Merge branch 'upstream/master'

Conflicts:
	data/oerkki1.png
	src/client.cpp

53 files changed, 3327 insertions, 2838 deletions

diff --git a/.hgignore b/.hgignore
index 0870e3c67..964b22bd9 100644
--- a/.hgignore
+++ b/.hgignore
@@ -9,7 +9,12 @@ src/jthread/CMakeFiles/*
 src/jthread/Makefile
 src/jthread/cmake_config.h
 src/jthread/cmake_install.cmake
+src/.*.swp
+src/sqlite/libsqlite3.a
+src/session.vim
+util/uloste.png
 minetest.conf
+debug.txt
 bin/
 CMakeCache.txt
 CPackConfig.cmake
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 854c4b48d..15f4a6453 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@ project(minetest)
 
 set(VERSION_MAJOR 0)
 set(VERSION_MINOR 2)
-set(VERSION_PATCH 20110618_0_dev)
+set(VERSION_PATCH 20110704_0)
 set(VERSION_STRING "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
 
 # Configuration options
diff --git a/data/oerkki1_damaged.png b/data/oerkki1_damaged.png
new file mode 100644
index 000000000..9b777387c
--- /dev/null
+++ b/data/oerkki1_damaged.png
diff --git a/data/unknown_block.png b/data/unknown_block.png
new file mode 100644
index 000000000..a27cb8ca9
--- /dev/null
+++ b/data/unknown_block.png
diff --git a/doc/changelog.txt b/doc/changelog.txt
index 5a01b6bc4..58d28d236 100644
--- a/doc/changelog.txt
+++ b/doc/changelog.txt
@@ -3,6 +3,11 @@ Minetest-c55 changelog
 This should contain all the major changes.
 For minor stuff, refer to the commit log of the repository.
 
+2011-07-04:
+- Many small fixes
+- Code reorganizing to aid further development
+- Renewed map generator
+
 2011-06-02:
 - Password crash on windows fixed
 - Optimized server CPU usage a lot
diff --git a/minetest.conf.example b/minetest.conf.example
index 6e8a82bac..b81cc5fc6 100644
--- a/minetest.conf.example
+++ b/minetest.conf.example
@@ -9,25 +9,28 @@
 #
 # Further documentation:
 # http://celeron.55.lt/~celeron55/minetest/wiki/doku.php
-
 #
-# Client side stuff
+# NOTE: This file might not be up-to-date, refer to the
+#       defaultsettings.cpp file for an up-to-date list:
+# https://bitbucket.org/celeron55/minetest/src/tip/src/defaultsettings.cpp
 #
+# A vim command to convert most of defaultsettings.cpp to conf file format:
+# :'<,'>s/\tg_settings\.setDefault("\([^"]*\)", "\([^"]*\)");.*/#\1 = \2/g
 
-# Initial window size
-#screenW = 800
-#screenH = 600
-
-# Port to connect to and to bind a server at
-#port = 30000
-
-# Address to connect to (blank = start local server)
-#address = 
+#
+# Client and server
+#
 
-# Name of player. On server, this is the default admin.
+# Network port (UDP)
+#port = 
+# Name of player; on a server this is the main admin
 #name = 
 
-# Key configuration.
+#
+# Client stuff
+#
+
+# Key mappings
 # See http://irrlicht.sourceforge.net/docu/namespaceirr.html#a54da2a0e231901735e3da1b0edf72eb3
 #keymap_forward = KEY_KEY_W
 #keymap_backward = KEY_KEY_S
@@ -38,108 +41,99 @@
 #keymap_inventory = KEY_KEY_I
 #keymap_chat = KEY_KEY_T
 #keymap_rangeselect = KEY_KEY_R
-# Some (temporary) keys for debugging features
+#keymap_freemove = KEY_KEY_K
+#keymap_fastmove = KEY_KEY_J
+#keymap_frametime_graph = KEY_F1
+#keymap_screenshot = KEY_F12
+# Some (temporary) keys for debugging
 #keymap_special1 = KEY_KEY_E
 #keymap_print_debug_stacks = KEY_KEY_P
 
-#invert_mouse = false
-
 # The desired FPS
 #wanted_fps = 30
-
 # If FPS would go higher than this, limit it by sleeping
 # (to not waste CPU power for no benefit)
 #fps_max = 60
-
 # The allowed adjustment range for the automatic rendering range adjustment
 #viewing_range_nodes_max = 300
-#viewing_range_nodes_min = 35
-
+#viewing_range_nodes_min = 25
+# Initial window size
+screenW# = 800
+screenH# = 600
+# Address to connect to (#blank = start local server)
+#address = 
+# Enable random user input, for testing
+#random_input = false
+# Timeout for client to remove unused map data from memory
+#client_unload_unused_data_timeout = 600
 # Whether to fog out the end of the visible area
 #enable_fog = true
-
-# Enable/disable clouds
-#enable_clouds = true
-
-# Experimental
-#enable_farmesh = false
-
-# Enable a bit lower water surface; disable for speed
-#new_style_water = true
-
+# Enable a bit lower water surface; disable for speed (not quite optimized)
+#new_style_water = false
 # Enable nice leaves; disable for speed
 #new_style_leaves = true
-
 # Enable smooth lighting with simple ambient occlusion;
 # disable for speed or for different looks.
 #smooth_lighting = true
-
 # Whether to draw a frametime graph (for debugging frametime)
 #frametime_graph = false
-
 # Enable combining mainly used textures to a bigger one for improved speed
 # disable if it causes graphics glitches.
 #enable_texture_atlas = true
-
 # Path to texture directory. All textures are first searched from here.
-#texture_path =
-
+#texture_path = 
 # Video back-end.
 # Possible values: null, software, burningsvideo, direct3d8, direct3d9, opengl
 #video_driver = opengl
-
-# Enable random user input, for testing
-#random_input = false
-
-# Timeout for client to remove unused map data from memory
-#client_delete_unused_sectors_timeout = 1200
+# Unobstructed movement without physics, downwards key is keymap_special1
+#free_move = false
+# Continuous forward movement (for testing)
+#continuous_forward = false
+# Fast movement (keymap_special1)
+#fast_move = false
+# Invert mouse
+#invert_mouse = false
+# FarMesh thingy
+#enable_farmesh = false
+# Enable/disable clouds
+#enable_clouds = true
+# Don't draw stone (for testing)
+#invisible_stone = false
+# Path for screenshots
+#screenshot_path = .
 
 #
-# Server side stuff
+# Server stuff
 #
 
 # Map directory (everything in the world is stored here)
-#map-dir = /home/palle/custom_map
-
+#map-#dir = /custom/map
+# Set to true to enable experimental features or stuff that is tested
+# (varies from version to version, usually not useful at all)
+#enable_experimental = false
 # Set to true to enable creative mode (unlimited inventory)
 #creative_mode = false
-
 #enable_damage = false
-
+# Gives some stuff to players at the beginning
+#give_initial_stuff = false
 #default_password = 
-
 # Available privileges: build, teleport, settime, privs, shout
 #default_privs = build, shout
-
-# Gives some stuff to players at the beginning
-#give_initial_stuff = false
-
-# Set to true to enable experimental features
-# (varies from version to version, see wiki)
-#enable_experimental = false
-
-# Profiler data print interval. 0 = disable.
-#profiler_print_interval = 10
+# Profiler data print interval. #0 = disable.
+#profiler_print_interval = 0
+#enable_mapgen_debug_info = false
 
 # Player and object positions are sent at intervals specified by this
-#objectdata_inverval = 0.2
-
+#objectdata_interval = 0.2
 #active_object_range = 2
-
-#max_simultaneous_block_sends_per_client = 1
-#max_simultaneous_block_sends_server_total = 4
-
-#max_block_send_distance = 5
-#max_block_generate_distance = 4
-
-# 20 min/day
+#max_simultaneous_block_sends_per_client = 2
+#max_simultaneous_block_sends_server_total = 8
+#max_block_send_distance = 8
+#max_block_generate_distance = 8
+#time_send_interval = 20
+# Length of day/night cycle. 72=20min, 360=4min, 1=24hour
 #time_speed = 72
-# 4 min/day
-#time_speed = 360
-# 1 min/day
-#time_speed = 1440
-
-#time_send_interval = 5
-#server_unload_unused_sectors_timeout = 60
+#server_unload_unused_data_timeout = 60
 #server_map_save_interval = 60
+#full_block_send_enable_min_time_from_building = 2.0
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index f62a8626b..dfe5b5753 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -61,6 +61,7 @@ configure_file(
 )
 
 set(common_SRCS
+	content_sao.cpp
 	mapgen.cpp
 	content_inventory.cpp
 	content_nodemeta.cpp
@@ -102,6 +103,7 @@ set(common_SRCS
 # Client sources
 set(minetest_SRCS
 	${common_SRCS}
+	content_cao.cpp
 	mapblock_mesh.cpp
 	farmesh.cpp
 	keycode.cpp
diff --git a/src/activeobject.h b/src/activeobject.h
index 382f7f798..09ee23a14 100644
--- a/src/activeobject.h
+++ b/src/activeobject.h
@@ -23,6 +23,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "common_irrlicht.h"
 #include <string>
 
+#define ACTIVEOBJECT_TYPE_INVALID 0
+// Other types are defined in content_object.h
+
 struct ActiveObjectMessage
 {
 	ActiveObjectMessage(u16 id_, bool reliable_=true, std::string data_=""):
@@ -36,12 +39,6 @@ struct ActiveObjectMessage
 	std::string datastring;
 };
 
-#define ACTIVEOBJECT_TYPE_INVALID 0
-#define ACTIVEOBJECT_TYPE_TEST 1
-#define ACTIVEOBJECT_TYPE_ITEM 2
-#define ACTIVEOBJECT_TYPE_RAT 3
-#define ACTIVEOBJECT_TYPE_OERKKI1 4
-
 /*
 	Parent class for ServerActiveObject and ClientActiveObject
 */
diff --git a/src/client.cpp b/src/client.cpp
index e86b3a4f8..4f0baa573 100644
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -25,6 +25,105 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "main.h"
 #include <sstream>
 #include "porting.h"
+#include "mapsector.h"
+#include "mapblock_mesh.h"
+#include "mapblock.h"
+
+/*
+	QueuedMeshUpdate
+*/
+
+QueuedMeshUpdate::QueuedMeshUpdate():
+	p(-1337,-1337,-1337),
+	data(NULL),
+	ack_block_to_server(false)
+{
+}
+
+QueuedMeshUpdate::~QueuedMeshUpdate()
+{
+	if(data)
+		delete data;
+}
+
+/*
+	MeshUpdateQueue
+*/
+	
+MeshUpdateQueue::MeshUpdateQueue()
+{
+	m_mutex.Init();
+}
+
+MeshUpdateQueue::~MeshUpdateQueue()
+{
+	JMutexAutoLock lock(m_mutex);
+
+	core::list<QueuedMeshUpdate*>::Iterator i;
+	for(i=m_queue.begin(); i!=m_queue.end(); i++)
+	{
+		QueuedMeshUpdate *q = *i;
+		delete q;
+	}
+}
+
+/*
+	peer_id=0 adds with nobody to send to
+*/
+void MeshUpdateQueue::addBlock(v3s16 p, MeshMakeData *data, bool ack_block_to_server)
+{
+	DSTACK(__FUNCTION_NAME);
+
+	assert(data);
+
+	JMutexAutoLock lock(m_mutex);
+
+	/*
+		Find if block is already in queue.
+		If it is, update the data and quit.
+	*/
+	core::list<QueuedMeshUpdate*>::Iterator i;
+	for(i=m_queue.begin(); i!=m_queue.end(); i++)
+	{
+		QueuedMeshUpdate *q = *i;
+		if(q->p == p)
+		{
+			if(q->data)
+				delete q->data;
+			q->data = data;
+			if(ack_block_to_server)
+				q->ack_block_to_server = true;
+			return;
+		}
+	}
+	
+	/*
+		Add the block
+	*/
+	QueuedMeshUpdate *q = new QueuedMeshUpdate;
+	q->p = p;
+	q->data = data;
+	q->ack_block_to_server = ack_block_to_server;
+	m_queue.push_back(q);
+}
+
+// Returned pointer must be deleted
+// Returns NULL if queue is empty
+QueuedMeshUpdate * MeshUpdateQueue::pop()
+{
+	JMutexAutoLock lock(m_mutex);
+
+	core::list<QueuedMeshUpdate*>::Iterator i = m_queue.begin();
+	if(i == m_queue.end())
+		return NULL;
+	QueuedMeshUpdate *q = *i;
+	m_queue.erase(i);
+	return q;
+}
+
+/*
+	MeshUpdateThread
+*/
 
 void * MeshUpdateThread::Thread()
 {
@@ -36,6 +135,15 @@ void * MeshUpdateThread::Thread()
 
 	while(getRun())
 	{
+		/*// Wait for output queue to flush.
+		// Allow 2 in queue, this makes less frametime jitter.
+		// Umm actually, there is no much difference
+		if(m_queue_out.size() >= 2)
+		{
+			sleep_ms(3);
+			continue;
+		}*/
+
 		QueuedMeshUpdate *q = m_queue_in.pop();
 		if(q == NULL)
 		{
@@ -91,7 +199,7 @@ Client::Client(
 	m_access_denied(false)
 {
 	m_packetcounter_timer = 0.0;
-	m_delete_unused_sectors_timer = 0.0;
+	//m_delete_unused_sectors_timer = 0.0;
 	m_connection_reinit_timer = 0.0;
 	m_avg_rtt_timer = 0.0;
 	m_playerpos_send_timer = 0.0;
@@ -195,7 +303,11 @@ void Client::step(float dtime)
 			m_packetcounter.clear();
 		}
 	}
+	
+	// Get connection status
+	bool connected = connectedAndInitialized();
 
+#if 0
 	{
 		/*
 			Delete unused sectors
@@ -225,16 +337,16 @@ void Client::step(float dtime)
 					true, &deleted_blocks);*/
 			
 			// Delete whole sectors
-			u32 num = m_env.getMap().unloadUnusedData
+			m_env.getMap().unloadUnusedData
 					(delete_unused_sectors_timeout,
-					false, &deleted_blocks);
+					&deleted_blocks);
 
-			if(num > 0)
+			if(deleted_blocks.size() > 0)
 			{
 				/*dstream<<DTIME<<"Client: Deleted blocks of "<<num
 						<<" unused sectors"<<std::endl;*/
-				dstream<<DTIME<<"Client: Deleted "<<num
-						<<" unused sectors"<<std::endl;
+				/*dstream<<DTIME<<"Client: Deleted "<<num
+						<<" unused sectors"<<std::endl;*/
 				
 				/*
 					Send info to server
@@ -284,8 +396,7 @@ void Client::step(float dtime)
 			}
 		}
 	}
-
-	bool connected = connectedAndInitialized();
+#endif
 
 	if(connected == false)
 	{
@@ -331,6 +442,67 @@ void Client::step(float dtime)
 	*/
 	
 	/*
+		Run Map's timers and unload unused data
+	*/
+	const float map_timer_and_unload_dtime = 5.25;
+	if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
+	{
+		ScopeProfiler sp(&g_profiler, "Client: map timer and unload");
+		core::list<v3s16> deleted_blocks;
+		m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
+				g_settings.getFloat("client_unload_unused_data_timeout"),
+				&deleted_blocks);
+				
+		/*if(deleted_blocks.size() > 0)
+			dstream<<"Client: Unloaded "<<deleted_blocks.size()
+					<<" unused blocks"<<std::endl;*/
+			
+		/*
+			Send info to server
+			NOTE: This loop is intentionally iterated the way it is.
+		*/
+
+		core::list<v3s16>::Iterator i = deleted_blocks.begin();
+		core::list<v3s16> sendlist;
+		for(;;)
+		{
+			if(sendlist.size() == 255 || i == deleted_blocks.end())
+			{
+				if(sendlist.size() == 0)
+					break;
+				/*
+					[0] u16 command
+					[2] u8 count
+					[3] v3s16 pos_0
+					[3+6] v3s16 pos_1
+					...
+				*/
+				u32 replysize = 2+1+6*sendlist.size();
+				SharedBuffer<u8> reply(replysize);
+				writeU16(&reply[0], TOSERVER_DELETEDBLOCKS);
+				reply[2] = sendlist.size();
+				u32 k = 0;
+				for(core::list<v3s16>::Iterator
+						j = sendlist.begin();
+						j != sendlist.end(); j++)
+				{
+					writeV3S16(&reply[2+1+6*k], *j);
+					k++;
+				}
+				m_con.Send(PEER_ID_SERVER, 1, reply, true);
+
+				if(i == deleted_blocks.end())
+					break;
+
+				sendlist.clear();
+			}
+
+			sendlist.push_back(*i);
+			i++;
+		}
+	}
+
+	/*
 		Handle environment
 	*/
 	{
@@ -345,23 +517,23 @@ void Client::step(float dtime)
 		//TimeTaker envtimer("env step", m_device);
 		// Step environment
 		m_env.step(dtime);
-
-		// Step active blocks
+		
+		/*
+			Handle active blocks
+			NOTE: These old objects are DEPRECATED. TODO: Remove
+		*/
 		for(core::map<v3s16, bool>::Iterator
 				i = m_active_blocks.getIterator();
 				i.atEnd() == false; i++)
 		{
 			v3s16 p = i.getNode()->getKey();
 
-			MapBlock *block = NULL;
-			try
-			{
-				block = m_env.getMap().getBlockNoCreate(p);
-				block->stepObjects(dtime, false, m_env.getDayNightRatio());
-			}
-			catch(InvalidPositionException &e)
-			{
-			}
+			MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(p);
+			if(block == NULL)
+				continue;
+			
+			// Step MapBlockObjects
+			block->stepObjects(dtime, false, m_env.getDayNightRatio());
 		}
 
 		/*
@@ -695,78 +867,43 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 		MapSector *sector;
 		MapBlock *block;
 		
-		{ //envlock
-			//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
-			
-			v2s16 p2d(p.X, p.Z);
-			sector = m_env.getMap().emergeSector(p2d);
-			
-			v2s16 sp = sector->getPos();
-			if(sp != p2d)
-			{
-				dstream<<"ERROR: Got sector with getPos()="
-						<<"("<<sp.X<<","<<sp.Y<<"), tried to get"
-						<<"("<<p2d.X<<","<<p2d.Y<<")"<<std::endl;
-			}
-
-			assert(sp == p2d);
-			//assert(sector->getPos() == p2d);
+		v2s16 p2d(p.X, p.Z);
+		sector = m_env.getMap().emergeSector(p2d);
+		
+		assert(sector->getPos() == p2d);
 
-			//TimeTaker timer("MapBlock deSerialize");
-			// 0ms
-			
-			try{
-				block = sector->getBlockNoCreate(p.Y);
-				/*
-					Update an existing block
-				*/
-				//dstream<<"Updating"<<std::endl;
-				block->deSerialize(istr, ser_version);
-				//block->setChangedFlag();
-			}
-			catch(InvalidPositionException &e)
-			{
-				/*
-					Create a new block
-				*/
-				//dstream<<"Creating new"<<std::endl;
-				block = new MapBlock(&m_env.getMap(), p);
-				block->deSerialize(istr, ser_version);
-				sector->insertBlock(block);
-				//block->setChangedFlag();
-
-				//DEBUG
-				/*NodeMod mod;
-				mod.type = NODEMOD_CHANGECONTENT;
-				mod.param = CONTENT_MESE;
-				block->setTempMod(v3s16(8,10,8), mod);
-				block->setTempMod(v3s16(8,9,8), mod);
-				block->setTempMod(v3s16(8,8,8), mod);
-				block->setTempMod(v3s16(8,7,8), mod);
-				block->setTempMod(v3s16(8,6,8), mod);*/
-#if 0
-				/*
-					Add some coulds
-					Well, this is a dumb way to do it, they should just
-					be drawn as separate objects. But the looks of them
-					can be tested this way.
-				*/
-				if(p.Y == 3)
-				{
-					NodeMod mod;
-					mod.type = NODEMOD_CHANGECONTENT;
-					mod.param = CONTENT_CLOUD;
-					v3s16 p2;
-					p2.Y = 8;
-					for(p2.X=3; p2.X<=13; p2.X++)
-					for(p2.Z=3; p2.Z<=13; p2.Z++)
-					{
-						block->setTempMod(p2, mod);
-					}
-				}
-#endif
-			}
-		} //envlock
+		//TimeTaker timer("MapBlock deSerialize");
+		// 0ms
+		
+		block = sector->getBlockNoCreateNoEx(p.Y);
+		if(block)
+		{
+			/*
+				Update an existing block
+			*/
+			//dstream<<"Updating"<<std::endl;
+			block->deSerialize(istr, ser_version);
+		}
+		else
+		{
+			/*
+				Create a new block
+			*/
+			//dstream<<"Creating new"<<std::endl;
+			block = new MapBlock(&m_env.getMap(), p);
+			block->deSerialize(istr, ser_version);
+			sector->insertBlock(block);
+
+			//DEBUG
+			/*NodeMod mod;
+			mod.type = NODEMOD_CHANGECONTENT;
+			mod.param = CONTENT_MESE;
+			block->setTempMod(v3s16(8,10,8), mod);
+			block->setTempMod(v3s16(8,9,8), mod);
+			block->setTempMod(v3s16(8,8,8), mod);
+			block->setTempMod(v3s16(8,7,8), mod);
+			block->setTempMod(v3s16(8,6,8), mod);*/
+		}
 
 #if 0
 		/*
@@ -798,6 +935,7 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 		/*
 			Add it to mesh update queue and set it to be acknowledged after update.
 		*/
+		//std::cerr<<"Adding mesh update task for received block"<<std::endl;
 		addUpdateMeshTaskWithEdge(p, true);
 	}
 	else if(command == TOCLIENT_PLAYERPOS)
@@ -974,6 +1112,8 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 	}
 	else if(command == TOCLIENT_SECTORMETA)
 	{
+		dstream<<"Client received DEPRECATED TOCLIENT_SECTORMETA"<<std::endl;
+#if 0
 		/*
 			[0] u16 command
 			[2] u8 sector count
@@ -1009,6 +1149,7 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 				((ClientMap&)m_env.getMap()).deSerializeSector(pos, is);
 			}
 		} //envlock
+#endif
 	}
 	else if(command == TOCLIENT_INVENTORY)
 	{
@@ -1105,6 +1246,7 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 
 		/*
 			Read block objects
+			NOTE: Deprecated stuff here, TODO: Remove
 		*/
 
 		// Read active block count
@@ -1753,7 +1895,7 @@ void Client::addNode(v3s16 p, MapNode n)
 
 	try
 	{
-		TimeTaker timer3("Client::addNode(): addNodeAndUpdate");
+		//TimeTaker timer3("Client::addNode(): addNodeAndUpdate");
 		m_env.getMap().addNodeAndUpdate(p, n, modified_blocks);
 	}
 	catch(InvalidPositionException &e)
@@ -1981,12 +2123,6 @@ void Client::printDebugInfo(std::ostream &os)
 		<<std::endl;*/
 }
 	
-/*s32 Client::getDayNightIndex()
-{
-	assert(m_daynight_i >= 0 && m_daynight_i < DAYNIGHT_CACHE_COUNT);
-	return m_daynight_i;
-}*/
-
 u32 Client::getDayNightRatio()
 {
 	//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
@@ -2000,6 +2136,40 @@ u16 Client::getHP()
 	return player->hp;
 }
 
+void Client::setTempMod(v3s16 p, NodeMod mod)
+{
+	//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
+	assert(m_env.getMap().mapType() == MAPTYPE_CLIENT);
+
+	core::map<v3s16, MapBlock*> affected_blocks;
+	((ClientMap&)m_env.getMap()).setTempMod(p, mod,
+			&affected_blocks);
+
+	for(core::map<v3s16, MapBlock*>::Iterator
+			i = affected_blocks.getIterator();
+			i.atEnd() == false; i++)
+	{
+		i.getNode()->getValue()->updateMesh(m_env.getDayNightRatio());
+	}
+}
+
+void Client::clearTempMod(v3s16 p)
+{
+	//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
+	assert(m_env.getMap().mapType() == MAPTYPE_CLIENT);
+
+	core::map<v3s16, MapBlock*> affected_blocks;
+	((ClientMap&)m_env.getMap()).clearTempMod(p,
+			&affected_blocks);
+
+	for(core::map<v3s16, MapBlock*>::Iterator
+			i = affected_blocks.getIterator();
+			i.atEnd() == false; i++)
+	{
+		i.getNode()->getValue()->updateMesh(m_env.getDayNightRatio());
+	}
+}
+
 void Client::addUpdateMeshTask(v3s16 p, bool ack_to_server)
 {
 	/*dstream<<"Client::addUpdateMeshTask(): "
@@ -2009,7 +2179,7 @@ void Client::addUpdateMeshTask(v3s16 p, bool ack_to_server)
 	MapBlock *b = m_env.getMap().getBlockNoCreateNoEx(p);
 	if(b == NULL)
 		return;
-
+	
 	/*
 		Create a task to update the mesh of the block
 	*/
@@ -2018,7 +2188,8 @@ void Client::addUpdateMeshTask(v3s16 p, bool ack_to_server)
 	
 	{
 		//TimeTaker timer("data fill");
-		// 0ms
+		// Release: ~0ms
+		// Debug: 1-6ms, avg=2ms
 		data->fill(getDayNightRatio(), b);
 	}
 
@@ -2044,6 +2215,10 @@ void Client::addUpdateMeshTask(v3s16 p, bool ack_to_server)
 	}
 #endif
 
+	/*
+		Mark mesh as non-expired at this point so that it can already
+		be marked as expired again if the data changes
+	*/
 	b->setMeshExpired(false);
 }
 
diff --git a/src/client.h b/src/client.h
index a1b1c66b4..0150b687e 100644
--- a/src/client.h
+++ b/src/client.h
@@ -28,6 +28,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "jmutex.h"
 #include <ostream>
 #include "clientobject.h"
+#include "utility.h" // For IntervalLimiter
+
+struct MeshMakeData;
 
 class ClientNotReadyException : public BaseException
 {
@@ -43,18 +46,8 @@ struct QueuedMeshUpdate
 	MeshMakeData *data;
 	bool ack_block_to_server;
 
-	QueuedMeshUpdate():
-		p(-1337,-1337,-1337),
-		data(NULL),
-		ack_block_to_server(false)
-	{
-	}
-	
-	~QueuedMeshUpdate()
-	{
-		if(data)
-			delete data;
-	}
+	QueuedMeshUpdate();
+	~QueuedMeshUpdate();
 };
 
 /*
@@ -63,76 +56,18 @@ struct QueuedMeshUpdate
 class MeshUpdateQueue
 {
 public:
-	MeshUpdateQueue()
-	{
-		m_mutex.Init();
-	}
+	MeshUpdateQueue();
 
-	~MeshUpdateQueue()
-	{
-		JMutexAutoLock lock(m_mutex);
-
-		core::list<QueuedMeshUpdate*>::Iterator i;
-		for(i=m_queue.begin(); i!=m_queue.end(); i++)
-		{
-			QueuedMeshUpdate *q = *i;
-			delete q;
-		}
-	}
+	~MeshUpdateQueue();
 	
 	/*
 		peer_id=0 adds with nobody to send to
 	*/
-	void addBlock(v3s16 p, MeshMakeData *data, bool ack_block_to_server)
-	{
-		DSTACK(__FUNCTION_NAME);
-
-		assert(data);
-	
-		JMutexAutoLock lock(m_mutex);
-
-		/*
-			Find if block is already in queue.
-			If it is, update the data and quit.
-		*/
-		core::list<QueuedMeshUpdate*>::Iterator i;
-		for(i=m_queue.begin(); i!=m_queue.end(); i++)
-		{
-			QueuedMeshUpdate *q = *i;
-			if(q->p == p)
-			{
-				if(q->data)
-					delete q->data;
-				q->data = data;
-				if(ack_block_to_server)
-					q->ack_block_to_server = true;
-				return;
-			}
-		}
-		
-		/*
-			Add the block
-		*/
-		QueuedMeshUpdate *q = new QueuedMeshUpdate;
-		q->p = p;
-		q->data = data;
-		q->ack_block_to_server = ack_block_to_server;
-		m_queue.push_back(q);
-	}
+	void addBlock(v3s16 p, MeshMakeData *data, bool ack_block_to_server);
 
 	// Returned pointer must be deleted
 	// Returns NULL if queue is empty
-	QueuedMeshUpdate * pop()
-	{
-		JMutexAutoLock lock(m_mutex);
-
-		core::list<QueuedMeshUpdate*>::Iterator i = m_queue.begin();
-		if(i == m_queue.end())
-			return NULL;
-		QueuedMeshUpdate *q = *i;
-		m_queue.erase(i);
-		return q;
-	}
+	QueuedMeshUpdate * pop();
 
 	u32 size()
 	{
@@ -309,40 +244,8 @@ public:
 
 	u16 getHP();
 
-	//void updateSomeExpiredMeshes();
-	
-	void setTempMod(v3s16 p, NodeMod mod)
-	{
-		//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
-		assert(m_env.getMap().mapType() == MAPTYPE_CLIENT);
-
-		core::map<v3s16, MapBlock*> affected_blocks;
-		((ClientMap&)m_env.getMap()).setTempMod(p, mod,
-				&affected_blocks);
-
-		for(core::map<v3s16, MapBlock*>::Iterator
-				i = affected_blocks.getIterator();
-				i.atEnd() == false; i++)
-		{
-			i.getNode()->getValue()->updateMesh(m_env.getDayNightRatio());
-		}
-	}
-	void clearTempMod(v3s16 p)
-	{
-		//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
-		assert(m_env.getMap().mapType() == MAPTYPE_CLIENT);
-
-		core::map<v3s16, MapBlock*> affected_blocks;
-		((ClientMap&)m_env.getMap()).clearTempMod(p,
-				&affected_blocks);
-
-		for(core::map<v3s16, MapBlock*>::Iterator
-				i = affected_blocks.getIterator();
-				i.atEnd() == false; i++)
-		{
-			i.getNode()->getValue()->updateMesh(m_env.getDayNightRatio());
-		}
-	}
+	void setTempMod(v3s16 p, NodeMod mod);
+	void clearTempMod(v3s16 p);
 
 	float getAvgRtt()
 	{
@@ -389,6 +292,15 @@ public:
 	{
 		return m_access_denied_reason;
 	}
+	
+	/*
+		This should only be used for calling the special drawing stuff in
+		ClientEnvironment
+	*/
+	ClientEnvironment * getEnv()
+	{
+		return &m_env;
+	}
 
 private:
 	
@@ -404,11 +316,11 @@ private:
 	void sendPlayerInfo();
 	
 	float m_packetcounter_timer;
-	float m_delete_unused_sectors_timer;
 	float m_connection_reinit_timer;
 	float m_avg_rtt_timer;
 	float m_playerpos_send_timer;
 	float m_ignore_damage_timer; // Used after server moves player
+	IntervalLimiter m_map_timer_and_unload_interval;
 
 	MeshUpdateThread m_mesh_update_thread;
 	
diff --git a/src/clientobject.cpp b/src/clientobject.cpp
index 402535ffc..787efef29 100644
--- a/src/clientobject.cpp
+++ b/src/clientobject.cpp
@@ -21,9 +21,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "debug.h"
 #include "porting.h"
 #include "constants.h"
-#include "utility.h"
-#include "environment.h"
-#include "tile.h"
 
 /*
 	ClientActiveObject
@@ -68,674 +65,4 @@ void ClientActiveObject::registerType(u16 type, Factory f)
 	m_types.insert(type, f);
 }
 
-/*
-	TestCAO
-*/
-
-// Prototype
-TestCAO proto_TestCAO;
-
-TestCAO::TestCAO():
-	ClientActiveObject(0),
-	m_node(NULL),
-	m_position(v3f(0,10*BS,0))
-{
-	ClientActiveObject::registerType(getType(), create);
-}
-
-TestCAO::~TestCAO()
-{
-}
-
-ClientActiveObject* TestCAO::create()
-{
-	return new TestCAO();
-}
-
-void TestCAO::addToScene(scene::ISceneManager *smgr)
-{
-	if(m_node != NULL)
-		return;
-	
-	video::IVideoDriver* driver = smgr->getVideoDriver();
-	
-	scene::SMesh *mesh = new scene::SMesh();
-	scene::IMeshBuffer *buf = new scene::SMeshBuffer();
-	video::SColor c(255,255,255,255);
-	video::S3DVertex vertices[4] =
-	{
-		video::S3DVertex(-BS/2,-BS/4,0, 0,0,0, c, 0,1),
-		video::S3DVertex(BS/2,-BS/4,0, 0,0,0, c, 1,1),
-		video::S3DVertex(BS/2,BS/4,0, 0,0,0, c, 1,0),
-		video::S3DVertex(-BS/2,BS/4,0, 0,0,0, c, 0,0),
-	};
-	u16 indices[] = {0,1,2,2,3,0};
-	buf->append(vertices, 4, indices, 6);
-	// Set material
-	buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
-	buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
-	buf->getMaterial().setTexture
-			(0, driver->getTexture(getTexturePath("rat.png").c_str()));
-	buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
-	buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
-	buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
-	// Add to mesh
-	mesh->addMeshBuffer(buf);
-	buf->drop();
-	m_node = smgr->addMeshSceneNode(mesh, NULL);
-	mesh->drop();
-	updateNodePos();
-}
-
-void TestCAO::removeFromScene()
-{
-	if(m_node == NULL)
-		return;
-
-	m_node->remove();
-	m_node = NULL;
-}
-
-void TestCAO::updateLight(u8 light_at_pos)
-{
-}
-
-v3s16 TestCAO::getLightPosition()
-{
-	return floatToInt(m_position, BS);
-}
-
-void TestCAO::updateNodePos()
-{
-	if(m_node == NULL)
-		return;
-
-	m_node->setPosition(m_position);
-	//m_node->setRotation(v3f(0, 45, 0));
-}
-
-void TestCAO::step(float dtime, ClientEnvironment *env)
-{
-	if(m_node)
-	{
-		v3f rot = m_node->getRotation();
-		//dstream<<"dtime="<<dtime<<", rot.Y="<<rot.Y<<std::endl;
-		rot.Y += dtime * 180;
-		m_node->setRotation(rot);
-	}
-}
-
-void TestCAO::processMessage(const std::string &data)
-{
-	dstream<<"TestCAO: Got data: "<<data<<std::endl;
-	std::istringstream is(data, std::ios::binary);
-	u16 cmd;
-	is>>cmd;
-	if(cmd == 0)
-	{
-		v3f newpos;
-		is>>newpos.X;
-		is>>newpos.Y;
-		is>>newpos.Z;
-		m_position = newpos;
-		updateNodePos();
-	}
-}
-
-/*
-	ItemCAO
-*/
-
-#include "inventory.h"
-
-// Prototype
-ItemCAO proto_ItemCAO;
-
-ItemCAO::ItemCAO():
-	ClientActiveObject(0),
-	m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.),
-	m_node(NULL),
-	m_position(v3f(0,10*BS,0))
-{
-	ClientActiveObject::registerType(getType(), create);
-}
-
-ItemCAO::~ItemCAO()
-{
-}
-
-ClientActiveObject* ItemCAO::create()
-{
-	return new ItemCAO();
-}
-
-void ItemCAO::addToScene(scene::ISceneManager *smgr)
-{
-	if(m_node != NULL)
-		return;
-	
-	video::IVideoDriver* driver = smgr->getVideoDriver();
-	
-	scene::SMesh *mesh = new scene::SMesh();
-	scene::IMeshBuffer *buf = new scene::SMeshBuffer();
-	video::SColor c(255,255,255,255);
-	video::S3DVertex vertices[4] =
-	{
-		/*video::S3DVertex(-BS/2,-BS/4,0, 0,0,0, c, 0,1),
-		video::S3DVertex(BS/2,-BS/4,0, 0,0,0, c, 1,1),
-		video::S3DVertex(BS/2,BS/4,0, 0,0,0, c, 1,0),
-		video::S3DVertex(-BS/2,BS/4,0, 0,0,0, c, 0,0),*/
-		video::S3DVertex(BS/3.,0,0, 0,0,0, c, 0,1),
-		video::S3DVertex(-BS/3.,0,0, 0,0,0, c, 1,1),
-		video::S3DVertex(-BS/3.,0+BS*2./3.,0, 0,0,0, c, 1,0),
-		video::S3DVertex(BS/3.,0+BS*2./3.,0, 0,0,0, c, 0,0),
-	};
-	u16 indices[] = {0,1,2,2,3,0};
-	buf->append(vertices, 4, indices, 6);
-	// Set material
-	buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
-	buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
-	//buf->getMaterial().setTexture(0, NULL);
-	// Initialize with the stick texture
-	buf->getMaterial().setTexture
-			(0, driver->getTexture(getTexturePath("stick.png").c_str()));
-	buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
-	buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
-	buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
-	// Add to mesh
-	mesh->addMeshBuffer(buf);
-	buf->drop();
-	m_node = smgr->addMeshSceneNode(mesh, NULL);
-	mesh->drop();
-	// Set it to use the materials of the meshbuffers directly.
-	// This is needed for changing the texture in the future
-	m_node->setReadOnlyMaterials(true);
-	updateNodePos();
-}
-
-void ItemCAO::removeFromScene()
-{
-	if(m_node == NULL)
-		return;
-
-	m_node->remove();
-	m_node = NULL;
-}
-
-void ItemCAO::updateLight(u8 light_at_pos)
-{
-	if(m_node == NULL)
-		return;
-
-	u8 li = decode_light(light_at_pos);
-	video::SColor color(255,li,li,li);
-
-	scene::IMesh *mesh = m_node->getMesh();
-	if(mesh == NULL)
-		return;
-	
-	u16 mc = mesh->getMeshBufferCount();
-	for(u16 j=0; j<mc; j++)
-	{
-		scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
-		video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
-		u16 vc = buf->getVertexCount();
-		for(u16 i=0; i<vc; i++)
-		{
-			vertices[i].Color = color;
-		}
-	}
-}
-
-v3s16 ItemCAO::getLightPosition()
-{
-	return floatToInt(m_position, BS);
-}
-
-void ItemCAO::updateNodePos()
-{
-	if(m_node == NULL)
-		return;
-
-	m_node->setPosition(m_position);
-}
-
-void ItemCAO::step(float dtime, ClientEnvironment *env)
-{
-	if(m_node)
-	{
-		/*v3f rot = m_node->getRotation();
-		rot.Y += dtime * 120;
-		m_node->setRotation(rot);*/
-		LocalPlayer *player = env->getLocalPlayer();
-		assert(player);
-		v3f rot = m_node->getRotation();
-		rot.Y = 180.0 - (player->getYaw());
-		m_node->setRotation(rot);
-	}
-}
-
-void ItemCAO::processMessage(const std::string &data)
-{
-	dstream<<"ItemCAO: Got message"<<std::endl;
-	std::istringstream is(data, std::ios::binary);
-	// command
-	u8 cmd = readU8(is);
-	if(cmd == 0)
-	{
-		// pos
-		m_position = readV3F1000(is);
-		updateNodePos();
-	}
-}
-
-void ItemCAO::initialize(const std::string &data)
-{
-	dstream<<"ItemCAO: Got init data"<<std::endl;
-	
-	{
-		std::istringstream is(data, std::ios::binary);
-		// version
-		u8 version = readU8(is);
-		// check version
-		if(version != 0)
-			return;
-		// pos
-		m_position = readV3F1000(is);
-		// inventorystring
-		m_inventorystring = deSerializeString(is);
-	}
-	
-	updateNodePos();
-
-	/*
-		Update image of node
-	*/
-
-	if(m_node == NULL)
-		return;
-
-	scene::IMesh *mesh = m_node->getMesh();
-
-	if(mesh == NULL)
-		return;
-	
-	scene::IMeshBuffer *buf = mesh->getMeshBuffer(0);
-
-	if(buf == NULL)
-		return;
-
-	// Create an inventory item to see what is its image
-	std::istringstream is(m_inventorystring, std::ios_base::binary);
-	video::ITexture *texture = NULL;
-	try{
-		InventoryItem *item = NULL;
-		item = InventoryItem::deSerialize(is);
-		dstream<<__FUNCTION_NAME<<": m_inventorystring=\""
-				<<m_inventorystring<<"\" -> item="<<item
-				<<std::endl;
-		if(item)
-		{
-			texture = item->getImage();
-			delete item;
-		}
-	}
-	catch(SerializationError &e)
-	{
-		dstream<<"WARNING: "<<__FUNCTION_NAME
-				<<": error deSerializing inventorystring \""
-				<<m_inventorystring<<"\""<<std::endl;
-	}
-	
-	// Set meshbuffer texture
-	buf->getMaterial().setTexture(0, texture);
-	
-}
-
-/*
-	RatCAO
-*/
-
-#include "inventory.h"
-
-// Prototype
-RatCAO proto_RatCAO;
-
-RatCAO::RatCAO():
-	ClientActiveObject(0),
-	m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS/2.,BS/3.),
-	m_node(NULL),
-	m_position(v3f(0,10*BS,0)),
-	m_yaw(0)
-{
-	ClientActiveObject::registerType(getType(), create);
-}
-
-RatCAO::~RatCAO()
-{
-}
-
-ClientActiveObject* RatCAO::create()
-{
-	return new RatCAO();
-}
-
-void RatCAO::addToScene(scene::ISceneManager *smgr)
-{
-	if(m_node != NULL)
-		return;
-	
-	video::IVideoDriver* driver = smgr->getVideoDriver();
-	
-	scene::SMesh *mesh = new scene::SMesh();
-	scene::IMeshBuffer *buf = new scene::SMeshBuffer();
-	video::SColor c(255,255,255,255);
-	video::S3DVertex vertices[4] =
-	{
-		video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
-		video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
-		video::S3DVertex(BS/2,BS/2,0, 0,0,0, c, 1,0),
-		video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c, 0,0),
-	};
-	u16 indices[] = {0,1,2,2,3,0};
-	buf->append(vertices, 4, indices, 6);
-	// Set material
-	buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
-	buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
-	//buf->getMaterial().setTexture(0, NULL);
-	buf->getMaterial().setTexture
-			(0, driver->getTexture(getTexturePath("rat.png").c_str()));
-	buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
-	buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
-	buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
-	// Add to mesh
-	mesh->addMeshBuffer(buf);
-	buf->drop();
-	m_node = smgr->addMeshSceneNode(mesh, NULL);
-	mesh->drop();
-	// Set it to use the materials of the meshbuffers directly.
-	// This is needed for changing the texture in the future
-	m_node->setReadOnlyMaterials(true);
-	updateNodePos();
-}
-
-void RatCAO::removeFromScene()
-{
-	if(m_node == NULL)
-		return;
-
-	m_node->remove();
-	m_node = NULL;
-}
-
-void RatCAO::updateLight(u8 light_at_pos)
-{
-	if(m_node == NULL)
-		return;
-
-	u8 li = decode_light(light_at_pos);
-	video::SColor color(255,li,li,li);
-
-	scene::IMesh *mesh = m_node->getMesh();
-	if(mesh == NULL)
-		return;
-	
-	u16 mc = mesh->getMeshBufferCount();
-	for(u16 j=0; j<mc; j++)
-	{
-		scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
-		video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
-		u16 vc = buf->getVertexCount();
-		for(u16 i=0; i<vc; i++)
-		{
-			vertices[i].Color = color;
-		}
-	}
-}
-
-v3s16 RatCAO::getLightPosition()
-{
-	return floatToInt(m_position+v3f(0,BS*0.5,0), BS);
-}
-
-void RatCAO::updateNodePos()
-{
-	if(m_node == NULL)
-		return;
-
-	//m_node->setPosition(m_position);
-	m_node->setPosition(pos_translator.vect_show);
-
-	v3f rot = m_node->getRotation();
-	rot.Y = 180.0 - m_yaw;
-	m_node->setRotation(rot);
-}
-
-void RatCAO::step(float dtime, ClientEnvironment *env)
-{
-	pos_translator.translate(dtime);
-	updateNodePos();
-}
-
-void RatCAO::processMessage(const std::string &data)
-{
-	//dstream<<"RatCAO: Got message"<<std::endl;
-	std::istringstream is(data, std::ios::binary);
-	// command
-	u8 cmd = readU8(is);
-	if(cmd == 0)
-	{
-		// pos
-		m_position = readV3F1000(is);
-		pos_translator.update(m_position);
-		// yaw
-		m_yaw = readF1000(is);
-		updateNodePos();
-	}
-}
-
-void RatCAO::initialize(const std::string &data)
-{
-	//dstream<<"RatCAO: Got init data"<<std::endl;
-	
-	{
-		std::istringstream is(data, std::ios::binary);
-		// version
-		u8 version = readU8(is);
-		// check version
-		if(version != 0)
-			return;
-		// pos
-		m_position = readV3F1000(is);
-		pos_translator.init(m_position);
-	}
-	
-	updateNodePos();
-}
-
-/*
-	Oerkki1CAO
-*/
-
-#include "inventory.h"
-
-// Prototype
-Oerkki1CAO proto_Oerkki1CAO;
-
-Oerkki1CAO::Oerkki1CAO():
-	ClientActiveObject(0),
-	m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS*2.,BS/3.),
-	m_node(NULL),
-	m_position(v3f(0,10*BS,0)),
-	m_yaw(0)
-{
-	ClientActiveObject::registerType(getType(), create);
-}
-
-Oerkki1CAO::~Oerkki1CAO()
-{
-}
-
-ClientActiveObject* Oerkki1CAO::create()
-{
-	return new Oerkki1CAO();
-}
-
-void Oerkki1CAO::addToScene(scene::ISceneManager *smgr)
-{
-	if(m_node != NULL)
-		return;
-	
-	video::IVideoDriver* driver = smgr->getVideoDriver();
-	
-	scene::SMesh *mesh = new scene::SMesh();
-	scene::IMeshBuffer *buf = new scene::SMeshBuffer();
-	video::SColor c(255,255,255,255);
-	video::S3DVertex vertices[4] =
-	{
-		video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
-		video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
-		video::S3DVertex(BS/2,BS*2,0, 0,0,0, c, 1,0),
-		video::S3DVertex(-BS/2,BS*2,0, 0,0,0, c, 0,0),
-	};
-	u16 indices[] = {0,1,2,2,3,0};
-	buf->append(vertices, 4, indices, 6);
-	// Set material
-	buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
-	buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
-	//buf->getMaterial().setTexture(0, NULL);
-	buf->getMaterial().setTexture
-			(0, driver->getTexture(getTexturePath("oerkki1.png").c_str()));
-	buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
-	buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
-	buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
-	// Add to mesh
-	mesh->addMeshBuffer(buf);
-	buf->drop();
-	m_node = smgr->addMeshSceneNode(mesh, NULL);
-	mesh->drop();
-	// Set it to use the materials of the meshbuffers directly.
-	// This is needed for changing the texture in the future
-	m_node->setReadOnlyMaterials(true);
-	updateNodePos();
-}
-
-void Oerkki1CAO::removeFromScene()
-{
-	if(m_node == NULL)
-		return;
-
-	m_node->remove();
-	m_node = NULL;
-}
-
-void Oerkki1CAO::updateLight(u8 light_at_pos)
-{
-	if(m_node == NULL)
-		return;
-	
-	if(light_at_pos <= 2)
-	{
-		m_node->setVisible(false);
-		return;
-	}
-
-	m_node->setVisible(true);
-
-	u8 li = decode_light(light_at_pos);
-	video::SColor color(255,li,li,li);
-
-	scene::IMesh *mesh = m_node->getMesh();
-	if(mesh == NULL)
-		return;
-	
-	u16 mc = mesh->getMeshBufferCount();
-	for(u16 j=0; j<mc; j++)
-	{
-		scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
-		video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
-		u16 vc = buf->getVertexCount();
-		for(u16 i=0; i<vc; i++)
-		{
-			vertices[i].Color = color;
-		}
-	}
-}
-
-v3s16 Oerkki1CAO::getLightPosition()
-{
-	return floatToInt(m_position+v3f(0,BS*1.5,0), BS);
-}
-
-void Oerkki1CAO::updateNodePos()
-{
-	if(m_node == NULL)
-		return;
-
-	//m_node->setPosition(m_position);
-	m_node->setPosition(pos_translator.vect_show);
-
-	v3f rot = m_node->getRotation();
-	rot.Y = 180.0 - m_yaw + 90.0;
-	m_node->setRotation(rot);
-}
-
-void Oerkki1CAO::step(float dtime, ClientEnvironment *env)
-{
-	pos_translator.translate(dtime);
-	updateNodePos();
-
-	LocalPlayer *player = env->getLocalPlayer();
-	assert(player);
-	
-	v3f playerpos = player->getPosition();
-	v2f playerpos_2d(playerpos.X,playerpos.Z);
-	v2f objectpos_2d(m_position.X,m_position.Z);
-
-	if(fabs(m_position.Y - playerpos.Y) < 3.0*BS &&
-			objectpos_2d.getDistanceFrom(playerpos_2d) < 1.0*BS)
-	{
-		if(m_attack_interval.step(dtime, 0.5))
-		{
-			env->damageLocalPlayer(2);
-		}
-	}
-}
-
-void Oerkki1CAO::processMessage(const std::string &data)
-{
-	//dstream<<"Oerkki1CAO: Got message"<<std::endl;
-	std::istringstream is(data, std::ios::binary);
-	// command
-	u8 cmd = readU8(is);
-	if(cmd == 0)
-	{
-		// pos
-		m_position = readV3F1000(is);
-		pos_translator.update(m_position);
-		// yaw
-		m_yaw = readF1000(is);
-		updateNodePos();
-	}
-}
-
-void Oerkki1CAO::initialize(const std::string &data)
-{
-	//dstream<<"Oerkki1CAO: Got init data"<<std::endl;
-	
-	{
-		std::istringstream is(data, std::ios::binary);
-		// version
-		u8 version = readU8(is);
-		// check version
-		if(version != 0)
-			return;
-		// pos
-		m_position = readV3F1000(is);
-		pos_translator.init(m_position);
-	}
-	
-	updateNodePos();
-}
-
 
diff --git a/src/clientobject.h b/src/clientobject.h
index 8d211fef3..c90648483 100644
--- a/src/clientobject.h
+++ b/src/clientobject.h
@@ -22,7 +22,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "common_irrlicht.h"
 #include "activeobject.h"
-#include "utility.h"
 
 /*
 
@@ -36,63 +35,6 @@ Some planning
 
 */
 
-/*
-	SmoothTranslator
-*/
-
-struct SmoothTranslator
-{
-	v3f vect_old;
-	f32 anim_counter;
-	f32 anim_time;
-	f32 anim_time_counter;
-	v3f vect_show;
-	v3f vect_aim;
-
-	SmoothTranslator():
-		vect_old(0,0,0),
-		anim_counter(0),
-		anim_time(0),
-		anim_time_counter(0),
-		vect_show(0,0,0),
-		vect_aim(0,0,0)
-	{}
-
-	void init(v3f vect)
-	{
-		vect_old = vect;
-		vect_show = vect;
-		vect_aim = vect;
-	}
-
-	void update(v3f vect_new)
-	{
-		vect_old = vect_show;
-		vect_aim = vect_new;
-		if(anim_time < 0.001 || anim_time > 1.0)
-			anim_time = anim_time_counter;
-		else
-			anim_time = anim_time * 0.9 + anim_time_counter * 0.1;
-		anim_time_counter = 0;
-		anim_counter = 0;
-	}
-
-	void translate(f32 dtime)
-	{
-		anim_time_counter = anim_time_counter + dtime;
-		anim_counter = anim_counter + dtime;
-		v3f vect_move = vect_aim - vect_old;
-		f32 moveratio = 1.0;
-		if(anim_time > 0.001)
-			moveratio = anim_time_counter / anim_time;
-		// Move a bit less than should, to avoid oscillation
-		moveratio = moveratio * 0.8;
-		if(moveratio > 1.5)
-			moveratio = 1.5;
-		vect_show = vect_old + vect_move * moveratio;
-	}
-};
-
 class ClientEnvironment;
 
 class ClientActiveObject : public ActiveObject
@@ -153,164 +95,5 @@ struct DistanceSortedActiveObject
 	}
 };
 
-/*
-	TestCAO
-*/
-
-class TestCAO : public ClientActiveObject
-{
-public:
-	TestCAO();
-	virtual ~TestCAO();
-	
-	u8 getType() const
-	{
-		return ACTIVEOBJECT_TYPE_TEST;
-	}
-	
-	static ClientActiveObject* create();
-
-	void addToScene(scene::ISceneManager *smgr);
-	void removeFromScene();
-	void updateLight(u8 light_at_pos);
-	v3s16 getLightPosition();
-	void updateNodePos();
-
-	void step(float dtime, ClientEnvironment *env);
-
-	void processMessage(const std::string &data);
-
-private:
-	scene::IMeshSceneNode *m_node;
-	v3f m_position;
-};
-
-/*
-	ItemCAO
-*/
-
-class ItemCAO : public ClientActiveObject
-{
-public:
-	ItemCAO();
-	virtual ~ItemCAO();
-	
-	u8 getType() const
-	{
-		return ACTIVEOBJECT_TYPE_ITEM;
-	}
-	
-	static ClientActiveObject* create();
-
-	void addToScene(scene::ISceneManager *smgr);
-	void removeFromScene();
-	void updateLight(u8 light_at_pos);
-	v3s16 getLightPosition();
-	void updateNodePos();
-
-	void step(float dtime, ClientEnvironment *env);
-
-	void processMessage(const std::string &data);
-
-	void initialize(const std::string &data);
-	
-	core::aabbox3d<f32>* getSelectionBox()
-		{return &m_selection_box;}
-	v3f getPosition()
-		{return m_position;}
-
-private:
-	core::aabbox3d<f32> m_selection_box;
-	scene::IMeshSceneNode *m_node;
-	v3f m_position;
-	std::string m_inventorystring;
-};
-
-/*
-	RatCAO
-*/
-
-class RatCAO : public ClientActiveObject
-{
-public:
-	RatCAO();
-	virtual ~RatCAO();
-	
-	u8 getType() const
-	{
-		return ACTIVEOBJECT_TYPE_RAT;
-	}
-	
-	static ClientActiveObject* create();
-
-	void addToScene(scene::ISceneManager *smgr);
-	void removeFromScene();
-	void updateLight(u8 light_at_pos);
-	v3s16 getLightPosition();
-	void updateNodePos();
-
-	void step(float dtime, ClientEnvironment *env);
-
-	void processMessage(const std::string &data);
-
-	void initialize(const std::string &data);
-	
-	core::aabbox3d<f32>* getSelectionBox()
-		{return &m_selection_box;}
-	v3f getPosition()
-		{return m_position;}
-
-private:
-	core::aabbox3d<f32> m_selection_box;
-	scene::IMeshSceneNode *m_node;
-	v3f m_position;
-	float m_yaw;
-	SmoothTranslator pos_translator;
-};
-
-/*
-	Oerkki1CAO
-*/
-
-class Oerkki1CAO : public ClientActiveObject
-{
-public:
-	Oerkki1CAO();
-	virtual ~Oerkki1CAO();
-	
-	u8 getType() const
-	{
-		return ACTIVEOBJECT_TYPE_OERKKI1;
-	}
-	
-	static ClientActiveObject* create();
-
-	void addToScene(scene::ISceneManager *smgr);
-	void removeFromScene();
-	void updateLight(u8 light_at_pos);
-	v3s16 getLightPosition();
-	void updateNodePos();
-
-	void step(float dtime, ClientEnvironment *env);
-
-	void processMessage(const std::string &data);
-
-	void initialize(const std::string &data);
-	
-	core::aabbox3d<f32>* getSelectionBox()
-		{return &m_selection_box;}
-	v3f getPosition()
-		{return pos_translator.vect_show;}
-		//{return m_position;}
-
-private:
-	IntervalLimiter m_attack_interval;
-	core::aabbox3d<f32> m_selection_box;
-	scene::IMeshSceneNode *m_node;
-	v3f m_position;
-	float m_yaw;
-	SmoothTranslator pos_translator;
-};
-
 #endif
 
diff --git a/src/clientserver.h b/src/clientserver.h
index 7972762c0..35484fe76 100644
--- a/src/clientserver.h
+++ b/src/clientserver.h
@@ -37,7 +37,7 @@ enum ToClientCommand
 		[0] u16 TOSERVER_INIT
 		[2] u8 deployed version
 		[3] v3s16 player's position + v3f(0,BS/2,0) floatToInt'd 
-		([4] u64 map seed (new as of 2011-02-27))
+		[12] u64 map seed (new as of 2011-02-27)
 
 		NOTE: The position in here is deprecated; position is
 		      explicitly sent afterwards
diff --git a/src/collision.cpp b/src/collision.cpp
index 63186a84a..01d546284 100644
--- a/src/collision.cpp
+++ b/src/collision.cpp
@@ -182,4 +182,58 @@ collisionMoveResult collisionMoveSimple(Map *map, f32 pos_max_d,
 	return result;
 }
 
+collisionMoveResult collisionMovePrecise(Map *map, f32 pos_max_d,
+		const core::aabbox3d<f32> &box_0,
+		f32 dtime, v3f &pos_f, v3f &speed_f)
+{
+	collisionMoveResult final_result;
+
+	// Maximum time increment (for collision detection etc)
+	// time = distance / speed
+	f32 dtime_max_increment = pos_max_d / speed_f.getLength();
+	
+	// Maximum time increment is 10ms or lower
+	if(dtime_max_increment > 0.01)
+		dtime_max_increment = 0.01;
+	
+	// Don't allow overly huge dtime
+	if(dtime > 2.0)
+		dtime = 2.0;
+	
+	f32 dtime_downcount = dtime;
+
+	u32 loopcount = 0;
+	do
+	{
+		loopcount++;
+
+		f32 dtime_part;
+		if(dtime_downcount > dtime_max_increment)
+		{
+			dtime_part = dtime_max_increment;
+			dtime_downcount -= dtime_part;
+		}
+		else
+		{
+			dtime_part = dtime_downcount;
+			/*
+				Setting this to 0 (no -=dtime_part) disables an infinite loop
+				when dtime_part is so small that dtime_downcount -= dtime_part
+				does nothing
+			*/
+			dtime_downcount = 0;
+		}
+
+		collisionMoveResult result = collisionMoveSimple(map, pos_max_d,
+				box_0, dtime_part, pos_f, speed_f);
+
+		if(result.touching_ground)
+			final_result.touching_ground = true;
+	}
+	while(dtime_downcount > 0.001);
+		
+
+	return final_result;
+}
+
 
diff --git a/src/collision.h b/src/collision.h
index 9c913c6a9..6d167bb7b 100644
--- a/src/collision.h
+++ b/src/collision.h
@@ -33,10 +33,15 @@ struct collisionMoveResult
 	{}
 };
 
+// Moves using a single iteration; speed should not exceed pos_max_d/dtime
 collisionMoveResult collisionMoveSimple(Map *map, f32 pos_max_d,
 		const core::aabbox3d<f32> &box_0,
 		f32 dtime, v3f &pos_f, v3f &speed_f);
-//{return collisionMoveResult();}
+
+// Moves using as many iterations as needed
+collisionMoveResult collisionMovePrecise(Map *map, f32 pos_max_d,
+		const core::aabbox3d<f32> &box_0,
+		f32 dtime, v3f &pos_f, v3f &speed_f);
 
 enum CollisionType
 {
diff --git a/src/content_cao.cpp b/src/content_cao.cpp
new file mode 100644
index 000000000..ab20f1a95
--- /dev/null
+++ b/src/content_cao.cpp
@@ -0,0 +1,753 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2011 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 General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 "content_cao.h"
+#include "tile.h"
+#include "environment.h"
+
+/*
+	TestCAO
+*/
+
+// Prototype
+TestCAO proto_TestCAO;
+
+TestCAO::TestCAO():
+	ClientActiveObject(0),
+	m_node(NULL),
+	m_position(v3f(0,10*BS,0))
+{
+	ClientActiveObject::registerType(getType(), create);
+}
+
+TestCAO::~TestCAO()
+{
+}
+
+ClientActiveObject* TestCAO::create()
+{
+	return new TestCAO();
+}
+
+void TestCAO::addToScene(scene::ISceneManager *smgr)
+{
+	if(m_node != NULL)
+		return;
+	
+	video::IVideoDriver* driver = smgr->getVideoDriver();
+	
+	scene::SMesh *mesh = new scene::SMesh();
+	scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+	video::SColor c(255,255,255,255);
+	video::S3DVertex vertices[4] =
+	{
+		video::S3DVertex(-BS/2,-BS/4,0, 0,0,0, c, 0,1),
+		video::S3DVertex(BS/2,-BS/4,0, 0,0,0, c, 1,1),
+		video::S3DVertex(BS/2,BS/4,0, 0,0,0, c, 1,0),
+		video::S3DVertex(-BS/2,BS/4,0, 0,0,0, c, 0,0),
+	};
+	u16 indices[] = {0,1,2,2,3,0};
+	buf->append(vertices, 4, indices, 6);
+	// Set material
+	buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+	buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
+	buf->getMaterial().setTexture
+			(0, driver->getTexture(getTexturePath("rat.png").c_str()));
+	buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+	buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+	buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+	// Add to mesh
+	mesh->addMeshBuffer(buf);
+	buf->drop();
+	m_node = smgr->addMeshSceneNode(mesh, NULL);
+	mesh->drop();
+	updateNodePos();
+}
+
+void TestCAO::removeFromScene()
+{
+	if(m_node == NULL)
+		return;
+
+	m_node->remove();
+	m_node = NULL;
+}
+
+void TestCAO::updateLight(u8 light_at_pos)
+{
+}
+
+v3s16 TestCAO::getLightPosition()
+{
+	return floatToInt(m_position, BS);
+}
+
+void TestCAO::updateNodePos()
+{
+	if(m_node == NULL)
+		return;
+
+	m_node->setPosition(m_position);
+	//m_node->setRotation(v3f(0, 45, 0));
+}
+
+void TestCAO::step(float dtime, ClientEnvironment *env)
+{
+	if(m_node)
+	{
+		v3f rot = m_node->getRotation();
+		//dstream<<"dtime="<<dtime<<", rot.Y="<<rot.Y<<std::endl;
+		rot.Y += dtime * 180;
+		m_node->setRotation(rot);
+	}
+}
+
+void TestCAO::processMessage(const std::string &data)
+{
+	dstream<<"TestCAO: Got data: "<<data<<std::endl;
+	std::istringstream is(data, std::ios::binary);
+	u16 cmd;
+	is>>cmd;
+	if(cmd == 0)
+	{
+		v3f newpos;
+		is>>newpos.X;
+		is>>newpos.Y;
+		is>>newpos.Z;
+		m_position = newpos;
+		updateNodePos();
+	}
+}
+
+/*
+	ItemCAO
+*/
+
+#include "inventory.h"
+
+// Prototype
+ItemCAO proto_ItemCAO;
+
+ItemCAO::ItemCAO():
+	ClientActiveObject(0),
+	m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.),
+	m_node(NULL),
+	m_position(v3f(0,10*BS,0))
+{
+	ClientActiveObject::registerType(getType(), create);
+}
+
+ItemCAO::~ItemCAO()
+{
+}
+
+ClientActiveObject* ItemCAO::create()
+{
+	return new ItemCAO();
+}
+
+void ItemCAO::addToScene(scene::ISceneManager *smgr)
+{
+	if(m_node != NULL)
+		return;
+	
+	video::IVideoDriver* driver = smgr->getVideoDriver();
+	
+	scene::SMesh *mesh = new scene::SMesh();
+	scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+	video::SColor c(255,255,255,255);
+	video::S3DVertex vertices[4] =
+	{
+		/*video::S3DVertex(-BS/2,-BS/4,0, 0,0,0, c, 0,1),
+		video::S3DVertex(BS/2,-BS/4,0, 0,0,0, c, 1,1),
+		video::S3DVertex(BS/2,BS/4,0, 0,0,0, c, 1,0),
+		video::S3DVertex(-BS/2,BS/4,0, 0,0,0, c, 0,0),*/
+		video::S3DVertex(BS/3.,0,0, 0,0,0, c, 0,1),
+		video::S3DVertex(-BS/3.,0,0, 0,0,0, c, 1,1),
+		video::S3DVertex(-BS/3.,0+BS*2./3.,0, 0,0,0, c, 1,0),
+		video::S3DVertex(BS/3.,0+BS*2./3.,0, 0,0,0, c, 0,0),
+	};
+	u16 indices[] = {0,1,2,2,3,0};
+	buf->append(vertices, 4, indices, 6);
+	// Set material
+	buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+	buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
+	//buf->getMaterial().setTexture(0, NULL);
+	// Initialize with the stick texture
+	buf->getMaterial().setTexture
+			(0, driver->getTexture(getTexturePath("stick.png").c_str()));
+	buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+	buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+	buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+	// Add to mesh
+	mesh->addMeshBuffer(buf);
+	buf->drop();
+	m_node = smgr->addMeshSceneNode(mesh, NULL);
+	mesh->drop();
+	// Set it to use the materials of the meshbuffers directly.
+	// This is needed for changing the texture in the future
+	m_node->setReadOnlyMaterials(true);
+	updateNodePos();
+}
+
+void ItemCAO::removeFromScene()
+{
+	if(m_node == NULL)
+		return;
+
+	m_node->remove();
+	m_node = NULL;
+}
+
+void ItemCAO::updateLight(u8 light_at_pos)
+{
+	if(m_node == NULL)
+		return;
+
+	u8 li = decode_light(light_at_pos);
+	video::SColor color(255,li,li,li);
+
+	scene::IMesh *mesh = m_node->getMesh();
+	if(mesh == NULL)
+		return;
+	
+	u16 mc = mesh->getMeshBufferCount();
+	for(u16 j=0; j<mc; j++)
+	{
+		scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+		video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+		u16 vc = buf->getVertexCount();
+		for(u16 i=0; i<vc; i++)
+		{
+			vertices[i].Color = color;
+		}
+	}
+}
+
+v3s16 ItemCAO::getLightPosition()
+{
+	return floatToInt(m_position, BS);
+}
+
+void ItemCAO::updateNodePos()
+{
+	if(m_node == NULL)
+		return;
+
+	m_node->setPosition(m_position);
+}
+
+void ItemCAO::step(float dtime, ClientEnvironment *env)
+{
+	if(m_node)
+	{
+		/*v3f rot = m_node->getRotation();
+		rot.Y += dtime * 120;
+		m_node->setRotation(rot);*/
+		LocalPlayer *player = env->getLocalPlayer();
+		assert(player);
+		v3f rot = m_node->getRotation();
+		rot.Y = 180.0 - (player->getYaw());
+		m_node->setRotation(rot);
+	}
+}
+
+void ItemCAO::processMessage(const std::string &data)
+{
+	dstream<<"ItemCAO: Got message"<<std::endl;
+	std::istringstream is(data, std::ios::binary);
+	// command
+	u8 cmd = readU8(is);
+	if(cmd == 0)
+	{
+		// pos
+		m_position = readV3F1000(is);
+		updateNodePos();
+	}
+}
+
+void ItemCAO::initialize(const std::string &data)
+{
+	dstream<<"ItemCAO: Got init data"<<std::endl;
+	
+	{
+		std::istringstream is(data, std::ios::binary);
+		// version
+		u8 version = readU8(is);
+		// check version
+		if(version != 0)
+			return;
+		// pos
+		m_position = readV3F1000(is);
+		// inventorystring
+		m_inventorystring = deSerializeString(is);
+	}
+	
+	updateNodePos();
+
+	/*
+		Update image of node
+	*/
+
+	if(m_node == NULL)
+		return;
+
+	scene::IMesh *mesh = m_node->getMesh();
+
+	if(mesh == NULL)
+		return;
+	
+	scene::IMeshBuffer *buf = mesh->getMeshBuffer(0);
+
+	if(buf == NULL)
+		return;
+
+	// Create an inventory item to see what is its image
+	std::istringstream is(m_inventorystring, std::ios_base::binary);
+	video::ITexture *texture = NULL;
+	try{
+		InventoryItem *item = NULL;
+		item = InventoryItem::deSerialize(is);
+		dstream<<__FUNCTION_NAME<<": m_inventorystring=\""
+				<<m_inventorystring<<"\" -> item="<<item
+				<<std::endl;
+		if(item)
+		{
+			texture = item->getImage();
+			delete item;
+		}
+	}
+	catch(SerializationError &e)
+	{
+		dstream<<"WARNING: "<<__FUNCTION_NAME
+				<<": error deSerializing inventorystring \""
+				<<m_inventorystring<<"\""<<std::endl;
+	}
+	
+	// Set meshbuffer texture
+	buf->getMaterial().setTexture(0, texture);
+	
+}
+
+/*
+	RatCAO
+*/
+
+#include "inventory.h"
+
+// Prototype
+RatCAO proto_RatCAO;
+
+RatCAO::RatCAO():
+	ClientActiveObject(0),
+	m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS/2.,BS/3.),
+	m_node(NULL),
+	m_position(v3f(0,10*BS,0)),
+	m_yaw(0)
+{
+	ClientActiveObject::registerType(getType(), create);
+}
+
+RatCAO::~RatCAO()
+{
+}
+
+ClientActiveObject* RatCAO::create()
+{
+	return new RatCAO();
+}
+
+void RatCAO::addToScene(scene::ISceneManager *smgr)
+{
+	if(m_node != NULL)
+		return;
+	
+	video::IVideoDriver* driver = smgr->getVideoDriver();
+	
+	scene::SMesh *mesh = new scene::SMesh();
+	scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+	video::SColor c(255,255,255,255);
+	video::S3DVertex vertices[4] =
+	{
+		video::S3DVertex(-BS/2,0,0, 0,0,0, c, 0,1),
+		video::S3DVertex(BS/2,0,0, 0,0,0, c, 1,1),
+		video::S3DVertex(BS/2,BS/2,0, 0,0,0, c, 1,0),
+		video::S3DVertex(-BS/2,BS/2,0, 0,0,0, c, 0,0),
+	};
+	u16 indices[] = {0,1,2,2,3,0};
+	buf->append(vertices, 4, indices, 6);
+	// Set material
+	buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+	buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
+	//buf->getMaterial().setTexture(0, NULL);
+	buf->getMaterial().setTexture
+			(0, driver->getTexture(getTexturePath("rat.png").c_str()));
+	buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+	buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+	buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+	// Add to mesh
+	mesh->addMeshBuffer(buf);
+	buf->drop();
+	m_node = smgr->addMeshSceneNode(mesh, NULL);
+	mesh->drop();
+	// Set it to use the materials of the meshbuffers directly.
+	// This is needed for changing the texture in the future
+	m_node->setReadOnlyMaterials(true);
+	updateNodePos();
+}
+
+void RatCAO::removeFromScene()
+{
+	if(m_node == NULL)
+		return;
+
+	m_node->remove();
+	m_node = NULL;
+}
+
+void RatCAO::updateLight(u8 light_at_pos)
+{
+	if(m_node == NULL)
+		return;
+
+	u8 li = decode_light(light_at_pos);
+	video::SColor color(255,li,li,li);
+
+	scene::IMesh *mesh = m_node->getMesh();
+	if(mesh == NULL)
+		return;
+	
+	u16 mc = mesh->getMeshBufferCount();
+	for(u16 j=0; j<mc; j++)
+	{
+		scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+		video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+		u16 vc = buf->getVertexCount();
+		for(u16 i=0; i<vc; i++)
+		{
+			vertices[i].Color = color;
+		}
+	}
+}
+
+v3s16 RatCAO::getLightPosition()
+{
+	return floatToInt(m_position+v3f(0,BS*0.5,0), BS);
+}
+
+void RatCAO::updateNodePos()
+{
+	if(m_node == NULL)
+		return;
+
+	//m_node->setPosition(m_position);
+	m_node->setPosition(pos_translator.vect_show);
+
+	v3f rot = m_node->getRotation();
+	rot.Y = 180.0 - m_yaw;
+	m_node->setRotation(rot);
+}
+
+void RatCAO::step(float dtime, ClientEnvironment *env)
+{
+	pos_translator.translate(dtime);
+	updateNodePos();
+}
+
+void RatCAO::processMessage(const std::string &data)
+{
+	//dstream<<"RatCAO: Got message"<<std::endl;
+	std::istringstream is(data, std::ios::binary);
+	// command
+	u8 cmd = readU8(is);
+	if(cmd == 0)
+	{
+		// pos
+		m_position = readV3F1000(is);
+		pos_translator.update(m_position);
+		// yaw
+		m_yaw = readF1000(is);
+		updateNodePos();
+	}
+}
+
+void RatCAO::initialize(const std::string &data)
+{
+	//dstream<<"RatCAO: Got init data"<<std::endl;
+	
+	{
+		std::istringstream is(data, std::ios::binary);
+		// version
+		u8 version = readU8(is);
+		// check version
+		if(version != 0)
+			return;
+		// pos
+		m_position = readV3F1000(is);
+		pos_translator.init(m_position);
+	}
+	
+	updateNodePos();
+}
+
+/*
+	Oerkki1CAO
+*/
+
+#include "inventory.h"
+
+// Prototype
+Oerkki1CAO proto_Oerkki1CAO;
+
+Oerkki1CAO::Oerkki1CAO():
+	ClientActiveObject(0),
+	m_selection_box(-BS/3.,0.0,-BS/3., BS/3.,BS*2.,BS/3.),
+	m_node(NULL),
+	m_position(v3f(0,10*BS,0)),
+	m_yaw(0),
+	m_damage_visual_timer(0),
+	m_damage_texture_enabled(false)
+{
+	ClientActiveObject::registerType(getType(), create);
+}
+
+Oerkki1CAO::~Oerkki1CAO()
+{
+}
+
+ClientActiveObject* Oerkki1CAO::create()
+{
+	return new Oerkki1CAO();
+}
+
+void Oerkki1CAO::addToScene(scene::ISceneManager *smgr)
+{
+	if(m_node != NULL)
+		return;
+	
+	video::IVideoDriver* driver = smgr->getVideoDriver();
+	
+	scene::SMesh *mesh = new scene::SMesh();
+	scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+	video::SColor c(255,255,255,255);
+	video::S3DVertex vertices[4] =
+	{
+		video::S3DVertex(-BS/2-BS,0,0, 0,0,0, c, 0,1),
+		video::S3DVertex(BS/2+BS,0,0, 0,0,0, c, 1,1),
+		video::S3DVertex(BS/2+BS,BS*2,0, 0,0,0, c, 1,0),
+		video::S3DVertex(-BS/2-BS,BS*2,0, 0,0,0, c, 0,0),
+	};
+	u16 indices[] = {0,1,2,2,3,0};
+	buf->append(vertices, 4, indices, 6);
+	// Set material
+	buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+	buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
+	//buf->getMaterial().setTexture(0, NULL);
+	buf->getMaterial().setTexture
+			(0, driver->getTexture(getTexturePath("oerkki1.png").c_str()));
+	buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+	buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
+	buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+	// Add to mesh
+	mesh->addMeshBuffer(buf);
+	buf->drop();
+	m_node = smgr->addMeshSceneNode(mesh, NULL);
+	mesh->drop();
+	// Set it to use the materials of the meshbuffers directly.
+	// This is needed for changing the texture in the future
+	m_node->setReadOnlyMaterials(true);
+	updateNodePos();
+}
+
+void Oerkki1CAO::removeFromScene()
+{
+	if(m_node == NULL)
+		return;
+
+	m_node->remove();
+	m_node = NULL;
+}
+
+void Oerkki1CAO::updateLight(u8 light_at_pos)
+{
+	if(m_node == NULL)
+		return;
+	
+	if(light_at_pos <= 2)
+	{
+		m_node->setVisible(false);
+		return;
+	}
+
+	m_node->setVisible(true);
+
+	u8 li = decode_light(light_at_pos);
+	video::SColor color(255,li,li,li);
+
+	scene::IMesh *mesh = m_node->getMesh();
+	if(mesh == NULL)
+		return;
+	
+	u16 mc = mesh->getMeshBufferCount();
+	for(u16 j=0; j<mc; j++)
+	{
+		scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+		video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+		u16 vc = buf->getVertexCount();
+		for(u16 i=0; i<vc; i++)
+		{
+			vertices[i].Color = color;
+		}
+	}
+}
+
+v3s16 Oerkki1CAO::getLightPosition()
+{
+	return floatToInt(m_position+v3f(0,BS*1.5,0), BS);
+}
+
+void Oerkki1CAO::updateNodePos()
+{
+	if(m_node == NULL)
+		return;
+
+	//m_node->setPosition(m_position);
+	m_node->setPosition(pos_translator.vect_show);
+
+	v3f rot = m_node->getRotation();
+	rot.Y = 180.0 - m_yaw + 90.0;
+	m_node->setRotation(rot);
+}
+
+void Oerkki1CAO::step(float dtime, ClientEnvironment *env)
+{
+	pos_translator.translate(dtime);
+	updateNodePos();
+
+	LocalPlayer *player = env->getLocalPlayer();
+	assert(player);
+	
+	v3f playerpos = player->getPosition();
+	v2f playerpos_2d(playerpos.X,playerpos.Z);
+	v2f objectpos_2d(m_position.X,m_position.Z);
+
+	if(fabs(m_position.Y - playerpos.Y) < 3.0*BS &&
+			objectpos_2d.getDistanceFrom(playerpos_2d) < 1.5*BS)
+	{
+		if(m_attack_interval.step(dtime, 0.5))
+		{
+			env->damageLocalPlayer(2);
+		}
+	}
+
+	if(m_damage_visual_timer > 0)
+	{
+		if(!m_damage_texture_enabled)
+		{
+			// Enable damage texture
+			if(m_node)
+			{
+				video::IVideoDriver* driver =
+					m_node->getSceneManager()->getVideoDriver();
+				
+				scene::IMesh *mesh = m_node->getMesh();
+				if(mesh == NULL)
+					return;
+				
+				u16 mc = mesh->getMeshBufferCount();
+				for(u16 j=0; j<mc; j++)
+				{
+					scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+					buf->getMaterial().setTexture(0, driver->getTexture(
+							getTexturePath("oerkki1_damaged.png").c_str()));
+				}
+			}
+			m_damage_texture_enabled = true;
+		}
+		m_damage_visual_timer -= dtime;
+	}
+	else
+	{
+		if(m_damage_texture_enabled)
+		{
+			// Disable damage texture
+			if(m_node)
+			{
+				video::IVideoDriver* driver =
+					m_node->getSceneManager()->getVideoDriver();
+				
+				scene::IMesh *mesh = m_node->getMesh();
+				if(mesh == NULL)
+					return;
+				
+				u16 mc = mesh->getMeshBufferCount();
+				for(u16 j=0; j<mc; j++)
+				{
+					scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+					buf->getMaterial().setTexture(0, driver->getTexture(
+							getTexturePath("oerkki1.png").c_str()));
+				}
+			}
+			m_damage_texture_enabled = false;
+		}
+	}
+}
+
+void Oerkki1CAO::processMessage(const std::string &data)
+{
+	//dstream<<"Oerkki1CAO: Got message"<<std::endl;
+	std::istringstream is(data, std::ios::binary);
+	// command
+	u8 cmd = readU8(is);
+	if(cmd == 0)
+	{
+		// pos
+		m_position = readV3F1000(is);
+		pos_translator.update(m_position);
+		// yaw
+		m_yaw = readF1000(is);
+		updateNodePos();
+	}
+	else if(cmd == 1)
+	{
+		u16 damage = readU8(is);
+		m_damage_visual_timer = 1.0;
+	}
+}
+
+void Oerkki1CAO::initialize(const std::string &data)
+{
+	//dstream<<"Oerkki1CAO: Got init data"<<std::endl;
+	
+	{
+		std::istringstream is(data, std::ios::binary);
+		// version
+		u8 version = readU8(is);
+		// check version
+		if(version != 0)
+			return;
+		// pos
+		m_position = readV3F1000(is);
+		pos_translator.init(m_position);
+	}
+	
+	updateNodePos();
+}
+
+
diff --git a/src/content_cao.h b/src/content_cao.h
new file mode 100644
index 000000000..146e23b0c
--- /dev/null
+++ b/src/content_cao.h
@@ -0,0 +1,248 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2011 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 General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 CONTENT_CAO_HEADER
+#define CONTENT_CAO_HEADER
+
+#include "clientobject.h"
+#include "content_object.h"
+#include "utility.h" // For IntervalLimiter
+
+/*
+	SmoothTranslator
+*/
+
+struct SmoothTranslator
+{
+	v3f vect_old;
+	f32 anim_counter;
+	f32 anim_time;
+	f32 anim_time_counter;
+	v3f vect_show;
+	v3f vect_aim;
+
+	SmoothTranslator():
+		vect_old(0,0,0),
+		anim_counter(0),
+		anim_time(0),
+		anim_time_counter(0),
+		vect_show(0,0,0),
+		vect_aim(0,0,0)
+	{}
+
+	void init(v3f vect)
+	{
+		vect_old = vect;
+		vect_show = vect;
+		vect_aim = vect;
+	}
+
+	void update(v3f vect_new)
+	{
+		vect_old = vect_show;
+		vect_aim = vect_new;
+		if(anim_time < 0.001 || anim_time > 1.0)
+			anim_time = anim_time_counter;
+		else
+			anim_time = anim_time * 0.9 + anim_time_counter * 0.1;
+		anim_time_counter = 0;
+		anim_counter = 0;
+	}
+
+	void translate(f32 dtime)
+	{
+		anim_time_counter = anim_time_counter + dtime;
+		anim_counter = anim_counter + dtime;
+		v3f vect_move = vect_aim - vect_old;
+		f32 moveratio = 1.0;
+		if(anim_time > 0.001)
+			moveratio = anim_time_counter / anim_time;
+		// Move a bit less than should, to avoid oscillation
+		moveratio = moveratio * 0.8;
+		if(moveratio > 1.5)
+			moveratio = 1.5;
+		vect_show = vect_old + vect_move * moveratio;
+	}
+};
+
+
+/*
+	TestCAO
+*/
+
+class TestCAO : public ClientActiveObject
+{
+public:
+	TestCAO();
+	virtual ~TestCAO();
+	
+	u8 getType() const
+	{
+		return ACTIVEOBJECT_TYPE_TEST;
+	}
+	
+	static ClientActiveObject* create();
+
+	void addToScene(scene::ISceneManager *smgr);
+	void removeFromScene();
+	void updateLight(u8 light_at_pos);
+	v3s16 getLightPosition();
+	void updateNodePos();
+
+	void step(float dtime, ClientEnvironment *env);
+
+	void processMessage(const std::string &data);
+
+private:
+	scene::IMeshSceneNode *m_node;
+	v3f m_position;
+};
+
+/*
+	ItemCAO
+*/
+
+class ItemCAO : public ClientActiveObject
+{
+public:
+	ItemCAO();
+	virtual ~ItemCAO();
+	
+	u8 getType() const
+	{
+		return ACTIVEOBJECT_TYPE_ITEM;
+	}
+	
+	static ClientActiveObject* create();
+
+	void addToScene(scene::ISceneManager *smgr);
+	void removeFromScene();
+	void updateLight(u8 light_at_pos);
+	v3s16 getLightPosition();
+	void updateNodePos();
+
+	void step(float dtime, ClientEnvironment *env);
+
+	void processMessage(const std::string &data);
+
+	void initialize(const std::string &data);
+	
+	core::aabbox3d<f32>* getSelectionBox()
+		{return &m_selection_box;}
+	v3f getPosition()
+		{return m_position;}
+
+private:
+	core::aabbox3d<f32> m_selection_box;
+	scene::IMeshSceneNode *m_node;
+	v3f m_position;
+	std::string m_inventorystring;
+};
+
+/*
+	RatCAO
+*/
+
+class RatCAO : public ClientActiveObject
+{
+public:
+	RatCAO();
+	virtual ~RatCAO();
+	
+	u8 getType() const
+	{
+		return ACTIVEOBJECT_TYPE_RAT;
+	}
+	
+	static ClientActiveObject* create();
+
+	void addToScene(scene::ISceneManager *smgr);
+	void removeFromScene();
+	void updateLight(u8 light_at_pos);
+	v3s16 getLightPosition();
+	void updateNodePos();
+
+	void step(float dtime, ClientEnvironment *env);
+
+	void processMessage(const std::string &data);
+
+	void initialize(const std::string &data);
+	
+	core::aabbox3d<f32>* getSelectionBox()
+		{return &m_selection_box;}
+	v3f getPosition()
+		{return m_position;}
+
+private:
+	core::aabbox3d<f32> m_selection_box;
+	scene::IMeshSceneNode *m_node;
+	v3f m_position;
+	float m_yaw;
+	SmoothTranslator pos_translator;
+};
+
+/*
+	Oerkki1CAO
+*/
+
+class Oerkki1CAO : public ClientActiveObject
+{
+public:
+	Oerkki1CAO();
+	virtual ~Oerkki1CAO();
+	
+	u8 getType() const
+	{
+		return ACTIVEOBJECT_TYPE_OERKKI1;
+	}
+	
+	static ClientActiveObject* create();
+
+	void addToScene(scene::ISceneManager *smgr);
+	void removeFromScene();
+	void updateLight(u8 light_at_pos);
+	v3s16 getLightPosition();
+	void updateNodePos();
+
+	void step(float dtime, ClientEnvironment *env);
+
+	void processMessage(const std::string &data);
+
+	void initialize(const std::string &data);
+	
+	core::aabbox3d<f32>* getSelectionBox()
+		{return &m_selection_box;}
+	v3f getPosition()
+		{return pos_translator.vect_show;}
+		//{return m_position;}
+
+private:
+	IntervalLimiter m_attack_interval;
+	core::aabbox3d<f32> m_selection_box;
+	scene::IMeshSceneNode *m_node;
+	v3f m_position;
+	float m_yaw;
+	SmoothTranslator pos_translator;
+	float m_damage_visual_timer;
+	bool m_damage_texture_enabled;
+};
+
+
+#endif
+
diff --git a/src/content_inventory.cpp b/src/content_inventory.cpp
index 357c8ef26..7d995cb5f 100644
--- a/src/content_inventory.cpp
+++ b/src/content_inventory.cpp
@@ -19,8 +19,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "content_inventory.h"
 #include "inventory.h"
-#include "serverobject.h"
 #include "content_mapnode.h"
+//#include "serverobject.h"
+#include "content_sao.h"
 
 bool item_material_is_cookable(u8 content)
 {
diff --git a/src/content_mapblock.cpp b/src/content_mapblock.cpp
index 9ef0599d1..4c28fe3c6 100644
--- a/src/content_mapblock.cpp
+++ b/src/content_mapblock.cpp
@@ -272,7 +272,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 		/*
 			Signs on walls
 		*/
-		if(n.d == CONTENT_SIGN_WALL)
+		else if(n.d == CONTENT_SIGN_WALL)
 		{
 			u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio));
 			video::SColor c(255,l,l,l);
diff --git a/src/content_mapnode.cpp b/src/content_mapnode.cpp
index 38356599f..79e10fd61 100644
--- a/src/content_mapnode.cpp
+++ b/src/content_mapnode.cpp
@@ -224,7 +224,6 @@ void content_mapnode_init()
 	// Deprecated
 	i = CONTENT_COALSTONE;
 	f = &content_features(i);
-	//f->translate_to = new MapNode(CONTENT_STONE, MINERAL_COAL);
 	f->setAllTextures("stone.png^mineral_coal.png");
 	f->is_ground_content = true;
 	setStoneLikeDiggingProperties(f->digging_properties, 1.5);
diff --git a/src/content_object.h b/src/content_object.h
new file mode 100644
index 000000000..ecabd8a38
--- /dev/null
+++ b/src/content_object.h
@@ -0,0 +1,29 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2011 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 General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 CONTENT_OBJECT_HEADER
+#define CONTENT_OBJECT_HEADER
+
+#define ACTIVEOBJECT_TYPE_TEST 1
+#define ACTIVEOBJECT_TYPE_ITEM 2
+#define ACTIVEOBJECT_TYPE_RAT 3
+#define ACTIVEOBJECT_TYPE_OERKKI1 4
+
+#endif
+
diff --git a/src/content_sao.cpp b/src/content_sao.cpp
new file mode 100644
index 000000000..fc6f208a0
--- /dev/null
+++ b/src/content_sao.cpp
@@ -0,0 +1,694 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2011 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 General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 "content_sao.h"
+#include "collision.h"
+#include "environment.h"
+
+/*
+	TestSAO
+*/
+
+// Prototype
+TestSAO proto_TestSAO(NULL, 0, v3f(0,0,0));
+
+TestSAO::TestSAO(ServerEnvironment *env, u16 id, v3f pos):
+	ServerActiveObject(env, id, pos),
+	m_timer1(0),
+	m_age(0)
+{
+	ServerActiveObject::registerType(getType(), create);
+}
+
+ServerActiveObject* TestSAO::create(ServerEnvironment *env, u16 id, v3f pos,
+		const std::string &data)
+{
+	return new TestSAO(env, id, pos);
+}
+
+void TestSAO::step(float dtime, bool send_recommended)
+{
+	m_age += dtime;
+	if(m_age > 10)
+	{
+		m_removed = true;
+		return;
+	}
+
+	m_base_position.Y += dtime * BS * 2;
+	if(m_base_position.Y > 8*BS)
+		m_base_position.Y = 2*BS;
+
+	if(send_recommended == false)
+		return;
+
+	m_timer1 -= dtime;
+	if(m_timer1 < 0.0)
+	{
+		m_timer1 += 0.125;
+		//dstream<<"TestSAO: id="<<getId()<<" sending data"<<std::endl;
+
+		std::string data;
+
+		data += itos(0); // 0 = position
+		data += " ";
+		data += itos(m_base_position.X);
+		data += " ";
+		data += itos(m_base_position.Y);
+		data += " ";
+		data += itos(m_base_position.Z);
+
+		ActiveObjectMessage aom(getId(), false, data);
+		m_messages_out.push_back(aom);
+	}
+}
+
+
+/*
+	ItemSAO
+*/
+
+// Prototype
+ItemSAO proto_ItemSAO(NULL, 0, v3f(0,0,0), "");
+
+ItemSAO::ItemSAO(ServerEnvironment *env, u16 id, v3f pos,
+		const std::string inventorystring):
+	ServerActiveObject(env, id, pos),
+	m_inventorystring(inventorystring),
+	m_speed_f(0,0,0),
+	m_last_sent_position(0,0,0)
+{
+	ServerActiveObject::registerType(getType(), create);
+}
+
+ServerActiveObject* ItemSAO::create(ServerEnvironment *env, u16 id, v3f pos,
+		const std::string &data)
+{
+	std::istringstream is(data, std::ios::binary);
+	char buf[1];
+	// read version
+	is.read(buf, 1);
+	u8 version = buf[0];
+	// check if version is supported
+	if(version != 0)
+		return NULL;
+	std::string inventorystring = deSerializeString(is);
+	dstream<<"ItemSAO::create(): Creating item \""
+			<<inventorystring<<"\""<<std::endl;
+	return new ItemSAO(env, id, pos, inventorystring);
+}
+
+void ItemSAO::step(float dtime, bool send_recommended)
+{
+	assert(m_env);
+
+	const float interval = 0.2;
+	if(m_move_interval.step(dtime, interval)==false)
+		return;
+	dtime = interval;
+	
+	core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
+	collisionMoveResult moveresult;
+	// Apply gravity
+	m_speed_f += v3f(0, -dtime*9.81*BS, 0);
+	// Maximum movement without glitches
+	f32 pos_max_d = BS*0.25;
+	// Limit speed
+	if(m_speed_f.getLength()*dtime > pos_max_d)
+		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
+	v3f pos_f = getBasePosition();
+	v3f pos_f_old = pos_f;
+	moveresult = collisionMoveSimple(&m_env->getMap(), pos_max_d,
+			box, dtime, pos_f, m_speed_f);
+	
+	if(send_recommended == false)
+		return;
+
+	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+	{
+		setBasePosition(pos_f);
+		m_last_sent_position = pos_f;
+
+		std::ostringstream os(std::ios::binary);
+		char buf[6];
+		// command (0 = update position)
+		buf[0] = 0;
+		os.write(buf, 1);
+		// pos
+		writeS32((u8*)buf, m_base_position.X*1000);
+		os.write(buf, 4);
+		writeS32((u8*)buf, m_base_position.Y*1000);
+		os.write(buf, 4);
+		writeS32((u8*)buf, m_base_position.Z*1000);
+		os.write(buf, 4);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+std::string ItemSAO::getClientInitializationData()
+{
+	std::ostringstream os(std::ios::binary);
+	char buf[6];
+	// version
+	buf[0] = 0;
+	os.write(buf, 1);
+	// pos
+	writeS32((u8*)buf, m_base_position.X*1000);
+	os.write(buf, 4);
+	writeS32((u8*)buf, m_base_position.Y*1000);
+	os.write(buf, 4);
+	writeS32((u8*)buf, m_base_position.Z*1000);
+	os.write(buf, 4);
+	// inventorystring
+	os<<serializeString(m_inventorystring);
+	return os.str();
+}
+
+std::string ItemSAO::getStaticData()
+{
+	dstream<<__FUNCTION_NAME<<std::endl;
+	std::ostringstream os(std::ios::binary);
+	char buf[1];
+	// version
+	buf[0] = 0;
+	os.write(buf, 1);
+	// inventorystring
+	os<<serializeString(m_inventorystring);
+	return os.str();
+}
+
+InventoryItem * ItemSAO::createInventoryItem()
+{
+	try{
+		std::istringstream is(m_inventorystring, std::ios_base::binary);
+		InventoryItem *item = InventoryItem::deSerialize(is);
+		dstream<<__FUNCTION_NAME<<": m_inventorystring=\""
+				<<m_inventorystring<<"\" -> item="<<item
+				<<std::endl;
+		return item;
+	}
+	catch(SerializationError &e)
+	{
+		dstream<<__FUNCTION_NAME<<": serialization error: "
+				<<"m_inventorystring=\""<<m_inventorystring<<"\""<<std::endl;
+		return NULL;
+	}
+}
+
+
+/*
+	RatSAO
+*/
+
+// Prototype
+RatSAO proto_RatSAO(NULL, 0, v3f(0,0,0));
+
+RatSAO::RatSAO(ServerEnvironment *env, u16 id, v3f pos):
+	ServerActiveObject(env, id, pos),
+	m_is_active(false),
+	m_speed_f(0,0,0)
+{
+	ServerActiveObject::registerType(getType(), create);
+
+	m_oldpos = v3f(0,0,0);
+	m_last_sent_position = v3f(0,0,0);
+	m_yaw = 0;
+	m_counter1 = 0;
+	m_counter2 = 0;
+	m_age = 0;
+	m_touching_ground = false;
+}
+
+ServerActiveObject* RatSAO::create(ServerEnvironment *env, u16 id, v3f pos,
+		const std::string &data)
+{
+	std::istringstream is(data, std::ios::binary);
+	char buf[1];
+	// read version
+	is.read(buf, 1);
+	u8 version = buf[0];
+	// check if version is supported
+	if(version != 0)
+		return NULL;
+	return new RatSAO(env, id, pos);
+}
+
+void RatSAO::step(float dtime, bool send_recommended)
+{
+	assert(m_env);
+
+	if(m_is_active == false)
+	{
+		if(m_inactive_interval.step(dtime, 0.5)==false)
+			return;
+	}
+
+	/*
+		The AI
+	*/
+
+	/*m_age += dtime;
+	if(m_age > 60)
+	{
+		// Die
+		m_removed = true;
+		return;
+	}*/
+
+	// Apply gravity
+	m_speed_f.Y -= dtime*9.81*BS;
+
+	/*
+		Move around if some player is close
+	*/
+	bool player_is_close = false;
+	// Check connected players
+	core::list<Player*> players = m_env->getPlayers(true);
+	core::list<Player*>::Iterator i;
+	for(i = players.begin();
+			i != players.end(); i++)
+	{
+		Player *player = *i;
+		v3f playerpos = player->getPosition();
+		if(m_base_position.getDistanceFrom(playerpos) < BS*10.0)
+		{
+			player_is_close = true;
+			break;
+		}
+	}
+
+	m_is_active = player_is_close;
+	
+	if(player_is_close == false)
+	{
+		m_speed_f.X = 0;
+		m_speed_f.Z = 0;
+	}
+	else
+	{
+		// Move around
+		v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
+		f32 speed = 2*BS;
+		m_speed_f.X = speed * dir.X;
+		m_speed_f.Z = speed * dir.Z;
+
+		if(m_touching_ground && (m_oldpos - m_base_position).getLength()
+				< dtime*speed/2)
+		{
+			m_counter1 -= dtime;
+			if(m_counter1 < 0.0)
+			{
+				m_counter1 += 1.0;
+				m_speed_f.Y = 5.0*BS;
+			}
+		}
+
+		{
+			m_counter2 -= dtime;
+			if(m_counter2 < 0.0)
+			{
+				m_counter2 += (float)(myrand()%100)/100*3.0;
+				m_yaw += ((float)(myrand()%200)-100)/100*180;
+				m_yaw = wrapDegrees(m_yaw);
+			}
+		}
+	}
+	
+	m_oldpos = m_base_position;
+
+	/*
+		Move it, with collision detection
+	*/
+
+	core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
+	collisionMoveResult moveresult;
+	// Maximum movement without glitches
+	f32 pos_max_d = BS*0.25;
+	// Limit speed
+	if(m_speed_f.getLength()*dtime > pos_max_d)
+		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
+	v3f pos_f = getBasePosition();
+	v3f pos_f_old = pos_f;
+	moveresult = collisionMoveSimple(&m_env->getMap(), pos_max_d,
+			box, dtime, pos_f, m_speed_f);
+	m_touching_ground = moveresult.touching_ground;
+	
+	setBasePosition(pos_f);
+
+	if(send_recommended == false)
+		return;
+
+	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+	{
+		m_last_sent_position = pos_f;
+
+		std::ostringstream os(std::ios::binary);
+		// command (0 = update position)
+		writeU8(os, 0);
+		// pos
+		writeV3F1000(os, m_base_position);
+		// yaw
+		writeF1000(os, m_yaw);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+std::string RatSAO::getClientInitializationData()
+{
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	// pos
+	writeV3F1000(os, m_base_position);
+	return os.str();
+}
+
+std::string RatSAO::getStaticData()
+{
+	//dstream<<__FUNCTION_NAME<<std::endl;
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	return os.str();
+}
+
+InventoryItem* RatSAO::createPickedUpItem()
+{
+	std::istringstream is("CraftItem rat 1", std::ios_base::binary);
+	InventoryItem *item = InventoryItem::deSerialize(is);
+	return item;
+}
+
+/*
+	Oerkki1SAO
+*/
+
+// Y is copied, X and Z change is limited
+void accelerate_xz(v3f &speed, v3f target_speed, f32 max_increase)
+{
+	v3f d_wanted = target_speed - speed;
+	d_wanted.Y = 0;
+	f32 dl_wanted = d_wanted.getLength();
+	f32 dl = dl_wanted;
+	if(dl > max_increase)
+		dl = max_increase;
+	
+	v3f d = d_wanted.normalize() * dl;
+
+	speed.X += d.X;
+	speed.Z += d.Z;
+	speed.Y = target_speed.Y;
+}
+
+// Prototype
+Oerkki1SAO proto_Oerkki1SAO(NULL, 0, v3f(0,0,0));
+
+Oerkki1SAO::Oerkki1SAO(ServerEnvironment *env, u16 id, v3f pos):
+	ServerActiveObject(env, id, pos),
+	m_is_active(false),
+	m_speed_f(0,0,0)
+{
+	ServerActiveObject::registerType(getType(), create);
+
+	m_oldpos = v3f(0,0,0);
+	m_last_sent_position = v3f(0,0,0);
+	m_yaw = 0;
+	m_counter1 = 0;
+	m_counter2 = 0;
+	m_age = 0;
+	m_touching_ground = false;
+	m_hp = 20;
+	m_after_jump_timer = 0;
+}
+
+ServerActiveObject* Oerkki1SAO::create(ServerEnvironment *env, u16 id, v3f pos,
+		const std::string &data)
+{
+	std::istringstream is(data, std::ios::binary);
+	// read version
+	u8 version = readU8(is);
+	// read hp
+	u8 hp = readU8(is);
+	// check if version is supported
+	if(version != 0)
+		return NULL;
+	Oerkki1SAO *o = new Oerkki1SAO(env, id, pos);
+	o->m_hp = hp;
+	return o;
+}
+
+void Oerkki1SAO::step(float dtime, bool send_recommended)
+{
+	assert(m_env);
+
+	if(m_is_active == false)
+	{
+		if(m_inactive_interval.step(dtime, 0.5)==false)
+			return;
+	}
+
+	/*
+		The AI
+	*/
+
+	m_age += dtime;
+	if(m_age > 120)
+	{
+		// Die
+		m_removed = true;
+		return;
+	}
+
+	m_after_jump_timer -= dtime;
+
+	v3f old_speed = m_speed_f;
+
+	// Apply gravity
+	m_speed_f.Y -= dtime*9.81*BS;
+
+	/*
+		Move around if some player is close
+	*/
+	bool player_is_close = false;
+	bool player_is_too_close = false;
+	v3f near_player_pos;
+	// Check connected players
+	core::list<Player*> players = m_env->getPlayers(true);
+	core::list<Player*>::Iterator i;
+	for(i = players.begin();
+			i != players.end(); i++)
+	{
+		Player *player = *i;
+		v3f playerpos = player->getPosition();
+		f32 dist = m_base_position.getDistanceFrom(playerpos);
+		if(dist < BS*1.45)
+		{
+			player_is_too_close = true;
+			near_player_pos = playerpos;
+			break;
+		}
+		else if(dist < BS*15.0)
+		{
+			player_is_close = true;
+			near_player_pos = playerpos;
+		}
+	}
+
+	m_is_active = player_is_close;
+
+	v3f target_speed = m_speed_f;
+
+	if(!player_is_close)
+	{
+		target_speed = v3f(0,0,0);
+	}
+	else
+	{
+		// Move around
+
+		v3f ndir = near_player_pos - m_base_position;
+		ndir.Y = 0;
+		ndir.normalize();
+
+		f32 nyaw = 180./PI*atan2(ndir.Z,ndir.X);
+		if(nyaw < m_yaw - 180)
+			nyaw += 360;
+		else if(nyaw > m_yaw + 180)
+			nyaw -= 360;
+		m_yaw = 0.95*m_yaw + 0.05*nyaw;
+		m_yaw = wrapDegrees(m_yaw);
+		
+		f32 speed = 2*BS;
+
+		if((m_touching_ground || m_after_jump_timer > 0.0)
+				&& !player_is_too_close)
+		{
+			v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
+			target_speed.X = speed * dir.X;
+			target_speed.Z = speed * dir.Z;
+		}
+
+		if(m_touching_ground && (m_oldpos - m_base_position).getLength()
+				< dtime*speed/2)
+		{
+			m_counter1 -= dtime;
+			if(m_counter1 < 0.0)
+			{
+				m_counter1 += 0.2;
+				// Jump
+				target_speed.Y = 5.0*BS;
+				m_after_jump_timer = 1.0;
+			}
+		}
+
+		{
+			m_counter2 -= dtime;
+			if(m_counter2 < 0.0)
+			{
+				m_counter2 += (float)(myrand()%100)/100*3.0;
+				//m_yaw += ((float)(myrand()%200)-100)/100*180;
+				m_yaw += ((float)(myrand()%200)-100)/100*90;
+				m_yaw = wrapDegrees(m_yaw);
+			}
+		}
+	}
+	
+	if((m_speed_f - target_speed).getLength() > BS*4 || player_is_too_close)
+		accelerate_xz(m_speed_f, target_speed, dtime*BS*8);
+	else
+		accelerate_xz(m_speed_f, target_speed, dtime*BS*4);
+	
+	m_oldpos = m_base_position;
+
+	/*
+		Move it, with collision detection
+	*/
+
+	core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*5./3.,BS/3.);
+	collisionMoveResult moveresult;
+	// Maximum movement without glitches
+	f32 pos_max_d = BS*0.25;
+	/*// Limit speed
+	if(m_speed_f.getLength()*dtime > pos_max_d)
+		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);*/
+	v3f pos_f = getBasePosition();
+	v3f pos_f_old = pos_f;
+	moveresult = collisionMovePrecise(&m_env->getMap(), pos_max_d,
+			box, dtime, pos_f, m_speed_f);
+	m_touching_ground = moveresult.touching_ground;
+	
+	// Do collision damage
+	float tolerance = BS*12;
+	float factor = BS*0.5;
+	v3f speed_diff = old_speed - m_speed_f;
+	// Increase effect in X and Z
+	speed_diff.X *= 2;
+	speed_diff.Z *= 2;
+	float vel = speed_diff.getLength();
+	if(vel > tolerance)
+	{
+		f32 damage_f = (vel - tolerance)/BS*factor;
+		u16 damage = (u16)(damage_f+0.5);
+		doDamage(damage);
+	}
+
+	setBasePosition(pos_f);
+
+	if(send_recommended == false && m_speed_f.getLength() < 3.0*BS)
+		return;
+
+	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+	{
+		m_last_sent_position = pos_f;
+
+		std::ostringstream os(std::ios::binary);
+		// command (0 = update position)
+		writeU8(os, 0);
+		// pos
+		writeV3F1000(os, m_base_position);
+		// yaw
+		writeF1000(os, m_yaw);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+std::string Oerkki1SAO::getClientInitializationData()
+{
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	// pos
+	writeV3F1000(os, m_base_position);
+	return os.str();
+}
+
+std::string Oerkki1SAO::getStaticData()
+{
+	//dstream<<__FUNCTION_NAME<<std::endl;
+	std::ostringstream os(std::ios::binary);
+	// version
+	writeU8(os, 0);
+	// hp
+	writeU8(os, m_hp);
+	return os.str();
+}
+
+u16 Oerkki1SAO::punch(const std::string &toolname, v3f dir)
+{
+	m_speed_f += dir*12*BS;
+
+	u16 amount = 5;
+	doDamage(amount);
+	return 65536/100;
+}
+
+void Oerkki1SAO::doDamage(u16 d)
+{
+	dstream<<"oerkki damage: "<<d<<std::endl;
+	
+	if(d < m_hp)
+	{
+		m_hp -= d;
+	}
+	else
+	{
+		// Die
+		m_hp = 0;
+		m_removed = true;
+	}
+
+	{
+		std::ostringstream os(std::ios::binary);
+		// command (1 = damage)
+		writeU8(os, 1);
+		// amount
+		writeU8(os, d);
+		// create message and add to list
+		ActiveObjectMessage aom(getId(), false, os.str());
+		m_messages_out.push_back(aom);
+	}
+}
+
+
diff --git a/src/content_sao.h b/src/content_sao.h
new file mode 100644
index 000000000..030232a9e
--- /dev/null
+++ b/src/content_sao.h
@@ -0,0 +1,118 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2011 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 General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 CONTENT_SAO_HEADER
+#define CONTENT_SAO_HEADER
+
+#include "serverobject.h"
+#include "content_object.h"
+
+class TestSAO : public ServerActiveObject
+{
+public:
+	TestSAO(ServerEnvironment *env, u16 id, v3f pos);
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_TEST;}
+	static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+private:
+	float m_timer1;
+	float m_age;
+};
+
+class ItemSAO : public ServerActiveObject
+{
+public:
+	ItemSAO(ServerEnvironment *env, u16 id, v3f pos,
+			const std::string inventorystring);
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_ITEM;}
+	static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+	std::string getClientInitializationData();
+	std::string getStaticData();
+	InventoryItem* createInventoryItem();
+	InventoryItem* createPickedUpItem(){return createInventoryItem();}
+private:
+	std::string m_inventorystring;
+	v3f m_speed_f;
+	v3f m_last_sent_position;
+	IntervalLimiter m_move_interval;
+};
+
+class RatSAO : public ServerActiveObject
+{
+public:
+	RatSAO(ServerEnvironment *env, u16 id, v3f pos);
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_RAT;}
+	static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+	std::string getClientInitializationData();
+	std::string getStaticData();
+	InventoryItem* createPickedUpItem();
+private:
+	bool m_is_active;
+	IntervalLimiter m_inactive_interval;
+	v3f m_speed_f;
+	v3f m_oldpos;
+	v3f m_last_sent_position;
+	float m_yaw;
+	float m_counter1;
+	float m_counter2;
+	float m_age;
+	bool m_touching_ground;
+};
+
+class Oerkki1SAO : public ServerActiveObject
+{
+public:
+	Oerkki1SAO(ServerEnvironment *env, u16 id, v3f pos);
+	u8 getType() const
+		{return ACTIVEOBJECT_TYPE_OERKKI1;}
+	static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
+			const std::string &data);
+	void step(float dtime, bool send_recommended);
+	std::string getClientInitializationData();
+	std::string getStaticData();
+	InventoryItem* createPickedUpItem(){return NULL;}
+	u16 punch(const std::string &toolname, v3f dir);
+private:
+	void doDamage(u16 d);
+
+	bool m_is_active;
+	IntervalLimiter m_inactive_interval;
+	v3f m_speed_f;
+	v3f m_oldpos;
+	v3f m_last_sent_position;
+	float m_yaw;
+	float m_counter1;
+	float m_counter2;
+	float m_age;
+	bool m_touching_ground;
+	u8 m_hp;
+	float m_after_jump_timer;
+};
+
+
+#endif
+
diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp
index ac1983ed1..cbc78ad3f 100644
--- a/src/defaultsettings.cpp
+++ b/src/defaultsettings.cpp
@@ -42,6 +42,8 @@ void set_default_settings()
 	g_settings.setDefault("keymap_rangeselect", "KEY_KEY_R");
 	g_settings.setDefault("keymap_freemove", "KEY_KEY_K");
 	g_settings.setDefault("keymap_fastmove", "KEY_KEY_J");
+	g_settings.setDefault("keymap_frametime_graph", "KEY_F1");
+	g_settings.setDefault("keymap_screenshot", "KEY_F12");
 	// Some (temporary) keys for debugging
 	g_settings.setDefault("keymap_special1", "KEY_KEY_E");
 	g_settings.setDefault("keymap_print_debug_stacks", "KEY_KEY_P");
@@ -54,7 +56,7 @@ void set_default_settings()
 	g_settings.setDefault("screenH", "600");
 	g_settings.setDefault("address", "");
 	g_settings.setDefault("random_input", "false");
-	g_settings.setDefault("client_delete_unused_sectors_timeout", "1200");
+	g_settings.setDefault("client_unload_unused_data_timeout", "600");
 	g_settings.setDefault("enable_fog", "true");
 	g_settings.setDefault("new_style_water", "false");
 	g_settings.setDefault("new_style_leaves", "true");
@@ -72,6 +74,7 @@ void set_default_settings()
 	g_settings.setDefault("farmesh_distance", "40");
 	g_settings.setDefault("enable_clouds", "true");
 	g_settings.setDefault("invisible_stone", "false");
+	g_settings.setDefault("screenshot_path", ".");
 
 	// Server stuff
 	g_settings.setDefault("enable_experimental", "false");
@@ -81,17 +84,19 @@ void set_default_settings()
 	g_settings.setDefault("default_password", "");
 	g_settings.setDefault("default_privs", "build, shout");
 	g_settings.setDefault("profiler_print_interval", "0");
+	g_settings.setDefault("enable_mapgen_debug_info", "false");
 
 	g_settings.setDefault("objectdata_interval", "0.2");
 	g_settings.setDefault("active_object_range", "2");
 	//g_settings.setDefault("max_simultaneous_block_sends_per_client", "1");
+	// This causes frametime jitter on client side, or does it?
 	g_settings.setDefault("max_simultaneous_block_sends_per_client", "2");
 	g_settings.setDefault("max_simultaneous_block_sends_server_total", "8");
 	g_settings.setDefault("max_block_send_distance", "8");
 	g_settings.setDefault("max_block_generate_distance", "8");
 	g_settings.setDefault("time_send_interval", "20");
 	g_settings.setDefault("time_speed", "96");
-	g_settings.setDefault("server_unload_unused_sectors_timeout", "60");
+	g_settings.setDefault("server_unload_unused_data_timeout", "60");
 	g_settings.setDefault("server_map_save_interval", "60");
 	g_settings.setDefault("full_block_send_enable_min_time_from_building", "2.0");
 	//g_settings.setDefault("dungeon_rarity", "0.025");
diff --git a/src/environment.cpp b/src/environment.cpp
index e2c704259..0dab54213 100644
--- a/src/environment.cpp
+++ b/src/environment.cpp
@@ -22,7 +22,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "porting.h"
 #include "collision.h"
 #include "content_mapnode.h"
-
+#include "mapblock.h"
+#include "serverobject.h"
+#include "content_sao.h"
 
 Environment::Environment():
 	m_time_of_day(9000)
@@ -659,14 +661,6 @@ void ServerEnvironment::step(float dtime)
 	}
 	
 	/*
-		Let map update it's timers
-	*/
-	{
-		//TimeTaker timer("Server m_map->timerUpdate()");
-		m_map->timerUpdate(dtime);
-	}
-
-	/*
 		Handle players
 	*/
 	for(core::list<Player*>::Iterator i = m_players.begin();
@@ -867,6 +861,9 @@ void ServerEnvironment::step(float dtime)
 			MapBlock *block = m_map->getBlockNoCreateNoEx(p);
 			if(block==NULL)
 				continue;
+
+			// Reset block usage timer
+			block->resetUsageTimer();
 			
 			// Set current time as timestamp
 			block->setTimestampNoChangedFlag(m_game_time);
@@ -986,8 +983,14 @@ void ServerEnvironment::step(float dtime)
 			// Don't step if is to be removed or stored statically
 			if(obj->m_removed || obj->m_pending_deactivation)
 				continue;
-			// Step object, putting messages directly to the queue
-			obj->step(dtime, m_active_object_messages, send_recommended);
+			// Step object
+			obj->step(dtime, send_recommended);
+			// Read messages from object
+			while(obj->m_messages_out.size() > 0)
+			{
+				m_active_object_messages.push_back(
+						obj->m_messages_out.pop_front());
+			}
 		}
 	}
 	
@@ -1242,7 +1245,7 @@ u16 ServerEnvironment::addActiveObjectRaw(ServerActiveObject *object,
 			block->setChangedFlag();
 	}
 	else{
-		dstream<<"WARNING: Server: Could not find a block for "
+		dstream<<"WARNING: ServerEnv: Could not find a block for "
 				<<"storing newly added static active object"<<std::endl;
 	}
 
@@ -1414,7 +1417,20 @@ void ServerEnvironment::deactivateFarObjects(bool force_delete)
 		StaticObject s_obj(obj->getType(), objectpos, staticdata);
 		// Add to the block where the object is located in
 		v3s16 blockpos = getNodeBlockPos(floatToInt(objectpos, BS));
-		MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
+		// Get or generate the block
+		MapBlock *block = m_map->emergeBlock(blockpos);
+
+		/*MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
+		if(block == NULL)
+		{
+			// Block not found. Is the old block still ok?
+			if(oldblock)
+				block = oldblock;
+			// Load from disk or generate
+			else
+				block = m_map->emergeBlock(blockpos);
+		}*/
+
 		if(block)
 		{
 			block->m_static_objects.insert(0, s_obj);
@@ -1422,17 +1438,9 @@ void ServerEnvironment::deactivateFarObjects(bool force_delete)
 			obj->m_static_exists = true;
 			obj->m_static_block = block->getPos();
 		}
-		// If not possible, add back to previous block
-		else if(oldblock)
-		{
-			oldblock->m_static_objects.insert(0, s_obj);
-			oldblock->setChangedFlag();
-			obj->m_static_exists = true;
-			obj->m_static_block = oldblock->getPos();
-		}
 		else{
-			dstream<<"WARNING: Server: Could not find a block for "
-					<<"storing static object"<<std::endl;
+			dstream<<"WARNING: ServerEnv: Could not find or generate "
+					<<"a block for storing static object"<<std::endl;
 			obj->m_static_exists = false;
 			continue;
 		}
@@ -1526,11 +1534,6 @@ void ClientEnvironment::step(float dtime)
 	bool free_move = g_settings.getBool("free_move");
 	bool footprints = g_settings.getBool("footprints");
 
-	{
-		//TimeTaker timer("Client m_map->timerUpdate()");
-		m_map->timerUpdate(dtime);
-	}
-	
 	// Get local player
 	LocalPlayer *lplayer = getLocalPlayer();
 	assert(lplayer);
@@ -1728,17 +1731,21 @@ void ClientEnvironment::step(float dtime)
 		ClientActiveObject* obj = i.getNode()->getValue();
 		// Step object
 		obj->step(dtime, this);
-		// Update lighting
-		//u8 light = LIGHT_MAX;
-		u8 light = 0;
-		try{
-			// Get node at head
-			v3s16 p = obj->getLightPosition();
-			MapNode n = m_map->getNode(p);
-			light = n.getLightBlend(getDayNightRatio());
+
+		if(m_active_object_light_update_interval.step(dtime, 0.21))
+		{
+			// Update lighting
+			//u8 light = LIGHT_MAX;
+			u8 light = 0;
+			try{
+				// Get node at head
+				v3s16 p = obj->getLightPosition();
+				MapNode n = m_map->getNode(p);
+				light = n.getLightBlend(getDayNightRatio());
+			}
+			catch(InvalidPositionException &e) {}
+			obj->updateLight(light);
 		}
-		catch(InvalidPositionException &e) {}
-		obj->updateLight(light);
 	}
 }
 
@@ -1926,6 +1933,22 @@ ClientEnvEvent ClientEnvironment::getClientEvent()
 	return m_client_event_queue.pop_front();
 }
 
+void ClientEnvironment::drawPostFx(video::IVideoDriver* driver, v3f camera_pos)
+{
+	/*LocalPlayer *player = getLocalPlayer();
+	assert(player);
+	v3f pos_f = player->getPosition() + v3f(0,BS*1.625,0);*/
+	v3f pos_f = camera_pos;
+	v3s16 p_nodes = floatToInt(pos_f, BS);
+	MapNode n = m_map->getNodeNoEx(p_nodes);
+	if(n.d == CONTENT_WATER || n.d == CONTENT_WATERSOURCE)
+	{
+		v2u32 ss = driver->getScreenSize();
+		core::rect<s32> rect(0,0, ss.X, ss.Y);
+		driver->draw2DRectangle(video::SColor(64, 100, 100, 200), rect);
+	}
+}
+
 #endif // #ifndef SERVER
 
 
diff --git a/src/environment.h b/src/environment.h
index eac69d222..b6767858a 100644
--- a/src/environment.h
+++ b/src/environment.h
@@ -36,6 +36,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "map.h"
 #include <ostream>
 #include "utility.h"
+#include "activeobject.h"
+
+class Server;
+class ActiveBlockModifier;
+class ServerActiveObject;
 
 class Environment
 {
@@ -118,11 +123,6 @@ private:
 	This is not thread-safe. Server uses an environment mutex.
 */
 
-#include "serverobject.h"
-
-class Server;
-class ActiveBlockModifier;
-
 class ServerEnvironment : public Environment
 {
 public:
@@ -406,12 +406,16 @@ public:
 	
 	// Get event from queue. CEE_NONE is returned if queue is empty.
 	ClientEnvEvent getClientEvent();
+
+	// Post effects
+	void drawPostFx(video::IVideoDriver* driver, v3f camera_pos);
 	
 private:
 	ClientMap *m_map;
 	scene::ISceneManager *m_smgr;
 	core::map<u16, ClientActiveObject*> m_active_objects;
 	Queue<ClientEnvEvent> m_client_event_queue;
+	IntervalLimiter m_active_object_light_update_interval;
 };
 
 #endif
diff --git a/src/farmesh.cpp b/src/farmesh.cpp
index a35983729..2cd922434 100644
--- a/src/farmesh.cpp
+++ b/src/farmesh.cpp
@@ -280,7 +280,8 @@ void FarMesh::render()
 		if(h_avg < WATER_LEVEL*BS && h_max < (WATER_LEVEL+5)*BS)
 		{
 			//c = video::SColor(255,59,86,146);
-			c = video::SColor(255,82,120,204);
+			//c = video::SColor(255,82,120,204);
+			c = video::SColor(255,74,105,170);
 
 			/*// Set to water level
 			for(u32 i=0; i<4; i++)
diff --git a/src/game.cpp b/src/game.cpp
index 367abebe1..d77b45da5 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -30,8 +30,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "clouds.h"
 #include "keycode.h"
 #include "farmesh.h"
+#include "mapblock.h"
 
-// TODO: Move content-aware stuff to separate file
+/*
+	TODO: Move content-aware stuff to separate file by adding properties
+	      and virtual interfaces
+*/
 #include "content_mapnode.h"
 #include "content_nodemeta.h"
 
@@ -672,6 +676,34 @@ void update_skybox(video::IVideoDriver* driver,
 	}
 }
 
+/*
+	Draws a screen with a single text on it.
+	Text will be removed when the screen is drawn the next time.
+*/
+/*gui::IGUIStaticText **/
+void draw_load_screen(const std::wstring &text,
+		video::IVideoDriver* driver, gui::IGUIFont* font)
+{
+	v2u32 screensize = driver->getScreenSize();
+	const wchar_t *loadingtext = text.c_str();
+	core::vector2d<u32> textsize_u = font->getDimension(loadingtext);
+	core::vector2d<s32> textsize(textsize_u.X,textsize_u.Y);
+	core::vector2d<s32> center(screensize.X/2, screensize.Y/2);
+	core::rect<s32> textrect(center - textsize/2, center + textsize/2);
+
+	gui::IGUIStaticText *guitext = guienv->addStaticText(
+			loadingtext, textrect, false, false);
+	guitext->setTextAlignment(gui::EGUIA_CENTER, gui::EGUIA_UPPERLEFT);
+
+	driver->beginScene(true, true, video::SColor(255,0,0,0));
+	guienv->drawAll();
+	driver->endScene();
+	
+	guitext->remove();
+	
+	//return guitext;
+}
+
 void the_game(
 	bool &kill,
 	bool random_input,
@@ -688,13 +720,18 @@ void the_game(
 {
 	video::IVideoDriver* driver = device->getVideoDriver();
 	scene::ISceneManager* smgr = device->getSceneManager();
+	
+	// Calculate text height using the font
+	u32 text_height = font->getDimension(L"Random test string").Height;
 
 	v2u32 screensize(0,0);
 	v2u32 last_screensize(0,0);
 	screensize = driver->getScreenSize();
 
 	const s32 hotbar_itemcount = 8;
-	const s32 hotbar_imagesize = 36;
+	//const s32 hotbar_imagesize = 36;
+	//const s32 hotbar_imagesize = 64;
+	s32 hotbar_imagesize = 48;
 	
 	// The color of the sky
 
@@ -705,20 +742,10 @@ void the_game(
 	/*
 		Draw "Loading" screen
 	*/
-	const wchar_t *loadingtext = L"Loading and connecting...";
-	u32 text_height = font->getDimension(loadingtext).Height;
-	core::vector2d<s32> center(screensize.X/2, screensize.Y/2);
-	core::vector2d<s32> textsize(300, text_height);
-	core::rect<s32> textrect(center - textsize/2, center + textsize/2);
-
-	gui::IGUIStaticText *gui_loadingtext = guienv->addStaticText(
-			loadingtext, textrect, false, false);
-	gui_loadingtext->setTextAlignment(gui::EGUIA_CENTER, gui::EGUIA_UPPERLEFT);
-
-	driver->beginScene(true, true, video::SColor(255,0,0,0));
-	guienv->drawAll();
-	driver->endScene();
+	/*gui::IGUIStaticText *gui_loadingtext = */
+	//draw_load_screen(L"Loading and connecting...", driver, font);
 
+	draw_load_screen(L"Loading...", driver, font);
 	
 	/*
 		Create server.
@@ -726,6 +753,7 @@ void the_game(
 	*/
 	SharedPtr<Server> server;
 	if(address == ""){
+		draw_load_screen(L"Creating server...", driver, font);
 		std::cout<<DTIME<<"Creating server"<<std::endl;
 		server = new Server(map_dir);
 		server->start(port);
@@ -735,9 +763,11 @@ void the_game(
 		Create client
 	*/
 
+	draw_load_screen(L"Creating client...", driver, font);
 	std::cout<<DTIME<<"Creating client"<<std::endl;
 	Client client(device, playername.c_str(), password, draw_control);
 			
+	draw_load_screen(L"Resolving address...", driver, font);
 	Address connect_address(0,0,0,0, port);
 	try{
 		if(address == "")
@@ -751,7 +781,7 @@ void the_game(
 		std::cout<<DTIME<<"Couldn't resolve address"<<std::endl;
 		//return 0;
 		error_message = L"Couldn't resolve address";
-		gui_loadingtext->remove();
+		//gui_loadingtext->remove();
 		return;
 	}
 
@@ -784,11 +814,17 @@ void the_game(
 			{
 				break;
 			}
+			
+			std::wostringstream ss;
+			ss<<L"Connecting to server... (timeout in ";
+			ss<<(int)(10.0 - time_counter + 1.0);
+			ss<<L" seconds)";
+			draw_load_screen(ss.str(), driver, font);
 
-			// Update screen
+			/*// Update screen
 			driver->beginScene(true, true, video::SColor(255,0,0,0));
 			guienv->drawAll();
-			driver->endScene();
+			driver->endScene();*/
 
 			// Update client and server
 
@@ -818,7 +854,7 @@ void the_game(
 			error_message = L"Connection timed out.";
 			std::cout<<DTIME<<"Timed out."<<std::endl;
 		}
-		gui_loadingtext->remove();
+		//gui_loadingtext->remove();
 		return;
 	}
 
@@ -880,7 +916,7 @@ void the_game(
 		Move into game
 	*/
 	
-	gui_loadingtext->remove();
+	//gui_loadingtext->remove();
 
 	/*
 		Add some gui stuff
@@ -973,6 +1009,8 @@ void the_game(
 
 	while(device->run() && kill == false)
 	{
+		//std::cerr<<"frame"<<std::endl;
+
 		if(g_gamecallback->disconnect_requested)
 		{
 			g_gamecallback->disconnect_requested = false;
@@ -998,6 +1036,14 @@ void the_game(
 		screensize = driver->getScreenSize();
 		v2s32 displaycenter(screensize.X/2,screensize.Y/2);
 		//bool screensize_changed = screensize != last_screensize;
+
+		// Resize hotbar
+		if(screensize.Y <= 600)
+			hotbar_imagesize = 32;
+		else if(screensize.Y <= 1024)
+			hotbar_imagesize = 48;
+		else
+			hotbar_imagesize = 64;
 		
 		// Hilight boxes collected during the loop and displayed
 		core::list< core::aabbox3d<f32> > hilightboxes;
@@ -1090,7 +1136,7 @@ void the_game(
 		*/
 
 		static f32 dtime_avg1 = 0.0;
-		dtime_avg1 = dtime_avg1 * 0.98 + dtime * 0.02;
+		dtime_avg1 = dtime_avg1 * 0.96 + dtime * 0.04;
 		f32 dtime_jitter1 = dtime - dtime_avg1;
 
 		static f32 dtime_jitter1_max_sample = 0.0;
@@ -1254,6 +1300,38 @@ void the_game(
 				chat_lines.push_back(ChatLine(L"fast_move enabled"));
 			}
 		}
+		else if(input->wasKeyDown(getKeySetting("keymap_frametime_graph")))
+		{
+			if(g_settings.getBool("frametime_graph"))
+			{
+				g_settings.set("frametime_graph","false");
+				chat_lines.push_back(ChatLine(L"frametime_graph disabled"));
+			}
+			else
+			{
+				g_settings.set("frametime_graph","true");
+				chat_lines.push_back(ChatLine(L"frametime_graph enabled"));
+			}
+		}
+		else if(input->wasKeyDown(getKeySetting("keymap_screenshot")))
+		{
+			irr::video::IImage* const image = driver->createScreenShot(); 
+			if (image) { 
+				irr::c8 filename[256]; 
+				snprintf(filename, 256, "%s/screenshot_%u.png", 
+						 g_settings.get("screenshot_path").c_str(),
+						 device->getTimer()->getRealTime()); 
+				if (driver->writeImageToFile(image, filename)) {
+					std::wstringstream sstr;
+					sstr<<"Saved screenshot to '"<<filename<<"'";
+					dstream<<"Saved screenshot to '"<<filename<<"'"<<std::endl;
+					chat_lines.push_back(ChatLine(sstr.str()));
+				} else{
+					dstream<<"Failed to save screenshot '"<<filename<<"'"<<std::endl;
+				}
+				image->drop(); 
+			}			 
+		}
 
 		// Item selection with mouse wheel
 		{
@@ -2194,6 +2272,13 @@ void the_game(
 					core::rect<s32>(0,0,screensize.X,screensize.Y),
 					NULL);
 		}
+
+		/*
+			Environment post fx
+		*/
+		{
+			client.getEnv()->drawPostFx(driver, camera_position);
+		}
 		
 		/*
 			End scene
@@ -2237,15 +2322,12 @@ void the_game(
 		generator and other stuff quits
 	*/
 	{
-		const wchar_t *shuttingdowntext = L"Shutting down stuff...";
-		gui::IGUIStaticText *gui_shuttingdowntext = guienv->addStaticText(
-				shuttingdowntext, textrect, false, false);
-		gui_shuttingdowntext->setTextAlignment(gui::EGUIA_CENTER,
-				gui::EGUIA_UPPERLEFT);
-		driver->beginScene(true, true, video::SColor(255,0,0,0));
+		/*gui::IGUIStaticText *gui_shuttingdowntext = */
+		draw_load_screen(L"Shutting down stuff...", driver, font);
+		/*driver->beginScene(true, true, video::SColor(255,0,0,0));
 		guienv->drawAll();
 		driver->endScene();
-		gui_shuttingdowntext->remove();
+		gui_shuttingdowntext->remove();*/
 	}
 }
 
diff --git a/src/inventory.cpp b/src/inventory.cpp
index 0c76ed845..fec51a759 100644
--- a/src/inventory.cpp
+++ b/src/inventory.cpp
@@ -30,6 +30,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "serverobject.h"
 #include "content_mapnode.h"
 #include "content_inventory.h"
+#include "content_sao.h"
 
 /*
 	InventoryItem
diff --git a/src/main.cpp b/src/main.cpp
index 41da310f4..698c5fc71 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -27,6 +27,33 @@ NOTE: Global locale is now set at initialization
 NOTE: If VBO (EHM_STATIC) is used, remember to explicitly free the

       hardware buffer (it is not freed automatically)

 

+NOTE: A random to-do list saved here as documentation:

+A list of "active blocks" in which stuff happens. (+=done)

+	+ Add a never-resetted game timer to the server

+	+ Add a timestamp value to blocks

+	+ The simple rule: All blocks near some player are "active"

+	- Do stuff in real time in active blocks

+		+ Handle objects

+		- Grow grass, delete leaves without a tree

+		- Spawn some mobs based on some rules

+		- Transform cobble to mossy cobble near water

+		- Run a custom script

+		- ...And all kinds of other dynamic stuff

+	+ Keep track of when a block becomes active and becomes inactive

+	+ When a block goes inactive:

+		+ Store objects statically to block

+		+ Store timer value as the timestamp

+	+ When a block goes active:

+		+ Create active objects out of static objects

+		- Simulate the results of what would have happened if it would have

+		  been active for all the time

+		  	- Grow a lot of grass and so on

+	+ Initially it is fine to send information about every active object

+	  to every player. Eventually it should be modified to only send info

+	  about the nearest ones.

+	  	+ This was left to be done by the old system and it sends only the

+		  nearest ones.

+

 Old, wild and random suggestions that probably won't be done:

 -------------------------------------------------------------

 

@@ -73,9 +100,6 @@ SUGG: Make the amount of blocks sending to client and the total
 SUGG: Meshes of blocks could be split into 6 meshes facing into

       different directions and then only those drawn that need to be

 

-SUGG: Calculate lighting per vertex to get a lighting effect like in

-      bartwe's game

-

 SUGG: Background music based on cellular automata?

       http://www.earslap.com/projectslab/otomata

 

@@ -90,6 +114,8 @@ SUGG: Make a system for pregenerating quick information for mapblocks, so
 	  or even generated.

 

 SUGG: Erosion simulation at map generation time

+    - This might be plausible if larger areas of map were pregenerated

+	  without lighting (which is slow)

 	- Simulate water flows, which would carve out dirt fast and

 	  then turn stone into gravel and sand and relocate it.

 	- How about relocating minerals, too? Coal and gold in

@@ -100,6 +126,16 @@ SUGG: Erosion simulation at map generation time
 	- Simulate rock falling from cliffs when water has removed

 	  enough solid rock from the bottom

 

+SUGG: For non-mapgen FarMesh: Add a per-sector database to store surface

+      stuff as simple flags/values

+      - Light?

+	  - A building?

+	  And at some point make the server send this data to the client too,

+	  instead of referring to the noise functions

+	  - Ground height

+	  - Surface ground type

+	  - Trees?

+

 Gaming ideas:

 -------------

 

@@ -173,12 +209,13 @@ SUGG: Make fetching sector's blocks more efficient when rendering
       sectors that have very large amounts of blocks (on client)

 	  - Is this necessary at all?

 

-TODO: Flowing water animation

-

 SUGG: Draw cubes in inventory directly with 3D drawing commands, so that

       animating them is easier.

 

 SUGG: Option for enabling proper alpha channel for textures

+

+TODO: Flowing water animation

+

 TODO: A setting for enabling bilinear filtering for textures

 

 TODO: Better control of draw_control.wanted_max_blocks

@@ -193,6 +230,12 @@ TODO: Artificial (night) light could be more yellow colored than sunlight.
 

 SUGG: Somehow make the night less colorful

 

+TODO: Occlusion culling

+      - At the same time, move some of the renderMap() block choosing code

+        to the same place as where the new culling happens.

+      - Shoot some rays per frame and when ready, make a new list of

+	    blocks for usage of renderMap and give it a new pointer to it.

+

 Configuration:

 --------------

 

@@ -231,6 +274,7 @@ FIXME: Server sometimes goes into some infinite PeerNotFoundException loop
 * Fix the problem with the server constantly saving one or a few

   blocks? List the first saved block, maybe it explains.

   - It is probably caused by oscillating water

+  - TODO: Investigate if this still happens (this is a very old one)

 * Make a small history check to transformLiquids to detect and log

   continuous oscillations, in such detail that they can be fixed.

 

@@ -238,44 +282,12 @@ FIXME: The new optimized map sending doesn't sometimes send enough blocks
        from big caves and such

 FIXME: Block send distance configuration does not take effect for some reason

 

-TODO: Map saving should be done by EmergeThread

-

-SUGG: Map unloading based on sector reference is not very good, it keeps

-	unnecessary stuff in memory. I guess. Investigate this.

-

-TODO: When block is placed and it has param_type==CPT_FACEDIR_SIMPLE, set

-      the direction accordingly.

-

 Environment:

 ------------

 

-TODO: A list of "active blocks" in which stuff happens. (+=done)

-	+ Add a never-resetted game timer to the server

-	+ Add a timestamp value to blocks

-	+ The simple rule: All blocks near some player are "active"

-	- Do stuff in real time in active blocks

-		+ Handle objects

-		TODO: Make proper hooks in here

-		- Grow grass, delete leaves without a tree

-		- Spawn some mobs based on some rules

-		- Transform cobble to mossy cobble near water

-		- Run a custom script

-		- ...And all kinds of other dynamic stuff

-	+ Keep track of when a block becomes active and becomes inactive

-	+ When a block goes inactive:

-		+ Store objects statically to block

-		+ Store timer value as the timestamp

-	+ When a block goes active:

-		+ Create active objects out of static objects

-		TODO: Make proper hooks in here

-		- Simulate the results of what would have happened if it would have

-		  been active for all the time

-		  	- Grow a lot of grass and so on

-	+ Initially it is fine to send information about every active object

-	  to every player. Eventually it should be modified to only send info

-	  about the nearest ones.

-	  	+ This was left to be done by the old system and it sends only the

-		  nearest ones.

+TODO: Add proper hooks to when adding and removing active blocks

+

+TODO: Finish the ActiveBlockModifier stuff and use it for something

 

 Objects:

 --------

@@ -287,6 +299,7 @@ TODO: Get rid of MapBlockObjects and use only ActiveObjects
 

 SUGG: MovingObject::move and Player::move are basically the same.

       combine them.

+	- NOTE: This is a bit tricky because player has the sneaking ability

 	- NOTE: Player::move is more up-to-date.

 	- NOTE: There is a simple move implementation now in collision.{h,cpp}

 	- NOTE: MovingObject will be deleted (MapBlockObject)

@@ -305,59 +318,25 @@ TODO: Mineral and ground material properties
 TODO: Flowing water to actually contain flow direction information

       - There is a space for this - it just has to be implemented.

 

-SUGG: Try out the notch way of generating maps, that is, make bunches

-      of low-res 3d noise and interpolate linearly.

-

-Mapgen v2 (the current one):

-* Possibly add some kind of erosion and other stuff

-* Better water generation (spread it to underwater caverns but don't

-  fill dungeons that don't touch big water masses)

-* When generating a chunk and the neighboring chunk doesn't have mud

-  and stuff yet and the ground is fairly flat, the mud will flow to

-  the other chunk making nasty straight walls when the other chunk

-  is generated. Fix it. Maybe just a special case if the ground is

-  flat?

-* Consider not updating this one and make a good mainly block-based

-  generator

-

-SUGG: Make two "modified states", one that forces the block to be saved at

-	the next save event, and one that makes the block to be saved at exit

-	time.

-

-TODO: Add a not_fully_generated flag to MapBlock, which would be set for

-	blocks that contain eg. trees from neighboring generations but haven't

-	been generated itself. This is required for the future generator.

+TODO: Consider smoothening cave floors after generating them

 

 Misc. stuff:

 ------------

-- Make sure server handles removing grass when a block is placed (etc)

-    - The client should not do it by itself

-- Block cube placement around player's head

-- Protocol version field

-- Consider getting some textures from cisoun's texture pack

-	- Ask from Cisoun

-- Make sure the fence implementation and data format is good

-	- Think about using same bits for material for fences and doors, for

-	example

-- Finish the ActiveBlockModifier stuff and use it for something

-- Move mineral to param2, increment map serialization version, add conversion

-

-TODO: Add a per-sector database to store surface stuff as simple flags/values

-      - Light?

-	  - A building?

-	  And at some point make the server send this data to the client too,

-	  instead of referring to the noise functions

-	  - Ground height

-	  - Surface ground type

-	  - Trees?

+TODO: Make sure server handles removing grass when a block is placed (etc)

+      - The client should not do it by itself

+	  - NOTE: I think nobody does it currently...

+TODO: Block cube placement around player's head

+TODO: Protocol version field

+TODO: Think about using same bits for material for fences and doors, for

+	  example

+TODO: Move mineral to param2, increment map serialization version, add

+      conversion

 

 TODO: Restart irrlicht completely when coming back to main menu from game.

 	- This gets rid of everything that is stored in irrlicht's caches.

 

 TODO: Merge bahamada's audio stuff (clean patch available)

 

-TODO: Merge spongie's chest/furnace direction (by hand)

-

 TODO: Merge key configuration menu (no clean patch available)

 

 Making it more portable:

@@ -375,9 +354,6 @@ Stuff to do after release:
 Doing currently:

 ----------------

 

-TODO: Use MapBlock::resetUsageTimer() in appropriate places

-      (on client and server)

-

 ======================================================================

 

 */

@@ -406,16 +382,12 @@ TODO: Use MapBlock::resetUsageTimer() in appropriate places
 

 #include <iostream>

 #include <fstream>

-//#include <jmutexautolock.h>

 #include <locale.h>

 #include "main.h"

 #include "common_irrlicht.h"

 #include "debug.h"

-//#include "map.h"

-//#include "player.h"

 #include "test.h"

 #include "server.h"

-//#include "client.h"

 #include "constants.h"

 #include "porting.h"

 #include "gettime.h"

@@ -424,11 +396,10 @@ TODO: Use MapBlock::resetUsageTimer() in appropriate places
 #include "config.h"

 #include "guiMainMenu.h"

 #include "mineral.h"

-//#include "noise.h"

-//#include "tile.h"

 #include "materials.h"

 #include "game.h"

 #include "keycode.h"

+#include "tile.h"

 

 // This makes textures

 ITextureSource *g_texturesource = NULL;

diff --git a/src/main.h b/src/main.h
index 450525c26..b2dee1494 100644
--- a/src/main.h
+++ b/src/main.h
@@ -25,7 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 extern Settings g_settings;
 
 // This makes and maps textures
-#include "tile.h"
+class ITextureSource;
 extern ITextureSource *g_texturesource;
 
 // Global profiler
diff --git a/src/map.cpp b/src/map.cpp
index d3e898357..10e1302b1 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -18,18 +18,16 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 #include "map.h"
+#include "mapsector.h"
+#include "mapblock.h"
 #include "main.h"
-#include "jmutexautolock.h"
 #include "client.h"
 #include "filesys.h"
 #include "utility.h"
 #include "voxel.h"
 #include "porting.h"
-#include "mineral.h"
-#include "noise.h"
-#include "serverobject.h"
-#include "content_mapnode.h"
 #include "mapgen.h"
+#include "nodemetadata.h"
 
 extern "C" {
 	#include "sqlite3.h"
@@ -122,42 +120,23 @@ MapSector * Map::getSectorNoGenerate(v2s16 p)
 	return sector;
 }
 
-MapBlock * Map::getBlockNoCreate(v3s16 p3d)
-{	
-	v2s16 p2d(p3d.X, p3d.Z);
-	MapSector * sector = getSectorNoGenerate(p2d);
-
-	MapBlock *block = sector->getBlockNoCreate(p3d.Y);
-
-	return block;
-}
-
 MapBlock * Map::getBlockNoCreateNoEx(v3s16 p3d)
 {
-	try
-	{
-		v2s16 p2d(p3d.X, p3d.Z);
-		MapSector * sector = getSectorNoGenerate(p2d);
-		MapBlock *block = sector->getBlockNoCreate(p3d.Y);
-		return block;
-	}
-	catch(InvalidPositionException &e)
-	{
+	v2s16 p2d(p3d.X, p3d.Z);
+	MapSector * sector = getSectorNoGenerateNoEx(p2d);
+	if(sector == NULL)
 		return NULL;
-	}
+	MapBlock *block = sector->getBlockNoCreateNoEx(p3d.Y);
+	return block;
 }
 
-/*MapBlock * Map::getBlockCreate(v3s16 p3d)
-{
-	v2s16 p2d(p3d.X, p3d.Z);
-	MapSector * sector = getSectorCreate(p2d);
-	assert(sector);
-	MapBlock *block = sector->getBlockNoCreate(p3d.Y);
-	if(block)
-		return block;
-	block = sector->createBlankBlock(p3d.Y);
+MapBlock * Map::getBlockNoCreate(v3s16 p3d)
+{	
+	MapBlock *block = getBlockNoCreateNoEx(p3d);
+	if(block == NULL)
+		throw InvalidPositionException();
 	return block;
-}*/
+}
 
 bool Map::isNodeUnderground(v3s16 p)
 {
@@ -172,6 +151,45 @@ bool Map::isNodeUnderground(v3s16 p)
 	}
 }
 
+bool Map::isValidPosition(v3s16 p)
+{
+	v3s16 blockpos = getNodeBlockPos(p);
+	MapBlock *block = getBlockNoCreate(blockpos);
+	return (block != NULL);
+}
+
+// Returns a CONTENT_IGNORE node if not found
+MapNode Map::getNodeNoEx(v3s16 p)
+{
+	v3s16 blockpos = getNodeBlockPos(p);
+	MapBlock *block = getBlockNoCreateNoEx(blockpos);
+	if(block == NULL)
+		return MapNode(CONTENT_IGNORE);
+	v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
+	return block->getNodeNoCheck(relpos);
+}
+
+// throws InvalidPositionException if not found
+MapNode Map::getNode(v3s16 p)
+{
+	v3s16 blockpos = getNodeBlockPos(p);
+	MapBlock *block = getBlockNoCreateNoEx(blockpos);
+	if(block == NULL)
+		throw InvalidPositionException();
+	v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
+	return block->getNodeNoCheck(relpos);
+}
+
+// throws InvalidPositionException if not found
+void Map::setNode(v3s16 p, MapNode & n)
+{
+	v3s16 blockpos = getNodeBlockPos(p);
+	MapBlock *block = getBlockNoCreate(blockpos);
+	v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
+	block->setNodeNoCheck(relpos, n);
+}
+
+
 /*
 	Goes recursively through the neighbours of the node.
 
@@ -737,6 +755,25 @@ void Map::updateLighting(enum LightBank bank,
 
 		}
 	}
+	
+	/*
+		Enable this to disable proper lighting for speeding up map
+		generation for testing or whatever
+	*/
+#if 0
+	//if(g_settings.get(""))
+	{
+		core::map<v3s16, MapBlock*>::Iterator i;
+		i = blocks_to_update.getIterator();
+		for(; i.atEnd() == false; i++)
+		{
+			MapBlock *block = i.getNode()->getValue();
+			v3s16 p = block->getPos();
+			block->setLightingExpired(false);
+		}
+		return;
+	}
+#endif
 
 #if 0
 	{
@@ -879,7 +916,7 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 	{
 	}
 
-#if 1
+#if 0
 	/*
 		If the new node is solid and there is grass below, change it to mud
 	*/
@@ -1357,9 +1394,14 @@ bool Map::dayNightDiffed(v3s16 blockpos)
 /*
 	Updates usage timers
 */
-void Map::timerUpdate(float dtime)
+void Map::timerUpdate(float dtime, float unload_timeout,
+		core::list<v3s16> *unloaded_blocks)
 {
-	//JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
+	bool save_before_unloading = (mapType() == MAPTYPE_SERVER);
+	
+	core::list<v2s16> sector_deletion_queue;
+	u32 deleted_blocks_count = 0;
+	u32 saved_blocks_count = 0;
 
 	core::map<v2s16, MapSector*>::Iterator si;
 
@@ -1368,48 +1410,85 @@ void Map::timerUpdate(float dtime)
 	{
 		MapSector *sector = si.getNode()->getValue();
 
+		bool all_blocks_deleted = true;
+
 		core::list<MapBlock*> blocks;
 		sector->getBlocks(blocks);
 		for(core::list<MapBlock*>::Iterator i = blocks.begin();
 				i != blocks.end(); i++)
 		{
-			(*i)->incrementUsageTimer(dtime);
+			MapBlock *block = (*i);
+			
+			block->incrementUsageTimer(dtime);
+			
+			if(block->getUsageTimer() > unload_timeout)
+			{
+				v3s16 p = block->getPos();
+
+				// Save if modified
+				if(block->getModified() != MOD_STATE_CLEAN
+						&& save_before_unloading)
+				{
+					saveBlock(block);
+					saved_blocks_count++;
+				}
+
+				// Delete from memory
+				sector->deleteBlock(block);
+
+				if(unloaded_blocks)
+					unloaded_blocks->push_back(p);
+
+				deleted_blocks_count++;
+			}
+			else
+			{
+				all_blocks_deleted = false;
+			}
+		}
+
+		if(all_blocks_deleted)
+		{
+			sector_deletion_queue.push_back(si.getNode()->getKey());
 		}
 	}
+	
+	// Finally delete the empty sectors
+	deleteSectors(sector_deletion_queue);
+	
+	if(deleted_blocks_count != 0)
+	{
+		PrintInfo(dstream); // ServerMap/ClientMap:
+		dstream<<"Unloaded "<<deleted_blocks_count
+				<<" blocks from memory";
+		if(save_before_unloading)
+			dstream<<", of which "<<saved_blocks_count<<" were written";
+		dstream<<"."<<std::endl;
+	}
 }
 
-void Map::deleteSectors(core::list<v2s16> &list, bool only_blocks)
+void Map::deleteSectors(core::list<v2s16> &list)
 {
 	core::list<v2s16>::Iterator j;
 	for(j=list.begin(); j!=list.end(); j++)
 	{
 		MapSector *sector = m_sectors[*j];
-		if(only_blocks)
-		{
-			sector->deleteBlocks();
-		}
-		else
-		{
-			/*
-				If sector is in sector cache, remove it from there
-			*/
-			if(m_sector_cache == sector)
-			{
-				m_sector_cache = NULL;
-			}
-			/*
-				Remove from map and delete
-			*/
-			m_sectors.remove(*j);
-			delete sector;
-		}
+		// If sector is in sector cache, remove it from there
+		if(m_sector_cache == sector)
+			m_sector_cache = NULL;
+		// Remove from map and delete
+		m_sectors.remove(*j);
+		delete sector;
 	}
 }
 
-u32 Map::unloadUnusedData(float timeout, bool only_blocks,
+#if 0
+void Map::unloadUnusedData(float timeout,
 		core::list<v3s16> *deleted_blocks)
 {
 	core::list<v2s16> sector_deletion_queue;
+	u32 deleted_blocks_count = 0;
+	u32 saved_blocks_count = 0;
 
 	core::map<v2s16, MapSector*>::Iterator si = m_sectors.getIterator();
 	for(; si.atEnd() == false; si++)
@@ -1424,15 +1503,18 @@ u32 Map::unloadUnusedData(float timeout, bool only_blocks,
 				i != blocks.end(); i++)
 		{
 			MapBlock *block = (*i);
-
+			
 			if(block->getUsageTimer() > timeout)
 			{
 				// Save if modified
 				if(block->getModified() != MOD_STATE_CLEAN)
+				{
 					saveBlock(block);
-				// Unload
-				sector->removeBlock(block);
-				delete block;
+					saved_blocks_count++;
+				}
+				// Delete from memory
+				sector->deleteBlock(block);
+				deleted_blocks_count++;
 			}
 			else
 			{
@@ -1446,37 +1528,16 @@ u32 Map::unloadUnusedData(float timeout, bool only_blocks,
 		}
 	}
 
-#if 0
-	core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
-	for(; i.atEnd() == false; i++)
-	{
-		MapSector *sector = i.getNode()->getValue();
-		/*
-			Delete sector from memory if it hasn't been used in a long time
-		*/
-		if(sector->usage_timer > timeout)
-		{
-			sector_deletion_queue.push_back(i.getNode()->getKey());
+	deleteSectors(sector_deletion_queue);
 
-			if(deleted_blocks != NULL)
-			{
-				// Collect positions of blocks of sector
-				MapSector *sector = i.getNode()->getValue();
-				core::list<MapBlock*> blocks;
-				sector->getBlocks(blocks);
-				for(core::list<MapBlock*>::Iterator i = blocks.begin();
-						i != blocks.end(); i++)
-				{
-					deleted_blocks->push_back((*i)->getPos());
-				}
-			}
-		}
-	}
-#endif
+	dstream<<"Map: Unloaded "<<deleted_blocks_count<<" blocks from memory"
+			<<", of which "<<saved_blocks_count<<" were wr."
+			<<std::endl;
 
-	deleteSectors(sector_deletion_queue, only_blocks);
-	return sector_deletion_queue.getSize();
+	//return sector_deletion_queue.getSize();
+	//return deleted_blocks_count;
 }
+#endif
 
 void Map::PrintInfo(std::ostream &out)
 {
@@ -1503,7 +1564,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 		*/
 		v3s16 p0 = m_transforming_liquid.pop_front();
 
-		MapNode n0 = getNode(p0);
+		MapNode n0 = getNodeNoEx(p0);
 
 		// Don't deal with non-liquids
 		if(content_liquid(n0.d) == false)
@@ -1538,13 +1599,10 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 			};
 			for(u16 i=0; i<5; i++)
 			{
-				try
-				{
-
 				bool from_top = (i==0);
 
 				v3s16 p2 = p0 + dirs_from[i];
-				MapNode n2 = getNode(p2);
+				MapNode n2 = getNodeNoEx(p2);
 
 				if(content_liquid(n2.d))
 				{
@@ -1593,10 +1651,6 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 					if(new_liquid_level > new_liquid_level_max)
 						new_liquid_level_max = new_liquid_level;
 				}
-
-				}catch(InvalidPositionException &e)
-				{
-				}
 			} //for
 
 			/*
@@ -1645,20 +1699,13 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 				};
 				for(u16 i=0; i<6; i++)
 				{
-					try
-					{
-
 					v3s16 p2 = p0 + dirs[i];
 
-					MapNode n2 = getNode(p2);
+					MapNode n2 = getNodeNoEx(p2);
 					if(content_flowing_liquid(n2.d))
 					{
 						m_transforming_liquid.push_back(p2);
 					}
-
-					}catch(InvalidPositionException &e)
-					{
-					}
 				}
 			}
 		}
@@ -1679,9 +1726,6 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 		};
 		for(u16 i=0; i<5; i++)
 		{
-			try
-			{
-
 			bool to_bottom = (i == 0);
 
 			// If liquid is at lowest possible height, it's not going
@@ -1707,7 +1751,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 
 			v3s16 p2 = p0 + dirs_to[i];
 
-			MapNode n2 = getNode(p2);
+			MapNode n2 = getNodeNoEx(p2);
 			//dstream<<"[1] n2.param="<<(int)n2.param<<std::endl;
 
 			if(content_liquid(n2.d))
@@ -1773,10 +1817,6 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 			// If n2_changed to bottom, don't flow anywhere else
 			if(to_bottom && flowed && !is_source)
 				break;
-
-			}catch(InvalidPositionException &e)
-			{
-			}
 		}
 
 		loopcount++;
@@ -1972,7 +2012,6 @@ ServerMap::~ServerMap()
 	{
 		if(m_map_saving_enabled)
 		{
-			//save(false);
 			// Save only changed parts
 			save(true);
 			dstream<<DTIME<<"Server: saved map to "<<m_savedir<<std::endl;
@@ -2079,6 +2118,8 @@ MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
 		return NULL;
 	}
 
+	bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
+
 	/*dstream<<"Resulting vmanip:"<<std::endl;
 	data->vmanip.print(dstream);*/
 	
@@ -2091,10 +2132,11 @@ MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
 		//TimeTaker timer("finishBlockMake() blitBackAll");
 		data->vmanip->blitBackAll(&changed_blocks);
 	}
-#if 1
-	dstream<<"finishBlockMake: changed_blocks.size()="
-			<<changed_blocks.size()<<std::endl;
-#endif
+
+	if(enable_mapgen_debug_info)
+		dstream<<"finishBlockMake: changed_blocks.size()="
+				<<changed_blocks.size()<<std::endl;
+
 	/*
 		Copy transforming liquid information
 	*/
@@ -2128,28 +2170,38 @@ MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
 	/*
 		NOTE: Lighting and object adding shouldn't really be here, but
 		lighting is a bit tricky to move properly to makeBlock.
-		TODO: Do this the right way anyway.
+		TODO: Do this the right way anyway, that is, move it to makeBlock.
+		      - There needs to be some way for makeBlock to report back if
+			    the lighting update is going further down because of the
+				new block blocking light
 	*/
 
 	/*
 		Update lighting
+		NOTE: This takes ~60ms, TODO: Investigate why
 	*/
-
-	core::map<v3s16, MapBlock*> lighting_update_blocks;
-	// Center block
-	lighting_update_blocks.insert(block->getPos(), block);
-#if 0
-	// All modified blocks
-	for(core::map<v3s16, MapBlock*>::Iterator
-			i = changed_blocks.getIterator();
-			i.atEnd() == false; i++)
 	{
-		lighting_update_blocks.insert(i.getNode()->getKey(),
-				i.getNode()->getValue());
+		TimeTaker t("finishBlockMake lighting update");
+
+		core::map<v3s16, MapBlock*> lighting_update_blocks;
+		// Center block
+		lighting_update_blocks.insert(block->getPos(), block);
+	#if 0
+		// All modified blocks
+		for(core::map<v3s16, MapBlock*>::Iterator
+				i = changed_blocks.getIterator();
+				i.atEnd() == false; i++)
+		{
+			lighting_update_blocks.insert(i.getNode()->getKey(),
+					i.getNode()->getValue());
+		}
+	#endif
+		updateLighting(lighting_update_blocks, changed_blocks);
+
+		if(enable_mapgen_debug_info == false)
+			t.stop(true); // Hide output
 	}
-#endif
-	updateLighting(lighting_update_blocks, changed_blocks);
-	
+
 	/*
 		Add random objects to block
 	*/
@@ -2262,6 +2314,8 @@ MapBlock * ServerMap::generateBlock(
 			<<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
 			<<std::endl;*/
 	
+	bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
+
 	TimeTaker timer("generateBlock");
 	
 	//MapBlock *block = original_dummy;
@@ -2290,6 +2344,9 @@ MapBlock * ServerMap::generateBlock(
 	{
 		TimeTaker t("mapgen::make_block()");
 		mapgen::make_block(&data);
+
+		if(enable_mapgen_debug_info == false)
+			t.stop(true); // Hide output
 	}
 
 	/*
@@ -2348,6 +2405,9 @@ MapBlock * ServerMap::generateBlock(
 	}
 #endif
 
+	if(enable_mapgen_debug_info == false)
+		timer.stop(true); // Hide output
+
 	return block;
 }
 
@@ -2414,23 +2474,51 @@ MapBlock * ServerMap::createBlock(v3s16 p)
 	return block;
 }
 
-#if 0
-MapBlock * ServerMap::emergeBlock(
-		v3s16 p,
-		bool only_from_disk,
-		core::map<v3s16, MapBlock*> &changed_blocks,
-		core::map<v3s16, MapBlock*> &lighting_invalidated_blocks
-)
+MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
 {
-	DSTACKF("%s: p=(%d,%d,%d), only_from_disk=%d",
+	DSTACKF("%s: p=(%d,%d,%d), allow_generate=%d",
 			__FUNCTION_NAME,
-			p.X, p.Y, p.Z, only_from_disk);
+			p.X, p.Y, p.Z, allow_generate);
 	
-	// This has to be redone or removed
-	assert(0);
+	{
+		MapBlock *block = getBlockNoCreateNoEx(p);
+		if(block)
+			return block;
+	}
+
+	{
+		MapBlock *block = loadBlock(p);
+		if(block)
+			return block;
+	}
+
+	if(allow_generate)
+	{
+		core::map<v3s16, MapBlock*> modified_blocks;
+		MapBlock *block = generateBlock(p, modified_blocks);
+		if(block)
+		{
+			MapEditEvent event;
+			event.type = MEET_OTHER;
+			event.p = p;
+
+			// Copy modified_blocks to event
+			for(core::map<v3s16, MapBlock*>::Iterator
+					i = modified_blocks.getIterator();
+					i.atEnd()==false; i++)
+			{
+				event.modified_blocks.insert(i.getNode()->getKey(), false);
+			}
+
+			// Queue event
+			dispatchEvent(&event);
+								
+			return block;
+		}
+	}
+
 	return NULL;
 }
-#endif
 
 #if 0
 	/*
@@ -2877,10 +2965,10 @@ MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load
 		// format. Just go ahead and create the sector.
 		if(fs::PathExists(sectordir))
 		{
-			dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
+			/*dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
 					<<fullpath<<" doesn't exist but directory does."
 					<<" Continuing with a sector with no metadata."
-					<<std::endl;
+					<<std::endl;*/
 			sector = new ServerMapSector(this, p2d);
 			m_sectors.insert(p2d, sector);
 		}
@@ -3094,10 +3182,8 @@ void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSecto
 
 		MapBlock *block = NULL;
 		bool created_new = false;
-		try{
-			block = sector->getBlockNoCreate(p3d.Y);
-		}
-		catch(InvalidPositionException &e)
+		block = sector->getBlockNoCreateNoEx(p3d.Y);
+		if(block == NULL)
 		{
 			block = sector->createBlankBlockNoInsert(p3d.Y);
 			created_new = true;
@@ -3267,6 +3353,7 @@ MapSector * ClientMap::emergeSector(v2s16 p2d)
 	return sector;
 }
 
+#if 0
 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
 {
 	DSTACK(__FUNCTION_NAME);
@@ -3292,6 +3379,7 @@ void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
 
 	sector->deSerialize(is);
 }
+#endif
 
 void ClientMap::OnRegisterSceneNode()
 {
@@ -3350,13 +3438,13 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 
 	// Take a fair amount as we will be dropping more out later
 	v3s16 p_blocks_min(
-			p_nodes_min.X / MAP_BLOCKSIZE - 1,
-			p_nodes_min.Y / MAP_BLOCKSIZE - 1,
-			p_nodes_min.Z / MAP_BLOCKSIZE - 1);
+			p_nodes_min.X / MAP_BLOCKSIZE - 2,
+			p_nodes_min.Y / MAP_BLOCKSIZE - 2,
+			p_nodes_min.Z / MAP_BLOCKSIZE - 2);
 	v3s16 p_blocks_max(
-			p_nodes_max.X / MAP_BLOCKSIZE,
-			p_nodes_max.Y / MAP_BLOCKSIZE,
-			p_nodes_max.Z / MAP_BLOCKSIZE);
+			p_nodes_max.X / MAP_BLOCKSIZE + 1,
+			p_nodes_max.Y / MAP_BLOCKSIZE + 1,
+			p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 	
 	u32 vertex_count = 0;
 	
@@ -3428,6 +3516,9 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 			{
 				continue;
 			}
+
+			// Okay, this block will be drawn. Reset usage timer.
+			block->resetUsageTimer();
 			
 			// This is ugly (spherical distance limit?)
 			/*if(m_control.range_all == false &&
diff --git a/src/map.h b/src/map.h
index 86b6b6e18..a8aa8e679 100644
--- a/src/map.h
+++ b/src/map.h
@@ -21,25 +21,21 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define MAP_HEADER
 
 #include <jmutex.h>
+#include <jmutexautolock.h>
 #include <jthread.h>
 #include <iostream>
 
-#ifdef _WIN32
-	#include <windows.h>
-	#define sleep_s(x) Sleep((x*1000))
-#else
-	#include <unistd.h>
-	#define sleep_s(x) sleep(x)
-#endif
-
 #include "common_irrlicht.h"
 #include "mapnode.h"
-#include "mapblock.h"
-#include "mapsector.h"
+#include "mapblock_nodemod.h"
 #include "constants.h"
 #include "voxel.h"
-#include "mapchunk.h"
-#include "nodemetadata.h"
+
+class MapSector;
+class ServerMapSector;
+class ClientMapSector;
+class MapBlock;
+class NodeMetadata;
 
 namespace mapgen{
 	struct BlockMakeData;
@@ -61,7 +57,7 @@ enum MapEditEventType{
 	// Node metadata of block changed (not knowing which node exactly)
 	// p stores block coordinate
 	MEET_BLOCK_NODE_METADATA_CHANGED,
-	// Anything else
+	// Anything else (modified_blocks are set unsent)
 	MEET_OTHER
 };
 
@@ -104,17 +100,17 @@ public:
 	virtual void onMapEditEvent(MapEditEvent *event) = 0;
 };
 
-class Map : public NodeContainer
+class Map /*: public NodeContainer*/
 {
 public:
 
 	Map(std::ostream &dout);
 	virtual ~Map();
 
-	virtual u16 nodeContainerId() const
+	/*virtual u16 nodeContainerId() const
 	{
 		return NODECONTAINER_ID_MAP;
-	}
+	}*/
 
 	virtual s32 mapType() const
 	{
@@ -155,66 +151,20 @@ public:
 	MapBlock * getBlockNoCreate(v3s16 p);
 	// Returns NULL if not found
 	MapBlock * getBlockNoCreateNoEx(v3s16 p);
-	// Gets an existing block or creates an empty one
-	//MapBlock * getBlockCreate(v3s16 p);
 	
 	// Returns InvalidPositionException if not found
 	bool isNodeUnderground(v3s16 p);
 	
-	// virtual from NodeContainer
-	bool isValidPosition(v3s16 p)
-	{
-		v3s16 blockpos = getNodeBlockPos(p);
-		MapBlock *blockref;
-		try{
-			blockref = getBlockNoCreate(blockpos);
-		}
-		catch(InvalidPositionException &e)
-		{
-			return false;
-		}
-		return true;
-		/*v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
-		bool is_valid = blockref->isValidPosition(relpos);
-		return is_valid;*/
-	}
+	bool isValidPosition(v3s16 p);
 	
-	// virtual from NodeContainer
 	// throws InvalidPositionException if not found
-	MapNode getNode(v3s16 p)
-	{
-		v3s16 blockpos = getNodeBlockPos(p);
-		MapBlock * blockref = getBlockNoCreate(blockpos);
-		v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
+	MapNode getNode(v3s16 p);
 
-		return blockref->getNodeNoCheck(relpos);
-	}
-
-	// virtual from NodeContainer
 	// throws InvalidPositionException if not found
-	void setNode(v3s16 p, MapNode & n)
-	{
-		v3s16 blockpos = getNodeBlockPos(p);
-		MapBlock * blockref = getBlockNoCreate(blockpos);
-		v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
-		blockref->setNodeNoCheck(relpos, n);
-	}
+	void setNode(v3s16 p, MapNode & n);
 	
 	// Returns a CONTENT_IGNORE node if not found
-	MapNode getNodeNoEx(v3s16 p)
-	{
-		try{
-			v3s16 blockpos = getNodeBlockPos(p);
-			MapBlock * blockref = getBlockNoCreate(blockpos);
-			v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
-
-			return blockref->getNodeNoCheck(relpos);
-		}
-		catch(InvalidPositionException &e)
-		{
-			return MapNode(CONTENT_IGNORE);
-		}
-	}
+	MapNode getNodeNoEx(v3s16 p);
 
 	void unspreadLight(enum LightBank bank,
 			core::map<v3s16, u8> & from_nodes,
@@ -273,23 +223,33 @@ public:
 	
 	virtual void save(bool only_changed){assert(0);};
 	
-	// Server implements this
+	// Server implements this.
+	// Client leaves it as no-op.
 	virtual void saveBlock(MapBlock *block){};
 
 	/*
-		Updates usage timers
+		Updates usage timers and unloads unused blocks and sectors.
+		Saves modified blocks before unloading on MAPTYPE_SERVER.
 	*/
-	void timerUpdate(float dtime);
-	
+	void timerUpdate(float dtime, float unload_timeout,
+			core::list<v3s16> *unloaded_blocks=NULL);
+		
+	// Deletes sectors and their blocks from memory
 	// Takes cache into account
-	// sector mutex should be locked when calling
-	void deleteSectors(core::list<v2s16> &list, bool only_blocks);
-	
-	// Returns count of deleted sectors
-	u32 unloadUnusedData(float timeout, bool only_blocks=false,
+	// If deleted sector is in sector cache, clears cache
+	void deleteSectors(core::list<v2s16> &list);
+
+#if 0
+	/*
+		Unload unused data
+		= flush changed to disk and delete from memory, if usage timer of
+		  block is more than timeout
+	*/
+	void unloadUnusedData(float timeout,
 			core::list<v3s16> *deleted_blocks=NULL);
+#endif
 
-	// For debug printing
+	// For debug printing. Prints "Map: ", "ServerMap: " or "ClientMap: "
 	virtual void PrintInfo(std::ostream &out);
 	
 	void transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks);
@@ -321,7 +281,6 @@ protected:
 	core::map<MapEventReceiver*, bool> m_event_receivers;
 	
 	core::map<v2s16, MapSector*> m_sectors;
-	//JMutex m_sector_mutex;
 
 	// Be sure to set this to NULL when the cached sector is deleted 
 	MapSector *m_sector_cache;
@@ -379,24 +338,13 @@ public:
 	*/
 	MapBlock * createBlock(v3s16 p);
 
-#if 0
 	/*
-		NOTE: This comment might be outdated
-		
 		Forcefully get a block from somewhere.
-
-		InvalidPositionException possible if only_from_disk==true
-		
-		Parameters:
-		changed_blocks: Blocks that have been modified
+		- Memory
+		- Load from disk
+		- Generate
 	*/
-	MapBlock * emergeBlock(
-			v3s16 p,
-			bool only_from_disk,
-			core::map<v3s16, MapBlock*> &changed_blocks,
-			core::map<v3s16, MapBlock*> &lighting_invalidated_blocks
-	);
-#endif
+	MapBlock * emergeBlock(v3s16 p, bool allow_generate=true);
 	
 	// Helper for placing objects on ground level
 	s16 findGroundLevel(v2s16 p2d);
@@ -547,7 +495,7 @@ public:
 	*/
 	MapSector * emergeSector(v2s16 p);
 
-	void deSerializeSector(v2s16 p2d, std::istream &is);
+	//void deSerializeSector(v2s16 p2d, std::istream &is);
 
 	/*
 		ISceneNode methods
diff --git a/src/mapblock.cpp b/src/mapblock.cpp
index 2f6a4b850..647a17756 100644
--- a/src/mapblock.cpp
+++ b/src/mapblock.cpp
@@ -28,7 +28,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	MapBlock
 */
 
-MapBlock::MapBlock(NodeContainer *parent, v3s16 pos, bool dummy):
+MapBlock::MapBlock(Map *parent, v3s16 pos, bool dummy):
 		m_parent(parent),
 		m_pos(pos),
 		m_modified(MOD_STATE_WRITE_NEEDED),
@@ -38,7 +38,7 @@ MapBlock::MapBlock(NodeContainer *parent, v3s16 pos, bool dummy):
 		m_generated(false),
 		m_objects(this),
 		m_timestamp(BLOCK_TIMESTAMP_UNDEFINED),
-		m_usage_timer(BLOCK_TIMESTAMP_UNDEFINED)
+		m_usage_timer(0)
 {
 	data = NULL;
 	if(dummy == false)
@@ -607,24 +607,20 @@ void MapBlock::serialize(std::ostream &os, u8 version)
 			Get data
 		*/
 
-		SharedBuffer<u8> databuf(nodecount*3);
-
-		// Get contents
+		// Serialize nodes
+		SharedBuffer<u8> databuf_nodelist(nodecount*3);
 		for(u32 i=0; i<nodecount; i++)
 		{
-			databuf[i] = data[i].d;
+			data[i].serialize(&databuf_nodelist[i*3], version);
 		}
-
-		// Get params
-		for(u32 i=0; i<nodecount; i++)
-		{
-			databuf[i+nodecount] = data[i].param;
-		}
-
-		// Get param2
+		
+		// Create buffer with different parameters sorted
+		SharedBuffer<u8> databuf(nodecount*3);
 		for(u32 i=0; i<nodecount; i++)
 		{
-			databuf[i+nodecount*2] = data[i].param2;
+			databuf[i] = databuf_nodelist[i*3];
+			databuf[i+nodecount] = databuf_nodelist[i*3+1];
+			databuf[i+nodecount*2] = databuf_nodelist[i*3+2];
 		}
 
 		/*
@@ -773,20 +769,14 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 					("MapBlock::deSerialize: decompress resulted in size"
 					" other than nodecount*3");
 
-		// Set contents
-		for(u32 i=0; i<nodecount; i++)
-		{
-			data[i].d = s[i];
-		}
-		// Set params
-		for(u32 i=0; i<nodecount; i++)
-		{
-			data[i].param = s[i+nodecount];
-		}
-		// Set param2
+		// deserialize nodes from buffer
 		for(u32 i=0; i<nodecount; i++)
 		{
-			data[i].param2 = s[i+nodecount*2];
+			u8 buf[3];
+			buf[0] = s[i];
+			buf[1] = s[i+nodecount];
+			buf[2] = s[i+nodecount*2];
+			data[i].deSerialize(buf, version);
 		}
 		
 		/*
@@ -818,25 +808,6 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
 			}
 		}
 	}
-	
-	/*
-		Translate nodes as specified in the translate_to fields of
-		node features
-
-		NOTE: This isn't really used. Should it be removed?
-	*/
-	for(u32 i=0; i<MAP_BLOCKSIZE*MAP_BLOCKSIZE*MAP_BLOCKSIZE; i++)
-	{
-		MapNode &n = data[i];
-
-		MapNode *translate_to = content_features(n.d).translate_to;
-		if(translate_to)
-		{
-			dstream<<"MapBlock: WARNING: Translating node "<<n.d<<" to "
-					<<translate_to->d<<std::endl;
-			n = *translate_to;
-		}
-	}
 }
 
 void MapBlock::serializeDiskExtra(std::ostream &os, u8 version)
diff --git a/src/mapblock.h b/src/mapblock.h
index 693bc5190..8f3b8464a 100644
--- a/src/mapblock.h
+++ b/src/mapblock.h
@@ -38,6 +38,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	#include "mapblock_mesh.h"
 #endif
 
+class Map;
 
 #define BLOCK_TIMESTAMP_UNDEFINED 0xffffffff
 
@@ -81,6 +82,7 @@ enum ModifiedState
 	BLOCKGEN_FULLY_GENERATED=6
 };*/
 
+#if 0
 enum
 {
 	NODECONTAINER_ID_MAPBLOCK,
@@ -108,23 +110,24 @@ public:
 		}
 	}
 };
+#endif
 
 /*
 	MapBlock itself
 */
 
-class MapBlock : public NodeContainer
+class MapBlock /*: public NodeContainer*/
 {
 public:
-	MapBlock(NodeContainer *parent, v3s16 pos, bool dummy=false);
+	MapBlock(Map *parent, v3s16 pos, bool dummy=false);
 	~MapBlock();
 	
-	virtual u16 nodeContainerId() const
+	/*virtual u16 nodeContainerId() const
 	{
 		return NODECONTAINER_ID_MAPBLOCK;
-	}
+	}*/
 	
-	NodeContainer * getParent()
+	Map * getParent()
 	{
 		return m_parent;
 	}
@@ -640,7 +643,7 @@ private:
 	*/
 
 	// NOTE: Lots of things rely on this being the Map
-	NodeContainer *m_parent;
+	Map *m_parent;
 	// Position in blocks on parent
 	v3s16 m_pos;
 	
diff --git a/src/mapblock_mesh.cpp b/src/mapblock_mesh.cpp
index d4921c2c5..447716d00 100644
--- a/src/mapblock_mesh.cpp
+++ b/src/mapblock_mesh.cpp
@@ -64,11 +64,7 @@ void MeshMakeData::fill(u32 daynight_ratio, MapBlock *block)
 		*/
 		
 		// Get map
-		NodeContainer *parentcontainer = block->getParent();
-		// This will only work if the parent is the map
-		assert(parentcontainer->nodeContainerId() == NODECONTAINER_ID_MAP);
-		// OK, we have the map!
-		Map *map = (Map*)parentcontainer;
+		Map *map = block->getParent();
 
 		for(u16 i=0; i<6; i++)
 		{
diff --git a/src/mapblockobject.cpp b/src/mapblockobject.cpp
index 009163a18..ab1c20267 100644
--- a/src/mapblockobject.cpp
+++ b/src/mapblockobject.cpp
@@ -25,6 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "map.h"
 #include "inventory.h"
 #include "utility.h"
+#include "mapblock.h"
 
 /*
 	MapBlockObject
@@ -856,16 +857,7 @@ bool MapBlockObjectList::wrapObject(MapBlockObject *object)
 	assert(m_objects.find(object->m_id) != NULL);
 	assert(m_objects[object->m_id] == object);
 
-	NodeContainer *parentcontainer = m_block->getParent();
-	// This will only work if the parent is the map
-	if(parentcontainer->nodeContainerId() != NODECONTAINER_ID_MAP)
-	{
-		dstream<<"WARNING: Wrapping object not possible: "
-				"MapBlock's parent is not map"<<std::endl;
-		return true;
-	}
-	// OK, we have the map!
-	Map *map = (Map*)parentcontainer;
+	Map *map = m_block->getParent();
 	
 	// Calculate blockpos on map
 	v3s16 oldblock_pos_i_on_map = m_block->getPosRelative();
diff --git a/src/mapchunk.h b/src/mapchunk.h
index 9860abad0..98df7ce66 100644
--- a/src/mapchunk.h
+++ b/src/mapchunk.h
@@ -21,6 +21,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define MAPCHUNK_HEADER
 
 /*
+	TODO: Remove
+*/
+
+#if 0
+/*
 	MapChunk contains map-generation-time metadata for an area of
 	some MapSectors. (something like 16x16)
 */
@@ -66,6 +71,7 @@ private:
 	u8 m_generation_level;
 	bool m_modified;
 };
+#endif
 
 #endif
 
diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index a491ac81a..d7b6e56c4 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -23,8 +23,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "noise.h"
 #include "mapblock.h"
 #include "map.h"
-#include "serverobject.h"
 #include "mineral.h"
+//#include "serverobject.h"
+#include "content_sao.h"
 
 namespace mapgen
 {
@@ -531,7 +532,7 @@ static void make_corridor(VoxelManipulator &vmanip, v3s16 doorplace,
 	else
 		length = random.range(1,6);
 	length = random.range(1,13);
-	u32 partlength = random.range(1,length);
+	u32 partlength = random.range(1,13);
 	u32 partcount = 0;
 	s16 make_stairs = 0;
 	if(random.next()%2 == 0 && partlength >= 3)
@@ -700,14 +701,30 @@ public:
 				continue;
 			v3s16 roomplace;
 			// X east, Z north, Y up
+#if 1
+			if(doordir == v3s16(1,0,0)) // X+
+				roomplace = doorplace +
+						v3s16(0,-1,m_random.range(-roomsize.Z+2,-2));
+			if(doordir == v3s16(-1,0,0)) // X-
+				roomplace = doorplace +
+						v3s16(-roomsize.X+1,-1,m_random.range(-roomsize.Z+2,-2));
+			if(doordir == v3s16(0,0,1)) // Z+
+				roomplace = doorplace +
+						v3s16(m_random.range(-roomsize.X+2,-2),-1,0);
+			if(doordir == v3s16(0,0,-1)) // Z-
+				roomplace = doorplace +
+						v3s16(m_random.range(-roomsize.X+2,-2),-1,-roomsize.Z+1);
+#endif
+#if 0
 			if(doordir == v3s16(1,0,0)) // X+
-				roomplace = doorplace + v3s16(0,-1,-roomsize.Z/2+m_random.range(-roomsize.Z/2+1,roomsize.Z/2-1));
+				roomplace = doorplace + v3s16(0,-1,-roomsize.Z/2);
 			if(doordir == v3s16(-1,0,0)) // X-
-				roomplace = doorplace + v3s16(-roomsize.X+1,-1,-roomsize.Z/2+m_random.range(-roomsize.Z/2+1,roomsize.Z/2-1));
+				roomplace = doorplace + v3s16(-roomsize.X+1,-1,-roomsize.Z/2);
 			if(doordir == v3s16(0,0,1)) // Z+
-				roomplace = doorplace + v3s16(-roomsize.X/2+m_random.range(-roomsize.X/2+1,roomsize.X/2-1),-1,0);
+				roomplace = doorplace + v3s16(-roomsize.X/2,-1,0);
 			if(doordir == v3s16(0,0,-1)) // Z-
-				roomplace = doorplace + v3s16(-roomsize.X/2+m_random.range(-roomsize.X/2+1,roomsize.X/2-1),-1,-roomsize.Z+1);
+				roomplace = doorplace + v3s16(-roomsize.X/2,-1,-roomsize.Z+1);
+#endif
 			
 			// Check fit
 			bool fits = true;
@@ -818,7 +835,7 @@ static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random)
 		
 		// Determine walker start position
 
-		bool start_in_last_room = (random.range(0,1)==0);
+		bool start_in_last_room = (random.range(0,2)!=0);
 		//bool start_in_last_room = true;
 
 		v3s16 walker_start_place;
@@ -877,30 +894,47 @@ static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random)
 	Noise functions. Make sure seed is mangled differently in each one.
 */
 
-// This affects the shape of the contour
+/*
+	Scaling the output of the noise function affects the overdrive of the
+	contour function, which affects the shape of the output considerably.
+*/
+#define CAVE_NOISE_SCALE 12.0
 //#define CAVE_NOISE_SCALE 10.0
 //#define CAVE_NOISE_SCALE 7.5
-#define CAVE_NOISE_SCALE 5.0
+//#define CAVE_NOISE_SCALE 5.0
+//#define CAVE_NOISE_SCALE 1.0
+
+//#define CAVE_NOISE_THRESHOLD (2.5/CAVE_NOISE_SCALE)
+#define CAVE_NOISE_THRESHOLD (1.5/CAVE_NOISE_SCALE)
 
 NoiseParams get_cave_noise1_params(u64 seed)
 {
 	/*return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 5, 0.7,
 			200, CAVE_NOISE_SCALE);*/
-	return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 4, 0.7,
-			100, CAVE_NOISE_SCALE);
+	/*return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 4, 0.7,
+			100, CAVE_NOISE_SCALE);*/
+	/*return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 5, 0.6,
+			100, CAVE_NOISE_SCALE);*/
+	/*return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 5, 0.3,
+			100, CAVE_NOISE_SCALE);*/
+	return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 4, 0.5,
+			50, CAVE_NOISE_SCALE);
+	//return NoiseParams(NOISE_CONSTANT_ONE);
 }
 
 NoiseParams get_cave_noise2_params(u64 seed)
 {
 	/*return NoiseParams(NOISE_PERLIN_CONTOUR_FLIP_YZ, seed+10325, 5, 0.7,
 			200, CAVE_NOISE_SCALE);*/
-	return NoiseParams(NOISE_PERLIN_CONTOUR_FLIP_YZ, seed+10325, 4, 0.7,
-			100, CAVE_NOISE_SCALE);
+	/*return NoiseParams(NOISE_PERLIN_CONTOUR_FLIP_YZ, seed+10325, 4, 0.7,
+			100, CAVE_NOISE_SCALE);*/
+	/*return NoiseParams(NOISE_PERLIN_CONTOUR_FLIP_YZ, seed+10325, 5, 0.3,
+			100, CAVE_NOISE_SCALE);*/
+	return NoiseParams(NOISE_PERLIN_CONTOUR_FLIP_YZ, seed+10325, 4, 0.5,
+			50, CAVE_NOISE_SCALE);
+	//return NoiseParams(NOISE_CONSTANT_ONE);
 }
 
-//#define CAVE_NOISE_THRESHOLD (2.5/CAVE_NOISE_SCALE)
-#define CAVE_NOISE_THRESHOLD (2.0/CAVE_NOISE_SCALE)
-
 NoiseParams get_ground_noise1_params(u64 seed)
 {
 	return NoiseParams(NOISE_PERLIN, seed+983240, 4,
@@ -937,13 +971,13 @@ bool val_is_ground(double ground_noise1_val, v3s16 p, u64 seed)
 {
 	//return ((double)p.Y < ground_noise1_val);
 
-	double f = 0.8 + noise2d_perlin(
+	double f = 0.55 + noise2d_perlin(
 			0.5+(float)p.X/250, 0.5+(float)p.Z/250,
 			seed+920381, 3, 0.45);
 	if(f < 0.01)
 		f = 0.01;
 	else if(f >= 1.0)
-		f *= 2.0;
+		f *= 1.6;
 	double h = WATER_LEVEL + 10 * noise2d_perlin(
 			0.5+(float)p.X/250, 0.5+(float)p.Z/250,
 			seed+84174, 4, 0.5);
@@ -1082,6 +1116,7 @@ double get_sector_maximum_ground_level(u64 seed, v2s16 sectorpos, double p)
 	v2s16 node_min = sectorpos*MAP_BLOCKSIZE;
 	v2s16 node_max = (sectorpos+v2s16(1,1))*MAP_BLOCKSIZE-v2s16(1,1);
 	double a = -31000;
+	// Corners
 	a = MYMAX(a, find_ground_level_from_noise(seed,
 			v2s16(node_min.X, node_min.Y), p));
 	a = MYMAX(a, find_ground_level_from_noise(seed,
@@ -1090,8 +1125,18 @@ double get_sector_maximum_ground_level(u64 seed, v2s16 sectorpos, double p)
 			v2s16(node_max.X, node_max.Y), p));
 	a = MYMAX(a, find_ground_level_from_noise(seed,
 			v2s16(node_min.X, node_min.Y), p));
+	// Center
 	a = MYMAX(a, find_ground_level_from_noise(seed,
 			v2s16(node_min.X+MAP_BLOCKSIZE/2, node_min.Y+MAP_BLOCKSIZE/2), p));
+	// Side middle points
+	a = MYMAX(a, find_ground_level_from_noise(seed,
+			v2s16(node_min.X+MAP_BLOCKSIZE/2, node_min.Y), p));
+	a = MYMAX(a, find_ground_level_from_noise(seed,
+			v2s16(node_min.X+MAP_BLOCKSIZE/2, node_max.Y), p));
+	a = MYMAX(a, find_ground_level_from_noise(seed,
+			v2s16(node_min.X, node_min.Y+MAP_BLOCKSIZE/2), p));
+	a = MYMAX(a, find_ground_level_from_noise(seed,
+			v2s16(node_max.X, node_min.Y+MAP_BLOCKSIZE/2), p));
 	return a;
 }
 
@@ -1102,6 +1147,7 @@ double get_sector_minimum_ground_level(u64 seed, v2s16 sectorpos, double p)
 	v2s16 node_min = sectorpos*MAP_BLOCKSIZE;
 	v2s16 node_max = (sectorpos+v2s16(1,1))*MAP_BLOCKSIZE-v2s16(1,1);
 	double a = 31000;
+	// Corners
 	a = MYMIN(a, find_ground_level_from_noise(seed,
 			v2s16(node_min.X, node_min.Y), p));
 	a = MYMIN(a, find_ground_level_from_noise(seed,
@@ -1110,8 +1156,18 @@ double get_sector_minimum_ground_level(u64 seed, v2s16 sectorpos, double p)
 			v2s16(node_max.X, node_max.Y), p));
 	a = MYMIN(a, find_ground_level_from_noise(seed,
 			v2s16(node_min.X, node_min.Y), p));
+	// Center
 	a = MYMIN(a, find_ground_level_from_noise(seed,
 			v2s16(node_min.X+MAP_BLOCKSIZE/2, node_min.Y+MAP_BLOCKSIZE/2), p));
+	// Side middle points
+	a = MYMIN(a, find_ground_level_from_noise(seed,
+			v2s16(node_min.X+MAP_BLOCKSIZE/2, node_min.Y), p));
+	a = MYMIN(a, find_ground_level_from_noise(seed,
+			v2s16(node_min.X+MAP_BLOCKSIZE/2, node_max.Y), p));
+	a = MYMIN(a, find_ground_level_from_noise(seed,
+			v2s16(node_min.X, node_min.Y+MAP_BLOCKSIZE/2), p));
+	a = MYMIN(a, find_ground_level_from_noise(seed,
+			v2s16(node_max.X, node_min.Y+MAP_BLOCKSIZE/2), p));
 	return a;
 }
 
@@ -1358,12 +1414,12 @@ void make_block(BlockMakeData *data)
 		If block is deep underground, this is set to true and ground
 		density noise is not generated, for speed optimization.
 	*/
-	bool all_is_ground_except_caves = (minimum_ground_depth > 16);
+	bool all_is_ground_except_caves = (minimum_ground_depth > 40);
 	
 	/*
 		Create a block-specific seed
 	*/
-	u32 blockseed = (data->seed%0x100000000) + full_node_min.Z*38134234
+	u32 blockseed = (u32)(data->seed%0x100000000) + full_node_min.Z*38134234
 			+ full_node_min.Y*42123 + full_node_min.X*23;
 	
 	/*
@@ -1385,13 +1441,13 @@ void make_block(BlockMakeData *data)
 		/*
 			Cave noise
 		*/
-
+#if 1
 		noisebuf_cave.create(get_cave_noise1_params(data->seed),
 				minpos_f.X, minpos_f.Y, minpos_f.Z,
 				maxpos_f.X, maxpos_f.Y, maxpos_f.Z,
-				4, 3, 4);
-		
+				2, 2, 2);
 		noisebuf_cave.multiply(get_cave_noise2_params(data->seed));
+#endif
 
 		/*
 			Ground noise
diff --git a/src/mapnode.cpp b/src/mapnode.cpp
index dae21e7cc..391e593f9 100644
--- a/src/mapnode.cpp
+++ b/src/mapnode.cpp
@@ -30,8 +30,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 ContentFeatures::~ContentFeatures()
 {
-	if(translate_to)
-		delete translate_to;
+	/*if(translate_to)
+		delete translate_to;*/
 	if(initial_metadata)
 		delete initial_metadata;
 }
@@ -139,6 +139,17 @@ void init_mapnode()
 	}
 
 	/*
+		Initially set every block to be shown as an unknown block.
+		Don't touch CONTENT_IGNORE or CONTENT_AIR.
+	*/
+	for(u16 i=0; i<=253; i++)
+	{
+		ContentFeatures *f = &g_content_features[i];
+		f->setAllTextures("unknown_block.png");
+		f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
+	}
+
+	/*
 		Initialize mapnode content
 	*/
 	content_mapnode_init();
@@ -230,6 +241,94 @@ u8 MapNode::getMineral()
 	return MINERAL_NONE;
 }
 
+u32 MapNode::serializedLength(u8 version)
+{
+	if(!ser_ver_supported(version))
+		throw VersionMismatchException("ERROR: MapNode format not supported");
+		
+	if(version == 0)
+		return 1;
+	else if(version <= 9)
+		return 2;
+	else
+		return 3;
+}
+void MapNode::serialize(u8 *dest, u8 version)
+{
+	if(!ser_ver_supported(version))
+		throw VersionMismatchException("ERROR: MapNode format not supported");
+		
+	u8 actual_d = d;
+
+	// Convert from new version to old
+	if(version <= 18)
+	{
+		// In these versions, CONTENT_IGNORE and CONTENT_AIR
+		// are 255 and 254
+		if(d == CONTENT_IGNORE)
+			d = 255;
+		else if(d == CONTENT_AIR)
+			d = 254;
+	}
+
+	if(version == 0)
+	{
+		dest[0] = actual_d;
+	}
+	else if(version <= 9)
+	{
+		dest[0] = actual_d;
+		dest[1] = param;
+	}
+	else
+	{
+		dest[0] = actual_d;
+		dest[1] = param;
+		dest[2] = param2;
+	}
+}
+void MapNode::deSerialize(u8 *source, u8 version)
+{
+	if(!ser_ver_supported(version))
+		throw VersionMismatchException("ERROR: MapNode format not supported");
+		
+	if(version == 0)
+	{
+		d = source[0];
+	}
+	else if(version == 1)
+	{
+		d = source[0];
+		// This version doesn't support saved lighting
+		if(light_propagates() || light_source() > 0)
+			param = 0;
+		else
+			param = source[1];
+	}
+	else if(version <= 9)
+	{
+		d = source[0];
+		param = source[1];
+	}
+	else
+	{
+		d = source[0];
+		param = source[1];
+		param2 = source[2];
+		
+		// Convert from old version to new
+		if(version <= 18)
+		{
+			// In these versions, CONTENT_IGNORE and CONTENT_AIR
+			// are 255 and 254
+			if(d == 255)
+				d = CONTENT_IGNORE;
+			else if(d == 254)
+				d = CONTENT_AIR;
+		}
+	}
+}
+
 /*
 	Gets lighting value at face of node
 	
diff --git a/src/mapnode.h b/src/mapnode.h
index d4ba0fed5..8bbd4eb79 100644
--- a/src/mapnode.h
+++ b/src/mapnode.h
@@ -37,6 +37,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 /*
+	Ranges:
+		0x000...0x07f: param2 is fully usable
+		0x800...0xfff: param2 lower 4 bytes are free
+*/
+typedef u16 content_t;
+
+/*
 	Initializes all kind of stuff in here.
 	Many things depend on this.
 
@@ -59,14 +66,16 @@ void init_mapnode();
 	Doesn't create faces with anything and is considered being
 	out-of-map in the game map.
 */
-#define CONTENT_IGNORE 255
+//#define CONTENT_IGNORE 255
+#define CONTENT_IGNORE 127
 #define CONTENT_IGNORE_DEFAULT_PARAM 0
 
 /*
 	The common material through which the player can walk and which
 	is transparent to light
 */
-#define CONTENT_AIR 254
+//#define CONTENT_AIR 254
+#define CONTENT_AIR 126
 
 /*
 	Content feature list
@@ -94,7 +103,7 @@ class NodeMetadata;
 struct ContentFeatures
 {
 	// If non-NULL, content is translated to this when deserialized
-	MapNode *translate_to;
+	//MapNode *translate_to;
 
 	// Type of MapNode::param
 	ContentParamType param_type;
@@ -156,7 +165,7 @@ struct ContentFeatures
 
 	void reset()
 	{
-		translate_to = NULL;
+		//translate_to = NULL;
 		param_type = CPT_NONE;
 		inventory_texture = NULL;
 		is_ground_content = false;
@@ -196,6 +205,8 @@ struct ContentFeatures
 		{
 			setTexture(i, name, alpha);
 		}
+		// Force inventory texture too
+		setInventoryTexture(name);
 	}
 
 	void setTile(u16 i, const TileSpec &tile)
@@ -399,20 +410,30 @@ enum LightBank
 
 struct MapNode
 {
-	// Content
-	u8 d;
+	/*
+		Main content
+		0x00-0x7f: Short content type
+		0x80-0xff: Long content type (param2>>4 makes up low bytes)
+	*/
+	union
+	{
+		u8 param0;
+		u8 d;
+	};
 
 	/*
 		Misc parameter. Initialized to 0.
 		- For light_propagates() blocks, this is light intensity,
 		  stored logarithmically from 0 to LIGHT_MAX.
 		  Sunlight is LIGHT_SUN, which is LIGHT_MAX+1.
-		- Contains 2 values, day- and night lighting. Each takes 4 bits.
+		  - Contains 2 values, day- and night lighting. Each takes 4 bits.
+		- Mineral content (should be removed from here)
+		- Uhh... well, most blocks have light or nothing in here.
 	*/
 	union
 	{
-		s8 param;
 		u8 param1;
+		s8 param;
 	};
 	
 	/*
@@ -437,14 +458,6 @@ struct MapNode
 		param2 = a_param2;
 	}
 
-	/*MapNode & operator=(const MapNode &other)
-	{
-		d = other.d;
-		param = other.param;
-		param2 = other.param2;
-		return *this;
-	}*/
-
 	bool operator==(const MapNode &other)
 	{
 		return (d == other.d
@@ -452,6 +465,16 @@ struct MapNode
 				&& param2 == other.param2);
 	}
 	
+	// To be used everywhere
+	content_t getContent()
+	{
+		return d;
+	}
+	void setContent(content_t c)
+	{
+		d = c;
+	}
+	
 	/*
 		These four are DEPRECATED I guess. -c55
 	*/
@@ -566,88 +589,15 @@ struct MapNode
 		MINERAL_NONE if doesn't contain or isn't able to contain mineral.
 	*/
 	u8 getMineral();
-
+	
 	/*
-		These serialization functions are used when informing client
-		of a single node add.
-
-		NOTE: When loading a MapBlock, these are not used. Should they?
+		Serialization functions
 	*/
 
-	static u32 serializedLength(u8 version)
-	{
-		if(!ser_ver_supported(version))
-			throw VersionMismatchException("ERROR: MapNode format not supported");
-			
-		if(version == 0)
-			return 1;
-		else if(version <= 9)
-			return 2;
-		else
-			return 3;
-	}
-	void serialize(u8 *dest, u8 version)
-	{
-		if(!ser_ver_supported(version))
-			throw VersionMismatchException("ERROR: MapNode format not supported");
-			
-		if(version == 0)
-		{
-			dest[0] = d;
-		}
-		else if(version <= 9)
-		{
-			dest[0] = d;
-			dest[1] = param;
-		}
-		else
-		{
-			dest[0] = d;
-			dest[1] = param;
-			dest[2] = param2;
-		}
-	}
-	void deSerialize(u8 *source, u8 version)
-	{
-		if(!ser_ver_supported(version))
-			throw VersionMismatchException("ERROR: MapNode format not supported");
-			
-		if(version == 0)
-		{
-			d = source[0];
-		}
-		else if(version == 1)
-		{
-			d = source[0];
-			// This version doesn't support saved lighting
-			if(light_propagates() || light_source() > 0)
-				param = 0;
-			else
-				param = source[1];
-		}
-		else if(version <= 9)
-		{
-			d = source[0];
-			param = source[1];
-		}
-		else
-		{
-			d = source[0];
-			param = source[1];
-			param2 = source[2];
-		}
-
-		// Translate deprecated stuff
-		// NOTE: This doesn't get used because MapBlock handles node
-		// parameters directly
-		MapNode *translate_to = content_features(d).translate_to;
-		if(translate_to)
-		{
-			dstream<<"MapNode: WARNING: Translating "<<d<<" to "
-					<<translate_to->d<<std::endl;
-			*this = *translate_to;
-		}
-	}
+	static u32 serializedLength(u8 version);
+	void serialize(u8 *dest, u8 version);
+	void deSerialize(u8 *source, u8 version);
+	
 };
 
 /*
diff --git a/src/mapsector.cpp b/src/mapsector.cpp
index 97101dd36..4a526c412 100644
--- a/src/mapsector.cpp
+++ b/src/mapsector.cpp
@@ -21,15 +21,14 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "jmutexautolock.h"
 #include "client.h"
 #include "exceptions.h"
+#include "mapblock.h"
 
-MapSector::MapSector(NodeContainer *parent, v2s16 pos):
-		differs_from_disk(true),
+MapSector::MapSector(Map *parent, v2s16 pos):
+		differs_from_disk(false),
 		m_parent(parent),
 		m_pos(pos),
 		m_block_cache(NULL)
 {
-	m_mutex.Init();
-	assert(m_mutex.IsInitialized());
 }
 
 MapSector::~MapSector()
@@ -39,8 +38,6 @@ MapSector::~MapSector()
 
 void MapSector::deleteBlocks()
 {
-	JMutexAutoLock lock(m_mutex);
-
 	// Clear cache
 	m_block_cache = NULL;
 
@@ -83,26 +80,12 @@ MapBlock * MapSector::getBlockBuffered(s16 y)
 
 MapBlock * MapSector::getBlockNoCreateNoEx(s16 y)
 {
-	JMutexAutoLock lock(m_mutex);
-	
 	return getBlockBuffered(y);
 }
 
-MapBlock * MapSector::getBlockNoCreate(s16 y)
-{
-	MapBlock *block = getBlockNoCreateNoEx(y);
-
-	if(block == NULL)
-		throw InvalidPositionException();
-	
-	return block;
-}
-
 MapBlock * MapSector::createBlankBlockNoInsert(s16 y)
 {
-	// There should not be a block at this position
-	if(getBlockBuffered(y) != NULL)
-		throw AlreadyExistsException("Block already exists");
+	assert(getBlockBuffered(y) == NULL);
 
 	v3s16 blockpos_map(m_pos.X, y, m_pos.Y);
 	
@@ -113,8 +96,6 @@ MapBlock * MapSector::createBlankBlockNoInsert(s16 y)
 
 MapBlock * MapSector::createBlankBlock(s16 y)
 {
-	JMutexAutoLock lock(m_mutex);
-	
 	MapBlock *block = createBlankBlockNoInsert(y);
 	
 	m_blocks.insert(y, block);
@@ -126,39 +107,34 @@ void MapSector::insertBlock(MapBlock *block)
 {
 	s16 block_y = block->getPos().Y;
 
-	{
-		JMutexAutoLock lock(m_mutex);
-
-		MapBlock *block2 = getBlockBuffered(block_y);
-		if(block2 != NULL){
-			throw AlreadyExistsException("Block already exists");
-		}
-
-		v2s16 p2d(block->getPos().X, block->getPos().Z);
-		assert(p2d == m_pos);
-		
-		// Insert into container
-		m_blocks.insert(block_y, block);
+	MapBlock *block2 = getBlockBuffered(block_y);
+	if(block2 != NULL){
+		throw AlreadyExistsException("Block already exists");
 	}
+
+	v2s16 p2d(block->getPos().X, block->getPos().Z);
+	assert(p2d == m_pos);
+	
+	// Insert into container
+	m_blocks.insert(block_y, block);
 }
 
-void MapSector::removeBlock(MapBlock *block)
+void MapSector::deleteBlock(MapBlock *block)
 {
 	s16 block_y = block->getPos().Y;
 
-	JMutexAutoLock lock(m_mutex);
-	
 	// Clear from cache
 	m_block_cache = NULL;
 	
 	// Remove from container
 	m_blocks.remove(block_y);
+
+	// Delete
+	delete block;
 }
 
 void MapSector::getBlocks(core::list<MapBlock*> &dest)
 {
-	JMutexAutoLock lock(m_mutex);
-
 	core::list<MapBlock*> ref_list;
 
 	core::map<s16, MapBlock*>::Iterator bi;
@@ -175,7 +151,7 @@ void MapSector::getBlocks(core::list<MapBlock*> &dest)
 	ServerMapSector
 */
 
-ServerMapSector::ServerMapSector(NodeContainer *parent, v2s16 pos):
+ServerMapSector::ServerMapSector(Map *parent, v2s16 pos):
 		MapSector(parent, pos)
 {
 }
@@ -184,15 +160,6 @@ ServerMapSector::~ServerMapSector()
 {
 }
 
-f32 ServerMapSector::getGroundHeight(v2s16 p, bool generate)
-{
-	return GROUNDHEIGHT_NOTFOUND_SETVALUE;
-}
-
-void ServerMapSector::setGroundHeight(v2s16 p, f32 y, bool generate)
-{
-}
-
 void ServerMapSector::serialize(std::ostream &os, u8 version)
 {
 	if(!ser_ver_supported(version))
@@ -217,7 +184,7 @@ void ServerMapSector::serialize(std::ostream &os, u8 version)
 
 ServerMapSector* ServerMapSector::deSerialize(
 		std::istream &is,
-		NodeContainer *parent,
+		Map *parent,
 		v2s16 p2d,
 		core::map<v2s16, MapSector*> & sectors
 	)
@@ -280,7 +247,7 @@ ServerMapSector* ServerMapSector::deSerialize(
 	ClientMapSector
 */
 
-ClientMapSector::ClientMapSector(NodeContainer *parent, v2s16 pos):
+ClientMapSector::ClientMapSector(Map *parent, v2s16 pos):
 		MapSector(parent, pos)
 {
 }
@@ -289,45 +256,6 @@ ClientMapSector::~ClientMapSector()
 {
 }
 
-void ClientMapSector::deSerialize(std::istream &is)
-{
-	/*
-		[0] u8 serialization version
-		[1] s16 corners[0]
-		[3] s16 corners[1]
-		[5] s16 corners[2]
-		[7] s16 corners[3]
-		size = 9
-		
-		In which corners are in these positions
-		v2s16(0,0),
-		v2s16(1,0),
-		v2s16(1,1),
-		v2s16(0,1),
-	*/
-	
-	// Read version
-	u8 version = SER_FMT_VER_INVALID;
-	is.read((char*)&version, 1);
-	
-	if(!ser_ver_supported(version))
-		throw VersionMismatchException("ERROR: MapSector format not supported");
-	
-	u8 buf[2];
-	
-	// Dummy read corners
-	is.read((char*)buf, 2);
-	is.read((char*)buf, 2);
-	is.read((char*)buf, 2);
-	is.read((char*)buf, 2);
-	
-	/*
-		Set stuff in sector
-	*/
-	
-	// Nothing here
-
-}
 #endif // !SERVER
 
 //END
diff --git a/src/mapsector.h b/src/mapsector.h
index fda290cd7..44f45d8f0 100644
--- a/src/mapsector.h
+++ b/src/mapsector.h
@@ -26,9 +26,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include <jmutex.h>
 #include "common_irrlicht.h"
-#include "mapblock.h"
-//#include "heightmap.h"
 #include "exceptions.h"
+#include <ostream>
+
+class MapBlock;
+class Map;
 
 /*
 	This is an Y-wise stack of MapBlocks.
@@ -37,18 +39,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define MAPSECTOR_SERVER 0
 #define MAPSECTOR_CLIENT 1
 
-class MapSector: public NodeContainer
+class MapSector
 {
 public:
 	
-	MapSector(NodeContainer *parent, v2s16 pos);
+	MapSector(Map *parent, v2s16 pos);
 	virtual ~MapSector();
 
-	virtual u16 nodeContainerId() const
-	{
-		return NODECONTAINER_ID_MAPSECTOR;
-	}
-
 	virtual u32 getId() const = 0;
 
 	void deleteBlocks();
@@ -59,167 +56,32 @@ public:
 	}
 
 	MapBlock * getBlockNoCreateNoEx(s16 y);
-	MapBlock * getBlockNoCreate(s16 y);
 	MapBlock * createBlankBlockNoInsert(s16 y);
 	MapBlock * createBlankBlock(s16 y);
-	//MapBlock * getBlock(s16 y, bool generate=true);
 
 	void insertBlock(MapBlock *block);
 	
-	// This is used to remove a dummy from the sector while generating it.
-	// Block is only removed from internal container, not deleted.
-	void removeBlock(MapBlock *block);
+	void deleteBlock(MapBlock *block);
 	
-	/*
-		This might not be a thread-safe depending on the day.
-		See the implementation.
-	*/
 	void getBlocks(core::list<MapBlock*> &dest);
 	
-	/*
-		If all nodes in area can be accessed, returns true and
-		adds all blocks in area to blocks.
-
-		If all nodes in area cannot be accessed, returns false.
-
-		The implementation of this is quite slow
-
-		if blocks==NULL; it is not accessed at all.
-	*/
-	bool isValidArea(v3s16 p_min_nodes, v3s16 p_max_nodes,
-			core::map<s16, MapBlock*> *blocks)
-	{
-		core::map<s16, MapBlock*> bs;
-		
-		v3s16 p_min = getNodeBlockPos(p_min_nodes);
-		v3s16 p_max = getNodeBlockPos(p_max_nodes);
-		if(p_min.X != 0 || p_min.Z != 0
-				|| p_max.X != 0 || p_max.Z != 0)
-			return false;
-		v3s16 y;
-		for(s16 y=p_min.Y; y<=p_max.Y; y++)
-		{
-			try{
-				MapBlock *block = getBlockNoCreate(y);
-				if(block->isDummy())
-					return false;
-				if(blocks!=NULL)
-					bs[y] = block;
-			}
-			catch(InvalidPositionException &e)
-			{
-				return false;
-			}
-		}
-
-		if(blocks!=NULL)
-		{
-			for(core::map<s16, MapBlock*>::Iterator i=bs.getIterator();
-					i.atEnd()==false; i++)
-			{
-				MapBlock *block = i.getNode()->getValue();
-				s16 y = i.getNode()->getKey();
-				blocks->insert(y, block);
-			}
-		}
-		return true;
-	}
-
-	void getBlocksInArea(v3s16 p_min_nodes, v3s16 p_max_nodes,
-			core::map<v3s16, MapBlock*> &blocks)
-	{
-		v3s16 p_min = getNodeBlockPos(p_min_nodes);
-		v3s16 p_max = getNodeBlockPos(p_max_nodes);
-		v3s16 y;
-		for(s16 y=p_min.Y; y<=p_max.Y; y++)
-		{
-			try{
-				MapBlock *block = getBlockNoCreate(y);
-				blocks.insert(block->getPos(), block);
-			}
-			catch(InvalidPositionException &e)
-			{
-			}
-		}
-	}
-	
-	// virtual from NodeContainer
-	bool isValidPosition(v3s16 p)
-	{
-		v3s16 blockpos = getNodeBlockPos(p);
-
-		if(blockpos.X != 0 || blockpos.Z != 0)
-			return false;
-
-		MapBlock *blockref;
-		try{
-			blockref = getBlockNoCreate(blockpos.Y);
-		}
-		catch(InvalidPositionException &e)
-		{
-			return false;
-		}
-
-		return true;
-	}
-
-	// virtual from NodeContainer
-	MapNode getNode(v3s16 p)
-	{
-		v3s16 blockpos = getNodeBlockPos(p);
-		if(blockpos.X != 0 || blockpos.Z != 0)
-			throw InvalidPositionException
-				("MapSector only allows Y");
-
-		MapBlock * blockref = getBlockNoCreate(blockpos.Y);
-		v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
-
-		return blockref->getNode(relpos);
-	}
-	// virtual from NodeContainer
-	void setNode(v3s16 p, MapNode & n)
-	{
-		v3s16 blockpos = getNodeBlockPos(p);
-		if(blockpos.X != 0 || blockpos.Z != 0)
-			throw InvalidPositionException
-				("MapSector only allows Y");
-
-		MapBlock * blockref = getBlockNoCreate(blockpos.Y);
-		v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
-		blockref->setNode(relpos, n);
-	}
-
-	// DEPRECATED?
-	virtual f32 getGroundHeight(v2s16 p, bool generate=false)
-	{
-		return GROUNDHEIGHT_NOTFOUND_SETVALUE;
-	}
-	virtual void setGroundHeight(v2s16 p, f32 y, bool generate=false)
-	{
-	}
-	
-	// When true, sector metadata is changed from the one on disk
-	// (sector metadata = all but blocks)
-	// Basically, this should be changed to true in every setter method
+	// Always false at the moment, because sector contains no metadata.
 	bool differs_from_disk;
 
 protected:
 	
 	// The pile of MapBlocks
 	core::map<s16, MapBlock*> m_blocks;
-	//JMutex m_blocks_mutex; // For public access functions
 
-	NodeContainer *m_parent;
+	Map *m_parent;
 	// Position on parent (in MapBlock widths)
 	v2s16 m_pos;
-
+	
+	// Last-used block is cached here for quicker access.
 	// Be sure to set this to NULL when the cached block is deleted 
 	MapBlock *m_block_cache;
 	s16 m_block_cache_y;
 	
-	// This is used for protecting m_blocks
-	JMutex m_mutex;
-	
 	/*
 		Private methods
 	*/
@@ -230,27 +92,24 @@ protected:
 class ServerMapSector : public MapSector
 {
 public:
-	ServerMapSector(NodeContainer *parent, v2s16 pos);
+	ServerMapSector(Map *parent, v2s16 pos);
 	~ServerMapSector();
 	
 	u32 getId() const
 	{
 		return MAPSECTOR_SERVER;
 	}
-	
-	// DEPRECATED?
-	f32 getGroundHeight(v2s16 p, bool generate=false);
-	void setGroundHeight(v2s16 p, f32 y, bool generate=false);
 
 	/*
 		These functions handle metadata.
 		They do not handle blocks.
 	*/
+
 	void serialize(std::ostream &os, u8 version);
 	
 	static ServerMapSector* deSerialize(
 			std::istream &is,
-			NodeContainer *parent,
+			Map *parent,
 			v2s16 p2d,
 			core::map<v2s16, MapSector*> & sectors
 		);
@@ -262,7 +121,7 @@ private:
 class ClientMapSector : public MapSector
 {
 public:
-	ClientMapSector(NodeContainer *parent, v2s16 pos);
+	ClientMapSector(Map *parent, v2s16 pos);
 	~ClientMapSector();
 	
 	u32 getId() const
@@ -270,16 +129,7 @@ public:
 		return MAPSECTOR_CLIENT;
 	}
 
-	void deSerialize(std::istream &is);
-
-	/*s16 getCorner(u16 i)
-	{
-		return m_corners[i];
-	}*/
-		
 private:
-	// The ground height of the corners is stored in here
-	//s16 m_corners[4];
 };
 #endif
 	
diff --git a/src/mineral.h b/src/mineral.h
index 970ff1f78..61776e669 100644
--- a/src/mineral.h
+++ b/src/mineral.h
@@ -21,7 +21,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define MINERAL_HEADER
 
 #include "inventory.h"
-#include "tile.h"
 
 /*
 	Minerals
diff --git a/src/noise.cpp b/src/noise.cpp
index b755a824a..9c2141ce0 100644
--- a/src/noise.cpp
+++ b/src/noise.cpp
@@ -238,7 +238,11 @@ double noise3d_param(const NoiseParams &param, double x, double y, double z)
 	y /= s;
 	z /= s;
 
-	if(param.type == NOISE_PERLIN)
+	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,
diff --git a/src/noise.h b/src/noise.h
index c8d8985c6..ed75f316d 100644
--- a/src/noise.h
+++ b/src/noise.h
@@ -82,10 +82,11 @@ double noise3d_perlin_abs(double x, double y, double z, int seed,
 
 enum NoiseType
 {
+	NOISE_CONSTANT_ONE,
 	NOISE_PERLIN,
 	NOISE_PERLIN_ABS,
 	NOISE_PERLIN_CONTOUR,
-	NOISE_PERLIN_CONTOUR_FLIP_YZ
+	NOISE_PERLIN_CONTOUR_FLIP_YZ,
 };
 
 struct NoiseParams
diff --git a/src/player.cpp b/src/player.cpp
index 198eca957..6bacb088d 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -309,6 +309,8 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 	v3f oldpos = position;
 	v3s16 oldpos_i = floatToInt(oldpos, BS);
 
+	v3f old_speed = m_speed;
+
 	/*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
 			<<oldpos_i.Z<<")"<<std::endl;*/
 
@@ -405,8 +407,23 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 		if(position.Y < min_y)
 		{
 			position.Y = min_y;
+
+			//v3f old_speed = m_speed;
+
 			if(m_speed.Y < 0)
 				m_speed.Y = 0;
+
+			/*if(collision_info)
+			{
+				// Report fall collision
+				if(old_speed.Y < m_speed.Y - 0.1)
+				{
+					CollisionInfo info;
+					info.t = COLLISION_FALL;
+					info.speed = m_speed.Y - old_speed.Y;
+					collision_info->push_back(info);
+				}
+			}*/
 		}
 	}
 
@@ -557,13 +574,13 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 			*/
 			if(other_axes_overlap && main_axis_collides)
 			{
-				v3f old_speed = m_speed;
+				//v3f old_speed = m_speed;
 
 				m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
 				position -= position.dotProduct(dirs[i]) * dirs[i];
 				position += oldpos.dotProduct(dirs[i]) * dirs[i];
 				
-				if(collision_info)
+				/*if(collision_info)
 				{
 					// Report fall collision
 					if(old_speed.Y < m_speed.Y - 0.1)
@@ -573,7 +590,7 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 						info.speed = m_speed.Y - old_speed.Y;
 						collision_info->push_back(info);
 					}
-				}
+				}*/
 			}
 		
 		}
@@ -656,6 +673,21 @@ void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
 		Set new position
 	*/
 	setPosition(position);
+	
+	/*
+		Report collisions
+	*/
+	if(collision_info)
+	{
+		// Report fall collision
+		if(old_speed.Y < m_speed.Y - 0.1)
+		{
+			CollisionInfo info;
+			info.t = COLLISION_FALL;
+			info.speed = m_speed.Y - old_speed.Y;
+			collision_info->push_back(info);
+		}
+	}
 }
 
 void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
diff --git a/src/serialization.h b/src/serialization.h
index 80a336101..974ae95d8 100644
--- a/src/serialization.h
+++ b/src/serialization.h
@@ -53,12 +53,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	15: StaticObjects
 	16: larger maximum size of node metadata, and compression
 	17: MapBlocks contain timestamp
-	18: sqlite/new generator/whatever
+	18: new generator (not really necessary, but it's there)
+	19: new content type handling
 */
 // This represents an uninitialized or invalid format
 #define SER_FMT_VER_INVALID 255
 // Highest supported serialization version
-#define SER_FMT_VER_HIGHEST 18
+#define SER_FMT_VER_HIGHEST 19
 // Lowest supported serialization version
 #define SER_FMT_VER_LOWEST 0
 
diff --git a/src/server.cpp b/src/server.cpp
index cf8b57773..c2433e1af 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -34,6 +34,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "content_mapnode.h"
 #include "content_craft.h"
 #include "content_nodemeta.h"
+#include "mapblock.h"
+#include "serverobject.h"
 
 #define BLOCK_EMERGE_FLAG_FROMDISK (1<<0)
 
@@ -600,6 +602,9 @@ void RemoteClient::GetNextBlocks(Server *server, float dtime,
 			bool block_is_invalid = false;
 			if(block != NULL)
 			{
+				// Reset usage timer, this block will be of use in the future.
+				block->resetUsageTimer();
+
 				// Block is dummy if data doesn't exist.
 				// It means it has been not found from disk and not generated
 				if(block->isDummy())
@@ -1295,12 +1300,21 @@ void Server::AsyncRunStep()
 	}
 
 	{
-		// Step environment
-		// This also runs Map's timers
 		JMutexAutoLock lock(m_env_mutex);
+		// Step environment
 		ScopeProfiler sp(&g_profiler, "Server: environment step");
 		m_env.step(dtime);
 	}
+		
+	const float map_timer_and_unload_dtime = 5.15;
+	if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
+	{
+		JMutexAutoLock lock(m_env_mutex);
+		// Run Map's timers and unload unused data
+		ScopeProfiler sp(&g_profiler, "Server: map timer and unload");
+		m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
+				g_settings.getFloat("server_unload_unused_data_timeout"));
+	}
 	
 	/*
 		Do background stuff
@@ -1656,9 +1670,22 @@ void Server::AsyncRunStep()
 	*/
 	{
 		// Don't send too many at a time
-		u32 count = 0;
+		//u32 count = 0;
+
+		// Single change sending is disabled if queue size is not small
+		bool disable_single_change_sending = false;
+		if(m_unsent_map_edit_queue.size() >= 4)
+			disable_single_change_sending = true;
+
+		bool got_any_events = false;
+
+		// We'll log the amount of each
+		Profiler prof;
+
 		while(m_unsent_map_edit_queue.size() != 0)
 		{
+			got_any_events = true;
+
 			MapEditEvent* event = m_unsent_map_edit_queue.pop_front();
 			
 			// Players far away from the change are stored here.
@@ -1668,28 +1695,41 @@ void Server::AsyncRunStep()
 
 			if(event->type == MEET_ADDNODE)
 			{
-				dstream<<"Server: MEET_ADDNODE"<<std::endl;
-				sendAddNode(event->p, event->n, event->already_known_by_peer,
-						&far_players, 30);
+				//dstream<<"Server: MEET_ADDNODE"<<std::endl;
+				prof.add("MEET_ADDNODE", 1);
+				if(disable_single_change_sending)
+					sendAddNode(event->p, event->n, event->already_known_by_peer,
+							&far_players, 5);
+				else
+					sendAddNode(event->p, event->n, event->already_known_by_peer,
+							&far_players, 30);
 			}
 			else if(event->type == MEET_REMOVENODE)
 			{
-				dstream<<"Server: MEET_REMOVENODE"<<std::endl;
-				sendRemoveNode(event->p, event->already_known_by_peer,
-						&far_players, 30);
+				//dstream<<"Server: MEET_REMOVENODE"<<std::endl;
+				prof.add("MEET_REMOVENODE", 1);
+				if(disable_single_change_sending)
+					sendRemoveNode(event->p, event->already_known_by_peer,
+							&far_players, 5);
+				else
+					sendRemoveNode(event->p, event->already_known_by_peer,
+							&far_players, 30);
 			}
 			else if(event->type == MEET_BLOCK_NODE_METADATA_CHANGED)
 			{
 				dstream<<"Server: MEET_BLOCK_NODE_METADATA_CHANGED"<<std::endl;
+				prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
 				setBlockNotSent(event->p);
 			}
 			else if(event->type == MEET_OTHER)
 			{
+				prof.add("MEET_OTHER", 1);
 				dstream<<"WARNING: Server: MEET_OTHER not implemented"
 						<<std::endl;
 			}
 			else
 			{
+				prof.add("unknown", 1);
 				dstream<<"WARNING: Server: Unknown MapEditEvent "
 						<<((u32)event->type)<<std::endl;
 			}
@@ -1697,32 +1737,45 @@ void Server::AsyncRunStep()
 			/*
 				Set blocks not sent to far players
 			*/
-			core::map<v3s16, MapBlock*> modified_blocks2;
-			for(core::map<v3s16, bool>::Iterator
-					i = event->modified_blocks.getIterator();
-					i.atEnd()==false; i++)
-			{
-				v3s16 p = i.getNode()->getKey();
-				modified_blocks2.insert(p, m_env.getMap().getBlockNoCreateNoEx(p));
-			}
-			for(core::list<u16>::Iterator
-					i = far_players.begin();
-					i != far_players.end(); i++)
+			if(far_players.size() > 0)
 			{
-				u16 peer_id = *i;
-				RemoteClient *client = getClient(peer_id);
-				if(client==NULL)
-					continue;
-				client->SetBlocksNotSent(modified_blocks2);
+				// Convert list format to that wanted by SetBlocksNotSent
+				core::map<v3s16, MapBlock*> modified_blocks2;
+				for(core::map<v3s16, bool>::Iterator
+						i = event->modified_blocks.getIterator();
+						i.atEnd()==false; i++)
+				{
+					v3s16 p = i.getNode()->getKey();
+					modified_blocks2.insert(p,
+							m_env.getMap().getBlockNoCreateNoEx(p));
+				}
+				// Set blocks not sent
+				for(core::list<u16>::Iterator
+						i = far_players.begin();
+						i != far_players.end(); i++)
+				{
+					u16 peer_id = *i;
+					RemoteClient *client = getClient(peer_id);
+					if(client==NULL)
+						continue;
+					client->SetBlocksNotSent(modified_blocks2);
+				}
 			}
 
 			delete event;
 
-			// Don't send too many at a time
+			/*// Don't send too many at a time
 			count++;
 			if(count >= 1 && m_unsent_map_edit_queue.size() < 100)
-				break;
+				break;*/
+		}
+
+		if(got_any_events)
+		{
+			dstream<<"Server: MapEditEvents:"<<std::endl;
+			prof.print(dstream);
 		}
+		
 	}
 
 	/*
@@ -1746,39 +1799,6 @@ void Server::AsyncRunStep()
 	}
 	
 	/*
-		Step node metadata
-		TODO: Move to ServerEnvironment and utilize active block stuff
-	*/
-	/*{
-		//TimeTaker timer("Step node metadata");
-
-		JMutexAutoLock envlock(m_env_mutex);
-		JMutexAutoLock conlock(m_con_mutex);
-
-		ScopeProfiler sp(&g_profiler, "Server: stepping node metadata");
-
-		core::map<v3s16, MapBlock*> changed_blocks;
-		m_env.getMap().nodeMetadataStep(dtime, changed_blocks);
-		
-		// Use setBlockNotSent
-
-		for(core::map<v3s16, MapBlock*>::Iterator
-				i = changed_blocks.getIterator();
-				i.atEnd() == false; i++)
-		{
-			MapBlock *block = i.getNode()->getValue();
-
-			for(core::map<u16, RemoteClient*>::Iterator
-				i = m_clients.getIterator();
-				i.atEnd()==false; i++)
-			{
-				RemoteClient *client = i.getNode()->getValue();
-				client->SetBlockNotSent(block->getPos());
-			}
-		}
-	}*/
-		
-	/*
 		Trigger emergethread (it somehow gets to a non-triggered but
 		bysy state sometimes)
 	*/
@@ -1809,26 +1829,29 @@ void Server::AsyncRunStep()
 			
 			// Map
 			JMutexAutoLock lock(m_env_mutex);
-			if(((ServerMap*)(&m_env.getMap()))->isSavingEnabled() == true)
-			{
-				// Save only changed parts
-				m_env.getMap().save(true);
 
-				// Delete unused sectors
-				u32 deleted_count = m_env.getMap().unloadUnusedData(
-						g_settings.getFloat("server_unload_unused_sectors_timeout"));
-				if(deleted_count > 0)
-				{
-					dout_server<<"Server: Unloaded "<<deleted_count
-							<<" sectors from memory"<<std::endl;
-				}
+			/*// Unload unused data (delete from memory)
+			m_env.getMap().unloadUnusedData(
+					g_settings.getFloat("server_unload_unused_sectors_timeout"));
+					*/
+			/*u32 deleted_count = m_env.getMap().unloadUnusedData(
+					g_settings.getFloat("server_unload_unused_sectors_timeout"));
+					*/
 
-				// Save players
-				m_env.serializePlayers(m_mapsavedir);
-				
-				// Save environment metadata
-				m_env.saveMeta(m_mapsavedir);
-			}
+			// Save only changed parts
+			m_env.getMap().save(true);
+
+			/*if(deleted_count > 0)
+			{
+				dout_server<<"Server: Unloaded "<<deleted_count
+						<<" blocks from memory"<<std::endl;
+			}*/
+
+			// Save players
+			m_env.serializePlayers(m_mapsavedir);
+			
+			// Save environment metadata
+			m_env.saveMeta(m_mapsavedir);
 		}
 	}
 }
@@ -2392,8 +2415,12 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 							toolname = titem->getToolName();
 						}
 					}
+
+					v3f playerpos = player->getPosition();
+					v3f objpos = obj->getBasePosition();
+					v3f dir = (objpos - playerpos).normalize();
 					
-					u16 wear = obj->punch(toolname);
+					u16 wear = obj->punch(toolname, dir);
 					
 					if(titem)
 					{
@@ -2710,9 +2737,31 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 				MaterialItem *mitem = (MaterialItem*)item;
 				MapNode n;
 				n.d = mitem->getMaterial();
+
+				// Calculate direction for wall mounted stuff
 				if(content_features(n.d).wall_mounted)
 					n.dir = packDir(p_under - p_over);
-				
+
+				// Calculate the direction for furnaces and chests and stuff
+				if(content_features(n.d).param_type == CPT_FACEDIR_SIMPLE)
+				{
+					v3f playerpos = player->getPosition();
+					v3f blockpos = intToFloat(p_over, BS) - playerpos;
+					blockpos = blockpos.normalize();
+					n.param1 = 0;
+					if (fabs(blockpos.X) > fabs(blockpos.Z)) {
+						if (blockpos.X < 0)
+							n.param1 = 3;
+						else
+							n.param1 = 1;
+					} else {
+						if (blockpos.Z < 0)
+							n.param1 = 2;
+						else
+							n.param1 = 0;
+					}
+				}
+
 				/*
 					Send to all close-by players
 				*/
@@ -3286,7 +3335,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 
 void Server::onMapEditEvent(MapEditEvent *event)
 {
-	dstream<<"Server::onMapEditEvent()"<<std::endl;
+	//dstream<<"Server::onMapEditEvent()"<<std::endl;
 	if(m_ignore_map_edit_events)
 		return;
 	MapEditEvent *e = event->clone();
diff --git a/src/server.h b/src/server.h
index b88369ddf..1da004da5 100644
--- a/src/server.h
+++ b/src/server.h
@@ -534,6 +534,7 @@ private:
 	float m_objectdata_timer;
 	float m_emergethread_trigger_timer;
 	float m_savemap_timer;
+	IntervalLimiter m_map_timer_and_unload_interval;
 	
 	// NOTE: If connection and environment are both to be locked,
 	// environment shall be locked first.
diff --git a/src/serverobject.cpp b/src/serverobject.cpp
index d31e9a31c..8acb35f6d 100644
--- a/src/serverobject.cpp
+++ b/src/serverobject.cpp
@@ -19,9 +19,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "serverobject.h"
 #include <fstream>
-#include "environment.h"
 #include "inventory.h"
-#include "collision.h"
 
 core::map<u16, ServerActiveObject::Factory> ServerActiveObject::m_types;
 
@@ -71,600 +69,4 @@ void ServerActiveObject::registerType(u16 type, Factory f)
 }
 
 
-/*
-	TestSAO
-*/
-
-// Prototype
-TestSAO proto_TestSAO(NULL, 0, v3f(0,0,0));
-
-TestSAO::TestSAO(ServerEnvironment *env, u16 id, v3f pos):
-	ServerActiveObject(env, id, pos),
-	m_timer1(0),
-	m_age(0)
-{
-	ServerActiveObject::registerType(getType(), create);
-}
-
-ServerActiveObject* TestSAO::create(ServerEnvironment *env, u16 id, v3f pos,
-		const std::string &data)
-{
-	return new TestSAO(env, id, pos);
-}
-
-void TestSAO::step(float dtime, Queue<ActiveObjectMessage> &messages,
-		bool send_recommended)
-{
-	m_age += dtime;
-	if(m_age > 10)
-	{
-		m_removed = true;
-		return;
-	}
-
-	m_base_position.Y += dtime * BS * 2;
-	if(m_base_position.Y > 8*BS)
-		m_base_position.Y = 2*BS;
-
-	if(send_recommended == false)
-		return;
-
-	m_timer1 -= dtime;
-	if(m_timer1 < 0.0)
-	{
-		m_timer1 += 0.125;
-		//dstream<<"TestSAO: id="<<getId()<<" sending data"<<std::endl;
-
-		std::string data;
-
-		data += itos(0); // 0 = position
-		data += " ";
-		data += itos(m_base_position.X);
-		data += " ";
-		data += itos(m_base_position.Y);
-		data += " ";
-		data += itos(m_base_position.Z);
-
-		ActiveObjectMessage aom(getId(), false, data);
-		messages.push_back(aom);
-	}
-}
-
-
-/*
-	ItemSAO
-*/
-
-// Prototype
-ItemSAO proto_ItemSAO(NULL, 0, v3f(0,0,0), "");
-
-ItemSAO::ItemSAO(ServerEnvironment *env, u16 id, v3f pos,
-		const std::string inventorystring):
-	ServerActiveObject(env, id, pos),
-	m_inventorystring(inventorystring),
-	m_speed_f(0,0,0),
-	m_last_sent_position(0,0,0)
-{
-	ServerActiveObject::registerType(getType(), create);
-}
-
-ServerActiveObject* ItemSAO::create(ServerEnvironment *env, u16 id, v3f pos,
-		const std::string &data)
-{
-	std::istringstream is(data, std::ios::binary);
-	char buf[1];
-	// read version
-	is.read(buf, 1);
-	u8 version = buf[0];
-	// check if version is supported
-	if(version != 0)
-		return NULL;
-	std::string inventorystring = deSerializeString(is);
-	dstream<<"ItemSAO::create(): Creating item \""
-			<<inventorystring<<"\""<<std::endl;
-	return new ItemSAO(env, id, pos, inventorystring);
-}
-
-void ItemSAO::step(float dtime, Queue<ActiveObjectMessage> &messages,
-		bool send_recommended)
-{
-	assert(m_env);
-
-	const float interval = 0.2;
-	if(m_move_interval.step(dtime, interval)==false)
-		return;
-	dtime = interval;
-	
-	core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
-	collisionMoveResult moveresult;
-	// Apply gravity
-	m_speed_f += v3f(0, -dtime*9.81*BS, 0);
-	// Maximum movement without glitches
-	f32 pos_max_d = BS*0.25;
-	// Limit speed
-	if(m_speed_f.getLength()*dtime > pos_max_d)
-		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
-	v3f pos_f = getBasePosition();
-	v3f pos_f_old = pos_f;
-	moveresult = collisionMoveSimple(&m_env->getMap(), pos_max_d,
-			box, dtime, pos_f, m_speed_f);
-	
-	if(send_recommended == false)
-		return;
-
-	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
-	{
-		setBasePosition(pos_f);
-		m_last_sent_position = pos_f;
-
-		std::ostringstream os(std::ios::binary);
-		char buf[6];
-		// command (0 = update position)
-		buf[0] = 0;
-		os.write(buf, 1);
-		// pos
-		writeS32((u8*)buf, m_base_position.X*1000);
-		os.write(buf, 4);
-		writeS32((u8*)buf, m_base_position.Y*1000);
-		os.write(buf, 4);
-		writeS32((u8*)buf, m_base_position.Z*1000);
-		os.write(buf, 4);
-		// create message and add to list
-		ActiveObjectMessage aom(getId(), false, os.str());
-		messages.push_back(aom);
-	}
-}
-
-std::string ItemSAO::getClientInitializationData()
-{
-	std::ostringstream os(std::ios::binary);
-	char buf[6];
-	// version
-	buf[0] = 0;
-	os.write(buf, 1);
-	// pos
-	writeS32((u8*)buf, m_base_position.X*1000);
-	os.write(buf, 4);
-	writeS32((u8*)buf, m_base_position.Y*1000);
-	os.write(buf, 4);
-	writeS32((u8*)buf, m_base_position.Z*1000);
-	os.write(buf, 4);
-	// inventorystring
-	os<<serializeString(m_inventorystring);
-	return os.str();
-}
-
-std::string ItemSAO::getStaticData()
-{
-	dstream<<__FUNCTION_NAME<<std::endl;
-	std::ostringstream os(std::ios::binary);
-	char buf[1];
-	// version
-	buf[0] = 0;
-	os.write(buf, 1);
-	// inventorystring
-	os<<serializeString(m_inventorystring);
-	return os.str();
-}
-
-InventoryItem * ItemSAO::createInventoryItem()
-{
-	try{
-		std::istringstream is(m_inventorystring, std::ios_base::binary);
-		InventoryItem *item = InventoryItem::deSerialize(is);
-		dstream<<__FUNCTION_NAME<<": m_inventorystring=\""
-				<<m_inventorystring<<"\" -> item="<<item
-				<<std::endl;
-		return item;
-	}
-	catch(SerializationError &e)
-	{
-		dstream<<__FUNCTION_NAME<<": serialization error: "
-				<<"m_inventorystring=\""<<m_inventorystring<<"\""<<std::endl;
-		return NULL;
-	}
-}
-
-
-/*
-	RatSAO
-*/
-
-// Prototype
-RatSAO proto_RatSAO(NULL, 0, v3f(0,0,0));
-
-RatSAO::RatSAO(ServerEnvironment *env, u16 id, v3f pos):
-	ServerActiveObject(env, id, pos),
-	m_is_active(false),
-	m_speed_f(0,0,0)
-{
-	ServerActiveObject::registerType(getType(), create);
-
-	m_oldpos = v3f(0,0,0);
-	m_last_sent_position = v3f(0,0,0);
-	m_yaw = 0;
-	m_counter1 = 0;
-	m_counter2 = 0;
-	m_age = 0;
-	m_touching_ground = false;
-}
-
-ServerActiveObject* RatSAO::create(ServerEnvironment *env, u16 id, v3f pos,
-		const std::string &data)
-{
-	std::istringstream is(data, std::ios::binary);
-	char buf[1];
-	// read version
-	is.read(buf, 1);
-	u8 version = buf[0];
-	// check if version is supported
-	if(version != 0)
-		return NULL;
-	return new RatSAO(env, id, pos);
-}
-
-void RatSAO::step(float dtime, Queue<ActiveObjectMessage> &messages,
-		bool send_recommended)
-{
-	assert(m_env);
-
-	if(m_is_active == false)
-	{
-		if(m_inactive_interval.step(dtime, 0.5)==false)
-			return;
-	}
-
-	/*
-		The AI
-	*/
-
-	/*m_age += dtime;
-	if(m_age > 60)
-	{
-		// Die
-		m_removed = true;
-		return;
-	}*/
-
-	// Apply gravity
-	m_speed_f.Y -= dtime*9.81*BS;
-
-	/*
-		Move around if some player is close
-	*/
-	bool player_is_close = false;
-	// Check connected players
-	core::list<Player*> players = m_env->getPlayers(true);
-	core::list<Player*>::Iterator i;
-	for(i = players.begin();
-			i != players.end(); i++)
-	{
-		Player *player = *i;
-		v3f playerpos = player->getPosition();
-		if(m_base_position.getDistanceFrom(playerpos) < BS*10.0)
-		{
-			player_is_close = true;
-			break;
-		}
-	}
-
-	m_is_active = player_is_close;
-	
-	if(player_is_close == false)
-	{
-		m_speed_f.X = 0;
-		m_speed_f.Z = 0;
-	}
-	else
-	{
-		// Move around
-		v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
-		f32 speed = 2*BS;
-		m_speed_f.X = speed * dir.X;
-		m_speed_f.Z = speed * dir.Z;
-
-		if(m_touching_ground && (m_oldpos - m_base_position).getLength()
-				< dtime*speed/2)
-		{
-			m_counter1 -= dtime;
-			if(m_counter1 < 0.0)
-			{
-				m_counter1 += 1.0;
-				m_speed_f.Y = 5.0*BS;
-			}
-		}
-
-		{
-			m_counter2 -= dtime;
-			if(m_counter2 < 0.0)
-			{
-				m_counter2 += (float)(myrand()%100)/100*3.0;
-				m_yaw += ((float)(myrand()%200)-100)/100*180;
-				m_yaw = wrapDegrees(m_yaw);
-			}
-		}
-	}
-	
-	m_oldpos = m_base_position;
-
-	/*
-		Move it, with collision detection
-	*/
-
-	core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
-	collisionMoveResult moveresult;
-	// Maximum movement without glitches
-	f32 pos_max_d = BS*0.25;
-	// Limit speed
-	if(m_speed_f.getLength()*dtime > pos_max_d)
-		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
-	v3f pos_f = getBasePosition();
-	v3f pos_f_old = pos_f;
-	moveresult = collisionMoveSimple(&m_env->getMap(), pos_max_d,
-			box, dtime, pos_f, m_speed_f);
-	m_touching_ground = moveresult.touching_ground;
-	
-	setBasePosition(pos_f);
-
-	if(send_recommended == false)
-		return;
-
-	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
-	{
-		m_last_sent_position = pos_f;
-
-		std::ostringstream os(std::ios::binary);
-		// command (0 = update position)
-		writeU8(os, 0);
-		// pos
-		writeV3F1000(os, m_base_position);
-		// yaw
-		writeF1000(os, m_yaw);
-		// create message and add to list
-		ActiveObjectMessage aom(getId(), false, os.str());
-		messages.push_back(aom);
-	}
-}
-
-std::string RatSAO::getClientInitializationData()
-{
-	std::ostringstream os(std::ios::binary);
-	// version
-	writeU8(os, 0);
-	// pos
-	writeV3F1000(os, m_base_position);
-	return os.str();
-}
-
-std::string RatSAO::getStaticData()
-{
-	//dstream<<__FUNCTION_NAME<<std::endl;
-	std::ostringstream os(std::ios::binary);
-	// version
-	writeU8(os, 0);
-	return os.str();
-}
-
-InventoryItem* RatSAO::createPickedUpItem()
-{
-	std::istringstream is("CraftItem rat 1", std::ios_base::binary);
-	InventoryItem *item = InventoryItem::deSerialize(is);
-	return item;
-}
-
-/*
-	Oerkki1SAO
-*/
-
-// Prototype
-Oerkki1SAO proto_Oerkki1SAO(NULL, 0, v3f(0,0,0));
-
-Oerkki1SAO::Oerkki1SAO(ServerEnvironment *env, u16 id, v3f pos):
-	ServerActiveObject(env, id, pos),
-	m_is_active(false),
-	m_speed_f(0,0,0)
-{
-	ServerActiveObject::registerType(getType(), create);
-
-	m_oldpos = v3f(0,0,0);
-	m_last_sent_position = v3f(0,0,0);
-	m_yaw = 0;
-	m_counter1 = 0;
-	m_counter2 = 0;
-	m_age = 0;
-	m_touching_ground = false;
-	m_hp = 20;
-}
-
-ServerActiveObject* Oerkki1SAO::create(ServerEnvironment *env, u16 id, v3f pos,
-		const std::string &data)
-{
-	std::istringstream is(data, std::ios::binary);
-	// read version
-	u8 version = readU8(is);
-	// read hp
-	u8 hp = readU8(is);
-	// check if version is supported
-	if(version != 0)
-		return NULL;
-	Oerkki1SAO *o = new Oerkki1SAO(env, id, pos);
-	o->m_hp = hp;
-	return o;
-}
-
-void Oerkki1SAO::step(float dtime, Queue<ActiveObjectMessage> &messages,
-		bool send_recommended)
-{
-	assert(m_env);
-
-	if(m_is_active == false)
-	{
-		if(m_inactive_interval.step(dtime, 0.5)==false)
-			return;
-	}
-
-	/*
-		The AI
-	*/
-
-	m_age += dtime;
-	if(m_age > 120)
-	{
-		// Die
-		m_removed = true;
-		return;
-	}
-
-	// Apply gravity
-	m_speed_f.Y -= dtime*9.81*BS;
-
-	/*
-		Move around if some player is close
-	*/
-	bool player_is_close = false;
-	v3f near_player_pos;
-	// Check connected players
-	core::list<Player*> players = m_env->getPlayers(true);
-	core::list<Player*>::Iterator i;
-	for(i = players.begin();
-			i != players.end(); i++)
-	{
-		Player *player = *i;
-		v3f playerpos = player->getPosition();
-		if(m_base_position.getDistanceFrom(playerpos) < BS*15.0)
-		{
-			player_is_close = true;
-			near_player_pos = playerpos;
-			break;
-		}
-	}
-
-	m_is_active = player_is_close;
-	
-	if(player_is_close == false)
-	{
-		m_speed_f.X = 0;
-		m_speed_f.Z = 0;
-	}
-	else
-	{
-		// Move around
-
-		v3f ndir = near_player_pos - m_base_position;
-		ndir.Y = 0;
-		ndir /= ndir.getLength();
-		f32 nyaw = 180./PI*atan2(ndir.Z,ndir.X);
-		if(nyaw < m_yaw - 180)
-			nyaw += 360;
-		else if(nyaw > m_yaw + 180)
-			nyaw -= 360;
-		m_yaw = 0.95*m_yaw + 0.05*nyaw;
-		m_yaw = wrapDegrees(m_yaw);
-
-		v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
-		f32 speed = 2*BS;
-		m_speed_f.X = speed * dir.X;
-		m_speed_f.Z = speed * dir.Z;
-
-		if(m_touching_ground && (m_oldpos - m_base_position).getLength()
-				< dtime*speed/2)
-		{
-			m_counter1 -= dtime;
-			if(m_counter1 < 0.0)
-			{
-				m_counter1 += 1.0;
-				// Jump
-				m_speed_f.Y = 5.0*BS;
-			}
-		}
-
-		{
-			m_counter2 -= dtime;
-			if(m_counter2 < 0.0)
-			{
-				m_counter2 += (float)(myrand()%100)/100*3.0;
-				//m_yaw += ((float)(myrand()%200)-100)/100*180;
-				m_yaw += ((float)(myrand()%200)-100)/100*90;
-				m_yaw = wrapDegrees(m_yaw);
-			}
-		}
-	}
-	
-	m_oldpos = m_base_position;
-
-	/*
-		Move it, with collision detection
-	*/
-
-	core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*5./3.,BS/3.);
-	collisionMoveResult moveresult;
-	// Maximum movement without glitches
-	f32 pos_max_d = BS*0.25;
-	// Limit speed
-	if(m_speed_f.getLength()*dtime > pos_max_d)
-		m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
-	v3f pos_f = getBasePosition();
-	v3f pos_f_old = pos_f;
-	moveresult = collisionMoveSimple(&m_env->getMap(), pos_max_d,
-			box, dtime, pos_f, m_speed_f);
-	m_touching_ground = moveresult.touching_ground;
-	
-	setBasePosition(pos_f);
-
-	if(send_recommended == false)
-		return;
-
-	if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
-	{
-		m_last_sent_position = pos_f;
-
-		std::ostringstream os(std::ios::binary);
-		// command (0 = update position)
-		writeU8(os, 0);
-		// pos
-		writeV3F1000(os, m_base_position);
-		// yaw
-		writeF1000(os, m_yaw);
-		// create message and add to list
-		ActiveObjectMessage aom(getId(), false, os.str());
-		messages.push_back(aom);
-	}
-}
-
-std::string Oerkki1SAO::getClientInitializationData()
-{
-	std::ostringstream os(std::ios::binary);
-	// version
-	writeU8(os, 0);
-	// pos
-	writeV3F1000(os, m_base_position);
-	return os.str();
-}
-
-std::string Oerkki1SAO::getStaticData()
-{
-	//dstream<<__FUNCTION_NAME<<std::endl;
-	std::ostringstream os(std::ios::binary);
-	// version
-	writeU8(os, 0);
-	// hp
-	writeU8(os, m_hp);
-	return os.str();
-}
-
-u16 Oerkki1SAO::punch(const std::string &toolname)
-{
-	u16 amount = 5;
-	if(amount < m_hp)
-	{
-		m_hp -= amount;
-	}
-	else
-	{
-		// Die
-		m_removed = true;
-	}
-	return 65536/100;
-}
-
 
diff --git a/src/serverobject.h b/src/serverobject.h
index 955969819..c008bf93e 100644
--- a/src/serverobject.h
+++ b/src/serverobject.h
@@ -78,8 +78,7 @@ public:
 			same time so that the data can be combined in a single
 			packet.
 	*/
-	virtual void step(float dtime, Queue<ActiveObjectMessage> &messages,
-			bool send_recommended){}
+	virtual void step(float dtime, bool send_recommended){}
 	
 	/*
 		The return value of this is passed to the client-side object
@@ -104,7 +103,8 @@ public:
 		If the object doesn't return an item, this will be called.
 		Return value is tool wear.
 	*/
-	virtual u16 punch(const std::string &toolname){return 0;}
+	virtual u16 punch(const std::string &toolname, v3f dir)
+	{return 0;}
 	
 	/*
 		Number of players which know about this object. Object won't be
@@ -144,6 +144,11 @@ public:
 	*/
 	v3s16 m_static_block;
 	
+	/*
+		Queue of messages to be sent to the client
+	*/
+	Queue<ActiveObjectMessage> m_messages_out;
+	
 protected:
 	// Used for creating objects based on type
 	typedef ServerActiveObject* (*Factory)
@@ -159,96 +164,5 @@ private:
 	static core::map<u16, Factory> m_types;
 };
 
-class TestSAO : public ServerActiveObject
-{
-public:
-	TestSAO(ServerEnvironment *env, u16 id, v3f pos);
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_TEST;}
-	static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
-			const std::string &data);
-	void step(float dtime, Queue<ActiveObjectMessage> &messages,
-			bool send_recommended);
-private:
-	float m_timer1;
-	float m_age;
-};
-
-class ItemSAO : public ServerActiveObject
-{
-public:
-	ItemSAO(ServerEnvironment *env, u16 id, v3f pos,
-			const std::string inventorystring);
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_ITEM;}
-	static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
-			const std::string &data);
-	void step(float dtime, Queue<ActiveObjectMessage> &messages,
-			bool send_recommended);
-	std::string getClientInitializationData();
-	std::string getStaticData();
-	InventoryItem* createInventoryItem();
-	InventoryItem* createPickedUpItem(){return createInventoryItem();}
-private:
-	std::string m_inventorystring;
-	v3f m_speed_f;
-	v3f m_last_sent_position;
-	IntervalLimiter m_move_interval;
-};
-
-class RatSAO : public ServerActiveObject
-{
-public:
-	RatSAO(ServerEnvironment *env, u16 id, v3f pos);
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_RAT;}
-	static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
-			const std::string &data);
-	void step(float dtime, Queue<ActiveObjectMessage> &messages,
-			bool send_recommended);
-	std::string getClientInitializationData();
-	std::string getStaticData();
-	InventoryItem* createPickedUpItem();
-private:
-	bool m_is_active;
-	IntervalLimiter m_inactive_interval;
-	v3f m_speed_f;
-	v3f m_oldpos;
-	v3f m_last_sent_position;
-	float m_yaw;
-	float m_counter1;
-	float m_counter2;
-	float m_age;
-	bool m_touching_ground;
-};
-
-class Oerkki1SAO : public ServerActiveObject
-{
-public:
-	Oerkki1SAO(ServerEnvironment *env, u16 id, v3f pos);
-	u8 getType() const
-		{return ACTIVEOBJECT_TYPE_OERKKI1;}
-	static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
-			const std::string &data);
-	void step(float dtime, Queue<ActiveObjectMessage> &messages,
-			bool send_recommended);
-	std::string getClientInitializationData();
-	std::string getStaticData();
-	InventoryItem* createPickedUpItem(){return NULL;}
-	u16 punch(const std::string &toolname);
-private:
-	bool m_is_active;
-	IntervalLimiter m_inactive_interval;
-	v3f m_speed_f;
-	v3f m_oldpos;
-	v3f m_last_sent_position;
-	float m_yaw;
-	float m_counter1;
-	float m_counter2;
-	float m_age;
-	bool m_touching_ground;
-	u8 m_hp;
-};
-
 #endif
 
diff --git a/src/test.cpp b/src/test.cpp
index 7b86750d8..7d71552a8 100644
--- a/src/test.cpp
+++ b/src/test.cpp
@@ -31,6 +31,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <sstream>
 #include "porting.h"
 #include "content_mapnode.h"
+#include "mapsector.h"
 
 /*
 	Asserts that the exception occurs
@@ -339,6 +340,12 @@ struct TestVoxelManipulator
 	}
 };
 
+/*
+	NOTE: These tests became non-working then NodeContainer was removed.
+	      These should be redone, utilizing some kind of a virtual
+		  interface for Map (IMap would be fine).
+*/
+#if 0
 struct TestMapBlock
 {
 	class TC : public NodeContainer
@@ -641,13 +648,13 @@ struct TestMapSector
 		// Create one with no heightmaps
 		ServerMapSector sector(&parent, v2s16(1,1));
 		
-		EXCEPTION_CHECK(InvalidPositionException, sector.getBlockNoCreate(0));
-		EXCEPTION_CHECK(InvalidPositionException, sector.getBlockNoCreate(1));
+		assert(sector.getBlockNoCreateNoEx(0) == 0);
+		assert(sector.getBlockNoCreateNoEx(1) == 0);
 
 		MapBlock * bref = sector.createBlankBlock(-2);
 		
-		EXCEPTION_CHECK(InvalidPositionException, sector.getBlockNoCreate(0));
-		assert(sector.getBlockNoCreate(-2) == bref);
+		assert(sector.getBlockNoCreateNoEx(0) == 0);
+		assert(sector.getBlockNoCreateNoEx(-2) == bref);
 		
 		//TODO: Check for AlreadyExistsException
 
@@ -662,6 +669,7 @@ struct TestMapSector
 
 	}
 };
+#endif
 
 struct TestSocket
 {
@@ -1028,8 +1036,8 @@ void run_tests()
 	TEST(TestCompress);
 	TEST(TestMapNode);
 	TEST(TestVoxelManipulator);
-	TEST(TestMapBlock);
-	TEST(TestMapSector);
+	//TEST(TestMapBlock);
+	//TEST(TestMapSector);
 	if(INTERNET_SIMULATOR == false){
 		TEST(TestSocket);
 		dout_con<<"=== BEGIN RUNNING UNIT TESTS FOR CONNECTION ==="<<std::endl;