-	public:
-		LiquidMeltWeather(ServerEnvironment *env, INodeDefManager *nodemgr) { }
-		virtual std::set<std::string> getTriggerContents() {
-			std::set<std::string> s;
-			s.insert("group:melts");
-			return s;
-		}
-		virtual std::set<std::string> getRequiredNeighbors() {
-			std::set<std::string> s;
-			s.insert("air");
-			s.insert("group:freezes");
-			return s;
-		}
-		virtual float getTriggerInterval()
-		{ return 10.0; }
-		virtual u32 getTriggerChance()
-		{ return 20; }
-		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
-			ServerMap *map = &env->getServerMap();
-			INodeDefManager *ndef = env->getGameDef()->ndef();
-
-			float heat = map->updateBlockHeat(env, p);
-			content_t c = map->getNodeNoEx(p - v3s16(0,  -1, 0 )).getContent(); // top
-			if (heat >= 1 && (heat >= 40 || ((myrand_range(heat, 40)) >= (c == CONTENT_AIR ? 10 : 20)))) {
-				n.freezeMelt(ndef);
-				map->addNodeWithEvent(p, n);
-				env->getScriptIface()->node_falling_update(p);
-			}
-		}
-};
-
-class LiquidMeltHot : public ActiveBlockModifier {
-	public:
-		LiquidMeltHot(ServerEnvironment *env, INodeDefManager *nodemgr) { }
-		virtual std::set<std::string> getTriggerContents() {
-			std::set<std::string> s;
-			s.insert("group:melts");
-			return s;
-		}
-		virtual std::set<std::string> getRequiredNeighbors() {
-			std::set<std::string> s;
-			s.insert("group:igniter");
-			s.insert("group:hot");
-			return s;
-		}
-		virtual float getTriggerInterval()
-		{ return 2.0; }
-		virtual u32 getTriggerChance()
-		{ return 4; }
-		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
-			ServerMap *map = &env->getServerMap();
-			INodeDefManager *ndef = env->getGameDef()->ndef();
-			n.freezeMelt(ndef);
-			map->addNodeWithEvent(p, n);
-			env->getScriptIface()->node_falling_update(p);
-		}
-};
-
-/* too buggy, later via liquid flow code
-class LiquidMeltAround : public LiquidMeltHot {
-	public:
-		LiquidMeltAround(ServerEnvironment *env, INodeDefManager *nodemgr) 
-			: LiquidMeltHot(env, nodemgr) { }
-		virtual std::set<std::string> getRequiredNeighbors() {
-			std::set<std::string> s;
-			s.insert("group:melt_around");
-			return s;
-		}
-		virtual float getTriggerInterval()
-		{ return 40.0; }
-		virtual u32 getTriggerChance()
-		{ return 60; }
-};
-*/
-
 void add_legacy_abms(ServerEnvironment *env, INodeDefManager *nodedef) {
-	if (g_settings->getBool("liquid_finite")) {
-		env->addActiveBlockModifier(new LiquidFlowABM(env, nodedef));
-		env->addActiveBlockModifier(new LiquidDropABM(env, nodedef));
-		env->addActiveBlockModifier(new LiquidMeltHot(env, nodedef));
-		//env->addActiveBlockModifier(new LiquidMeltAround(env, nodedef));
-		if (env->m_use_weather) {
-			env->addActiveBlockModifier(new LiquidFreeze(env, nodedef));
-			env->addActiveBlockModifier(new LiquidMeltWeather(env, nodedef));
-		}
-	}
+
 }
diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp
index c39fa54a9..ff3bf5b88 100644
--- a/src/defaultsettings.cpp
+++ b/src/defaultsettings.cpp
@@ -244,13 +244,8 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("movement_gravity", "9.81");
 
 	//liquid stuff
-	settings->setDefault("liquid_finite", "false");
 	settings->setDefault("liquid_loop_max", "10000");
 	settings->setDefault("liquid_update", "1.0");
-	settings->setDefault("liquid_relax", "2");
-	settings->setDefault("liquid_fast_flood", "1");
-	settings->setDefault("underground_springs", "1");
-	settings->setDefault("weather", "false");
 
 	//mapgen stuff
 	settings->setDefault("mg_name", "v6");
diff --git a/src/environment.cpp b/src/environment.cpp
index bc1b59d89..fa7ce2ae5 100644
--- a/src/environment.cpp
+++ b/src/environment.cpp
@@ -321,7 +321,6 @@ ServerEnvironment::ServerEnvironment(ServerMap *map,
 	m_recommended_send_interval(0.1),
 	m_max_lag_estimate(0.1)
 {
-	m_use_weather = g_settings->getBool("weather");
 }
 
 ServerEnvironment::~ServerEnvironment()
diff --git a/src/environment.h b/src/environment.h
index 48d099bf9..5062b9c37 100644
--- a/src/environment.h
+++ b/src/environment.h
@@ -314,9 +314,6 @@ public:
 	void reportMaxLagEstimate(float f) { m_max_lag_estimate = f; }
 	float getMaxLagEstimate() { return m_max_lag_estimate; }
 	
-	// is weather active in this environment?
-	bool m_use_weather;
-	
 	std::set<v3s16>* getForceloadedBlocks() { return &m_active_blocks.m_forceloaded_list; };
 	
 private:
diff --git a/src/game.cpp b/src/game.cpp
index 1ad06acb1..a4a21e0a9 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -1642,8 +1642,6 @@ void the_game(bool &kill, bool random_input, InputHandler *input,
 	Hud hud(driver, smgr, guienv, font, text_height,
 			gamedef, player, &local_inventory);
 
-	bool use_weather = g_settings->getBool("weather");
-
 	core::stringw str = L"Minetest [";
 	str += driver->getName();
 	str += "]";
@@ -3111,8 +3109,6 @@ void the_game(bool &kill, bool random_input, InputHandler *input,
 			fog_range = 100000*BS;
 		else {
 			fog_range = draw_control.wanted_range*BS + 0.0*MAP_BLOCKSIZE*BS;
-			if(use_weather)
-				fog_range *= (1.5 - 1.4*(float)client.getEnv().getClientMap().getHumidity(pos_i)/100);
 			fog_range = MYMIN(fog_range, (draw_control.farthest_drawn+20)*BS);
 			fog_range *= 0.9;
 		}
@@ -3262,9 +3258,7 @@ void the_game(bool &kill, bool random_input, InputHandler *input,
 				<<", "<<(player_position.Y/BS)
 				<<", "<<(player_position.Z/BS)
 				<<") (yaw="<<(wrapDegrees_0_360(camera_yaw))
-				<<") (t="<<client.getEnv().getClientMap().getHeat(pos_i)
-				<<"C, h="<<client.getEnv().getClientMap().getHumidity(pos_i)
-				<<"%) (seed = "<<((u64)client.getMapSeed())
+				<<") (seed = "<<((u64)client.getMapSeed())
 				<<")";
 			guitext2->setText(narrow_to_wide(os.str()).c_str());
 			guitext2->setVisible(true);
diff --git a/src/map.cpp b/src/map.cpp
index 8f612aeac..de8e1107b 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -1100,7 +1100,6 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 	/*
 		Add neighboring liquid nodes and the node itself if it is
 		liquid (=water node was added) to transform queue.
-		note: todo: for liquid_finite enough to add only self node
 	*/
 	v3s16 dirs[7] = {
 		v3s16(0,0,0), // self
@@ -1292,7 +1291,6 @@ void Map::removeNodeAndUpdate(v3s16 p,
 	/*
 		Add neighboring liquid nodes and this node to transform queue.
 		(it's vital for the node itself to get updated last.)
-		note: todo: for liquid_finite enough to add only self node
 	*/
 	v3s16 dirs[7] = {
 		v3s16(0,0,1), // back
@@ -1619,7 +1617,6 @@ struct NodeNeighbor {
 	NeighborType t;
 	v3s16 p;
 	bool l; //can liquid
-	bool i; //infinity
 };
 
 void Map::transforming_liquid_add(v3s16 p) {
@@ -1630,383 +1627,8 @@ s32 Map::transforming_liquid_size() {
         return m_transforming_liquid.size();
 }
 
-const v3s16 g_7dirs[7] =
-{
-	// +right, +top, +back
-	v3s16( 0,-1, 0), // bottom
-	v3s16( 0, 0, 0), // self
-	v3s16( 0, 0, 1), // back
-	v3s16( 0, 0,-1), // front
-	v3s16( 1, 0, 0), // right
-	v3s16(-1, 0, 0), // left
-	v3s16( 0, 1, 0)  // top
-};
-
-#define D_BOTTOM 0
-#define D_TOP 6
-#define D_SELF 1
-
-void Map::transformLiquidsFinite(std::map<v3s16, MapBlock*> & modified_blocks)
-{
-	INodeDefManager *nodemgr = m_gamedef->ndef();
-
-	DSTACK(__FUNCTION_NAME);
-	//TimeTaker timer("transformLiquids()");
-
-	u32 loopcount = 0;
-	u32 initial_size = m_transforming_liquid.size();
-
-	u8 relax = g_settings->getS16("liquid_relax");
-	bool fast_flood = g_settings->getS16("liquid_fast_flood");
-	int water_level = g_settings->getS16("water_level");
-
-	// list of nodes that due to viscosity have not reached their max level height
-	UniqueQueue<v3s16> must_reflow, must_reflow_second;
-
-	// List of MapBlocks that will require a lighting update (due to lava)
-	std::map<v3s16, MapBlock*> lighting_modified_blocks;
-
-	u16 loop_max = g_settings->getU16("liquid_loop_max");
-
-	//if (m_transforming_liquid.size() > 0) errorstream << "Liquid queue size="<<m_transforming_liquid.size()<<std::endl;
-
-	while (m_transforming_liquid.size() > 0)
-	{
-		// This should be done here so that it is done when continue is used
-		if (loopcount >= initial_size || loopcount >= loop_max)
-			break;
-		loopcount++;
-		/*
-			Get a queued transforming liquid node
-		*/
-		v3s16 p0 = m_transforming_liquid.pop_front();
-		u16 total_level = 0;
-		// surrounding flowing liquid nodes
-		NodeNeighbor neighbors[7];
-		// current level of every block
-		s8 liquid_levels[7] = {-1, -1, -1, -1, -1, -1, -1};
-		 // target levels
-		s8 liquid_levels_want[7] = {-1, -1, -1, -1, -1, -1, -1};
-		s8 can_liquid_same_level = 0;
-		content_t liquid_kind = CONTENT_IGNORE;
-		content_t liquid_kind_flowing = CONTENT_IGNORE;
-		/*
-			Collect information about the environment
-		 */
-		const v3s16 *dirs = g_7dirs;
-		for (u16 i = 0; i < 7; i++) {
-			NeighborType nt = NEIGHBOR_SAME_LEVEL;
-			switch (i) {
-				case D_TOP:
-					nt = NEIGHBOR_UPPER;
-					break;
-				case D_BOTTOM:
-					nt = NEIGHBOR_LOWER;
-					break;
-			}
-			v3s16 npos = p0 + dirs[i];
-
-			neighbors[i].n = getNodeNoEx(npos);
-			neighbors[i].t = nt;
-			neighbors[i].p = npos;
-			neighbors[i].l = 0;
-			neighbors[i].i = 0;
-			NodeNeighbor & nb = neighbors[i];
-
-			switch (nodemgr->get(nb.n.getContent()).liquid_type) {
-				case LIQUID_NONE:
-					if (nb.n.getContent() == CONTENT_AIR) {
-						liquid_levels[i] = 0;
-						nb.l = 1;
-					}
-					break;
-				case LIQUID_SOURCE:
-					// if this node is not (yet) of a liquid type,
-					// choose the first liquid type we encounter
-					if (liquid_kind_flowing == CONTENT_IGNORE)
-						liquid_kind_flowing = nodemgr->getId(
-							nodemgr->get(nb.n).liquid_alternative_flowing);
-					if (liquid_kind == CONTENT_IGNORE)
-						liquid_kind = nb.n.getContent();
-					if (nb.n.getContent() == liquid_kind) {
-						liquid_levels[i] = nb.n.getLevel(nodemgr); //LIQUID_LEVEL_SOURCE;
-						nb.l = 1;
-						nb.i = (nb.n.param2 & LIQUID_INFINITY_MASK);
-					}
-					break;
-				case LIQUID_FLOWING:
-					// if this node is not (yet) of a liquid type,
-					// choose the first liquid type we encounter
-					if (liquid_kind_flowing == CONTENT_IGNORE)
-						liquid_kind_flowing = nb.n.getContent();
-					if (liquid_kind == CONTENT_IGNORE)
-						liquid_kind = nodemgr->getId(
-							nodemgr->get(nb.n).liquid_alternative_source);
-					if (nb.n.getContent() == liquid_kind_flowing) {
-						liquid_levels[i] = nb.n.getLevel(nodemgr); //(nb.n.param2 & LIQUID_LEVEL_MASK);
-						nb.l = 1;
-					}
-					break;
-			}
-			
-			if (nb.l && nb.t == NEIGHBOR_SAME_LEVEL)
-				++can_liquid_same_level;
-			if (liquid_levels[i] > 0)
-				total_level += liquid_levels[i];
-
-			/*
-			infostream << "get node i=" <<(int)i<<" " << PP(npos) << " c="
-			<< nb.n.getContent() <<" p0="<< (int)nb.n.param0 <<" p1="
-			<< (int)nb.n.param1 <<" p2="<< (int)nb.n.param2 << " lt="
-			<< nodemgr->get(nb.n.getContent()).liquid_type
-			//<< " lk=" << liquid_kind << " lkf=" << liquid_kind_flowing
-			<< " l="<< nb.l	<< " inf="<< nb.i << " nlevel=" << (int)liquid_levels[i]
-			<< " tlevel=" << (int)total_level << " cansame="
-			<< (int)can_liquid_same_level << std::endl;
-			*/
-		}
-
-		if (liquid_kind == CONTENT_IGNORE ||
-			!neighbors[D_SELF].l ||
-			total_level <= 0)
-			continue;
-
-		// fill bottom block
-		if (neighbors[D_BOTTOM].l) {
-			liquid_levels_want[D_BOTTOM] = total_level > LIQUID_LEVEL_SOURCE ?
-				LIQUID_LEVEL_SOURCE : total_level;
-			total_level -= liquid_levels_want[D_BOTTOM];
-		}
-
-		//relax up
-		if (relax && ((p0.Y == water_level) || (fast_flood && p0.Y <= water_level)) && liquid_levels[D_TOP] == 0 &&
-			liquid_levels[D_BOTTOM] == LIQUID_LEVEL_SOURCE &&
-			total_level >= LIQUID_LEVEL_SOURCE * can_liquid_same_level-
-			(can_liquid_same_level - relax) &&
-			can_liquid_same_level >= relax + 1) {
-			total_level = LIQUID_LEVEL_SOURCE * can_liquid_same_level;
-		}
-
-		// prevent lakes in air above unloaded blocks
-		if (liquid_levels[D_TOP] == 0 && (p0.Y > water_level) && neighbors[D_BOTTOM].n.getContent() == CONTENT_IGNORE && !(loopcount % 3)) {
-			--total_level;
-		}
-
-		// calculate self level 5 blocks
-		u8 want_level =
-			  total_level >= LIQUID_LEVEL_SOURCE * can_liquid_same_level
-			? LIQUID_LEVEL_SOURCE
-			: total_level / can_liquid_same_level;
-		total_level -= want_level * can_liquid_same_level;
-
-		//relax down
-		if (relax && p0.Y == water_level + 1 && liquid_levels[D_TOP] == 0 &&
-			liquid_levels[D_BOTTOM] == LIQUID_LEVEL_SOURCE && want_level == 0 &&
-			total_level <= (can_liquid_same_level - relax) &&
-			can_liquid_same_level >= relax + 1) {
-			total_level = 0;
-		}
-
-		for (u16 ii = D_SELF; ii < D_TOP; ++ii) { // fill only same level
-			if (!neighbors[ii].l)
-				continue;
-			liquid_levels_want[ii] = want_level;
-			if (liquid_levels_want[ii] < LIQUID_LEVEL_SOURCE && total_level > 0) {
-				if (loopcount % 3 || liquid_levels[ii] <= 0){
-					if (liquid_levels[ii] > liquid_levels_want[ii]) {
-						++liquid_levels_want[ii];
-						--total_level;
-					}
-				} else if (neighbors[ii].l > 0){
-						++liquid_levels_want[ii];
-						--total_level;
-				}
-			}
-		}
-
-		for (u16 ii = 0; ii < 7; ++ii) {
-			if (total_level < 1) break;
-			if (liquid_levels_want[ii] >= 0 &&
-				liquid_levels_want[ii] < LIQUID_LEVEL_SOURCE) {
-				++liquid_levels_want[ii];
-				--total_level;
-			}
-		}
-
-		// fill top block if can
-		if (neighbors[D_TOP].l) {
-			liquid_levels_want[D_TOP] = total_level > LIQUID_LEVEL_SOURCE ?
-				LIQUID_LEVEL_SOURCE : total_level;
-			total_level -= liquid_levels_want[D_TOP];
-		}
-
-		for (u16 ii = 0; ii < 7; ii++) // infinity and cave flood optimization
-			if (    neighbors[ii].i ||
-				(liquid_levels_want[ii] >= 0 &&
-				 (fast_flood && p0.Y < water_level &&
-				  (initial_size >= 1000
-				   && ii != D_TOP
-				   && want_level >= LIQUID_LEVEL_SOURCE/4
-				   && can_liquid_same_level >= 5
-				   && liquid_levels[D_TOP] >= LIQUID_LEVEL_SOURCE))))
-				liquid_levels_want[ii] = LIQUID_LEVEL_SOURCE;
-
-		/*
-		if (total_level > 0) //|| flowed != volume)
-			infostream <<" AFTER level=" << (int)total_level
-			//<< " flowed="<<flowed<< " volume=" << volume
-			<< " wantsame="<<(int)want_level<< " top="
-			<< (int)liquid_levels_want[D_TOP]<< " topwas="
-			<< (int)liquid_levels[D_TOP]<< " bot="
-			<< (int)liquid_levels_want[D_BOTTOM]<<std::endl;
-		*/
-
-		//u8 changed = 0;
-		for (u16 i = 0; i < 7; i++) {
-			if (liquid_levels_want[i] < 0 || !neighbors[i].l)
-				continue;
-			MapNode & n0 = neighbors[i].n;
-			p0 = neighbors[i].p;
-			/*
-				decide on the type (and possibly level) of the current node
-			*/
-			content_t new_node_content;
-			s8 new_node_level = -1;
-			u8 viscosity = nodemgr->get(liquid_kind).liquid_viscosity;
-			if (viscosity > 1 && liquid_levels_want[i] != liquid_levels[i]) {
-				// amount to gain, limited by viscosity
-				// must be at least 1 in absolute value
-				s8 level_inc = liquid_levels_want[i] - liquid_levels[i];
-				if (level_inc < -viscosity || level_inc > viscosity)
-					new_node_level = liquid_levels[i] + level_inc/viscosity;
-				else if (level_inc < 0)
-					new_node_level = liquid_levels[i] - 1;
-				else if (level_inc > 0)
-					new_node_level = liquid_levels[i] + 1;
-			} else {
-				new_node_level = liquid_levels_want[i];
-			}
-			
-			if (new_node_level >= LIQUID_LEVEL_SOURCE)
-				new_node_content = liquid_kind;
-			else if (new_node_level > 0)
-				new_node_content = liquid_kind_flowing;
-			else
-				new_node_content = CONTENT_AIR;
-			
-			// last level must flow down on stairs
-			if (liquid_levels_want[i] != liquid_levels[i] &&
-				liquid_levels[D_TOP] <= 0 && !neighbors[D_BOTTOM].l &&
-				new_node_level >= 1 && new_node_level <= 2) {
-				for (u16 ii = D_SELF + 1; ii < D_TOP; ++ii) { // only same level
-					if (neighbors[ii].l)
-						must_reflow_second.push_back(p0 + dirs[ii]);
-				}
-			}
-
-			/*
-				check if anything has changed.
-				if not, just continue with the next node.
-			 */
-			/*
-			if (
-				 new_node_content == n0.getContent()
-				&& (nodemgr->get(n0.getContent()).liquid_type != LIQUID_FLOWING ||
-				 (n0.getLevel(nodemgr) == (u8)new_node_level
-				 //&& ((n0.param2 & LIQUID_FLOW_DOWN_MASK) ==
-				 //LIQUID_FLOW_DOWN_MASK) == flowing_down
-				 ))
-				&&
-				 (nodemgr->get(n0.getContent()).liquid_type != LIQUID_SOURCE ||
-				 (((n0.param2 & LIQUID_INFINITY_MASK) ==
-					LIQUID_INFINITY_MASK) == neighbors[i].i
-				 ))
-			   )*/
-			if (liquid_levels[i] == new_node_level)
-			{
-				continue;
-			}
-			
-			//++changed;
-
-			/*
-				update the current node
-			 */
-			/*
-			if (nodemgr->get(new_node_content).liquid_type == LIQUID_FLOWING) {
-				// set level to last 3 bits, flowing down bit to 4th bit
-				n0.param2 = (new_node_level & LIQUID_LEVEL_MASK);
-			} else if (nodemgr->get(new_node_content).liquid_type == LIQUID_SOURCE) {
-				//n0.param2 = ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
-				n0.param2 = (neighbors[i].i ? LIQUID_INFINITY_MASK : 0x00);
-			}
-			*/
-			/*
-			infostream << "set node i=" <<(int)i<<" "<< PP(p0)<< " nc="
-			<<new_node_content<< " p2="<<(int)n0.param2<< " nl="
-			<<(int)new_node_level<<std::endl;
-			*/
-			
-			n0.setContent(liquid_kind_flowing);
-			n0.setLevel(nodemgr, new_node_level);
-			// Find out whether there is a suspect for this action
-			std::string suspect;
-			if(m_gamedef->rollback()){
-				suspect = m_gamedef->rollback()->getSuspect(p0, 83, 1);
-			}
-
-			if(!suspect.empty()){
-				// Blame suspect
-				RollbackScopeActor rollback_scope(m_gamedef->rollback(), suspect, true);
-				// Get old node for rollback
-				RollbackNode rollback_oldnode(this, p0, m_gamedef);
-				// Set node
-				setNode(p0, n0);
-				// Report
-				RollbackNode rollback_newnode(this, p0, m_gamedef);
-				RollbackAction action;
-				action.setSetNode(p0, rollback_oldnode, rollback_newnode);
-				m_gamedef->rollback()->reportAction(action);
-			} else {
-				// Set node
-				setNode(p0, n0);
-			}
-
-			v3s16 blockpos = getNodeBlockPos(p0);
-			MapBlock *block = getBlockNoCreateNoEx(blockpos);
-			if(block != NULL) {
-				modified_blocks[blockpos] = block;
-				// If node emits light, MapBlock requires lighting update
-				if(nodemgr->get(n0).light_source != 0)
-					lighting_modified_blocks[block->getPos()] = block;
-			}
-			must_reflow.push_back(neighbors[i].p);
-		}
-		/* //for better relax  only same level
-		if (changed)  for (u16 ii = D_SELF + 1; ii < D_TOP; ++ii) {
-			if (!neighbors[ii].l) continue;
-			must_reflow.push_back(p0 + dirs[ii]);
-		}*/
-	}
-	/*
-	if (loopcount)
-		infostream<<"Map::transformLiquids(): loopcount="<<loopcount
-		<<" reflow="<<must_reflow.size()
-		<<" queue="<< m_transforming_liquid.size()<<std::endl;
-	*/
-	while (must_reflow.size() > 0)
-		m_transforming_liquid.push_back(must_reflow.pop_front());
-	while (must_reflow_second.size() > 0)
-		m_transforming_liquid.push_back(must_reflow_second.pop_front());
-	updateLighting(lighting_modified_blocks, modified_blocks);
-}
-
 void Map::transformLiquids(std::map<v3s16, MapBlock*> & modified_blocks)
 {
-
-	if (g_settings->getBool("liquid_finite"))
-		return Map::transformLiquidsFinite(modified_blocks);
-
 	INodeDefManager *nodemgr = m_gamedef->ndef();
 
 	DSTACK(__FUNCTION_NAME);
@@ -2385,26 +2007,6 @@ void Map::removeNodeTimer(v3s16 p)
 	block->m_node_timers.remove(p_rel);
 }
 
-s16 Map::getHeat(v3s16 p)
-{
-	MapBlock *block = getBlockNoCreateNoEx(getNodeBlockPos(p));
-	if(block != NULL) {
-		return block->heat;
-	}
-	//errorstream << "No heat for " << p.X<<"," << p.Z << std::endl;
-	return 0;
-}
-
-s16 Map::getHumidity(v3s16 p)
-{
-	MapBlock *block = getBlockNoCreateNoEx(getNodeBlockPos(p));
-	if(block != NULL) {
-		return block->humidity;
-	}
-	//errorstream << "No humidity for " << p.X<<"," << p.Z << std::endl;
-	return 0;
-}
-
 /*
 	ServerMap
 */
@@ -2818,29 +2420,6 @@ MapBlock* ServerMap::finishBlockMake(BlockMakeData *data,
 			<<","<<blockpos_requested.Y<<","
 			<<blockpos_requested.Z<<")"<<std::endl;*/
 			
-	/*
-		Update weather data in blocks
-	*/
-	ServerEnvironment *senv = &((Server *)m_gamedef)->getEnv();
-	for(s16 x=blockpos_min.X-extra_borders.X;
-		x<=blockpos_max.X+extra_borders.X; x++)
-	for(s16 z=blockpos_min.Z-extra_borders.Z;
-		z<=blockpos_max.Z+extra_borders.Z; z++)
-	for(s16 y=blockpos_min.Y-extra_borders.Y;
-		y<=blockpos_max.Y+extra_borders.Y; y++)
-	{
-		v3s16 p(x, y, z);
-		MapBlock *block = getBlockNoCreateNoEx(p);
-		block->heat_last_update     = 0;
-		block->humidity_last_update = 0;
-		if (senv->m_use_weather) {
-			updateBlockHeat(senv, p * MAP_BLOCKSIZE, block);
-			updateBlockHumidity(senv, p * MAP_BLOCKSIZE, block);
-		} else {
-			block->heat     = HEAT_UNDEFINED;
-			block->humidity = HUMIDITY_UNDEFINED;
-		}
-	}
 	
 #if 0
 	if(enable_mapgen_debug_info)
@@ -3176,18 +2755,6 @@ MapBlock *ServerMap::getBlockOrEmerge(v3s16 p3d)
 
 void ServerMap::prepareBlock(MapBlock *block) {
 	ServerEnvironment *senv = &((Server *)m_gamedef)->getEnv();
-
-	// Calculate weather conditions
-	block->heat_last_update     = 0;
-	block->humidity_last_update = 0;
-	if (senv->m_use_weather) {
-		v3s16 p = block->getPos() *  MAP_BLOCKSIZE;
-		updateBlockHeat(senv, p, block);
-		updateBlockHumidity(senv, p, block);
-	} else {
-		block->heat     = HEAT_UNDEFINED;
-		block->humidity = HUMIDITY_UNDEFINED;
-	}
 }
 
 s16 ServerMap::findGroundLevel(v2s16 p2d)
@@ -3917,48 +3484,6 @@ void ServerMap::PrintInfo(std::ostream &out)
 	out<<"ServerMap: ";
 }
 
-s16 ServerMap::updateBlockHeat(ServerEnvironment *env, v3s16 p, MapBlock *block)
-{
-	u32 gametime = env->getGameTime();
-	
-	if (block) {
-		if (gametime - block->heat_last_update < 10)
-			return block->heat;
-	} else {
-		block = getBlockNoCreateNoEx(getNodeBlockPos(p));
-	}
-
-	f32 heat = m_emerge->biomedef->calcBlockHeat(p, getSeed(),
-			env->getTimeOfDayF(), gametime * env->getTimeOfDaySpeed());
-
-	if(block) {
-		block->heat = heat;
-		block->heat_last_update = gametime;
-	}
-	return heat;
-}
-
-s16 ServerMap::updateBlockHumidity(ServerEnvironment *env, v3s16 p, MapBlock *block)
-{
-	u32 gametime = env->getGameTime();
-	
-	if (block) {
-		if (gametime - block->humidity_last_update < 10)
-			return block->humidity;
-	} else {
-		block = getBlockNoCreateNoEx(getNodeBlockPos(p));
-	}
-
-	f32 humidity = m_emerge->biomedef->calcBlockHumidity(p, getSeed(),
-			env->getTimeOfDayF(), gametime * env->getTimeOfDaySpeed());
-			
-	if(block) {
-		block->humidity = humidity;
-		block->humidity_last_update = gametime;
-	}
-	return humidity;
-}
-
 /*
 	MapVoxelManipulator
 */
diff --git a/src/map.h b/src/map.h
index 191cf5f94..c2725d3d6 100644
--- a/src/map.h
+++ b/src/map.h
@@ -304,7 +304,6 @@ public:
 	virtual void PrintInfo(std::ostream &out);
 
 	void transformLiquids(std::map<v3s16, MapBlock*> & modified_blocks);
-	void transformLiquidsFinite(std::map<v3s16, MapBlock*> & modified_blocks);
 
 	/*
 		Node metadata
@@ -351,9 +350,6 @@ public:
 	void transforming_liquid_add(v3s16 p);
 	s32 transforming_liquid_size();
 
-	virtual s16 getHeat(v3s16 p);
-	virtual s16 getHumidity(v3s16 p);
-
 protected:
 	friend class LuaVoxelManip;
 
@@ -504,9 +500,6 @@ public:
 	u64 getSeed();
 	s16 getWaterLevel();
 
-	virtual s16 updateBlockHeat(ServerEnvironment *env, v3s16 p, MapBlock *block = NULL);
-	virtual s16 updateBlockHumidity(ServerEnvironment *env, v3s16 p, MapBlock *block = NULL);
-
 private:
 	// Emerge manager
 	EmergeManager *m_emerge;
diff --git a/src/mapblock.cpp b/src/mapblock.cpp
index eafb956d5..95e54fb33 100644
--- a/src/mapblock.cpp
+++ b/src/mapblock.cpp
@@ -43,10 +43,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 MapBlock::MapBlock(Map *parent, v3s16 pos, IGameDef *gamedef, bool dummy):
-		heat(0),
-		humidity(0),
-		heat_last_update(0),
-		humidity_last_update(0),
 		m_parent(parent),
 		m_pos(pos),
 		m_gamedef(gamedef),
@@ -647,8 +643,8 @@ void MapBlock::serializeNetworkSpecific(std::ostream &os, u16 net_proto_version)
 	if(net_proto_version >= 21){
 		int version = 1;
 		writeU8(os, version);
-		writeF1000(os, heat);
-		writeF1000(os, humidity);
+		writeF1000(os, 0); // deprecated heat
+		writeF1000(os, 0); // deprecated humidity
 	}
 }
 
@@ -764,8 +760,8 @@ void MapBlock::deSerializeNetworkSpecific(std::istream &is)
 		//if(version != 1)
 		//	throw SerializationError("unsupported MapBlock version");
 		if(version >= 1) {
-			heat = readF1000(is);
-			humidity = readF1000(is);
+			readF1000(is); // deprecated heat
+			readF1000(is); // deprecated humidity
 		}
 	}
 	catch(SerializationError &e)
diff --git a/src/mapblock.h b/src/mapblock.h
index 501ab75da..3879c5b0e 100644
--- a/src/mapblock.h
+++ b/src/mapblock.h
@@ -513,11 +513,6 @@ public:
 	NodeMetadataList m_node_metadata;
 	NodeTimerList m_node_timers;
 	StaticObjectList m_static_objects;
-	
-	s16 heat;
-	s16 humidity;
-	u32 heat_last_update;
-	u32 humidity_last_update;
 
 private:
 	/*
diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index a7e9d2e04..5e393901a 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -979,8 +979,6 @@ void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
 void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax) {
 	bool isliquid, wasliquid, rare;
 	v3s16 em  = vm->m_area.getExtent();
-	rare = g_settings->getBool("liquid_finite");
-	int rarecnt = 0;
 
 	for (s16 z = nmin.Z; z <= nmax.Z; z++) {
 		for (s16 x = nmin.X; x <= nmax.X; x++) {
@@ -990,8 +988,8 @@ void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nm
 			for (s16 y = nmax.Y; y >= nmin.Y; y--) {
 				isliquid = ndef->get(vm->m_data[i]).isLiquid();
 
-				// there was a change between liquid and nonliquid, add to queue. no need to add every with liquid_finite
-				if (isliquid != wasliquid && (!rare || !(rarecnt++ % 36)))
+				// there was a change between liquid and nonliquid, add to queue.
+				if (isliquid != wasliquid)
 					trans_liquid->push_back(v3s16(x, y, z));
 
 				wasliquid = isliquid;
diff --git a/src/script/lua_api/l_env.cpp b/src/script/lua_api/l_env.cpp
index 6447866cd..37fa167e6 100644
--- a/src/script/lua_api/l_env.cpp
+++ b/src/script/lua_api/l_env.cpp
@@ -765,7 +765,6 @@ int ModApiEnvMod::l_spawn_tree(lua_State *L)
 	return 1;
 }
 
-
 // minetest.transforming_liquid_add(pos)
 int ModApiEnvMod::l_transforming_liquid_add(lua_State *L)
 {
@@ -776,28 +775,6 @@ int ModApiEnvMod::l_transforming_liquid_add(lua_State *L)
 	return 1;
 }
 
-// minetest.get_heat(pos)
-// pos = {x=num, y=num, z=num}
-int ModApiEnvMod::l_get_heat(lua_State *L)
-{
-	GET_ENV_PTR;
-
-	v3s16 pos = read_v3s16(L, 1);
-	lua_pushnumber(L, env->getServerMap().updateBlockHeat(env, pos));
-	return 1;
-}
-
-// minetest.get_humidity(pos)
-// pos = {x=num, y=num, z=num}
-int ModApiEnvMod::l_get_humidity(lua_State *L)
-{
-	GET_ENV_PTR;
-
-	v3s16 pos = read_v3s16(L, 1);
-	lua_pushnumber(L, env->getServerMap().updateBlockHumidity(env, pos));
-	return 1;
-}
-
 // minetest.forceload_block(blockpos)
 // blockpos = {x=num, y=num, z=num}
 int ModApiEnvMod::l_forceload_block(lua_State *L)
@@ -855,8 +832,6 @@ void ModApiEnvMod::Initialize(lua_State *L, int top)
 	API_FCT(find_path);
 	API_FCT(line_of_sight);
 	API_FCT(transforming_liquid_add);
-	API_FCT(get_heat);
-	API_FCT(get_humidity);
 	API_FCT(forceload_block);
 	API_FCT(forceload_free_block);
 }
diff --git a/src/script/lua_api/l_env.h b/src/script/lua_api/l_env.h
index 7e1cabe3f..8bf599b0c 100644
--- a/src/script/lua_api/l_env.h
+++ b/src/script/lua_api/l_env.h
@@ -148,9 +148,6 @@ private:
 	// minetest.transforming_liquid_add(pos)
 	static int l_transforming_liquid_add(lua_State *L);
 
-	static int l_get_heat(lua_State *L);
-	static int l_get_humidity(lua_State *L);
-	
 	// minetest.forceload_block(blockpos)
 	// forceloads a block
 	static int l_forceload_block(lua_State *L);
diff --git a/src/serverlist.cpp b/src/serverlist.cpp
index 64511b5b0..10ec5771f 100644
--- a/src/serverlist.cpp
+++ b/src/serverlist.cpp
@@ -218,7 +218,6 @@ void sendAnnounce(std::string action, const std::vector<std::string> & clients_n
 		server["dedicated"]	= g_settings->get("server_dedicated");
 		server["privs"]		= g_settings->get("default_privs");
 		server["rollback"]	= g_settings->getBool("enable_rollback_recording");
-		server["liquid_finite"]	= g_settings->getBool("liquid_finite");
 		server["mapgen"]	= g_settings->get("mg_name");
 		server["can_see_far_names"]	= g_settings->getBool("unlimited_player_transfer_distance");
 		server["mods"]		= Json::Value(Json::arrayValue);