index : minetest.git	gpcf lifo-fixes release
	modified minetest for gpcfs purposes	gpcf

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path: root/builtin

	Commit message (Collapse)	Author	Age
*	Document keymap_autorun in settingtypes.txt and minetest.conf.example (#4486)	Rui	2016-08-30
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*	Settingtypes.txt: Clarify comments, correct spelling	red-001	2016-08-29
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*	Builtin: Disallow registering users with the same name	SmallJoker	2016-08-29
| | | | |	Prevents duplicate names: 'NickName', 'nickname', 'NICKNAME'. Skips already registered users, so they can connect as usual.
*	Client: disable pre v25 init sending by default	est31	2016-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |	Disable the ability to connect to old servers by default to improve password security. If people still want to connect to old (0.4.12 and earlier) servers, they can flip the send_pre_v25_init setting. Add the ability to detect if we've tried to connect to a server which only supports the pre v25 init protocol, and show an apropriate error message. Most times the error will already be catched at the serverlist level, the detection mechanism only acts as last resort, because the "Connection timed out" error message that would be shown otherwise would be very confusing. Automatic "fixing" of this condition is not desired, as it would allow for downgrade attacks. As already 161 of the 167 servers on the serverlist support the new srp based auth protocol (> 96%), the breakage should be minimal. Follow up of commit af30183124d40a969040d7de4b3a487feec466e4 "Add option to not send pre v25 init packet" Also change the pessimistic assumption of masterlist server versions to optimistic, in order to avoid buggy behaviour (favourites not in the serverlist would be denied to connect to, etc).
*	Move on join and on leave messages to lua (#4460)	Xunto	2016-08-22
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*	Tidy up generate_from_settingtypes.lua a bit.	Tim	2016-08-20
| | | | | | | | |	* Multiline strings * Table-concat instead of String-concats * string.rep instead of loop-concat * string.format %q instead of manual quotation by gsub * Assert writeable files * Generate new settings_translation_file
*	Move generation from settingtypes out of dlg_settings_advanced	Tim	2016-08-20
| | | | | | | | | | |	Avoids unreachable code linter warning by moving generation code (of minetest.conf.example and settings_translation_file.cpp) out of dlg_settings_advanced. Due to passing the settings, also it avoids reading the settings file twice. Instead of activating the code by changing the active if-clauses, its activation is now done by uncommenting the loadfile() statement.
*	Zooming the camera requires the 'zoom' privilege	Ben Deutsch	2016-08-10
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*	Document zoom_fov in settingtypes.txt and minetest.conf.example	Ben Deutsch	2016-08-10
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*	Main menu, lua_api.txt: Fix mod/texture pack screenshot size issues	Wuzzy	2016-07-27
| | | | | |	Recommend mod screenshot size in lua_api.txt Adjust displayed screenshot size of texture packs Document texture pack files in lua_api.txt
*	Builtin: Add core.MAP_BLOCKSIZE constant	Tim	2016-07-26
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*	Builtin: Fix check for a player object in core.check_player_privs	Tim	2016-07-26
| | | | | | |	core.check_player_privs accepts as first argument a name or player object, but just tested for a string. This caused crashes inside builtin, when being passed any unexpected types. This provides a better (duck-typing like) test, better error reporting.
*	Builtin/profiler: Replace game profiler (#4245)	Tim	2016-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |	Use the setting "profiler.load" to enable profiling. Other settings can be found in settingtypes.txt. * /profiler print [filter] - report statistics to in-game console * /profiler dump [filter] - report statistics to STDOUT and debug.txt * /profiler save [format [filter]] - saves statistics to a file in your worldpath * txt (default) - same treetable format as used by the dump and print commands * csv - ready for spreadsheet import * json - useful for adhoc D3 visualizations * json_pretty - line wrapped and intended json for humans * lua - serialized lua table of the profile-data, for adhoc scripts * /profiler reset - reset all gathered profile data. This can be helpful to discard of any startup measurements that often spike during loading or to get more useful min-values. [filter] allows limiting the output of the data via substring/pattern matching against the modname. Note: Serialized data structures might be subject to change with changed or added measurements. csv might be the most stable, due to flat structure. Changes to the previous version include: * Updated and extended API monitoring * Correct calculation of average (mean) values (undistorted by idleness) * Reduce instrumentation overhead. * Fix crashes related to missing parameters for the future and occasional DIV/0's. * Prevent issues caused by timetravel (overflow, timejump, NTP corrections) * Prevent modname clashes with internal names. * Measure each instrumentation individually and label based on registration order. * Labeling of ABM's and LBM's for easier classification. Giving several ABM's or LBM's the same label will treat them as one. Missing labels will be autogenerated based on name or registration order. * Configurable instrumentation and reporting. Skip e.g. builtin if you don't need it. * Profile the profiler to measure instrumentation overhead.
*	Remove cinematic toggle on F8	rubenwardy	2016-07-05
| | | |	Also update cinematic mode's description to include mouse
*	Disable joysticks per default for now	est31	2016-07-04
| | | | | | | | | | |	It seems that various different devices register as Joysticks on linux, and their presence has caused lots of confusion amongst minetest users. Therefore, disable the joystick feature. Closes #4261 Closes #4221
*	Only allow strings to be passed to minetest.global_exists (#4253)	HybridDog	2016-06-28
| | | | |	Sometimes you accidentally forget the quotes when using global_exists, this makes minetest abort if you did so. M builtin/common/strict.lua
*	Mgflat/fractal/v7/valleys: Denser 3D noise tunnels	paramat	2016-06-24
| | | | | | |	Reduce spread from 96 to primes 61 and 67 (either side of 64) Prime spreads help to keep 3D noise periodic features unaligned 'cave width' 0.2 to preserve tunnel width Reduce octaves to 3 to improve network structure
*	Builtin/game/item: Add `place_param2` nodedef field	Auke Kok	2016-06-17
| | | | | | | | | | | | | | |	This allows a nodedef to specify a fixed value for param2 to be used for all normal placements. There are several uses for this: - nodes that require param2 to be set to a non-zero value for internal mod use. E.g. leafdecay could use this to detect that leaves are played by players. - force wallmounted or facedir value at placement at placement This overrides any player look direction or other on-the-fly param2 setting during placement.
*	Initial Gamepad support	est31	2016-06-03
| | | | | | |	Adds initial ingame gamepad support to minetest. Full Formspec support is not implemented yet and can be added by a later change.
*	Add colored text (not only colored chat).	Ekdohibs	2016-05-31
| | | | |	Add documentation, move files to a proper place and avoid memory leaks. Make it work with most kind of texts, and allow backgrounds too.
*	Colored chat working as expected for both freetype and non-freetype builds. ↵	TriBlade9	2016-05-31
| | | |	@nerzhul improvements * Add unit tests * Fix coding style * move guiChatConsole.hpp to client/
*	protection_bypass priv can now be revoked in singleplayer (#4169)	Sokomine	2016-05-30
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*	Item entities: Don't show description as infotext	paramat	2016-05-22
| | | | |	Partially reverts #3547 Infotext remains optional for objects, empty by default
*	Add on_punchnode callback	Wayward One	2016-05-17
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*	Documentation: Remove incorrect and excessive mapgen flags text	paramat	2016-05-16
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*	Android: Re-add button to remove singleplayer world	est31	2016-05-14
| | | |	Fixes #4120.
*	Mainmenu: don't show change keys dialog on android	est31	2016-05-13
| | | | | | | | | | | |	The change keys dialog can't be left. It doesn't make much sense to show it on Android in the first place, therefore disable it, just like commit aed70cb0b652d6cb2272e7b94cd56671b3df6239 'Disable sound and key binding settings in "pause" menu on android' has disabled it for the esc menu. Fixes #4115.
*	Fix #4111 ("Provided world path doesn't exist" if choosing singleplayer on ↵	Rui	2016-05-13
| | | | | |	first run") Bug and whitespace error fixed (Zeno)
*	Update credits tab	est31	2016-05-09
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*	Mainmenu: Remove space under mod list	Rui	2016-05-01
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*	Mapgen: Make 3D noise tunnels' width settable	paramat	2016-04-28
| | | | | |	Correct parameter names mg_valleys to mgvalleys Remove biome NoiseParams from MapgenValleysParams Improve format of parameter code
*	Avoid teleporting player if /teleport coords are out-of-range	tenplus1	2016-04-29
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*	Android menu: Unified serverlist	kilbith	2016-04-28
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*	Builtin: Add basic_privs setting	rubenwardy	2016-04-28
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*	Mainmenu: Standardize the menu button order and sizes	SmallJoker	2016-04-28
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*	Fix mainmenu code downloading the public serverlist twice.	Ekdohibs	2016-04-22
| | | | |	Also, fix a nil error that can happen sometimes in menu_handle_key_up_down
*	Textures: Replace menu background fallback dirt_bg.png with empty sky texture	paramat	2016-04-21
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*	Fix timer initialization.	Auke Kok	2016-04-21
| | | | | | |	This fixes the problem that the first timer tick is an overrun and causes all timers to expire immediately. replaces #4003
*	Mainmenu: Code cleaning	kilbith	2016-04-20
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*	Mainmenu: Unify favorite servers with main serverlist	kilbith	2016-04-20
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*	falling: walk 4 additional diagonally down directions.	Auke Kok	2016-04-20
| | | | | | |	This seems very little cost and matches the old behavior more closely. This will cause some more falling nodes to get added to falling clusters. With the efficiency of the algorithm, this really doesn't do much damage.
*	Mainmenu: Still support favorites if send_pre_v25_init is disabled	est31	2016-04-15
| | | | | | | | | | | | | | | | | | | | | | |	@SmallJoker has noted a bug that servers from the (local) main menu favorites list can't be opened. This commit fixes the bug by disabling any main menu based protocol checks for servers from the favorite list. Also, it fixes a second bug that happens when a server from the public serverlist doesn't send its supported protocol versions, most likely because its running a minetest older than commit [1]. Then we have shown an error msg that the server has enforced one specific protocol version. This was most likely not the case. Of course, we can't do anything better than do an assumption on the protocol versions if they are not known. That assumption should however be closest to the most often occuring case as possible. Also, some little cleanups. [1]: 5a0ed780f56a5225b3d7c5f64099586e390e5f39 "Server: announce MIN/MAX protocol version supported to serverlist. Client: check serverlist"
*	mainmenu: Tidy up logic in is_server_protocol_compat() (#3997)	SmallJoker	2016-04-15
| | |	Apply de morgan to simplify the logic.
*	Add option to disable entity selectionboxes. (#3992)	TriBlade9	2016-04-14
| | | |	Setting only loaded once, default value is to enable them.
*	Convert nodeupdate to non-recursive	Auke Kok	2016-04-11
| | | | | | | | | | | | | |	This took me a while to figure out. We no longer visit all 9 block around and with the touched node, but instead visit adjacent plus self. We then walk -non- recursively through all neigbors and if they cause a nodeupdate, we just keep walking until it ends. On the way back we prune the tail. I've tested this with 8000+ sand nodes. Video result is here: https://youtu.be/liKKgLefhFQ Took ~ 10 seconds to process and return to normal.
*	Mainmenu: Refactor tab UI code	Rui914	2016-04-08
| | | | | |	- Use local variables for tabs in place of globals - Merge together if statements where possible - Replace manual table searching code with indexof where possible
*	Mainmenu: Move description.txt textbox down	Rui914	2016-03-31
| | | |	Additionally, fix misc. code style issues
*	Mgv7: Decrease cliff steepness	paramat	2016-03-30
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*	stop falling.lua error	tenplus1	2016-03-29
| | | | | | |	2016-03-27 15:47:01: ERROR[Main]: ServerError: Lua: Runtime error from mod '*builtin*' in callback luaentity_Step(): Node name is not set or is not a string! 2016-03-27 15:47:01: ERROR[Main]: stack traceback: 2016-03-27 15:47:01: ERROR[Main]: [C]: in function 'add_node' 2016-03-27 15:47:01: ERROR[Main]: /usr/share/minetest/builtin/game/falling.lua:96: in function </usr/share/minetest/builtin/game/falling.lua:43>
*	Falling: Set acceleration on step again	Rui	2016-03-25
| | | | | | | | | | |	Commit 65c09a96f41705bb8e75fc5ff4276342be91ed11 "Set acceleration only once in falling node" has made the acceleration being set only once. But this has introduced a regression. Fix #3884.

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generated by cgit v1.2.3 (git 2.39.1) at 2025-01-25 17:40:28 +0000

/*
Minetest
Copyright (C) 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 <iostream>
#include <algorithm>
#include <sstream>
#include <IFileSystem.h>
#include "threading/mutex_auto_lock.h"
#include "util/auth.h"
#include "util/directiontables.h"
#include "util/pointedthing.h"
#include "util/serialize.h"
#include "util/string.h"
#include "util/srp.h"
#include "client.h"
#include "network/clientopcodes.h"
#include "filesys.h"
#include "porting.h"
#include "mapblock_mesh.h"
#include "mapblock.h"
#include "minimap.h"
#include "settings.h"
#include "profiler.h"
#include "gettext.h"
#include "log.h"
#include "nodemetadata.h"
#include "itemdef.h"
#include "shader.h"
#include "clientmap.h"
#include "clientmedia.h"
#include "sound.h"
#include "IMeshCache.h"
#include "config.h"
#include "version.h"
#include "drawscene.h"
#include "database-sqlite3.h"
#include "serialization.h"
#include "guiscalingfilter.h"

extern gui::IGUIEnvironment* guienv;

/*
	QueuedMeshUpdate
*/

QueuedMeshUpdate::QueuedMeshUpdate():
	p(-1337,-1337,-1337),
	data(NULL),
	ack_block_to_server(false)
{
}

QueuedMeshUpdate::~QueuedMeshUpdate()
{
	if(data)
		delete data;
}

/*
	MeshUpdateQueue
*/

MeshUpdateQueue::MeshUpdateQueue()
{
}

MeshUpdateQueue::~MeshUpdateQueue()
{
	MutexAutoLock lock(m_mutex);

	for(std::vector<QueuedMeshUpdate*>::iterator
			i = m_queue.begin();
			i != m_queue.end(); ++i)
	{
		QueuedMeshUpdate *q = *i;
		delete q;
	}
}

/*
	peer_id=0 adds with nobody to send to
*/
void MeshUpdateQueue::addBlock(v3s16 p, MeshMakeData *data, bool ack_block_to_server, bool urgent)
{
	DSTACK(FUNCTION_NAME);

	assert(data);	// pre-condition

	MutexAutoLock lock(m_mutex);

	if(urgent)
		m_urgents.insert(p);

	/*
		Find if block is already in queue.
		If it is, update the data and quit.
	*/
	for(std::vector<QueuedMeshUpdate*>::iterator
			i = m_queue.begin();
			i != m_queue.end(); ++i)
	{
		QueuedMeshUpdate *q = *i;
		if(q->p == p)
		{
			if(q->data)
				delete q->data;
			q->data = data;
			if(ack_block_to_server)
				q->ack_block_to_server = true;
			return;
		}
	}

	/*
		Add the block
	*/
	QueuedMeshUpdate *q = new QueuedMeshUpdate;
	q->p = p;
	q->data = data;
	q->ack_block_to_server = ack_block_to_server;
	m_queue.push_back(q);
}

// Returned pointer must be deleted
// Returns NULL if queue is empty
QueuedMeshUpdate *MeshUpdateQueue::pop()
{
	MutexAutoLock lock(m_mutex);

	bool must_be_urgent = !m_urgents.empty();
	for(std::vector<QueuedMeshUpdate*>::iterator
			i = m_queue.begin();
			i != m_queue.end(); ++i)
	{
		QueuedMeshUpdate *q = *i;
		if(must_be_urgent && m_urgents.count(q->p) == 0)
			continue;
		m_queue.erase(i);
		m_urgents.erase(q->p);
		return q;
	}
	return NULL;
}

/*
	MeshUpdateThread
*/

void MeshUpdateThread::enqueueUpdate(v3s16 p, MeshMakeData *data,
		bool ack_block_to_server, bool urgent)
{
	m_queue_in.addBlock(p, data, ack_block_to_server, urgent);
	deferUpdate();
}

void MeshUpdateThread::doUpdate()
{
	QueuedMeshUpdate *q;
	while ((q = m_queue_in.pop())) {

		ScopeProfiler sp(g_profiler, "Client: Mesh making");

		MapBlockMesh *mesh_new = new MapBlockMesh(q->data, m_camera_offset);

		MeshUpdateResult r;
		r.p = q->p;
		r.mesh = mesh_new;
		r.ack_block_to_server = q->ack_block_to_server;

		m_queue_out.push_back(r);

		delete q;
	}
}

/*
	Client
*/

Client::Client(
		IrrlichtDevice *device,
		const char *playername,
		std::string password,
		MapDrawControl &control,
		IWritableTextureSource *tsrc,
		IWritableShaderSource *shsrc,
		IWritableItemDefManager *itemdef,
		IWritableNodeDefManager *nodedef,
		ISoundManager *sound,
		MtEventManager *event,
		bool ipv6
):
	m_packetcounter_timer(0.0),
	m_connection_reinit_timer(0.1),
	m_avg_rtt_timer(0.0),
	m_playerpos_send_timer(0.0),
	m_ignore_damage_timer(0.0),
	m_tsrc(tsrc),
	m_shsrc(shsrc),
	m_itemdef(itemdef),
	m_nodedef(nodedef),
	m_sound(sound),
	m_event(event),
	m_mesh_update_thread(),
	m_env(
		new ClientMap(this, this, control,
			device->getSceneManager()->getRootSceneNode(),
			device->getSceneManager(), 666),
		device->getSceneManager(),
		tsrc, this, device
	),
	m_particle_manager(&m_env),
	m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, ipv6, this),
	m_device(device),
	m_minimap_disabled_by_server(false),
	m_server_ser_ver(SER_FMT_VER_INVALID),
	m_proto_ver(0),
	m_playeritem(0),
	m_inventory_updated(false),
	m_inventory_from_server(NULL),
	m_inventory_from_server_age(0.0),
	m_show_highlighted(false),
	m_animation_time(0),
	m_crack_level(-1),
	m_crack_pos(0,0,0),
	m_highlighted_pos(0,0,0),
	m_map_seed(0),
	m_password(password),
	m_chosen_auth_mech(AUTH_MECHANISM_NONE),
	m_auth_data(NULL),
	m_access_denied(false),
	m_access_denied_reconnect(false),
	m_itemdef_received(false),
	m_nodedef_received(false),
	m_media_downloader(new ClientMediaDownloader()),
	m_time_of_day_set(false),
	m_last_time_of_day_f(-1),
	m_time_of_day_update_timer(0),
	m_recommended_send_interval(0.1),
	m_removed_sounds_check_timer(0),
	m_state(LC_Created),
	m_localdb(NULL)
{
	// Add local player
	m_env.addPlayer(new LocalPlayer(this, playername));

	m_mapper = new Mapper(device, this);
	m_cache_save_interval = g_settings->getU16("server_map_save_interval");

	m_cache_smooth_lighting = g_settings->getBool("smooth_lighting");
	m_cache_enable_shaders  = g_settings->getBool("enable_shaders");
}

void Client::Stop()
{
	//request all client managed threads to stop
	m_mesh_update_thread.stop();
	// Save local server map
	if (m_localdb) {
		infostream << "Local map saving ended." << std::endl;
		m_localdb->endSave();
	}
}

bool Client::isShutdown()
{

	if (!m_mesh_update_thread.isRunning()) return true;

	return false;
}

Client::~Client()
{
	m_con.Disconnect();

	m_mesh_update_thread.stop();
	m_mesh_update_thread.wait();
	while (!m_mesh_update_thread.m_queue_out.empty()) {
		MeshUpdateResult r = m_mesh_update_thread.m_queue_out.pop_frontNoEx();
		delete r.mesh;
	}


	delete m_inventory_from_server;

	// Delete detached inventories
	for (std::map<std::string, Inventory*>::iterator
			i = m_detached_inventories.begin();
			i != m_detached_inventories.end(); ++i) {
		delete i->second;
	}

	// cleanup 3d model meshes on client shutdown
	while (m_device->getSceneManager()->getMeshCache()->getMeshCount() != 0) {
		scene::IAnimatedMesh *mesh =
			m_device->getSceneManager()->getMeshCache()->getMeshByIndex(0);

		if (mesh != NULL)
			m_device->getSceneManager()->getMeshCache()->removeMesh(mesh);
	}

	delete m_mapper;
}

void Client::connect(Address address,
		const std::string &address_name,
		bool is_local_server)
{
	DSTACK(FUNCTION_NAME);

	initLocalMapSaving(address, address_name, is_local_server);

	m_con.SetTimeoutMs(0);
	m_con.Connect(address);
}

void Client::step(float dtime)
{
	DSTACK(FUNCTION_NAME);

	// Limit a bit
	if(dtime > 2.0)
		dtime = 2.0;

	if(m_ignore_damage_timer > dtime)
		m_ignore_damage_timer -= dtime;
	else
		m_ignore_damage_timer = 0.0;

	m_animation_time += dtime;
	if(m_animation_time > 60.0)
		m_animation_time -= 60.0;

	m_time_of_day_update_timer += dtime;

	ReceiveAll();

	/*
		Packet counter
	*/
	{
		float &counter = m_packetcounter_timer;
		counter -= dtime;
		if(counter <= 0.0)
		{
			counter = 20.0;

			infostream << "Client packetcounter (" << m_packetcounter_timer
					<< "):"<<std::endl;
			m_packetcounter.print(infostream);
			m_packetcounter.clear();
		}
	}

	// UGLY hack to fix 2 second startup delay caused by non existent
	// server client startup synchronization in local server or singleplayer mode
	static bool initial_step = true;
	if (initial_step) {
		initial_step = false;
	}
	else if(m_state == LC_Created) {
		float &counter = m_connection_reinit_timer;
		counter -= dtime;
		if(counter <= 0.0) {
			counter = 2.0;

			Player *myplayer = m_env.getLocalPlayer();
			FATAL_ERROR_IF(myplayer == NULL, "Local player not found in environment.");

			// Send TOSERVER_INIT_LEGACY
			// [0] u16 TOSERVER_INIT_LEGACY
			// [2] u8 SER_FMT_VER_HIGHEST_READ
			// [3] u8[20] player_name
			// [23] u8[28] password (new in some version)
			// [51] u16 minimum supported network protocol version (added sometime)
			// [53] u16 maximum supported network protocol version (added later than the previous one)

			char pName[PLAYERNAME_SIZE];
			char pPassword[PASSWORD_SIZE];
			memset(pName, 0, PLAYERNAME_SIZE * sizeof(char));
			memset(pPassword, 0, PASSWORD_SIZE * sizeof(char));

			std::string hashed_password = translatePassword(myplayer->getName(), m_password);
			snprintf(pName, PLAYERNAME_SIZE, "%s", myplayer->getName());
			snprintf(pPassword, PASSWORD_SIZE, "%s", hashed_password.c_str());

			sendLegacyInit(pName, pPassword);
			if (LATEST_PROTOCOL_VERSION >= 25)
				sendInit(myplayer->getName());
		}

		// Not connected, return
		return;
	}

	/*
		Do stuff if connected
	*/

	/*
		Run Map's timers and unload unused data
	*/
	const float map_timer_and_unload_dtime = 5.25;
	if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime)) {
		ScopeProfiler sp(g_profiler, "Client: map timer and unload");
		std::vector<v3s16> deleted_blocks;
		m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
			g_settings->getFloat("client_unload_unused_data_timeout"),
			g_settings->getS32("client_mapblock_limit"),
			&deleted_blocks);

		/*
			Send info to server
			NOTE: This loop is intentionally iterated the way it is.
		*/

		std::vector<v3s16>::iterator i = deleted_blocks.begin();
		std::vector<v3s16> sendlist;
		for(;;) {
			if(sendlist.size() == 255 || i == deleted_blocks.end()) {
				if(sendlist.empty())
					break;
				/*
					[0] u16 command
					[2] u8 count
					[3] v3s16 pos_0
					[3+6] v3s16 pos_1
					...
				*/

				sendDeletedBlocks(sendlist);

				if(i == deleted_blocks.end())
					break;

				sendlist.clear();
			}

			sendlist.push_back(*i);
			++i;
		}
	}

	/*
		Handle environment
	*/
	// Control local player (0ms)
	LocalPlayer *player = m_env.getLocalPlayer();
	assert(player != NULL);
	player->applyControl(dtime);

	// Step environment
	m_env.step(dtime);

	/*
		Get events
	*/
	for(;;) {
		ClientEnvEvent event = m_env.getClientEvent();
		if(event.type == CEE_NONE) {
			break;
		}
		else if(event.type == CEE_PLAYER_DAMAGE) {
			if(m_ignore_damage_timer <= 0) {
				u8 damage = event.player_damage.amount;

				if(event.player_damage.send_to_server)
					sendDamage(damage);

				// Add to ClientEvent queue
				ClientEvent event;
				event.type = CE_PLAYER_DAMAGE;
				event.player_damage.amount = damage;
				m_client_event_queue.push(event);
			}
		}
		else if(event.type == CEE_PLAYER_BREATH) {
				u16 breath = event.player_breath.amount;
				sendBreath(breath);
		}
	}

	/*
		Print some info
	*/
	float &counter = m_avg_rtt_timer;
	counter += dtime;
	if(counter >= 10) {
		counter = 0.0;
		// connectedAndInitialized() is true, peer exists.
		float avg_rtt = getRTT();
		infostream << "Client: avg_rtt=" << avg_rtt << std::endl;
	}

	/*
		Send player position to server
	*/
	{
		float &counter = m_playerpos_send_timer;
		counter += dtime;
		if((m_state == LC_Ready) && (counter >= m_recommended_send_interval))
		{
			counter = 0.0;
			sendPlayerPos();
		}
	}

	/*
		Replace updated meshes
	*/
	{
		int num_processed_meshes = 0;
		while (!m_mesh_update_thread.m_queue_out.empty())
		{
			num_processed_meshes++;

			MinimapMapblock *minimap_mapblock = NULL;
			bool do_mapper_update = true;

			MeshUpdateResult r = m_mesh_update_thread.m_queue_out.pop_frontNoEx();
			MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(r.p);
			if (block) {
				// Delete the old mesh
				if (block->mesh != NULL) {
					delete block->mesh;
					block->mesh = NULL;
				}

				if (r.mesh) {
					minimap_mapblock = r.mesh->moveMinimapMapblock();
					if (minimap_mapblock == NULL)
						do_mapper_update = false;
				}

				if (r.mesh && r.mesh->getMesh()->getMeshBufferCount() == 0) {
					delete r.mesh;
				} else {
					// Replace with the new mesh
					block->mesh = r.mesh;
				}
			} else {
				delete r.mesh;
			}

			if (do_mapper_update)
				m_mapper->addBlock(r.p, minimap_mapblock);

			if (r.ack_block_to_server) {
				/*
					Acknowledge block
					[0] u8 count
					[1] v3s16 pos_0
				*/
				sendGotBlocks(r.p);
			}
		}

		if (num_processed_meshes > 0)
			g_profiler->graphAdd("num_processed_meshes", num_processed_meshes);
	}

	/*
		Load fetched media
	*/
	if (m_media_downloader && m_media_downloader->isStarted()) {
		m_media_downloader->step(this);
		if (m_media_downloader->isDone()) {
			received_media();
			delete m_media_downloader;
			m_media_downloader = NULL;
		}
	}

	/*
		If the server didn't update the inventory in a while, revert
		the local inventory (so the player notices the lag problem
		and knows something is wrong).
	*/
	if(m_inventory_from_server)
	{
		float interval = 10.0;
		float count_before = floor(m_inventory_from_server_age / interval);

		m_inventory_from_server_age += dtime;

		float count_after = floor(m_inventory_from_server_age / interval);

		if(count_after != count_before)
		{
			// Do this every <interval> seconds after TOCLIENT_INVENTORY
			// Reset the locally changed inventory to the authoritative inventory
			Player *player = m_env.getLocalPlayer();
			player->inventory = *m_inventory_from_server;
			m_inventory_updated = true;
		}
	}

	/*
		Update positions of sounds attached to objects
	*/
	{
		for(std::map<int, u16>::iterator
				i = m_sounds_to_objects.begin();
				i != m_sounds_to_objects.end(); ++i)
		{
			int client_id = i->first;
			u16 object_id = i->second;
			ClientActiveObject *cao = m_env.getActiveObject(object_id);
			if(!cao)
				continue;
			v3f pos = cao->getPosition();
			m_sound->updateSoundPosition(client_id, pos);
		}
	}

	/*
		Handle removed remotely initiated sounds
	*/
	m_removed_sounds_check_timer += dtime;
	if(m_removed_sounds_check_timer >= 2.32) {
		m_removed_sounds_check_timer = 0;
		// Find removed sounds and clear references to them
		std::vector<s32> removed_server_ids;
		for(std::map<s32, int>::iterator
				i = m_sounds_server_to_client.begin();
				i != m_sounds_server_to_client.end();) {
			s32 server_id = i->first;
			int client_id = i->second;
			++i;
			if(!m_sound->soundExists(client_id)) {
				m_sounds_server_to_client.erase(server_id);
				m_sounds_client_to_server.erase(client_id);
				m_sounds_to_objects.erase(client_id);
				removed_server_ids.push_back(server_id);
			}
		}

		// Sync to server
		if(!removed_server_ids.empty()) {
			sendRemovedSounds(removed_server_ids);
		}
	}

	// Write server map
	if (m_localdb && m_localdb_save_interval.step(dtime,
			m_cache_save_interval)) {
		m_localdb->endSave();
		m_localdb->beginSave();
	}
}

bool Client::loadMedia(const std::string &data, const std::string &filename)
{
	// Silly irrlicht's const-incorrectness
	Buffer<char> data_rw(data.c_str(), data.size());

	std::string name;

	const char *image_ext[] = {
		".png", ".jpg", ".bmp", ".tga",
		".pcx", ".ppm", ".psd", ".wal", ".rgb",
		NULL
	};
	name = removeStringEnd(filename, image_ext);
	if(name != "")
	{
		verbosestream<<"Client: Attempting to load image "
		<<"file \""<<filename<<"\""<<std::endl;

		io::IFileSystem *irrfs = m_device->getFileSystem();
		video::IVideoDriver *vdrv = m_device->getVideoDriver();

		// Create an irrlicht memory file
		io::IReadFile *rfile = irrfs->createMemoryReadFile(
				*data_rw, data_rw.getSize(), "_tempreadfile");

		FATAL_ERROR_IF(!rfile, "Could not create irrlicht memory file.");

		// Read image
		video::IImage *img = vdrv->createImageFromFile(rfile);
		if(!img){
			errorstream<<"Client: Cannot create image from data of "
					<<"file \""<<filename<<"\""<<std::endl;
			rfile->drop();
			return false;
		}
		else {
			m_tsrc->insertSourceImage(filename, img);
			img->drop();
			rfile->drop();
			return true;
		}
	}

	const char *sound_ext[] = {
		".0.ogg", ".1.ogg", ".2.ogg", ".3.ogg", ".4.ogg",
		".5.ogg", ".6.ogg", ".7.ogg", ".8.ogg", ".9.ogg",
		".ogg", NULL
	};
	name = removeStringEnd(filename, sound_ext);
	if(name != "")
	{
		verbosestream<<"Client: Attempting to load sound "
		<<"file \""<<filename<<"\""<<std::endl;
		m_sound->loadSoundData(name, data);
		return true;
	}

	const char *model_ext[] = {
		".x", ".b3d", ".md2", ".obj",
		NULL
	};
	name = removeStringEnd(filename, model_ext);
	if(name != "")
	{
		verbosestream<<"Client: Storing model into memory: "
				<<"\""<<filename<<"\""<<std::endl;
		if(m_mesh_data.count(filename))
			errorstream<<"Multiple models with name \""<<filename.c_str()
					<<"\" found; replacing previous model"<<std::endl;
		m_mesh_data[filename] = data;
		return true;
	}

	errorstream<<"Client: Don't know how to load file \""
			<<filename<<"\""<<std::endl;
	return false;
}

// Virtual methods from con::PeerHandler
void Client::peerAdded(con::Peer *peer)
{
	infostream << "Client::peerAdded(): peer->id="
			<< peer->id << std::endl;
}
void Client::deletingPeer(con::Peer *peer, bool timeout)
{
	infostream << "Client::deletingPeer(): "
			"Server Peer is getting deleted "
			<< "(timeout=" << timeout << ")" << std::endl;

	if (timeout) {
		m_access_denied = true;
		m_access_denied_reason = gettext("Connection timed out.");
	}
}

/*
	u16 command
	u16 number of files requested
	for each file {
		u16 length of name
		string name
	}
*/
void Client::request_media(const std::vector<std::string> &file_requests)
{
	std::ostringstream os(std::ios_base::binary);
	writeU16(os, TOSERVER_REQUEST_MEDIA);
	size_t file_requests_size = file_requests.size();

	FATAL_ERROR_IF(file_requests_size > 0xFFFF, "Unsupported number of file requests");

	// Packet dynamicly resized
	NetworkPacket pkt(TOSERVER_REQUEST_MEDIA, 2 + 0);

	pkt << (u16) (file_requests_size & 0xFFFF);

	for(std::vector<std::string>::const_iterator i = file_requests.begin();
			i != file_requests.end(); ++i) {
		pkt << (*i);
	}

	Send(&pkt);

	infostream << "Client: Sending media request list to server ("
			<< file_requests.size() << " files. packet size)" << std::endl;
}

void Client::received_media()
{
	NetworkPacket pkt(TOSERVER_RECEIVED_MEDIA, 0);
	Send(&pkt);
	infostream << "Client: Notifying server that we received all media"
			<< std::endl;
}

void Client::initLocalMapSaving(const Address &address,
		const std::string &hostname,
		bool is_local_server)
{
	if (!g_settings->getBool("enable_local_map_saving") || is_local_server) {
		return;
	}

	const std::string world_path = porting::path_user
		+ DIR_DELIM + "worlds"
		+ DIR_DELIM + "server_"
		+ hostname + "_" + to_string(address.getPort());

	fs::CreateAllDirs(world_path);

	m_localdb = new Database_SQLite3(world_path);
	m_localdb->beginSave();
	actionstream << "Local map saving started, map will be saved at '" << world_path << "'" << std::endl;
}

void Client::ReceiveAll()
{
	DSTACK(FUNCTION_NAME);
	u32 start_ms = porting::getTimeMs();
	for(;;)
	{
		// Limit time even if there would be huge amounts of data to
		// process
		if(porting::getTimeMs() > start_ms + 100)
			break;

		try {
			Receive();
			g_profiler->graphAdd("client_received_packets", 1);
		}
		catch(con::NoIncomingDataException &e) {
			break;
		}
		catch(con::InvalidIncomingDataException &e) {
			infostream<<"Client::ReceiveAll(): "
					"InvalidIncomingDataException: what()="
					<<e.what()<<std::endl;
		}
	}
}

void Client::Receive()
{
	DSTACK(FUNCTION_NAME);
	NetworkPacket pkt;
	m_con.Receive(&pkt);
	ProcessData(&pkt);
}

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

/*
	sender_peer_id given to this shall be quaranteed to be a valid peer
*/
void Client::ProcessData(NetworkPacket *pkt)
{
	DSTACK(FUNCTION_NAME);

	ToClientCommand command = (ToClientCommand) pkt->getCommand();
	u32 sender_peer_id = pkt->getPeerId();

	//infostream<<"Client: received command="<<command<<std::endl;
	m_packetcounter.add((u16)command);

	/*
		If this check is removed, be sure to change the queue
		system to know the ids
	*/
	if(sender_peer_id != PEER_ID_SERVER) {
		infostream << "Client::ProcessData(): Discarding data not "
			"coming from server: peer_id=" << sender_peer_id
			<< std::endl;
		return;
	}

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

	/*
	 * Those packets are handled before m_server_ser_ver is set, it's normal
	 * But we must use the new ToClientConnectionState in the future,
	 * as a byte mask
	 */
	if(toClientCommandTable[command].state == TOCLIENT_STATE_NOT_CONNECTED) {
		handleCommand(pkt);
		return;
	}

	if(m_server_ser_ver == SER_FMT_VER_INVALID) {
		infostream << "Client: Server serialization"
				" format invalid or not initialized."
				" Skipping incoming command=" << command << std::endl;
		return;
	}

	/*
	  Handle runtime commands
	*/

	handleCommand(pkt);
}

void Client::Send(NetworkPacket* pkt)
{
	m_con.Send(PEER_ID_SERVER,
		serverCommandFactoryTable[pkt->getCommand()].channel,
		pkt,
		serverCommandFactoryTable[pkt->getCommand()].reliable);
}

void Client::interact(u8 action, const PointedThing& pointed)
{
	if(m_state != LC_Ready) {
		errorstream << "Client::interact() "
				"Canceled (not connected)"
				<< std::endl;
		return;
	}

	/*
		[0] u16 command
		[2] u8 action
		[3] u16 item
		[5] u32 length of the next item
		[9] serialized PointedThing
		actions:
		0: start digging (from undersurface) or use
		1: stop digging (all parameters ignored)
		2: digging completed
		3: place block or item (to abovesurface)
		4: use item
	*/

	NetworkPacket pkt(TOSERVER_INTERACT, 1 + 2 + 0);

	pkt << action;
	pkt << (u16)getPlayerItem();

	std::ostringstream tmp_os(std::ios::binary);
	pointed.serialize(tmp_os);

	pkt.putLongString(tmp_os.str());

	Send(&pkt);
}

void Client::deleteAuthData()
{
	if (!m_auth_data)
		return;

	switch (m_chosen_auth_mech) {
		case AUTH_MECHANISM_FIRST_SRP:
			break;
		case AUTH_MECHANISM_SRP:
		case AUTH_MECHANISM_LEGACY_PASSWORD:
			srp_user_delete((SRPUser *) m_auth_data);
			m_auth_data = NULL;
			break;
		case AUTH_MECHANISM_NONE:
			break;
	}
	m_chosen_auth_mech = AUTH_MECHANISM_NONE;
}


AuthMechanism Client::choseAuthMech(const u32 mechs)
{
	if (mechs & AUTH_MECHANISM_SRP)
		return AUTH_MECHANISM_SRP;

	if (mechs & AUTH_MECHANISM_FIRST_SRP)
		return AUTH_MECHANISM_FIRST_SRP;

	if (mechs & AUTH_MECHANISM_LEGACY_PASSWORD)
		return AUTH_MECHANISM_LEGACY_PASSWORD;

	return AUTH_MECHANISM_NONE;
}

void Client::sendLegacyInit(const char* playerName, const char* playerPassword)
{
	NetworkPacket pkt(TOSERVER_INIT_LEGACY,
			1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2 + 2);

	pkt << (u8) SER_FMT_VER_HIGHEST_READ;
	pkt.putRawString(playerName,PLAYERNAME_SIZE);
	pkt.putRawString(playerPassword, PASSWORD_SIZE);
	pkt << (u16) CLIENT_PROTOCOL_VERSION_MIN << (u16) CLIENT_PROTOCOL_VERSION_MAX;

	Send(&pkt);
}

void Client::sendInit(const std::string &playerName)
{
	NetworkPacket pkt(TOSERVER_INIT, 1 + 2 + 2 + (1 + playerName.size()));

	// we don't support network compression yet
	u16 supp_comp_modes = NETPROTO_COMPRESSION_NONE;
	pkt << (u8) SER_FMT_VER_HIGHEST_READ << (u16) supp_comp_modes;
	pkt << (u16) CLIENT_PROTOCOL_VERSION_MIN << (u16) CLIENT_PROTOCOL_VERSION_MAX;
	pkt << playerName;

	Send(&pkt);
}

void Client::startAuth(AuthMechanism chosen_auth_mechanism)
{
	m_chosen_auth_mech = chosen_auth_mechanism;

	switch (chosen_auth_mechanism) {
		case AUTH_MECHANISM_FIRST_SRP: {
			// send srp verifier to server
			NetworkPacket resp_pkt(TOSERVER_FIRST_SRP, 0);
			char *salt, *bytes_v;
			std::size_t len_salt, len_v;
			salt = NULL;
			getSRPVerifier(getPlayerName(), m_password,
				&salt, &len_salt, &bytes_v, &len_v);
			resp_pkt
				<< std::string((char*)salt, len_salt)
				<< std::string((char*)bytes_v, len_v)
				<< (u8)((m_password == "") ? 1 : 0);
			free(salt);
			free(bytes_v);
			Send(&resp_pkt);
			break;
		}
		case AUTH_MECHANISM_SRP:
		case AUTH_MECHANISM_LEGACY_PASSWORD: {
			u8 based_on = 1;

			if (chosen_auth_mechanism == AUTH_MECHANISM_LEGACY_PASSWORD) {
				m_password = translatePassword(getPlayerName(), m_password);
				based_on = 0;
			}

			std::string playername_u = lowercase(getPlayerName());
			m_auth_data = srp_user_new(SRP_SHA256, SRP_NG_2048,
				getPlayerName().c_str(), playername_u.c_str(),
				(const unsigned char *) m_password.c_str(),
				m_password.length(), NULL, NULL);
			char *bytes_A = 0;
			size_t len_A = 0;
			SRP_Result res = srp_user_start_authentication(
				(struct SRPUser *) m_auth_data, NULL, NULL, 0,
				(unsigned char **) &bytes_A, &len_A);
			FATAL_ERROR_IF(res != SRP_OK, "Creating local SRP user failed.");

			NetworkPacket resp_pkt(TOSERVER_SRP_BYTES_A, 0);
			resp_pkt << std::string(bytes_A, len_A) << based_on;
			Send(&resp_pkt);
			break;
		}
		case AUTH_MECHANISM_NONE:
			break; // not handled in this method
	}
}

void Client::sendDeletedBlocks(std::vector<v3s16> &blocks)
{
	NetworkPacket pkt(TOSERVER_DELETEDBLOCKS, 1 + sizeof(v3s16) * blocks.size());

	pkt << (u8) blocks.size();

	u32 k = 0;
	for(std::vector<v3s16>::iterator
			j = blocks.begin();
			j != blocks.end(); ++j) {
		pkt << *j;
		k++;
	}

	Send(&pkt);
}

void Client::sendGotBlocks(v3s16 block)
{
	NetworkPacket pkt(TOSERVER_GOTBLOCKS, 1 + 6);
	pkt << (u8) 1 << block;
	Send(&pkt);
}

void Client::sendRemovedSounds(std::vector<s32> &soundList)
{
	size_t server_ids = soundList.size();
	assert(server_ids <= 0xFFFF);

	NetworkPacket pkt(TOSERVER_REMOVED_SOUNDS, 2 + server_ids * 4);

	pkt << (u16) (server_ids & 0xFFFF);

	for(std::vector<s32>::iterator i = soundList.begin();
			i != soundList.end(); ++i)
		pkt << *i;

	Send(&pkt);
}

void Client::sendNodemetaFields(v3s16 p, const std::string &formname,
		const StringMap &fields)
{
	size_t fields_size = fields.size();

	FATAL_ERROR_IF(fields_size > 0xFFFF, "Unsupported number of nodemeta fields");

	NetworkPacket pkt(TOSERVER_NODEMETA_FIELDS, 0);

	pkt << p << formname << (u16) (fields_size & 0xFFFF);

	StringMap::const_iterator it;
	for (it = fields.begin(); it != fields.end(); ++it) {
		const std::string &name = it->first;
		const std::string &value = it->second;
		pkt << name;
		pkt.putLongString(value);
	}

	Send(&pkt);
}

void Client::sendInventoryFields(const std::string &formname,
		const StringMap &fields)
{
	size_t fields_size = fields.size();
	FATAL_ERROR_IF(fields_size > 0xFFFF, "Unsupported number of inventory fields");

	NetworkPacket pkt(TOSERVER_INVENTORY_FIELDS, 0);
	pkt << formname << (u16) (fields_size & 0xFFFF);

	StringMap::const_iterator it;
	for (it = fields.begin(); it != fields.end(); ++it) {
		const std::string &name  = it->first;
		const std::string &value = it->second;
		pkt << name;
		pkt.putLongString(value);
	}

	Send(&pkt);
}

void Client::sendInventoryAction(InventoryAction *a)
{
	std::ostringstream os(std::ios_base::binary);

	a->serialize(os);

	// Make data buffer
	std::string s = os.str();

	NetworkPacket pkt(TOSERVER_INVENTORY_ACTION, s.size());
	pkt.putRawString(s.c_str(),s.size());

	Send(&pkt);
}

void Client::sendChatMessage(const std::wstring &message)
{
	NetworkPacket pkt(TOSERVER_CHAT_MESSAGE, 2 + message.size() * sizeof(u16));

	pkt << message;

	Send(&pkt);
}

void Client::sendChangePassword(const std::string &oldpassword,
        const std::string &newpassword)
{
	Player *player = m_env.getLocalPlayer();
	if (player == NULL)
		return;

	std::string playername = player->getName();
	if (m_proto_ver >= 25) {
		// get into sudo mode and then send new password to server
		m_password = oldpassword;
		m_new_password = newpassword;
		startAuth(choseAuthMech(m_sudo_auth_methods));
	} else {
		std::string oldpwd = translatePassword(playername, oldpassword);
		std::string newpwd = translatePassword(playername, newpassword);

		NetworkPacket pkt(TOSERVER_PASSWORD_LEGACY, 2 * PASSWORD_SIZE);

		for (u8 i = 0; i < PASSWORD_SIZE; i++) {
			pkt << (u8) (i < oldpwd.length() ? oldpwd[i] : 0);
		}

		for (u8 i = 0; i < PASSWORD_SIZE; i++) {
			pkt << (u8) (i < newpwd.length() ? newpwd[i] : 0);
		}
		Send(&pkt);
	}
}


void Client::sendDamage(u8 damage)
{
	DSTACK(FUNCTION_NAME);

	NetworkPacket pkt(TOSERVER_DAMAGE, sizeof(u8));
	pkt << damage;
	Send(&pkt);
}

void Client::sendBreath(u16 breath)
{
	DSTACK(FUNCTION_NAME);

	NetworkPacket pkt(TOSERVER_BREATH, sizeof(u16));
	pkt << breath;
	Send(&pkt);
}

void Client::sendRespawn()
{
	DSTACK(FUNCTION_NAME);

	NetworkPacket pkt(TOSERVER_RESPAWN, 0);
	Send(&pkt);
}

void Client::sendReady()
{
	DSTACK(FUNCTION_NAME);

	NetworkPacket pkt(TOSERVER_CLIENT_READY,
			1 + 1 + 1 + 1 + 2 + sizeof(char) * strlen(g_version_hash));

	pkt << (u8) VERSION_MAJOR << (u8) VERSION_MINOR << (u8) VERSION_PATCH
		<< (u8) 0 << (u16) strlen(g_version_hash);

	pkt.putRawString(g_version_hash, (u16) strlen(g_version_hash));
	Send(&pkt);
}

void Client::sendPlayerPos()
{
	LocalPlayer *myplayer = m_env.getLocalPlayer();
	if(myplayer == NULL)
		return;

	// Save bandwidth by only updating position when something changed
	if(myplayer->last_position        == myplayer->getPosition() &&
			myplayer->last_speed      == myplayer->getSpeed()    &&
			myplayer->last_pitch      == myplayer->getPitch()    &&
			myplayer->last_yaw        == myplayer->getYaw()      &&
			myplayer->last_keyPressed == myplayer->keyPressed)
		return;

	myplayer->last_position   = myplayer->getPosition();
	myplayer->last_speed      = myplayer->getSpeed();
	myplayer->last_pitch      = myplayer->getPitch();
	myplayer->last_yaw        = myplayer->getYaw();
	myplayer->last_keyPressed = myplayer->keyPressed;

	u16 our_peer_id;
	{
		//MutexAutoLock lock(m_con_mutex); //bulk comment-out
		our_peer_id = m_con.GetPeerID();
	}

	// Set peer id if not set already
	if(myplayer->peer_id == PEER_ID_INEXISTENT)
		myplayer->peer_id = our_peer_id;

	assert(myplayer->peer_id == our_peer_id);

	v3f pf         = myplayer->getPosition();
	v3f sf         = myplayer->getSpeed();
	s32 pitch      = myplayer->getPitch() * 100;
	s32 yaw        = myplayer->getYaw() * 100;
	u32 keyPressed = myplayer->keyPressed;

	v3s32 position(pf.X*100, pf.Y*100, pf.Z*100);
	v3s32 speed(sf.X*100, sf.Y*100, sf.Z*100);
	/*
		Format:
		[0] v3s32 position*100
		[12] v3s32 speed*100
		[12+12] s32 pitch*100
		[12+12+4] s32 yaw*100
		[12+12+4+4] u32 keyPressed
	*/

	NetworkPacket pkt(TOSERVER_PLAYERPOS, 12 + 12 + 4 + 4 + 4);

	pkt << position << speed << pitch << yaw << keyPressed;

	Send(&pkt);
}

void Client::sendPlayerItem(u16 item)
{
	Player *myplayer = m_env.getLocalPlayer();
	if(myplayer == NULL)
		return;

	u16 our_peer_id = m_con.GetPeerID();

	// Set peer id if not set already
	if(myplayer->peer_id == PEER_ID_INEXISTENT)
		myplayer->peer_id = our_peer_id;
	assert(myplayer->peer_id == our_peer_id);

	NetworkPacket pkt(TOSERVER_PLAYERITEM, 2);

	pkt << item;

	Send(&pkt);
}

void Client::removeNode(v3s16 p)
{
	std::map<v3s16, MapBlock*> modified_blocks;

	try {
		m_env.getMap().removeNodeAndUpdate(p, modified_blocks);
	}
	catch(InvalidPositionException &e) {
	}

	for(std::map<v3s16, MapBlock *>::iterator
			i = modified_blocks.begin();
			i != modified_blocks.end(); ++i) {
		addUpdateMeshTaskWithEdge(i->first, false, true);
	}
}

void Client::addNode(v3s16 p, MapNode n, bool remove_metadata)
{
	//TimeTaker timer1("Client::addNode()");

	std::map<v3s16, MapBlock*> modified_blocks;

	try {
		//TimeTaker timer3("Client::addNode(): addNodeAndUpdate");
		m_env.getMap().addNodeAndUpdate(p, n, modified_blocks, remove_metadata);
	}
	catch(InvalidPositionException &e) {
	}

	for(std::map<v3s16, MapBlock *>::iterator
			i = modified_blocks.begin();
			i != modified_blocks.end(); ++i) {
		addUpdateMeshTaskWithEdge(i->first, false, true);
	}
}

void Client::setPlayerControl(PlayerControl &control)
{
	LocalPlayer *player = m_env.getLocalPlayer();
	assert(player != NULL);
	player->control = control;
}

void Client::selectPlayerItem(u16 item)
{
	m_playeritem = item;
	m_inventory_updated = true;
	sendPlayerItem(item);
}

// Returns true if the inventory of the local player has been
// updated from the server. If it is true, it is set to false.
bool Client::getLocalInventoryUpdated()
{
	bool updated = m_inventory_updated;
	m_inventory_updated = false;
	return updated;
}

// Copies the inventory of the local player to parameter
void Client::getLocalInventory(Inventory &dst)
{
	Player *player = m_env.getLocalPlayer();
	assert(player != NULL);
	dst = player->inventory;
}

Inventory* Client::getInventory(const InventoryLocation &loc)
{
	switch(loc.type){
	case InventoryLocation::UNDEFINED:
	{}
	break;
	case InventoryLocation::CURRENT_PLAYER:
	{
		Player *player = m_env.getLocalPlayer();
		assert(player != NULL);
		return &player->inventory;
	}
	break;
	case InventoryLocation::PLAYER:
	{
		Player *player = m_env.getPlayer(loc.name.c_str());
		if(!player)
			return NULL;
		return &player->inventory;
	}
	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:
		FATAL_ERROR("Invalid inventory location type.");
		break;
	}
	return NULL;
}

void Client::inventoryAction(InventoryAction *a)
{
	/*
		Send it to the server
	*/
	sendInventoryAction(a);

	/*
		Predict some local inventory changes
	*/
	a->clientApply(this, this);

	// Remove it
	delete a;
}

ClientActiveObject * Client::getSelectedActiveObject(
		f32 max_d,
		v3f from_pos_f_on_map,
		core::line3d<f32> shootline_on_map
	)
{
	std::vector<DistanceSortedActiveObject> objects;

	m_env.getActiveObjects(from_pos_f_on_map, max_d, objects);

	// Sort them.
	// After this, the closest object is the first in the array.
	std::sort(objects.begin(), objects.end());

	for(unsigned int i=0; i<objects.size(); i++)
	{
		ClientActiveObject *obj = objects[i].obj;

		core::aabbox3d<f32> *selection_box = obj->getSelectionBox();
		if(selection_box == NULL)
			continue;

		v3f pos = obj->getPosition();

		core::aabbox3d<f32> offsetted_box(
				selection_box->MinEdge + pos,
				selection_box->MaxEdge + pos
		);

		if(offsetted_box.intersectsWithLine(shootline_on_map))
		{
			return obj;
		}
	}

	return NULL;
}

std::list<std::string> Client::getConnectedPlayerNames()
{
	return m_env.getPlayerNames();
}

float Client::getAnimationTime()
{
	return m_animation_time;
}

int Client::getCrackLevel()
{
	return m_crack_level;
}

void Client::setHighlighted(v3s16 pos, bool show_highlighted)
{
	m_show_highlighted = show_highlighted;
	v3s16 old_highlighted_pos = m_highlighted_pos;
	m_highlighted_pos = pos;
	addUpdateMeshTaskForNode(old_highlighted_pos, false, true);
	addUpdateMeshTaskForNode(m_highlighted_pos, false, true);
}

void Client::setCrack(int level, v3s16 pos)
{
	int old_crack_level = m_crack_level;
	v3s16 old_crack_pos = m_crack_pos;

	m_crack_level = level;
	m_crack_pos = pos;

	if(old_crack_level >= 0 && (level < 0 || pos != old_crack_pos))
	{
		// remove old crack
		addUpdateMeshTaskForNode(old_crack_pos, false, true);
	}
	if(level >= 0 && (old_crack_level < 0 || pos != old_crack_pos))
	{
		// add new crack
		addUpdateMeshTaskForNode(pos, false, true);
	}
}

u16 Client::getHP()
{
	Player *player = m_env.getLocalPlayer();
	assert(player != NULL);
	return player->hp;
}

u16 Client::getBreath()
{
	Player *player = m_env.getLocalPlayer();
	assert(player != NULL);
	return player->getBreath();
}

bool Client::getChatMessage(std::wstring &message)
{
	if(m_chat_queue.size() == 0)
		return false;
	message = m_chat_queue.front();
	m_chat_queue.pop();
	return true;
}

void Client::typeChatMessage(const std::wstring &message)
{
	// Discard empty line
	if(message == L"")
		return;

	// Send to others
	sendChatMessage(message);

	// Show locally
	if (message[0] == L'/')
	{
		m_chat_queue.push((std::wstring)L"issued command: " + message);
	}
	else
	{
		LocalPlayer *player = m_env.getLocalPlayer();
		assert(player != NULL);
		std::wstring name = narrow_to_wide(player->getName());
		m_chat_queue.push((std::wstring)L"<" + name + L"> " + message);
	}
}

void Client::addUpdateMeshTask(v3s16 p, bool ack_to_server, bool urgent)
{
	MapBlock *b = m_env.getMap().getBlockNoCreateNoEx(p);
	if(b == NULL)
		return;

	/*
		Create a task to update the mesh of the block
	*/

	MeshMakeData *data = new MeshMakeData(this, m_cache_enable_shaders);

	{
		//TimeTaker timer("data fill");
		// Release: ~0ms
		// Debug: 1-6ms, avg=2ms
		data->fill(b);
		data->setCrack(m_crack_level, m_crack_pos);
		data->setHighlighted(m_highlighted_pos, m_show_highlighted);
		data->setSmoothLighting(m_cache_smooth_lighting);
	}

	// Add task to queue
	m_mesh_update_thread.enqueueUpdate(p, data, ack_to_server, urgent);
}

void Client::addUpdateMeshTaskWithEdge(v3s16 blockpos, bool ack_to_server, bool urgent)
{
	try{
		addUpdateMeshTask(blockpos, ack_to_server, urgent);
	}
	catch(InvalidPositionException &e){}

	// Leading edge
	for (int i=0;i<6;i++)
	{
		try{
			v3s16 p = blockpos + g_6dirs[i];
			addUpdateMeshTask(p, false, urgent);
		}
		catch(InvalidPositionException &e){}
	}
}

void Client::addUpdateMeshTaskForNode(v3s16 nodepos, bool ack_to_server, bool urgent)
{
	{
		v3s16 p = nodepos;
		infostream<<"Client::addUpdateMeshTaskForNode(): "
				<<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
				<<std::endl;
	}

	v3s16 blockpos          = getNodeBlockPos(nodepos);
	v3s16 blockpos_relative = blockpos * MAP_BLOCKSIZE;

	try{
		addUpdateMeshTask(blockpos, ack_to_server, urgent);
	}
	catch(InvalidPositionException &e) {}

	// Leading edge
	if(nodepos.X == blockpos_relative.X){
		try{
			v3s16 p = blockpos + v3s16(-1,0,0);
			addUpdateMeshTask(p, false, urgent);
		}
		catch(InvalidPositionException &e){}
	}

	if(nodepos.Y == blockpos_relative.Y){
		try{
			v3s16 p = blockpos + v3s16(0,-1,0);
			addUpdateMeshTask(p, false, urgent);
		}
		catch(InvalidPositionException &e){}
	}

	if(nodepos.Z == blockpos_relative.Z){
		try{
			v3s16 p = blockpos + v3s16(0,0,-1);
			addUpdateMeshTask(p, false, urgent);
		}
		catch(InvalidPositionException &e){}
	}
}

ClientEvent Client::getClientEvent()
{
	ClientEvent event;
	if(m_client_event_queue.size() == 0) {
		event.type = CE_NONE;
	}
	else {
		event = m_client_event_queue.front();
		m_client_event_queue.pop();
	}
	return event;
}

float Client::mediaReceiveProgress()
{
	if (m_media_downloader)
		return m_media_downloader->getProgress();
	else
		return 1.0; // downloader only exists when not yet done
}

typedef struct TextureUpdateArgs {
	IrrlichtDevice *device;
	gui::IGUIEnvironment *guienv;
	u32 last_time_ms;
	u16 last_percent;
	const wchar_t* text_base;
} TextureUpdateArgs;

void texture_update_progress(void *args, u32 progress, u32 max_progress)
{
		TextureUpdateArgs* targs = (TextureUpdateArgs*) args;
		u16 cur_percent = ceil(progress / (double) max_progress * 100.);

		// update the loading menu -- if neccessary
		bool do_draw = false;
		u32 time_ms = targs->last_time_ms;
		if (cur_percent != targs->last_percent) {
			targs->last_percent = cur_percent;
			time_ms = getTimeMs();
			// only draw when the user will notice something:
			do_draw = (time_ms - targs->last_time_ms > 100);
		}

		if (do_draw) {
			targs->last_time_ms = time_ms;
			std::basic_stringstream<wchar_t> strm;
			strm << targs->text_base << " " << targs->last_percent << "%...";
			draw_load_screen(strm.str(), targs->device, targs->guienv, 0,
				72 + (u16) ((18. / 100.) * (double) targs->last_percent));
		}
}

void Client::afterContentReceived(IrrlichtDevice *device)
{
	infostream<<"Client::afterContentReceived() started"<<std::endl;
	assert(m_itemdef_received); // pre-condition
	assert(m_nodedef_received); // pre-condition
	assert(mediaReceived()); // pre-condition

	const wchar_t* text = wgettext("Loading textures...");

	// Clear cached pre-scaled 2D GUI images, as this cache
	// might have images with the same name but different
	// content from previous sessions.
	guiScalingCacheClear(device->getVideoDriver());

	// Rebuild inherited images and recreate textures
	infostream<<"- Rebuilding images and textures"<<std::endl;
	draw_load_screen(text,device, guienv, 0, 70);
	m_tsrc->rebuildImagesAndTextures();
	delete[] text;

	// Rebuild shaders
	infostream<<"- Rebuilding shaders"<<std::endl;
	text = wgettext("Rebuilding shaders...");
	draw_load_screen(text, device, guienv, 0, 71);
	m_shsrc->rebuildShaders();
	delete[] text;

	// Update node aliases
	infostream<<"- Updating node aliases"<<std::endl;
	text = wgettext("Initializing nodes...");
	draw_load_screen(text, device, guienv, 0, 72);
	m_nodedef->updateAliases(m_itemdef);
	std::string texture_path = g_settings->get("texture_path");
	if (texture_path != "" && fs::IsDir(texture_path))
		m_nodedef->applyTextureOverrides(texture_path + DIR_DELIM + "override.txt");
	m_nodedef->setNodeRegistrationStatus(true);
	m_nodedef->runNodeResolveCallbacks();
	delete[] text;

	// Update node textures and assign shaders to each tile
	infostream<<"- Updating node textures"<<std::endl;
	TextureUpdateArgs tu_args;
	tu_args.device = device;
	tu_args.guienv = guienv;
	tu_args.last_time_ms = getTimeMs();
	tu_args.last_percent = 0;
	tu_args.text_base =  wgettext("Initializing nodes");
	m_nodedef->updateTextures(this, texture_update_progress, &tu_args);
	delete[] tu_args.text_base;

	// Preload item textures and meshes if configured to
	if(g_settings->getBool("preload_item_visuals"))
	{
		verbosestream<<"Updating item textures and meshes"<<std::endl;
		text = wgettext("Item textures...");
		draw_load_screen(text, device, guienv, 0, 0);
		std::set<std::string> names = m_itemdef->getAll();
		size_t size = names.size();
		size_t count = 0;
		int percent = 0;
		for(std::set<std::string>::const_iterator
				i = names.begin(); i != names.end(); ++i)
		{
			// Asking for these caches the result
			m_itemdef->getInventoryTexture(*i, this);
			m_itemdef->getWieldMesh(*i, this);
			count++;
			percent = (count * 100 / size * 0.2) + 80;
			draw_load_screen(text, device, guienv, 0, percent);
		}
		delete[] text;
	}

	// Start mesh update thread after setting up content definitions
	infostream<<"- Starting mesh update thread"<<std::endl;
	m_mesh_update_thread.start();

	m_state = LC_Ready;
	sendReady();
	text = wgettext("Done!");
	draw_load_screen(text, device, guienv, 0, 100);
	infostream<<"Client::afterContentReceived() done"<<std::endl;
	delete[] text;
}

float Client::getRTT(void)
{
	return m_con.getPeerStat(PEER_ID_SERVER,con::AVG_RTT);
}

float Client::getCurRate(void)
{
	return ( m_con.getLocalStat(con::CUR_INC_RATE) +
			m_con.getLocalStat(con::CUR_DL_RATE));
}

float Client::getAvgRate(void)
{
	return ( m_con.getLocalStat(con::AVG_INC_RATE) +
			m_con.getLocalStat(con::AVG_DL_RATE));
}

void Client::makeScreenshot(IrrlichtDevice *device)
{
	irr::video::IVideoDriver *driver = device->getVideoDriver();
	irr::video::IImage* const raw_image = driver->createScreenShot();

	if (!raw_image)
		return;

	time_t t = time(NULL);
	struct tm *tm = localtime(&t);

	char timetstamp_c[64];
	strftime(timetstamp_c, sizeof(timetstamp_c), "%Y%m%d_%H%M%S", tm);

	std::string filename_base = g_settings->get("screenshot_path")
			+ DIR_DELIM
			+ std::string("screenshot_")
			+ std::string(timetstamp_c);
	std::string filename_ext = ".png";
	std::string filename;

	// Try to find a unique filename
	unsigned serial = 0;

	while (serial < SCREENSHOT_MAX_SERIAL_TRIES) {
		filename = filename_base + (serial > 0 ? ("_" + itos(serial)) : "") + filename_ext;
		std::ifstream tmp(filename.c_str());
		if (!tmp.good())
			break;	// File did not apparently exist, we'll go with it
		serial++;
	}

	if (serial == SCREENSHOT_MAX_SERIAL_TRIES) {
		infostream << "Could not find suitable filename for screenshot" << std::endl;
	} else {
		irr::video::IImage* const image =
				driver->createImage(video::ECF_R8G8B8, raw_image->getDimension());

		if (image) {
			raw_image->copyTo(image);

			std::ostringstream sstr;
			if (driver->writeImageToFile(image, filename.c_str())) {
				sstr << "Saved screenshot to '" << filename << "'";
			} else {
				sstr << "Failed to save screenshot '" << filename << "'";
			}
			m_chat_queue.push(narrow_to_wide(sstr.str()));
			infostream << sstr.str() << std::endl;
			image->drop();
		}
	}

	raw_image->drop();
}

// IGameDef interface
// Under envlock
IItemDefManager* Client::getItemDefManager()
{
	return m_itemdef;
}
INodeDefManager* Client::getNodeDefManager()
{
	return m_nodedef;
}
ICraftDefManager* Client::getCraftDefManager()
{
	return NULL;
	//return m_craftdef;
}
ITextureSource* Client::getTextureSource()
{
	return m_tsrc;
}
IShaderSource* Client::getShaderSource()
{
	return m_shsrc;
}
scene::ISceneManager* Client::getSceneManager()
{
	return m_device->getSceneManager();
}
u16 Client::allocateUnknownNodeId(const std::string &name)
{
	errorstream << "Client::allocateUnknownNodeId(): "
			<< "Client cannot allocate node IDs" << std::endl;
	FATAL_ERROR("Client allocated unknown node");

	return CONTENT_IGNORE;
}
ISoundManager* Client::getSoundManager()
{
	return m_sound;
}
MtEventManager* Client::getEventManager()
{
	return m_event;
}

ParticleManager* Client::getParticleManager()
{
	return &m_particle_manager;
}

scene::IAnimatedMesh* Client::getMesh(const std::string &filename)
{
	StringMap::const_iterator it = m_mesh_data.find(filename);
	if (it == m_mesh_data.end()) {
		errorstream << "Client::getMesh(): Mesh not found: \"" << filename
			<< "\"" << std::endl;
		return NULL;
	}
	const std::string &data    = it->second;
	scene::ISceneManager *smgr = m_device->getSceneManager();

	// Create the mesh, remove it from cache and return it
	// This allows unique vertex colors and other properties for each instance
	Buffer<char> data_rw(data.c_str(), data.size()); // Const-incorrect Irrlicht
	io::IFileSystem *irrfs = m_device->getFileSystem();
	io::IReadFile *rfile   = irrfs->createMemoryReadFile(
			*data_rw, data_rw.getSize(), filename.c_str());
	FATAL_ERROR_IF(!rfile, "Could not create/open RAM file");

	scene::IAnimatedMesh *mesh = smgr->getMesh(rfile);
	rfile->drop();
	// NOTE: By playing with Irrlicht refcounts, maybe we could cache a bunch
	// of uniquely named instances and re-use them
	mesh->grab();
	smgr->getMeshCache()->removeMesh(mesh);
	return mesh;
}