The new mapgen, noise functions, et al.

2012-11-25 21:16:48 -05:00 · 2012-11-25 21:16:48 -05:00 · 11afcbff69
parent 736b386554
commit 11afcbff69
23 changed files with 1892 additions and 1037 deletions
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@ -218,6 +218,7 @@ set(common_SRCS
 	sha1.cpp
 	base64.cpp
 	ban.cpp
+	biome.cpp
 	clientserver.cpp
 	staticobject.cpp
 	util/serialize.cpp
--- a/src/biome.cpp
+++ b/src/biome.cpp
@ -0,0 +1,229 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2011 kwolekr, Ryan Kwolek <kwolekr2@cs.scranton.edu>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "biome.h"
+#include "nodedef.h"
+#include "map.h" //for ManualMapVoxelManipulator
+#include "main.h"
+
+#define BT_NONE			0
+#define BT_OCEAN		1
+#define BT_LAKE			2
+#define BT_SBEACH		3
+#define BT_GBEACH		4
+#define BT_PLAINS		5
+#define BT_HILLS		6
+#define BT_EXTREMEHILLS 7
+#define BT_MOUNTAINS	8
+#define BT_DESERT		9
+#define BT_DESERTHILLS	10
+#define BT_HELL			11
+#define BT_AETHER		12
+
+#define BT_BTMASK		0x3F
+
+#define BTF_SNOW		0x40
+#define BTF_FOREST		0x80
+
+#define BGFREQ_1 (           0.40)
+#define BGFREQ_2 (BGFREQ_1 + 0.05)
+#define BGFREQ_3 (BGFREQ_2 + 0.08)
+#define BGFREQ_4 (BGFREQ_3 + 0.35)
+#define BGFREQ_5 (BGFREQ_4 + 0.18)
+//BGFREQ_5 is not checked as an upper bound; it ought to sum up to 1.00, but it's okay if it doesn't.
+
+
+/*float bg1_temps[] = {0.0};
+int bg1_biomes[]  = {BT_OCEAN};
+
+float bg2_temps[] = {10.0};
+int bg2_biomes[]  = {BT_GBEACH, BT_SBEACH};
+
+float bg3_temps[] = {30.0, 40.0};
+int bg3_biomes[]  = {BT_HILLS, BT_EXTREMEHILLS, BT_MOUNTAINS};
+
+float bg4_temps[] = {25.0, 30.0, 35.0, 40.0};
+int bg4_biomes[]  = {BT_HILLS, BT_EXTREMEHILLS, BT_MOUNTAINS, BT_DESERT, BT_DESERTHILLS};
+
+float bg5_temps[] = {5.0, 40.0};
+int bg5_biomes[]  = {BT_LAKE, BT_PLAINS, BT_DESERT};*/
+
+
+BiomeDefManager::BiomeDefManager(IGameDef *gamedef) {
+	this->m_gamedef = gamedef;
+	this->ndef      = gamedef->ndef();
+
+	//addDefaultBiomes(); //can't do this in the ctor, too early
+}
+
+
+BiomeDefManager::~BiomeDefManager() {
+	for (int i = 0; i != bgroups.size(); i++)
+		delete bgroups[i];
+}
+
+
+void BiomeDefManager::addBiome() {
+
+}
+
+
+NoiseParams npmtdef = {0.0, 20.0, v3f(250., 250., 250.), 82341, 5, 0.6};
+
+void BiomeDefManager::addDefaultBiomes() {
+	std::vector<Biome *> *bgroup;
+	Biome *b;
+
+	//bgroup = new std::vector<Biome *>;
+
+	b = new Biome;
+	b->name         = "Default";
+	b->n_top        = MapNode(ndef->getId("mapgen_stone"));
+	b->n_filler     = b->n_top;
+	b->ntopnodes    = 0;
+	b->height_min   = -MAP_GENERATION_LIMIT;
+	b->height_max   = MAP_GENERATION_LIMIT;
+	b->heat_min     = FLT_MIN;
+	b->heat_max     = FLT_MAX;
+	b->humidity_min = FLT_MIN;
+	b->humidity_max = FLT_MAX;
+	b->np = &npmtdef;
+	biome_default = b;
+
+	//bgroup->push_back(b);
+	//bgroups.push_back(bgroup);
+}
+
+
+Biome *BiomeDefManager::getBiome(float bgfreq, float heat, float humidity) {
+	std::vector<Biome *> bgroup;
+	Biome *b;
+	int i;
+
+	int ngroups = bgroup_freqs.size();
+	if (!ngroups)
+		return biome_default;
+	for (i = 0; (i != ngroups - 1) && (bgfreq > bgroup_freqs[i]); i++);
+	bgroup = *(bgroups[i]);
+
+	int nbiomes = bgroup.size();
+	if (!nbiomes)
+		return biome_default;
+	for (i = 0; i != nbiomes - 1; i++) {
+		b = bgroup[i];
+		if (heat >= b->heat_min && heat <= b->heat_max &&
+			humidity >= b->humidity_min && humidity <= b->humidity_max)
+			return b;
+	}
+
+	return biome_default;
+}
+
+
+//////////////////////////// [ Generic biome ] ////////////////////////////////
+
+
+int Biome::getSurfaceHeight(float noise_terrain) {
+	return np->offset + np->scale * noise_terrain;
+}
+
+
+void Biome::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
+	//printf("(%d, %d): %f\n", x, z, mg->map_terrain[z * mg->ystride + x]);
+
+	//int surfaceh = 4;
+	int surfaceh = np->offset + np->scale * mg->map_terrain[(z - mg->node_min.Z) * 80 /*THIS IS TEMPORARY mg->ystride*/ + (x - mg->node_min.X)];
+	//printf("gen column %f\n", );
+	int y = y1;
+	int i = mg->vmanip->m_area.index(x, y, z);  //z * mg->zstride + x + (y - mg->vmanip->m_area.MinEdge.Y) * mg->ystride;
+	for (; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = n_filler;
+	for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = n_top;
+	for (; y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = mg->n_air;
+}
+
+
+
+///////////////////////////// [ Ocean biome ] /////////////////////////////////
+
+
+
+void BiomeOcean::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
+	int y, i = 0;
+
+	int surfaceh = np->offset + np->scale * mg->map_terrain[z * mg->ystride + x];
+
+	i = z * mg->zstride + x;
+	for (y = y1; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = n_filler;
+	for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = n_top;
+	for (; y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = mg->n_air;
+}
+
+
+///////////////////////////// [ Nether biome ] /////////////////////////////////
+
+
+int BiomeHell::getSurfaceHeight(float noise_terrain) {
+	return np->offset + np->scale * noise_terrain;
+}
+
+
+void BiomeHell::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
+	int y, i = 0;
+
+	int surfaceh = np->offset + np->scale * mg->map_terrain[z * mg->ystride + x];
+
+	i = z * mg->zstride + x;
+	for (y = y1; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = n_filler;
+	for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = n_top;
+	for (; y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = mg->n_air;
+}
+
+
+///////////////////////////// [ Aether biome ] ////////////////////////////////
+
+/////////////////////////// [ Superflat biome ] ///////////////////////////////
+
+
+int BiomeSuperflat::getSurfaceHeight(float noise_terrain) {
+	return ntopnodes;
+}
+
+
+void BiomeSuperflat::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
+	int y, i = 0;
+
+	int surfaceh = ntopnodes;
+
+	i = z * mg->zstride + x;
+	for (y = y1; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = n_filler;
+	for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = n_top;
+	for (; y <= y2; y++, i += mg->ystride)
+		mg->vmanip->m_data[i] = mg->n_air;
+}
--- a/src/biome.h
+++ b/src/biome.h
@ -0,0 +1,79 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2011 kwolekr, Ryan Kwolek <kwolekr2@cs.scranton.edu>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef BIOME_HEADER
+#define BIOME_HEADER
+
+#include "nodedef.h"
+#include "gamedef.h"
+#include "mapnode.h"
+#include "noise.h"
+#include "mapgen.h"
+
+class Biome {
+public:
+	MapNode n_top;
+	MapNode n_filler;
+	s16 ntopnodes;
+	s16 flags;
+	s16 height_min;
+	s16 height_max;
+	float heat_min;
+	float heat_max;
+	float humidity_min;
+	float humidity_max;
+	const char *name;
+	NoiseParams *np;
+
+	virtual void genColumn(Mapgen *mg, int x, int z, int y1, int y2);
+	virtual int getSurfaceHeight(float noise_terrain);
+};
+
+class BiomeOcean : public Biome {
+	virtual void genColumn(Mapgen *mg, int x, int z, int y1, int y2);
+};
+
+class BiomeHell : public Biome {
+	virtual void genColumn(Mapgen *mg, int x, int z, int y1, int y2);
+	virtual int getSurfaceHeight(float noise_terrain);
+};
+
+class BiomeSuperflat : public Biome {
+	virtual void genColumn(Mapgen *mg, int x, int z, int y1, int y2);
+	virtual int getSurfaceHeight(float noise_terrain);
+};
+
+class BiomeDefManager {
+public:
+	std::vector<float> bgroup_freqs;
+	std::vector<std::vector<Biome *> *> bgroups;
+	Biome *biome_default;
+	IGameDef *m_gamedef;
+	INodeDefManager *ndef;
+
+	BiomeDefManager(IGameDef *gamedef);
+	~BiomeDefManager();
+
+	Biome *getBiome(float bgfreq, float heat, float humidity);
+
+	void addBiome();
+	void addDefaultBiomes();
+};
+
+#endif
--- a/src/defaultsettings.cpp
+++ b/src/defaultsettings.cpp
@ -163,7 +163,7 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("max_block_generate_distance", "7");
 	settings->setDefault("time_send_interval", "5");
 	settings->setDefault("time_speed", "72");
-	settings->setDefault("water_level", "1");
+	settings->setDefault("default_water_level", "1");
 	settings->setDefault("server_unload_unused_data_timeout", "29");
 	settings->setDefault("server_map_save_interval", "5.3");
 	settings->setDefault("full_block_send_enable_min_time_from_building", "2.0");
--- a/src/environment.cpp
+++ b/src/environment.cpp
@ -1301,6 +1301,7 @@ u16 ServerEnvironment::addActiveObject(ServerActiveObject *object)
 	return id;
 }

+#if 0
 bool ServerEnvironment::addActiveObjectAsStatic(ServerActiveObject *obj)
 {
 	assert(obj);
@ -1343,6 +1344,7 @@ bool ServerEnvironment::addActiveObjectAsStatic(ServerActiveObject *obj)

 	return succeeded;
 }
+#endif

 /*
 	Finds out what new objects have been added to
@ -1563,13 +1565,15 @@ void ServerEnvironment::removeRemovedObjects()
 		*/
 		if(obj->m_static_exists && obj->m_removed)
 		{
-			MapBlock *block = m_map->emergeBlock(obj->m_static_block);
-			if(block)
-			{
+			MapBlock *block = m_map->emergeBlock(obj->m_static_block, false);
+			if (block) {
 				block->m_static_objects.remove(id);
 				block->raiseModified(MOD_STATE_WRITE_NEEDED,
 						"removeRemovedObjects");
 				obj->m_static_exists = false;
+			} else {
+				infostream << "failed to emerge block from which "
+					"an object to be removed was loaded from. id="<<id<<std::endl;
 			}
 		}

@ -1717,6 +1721,8 @@ void ServerEnvironment::activateObjects(MapBlock *block, u32 dtime_s)

 	If force_delete is set, active object is deleted nevertheless. It
 	shall only be set so in the destructor of the environment.
+
+	If block wasn't generated (not in memory or on disk), 
 */
 void ServerEnvironment::deactivateFarObjects(bool force_delete)
 {
--- a/src/environment.h
+++ b/src/environment.h
@ -241,8 +241,9 @@ public:
 		MapBlock.
 		Caller allocates memory, ServerEnvironment frees memory.
 		Return value: true if succeeded, false if failed.
+		(note:  not used, pending removal from engine)
 	*/
-	bool addActiveObjectAsStatic(ServerActiveObject *object);
+	//bool addActiveObjectAsStatic(ServerActiveObject *object);
 	
 	/*
 		Find out what new objects have been added to
--- a/src/farmesh.cpp
+++ b/src/farmesh.cpp
@ -120,14 +120,14 @@ HeightPoint ground_height(u64 seed, v2s16 p2d)
 	if(n)
 		return n->getValue();
 	HeightPoint hp;
-	s16 level = mapgen::find_ground_level_from_noise(seed, p2d, 3);
+	s16 level = Mapgen::find_ground_level_from_noise(seed, p2d, 3);
 	hp.gh = (level-4)*BS;
 	hp.ma = (4)*BS;
 	/*hp.gh = BS*base_rock_level_2d(seed, p2d);
 	hp.ma = BS*get_mud_add_amount(seed, p2d);*/
-	hp.have_sand = mapgen::get_have_beach(seed, p2d);
+	hp.have_sand = Mapgen::get_have_beach(seed, p2d);
 	if(hp.gh > BS*WATER_LEVEL)
-		hp.tree_amount = mapgen::tree_amount_2d(seed, p2d);
+		hp.tree_amount = Mapgen::tree_amount_2d(seed, p2d);
 	else
 		hp.tree_amount = 0;
 	// No mud has been added if mud amount is less than 1
--- a/src/guiPauseMenu.cpp
+++ b/src/guiPauseMenu.cpp
@ -1,253 +1,253 @@
-/*
-Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public License along
-with this program; if not, write to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-
-#include "guiPauseMenu.h"
-#include "debug.h"
-#include "serialization.h"
-#include "porting.h"
-#include "config.h"
-#include "main.h"
-#include <IGUICheckBox.h>
-#include <IGUIEditBox.h>
-#include <IGUIButton.h>
-#include <IGUIStaticText.h>
-#include <IGUIFont.h>
-#include "gettext.h"
-#include "util/string.h"
-
-GUIPauseMenu::GUIPauseMenu(gui::IGUIEnvironment* env,
-		gui::IGUIElement* parent, s32 id,
-		IGameCallback *gamecallback,
-		IMenuManager *menumgr,
-		bool simple_singleplayer_mode):
-	GUIModalMenu(env, parent, id, menumgr),
-	m_gamecallback(gamecallback),
-	m_simple_singleplayer_mode(simple_singleplayer_mode)
-{
-}
-
-GUIPauseMenu::~GUIPauseMenu()
-{
-	removeChildren();
-}
-
-void GUIPauseMenu::removeChildren()
-{
-	{
-		gui::IGUIElement *e = getElementFromId(256);
-		if(e != NULL)
-			e->remove();
-	}
-	{
-		gui::IGUIElement *e = getElementFromId(257);
-		if(e != NULL)
-			e->remove();
-	}
-	{
-		gui::IGUIElement *e = getElementFromId(258);
-		if(e != NULL)
-			e->remove();
-	}
-	{
-		gui::IGUIElement *e = getElementFromId(259);
-		if(e != NULL)
-			e->remove();
-	}
-	{
-		gui::IGUIElement *e = getElementFromId(260);
-		if(e != NULL)
-			e->remove();
-	}
-	{
-		gui::IGUIElement *e = getElementFromId(261);
-		if(e != NULL)
-			e->remove();
-	}
-}
-
-void GUIPauseMenu::regenerateGui(v2u32 screensize)
-{
-	/*
-		Remove stuff
-	*/
-	removeChildren();
-	
-	/*
-		Calculate new sizes and positions
-	*/
-	core::rect<s32> rect(
-			screensize.X/2 - 580/2,
-			screensize.Y/2 - 300/2,
-			screensize.X/2 + 580/2,
-			screensize.Y/2 + 300/2
-	);
-	
-	DesiredRect = rect;
-	recalculateAbsolutePosition(false);
-
-	v2s32 size = rect.getSize();
-
-	/*
-		Add stuff
-	*/
-	const s32 btn_height = 30;
-	const s32 btn_gap = 20;
-	const s32 btn_num = m_simple_singleplayer_mode ? 3 : 4;
-	s32 btn_y = size.Y/2-((btn_num*btn_height+(btn_num-1)*btn_gap))/2;
-	changeCtype("");
-	{
-		core::rect<s32> rect(0, 0, 140, btn_height);
-		rect = rect + v2s32(size.X/2-140/2, btn_y);
-		Environment->addButton(rect, this, 256,
-			wgettext("Continue"));
-	}
-	btn_y += btn_height + btn_gap;
-	if(!m_simple_singleplayer_mode)
-	{
-		{
-			core::rect<s32> rect(0, 0, 140, btn_height);
-			rect = rect + v2s32(size.X/2-140/2, btn_y);
-			Environment->addButton(rect, this, 261,
-				wgettext("Change Password"));
-		}
-		btn_y += btn_height + btn_gap;
-	}
-	{
-		core::rect<s32> rect(0, 0, 140, btn_height);
-		rect = rect + v2s32(size.X/2-140/2, btn_y);
-		Environment->addButton(rect, this, 260,
-			wgettext("Exit to Menu"));
-	}
-	btn_y += btn_height + btn_gap;
-	{
-		core::rect<s32> rect(0, 0, 140, btn_height);
-		rect = rect + v2s32(size.X/2-140/2, btn_y);
-		Environment->addButton(rect, this, 257,
-			wgettext("Exit to OS"));
-	}
-
-	{
-		core::rect<s32> rect(0, 0, 180, 240);
-		rect = rect + v2s32(size.X/2 + 90, size.Y/2-rect.getHeight()/2);
-		Environment->addStaticText(chartowchar_t(gettext(
-		"Default Controls:\n"
-		"- WASD: Walk\n"
-		"- Mouse left: dig/hit\n"
-		"- Mouse right: place/use\n"
-		"- Mouse wheel: select item\n"
-		"- 0...9: select item\n"
-		"- Shift: sneak\n"
-		"- R: Toggle viewing all loaded chunks\n"
-		"- I: Inventory menu\n"
-		"- ESC: This menu\n"
-		"- T: Chat\n"
-		)), rect, false, true, this, 258);
-	}
-	{
-		core::rect<s32> rect(0, 0, 180, 220);
-		rect = rect + v2s32(size.X/2 - 90 - rect.getWidth(), size.Y/2-rect.getHeight()/2);
-	
-		v2u32 max_texture_size;
-		{
-			video::IVideoDriver* driver = Environment->getVideoDriver();
-			max_texture_size = driver->getMaxTextureSize();
-		}
-
-		std::ostringstream os;
-		os<<"Minetest\n";
-		os<<BUILD_INFO<<"\n";
-		os<<"path_user = "<<wrap_rows(porting::path_user, 20)<<"\n";
-	
-		Environment->addStaticText(narrow_to_wide(os.str()).c_str(), rect, false, true, this, 259);
-	}
-	changeCtype("C");
-}
-
-void GUIPauseMenu::drawMenu()
-{
-	gui::IGUISkin* skin = Environment->getSkin();
-	if (!skin)
-		return;
-	video::IVideoDriver* driver = Environment->getVideoDriver();
-	
-	video::SColor bgcolor(140,0,0,0);
-	driver->draw2DRectangle(bgcolor, AbsoluteRect, &AbsoluteClippingRect);
-
-	gui::IGUIElement::draw();
-}
-
-bool GUIPauseMenu::OnEvent(const SEvent& event)
-{
-
-	if(event.EventType==EET_KEY_INPUT_EVENT)
-	{
-		if(event.KeyInput.PressedDown)
-		{
-			if(event.KeyInput.Key==KEY_ESCAPE)
-			{
-				quitMenu();
-				return true;
-			}
-			else if(event.KeyInput.Key==KEY_RETURN)
-			{
-				quitMenu();
-				return true;
-			}
-		}
-	}
-	if(event.EventType==EET_GUI_EVENT)
-	{
-		if(event.GUIEvent.EventType==gui::EGET_ELEMENT_FOCUS_LOST
-				&& isVisible())
-		{
-			if(!canTakeFocus(event.GUIEvent.Element))
-			{
-				dstream<<"GUIPauseMenu: Not allowing focus change."
-						<<std::endl;
-				// Returning true disables focus change
-				return true;
-			}
-		}
-		if(event.GUIEvent.EventType==gui::EGET_BUTTON_CLICKED)
-		{
-			switch(event.GUIEvent.Caller->getID())
-			{
-			case 256: // continue
-				quitMenu();
-				// ALWAYS return immediately after quitMenu()
-				return true;
-			case 261:
-				quitMenu();
-				m_gamecallback->changePassword();
-				return true;
-			case 260: // disconnect
-				m_gamecallback->disconnect();
-				quitMenu();
-				return true;
-			case 257: // exit
-				m_gamecallback->exitToOS();
-				quitMenu();
-				return true;
-			}
-		}
-	}
-	
-	return Parent ? Parent->OnEvent(event) : false;
-}
-
+/*
+Minetest-c55
+Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "guiPauseMenu.h"
+#include "debug.h"
+#include "serialization.h"
+#include "porting.h"
+#include "config.h"
+#include "main.h"
+#include <IGUICheckBox.h>
+#include <IGUIEditBox.h>
+#include <IGUIButton.h>
+#include <IGUIStaticText.h>
+#include <IGUIFont.h>
+#include "gettext.h"
+#include "util/string.h"
+
+GUIPauseMenu::GUIPauseMenu(gui::IGUIEnvironment* env,
+		gui::IGUIElement* parent, s32 id,
+		IGameCallback *gamecallback,
+		IMenuManager *menumgr,
+		bool simple_singleplayer_mode):
+	GUIModalMenu(env, parent, id, menumgr),
+	m_gamecallback(gamecallback),
+	m_simple_singleplayer_mode(simple_singleplayer_mode)
+{
+}
+
+GUIPauseMenu::~GUIPauseMenu()
+{
+	removeChildren();
+}
+
+void GUIPauseMenu::removeChildren()
+{
+	{
+		gui::IGUIElement *e = getElementFromId(256);
+		if(e != NULL)
+			e->remove();
+	}
+	{
+		gui::IGUIElement *e = getElementFromId(257);
+		if(e != NULL)
+			e->remove();
+	}
+	{
+		gui::IGUIElement *e = getElementFromId(258);
+		if(e != NULL)
+			e->remove();
+	}
+	{
+		gui::IGUIElement *e = getElementFromId(259);
+		if(e != NULL)
+			e->remove();
+	}
+	{
+		gui::IGUIElement *e = getElementFromId(260);
+		if(e != NULL)
+			e->remove();
+	}
+	{
+		gui::IGUIElement *e = getElementFromId(261);
+		if(e != NULL)
+			e->remove();
+	}
+}
+
+void GUIPauseMenu::regenerateGui(v2u32 screensize)
+{
+	/*
+		Remove stuff
+	*/
+	removeChildren();
+	
+	/*
+		Calculate new sizes and positions
+	*/
+	core::rect<s32> rect(
+			screensize.X/2 - 580/2,
+			screensize.Y/2 - 300/2,
+			screensize.X/2 + 580/2,
+			screensize.Y/2 + 300/2
+	);
+	
+	DesiredRect = rect;
+	recalculateAbsolutePosition(false);
+
+	v2s32 size = rect.getSize();
+
+	/*
+		Add stuff
+	*/
+	const s32 btn_height = 30;
+	const s32 btn_gap = 20;
+	const s32 btn_num = m_simple_singleplayer_mode ? 3 : 4;
+	s32 btn_y = size.Y/2-((btn_num*btn_height+(btn_num-1)*btn_gap))/2;
+	changeCtype("");
+	{
+		core::rect<s32> rect(0, 0, 140, btn_height);
+		rect = rect + v2s32(size.X/2-140/2, btn_y);
+		Environment->addButton(rect, this, 256,
+			wgettext("Continue"));
+	}
+	btn_y += btn_height + btn_gap;
+	if(!m_simple_singleplayer_mode)
+	{
+		{
+			core::rect<s32> rect(0, 0, 140, btn_height);
+			rect = rect + v2s32(size.X/2-140/2, btn_y);
+			Environment->addButton(rect, this, 261,
+				wgettext("Change Password"));
+		}
+		btn_y += btn_height + btn_gap;
+	}
+	{
+		core::rect<s32> rect(0, 0, 140, btn_height);
+		rect = rect + v2s32(size.X/2-140/2, btn_y);
+		Environment->addButton(rect, this, 260,
+			wgettext("Exit to Menu"));
+	}
+	btn_y += btn_height + btn_gap;
+	{
+		core::rect<s32> rect(0, 0, 140, btn_height);
+		rect = rect + v2s32(size.X/2-140/2, btn_y);
+		Environment->addButton(rect, this, 257,
+			wgettext("Exit to OS"));
+	}
+
+	{
+		core::rect<s32> rect(0, 0, 180, 240);
+		rect = rect + v2s32(size.X/2 + 90, size.Y/2-rect.getHeight()/2);
+		Environment->addStaticText(chartowchar_t(gettext(
+		"Default Controls:\n"
+		"- WASD: Walk\n"
+		"- Mouse left: dig/hit\n"
+		"- Mouse right: place/use\n"
+		"- Mouse wheel: select item\n"
+		"- 0...9: select item\n"
+		"- Shift: sneak\n"
+		"- R: Toggle viewing all loaded chunks\n"
+		"- I: Inventory menu\n"
+		"- ESC: This menu\n"
+		"- T: Chat\n"
+		)), rect, false, true, this, 258);
+	}
+	{
+		core::rect<s32> rect(0, 0, 180, 220);
+		rect = rect + v2s32(size.X/2 - 90 - rect.getWidth(), size.Y/2-rect.getHeight()/2);
+	
+		v2u32 max_texture_size;
+		{
+			video::IVideoDriver* driver = Environment->getVideoDriver();
+			max_texture_size = driver->getMaxTextureSize();
+		}
+
+		std::ostringstream os;
+		os<<"Minetest\n";
+		os<<BUILD_INFO<<"\n";
+		os<<"path_user = "<<wrap_rows(porting::path_user, 20)<<"\n";
+	
+		Environment->addStaticText(narrow_to_wide(os.str()).c_str(), rect, false, true, this, 259);
+	}
+	changeCtype("C");
+}
+
+void GUIPauseMenu::drawMenu()
+{
+	gui::IGUISkin* skin = Environment->getSkin();
+	if (!skin)
+		return;
+	video::IVideoDriver* driver = Environment->getVideoDriver();
+	
+	video::SColor bgcolor(140,0,0,0);
+	driver->draw2DRectangle(bgcolor, AbsoluteRect, &AbsoluteClippingRect);
+
+	gui::IGUIElement::draw();
+}
+
+bool GUIPauseMenu::OnEvent(const SEvent& event)
+{
+
+	if(event.EventType==EET_KEY_INPUT_EVENT)
+	{
+		if(event.KeyInput.PressedDown)
+		{
+			if(event.KeyInput.Key==KEY_ESCAPE)
+			{
+				quitMenu();
+				return true;
+			}
+			else if(event.KeyInput.Key==KEY_RETURN)
+			{
+				quitMenu();
+				return true;
+			}
+		}
+	}
+	if(event.EventType==EET_GUI_EVENT)
+	{
+		if(event.GUIEvent.EventType==gui::EGET_ELEMENT_FOCUS_LOST
+				&& isVisible())
+		{
+			if(!canTakeFocus(event.GUIEvent.Element))
+			{
+				dstream<<"GUIPauseMenu: Not allowing focus change."
+						<<std::endl;
+				// Returning true disables focus change
+				return true;
+			}
+		}
+		if(event.GUIEvent.EventType==gui::EGET_BUTTON_CLICKED)
+		{
+			switch(event.GUIEvent.Caller->getID())
+			{
+			case 256: // continue
+				quitMenu();
+				// ALWAYS return immediately after quitMenu()
+				return true;
+			case 261:
+				quitMenu();
+				m_gamecallback->changePassword();
+				return true;
+			case 260: // disconnect
+				m_gamecallback->disconnect();
+				quitMenu();
+				return true;
+			case 257: // exit
+				m_gamecallback->exitToOS();
+				quitMenu();
+				return true;
+			}
+		}
+	}
+	
+	return Parent ? Parent->OnEvent(event) : false;
+}
+
--- a/src/guiPauseMenu.h
+++ b/src/guiPauseMenu.h
@ -1,60 +1,60 @@
-/*
-Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public License along
-with this program; if not, write to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-
-#ifndef GUIPAUSEMENU_HEADER
-#define GUIPAUSEMENU_HEADER
-
-#include "irrlichttypes_extrabloated.h"
-#include "modalMenu.h"
-
-class IGameCallback
-{
-public:
-	virtual void exitToOS() = 0;
-	virtual void disconnect() = 0;
-	virtual void changePassword() = 0;
-};
-
-class GUIPauseMenu : public GUIModalMenu
-{
-public:
-	GUIPauseMenu(gui::IGUIEnvironment* env,
-			gui::IGUIElement* parent, s32 id,
-			IGameCallback *gamecallback,
-			IMenuManager *menumgr,
-			bool simple_singleplayer_mode);
-	~GUIPauseMenu();
-	
-	void removeChildren();
-	/*
-		Remove and re-add (or reposition) stuff
-	*/
-	void regenerateGui(v2u32 screensize);
-
-	void drawMenu();
-
-	bool OnEvent(const SEvent& event);
-	
-private:
-	IGameCallback *m_gamecallback;
-	bool m_simple_singleplayer_mode;
-};
-
-#endif
-
+/*
+Minetest-c55
+Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef GUIPAUSEMENU_HEADER
+#define GUIPAUSEMENU_HEADER
+
+#include "irrlichttypes_extrabloated.h"
+#include "modalMenu.h"
+
+class IGameCallback
+{
+public:
+	virtual void exitToOS() = 0;
+	virtual void disconnect() = 0;
+	virtual void changePassword() = 0;
+};
+
+class GUIPauseMenu : public GUIModalMenu
+{
+public:
+	GUIPauseMenu(gui::IGUIEnvironment* env,
+			gui::IGUIElement* parent, s32 id,
+			IGameCallback *gamecallback,
+			IMenuManager *menumgr,
+			bool simple_singleplayer_mode);
+	~GUIPauseMenu();
+	
+	void removeChildren();
+	/*
+		Remove and re-add (or reposition) stuff
+	*/
+	void regenerateGui(v2u32 screensize);
+
+	void drawMenu();
+
+	bool OnEvent(const SEvent& event);
+	
+private:
+	IGameCallback *m_gamecallback;
+	bool m_simple_singleplayer_mode;
+};
+
+#endif
+
--- a/src/map.cpp
+++ b/src/map.cpp
@ -1994,7 +1994,7 @@ void Map::removeNodeTimer(v3s16 p)
 	ServerMap
 */

-ServerMap::ServerMap(std::string savedir, IGameDef *gamedef):
+ServerMap::ServerMap(std::string savedir, IGameDef *gamedef, EmergeManager *emerge):
 	Map(dout_server, gamedef),
 	m_seed(0),
 	m_map_metadata_changed(true),
@ -2004,6 +2004,8 @@ ServerMap::ServerMap(std::string savedir, IGameDef *gamedef):
 {
 	verbosestream<<__FUNCTION_NAME<<std::endl;

+	m_emerge = emerge;
+
 	//m_chunksize = 8; // Takes a few seconds

 	if (g_settings->get("fixed_map_seed").empty())
@ -2011,12 +2013,15 @@ ServerMap::ServerMap(std::string savedir, IGameDef *gamedef):
 		m_seed = (((u64)(myrand()%0xffff)<<0)
 				+ ((u64)(myrand()%0xffff)<<16)
 				+ ((u64)(myrand()%0xffff)<<32)
-				+ ((u64)(myrand()%0xffff)<<48));
+				+ ((u64)(myrand()&0xffff)<<48));
 	}
 	else
 	{
 		m_seed = g_settings->getU64("fixed_map_seed");
 	}
+	emerge->seed = m_seed;
+	emerge->water_level = g_settings->getS16("default_water_level");
+	//<set noiseparams here>

 	/*
 		Experimental and debug stuff
@ -2136,7 +2141,7 @@ ServerMap::~ServerMap()
 #endif
 }

-void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
+void ServerMap::initBlockMake(BlockMakeData *data, v3s16 blockpos)
 {
 	bool enable_mapgen_debug_info = g_settings->getBool("enable_mapgen_debug_info");
 	if(enable_mapgen_debug_info)
@ -2208,7 +2213,7 @@ void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)

 						Refer to the map generator heuristics.
 					*/
-					bool ug = mapgen::block_is_underground(data->seed, p);
+					bool ug = m_emerge->isBlockUnderground(p);
 					block->setIsUnderground(ug);
 				}

@ -2243,7 +2248,7 @@ void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
 	// Data is ready now.
 }

-MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
+MapBlock* ServerMap::finishBlockMake(BlockMakeData *data,
 		core::map<v3s16, MapBlock*> &changed_blocks)
 {
 	v3s16 blockpos_min = data->blockpos_min;
@ -2483,6 +2488,7 @@ ServerMapSector * ServerMap::createSector(v2s16 p2d)
 	return sector;
 }

+#if 0
 /*
 	This is a quick-hand function for calling makeBlock().
 */
@ -2518,7 +2524,7 @@ MapBlock * ServerMap::generateBlock(
 	/*
 		Create block make data
 	*/
-	mapgen::BlockMakeData data;
+	BlockMakeData data;
 	initBlockMake(&data, p);

 	/*
@ -2526,7 +2532,8 @@ MapBlock * ServerMap::generateBlock(
 	*/
 	{
 		TimeTaker t("mapgen::make_block()");
-		mapgen::make_block(&data);
+		mapgen->makeChunk(&data);
+		//mapgen::make_block(&data);

 		if(enable_mapgen_debug_info == false)
 			t.stop(true); // Hide output
@ -2595,6 +2602,7 @@ MapBlock * ServerMap::generateBlock(

 	return block;
 }
+#endif

 MapBlock * ServerMap::createBlock(v3s16 p)
 {
@ -2656,14 +2664,15 @@ MapBlock * ServerMap::createBlock(v3s16 p)
 	}
 	// Create blank
 	block = sector->createBlankBlock(block_y);
+
 	return block;
 }

-MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
+MapBlock * ServerMap::emergeBlock(v3s16 p, bool create_blank)
 {
-	DSTACKF("%s: p=(%d,%d,%d), allow_generate=%d",
+	DSTACKF("%s: p=(%d,%d,%d), create_blank=%d",
 			__FUNCTION_NAME,
-			p.X, p.Y, p.Z, allow_generate);
+			p.X, p.Y, p.Z, create_blank);
 	
 	{
 		MapBlock *block = getBlockNoCreateNoEx(p);
@ -2677,7 +2686,13 @@ MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
 			return block;
 	}

-	if(allow_generate)
+	if (create_blank) {
+		ServerMapSector *sector = createSector(v2s16(p.X, p.Z));
+		MapBlock *block = sector->createBlankBlock(p.Y);
+
+		return block;
+	}
+	/*if(allow_generate)
 	{
 		core::map<v3s16, MapBlock*> modified_blocks;
 		MapBlock *block = generateBlock(p, modified_blocks);
@ -2700,7 +2715,7 @@ MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
 								
 			return block;
 		}
-	}
+	}*/

 	return NULL;
 }
@ -2742,7 +2757,7 @@ plan_b:
 		Determine from map generator noise functions
 	*/
 	
-	s16 level = mapgen::find_ground_level_from_noise(m_seed, p2d, 1);
+	s16 level = m_emerge->getGroundLevelAtPoint(p2d);
 	return level;

 	//double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
@ -3062,6 +3077,7 @@ void ServerMap::saveMapMeta()
 	
 	Settings params;
 	params.setU64("seed", m_seed);
+	params.setS16("water_level", m_emerge->water_level);

 	params.writeLines(os);

@ -3100,8 +3116,11 @@ void ServerMap::loadMapMeta()
 			break;
 		params.parseConfigLine(line);
 	}
-
+	
 	m_seed = params.getU64("seed");
+	m_emerge->seed        = m_seed;
+	m_emerge->water_level = params.getS16("water_level");
+	//m_emerge->np = ;

 	verbosestream<<"ServerMap::loadMapMeta(): "<<"seed="<<m_seed<<std::endl;
 }
--- a/src/map.h
+++ b/src/map.h
@ -30,6 +30,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "mapnode.h"
 #include "constants.h"
 #include "voxel.h"
+#include "mapgen.h" //for BlockMakeData and EmergeManager
 #include "modifiedstate.h"
 #include "util/container.h"
 #include "nodetimer.h"
@ -46,9 +47,6 @@ class NodeMetadata;
 class IGameDef;
 class IRollbackReportSink;

-namespace mapgen{
-	struct BlockMakeData;
-};

 /*
 	MapEditEvent
@ -360,7 +358,7 @@ public:
 	/*
 		savedir: directory to which map data should be saved
 	*/
-	ServerMap(std::string savedir, IGameDef *gamedef);
+	ServerMap(std::string savedir, IGameDef *gamedef, EmergeManager *emerge);
 	~ServerMap();

 	s32 mapType() const
@ -379,15 +377,15 @@ public:
 	/*
 		Blocks are generated by using these and makeBlock().
 	*/
-	void initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos);
-	MapBlock* finishBlockMake(mapgen::BlockMakeData *data,
+	void initBlockMake(BlockMakeData *data, v3s16 blockpos);
+	MapBlock* finishBlockMake(BlockMakeData *data,
 			core::map<v3s16, MapBlock*> &changed_blocks);
 	
-	// A non-threaded wrapper to the above
-	MapBlock * generateBlock(
+	// A non-threaded wrapper to the above  - DEFUNCT
+/*	MapBlock * generateBlock(
 			v3s16 p,
 			core::map<v3s16, MapBlock*> &modified_blocks
-	);
+	);*/
 	
 	/*
 		Get a block from somewhere.
@ -400,9 +398,10 @@ public:
 		Forcefully get a block from somewhere.
 		- Memory
 		- Load from disk
-		- Generate
+		- Create blank filled with CONTENT_IGNORE
+		
 	*/
-	MapBlock * emergeBlock(v3s16 p, bool allow_generate=true);
+	MapBlock * emergeBlock(v3s16 p, bool create_blank=true);
 	
 	// Helper for placing objects on ground level
 	s16 findGroundLevel(v2s16 p2d);
@ -479,6 +478,7 @@ public:

 	u64 getSeed(){ return m_seed; }

+	EmergeManager *m_emerge;
 private:
 	// Seed used for all kinds of randomness in generation
 	u64 m_seed;
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@ -20,7 +20,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "mapgen.h"
 #include "voxel.h"
 #include "noise.h"
+#include "biome.h"
 #include "mapblock.h"
+#include "mapnode.h"
 #include "map.h"
 //#include "serverobject.h"
 #include "content_sao.h"
@ -28,9 +30,296 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "content_mapnode.h" // For content_mapnode_get_new_name
 #include "voxelalgorithms.h"
 #include "profiler.h"
+#include "settings.h" // For g_settings
 #include "main.h" // For g_profiler
 #include "treegen.h"

+NoiseParams nparams_mtdefault =
+	{0.0, 20.0, v3f(250., 250., 250.), 82341, 5, 0.6}; //terrain
+NoiseParams nparams_def_bgroup =
+	{0.5, 1/(2*1.6), v3f(250., 250., 250.), 5923, 2, 0.60}; //0 to 1
+NoiseParams nparams_def_heat =
+	{25.0, 50.0, v3f(500., 500., 500.), 35293, 1, 0.00}; //-25 to 75
+NoiseParams nparams_def_humidity =
+	{50, 100/(2*1.6), v3f(750., 750., 750.), 12094, 2, 0.60}; //0 to 100
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+/*
+Mapgen::Mapgen(BiomeDefManager *biomedef) {
+	Mapgen(0, 0, biomedef);
+}*/
+
+
+Mapgen::Mapgen(BiomeDefManager *biomedef, int mapgenid, u64 seed) {
+	initMapgen(biomedef, mapgenid, seed,
+		&nparams_mtdefault, &nparams_def_bgroup,
+		&nparams_def_heat,  &nparams_def_humidity);
+}
+
+
+Mapgen::Mapgen(BiomeDefManager *biomedef, int mapgenid, u64 seed,
+			   NoiseParams *np_terrain, NoiseParams *np_bgroup,
+			   NoiseParams *np_heat,    NoiseParams *np_humidity) {
+	initMapgen(biomedef, mapgenid, seed,
+		np_terrain, np_bgroup, np_heat, np_humidity);
+}
+
+void Mapgen::initMapgen(BiomeDefManager *biomedef, int mapgenid, u64 seed,
+			   NoiseParams *np_terrain, NoiseParams *np_bgroup,
+			   NoiseParams *np_heat,    NoiseParams *np_humidity) {
+	this->generating  = false;
+	this->id       = mapgenid;
+	this->seed     = (int)seed;
+	this->biomedef = biomedef;
+	this->csize       = v3s16(5, 5, 5) * MAP_BLOCKSIZE; /////////////////get this from config!
+	this->water_level = g_settings->getS16("default_water_level"); ////fix this!
+
+	this->np_terrain  = np_terrain;
+	this->np_bgroup   = np_bgroup;
+	this->np_heat     = np_heat;
+	this->np_humidity = np_humidity;
+	noise_terrain  = new Noise(np_terrain,  seed, csize.X, csize.Y);
+	noise_bgroup   = new Noise(np_bgroup,   seed, csize.X, csize.Y);
+	noise_heat     = new Noise(np_heat,     seed, csize.X, csize.Y);
+	noise_humidity = new Noise(np_humidity, seed, csize.X, csize.Y);
+
+	this->ndef = biomedef->ndef;
+	n_air   = MapNode(ndef->getId("mapgen_air"));
+	n_water = MapNode(ndef->getId("mapgen_water_source"));
+	n_lava  = MapNode(ndef->getId("mapgen_lava_source"));
+}
+
+
+Mapgen::~Mapgen() {
+	delete noise_terrain;
+	delete noise_bgroup;
+	delete noise_heat;
+	delete noise_humidity;
+}
+
+
+void Mapgen::makeChunk(BlockMakeData *data) {
+	if (data->no_op)
+		return;
+
+	//printf("generating...\n");//////////////
+
+	assert(data->vmanip);
+	assert(data->nodedef);
+	assert(data->blockpos_requested.X >= data->blockpos_min.X &&
+		   data->blockpos_requested.Y >= data->blockpos_min.Y &&
+		   data->blockpos_requested.Z >= data->blockpos_min.Z);
+	assert(data->blockpos_requested.X <= data->blockpos_max.X &&
+		   data->blockpos_requested.Y <= data->blockpos_max.Y &&
+		   data->blockpos_requested.Z <= data->blockpos_max.Z);
+
+	this->generating = true;
+
+	this->data    = data;
+	this->vmanip  = data->vmanip;
+	v3s16 em = vmanip->m_area.getExtent();
+	this->ystride = em.X;
+	this->zstride = em.Y * em.X;
+
+	node_min = (data->blockpos_min) * MAP_BLOCKSIZE;
+	node_max = (data->blockpos_max + v3s16(1, 1, 1)) * MAP_BLOCKSIZE - v3s16(1, 1, 1);
+	v3s16 full_node_min = (data->blockpos_min - 1) * MAP_BLOCKSIZE;
+	v3s16 full_node_max = (data->blockpos_max + 2) * MAP_BLOCKSIZE - v3s16(1,1,1);
+
+	int y1 = node_min.Y;
+	int y2 = node_max.Y;
+	int x  = node_min.X;
+	int z  = node_min.Z;
+	//printf("full_node_min.X: %d  |  full_node_min.Z:  %d   |  MinEdge:  %d   |  MaxEdge:  %d\n", node_min.X, node_min.Z, vmanip->m_area.MinEdge.X, vmanip->m_area.MinEdge.Z);
+	TimeTaker timer("Generating terrain");
+	map_terrain  = noise_terrain->perlinMap2D(x, z);
+	map_bgroup   = noise_bgroup->perlinMap2D(x, z);
+	map_heat     = noise_heat->perlinMap2D(x, z);
+	map_humidity = noise_humidity->perlinMap2D(x, z);
+
+	int i = 0;
+	for (x = node_min.X; x <= node_max.X; x++) {
+		for (z = node_min.Z; z <= node_max.Z; z++) {
+			Biome *biome = biomedef->getBiome(map_bgroup[i], map_heat[i], map_humidity[i]);
+			biome->genColumn(this, x, z, y1, y2);
+			i++;
+		}
+	}
+	timer.stop();
+
+	//genCave();
+	//genDungeon();
+	//add blobs of dirt and gravel underground
+	//decorateChunk();
+	//updateLiquid(full_node_min, full_node_max);
+	updateLighting(node_min, node_max);
+
+	this->generating = false;
+	//printf("generated block (%d, %d) to (%d, %d)\n", node_min.X, node_min.Y, node_max.X, node_max.Y);//////////
+}
+
+
+void Mapgen::updateLiquid(v3s16 node_min, v3s16 node_max) {
+	bool isliquid, wasliquid;
+	u32 i;
+	content_t c;
+
+	for (s16 z = node_min.Z; z <= node_max.Z; z++) {
+		for (s16 x = node_min.X; x <= node_max.X; x++) {
+			v2s16 p2d(x, z);
+			wasliquid = true;
+			v3s16 em  = vmanip->m_area.getExtent();
+			i = vmanip->m_area.index(v3s16(p2d.X, node_max.Y, p2d.Y));
+
+			for (s16 y = node_max.Y; y >= node_min.Y; y--) {
+				isliquid = ndef->get(vmanip->m_data[i]).isLiquid();
+				//there was a change between liquid and nonliquid, add to queue
+				if (isliquid != wasliquid)
+					data->transforming_liquid.push_back(v3s16(p2d.X, y, p2d.Y));
+
+				wasliquid = isliquid;
+				vmanip->m_area.add_y(em, i, -1);
+			}
+		}
+	}
+}
+
+
+void Mapgen::updateLighting(v3s16 node_min, v3s16 node_max) {
+	enum LightBank banks[2] = {LIGHTBANK_DAY, LIGHTBANK_NIGHT};
+
+	VoxelArea a(node_min - v3s16(1,0,1) * MAP_BLOCKSIZE,
+				node_max + v3s16(1,0,1) * MAP_BLOCKSIZE);
+	bool block_is_underground = (water_level > node_max.Y);
+	bool sunlight = !block_is_underground;
+
+	ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
+	for (int i = 0; i < 2; i++) {
+		enum LightBank bank = banks[i];
+        core::map<v3s16, bool> light_sources;
+        core::map<v3s16, u8> unlight_from;
+
+		voxalgo::clearLightAndCollectSources(*vmanip, a, bank, ndef,
+                                        light_sources, unlight_from);
+		voxalgo::propagateSunlight(*vmanip, a, sunlight, light_sources, ndef);
+        printf("light_sources: %d\t\tunlight_from: %d\n", light_sources.size(), unlight_from.size());
+		vmanip->unspreadLight(bank, unlight_from, light_sources, ndef);
+		vmanip->spreadLight(bank, light_sources, ndef);
+	}
+}
+
+
+/*class EmergeManager {
+public:
+	int seed;
+	int water_level;
+	BiomeDefManager *biomedef;
+
+	//mapgen objects here
+
+	void addBlockToQueue();
+
+
+	//mapgen helper methods
+	int getGroundLevelAtPoint(u64 mseed, v2s16 p);
+	bool isBlockUnderground(u64 mseed, v3s16 blockpos);
+	u32 getBlockSeed(u64 mseed, v3s16 p);
+};*/
+
+EmergeManager::EmergeManager(IGameDef *gamedef) {
+	this->seed = 0;
+	this->water_level = 0;
+	this->np_terrain  = &nparams_mtdefault;
+	this->np_bgroup   = &nparams_def_bgroup;
+	this->np_heat     = &nparams_def_heat;
+	this->np_humidity = &nparams_def_humidity;
+
+	this->biomedef = new BiomeDefManager(gamedef);
+}
+
+
+EmergeManager::~EmergeManager() {
+	delete biomedef;
+}
+
+
+void EmergeManager::addBlockToQueue() {
+
+}
+
+
+Biome *EmergeManager::getBiomeAtPoint(v3s16 p) {
+	float bgroup   = NoisePerlin2D(np_bgroup,   p.X, p.Y, seed);
+	float heat     = NoisePerlin2D(np_heat,     p.X, p.Y, seed);
+	float humidity = NoisePerlin2D(np_humidity, p.X, p.Y, seed);
+	return biomedef->getBiome(bgroup, heat, humidity);
+}
+
+
+//FIXME:  This assumes y == 0, that is, always in a non-hell/non-sky biome
+int EmergeManager::getGroundLevelAtPoint(v2s16 p) {
+	float terrain = NoisePerlin2D(np_terrain, p.X, p.Y, seed);
+	Biome *biome = getBiomeAtPoint(v3s16(p.X, p.Y, 0));
+	return biome->getSurfaceHeight(terrain);
+}
+
+
+bool EmergeManager::isBlockUnderground(v3s16 blockpos) {
+	/*
+	v2s16 p = v2s16((blockpos.X * MAP_BLOCKSIZE) + MAP_BLOCKSIZE / 2,
+					(blockpos.Y * MAP_BLOCKSIZE) + MAP_BLOCKSIZE / 2);
+	int ground_level = getGroundLevelAtPoint(p);
+	return blockpos.Y * (MAP_BLOCKSIZE + 1) <= min(water_level, ground_level);
+	*/
+
+	//yuck, but then again, should i bother being accurate?
+	//the height of the nodes in a single block is quite variable
+	return false; //blockpos.Y * (MAP_BLOCKSIZE + 1) <= water_level;
+}
+
+
+u32 EmergeManager::getBlockSeed(v3s16 p) {
+	return (u32)(seed & 0xFFFFFFFF) +
+		p.Z * 38134234 +
+		p.Y * 42123 +
+		p.Y * 23;
+}
+
+
+/////////////////////////////////// legacy static functions for farmesh
+
+
+s16 Mapgen::find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision) {
+	//just need to return something
+	s16 level = 5;
+	return level;
+}
+
+
+bool Mapgen::get_have_beach(u64 seed, v2s16 p2d) {
+	double sandnoise = noise2d_perlin(
+			0.2+(float)p2d.X/250, 0.7+(float)p2d.Y/250,
+			seed+59420, 3, 0.50);
+
+	return (sandnoise > 0.15);
+}
+
+
+double Mapgen::tree_amount_2d(u64 seed, v2s16 p) {
+	double noise = noise2d_perlin(
+			0.5+(float)p.X/125, 0.5+(float)p.Y/125,
+			seed+2, 4, 0.66);
+	double zeroval = -0.39;
+	if(noise < zeroval)
+		return 0;
+	else
+		return 0.04 * (noise-zeroval) / (1.0-zeroval);
+}
+
+
+#if 0 /// BIG COMMENT
 namespace mapgen
 {

@ -121,6 +410,7 @@ static s16 find_stone_level(VoxelManipulator &vmanip, v2s16 p2d,
 }
 #endif

+
 #if 0

 static void make_papyrus(VoxelManipulator &vmanip, v3s16 p0,
@ -190,7 +480,7 @@ static void make_room1(VoxelManipulator &vmanip, v3s16 roomsize, v3s16 roomplace
 			vmanip.m_data[vi] = MapNode(ndef->getId("mapgen_cobble"));
 		}
 	}
-	
+
 	// Make +-Z walls
 	for(s16 x=0; x<roomsize.X; x++)
 	for(s16 y=0; y<roomsize.Y; y++)
@ -214,7 +504,7 @@ static void make_room1(VoxelManipulator &vmanip, v3s16 roomsize, v3s16 roomplace
 			vmanip.m_data[vi] = MapNode(ndef->getId("mapgen_cobble"));
 		}
 	}
-	
+
 	// Make +-Y walls (floor and ceiling)
 	for(s16 z=0; z<roomsize.Z; z++)
 	for(s16 x=0; x<roomsize.X; x++)
@ -238,7 +528,7 @@ static void make_room1(VoxelManipulator &vmanip, v3s16 roomsize, v3s16 roomplace
 			vmanip.m_data[vi] = MapNode(ndef->getId("mapgen_cobble"));
 		}
 	}
-	
+
 	// Fill with air
 	for(s16 z=1; z<roomsize.Z-1; z++)
 	for(s16 y=1; y<roomsize.Y-1; y++)
@ -401,9 +691,9 @@ static void make_corridor(VoxelManipulator &vmanip, v3s16 doorplace,
 		if(partcount >= partlength)
 		{
 			partcount = 0;
-			
+
 			dir = random_turn(random, dir);
-			
+
 			partlength = random.range(1,length);

 			make_stairs = 0;
@ -443,7 +733,7 @@ public:
 	{
 		m_dir = dir;
 	}
-	
+
 	bool findPlaceForDoor(v3s16 &result_place, v3s16 &result_dir)
 	{
 		for(u32 i=0; i<100; i++)
@ -540,7 +830,7 @@ public:
 			if(doordir == v3s16(0,0,-1)) // Z-
 				roomplace = doorplace + v3s16(-roomsize.X/2,-1,-roomsize.Z+1);
 #endif
-			
+
 			// Check fit
 			bool fits = true;
 			for(s16 z=1; z<roomsize.Z-1; z++)
@ -587,7 +877,7 @@ static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random,
 	v3s16 areasize = vmanip.m_area.getExtent();
 	v3s16 roomsize;
 	v3s16 roomplace;
-	
+
 	/*
 		Find place for first room
 	*/
@ -627,20 +917,20 @@ static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random,
 	// No place found
 	if(fits == false)
 		return;
-	
+
 	/*
 		Stores the center position of the last room made, so that
 		a new corridor can be started from the last room instead of
 		the new room, if chosen so.
 	*/
 	v3s16 last_room_center = roomplace+v3s16(roomsize.X/2,1,roomsize.Z/2);
-	
+
 	u32 room_count = random.range(2,7);
 	for(u32 i=0; i<room_count; i++)
 	{
 		// Make a room to the determined place
 		make_room1(vmanip, roomsize, roomplace, ndef);
-		
+
 		v3s16 room_center = roomplace + v3s16(roomsize.X/2,1,roomsize.Z/2);

 		// Place torch at room center (for testing)
@ -649,7 +939,7 @@ static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random,
 		// Quit if last room
 		if(i == room_count-1)
 			break;
-		
+
 		// Determine walker start position

 		bool start_in_last_room = (random.range(0,2)!=0);
@ -667,7 +957,7 @@ static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random,
 			// Store center of current room as the last one
 			last_room_center = room_center;
 		}
-		
+
 		// Create walker and find a place for a door
 		RoomWalker walker(vmanip, walker_start_place, random, ndef);
 		v3s16 doorplace;
@ -675,20 +965,20 @@ static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random,
 		bool r = walker.findPlaceForDoor(doorplace, doordir);
 		if(r == false)
 			return;
-		
+
 		if(random.range(0,1)==0)
 			// Make the door
 			make_door1(vmanip, doorplace, doordir, ndef);
 		else
 			// Don't actually make a door
 			doorplace -= doordir;
-		
+
 		// Make a random corridor starting from the door
 		v3s16 corridor_end;
 		v3s16 corridor_end_dir;
 		make_corridor(vmanip, doorplace, doordir, corridor_end,
 				corridor_end_dir, random, ndef);
-		
+
 		// Find a place for a random sized room
 		roomsize = v3s16(random.range(4,8),random.range(4,6),random.range(4,8));
 		walker.setPos(corridor_end);
@ -703,7 +993,7 @@ static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random,
 		else
 			// Don't actually make a door
 			roomplace -= doordir;
-		
+
 	}
 }
 #endif
@ -926,7 +1216,7 @@ s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision)
 			}
 		}
 	}
-	
+
 	// This is more like the actual ground level
 	level += dec[i-1]/2;

@ -1024,7 +1314,7 @@ bool block_is_underground(u64 seed, v3s16 blockpos)
 			seed, v2s16(blockpos.X, blockpos.Z));*/
 	// Nah, this is just a heuristic, just return something
 	s16 minimum_groundlevel = WATER_LEVEL;
-	
+
 	if(blockpos.Y*MAP_BLOCKSIZE + MAP_BLOCKSIZE <= minimum_groundlevel)
 		return true;
 	else
@ -1132,9 +1422,9 @@ BiomeType get_biome(u64 seed, v2s16 p2d)
 	double d = noise2d_perlin(
 			0.6+(float)p2d.X/250, 0.2+(float)p2d.Y/250,
 			seed+9130, 3, 0.50);
-	if(d > 0.45) 
+	if(d > 0.45)
 		return BT_DESERT;
-	if(d > 0.35 && (noise2d( p2d.X, p2d.Y, int(seed) ) + 1.0) > ( 0.45 - d ) * 20.0  ) 
+	if(d > 0.35 && (noise2d( p2d.X, p2d.Y, int(seed) ) + 1.0) > ( 0.45 - d ) * 20.0  )
 		return BT_DESERT;
 	return BT_NORMAL;
 };
@ -1169,7 +1459,7 @@ void make_block(BlockMakeData *data)
 	// Hack: use minimum block coordinates for old code that assumes
 	// a single block
 	v3s16 blockpos = data->blockpos_requested;
-	
+
 	/*dstream<<"makeBlock(): ("<<blockpos.X<<","<<blockpos.Y<<","
 			<<blockpos.Z<<")"<<std::endl;*/

@ -1177,7 +1467,7 @@ void make_block(BlockMakeData *data)
 	v3s16 blockpos_max = data->blockpos_max;
 	v3s16 blockpos_full_min = blockpos_min - v3s16(1,1,1);
 	v3s16 blockpos_full_max = blockpos_max + v3s16(1,1,1);
-	
+
 	ManualMapVoxelManipulator &vmanip = *(data->vmanip);
 	// Area of central chunk
 	v3s16 node_min = blockpos_min*MAP_BLOCKSIZE;
@ -1193,10 +1483,10 @@ void make_block(BlockMakeData *data)
 	int volume_blocks = (blockpos_max.X - blockpos_min.X + 1)
 			* (blockpos_max.Y - blockpos_min.Y + 1)
 			* (blockpos_max.Z - blockpos_max.Z + 1);
-	
+
 	int volume_nodes = volume_blocks *
 			MAP_BLOCKSIZE*MAP_BLOCKSIZE*MAP_BLOCKSIZE;
-	
+
 	// Generated surface area
 	//double gen_area_nodes = MAP_BLOCKSIZE*MAP_BLOCKSIZE * rel_volume;

@ -1207,7 +1497,7 @@ void make_block(BlockMakeData *data)
 		Create a block-specific seed
 	*/
 	u32 blockseed = get_blockseed(data->seed, full_node_min);
-	
+
 	/*
 		Cache some ground type values for speed
 	*/
@ -1253,13 +1543,13 @@ void make_block(BlockMakeData *data)
 	{
 #if 1
 	TimeTaker timer1("Generating ground level");
-	
+
 	for(s16 x=node_min.X; x<=node_max.X; x++)
 	for(s16 z=node_min.Z; z<=node_max.Z; z++)
 	{
 		// Node position
 		v2s16 p2d = v2s16(x,z);
-		
+
 		/*
 			Skip of already generated
 		*/
@ -1274,7 +1564,7 @@ void make_block(BlockMakeData *data)

 		// Use perlin noise for ground height
 		surface_y_f = base_rock_level_2d(data->seed, p2d);
-		
+
 		/*// Experimental stuff
 		{
 			float a = highlands_level_2d(data->seed, p2d);
@ -1284,7 +1574,7 @@ void make_block(BlockMakeData *data)

 		// Convert to integer
 		s16 surface_y = (s16)surface_y_f;
-		
+
 		// Log it
 		if(surface_y > stone_surface_max_y)
 			stone_surface_max_y = surface_y;
@ -1316,9 +1606,9 @@ void make_block(BlockMakeData *data)
 		}
 	}
 #endif
-	
+
 	}//timer1
-	
+
 	// Limit dirt flow area by 1 because mud is flown into neighbors.
 	assert(central_area_size.X == central_area_size.Z);
 	s16 mudflow_minpos = 0-max_spread_amount+1;
@ -1375,7 +1665,7 @@ void make_block(BlockMakeData *data)
 			tunnel_routepoints = ps.range(10, ps.range(15,30));
 		}
 		bool large_cave_is_flat = (ps.range(0,1) == 0);
-		
+
 		v3f main_direction(0,0,0);

 		// Allowed route area size in nodes
@ -1391,7 +1681,7 @@ void make_block(BlockMakeData *data)
 		s16 more = max_spread_amount - max_tunnel_diameter/2 - insure;
 		ar += v3s16(1,0,1) * more * 2;
 		of -= v3s16(1,0,1) * more;
-		
+
 		s16 route_y_min = 0;
 		// Allow half a diameter + 7 over stone surface
 		s16 route_y_max = -of.Y + stone_surface_max_y + max_tunnel_diameter/2 + 7;
@ -1434,7 +1724,7 @@ void make_block(BlockMakeData *data)
 			if(coming_from_surface)
 				route_start_y_min = -of.Y + stone_surface_max_y + 10;
 		}*/
-		
+
 		route_start_y_min = rangelim(route_start_y_min, 0, ar.Y-1);
 		route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y-1);

@ -1451,11 +1741,11 @@ void make_block(BlockMakeData *data)
 		MapNode airnode(CONTENT_AIR);
 		MapNode waternode(c_water_source);
 		MapNode lavanode(c_lava_source);
-		
+
 		/*
 			Generate some tunnel starting from orp
 		*/
-		
+
 		for(u16 j=0; j<tunnel_routepoints; j++)
 		{
 			if(j%dswitchint==0 && large_cave == false)
@ -1467,12 +1757,12 @@ void make_block(BlockMakeData *data)
 				);
 				main_direction *= (float)ps.range(0, 10)/10;
 			}
-			
+
 			// Randomize size
 			s16 min_d = min_tunnel_diameter;
 			s16 max_d = max_tunnel_diameter;
 			s16 rs = ps.range(min_d, max_d);
-			
+
 			// Every second section is rough
 			bool randomize_xz = (ps2.range(1,2) == 1);

@ -1495,13 +1785,13 @@ void make_block(BlockMakeData *data)
 			}

 			v3f vec;
-			
+
 			vec = v3f(
 				(float)(ps.next()%(maxlen.X*1))-(float)maxlen.X/2,
 				(float)(ps.next()%(maxlen.Y*1))-(float)maxlen.Y/2,
 				(float)(ps.next()%(maxlen.Z*1))-(float)maxlen.Z/2
 			);
-		
+
 			// Jump downward sometimes
 			if(!large_cave && ps.range(0,12) == 0)
 			{
@ -1511,7 +1801,7 @@ void make_block(BlockMakeData *data)
 					(float)(ps.next()%(maxlen.Z*1))-(float)maxlen.Z/2
 				);
 			}
-			
+
 			/*if(large_cave){
 				v3f p = orp + vec;
 				s16 h = find_ground_level_clever(vmanip,
@ -1573,12 +1863,12 @@ void make_block(BlockMakeData *data)
 							s16 x = cp.X + x0;
 							v3s16 p(x,y,z);
 							p += of;
-							
+
 							if(vmanip.m_area.contains(p) == false)
 								continue;
-							
+
 							u32 i = vmanip.m_area.index(p);
-							
+
 							if(large_cave)
 							{
 								if(full_node_min.Y < WATER_LEVEL &&
@ -1602,7 +1892,7 @@ void make_block(BlockMakeData *data)
 								vmanip.m_data[i].getContent() == c_water_source ||
 								vmanip.m_data[i].getContent() == c_lava_source)
 									continue;
-								
+
 								vmanip.m_data[i] = airnode;

 								// Set tunnel flag
@ -1615,12 +1905,12 @@ void make_block(BlockMakeData *data)

 			orp = rp;
 		}
-	
+
 	}

 	}//timer1
 #endif
-	
+
 #if 1
 	{
 	// 15ms @cs=8
@ -1629,13 +1919,13 @@ void make_block(BlockMakeData *data)
 	/*
 		Add mud to the central chunk
 	*/
-	
+
 	for(s16 x=node_min.X; x<=node_max.X; x++)
 	for(s16 z=node_min.Z; z<=node_max.Z; z++)
 	{
 		// Node position in 2d
 		v2s16 p2d = v2s16(x,z);
-		
+
 		// Randomize mud amount
 		s16 mud_add_amount = get_mud_add_amount(data->seed, p2d) / 2.0 + 0.5;

@ -1660,7 +1950,7 @@ void make_block(BlockMakeData *data)
 				surface_y + mud_add_amount <= WATER_LEVEL+2){
 			addnode = MapNode(c_sand);
 		}
-		
+
 		if(bt == BT_DESERT){
 			if(surface_y > 20){
 				mud_add_amount = MYMAX(0, mud_add_amount - (surface_y - 20)/5);
@ -1691,7 +1981,7 @@ void make_block(BlockMakeData *data)
 			{
 				if(mudcount >= mud_add_amount)
 					break;
-					
+
 				MapNode &n = vmanip.m_data[i];
 				n = addnode;
 				mudcount++;
@ -1756,7 +2046,7 @@ void make_block(BlockMakeData *data)
 	/*
 		Flow mud away from steep edges
 	*/
-	
+
 	// Iterate a few times
 	for(s16 k=0; k<3; k++)
 	{
@ -1773,7 +2063,7 @@ void make_block(BlockMakeData *data)

 		// Node position in 2d
 		v2s16 p2d = v2s16(node_min.X, node_min.Z) + v2s16(x,z);
-		
+
 		v3s16 em = vmanip.m_area.getExtent();
 		u32 i = vmanip.m_area.index(v3s16(p2d.X, node_max.Y, p2d.Y));
 		s16 y=node_max.Y;
@ -1794,7 +2084,7 @@ void make_block(BlockMakeData *data)
 						n->getContent() == c_dirt_with_grass ||
 						n->getContent() == c_gravel)
 					break;
-					
+
 				vmanip.m_area.add_y(em, i, -1);
 			}

@ -1813,7 +2103,7 @@ void make_block(BlockMakeData *data)
 			{
 				// Make it exactly mud
 				n->setContent(c_dirt);
-				
+
 				/*
 					Don't flow it if the stuff under it is not mud
 				*/
@ -1851,7 +2141,7 @@ void make_block(BlockMakeData *data)
 			}

 			// Drop mud on side
-			
+
 			for(u32 di=0; di<4; di++)
 			{
 				v3s16 dirp = dirs4[di];
@ -1894,7 +2184,7 @@ void make_block(BlockMakeData *data)
 				// Loop one up so that we're in air
 				vmanip.m_area.add_y(em, i2, 1);
 				n2 = &vmanip.m_data[i2];
-				
+
 				bool old_is_water = (n->getContent() == c_water_source);
 				// Move mud to new place
 				if(!dropped_to_unknown) {
@ -1912,7 +2202,7 @@ void make_block(BlockMakeData *data)
 		}
 		}
 	}
-	
+
 	}

 	}//timer1
@ -1940,7 +2230,7 @@ void make_block(BlockMakeData *data)
 			for(s16 y=full_node_max.Y; y>=full_node_min.Y; y--)
 			{
 				if(y == full_node_max.Y){
-					water_found = 
+					water_found =
 						(vmanip.m_data[i].getContent() == c_water_source ||
 						vmanip.m_data[i].getContent() == c_lava_source);
 				}
@ -1982,7 +2272,7 @@ void make_block(BlockMakeData *data)
 	{
 		// Node position in 2d
 		v2s16 p2d = v2s16(x,z);
-		
+
 		/*
 			Find the lowest surface to which enough light ends up
 			to make grass grow.
@ -2008,7 +2298,7 @@ void make_block(BlockMakeData *data)
 			else
 				surface_y = full_node_min.Y;
 		}
-		
+
 		u32 i = vmanip.m_area.index(p2d.X, surface_y, p2d.Y);
 		MapNode *n = &vmanip.m_data[i];
 		if(n->getContent() == c_dirt){
@ -2113,7 +2403,7 @@ void make_block(BlockMakeData *data)
 					else
 						vmanip.m_data[i] = n_stone;
 				}
-			
+
 				vmanip->m_area.add_y(em, i, 1);
 			}
 		}
@ -2168,7 +2458,7 @@ void make_block(BlockMakeData *data)
 	/*
 		Add dungeons
 	*/
-	
+
 	//if(node_min.Y < approx_groundlevel)
 	//if(myrand() % 3 == 0)
 	//if(myrand() % 3 == 0 && node_min.Y < approx_groundlevel)
@ -2182,7 +2472,7 @@ void make_block(BlockMakeData *data)
 		// Dungeon generator doesn't modify places which have this set
 		vmanip->clearFlag(VMANIP_FLAG_DUNGEON_INSIDE
 				| VMANIP_FLAG_DUNGEON_PRESERVE);
-		
+
 		// Set all air and water to be untouchable to make dungeons open
 		// to caves and open air
 		for(s16 x=full_node_min.X; x<=full_node_max.X; x++)
@ -2204,12 +2494,12 @@ void make_block(BlockMakeData *data)
 				}
 			}
 		}
-		
+
 		PseudoRandom random(blockseed+2);

 		// Add it
 		make_dungeon1(vmanip, random, ndef);
-		
+
 		// Convert some cobble to mossy cobble
 		for(s16 x=full_node_min.X; x<=full_node_max.X; x++)
 		for(s16 z=full_node_min.Z; z<=full_node_max.Z; z++)
@ -2257,7 +2547,7 @@ void make_block(BlockMakeData *data)
 			make_nc(vmanip, ncrandom, ndef);
 		}
 	}
-	
+
 	/*
 		Add top and bottom side of water to transforming_liquid queue
 	*/
@ -2346,7 +2636,7 @@ void make_block(BlockMakeData *data)
 						if(current_depth == 0 && y <= WATER_LEVEL+2
 								&& possibly_have_sand)
 							have_sand = true;
-						
+
 						if(current_depth < 4)
 						{
 							if(have_sand)
@ -2384,7 +2674,7 @@ void make_block(BlockMakeData *data)
 		/*
 			Calculate some stuff
 		*/
-		
+
 		float surface_humidity = surface_humidity_2d(data->seed, p2d_center);
 		bool is_jungle = surface_humidity > 0.75;
 		// Amount of trees
@ -2521,7 +2811,7 @@ void make_block(BlockMakeData *data)
 		/*
 			Add some kind of random stones
 		*/
-		
+
 		u32 random_stone_count = gen_area_nodes *
 				randomstone_amount_2d(data->seed, p2d_center);
 		// Put in random places on part of division
@ -2555,7 +2845,7 @@ void make_block(BlockMakeData *data)
 		/*
 			Add larger stones
 		*/
-		
+
 		u32 large_stone_count = gen_area_nodes *
 				largestone_amount_2d(data->seed, p2d_center);
 		//u32 large_stone_count = 1;
@ -2612,7 +2902,7 @@ void make_block(BlockMakeData *data)
 						if(mineralrandom.next()%8 == 0)
 							vmanip.m_data[vi] = MapNode(c_mese);
 				}
-					
+
 			}
 		}
 		/*
@ -2742,7 +3032,7 @@ void make_block(BlockMakeData *data)

 		voxalgo::clearLightAndCollectSources(vmanip, a, bank, ndef,
 				light_sources, unlight_from);
-		
+
 		bool inexistent_top_provides_sunlight = !block_is_underground;
 		voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
 				vmanip, a, inexistent_top_provides_sunlight,
@ -2756,6 +3046,8 @@ void make_block(BlockMakeData *data)
 	}
 }

+#endif ///BIG COMMENT
+
 BlockMakeData::BlockMakeData():
 	no_op(false),
 	vmanip(NULL),
@ -2768,6 +3060,6 @@ BlockMakeData::~BlockMakeData()
 	delete vmanip;
 }

-}; // namespace mapgen
+//}; // namespace mapgen


--- a/src/mapgen.h
+++ b/src/mapgen.h
@ -22,12 +22,121 @@ with this program; if not, write to the Free Software Foundation, Inc.,

 #include "irrlichttypes_extrabloated.h"
 #include "util/container.h" // UniqueQueue
+#include "gamedef.h"
+#include "mapnode.h"
+#include "noise.h"

-struct BlockMakeData;
+class BiomeDefManager;
+class Biome;
+
+//struct BlockMakeData;
 class MapBlock;
 class ManualMapVoxelManipulator;
 class INodeDefManager;

+struct BlockMakeData {
+	bool no_op;
+	ManualMapVoxelManipulator *vmanip;
+	u64 seed;
+	v3s16 blockpos_min;
+	v3s16 blockpos_max;
+	v3s16 blockpos_requested;
+	UniqueQueue<v3s16> transforming_liquid;
+	INodeDefManager *nodedef;
+
+	BlockMakeData();
+	~BlockMakeData();
+};
+
+class Mapgen {
+public:
+	BlockMakeData *data;
+	ManualMapVoxelManipulator *vmanip;
+	INodeDefManager *ndef;
+	BiomeDefManager *biomedef;
+
+	int ystride;
+	int zstride;
+
+	v3s16 csize;
+	int seed;
+	int water_level;
+
+	Noise *noise_terrain;
+	Noise *noise_bgroup;
+	Noise *noise_heat;
+	Noise *noise_humidity;
+
+	v3s16 node_min;
+	v3s16 node_max;
+
+	float *map_terrain;
+	float *map_bgroup;
+	float *map_heat;
+	float *map_humidity;
+
+	bool generating;
+	int id;
+
+	NoiseParams *np_terrain;
+	NoiseParams *np_bgroup;
+	NoiseParams *np_heat;
+	NoiseParams *np_humidity;
+
+	//should these be broken off into a "commonly used nodes" class?
+	MapNode n_air;
+	MapNode n_water;
+	MapNode n_lava;
+
+	Mapgen(BiomeDefManager *biomedef, int mapgenid=0, u64 seed=0);
+	Mapgen(BiomeDefManager *biomedef, int mapgenid, u64 seed,
+		   NoiseParams *np_terrain, NoiseParams *np_bgroup,
+		   NoiseParams *np_heat,    NoiseParams *np_humidity);
+	void initMapgen(BiomeDefManager *biomedef, int mapgenid, u64 seed,
+			   NoiseParams *np_terrain, NoiseParams *np_bgroup,
+			   NoiseParams *np_heat,    NoiseParams *np_humidity);
+	~Mapgen();
+
+	void makeChunk(BlockMakeData *data);
+	void updateLiquid(v3s16 node_min, v3s16 node_max);
+	void updateLighting(v3s16 node_min, v3s16 node_max);
+
+	//Legacy functions for Farmesh (pending removal)
+	static bool get_have_beach(u64 seed, v2s16 p2d);
+	static double tree_amount_2d(u64 seed, v2s16 p);
+	static s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision);
+};
+
+class EmergeManager {
+public:
+	//settings
+	u64 seed;
+	int water_level;
+	NoiseParams *np_terrain;
+	NoiseParams *np_bgroup;
+	NoiseParams *np_heat;
+	NoiseParams *np_humidity;
+
+	//biome manager
+	BiomeDefManager *biomedef;
+
+	//mapgen objects here
+
+	EmergeManager(IGameDef *gamedef);
+	~EmergeManager();
+	void addBlockToQueue();
+
+
+
+	//mapgen helper methods
+	Biome *getBiomeAtPoint(v3s16 p);
+	int getGroundLevelAtPoint(v2s16 p);
+	bool isBlockUnderground(v3s16 blockpos);
+	u32 getBlockSeed(v3s16 p);
+};
+
+
+/*
 namespace mapgen
 {
 	// Finds precise ground level at any position
@ -41,10 +150,9 @@ namespace mapgen

 	// Main map generation routine
 	void make_block(BlockMakeData *data);
-	
-	/*
-		These are used by FarMesh
-	*/
+
+
+	//These are used by FarMesh
 	bool get_have_beach(u64 seed, v2s16 p2d);
 	double tree_amount_2d(u64 seed, v2s16 p);

@ -64,6 +172,6 @@ namespace mapgen
 	};

 }; // namespace mapgen
-
+*/
 #endif

--- a/src/nodedef.cpp
+++ b/src/nodedef.cpp
@ -106,7 +106,7 @@ void NodeBox::deSerialize(std::istream &is)
 /*
 	TileDef
 */
-	
+
 void TileDef::serialize(std::ostream &os) const
 {
 	writeU8(os, 0); // version
@ -173,7 +173,7 @@ void ContentFeatures::reset()
 	has_after_destruct = false;
 	/*
 		Actual data
-		
+
 		NOTE: Most of this is always overridden by the default values given
 		      in builtin.lua
 	*/
@ -354,7 +354,7 @@ public:
 			ContentFeatures &f = m_content_features[i];
 			f.reset(); // Reset to defaults
 		}
-		
+
 		// Set CONTENT_AIR
 		{
 			ContentFeatures f;
@ -541,11 +541,11 @@ public:
 		bool new_style_water = g_settings->getBool("new_style_water");
 		bool new_style_leaves = g_settings->getBool("new_style_leaves");
 		bool opaque_water = g_settings->getBool("opaque_water");
-		
+
 		for(u16 i=0; i<=MAX_CONTENT; i++)
 		{
 			ContentFeatures *f = &m_content_features[i];
-			
+
 			// Figure out the actual tiles to use
 			TileDef tiledef[6];
 			for(u32 j=0; j<6; j++)
--- a/src/noise.cpp
+++ b/src/noise.cpp
@ -21,89 +21,116 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "noise.h"
 #include <iostream>
 #include "debug.h"
+#include "util/numeric.h"

-#define NOISE_MAGIC_X 1619
-#define NOISE_MAGIC_Y 31337
-#define NOISE_MAGIC_Z 52591
+#define NOISE_MAGIC_X    1619
+#define NOISE_MAGIC_Y    31337
+#define NOISE_MAGIC_Z    52591
 #define NOISE_MAGIC_SEED 1013

-double cos_lookup[16] = {
-	1.0,0.9238,0.7071,0.3826,0,-0.3826,-0.7071,-0.9238,
-	1.0,-0.9238,-0.7071,-0.3826,0,0.3826,0.7071,0.9238
+float cos_lookup[16] = {
+	1.0,  0.9238,  0.7071,  0.3826, 0, -0.3826, -0.7071, -0.9238,
+	1.0, -0.9238, -0.7071, -0.3826, 0,  0.3826,  0.7071,  0.9238
 };

-double dotProduct(double vx, double vy, double wx, double wy){
-    return vx*wx+vy*wy;
-}
- 
-double easeCurve(double t){
-    return t * t * t * (6. * t * t - 15. * t + 10.);
-}
- 
-double linearInterpolation(double x0, double x1, double t){
-    return x0+(x1-x0)*t;
-}
- 
-double biLinearInterpolation(double x0y0, double x1y0, double x0y1, double x1y1, double x, double y){
-    double tx = easeCurve(x);
-    double ty = easeCurve(y);
-	/*double tx = x;
-	double ty = y;*/
-    double u = linearInterpolation(x0y0,x1y0,tx);
-    double v = linearInterpolation(x0y1,x1y1,tx);
-    return linearInterpolation(u,v,ty);
-}

-double triLinearInterpolation(
-		double v000, double v100, double v010, double v110,
-		double v001, double v101, double v011, double v111,
-		double x, double y, double z)
-{
-    /*double tx = easeCurve(x);
-    double ty = easeCurve(y);
-    double tz = easeCurve(z);*/
-    double tx = x;
-    double ty = y;
-    double tz = z;
-	return(
-		v000*(1-tx)*(1-ty)*(1-tz) +
-		v100*tx*(1-ty)*(1-tz) +
-		v010*(1-tx)*ty*(1-tz) +
-		v110*tx*ty*(1-tz) +
-		v001*(1-tx)*(1-ty)*tz +
-		v101*tx*(1-ty)*tz +
-		v011*(1-tx)*ty*tz +
-		v111*tx*ty*tz
-	);
-}
+///////////////////////////////////////////////////////////////////////////////

-double noise2d(int x, int y, int seed)
-{
+
+//noise poly:  p(n) = 60493n^3 + 19990303n + 137612589
+float noise2d(int x, int y, int seed) {
 	int n = (NOISE_MAGIC_X * x + NOISE_MAGIC_Y * y
 			+ NOISE_MAGIC_SEED * seed) & 0x7fffffff;
-	n = (n>>13)^n;
-	n = (n * (n*n*60493+19990303) + 1376312589) & 0x7fffffff;
-	return 1.0 - (double)n/1073741824;
+	n = (n >> 13) ^ n;
+	n = (n * (n * n * 60493 + 19990303) + 1376312589) & 0x7fffffff;
+	return 1.f - (float)n / 0x40000000;
 }

-double noise3d(int x, int y, int z, int seed)
-{
+
+float noise3d(int x, int y, int z, int seed) {
 	int n = (NOISE_MAGIC_X * x + NOISE_MAGIC_Y * y + NOISE_MAGIC_Z * z
 			+ NOISE_MAGIC_SEED * seed) & 0x7fffffff;
-	n = (n>>13)^n;
-	n = (n * (n*n*60493+19990303) + 1376312589) & 0x7fffffff;
-	return 1.0 - (double)n/1073741824;
+	n = (n >> 13) ^ n;
+	n = (n * (n * n * 60493 + 19990303) + 1376312589) & 0x7fffffff;
+	return 1.f - (float)n / 0x40000000;
 }

+
+float dotProduct(float vx, float vy, float wx, float wy) {
+	return vx * wx + vy * wy;
+}
+
+
+inline float linearInterpolation(float v0, float v1, float t) {
+    return v0 + (v1 - v0) * t;
+}
+
+
+float biLinearInterpolation(float v00, float v10,
+							float v01, float v11,
+							float x, float y) {
+    float tx = easeCurve(x);
+    float ty = easeCurve(y);
+    float u = linearInterpolation(v00, v10, tx);
+    float v = linearInterpolation(v01, v11, tx);
+    return linearInterpolation(u, v, ty);
+}
+
+
+float biLinearInterpolationNoEase(float x0y0, float x1y0,
+								  float x0y1, float x1y1,
+								  float x, float y) {
+    float u = linearInterpolation(x0y0, x1y0, x);
+    float v = linearInterpolation(x0y1, x1y1, x);
+    return linearInterpolation(u, v, y);
+}
+
+
+float triLinearInterpolation(
+		float v000, float v100, float v010, float v110,
+		float v001, float v101, float v011, float v111,
+		float x, float y, float z) {
+	float u = biLinearInterpolationNoEase(v000, v100, v010, v110, x, y);
+	float v = biLinearInterpolationNoEase(v001, v101, v011, v111, x, y);
+	return linearInterpolation(u, v, z);
+}
+
+
 #if 0
-double noise2d_gradient(double x, double y, int seed)
+float triLinearInterpolation(
+		float v000, float v100, float v010, float v110,
+		float v001, float v101, float v011, float v111,
+		float x, float y, float z)
+{
+	/*float tx = easeCurve(x);
+	float ty = easeCurve(y);
+	float tz = easeCurve(z);*/
+	float tx = x;
+	float ty = y;
+	float tz = z;
+	return(
+		v000 * (1 - tx) * (1 - ty) * (1 - tz) +
+		v100 * tx * (1 - ty) * (1 - tz) +
+		v010 * (1 - tx) * ty * (1 - tz) +
+		v110 * tx * ty * (1 - tz) +
+		v001 * (1 - tx) * (1 - ty) * tz +
+		v101 * tx * (1 - ty) * tz +
+		v011 * (1 - tx) * ty * tz +
+		v111 * tx * ty * tz
+	);
+}
+#endif
+
+
+#if 0
+float noise2d_gradient(float x, float y, int seed)
 {
 	// Calculate the integer coordinates
 	int x0 = (x > 0.0 ? (int)x : (int)x - 1);
 	int y0 = (y > 0.0 ? (int)y : (int)y - 1);
 	// Calculate the remaining part of the coordinates
-	double xl = x - (double)x0;
-	double yl = y - (double)y0;
+	float xl = x - (float)x0;
+	float yl = y - (float)y0;
 	// Calculate random cosine lookup table indices for the integer corners.
 	// They are looked up as unit vector gradients from the lookup table.
 	int n00 = (int)((noise2d(x0, y0, seed)+1)*8);
@ -111,119 +138,126 @@ double noise2d_gradient(double x, double y, int seed)
 	int n01 = (int)((noise2d(x0, y0+1, seed)+1)*8);
 	int n11 = (int)((noise2d(x0+1, y0+1, seed)+1)*8);
 	// Make a dot product for the gradients and the positions, to get the values
-	double s = dotProduct(cos_lookup[n00], cos_lookup[(n00+12)%16], xl, yl);
-	double u = dotProduct(-cos_lookup[n10], cos_lookup[(n10+12)%16], 1.-xl, yl);
-	double v = dotProduct(cos_lookup[n01], -cos_lookup[(n01+12)%16], xl, 1.-yl);
-	double w = dotProduct(-cos_lookup[n11], -cos_lookup[(n11+12)%16], 1.-xl, 1.-yl);
+	float s = dotProduct(cos_lookup[n00], cos_lookup[(n00+12)%16], xl, yl);
+	float u = dotProduct(-cos_lookup[n10], cos_lookup[(n10+12)%16], 1.-xl, yl);
+	float v = dotProduct(cos_lookup[n01], -cos_lookup[(n01+12)%16], xl, 1.-yl);
+	float w = dotProduct(-cos_lookup[n11], -cos_lookup[(n11+12)%16], 1.-xl, 1.-yl);
 	// Interpolate between the values
 	return biLinearInterpolation(s,u,v,w,xl,yl);
 }
 #endif

-#if 1
-double noise2d_gradient(double x, double y, int seed)
+
+float noise2d_gradient(float x, float y, int seed)
 {
 	// Calculate the integer coordinates
-	int x0 = (x > 0.0 ? (int)x : (int)x - 1);
-	int y0 = (y > 0.0 ? (int)y : (int)y - 1);
+	int x0 = myfloor(x);
+	int y0 = myfloor(y);
 	// Calculate the remaining part of the coordinates
-	double xl = x - (double)x0;
-	double yl = y - (double)y0;
-	// Get values for corners of cube
-	double v00 = noise2d(x0, y0, seed);
-	double v10 = noise2d(x0+1, y0, seed);
-	double v01 = noise2d(x0, y0+1, seed);
-	double v11 = noise2d(x0+1, y0+1, seed);
+	float xl = x - (float)x0;
+	float yl = y - (float)y0;
+	// Get values for corners of square
+	float v00 = noise2d(x0, y0, seed);
+	float v10 = noise2d(x0+1, y0, seed);
+	float v01 = noise2d(x0, y0+1, seed);
+	float v11 = noise2d(x0+1, y0+1, seed);
 	// Interpolate
 	return biLinearInterpolation(v00,v10,v01,v11,xl,yl);
 }
-#endif

-double noise3d_gradient(double x, double y, double z, int seed)
+
+float noise3d_gradient(float x, float y, float z, int seed)
 {
 	// Calculate the integer coordinates
-	int x0 = (x > 0.0 ? (int)x : (int)x - 1);
-	int y0 = (y > 0.0 ? (int)y : (int)y - 1);
-	int z0 = (z > 0.0 ? (int)z : (int)z - 1);
+	int x0 = myfloor(x);
+	int y0 = myfloor(y);
+	int z0 = myfloor(z);
 	// Calculate the remaining part of the coordinates
-	double xl = x - (double)x0;
-	double yl = y - (double)y0;
-	double zl = z - (double)z0;
+	float xl = x - (float)x0;
+	float yl = y - (float)y0;
+	float zl = z - (float)z0;
 	// Get values for corners of cube
-	double v000 = noise3d(x0, y0, z0, seed);
-	double v100 = noise3d(x0+1, y0, z0, seed);
-	double v010 = noise3d(x0, y0+1, z0, seed);
-	double v110 = noise3d(x0+1, y0+1, z0, seed);
-	double v001 = noise3d(x0, y0, z0+1, seed);
-	double v101 = noise3d(x0+1, y0, z0+1, seed);
-	double v011 = noise3d(x0, y0+1, z0+1, seed);
-	double v111 = noise3d(x0+1, y0+1, z0+1, seed);
+	float v000 = noise3d(x0,     y0,     z0,     seed);
+	float v100 = noise3d(x0 + 1, y0,     z0,     seed);
+	float v010 = noise3d(x0,     y0 + 1, z0,     seed);
+	float v110 = noise3d(x0 + 1, y0 + 1, z0,     seed);
+	float v001 = noise3d(x0,     y0,     z0 + 1, seed);
+	float v101 = noise3d(x0 + 1, y0,     z0 + 1, seed);
+	float v011 = noise3d(x0,     y0 + 1, z0 + 1, seed);
+	float v111 = noise3d(x0 + 1, y0 + 1, z0 + 1, seed);
 	// Interpolate
-	return triLinearInterpolation(v000,v100,v010,v110,v001,v101,v011,v111,xl,yl,zl);
+	return triLinearInterpolation(v000, v100, v010, v110,
+								  v001, v101, v011, v111,
+								  xl, yl, zl);
 }

-double noise2d_perlin(double x, double y, int seed,
-		int octaves, double persistence)
+
+float noise2d_perlin(float x, float y, int seed,
+		int octaves, float persistence)
 {
-	double a = 0;
-	double f = 1.0;
-	double g = 1.0;
-	for(int i=0; i<octaves; i++)
+	float a = 0;
+	float f = 1.0;
+	float g = 1.0;
+	for (int i = 0; i < octaves; i++)
 	{
-		a += g * noise2d_gradient(x*f, y*f, seed+i);
+		a += g * noise2d_gradient(x * f, y * f, seed + i);
 		f *= 2.0;
 		g *= persistence;
 	}
 	return a;
 }

-double noise2d_perlin_abs(double x, double y, int seed,
-		int octaves, double persistence)
+
+float noise2d_perlin_abs(float x, float y, int seed,
+		int octaves, float persistence)
 {
-	double a = 0;
-	double f = 1.0;
-	double g = 1.0;
-	for(int i=0; i<octaves; i++)
+	float a = 0;
+	float f = 1.0;
+	float g = 1.0;
+	for (int i = 0; i < octaves; i++)
 	{
-		a += g * fabs(noise2d_gradient(x*f, y*f, seed+i));
+		a += g * fabs(noise2d_gradient(x * f, y * f, seed + i));
 		f *= 2.0;
 		g *= persistence;
 	}
 	return a;
 }

-double noise3d_perlin(double x, double y, double z, int seed,
-		int octaves, double persistence)
+
+float noise3d_perlin(float x, float y, float z, int seed,
+		int octaves, float persistence)
 {
-	double a = 0;
-	double f = 1.0;
-	double g = 1.0;
-	for(int i=0; i<octaves; i++)
+	float a = 0;
+	float f = 1.0;
+	float g = 1.0;
+	for (int i = 0; i < octaves; i++)
 	{
-		a += g * noise3d_gradient(x*f, y*f, z*f, seed+i);
+		a += g * noise3d_gradient(x * f, y * f, z * f, seed + i);
 		f *= 2.0;
 		g *= persistence;
 	}
 	return a;
 }

-double noise3d_perlin_abs(double x, double y, double z, int seed,
-		int octaves, double persistence)
+
+float noise3d_perlin_abs(float x, float y, float z, int seed,
+		int octaves, float persistence)
 {
-	double a = 0;
-	double f = 1.0;
-	double g = 1.0;
-	for(int i=0; i<octaves; i++)
+	float a = 0;
+	float f = 1.0;
+	float g = 1.0;
+	for (int i = 0; i < octaves; i++)
 	{
-		a += g * fabs(noise3d_gradient(x*f, y*f, z*f, seed+i));
+		a += g * fabs(noise3d_gradient(x * f, y * f, z * f, seed + i));
 		f *= 2.0;
 		g *= persistence;
 	}
 	return a;
 }

+
 // -1->0, 0->1, 1->0
-double contour(double v)
+float contour(float v)
 {
 	v = fabs(v);
 	if(v >= 1.0)
@ -231,195 +265,276 @@ double contour(double v)
 	return (1.0-v);
 }

-double noise3d_param(const NoiseParams &param, double x, double y, double z)
-{
-	double s = param.pos_scale;
-	x /= s;
-	y /= s;
-	z /= s;

-	if(param.type == NOISE_CONSTANT_ONE)
-	{
-		return 1.0;
-	}
-	else if(param.type == NOISE_PERLIN)
-	{
-		return param.noise_scale*noise3d_perlin(x,y,z, param.seed,
-				param.octaves,
-				param.persistence);
-	}
-	else if(param.type == NOISE_PERLIN_ABS)
-	{
-		return param.noise_scale*noise3d_perlin_abs(x,y,z, param.seed,
-				param.octaves,
-				param.persistence);
-	}
-	else if(param.type == NOISE_PERLIN_CONTOUR)
-	{
-		return contour(param.noise_scale*noise3d_perlin(x,y,z,
-				param.seed, param.octaves,
-				param.persistence));
-	}
-	else if(param.type == NOISE_PERLIN_CONTOUR_FLIP_YZ)
-	{
-		return contour(param.noise_scale*noise3d_perlin(x,z,y,
-				param.seed, param.octaves,
-				param.persistence));
-	}
-	else assert(0);
+///////////////////////// [ New perlin stuff ] ////////////////////////////
+
+
+Noise::Noise(NoiseParams *np, int seed, int sx, int sy) {
+	int nlx, nly;
+	float ofactor;
+
+	//maximum possible spread value factor
+	ofactor = (float)(1 << (np->octaves - 1));
+
+	//noise lattice point count
+	//(int)(sz * spread * ofactor) is # of lattice points crossed due to length
+	// + 2 for the two initial endpoints
+	// + 1 for potentially crossing a boundary due to offset
+	nlx = (int)(sx * ofactor / np->spread.X) + 3;
+	nly = (int)(sy * ofactor / np->spread.Y) + 3;
+
+	this->np   = np;
+	this->seed = seed;
+	this->sx   = sx;
+	this->sy   = sy;
+	this->sz   = 0;
+	this->noisebuf = new float[nlx * nly];
+	this->buf      = new float[sx * sy];
+	this->result   = new float[sx * sy];
 }

+
+Noise::Noise(NoiseParams *np, int seed, int sx, int sy, int sz) {
+	int nlx, nly, nlz;
+	float ofactor;
+
+	ofactor = (float)(1 << (np->octaves - 1));
+	nlx = (int)(sx * ofactor / np->spread.X) + 3;
+	nly = (int)(sy * ofactor / np->spread.Y) + 3;
+	nlz = (int)(sz * ofactor / np->spread.Z) + 3;
+
+	this->np   = np;
+	this->seed = seed;
+	this->sx   = sx;
+	this->sy   = sy;
+	this->sz   = sz;
+	this->noisebuf = new float[nlx * nly * nlz];
+	this->buf      = new float[sx * sy * sz];
+	this->result   = new float[sx * sy * sz];
+}
+
+
+Noise::~Noise() {
+	delete[] buf;
+	delete[] result;
+	delete[] noisebuf;
+}
+
+
 /*
-	NoiseBuffer
-*/
+ * NB:  This algorithm is not optimal in terms of space complexity.  The entire
+ * integer lattice of noise points could be done as 2 lines instead, and for 3D,
+ * 2 lines + 2 planes.
+ * However, this would require the noise calls to be interposed with the
+ * interpolation loops, which may trash the icache, leading to lower overall
+ * performance.
+ * Another optimization that could save half as many noise calls is to carry over
+ * values from the previous noise lattice as midpoints in the new lattice for the
+ * next octave.
+ */
+void Noise::gradientMap2D(float x, float y, float step_x, float step_y, int seed) {
+	float v00, v01, v10, v11, u, v, orig_u;
+	int index, i, j, x0, y0, noisex, noisey;
+	int nlx, nly;

-NoiseBuffer::NoiseBuffer():
-	m_data(NULL)
-{
-}
+	x0 = floor(x);
+	y0 = floor(y);
+	u = x - (float)x0;
+	v = y - (float)y0;
+	orig_u = u;

-NoiseBuffer::~NoiseBuffer()
-{
-	clear();
-}
+	//calculate noise point lattice

-void NoiseBuffer::clear()
-{
-	if(m_data)
-		delete[] m_data;
-	m_data = NULL;
-	m_size_x = 0;
-	m_size_y = 0;
-	m_size_z = 0;
-}
+	nlx = (int)(u + sx * step_x) + 2;
+	nly = (int)(v + sy * step_y) + 2;
+	index = 0;
+	for (j = 0; j != nly; j++)
+		for (i = 0; i != nlx; i++)
+			noisebuf[index++] = noise2d(x0 + i, y0 + j, seed);

-void NoiseBuffer::create(const NoiseParams &param,
-		double first_x, double first_y, double first_z,
-		double last_x, double last_y, double last_z,
-		double samplelength_x, double samplelength_y, double samplelength_z)
-{
-	clear();
-	
-	m_start_x = first_x - samplelength_x;
-	m_start_y = first_y - samplelength_y;
-	m_start_z = first_z - samplelength_z;
-	m_samplelength_x = samplelength_x;
-	m_samplelength_y = samplelength_y;
-	m_samplelength_z = samplelength_z;
+	//calculate interpolations
+	noisey = 0;
+	for (j = 0; j != sy; j++) {
+		v00 = noisebuf[noisey * nlx];
+		v10 = noisebuf[noisey * nlx + 1];
+		v01 = noisebuf[(noisey + 1) * nlx];
+		v11 = noisebuf[(noisey + 1) * nlx + 1];

-	m_size_x = (last_x - m_start_x)/samplelength_x + 2;
-	m_size_y = (last_y - m_start_y)/samplelength_y + 2;
-	m_size_z = (last_z - m_start_z)/samplelength_z + 2;
+		u = orig_u;
+		noisex = 0;
+		for (i = 0; i != sx; i++) {
+			buf[j * sx + i] = biLinearInterpolation(v00, v10, v01, v11, u, v);
+			u += step_x;
+			if (u >= 1.0) {
+				u -= 1.0;
+				noisex++;
+				v00 = v10;
+				v01 = v11;
+				v10 = noisebuf[noisey * nlx + noisex + 1];
+				v11 = noisebuf[(noisey + 1) * nlx + noisex + 1];
+			}
+		}

-	m_data = new double[m_size_x*m_size_y*m_size_z];
-
-	for(int x=0; x<m_size_x; x++)
-	for(int y=0; y<m_size_y; y++)
-	for(int z=0; z<m_size_z; z++)
-	{
-		double xd = (m_start_x + (double)x*m_samplelength_x);
-		double yd = (m_start_y + (double)y*m_samplelength_y);
-		double zd = (m_start_z + (double)z*m_samplelength_z);
-		double a = noise3d_param(param, xd,yd,zd);
-		intSet(x,y,z, a);
+		v += step_y;
+		if (v >= 1.0) {
+			v -= 1.0;
+			noisey++;
+		}
 	}
 }

-void NoiseBuffer::multiply(const NoiseParams &param)
-{
-	assert(m_data != NULL);

-	for(int x=0; x<m_size_x; x++)
-	for(int y=0; y<m_size_y; y++)
-	for(int z=0; z<m_size_z; z++)
-	{
-		double xd = (m_start_x + (double)x*m_samplelength_x);
-		double yd = (m_start_y + (double)y*m_samplelength_y);
-		double zd = (m_start_z + (double)z*m_samplelength_z);
-		double a = noise3d_param(param, xd,yd,zd);
-		intMultiply(x,y,z, a);
+void Noise::gradientMap3D(float x, float y, float z,
+						  float step_x, float step_y, float step_z,
+						  int seed) {
+	float v000, v010, v100, v110;
+	float v001, v011, v101, v111;
+	float u, v, w, orig_u, orig_w;
+	int index, i, j, k, x0, y0, z0, noisex, noisey, noisez;
+	int nlx, nly, nlz;
+
+	x0 = floor(x);
+	y0 = floor(y);
+	z0 = floor(z);
+	u = x - (float)x0;
+	v = y - (float)y0;
+	w = z - (float)z0;
+	orig_u = u;
+	orig_w = w;
+
+	//calculate noise point lattice
+	nlx = (int)(u + sx * step_x) + 2;
+	nly = (int)(v + sy * step_y) + 2;
+	nlz = (int)(v + sy * step_z) + 2;
+	index = 0;
+	for (k = 0; k != nlz; k++)
+		for (j = 0; j != nly; j++)
+			for (i = 0; i != nlx; i++)
+				noisebuf[index++] = noise3d(x0 + i, y0 + j, z0 + k, seed);
+
+#define index(x, y, z) ((z) * nly * nlx + (y) * nlx + (x))
+
+	//calculate interpolations
+	noisey = 0;
+	noisez = 0;
+	for (k = 0; k != sz; k++) {
+		v000 = noisebuf[index(0, noisey,     noisez)];
+		v100 = noisebuf[index(1, noisey,     noisez)];
+		v010 = noisebuf[index(0, noisey + 1, noisez)];
+		v110 = noisebuf[index(1, noisey + 1, noisez)];
+		v001 = noisebuf[index(0, noisey,     noisez + 1)];
+		v101 = noisebuf[index(1, noisey,     noisez + 1)];
+		v011 = noisebuf[index(0, noisey + 1, noisez + 1)];
+		v111 = noisebuf[index(1, noisey + 1, noisez + 1)];
+
+		w = orig_w;
+		noisey = 0;
+		for (j = 0; j != sy; j++) {
+			v000 = noisebuf[index(0, noisey,     noisez)];
+			v100 = noisebuf[index(1, noisey,     noisez)];
+			v010 = noisebuf[index(0, noisey + 1, noisez)];
+			v110 = noisebuf[index(1, noisey + 1, noisez)];
+			v001 = noisebuf[index(0, noisey,     noisez + 1)];
+			v101 = noisebuf[index(1, noisey,     noisez + 1)];
+			v011 = noisebuf[index(0, noisey + 1, noisez + 1)];
+			v111 = noisebuf[index(1, noisey + 1, noisez + 1)];
+
+			u = orig_u;
+			noisex = 0;
+			for (i = 0; i != sx; i++) {
+				buf[j * sx + i] = triLinearInterpolation(
+									v000, v100, v010, v110,
+									v001, v101, v011, v111,
+									u, v, w);
+				u += step_x;
+				if (u >= 1.0) {
+					u -= 1.0;
+					noisex++;
+					v000 = v100;
+					v010 = v110;
+					v100 = noisebuf[index(noisex + 1, noisey,     noisez)];
+					v110 = noisebuf[index(noisex + 1, noisey + 1, noisez)];
+					v001 = v101;
+					v011 = v111;
+					v101 = noisebuf[index(noisex + 1, noisey,     noisez + 1)];
+					v111 = noisebuf[index(noisex + 1, noisey + 1, noisez + 1)];
+				}
+			}
+
+			v += step_y;
+			if (v >= 1.0) {
+				v -= 1.0;
+				noisey++;
+			}
+		}
+
+		w += step_z;
+		if (w >= 1.0) {
+			w -= 1.0;
+			noisez++;
+		}
 	}
 }

-// Deprecated
-void NoiseBuffer::create(int seed, int octaves, double persistence,
-		bool abs,
-		double first_x, double first_y, double first_z,
-		double last_x, double last_y, double last_z,
-		double samplelength_x, double samplelength_y, double samplelength_z)
-{
-	NoiseParams param;
-	param.type = abs ? NOISE_PERLIN_ABS : NOISE_PERLIN;
-	param.seed = seed;
-	param.octaves = octaves;
-	param.persistence = persistence;

-	create(param, first_x, first_y, first_z,
-			last_x, last_y, last_z,
-			samplelength_x, samplelength_y, samplelength_z);
+float *Noise::perlinMap2D(float x, float y) {
+	float a = 0.0, f = 1.0, g = 1.0;
+	int i, j, index, oct;
+
+	x /= np->spread.X;
+	y /= np->spread.Y;
+
+	memset(result, 0, sizeof(float) * sx * sy);
+
+	for (oct = 0; oct < np->octaves; oct++) {
+		gradientMap2D(x * f, y * f,
+			f / np->spread.X, f / np->spread.Y,
+			seed + np->seed + oct);
+
+		index = 0;
+		for (j = 0; j != sy; j++) {
+			for (i = 0; i != sx; i++) {
+				result[index] += g * buf[index];
+				index++;
+			}
+		}
+
+		f *= 2.0;
+		g *= np->persist;
+	}
+
+	return result;
 }

-void NoiseBuffer::intSet(int x, int y, int z, double d)
-{
-	int i = m_size_x*m_size_y*z + m_size_x*y + x;
-	assert(i >= 0);
-	assert(i < m_size_x*m_size_y*m_size_z);
-	m_data[i] = d;
+
+float *Noise::perlinMap3D(float x, float y, float z) {
+	float a = 0.0, f = 1.0, g = 1.0;
+	int i, j, k, index, oct;
+
+	x /= np->spread.X;
+	y /= np->spread.Y;
+	z /= np->spread.Z;
+
+	memset(result, 0, sizeof(float) * sx * sy * sz);
+
+	for (oct = 0; oct < np->octaves; oct++) {
+		gradientMap3D(x * f, y * f, z * f,
+			f / np->spread.X, f / np->spread.Y, f / np->spread.Z,
+			seed + np->seed + oct);
+
+		index = 0;
+		for (k = 0; k != sz; k++) {
+			for (j = 0; j != sy; j++) {
+				for (i = 0; i != sx; i++) {
+					result[index] += g * buf[index];
+					index++;
+				}
+			}
+		}
+
+		f *= 2.0;
+		g *= np->persist;
+	}
+
+	return result;
 }
-
-void NoiseBuffer::intMultiply(int x, int y, int z, double d)
-{
-	int i = m_size_x*m_size_y*z + m_size_x*y + x;
-	assert(i >= 0);
-	assert(i < m_size_x*m_size_y*m_size_z);
-	m_data[i] = m_data[i] * d;
-}
-
-double NoiseBuffer::intGet(int x, int y, int z)
-{
-	int i = m_size_x*m_size_y*z + m_size_x*y + x;
-	assert(i >= 0);
-	assert(i < m_size_x*m_size_y*m_size_z);
-	return m_data[i];
-}
-
-double NoiseBuffer::get(double x, double y, double z)
-{
-	x -= m_start_x;
-	y -= m_start_y;
-	z -= m_start_z;
-	x /= m_samplelength_x;
-	y /= m_samplelength_y;
-	z /= m_samplelength_z;
-	// Calculate the integer coordinates
-	int x0 = (x > 0.0 ? (int)x : (int)x - 1);
-	int y0 = (y > 0.0 ? (int)y : (int)y - 1);
-	int z0 = (z > 0.0 ? (int)z : (int)z - 1);
-	// Calculate the remaining part of the coordinates
-	double xl = x - (double)x0;
-	double yl = y - (double)y0;
-	double zl = z - (double)z0;
-	// Get values for corners of cube
-	double v000 = intGet(x0,   y0,   z0);
-	double v100 = intGet(x0+1, y0,   z0);
-	double v010 = intGet(x0,   y0+1, z0);
-	double v110 = intGet(x0+1, y0+1, z0);
-	double v001 = intGet(x0,   y0,   z0+1);
-	double v101 = intGet(x0+1, y0,   z0+1);
-	double v011 = intGet(x0,   y0+1, z0+1);
-	double v111 = intGet(x0+1, y0+1, z0+1);
-	// Interpolate
-	return triLinearInterpolation(v000,v100,v010,v110,v001,v101,v011,v111,xl,yl,zl);
-}
-
-/*bool NoiseBuffer::contains(double x, double y, double z)
-{
-	x -= m_start_x;
-	y -= m_start_y;
-	z -= m_start_z;
-	x /= m_samplelength_x;
-	y /= m_samplelength_y;
-	z /= m_samplelength_z;
-	if(x <= 0.0 || x >= m_size_x)
-}*/
-
--- a/src/noise.h
+++ b/src/noise.h
@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define NOISE_HEADER

 #include "debug.h"
+#include "irr_v3d.h"

 class PseudoRandom
 {
@ -59,91 +60,69 @@ private:
 	int m_next;
 };

-double easeCurve(double t);
- 
-// Return value: -1 ... 1
-double noise2d(int x, int y, int seed);
-double noise3d(int x, int y, int z, int seed);
-
-double noise2d_gradient(double x, double y, int seed);
-double noise3d_gradient(double x, double y, double z, int seed);
-
-double noise2d_perlin(double x, double y, int seed,
-		int octaves, double persistence);
-
-double noise2d_perlin_abs(double x, double y, int seed,
-		int octaves, double persistence);
-
-double noise3d_perlin(double x, double y, double z, int seed,
-		int octaves, double persistence);
-
-double noise3d_perlin_abs(double x, double y, double z, int seed,
-		int octaves, double persistence);
-
-enum NoiseType
-{
-	NOISE_CONSTANT_ONE,
-	NOISE_PERLIN,
-	NOISE_PERLIN_ABS,
-	NOISE_PERLIN_CONTOUR,
-	NOISE_PERLIN_CONTOUR_FLIP_YZ,
-};
-
-struct NoiseParams
-{
-	NoiseType type;
+struct NoiseParams {
+	float offset;
+	float scale;
+	v3f spread;
 	int seed;
 	int octaves;
-	double persistence;
-	double pos_scale;
-	double noise_scale; // Useful for contour noises
-	
-	NoiseParams(NoiseType type_=NOISE_PERLIN, int seed_=0,
-			int octaves_=3, double persistence_=0.5,
-			double pos_scale_=100.0, double noise_scale_=1.0):
-		type(type_),
-		seed(seed_),
-		octaves(octaves_),
-		persistence(persistence_),
-		pos_scale(pos_scale_),
-		noise_scale(noise_scale_)
-	{
-	}
+	float persist;
 };

-double noise3d_param(const NoiseParams &param, double x, double y, double z);

-class NoiseBuffer
-{
+class Noise {
 public:
-	NoiseBuffer();
-	~NoiseBuffer();
-	
-	void clear();
-	void create(const NoiseParams &param,
-			double first_x, double first_y, double first_z,
-			double last_x, double last_y, double last_z,
-			double samplelength_x, double samplelength_y, double samplelength_z);
-	void multiply(const NoiseParams &param);
-	// Deprecated
-	void create(int seed, int octaves, double persistence,
-			bool abs,
-			double first_x, double first_y, double first_z,
-			double last_x, double last_y, double last_z,
-			double samplelength_x, double samplelength_y, double samplelength_z);
+	NoiseParams *np;
+	int seed;
+	int sx;
+	int sy;
+	int sz;
+	float *noisebuf;
+	float *buf;
+	float *result;

-	void intSet(int x, int y, int z, double d);
-	void intMultiply(int x, int y, int z, double d);
-	double intGet(int x, int y, int z);
-	double get(double x, double y, double z);
-	//bool contains(double x, double y, double z);
+	Noise(NoiseParams *np, int seed, int sx, int sy);
+	Noise(NoiseParams *np, int seed, int sx, int sy, int sz);
+	~Noise();

-private:
-	double *m_data;
-	double m_start_x, m_start_y, m_start_z;
-	double m_samplelength_x, m_samplelength_y, m_samplelength_z;
-	int m_size_x, m_size_y, m_size_z;
+	void gradientMap2D(
+		float x, float y,
+		float step_x, float step_y,
+		int seed);
+	void gradientMap3D(
+		float x, float y, float z,
+		float step_x, float step_y, float step_z,
+		int seed);
+	float *perlinMap2D(float x, float y);
+	float *perlinMap3D(float x, float y, float z);
 };

+// Return value: -1 ... 1
+float noise2d(int x, int y, int seed);
+float noise3d(int x, int y, int z, int seed);
+
+float noise2d_gradient(float x, float y, int seed);
+float noise3d_gradient(float x, float y, float z, int seed);
+
+float noise2d_perlin(float x, float y, int seed,
+		int octaves, float persistence);
+
+float noise2d_perlin_abs(float x, float y, int seed,
+		int octaves, float persistence);
+
+float noise3d_perlin(float x, float y, float z, int seed,
+		int octaves, float persistence);
+
+float noise3d_perlin_abs(float x, float y, float z, int seed,
+		int octaves, float persistence);
+
+inline float easeCurve(float t) {
+	return t * t * t * (t * (6.f * t - 15.f) + 10.f);
+}
+
+#define NoisePerlin2D(np, x, y, s) ((np)->offset + (np)->scale * \
+		noise2d_perlin((float)(x) * (np)->spread.X, (float)(y) * (np)->spread.Y, \
+		(s) + (np)->seed, (np)->octaves, (np)->persist))
+
 #endif

--- a/src/scriptapi.cpp
+++ b/src/scriptapi.cpp
@ -3240,8 +3240,8 @@ class LuaPerlinNoise
 private:
 	int seed;
 	int octaves;
-	double persistence;
-	double scale;
+	float persistence;
+	float scale;
 	static const char className[];
 	static const luaL_reg methods[];

@ -3273,8 +3273,8 @@ private:
 	}

 public:
-	LuaPerlinNoise(int a_seed, int a_octaves, double a_persistence,
-			double a_scale):
+	LuaPerlinNoise(int a_seed, int a_octaves, float a_persistence,
+			float a_scale):
 		seed(a_seed),
 		octaves(a_octaves),
 		persistence(a_persistence),
@ -3292,8 +3292,8 @@ public:
 	{
 		int seed = luaL_checkint(L, 1);
 		int octaves = luaL_checkint(L, 2);
-		double persistence = luaL_checknumber(L, 3);
-		double scale = luaL_checknumber(L, 4);
+		float persistence = luaL_checknumber(L, 3);
+		float scale = luaL_checknumber(L, 4);
 		LuaPerlinNoise *o = new LuaPerlinNoise(seed, octaves, persistence, scale);
 		*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
 		luaL_getmetatable(L, className);
@ -3999,8 +3999,8 @@ private:

 		int seeddiff = luaL_checkint(L, 2);
 		int octaves = luaL_checkint(L, 3);
-		double persistence = luaL_checknumber(L, 4);
-		double scale = luaL_checknumber(L, 5);
+		float persistence = luaL_checknumber(L, 4);
+		float scale = luaL_checknumber(L, 5);

 		LuaPerlinNoise *n = new LuaPerlinNoise(seeddiff + int(env->getServerMap().getSeed()), octaves, persistence, scale);
 		*(void **)(lua_newuserdata(L, sizeof(void *))) = n;
--- a/src/server.cpp
+++ b/src/server.cpp
--- a/src/server.h
+++ b/src/server.h
@ -739,6 +739,9 @@ private:
 	bool m_rollback_sink_enabled;
 	bool m_enable_rollback_recording; // Updated once in a while

+	// Emerge manager
+	EmergeManager *m_emerge;
+
 	// Scripting
 	// Envlock and conlock should be locked when using Lua
 	lua_State *m_lua;
--- a/src/settings.h
+++ b/src/settings.h
@ -574,10 +574,7 @@ public:
 			set(name, "false");
 	}

-	void setS32(std::string name, s32 value)
-	{
-		set(name, itos(value));
-	}
+

 	void setFloat(std::string name, float value)
 	{
@ -598,6 +595,16 @@ public:
 		set(name, os.str());
 	}

+	void setS16(std::string name, s16 value)
+	{
+		set(name, itos(value));
+	}
+
+	void setS32(std::string name, s32 value)
+	{
+		set(name, itos(value));
+	}
+
 	void setU64(std::string name, u64 value)
 	{
 		std::ostringstream os;
--- a/src/util/numeric.h
+++ b/src/util/numeric.h
@ -120,6 +120,7 @@ inline s16 rangelim(s16 i, s16 max)
 }

 #define rangelim(d, min, max) ((d) < (min) ? (min) : ((d)>(max)?(max):(d)))
+#define myfloor(x) ((x) > 0.0 ? (int)(x) : (int)(x) - 1)

 inline v3s16 arealim(v3s16 p, s16 d)
 {
--- a/src/voxel.h
+++ b/src/voxel.h
@ -72,7 +72,7 @@ public:
 		MaxEdge(p)
 	{
 	}
-	
+
 	/*
 		Modifying methods
 	*/
@ -106,14 +106,14 @@ public:
 		if(p.Y > MaxEdge.Y) MaxEdge.Y = p.Y;
 		if(p.Z > MaxEdge.Z) MaxEdge.Z = p.Z;
 	}
-	
+
 	// Pad with d nodes
 	void pad(v3s16 d)
 	{
 		MinEdge -= d;
 		MaxEdge += d;
 	}
-	
+
 	/*void operator+=(v3s16 off)
 	{
 		MinEdge += off;
@ -202,7 +202,7 @@ public:
 		}

 		assert(contains(a));
-		
+
 		// Take back area, XY inclusive
 		{
 			v3s16 min(MinEdge.X, MinEdge.Y, a.MaxEdge.Z+1);
@ -258,7 +258,7 @@ public:
 		}

 	}
-	
+
 	/*
 		Translates position from virtual coordinates to array index
 	*/
@ -274,7 +274,7 @@ public:
 	{
 		return index(p.X, p.Y, p.Z);
 	}
-	
+
 	// Translate index in the X coordinate
 	void add_x(const v3s16 &extent, u32 &i, s16 a)
 	{
@ -343,7 +343,7 @@ class VoxelManipulator /*: public NodeContainer*/
 public:
 	VoxelManipulator();
 	virtual ~VoxelManipulator();
-	
+
 	/*
 		Virtuals from NodeContainer
 	*/
@ -430,7 +430,7 @@ public:
 	void setNode(v3s16 p, const MapNode &n)
 	{
 		emerge(p);
-		
+
 		m_data[m_area.index(p)] = n;
 		m_flags[m_area.index(p)] &= ~VOXELFLAG_INEXISTENT;
 		m_flags[m_area.index(p)] &= ~VOXELFLAG_NOT_LOADED;
@ -457,10 +457,10 @@ public:
 		//dstream<<"operator[] p=("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;
 		if(isValidPosition(p) == false)
 			emerge(VoxelArea(p));
-		
+
 		return m_data[m_area.index(p)];
 	}*/
-	
+
 	/*
 		Set stuff if available without an emerge.
 		Return false if failed.
@ -496,7 +496,7 @@ public:

 	void print(std::ostream &o, INodeDefManager *nodemgr,
 			VoxelPrintMode mode=VOXELPRINT_MATERIAL);
-	
+
 	void addArea(VoxelArea area);

 	/*
@ -505,7 +505,7 @@ public:
 	*/
 	void copyFrom(MapNode *src, VoxelArea src_area,
 			v3s16 from_pos, v3s16 to_pos, v3s16 size);
-	
+
 	// Copy data
 	void copyTo(MapNode *dst, VoxelArea dst_area,
 			v3s16 dst_pos, v3s16 from_pos, v3s16 size);
@ -523,15 +523,15 @@ public:
 	void unspreadLight(enum LightBank bank,
 			core::map<v3s16, u8> & from_nodes,
 			core::map<v3s16, bool> & light_sources, INodeDefManager *nodemgr);
-	
+
 	void spreadLight(enum LightBank bank, v3s16 p, INodeDefManager *nodemgr);
 	void spreadLight(enum LightBank bank,
 			core::map<v3s16, bool> & from_nodes, INodeDefManager *nodemgr);
-	
+
 	/*
 		Virtual functions
 	*/
-	
+
 	/*
 		Get the contents of the requested area from somewhere.
 		Shall touch only nodes that have VOXELFLAG_NOT_LOADED
@ -565,7 +565,7 @@ public:
 		MaxEdge is 1 higher than maximum allowed position
 	*/
 	VoxelArea m_area;
-	
+
 	/*
 		NULL if data size is 0 (extent (0,0,0))
 		Data is stored as [z*h*w + y*h + x]
@ -576,7 +576,7 @@ public:
 		Flags of all nodes
 	*/
 	u8 *m_flags;
-	
+
 	//TODO: Use these or remove them
 	//TODO: Would these make any speed improvement?
 	//bool m_pressure_route_valid;
--- a/src/voxelalgorithms.cpp
+++ b/src/voxelalgorithms.cpp
@ -86,10 +86,10 @@ SunlightPropagateResult propagateSunlight(VoxelManipulator &v, VoxelArea a,
 	required_a.pad(v3s16(0,1,0));
 	// Make sure we have access to it
 	v.emerge(a);
-	
+
 	s16 max_y = a.MaxEdge.Y;
 	s16 min_y = a.MinEdge.Y;
-	
+
 	for(s32 x=a.MinEdge.X; x<=a.MaxEdge.X; x++)
 	for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
 	{
@ -125,11 +125,11 @@ SunlightPropagateResult propagateSunlight(VoxelManipulator &v, VoxelArea a,

 			if(incoming_light > old_light)
 				n.setLight(LIGHTBANK_DAY, incoming_light, ndef);
-			
+
 			if(diminish_light(incoming_light) != 0)
 				light_sources.insert(p, true);
 		}
-		
+
 		// Check validity of sunlight at top of block below if it
 		// hasn't already been proven invalid
 		if(bottom_sunlight_valid)