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server.cpp
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server.cpp
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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <[email protected]>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "server.h"
#include <iostream>
#include <queue>
#include <algorithm>
#include "network/connection.h"
#include "network/networkprotocol.h"
#include "network/serveropcodes.h"
#include "ban.h"
#include "environment.h"
#include "map.h"
#include "threading/mutex_auto_lock.h"
#include "constants.h"
#include "voxel.h"
#include "config.h"
#include "version.h"
#include "filesys.h"
#include "mapblock.h"
#include "server/serveractiveobject.h"
#include "settings.h"
#include "profiler.h"
#include "log.h"
#include "scripting_server.h"
#include "nodedef.h"
#include "itemdef.h"
#include "craftdef.h"
#include "emerge.h"
#include "mapgen/mapgen.h"
#include "mapgen/mg_biome.h"
#include "content_mapnode.h"
#include "content_nodemeta.h"
#include "content/mods.h"
#include "modchannels.h"
#include "serverlist.h"
#include "util/string.h"
#include "rollback.h"
#include "util/serialize.h"
#include "util/thread.h"
#include "defaultsettings.h"
#include "server/mods.h"
#include "util/base64.h"
#include "util/sha1.h"
#include "util/hex.h"
#include "database/database.h"
#include "chatmessage.h"
#include "chat_interface.h"
#include "remoteplayer.h"
#include "server/player_sao.h"
#include "server/serverinventorymgr.h"
#include "translation.h"
#include "database/database-sqlite3.h"
#include "database/database-files.h"
#include "database/database-dummy.h"
#include "gameparams.h"
class ClientNotFoundException : public BaseException
{
public:
ClientNotFoundException(const char *s):
BaseException(s)
{}
};
class ServerThread : public Thread
{
public:
ServerThread(Server *server):
Thread("Server"),
m_server(server)
{}
void *run();
private:
Server *m_server;
};
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.
*/
try {
m_server->AsyncRunStep(true);
} catch (con::ConnectionBindFailed &e) {
m_server->setAsyncFatalError(e.what());
} catch (LuaError &e) {
m_server->setAsyncFatalError(e);
}
while (!stopRequested()) {
try {
m_server->AsyncRunStep();
m_server->Receive();
} catch (con::PeerNotFoundException &e) {
infostream<<"Server: PeerNotFoundException"<<std::endl;
} catch (ClientNotFoundException &e) {
} catch (con::ConnectionBindFailed &e) {
m_server->setAsyncFatalError(e.what());
} catch (LuaError &e) {
m_server->setAsyncFatalError(e);
}
}
END_DEBUG_EXCEPTION_HANDLER
return nullptr;
}
v3f ServerPlayingSound::getPos(ServerEnvironment *env, bool *pos_exists) const
{
if (pos_exists)
*pos_exists = false;
switch (type ){
case SoundLocation::Local:
return v3f(0,0,0);
case SoundLocation::Position:
if (pos_exists)
*pos_exists = true;
return pos;
case SoundLocation::Object:
{
if (object == 0)
return v3f(0,0,0);
ServerActiveObject *sao = env->getActiveObject(object);
if (!sao)
return v3f(0,0,0);
if (pos_exists)
*pos_exists = true;
return sao->getBasePosition();
}
}
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
*/
Server::Server(
const std::string &path_world,
const SubgameSpec &gamespec,
bool simple_singleplayer_mode,
Address bind_addr,
bool dedicated,
ChatInterface *iface,
std::string *on_shutdown_errmsg
):
m_bind_addr(bind_addr),
m_path_world(path_world),
m_gamespec(gamespec),
m_simple_singleplayer_mode(simple_singleplayer_mode),
m_dedicated(dedicated),
m_async_fatal_error(""),
m_con(std::make_shared<con::Connection>(PROTOCOL_ID,
512,
CONNECTION_TIMEOUT,
m_bind_addr.isIPv6(),
this)),
m_itemdef(createItemDefManager()),
m_nodedef(createNodeDefManager()),
m_craftdef(createCraftDefManager()),
m_thread(new ServerThread(this)),
m_clients(m_con),
m_admin_chat(iface),
m_on_shutdown_errmsg(on_shutdown_errmsg),
m_modchannel_mgr(new ModChannelMgr())
{
if (m_path_world.empty())
throw ServerError("Supplied empty world path");
if (!gamespec.isValid())
throw ServerError("Supplied invalid gamespec");
#if USE_PROMETHEUS
m_metrics_backend = std::unique_ptr<MetricsBackend>(createPrometheusMetricsBackend());
#else
m_metrics_backend = std::make_unique<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)");
const std::string aom_types[] = {"reliable", "unreliable"};
for (u32 i = 0; i < ARRLEN(aom_types); i++) {
std::string help_str("Number of active object messages generated (");
help_str.append(aom_types[i]).append(")");
m_aom_buffer_counter[i] = m_metrics_backend->addCounter(
"minetest_core_aom_generated_count", help_str,
{{"type", aom_types[i]}});
}
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_map_edit_event_counter = m_metrics_backend->addCounter(
"minetest_core_map_edit_events",
"Number of map edit events");
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;
try {
m_script->on_shutdown();
} catch (ModError &e) {
errorstream << "ModError: " << e.what() << std::endl;
if (m_on_shutdown_errmsg) {
if (m_on_shutdown_errmsg->empty()) {
*m_on_shutdown_errmsg = std::string("ModError: ") + e.what();
} else {
*m_on_shutdown_errmsg += std::string("\nModError: ") + e.what();
}
}
}
infostream << "Server: Saving environment metadata" << std::endl;
m_env->saveMeta();
}
// Stop threads
if (m_thread) {
stop();
delete m_thread;
}
// Write any changes before deletion.
if (m_mod_storage_database)
m_mod_storage_database->endSave();
// Delete things in the reverse order of creation
delete m_emerge;
delete m_env;
delete m_rollback;
delete m_mod_storage_database;
delete m_banmanager;
delete m_itemdef;
delete m_nodedef;
delete m_craftdef;
// Deinitialize scripting
infostream << "Server: Deinitializing scripting" << std::endl;
delete m_script;
delete m_startup_server_map; // if available
delete m_game_settings;
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;
m_game_settings = Settings::createLayer(SL_GAME);
// Create world if it doesn't exist
try {
loadGameConfAndInitWorld(m_path_world,
fs::GetFilenameFromPath(m_path_world.c_str()),
m_gamespec, false);
} catch (const BaseException &e) {
throw ServerError(std::string("Failed to initialize world: ") + e.what());
}
// Create emerge manager
m_emerge = new EmergeManager(this, m_metrics_backend.get());
// Create ban manager
std::string ban_path = m_path_world + DIR_DELIM "ipban.txt";
m_banmanager = new BanManager(ban_path);
// Create mod storage database and begin a save for later
m_mod_storage_database = openModStorageDatabase(m_path_world);
m_mod_storage_database->beginSave();
m_modmgr = std::make_unique<ServerModManager>(m_path_world);
std::vector<ModSpec> unsatisfied_mods = m_modmgr->getUnsatisfiedMods();
// complain about mods with unsatisfied dependencies
if (!m_modmgr->isConsistent()) {
m_modmgr->printUnsatisfiedModsError();
warningstream
<< "You have unsatisfied dependencies, loading your world anyway. "
<< "This will become a fatal error in the future." << std::endl;
}
//lock environment
MutexAutoLock envlock(m_env_mutex);
// Create the Map (loads map_meta.txt, overriding configured mapgen params)
ServerMap *servermap = new ServerMap(m_path_world, this, m_emerge, m_metrics_backend.get());
m_startup_server_map = servermap;
// Initialize scripting
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::make_unique<ServerInventoryManager>();
m_script->loadMod(getBuiltinLuaPath() + DIR_DELIM "init.lua", BUILTIN_MOD_NAME);
m_gamespec.checkAndLog();
m_modmgr->loadMods(m_script);
// Read Textures and calculate sha1 sums
fillMediaCache();
// Apply item aliases in the node definition manager
m_nodedef->updateAliases(m_itemdef);
// Apply texture overrides from texturepack/override.txt
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) {
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 in cross-references
m_nodedef->resolveCrossrefs();
// init the recipe hashes to speed up crafting
m_craftdef->initHashes(this);
// Initialize Environment
m_startup_server_map = nullptr; // Ownership moved to ServerEnvironment
m_env = new ServerEnvironment(servermap, m_script, this,
m_path_world, m_metrics_backend.get());
m_inventory_mgr->setEnv(m_env);
m_clients.setEnv(m_env);
if (!servermap->settings_mgr.makeMapgenParams())
FATAL_ERROR("Couldn't create any mapgen type");
// Initialize mapgens
m_emerge->initMapgens(servermap->getMapgenParams());
if (g_settings->getBool("enable_rollback_recording")) {
// Create rollback manager
m_rollback = new RollbackManager(m_path_world, this);
}
// Give environment reference to scripting api
m_script->initializeEnvironment(m_env);
// Do this after regular script init is done
m_script->initAsync();
// Register us to receive map edit events
servermap->addEventReceiver(this);
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_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;
// Stop thread if already running
m_thread->stop();
// Initialize connection
m_con->SetTimeoutMs(30);
m_con->Serve(m_bind_addr);
// Start thread
m_thread->start();
// ASCII art for the win!
std::cerr
<< " __. __. __. " << std::endl
<< " _____ |__| ____ _____ / |_ _____ _____ / |_ " << std::endl
<< " / \\| |/ \\ / __ \\ _\\/ __ \\/ __> _\\" << std::endl
<< "| Y Y \\ | | \\ ___/| | | ___/\\___ \\| | " << std::endl
<< "|__|_| / |___| /\\______> | \\______>_____/| | " << std::endl
<< " \\/ \\/ \\/ \\/ \\/ " << std::endl;
actionstream << "World at [" << m_path_world << "]" << std::endl;
actionstream << "Server for gameid=\"" << m_gamespec.id
<< "\" listening on ";
m_bind_addr.print(actionstream);
actionstream << "." << std::endl;
}
void Server::stop()
{
infostream<<"Server: Stopping and waiting threads"<<std::endl;
// Stop threads (set run=false first so both start stopping)
m_thread->stop();
m_thread->wait();
infostream<<"Server: Threads stopped"<<std::endl;
}
void Server::step(float dtime)
{
// Limit a bit
if (dtime > 2.0)
dtime = 2.0;
{
MutexAutoLock lock(m_step_dtime_mutex);
m_step_dtime += dtime;
}
// Throw if fatal error occurred in thread
std::string async_err = m_async_fatal_error.get();
if (!async_err.empty()) {
if (!m_simple_singleplayer_mode) {
m_env->kickAllPlayers(SERVER_ACCESSDENIED_CRASH,
g_settings->get("kick_msg_crash"),
g_settings->getBool("ask_reconnect_on_crash"));
}
throw ServerError("AsyncErr: " + async_err);
}
}
void Server::AsyncRunStep(bool initial_step)
{
float dtime;
{
MutexAutoLock lock1(m_step_dtime_mutex);
dtime = m_step_dtime;
}
{
// Send blocks to clients
SendBlocks(dtime);
}
if((dtime < 0.001) && !initial_step)
return;
ScopeProfiler sp(g_profiler, "Server::AsyncRunStep()", SPT_AVG);
{
MutexAutoLock lock1(m_step_dtime_mutex);
m_step_dtime -= dtime;
}
/*
Update uptime
*/
m_uptime_counter->increment(dtime);
handlePeerChanges();
/*
Update time of day and overall game time
*/
m_env->setTimeOfDaySpeed(g_settings->getFloat("time_speed"));
/*
Send to clients at constant intervals
*/
m_time_of_day_send_timer -= dtime;
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);
}
{
MutexAutoLock lock(m_env_mutex);
// Figure out and report maximum lag to environment
float max_lag = m_env->getMaxLagEstimate();
max_lag *= 0.9998; // Decrease slowly (about half per 5 minutes)
if(dtime > max_lag){
if(dtime > 0.1 && dtime > max_lag * 2.0)
infostream<<"Server: Maximum lag peaked to "<<dtime
<<" s"<<std::endl;
max_lag = dtime;
}
m_env->reportMaxLagEstimate(max_lag);
// Step environment
m_env->step(dtime);
}
static const float map_timer_and_unload_dtime = 2.92;
if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
{
MutexAutoLock lock(m_env_mutex);
// Run Map's timers and unload unused data
ScopeProfiler sp(g_profiler, "Server: map timer and unload");
m_env->getMap().timerUpdate(map_timer_and_unload_dtime,
std::max(g_settings->getFloat("server_unload_unused_data_timeout"), 0.0f),
-1);
}
/*
Listen to the admin chat, if available
*/
if (m_admin_chat) {
if (!m_admin_chat->command_queue.empty()) {
MutexAutoLock lock(m_env_mutex);
while (!m_admin_chat->command_queue.empty()) {
ChatEvent *evt = m_admin_chat->command_queue.pop_frontNoEx();
handleChatInterfaceEvent(evt);
delete evt;
}
}
m_admin_chat->outgoing_queue.push_back(
new ChatEventTimeInfo(m_env->getGameTime(), m_env->getTimeOfDay()));
}
/*
Do background stuff
*/
/* Transform liquids */
m_liquid_transform_timer += dtime;
if(m_liquid_transform_timer >= m_liquid_transform_every)
{
m_liquid_transform_timer -= m_liquid_transform_every;
MutexAutoLock lock(m_env_mutex);
ScopeProfiler sp(g_profiler, "Server: liquid transform");
std::map<v3s16, MapBlock*> modified_blocks;
m_env->getServerMap().transformLiquids(modified_blocks, m_env);
/*
Set the modified blocks unsent for all the clients
*/
if (!modified_blocks.empty()) {
SetBlocksNotSent(modified_blocks);
}
}
m_clients.step(dtime);
// increase/decrease lag gauge gradually
if (m_lag_gauge->get() > dtime) {
m_lag_gauge->decrement(dtime/100);
} else {
m_lag_gauge->increment(dtime/100);
}
{
float &counter = m_step_pending_dyn_media_timer;
counter += dtime;
if (counter >= 5.0f) {
stepPendingDynMediaCallbacks(counter);
counter = 0;
}
}
#if USE_CURL
// send masterserver announce
{
float &counter = m_masterserver_timer;
if (!isSingleplayer() && (!counter || counter >= 300.0) &&
g_settings->getBool("server_announce")) {
ServerList::sendAnnounce(counter ? ServerList::AA_UPDATE :
ServerList::AA_START,
m_bind_addr.getPort(),
m_clients.getPlayerNames(),
m_uptime_counter->get(),
m_env->getGameTime(),
m_lag_gauge->get(),
m_gamespec.id,
Mapgen::getMapgenName(m_emerge->mgparams->mgtype),
m_modmgr->getMods(),
m_dedicated);
counter = 0.01;
}
counter += dtime;
}
#endif
/*
Check added and deleted active objects
*/
{
//infostream<<"Server: Checking added and deleted active objects"<<std::endl;
MutexAutoLock envlock(m_env_mutex);
{
ClientInterface::AutoLock clientlock(m_clients);
const RemoteClientMap &clients = m_clients.getClientList();
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 (client->getState() < CS_DefinitionsSent)
continue;
// This can happen if the client times out somehow
if (!m_env->getPlayer(client->peer_id))
continue;
PlayerSAO *playersao = getPlayerSAO(client->peer_id);
if (!playersao)
continue;
SendActiveObjectRemoveAdd(client, playersao);
}
}
// Write changes to the mod storage
m_mod_storage_save_timer -= dtime;
if (m_mod_storage_save_timer <= 0.0f) {
m_mod_storage_save_timer = g_settings->getFloat("server_map_save_interval");
m_mod_storage_database->endSave();
m_mod_storage_database->beginSave();
}
}
/*
Send object messages
*/
{
MutexAutoLock envlock(m_env_mutex);
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 count_reliable = 0, count_unreliable = 0;
for(;;) {
if (!m_env->getActiveObjectMessage(&aom))
break;
if (aom.reliable)
count_reliable++;
else
count_unreliable++;
std::vector<ActiveObjectMessage>* message_list = nullptr;
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 {
message_list = n->second;
}
message_list->push_back(std::move(aom));
}
m_aom_buffer_counter[0]->increment(count_reliable);
m_aom_buffer_counter[1]->increment(count_unreliable);
{
ClientInterface::AutoLock clientlock(m_clients);
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;
PlayerSAO *player = getPlayerSAO(client->peer_id);
// Go through all objects in message buffer
for (const auto &buffered_message : buffered_messages) {
// If object does not exist or is not known by client, skip it
u16 id = buffered_message.first;
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) {
// 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(serializeString16(aom.datastring));
}
}
/*
reliable_data and unreliable_data are now ready.
Send them.
*/
if (!reliable_data.empty()) {
SendActiveObjectMessages(client->peer_id, reliable_data);
}
if (!unreliable_data.empty()) {
SendActiveObjectMessages(client->peer_id, unreliable_data, false);
}
}
}
// Clear buffered_messages
for (auto &buffered_message : buffered_messages) {
delete buffered_message.second;
}
}
/*
Send queued-for-sending map edit events.
*/
{
// We will be accessing the environment
MutexAutoLock lock(m_env_mutex);
// Single change sending is disabled if queue size is big
bool disable_single_change_sending = false;
if(m_unsent_map_edit_queue.size() >= 4)
disable_single_change_sending = true;
const auto event_count = m_unsent_map_edit_queue.size();
m_map_edit_event_counter->increment(event_count);
// We'll log the amount of each
Profiler prof;
std::unordered_set<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();
// Players far away from the change are stored here.
// Instead of sending the changes, MapBlocks are set not sent
// for them.
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, &far_players,
disable_single_change_sending ? 5 : 30,
event->type == MEET_ADDNODE);
break;
case MEET_REMOVENODE:
prof.add("MEET_REMOVENODE", 1);
sendRemoveNode(event->p, &far_players,
disable_single_change_sending ? 5 : 30);
break;
case MEET_BLOCK_NODE_METADATA_CHANGED: {
prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
if (!event->is_private_change) {
node_meta_updates.emplace(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:
prof.add("MEET_OTHER", 1);
for (const v3s16 &modified_block : event->modified_blocks) {
m_clients.markBlockposAsNotSent(modified_block);
}
break;
default:
prof.add("unknown", 1);
warningstream << "Server: Unknown MapEditEvent "
<< ((u32)event->type) << std::endl;
break;
}
/*
Set blocks not sent to far players
*/
if (!far_players.empty()) {
// Convert list format to that wanted by SetBlocksNotSent
std::map<v3s16, MapBlock*> modified_blocks2;
for (const v3s16 &modified_block : event->modified_blocks) {
modified_blocks2[modified_block] =
m_env->getMap().getBlockNoCreateNoEx(modified_block);
}
// Set blocks not sent
for (const u16 far_player : far_players) {
if (RemoteClient *client = getClient(far_player))
client->SetBlocksNotSent(modified_blocks2);
}
}
delete event;
}
if (event_count >= 5) {
infostream << "Server: MapEditEvents:" << std::endl;
prof.print(infostream);
} else if (event_count != 0) {
verbosestream << "Server: MapEditEvents:" << std::endl;
prof.print(verbosestream);
}
// Send all metadata updates
if (!node_meta_updates.empty())
sendMetadataChanged(node_meta_updates);
}
/*
Trigger emerge thread
Doing this every 2s is left over from old code, unclear if this is still needed.
*/
{
float &counter = m_emergethread_trigger_timer;
counter -= dtime;
if (counter <= 0.0f) {
counter = 2.0f;
m_emerge->startThreads();