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-rw-r--r--src/sky.cpp78
1 files changed, 69 insertions, 9 deletions
diff --git a/src/sky.cpp b/src/sky.cpp
index 3477f0180..76dcac8b7 100644
--- a/src/sky.cpp
+++ b/src/sky.cpp
@@ -91,7 +91,7 @@ void Sky::render()
scale.setScale(core::vector3df(viewDistance, viewDistance, viewDistance));
driver->setTransform(video::ETS_WORLD, translate * scale);
-
+
if(m_sunlight_seen)
{
float sunsize = 0.07;
@@ -108,7 +108,7 @@ void Sky::render()
video::SColorf mooncolor_f(0.50, 0.57, 0.65, 1);
video::SColorf mooncolor2_f(0.85, 0.875, 0.9, 1);
- float nightlength = 0.41;
+ float nightlength = 0.415;
float wn = nightlength / 2;
float wicked_time_of_day = 0;
if(m_time_of_day > wn && m_time_of_day < 1.0 - wn)
@@ -129,8 +129,63 @@ void Sky::render()
const f32 o = 0.0f;
static const u16 indices[4] = {0,1,2,3};
video::S3DVertex vertices[4];
+
+ driver->setMaterial(m_materials[1]);
+
+ //video::SColor cloudyfogcolor(255,255,255,255);
+ video::SColor cloudyfogcolor = m_bgcolor;
+ //video::SColor cloudyfogcolor = m_bgcolor.getInterpolated(m_skycolor, 0.5);
+
+ // Draw far cloudy fog thing
+ for(u32 j=0; j<4; j++)
+ {
+ video::SColor c = cloudyfogcolor.getInterpolated(m_skycolor, 0.45);
+ vertices[0] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, t);
+ vertices[1] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, t);
+ vertices[2] = video::S3DVertex( 1, 0.12,-1, 0,0,1, c, o, o);
+ vertices[3] = video::S3DVertex(-1, 0.12,-1, 0,0,1, c, t, o);
+ for(u32 i=0; i<4; i++){
+ if(j==0)
+ // Don't switch
+ {}
+ else if(j==1)
+ // Switch from -Z (south) to +X (east)
+ vertices[i].Pos.rotateXZBy(90);
+ else if(j==2)
+ // Switch from -Z (south) to -X (west)
+ vertices[i].Pos.rotateXZBy(-90);
+ else
+ // Switch from -Z (south) to -Z (north)
+ vertices[i].Pos.rotateXZBy(-180);
+ }
+ driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
+ }
+ for(u32 j=0; j<4; j++)
+ {
+ video::SColor c = cloudyfogcolor;
+ vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
+ vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
+ vertices[2] = video::S3DVertex( 1, 0.08,-1, 0,0,1, c, o, o);
+ vertices[3] = video::S3DVertex(-1, 0.08,-1, 0,0,1, c, t, o);
+ for(u32 i=0; i<4; i++){
+ if(j==0)
+ // Don't switch
+ {}
+ else if(j==1)
+ // Switch from -Z (south) to +X (east)
+ vertices[i].Pos.rotateXZBy(90);
+ else if(j==2)
+ // Switch from -Z (south) to -X (west)
+ vertices[i].Pos.rotateXZBy(-90);
+ else
+ // Switch from -Z (south) to -Z (north)
+ vertices[i].Pos.rotateXZBy(-180);
+ }
+ driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
+ }
driver->setMaterial(m_materials[2]);
+
{
float mid1 = 0.25;
float mid = (wicked_time_of_day < 0.5 ? mid1 : (1.0 - mid1));
@@ -314,10 +369,12 @@ void Sky::render()
for(u32 j=0; j<2; j++)
{
- vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, m_skycolor, t, t);
- vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, m_skycolor, o, t);
- vertices[2] = video::S3DVertex( 1,-0.02,-1, 0,0,1, m_skycolor, o, o);
- vertices[3] = video::S3DVertex(-1,-0.02,-1, 0,0,1, m_skycolor, t, o);
+ //video::SColor c = m_skycolor;
+ video::SColor c = cloudyfogcolor;
+ vertices[0] = video::S3DVertex(-1,-1.0,-1, 0,0,1, c, t, t);
+ vertices[1] = video::S3DVertex( 1,-1.0,-1, 0,0,1, c, o, t);
+ vertices[2] = video::S3DVertex( 1,-0.02,-1, 0,0,1, c, o, o);
+ vertices[3] = video::S3DVertex(-1,-0.02,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
//if(wicked_time_of_day < 0.5)
if(j==0)
@@ -353,14 +410,17 @@ void Sky::update(float time_of_day, float time_brightness,
m_time_brightness = time_brightness;
m_sunlight_seen = sunlight_seen;
- bool is_dawn = (time_brightness >= 0.20 && time_brightness < 0.50);
+ bool is_dawn = (time_brightness >= 0.20 && time_brightness < 0.35);
- video::SColorf bgcolor_bright_normal_f(170./255,200./255,230./255, 1.0);
+ //video::SColorf bgcolor_bright_normal_f(170./255,200./255,230./255, 1.0);
+ video::SColorf bgcolor_bright_normal_f(155./255,193./255,240./255, 1.0);
video::SColorf bgcolor_bright_indoor_f(100./255,100./255,100./255, 1.0);
//video::SColorf bgcolor_bright_dawn_f(0.666,200./255*0.7,230./255*0.5,1.0);
//video::SColorf bgcolor_bright_dawn_f(0.666,0.549,0.220,1.0);
//video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.0, 1.0);
- video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.2,1.0);
+ //video::SColorf bgcolor_bright_dawn_f(0.666*1.2,0.549*1.0,0.220*1.2,1.0);
+ video::SColorf bgcolor_bright_dawn_f
+ (155./255*1.2,193./255,240./255, 1.0);
video::SColorf skycolor_bright_normal_f =
video::SColor(255, 140, 186, 250);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 18:34:11 +0000
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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU 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 "serverobject.h"
#include "genericobject.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_sao.h"
#include "mods.h"
#include "event_manager.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 "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"

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

	m_server->AsyncRunStep(true);

	while (!stopRequested()) {
		try {
			m_server->AsyncRunStep();

			m_server->Receive();

		} catch (con::NoIncomingDataException &e) {
		} 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(
					"ServerThread::run Lua: " + std::string(e.what()));
		}
	}

	END_DEBUG_EXCEPTION_HANDLER

	return nullptr;
}

v3f ServerSoundParams::getPos(ServerEnvironment *env, bool *pos_exists) const
{
	if(pos_exists) *pos_exists = false;
	switch(type){
	case SSP_LOCAL:
		return v3f(0,0,0);
	case SSP_POSITIONAL:
		if(pos_exists) *pos_exists = true;
		return pos;
	case SSP_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);
}



/*
	Server
*/

Server::Server(
		const std::string &path_world,
		const SubgameSpec &gamespec,
		bool simple_singleplayer_mode,
		Address bind_addr,
		bool dedicated,
		ChatInterface *iface
	):
	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_event(new EventManager()),
	m_uptime(0),
	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())
		throw ServerError("Supplied empty world path");

	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;
	else
		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))
		throw ServerError("Failed to initialize world");

	// Create server thread
	m_thread = new ServerThread(this);

	// Create emerge manager
	m_emerge = new EmergeManager(this);

	// Create ban manager
	std::string ban_path = m_path_world + DIR_DELIM "ipban.txt";
	m_banmanager = new BanManager(ban_path);

	ServerModConfiguration modconf(m_path_world);
	m_mods = modconf.getMods();
	std::vector<ModSpec> unsatisfied_mods = modconf.getUnsatisfiedMods();
	// complain about mods with unsatisfied dependencies
	if (!modconf.isConsistent()) {
		modconf.printUnsatisfiedModsError();
	}

	//lock environment
	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);

	// Initialize scripting
	infostream<<"Server: Initializing Lua"<<std::endl;

	m_script = new ServerScripting(this);

	m_script->loadMod(getBuiltinLuaPath() + DIR_DELIM "init.lua", BUILTIN_MOD_NAME);

	// Print mods
	infostream << "Server: Loading mods: ";
	for (std::vector<ModSpec>::const_iterator i = m_mods.begin();
			i != m_mods.end(); ++i) {
		infostream << (*i).name << " ";
	}
	infostream << std::endl;
	// Load and run "mod" scripts
	for (std::vector<ModSpec>::const_iterator it = m_mods.begin();
			it != m_mods.end(); ++it) {
		const ModSpec &mod = *it;
		if (!string_allowed(mod.name, MODNAME_ALLOWED_CHARS)) {
			throw ModError("Error loading mod \"" + mod.name +
				"\": Mod name does not follow naming conventions: "
				"Only characters [a-z0-9_] are allowed.");
		}
		std::string script_path = mod.path + DIR_DELIM + "init.lua";
		infostream << "  [" << padStringRight(mod.name, 12) << "] [\""
				<< script_path << "\"]" << std::endl;
		m_script->loadMod(script_path, mod.name);
	}

	// 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
	for (const auto &path : fs::GetRecursiveDirs(g_settings->get("texture_path")))
		m_nodedef->applyTextureOverrides(path + DIR_DELIM + "override.txt");

	m_nodedef->setNodeRegistrationStatus(true);

	// Perform pending node name resolutions
	m_nodedef->runNodeResolveCallbacks();

	// unmap node names for connected nodeboxes
	m_nodedef->mapNodeboxConnections();

	// init the recipe hashes to speed up crafting
	m_craftdef->initHashes(this);

	// Initialize Environment
	m_env = new ServerEnvironment(servermap, m_script, this, m_path_world);

	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());

	m_enable_rollback_recording = g_settings->getBool("enable_rollback_recording");
	if (m_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);

	// Register us to receive map edit events
	servermap->addEventReceiver(this);

	// If file exists, load environment metadata
	if (fs::PathExists(m_path_world + DIR_DELIM "env_meta.txt")) {
		infostream << "Server: Loading environment metadata" << std::endl;
		m_env->loadMeta();
	} else {
		m_env->loadDefaultMeta();
	}

	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);

		// Execute script shutdown hooks
		m_script->on_shutdown();

		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);

		infostream << "Server: Saving environment metadata" << std::endl;
		m_env->saveMeta();
	}

	// Stop threads
	stop();
	delete m_thread;

	// stop all emerge threads before deleting players that may have
	// requested blocks to be emerged
	m_emerge->stopThreads();

	// Delete things in the reverse order of creation
	delete m_emerge;
	delete m_env;
	delete m_rollback;
	delete m_banmanager;
	delete m_event;
	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;
	}
}

void Server::start()
{
	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!
	actionstream
		<< "        .__               __                   __   " << 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.serializeString() << ":"
			<< m_bind_addr.getPort() << "." << 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_emergethread.setRun(false);
	m_thread->wait();
	//m_emergethread.stop();

	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)
{
	g_profiler->add("Server::AsyncRunStep (num)", 1);

	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;

	g_profiler->add("Server::AsyncRunStep with dtime (num)", 1);

	//infostream<<"Server steps "<<dtime<<std::endl;
	//infostream<<"Server::AsyncRunStep(): dtime="<<dtime<<std::endl;

	{
		MutexAutoLock lock1(m_step_dtime_mutex);
		m_step_dtime -= dtime;
	}

	/*
		Update uptime
	*/
	{
		m_uptime.set(m_uptime.get() + 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);
	}

	{
		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
		ScopeProfiler sp(g_profiler, "SEnv step");
		ScopeProfiler sp2(g_profiler, "SEnv step avg", SPT_AVG);
		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,
			g_settings->getFloat("server_unload_unused_data_timeout"),
			U32_MAX);
	}

	/*
		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->getMap().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);

	m_lag += (m_lag > dtime ? -1 : 1) * dtime/100;
#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.get(),
					m_env->getGameTime(),
					m_lag,
					m_gamespec.id,
					Mapgen::getMapgenName(m_emerge->mgparams->mgtype),
					m_mods,
					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);

		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;

		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
				continue;
			}

			PlayerSAO *playersao = player->getPlayerSAO();
			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;
		}
		m_clients.unlock();

		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");
			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());
				}
			}
		}
	}

	/*
		Send object messages
	*/
	{
		MutexAutoLock envlock(m_env_mutex);
		ScopeProfiler sp(g_profiler, "Server: sending object messages");

		// Key = object id
		// Value = data sent by object
		std::unordered_map<u16, std::vector<ActiveObjectMessage>*> buffered_messages;

		// Get active object messages from environment
		for(;;) {
			ActiveObjectMessage aom = m_env->getActiveObjectMessage();
			if (aom.id == 0)
				break;

			std::vector<ActiveObjectMessage>* message_list = nullptr;
			std::unordered_map<u16, std::vector<ActiveObjectMessage>* >::iterator n;
			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(aom);
		}

		m_clients.lock();
		const RemoteClientMap &clients = m_clients.getClientList();
		// Route data to every client
		for (const auto &client_it : clients) {
			RemoteClient *client = client_it.second;
			std::string reliable_data;
			std::string unreliable_data;
			// Go through all objects in message buffer
			for (const auto &buffered_message : buffered_messages) {
				// If object is not known by client, skip it
				u16 id = buffered_message.first;
				if (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;
				}
			}
			/*
				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);
			}
		}
		m_clients.unlock();

		// 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);

		// Don't send too many at a time
		//u32 count = 0;

		// Single change sending is disabled if queue size is not small
		bool disable_single_change_sending = false;
		if(m_unsent_map_edit_queue.size() >= 4)
			disable_single_change_sending = true;

		int event_count = m_unsent_map_edit_queue.size();

		// We'll log the amount of each
		Profiler prof;

		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::vector<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,
						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);
				break;
			case MEET_BLOCK_NODE_METADATA_CHANGED:
				infostream << "Server: MEET_BLOCK_NODE_METADATA_CHANGED" << std::endl;
						prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
						setBlockNotSent(event->p);
				break;
			case MEET_OTHER:
				infostream << "Server: MEET_OTHER" << std::endl;
				prof.add("MEET_OTHER", 1);
				for (const v3s16 &modified_block : event->modified_blocks) {
					setBlockNotSent(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);
		}

	}

	/*
		Trigger emergethread (it somehow gets to a non-triggered but
		bysy state sometimes)
	*/
	{
		float &counter = m_emergethread_trigger_timer;
		counter += dtime;
		if (counter >= 2.0) {
			counter = 0.0;

			m_emerge->startThreads();
		}
	}

	// Save map, players and auth stuff
	{
		float &counter = m_savemap_timer;
		counter += dtime;
		static thread_local const float save_interval =
			g_settings->getFloat("server_map_save_interval");
		if (counter >= save_interval) {
			counter = 0.0;
			MutexAutoLock lock(m_env_mutex);

			ScopeProfiler sp(g_profiler, "Server: saving stuff");

			// Save ban file
			if (m_banmanager->isModified()) {
				m_banmanager->save();
			}

			// Save changed parts of map
			m_env->getMap().save(MOD_STATE_WRITE_NEEDED);

			// Save players
			m_env->saveLoadedPlayers();

			// Save environment metadata
			m_env->saveMeta();
		}
	}

	// 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;
		}
	}
}

void Server::Receive()
{
	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
	}
}

PlayerSAO* Server::StageTwoClientInit(session_t peer_id)
{
	std::string playername;
	PlayerSAO *playersao = NULL;
	m_clients.lock();
	try {
		RemoteClient* client = m_clients.lockedGetClientNoEx(peer_id, CS_InitDone);
		if (client) {
			playername = client->getName();
			playersao = emergePlayer(playername.c_str(), peer_id, client->net_proto_version);
		}
	} catch (std::exception &e) {
		m_clients.unlock();
		throw;
	}
	m_clients.unlock();

	RemotePlayer *player = m_env->getPlayer(playername.c_str());

	// If failed, cancel
	if (!playersao || !player) {
		if (player && player->getPeerId() != PEER_ID_INEXISTENT) {
			actionstream << "Server: Failed to emerge player \"" << playername
					<< "\" (player allocated to an another client)" << std::endl;
			DenyAccess_Legacy(peer_id, L"Another client is connected with this "
					L"name. If your client closed unexpectedly, try again in "
					L"a minute.");
		} else {
			errorstream << "Server: " << playername << ": Failed to emerge player"
					<< std::endl;
			DenyAccess_Legacy(peer_id, L"Could not allocate player.");
		}
		return NULL;
	}

	/*
		Send complete position information
	*/
	SendMovePlayer(peer_id);

	// Send privileges
	SendPlayerPrivileges(peer_id);

	// Send inventory formspec
	SendPlayerInventoryFormspec(peer_id);

	// Send inventory
	SendInventory(playersao);

	// Send HP or death screen
	if (playersao->isDead())
		SendDeathscreen(peer_id, false, v3f(0,0,0));
	else
		SendPlayerHPOrDie(playersao);

	// 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
	*/
	{
		const std::vector<std::string> &names = m_clients.getPlayerNames();

		actionstream << player->getName() << " joins game. List of players: ";

		for (const std::string &name : names) {
			actionstream << name << " ";
		}

		actionstream << player->getName() <<std::endl;
	}
	return playersao;
}

inline void Server::handleCommand(NetworkPacket* pkt)
{
	const ToServerCommandHandler& opHandle = toServerCommandTable[pkt->getCommand()];
	(this->*opHandle.handler)(pkt);
}

void Server::ProcessData(NetworkPacket *pkt)
{
	// Environment is locked first.
	MutexAutoLock envlock(m_env_mutex);

	ScopeProfiler sp(g_profiler, "Server::ProcessData");
	u32 peer_id = pkt->getPeerId();

	try {
		Address address = getPeerAddress(peer_id);
		std::string addr_s = address.serializeString();

		if(m_banmanager->isIpBanned(addr_s)) {
			std::string ban_name = m_banmanager->getBanName(addr_s);
			infostream << "Server: A banned client tried to connect from "
					<< addr_s << "; banned name was "
					<< ban_name << std::endl;
			// This actually doesn't seem to transfer to the client
			DenyAccess_Legacy(peer_id, L"Your ip is banned. Banned name was "
					+ utf8_to_wide(ban_name));
			return;
		}
	}
	catch(con::PeerNotFoundException &e) {
		/*
		 * no peer for this packet found
		 * most common reason is peer timeout, e.g. peer didn't
		 * respond for some time, your server was overloaded or
		 * things like that.
		 */
		infostream << "Server::ProcessData(): Canceling: peer "
				<< peer_id << " not found" << std::endl;
		return;
	}

	try {
		ToServerCommand command = (ToServerCommand) pkt->getCommand();

		// Command must be handled into ToServerCommandHandler
		if (command >= TOSERVER_NUM_MSG_TYPES) {
			infostream << "Server: Ignoring unknown command "
					 << command << std::endl;
			return;
		}

		if (toServerCommandTable[command].state == TOSERVER_STATE_NOT_CONNECTED) {
			handleCommand(pkt);
			return;
		}

		u8 peer_ser_ver = getClient(peer_id, CS_InitDone)->serialization_version;

		if(peer_ser_ver == SER_FMT_VER_INVALID) {
			errorstream << "Server::ProcessData(): Cancelling: Peer"
					" serialization format invalid or not initialized."
					" Skipping incoming command=" << command << std::endl;
			return;
		}

		/* Handle commands related to client startup */
		if (toServerCommandTable[command].state == TOSERVER_STATE_STARTUP) {
			handleCommand(pkt);
			return;
		}

		if (m_clients.getClientState(peer_id) < CS_Active) {
			if (command == TOSERVER_PLAYERPOS) return;

			errorstream << "Got packet command: " << command << " for peer id "
					<< peer_id << " but client isn't active yet. Dropping packet "
					<< std::endl;
			return;
		}

		handleCommand(pkt);
	} catch (SendFailedException &e) {
		errorstream << "Server::ProcessData(): SendFailedException: "
				<< "what=" << e.what()
				<< std::endl;
	} catch (PacketError &e) {
		actionstream << "Server::ProcessData(): PacketError: "
				<< "what=" << e.what()
				<< std::endl;
	}
}

void Server::setTimeOfDay(u32 time)
{
	m_env->setTimeOfDay(time);
	m_time_of_day_send_timer = 0;
}

void Server::onMapEditEvent(MapEditEvent *event)
{
	if(m_ignore_map_edit_events)
		return;
	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);

		setBlockNotSent(blockpos);
	}
		break;
	case InventoryLocation::DETACHED:
	{
		sendDetachedInventory(loc.name,PEER_ID_INEXISTENT);
	}
		break;
	default:
		sanity_check(false); // abort
		break;
	}
}

void Server::SetBlocksNotSent(std::map<v3s16, MapBlock *>& block)
{
	std::vector<session_t> clients = m_clients.getClientIDs();
	m_clients.lock();
	// Set the modified blocks unsent for all the clients
	for (const session_t client_id : clients) {
			if (RemoteClient *client = m_clients.lockedGetClientNoEx(client_id))
				client->SetBlocksNotSent(block);
	}
	m_clients.unlock();
}

void Server::peerAdded(con::Peer *peer)
{
	verbosestream<<"Server::peerAdded(): peer->id="
			<<peer->id<<std::endl;

	m_peer_change_queue.push(con::PeerChange(con::PEER_ADDED, peer->id, false));
}

void Server::deletingPeer(con::Peer *peer, bool timeout)
{
	verbosestream<<"Server::deletingPeer(): peer->id="
			<<peer->id<<", timeout="<<timeout<<std::endl;

	m_clients.event(peer->id, CSE_Disconnect);
	m_peer_change_queue.push(con::PeerChange(con::PEER_REMOVED, peer->id, timeout));
}

bool Server::getClientConInfo(session_t peer_id, con::rtt_stat_type type, float* retval)
{
	*retval = m_con->getPeerStat(peer_id,type);
	return *retval != -1;
}

bool Server::getClientInfo(
		session_t    peer_id,
		ClientState* state,
		u32*         uptime,
		u8*          ser_vers,
		u16*         prot_vers,
		u8*          major,
		u8*          minor,
		u8*          patch,
		std::string* vers_string
	)
{
	*state = m_clients.getClientState(peer_id);
	m_clients.lock();
	RemoteClient* client = m_clients.lockedGetClientNoEx(peer_id, CS_Invalid);

	if (!client) {
		m_clients.unlock();
		return false;
	}

	*uptime = client->uptime();
	*ser_vers = client->serialization_version;
	*prot_vers = client->net_proto_version;

	*major = client->getMajor();
	*minor = client->getMinor();
	*patch = client->getPatch();
	*vers_string = client->getPatch();

	m_clients.unlock();

	return true;
}

void Server::handlePeerChanges()
{
	while(!m_peer_change_queue.empty())
	{
		con::PeerChange c = m_peer_change_queue.front();
		m_peer_change_queue.pop();

		verbosestream<<"Server: Handling peer change: "
				<<"id="<<c.peer_id<<", timeout="<<c.timeout
				<<std::endl;

		switch(c.type)
		{
		case con::PEER_ADDED:
			m_clients.CreateClient(c.peer_id);
			break;

		case con::PEER_REMOVED:
			DeleteClient(c.peer_id, c.timeout?CDR_TIMEOUT:CDR_LEAVE);
			break;

		default:
			FATAL_ERROR("Invalid peer change event received!");
			break;
		}
	}
}

void Server::printToConsoleOnly(const std::string &text)
{
	if (m_admin_chat) {
		m_admin_chat->outgoing_queue.push_back(
			new ChatEventChat("", utf8_to_wide(text)));
	} else {
		std::cout << text << std::endl;
	}
}

void Server::Send(NetworkPacket *pkt)
{
	Send(pkt->getPeerId(), pkt);
}

void Server::Send(session_t peer_id, NetworkPacket *pkt)
{
	m_clients.send(peer_id,
		clientCommandFactoryTable[pkt->getCommand()].channel,
		pkt,
		clientCommandFactoryTable[pkt->getCommand()].reliable);
}

void Server::SendMovement(session_t peer_id)
{
	std::ostringstream os(std::ios_base::binary);

	NetworkPacket pkt(TOCLIENT_MOVEMENT, 12 * sizeof(float), peer_id);

	pkt << g_settings->getFloat("movement_acceleration_default");
	pkt << g_settings->getFloat("movement_acceleration_air");
	pkt << g_settings->getFloat("movement_acceleration_fast");
	pkt << g_settings->getFloat("movement_speed_walk");
	pkt << g_settings->getFloat("movement_speed_crouch");
	pkt << g_settings->getFloat("movement_speed_fast");
	pkt << g_settings->getFloat("movement_speed_climb");
	pkt << g_settings->getFloat("movement_speed_jump");
	pkt << g_settings->getFloat("movement_liquid_fluidity");
	pkt << g_settings->getFloat("movement_liquid_fluidity_smooth");
	pkt << g_settings->getFloat("movement_liquid_sink");
	pkt << g_settings->getFloat("movement_gravity");

	Send(&pkt);
}

void Server::SendPlayerHPOrDie(PlayerSAO *playersao)
{
	if (!g_settings->getBool("enable_damage"))
		return;

	session_t peer_id   = playersao->getPeerID();
	bool is_alive = playersao->getHP() > 0;

	if (is_alive)
		SendPlayerHP(peer_id);
	else
		DiePlayer(peer_id);
}

void Server::SendHP(session_t peer_id, u16 hp)
{
	NetworkPacket pkt(TOCLIENT_HP, 1, peer_id);
	pkt << hp;
	Send(&pkt);
}

void Server::SendBreath(session_t peer_id, u16 breath)
{
	NetworkPacket pkt(TOCLIENT_BREATH, 2, peer_id);
	pkt << (u16) breath;
	Send(&pkt);
}

void Server::SendAccessDenied(session_t peer_id, AccessDeniedCode reason,
		const std::string &custom_reason, bool reconnect)
{
	assert(reason < SERVER_ACCESSDENIED_MAX);

	NetworkPacket pkt(TOCLIENT_ACCESS_DENIED, 1, peer_id);
	pkt << (u8)reason;
	if (reason == SERVER_ACCESSDENIED_CUSTOM_STRING)
		pkt << custom_reason;
	else if (reason == SERVER_ACCESSDENIED_SHUTDOWN ||
			reason == SERVER_ACCESSDENIED_CRASH)
		pkt << custom_reason << (u8)reconnect;
	Send(&pkt);
}

void Server::SendAccessDenied_Legacy(session_t peer_id,const std::wstring &reason)
{
	NetworkPacket pkt(TOCLIENT_ACCESS_DENIED_LEGACY, 0, peer_id);
	pkt << reason;
	Send(&pkt);
}

void Server::SendDeathscreen(session_t peer_id, bool set_camera_point_target,
		v3f camera_point_target)
{
	NetworkPacket pkt(TOCLIENT_DEATHSCREEN, 1 + sizeof(v3f), peer_id);
	pkt << set_camera_point_target << camera_point_target;
	Send(&pkt);
}

void Server::SendItemDef(session_t peer_id,
		IItemDefManager *itemdef, u16 protocol_version)
{
	NetworkPacket pkt(TOCLIENT_ITEMDEF, 0, peer_id);

	/*
		u16 command
		u32 length of the next item
		zlib-compressed serialized ItemDefManager
	*/
	std::ostringstream tmp_os(std::ios::binary);
	itemdef->serialize(tmp_os, protocol_version);
	std::ostringstream tmp_os2(std::ios::binary);
	compressZlib(tmp_os.str(), tmp_os2);
	pkt.putLongString(tmp_os2.str());

	// Make data buffer
	verbosestream << "Server: Sending item definitions to id(" << peer_id
			<< "): size=" << pkt.getSize() << std::endl;

	Send(&pkt);
}

void Server::SendNodeDef(session_t peer_id,
		INodeDefManager *nodedef, u16 protocol_version)
{
	NetworkPacket pkt(TOCLIENT_NODEDEF, 0, peer_id);

	/*
		u16 command
		u32 length of the next item
		zlib-compressed serialized NodeDefManager
	*/
	std::ostringstream tmp_os(std::ios::binary);
	nodedef->serialize(tmp_os, protocol_version);
	std::ostringstream tmp_os2(std::ios::binary);
	compressZlib(tmp_os.str(), tmp_os2);

	pkt.putLongString(tmp_os2.str());

	// Make data buffer
	verbosestream << "Server: Sending node definitions to id(" << peer_id
			<< "): size=" << pkt.getSize() << std::endl;

	Send(&pkt);
}

/*
	Non-static send methods
*/

void Server::SendInventory(PlayerSAO* playerSAO)
{
	UpdateCrafting(playerSAO->getPlayer());

	/*
		Serialize it
	*/

	NetworkPacket pkt(TOCLIENT_INVENTORY, 0, playerSAO->getPeerID());

	std::ostringstream os;
	playerSAO->getInventory()->serialize(os);

	std::string s = os.str();

	pkt.putRawString(s.c_str(), s.size());
	Send(&pkt);
}

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;

	if (peer_id != PEER_ID_INEXISTENT) {
		RemotePlayer *player = m_env->getPlayer(peer_id);
		if (!player)
			return;

		Send(&pkt);
	} else {
		m_clients.sendToAll(&pkt);
	}
}

void Server::SendShowFormspecMessage(session_t peer_id, const std::string &formspec,
                                     const std::string &formname)
{
	NetworkPacket pkt(TOCLIENT_SHOW_FORMSPEC, 0 , peer_id);
	if (formspec.empty()){
		//the client should close the formspec
		pkt.putLongString("");
	} else {
		pkt.putLongString(FORMSPEC_VERSION_STRING + formspec);
	}
	pkt << formname;

	Send(&pkt);
}

// 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)
{
	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();

		for (const session_t client_id : clients) {
			RemotePlayer *player = m_env->getPlayer(client_id);
			if (!player)
				continue;

			PlayerSAO *sao = player->getPlayerSAO();
			if (!sao)
				continue;

			// Do not send to distant clients
			if (sao->getBasePosition().getDistanceFrom(pos * BS) > radius)
				continue;

			SendSpawnParticle(client_id, player->protocol_version,
					pos, velocity, acceleration,
					expirationtime, size, collisiondetection,
					collision_removal, vertical, texture, animation, glow);
		}
		return;
	}

	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;

	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)
{
	if (peer_id == PEER_ID_INEXISTENT) {
		// This sucks and should be replaced:
		std::vector<session_t> clients = m_clients.getClientIDs();
		for (const session_t client_id : clients) {
			RemotePlayer *player = m_env->getPlayer(client_id);
			if (!player)
				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);
		}
		return;
	}

	NetworkPacket pkt(TOCLIENT_ADD_PARTICLESPAWNER, 0, peer_id);

	pkt << amount << spawntime << minpos << maxpos << minvel << maxvel
			<< minacc << maxacc << minexptime << maxexptime << minsize
			<< maxsize << collisiondetection;

	pkt.putLongString(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;

	Send(&pkt);
}

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)
		Send(&pkt);
	else
		m_clients.sendToAll(&pkt);

}

void Server::SendHUDAdd(session_t peer_id, u32 id, HudElement *form)
{
	NetworkPacket pkt(TOCLIENT_HUDADD, 0 , peer_id);

	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;

	Send(&pkt);
}

void Server::SendHUDRemove(session_t peer_id, u32 id)
{
	NetworkPacket pkt(TOCLIENT_HUDRM, 4, peer_id);
	pkt << id;
	Send(&pkt);
}

void Server::SendHUDChange(session_t peer_id, u32 id, HudElementStat stat, void *value)
{
	NetworkPacket pkt(TOCLIENT_HUDCHANGE, 0, peer_id);
	pkt << id << (u8) stat;

	switch (stat) {
		case HUD_STAT_POS:
		case HUD_STAT_SCALE:
		case HUD_STAT_ALIGN:
		case HUD_STAT_OFFSET:
			pkt << *(v2f *) value;
			break;
		case HUD_STAT_NAME:
		case HUD_STAT_TEXT:
			pkt << *(std::string *) value;
			break;
		case HUD_STAT_WORLD_POS:
			pkt << *(v3f *) value;
			break;
		case HUD_STAT_SIZE:
			pkt << *(v2s32 *) value;
			break;
		case HUD_STAT_NUMBER:
		case HUD_STAT_ITEM:
		case HUD_STAT_DIR:
		default:
			pkt << *(u32 *) value;
			break;
	}

	Send(&pkt);
}

void Server::SendHUDSetFlags(session_t peer_id, u32 flags, u32 mask)
{
	NetworkPacket pkt(TOCLIENT_HUD_SET_FLAGS, 4 + 4, peer_id);

	flags &= ~(HUD_FLAG_HEALTHBAR_VISIBLE | HUD_FLAG_BREATHBAR_VISIBLE);

	pkt << flags << mask;

	Send(&pkt);
}

void Server::SendHUDSetParam(session_t peer_id, u16 param, const std::string &value)
{
	NetworkPacket pkt(TOCLIENT_HUD_SET_PARAM, 0, peer_id);
	pkt << param << value;
	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)
{
	NetworkPacket pkt(TOCLIENT_SET_SKY, 0, peer_id);
	pkt << bgcolor << type << (u16) params.size();

	for (const std::string &param : params)
		pkt << param;

	pkt << clouds;

	Send(&pkt);
}

void Server::SendCloudParams(session_t peer_id, float density,
		const video::SColor &color_bright,
		const video::SColor &color_ambient,
		float height,
		float thickness,
		const v2f &speed)
{
	NetworkPacket pkt(TOCLIENT_CLOUD_PARAMS, 0, peer_id);
	pkt << density << color_bright << color_ambient
			<< height << thickness << speed;

	Send(&pkt);
}

void Server::SendOverrideDayNightRatio(session_t peer_id, bool do_override,
		float ratio)
{
	NetworkPacket pkt(TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO,
			1 + 2, peer_id);

	pkt << do_override << (u16) (ratio * 65535);

	Send(&pkt);
}

void Server::SendTimeOfDay(session_t peer_id, u16 time, f32 time_speed)
{
	NetworkPacket pkt(TOCLIENT_TIME_OF_DAY, 0, peer_id);
	pkt << time << time_speed;

	if (peer_id == PEER_ID_INEXISTENT) {
		m_clients.sendToAll(&pkt);
	}
	else {
		Send(&pkt);
	}
}

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;

	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);
}

void Server::SendPlayerBreath(PlayerSAO *sao)
{
	assert(sao);

	m_script->player_event(sao, "breath_changed");
	SendBreath(sao->getPeerID(), sao->getBreath());
}

void Server::SendMovePlayer(session_t peer_id)
{
	RemotePlayer *player = m_env->getPlayer(peer_id);
	assert(player);
	PlayerSAO *sao = player->getPlayerSAO();
	assert(sao);

	NetworkPacket pkt(TOCLIENT_MOVE_PLAYER, sizeof(v3f) + sizeof(f32) * 2, peer_id);
	pkt << sao->getBasePosition() << sao->getPitch() << sao->getYaw();

	{
		v3f pos = sao->getBasePosition();
		verbosestream << "Server: Sending TOCLIENT_MOVE_PLAYER"
				<< " pos=(" << pos.X << "," << pos.Y << "," << pos.Z << ")"
				<< " pitch=" << sao->getPitch()
				<< " yaw=" << sao->getYaw()
				<< std::endl;
	}

	Send(&pkt);
}

void Server::SendLocalPlayerAnimations(session_t peer_id, v2s32 animation_frames[4],
		f32 animation_speed)
{
	NetworkPacket pkt(TOCLIENT_LOCAL_PLAYER_ANIMATIONS, 0,
		peer_id);

	pkt << animation_frames[0] << animation_frames[1] << animation_frames[2]
			<< animation_frames[3] << animation_speed;

	Send(&pkt);
}

void Server::SendEyeOffset(session_t peer_id, v3f first, v3f third)
{
	NetworkPacket pkt(TOCLIENT_EYE_OFFSET, 0, peer_id);
	pkt << first << third;
	Send(&pkt);
}

void Server::SendPlayerPrivileges(session_t peer_id)
{
	RemotePlayer *player = m_env->getPlayer(peer_id);
	assert(player);
	if(player->getPeerId() == PEER_ID_INEXISTENT)
		return;

	std::set<std::string> privs;
	m_script->getAuth(player->getName(), NULL, &privs);

	NetworkPacket pkt(TOCLIENT_PRIVILEGES, 0, peer_id);
	pkt << (u16) privs.size();

	for (const std::string &priv : privs) {
		pkt << priv;
	}

	Send(&pkt);
}

void Server::SendPlayerInventoryFormspec(session_t peer_id)
{
	RemotePlayer *player = m_env->getPlayer(peer_id);
	assert(player);
	if(player->getPeerId() == PEER_ID_INEXISTENT)
		return;

	NetworkPacket pkt(TOCLIENT_INVENTORY_FORMSPEC, 0, peer_id);
	pkt.putLongString(FORMSPEC_VERSION_STRING + player->inventory_formspec);
	Send(&pkt);
}

u32 Server::SendActiveObjectRemoveAdd(session_t peer_id, const std::string &datas)
{
	NetworkPacket pkt(TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD, datas.size(), peer_id);
	pkt.putRawString(datas.c_str(), datas.size());
	Send(&pkt);
	return pkt.getSize();
}

void Server::SendActiveObjectMessages(session_t peer_id, const std::string &datas,
		bool reliable)
{
	NetworkPacket pkt(TOCLIENT_ACTIVE_OBJECT_MESSAGES,
			datas.size(), peer_id);

	pkt.putRawString(datas.c_str(), datas.size());

	m_clients.send(pkt.getPeerId(),
			reliable ? clientCommandFactoryTable[pkt.getCommand()].channel : 1,
			&pkt, reliable);
}

void Server::SendCSMFlavourLimits(session_t peer_id)
{
	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;
	Send(&pkt);
}

s32 Server::playSound(const SimpleSoundSpec &spec,
		const ServerSoundParams &params)
{
	// Find out initial position of sound
	bool pos_exists = false;
	v3f pos = params.getPos(m_env, &pos_exists);
	// If position is not found while it should be, cancel sound
	if(pos_exists != (params.type != ServerSoundParams::SSP_LOCAL))
		return -1;

	// Filter destination clients
	std::vector<session_t> dst_clients;
	if(!params.to_player.empty()) {
		RemotePlayer *player = m_env->getPlayer(params.to_player.c_str());
		if(!player){
			infostream<<"Server::playSound: Player \""<<params.to_player
					<<"\" not found"<<std::endl;
			return -1;
		}
		if (player->getPeerId() == PEER_ID_INEXISTENT) {
			infostream<<"Server::playSound: Player \""<<params.to_player