]> git.lizzy.rs Git - dragonfireclient.git/blobdiff - src/environment.cpp
modified iron amount a bit
[dragonfireclient.git] / src / environment.cpp
index ecf853b7c6a72703e3cfe236fb897e903e2b9616..8f8628305b1af90e453c2aa3def8fbe626172300 100644 (file)
@@ -1,6 +1,6 @@
 /*
 Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+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
@@ -19,12 +19,14 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "environment.h"
 #include "filesys.h"
+#include "porting.h"
+#include "collision.h"
+#include "content_mapnode.h"
 
-Environment::Environment(Map *map, std::ostream &dout):
-               m_dout(dout)
+
+Environment::Environment():
+       m_time_of_day(9000)
 {
-       m_map = map;
-       m_daynight_ratio = 0.2;
 }
 
 Environment::~Environment()
@@ -35,178 +37,16 @@ Environment::~Environment()
        {
                delete (*i);
        }
-       
-       // The map is removed by the SceneManager
-       m_map->drop();
-       //delete m_map;
-}
-
-void Environment::step(float dtime)
-{
-       DSTACK(__FUNCTION_NAME);
-       /*
-               Run Map's timers
-       */
-       //TimeTaker maptimerupdatetimer("m_map->timerUpdate()", g_device);
-       // 0ms
-       m_map->timerUpdate(dtime);
-       //maptimerupdatetimer.stop();
-
-       /*
-               Get the highest speed some player is going
-       */
-       //TimeTaker playerspeed("playerspeed", g_device);
-       // 0ms
-       f32 maximum_player_speed = 0.001; // just some small value
-       for(core::list<Player*>::Iterator i = m_players.begin();
-                       i != m_players.end(); i++)
-       {
-               f32 speed = (*i)->getSpeed().getLength();
-               if(speed > maximum_player_speed)
-                       maximum_player_speed = speed;
-       }
-       //playerspeed.stop();
-       
-       // Maximum time increment (for collision detection etc)
-       // Allow 0.1 blocks per increment
-       // time = distance / speed
-       f32 dtime_max_increment = 0.1*BS / maximum_player_speed;
-       // Maximum time increment is 10ms or lower
-       if(dtime_max_increment > 0.01)
-               dtime_max_increment = 0.01;
-       
-       //TimeTaker playerupdate("playerupdate", g_device);
-       
-       /*
-               Stuff that has a maximum time increment
-       */
-       // Don't allow overly huge dtime
-       if(dtime > 0.5)
-               dtime = 0.5;
-
-       u32 loopcount = 0;
-       do
-       {
-               loopcount++;
-
-               f32 dtime_part;
-               if(dtime > dtime_max_increment)
-                       dtime_part = dtime_max_increment;
-               else
-                       dtime_part = dtime;
-               dtime -= dtime_part;
-               
-               /*
-                       Handle players
-               */
-               for(core::list<Player*>::Iterator i = m_players.begin();
-                               i != m_players.end(); i++)
-               {
-                       Player *player = *i;
-
-                       v3f playerpos = player->getPosition();
-                       
-                       // Apply physics to local player
-                       bool free_move = g_settings.getBool("free_move");
-                       if(player->isLocal() && free_move == false)
-                       {
-                               // Apply gravity to local player
-                               v3f speed = player->getSpeed();
-                               if(player->swimming_up == false)
-                                       speed.Y -= 9.81 * BS * dtime_part * 2;
-
-                               /*
-                                       Apply water resistance
-                               */
-                               if(player->in_water_stable || player->in_water)
-                               {
-                                       f32 max_down = 2.0*BS;
-                                       if(speed.Y < -max_down) speed.Y = -max_down;
-
-                                       f32 max = 2.5*BS;
-                                       if(speed.getLength() > max)
-                                       {
-                                               speed = speed / speed.getLength() * max;
-                                       }
-                               }
-
-                               player->setSpeed(speed);
-                       }
-
-                       /*
-                               Move the player.
-                               For local player, this also calculates collision detection.
-                       */
-                       player->move(dtime_part, *m_map);
-                       
-                       /*
-                               Update lighting on remote players on client
-                       */
-                       u8 light = LIGHT_MAX;
-                       try{
-                               // Get node at feet
-                               v3s16 p = floatToInt(playerpos + v3f(0,BS/4,0));
-                               MapNode n = m_map->getNode(p);
-                               light = n.getLightBlend(m_daynight_ratio);
-                       }
-                       catch(InvalidPositionException &e) {}
-                       player->updateLight(light);
-
-                       /*
-                               Add footsteps to grass
-                       */
-                       if(g_settings.getBool("footprints"))
-                       {
-                               // Get node that is at BS/4 under player
-                               v3s16 bottompos = floatToInt(playerpos + v3f(0,-BS/4,0));
-                               try{
-                                       MapNode n = m_map->getNode(bottompos);
-                                       if(n.d == CONTENT_GRASS)
-                                       {
-                                               n.d = CONTENT_GRASS_FOOTSTEPS;
-                                               m_map->setNode(bottompos, n);
-#ifndef SERVER
-                                               // Update mesh on client
-                                               if(m_map->mapType() == MAPTYPE_CLIENT)
-                                               {
-                                                       v3s16 p_blocks = getNodeBlockPos(bottompos);
-                                                       MapBlock *b = m_map->getBlockNoCreate(p_blocks);
-                                                       b->updateMesh(m_daynight_ratio);
-                                               }
-#endif
-                                       }
-                               }
-                               catch(InvalidPositionException &e)
-                               {
-                               }
-                       }
-               }
-       }
-       while(dtime > 0.001);
-       
-       //std::cout<<"Looped "<<loopcount<<" times."<<std::endl;
-}
-
-Map & Environment::getMap()
-{
-       return *m_map;
 }
 
 void Environment::addPlayer(Player *player)
 {
        DSTACK(__FUNCTION_NAME);
        /*
-               Check that only one local player exists and peer_ids are unique.
+               Check that peer_ids are unique.
                Also check that names are unique.
                Exception: there can be multiple players with peer_id=0
        */
-#ifndef SERVER
-       /*
-               It is a failure if player is local and there already is a local
-               player
-       */
-       assert(!(player->isLocal() == true && getLocalPlayer() != NULL));
-#endif
        // If peer id is non-zero, it has to be unique.
        if(player->peer_id != 0)
                assert(getPlayer(player->peer_id) == NULL);
@@ -235,44 +75,69 @@ void Environment::removePlayer(u16 peer_id)
        }
 }
 
-#ifndef SERVER
-LocalPlayer * Environment::getLocalPlayer()
+Player * Environment::getPlayer(u16 peer_id)
 {
        for(core::list<Player*>::Iterator i = m_players.begin();
                        i != m_players.end(); i++)
        {
                Player *player = *i;
-               if(player->isLocal())
-                       return (LocalPlayer*)player;
+               if(player->peer_id == peer_id)
+                       return player;
        }
        return NULL;
 }
-#endif
 
-Player * Environment::getPlayer(u16 peer_id)
+Player * Environment::getPlayer(const char *name)
 {
        for(core::list<Player*>::Iterator i = m_players.begin();
                        i != m_players.end(); i++)
        {
                Player *player = *i;
-               if(player->peer_id == peer_id)
+               if(strcmp(player->getName(), name) == 0)
                        return player;
        }
        return NULL;
 }
 
-Player * Environment::getPlayer(const char *name)
+Player * Environment::getRandomConnectedPlayer()
 {
-       for(core::list<Player*>::Iterator i = m_players.begin();
-                       i != m_players.end(); i++)
+       core::list<Player*> connected_players = getPlayers(true);
+       u32 chosen_one = myrand() % connected_players.size();
+       u32 j = 0;
+       for(core::list<Player*>::Iterator
+                       i = connected_players.begin();
+                       i != connected_players.end(); i++)
        {
-               Player *player = *i;
-               if(strcmp(player->getName(), name) == 0)
+               if(j == chosen_one)
+               {
+                       Player *player = *i;
                        return player;
+               }
+               j++;
        }
        return NULL;
 }
 
+Player * Environment::getNearestConnectedPlayer(v3f pos)
+{
+       core::list<Player*> connected_players = getPlayers(true);
+       f32 nearest_d = 0;
+       Player *nearest_player = NULL;
+       for(core::list<Player*>::Iterator
+                       i = connected_players.begin();
+                       i != connected_players.end(); i++)
+       {
+               Player *player = *i;
+               f32 d = player->getPosition().getDistanceFrom(pos);
+               if(d < nearest_d || nearest_player == NULL)
+               {
+                       nearest_d = d;
+                       nearest_player = player;
+               }
+       }
+       return nearest_player;
+}
+
 core::list<Player*> Environment::getPlayers()
 {
        return m_players;
@@ -310,7 +175,114 @@ void Environment::printPlayers(std::ostream &o)
        }
 }
 
-void Environment::serializePlayers(const std::string &savedir)
+/*void Environment::setDayNightRatio(u32 r)
+{
+       getDayNightRatio() = r;
+}*/
+
+u32 Environment::getDayNightRatio()
+{
+       //return getDayNightRatio();
+       return time_to_daynight_ratio(m_time_of_day);
+}
+
+/*
+       ActiveBlockList
+*/
+
+void fillRadiusBlock(v3s16 p0, s16 r, core::map<v3s16, bool> &list)
+{
+       v3s16 p;
+       for(p.X=p0.X-r; p.X<=p0.X+r; p.X++)
+       for(p.Y=p0.Y-r; p.Y<=p0.Y+r; p.Y++)
+       for(p.Z=p0.Z-r; p.Z<=p0.Z+r; p.Z++)
+       {
+               // Set in list
+               list[p] = true;
+       }
+}
+
+void ActiveBlockList::update(core::list<v3s16> &active_positions,
+               s16 radius,
+               core::map<v3s16, bool> &blocks_removed,
+               core::map<v3s16, bool> &blocks_added)
+{
+       /*
+               Create the new list
+       */
+       core::map<v3s16, bool> newlist;
+       for(core::list<v3s16>::Iterator i = active_positions.begin();
+                       i != active_positions.end(); i++)
+       {
+               fillRadiusBlock(*i, radius, newlist);
+       }
+
+       /*
+               Find out which blocks on the old list are not on the new list
+       */
+       // Go through old list
+       for(core::map<v3s16, bool>::Iterator i = m_list.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               v3s16 p = i.getNode()->getKey();
+               // If not on new list, it's been removed
+               if(newlist.find(p) == NULL)
+                       blocks_removed.insert(p, true);
+       }
+
+       /*
+               Find out which blocks on the new list are not on the old list
+       */
+       // Go through new list
+       for(core::map<v3s16, bool>::Iterator i = newlist.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               v3s16 p = i.getNode()->getKey();
+               // If not on old list, it's been added
+               if(m_list.find(p) == NULL)
+                       blocks_added.insert(p, true);
+       }
+
+       /*
+               Update m_list
+       */
+       m_list.clear();
+       for(core::map<v3s16, bool>::Iterator i = newlist.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               v3s16 p = i.getNode()->getKey();
+               m_list.insert(p, true);
+       }
+}
+
+/*
+       ServerEnvironment
+*/
+
+ServerEnvironment::ServerEnvironment(ServerMap *map, Server *server):
+       m_map(map),
+       m_server(server),
+       m_random_spawn_timer(3),
+       m_send_recommended_timer(0),
+       m_game_time(0),
+       m_game_time_fraction_counter(0)
+{
+}
+
+ServerEnvironment::~ServerEnvironment()
+{
+       // Clear active block list.
+       // This makes the next one delete all active objects.
+       m_active_blocks.clear();
+
+       // Convert all objects to static and delete the active objects
+       deactivateFarObjects(true);
+
+       // Drop/delete map
+       m_map->drop();
+}
+
+void ServerEnvironment::serializePlayers(const std::string &savedir)
 {
        std::string players_path = savedir + "/players";
        fs::CreateDir(players_path);
@@ -425,7 +397,7 @@ void Environment::serializePlayers(const std::string &savedir)
        //dstream<<"Saved "<<saved_players.size()<<" players."<<std::endl;
 }
 
-void Environment::deSerializePlayers(const std::string &savedir)
+void ServerEnvironment::deSerializePlayers(const std::string &savedir)
 {
        std::string players_path = savedir + "/players";
 
@@ -455,7 +427,14 @@ void Environment::deSerializePlayers(const std::string &savedir)
                        testplayer.deSerialize(is);
                }
 
-               dstream<<"Loaded test player with name "<<testplayer.getName()<<std::endl;
+               if(!string_allowed(testplayer.getName(), PLAYERNAME_ALLOWED_CHARS))
+               {
+                       dstream<<"Not loading player with invalid name: "
+                                       <<testplayer.getName()<<std::endl;
+               }
+
+               dstream<<"Loaded test player with name "<<testplayer.getName()
+                               <<std::endl;
                
                // Search for the player
                std::string playername = testplayer.getName();
@@ -487,25 +466,1374 @@ void Environment::deSerializePlayers(const std::string &savedir)
        }
 }
 
-#ifndef SERVER
-void Environment::updateMeshes(v3s16 blockpos)
+void ServerEnvironment::saveMeta(const std::string &savedir)
 {
-       m_map->updateMeshes(blockpos, m_daynight_ratio);
+       std::string path = savedir + "/env_meta.txt";
+
+       // Open file and serialize
+       std::ofstream os(path.c_str(), std::ios_base::binary);
+       if(os.good() == false)
+       {
+               dstream<<"WARNING: ServerEnvironment::saveMeta(): Failed to open "
+                               <<path<<std::endl;
+               throw SerializationError("Couldn't save env meta");
+       }
+
+       Settings args;
+       args.setU64("game_time", m_game_time);
+       args.setU64("time_of_day", getTimeOfDay());
+       args.writeLines(os);
+       os<<"EnvArgsEnd\n";
 }
 
-void Environment::expireMeshes(bool only_daynight_diffed)
+void ServerEnvironment::loadMeta(const std::string &savedir)
 {
-       m_map->expireMeshes(only_daynight_diffed);
+       std::string path = savedir + "/env_meta.txt";
+
+       // Open file and deserialize
+       std::ifstream is(path.c_str(), std::ios_base::binary);
+       if(is.good() == false)
+       {
+               dstream<<"WARNING: ServerEnvironment::loadMeta(): Failed to open "
+                               <<path<<std::endl;
+               throw SerializationError("Couldn't load env meta");
+       }
+
+       Settings args;
+       
+       for(;;)
+       {
+               if(is.eof())
+                       throw SerializationError
+                                       ("ServerEnvironment::loadMeta(): EnvArgsEnd not found");
+               std::string line;
+               std::getline(is, line);
+               std::string trimmedline = trim(line);
+               if(trimmedline == "EnvArgsEnd")
+                       break;
+               args.parseConfigLine(line);
+       }
+       
+       try{
+               m_game_time = args.getU64("game_time");
+       }catch(SettingNotFoundException &e){
+               // Getting this is crucial, otherwise timestamps are useless
+               throw SerializationError("Couldn't load env meta game_time");
+       }
+
+       try{
+               m_time_of_day = args.getU64("time_of_day");
+       }catch(SettingNotFoundException &e){
+               // This is not as important
+               m_time_of_day = 9000;
+       }
 }
-#endif
 
-void Environment::setDayNightRatio(u32 r)
+#if 0
+// This is probably very useless
+void spawnRandomObjects(MapBlock *block)
 {
-       m_daynight_ratio = r;
+       for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
+       for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
+       {
+               bool last_node_walkable = false;
+               for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
+               {
+                       v3s16 p(x0,y0,z0);
+                       MapNode n = block->getNodeNoEx(p);
+                       if(n.d == CONTENT_IGNORE)
+                               continue;
+                       if(content_features(n.d).liquid_type != LIQUID_NONE)
+                               continue;
+                       if(content_features(n.d).walkable)
+                       {
+                               last_node_walkable = true;
+                               continue;
+                       }
+                       if(last_node_walkable)
+                       {
+                               // If block contains light information
+                               if(content_features(n.d).param_type == CPT_LIGHT)
+                               {
+                                       if(n.getLight(LIGHTBANK_DAY) <= 5)
+                                       {
+                                               if(myrand() % 1000 == 0)
+                                               {
+                                                       v3f pos_f = intToFloat(p+block->getPosRelative(), BS);
+                                                       pos_f.Y -= BS*0.4;
+                                                       ServerActiveObject *obj = new Oerkki1SAO(NULL,0,pos_f);
+                                                       std::string data = obj->getStaticData();
+                                                       StaticObject s_obj(obj->getType(),
+                                                                       obj->getBasePosition(), data);
+                                                       // Add one
+                                                       block->m_static_objects.insert(0, s_obj);
+                                                       delete obj;
+                                                       block->setChangedFlag();
+                                               }
+                                       }
+                               }
+                       }
+                       last_node_walkable = false;
+               }
+       }
 }
+#endif
 
-u32 Environment::getDayNightRatio()
+void ServerEnvironment::step(float dtime)
 {
-       return m_daynight_ratio;
-}
+       DSTACK(__FUNCTION_NAME);
+       
+       //TimeTaker timer("ServerEnv step");
+
+       // Get some settings
+       bool footprints = g_settings.getBool("footprints");
+
+       /*
+               Increment game time
+       */
+       {
+               m_game_time_fraction_counter += dtime;
+               u32 inc_i = (u32)m_game_time_fraction_counter;
+               m_game_time += inc_i;
+               m_game_time_fraction_counter -= (float)inc_i;
+       }
+       
+       /*
+               Let map update it's timers
+       */
+       {
+               //TimeTaker timer("Server m_map->timerUpdate()");
+               m_map->timerUpdate(dtime);
+       }
+
+       /*
+               Handle players
+       */
+       for(core::list<Player*>::Iterator i = m_players.begin();
+                       i != m_players.end(); i++)
+       {
+               Player *player = *i;
+               
+               // Ignore disconnected players
+               if(player->peer_id == 0)
+                       continue;
+
+               v3f playerpos = player->getPosition();
+               
+               // Move
+               player->move(dtime, *m_map, 100*BS);
+               
+               /*
+                       Add footsteps to grass
+               */
+               if(footprints)
+               {
+                       // Get node that is at BS/4 under player
+                       v3s16 bottompos = floatToInt(playerpos + v3f(0,-BS/4,0), BS);
+                       try{
+                               MapNode n = m_map->getNode(bottompos);
+                               if(n.d == CONTENT_GRASS)
+                               {
+                                       n.d = CONTENT_GRASS_FOOTSTEPS;
+                                       m_map->setNode(bottompos, n);
+                               }
+                       }
+                       catch(InvalidPositionException &e)
+                       {
+                       }
+               }
+       }
+
+       /*
+               Manage active block list
+       */
+       if(m_active_blocks_management_interval.step(dtime, 2.0))
+       {
+               /*
+                       Get player block positions
+               */
+               core::list<v3s16> players_blockpos;
+               for(core::list<Player*>::Iterator
+                               i = m_players.begin();
+                               i != m_players.end(); i++)
+               {
+                       Player *player = *i;
+                       // Ignore disconnected players
+                       if(player->peer_id == 0)
+                               continue;
+                       v3s16 blockpos = getNodeBlockPos(
+                                       floatToInt(player->getPosition(), BS));
+                       players_blockpos.push_back(blockpos);
+               }
+               
+               /*
+                       Update list of active blocks, collecting changes
+               */
+               const s16 active_block_range = 5;
+               core::map<v3s16, bool> blocks_removed;
+               core::map<v3s16, bool> blocks_added;
+               m_active_blocks.update(players_blockpos, active_block_range,
+                               blocks_removed, blocks_added);
+
+               /*
+                       Handle removed blocks
+               */
+
+               // Convert active objects that are no more in active blocks to static
+               deactivateFarObjects(false);
+               
+               for(core::map<v3s16, bool>::Iterator
+                               i = blocks_removed.getIterator();
+                               i.atEnd()==false; i++)
+               {
+                       v3s16 p = i.getNode()->getKey();
+
+                       /*dstream<<"Server: Block ("<<p.X<<","<<p.Y<<","<<p.Z
+                                       <<") became inactive"<<std::endl;*/
+                       
+                       MapBlock *block = m_map->getBlockNoCreateNoEx(p);
+                       if(block==NULL)
+                               continue;
+                       
+                       // Set current time as timestamp (and let it set ChangedFlag)
+                       block->setTimestamp(m_game_time);
+               }
+
+               /*
+                       Handle added blocks
+               */
+
+               for(core::map<v3s16, bool>::Iterator
+                               i = blocks_added.getIterator();
+                               i.atEnd()==false; i++)
+               {
+                       v3s16 p = i.getNode()->getKey();
+                       
+                       /*dstream<<"Server: Block ("<<p.X<<","<<p.Y<<","<<p.Z
+                                       <<") became active"<<std::endl;*/
+
+                       MapBlock *block = m_map->getBlockNoCreateNoEx(p);
+                       if(block==NULL)
+                               continue;
+                       
+                       // Get time difference
+                       u32 dtime_s = 0;
+                       u32 stamp = block->getTimestamp();
+                       if(m_game_time > stamp && stamp != BLOCK_TIMESTAMP_UNDEFINED)
+                               dtime_s = m_game_time - block->getTimestamp();
+
+                       // Set current time as timestamp (and let it set ChangedFlag)
+                       block->setTimestamp(m_game_time);
+
+                       //dstream<<"Block is "<<dtime_s<<" seconds old."<<std::endl;
+                       
+                       // Activate stored objects
+                       activateObjects(block);
+
+                       // Run node metadata
+                       bool changed = block->m_node_metadata.step((float)dtime_s);
+                       if(changed)
+                       {
+                               MapEditEvent event;
+                               event.type = MEET_BLOCK_NODE_METADATA_CHANGED;
+                               event.p = p;
+                               m_map->dispatchEvent(&event);
+
+                               block->setChangedFlag();
+                       }
+
+                       // TODO: Do something
+                       // TODO: Implement usage of ActiveBlockModifier
+                       
+                       // Here's a quick demonstration
+                       v3s16 p0;
+                       for(p0.X=0; p0.X<MAP_BLOCKSIZE; p0.X++)
+                       for(p0.Y=0; p0.Y<MAP_BLOCKSIZE; p0.Y++)
+                       for(p0.Z=0; p0.Z<MAP_BLOCKSIZE; p0.Z++)
+                       {
+                               v3s16 p = p0 + block->getPosRelative();
+                               MapNode n = block->getNodeNoEx(p0);
+                               // Test something:
+                               // Convert all mud under proper day lighting to grass
+                               if(n.d == CONTENT_MUD)
+                               {
+                                       if(dtime_s > 300)
+                                       {
+                                               MapNode n_top = block->getNodeNoEx(p0+v3s16(0,1,0));
+                                               if(content_features(n_top.d).air_equivalent &&
+                                                               n_top.getLight(LIGHTBANK_DAY) >= 13)
+                                               {
+                                                       n.d = CONTENT_GRASS;
+                                                       m_map->addNodeWithEvent(p, n);
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+
+       /*
+               Mess around in active blocks
+       */
+       if(m_active_blocks_nodemetadata_interval.step(dtime, 1.0))
+       {
+               float dtime = 1.0;
+
+               for(core::map<v3s16, bool>::Iterator
+                               i = m_active_blocks.m_list.getIterator();
+                               i.atEnd()==false; i++)
+               {
+                       v3s16 p = i.getNode()->getKey();
+                       
+                       /*dstream<<"Server: Block ("<<p.X<<","<<p.Y<<","<<p.Z
+                                       <<") being handled"<<std::endl;*/
+
+                       MapBlock *block = m_map->getBlockNoCreateNoEx(p);
+                       if(block==NULL)
+                               continue;
+                       
+                       // Set current time as timestamp
+                       block->setTimestampNoChangedFlag(m_game_time);
+
+                       // Run node metadata
+                       bool changed = block->m_node_metadata.step(dtime);
+                       if(changed)
+                       {
+                               MapEditEvent event;
+                               event.type = MEET_BLOCK_NODE_METADATA_CHANGED;
+                               event.p = p;
+                               m_map->dispatchEvent(&event);
+
+                               block->setChangedFlag();
+                       }
+               }
+       }
+       if(m_active_blocks_test_interval.step(dtime, 10.0))
+       {
+               //float dtime = 10.0;
+
+               for(core::map<v3s16, bool>::Iterator
+                               i = m_active_blocks.m_list.getIterator();
+                               i.atEnd()==false; i++)
+               {
+                       v3s16 p = i.getNode()->getKey();
+                       
+                       /*dstream<<"Server: Block ("<<p.X<<","<<p.Y<<","<<p.Z
+                                       <<") being handled"<<std::endl;*/
+
+                       MapBlock *block = m_map->getBlockNoCreateNoEx(p);
+                       if(block==NULL)
+                               continue;
+                       
+                       // Set current time as timestamp
+                       block->setTimestampNoChangedFlag(m_game_time);
+
+                       /*
+                               Do stuff!
+
+                               Note that map modifications should be done using the event-
+                               making map methods so that the server gets information
+                               about them.
+
+                               Reading can be done quickly directly from the block.
+
+                               Everything should bind to inside this single content
+                               searching loop to keep things fast.
+                       */
+                       // TODO: Implement usage of ActiveBlockModifier
+
+                       v3s16 p0;
+                       for(p0.X=0; p0.X<MAP_BLOCKSIZE; p0.X++)
+                       for(p0.Y=0; p0.Y<MAP_BLOCKSIZE; p0.Y++)
+                       for(p0.Z=0; p0.Z<MAP_BLOCKSIZE; p0.Z++)
+                       {
+                               v3s16 p = p0 + block->getPosRelative();
+                               MapNode n = block->getNodeNoEx(p0);
+
+                               /*
+                                       Test something:
+                                       Convert mud under proper lighting to grass
+                               */
+                               if(n.d == CONTENT_MUD)
+                               {
+                                       if(myrand()%20 == 0)
+                                       {
+                                               MapNode n_top = block->getNodeNoEx(p0+v3s16(0,1,0));
+                                               if(content_features(n_top.d).air_equivalent &&
+                                                               n_top.getLightBlend(getDayNightRatio()) >= 13)
+                                               {
+                                                       n.d = CONTENT_GRASS;
+                                                       m_map->addNodeWithEvent(p, n);
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+       
+       /*
+               Step active objects
+       */
+       {
+               //TimeTaker timer("Step active objects");
+               
+               // This helps the objects to send data at the same time
+               bool send_recommended = false;
+               m_send_recommended_timer += dtime;
+               if(m_send_recommended_timer > 0.15)
+               {
+                       m_send_recommended_timer = 0;
+                       send_recommended = true;
+               }
+
+               for(core::map<u16, ServerActiveObject*>::Iterator
+                               i = m_active_objects.getIterator();
+                               i.atEnd()==false; i++)
+               {
+                       ServerActiveObject* obj = i.getNode()->getValue();
+                       // Don't step if is to be removed or stored statically
+                       if(obj->m_removed || obj->m_pending_deactivation)
+                               continue;
+                       // Step object, putting messages directly to the queue
+                       obj->step(dtime, m_active_object_messages, send_recommended);
+               }
+       }
+       
+       /*
+               Manage active objects
+       */
+       if(m_object_management_interval.step(dtime, 0.5))
+       {
+               /*
+                       Remove objects that satisfy (m_removed && m_known_by_count==0)
+               */
+               removeRemovedObjects();
+       }
+
+       if(g_settings.getBool("enable_experimental"))
+       {
+
+       /*
+               TEST CODE
+       */
+#if 1
+       m_random_spawn_timer -= dtime;
+       if(m_random_spawn_timer < 0)
+       {
+               //m_random_spawn_timer += myrand_range(2.0, 20.0);
+               //m_random_spawn_timer += 2.0;
+               m_random_spawn_timer += 200.0;
+
+               /*
+                       Find some position
+               */
+
+               /*v2s16 p2d(myrand_range(-5,5), myrand_range(-5,5));
+               s16 y = 1 + getServerMap().findGroundLevel(p2d);
+               v3f pos(p2d.X*BS,y*BS,p2d.Y*BS);*/
+               
+               Player *player = getRandomConnectedPlayer();
+               v3f pos(0,0,0);
+               if(player)
+                       pos = player->getPosition();
+               pos += v3f(
+                       myrand_range(-3,3)*BS,
+                       0,
+                       myrand_range(-3,3)*BS
+               );
+
+               /*
+                       Create a ServerActiveObject
+               */
+
+               //TestSAO *obj = new TestSAO(this, 0, pos);
+               //ServerActiveObject *obj = new ItemSAO(this, 0, pos, "CraftItem Stick 1");
+               //ServerActiveObject *obj = new RatSAO(this, 0, pos);
+               ServerActiveObject *obj = new Oerkki1SAO(this, 0, pos);
+               addActiveObject(obj);
+       }
+#endif
+
+       } // enable_experimental
+}
+
+ServerActiveObject* ServerEnvironment::getActiveObject(u16 id)
+{
+       core::map<u16, ServerActiveObject*>::Node *n;
+       n = m_active_objects.find(id);
+       if(n == NULL)
+               return NULL;
+       return n->getValue();
+}
+
+bool isFreeServerActiveObjectId(u16 id,
+               core::map<u16, ServerActiveObject*> &objects)
+{
+       if(id == 0)
+               return false;
+       
+       for(core::map<u16, ServerActiveObject*>::Iterator
+                       i = objects.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               if(i.getNode()->getKey() == id)
+                       return false;
+       }
+       return true;
+}
+
+u16 getFreeServerActiveObjectId(
+               core::map<u16, ServerActiveObject*> &objects)
+{
+       u16 new_id = 1;
+       for(;;)
+       {
+               if(isFreeServerActiveObjectId(new_id, objects))
+                       return new_id;
+               
+               if(new_id == 65535)
+                       return 0;
+
+               new_id++;
+       }
+}
+
+u16 ServerEnvironment::addActiveObject(ServerActiveObject *object)
+{
+       assert(object);
+       u16 id = addActiveObjectRaw(object, true);
+       return id;
+}
+
+/*
+       Finds out what new objects have been added to
+       inside a radius around a position
+*/
+void ServerEnvironment::getAddedActiveObjects(v3s16 pos, s16 radius,
+               core::map<u16, bool> &current_objects,
+               core::map<u16, bool> &added_objects)
+{
+       v3f pos_f = intToFloat(pos, BS);
+       f32 radius_f = radius * BS;
+       /*
+               Go through the object list,
+               - discard m_removed objects,
+               - discard objects that are too far away,
+               - discard objects that are found in current_objects.
+               - add remaining objects to added_objects
+       */
+       for(core::map<u16, ServerActiveObject*>::Iterator
+                       i = m_active_objects.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               u16 id = i.getNode()->getKey();
+               // Get object
+               ServerActiveObject *object = i.getNode()->getValue();
+               if(object == NULL)
+                       continue;
+               // Discard if removed
+               if(object->m_removed)
+                       continue;
+               // Discard if too far
+               f32 distance_f = object->getBasePosition().getDistanceFrom(pos_f);
+               if(distance_f > radius_f)
+                       continue;
+               // Discard if already on current_objects
+               core::map<u16, bool>::Node *n;
+               n = current_objects.find(id);
+               if(n != NULL)
+                       continue;
+               // Add to added_objects
+               added_objects.insert(id, false);
+       }
+}
+
+/*
+       Finds out what objects have been removed from
+       inside a radius around a position
+*/
+void ServerEnvironment::getRemovedActiveObjects(v3s16 pos, s16 radius,
+               core::map<u16, bool> &current_objects,
+               core::map<u16, bool> &removed_objects)
+{
+       v3f pos_f = intToFloat(pos, BS);
+       f32 radius_f = radius * BS;
+       /*
+               Go through current_objects; object is removed if:
+               - object is not found in m_active_objects (this is actually an
+                 error condition; objects should be set m_removed=true and removed
+                 only after all clients have been informed about removal), or
+               - object has m_removed=true, or
+               - object is too far away
+       */
+       for(core::map<u16, bool>::Iterator
+                       i = current_objects.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               u16 id = i.getNode()->getKey();
+               ServerActiveObject *object = getActiveObject(id);
+               if(object == NULL)
+               {
+                       dstream<<"WARNING: ServerEnvironment::getRemovedActiveObjects():"
+                                       <<" object in current_objects is NULL"<<std::endl;
+               }
+               else if(object->m_removed == false)
+               {
+                       f32 distance_f = object->getBasePosition().getDistanceFrom(pos_f);
+                       /*dstream<<"removed == false"
+                                       <<"distance_f = "<<distance_f
+                                       <<", radius_f = "<<radius_f<<std::endl;*/
+                       if(distance_f < radius_f)
+                       {
+                               // Not removed
+                               continue;
+                       }
+               }
+               removed_objects.insert(id, false);
+       }
+}
+
+ActiveObjectMessage ServerEnvironment::getActiveObjectMessage()
+{
+       if(m_active_object_messages.size() == 0)
+               return ActiveObjectMessage(0);
+       
+       return m_active_object_messages.pop_front();
+}
+
+/*
+       ************ Private methods *************
+*/
+
+u16 ServerEnvironment::addActiveObjectRaw(ServerActiveObject *object,
+               bool set_changed)
+{
+       assert(object);
+       if(object->getId() == 0)
+       {
+               u16 new_id = getFreeServerActiveObjectId(m_active_objects);
+               if(new_id == 0)
+               {
+                       dstream<<"WARNING: ServerEnvironment::addActiveObjectRaw(): "
+                                       <<"no free ids available"<<std::endl;
+                       delete object;
+                       return 0;
+               }
+               object->setId(new_id);
+       }
+       if(isFreeServerActiveObjectId(object->getId(), m_active_objects) == false)
+       {
+               dstream<<"WARNING: ServerEnvironment::addActiveObjectRaw(): "
+                               <<"id is not free ("<<object->getId()<<")"<<std::endl;
+               delete object;
+               return 0;
+       }
+       /*dstream<<"INGO: ServerEnvironment::addActiveObjectRaw(): "
+                       <<"added (id="<<object->getId()<<")"<<std::endl;*/
+                       
+       m_active_objects.insert(object->getId(), object);
+
+       // Add static object to active static list of the block
+       v3f objectpos = object->getBasePosition();
+       std::string staticdata = object->getStaticData();
+       StaticObject s_obj(object->getType(), objectpos, staticdata);
+       // Add to the block where the object is located in
+       v3s16 blockpos = getNodeBlockPos(floatToInt(objectpos, BS));
+       MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
+       if(block)
+       {
+               block->m_static_objects.m_active.insert(object->getId(), s_obj);
+               object->m_static_exists = true;
+               object->m_static_block = blockpos;
+
+               if(set_changed)
+                       block->setChangedFlag();
+       }
+       else{
+               dstream<<"WARNING: Server: Could not find a block for "
+                               <<"storing newly added static active object"<<std::endl;
+       }
+
+       return object->getId();
+}
+
+/*
+       Remove objects that satisfy (m_removed && m_known_by_count==0)
+*/
+void ServerEnvironment::removeRemovedObjects()
+{
+       core::list<u16> objects_to_remove;
+       for(core::map<u16, ServerActiveObject*>::Iterator
+                       i = m_active_objects.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               u16 id = i.getNode()->getKey();
+               ServerActiveObject* obj = i.getNode()->getValue();
+               // This shouldn't happen but check it
+               if(obj == NULL)
+               {
+                       dstream<<"WARNING: NULL object found in ServerEnvironment"
+                                       <<" while finding removed objects. id="<<id<<std::endl;
+                       // Id to be removed from m_active_objects
+                       objects_to_remove.push_back(id);
+                       continue;
+               }
+
+               /*
+                       We will delete objects that are marked as removed or thatare
+                       waiting for deletion after deactivation
+               */
+               if(obj->m_removed == false && obj->m_pending_deactivation == false)
+                       continue;
+
+               /*
+                       Delete static data from block if is marked as removed
+               */
+               if(obj->m_static_exists && obj->m_removed)
+               {
+                       MapBlock *block = m_map->getBlockNoCreateNoEx(obj->m_static_block);
+                       if(block)
+                       {
+                               block->m_static_objects.remove(id);
+                               block->setChangedFlag();
+                       }
+               }
+
+               // If m_known_by_count > 0, don't actually remove.
+               if(obj->m_known_by_count > 0)
+                       continue;
+               
+               // Delete
+               delete obj;
+               // Id to be removed from m_active_objects
+               objects_to_remove.push_back(id);
+       }
+       // Remove references from m_active_objects
+       for(core::list<u16>::Iterator i = objects_to_remove.begin();
+                       i != objects_to_remove.end(); i++)
+       {
+               m_active_objects.remove(*i);
+       }
+}
+
+/*
+       Convert stored objects from blocks near the players to active.
+*/
+void ServerEnvironment::activateObjects(MapBlock *block)
+{
+       if(block==NULL)
+               return;
+       // Ignore if no stored objects (to not set changed flag)
+       if(block->m_static_objects.m_stored.size() == 0)
+               return;
+       // A list for objects that couldn't be converted to static for some
+       // reason. They will be stored back.
+       core::list<StaticObject> new_stored;
+       // Loop through stored static objects
+       for(core::list<StaticObject>::Iterator
+                       i = block->m_static_objects.m_stored.begin();
+                       i != block->m_static_objects.m_stored.end(); i++)
+       {
+               /*dstream<<"INFO: Server: Creating an active object from "
+                               <<"static data"<<std::endl;*/
+               StaticObject &s_obj = *i;
+               // Create an active object from the data
+               ServerActiveObject *obj = ServerActiveObject::create
+                               (s_obj.type, this, 0, s_obj.pos, s_obj.data);
+               // If couldn't create object, store static data back.
+               if(obj==NULL)
+               {
+                       new_stored.push_back(s_obj);
+                       continue;
+               }
+               // This will also add the object to the active static list
+               addActiveObjectRaw(obj, false);
+               //u16 id = addActiveObjectRaw(obj, false);
+       }
+       // Clear stored list
+       block->m_static_objects.m_stored.clear();
+       // Add leftover failed stuff to stored list
+       for(core::list<StaticObject>::Iterator
+                       i = new_stored.begin();
+                       i != new_stored.end(); i++)
+       {
+               StaticObject &s_obj = *i;
+               block->m_static_objects.m_stored.push_back(s_obj);
+       }
+       // Block has been modified
+       // NOTE: No it has not really. Save I/O here.
+       //block->setChangedFlag();
+}
+
+/*
+       Convert objects that are not in active blocks to static.
+
+       If m_known_by_count != 0, active object is not deleted, but static
+       data is still updated.
+
+       If force_delete is set, active object is deleted nevertheless. It
+       shall only be set so in the destructor of the environment.
+*/
+void ServerEnvironment::deactivateFarObjects(bool force_delete)
+{
+       core::list<u16> objects_to_remove;
+       for(core::map<u16, ServerActiveObject*>::Iterator
+                       i = m_active_objects.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               ServerActiveObject* obj = i.getNode()->getValue();
+               u16 id = i.getNode()->getKey();
+               v3f objectpos = obj->getBasePosition();
+
+               // This shouldn't happen but check it
+               if(obj == NULL)
+               {
+                       dstream<<"WARNING: NULL object found in ServerEnvironment"
+                                       <<std::endl;
+                       assert(0);
+                       continue;
+               }
+
+               // The block in which the object resides in
+               v3s16 blockpos_o = getNodeBlockPos(floatToInt(objectpos, BS));
+               
+               // If block is active, don't remove
+               if(m_active_blocks.contains(blockpos_o))
+                       continue;
+
+               /*
+                       Update the static data
+               */
+
+               // Delete old static object
+               MapBlock *oldblock = NULL;
+               if(obj->m_static_exists)
+               {
+                       MapBlock *block = m_map->getBlockNoCreateNoEx
+                                       (obj->m_static_block);
+                       if(block)
+                       {
+                               block->m_static_objects.remove(id);
+                               oldblock = block;
+                       }
+               }
+               // Create new static object
+               std::string staticdata = obj->getStaticData();
+               StaticObject s_obj(obj->getType(), objectpos, staticdata);
+               // Add to the block where the object is located in
+               v3s16 blockpos = getNodeBlockPos(floatToInt(objectpos, BS));
+               MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
+               if(block)
+               {
+                       block->m_static_objects.insert(0, s_obj);
+                       block->setChangedFlag();
+                       obj->m_static_exists = true;
+                       obj->m_static_block = block->getPos();
+               }
+               // If not possible, add back to previous block
+               else if(oldblock)
+               {
+                       oldblock->m_static_objects.insert(0, s_obj);
+                       oldblock->setChangedFlag();
+                       obj->m_static_exists = true;
+                       obj->m_static_block = oldblock->getPos();
+               }
+               else{
+                       dstream<<"WARNING: Server: Could not find a block for "
+                                       <<"storing static object"<<std::endl;
+                       obj->m_static_exists = false;
+                       continue;
+               }
+
+               /*
+                       Delete active object if not known by some client,
+                       else set pending deactivation
+               */
+
+               // If known by some client, don't delete.
+               if(obj->m_known_by_count > 0 && force_delete == false)
+               {
+                       obj->m_pending_deactivation = true;
+                       continue;
+               }
+               
+               /*dstream<<"INFO: Server: Stored static data. Deleting object."
+                               <<std::endl;*/
+               // Delete active object
+               delete obj;
+               // Id to be removed from m_active_objects
+               objects_to_remove.push_back(id);
+       }
+
+       // Remove references from m_active_objects
+       for(core::list<u16>::Iterator i = objects_to_remove.begin();
+                       i != objects_to_remove.end(); i++)
+       {
+               m_active_objects.remove(*i);
+       }
+}
+
+
+#ifndef SERVER
+
+/*
+       ClientEnvironment
+*/
+
+ClientEnvironment::ClientEnvironment(ClientMap *map, scene::ISceneManager *smgr):
+       m_map(map),
+       m_smgr(smgr)
+{
+       assert(m_map);
+       assert(m_smgr);
+}
+
+ClientEnvironment::~ClientEnvironment()
+{
+       // delete active objects
+       for(core::map<u16, ClientActiveObject*>::Iterator
+                       i = m_active_objects.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               delete i.getNode()->getValue();
+       }
+
+       // Drop/delete map
+       m_map->drop();
+}
+
+void ClientEnvironment::addPlayer(Player *player)
+{
+       DSTACK(__FUNCTION_NAME);
+       /*
+               It is a failure if player is local and there already is a local
+               player
+       */
+       assert(!(player->isLocal() == true && getLocalPlayer() != NULL));
+
+       Environment::addPlayer(player);
+}
+
+LocalPlayer * ClientEnvironment::getLocalPlayer()
+{
+       for(core::list<Player*>::Iterator i = m_players.begin();
+                       i != m_players.end(); i++)
+       {
+               Player *player = *i;
+               if(player->isLocal())
+                       return (LocalPlayer*)player;
+       }
+       return NULL;
+}
+
+void ClientEnvironment::step(float dtime)
+{
+       DSTACK(__FUNCTION_NAME);
+
+       // Get some settings
+       bool free_move = g_settings.getBool("free_move");
+       bool footprints = g_settings.getBool("footprints");
+
+       {
+               //TimeTaker timer("Client m_map->timerUpdate()");
+               m_map->timerUpdate(dtime);
+       }
+       
+       // Get local player
+       LocalPlayer *lplayer = getLocalPlayer();
+       assert(lplayer);
+       // collision info queue
+       core::list<CollisionInfo> player_collisions;
+       
+       /*
+               Get the speed the player is going
+       */
+       f32 player_speed = 0.001; // just some small value
+       player_speed = lplayer->getSpeed().getLength();
+       
+       /*
+               Maximum position increment
+       */
+       //f32 position_max_increment = 0.05*BS;
+       f32 position_max_increment = 0.1*BS;
+
+       // Maximum time increment (for collision detection etc)
+       // time = distance / speed
+       f32 dtime_max_increment = position_max_increment / player_speed;
+       
+       // Maximum time increment is 10ms or lower
+       if(dtime_max_increment > 0.01)
+               dtime_max_increment = 0.01;
+       
+       // Don't allow overly huge dtime
+       if(dtime > 0.5)
+               dtime = 0.5;
+       
+       f32 dtime_downcount = dtime;
+
+       /*
+               Stuff that has a maximum time increment
+       */
+
+       u32 loopcount = 0;
+       do
+       {
+               loopcount++;
+
+               f32 dtime_part;
+               if(dtime_downcount > dtime_max_increment)
+               {
+                       dtime_part = dtime_max_increment;
+                       dtime_downcount -= dtime_part;
+               }
+               else
+               {
+                       dtime_part = dtime_downcount;
+                       /*
+                               Setting this to 0 (no -=dtime_part) disables an infinite loop
+                               when dtime_part is so small that dtime_downcount -= dtime_part
+                               does nothing
+                       */
+                       dtime_downcount = 0;
+               }
+               
+               /*
+                       Handle local player
+               */
+               
+               {
+                       v3f lplayerpos = lplayer->getPosition();
+                       
+                       // Apply physics
+                       if(free_move == false)
+                       {
+                               // Gravity
+                               v3f speed = lplayer->getSpeed();
+                               if(lplayer->swimming_up == false)
+                                       speed.Y -= 9.81 * BS * dtime_part * 2;
+
+                               // Water resistance
+                               if(lplayer->in_water_stable || lplayer->in_water)
+                               {
+                                       f32 max_down = 2.0*BS;
+                                       if(speed.Y < -max_down) speed.Y = -max_down;
+
+                                       f32 max = 2.5*BS;
+                                       if(speed.getLength() > max)
+                                       {
+                                               speed = speed / speed.getLength() * max;
+                                       }
+                               }
+
+                               lplayer->setSpeed(speed);
+                       }
+
+                       /*
+                               Move the lplayer.
+                               This also does collision detection.
+                       */
+                       lplayer->move(dtime_part, *m_map, position_max_increment,
+                                       &player_collisions);
+               }
+       }
+       while(dtime_downcount > 0.001);
+               
+       //std::cout<<"Looped "<<loopcount<<" times."<<std::endl;
+
+       for(core::list<CollisionInfo>::Iterator
+                       i = player_collisions.begin();
+                       i != player_collisions.end(); i++)
+       {
+               CollisionInfo &info = *i;
+               if(info.t == COLLISION_FALL)
+               {
+                       //f32 tolerance = BS*10; // 2 without damage
+                       f32 tolerance = BS*12; // 3 without damage
+                       f32 factor = 1;
+                       if(info.speed > tolerance)
+                       {
+                               f32 damage_f = (info.speed - tolerance)/BS*factor;
+                               u16 damage = (u16)(damage_f+0.5);
+                               if(lplayer->hp > damage)
+                                       lplayer->hp -= damage;
+                               else
+                                       lplayer->hp = 0;
+
+                               ClientEnvEvent event;
+                               event.type = CEE_PLAYER_DAMAGE;
+                               event.player_damage.amount = damage;
+                               m_client_event_queue.push_back(event);
+                       }
+               }
+       }
+       
+       /*
+               Stuff that can be done in an arbitarily large dtime
+       */
+       for(core::list<Player*>::Iterator i = m_players.begin();
+                       i != m_players.end(); i++)
+       {
+               Player *player = *i;
+               v3f playerpos = player->getPosition();
+               
+               /*
+                       Handle non-local players
+               */
+               if(player->isLocal() == false)
+               {
+                       // Move
+                       player->move(dtime, *m_map, 100*BS);
+
+                       // Update lighting on remote players on client
+                       u8 light = LIGHT_MAX;
+                       try{
+                               // Get node at head
+                               v3s16 p = floatToInt(playerpos + v3f(0,BS+BS/2,0), BS);
+                               MapNode n = m_map->getNode(p);
+                               light = n.getLightBlend(getDayNightRatio());
+                       }
+                       catch(InvalidPositionException &e) {}
+                       player->updateLight(light);
+               }
+               
+               /*
+                       Add footsteps to grass
+               */
+               if(footprints)
+               {
+                       // Get node that is at BS/4 under player
+                       v3s16 bottompos = floatToInt(playerpos + v3f(0,-BS/4,0), BS);
+                       try{
+                               MapNode n = m_map->getNode(bottompos);
+                               if(n.d == CONTENT_GRASS)
+                               {
+                                       n.d = CONTENT_GRASS_FOOTSTEPS;
+                                       m_map->setNode(bottompos, n);
+                                       // Update mesh on client
+                                       if(m_map->mapType() == MAPTYPE_CLIENT)
+                                       {
+                                               v3s16 p_blocks = getNodeBlockPos(bottompos);
+                                               MapBlock *b = m_map->getBlockNoCreate(p_blocks);
+                                               //b->updateMesh(getDayNightRatio());
+                                               b->setMeshExpired(true);
+                                       }
+                               }
+                       }
+                       catch(InvalidPositionException &e)
+                       {
+                       }
+               }
+       }
+       
+       /*
+               Step active objects and update lighting of them
+       */
+       
+       for(core::map<u16, ClientActiveObject*>::Iterator
+                       i = m_active_objects.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               ClientActiveObject* obj = i.getNode()->getValue();
+               // Step object
+               obj->step(dtime, this);
+               // Update lighting
+               //u8 light = LIGHT_MAX;
+               u8 light = 0;
+               try{
+                       // Get node at head
+                       v3s16 p = obj->getLightPosition();
+                       MapNode n = m_map->getNode(p);
+                       light = n.getLightBlend(getDayNightRatio());
+               }
+               catch(InvalidPositionException &e) {}
+               obj->updateLight(light);
+       }
+}
+
+void ClientEnvironment::updateMeshes(v3s16 blockpos)
+{
+       m_map->updateMeshes(blockpos, getDayNightRatio());
+}
+
+void ClientEnvironment::expireMeshes(bool only_daynight_diffed)
+{
+       m_map->expireMeshes(only_daynight_diffed);
+}
+
+ClientActiveObject* ClientEnvironment::getActiveObject(u16 id)
+{
+       core::map<u16, ClientActiveObject*>::Node *n;
+       n = m_active_objects.find(id);
+       if(n == NULL)
+               return NULL;
+       return n->getValue();
+}
+
+bool isFreeClientActiveObjectId(u16 id,
+               core::map<u16, ClientActiveObject*> &objects)
+{
+       if(id == 0)
+               return false;
+       
+       for(core::map<u16, ClientActiveObject*>::Iterator
+                       i = objects.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               if(i.getNode()->getKey() == id)
+                       return false;
+       }
+       return true;
+}
+
+u16 getFreeClientActiveObjectId(
+               core::map<u16, ClientActiveObject*> &objects)
+{
+       u16 new_id = 1;
+       for(;;)
+       {
+               if(isFreeClientActiveObjectId(new_id, objects))
+                       return new_id;
+               
+               if(new_id == 65535)
+                       return 0;
+
+               new_id++;
+       }
+}
+
+u16 ClientEnvironment::addActiveObject(ClientActiveObject *object)
+{
+       assert(object);
+       if(object->getId() == 0)
+       {
+               u16 new_id = getFreeClientActiveObjectId(m_active_objects);
+               if(new_id == 0)
+               {
+                       dstream<<"WARNING: ClientEnvironment::addActiveObject(): "
+                                       <<"no free ids available"<<std::endl;
+                       delete object;
+                       return 0;
+               }
+               object->setId(new_id);
+       }
+       if(isFreeClientActiveObjectId(object->getId(), m_active_objects) == false)
+       {
+               dstream<<"WARNING: ClientEnvironment::addActiveObject(): "
+                               <<"id is not free ("<<object->getId()<<")"<<std::endl;
+               delete object;
+               return 0;
+       }
+       dstream<<"INGO: ClientEnvironment::addActiveObject(): "
+                       <<"added (id="<<object->getId()<<")"<<std::endl;
+       m_active_objects.insert(object->getId(), object);
+       object->addToScene(m_smgr);
+       return object->getId();
+}
+
+void ClientEnvironment::addActiveObject(u16 id, u8 type,
+               const std::string &init_data)
+{
+       ClientActiveObject* obj = ClientActiveObject::create(type);
+       if(obj == NULL)
+       {
+               dstream<<"WARNING: ClientEnvironment::addActiveObject(): "
+                               <<"id="<<id<<" type="<<type<<": Couldn't create object"
+                               <<std::endl;
+               return;
+       }
+       
+       obj->setId(id);
+
+       addActiveObject(obj);
+
+       obj->initialize(init_data);
+}
+
+void ClientEnvironment::removeActiveObject(u16 id)
+{
+       dstream<<"ClientEnvironment::removeActiveObject(): "
+                       <<"id="<<id<<std::endl;
+       ClientActiveObject* obj = getActiveObject(id);
+       if(obj == NULL)
+       {
+               dstream<<"WARNING: ClientEnvironment::removeActiveObject(): "
+                               <<"id="<<id<<" not found"<<std::endl;
+               return;
+       }
+       obj->removeFromScene();
+       delete obj;
+       m_active_objects.remove(id);
+}
+
+void ClientEnvironment::processActiveObjectMessage(u16 id,
+               const std::string &data)
+{
+       ClientActiveObject* obj = getActiveObject(id);
+       if(obj == NULL)
+       {
+               dstream<<"WARNING: ClientEnvironment::processActiveObjectMessage():"
+                               <<" got message for id="<<id<<", which doesn't exist."
+                               <<std::endl;
+               return;
+       }
+       obj->processMessage(data);
+}
+
+/*
+       Callbacks for activeobjects
+*/
+
+void ClientEnvironment::damageLocalPlayer(u8 damage)
+{
+       LocalPlayer *lplayer = getLocalPlayer();
+       assert(lplayer);
+
+       if(lplayer->hp > damage)
+               lplayer->hp -= damage;
+       else
+               lplayer->hp = 0;
+
+       ClientEnvEvent event;
+       event.type = CEE_PLAYER_DAMAGE;
+       event.player_damage.amount = damage;
+       m_client_event_queue.push_back(event);
+}
+
+/*
+       Client likes to call these
+*/
+       
+void ClientEnvironment::getActiveObjects(v3f origin, f32 max_d,
+               core::array<DistanceSortedActiveObject> &dest)
+{
+       for(core::map<u16, ClientActiveObject*>::Iterator
+                       i = m_active_objects.getIterator();
+                       i.atEnd()==false; i++)
+       {
+               ClientActiveObject* obj = i.getNode()->getValue();
+
+               f32 d = (obj->getPosition() - origin).getLength();
+
+               if(d > max_d)
+                       continue;
+
+               DistanceSortedActiveObject dso(obj, d);
+
+               dest.push_back(dso);
+       }
+}
+
+ClientEnvEvent ClientEnvironment::getClientEvent()
+{
+       if(m_client_event_queue.size() == 0)
+       {
+               ClientEnvEvent event;
+               event.type = CEE_NONE;
+               return event;
+       }
+       return m_client_event_queue.pop_front();
+}
+
+#endif // #ifndef SERVER
+