]> git.lizzy.rs Git - dragonfireclient.git/blobdiff - src/map.cpp
Prevent world creation if the world already exists
[dragonfireclient.git] / src / map.cpp
index 1eb8ac2fc27bf8f264961f1cbd50b9913656e127..39c6d292b3248569a0ffe382220250e24b01a440 100644 (file)
@@ -3,16 +3,16 @@ 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
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
@@ -21,22 +21,18 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "mapsector.h"
 #include "mapblock.h"
 #include "main.h"
-#ifndef SERVER
-#include "client.h"
-#endif
 #include "filesys.h"
-#include "utility.h"
 #include "voxel.h"
 #include "porting.h"
 #include "mapgen.h"
 #include "nodemetadata.h"
-#include "content_mapnode.h"
-#ifndef SERVER
-#include <IMaterialRenderer.h>
-#endif
 #include "settings.h"
 #include "log.h"
 #include "profiler.h"
+#include "nodedef.h"
+#include "gamedef.h"
+#include "util/directiontables.h"
+#include "rollback_interface.h"
 
 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
 
@@ -61,8 +57,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
        Map
 */
 
-Map::Map(std::ostream &dout):
+Map::Map(std::ostream &dout, IGameDef *gamedef):
        m_dout(dout),
+       m_gamedef(gamedef),
        m_sector_cache(NULL)
 {
        /*m_sector_mutex.Init();
@@ -206,6 +203,15 @@ void Map::setNode(v3s16 p, MapNode & n)
        v3s16 blockpos = getNodeBlockPos(p);
        MapBlock *block = getBlockNoCreate(blockpos);
        v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
+       // Never allow placing CONTENT_IGNORE, it fucks up stuff
+       if(n.getContent() == CONTENT_IGNORE){
+               errorstream<<"Map::setNode(): Not allowing to place CONTENT_IGNORE"
+                               <<" while trying to replace \""
+                               <<m_gamedef->ndef()->get(block->getNodeNoCheck(relpos)).name
+                               <<"\" at "<<PP(p)<<" (block "<<PP(blockpos)<<")"<<std::endl;
+               debug_stacks_print_to(infostream);
+               return;
+       }
        block->setNodeNoCheck(relpos, n);
 }
 
@@ -232,6 +238,8 @@ void Map::unspreadLight(enum LightBank bank,
                core::map<v3s16, bool> & light_sources,
                core::map<v3s16, MapBlock*>  & modified_blocks)
 {
+       INodeDefManager *nodemgr = m_gamedef->ndef();
+
        v3s16 dirs[6] = {
                v3s16(0,0,1), // back
                v3s16(0,1,0), // top
@@ -328,19 +336,20 @@ void Map::unspreadLight(enum LightBank bank,
                                        If the neighbor is dimmer than what was specified
                                        as oldlight (the light of the previous node)
                                */
-                               if(n2.getLight(bank) < oldlight)
+                               if(n2.getLight(bank, nodemgr) < oldlight)
                                {
                                        /*
                                                And the neighbor is transparent and it has some light
                                        */
-                                       if(n2.light_propagates() && n2.getLight(bank) != 0)
+                                       if(nodemgr->get(n2).light_propagates
+                                                       && n2.getLight(bank, nodemgr) != 0)
                                        {
                                                /*
                                                        Set light to 0 and add to queue
                                                */
 
-                                               u8 current_light = n2.getLight(bank);
-                                               n2.setLight(bank, 0);
+                                               u8 current_light = n2.getLight(bank, nodemgr);
+                                               n2.setLight(bank, 0, nodemgr);
                                                block->setNode(relpos, n2);
 
                                                unlighted_nodes.insert(n2pos, current_light);
@@ -414,6 +423,8 @@ void Map::spreadLight(enum LightBank bank,
                core::map<v3s16, bool> & from_nodes,
                core::map<v3s16, MapBlock*> & modified_blocks)
 {
+       INodeDefManager *nodemgr = m_gamedef->ndef();
+
        const v3s16 dirs[6] = {
                v3s16(0,0,1), // back
                v3s16(0,1,0), // top
@@ -472,7 +483,7 @@ void Map::spreadLight(enum LightBank bank,
                // Get node straight from the block
                MapNode n = block->getNode(relpos);
 
-               u8 oldlight = n.getLight(bank);
+               u8 oldlight = n.getLight(bank, nodemgr);
                u8 newlight = diminish_light(oldlight);
 
                // Loop through 6 neighbors
@@ -510,7 +521,7 @@ void Map::spreadLight(enum LightBank bank,
                                        If the neighbor is brighter than the current node,
                                        add to list (it will light up this node on its turn)
                                */
-                               if(n2.getLight(bank) > undiminish_light(oldlight))
+                               if(n2.getLight(bank, nodemgr) > undiminish_light(oldlight))
                                {
                                        lighted_nodes.insert(n2pos, true);
                                        //lighted_nodes.push_back(n2pos);
@@ -520,11 +531,11 @@ void Map::spreadLight(enum LightBank bank,
                                        If the neighbor is dimmer than how much light this node
                                        would spread on it, add to list
                                */
-                               if(n2.getLight(bank) < newlight)
+                               if(n2.getLight(bank, nodemgr) < newlight)
                                {
-                                       if(n2.light_propagates())
+                                       if(nodemgr->get(n2).light_propagates)
                                        {
-                                               n2.setLight(bank, newlight);
+                                               n2.setLight(bank, newlight, nodemgr);
                                                block->setNode(relpos, n2);
                                                lighted_nodes.insert(n2pos, true);
                                                //lighted_nodes.push_back(n2pos);
@@ -573,6 +584,8 @@ void Map::lightNeighbors(enum LightBank bank,
 
 v3s16 Map::getBrightestNeighbour(enum LightBank bank, v3s16 p)
 {
+       INodeDefManager *nodemgr = m_gamedef->ndef();
+
        v3s16 dirs[6] = {
                v3s16(0,0,1), // back
                v3s16(0,1,0), // top
@@ -598,8 +611,8 @@ v3s16 Map::getBrightestNeighbour(enum LightBank bank, v3s16 p)
                {
                        continue;
                }
-               if(n2.getLight(bank) > brightest_light || found_something == false){
-                       brightest_light = n2.getLight(bank);
+               if(n2.getLight(bank, nodemgr) > brightest_light || found_something == false){
+                       brightest_light = n2.getLight(bank, nodemgr);
                        brightest_pos = n2pos;
                        found_something = true;
                }
@@ -622,6 +635,8 @@ v3s16 Map::getBrightestNeighbour(enum LightBank bank, v3s16 p)
 s16 Map::propagateSunlight(v3s16 start,
                core::map<v3s16, MapBlock*> & modified_blocks)
 {
+       INodeDefManager *nodemgr = m_gamedef->ndef();
+
        s16 y = start.Y;
        for(; ; y--)
        {
@@ -640,23 +655,15 @@ s16 Map::propagateSunlight(v3s16 start,
                v3s16 relpos = pos - blockpos*MAP_BLOCKSIZE;
                MapNode n = block->getNode(relpos);
 
-               if(n.sunlight_propagates())
+               if(nodemgr->get(n).sunlight_propagates)
                {
-                       n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
+                       n.setLight(LIGHTBANK_DAY, LIGHT_SUN, nodemgr);
                        block->setNode(relpos, n);
 
                        modified_blocks.insert(blockpos, block);
                }
                else
                {
-                       /*// Turn mud into grass
-                       if(n.getContent() == CONTENT_MUD)
-                       {
-                               n.setContent(CONTENT_GRASS);
-                               block->setNode(relpos, n);
-                               modified_blocks.insert(blockpos, block);
-                       }*/
-
                        // Sunlight goes no further
                        break;
                }
@@ -668,6 +675,8 @@ void Map::updateLighting(enum LightBank bank,
                core::map<v3s16, MapBlock*> & a_blocks,
                core::map<v3s16, MapBlock*> & modified_blocks)
 {
+       INodeDefManager *nodemgr = m_gamedef->ndef();
+
        /*m_dout<<DTIME<<"Map::updateLighting(): "
                        <<a_blocks.size()<<" blocks."<<std::endl;*/
 
@@ -683,6 +692,11 @@ void Map::updateLighting(enum LightBank bank,
 
        core::map<v3s16, u8> unlight_from;
 
+       int num_bottom_invalid = 0;
+       
+       {
+       //TimeTaker t("first stuff");
+
        core::map<v3s16, MapBlock*>::Iterator i;
        i = a_blocks.getIterator();
        for(; i.atEnd() == false; i++)
@@ -696,6 +710,7 @@ void Map::updateLighting(enum LightBank bank,
                                break;
 
                        v3s16 pos = block->getPos();
+                       v3s16 posnodes = block->getPosRelative();
                        modified_blocks.insert(pos, block);
 
                        blocks_to_update.insert(pos, block);
@@ -710,20 +725,23 @@ void Map::updateLighting(enum LightBank bank,
 
                                try{
                                        v3s16 p(x,y,z);
-                                       MapNode n = block->getNode(v3s16(x,y,z));
-                                       u8 oldlight = n.getLight(bank);
-                                       n.setLight(bank, 0);
-                                       block->setNode(v3s16(x,y,z), n);
+                                       MapNode n = block->getNode(p);
+                                       u8 oldlight = n.getLight(bank, nodemgr);
+                                       n.setLight(bank, 0, nodemgr);
+                                       block->setNode(p, n);
+
+                                       // If node sources light, add to list
+                                       u8 source = nodemgr->get(n).light_source;
+                                       if(source != 0)
+                                               light_sources[p + posnodes] = true;
 
                                        // Collect borders for unlighting
-                                       if(x==0 || x == MAP_BLOCKSIZE-1
+                                       if((x==0 || x == MAP_BLOCKSIZE-1
                                        || y==0 || y == MAP_BLOCKSIZE-1
                                        || z==0 || z == MAP_BLOCKSIZE-1)
+                                       && oldlight != 0)
                                        {
-                                               v3s16 p_map = p + v3s16(
-                                                               MAP_BLOCKSIZE*pos.X,
-                                                               MAP_BLOCKSIZE*pos.Y,
-                                                               MAP_BLOCKSIZE*pos.Z);
+                                               v3s16 p_map = p + posnodes;
                                                unlight_from.insert(p_map, oldlight);
                                        }
                                }
@@ -743,6 +761,9 @@ void Map::updateLighting(enum LightBank bank,
                        {
                                bool bottom_valid = block->propagateSunlight(light_sources);
 
+                               if(!bottom_valid)
+                                       num_bottom_invalid++;
+
                                // If bottom is valid, we're done.
                                if(bottom_valid)
                                        break;
@@ -775,7 +796,9 @@ void Map::updateLighting(enum LightBank bank,
 
                }
        }
-       
+
+       }
+
        /*
                Enable this to disable proper lighting for speeding up map
                generation for testing or whatever
@@ -795,38 +818,43 @@ void Map::updateLighting(enum LightBank bank,
        }
 #endif
 
-#if 0
+#if 1
        {
-               TimeTaker timer("unspreadLight");
+               //TimeTaker timer("unspreadLight");
                unspreadLight(bank, unlight_from, light_sources, modified_blocks);
        }
 
-       if(debug)
+       /*if(debug)
        {
                u32 diff = modified_blocks.size() - count_was;
                count_was = modified_blocks.size();
                infostream<<"unspreadLight modified "<<diff<<std::endl;
-       }
+       }*/
 
        {
-               TimeTaker timer("spreadLight");
+               //TimeTaker timer("spreadLight");
                spreadLight(bank, light_sources, modified_blocks);
        }
 
-       if(debug)
+       /*if(debug)
        {
                u32 diff = modified_blocks.size() - count_was;
                count_was = modified_blocks.size();
                infostream<<"spreadLight modified "<<diff<<std::endl;
-       }
+       }*/
 #endif
 
+#if 0
        {
                //MapVoxelManipulator vmanip(this);
-
+               
                // Make a manual voxel manipulator and load all the blocks
                // that touch the requested blocks
                ManualMapVoxelManipulator vmanip(this);
+
+               {
+               //TimeTaker timer("initialEmerge");
+
                core::map<v3s16, MapBlock*>::Iterator i;
                i = blocks_to_update.getIterator();
                for(; i.atEnd() == false; i++)
@@ -846,28 +874,29 @@ void Map::updateLighting(enum LightBank bank,
                        for(s16 y=-1; y<=1; y++)
                        for(s16 x=-1; x<=1; x++)
                        {
-                               v3s16 p(x,y,z);
-                               MapBlock *block = getBlockNoCreateNoEx(p);
+                               v3s16 p2 = p + v3s16(x,y,z);
+                               MapBlock *block = getBlockNoCreateNoEx(p2);
                                if(block == NULL)
                                        continue;
                                if(block->isDummy())
                                        continue;
                                if(block->getLightingExpired())
                                        continue;
-                               vmanip.initialEmerge(p, p);
+                               vmanip.initialEmerge(p2, p2);
                        }*/
 
                        // Lighting of block will be updated completely
                        block->setLightingExpired(false);
                }
+               }
 
                {
                        //TimeTaker timer("unSpreadLight");
-                       vmanip.unspreadLight(bank, unlight_from, light_sources);
+                       vmanip.unspreadLight(bank, unlight_from, light_sources, nodemgr);
                }
                {
                        //TimeTaker timer("spreadLight");
-                       vmanip.spreadLight(bank, light_sources);
+                       vmanip.spreadLight(bank, light_sources, nodemgr);
                }
                {
                        //TimeTaker timer("blitBack");
@@ -876,6 +905,7 @@ void Map::updateLighting(enum LightBank bank,
                /*infostream<<"emerge_time="<<emerge_time<<std::endl;
                emerge_time = 0;*/
        }
+#endif
 
        //m_dout<<"Done ("<<getTimestamp()<<")"<<std::endl;
 }
@@ -894,19 +924,21 @@ void Map::updateLighting(core::map<v3s16, MapBlock*> & a_blocks,
                        i.atEnd() == false; i++)
        {
                MapBlock *block = i.getNode()->getValue();
-               block->updateDayNightDiff();
+               block->expireDayNightDiff();
        }
 }
 
 /*
 */
 void Map::addNodeAndUpdate(v3s16 p, MapNode n,
-               core::map<v3s16, MapBlock*> &modified_blocks, std::string &player_name)
+               core::map<v3s16, MapBlock*> &modified_blocks)
 {
+       INodeDefManager *ndef = m_gamedef->ndef();
+
        /*PrintInfo(m_dout);
        m_dout<<DTIME<<"Map::addNodeAndUpdate(): p=("
                        <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
-
+       
        /*
                From this node to nodes underneath:
                If lighting is sunlight (1.0), unlight neighbours and
@@ -919,6 +951,11 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 
        bool node_under_sunlight = true;
        core::map<v3s16, bool> light_sources;
+       
+       /*
+               Collect old node for rollback
+       */
+       RollbackNode rollback_oldnode(this, p, m_gamedef);
 
        /*
                If there is a node at top and it doesn't have sunlight,
@@ -929,46 +966,13 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
        try{
                MapNode topnode = getNode(toppos);
 
-               if(topnode.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
+               if(topnode.getLight(LIGHTBANK_DAY, ndef) != LIGHT_SUN)
                        node_under_sunlight = false;
        }
        catch(InvalidPositionException &e)
        {
        }
 
-#if 0
-       /*
-               If the new node is solid and there is grass below, change it to mud
-       */
-       if(content_features(n).walkable == true)
-       {
-               try{
-                       MapNode bottomnode = getNode(bottompos);
-
-                       if(bottomnode.getContent() == CONTENT_GRASS
-                                       || bottomnode.getContent() == CONTENT_GRASS_FOOTSTEPS)
-                       {
-                               bottomnode.setContent(CONTENT_MUD);
-                               setNode(bottompos, bottomnode);
-                       }
-               }
-               catch(InvalidPositionException &e)
-               {
-               }
-       }
-#endif
-
-#if 0
-       /*
-               If the new node is mud and it is under sunlight, change it
-               to grass
-       */
-       if(n.getContent() == CONTENT_MUD && node_under_sunlight)
-       {
-               n.setContent(CONTENT_GRASS);
-       }
-#endif
-
        /*
                Remove all light that has come out of this node
        */
@@ -982,7 +986,7 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
        {
                enum LightBank bank = banks[i];
 
-               u8 lightwas = getNode(p).getLight(bank);
+               u8 lightwas = getNode(p).getLight(bank, ndef);
 
                // Add the block of the added node to modified_blocks
                v3s16 blockpos = getNodeBlockPos(p);
@@ -999,35 +1003,29 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
                // light again into this.
                unLightNeighbors(bank, p, lightwas, light_sources, modified_blocks);
 
-               n.setLight(bank, 0);
+               n.setLight(bank, 0, ndef);
        }
 
        /*
                If node lets sunlight through and is under sunlight, it has
                sunlight too.
        */
-       if(node_under_sunlight && content_features(n).sunlight_propagates)
+       if(node_under_sunlight && ndef->get(n).sunlight_propagates)
        {
-               n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
+               n.setLight(LIGHTBANK_DAY, LIGHT_SUN, ndef);
        }
 
        /*
-               Set the node on the map
+               Remove node metadata
        */
 
-       setNode(p, n);
+       removeNodeMetadata(p);
 
        /*
-               Add intial metadata
+               Set the node on the map
        */
 
-       NodeMetadata *meta_proto = content_features(n).initial_metadata;
-       if(meta_proto)
-       {
-               NodeMetadata *meta = meta_proto->clone();
-               meta->setOwner(player_name);
-               setNodeMetadata(p, meta);
-       }
+       setNode(p, n);
 
        /*
                If node is under sunlight and doesn't let sunlight through,
@@ -1036,7 +1034,7 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
                TODO: This could be optimized by mass-unlighting instead
                          of looping
        */
-       if(node_under_sunlight && !content_features(n).sunlight_propagates)
+       if(node_under_sunlight && !ndef->get(n).sunlight_propagates)
        {
                s16 y = p.Y - 1;
                for(;; y--){
@@ -1052,12 +1050,12 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
                                break;
                        }
 
-                       if(n2.getLight(LIGHTBANK_DAY) == LIGHT_SUN)
+                       if(n2.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
                        {
                                unLightNeighbors(LIGHTBANK_DAY,
-                                               n2pos, n2.getLight(LIGHTBANK_DAY),
+                                               n2pos, n2.getLight(LIGHTBANK_DAY, ndef),
                                                light_sources, modified_blocks);
-                               n2.setLight(LIGHTBANK_DAY, 0);
+                               n2.setLight(LIGHTBANK_DAY, 0, ndef);
                                setNode(n2pos, n2);
                        }
                        else
@@ -1083,7 +1081,18 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
                        i.atEnd() == false; i++)
        {
                MapBlock *block = i.getNode()->getValue();
-               block->updateDayNightDiff();
+               block->expireDayNightDiff();
+       }
+
+       /*
+               Report for rollback
+       */
+       if(m_gamedef->rollback())
+       {
+               RollbackNode rollback_newnode(this, p, m_gamedef);
+               RollbackAction action;
+               action.setSetNode(p, rollback_oldnode, rollback_newnode);
+               m_gamedef->rollback()->reportAction(action);
        }
 
        /*
@@ -1107,7 +1116,7 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
                v3s16 p2 = p + dirs[i];
 
                MapNode n2 = getNode(p2);
-               if(content_liquid(n2.getContent()) || n2.getContent() == CONTENT_AIR)
+               if(ndef->get(n2).isLiquid() || n2.getContent() == CONTENT_AIR)
                {
                        m_transforming_liquid.push_back(p2);
                }
@@ -1123,6 +1132,8 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 void Map::removeNodeAndUpdate(v3s16 p,
                core::map<v3s16, MapBlock*> &modified_blocks)
 {
+       INodeDefManager *ndef = m_gamedef->ndef();
+
        /*PrintInfo(m_dout);
        m_dout<<DTIME<<"Map::removeNodeAndUpdate(): p=("
                        <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
@@ -1134,6 +1145,11 @@ void Map::removeNodeAndUpdate(v3s16 p,
        // Node will be replaced with this
        content_t replace_material = CONTENT_AIR;
 
+       /*
+               Collect old node for rollback
+       */
+       RollbackNode rollback_oldnode(this, p, m_gamedef);
+
        /*
                If there is a node at top and it doesn't have sunlight,
                there will be no sunlight going down.
@@ -1141,7 +1157,7 @@ void Map::removeNodeAndUpdate(v3s16 p,
        try{
                MapNode topnode = getNode(toppos);
 
-               if(topnode.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
+               if(topnode.getLight(LIGHTBANK_DAY, ndef) != LIGHT_SUN)
                        node_under_sunlight = false;
        }
        catch(InvalidPositionException &e)
@@ -1163,7 +1179,7 @@ void Map::removeNodeAndUpdate(v3s16 p,
                        Unlight neighbors (in case the node is a light source)
                */
                unLightNeighbors(bank, p,
-                               getNode(p).getLight(bank),
+                               getNode(p).getLight(bank, ndef),
                                light_sources, modified_blocks);
        }
 
@@ -1225,7 +1241,7 @@ void Map::removeNodeAndUpdate(v3s16 p,
                // TODO: Is this needed? Lighting is cleared up there already.
                try{
                        MapNode n = getNode(p);
-                       n.setLight(LIGHTBANK_DAY, 0);
+                       n.setLight(LIGHTBANK_DAY, 0, ndef);
                        setNode(p, n);
                }
                catch(InvalidPositionException &e)
@@ -1257,7 +1273,18 @@ void Map::removeNodeAndUpdate(v3s16 p,
                        i.atEnd() == false; i++)
        {
                MapBlock *block = i.getNode()->getValue();
-               block->updateDayNightDiff();
+               block->expireDayNightDiff();
+       }
+
+       /*
+               Report for rollback
+       */
+       if(m_gamedef->rollback())
+       {
+               RollbackNode rollback_newnode(this, p, m_gamedef);
+               RollbackAction action;
+               action.setSetNode(p, rollback_oldnode, rollback_newnode);
+               m_gamedef->rollback()->reportAction(action);
        }
 
        /*
@@ -1281,7 +1308,7 @@ void Map::removeNodeAndUpdate(v3s16 p,
                v3s16 p2 = p + dirs[i];
 
                MapNode n2 = getNode(p2);
-               if(content_liquid(n2.getContent()) || n2.getContent() == CONTENT_AIR)
+               if(ndef->get(n2).isLiquid() || n2.getContent() == CONTENT_AIR)
                {
                        m_transforming_liquid.push_back(p2);
                }
@@ -1302,8 +1329,7 @@ bool Map::addNodeWithEvent(v3s16 p, MapNode n)
        bool succeeded = true;
        try{
                core::map<v3s16, MapBlock*> modified_blocks;
-               std::string st = std::string("");
-               addNodeAndUpdate(p, n, modified_blocks, st);
+               addNodeAndUpdate(p, n, modified_blocks);
 
                // Copy modified_blocks to event
                for(core::map<v3s16, MapBlock*>::Iterator
@@ -1350,12 +1376,12 @@ bool Map::removeNodeWithEvent(v3s16 p)
        return succeeded;
 }
 
-bool Map::dayNightDiffed(v3s16 blockpos)
+bool Map::getDayNightDiff(v3s16 blockpos)
 {
        try{
                v3s16 p = blockpos + v3s16(0,0,0);
                MapBlock *b = getBlockNoCreate(p);
-               if(b->dayNightDiffed())
+               if(b->getDayNightDiff())
                        return true;
        }
        catch(InvalidPositionException &e){}
@@ -1363,21 +1389,21 @@ bool Map::dayNightDiffed(v3s16 blockpos)
        try{
                v3s16 p = blockpos + v3s16(-1,0,0);
                MapBlock *b = getBlockNoCreate(p);
-               if(b->dayNightDiffed())
+               if(b->getDayNightDiff())
                        return true;
        }
        catch(InvalidPositionException &e){}
        try{
                v3s16 p = blockpos + v3s16(0,-1,0);
                MapBlock *b = getBlockNoCreate(p);
-               if(b->dayNightDiffed())
+               if(b->getDayNightDiff())
                        return true;
        }
        catch(InvalidPositionException &e){}
        try{
                v3s16 p = blockpos + v3s16(0,0,-1);
                MapBlock *b = getBlockNoCreate(p);
-               if(b->dayNightDiffed())
+               if(b->getDayNightDiff())
                        return true;
        }
        catch(InvalidPositionException &e){}
@@ -1385,21 +1411,21 @@ bool Map::dayNightDiffed(v3s16 blockpos)
        try{
                v3s16 p = blockpos + v3s16(1,0,0);
                MapBlock *b = getBlockNoCreate(p);
-               if(b->dayNightDiffed())
+               if(b->getDayNightDiff())
                        return true;
        }
        catch(InvalidPositionException &e){}
        try{
                v3s16 p = blockpos + v3s16(0,1,0);
                MapBlock *b = getBlockNoCreate(p);
-               if(b->dayNightDiffed())
+               if(b->getDayNightDiff())
                        return true;
        }
        catch(InvalidPositionException &e){}
        try{
                v3s16 p = blockpos + v3s16(0,0,1);
                MapBlock *b = getBlockNoCreate(p);
-               if(b->dayNightDiffed())
+               if(b->getDayNightDiff())
                        return true;
        }
        catch(InvalidPositionException &e){}
@@ -1415,9 +1441,13 @@ void Map::timerUpdate(float dtime, float unload_timeout,
 {
        bool save_before_unloading = (mapType() == MAPTYPE_SERVER);
        
+       // Profile modified reasons
+       Profiler modprofiler;
+       
        core::list<v2s16> sector_deletion_queue;
        u32 deleted_blocks_count = 0;
        u32 saved_blocks_count = 0;
+       u32 block_count_all = 0;
 
        core::map<v2s16, MapSector*>::Iterator si;
 
@@ -1438,8 +1468,8 @@ void Map::timerUpdate(float dtime, float unload_timeout,
                        MapBlock *block = (*i);
                        
                        block->incrementUsageTimer(dtime);
-                       
-                       if(block->getUsageTimer() > unload_timeout)
+
+                       if(block->refGet() == 0 && block->getUsageTimer() > unload_timeout)
                        {
                                v3s16 p = block->getPos();
 
@@ -1447,6 +1477,7 @@ void Map::timerUpdate(float dtime, float unload_timeout,
                                if(block->getModified() != MOD_STATE_CLEAN
                                                && save_before_unloading)
                                {
+                                       modprofiler.add(block->getModifiedReason(), 1);
                                        saveBlock(block);
                                        saved_blocks_count++;
                                }
@@ -1462,6 +1493,7 @@ void Map::timerUpdate(float dtime, float unload_timeout,
                        else
                        {
                                all_blocks_deleted = false;
+                               block_count_all++;
                        }
                }
 
@@ -1482,7 +1514,13 @@ void Map::timerUpdate(float dtime, float unload_timeout,
                                <<" blocks from memory";
                if(save_before_unloading)
                        infostream<<", of which "<<saved_blocks_count<<" were written";
+               infostream<<", "<<block_count_all<<" blocks in memory";
                infostream<<"."<<std::endl;
+               if(saved_blocks_count != 0){
+                       PrintInfo(infostream); // ServerMap/ClientMap:
+                       infostream<<"Blocks modified by: "<<std::endl;
+                       modprofiler.print(infostream);
+               }
        }
 }
 
@@ -1578,6 +1616,8 @@ struct NodeNeighbor {
 
 void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 {
+       INodeDefManager *nodemgr = m_gamedef->ndef();
+
        DSTACK(__FUNCTION_NAME);
        //TimeTaker timer("transformLiquids()");
 
@@ -1596,7 +1636,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
        while(m_transforming_liquid.size() != 0)
        {
                // This should be done here so that it is done when continue is used
-               if(loopcount >= initial_size * 3)
+               if(loopcount >= initial_size || loopcount >= 10000)
                        break;
                loopcount++;
 
@@ -1612,11 +1652,11 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
                 */
                s8 liquid_level = -1;
                u8 liquid_kind = CONTENT_IGNORE;
-               LiquidType liquid_type = content_features(n0.getContent()).liquid_type;
+               LiquidType liquid_type = nodemgr->get(n0).liquid_type;
                switch (liquid_type) {
                        case LIQUID_SOURCE:
                                liquid_level = LIQUID_LEVEL_SOURCE;
-                               liquid_kind = content_features(n0.getContent()).liquid_alternative_flowing;
+                               liquid_kind = nodemgr->getId(nodemgr->get(n0).liquid_alternative_flowing);
                                break;
                        case LIQUID_FLOWING:
                                liquid_level = (n0.param2 & LIQUID_LEVEL_MASK);
@@ -1656,7 +1696,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
                        }
                        v3s16 npos = p0 + dirs[i];
                        NodeNeighbor nb = {getNodeNoEx(npos), nt, npos};
-                       switch (content_features(nb.n.getContent()).liquid_type) {
+                       switch (nodemgr->get(nb.n.getContent()).liquid_type) {
                                case LIQUID_NONE:
                                        if (nb.n.getContent() == CONTENT_AIR) {
                                                airs[num_airs++] = nb;
@@ -1676,18 +1716,20 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
                                case LIQUID_SOURCE:
                                        // if this node is not (yet) of a liquid type, choose the first liquid type we encounter 
                                        if (liquid_kind == CONTENT_AIR)
-                                               liquid_kind = content_features(nb.n.getContent()).liquid_alternative_flowing;
-                                       if (content_features(nb.n.getContent()).liquid_alternative_flowing !=liquid_kind) {
+                                               liquid_kind = nodemgr->getId(nodemgr->get(nb.n).liquid_alternative_flowing);
+                                       if (nodemgr->getId(nodemgr->get(nb.n).liquid_alternative_flowing) != liquid_kind) {
                                                neutrals[num_neutrals++] = nb;
                                        } else {
-                                               sources[num_sources++] = nb;
+                                               // Do not count bottom source, it will screw things up
+                                               if(dirs[i].Y != -1)
+                                                       sources[num_sources++] = nb;
                                        }
                                        break;
                                case LIQUID_FLOWING:
                                        // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
                                        if (liquid_kind == CONTENT_AIR)
-                                               liquid_kind = content_features(nb.n.getContent()).liquid_alternative_flowing;
-                                       if (content_features(nb.n.getContent()).liquid_alternative_flowing != liquid_kind) {
+                                               liquid_kind = nodemgr->getId(nodemgr->get(nb.n).liquid_alternative_flowing);
+                                       if (nodemgr->getId(nodemgr->get(nb.n).liquid_alternative_flowing) != liquid_kind) {
                                                neutrals[num_neutrals++] = nb;
                                        } else {
                                                flows[num_flows++] = nb;
@@ -1708,7 +1750,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
                        // liquid_kind will be set to either the flowing alternative of the node (if it's a liquid)
                        // or the flowing alternative of the first of the surrounding sources (if it's air), so
                        // it's perfectly safe to use liquid_kind here to determine the new node content.
-                       new_node_content = content_features(liquid_kind).liquid_alternative_source;
+                       new_node_content = nodemgr->getId(nodemgr->get(liquid_kind).liquid_alternative_source);
                } else if (num_sources == 1 && sources[0].t != NEIGHBOR_LOWER) {
                        // liquid_kind is set properly, see above
                        new_node_content = liquid_kind;
@@ -1737,7 +1779,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
                                }
                        }
 
-                       u8 viscosity = content_features(liquid_kind).liquid_viscosity;
+                       u8 viscosity = nodemgr->get(liquid_kind).liquid_viscosity;
                        if (viscosity > 1 && max_node_level != liquid_level) {
                                // amount to gain, limited by viscosity
                                // must be at least 1 in absolute value
@@ -1763,7 +1805,7 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
                /*
                        check if anything has changed. if not, just continue with the next node.
                 */
-               if (new_node_content == n0.getContent() && (content_features(n0.getContent()).liquid_type != LIQUID_FLOWING ||
+               if (new_node_content == n0.getContent() && (nodemgr->get(n0.getContent()).liquid_type != LIQUID_FLOWING ||
                                                                                 ((n0.param2 & LIQUID_LEVEL_MASK) == (u8)new_node_level &&
                                                                                 ((n0.param2 & LIQUID_FLOW_DOWN_MASK) == LIQUID_FLOW_DOWN_MASK)
                                                                                 == flowing_down)))
@@ -1773,8 +1815,8 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
                /*
                        update the current node
                 */
-               bool flow_down_enabled = (flowing_down && ((n0.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK));
-               if (content_features(new_node_content).liquid_type == LIQUID_FLOWING) {
+               //bool flow_down_enabled = (flowing_down && ((n0.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK));
+               if (nodemgr->get(new_node_content).liquid_type == LIQUID_FLOWING) {
                        // set level to last 3 bits, flowing down bit to 4th bit
                        n0.param2 = (flowing_down ? LIQUID_FLOW_DOWN_MASK : 0x00) | (new_node_level & LIQUID_LEVEL_MASK);
                } else {
@@ -1782,20 +1824,43 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
                        n0.param2 = ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
                }
                n0.setContent(new_node_content);
-               setNode(p0, n0);
+               
+               // Find out whether there is a suspect for this action
+               std::string suspect;
+               if(m_gamedef->rollback()){
+                       suspect = m_gamedef->rollback()->getSuspect(p0, 83, 1);
+               }
+
+               if(!suspect.empty()){
+                       // Blame suspect
+                       RollbackScopeActor rollback_scope(m_gamedef->rollback(), suspect, true);
+                       // Get old node for rollback
+                       RollbackNode rollback_oldnode(this, p0, m_gamedef);
+                       // Set node
+                       setNode(p0, n0);
+                       // Report
+                       RollbackNode rollback_newnode(this, p0, m_gamedef);
+                       RollbackAction action;
+                       action.setSetNode(p0, rollback_oldnode, rollback_newnode);
+                       m_gamedef->rollback()->reportAction(action);
+               } else {
+                       // Set node
+                       setNode(p0, n0);
+               }
+
                v3s16 blockpos = getNodeBlockPos(p0);
                MapBlock *block = getBlockNoCreateNoEx(blockpos);
                if(block != NULL) {
                        modified_blocks.insert(blockpos, block);
                        // If node emits light, MapBlock requires lighting update
-                       if(content_features(n0).light_source != 0)
+                       if(nodemgr->get(n0).light_source != 0)
                                lighting_modified_blocks[block->getPos()] = block;
                }
 
                /*
                        enqueue neighbors for update if neccessary
                 */
-               switch (content_features(n0.getContent()).liquid_type) {
+               switch (nodemgr->get(n0.getContent()).liquid_type) {
                        case LIQUID_SOURCE:
                        case LIQUID_FLOWING:
                                // make sure source flows into all neighboring nodes
@@ -1872,48 +1937,72 @@ void Map::removeNodeMetadata(v3s16 p)
        block->m_node_metadata.remove(p_rel);
 }
 
-void Map::nodeMetadataStep(float dtime,
-               core::map<v3s16, MapBlock*> &changed_blocks)
+NodeTimer Map::getNodeTimer(v3s16 p)
 {
-       /*
-               NOTE:
-               Currently there is no way to ensure that all the necessary
-               blocks are loaded when this is run. (They might get unloaded)
-               NOTE: ^- Actually, that might not be so. In a quick test it
-               reloaded a block with a furnace when I walked back to it from
-               a distance.
-       */
-       core::map<v2s16, MapSector*>::Iterator si;
-       si = m_sectors.getIterator();
-       for(; si.atEnd() == false; si++)
+       v3s16 blockpos = getNodeBlockPos(p);
+       v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
+       MapBlock *block = getBlockNoCreateNoEx(blockpos);
+       if(!block){
+               infostream<<"Map::getNodeTimer(): Need to emerge "
+                               <<PP(blockpos)<<std::endl;
+               block = emergeBlock(blockpos, false);
+       }
+       if(!block)
        {
-               MapSector *sector = si.getNode()->getValue();
-               core::list< MapBlock * > sectorblocks;
-               sector->getBlocks(sectorblocks);
-               core::list< MapBlock * >::Iterator i;
-               for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
-               {
-                       MapBlock *block = *i;
-                       bool changed = block->m_node_metadata.step(dtime);
-                       if(changed)
-                               changed_blocks[block->getPos()] = block;
-               }
+               infostream<<"WARNING: Map::getNodeTimer(): Block not found"
+                               <<std::endl;
+               return NodeTimer();
+       }
+       NodeTimer t = block->m_node_timers.get(p_rel);
+       return t;
+}
+
+void Map::setNodeTimer(v3s16 p, NodeTimer t)
+{
+       v3s16 blockpos = getNodeBlockPos(p);
+       v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
+       MapBlock *block = getBlockNoCreateNoEx(blockpos);
+       if(!block){
+               infostream<<"Map::setNodeTimer(): Need to emerge "
+                               <<PP(blockpos)<<std::endl;
+               block = emergeBlock(blockpos, false);
+       }
+       if(!block)
+       {
+               infostream<<"WARNING: Map::setNodeTimer(): Block not found"
+                               <<std::endl;
+               return;
+       }
+       block->m_node_timers.set(p_rel, t);
+}
+
+void Map::removeNodeTimer(v3s16 p)
+{
+       v3s16 blockpos = getNodeBlockPos(p);
+       v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
+       MapBlock *block = getBlockNoCreateNoEx(blockpos);
+       if(block == NULL)
+       {
+               infostream<<"WARNING: Map::removeNodeTimer(): Block not found"
+                               <<std::endl;
+               return;
        }
+       block->m_node_timers.remove(p_rel);
 }
 
 /*
        ServerMap
 */
 
-ServerMap::ServerMap(std::string savedir):
-       Map(dout_server),
+ServerMap::ServerMap(std::string savedir, IGameDef *gamedef):
+       Map(dout_server, gamedef),
        m_seed(0),
        m_map_metadata_changed(true),
        m_database(NULL),
        m_database_read(NULL),
        m_database_write(NULL)
 {
-       infostream<<__FUNCTION_NAME<<std::endl;
+       verbosestream<<__FUNCTION_NAME<<std::endl;
 
        //m_chunksize = 8; // Takes a few seconds
 
@@ -1951,7 +2040,7 @@ ServerMap::ServerMap(std::string savedir):
                        // If directory is empty, it is safe to save into it.
                        if(fs::GetDirListing(m_savedir).size() == 0)
                        {
-                               infostream<<"Server: Empty save directory is valid."
+                               infostream<<"ServerMap: Empty save directory is valid."
                                                <<std::endl;
                                m_map_saving_enabled = true;
                        }
@@ -1968,25 +2057,10 @@ ServerMap::ServerMap(std::string savedir):
                                        //m_chunksize = 0;
                                }
 
-                               /*try{
-                                       // Load chunk metadata
-                                       loadChunkMeta();
-                               }
-                               catch(FileNotGoodException &e){
-                                       infostream<<"WARNING: Could not load chunk metadata."
-                                                       <<" Disabling chunk-based generator."
-                                                       <<std::endl;
-                                       m_chunksize = 0;
-                               }*/
-
-                               /*infostream<<"Server: Successfully loaded chunk "
-                                               "metadata and sector (0,0) from "<<savedir<<
-                                               ", assuming valid save directory."
-                                               <<std::endl;*/
-
-                               infostream<<"Server: Successfully loaded map "
-                                               <<"and chunk metadata from "<<savedir
+                               infostream<<"ServerMap: Successfully loaded map "
+                                               <<"metadata from "<<savedir
                                                <<", assuming valid save directory."
+                                               <<" seed="<<m_seed<<"."
                                                <<std::endl;
 
                                m_map_saving_enabled = true;
@@ -2001,7 +2075,7 @@ ServerMap::ServerMap(std::string savedir):
        }
        catch(std::exception &e)
        {
-               infostream<<"WARNING: Server: Failed to load map from "<<savedir
+               infostream<<"WARNING: ServerMap: Failed to load map from "<<savedir
                                <<", exception: "<<e.what()<<std::endl;
                infostream<<"Please remove the map or fix it."<<std::endl;
                infostream<<"WARNING: Map saving will be disabled."<<std::endl;
@@ -2013,29 +2087,29 @@ ServerMap::ServerMap(std::string savedir):
        emergeSector(v2s16(0,0));
 
        // Initially write whole map
-       save(false);
+       save(MOD_STATE_CLEAN);
 }
 
 ServerMap::~ServerMap()
 {
-       infostream<<__FUNCTION_NAME<<std::endl;
+       verbosestream<<__FUNCTION_NAME<<std::endl;
 
        try
        {
                if(m_map_saving_enabled)
                {
                        // Save only changed parts
-                       save(true);
-                       infostream<<"Server: saved map to "<<m_savedir<<std::endl;
+                       save(MOD_STATE_WRITE_AT_UNLOAD);
+                       infostream<<"ServerMap: Saved map to "<<m_savedir<<std::endl;
                }
                else
                {
-                       infostream<<"Server: map not saved"<<std::endl;
+                       infostream<<"ServerMap: Map not saved"<<std::endl;
                }
        }
        catch(std::exception &e)
        {
-               infostream<<"Server: Failed to save map to "<<m_savedir
+               infostream<<"ServerMap: Failed to save map to "<<m_savedir
                                <<", exception: "<<e.what()<<std::endl;
        }
 
@@ -2066,12 +2140,29 @@ void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
 {
        bool enable_mapgen_debug_info = g_settings->getBool("enable_mapgen_debug_info");
        if(enable_mapgen_debug_info)
-               infostream<<"initBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
-                               <<blockpos.Z<<")"<<std::endl;
+               infostream<<"initBlockMake(): "
+                               <<"("<<blockpos.X<<","<<blockpos.Y<<","<<blockpos.Z<<") - "
+                               <<"("<<blockpos.X<<","<<blockpos.Y<<","<<blockpos.Z<<")"
+                               <<std::endl;
        
+       //s16 chunksize = 3;
+       //v3s16 chunk_offset(-1,-1,-1);
+       //s16 chunksize = 4;
+       //v3s16 chunk_offset(-1,-1,-1);
+       s16 chunksize = 5;
+       v3s16 chunk_offset(-2,-2,-2);
+       v3s16 blockpos_div = getContainerPos(blockpos - chunk_offset, chunksize);
+       v3s16 blockpos_min = blockpos_div * chunksize;
+       v3s16 blockpos_max = blockpos_div * chunksize + v3s16(1,1,1)*(chunksize-1);
+       blockpos_min += chunk_offset;
+       blockpos_max += chunk_offset;
+
+       //v3s16 extra_borders(1,1,1);
+       v3s16 extra_borders(1,1,1);
+
        // Do nothing if not inside limits (+-1 because of neighbors)
-       if(blockpos_over_limit(blockpos - v3s16(1,1,1)) ||
-               blockpos_over_limit(blockpos + v3s16(1,1,1)))
+       if(blockpos_over_limit(blockpos_min - extra_borders) ||
+               blockpos_over_limit(blockpos_max + extra_borders))
        {
                data->no_op = true;
                return;
@@ -2079,7 +2170,10 @@ void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
        
        data->no_op = false;
        data->seed = m_seed;
-       data->blockpos = blockpos;
+       data->blockpos_min = blockpos_min;
+       data->blockpos_max = blockpos_max;
+       data->blockpos_requested = blockpos;
+       data->nodedef = m_gamedef->ndef();
 
        /*
                Create the whole area of this and the neighboring blocks
@@ -2087,17 +2181,20 @@ void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
        {
                //TimeTaker timer("initBlockMake() create area");
                
-               for(s16 x=-1; x<=1; x++)
-               for(s16 z=-1; z<=1; z++)
+               for(s16 x=blockpos_min.X-extra_borders.X;
+                               x<=blockpos_max.X+extra_borders.X; x++)
+               for(s16 z=blockpos_min.Z-extra_borders.Z;
+                               z<=blockpos_max.Z+extra_borders.Z; z++)
                {
-                       v2s16 sectorpos(blockpos.X+x, blockpos.Z+z);
+                       v2s16 sectorpos(x, z);
                        // Sector metadata is loaded from disk if not already loaded.
                        ServerMapSector *sector = createSector(sectorpos);
                        assert(sector);
 
-                       for(s16 y=-1; y<=1; y++)
+                       for(s16 y=blockpos_min.Y-extra_borders.Y;
+                                       y<=blockpos_max.Y+extra_borders.Y; y++)
                        {
-                               v3s16 p(blockpos.X+x, blockpos.Y+y, blockpos.Z+z);
+                               v3s16 p(x,y,z);
                                //MapBlock *block = createBlock(p);
                                // 1) get from memory, 2) load from disk
                                MapBlock *block = emergeBlock(p, false);
@@ -2131,8 +2228,8 @@ void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
        */
        
        // The area that contains this block and it's neighbors
-       v3s16 bigarea_blocks_min = blockpos - v3s16(1,1,1);
-       v3s16 bigarea_blocks_max = blockpos + v3s16(1,1,1);
+       v3s16 bigarea_blocks_min = blockpos_min - extra_borders;
+       v3s16 bigarea_blocks_max = blockpos_max + extra_borders;
        
        data->vmanip = new ManualMapVoxelManipulator(this);
        //data->vmanip->setMap(this);
@@ -2149,9 +2246,14 @@ void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
 MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
                core::map<v3s16, MapBlock*> &changed_blocks)
 {
-       v3s16 blockpos = data->blockpos;
-       /*infostream<<"finishBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
-                       <<blockpos.Z<<")"<<std::endl;*/
+       v3s16 blockpos_min = data->blockpos_min;
+       v3s16 blockpos_max = data->blockpos_max;
+       v3s16 blockpos_requested = data->blockpos_requested;
+       /*infostream<<"finishBlockMake(): ("<<blockpos_requested.X<<","
+                       <<blockpos_requested.Y<<","
+                       <<blockpos_requested.Z<<")"<<std::endl;*/
+
+       v3s16 extra_borders(1,1,1);
 
        if(data->no_op)
        {
@@ -2163,7 +2265,20 @@ MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
 
        /*infostream<<"Resulting vmanip:"<<std::endl;
        data->vmanip.print(infostream);*/
-       
+
+       // Make sure affected blocks are loaded
+       for(s16 x=blockpos_min.X-extra_borders.X;
+                       x<=blockpos_max.X+extra_borders.X; x++)
+       for(s16 z=blockpos_min.Z-extra_borders.Z;
+                       z<=blockpos_max.Z+extra_borders.Z; z++)
+       for(s16 y=blockpos_min.Y-extra_borders.Y;
+                       y<=blockpos_max.Y+extra_borders.Y; y++)
+       {
+               v3s16 p(x, y, z);
+               // Load from disk if not already in memory
+               emergeBlock(p, false);
+       }
+
        /*
                Blit generated stuff to map
                NOTE: blitBackAll adds nearly everything to changed_blocks
@@ -2186,107 +2301,59 @@ MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
                v3s16 p = data->transforming_liquid.pop_front();
                m_transforming_liquid.push_back(p);
        }
-       
-       /*
-               Get central block
-       */
-       MapBlock *block = getBlockNoCreateNoEx(data->blockpos);
-       assert(block);
-
-       /*
-               Set is_underground flag for lighting with sunlight.
-
-               Refer to map generator heuristics.
-
-               NOTE: This is done in initChunkMake
-       */
-       //block->setIsUnderground(mapgen::block_is_underground(data->seed, blockpos));
-
-
-       /*
-               Add sunlight to central block.
-               This makes in-dark-spawning monsters to not flood the whole thing.
-               Do not spread the light, though.
-       */
-       /*core::map<v3s16, bool> light_sources;
-       bool black_air_left = false;
-       block->propagateSunlight(light_sources, true, &black_air_left);*/
 
        /*
-               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, 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
+               Do stuff in central blocks
        */
 
        /*
                Update lighting
-               NOTE: This takes ~60ms, TODO: Investigate why
        */
        {
+#if 0
                TimeTaker t("finishBlockMake lighting update");
 
                core::map<v3s16, MapBlock*> lighting_update_blocks;
-#if 1
-               // Center block
-               lighting_update_blocks.insert(block->getPos(), block);
-
-               /*{
-                       s16 x = 0;
-                       s16 z = 0;
-                       v3s16 p = block->getPos()+v3s16(x,1,z);
-                       lighting_update_blocks[p] = getBlockNoCreateNoEx(p);
-               }*/
-#endif
-#if 0
-               // All modified blocks
-               // NOTE: Should this be done? If this is not done, then the lighting
-               // of the others will be updated in a different place, one by one, i
-               // think... or they might not? Well, at least they are left marked as
-               // "lighting expired"; it seems that is not handled at all anywhere,
-               // so enabling this will slow it down A LOT because otherwise it
-               // would not do this at all. This causes the black trees.
-               for(core::map<v3s16, MapBlock*>::Iterator
-                               i = changed_blocks.getIterator();
-                               i.atEnd() == false; i++)
-               {
-                       lighting_update_blocks.insert(i.getNode()->getKey(),
-                                       i.getNode()->getValue());
+               
+               // Center blocks
+               for(s16 x=blockpos_min.X-extra_borders.X;
+                               x<=blockpos_max.X+extra_borders.X; x++)
+               for(s16 z=blockpos_min.Z-extra_borders.Z;
+                               z<=blockpos_max.Z+extra_borders.Z; z++)
+               for(s16 y=blockpos_min.Y-extra_borders.Y;
+                               y<=blockpos_max.Y+extra_borders.Y; y++)
+               {
+                       v3s16 p(x, y, z);
+                       MapBlock *block = getBlockNoCreateNoEx(p);
+                       assert(block);
+                       lighting_update_blocks.insert(block->getPos(), block);
                }
-               /*// Also force-add all the upmost blocks for proper sunlight
-               for(s16 x=-1; x<=1; x++)
-               for(s16 z=-1; z<=1; z++)
-               {
-                       v3s16 p = block->getPos()+v3s16(x,1,z);
-                       lighting_update_blocks[p] = getBlockNoCreateNoEx(p);
-               }*/
-#endif
+
                updateLighting(lighting_update_blocks, changed_blocks);
+#endif
                
                /*
                        Set lighting to non-expired state in all of them.
                        This is cheating, but it is not fast enough if all of them
                        would actually be updated.
                */
-               for(s16 x=-1; x<=1; x++)
-               for(s16 y=-1; y<=1; y++)
-               for(s16 z=-1; z<=1; z++)
-               {
-                       v3s16 p = block->getPos()+v3s16(x,y,z);
+               for(s16 x=blockpos_min.X-extra_borders.X;
+                               x<=blockpos_max.X+extra_borders.X; x++)
+               for(s16 z=blockpos_min.Z-extra_borders.Z;
+                               z<=blockpos_max.Z+extra_borders.Z; z++)
+               for(s16 y=blockpos_min.Y-extra_borders.Y;
+                               y<=blockpos_max.Y+extra_borders.Y; y++)
+               {
+                       v3s16 p(x, y, z);
                        getBlockNoCreateNoEx(p)->setLightingExpired(false);
                }
 
+#if 0
                if(enable_mapgen_debug_info == false)
                        t.stop(true); // Hide output
+#endif
        }
 
-       /*
-               Add random objects to block
-       */
-       mapgen::add_random_objects(block);
-
        /*
                Go through changed blocks
        */
@@ -2298,37 +2365,50 @@ MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
                /*
                        Update day/night difference cache of the MapBlocks
                */
-               block->updateDayNightDiff();
+               block->expireDayNightDiff();
                /*
                        Set block as modified
                */
-               block->raiseModified(MOD_STATE_WRITE_NEEDED);
+               block->raiseModified(MOD_STATE_WRITE_NEEDED,
+                               "finishBlockMake expireDayNightDiff");
        }
 
        /*
-               Set central block as generated
+               Set central blocks as generated
        */
-       block->setGenerated(true);
+       for(s16 x=blockpos_min.X; x<=blockpos_max.X; x++)
+       for(s16 z=blockpos_min.Z; z<=blockpos_max.Z; z++)
+       for(s16 y=blockpos_min.Y; y<=blockpos_max.Y; y++)
+       {
+               v3s16 p(x, y, z);
+               MapBlock *block = getBlockNoCreateNoEx(p);
+               assert(block);
+               block->setGenerated(true);
+       }
        
        /*
                Save changed parts of map
                NOTE: Will be saved later.
        */
-       //save(true);
+       //save(MOD_STATE_WRITE_AT_UNLOAD);
 
-       /*infostream<<"finishBlockMake() done for ("<<blockpos.X<<","<<blockpos.Y<<","
-                       <<blockpos.Z<<")"<<std::endl;*/
+       /*infostream<<"finishBlockMake() done for ("<<blockpos_requested.X
+                       <<","<<blockpos_requested.Y<<","
+                       <<blockpos_requested.Z<<")"<<std::endl;*/
 #if 0
        if(enable_mapgen_debug_info)
        {
                /*
                        Analyze resulting blocks
                */
-               for(s16 x=-1; x<=1; x++)
-               for(s16 y=-1; y<=1; y++)
-               for(s16 z=-1; z<=1; z++)
-               {
-                       v3s16 p = block->getPos()+v3s16(x,y,z);
+               /*for(s16 x=blockpos_min.X-1; x<=blockpos_max.X+1; x++)
+               for(s16 z=blockpos_min.Z-1; z<=blockpos_max.Z+1; z++)
+               for(s16 y=blockpos_min.Y-1; y<=blockpos_max.Y+1; y++)*/
+               for(s16 x=blockpos_min.X-0; x<=blockpos_max.X+0; x++)
+               for(s16 z=blockpos_min.Z-0; z<=blockpos_max.Z+0; z++)
+               for(s16 y=blockpos_min.Y-0; y<=blockpos_max.Y+0; y++)
+               {
+                       v3s16 p = v3s16(x,y,z);
                        MapBlock *block = getBlockNoCreateNoEx(p);
                        char spos[20];
                        snprintf(spos, 20, "(%2d,%2d,%2d)", x, y, z);
@@ -2338,6 +2418,9 @@ MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
        }
 #endif
 
+       MapBlock *block = getBlockNoCreateNoEx(blockpos_requested);
+       assert(block);
+
        return block;
 }
 
@@ -2387,7 +2470,7 @@ ServerMapSector * ServerMap::createSector(v2s16 p2d)
                Generate blank sector
        */
        
-       sector = new ServerMapSector(this, p2d);
+       sector = new ServerMapSector(this, p2d, m_gamedef);
        
        // Sector position on map in nodes
        v2s16 nodepos2d = p2d * MAP_BLOCKSIZE;
@@ -2500,10 +2583,7 @@ MapBlock * ServerMap::generateBlock(
                        for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
                        {
                                MapNode n;
-                               if(y0%2==0)
-                                       n.setContent(CONTENT_AIR);
-                               else
-                                       n.setContent(CONTENT_STONE);
+                               n.setContent(CONTENT_AIR);
                                block->setNode(v3s16(x0,y0,z0), n);
                        }
                }
@@ -2681,7 +2761,7 @@ void ServerMap::createDatabase() {
        if(e == SQLITE_ABORT)
                throw FileNotGoodException("Could not create database structure");
        else
-               infostream<<"Server: Database structure was created";
+               infostream<<"ServerMap: Database structure was created";
 }
 
 void ServerMap::verifyDatabase() {
@@ -2729,7 +2809,7 @@ void ServerMap::verifyDatabase() {
                        throw FileNotGoodException("Cannot prepare read statement");
                }
                
-               infostream<<"Server: Database opened"<<std::endl;
+               infostream<<"ServerMap: Database opened"<<std::endl;
        }
 }
 
@@ -2825,7 +2905,7 @@ std::string ServerMap::getBlockFilename(v3s16 p)
        return cc;
 }
 
-void ServerMap::save(bool only_changed)
+void ServerMap::save(ModifiedState save_level)
 {
        DSTACK(__FUNCTION_NAME);
        if(m_map_saving_enabled == false)
@@ -2834,27 +2914,32 @@ void ServerMap::save(bool only_changed)
                return;
        }
        
-       if(only_changed == false)
+       if(save_level == MOD_STATE_CLEAN)
                infostream<<"ServerMap: Saving whole map, this can take time."
                                <<std::endl;
        
-       if(only_changed == false || m_map_metadata_changed)
+       if(m_map_metadata_changed || save_level == MOD_STATE_CLEAN)
        {
                saveMapMeta();
        }
 
+       // Profile modified reasons
+       Profiler modprofiler;
+       
        u32 sector_meta_count = 0;
        u32 block_count = 0;
        u32 block_count_all = 0; // Number of blocks in memory
        
-       beginSave();
+       // Don't do anything with sqlite unless something is really saved
+       bool save_started = false;
+
        core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
        for(; i.atEnd() == false; i++)
        {
                ServerMapSector *sector = (ServerMapSector*)i.getNode()->getValue();
                assert(sector->getId() == MAPSECTOR_SERVER);
        
-               if(sector->differs_from_disk || only_changed == false)
+               if(sector->differs_from_disk || save_level == MOD_STATE_CLEAN)
                {
                        saveSectorMeta(sector);
                        sector_meta_count++;
@@ -2863,16 +2948,22 @@ void ServerMap::save(bool only_changed)
                sector->getBlocks(blocks);
                core::list<MapBlock*>::Iterator j;
                
-               //sqlite3_exec(m_database, "BEGIN;", NULL, NULL, NULL);
                for(j=blocks.begin(); j!=blocks.end(); j++)
                {
                        MapBlock *block = *j;
                        
                        block_count_all++;
 
-                       if(block->getModified() >= MOD_STATE_WRITE_NEEDED 
-                                       || only_changed == false)
+                       if(block->getModified() >= save_level)
                        {
+                               // Lazy beginSave()
+                               if(!save_started){
+                                       beginSave();
+                                       save_started = true;
+                               }
+
+                               modprofiler.add(block->getModifiedReason(), 1);
+
                                saveBlock(block);
                                block_count++;
 
@@ -2882,15 +2973,15 @@ void ServerMap::save(bool only_changed)
                                                <<block->getPos().Z<<")"
                                                <<std::endl;*/
                        }
-               //sqlite3_exec(m_database, "COMMIT;", NULL, NULL, NULL);
                }
        }
-       endSave();
+       if(save_started)
+               endSave();
 
        /*
                Only print if something happened or saved whole map
        */
-       if(only_changed == false || sector_meta_count != 0
+       if(save_level == MOD_STATE_CLEAN || sector_meta_count != 0
                        || block_count != 0)
        {
                infostream<<"ServerMap: Written: "
@@ -2898,6 +2989,9 @@ void ServerMap::save(bool only_changed)
                                <<block_count<<" block files"
                                <<", "<<block_count_all<<" blocks in memory."
                                <<std::endl;
+               PrintInfo(infostream); // ServerMap/ClientMap:
+               infostream<<"Blocks modified by: "<<std::endl;
+               modprofiler.print(infostream);
        }
 }
 
@@ -2951,9 +3045,9 @@ void ServerMap::saveMapMeta()
 {
        DSTACK(__FUNCTION_NAME);
        
-       infostream<<"ServerMap::saveMapMeta(): "
+       /*infostream<<"ServerMap::saveMapMeta(): "
                        <<"seed="<<m_seed
-                       <<std::endl;
+                       <<std::endl;*/
 
        createDirs(m_savedir);
        
@@ -2980,8 +3074,8 @@ void ServerMap::loadMapMeta()
 {
        DSTACK(__FUNCTION_NAME);
        
-       infostream<<"ServerMap::loadMapMeta(): Loading map metadata"
-                       <<std::endl;
+       /*infostream<<"ServerMap::loadMapMeta(): Loading map metadata"
+                       <<std::endl;*/
 
        std::string fullpath = m_savedir + DIR_DELIM + "map_meta.txt";
        std::ifstream is(fullpath.c_str(), std::ios_base::binary);
@@ -3009,7 +3103,7 @@ void ServerMap::loadMapMeta()
 
        m_seed = params.getU64("seed");
 
-       infostream<<"ServerMap::loadMapMeta(): "<<"seed="<<m_seed<<std::endl;
+       verbosestream<<"ServerMap::loadMapMeta(): "<<"seed="<<m_seed<<std::endl;
 }
 
 void ServerMap::saveSectorMeta(ServerMapSector *sector)
@@ -3052,7 +3146,7 @@ MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load
                                        <<fullpath<<" doesn't exist but directory does."
                                        <<" Continuing with a sector with no metadata."
                                        <<std::endl;*/
-                       sector = new ServerMapSector(this, p2d);
+                       sector = new ServerMapSector(this, p2d, m_gamedef);
                        m_sectors.insert(p2d, sector);
                }
                else
@@ -3063,7 +3157,7 @@ MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load
        else
        {
                sector = ServerMapSector::deSerialize
-                               (is, this, p2d, m_sectors);
+                               (is, this, p2d, m_sectors, m_gamedef);
                if(save_after_load)
                        saveSectorMeta(sector);
        }
@@ -3243,10 +3337,7 @@ void ServerMap::saveBlock(MapBlock *block)
        o.write((char*)&version, 1);
        
        // Write basic data
-       block->serialize(o, version);
-       
-       // Write extra data stored on disk
-       block->serializeDiskExtra(o, version);
+       block->serialize(o, version, true);
        
        // Write block to database
        
@@ -3308,11 +3399,8 @@ void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSecto
                }
                
                // Read basic data
-               block->deSerialize(is, version);
+               block->deSerialize(is, version, true);
 
-               // Read extra data stored on disk
-               block->deSerializeDiskExtra(is, version);
-               
                // If it's a new block, insert it to the map
                if(created_new)
                        sector->insertBlock(block);
@@ -3378,10 +3466,7 @@ void ServerMap::loadBlock(std::string *blob, v3s16 p3d, MapSector *sector, bool
                }
                
                // Read basic data
-               block->deSerialize(is, version);
-
-               // Read extra data stored on disk
-               block->deSerializeDiskExtra(is, version);
+               block->deSerialize(is, version, true);
                
                // If it's a new block, insert it to the map
                if(created_new)
@@ -3391,10 +3476,10 @@ void ServerMap::loadBlock(std::string *blob, v3s16 p3d, MapSector *sector, bool
                        Save blocks loaded in old format in new format
                */
 
-               if(version < SER_FMT_VER_HIGHEST || save_after_load)
-               {
+               //if(version < SER_FMT_VER_HIGHEST || save_after_load)
+               // Only save if asked to; no need to update version
+               if(save_after_load)
                        saveBlock(block);
-               }
                
                // We just loaded it from, so it's up-to-date.
                block->resetModified();
@@ -3402,14 +3487,20 @@ void ServerMap::loadBlock(std::string *blob, v3s16 p3d, MapSector *sector, bool
        }
        catch(SerializationError &e)
        {
-               infostream<<"WARNING: Invalid block data in database "
-                               <<" (SerializationError). "
-                               <<"what()="<<e.what()
-                               <<std::endl;
-                               //" Ignoring. A new one will be generated.
-               assert(0);
+               errorstream<<"Invalid block data in database"
+                               <<" ("<<p3d.X<<","<<p3d.Y<<","<<p3d.Z<<")"
+                               <<" (SerializationError): "<<e.what()<<std::endl;
+               
+               // TODO: Block should be marked as invalid in memory so that it is
+               // not touched but the game can run
 
-               // TODO: Copy to a backup database.
+               if(g_settings->getBool("ignore_world_load_errors")){
+                       errorstream<<"Ignoring block load error. Duck and cover! "
+                                       <<"(ignore_world_load_errors)"<<std::endl;
+               } else {
+                       throw SerializationError("Invalid block data in database");
+                       //assert(0);
+               }
        }
 }
 
@@ -3481,15 +3572,15 @@ MapBlock* ServerMap::loadBlock(v3s16 blockpos)
                }
                catch(InvalidFilenameException &e)
                {
-                       return false;
+                       return NULL;
                }
                catch(FileNotGoodException &e)
                {
-                       return false;
+                       return NULL;
                }
                catch(std::exception &e)
                {
-                       return false;
+                       return NULL;
                }
        }
        
@@ -3513,667 +3604,6 @@ void ServerMap::PrintInfo(std::ostream &out)
        out<<"ServerMap: ";
 }
 
-#ifndef SERVER
-
-/*
-       ClientMap
-*/
-
-ClientMap::ClientMap(
-               Client *client,
-               MapDrawControl &control,
-               scene::ISceneNode* parent,
-               scene::ISceneManager* mgr,
-               s32 id
-):
-       Map(dout_client),
-       scene::ISceneNode(parent, mgr, id),
-       m_client(client),
-       m_control(control),
-       m_camera_position(0,0,0),
-       m_camera_direction(0,0,1),
-       m_camera_fov(PI)
-{
-       m_camera_mutex.Init();
-       assert(m_camera_mutex.IsInitialized());
-       
-       m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
-                       BS*1000000,BS*1000000,BS*1000000);
-}
-
-ClientMap::~ClientMap()
-{
-       /*JMutexAutoLock lock(mesh_mutex);
-       
-       if(mesh != NULL)
-       {
-               mesh->drop();
-               mesh = NULL;
-       }*/
-}
-
-MapSector * ClientMap::emergeSector(v2s16 p2d)
-{
-       DSTACK(__FUNCTION_NAME);
-       // Check that it doesn't exist already
-       try{
-               return getSectorNoGenerate(p2d);
-       }
-       catch(InvalidPositionException &e)
-       {
-       }
-       
-       // Create a sector
-       ClientMapSector *sector = new ClientMapSector(this, p2d);
-       
-       {
-               //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
-               m_sectors.insert(p2d, sector);
-       }
-       
-       return sector;
-}
-
-#if 0
-void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
-{
-       DSTACK(__FUNCTION_NAME);
-       ClientMapSector *sector = NULL;
-
-       //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
-       
-       core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
-
-       if(n != NULL)
-       {
-               sector = (ClientMapSector*)n->getValue();
-               assert(sector->getId() == MAPSECTOR_CLIENT);
-       }
-       else
-       {
-               sector = new ClientMapSector(this, p2d);
-               {
-                       //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
-                       m_sectors.insert(p2d, sector);
-               }
-       }
-
-       sector->deSerialize(is);
-}
-#endif
-
-void ClientMap::OnRegisterSceneNode()
-{
-       if(IsVisible)
-       {
-               SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
-               SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
-       }
-
-       ISceneNode::OnRegisterSceneNode();
-}
-
-void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
-{
-       //m_dout<<DTIME<<"Rendering map..."<<std::endl;
-       DSTACK(__FUNCTION_NAME);
-
-       bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
-       
-       std::string prefix;
-       if(pass == scene::ESNRP_SOLID)
-               prefix = "CM: solid: ";
-       else
-               prefix = "CM: transparent: ";
-
-       /*
-               This is called two times per frame, reset on the non-transparent one
-       */
-       if(pass == scene::ESNRP_SOLID)
-       {
-               m_last_drawn_sectors.clear();
-       }
-
-       /*
-               Get time for measuring timeout.
-               
-               Measuring time is very useful for long delays when the
-               machine is swapping a lot.
-       */
-       int time1 = time(0);
-
-       //u32 daynight_ratio = m_client->getDayNightRatio();
-
-       m_camera_mutex.Lock();
-       v3f camera_position = m_camera_position;
-       v3f camera_direction = m_camera_direction;
-       f32 camera_fov = m_camera_fov;
-       m_camera_mutex.Unlock();
-
-       /*
-               Get all blocks and draw all visible ones
-       */
-
-       v3s16 cam_pos_nodes(
-                       camera_position.X / BS,
-                       camera_position.Y / BS,
-                       camera_position.Z / BS);
-
-       v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
-
-       v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
-       v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
-
-       // Take a fair amount as we will be dropping more out later
-       // Umm... these additions are a bit strange but they are needed.
-       v3s16 p_blocks_min(
-                       p_nodes_min.X / MAP_BLOCKSIZE - 3,
-                       p_nodes_min.Y / MAP_BLOCKSIZE - 3,
-                       p_nodes_min.Z / MAP_BLOCKSIZE - 3);
-       v3s16 p_blocks_max(
-                       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;
-       u32 meshbuffer_count = 0;
-       
-       // For limiting number of mesh updates per frame
-       u32 mesh_update_count = 0;
-       
-       // Number of blocks in rendering range
-       u32 blocks_in_range = 0;
-       // Number of blocks in rendering range but don't have a mesh
-       u32 blocks_in_range_without_mesh = 0;
-       // Blocks that had mesh that would have been drawn according to
-       // rendering range (if max blocks limit didn't kick in)
-       u32 blocks_would_have_drawn = 0;
-       // Blocks that were drawn and had a mesh
-       u32 blocks_drawn = 0;
-       // Blocks which had a corresponding meshbuffer for this pass
-       u32 blocks_had_pass_meshbuf = 0;
-       // Blocks from which stuff was actually drawn
-       u32 blocks_without_stuff = 0;
-
-       /*
-               Collect a set of blocks for drawing
-       */
-       
-       core::map<v3s16, MapBlock*> drawset;
-
-       {
-       ScopeProfiler sp(g_profiler, prefix+"collecting blocks for drawing", SPT_AVG);
-
-       for(core::map<v2s16, MapSector*>::Iterator
-                       si = m_sectors.getIterator();
-                       si.atEnd() == false; si++)
-       {
-               MapSector *sector = si.getNode()->getValue();
-               v2s16 sp = sector->getPos();
-               
-               if(m_control.range_all == false)
-               {
-                       if(sp.X < p_blocks_min.X
-                       || sp.X > p_blocks_max.X
-                       || sp.Y < p_blocks_min.Z
-                       || sp.Y > p_blocks_max.Z)
-                               continue;
-               }
-
-               core::list< MapBlock * > sectorblocks;
-               sector->getBlocks(sectorblocks);
-               
-               /*
-                       Loop through blocks in sector
-               */
-
-               u32 sector_blocks_drawn = 0;
-               
-               core::list< MapBlock * >::Iterator i;
-               for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
-               {
-                       MapBlock *block = *i;
-
-                       /*
-                               Compare block position to camera position, skip
-                               if not seen on display
-                       */
-                       
-                       float range = 100000 * BS;
-                       if(m_control.range_all == false)
-                               range = m_control.wanted_range * BS;
-
-                       float d = 0.0;
-                       if(isBlockInSight(block->getPos(), camera_position,
-                                       camera_direction, camera_fov,
-                                       range, &d) == false)
-                       {
-                               continue;
-                       }
-
-                       // This is ugly (spherical distance limit?)
-                       /*if(m_control.range_all == false &&
-                                       d - 0.5*BS*MAP_BLOCKSIZE > range)
-                               continue;*/
-                       
-                       // This block is in range. Reset usage timer.
-                       block->resetUsageTimer();
-
-                       blocks_in_range++;
-                       
-#if 1
-                       /*
-                               Update expired mesh (used for day/night change)
-
-                               It doesn't work exactly like it should now with the
-                               tasked mesh update but whatever.
-                       */
-
-                       bool mesh_expired = false;
-                       
-                       {
-                               JMutexAutoLock lock(block->mesh_mutex);
-
-                               mesh_expired = block->getMeshExpired();
-
-                               // Mesh has not been expired and there is no mesh:
-                               // block has no content
-                               if(block->mesh == NULL && mesh_expired == false){
-                                       blocks_in_range_without_mesh++;
-                                       continue;
-                               }
-                       }
-
-                       f32 faraway = BS*50;
-                       //f32 faraway = m_control.wanted_range * BS;
-                       
-                       /*
-                               This has to be done with the mesh_mutex unlocked
-                       */
-                       // Pretty random but this should work somewhat nicely
-                       if(mesh_expired && (
-                                       (mesh_update_count < 3
-                                               && (d < faraway || mesh_update_count < 2)
-                                       )
-                                       || 
-                                       (m_control.range_all && mesh_update_count < 20)
-                               )
-                       )
-                       /*if(mesh_expired && mesh_update_count < 6
-                                       && (d < faraway || mesh_update_count < 3))*/
-                       {
-                               mesh_update_count++;
-
-                               // Mesh has been expired: generate new mesh
-                               //block->updateMesh(daynight_ratio);
-                               m_client->addUpdateMeshTask(block->getPos());
-
-                               mesh_expired = false;
-                       }
-#endif
-
-                       {
-                               JMutexAutoLock lock(block->mesh_mutex);
-
-                               scene::SMesh *mesh = block->mesh;
-                               
-                               if(mesh == NULL){
-                                       blocks_in_range_without_mesh++;
-                                       continue;
-                               }
-                               
-                               blocks_would_have_drawn++;
-                               if(blocks_drawn >= m_control.wanted_max_blocks
-                                               && m_control.range_all == false
-                                               && d > m_control.wanted_min_range * BS)
-                                       continue;
-                       }
-
-                       drawset[block->getPos()] = block;
-                       
-                       sector_blocks_drawn++;
-                       blocks_drawn++;
-
-               } // foreach sectorblocks
-
-               if(sector_blocks_drawn != 0)
-                       m_last_drawn_sectors[sp] = true;
-       }
-       } // ScopeProfiler
-       
-       /*
-               Draw the selected MapBlocks
-       */
-
-       {
-       ScopeProfiler sp(g_profiler, prefix+"drawing blocks", SPT_AVG);
-
-       int timecheck_counter = 0;
-       for(core::map<v3s16, MapBlock*>::Iterator
-                       i = drawset.getIterator();
-                       i.atEnd() == false; i++)
-       {
-               {
-                       timecheck_counter++;
-                       if(timecheck_counter > 50)
-                       {
-                               timecheck_counter = 0;
-                               int time2 = time(0);
-                               if(time2 > time1 + 4)
-                               {
-                                       infostream<<"ClientMap::renderMap(): "
-                                               "Rendering takes ages, returning."
-                                               <<std::endl;
-                                       return;
-                               }
-                       }
-               }
-               
-               MapBlock *block = i.getNode()->getValue();
-
-               /*
-                       Draw the faces of the block
-               */
-               {
-                       JMutexAutoLock lock(block->mesh_mutex);
-
-                       scene::SMesh *mesh = block->mesh;
-                       assert(mesh);
-                       
-                       u32 c = mesh->getMeshBufferCount();
-                       bool stuff_actually_drawn = false;
-                       for(u32 i=0; i<c; i++)
-                       {
-                               scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
-                               const video::SMaterial& material = buf->getMaterial();
-                               video::IMaterialRenderer* rnd =
-                                               driver->getMaterialRenderer(material.MaterialType);
-                               bool transparent = (rnd && rnd->isTransparent());
-                               // Render transparent on transparent pass and likewise.
-                               if(transparent == is_transparent_pass)
-                               {
-                                       if(buf->getVertexCount() == 0)
-                                               errorstream<<"Block ["<<analyze_block(block)
-                                                               <<"] contains an empty meshbuf"<<std::endl;
-                                       /*
-                                               This *shouldn't* hurt too much because Irrlicht
-                                               doesn't change opengl textures if the old
-                                               material has the same texture.
-                                       */
-                                       driver->setMaterial(buf->getMaterial());
-                                       driver->drawMeshBuffer(buf);
-                                       vertex_count += buf->getVertexCount();
-                                       meshbuffer_count++;
-                                       stuff_actually_drawn = true;
-                               }
-                       }
-                       if(stuff_actually_drawn)
-                               blocks_had_pass_meshbuf++;
-                       else
-                               blocks_without_stuff++;
-               }
-       }
-       } // ScopeProfiler
-       
-       // Log only on solid pass because values are the same
-       if(pass == scene::ESNRP_SOLID){
-               g_profiler->avg("CM: blocks in range", blocks_in_range);
-               if(blocks_in_range != 0)
-                       g_profiler->avg("CM: blocks in range without mesh (frac)",
-                                       (float)blocks_in_range_without_mesh/blocks_in_range);
-               g_profiler->avg("CM: blocks drawn", blocks_drawn);
-       }
-       
-       g_profiler->avg(prefix+"vertices drawn", vertex_count);
-       if(blocks_had_pass_meshbuf != 0)
-               g_profiler->avg(prefix+"meshbuffers per block",
-                               (float)meshbuffer_count / (float)blocks_had_pass_meshbuf);
-       if(blocks_drawn != 0)
-               g_profiler->avg(prefix+"empty blocks (frac)",
-                               (float)blocks_without_stuff / blocks_drawn);
-
-       m_control.blocks_drawn = blocks_drawn;
-       m_control.blocks_would_have_drawn = blocks_would_have_drawn;
-
-       /*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
-                       <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
-}
-
-void ClientMap::renderPostFx()
-{
-       // Sadly ISceneManager has no "post effects" render pass, in that case we
-       // could just register for that and handle it in renderMap().
-
-       m_camera_mutex.Lock();
-       v3f camera_position = m_camera_position;
-       m_camera_mutex.Unlock();
-
-       MapNode n = getNodeNoEx(floatToInt(camera_position, BS));
-
-       // - If the player is in a solid node, make everything black.
-       // - If the player is in liquid, draw a semi-transparent overlay.
-       ContentFeatures& features = content_features(n);
-       video::SColor post_effect_color = features.post_effect_color;
-       if(features.solidness == 2 && g_settings->getBool("free_move") == false)
-       {
-               post_effect_color = video::SColor(255, 0, 0, 0);
-       }
-       if (post_effect_color.getAlpha() != 0)
-       {
-               // Draw a full-screen rectangle
-               video::IVideoDriver* driver = SceneManager->getVideoDriver();
-               v2u32 ss = driver->getScreenSize();
-               core::rect<s32> rect(0,0, ss.X, ss.Y);
-               driver->draw2DRectangle(post_effect_color, rect);
-       }
-}
-
-bool ClientMap::setTempMod(v3s16 p, NodeMod mod,
-               core::map<v3s16, MapBlock*> *affected_blocks)
-{
-       bool changed = false;
-       /*
-               Add it to all blocks touching it
-       */
-       v3s16 dirs[7] = {
-               v3s16(0,0,0), // this
-               v3s16(0,0,1), // back
-               v3s16(0,1,0), // top
-               v3s16(1,0,0), // right
-               v3s16(0,0,-1), // front
-               v3s16(0,-1,0), // bottom
-               v3s16(-1,0,0), // left
-       };
-       for(u16 i=0; i<7; i++)
-       {
-               v3s16 p2 = p + dirs[i];
-               // Block position of neighbor (or requested) node
-               v3s16 blockpos = getNodeBlockPos(p2);
-               MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
-               if(blockref == NULL)
-                       continue;
-               // Relative position of requested node
-               v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
-               if(blockref->setTempMod(relpos, mod))
-               {
-                       changed = true;
-               }
-       }
-       if(changed && affected_blocks!=NULL)
-       {
-               for(u16 i=0; i<7; i++)
-               {
-                       v3s16 p2 = p + dirs[i];
-                       // Block position of neighbor (or requested) node
-                       v3s16 blockpos = getNodeBlockPos(p2);
-                       MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
-                       if(blockref == NULL)
-                               continue;
-                       affected_blocks->insert(blockpos, blockref);
-               }
-       }
-       return changed;
-}
-
-bool ClientMap::clearTempMod(v3s16 p,
-               core::map<v3s16, MapBlock*> *affected_blocks)
-{
-       bool changed = false;
-       v3s16 dirs[7] = {
-               v3s16(0,0,0), // this
-               v3s16(0,0,1), // back
-               v3s16(0,1,0), // top
-               v3s16(1,0,0), // right
-               v3s16(0,0,-1), // front
-               v3s16(0,-1,0), // bottom
-               v3s16(-1,0,0), // left
-       };
-       for(u16 i=0; i<7; i++)
-       {
-               v3s16 p2 = p + dirs[i];
-               // Block position of neighbor (or requested) node
-               v3s16 blockpos = getNodeBlockPos(p2);
-               MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
-               if(blockref == NULL)
-                       continue;
-               // Relative position of requested node
-               v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
-               if(blockref->clearTempMod(relpos))
-               {
-                       changed = true;
-               }
-       }
-       if(changed && affected_blocks!=NULL)
-       {
-               for(u16 i=0; i<7; i++)
-               {
-                       v3s16 p2 = p + dirs[i];
-                       // Block position of neighbor (or requested) node
-                       v3s16 blockpos = getNodeBlockPos(p2);
-                       MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
-                       if(blockref == NULL)
-                               continue;
-                       affected_blocks->insert(blockpos, blockref);
-               }
-       }
-       return changed;
-}
-
-void ClientMap::expireMeshes(bool only_daynight_diffed)
-{
-       TimeTaker timer("expireMeshes()");
-
-       core::map<v2s16, MapSector*>::Iterator si;
-       si = m_sectors.getIterator();
-       for(; si.atEnd() == false; si++)
-       {
-               MapSector *sector = si.getNode()->getValue();
-
-               core::list< MapBlock * > sectorblocks;
-               sector->getBlocks(sectorblocks);
-               
-               core::list< MapBlock * >::Iterator i;
-               for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
-               {
-                       MapBlock *block = *i;
-
-                       if(only_daynight_diffed && dayNightDiffed(block->getPos()) == false)
-                       {
-                               continue;
-                       }
-                       
-                       {
-                               JMutexAutoLock lock(block->mesh_mutex);
-                               if(block->mesh != NULL)
-                               {
-                                       /*block->mesh->drop();
-                                       block->mesh = NULL;*/
-                                       block->setMeshExpired(true);
-                               }
-                       }
-               }
-       }
-}
-
-void ClientMap::updateMeshes(v3s16 blockpos, u32 daynight_ratio)
-{
-       assert(mapType() == MAPTYPE_CLIENT);
-
-       try{
-               v3s16 p = blockpos + v3s16(0,0,0);
-               MapBlock *b = getBlockNoCreate(p);
-               b->updateMesh(daynight_ratio);
-               //b->setMeshExpired(true);
-       }
-       catch(InvalidPositionException &e){}
-       // Leading edge
-       try{
-               v3s16 p = blockpos + v3s16(-1,0,0);
-               MapBlock *b = getBlockNoCreate(p);
-               b->updateMesh(daynight_ratio);
-               //b->setMeshExpired(true);
-       }
-       catch(InvalidPositionException &e){}
-       try{
-               v3s16 p = blockpos + v3s16(0,-1,0);
-               MapBlock *b = getBlockNoCreate(p);
-               b->updateMesh(daynight_ratio);
-               //b->setMeshExpired(true);
-       }
-       catch(InvalidPositionException &e){}
-       try{
-               v3s16 p = blockpos + v3s16(0,0,-1);
-               MapBlock *b = getBlockNoCreate(p);
-               b->updateMesh(daynight_ratio);
-               //b->setMeshExpired(true);
-       }
-       catch(InvalidPositionException &e){}
-}
-
-#if 0
-/*
-       Update mesh of block in which the node is, and if the node is at the
-       leading edge, update the appropriate leading blocks too.
-*/
-void ClientMap::updateNodeMeshes(v3s16 nodepos, u32 daynight_ratio)
-{
-       v3s16 dirs[4] = {
-               v3s16(0,0,0),
-               v3s16(-1,0,0),
-               v3s16(0,-1,0),
-               v3s16(0,0,-1),
-       };
-       v3s16 blockposes[4];
-       for(u32 i=0; i<4; i++)
-       {
-               v3s16 np = nodepos + dirs[i];
-               blockposes[i] = getNodeBlockPos(np);
-               // Don't update mesh of block if it has been done already
-               bool already_updated = false;
-               for(u32 j=0; j<i; j++)
-               {
-                       if(blockposes[j] == blockposes[i])
-                       {
-                               already_updated = true;
-                               break;
-                       }
-               }
-               if(already_updated)
-                       continue;
-               // Update mesh
-               MapBlock *b = getBlockNoCreate(blockposes[i]);
-               b->updateMesh(daynight_ratio);
-       }
-}
-#endif
-
-void ClientMap::PrintInfo(std::ostream &out)
-{
-       out<<"ClientMap: ";
-}
-
-#endif // !SERVER
-
 /*
        MapVoxelManipulator
 */