Fix Lua panic when error() message is not a string
[oweals/minetest.git] / src / server.cpp
index dad8f17121687e239eaf3ec1d88d5abeea7acd59..6ecbd70973d58b5163b0336f895584bd356343de 100644 (file)
@@ -34,8 +34,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "version.h"
 #include "filesys.h"
 #include "mapblock.h"
-#include "serverobject.h"
-#include "genericobject.h"
+#include "server/serveractiveobject.h"
 #include "settings.h"
 #include "profiler.h"
 #include "log.h"
@@ -48,7 +47,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "mapgen/mg_biome.h"
 #include "content_mapnode.h"
 #include "content_nodemeta.h"
-#include "content_sao.h"
 #include "content/mods.h"
 #include "modchannels.h"
 #include "serverlist.h"
@@ -65,6 +63,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "chatmessage.h"
 #include "chat_interface.h"
 #include "remoteplayer.h"
+#include "server/player_sao.h"
+#include "server/serverinventorymgr.h"
+#include "translation.h"
 
 class ClientNotFoundException : public BaseException
 {
@@ -93,6 +94,15 @@ void *ServerThread::run()
 {
        BEGIN_DEBUG_EXCEPTION_HANDLER
 
+       /*
+        * The real business of the server happens on the ServerThread.
+        * How this works:
+        * AsyncRunStep() runs an actual server step as soon as enough time has
+        * passed (dedicated_server_loop keeps track of that).
+        * Receive() blocks at least(!) 30ms waiting for a packet (so this loop
+        * doesn't busy wait) and will process any remaining packets.
+        */
+
        m_server->AsyncRunStep(true);
 
        while (!stopRequested()) {
@@ -101,7 +111,6 @@ void *ServerThread::run()
 
                        m_server->Receive();
 
-               } catch (con::NoIncomingDataException &e) {
                } catch (con::PeerNotFoundException &e) {
                        infostream<<"Server: PeerNotFoundException"<<std::endl;
                } catch (ClientNotFoundException &e) {
@@ -139,7 +148,60 @@ v3f ServerSoundParams::getPos(ServerEnvironment *env, bool *pos_exists) const
        return v3f(0,0,0);
 }
 
+void Server::ShutdownState::reset()
+{
+       m_timer = 0.0f;
+       message.clear();
+       should_reconnect = false;
+       is_requested = false;
+}
+
+void Server::ShutdownState::trigger(float delay, const std::string &msg, bool reconnect)
+{
+       m_timer = delay;
+       message = msg;
+       should_reconnect = reconnect;
+}
+
+void Server::ShutdownState::tick(float dtime, Server *server)
+{
+       if (m_timer <= 0.0f)
+               return;
+
+       // Timed shutdown
+       static const float shutdown_msg_times[] =
+       {
+               1, 2, 3, 4, 5, 10, 20, 40, 60, 120, 180, 300, 600, 1200, 1800, 3600
+       };
+
+       // Automated messages
+       if (m_timer < shutdown_msg_times[ARRLEN(shutdown_msg_times) - 1]) {
+               for (float t : shutdown_msg_times) {
+                       // If shutdown timer matches an automessage, shot it
+                       if (m_timer > t && m_timer - dtime < t) {
+                               std::wstring periodicMsg = getShutdownTimerMessage();
 
+                               infostream << wide_to_utf8(periodicMsg).c_str() << std::endl;
+                               server->SendChatMessage(PEER_ID_INEXISTENT, periodicMsg);
+                               break;
+                       }
+               }
+       }
+
+       m_timer -= dtime;
+       if (m_timer < 0.0f) {
+               m_timer = 0.0f;
+               is_requested = true;
+       }
+}
+
+std::wstring Server::ShutdownState::getShutdownTimerMessage() const
+{
+       std::wstringstream ws;
+       ws << L"*** Server shutting down in "
+               << duration_to_string(myround(m_timer)).c_str() << ".";
+       return ws.str();
+}
 
 /*
        Server
@@ -167,34 +229,136 @@ Server::Server(
        m_itemdef(createItemDefManager()),
        m_nodedef(createNodeDefManager()),
        m_craftdef(createCraftDefManager()),
-       m_uptime(0),
+       m_thread(new ServerThread(this)),
        m_clients(m_con),
        m_admin_chat(iface),
        m_modchannel_mgr(new ModChannelMgr())
 {
-       m_lag = g_settings->getFloat("dedicated_server_step");
-
-       if (path_world.empty())
+       if (m_path_world.empty())
                throw ServerError("Supplied empty world path");
 
-       if(!gamespec.isValid())
+       if (!gamespec.isValid())
                throw ServerError("Supplied invalid gamespec");
 
-       infostream<<"Server created for gameid \""<<m_gamespec.id<<"\"";
-       if(m_simple_singleplayer_mode)
-               infostream<<" in simple singleplayer mode"<<std::endl;
+#if USE_PROMETHEUS
+       m_metrics_backend = std::unique_ptr<MetricsBackend>(createPrometheusMetricsBackend());
+#else
+       m_metrics_backend = std::unique_ptr<MetricsBackend>(new MetricsBackend());
+#endif
+
+       m_uptime_counter = m_metrics_backend->addCounter("minetest_core_server_uptime", "Server uptime (in seconds)");
+       m_player_gauge = m_metrics_backend->addGauge("minetest_core_player_number", "Number of connected players");
+
+       m_timeofday_gauge = m_metrics_backend->addGauge(
+                       "minetest_core_timeofday",
+                       "Time of day value");
+
+       m_lag_gauge = m_metrics_backend->addGauge(
+                       "minetest_core_latency",
+                       "Latency value (in seconds)");
+
+       m_aom_buffer_counter = m_metrics_backend->addCounter(
+                       "minetest_core_aom_generated_count",
+                       "Number of active object messages generated");
+
+       m_packet_recv_counter = m_metrics_backend->addCounter(
+                       "minetest_core_server_packet_recv",
+                       "Processable packets received");
+
+       m_packet_recv_processed_counter = m_metrics_backend->addCounter(
+                       "minetest_core_server_packet_recv_processed",
+                       "Valid received packets processed");
+
+       m_lag_gauge->set(g_settings->getFloat("dedicated_server_step"));
+}
+
+Server::~Server()
+{
+
+       // Send shutdown message
+       SendChatMessage(PEER_ID_INEXISTENT, ChatMessage(CHATMESSAGE_TYPE_ANNOUNCE,
+                       L"*** Server shutting down"));
+
+       if (m_env) {
+               MutexAutoLock envlock(m_env_mutex);
+
+               infostream << "Server: Saving players" << std::endl;
+               m_env->saveLoadedPlayers();
+
+               infostream << "Server: Kicking players" << std::endl;
+               std::string kick_msg;
+               bool reconnect = false;
+               if (isShutdownRequested()) {
+                       reconnect = m_shutdown_state.should_reconnect;
+                       kick_msg = m_shutdown_state.message;
+               }
+               if (kick_msg.empty()) {
+                       kick_msg = g_settings->get("kick_msg_shutdown");
+               }
+               m_env->saveLoadedPlayers(true);
+               m_env->kickAllPlayers(SERVER_ACCESSDENIED_SHUTDOWN,
+                       kick_msg, reconnect);
+       }
+
+       actionstream << "Server: Shutting down" << std::endl;
+
+       // Do this before stopping the server in case mapgen callbacks need to access
+       // server-controlled resources (like ModStorages). Also do them before
+       // shutdown callbacks since they may modify state that is finalized in a
+       // callback.
+       if (m_emerge)
+               m_emerge->stopThreads();
+
+       if (m_env) {
+               MutexAutoLock envlock(m_env_mutex);
+
+               // Execute script shutdown hooks
+               infostream << "Executing shutdown hooks" << std::endl;
+               m_script->on_shutdown();
+
+               infostream << "Server: Saving environment metadata" << std::endl;
+               m_env->saveMeta();
+       }
+
+       // Stop threads
+       if (m_thread) {
+               stop();
+               delete m_thread;
+       }
+
+       // Delete things in the reverse order of creation
+       delete m_emerge;
+       delete m_env;
+       delete m_rollback;
+       delete m_banmanager;
+       delete m_itemdef;
+       delete m_nodedef;
+       delete m_craftdef;
+
+       // Deinitialize scripting
+       infostream << "Server: Deinitializing scripting" << std::endl;
+       delete m_script;
+
+       while (!m_unsent_map_edit_queue.empty()) {
+               delete m_unsent_map_edit_queue.front();
+               m_unsent_map_edit_queue.pop();
+       }
+}
+
+void Server::init()
+{
+       infostream << "Server created for gameid \"" << m_gamespec.id << "\"";
+       if (m_simple_singleplayer_mode)
+               infostream << " in simple singleplayer mode" << std::endl;
        else
-               infostream<<std::endl;
-       infostream<<"- world:  "<<m_path_world<<std::endl;
-       infostream<<"- game:   "<<m_gamespec.path<<std::endl;
+               infostream << std::endl;
+       infostream << "- world:  " << m_path_world << std::endl;
+       infostream << "- game:   " << m_gamespec.path << std::endl;
 
        // Create world if it doesn't exist
-       if(!loadGameConfAndInitWorld(m_path_world, m_gamespec))
+       if (!loadGameConfAndInitWorld(m_path_world, m_gamespec))
                throw ServerError("Failed to initialize world");
 
-       // Create server thread
-       m_thread = new ServerThread(this);
-
        // Create emerge manager
        m_emerge = new EmergeManager(this);
 
@@ -202,8 +366,7 @@ Server::Server(
        std::string ban_path = m_path_world + DIR_DELIM "ipban.txt";
        m_banmanager = new BanManager(ban_path);
 
-       m_modmgr = std::unique_ptr<ServerModManager>(new ServerModManager(
-               m_path_world));
+       m_modmgr = std::unique_ptr<ServerModManager>(new ServerModManager(m_path_world));
        std::vector<ModSpec> unsatisfied_mods = m_modmgr->getUnsatisfiedMods();
        // complain about mods with unsatisfied dependencies
        if (!m_modmgr->isConsistent()) {
@@ -214,13 +377,16 @@ Server::Server(
        MutexAutoLock envlock(m_env_mutex);
 
        // Create the Map (loads map_meta.txt, overriding configured mapgen params)
-       ServerMap *servermap = new ServerMap(path_world, this, m_emerge);
+       ServerMap *servermap = new ServerMap(m_path_world, this, m_emerge, m_metrics_backend.get());
 
        // Initialize scripting
-       infostream<<"Server: Initializing Lua"<<std::endl;
+       infostream << "Server: Initializing Lua" << std::endl;
 
        m_script = new ServerScripting(this);
 
+       // Must be created before mod loading because we have some inventory creation
+       m_inventory_mgr = std::unique_ptr<ServerInventoryManager>(new ServerInventoryManager());
+
        m_script->loadMod(getBuiltinLuaPath() + DIR_DELIM "init.lua", BUILTIN_MOD_NAME);
 
        m_modmgr->loadMods(m_script);
@@ -235,16 +401,19 @@ Server::Server(
        std::vector<std::string> paths;
        fs::GetRecursiveDirs(paths, g_settings->get("texture_path"));
        fs::GetRecursiveDirs(paths, m_gamespec.path + DIR_DELIM + "textures");
-       for (const std::string &path : paths)
-               m_nodedef->applyTextureOverrides(path + DIR_DELIM + "override.txt");
+       for (const std::string &path : paths) {
+               TextureOverrideSource override_source(path + DIR_DELIM + "override.txt");
+               m_nodedef->applyTextureOverrides(override_source.getNodeTileOverrides());
+               m_itemdef->applyTextureOverrides(override_source.getItemTextureOverrides());
+       }
 
        m_nodedef->setNodeRegistrationStatus(true);
 
        // Perform pending node name resolutions
        m_nodedef->runNodeResolveCallbacks();
 
-       // unmap node names for connected nodeboxes
-       m_nodedef->mapNodeboxConnections();
+       // unmap node names in cross-references
+       m_nodedef->resolveCrossrefs();
 
        // init the recipe hashes to speed up crafting
        m_craftdef->initHashes(this);
@@ -252,6 +421,7 @@ Server::Server(
        // Initialize Environment
        m_env = new ServerEnvironment(servermap, m_script, this, m_path_world);
 
+       m_inventory_mgr->setEnv(m_env);
        m_clients.setEnv(m_env);
 
        if (!servermap->settings_mgr.makeMapgenParams())
@@ -273,82 +443,18 @@ Server::Server(
 
        m_env->loadMeta();
 
+       // Those settings can be overwritten in world.mt, they are
+       // intended to be cached after environment loading.
        m_liquid_transform_every = g_settings->getFloat("liquid_update");
        m_max_chatmessage_length = g_settings->getU16("chat_message_max_size");
-       m_csm_flavour_limits = g_settings->getU64("csm_flavour_limits");
-       m_csm_noderange_limit = g_settings->getU32("csm_flavour_noderange_limit");
-}
-
-Server::~Server()
-{
-       infostream << "Server destructing" << std::endl;
-
-       // Send shutdown message
-       SendChatMessage(PEER_ID_INEXISTENT, ChatMessage(CHATMESSAGE_TYPE_ANNOUNCE,
-                       L"*** Server shutting down"));
-
-       {
-               MutexAutoLock envlock(m_env_mutex);
-
-               infostream << "Server: Saving players" << std::endl;
-               m_env->saveLoadedPlayers();
-
-               infostream << "Server: Kicking players" << std::endl;
-               std::string kick_msg;
-               bool reconnect = false;
-               if (getShutdownRequested()) {
-                       reconnect = m_shutdown_ask_reconnect;
-                       kick_msg = m_shutdown_msg;
-               }
-               if (kick_msg.empty()) {
-                       kick_msg = g_settings->get("kick_msg_shutdown");
-               }
-               m_env->kickAllPlayers(SERVER_ACCESSDENIED_SHUTDOWN,
-                       kick_msg, reconnect);
-       }
-
-       // Do this before stopping the server in case mapgen callbacks need to access
-       // server-controlled resources (like ModStorages). Also do them before
-       // shutdown callbacks since they may modify state that is finalized in a
-       // callback.
-       m_emerge->stopThreads();
-
-       {
-               MutexAutoLock envlock(m_env_mutex);
-
-               // Execute script shutdown hooks
-               infostream << "Executing shutdown hooks" << std::endl;
-               m_script->on_shutdown();
-
-               infostream << "Server: Saving environment metadata" << std::endl;
-               m_env->saveMeta();
-       }
-
-       // Stop threads
-       stop();
-       delete m_thread;
-
-       // Delete things in the reverse order of creation
-       delete m_emerge;
-       delete m_env;
-       delete m_rollback;
-       delete m_banmanager;
-       delete m_itemdef;
-       delete m_nodedef;
-       delete m_craftdef;
-
-       // Deinitialize scripting
-       infostream << "Server: Deinitializing scripting" << std::endl;
-       delete m_script;
-
-       // Delete detached inventories
-       for (auto &detached_inventory : m_detached_inventories) {
-               delete detached_inventory.second;
-       }
+       m_csm_restriction_flags = g_settings->getU64("csm_restriction_flags");
+       m_csm_restriction_noderange = g_settings->getU32("csm_restriction_noderange");
 }
 
 void Server::start()
 {
+       init();
+
        infostream << "Starting server on " << m_bind_addr.serializeString()
                        << "..." << std::endl;
 
@@ -412,7 +518,6 @@ void Server::step(float dtime)
 
 void Server::AsyncRunStep(bool initial_step)
 {
-       g_profiler->add("Server::AsyncRunStep (num)", 1);
 
        float dtime;
        {
@@ -428,10 +533,7 @@ void Server::AsyncRunStep(bool initial_step)
        if((dtime < 0.001) && !initial_step)
                return;
 
-       g_profiler->add("Server::AsyncRunStep with dtime (num)", 1);
-
-       //infostream<<"Server steps "<<dtime<<std::endl;
-       //infostream<<"Server::AsyncRunStep(): dtime="<<dtime<<std::endl;
+       ScopeProfiler sp(g_profiler, "Server::AsyncRunStep()", SPT_AVG);
 
        {
                MutexAutoLock lock1(m_step_dtime_mutex);
@@ -441,9 +543,7 @@ void Server::AsyncRunStep(bool initial_step)
        /*
                Update uptime
        */
-       {
-               m_uptime.set(m_uptime.get() + dtime);
-       }
+       m_uptime_counter->increment(dtime);
 
        handlePeerChanges();
 
@@ -457,11 +557,13 @@ void Server::AsyncRunStep(bool initial_step)
        */
 
        m_time_of_day_send_timer -= dtime;
-       if(m_time_of_day_send_timer < 0.0) {
+       if (m_time_of_day_send_timer < 0.0) {
                m_time_of_day_send_timer = g_settings->getFloat("time_send_interval");
                u16 time = m_env->getTimeOfDay();
                float time_speed = g_settings->getFloat("time_speed");
                SendTimeOfDay(PEER_ID_INEXISTENT, time, time_speed);
+
+               m_timeofday_gauge->set(time);
        }
 
        {
@@ -477,8 +579,6 @@ void Server::AsyncRunStep(bool initial_step)
                }
                m_env->reportMaxLagEstimate(max_lag);
                // Step environment
-               ScopeProfiler sp(g_profiler, "SEnv step");
-               ScopeProfiler sp2(g_profiler, "SEnv step avg", SPT_AVG);
                m_env->step(dtime);
        }
 
@@ -535,7 +635,7 @@ void Server::AsyncRunStep(bool initial_step)
        }
        m_clients.step(dtime);
 
-       m_lag += (m_lag > dtime ? -1 : 1) * dtime/100;
+       m_lag_gauge->increment((m_lag_gauge->get() > dtime ? -1 : 1) * dtime/100);
 #if USE_CURL
        // send masterserver announce
        {
@@ -546,9 +646,9 @@ void Server::AsyncRunStep(bool initial_step)
                                                ServerList::AA_START,
                                        m_bind_addr.getPort(),
                                        m_clients.getPlayerNames(),
-                                       m_uptime.get(),
+                                       m_uptime_counter->get(),
                                        m_env->getGameTime(),
-                                       m_lag,
+                                       m_lag_gauge->get(),
                                        m_gamespec.id,
                                        Mapgen::getMapgenName(m_emerge->mgparams->mgtype),
                                        m_modmgr->getMods(),
@@ -568,134 +668,41 @@ void Server::AsyncRunStep(bool initial_step)
 
                m_clients.lock();
                const RemoteClientMap &clients = m_clients.getClientList();
-               ScopeProfiler sp(g_profiler, "Server: checking added and deleted objs");
-
-               // Radius inside which objects are active
-               static thread_local const s16 radius =
-                       g_settings->getS16("active_object_send_range_blocks") * MAP_BLOCKSIZE;
-
-               // Radius inside which players are active
-               static thread_local const bool is_transfer_limited =
-                       g_settings->exists("unlimited_player_transfer_distance") &&
-                       !g_settings->getBool("unlimited_player_transfer_distance");
-               static thread_local const s16 player_transfer_dist =
-                       g_settings->getS16("player_transfer_distance") * MAP_BLOCKSIZE;
-               s16 player_radius = player_transfer_dist;
-               if (player_radius == 0 && is_transfer_limited)
-                       player_radius = radius;
+               ScopeProfiler sp(g_profiler, "Server: update objects within range");
 
+               m_player_gauge->set(clients.size());
                for (const auto &client_it : clients) {
                        RemoteClient *client = client_it.second;
 
-                       // If definitions and textures have not been sent, don't
-                       // send objects either
                        if (client->getState() < CS_DefinitionsSent)
                                continue;
 
-                       RemotePlayer *player = m_env->getPlayer(client->peer_id);
-                       if (!player) {
-                               // This can happen if the client timeouts somehow
+                       // This can happen if the client times out somehow
+                       if (!m_env->getPlayer(client->peer_id))
                                continue;
-                       }
 
-                       PlayerSAO *playersao = player->getPlayerSAO();
+                       PlayerSAO *playersao = getPlayerSAO(client->peer_id);
                        if (!playersao)
                                continue;
 
-                       s16 my_radius = MYMIN(radius, playersao->getWantedRange() * MAP_BLOCKSIZE);
-                       if (my_radius <= 0) my_radius = radius;
-                       //infostream << "Server: Active Radius " << my_radius << std::endl;
-
-                       std::queue<u16> removed_objects;
-                       std::queue<u16> added_objects;
-                       m_env->getRemovedActiveObjects(playersao, my_radius, player_radius,
-                                       client->m_known_objects, removed_objects);
-                       m_env->getAddedActiveObjects(playersao, my_radius, player_radius,
-                                       client->m_known_objects, added_objects);
-
-                       // Ignore if nothing happened
-                       if (removed_objects.empty() && added_objects.empty()) {
-                               continue;
-                       }
-
-                       std::string data_buffer;
-
-                       char buf[4];
-
-                       // Handle removed objects
-                       writeU16((u8*)buf, removed_objects.size());
-                       data_buffer.append(buf, 2);
-                       while (!removed_objects.empty()) {
-                               // Get object
-                               u16 id = removed_objects.front();
-                               ServerActiveObject* obj = m_env->getActiveObject(id);
-
-                               // Add to data buffer for sending
-                               writeU16((u8*)buf, id);
-                               data_buffer.append(buf, 2);
-
-                               // Remove from known objects
-                               client->m_known_objects.erase(id);
-
-                               if(obj && obj->m_known_by_count > 0)
-                                       obj->m_known_by_count--;
-                               removed_objects.pop();
-                       }
-
-                       // Handle added objects
-                       writeU16((u8*)buf, added_objects.size());
-                       data_buffer.append(buf, 2);
-                       while (!added_objects.empty()) {
-                               // Get object
-                               u16 id = added_objects.front();
-                               ServerActiveObject* obj = m_env->getActiveObject(id);
-
-                               // Get object type
-                               u8 type = ACTIVEOBJECT_TYPE_INVALID;
-                               if (!obj)
-                                       warningstream << FUNCTION_NAME << ": NULL object" << std::endl;
-                               else
-                                       type = obj->getSendType();
-
-                               // Add to data buffer for sending
-                               writeU16((u8*)buf, id);
-                               data_buffer.append(buf, 2);
-                               writeU8((u8*)buf, type);
-                               data_buffer.append(buf, 1);
-
-                               if(obj)
-                                       data_buffer.append(serializeLongString(
-                                                       obj->getClientInitializationData(client->net_proto_version)));
-                               else
-                                       data_buffer.append(serializeLongString(""));
-
-                               // Add to known objects
-                               client->m_known_objects.insert(id);
-
-                               if(obj)
-                                       obj->m_known_by_count++;
-
-                               added_objects.pop();
-                       }
-
-                       u32 pktSize = SendActiveObjectRemoveAdd(client->peer_id, data_buffer);
-                       verbosestream << "Server: Sent object remove/add: "
-                                       << removed_objects.size() << " removed, "
-                                       << added_objects.size() << " added, "
-                                       << "packet size is " << pktSize << std::endl;
+                       SendActiveObjectRemoveAdd(client, playersao);
                }
                m_clients.unlock();
 
+               // Save mod storages if modified
                m_mod_storage_save_timer -= dtime;
                if (m_mod_storage_save_timer <= 0.0f) {
-                       infostream << "Saving registered mod storages." << std::endl;
                        m_mod_storage_save_timer = g_settings->getFloat("server_map_save_interval");
+                       int n = 0;
                        for (std::unordered_map<std::string, ModMetadata *>::const_iterator
                                it = m_mod_storages.begin(); it != m_mod_storages.end(); ++it) {
                                if (it->second->isModified()) {
                                        it->second->save(getModStoragePath());
+                                       n++;
                                }
                        }
+                       if (n > 0)
+                               infostream << "Saved " << n << " modified mod storages." << std::endl;
                }
        }
 
@@ -704,62 +711,75 @@ void Server::AsyncRunStep(bool initial_step)
        */
        {
                MutexAutoLock envlock(m_env_mutex);
-               ScopeProfiler sp(g_profiler, "Server: sending object messages");
+               ScopeProfiler sp(g_profiler, "Server: send SAO messages");
 
                // Key = object id
                // Value = data sent by object
                std::unordered_map<u16, std::vector<ActiveObjectMessage>*> buffered_messages;
 
                // Get active object messages from environment
+               ActiveObjectMessage aom(0);
+               u32 aom_count = 0;
                for(;;) {
-                       ActiveObjectMessage aom = m_env->getActiveObjectMessage();
-                       if (aom.id == 0)
+                       if (!m_env->getActiveObjectMessage(&aom))
                                break;
 
                        std::vector<ActiveObjectMessage>* message_list = nullptr;
-                       std::unordered_map<u16, std::vector<ActiveObjectMessage>* >::iterator n;
-                       n = buffered_messages.find(aom.id);
+                       auto n = buffered_messages.find(aom.id);
                        if (n == buffered_messages.end()) {
                                message_list = new std::vector<ActiveObjectMessage>;
                                buffered_messages[aom.id] = message_list;
-                       }
-                       else {
+                       } else {
                                message_list = n->second;
                        }
-                       message_list->push_back(aom);
+                       message_list->push_back(std::move(aom));
+                       aom_count++;
                }
 
+               m_aom_buffer_counter->increment(aom_count);
+
                m_clients.lock();
                const RemoteClientMap &clients = m_clients.getClientList();
                // Route data to every client
+               std::string reliable_data, unreliable_data;
                for (const auto &client_it : clients) {
+                       reliable_data.clear();
+                       unreliable_data.clear();
                        RemoteClient *client = client_it.second;
-                       std::string reliable_data;
-                       std::string unreliable_data;
+                       PlayerSAO *player = getPlayerSAO(client->peer_id);
                        // Go through all objects in message buffer
                        for (const auto &buffered_message : buffered_messages) {
-                               // If object is not known by client, skip it
+                               // If object does not exist or is not known by client, skip it
                                u16 id = buffered_message.first;
-                               if (client->m_known_objects.find(id) == client->m_known_objects.end())
+                               ServerActiveObject *sao = m_env->getActiveObject(id);
+                               if (!sao || client->m_known_objects.find(id) == client->m_known_objects.end())
                                        continue;
 
                                // Get message list of object
                                std::vector<ActiveObjectMessage>* list = buffered_message.second;
                                // Go through every message
                                for (const ActiveObjectMessage &aom : *list) {
-                                       // Compose the full new data with header
-                                       std::string new_data;
-                                       // Add object id
-                                       char buf[2];
-                                       writeU16((u8*)&buf[0], aom.id);
-                                       new_data.append(buf, 2);
-                                       // Add data
-                                       new_data += serializeString(aom.datastring);
-                                       // Add data to buffer
-                                       if (aom.reliable)
-                                               reliable_data += new_data;
-                                       else
-                                               unreliable_data += new_data;
+                                       // Send position updates to players who do not see the attachment
+                                       if (aom.datastring[0] == AO_CMD_UPDATE_POSITION) {
+                                               if (sao->getId() == player->getId())
+                                                       continue;
+
+                                               // Do not send position updates for attached players
+                                               // as long the parent is known to the client
+                                               ServerActiveObject *parent = sao->getParent();
+                                               if (parent && client->m_known_objects.find(parent->getId()) !=
+                                                               client->m_known_objects.end())
+                                                       continue;
+                                       }
+
+                                       // Add full new data to appropriate buffer
+                                       std::string &buffer = aom.reliable ? reliable_data : unreliable_data;
+                                       char idbuf[2];
+                                       writeU16((u8*) idbuf, aom.id);
+                                       // u16 id
+                                       // std::string data
+                                       buffer.append(idbuf, sizeof(idbuf));
+                                       buffer.append(serializeString(aom.datastring));
                                }
                        }
                        /*
@@ -802,6 +822,8 @@ void Server::AsyncRunStep(bool initial_step)
                // We'll log the amount of each
                Profiler prof;
 
+               std::list<v3s16> node_meta_updates;
+
                while (!m_unsent_map_edit_queue.empty()) {
                        MapEditEvent* event = m_unsent_map_edit_queue.front();
                        m_unsent_map_edit_queue.pop();
@@ -809,28 +831,37 @@ void Server::AsyncRunStep(bool initial_step)
                        // Players far away from the change are stored here.
                        // Instead of sending the changes, MapBlocks are set not sent
                        // for them.
-                       std::vector<u16> far_players;
+                       std::unordered_set<u16> far_players;
 
                        switch (event->type) {
                        case MEET_ADDNODE:
                        case MEET_SWAPNODE:
                                prof.add("MEET_ADDNODE", 1);
-                               sendAddNode(event->p, event->n, event->already_known_by_peer,
-                                               &far_players, disable_single_change_sending ? 5 : 30,
+                               sendAddNode(event->p, event->n, &far_players,
+                                               disable_single_change_sending ? 5 : 30,
                                                event->type == MEET_ADDNODE);
                                break;
                        case MEET_REMOVENODE:
                                prof.add("MEET_REMOVENODE", 1);
-                               sendRemoveNode(event->p, event->already_known_by_peer,
-                                               &far_players, disable_single_change_sending ? 5 : 30);
+                               sendRemoveNode(event->p, &far_players,
+                                               disable_single_change_sending ? 5 : 30);
                                break;
-                       case MEET_BLOCK_NODE_METADATA_CHANGED:
-                               infostream << "Server: MEET_BLOCK_NODE_METADATA_CHANGED" << std::endl;
-                                               prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
-                                               m_clients.markBlockposAsNotSent(event->p);
+                       case MEET_BLOCK_NODE_METADATA_CHANGED: {
+                               prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
+                               if (!event->is_private_change) {
+                                       // Don't send the change yet. Collect them to eliminate dupes.
+                                       node_meta_updates.remove(event->p);
+                                       node_meta_updates.push_back(event->p);
+                               }
+
+                               if (MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(
+                                               getNodeBlockPos(event->p))) {
+                                       block->raiseModified(MOD_STATE_WRITE_NEEDED,
+                                               MOD_REASON_REPORT_META_CHANGE);
+                               }
                                break;
+                       }
                        case MEET_OTHER:
-                               infostream << "Server: MEET_OTHER" << std::endl;
                                prof.add("MEET_OTHER", 1);
                                for (const v3s16 &modified_block : event->modified_blocks) {
                                        m_clients.markBlockposAsNotSent(modified_block);
@@ -872,6 +903,9 @@ void Server::AsyncRunStep(bool initial_step)
                        prof.print(verbosestream);
                }
 
+               // Send all metadata updates
+               if (node_meta_updates.size())
+                       sendMetadataChanged(node_meta_updates);
        }
 
        /*
@@ -898,7 +932,7 @@ void Server::AsyncRunStep(bool initial_step)
                        counter = 0.0;
                        MutexAutoLock lock(m_env_mutex);
 
-                       ScopeProfiler sp(g_profiler, "Server: saving stuff");
+                       ScopeProfiler sp(g_profiler, "Server: map saving (sum)");
 
                        // Save ban file
                        if (m_banmanager->isModified()) {
@@ -916,60 +950,50 @@ void Server::AsyncRunStep(bool initial_step)
                }
        }
 
-       // Timed shutdown
-       static const float shutdown_msg_times[] =
-       {
-               1, 2, 3, 4, 5, 10, 15, 20, 25, 30, 45, 60, 120, 180, 300, 600, 1200, 1800, 3600
-       };
-
-       if (m_shutdown_timer > 0.0f) {
-               // Automated messages
-               if (m_shutdown_timer < shutdown_msg_times[ARRLEN(shutdown_msg_times) - 1]) {
-                       for (u16 i = 0; i < ARRLEN(shutdown_msg_times) - 1; i++) {
-                               // If shutdown timer matches an automessage, shot it
-                               if (m_shutdown_timer > shutdown_msg_times[i] &&
-                                       m_shutdown_timer - dtime < shutdown_msg_times[i]) {
-                                       std::wstringstream ws;
-
-                                       ws << L"*** Server shutting down in "
-                                               << duration_to_string(myround(m_shutdown_timer - dtime)).c_str()
-                                               << ".";
-
-                                       infostream << wide_to_utf8(ws.str()).c_str() << std::endl;
-                                       SendChatMessage(PEER_ID_INEXISTENT, ws.str());
-                                       break;
-                               }
-                       }
-               }
-
-               m_shutdown_timer -= dtime;
-               if (m_shutdown_timer < 0.0f) {
-                       m_shutdown_timer = 0.0f;
-                       m_shutdown_requested = true;
-               }
-       }
+       m_shutdown_state.tick(dtime, this);
 }
 
 void Server::Receive()
 {
+       NetworkPacket pkt;
        session_t peer_id;
-       try {
-               NetworkPacket pkt;
-               m_con->Receive(&pkt);
-               peer_id = pkt.getPeerId();
-               ProcessData(&pkt);
-       } catch (const con::InvalidIncomingDataException &e) {
-               infostream << "Server::Receive(): InvalidIncomingDataException: what()="
-                               << e.what() << std::endl;
-       } catch (const SerializationError &e) {
-               infostream << "Server::Receive(): SerializationError: what()="
-                               << e.what() << std::endl;
-       } catch (const ClientStateError &e) {
-               errorstream << "ProcessData: peer=" << peer_id << e.what() << std::endl;
-               DenyAccess_Legacy(peer_id, L"Your client sent something server didn't expect."
-                               L"Try reconnecting or updating your client");
-       } catch (const con::PeerNotFoundException &e) {
-               // Do nothing
+       bool first = true;
+       for (;;) {
+               pkt.clear();
+               peer_id = 0;
+               try {
+                       /*
+                               In the first iteration *wait* for a packet, afterwards process
+                               all packets that are immediately available (no waiting).
+                       */
+                       if (first) {
+                               m_con->Receive(&pkt);
+                               first = false;
+                       } else {
+                               if (!m_con->TryReceive(&pkt))
+                                       return;
+                       }
+
+                       peer_id = pkt.getPeerId();
+                       m_packet_recv_counter->increment();
+                       ProcessData(&pkt);
+                       m_packet_recv_processed_counter->increment();
+               } catch (const con::InvalidIncomingDataException &e) {
+                       infostream << "Server::Receive(): InvalidIncomingDataException: what()="
+                                       << e.what() << std::endl;
+               } catch (const SerializationError &e) {
+                       infostream << "Server::Receive(): SerializationError: what()="
+                                       << e.what() << std::endl;
+               } catch (const ClientStateError &e) {
+                       errorstream << "ProcessData: peer=" << peer_id << " what()="
+                                        << e.what() << std::endl;
+                       DenyAccess_Legacy(peer_id, L"Your client sent something server didn't expect."
+                                       L"Try reconnecting or updating your client");
+               } catch (const con::PeerNotFoundException &e) {
+                       // Do nothing
+               } catch (const con::NoIncomingDataException &e) {
+                       return;
+               }
        }
 }
 
@@ -1020,7 +1044,7 @@ PlayerSAO* Server::StageTwoClientInit(session_t peer_id)
        SendPlayerInventoryFormspec(peer_id);
 
        // Send inventory
-       SendInventory(playersao);
+       SendInventory(playersao, false);
 
        // Send HP or death screen
        if (playersao->isDead())
@@ -1032,21 +1056,15 @@ PlayerSAO* Server::StageTwoClientInit(session_t peer_id)
        // Send Breath
        SendPlayerBreath(playersao);
 
-       // Note things in chat if not in simple singleplayer mode
-       if (!m_simple_singleplayer_mode && g_settings->getBool("show_statusline_on_connect")) {
-               // Send information about server to player in chat
-               SendChatMessage(peer_id, ChatMessage(CHATMESSAGE_TYPE_SYSTEM, getStatusString()));
-       }
-       Address addr = getPeerAddress(player->getPeerId());
-       std::string ip_str = addr.serializeString();
-       actionstream<<player->getName() <<" [" << ip_str << "] joins game. " << std::endl;
        /*
                Print out action
        */
        {
+               Address addr = getPeerAddress(player->getPeerId());
+               std::string ip_str = addr.serializeString();
                const std::vector<std::string> &names = m_clients.getPlayerNames();
 
-               actionstream << player->getName() << " joins game. List of players: ";
+               actionstream << player->getName() << " [" << ip_str << "] joins game. List of players: ";
 
                for (const std::string &name : names) {
                        actionstream << name << " ";
@@ -1057,9 +1075,9 @@ PlayerSAO* Server::StageTwoClientInit(session_t peer_id)
        return playersao;
 }
 
-inline void Server::handleCommand(NetworkPacketpkt)
+inline void Server::handleCommand(NetworkPacket *pkt)
 {
-       const ToServerCommandHandleropHandle = toServerCommandTable[pkt->getCommand()];
+       const ToServerCommandHandler &opHandle = toServerCommandTable[pkt->getCommand()];
        (this->*opHandle.handler)(pkt);
 }
 
@@ -1068,7 +1086,7 @@ void Server::ProcessData(NetworkPacket *pkt)
        // Environment is locked first.
        MutexAutoLock envlock(m_env_mutex);
 
-       ScopeProfiler sp(g_profiler, "Server::ProcessData");
+       ScopeProfiler sp(g_profiler, "Server: Process network packet (sum)");
        u32 peer_id = pkt->getPeerId();
 
        try {
@@ -1155,96 +1173,12 @@ void Server::setTimeOfDay(u32 time)
        m_time_of_day_send_timer = 0;
 }
 
-void Server::onMapEditEvent(MapEditEvent *event)
+void Server::onMapEditEvent(const MapEditEvent &event)
 {
-       if(m_ignore_map_edit_events)
-               return;
-       if(m_ignore_map_edit_events_area.contains(event->getArea()))
+       if (m_ignore_map_edit_events_area.contains(event.getArea()))
                return;
-       MapEditEvent *e = event->clone();
-       m_unsent_map_edit_queue.push(e);
-}
 
-Inventory* Server::getInventory(const InventoryLocation &loc)
-{
-       switch (loc.type) {
-       case InventoryLocation::UNDEFINED:
-       case InventoryLocation::CURRENT_PLAYER:
-               break;
-       case InventoryLocation::PLAYER:
-       {
-               RemotePlayer *player = m_env->getPlayer(loc.name.c_str());
-               if(!player)
-                       return NULL;
-               PlayerSAO *playersao = player->getPlayerSAO();
-               if(!playersao)
-                       return NULL;
-               return playersao->getInventory();
-       }
-               break;
-       case InventoryLocation::NODEMETA:
-       {
-               NodeMetadata *meta = m_env->getMap().getNodeMetadata(loc.p);
-               if(!meta)
-                       return NULL;
-               return meta->getInventory();
-       }
-               break;
-       case InventoryLocation::DETACHED:
-       {
-               if(m_detached_inventories.count(loc.name) == 0)
-                       return NULL;
-               return m_detached_inventories[loc.name];
-       }
-               break;
-       default:
-               sanity_check(false); // abort
-               break;
-       }
-       return NULL;
-}
-void Server::setInventoryModified(const InventoryLocation &loc, bool playerSend)
-{
-       switch(loc.type){
-       case InventoryLocation::UNDEFINED:
-               break;
-       case InventoryLocation::PLAYER:
-       {
-               if (!playerSend)
-                       return;
-
-               RemotePlayer *player = m_env->getPlayer(loc.name.c_str());
-
-               if (!player)
-                       return;
-
-               PlayerSAO *playersao = player->getPlayerSAO();
-               if(!playersao)
-                       return;
-
-               SendInventory(playersao);
-       }
-               break;
-       case InventoryLocation::NODEMETA:
-       {
-               v3s16 blockpos = getNodeBlockPos(loc.p);
-
-               MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(blockpos);
-               if (block)
-                       block->raiseModified(MOD_STATE_WRITE_NEEDED);
-
-               m_clients.markBlockposAsNotSent(blockpos);
-       }
-               break;
-       case InventoryLocation::DETACHED:
-       {
-               sendDetachedInventory(loc.name,PEER_ID_INEXISTENT);
-       }
-               break;
-       default:
-               sanity_check(false); // abort
-               break;
-       }
+       m_unsent_map_edit_queue.push(new MapEditEvent(event));
 }
 
 void Server::SetBlocksNotSent(std::map<v3s16, MapBlock *>& block)
@@ -1291,7 +1225,8 @@ bool Server::getClientInfo(
                u8*          major,
                u8*          minor,
                u8*          patch,
-               std::string* vers_string
+               std::string* vers_string,
+               std::string* lang_code
        )
 {
        *state = m_clients.getClientState(peer_id);
@@ -1310,7 +1245,8 @@ bool Server::getClientInfo(
        *major = client->getMajor();
        *minor = client->getMinor();
        *patch = client->getPatch();
-       *vers_string = client->getPatch();
+       *vers_string = client->getFull();
+       *lang_code = client->getLangCode();
 
        m_clients.unlock();
 
@@ -1392,10 +1328,10 @@ void Server::SendMovement(session_t peer_id)
 
 void Server::SendPlayerHPOrDie(PlayerSAO *playersao, const PlayerHPChangeReason &reason)
 {
-       if (!g_settings->getBool("enable_damage"))
+       if (playersao->isImmortal())
                return;
 
-       session_t peer_id   = playersao->getPeerID();
+       session_t peer_id = playersao->getPeerID();
        bool is_alive = playersao->getHP() > 0;
 
        if (is_alive)
@@ -1499,21 +1435,27 @@ void Server::SendNodeDef(session_t peer_id,
        Non-static send methods
 */
 
-void Server::SendInventory(PlayerSAO* playerSAO)
+void Server::SendInventory(PlayerSAO *sao, bool incremental)
 {
-       UpdateCrafting(playerSAO->getPlayer());
+       RemotePlayer *player = sao->getPlayer();
+
+       // Do not send new format to old clients
+       incremental &= player->protocol_version >= 38;
+
+       UpdateCrafting(player);
 
        /*
                Serialize it
        */
 
-       NetworkPacket pkt(TOCLIENT_INVENTORY, 0, playerSAO->getPeerID());
-
-       std::ostringstream os;
-       playerSAO->getInventory()->serialize(os);
+       NetworkPacket pkt(TOCLIENT_INVENTORY, 0, sao->getPeerID());
 
-       std::string s = os.str();
+       std::ostringstream os(std::ios::binary);
+       sao->getInventory()->serialize(os, incremental);
+       sao->getInventory()->setModified(false);
+       player->setModified(true);
 
+       const std::string &s = os.str();
        pkt.putRawString(s.c_str(), s.size());
        Send(&pkt);
 }
@@ -1523,7 +1465,7 @@ void Server::SendChatMessage(session_t peer_id, const ChatMessage &message)
        NetworkPacket pkt(TOCLIENT_CHAT_MESSAGE, 0, peer_id);
        u8 version = 1;
        u8 type = message.type;
-       pkt << version << type << std::wstring(L"") << message.message << message.timestamp;
+       pkt << version << type << std::wstring(L"") << message.message << (u64)message.timestamp;
 
        if (peer_id != PEER_ID_INEXISTENT) {
                RemotePlayer *player = m_env->getPlayer(peer_id);
@@ -1537,16 +1479,20 @@ void Server::SendChatMessage(session_t peer_id, const ChatMessage &message)
 }
 
 void Server::SendShowFormspecMessage(session_t peer_id, const std::string &formspec,
-                                     const std::string &formname)
+       const std::string &formname)
 {
-       NetworkPacket pkt(TOCLIENT_SHOW_FORMSPEC, 0 , peer_id);
+       NetworkPacket pkt(TOCLIENT_SHOW_FORMSPEC, 0, peer_id);
        if (formspec.empty()){
                //the client should close the formspec
-               m_formspec_state_data.erase(peer_id);
+               //but make sure there wasn't another one open in meantime
+               const auto it = m_formspec_state_data.find(peer_id);
+               if (it != m_formspec_state_data.end() && it->second == formname) {
+                       m_formspec_state_data.erase(peer_id);
+               }
                pkt.putLongString("");
        } else {
                m_formspec_state_data[peer_id] = formname;
-               pkt.putLongString(FORMSPEC_VERSION_STRING + formspec);
+               pkt.putLongString(formspec);
        }
        pkt << formname;
 
@@ -1555,17 +1501,15 @@ void Server::SendShowFormspecMessage(session_t peer_id, const std::string &forms
 
 // Spawns a particle on peer with peer_id
 void Server::SendSpawnParticle(session_t peer_id, u16 protocol_version,
-                               v3f pos, v3f velocity, v3f acceleration,
-                               float expirationtime, float size, bool collisiondetection,
-                               bool collision_removal,
-                               bool vertical, const std::string &texture,
-                               const struct TileAnimationParams &animation, u8 glow)
+       const ParticleParameters &p)
 {
        static thread_local const float radius =
                        g_settings->getS16("max_block_send_distance") * MAP_BLOCKSIZE * BS;
 
        if (peer_id == PEER_ID_INEXISTENT) {
                std::vector<session_t> clients = m_clients.getClientIDs();
+               const v3f pos = p.pos * BS;
+               const float radius_sq = radius * radius;
 
                for (const session_t client_id : clients) {
                        RemotePlayer *player = m_env->getPlayer(client_id);
@@ -1577,73 +1521,78 @@ void Server::SendSpawnParticle(session_t peer_id, u16 protocol_version,
                                continue;
 
                        // Do not send to distant clients
-                       if (sao->getBasePosition().getDistanceFrom(pos * BS) > radius)
+                       if (sao->getBasePosition().getDistanceFromSQ(pos) > radius_sq)
                                continue;
 
-                       SendSpawnParticle(client_id, player->protocol_version,
-                                       pos, velocity, acceleration,
-                                       expirationtime, size, collisiondetection,
-                                       collision_removal, vertical, texture, animation, glow);
+                       SendSpawnParticle(client_id, player->protocol_version, p);
                }
                return;
        }
+       assert(protocol_version != 0);
 
        NetworkPacket pkt(TOCLIENT_SPAWN_PARTICLE, 0, peer_id);
 
-       pkt << pos << velocity << acceleration << expirationtime
-                       << size << collisiondetection;
-       pkt.putLongString(texture);
-       pkt << vertical;
-       pkt << collision_removal;
-       // This is horrible but required (why are there two ways to serialize pkts?)
-       std::ostringstream os(std::ios_base::binary);
-       animation.serialize(os, protocol_version);
-       pkt.putRawString(os.str());
-       pkt << glow;
+       {
+               // NetworkPacket and iostreams are incompatible...
+               std::ostringstream oss(std::ios_base::binary);
+               p.serialize(oss, protocol_version);
+               pkt.putRawString(oss.str());
+       }
 
        Send(&pkt);
 }
 
 // Adds a ParticleSpawner on peer with peer_id
 void Server::SendAddParticleSpawner(session_t peer_id, u16 protocol_version,
-       u16 amount, float spawntime, v3f minpos, v3f maxpos,
-       v3f minvel, v3f maxvel, v3f minacc, v3f maxacc, float minexptime, float maxexptime,
-       float minsize, float maxsize, bool collisiondetection, bool collision_removal,
-       u16 attached_id, bool vertical, const std::string &texture, u32 id,
-       const struct TileAnimationParams &animation, u8 glow)
+       const ParticleSpawnerParameters &p, u16 attached_id, u32 id)
 {
+       static thread_local const float radius =
+                       g_settings->getS16("max_block_send_distance") * MAP_BLOCKSIZE * BS;
+
        if (peer_id == PEER_ID_INEXISTENT) {
-               // This sucks and should be replaced:
                std::vector<session_t> clients = m_clients.getClientIDs();
+               const v3f pos = (p.minpos + p.maxpos) / 2.0f * BS;
+               const float radius_sq = radius * radius;
+               /* Don't send short-lived spawners to distant players.
+                * This could be replaced with proper tracking at some point. */
+               const bool distance_check = !attached_id && p.time <= 1.0f;
+
                for (const session_t client_id : clients) {
                        RemotePlayer *player = m_env->getPlayer(client_id);
                        if (!player)
                                continue;
+
+                       if (distance_check) {
+                               PlayerSAO *sao = player->getPlayerSAO();
+                               if (!sao)
+                                       continue;
+                               if (sao->getBasePosition().getDistanceFromSQ(pos) > radius_sq)
+                                       continue;
+                       }
+
                        SendAddParticleSpawner(client_id, player->protocol_version,
-                                       amount, spawntime, minpos, maxpos,
-                                       minvel, maxvel, minacc, maxacc, minexptime, maxexptime,
-                                       minsize, maxsize, collisiondetection, collision_removal,
-                                       attached_id, vertical, texture, id, animation, glow);
+                               p, attached_id, id);
                }
                return;
        }
+       assert(protocol_version != 0);
 
-       NetworkPacket pkt(TOCLIENT_ADD_PARTICLESPAWNER, 0, peer_id);
+       NetworkPacket pkt(TOCLIENT_ADD_PARTICLESPAWNER, 100, peer_id);
 
-       pkt << amount << spawntime << minpos << maxpos << minvel << maxvel
-                       << minacc << maxacc << minexptime << maxexptime << minsize
-                       << maxsize << collisiondetection;
+       pkt << p.amount << p.time << p.minpos << p.maxpos << p.minvel
+               << p.maxvel << p.minacc << p.maxacc << p.minexptime << p.maxexptime
+               << p.minsize << p.maxsize << p.collisiondetection;
 
-       pkt.putLongString(texture);
+       pkt.putLongString(p.texture);
 
-       pkt << id << vertical;
-       pkt << collision_removal;
-       pkt << attached_id;
-       // This is horrible but required
-       std::ostringstream os(std::ios_base::binary);
-       animation.serialize(os, protocol_version);
-       pkt.putRawString(os.str());
-       pkt << glow;
+       pkt << id << p.vertical << p.collision_removal << attached_id;
+       {
+               std::ostringstream os(std::ios_base::binary);
+               p.animation.serialize(os, protocol_version);
+               pkt.putRawString(os.str());
+       }
+       pkt << p.glow << p.object_collision;
+       pkt << p.node.param0 << p.node.param2 << p.node_tile;
 
        Send(&pkt);
 }
@@ -1652,7 +1601,6 @@ void Server::SendDeleteParticleSpawner(session_t peer_id, u32 id)
 {
        NetworkPacket pkt(TOCLIENT_DELETE_PARTICLESPAWNER, 4, peer_id);
 
-       // Ugly error in this packet
        pkt << id;
 
        if (peer_id != PEER_ID_INEXISTENT)
@@ -1668,7 +1616,8 @@ void Server::SendHUDAdd(session_t peer_id, u32 id, HudElement *form)
 
        pkt << id << (u8) form->type << form->pos << form->name << form->scale
                        << form->text << form->number << form->item << form->dir
-                       << form->align << form->offset << form->world_pos << form->size;
+                       << form->align << form->offset << form->world_pos << form->size
+                       << form->z_index << form->text2;
 
        Send(&pkt);
 }
@@ -1694,6 +1643,7 @@ void Server::SendHUDChange(session_t peer_id, u32 id, HudElementStat stat, void
                        break;
                case HUD_STAT_NAME:
                case HUD_STAT_TEXT:
+               case HUD_STAT_TEXT2:
                        pkt << *(std::string *) value;
                        break;
                case HUD_STAT_WORLD_POS:
@@ -1731,17 +1681,62 @@ void Server::SendHUDSetParam(session_t peer_id, u16 param, const std::string &va
        Send(&pkt);
 }
 
-void Server::SendSetSky(session_t peer_id, const video::SColor &bgcolor,
-               const std::string &type, const std::vector<std::string> &params,
-               bool &clouds)
+void Server::SendSetSky(session_t peer_id, const SkyboxParams &params)
 {
        NetworkPacket pkt(TOCLIENT_SET_SKY, 0, peer_id);
-       pkt << bgcolor << type << (u16) params.size();
 
-       for (const std::string &param : params)
-               pkt << param;
+       // Handle prior clients here
+       if (m_clients.getProtocolVersion(peer_id) < 39) {
+               pkt << params.bgcolor << params.type << (u16) params.textures.size();
+
+               for (const std::string& texture : params.textures)
+                       pkt << texture;
+
+               pkt << params.clouds;
+       } else { // Handle current clients and future clients
+               pkt << params.bgcolor << params.type
+               << params.clouds << params.fog_sun_tint
+               << params.fog_moon_tint << params.fog_tint_type;
+
+               if (params.type == "skybox") {
+                       pkt << (u16) params.textures.size();
+                       for (const std::string &texture : params.textures)
+                               pkt << texture;
+               } else if (params.type == "regular") {
+                       pkt << params.sky_color.day_sky << params.sky_color.day_horizon
+                               << params.sky_color.dawn_sky << params.sky_color.dawn_horizon
+                               << params.sky_color.night_sky << params.sky_color.night_horizon
+                               << params.sky_color.indoors;
+               }
+       }
+
+       Send(&pkt);
+}
+
+void Server::SendSetSun(session_t peer_id, const SunParams &params)
+{
+       NetworkPacket pkt(TOCLIENT_SET_SUN, 0, peer_id);
+       pkt << params.visible << params.texture
+               << params.tonemap << params.sunrise
+               << params.sunrise_visible << params.scale;
+
+       Send(&pkt);
+}
+void Server::SendSetMoon(session_t peer_id, const MoonParams &params)
+{
+       NetworkPacket pkt(TOCLIENT_SET_MOON, 0, peer_id);
+
+       pkt << params.visible << params.texture
+               << params.tonemap << params.scale;
+
+       Send(&pkt);
+}
+void Server::SendSetStars(session_t peer_id, const StarParams &params)
+{
+       NetworkPacket pkt(TOCLIENT_SET_STARS, 0, peer_id);
 
-       pkt << clouds;
+       pkt << params.visible << params.count
+               << params.starcolor << params.scale;
 
        Send(&pkt);
 }
@@ -1781,18 +1776,13 @@ void Server::SendTimeOfDay(session_t peer_id, u16 time, f32 time_speed)
 void Server::SendPlayerHP(session_t peer_id)
 {
        PlayerSAO *playersao = getPlayerSAO(peer_id);
-       // In some rare case if the player is disconnected
-       // while Lua call l_punch, for example, this can be NULL
-       if (!playersao)
-               return;
+       assert(playersao);
 
        SendHP(peer_id, playersao->getHP());
        m_script->player_event(playersao,"health_changed");
 
        // Send to other clients
-       std::string str = gob_cmd_punched(playersao->readDamage(), playersao->getHP());
-       ActiveObjectMessage aom(playersao->getId(), true, str);
-       playersao->m_messages_out.push(aom);
+       playersao->sendPunchCommand();
 }
 
 void Server::SendPlayerBreath(PlayerSAO *sao)
@@ -1811,20 +1801,30 @@ void Server::SendMovePlayer(session_t peer_id)
        assert(sao);
 
        NetworkPacket pkt(TOCLIENT_MOVE_PLAYER, sizeof(v3f) + sizeof(f32) * 2, peer_id);
-       pkt << sao->getBasePosition() << sao->getPitch() << sao->getYaw();
+       pkt << sao->getBasePosition() << sao->getLookPitch() << sao->getRotation().Y;
 
        {
                v3f pos = sao->getBasePosition();
                verbosestream << "Server: Sending TOCLIENT_MOVE_PLAYER"
                                << " pos=(" << pos.X << "," << pos.Y << "," << pos.Z << ")"
-                               << " pitch=" << sao->getPitch()
-                               << " yaw=" << sao->getYaw()
+                               << " pitch=" << sao->getLookPitch()
+                               << " yaw=" << sao->getRotation().Y
                                << std::endl;
        }
 
        Send(&pkt);
 }
 
+void Server::SendPlayerFov(session_t peer_id)
+{
+       NetworkPacket pkt(TOCLIENT_FOV, 4 + 1 + 4, peer_id);
+
+       PlayerFovSpec fov_spec = m_env->getPlayer(peer_id)->getFov();
+       pkt << fov_spec.fov << fov_spec.is_multiplier << fov_spec.transition_time;
+
+       Send(&pkt);
+}
+
 void Server::SendLocalPlayerAnimations(session_t peer_id, v2s32 animation_frames[4],
                f32 animation_speed)
 {
@@ -1872,7 +1872,8 @@ void Server::SendPlayerInventoryFormspec(session_t peer_id)
                return;
 
        NetworkPacket pkt(TOCLIENT_INVENTORY_FORMSPEC, 0, peer_id);
-       pkt.putLongString(FORMSPEC_VERSION_STRING + player->inventory_formspec);
+       pkt.putLongString(player->inventory_formspec);
+
        Send(&pkt);
 }
 
@@ -1884,16 +1885,107 @@ void Server::SendPlayerFormspecPrepend(session_t peer_id)
                return;
 
        NetworkPacket pkt(TOCLIENT_FORMSPEC_PREPEND, 0, peer_id);
-       pkt << FORMSPEC_VERSION_STRING + player->formspec_prepend;
+       pkt << player->formspec_prepend;
        Send(&pkt);
 }
 
-u32 Server::SendActiveObjectRemoveAdd(session_t peer_id, const std::string &datas)
+void Server::SendActiveObjectRemoveAdd(RemoteClient *client, PlayerSAO *playersao)
 {
-       NetworkPacket pkt(TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD, datas.size(), peer_id);
-       pkt.putRawString(datas.c_str(), datas.size());
+       // Radius inside which objects are active
+       static thread_local const s16 radius =
+               g_settings->getS16("active_object_send_range_blocks") * MAP_BLOCKSIZE;
+
+       // Radius inside which players are active
+       static thread_local const bool is_transfer_limited =
+               g_settings->exists("unlimited_player_transfer_distance") &&
+               !g_settings->getBool("unlimited_player_transfer_distance");
+
+       static thread_local const s16 player_transfer_dist =
+               g_settings->getS16("player_transfer_distance") * MAP_BLOCKSIZE;
+
+       s16 player_radius = player_transfer_dist == 0 && is_transfer_limited ?
+               radius : player_transfer_dist;
+
+       s16 my_radius = MYMIN(radius, playersao->getWantedRange() * MAP_BLOCKSIZE);
+       if (my_radius <= 0)
+               my_radius = radius;
+
+       std::queue<u16> removed_objects, added_objects;
+       m_env->getRemovedActiveObjects(playersao, my_radius, player_radius,
+               client->m_known_objects, removed_objects);
+       m_env->getAddedActiveObjects(playersao, my_radius, player_radius,
+               client->m_known_objects, added_objects);
+
+       int removed_count = removed_objects.size();
+       int added_count   = added_objects.size();
+
+       if (removed_objects.empty() && added_objects.empty())
+               return;
+
+       char buf[4];
+       std::string data;
+
+       // Handle removed objects
+       writeU16((u8*)buf, removed_objects.size());
+       data.append(buf, 2);
+       while (!removed_objects.empty()) {
+               // Get object
+               u16 id = removed_objects.front();
+               ServerActiveObject* obj = m_env->getActiveObject(id);
+
+               // Add to data buffer for sending
+               writeU16((u8*)buf, id);
+               data.append(buf, 2);
+
+               // Remove from known objects
+               client->m_known_objects.erase(id);
+
+               if (obj && obj->m_known_by_count > 0)
+                       obj->m_known_by_count--;
+
+               removed_objects.pop();
+       }
+
+       // Handle added objects
+       writeU16((u8*)buf, added_objects.size());
+       data.append(buf, 2);
+       while (!added_objects.empty()) {
+               // Get object
+               u16 id = added_objects.front();
+               ServerActiveObject *obj = m_env->getActiveObject(id);
+               added_objects.pop();
+
+               if (!obj) {
+                       warningstream << FUNCTION_NAME << ": NULL object id="
+                               << (int)id << std::endl;
+                       continue;
+               }
+
+               // Get object type
+               u8 type = obj->getSendType();
+
+               // Add to data buffer for sending
+               writeU16((u8*)buf, id);
+               data.append(buf, 2);
+               writeU8((u8*)buf, type);
+               data.append(buf, 1);
+
+               data.append(serializeLongString(
+                       obj->getClientInitializationData(client->net_proto_version)));
+
+               // Add to known objects
+               client->m_known_objects.insert(id);
+
+               obj->m_known_by_count++;
+       }
+
+       NetworkPacket pkt(TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD, data.size(), client->peer_id);
+       pkt.putRawString(data.c_str(), data.size());
        Send(&pkt);
-       return pkt.getSize();
+
+       verbosestream << "Server::SendActiveObjectRemoveAdd: "
+               << removed_count << " removed, " << added_count << " added, "
+               << "packet size is " << pkt.getSize() << std::endl;
 }
 
 void Server::SendActiveObjectMessages(session_t peer_id, const std::string &datas,
@@ -1909,16 +2001,33 @@ void Server::SendActiveObjectMessages(session_t peer_id, const std::string &data
                        &pkt, reliable);
 }
 
-void Server::SendCSMFlavourLimits(session_t peer_id)
+void Server::SendCSMRestrictionFlags(session_t peer_id)
+{
+       NetworkPacket pkt(TOCLIENT_CSM_RESTRICTION_FLAGS,
+               sizeof(m_csm_restriction_flags) + sizeof(m_csm_restriction_noderange), peer_id);
+       pkt << m_csm_restriction_flags << m_csm_restriction_noderange;
+       Send(&pkt);
+}
+
+void Server::SendPlayerSpeed(session_t peer_id, const v3f &added_vel)
 {
-       NetworkPacket pkt(TOCLIENT_CSM_FLAVOUR_LIMITS,
-               sizeof(m_csm_flavour_limits) + sizeof(m_csm_noderange_limit), peer_id);
-       pkt << m_csm_flavour_limits << m_csm_noderange_limit;
+       NetworkPacket pkt(TOCLIENT_PLAYER_SPEED, 0, peer_id);
+       pkt << added_vel;
        Send(&pkt);
 }
 
+inline s32 Server::nextSoundId()
+{
+       s32 ret = m_next_sound_id;
+       if (m_next_sound_id == INT32_MAX)
+               m_next_sound_id = 0; // signed overflow is undefined
+       else
+               m_next_sound_id++;
+       return ret;
+}
+
 s32 Server::playSound(const SimpleSoundSpec &spec,
-               const ServerSoundParams &params)
+               const ServerSoundParams &params, bool ephemeral)
 {
        // Find out initial position of sound
        bool pos_exists = false;
@@ -1929,7 +2038,7 @@ s32 Server::playSound(const SimpleSoundSpec &spec,
 
        // Filter destination clients
        std::vector<session_t> dst_clients;
-       if(!params.to_player.empty()) {
+       if (!params.to_player.empty()) {
                RemotePlayer *player = m_env->getPlayer(params.to_player.c_str());
                if(!player){
                        infostream<<"Server::playSound: Player \""<<params.to_player
@@ -1949,6 +2058,9 @@ s32 Server::playSound(const SimpleSoundSpec &spec,
                        RemotePlayer *player = m_env->getPlayer(client_id);
                        if (!player)
                                continue;
+                       if (!params.exclude_player.empty() &&
+                                       params.exclude_player == player->getName())
+                               continue;
 
                        PlayerSAO *sao = player->getPlayerSAO();
                        if (!sao)
@@ -1967,27 +2079,32 @@ s32 Server::playSound(const SimpleSoundSpec &spec,
                return -1;
 
        // Create the sound
-       s32 id = m_next_sound_id++;
-       // The sound will exist as a reference in m_playing_sounds
-       m_playing_sounds[id] = ServerPlayingSound();
-       ServerPlayingSound &psound = m_playing_sounds[id];
-       psound.params = params;
-       psound.spec = spec;
+       s32 id;
+       ServerPlayingSound *psound = nullptr;
+       if (ephemeral) {
+               id = -1; // old clients will still use this, so pick a reserved ID
+       } else {
+               id = nextSoundId();
+               // The sound will exist as a reference in m_playing_sounds
+               m_playing_sounds[id] = ServerPlayingSound();
+               psound = &m_playing_sounds[id];
+               psound->params = params;
+               psound->spec = spec;
+       }
 
        float gain = params.gain * spec.gain;
        NetworkPacket pkt(TOCLIENT_PLAY_SOUND, 0);
        pkt << id << spec.name << gain
                        << (u8) params.type << pos << params.object
-                       << params.loop << params.fade << params.pitch;
+                       << params.loop << params.fade << params.pitch
+                       << ephemeral;
 
-       // Backwards compability
-       bool play_sound = gain > 0;
+       bool as_reliable = !ephemeral;
 
        for (const u16 dst_client : dst_clients) {
-               if (play_sound || m_clients.getProtocolVersion(dst_client) >= 32) {
-                       psound.clients.insert(dst_client);
-                       m_clients.send(dst_client, 0, &pkt, true);
-               }
+               if (psound)
+                       psound->clients.insert(dst_client);
+               m_clients.send(dst_client, 0, &pkt, as_reliable);
        }
        return id;
 }
@@ -2058,76 +2175,132 @@ void Server::fadeSound(s32 handle, float step, float gain)
        }
 }
 
-void Server::sendRemoveNode(v3s16 p, u16 ignore_id,
-       std::vector<u16> *far_players, float far_d_nodes)
+void Server::sendRemoveNode(v3s16 p, std::unordered_set<u16> *far_players,
+               float far_d_nodes)
 {
-       float maxd = far_d_nodes*BS;
+       float maxd = far_d_nodes * BS;
        v3f p_f = intToFloat(p, BS);
+       v3s16 block_pos = getNodeBlockPos(p);
 
        NetworkPacket pkt(TOCLIENT_REMOVENODE, 6);
        pkt << p;
 
        std::vector<session_t> clients = m_clients.getClientIDs();
+       m_clients.lock();
+
        for (session_t client_id : clients) {
-               if (far_players) {
-                       // Get player
-                       if (RemotePlayer *player = m_env->getPlayer(client_id)) {
-                               PlayerSAO *sao = player->getPlayerSAO();
-                               if (!sao)
-                                       continue;
+               RemoteClient *client = m_clients.lockedGetClientNoEx(client_id);
+               if (!client)
+                       continue;
 
-                               // If player is far away, only set modified blocks not sent
-                               v3f player_pos = sao->getBasePosition();
-                               if (player_pos.getDistanceFrom(p_f) > maxd) {
-                                       far_players->push_back(client_id);
-                                       continue;
-                               }
-                       }
+               RemotePlayer *player = m_env->getPlayer(client_id);
+               PlayerSAO *sao = player ? player->getPlayerSAO() : nullptr;
+
+               // If player is far away, only set modified blocks not sent
+               if (!client->isBlockSent(block_pos) || (sao &&
+                               sao->getBasePosition().getDistanceFrom(p_f) > maxd)) {
+                       if (far_players)
+                               far_players->emplace(client_id);
+                       else
+                               client->SetBlockNotSent(block_pos);
+                       continue;
                }
 
                // Send as reliable
                m_clients.send(client_id, 0, &pkt, true);
        }
+
+       m_clients.unlock();
 }
 
-void Server::sendAddNode(v3s16 p, MapNode n, u16 ignore_id,
-               std::vector<u16> *far_players, float far_d_nodes,
-               bool remove_metadata)
+void Server::sendAddNode(v3s16 p, MapNode n, std::unordered_set<u16> *far_players,
+               float far_d_nodes, bool remove_metadata)
 {
-       float maxd = far_d_nodes*BS;
+       float maxd = far_d_nodes * BS;
        v3f p_f = intToFloat(p, BS);
+       v3s16 block_pos = getNodeBlockPos(p);
+
+       NetworkPacket pkt(TOCLIENT_ADDNODE, 6 + 2 + 1 + 1 + 1);
+       pkt << p << n.param0 << n.param1 << n.param2
+                       << (u8) (remove_metadata ? 0 : 1);
 
        std::vector<session_t> clients = m_clients.getClientIDs();
-       for (const session_t client_id : clients) {
-               if (far_players) {
-                       // Get player
-                       if (RemotePlayer *player = m_env->getPlayer(client_id)) {
-                               PlayerSAO *sao = player->getPlayerSAO();
-                               if (!sao)
-                                       continue;
+       m_clients.lock();
 
-                               // If player is far away, only set modified blocks not sent
-                               v3f player_pos = sao->getBasePosition();
-                               if(player_pos.getDistanceFrom(p_f) > maxd) {
-                                       far_players->push_back(client_id);
-                                       continue;
-                               }
-                       }
-               }
+       for (session_t client_id : clients) {
+               RemoteClient *client = m_clients.lockedGetClientNoEx(client_id);
+               if (!client)
+                       continue;
 
-               NetworkPacket pkt(TOCLIENT_ADDNODE, 6 + 2 + 1 + 1 + 1);
-               m_clients.lock();
-               RemoteClient* client = m_clients.lockedGetClientNoEx(client_id);
-               if (client) {
-                       pkt << p << n.param0 << n.param1 << n.param2
-                                       << (u8) (remove_metadata ? 0 : 1);
+               RemotePlayer *player = m_env->getPlayer(client_id);
+               PlayerSAO *sao = player ? player->getPlayerSAO() : nullptr;
+
+               // If player is far away, only set modified blocks not sent
+               if (!client->isBlockSent(block_pos) || (sao &&
+                               sao->getBasePosition().getDistanceFrom(p_f) > maxd)) {
+                       if (far_players)
+                               far_players->emplace(client_id);
+                       else
+                               client->SetBlockNotSent(block_pos);
+                       continue;
                }
-               m_clients.unlock();
 
                // Send as reliable
-               if (pkt.getSize() > 0)
-                       m_clients.send(client_id, 0, &pkt, true);
+               m_clients.send(client_id, 0, &pkt, true);
+       }
+
+       m_clients.unlock();
+}
+
+void Server::sendMetadataChanged(const std::list<v3s16> &meta_updates, float far_d_nodes)
+{
+       float maxd = far_d_nodes * BS;
+       NodeMetadataList meta_updates_list(false);
+       std::vector<session_t> clients = m_clients.getClientIDs();
+
+       m_clients.lock();
+
+       for (session_t i : clients) {
+               RemoteClient *client = m_clients.lockedGetClientNoEx(i);
+               if (!client)
+                       continue;
+
+               ServerActiveObject *player = m_env->getActiveObject(i);
+               v3f player_pos = player ? player->getBasePosition() : v3f();
+
+               for (const v3s16 &pos : meta_updates) {
+                       NodeMetadata *meta = m_env->getMap().getNodeMetadata(pos);
+
+                       if (!meta)
+                               continue;
+
+                       v3s16 block_pos = getNodeBlockPos(pos);
+                       if (!client->isBlockSent(block_pos) || (player &&
+                                       player_pos.getDistanceFrom(intToFloat(pos, BS)) > maxd)) {
+                               client->SetBlockNotSent(block_pos);
+                               continue;
+                       }
+
+                       // Add the change to send list
+                       meta_updates_list.set(pos, meta);
+               }
+               if (meta_updates_list.size() == 0)
+                       continue;
+
+               // Send the meta changes
+               std::ostringstream os(std::ios::binary);
+               meta_updates_list.serialize(os, client->net_proto_version, false, true);
+               std::ostringstream oss(std::ios::binary);
+               compressZlib(os.str(), oss);
+
+               NetworkPacket pkt(TOCLIENT_NODEMETA_CHANGED, 0);
+               pkt.putLongString(oss.str());
+               m_clients.send(i, 0, &pkt, true);
+
+               meta_updates_list.clear();
        }
+
+       m_clients.unlock();
 }
 
 void Server::SendBlockNoLock(session_t peer_id, MapBlock *block, u8 ver,
@@ -2154,14 +2327,12 @@ void Server::SendBlocks(float dtime)
        MutexAutoLock envlock(m_env_mutex);
        //TODO check if one big lock could be faster then multiple small ones
 
-       ScopeProfiler sp(g_profiler, "Server: sel and send blocks to clients");
-
        std::vector<PrioritySortedBlockTransfer> queue;
 
        u32 total_sending = 0;
 
        {
-               ScopeProfiler sp2(g_profiler, "Server: selecting blocks for sending");
+               ScopeProfiler sp2(g_profiler, "Server::SendBlocks(): Collect list");
 
                std::vector<session_t> clients = m_clients.getClientIDs();
 
@@ -2190,16 +2361,16 @@ void Server::SendBlocks(float dtime)
        u32 max_blocks_to_send = (m_env->getPlayerCount() + g_settings->getU32("max_users")) *
                g_settings->getU32("max_simultaneous_block_sends_per_client") / 4 + 1;
 
+       ScopeProfiler sp(g_profiler, "Server::SendBlocks(): Send to clients");
+       Map &map = m_env->getMap();
+
        for (const PrioritySortedBlockTransfer &block_to_send : queue) {
                if (total_sending >= max_blocks_to_send)
                        break;
 
-               MapBlock *block = nullptr;
-               try {
-                       block = m_env->getMap().getBlockNoCreate(block_to_send.pos);
-               } catch (const InvalidPositionException &e) {
+               MapBlock *block = map.getBlockNoCreateNoEx(block_to_send.pos);
+               if (!block)
                        continue;
-               }
 
                RemoteClient *client = m_clients.lockedGetClientNoEx(block_to_send.peer_id,
                                CS_Active);
@@ -2215,6 +2386,25 @@ void Server::SendBlocks(float dtime)
        m_clients.unlock();
 }
 
+bool Server::SendBlock(session_t peer_id, const v3s16 &blockpos)
+{
+       MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(blockpos);
+       if (!block)
+               return false;
+
+       m_clients.lock();
+       RemoteClient *client = m_clients.lockedGetClientNoEx(peer_id, CS_Active);
+       if (!client || client->isBlockSent(blockpos)) {
+               m_clients.unlock();
+               return false;
+       }
+       SendBlockNoLock(peer_id, block, client->serialization_version,
+                       client->net_proto_version);
+       m_clients.unlock();
+
+       return true;
+}
+
 void Server::fillMediaCache()
 {
        infostream<<"Server: Calculating media file checksums"<<std::endl;
@@ -2307,9 +2497,6 @@ void Server::fillMediaCache()
 
 void Server::sendMediaAnnouncement(session_t peer_id, const std::string &lang_code)
 {
-       verbosestream << "Server: Announcing files to id(" << peer_id << ")"
-               << std::endl;
-
        // Make packet
        NetworkPacket pkt(TOCLIENT_ANNOUNCE_MEDIA, 0, peer_id);
 
@@ -2332,6 +2519,9 @@ void Server::sendMediaAnnouncement(session_t peer_id, const std::string &lang_co
 
        pkt << g_settings->get("remote_media");
        Send(&pkt);
+
+       verbosestream << "Server: Announcing files to id(" << peer_id
+               << "): count=" << media_sent << " size=" << pkt.getSize() << std::endl;
 }
 
 struct SendableMedia
@@ -2447,44 +2637,45 @@ void Server::sendRequestedMedia(session_t peer_id,
        }
 }
 
-void Server::sendDetachedInventory(const std::string &name, session_t peer_id)
+void Server::sendDetachedInventory(Inventory *inventory, const std::string &name, session_t peer_id)
 {
-       if(m_detached_inventories.count(name) == 0) {
-               errorstream<<FUNCTION_NAME<<": \""<<name<<"\" not found"<<std::endl;
-               return;
-       }
-       Inventory *inv = m_detached_inventories[name];
-       std::ostringstream os(std::ios_base::binary);
-
-       os << serializeString(name);
-       inv->serialize(os);
-
-       // Make data buffer
-       std::string s = os.str();
-
        NetworkPacket pkt(TOCLIENT_DETACHED_INVENTORY, 0, peer_id);
-       pkt.putRawString(s.c_str(), s.size());
+       pkt << name;
 
-       const std::string &check = m_detached_inventories_player[name];
-       if (peer_id == PEER_ID_INEXISTENT) {
-               if (check.empty())
-                       return m_clients.sendToAll(&pkt);
-               RemotePlayer *p = m_env->getPlayer(check.c_str());
-               if (p)
-                       m_clients.send(p->getPeerId(), 0, &pkt, true);
+       if (!inventory) {
+               pkt << false; // Remove inventory
        } else {
-               if (check.empty() || getPlayerName(peer_id) == check)
-                       Send(&pkt);
+               pkt << true; // Update inventory
+
+               // Serialization & NetworkPacket isn't a love story
+               std::ostringstream os(std::ios_base::binary);
+               inventory->serialize(os);
+               inventory->setModified(false);
+
+               const std::string &os_str = os.str();
+               pkt << static_cast<u16>(os_str.size()); // HACK: to keep compatibility with 5.0.0 clients
+               pkt.putRawString(os_str);
        }
+
+       if (peer_id == PEER_ID_INEXISTENT)
+               m_clients.sendToAll(&pkt);
+       else
+               Send(&pkt);
 }
 
-void Server::sendDetachedInventories(session_t peer_id)
+void Server::sendDetachedInventories(session_t peer_id, bool incremental)
 {
-       for (const auto &detached_inventory : m_detached_inventories) {
-               const std::string &name = detached_inventory.first;
-               //Inventory *inv = i->second;
-               sendDetachedInventory(name, peer_id);
+       // Lookup player name, to filter detached inventories just after
+       std::string peer_name;
+       if (peer_id != PEER_ID_INEXISTENT) {
+               peer_name = getClient(peer_id, CS_Created)->getName();
        }
+
+       auto send_cb = [this, peer_id](const std::string &name, Inventory *inv) {
+               sendDetachedInventory(inv, name, peer_id);
+       };
+
+       m_inventory_mgr->sendDetachedInventories(peer_name, incremental, send_cb);
 }
 
 /*
@@ -2494,16 +2685,14 @@ void Server::sendDetachedInventories(session_t peer_id)
 void Server::DiePlayer(session_t peer_id, const PlayerHPChangeReason &reason)
 {
        PlayerSAO *playersao = getPlayerSAO(peer_id);
-       // In some rare cases this can be NULL -- if the player is disconnected
-       // when a Lua function modifies l_punch, for example
-       if (!playersao)
-               return;
+       assert(playersao);
 
        infostream << "Server::DiePlayer(): Player "
                        << playersao->getPlayer()->getName()
                        << " dies" << std::endl;
 
        playersao->setHP(0, reason);
+       playersao->clearParentAttachment();
 
        // Trigger scripted stuff
        m_script->on_dieplayer(playersao, reason);
@@ -2631,10 +2820,14 @@ void Server::DeleteClient(session_t peer_id, ClientDeletionReason reason)
                        PlayerSAO *playersao = player->getPlayerSAO();
                        assert(playersao);
 
+                       playersao->clearChildAttachments();
+                       playersao->clearParentAttachment();
+
                        // inform connected clients
+                       const std::string &player_name = player->getName();
                        NetworkPacket notice(TOCLIENT_UPDATE_PLAYER_LIST, 0, PEER_ID_INEXISTENT);
                        // (u16) 1 + std::string represents a vector serialization representation
-                       notice << (u8) PLAYER_LIST_REMOVE  << (u16) 1 << std::string(playersao->getPlayer()->getName());
+                       notice << (u8) PLAYER_LIST_REMOVE  << (u16) 1 << player_name;
                        m_clients.sendToAll(&notice);
                        // run scripts
                        m_script->on_leaveplayer(playersao, reason == CDR_TIMEOUT);
@@ -2684,6 +2877,13 @@ void Server::DeleteClient(session_t peer_id, ClientDeletionReason reason)
 
 void Server::UpdateCrafting(RemotePlayer *player)
 {
+       InventoryList *clist = player->inventory.getList("craft");
+       if (!clist || clist->getSize() == 0)
+               return;
+
+       if (!clist->checkModified())
+               return;
+
        // Get a preview for crafting
        ItemStack preview;
        InventoryLocation loc;
@@ -2691,13 +2891,13 @@ void Server::UpdateCrafting(RemotePlayer *player)
        std::vector<ItemStack> output_replacements;
        getCraftingResult(&player->inventory, preview, output_replacements, false, this);
        m_env->getScriptIface()->item_CraftPredict(preview, player->getPlayerSAO(),
-                       (&player->inventory)->getList("craft"), loc);
+                       clist, loc);
 
-       // Put the new preview in
        InventoryList *plist = player->inventory.getList("craftpreview");
-       sanity_check(plist);
-       sanity_check(plist->getSize() >= 1);
-       plist->changeItem(0, preview);
+       if (plist && plist->getSize() >= 1) {
+               // Put the new preview in
+               plist->changeItem(0, preview);
+       }
 }
 
 void Server::handleChatInterfaceEvent(ChatEvent *evt)
@@ -2724,28 +2924,28 @@ std::wstring Server::handleChat(const std::string &name, const std::wstring &wna
 {
        // If something goes wrong, this player is to blame
        RollbackScopeActor rollback_scope(m_rollback,
-               std::string("player:") + name);
+                       std::string("player:") + name);
 
        if (g_settings->getBool("strip_color_codes"))
                wmessage = unescape_enriched(wmessage);
 
        if (player) {
                switch (player->canSendChatMessage()) {
-                       case RPLAYER_CHATRESULT_FLOODING: {
-                               std::wstringstream ws;
-                               ws << L"You cannot send more messages. You are limited to "
-                                  << g_settings->getFloat("chat_message_limit_per_10sec")
-                                  << L" messages per 10 seconds.";
-                               return ws.str();
-                       }
-                       case RPLAYER_CHATRESULT_KICK:
-                               DenyAccess_Legacy(player->getPeerId(),
-                                               L"You have been kicked due to message flooding.");
-                               return L"";
-                       case RPLAYER_CHATRESULT_OK:
-                               break;
-                       default:
-                               FATAL_ERROR("Unhandled chat filtering result found.");
+               case RPLAYER_CHATRESULT_FLOODING: {
+                       std::wstringstream ws;
+                       ws << L"You cannot send more messages. You are limited to "
+                                       << g_settings->getFloat("chat_message_limit_per_10sec")
+                                       << L" messages per 10 seconds.";
+                       return ws.str();
+               }
+               case RPLAYER_CHATRESULT_KICK:
+                       DenyAccess_Legacy(player->getPeerId(),
+                                       L"You have been kicked due to message flooding.");
+                       return L"";
+               case RPLAYER_CHATRESULT_OK:
+                       break;
+               default:
+                       FATAL_ERROR("Unhandled chat filtering result found.");
                }
        }
 
@@ -2755,8 +2955,13 @@ std::wstring Server::handleChat(const std::string &name, const std::wstring &wna
                                L"It was refused. Send a shorter message";
        }
 
+       auto message = trim(wide_to_utf8(wmessage));
+       if (message.find_first_of("\n\r") != std::wstring::npos) {
+               return L"New lines are not permitted in chat messages";
+       }
+
        // Run script hook, exit if script ate the chat message
-       if (m_script->on_chat_message(name, wide_to_utf8(wmessage)))
+       if (m_script->on_chat_message(name, message))
                return L"";
 
        // Line to send
@@ -2768,10 +2973,16 @@ std::wstring Server::handleChat(const std::string &name, const std::wstring &wna
                line += L"-!- You don't have permission to shout.";
                broadcast_line = false;
        } else {
-               line += L"<";
-               line += wname;
-               line += L"> ";
-               line += wmessage;
+               /*
+                       Workaround for fixing chat on Android. Lua doesn't handle
+                       the Cyrillic alphabet and some characters on older Android devices
+               */
+#ifdef __ANDROID__
+               line += L"<" + wname + L"> " + wmessage;
+#else
+               line += narrow_to_wide(m_script->formatChatMessage(name,
+                               wide_to_narrow(wmessage)));
+#endif
        }
 
        /*
@@ -2851,38 +3062,44 @@ PlayerSAO *Server::getPlayerSAO(session_t peer_id)
 std::wstring Server::getStatusString()
 {
        std::wostringstream os(std::ios_base::binary);
-       os<<L"# Server: ";
+       os << L"# Server: ";
        // Version
-       os<<L"version="<<narrow_to_wide(g_version_string);
+       os << L"version=" << narrow_to_wide(g_version_string);
        // Uptime
-       os<<L", uptime="<<m_uptime.get();
+       os << L", uptime=" << m_uptime_counter->get();
        // Max lag estimate
-       os<<L", max_lag="<<m_env->getMaxLagEstimate();
+       os << L", max_lag=" << (m_env ? m_env->getMaxLagEstimate() : 0);
+
        // Information about clients
        bool first = true;
-       os<<L", clients={";
-       std::vector<session_t> clients = m_clients.getClientIDs();
-       for (session_t client_id : clients) {
-               // Get player
-               RemotePlayer *player = m_env->getPlayer(client_id);
-               // Get name of player
-               std::wstring name = L"unknown";
-               if (player)
-                       name = narrow_to_wide(player->getName());
-               // Add name to information string
-               if(!first)
-                       os << L", ";
-               else
-                       first = false;
-               os << name;
+       os << L", clients={";
+       if (m_env) {
+               std::vector<session_t> clients = m_clients.getClientIDs();
+               for (session_t client_id : clients) {
+                       RemotePlayer *player = m_env->getPlayer(client_id);
+
+                       // Get name of player
+                       std::wstring name = L"unknown";
+                       if (player)
+                               name = narrow_to_wide(player->getName());
+
+                       // Add name to information string
+                       if (!first)
+                               os << L", ";
+                       else
+                               first = false;
+
+                       os << name;
+               }
        }
        os << L"}";
 
-       if (!((ServerMap*)(&m_env->getMap()))->isSavingEnabled())
-               os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled.";
+       if (m_env && !((ServerMap*)(&m_env->getMap()))->isSavingEnabled())
+               os << std::endl << L"# Server: " << " WARNING: Map saving is disabled.";
 
        if (!g_settings->get("motd").empty())
-               os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings->get("motd"));
+               os << std::endl << L"# Server: " << narrow_to_wide(g_settings->get("motd"));
+
        return os.str();
 }
 
@@ -3057,7 +3274,7 @@ bool Server::hudSetHotbarItemcount(RemotePlayer *player, s32 hotbar_itemcount)
        return true;
 }
 
-void Server::hudSetHotbarImage(RemotePlayer *player, std::string name)
+void Server::hudSetHotbarImage(RemotePlayer *player, const std::string &name)
 {
        if (!player)
                return;
@@ -3066,7 +3283,7 @@ void Server::hudSetHotbarImage(RemotePlayer *player, std::string name)
        SendHUDSetParam(player->getPeerId(), HUD_PARAM_HOTBAR_IMAGE, name);
 }
 
-void Server::hudSetHotbarSelectedImage(RemotePlayer *player, std::string name)
+void Server::hudSetHotbarSelectedImage(RemotePlayer *player, const std::string &name)
 {
        if (!player)
                return;
@@ -3096,13 +3313,32 @@ void Server::setPlayerEyeOffset(RemotePlayer *player, const v3f &first, const v3
        SendEyeOffset(player->getPeerId(), first, third);
 }
 
-void Server::setSky(RemotePlayer *player, const video::SColor &bgcolor,
-       const std::string &type, const std::vector<std::string> &params,
-       bool &clouds)
+void Server::setSky(RemotePlayer *player, const SkyboxParams &params)
+{
+       sanity_check(player);
+       player->setSky(params);
+       SendSetSky(player->getPeerId(), params);
+}
+
+void Server::setSun(RemotePlayer *player, const SunParams &params)
+{
+       sanity_check(player);
+       player->setSun(params);
+       SendSetSun(player->getPeerId(), params);
+}
+
+void Server::setMoon(RemotePlayer *player, const MoonParams &params)
+{
+       sanity_check(player);
+       player->setMoon(params);
+       SendSetMoon(player->getPeerId(), params);
+}
+
+void Server::setStars(RemotePlayer *player, const StarParams &params)
 {
        sanity_check(player);
-       player->setSky(bgcolor, type, params, clouds);
-       SendSetSky(player->getPeerId(), bgcolor, type, params, clouds);
+       player->setStars(params);
+       SendSetStars(player->getPeerId(), params);
 }
 
 void Server::setClouds(RemotePlayer *player, const CloudParams &params)
@@ -3112,15 +3348,12 @@ void Server::setClouds(RemotePlayer *player, const CloudParams &params)
        SendCloudParams(player->getPeerId(), params);
 }
 
-bool Server::overrideDayNightRatio(RemotePlayer *player, bool do_override,
+void Server::overrideDayNightRatio(RemotePlayer *player, bool do_override,
        float ratio)
 {
-       if (!player)
-               return false;
-
+       sanity_check(player);
        player->overrideDayNightRatio(do_override, ratio);
        SendOverrideDayNightRatio(player->getPeerId(), do_override, ratio);
-       return true;
 }
 
 void Server::notifyPlayers(const std::wstring &msg)
@@ -3128,12 +3361,8 @@ void Server::notifyPlayers(const std::wstring &msg)
        SendChatMessage(PEER_ID_INEXISTENT, ChatMessage(msg));
 }
 
-void Server::spawnParticle(const std::string &playername, v3f pos,
-       v3f velocity, v3f acceleration,
-       float expirationtime, float size, bool
-       collisiondetection, bool collision_removal,
-       bool vertical, const std::string &texture,
-       const struct TileAnimationParams &animation, u8 glow)
+void Server::spawnParticle(const std::string &playername,
+       const ParticleParameters &p)
 {
        // m_env will be NULL if the server is initializing
        if (!m_env)
@@ -3149,18 +3378,11 @@ void Server::spawnParticle(const std::string &playername, v3f pos,
                proto_ver = player->protocol_version;
        }
 
-       SendSpawnParticle(peer_id, proto_ver, pos, velocity, acceleration,
-                       expirationtime, size, collisiondetection,
-                       collision_removal, vertical, texture, animation, glow);
+       SendSpawnParticle(peer_id, proto_ver, p);
 }
 
-u32 Server::addParticleSpawner(u16 amount, float spawntime,
-       v3f minpos, v3f maxpos, v3f minvel, v3f maxvel, v3f minacc, v3f maxacc,
-       float minexptime, float maxexptime, float minsize, float maxsize,
-       bool collisiondetection, bool collision_removal,
-       ServerActiveObject *attached, bool vertical, const std::string &texture,
-       const std::string &playername, const struct TileAnimationParams &animation,
-       u8 glow)
+u32 Server::addParticleSpawner(const ParticleSpawnerParameters &p,
+       ServerActiveObject *attached, const std::string &playername)
 {
        // m_env will be NULL if the server is initializing
        if (!m_env)
@@ -3180,16 +3402,11 @@ u32 Server::addParticleSpawner(u16 amount, float spawntime,
 
        u32 id;
        if (attached_id == 0)
-               id = m_env->addParticleSpawner(spawntime);
+               id = m_env->addParticleSpawner(p.time);
        else
-               id = m_env->addParticleSpawner(spawntime, attached_id);
-
-       SendAddParticleSpawner(peer_id, proto_ver, amount, spawntime,
-               minpos, maxpos, minvel, maxvel, minacc, maxacc,
-               minexptime, maxexptime, minsize, maxsize,
-               collisiondetection, collision_removal, attached_id, vertical,
-               texture, id, animation, glow);
+               id = m_env->addParticleSpawner(p.time, attached_id);
 
+       SendAddParticleSpawner(peer_id, proto_ver, p, attached_id, id);
        return id;
 }
 
@@ -3211,23 +3428,6 @@ void Server::deleteParticleSpawner(const std::string &playername, u32 id)
        SendDeleteParticleSpawner(peer_id, id);
 }
 
-Inventory* Server::createDetachedInventory(const std::string &name, const std::string &player)
-{
-       if(m_detached_inventories.count(name) > 0){
-               infostream<<"Server clearing detached inventory \""<<name<<"\""<<std::endl;
-               delete m_detached_inventories[name];
-       } else {
-               infostream<<"Server creating detached inventory \""<<name<<"\""<<std::endl;
-       }
-       Inventory *inv = new Inventory(m_itemdef);
-       sanity_check(inv);
-       m_detached_inventories[name] = inv;
-       m_detached_inventories_player[name] = player;
-       //TODO find a better way to do this
-       sendDetachedInventory(name,PEER_ID_INEXISTENT);
-       return inv;
-}
-
 // actions: time-reversed list
 // Return value: success/failure
 bool Server::rollbackRevertActions(const std::list<RollbackAction> &actions,
@@ -3248,7 +3448,7 @@ bool Server::rollbackRevertActions(const std::list<RollbackAction> &actions,
 
        for (const RollbackAction &action : actions) {
                num_tried++;
-               bool success = action.applyRevert(map, this, this);
+               bool success = action.applyRevert(map, m_inventory_mgr.get(), this);
                if(!success){
                        num_failed++;
                        std::ostringstream os;
@@ -3338,89 +3538,105 @@ v3f Server::findSpawnPos()
 {
        ServerMap &map = m_env->getServerMap();
        v3f nodeposf;
-       if (g_settings->getV3FNoEx("static_spawnpoint", nodeposf)) {
+       if (g_settings->getV3FNoEx("static_spawnpoint", nodeposf))
                return nodeposf * BS;
-       }
 
        bool is_good = false;
        // Limit spawn range to mapgen edges (determined by 'mapgen_limit')
        s32 range_max = map.getMapgenParams()->getSpawnRangeMax();
 
        // Try to find a good place a few times
-       for(s32 i = 0; i < 4000 && !is_good; i++) {
+       for (s32 i = 0; i < 4000 && !is_good; i++) {
                s32 range = MYMIN(1 + i, range_max);
                // We're going to try to throw the player to this position
                v2s16 nodepos2d = v2s16(
                        -range + (myrand() % (range * 2)),
                        -range + (myrand() % (range * 2)));
-
                // Get spawn level at point
                s16 spawn_level = m_emerge->getSpawnLevelAtPoint(nodepos2d);
-               // Continue if MAX_MAP_GENERATION_LIMIT was returned by
-               // the mapgen to signify an unsuitable spawn position
-               if (spawn_level == MAX_MAP_GENERATION_LIMIT)
+               // Continue if MAX_MAP_GENERATION_LIMIT was returned by the mapgen to
+               // signify an unsuitable spawn position, or if outside limits.
+               if (spawn_level >= MAX_MAP_GENERATION_LIMIT ||
+                               spawn_level <= -MAX_MAP_GENERATION_LIMIT)
                        continue;
 
                v3s16 nodepos(nodepos2d.X, spawn_level, nodepos2d.Y);
-
+               // Consecutive empty nodes
                s32 air_count = 0;
-               for (s32 i = 0; i < 10; i++) {
+
+               // Search upwards from 'spawn level' for 2 consecutive empty nodes, to
+               // avoid obstructions in already-generated mapblocks.
+               // In ungenerated mapblocks consisting of 'ignore' nodes, there will be
+               // no obstructions, but mapgen decorations are generated after spawn so
+               // the player may end up inside one.
+               for (s32 i = 0; i < 8; i++) {
                        v3s16 blockpos = getNodeBlockPos(nodepos);
                        map.emergeBlock(blockpos, true);
-                       content_t c = map.getNodeNoEx(nodepos).getContent();
-                       if (c == CONTENT_AIR || c == CONTENT_IGNORE) {
+                       content_t c = map.getNode(nodepos).getContent();
+
+                       // In generated mapblocks allow spawn in all 'airlike' drawtype nodes.
+                       // In ungenerated mapblocks allow spawn in 'ignore' nodes.
+                       if (m_nodedef->get(c).drawtype == NDT_AIRLIKE || c == CONTENT_IGNORE) {
                                air_count++;
                                if (air_count >= 2) {
+                                       // Spawn in lower empty node
+                                       nodepos.Y--;
                                        nodeposf = intToFloat(nodepos, BS);
                                        // Don't spawn the player outside map boundaries
                                        if (objectpos_over_limit(nodeposf))
-                                               continue;
+                                               // Exit this loop, positions above are probably over limit
+                                               break;
+
+                                       // Good position found, cause an exit from main loop
                                        is_good = true;
                                        break;
                                }
+                       } else {
+                               air_count = 0;
                        }
                        nodepos.Y++;
                }
        }
 
-       return nodeposf;
+       if (is_good)
+               return nodeposf;
+
+       // No suitable spawn point found, return fallback 0,0,0
+       return v3f(0.0f, 0.0f, 0.0f);
 }
 
 void Server::requestShutdown(const std::string &msg, bool reconnect, float delay)
 {
-       m_shutdown_timer = delay;
-       m_shutdown_msg = msg;
-       m_shutdown_ask_reconnect = reconnect;
-
        if (delay == 0.0f) {
        // No delay, shutdown immediately
-               m_shutdown_requested = true;
+               m_shutdown_state.is_requested = true;
                // only print to the infostream, a chat message saying
                // "Server Shutting Down" is sent when the server destructs.
                infostream << "*** Immediate Server shutdown requested." << std::endl;
-       } else if (delay < 0.0f && m_shutdown_timer > 0.0f) {
-       // Negative delay, cancel shutdown if requested
-               m_shutdown_timer = 0.0f;
-               m_shutdown_msg = "";
-               m_shutdown_ask_reconnect = false;
-               m_shutdown_requested = false;
+       } else if (delay < 0.0f && m_shutdown_state.isTimerRunning()) {
+               // Negative delay, cancel shutdown if requested
+               m_shutdown_state.reset();
                std::wstringstream ws;
 
                ws << L"*** Server shutdown canceled.";
 
                infostream << wide_to_utf8(ws.str()).c_str() << std::endl;
                SendChatMessage(PEER_ID_INEXISTENT, ws.str());
+               // m_shutdown_* are already handled, skip.
+               return;
        } else if (delay > 0.0f) {
        // Positive delay, tell the clients when the server will shut down
                std::wstringstream ws;
 
                ws << L"*** Server shutting down in "
-                               << duration_to_string(myround(m_shutdown_timer)).c_str()
+                               << duration_to_string(myround(delay)).c_str()
                                << ".";
 
                infostream << wide_to_utf8(ws.str()).c_str() << std::endl;
                SendChatMessage(PEER_ID_INEXISTENT, ws.str());
        }
+
+       m_shutdown_state.trigger(delay, msg, reconnect);
 }
 
 PlayerSAO* Server::emergePlayer(const char *name, session_t peer_id, u16 proto_version)
@@ -3499,16 +3715,18 @@ void dedicated_server_loop(Server &server, bool &kill)
        static thread_local const float profiler_print_interval =
                        g_settings->getFloat("profiler_print_interval");
 
+       /*
+        * The dedicated server loop only does time-keeping (in Server::step) and
+        * provides a way to main.cpp to kill the server externally (bool &kill).
+        */
+
        for(;;) {
                // This is kind of a hack but can be done like this
                // because server.step() is very light
-               {
-                       ScopeProfiler sp(g_profiler, "dedicated server sleep");
-                       sleep_ms((int)(steplen*1000.0));
-               }
+               sleep_ms((int)(steplen*1000.0));
                server.step(steplen);
 
-               if (server.getShutdownRequested() || kill)
+               if (server.isShutdownRequested() || kill)
                        break;
 
                /*
@@ -3596,3 +3814,20 @@ void Server::broadcastModChannelMessage(const std::string &channel,
                m_script->on_modchannel_message(channel, sender, message);
        }
 }
+
+void Server::loadTranslationLanguage(const std::string &lang_code)
+{
+       if (g_server_translations->count(lang_code))
+               return; // Already loaded
+
+       std::string suffix = "." + lang_code + ".tr";
+       for (const auto &i : m_media) {
+               if (str_ends_with(i.first, suffix)) {
+                       std::ifstream t(i.second.path);
+                       std::string data((std::istreambuf_iterator<char>(t)),
+                       std::istreambuf_iterator<char>());
+
+                       (*g_server_translations)[lang_code].loadTranslation(data);
+               }
+       }
+}