src/client.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include <iostream>
  21 #include <algorithm>
  22 #include <sstream>
  23 #include <cmath>
  24 #include <IFileSystem.h>
  25 #include "threading/mutex_auto_lock.h"
  26 #include "util/auth.h"
  27 #include "util/directiontables.h"
  28 #include "util/pointedthing.h"
  29 #include "util/serialize.h"
  30 #include "util/string.h"
  31 #include "util/srp.h"
  32 #include "client.h"
  33 #include "network/clientopcodes.h"
  34 #include "filesys.h"
  35 #include "mapblock_mesh.h"
  36 #include "mapblock.h"
  37 #include "minimap.h"
  38 #include "mods.h"
  39 #include "profiler.h"
  40 #include "gettext.h"
  41 #include "clientmap.h"
  42 #include "clientmedia.h"
  43 #include "version.h"
  44 #include "drawscene.h"
  45 #include "database-sqlite3.h"
  46 #include "serialization.h"
  47 #include "guiscalingfilter.h"
  48 #include "script/clientscripting.h"
  49
  50 extern gui::IGUIEnvironment* guienv;
  51
  52 /*
  53         QueuedMeshUpdate
  54 */
  55
  56 QueuedMeshUpdate::QueuedMeshUpdate():
  57         p(-1337,-1337,-1337),
  58         data(NULL),
  59         ack_block_to_server(false)
  60 {
  61 }
  62
  63 QueuedMeshUpdate::~QueuedMeshUpdate()
  64 {
  65         if(data)
  66                 delete data;
  67 }
  68
  69 /*
  70         MeshUpdateQueue
  71 */
  72
  73 MeshUpdateQueue::MeshUpdateQueue()
  74 {
  75 }
  76
  77 MeshUpdateQueue::~MeshUpdateQueue()
  78 {
  79         MutexAutoLock lock(m_mutex);
  80
  81         for(std::vector<QueuedMeshUpdate*>::iterator
  82                         i = m_queue.begin();
  83                         i != m_queue.end(); ++i)
  84         {
  85                 QueuedMeshUpdate *q = *i;
  86                 delete q;
  87         }
  88 }
  89
  90 /*
  91         peer_id=0 adds with nobody to send to
  92 */
  93 void MeshUpdateQueue::addBlock(v3s16 p, MeshMakeData *data, bool ack_block_to_server, bool urgent)
  94 {
  95         DSTACK(FUNCTION_NAME);
  96
  97         assert(data);   // pre-condition
  98
  99         MutexAutoLock lock(m_mutex);
 100
 101         if(urgent)
 102                 m_urgents.insert(p);
 103
 104         /*
 105                 Find if block is already in queue.
 106                 If it is, update the data and quit.
 107         */
 108         for(std::vector<QueuedMeshUpdate*>::iterator
 109                         i = m_queue.begin();
 110                         i != m_queue.end(); ++i)
 111         {
 112                 QueuedMeshUpdate *q = *i;
 113                 if(q->p == p)
 114                 {
 115                         if(q->data)
 116                                 delete q->data;
 117                         q->data = data;
 118                         if(ack_block_to_server)
 119                                 q->ack_block_to_server = true;
 120                         return;
 121                 }
 122         }
 123
 124         /*
 125                 Add the block
 126         */
 127         QueuedMeshUpdate *q = new QueuedMeshUpdate;
 128         q->p = p;
 129         q->data = data;
 130         q->ack_block_to_server = ack_block_to_server;
 131         m_queue.push_back(q);
 132 }
 133
 134 // Returned pointer must be deleted
 135 // Returns NULL if queue is empty
 136 QueuedMeshUpdate *MeshUpdateQueue::pop()
 137 {
 138         MutexAutoLock lock(m_mutex);
 139
 140         bool must_be_urgent = !m_urgents.empty();
 141         for(std::vector<QueuedMeshUpdate*>::iterator
 142                         i = m_queue.begin();
 143                         i != m_queue.end(); ++i)
 144         {
 145                 QueuedMeshUpdate *q = *i;
 146                 if(must_be_urgent && m_urgents.count(q->p) == 0)
 147                         continue;
 148                 m_queue.erase(i);
 149                 m_urgents.erase(q->p);
 150                 return q;
 151         }
 152         return NULL;
 153 }
 154
 155 /*
 156         MeshUpdateThread
 157 */
 158
 159 void MeshUpdateThread::enqueueUpdate(v3s16 p, MeshMakeData *data,
 160                 bool ack_block_to_server, bool urgent)
 161 {
 162         m_queue_in.addBlock(p, data, ack_block_to_server, urgent);
 163         deferUpdate();
 164 }
 165
 166 void MeshUpdateThread::doUpdate()
 167 {
 168         QueuedMeshUpdate *q;
 169         while ((q = m_queue_in.pop())) {
 170
 171                 ScopeProfiler sp(g_profiler, "Client: Mesh making");
 172
 173                 MapBlockMesh *mesh_new = new MapBlockMesh(q->data, m_camera_offset);
 174
 175                 MeshUpdateResult r;
 176                 r.p = q->p;
 177                 r.mesh = mesh_new;
 178                 r.ack_block_to_server = q->ack_block_to_server;
 179
 180                 m_queue_out.push_back(r);
 181
 182                 delete q;
 183         }
 184 }
 185
 186 /*
 187         Client
 188 */
 189
 190 Client::Client(
 191                 IrrlichtDevice *device,
 192                 const char *playername,
 193                 std::string password,
 194                 MapDrawControl &control,
 195                 IWritableTextureSource *tsrc,
 196                 IWritableShaderSource *shsrc,
 197                 IWritableItemDefManager *itemdef,
 198                 IWritableNodeDefManager *nodedef,
 199                 ISoundManager *sound,
 200                 MtEventManager *event,
 201                 bool ipv6
 202 ):
 203         m_packetcounter_timer(0.0),
 204         m_connection_reinit_timer(0.1),
 205         m_avg_rtt_timer(0.0),
 206         m_playerpos_send_timer(0.0),
 207         m_ignore_damage_timer(0.0),
 208         m_tsrc(tsrc),
 209         m_shsrc(shsrc),
 210         m_itemdef(itemdef),
 211         m_nodedef(nodedef),
 212         m_sound(sound),
 213         m_event(event),
 214         m_mesh_update_thread(),
 215         m_env(
 216                 new ClientMap(this, control,
 217                         device->getSceneManager()->getRootSceneNode(),
 218                         device->getSceneManager(), 666),
 219                 device->getSceneManager(),
 220                 tsrc, this, device
 221         ),
 222         m_particle_manager(&m_env),
 223         m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, ipv6, this),
 224         m_device(device),
 225         m_camera(NULL),
 226         m_minimap_disabled_by_server(false),
 227         m_server_ser_ver(SER_FMT_VER_INVALID),
 228         m_proto_ver(0),
 229         m_playeritem(0),
 230         m_inventory_updated(false),
 231         m_inventory_from_server(NULL),
 232         m_inventory_from_server_age(0.0),
 233         m_animation_time(0),
 234         m_crack_level(-1),
 235         m_crack_pos(0,0,0),
 236         m_map_seed(0),
 237         m_password(password),
 238         m_chosen_auth_mech(AUTH_MECHANISM_NONE),
 239         m_auth_data(NULL),
 240         m_access_denied(false),
 241         m_access_denied_reconnect(false),
 242         m_itemdef_received(false),
 243         m_nodedef_received(false),
 244         m_media_downloader(new ClientMediaDownloader()),
 245         m_time_of_day_set(false),
 246         m_last_time_of_day_f(-1),
 247         m_time_of_day_update_timer(0),
 248         m_recommended_send_interval(0.1),
 249         m_removed_sounds_check_timer(0),
 250         m_state(LC_Created),
 251         m_localdb(NULL)
 252 {
 253         // Add local player
 254         m_env.setLocalPlayer(new LocalPlayer(this, playername));
 255
 256         m_mapper = new Mapper(device, this);
 257         m_cache_save_interval = g_settings->getU16("server_map_save_interval");
 258
 259         m_cache_smooth_lighting = g_settings->getBool("smooth_lighting");
 260         m_cache_enable_shaders  = g_settings->getBool("enable_shaders");
 261         m_cache_use_tangent_vertices = m_cache_enable_shaders && (
 262                 g_settings->getBool("enable_bumpmapping") ||
 263                 g_settings->getBool("enable_parallax_occlusion"));
 264
 265         m_script = new ClientScripting(this);
 266 }
 267
 268 void Client::initMods()
 269 {
 270         std::string script_path = getBuiltinLuaPath() + DIR_DELIM "init.lua";
 271
 272         m_script->loadMod(script_path, BUILTIN_MOD_NAME);
 273 }
 274
 275 const std::string Client::getBuiltinLuaPath()
 276 {
 277         return porting::path_share + DIR_DELIM + "builtin";
 278 }
 279
 280 const std::vector<ModSpec>& Client::getMods() const
 281 {
 282         static std::vector<ModSpec> client_modspec_temp;
 283         return client_modspec_temp;
 284 }
 285
 286 const ModSpec* Client::getModSpec(const std::string &modname) const
 287 {
 288         return NULL;
 289 }
 290
 291 void Client::Stop()
 292 {
 293         m_script->on_shutdown();
 294         //request all client managed threads to stop
 295         m_mesh_update_thread.stop();
 296         // Save local server map
 297         if (m_localdb) {
 298                 infostream << "Local map saving ended." << std::endl;
 299                 m_localdb->endSave();
 300         }
 301
 302         delete m_script;
 303 }
 304
 305 bool Client::isShutdown()
 306 {
 307
 308         if (!m_mesh_update_thread.isRunning()) return true;
 309
 310         return false;
 311 }
 312
 313 Client::~Client()
 314 {
 315         m_con.Disconnect();
 316
 317         m_mesh_update_thread.stop();
 318         m_mesh_update_thread.wait();
 319         while (!m_mesh_update_thread.m_queue_out.empty()) {
 320                 MeshUpdateResult r = m_mesh_update_thread.m_queue_out.pop_frontNoEx();
 321                 delete r.mesh;
 322         }
 323
 324
 325         delete m_inventory_from_server;
 326
 327         // Delete detached inventories
 328         for (UNORDERED_MAP<std::string, Inventory*>::iterator
 329                         i = m_detached_inventories.begin();
 330                         i != m_detached_inventories.end(); ++i) {
 331                 delete i->second;
 332         }
 333
 334         // cleanup 3d model meshes on client shutdown
 335         while (m_device->getSceneManager()->getMeshCache()->getMeshCount() != 0) {
 336                 scene::IAnimatedMesh *mesh =
 337                         m_device->getSceneManager()->getMeshCache()->getMeshByIndex(0);
 338
 339                 if (mesh != NULL)
 340                         m_device->getSceneManager()->getMeshCache()->removeMesh(mesh);
 341         }
 342
 343         delete m_mapper;
 344 }
 345
 346 void Client::connect(Address address,
 347                 const std::string &address_name,
 348                 bool is_local_server)
 349 {
 350         DSTACK(FUNCTION_NAME);
 351
 352         initLocalMapSaving(address, address_name, is_local_server);
 353
 354         m_con.SetTimeoutMs(0);
 355         m_con.Connect(address);
 356 }
 357
 358 void Client::step(float dtime)
 359 {
 360         DSTACK(FUNCTION_NAME);
 361
 362         // Limit a bit
 363         if(dtime > 2.0)
 364                 dtime = 2.0;
 365
 366         if(m_ignore_damage_timer > dtime)
 367                 m_ignore_damage_timer -= dtime;
 368         else
 369                 m_ignore_damage_timer = 0.0;
 370
 371         m_animation_time += dtime;
 372         if(m_animation_time > 60.0)
 373                 m_animation_time -= 60.0;
 374
 375         m_time_of_day_update_timer += dtime;
 376
 377         ReceiveAll();
 378
 379         /*
 380                 Packet counter
 381         */
 382         {
 383                 float &counter = m_packetcounter_timer;
 384                 counter -= dtime;
 385                 if(counter <= 0.0)
 386                 {
 387                         counter = 20.0;
 388
 389                         infostream << "Client packetcounter (" << m_packetcounter_timer
 390                                         << "):"<<std::endl;
 391                         m_packetcounter.print(infostream);
 392                         m_packetcounter.clear();
 393                 }
 394         }
 395
 396         // UGLY hack to fix 2 second startup delay caused by non existent
 397         // server client startup synchronization in local server or singleplayer mode
 398         static bool initial_step = true;
 399         if (initial_step) {
 400                 initial_step = false;
 401         }
 402         else if(m_state == LC_Created) {
 403                 float &counter = m_connection_reinit_timer;
 404                 counter -= dtime;
 405                 if(counter <= 0.0) {
 406                         counter = 2.0;
 407
 408                         LocalPlayer *myplayer = m_env.getLocalPlayer();
 409                         FATAL_ERROR_IF(myplayer == NULL, "Local player not found in environment.");
 410
 411                         u16 proto_version_min = g_settings->getFlag("send_pre_v25_init") ?
 412                                 CLIENT_PROTOCOL_VERSION_MIN_LEGACY : CLIENT_PROTOCOL_VERSION_MIN;
 413
 414                         if (proto_version_min < 25) {
 415                                 // Send TOSERVER_INIT_LEGACY
 416                                 // [0] u16 TOSERVER_INIT_LEGACY
 417                                 // [2] u8 SER_FMT_VER_HIGHEST_READ
 418                                 // [3] u8[20] player_name
 419                                 // [23] u8[28] password (new in some version)
 420                                 // [51] u16 minimum supported network protocol version (added sometime)
 421                                 // [53] u16 maximum supported network protocol version (added later than the previous one)
 422
 423                                 char pName[PLAYERNAME_SIZE];
 424                                 char pPassword[PASSWORD_SIZE];
 425                                 memset(pName, 0, PLAYERNAME_SIZE * sizeof(char));
 426                                 memset(pPassword, 0, PASSWORD_SIZE * sizeof(char));
 427
 428                                 std::string hashed_password = translate_password(myplayer->getName(), m_password);
 429                                 snprintf(pName, PLAYERNAME_SIZE, "%s", myplayer->getName());
 430                                 snprintf(pPassword, PASSWORD_SIZE, "%s", hashed_password.c_str());
 431
 432                                 sendLegacyInit(pName, pPassword);
 433                         }
 434                         if (CLIENT_PROTOCOL_VERSION_MAX >= 25)
 435                                 sendInit(myplayer->getName());
 436                 }
 437
 438                 // Not connected, return
 439                 return;
 440         }
 441
 442         /*
 443                 Do stuff if connected
 444         */
 445
 446         /*
 447                 Run Map's timers and unload unused data
 448         */
 449         const float map_timer_and_unload_dtime = 5.25;
 450         if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime)) {
 451                 ScopeProfiler sp(g_profiler, "Client: map timer and unload");
 452                 std::vector<v3s16> deleted_blocks;
 453                 m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
 454                         g_settings->getFloat("client_unload_unused_data_timeout"),
 455                         g_settings->getS32("client_mapblock_limit"),
 456                         &deleted_blocks);
 457
 458                 /*
 459                         Send info to server
 460                         NOTE: This loop is intentionally iterated the way it is.
 461                 */
 462
 463                 std::vector<v3s16>::iterator i = deleted_blocks.begin();
 464                 std::vector<v3s16> sendlist;
 465                 for(;;) {
 466                         if(sendlist.size() == 255 || i == deleted_blocks.end()) {
 467                                 if(sendlist.empty())
 468                                         break;
 469                                 /*
 470                                         [0] u16 command
 471                                         [2] u8 count
 472                                         [3] v3s16 pos_0
 473                                         [3+6] v3s16 pos_1
 474                                         ...
 475                                 */
 476
 477                                 sendDeletedBlocks(sendlist);
 478
 479                                 if(i == deleted_blocks.end())
 480                                         break;
 481
 482                                 sendlist.clear();
 483                         }
 484
 485                         sendlist.push_back(*i);
 486                         ++i;
 487                 }
 488         }
 489
 490         /*
 491                 Handle environment
 492         */
 493         // Control local player (0ms)
 494         LocalPlayer *player = m_env.getLocalPlayer();
 495         assert(player != NULL);
 496         player->applyControl(dtime);
 497
 498         // Step environment
 499         m_env.step(dtime);
 500
 501         /*
 502                 Get events
 503         */
 504         for(;;) {
 505                 ClientEnvEvent event = m_env.getClientEvent();
 506                 if(event.type == CEE_NONE) {
 507                         break;
 508                 }
 509                 else if(event.type == CEE_PLAYER_DAMAGE) {
 510                         if(m_ignore_damage_timer <= 0) {
 511                                 u8 damage = event.player_damage.amount;
 512
 513                                 if(event.player_damage.send_to_server)
 514                                         sendDamage(damage);
 515
 516                                 // Add to ClientEvent queue
 517                                 ClientEvent event;
 518                                 event.type = CE_PLAYER_DAMAGE;
 519                                 event.player_damage.amount = damage;
 520                                 m_client_event_queue.push(event);
 521                         }
 522                 }
 523                 // Protocol v29 or greater obsoleted this event
 524                 else if (event.type == CEE_PLAYER_BREATH && m_proto_ver < 29) {
 525                         u16 breath = event.player_breath.amount;
 526                         sendBreath(breath);
 527                 }
 528         }
 529
 530         /*
 531                 Print some info
 532         */
 533         float &counter = m_avg_rtt_timer;
 534         counter += dtime;
 535         if(counter >= 10) {
 536                 counter = 0.0;
 537                 // connectedAndInitialized() is true, peer exists.
 538                 float avg_rtt = getRTT();
 539                 infostream << "Client: avg_rtt=" << avg_rtt << std::endl;
 540         }
 541
 542         /*
 543                 Send player position to server
 544         */
 545         {
 546                 float &counter = m_playerpos_send_timer;
 547                 counter += dtime;
 548                 if((m_state == LC_Ready) && (counter >= m_recommended_send_interval))
 549                 {
 550                         counter = 0.0;
 551                         sendPlayerPos();
 552                 }
 553         }
 554
 555         /*
 556                 Replace updated meshes
 557         */
 558         {
 559                 int num_processed_meshes = 0;
 560                 while (!m_mesh_update_thread.m_queue_out.empty())
 561                 {
 562                         num_processed_meshes++;
 563
 564                         MinimapMapblock *minimap_mapblock = NULL;
 565                         bool do_mapper_update = true;
 566
 567                         MeshUpdateResult r = m_mesh_update_thread.m_queue_out.pop_frontNoEx();
 568                         MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(r.p);
 569                         if (block) {
 570                                 // Delete the old mesh
 571                                 if (block->mesh != NULL) {
 572                                         delete block->mesh;
 573                                         block->mesh = NULL;
 574                                 }
 575
 576                                 if (r.mesh) {
 577                                         minimap_mapblock = r.mesh->moveMinimapMapblock();
 578                                         if (minimap_mapblock == NULL)
 579                                                 do_mapper_update = false;
 580                                 }
 581
 582                                 if (r.mesh && r.mesh->getMesh()->getMeshBufferCount() == 0) {
 583                                         delete r.mesh;
 584                                 } else {
 585                                         // Replace with the new mesh
 586                                         block->mesh = r.mesh;
 587                                 }
 588                         } else {
 589                                 delete r.mesh;
 590                         }
 591
 592                         if (do_mapper_update)
 593                                 m_mapper->addBlock(r.p, minimap_mapblock);
 594
 595                         if (r.ack_block_to_server) {
 596                                 /*
 597                                         Acknowledge block
 598                                         [0] u8 count
 599                                         [1] v3s16 pos_0
 600                                 */
 601                                 sendGotBlocks(r.p);
 602                         }
 603                 }
 604
 605                 if (num_processed_meshes > 0)
 606                         g_profiler->graphAdd("num_processed_meshes", num_processed_meshes);
 607         }
 608
 609         /*
 610                 Load fetched media
 611         */
 612         if (m_media_downloader && m_media_downloader->isStarted()) {
 613                 m_media_downloader->step(this);
 614                 if (m_media_downloader->isDone()) {
 615                         received_media();
 616                         delete m_media_downloader;
 617                         m_media_downloader = NULL;
 618                 }
 619         }
 620
 621         /*
 622                 If the server didn't update the inventory in a while, revert
 623                 the local inventory (so the player notices the lag problem
 624                 and knows something is wrong).
 625         */
 626         if(m_inventory_from_server)
 627         {
 628                 float interval = 10.0;
 629                 float count_before = floor(m_inventory_from_server_age / interval);
 630
 631                 m_inventory_from_server_age += dtime;
 632
 633                 float count_after = floor(m_inventory_from_server_age / interval);
 634
 635                 if(count_after != count_before)
 636                 {
 637                         // Do this every <interval> seconds after TOCLIENT_INVENTORY
 638                         // Reset the locally changed inventory to the authoritative inventory
 639                         LocalPlayer *player = m_env.getLocalPlayer();
 640                         player->inventory = *m_inventory_from_server;
 641                         m_inventory_updated = true;
 642                 }
 643         }
 644
 645         /*
 646                 Update positions of sounds attached to objects
 647         */
 648         {
 649                 for(UNORDERED_MAP<int, u16>::iterator i = m_sounds_to_objects.begin();
 650                                 i != m_sounds_to_objects.end(); ++i) {
 651                         int client_id = i->first;
 652                         u16 object_id = i->second;
 653                         ClientActiveObject *cao = m_env.getActiveObject(object_id);
 654                         if(!cao)
 655                                 continue;
 656                         v3f pos = cao->getPosition();
 657                         m_sound->updateSoundPosition(client_id, pos);
 658                 }
 659         }
 660
 661         /*
 662                 Handle removed remotely initiated sounds
 663         */
 664         m_removed_sounds_check_timer += dtime;
 665         if(m_removed_sounds_check_timer >= 2.32) {
 666                 m_removed_sounds_check_timer = 0;
 667                 // Find removed sounds and clear references to them
 668                 std::vector<s32> removed_server_ids;
 669                 for(UNORDERED_MAP<s32, int>::iterator i = m_sounds_server_to_client.begin();
 670                                 i != m_sounds_server_to_client.end();) {
 671                         s32 server_id = i->first;
 672                         int client_id = i->second;
 673                         ++i;
 674                         if(!m_sound->soundExists(client_id)) {
 675                                 m_sounds_server_to_client.erase(server_id);
 676                                 m_sounds_client_to_server.erase(client_id);
 677                                 m_sounds_to_objects.erase(client_id);
 678                                 removed_server_ids.push_back(server_id);
 679                         }
 680                 }
 681
 682                 // Sync to server
 683                 if(!removed_server_ids.empty()) {
 684                         sendRemovedSounds(removed_server_ids);
 685                 }
 686         }
 687
 688         // Write server map
 689         if (m_localdb && m_localdb_save_interval.step(dtime,
 690                         m_cache_save_interval)) {
 691                 m_localdb->endSave();
 692                 m_localdb->beginSave();
 693         }
 694 }
 695
 696 bool Client::loadMedia(const std::string &data, const std::string &filename)
 697 {
 698         // Silly irrlicht's const-incorrectness
 699         Buffer<char> data_rw(data.c_str(), data.size());
 700
 701         std::string name;
 702
 703         const char *image_ext[] = {
 704                 ".png", ".jpg", ".bmp", ".tga",
 705                 ".pcx", ".ppm", ".psd", ".wal", ".rgb",
 706                 NULL
 707         };
 708         name = removeStringEnd(filename, image_ext);
 709         if(name != "")
 710         {
 711                 verbosestream<<"Client: Attempting to load image "
 712                 <<"file \""<<filename<<"\""<<std::endl;
 713
 714                 io::IFileSystem *irrfs = m_device->getFileSystem();
 715                 video::IVideoDriver *vdrv = m_device->getVideoDriver();
 716
 717                 // Create an irrlicht memory file
 718                 io::IReadFile *rfile = irrfs->createMemoryReadFile(
 719                                 *data_rw, data_rw.getSize(), "_tempreadfile");
 720
 721                 FATAL_ERROR_IF(!rfile, "Could not create irrlicht memory file.");
 722
 723                 // Read image
 724                 video::IImage *img = vdrv->createImageFromFile(rfile);
 725                 if(!img){
 726                         errorstream<<"Client: Cannot create image from data of "
 727                                         <<"file \""<<filename<<"\""<<std::endl;
 728                         rfile->drop();
 729                         return false;
 730                 }
 731                 else {
 732                         m_tsrc->insertSourceImage(filename, img);
 733                         img->drop();
 734                         rfile->drop();
 735                         return true;
 736                 }
 737         }
 738
 739         const char *sound_ext[] = {
 740                 ".0.ogg", ".1.ogg", ".2.ogg", ".3.ogg", ".4.ogg",
 741                 ".5.ogg", ".6.ogg", ".7.ogg", ".8.ogg", ".9.ogg",
 742                 ".ogg", NULL
 743         };
 744         name = removeStringEnd(filename, sound_ext);
 745         if(name != "")
 746         {
 747                 verbosestream<<"Client: Attempting to load sound "
 748                 <<"file \""<<filename<<"\""<<std::endl;
 749                 m_sound->loadSoundData(name, data);
 750                 return true;
 751         }
 752
 753         const char *model_ext[] = {
 754                 ".x", ".b3d", ".md2", ".obj",
 755                 NULL
 756         };
 757         name = removeStringEnd(filename, model_ext);
 758         if(name != "")
 759         {
 760                 verbosestream<<"Client: Storing model into memory: "
 761                                 <<"\""<<filename<<"\""<<std::endl;
 762                 if(m_mesh_data.count(filename))
 763                         errorstream<<"Multiple models with name \""<<filename.c_str()
 764                                         <<"\" found; replacing previous model"<<std::endl;
 765                 m_mesh_data[filename] = data;
 766                 return true;
 767         }
 768
 769         errorstream<<"Client: Don't know how to load file \""
 770                         <<filename<<"\""<<std::endl;
 771         return false;
 772 }
 773
 774 // Virtual methods from con::PeerHandler
 775 void Client::peerAdded(con::Peer *peer)
 776 {
 777         infostream << "Client::peerAdded(): peer->id="
 778                         << peer->id << std::endl;
 779 }
 780 void Client::deletingPeer(con::Peer *peer, bool timeout)
 781 {
 782         infostream << "Client::deletingPeer(): "
 783                         "Server Peer is getting deleted "
 784                         << "(timeout=" << timeout << ")" << std::endl;
 785
 786         if (timeout) {
 787                 m_access_denied = true;
 788                 m_access_denied_reason = gettext("Connection timed out.");
 789         }
 790 }
 791
 792 /*
 793         u16 command
 794         u16 number of files requested
 795         for each file {
 796                 u16 length of name
 797                 string name
 798         }
 799 */
 800 void Client::request_media(const std::vector<std::string> &file_requests)
 801 {
 802         std::ostringstream os(std::ios_base::binary);
 803         writeU16(os, TOSERVER_REQUEST_MEDIA);
 804         size_t file_requests_size = file_requests.size();
 805
 806         FATAL_ERROR_IF(file_requests_size > 0xFFFF, "Unsupported number of file requests");
 807
 808         // Packet dynamicly resized
 809         NetworkPacket pkt(TOSERVER_REQUEST_MEDIA, 2 + 0);
 810
 811         pkt << (u16) (file_requests_size & 0xFFFF);
 812
 813         for(std::vector<std::string>::const_iterator i = file_requests.begin();
 814                         i != file_requests.end(); ++i) {
 815                 pkt << (*i);
 816         }
 817
 818         Send(&pkt);
 819
 820         infostream << "Client: Sending media request list to server ("
 821                         << file_requests.size() << " files. packet size)" << std::endl;
 822 }
 823
 824 void Client::received_media()
 825 {
 826         NetworkPacket pkt(TOSERVER_RECEIVED_MEDIA, 0);
 827         Send(&pkt);
 828         infostream << "Client: Notifying server that we received all media"
 829                         << std::endl;
 830 }
 831
 832 void Client::initLocalMapSaving(const Address &address,
 833                 const std::string &hostname,
 834                 bool is_local_server)
 835 {
 836         if (!g_settings->getBool("enable_local_map_saving") || is_local_server) {
 837                 return;
 838         }
 839
 840         const std::string world_path = porting::path_user
 841                 + DIR_DELIM + "worlds"
 842                 + DIR_DELIM + "server_"
 843                 + hostname + "_" + std::to_string(address.getPort());
 844
 845         fs::CreateAllDirs(world_path);
 846
 847         m_localdb = new Database_SQLite3(world_path);
 848         m_localdb->beginSave();
 849         actionstream << "Local map saving started, map will be saved at '" << world_path << "'" << std::endl;
 850 }
 851
 852 void Client::ReceiveAll()
 853 {
 854         DSTACK(FUNCTION_NAME);
 855         u32 start_ms = porting::getTimeMs();
 856         for(;;)
 857         {
 858                 // Limit time even if there would be huge amounts of data to
 859                 // process
 860                 if(porting::getTimeMs() > start_ms + 100)
 861                         break;
 862
 863                 try {
 864                         Receive();
 865                         g_profiler->graphAdd("client_received_packets", 1);
 866                 }
 867                 catch(con::NoIncomingDataException &e) {
 868                         break;
 869                 }
 870                 catch(con::InvalidIncomingDataException &e) {
 871                         infostream<<"Client::ReceiveAll(): "
 872                                         "InvalidIncomingDataException: what()="
 873                                         <<e.what()<<std::endl;
 874                 }
 875         }
 876 }
 877
 878 void Client::Receive()
 879 {
 880         DSTACK(FUNCTION_NAME);
 881         NetworkPacket pkt;
 882         m_con.Receive(&pkt);
 883         ProcessData(&pkt);
 884 }
 885
 886 inline void Client::handleCommand(NetworkPacket* pkt)
 887 {
 888         const ToClientCommandHandler& opHandle = toClientCommandTable[pkt->getCommand()];
 889         (this->*opHandle.handler)(pkt);
 890 }
 891
 892 /*
 893         sender_peer_id given to this shall be quaranteed to be a valid peer
 894 */
 895 void Client::ProcessData(NetworkPacket *pkt)
 896 {
 897         DSTACK(FUNCTION_NAME);
 898
 899         ToClientCommand command = (ToClientCommand) pkt->getCommand();
 900         u32 sender_peer_id = pkt->getPeerId();
 901
 902         //infostream<<"Client: received command="<<command<<std::endl;
 903         m_packetcounter.add((u16)command);
 904
 905         /*
 906                 If this check is removed, be sure to change the queue
 907                 system to know the ids
 908         */
 909         if(sender_peer_id != PEER_ID_SERVER) {
 910                 infostream << "Client::ProcessData(): Discarding data not "
 911                         "coming from server: peer_id=" << sender_peer_id
 912                         << std::endl;
 913                 return;
 914         }
 915
 916         // Command must be handled into ToClientCommandHandler
 917         if (command >= TOCLIENT_NUM_MSG_TYPES) {
 918                 infostream << "Client: Ignoring unknown command "
 919                         << command << std::endl;
 920                 return;
 921         }
 922
 923         /*
 924          * Those packets are handled before m_server_ser_ver is set, it's normal
 925          * But we must use the new ToClientConnectionState in the future,
 926          * as a byte mask
 927          */
 928         if(toClientCommandTable[command].state == TOCLIENT_STATE_NOT_CONNECTED) {
 929                 handleCommand(pkt);
 930                 return;
 931         }
 932
 933         if(m_server_ser_ver == SER_FMT_VER_INVALID) {
 934                 infostream << "Client: Server serialization"
 935                                 " format invalid or not initialized."
 936                                 " Skipping incoming command=" << command << std::endl;
 937                 return;
 938         }
 939
 940         /*
 941           Handle runtime commands
 942         */
 943
 944         handleCommand(pkt);
 945 }
 946
 947 void Client::Send(NetworkPacket* pkt)
 948 {
 949         m_con.Send(PEER_ID_SERVER,
 950                 serverCommandFactoryTable[pkt->getCommand()].channel,
 951                 pkt,
 952                 serverCommandFactoryTable[pkt->getCommand()].reliable);
 953 }
 954
 955 // Will fill up 12 + 12 + 4 + 4 + 4 bytes
 956 void writePlayerPos(LocalPlayer *myplayer, ClientMap *clientMap, NetworkPacket *pkt)
 957 {
 958         v3f pf           = myplayer->getPosition() * 100;
 959         v3f sf           = myplayer->getSpeed() * 100;
 960         s32 pitch        = myplayer->getPitch() * 100;
 961         s32 yaw          = myplayer->getYaw() * 100;
 962         u32 keyPressed   = myplayer->keyPressed;
 963         // scaled by 80, so that pi can fit into a u8
 964         u8 fov           = clientMap->getCameraFov() * 80;
 965         u8 wanted_range  = MYMIN(255,
 966                         std::ceil(clientMap->getControl().wanted_range / MAP_BLOCKSIZE));
 967
 968         v3s32 position(pf.X, pf.Y, pf.Z);
 969         v3s32 speed(sf.X, sf.Y, sf.Z);
 970
 971         /*
 972                 Format:
 973                 [0] v3s32 position*100
 974                 [12] v3s32 speed*100
 975                 [12+12] s32 pitch*100
 976                 [12+12+4] s32 yaw*100
 977                 [12+12+4+4] u32 keyPressed
 978                 [12+12+4+4+4] u8 fov*80
 979                 [12+12+4+4+4+1] u8 ceil(wanted_range / MAP_BLOCKSIZE)
 980         */
 981         *pkt << position << speed << pitch << yaw << keyPressed;
 982         *pkt << fov << wanted_range;
 983 }
 984
 985 void Client::interact(u8 action, const PointedThing& pointed)
 986 {
 987         if(m_state != LC_Ready) {
 988                 errorstream << "Client::interact() "
 989                                 "Canceled (not connected)"
 990                                 << std::endl;
 991                 return;
 992         }
 993
 994         LocalPlayer *myplayer = m_env.getLocalPlayer();
 995         if (myplayer == NULL)
 996                 return;
 997
 998         /*
 999                 [0] u16 command
1000                 [2] u8 action
1001                 [3] u16 item
1002                 [5] u32 length of the next item (plen)
1003                 [9] serialized PointedThing
1004                 [9 + plen] player position information
1005                 actions:
1006                 0: start digging (from undersurface) or use
1007                 1: stop digging (all parameters ignored)
1008                 2: digging completed
1009                 3: place block or item (to abovesurface)
1010                 4: use item
1011                 5: perform secondary action of item
1012         */
1013
1014         NetworkPacket pkt(TOSERVER_INTERACT, 1 + 2 + 0);
1015
1016         pkt << action;
1017         pkt << (u16)getPlayerItem();
1018
1019         std::ostringstream tmp_os(std::ios::binary);
1020         pointed.serialize(tmp_os);
1021
1022         pkt.putLongString(tmp_os.str());
1023
1024         writePlayerPos(myplayer, &m_env.getClientMap(), &pkt);
1025
1026         Send(&pkt);
1027 }
1028
1029 void Client::deleteAuthData()
1030 {
1031         if (!m_auth_data)
1032                 return;
1033
1034         switch (m_chosen_auth_mech) {
1035                 case AUTH_MECHANISM_FIRST_SRP:
1036                         break;
1037                 case AUTH_MECHANISM_SRP:
1038                 case AUTH_MECHANISM_LEGACY_PASSWORD:
1039                         srp_user_delete((SRPUser *) m_auth_data);
1040                         m_auth_data = NULL;
1041                         break;
1042                 case AUTH_MECHANISM_NONE:
1043                         break;
1044         }
1045         m_chosen_auth_mech = AUTH_MECHANISM_NONE;
1046 }
1047
1048
1049 AuthMechanism Client::choseAuthMech(const u32 mechs)
1050 {
1051         if (mechs & AUTH_MECHANISM_SRP)
1052                 return AUTH_MECHANISM_SRP;
1053
1054         if (mechs & AUTH_MECHANISM_FIRST_SRP)
1055                 return AUTH_MECHANISM_FIRST_SRP;
1056
1057         if (mechs & AUTH_MECHANISM_LEGACY_PASSWORD)
1058                 return AUTH_MECHANISM_LEGACY_PASSWORD;
1059
1060         return AUTH_MECHANISM_NONE;
1061 }
1062
1063 void Client::sendLegacyInit(const char* playerName, const char* playerPassword)
1064 {
1065         NetworkPacket pkt(TOSERVER_INIT_LEGACY,
1066                         1 + PLAYERNAME_SIZE + PASSWORD_SIZE + 2 + 2);
1067
1068         u16 proto_version_min = g_settings->getFlag("send_pre_v25_init") ?
1069                 CLIENT_PROTOCOL_VERSION_MIN_LEGACY : CLIENT_PROTOCOL_VERSION_MIN;
1070
1071         pkt << (u8) SER_FMT_VER_HIGHEST_READ;
1072         pkt.putRawString(playerName,PLAYERNAME_SIZE);
1073         pkt.putRawString(playerPassword, PASSWORD_SIZE);
1074         pkt << (u16) proto_version_min << (u16) CLIENT_PROTOCOL_VERSION_MAX;
1075
1076         Send(&pkt);
1077 }
1078
1079 void Client::sendInit(const std::string &playerName)
1080 {
1081         NetworkPacket pkt(TOSERVER_INIT, 1 + 2 + 2 + (1 + playerName.size()));
1082
1083         // we don't support network compression yet
1084         u16 supp_comp_modes = NETPROTO_COMPRESSION_NONE;
1085
1086         u16 proto_version_min = g_settings->getFlag("send_pre_v25_init") ?
1087                 CLIENT_PROTOCOL_VERSION_MIN_LEGACY : CLIENT_PROTOCOL_VERSION_MIN;
1088
1089         pkt << (u8) SER_FMT_VER_HIGHEST_READ << (u16) supp_comp_modes;
1090         pkt << (u16) proto_version_min << (u16) CLIENT_PROTOCOL_VERSION_MAX;
1091         pkt << playerName;
1092
1093         Send(&pkt);
1094 }
1095
1096 void Client::startAuth(AuthMechanism chosen_auth_mechanism)
1097 {
1098         m_chosen_auth_mech = chosen_auth_mechanism;
1099
1100         switch (chosen_auth_mechanism) {
1101                 case AUTH_MECHANISM_FIRST_SRP: {
1102                         // send srp verifier to server
1103                         std::string verifier;
1104                         std::string salt;
1105                         generate_srp_verifier_and_salt(getPlayerName(), m_password,
1106                                 &verifier, &salt);
1107
1108                         NetworkPacket resp_pkt(TOSERVER_FIRST_SRP, 0);
1109                         resp_pkt << salt << verifier << (u8)((m_password == "") ? 1 : 0);
1110
1111                         Send(&resp_pkt);
1112                         break;
1113                 }
1114                 case AUTH_MECHANISM_SRP:
1115                 case AUTH_MECHANISM_LEGACY_PASSWORD: {
1116                         u8 based_on = 1;
1117
1118                         if (chosen_auth_mechanism == AUTH_MECHANISM_LEGACY_PASSWORD) {
1119                                 m_password = translate_password(getPlayerName(), m_password);
1120                                 based_on = 0;
1121                         }
1122
1123                         std::string playername_u = lowercase(getPlayerName());
1124                         m_auth_data = srp_user_new(SRP_SHA256, SRP_NG_2048,
1125                                 getPlayerName().c_str(), playername_u.c_str(),
1126                                 (const unsigned char *) m_password.c_str(),
1127                                 m_password.length(), NULL, NULL);
1128                         char *bytes_A = 0;
1129                         size_t len_A = 0;
1130                         SRP_Result res = srp_user_start_authentication(
1131                                 (struct SRPUser *) m_auth_data, NULL, NULL, 0,
1132                                 (unsigned char **) &bytes_A, &len_A);
1133                         FATAL_ERROR_IF(res != SRP_OK, "Creating local SRP user failed.");
1134
1135                         NetworkPacket resp_pkt(TOSERVER_SRP_BYTES_A, 0);
1136                         resp_pkt << std::string(bytes_A, len_A) << based_on;
1137                         Send(&resp_pkt);
1138                         break;
1139                 }
1140                 case AUTH_MECHANISM_NONE:
1141                         break; // not handled in this method
1142         }
1143 }
1144
1145 void Client::sendDeletedBlocks(std::vector<v3s16> &blocks)
1146 {
1147         NetworkPacket pkt(TOSERVER_DELETEDBLOCKS, 1 + sizeof(v3s16) * blocks.size());
1148
1149         pkt << (u8) blocks.size();
1150
1151         u32 k = 0;
1152         for(std::vector<v3s16>::iterator
1153                         j = blocks.begin();
1154                         j != blocks.end(); ++j) {
1155                 pkt << *j;
1156                 k++;
1157         }
1158
1159         Send(&pkt);
1160 }
1161
1162 void Client::sendGotBlocks(v3s16 block)
1163 {
1164         NetworkPacket pkt(TOSERVER_GOTBLOCKS, 1 + 6);
1165         pkt << (u8) 1 << block;
1166         Send(&pkt);
1167 }
1168
1169 void Client::sendRemovedSounds(std::vector<s32> &soundList)
1170 {
1171         size_t server_ids = soundList.size();
1172         assert(server_ids <= 0xFFFF);
1173
1174         NetworkPacket pkt(TOSERVER_REMOVED_SOUNDS, 2 + server_ids * 4);
1175
1176         pkt << (u16) (server_ids & 0xFFFF);
1177
1178         for(std::vector<s32>::iterator i = soundList.begin();
1179                         i != soundList.end(); ++i)
1180                 pkt << *i;
1181
1182         Send(&pkt);
1183 }
1184
1185 void Client::sendNodemetaFields(v3s16 p, const std::string &formname,
1186                 const StringMap &fields)
1187 {
1188         size_t fields_size = fields.size();
1189
1190         FATAL_ERROR_IF(fields_size > 0xFFFF, "Unsupported number of nodemeta fields");
1191
1192         NetworkPacket pkt(TOSERVER_NODEMETA_FIELDS, 0);
1193
1194         pkt << p << formname << (u16) (fields_size & 0xFFFF);
1195
1196         StringMap::const_iterator it;
1197         for (it = fields.begin(); it != fields.end(); ++it) {
1198                 const std::string &name = it->first;
1199                 const std::string &value = it->second;
1200                 pkt << name;
1201                 pkt.putLongString(value);
1202         }
1203
1204         Send(&pkt);
1205 }
1206
1207 void Client::sendInventoryFields(const std::string &formname,
1208                 const StringMap &fields)
1209 {
1210         size_t fields_size = fields.size();
1211         FATAL_ERROR_IF(fields_size > 0xFFFF, "Unsupported number of inventory fields");
1212
1213         NetworkPacket pkt(TOSERVER_INVENTORY_FIELDS, 0);
1214         pkt << formname << (u16) (fields_size & 0xFFFF);
1215
1216         StringMap::const_iterator it;
1217         for (it = fields.begin(); it != fields.end(); ++it) {
1218                 const std::string &name  = it->first;
1219                 const std::string &value = it->second;
1220                 pkt << name;
1221                 pkt.putLongString(value);
1222         }
1223
1224         Send(&pkt);
1225 }
1226
1227 void Client::sendInventoryAction(InventoryAction *a)
1228 {
1229         std::ostringstream os(std::ios_base::binary);
1230
1231         a->serialize(os);
1232
1233         // Make data buffer
1234         std::string s = os.str();
1235
1236         NetworkPacket pkt(TOSERVER_INVENTORY_ACTION, s.size());
1237         pkt.putRawString(s.c_str(),s.size());
1238
1239         Send(&pkt);
1240 }
1241
1242 void Client::sendChatMessage(const std::wstring &message)
1243 {
1244         NetworkPacket pkt(TOSERVER_CHAT_MESSAGE, 2 + message.size() * sizeof(u16));
1245
1246         pkt << message;
1247
1248         Send(&pkt);
1249 }
1250
1251 void Client::sendChangePassword(const std::string &oldpassword,
1252         const std::string &newpassword)
1253 {
1254         LocalPlayer *player = m_env.getLocalPlayer();
1255         if (player == NULL)
1256                 return;
1257
1258         std::string playername = player->getName();
1259         if (m_proto_ver >= 25) {
1260                 // get into sudo mode and then send new password to server
1261                 m_password = oldpassword;
1262                 m_new_password = newpassword;
1263                 startAuth(choseAuthMech(m_sudo_auth_methods));
1264         } else {
1265                 std::string oldpwd = translate_password(playername, oldpassword);
1266                 std::string newpwd = translate_password(playername, newpassword);
1267
1268                 NetworkPacket pkt(TOSERVER_PASSWORD_LEGACY, 2 * PASSWORD_SIZE);
1269
1270                 for (u8 i = 0; i < PASSWORD_SIZE; i++) {
1271                         pkt << (u8) (i < oldpwd.length() ? oldpwd[i] : 0);
1272                 }
1273
1274                 for (u8 i = 0; i < PASSWORD_SIZE; i++) {
1275                         pkt << (u8) (i < newpwd.length() ? newpwd[i] : 0);
1276                 }
1277                 Send(&pkt);
1278         }
1279 }
1280
1281
1282 void Client::sendDamage(u8 damage)
1283 {
1284         DSTACK(FUNCTION_NAME);
1285
1286         NetworkPacket pkt(TOSERVER_DAMAGE, sizeof(u8));
1287         pkt << damage;
1288         Send(&pkt);
1289 }
1290
1291 void Client::sendBreath(u16 breath)
1292 {
1293         DSTACK(FUNCTION_NAME);
1294
1295         // Protocol v29 make this obsolete
1296         if (m_proto_ver >= 29)
1297                 return;
1298
1299         NetworkPacket pkt(TOSERVER_BREATH, sizeof(u16));
1300         pkt << breath;
1301         Send(&pkt);
1302 }
1303
1304 void Client::sendRespawn()
1305 {
1306         DSTACK(FUNCTION_NAME);
1307
1308         NetworkPacket pkt(TOSERVER_RESPAWN, 0);
1309         Send(&pkt);
1310 }
1311
1312 void Client::sendReady()
1313 {
1314         DSTACK(FUNCTION_NAME);
1315
1316         NetworkPacket pkt(TOSERVER_CLIENT_READY,
1317                         1 + 1 + 1 + 1 + 2 + sizeof(char) * strlen(g_version_hash));
1318
1319         pkt << (u8) VERSION_MAJOR << (u8) VERSION_MINOR << (u8) VERSION_PATCH
1320                 << (u8) 0 << (u16) strlen(g_version_hash);
1321
1322         pkt.putRawString(g_version_hash, (u16) strlen(g_version_hash));
1323         Send(&pkt);
1324 }
1325
1326 void Client::sendPlayerPos()
1327 {
1328         LocalPlayer *myplayer = m_env.getLocalPlayer();
1329         if(myplayer == NULL)
1330                 return;
1331
1332         ClientMap &map = m_env.getClientMap();
1333
1334         u8 camera_fov    = map.getCameraFov();
1335         u8 wanted_range  = map.getControl().wanted_range;
1336
1337         // Save bandwidth by only updating position when something changed
1338         if(myplayer->last_position        == myplayer->getPosition() &&
1339                         myplayer->last_speed        == myplayer->getSpeed()    &&
1340                         myplayer->last_pitch        == myplayer->getPitch()    &&
1341                         myplayer->last_yaw          == myplayer->getYaw()      &&
1342                         myplayer->last_keyPressed   == myplayer->keyPressed    &&
1343                         myplayer->last_camera_fov   == camera_fov              &&
1344                         myplayer->last_wanted_range == wanted_range)
1345                 return;
1346
1347         myplayer->last_position     = myplayer->getPosition();
1348         myplayer->last_speed        = myplayer->getSpeed();
1349         myplayer->last_pitch        = myplayer->getPitch();
1350         myplayer->last_yaw          = myplayer->getYaw();
1351         myplayer->last_keyPressed   = myplayer->keyPressed;
1352         myplayer->last_camera_fov   = camera_fov;
1353         myplayer->last_wanted_range = wanted_range;
1354
1355         //infostream << "Sending Player Position information" << std::endl;
1356
1357         u16 our_peer_id;
1358         {
1359                 //MutexAutoLock lock(m_con_mutex); //bulk comment-out
1360                 our_peer_id = m_con.GetPeerID();
1361         }
1362
1363         // Set peer id if not set already
1364         if(myplayer->peer_id == PEER_ID_INEXISTENT)
1365                 myplayer->peer_id = our_peer_id;
1366
1367         assert(myplayer->peer_id == our_peer_id);
1368
1369         NetworkPacket pkt(TOSERVER_PLAYERPOS, 12 + 12 + 4 + 4 + 4 + 1 + 1);
1370
1371         writePlayerPos(myplayer, &map, &pkt);
1372
1373         Send(&pkt);
1374 }
1375
1376 void Client::sendPlayerItem(u16 item)
1377 {
1378         LocalPlayer *myplayer = m_env.getLocalPlayer();
1379         if(myplayer == NULL)
1380                 return;
1381
1382         u16 our_peer_id = m_con.GetPeerID();
1383
1384         // Set peer id if not set already
1385         if(myplayer->peer_id == PEER_ID_INEXISTENT)
1386                 myplayer->peer_id = our_peer_id;
1387         assert(myplayer->peer_id == our_peer_id);
1388
1389         NetworkPacket pkt(TOSERVER_PLAYERITEM, 2);
1390
1391         pkt << item;
1392
1393         Send(&pkt);
1394 }
1395
1396 void Client::removeNode(v3s16 p)
1397 {
1398         std::map<v3s16, MapBlock*> modified_blocks;
1399
1400         try {
1401                 m_env.getMap().removeNodeAndUpdate(p, modified_blocks);
1402         }
1403         catch(InvalidPositionException &e) {
1404         }
1405
1406         for(std::map<v3s16, MapBlock *>::iterator
1407                         i = modified_blocks.begin();
1408                         i != modified_blocks.end(); ++i) {
1409                 addUpdateMeshTaskWithEdge(i->first, false, true);
1410         }
1411 }
1412
1413 void Client::addNode(v3s16 p, MapNode n, bool remove_metadata)
1414 {
1415         //TimeTaker timer1("Client::addNode()");
1416
1417         std::map<v3s16, MapBlock*> modified_blocks;
1418
1419         try {
1420                 //TimeTaker timer3("Client::addNode(): addNodeAndUpdate");
1421                 m_env.getMap().addNodeAndUpdate(p, n, modified_blocks, remove_metadata);
1422         }
1423         catch(InvalidPositionException &e) {
1424         }
1425
1426         for(std::map<v3s16, MapBlock *>::iterator
1427                         i = modified_blocks.begin();
1428                         i != modified_blocks.end(); ++i) {
1429                 addUpdateMeshTaskWithEdge(i->first, false, true);
1430         }
1431 }
1432
1433 void Client::setPlayerControl(PlayerControl &control)
1434 {
1435         LocalPlayer *player = m_env.getLocalPlayer();
1436         assert(player != NULL);
1437         player->control = control;
1438 }
1439
1440 void Client::selectPlayerItem(u16 item)
1441 {
1442         m_playeritem = item;
1443         m_inventory_updated = true;
1444         sendPlayerItem(item);
1445 }
1446
1447 // Returns true if the inventory of the local player has been
1448 // updated from the server. If it is true, it is set to false.
1449 bool Client::getLocalInventoryUpdated()
1450 {
1451         bool updated = m_inventory_updated;
1452         m_inventory_updated = false;
1453         return updated;
1454 }
1455
1456 // Copies the inventory of the local player to parameter
1457 void Client::getLocalInventory(Inventory &dst)
1458 {
1459         LocalPlayer *player = m_env.getLocalPlayer();
1460         assert(player != NULL);
1461         dst = player->inventory;
1462 }
1463
1464 Inventory* Client::getInventory(const InventoryLocation &loc)
1465 {
1466         switch(loc.type){
1467         case InventoryLocation::UNDEFINED:
1468         {}
1469         break;
1470         case InventoryLocation::CURRENT_PLAYER:
1471         {
1472                 LocalPlayer *player = m_env.getLocalPlayer();
1473                 assert(player != NULL);
1474                 return &player->inventory;
1475         }
1476         break;
1477         case InventoryLocation::PLAYER:
1478         {
1479                 // Check if we are working with local player inventory
1480                 LocalPlayer *player = m_env.getLocalPlayer();
1481                 if (!player || strcmp(player->getName(), loc.name.c_str()) != 0)
1482                         return NULL;
1483                 return &player->inventory;
1484         }
1485         break;
1486         case InventoryLocation::NODEMETA:
1487         {
1488                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(loc.p);
1489                 if(!meta)
1490                         return NULL;
1491                 return meta->getInventory();
1492         }
1493         break;
1494         case InventoryLocation::DETACHED:
1495         {
1496                 if (m_detached_inventories.count(loc.name) == 0)
1497                         return NULL;
1498                 return m_detached_inventories[loc.name];
1499         }
1500         break;
1501         default:
1502                 FATAL_ERROR("Invalid inventory location type.");
1503                 break;
1504         }
1505         return NULL;
1506 }
1507
1508 void Client::inventoryAction(InventoryAction *a)
1509 {
1510         /*
1511                 Send it to the server
1512         */
1513         sendInventoryAction(a);
1514
1515         /*
1516                 Predict some local inventory changes
1517         */
1518         a->clientApply(this, this);
1519
1520         // Remove it
1521         delete a;
1522 }
1523
1524 float Client::getAnimationTime()
1525 {
1526         return m_animation_time;
1527 }
1528
1529 int Client::getCrackLevel()
1530 {
1531         return m_crack_level;
1532 }
1533
1534 void Client::setCrack(int level, v3s16 pos)
1535 {
1536         int old_crack_level = m_crack_level;
1537         v3s16 old_crack_pos = m_crack_pos;
1538
1539         m_crack_level = level;
1540         m_crack_pos = pos;
1541
1542         if(old_crack_level >= 0 && (level < 0 || pos != old_crack_pos))
1543         {
1544                 // remove old crack
1545                 addUpdateMeshTaskForNode(old_crack_pos, false, true);
1546         }
1547         if(level >= 0 && (old_crack_level < 0 || pos != old_crack_pos))
1548         {
1549                 // add new crack
1550                 addUpdateMeshTaskForNode(pos, false, true);
1551         }
1552 }
1553
1554 u16 Client::getHP()
1555 {
1556         LocalPlayer *player = m_env.getLocalPlayer();
1557         assert(player != NULL);
1558         return player->hp;
1559 }
1560
1561 bool Client::getChatMessage(std::wstring &message)
1562 {
1563         if(m_chat_queue.size() == 0)
1564                 return false;
1565         message = m_chat_queue.front();
1566         m_chat_queue.pop();
1567         return true;
1568 }
1569
1570 void Client::typeChatMessage(const std::wstring &message)
1571 {
1572         // Discard empty line
1573         if(message == L"")
1574                 return;
1575
1576         // If message was ate by script API, don't send it to server
1577         if (m_script->on_sending_message(wide_to_utf8(message))) {
1578                 return;
1579         }
1580
1581         // Send to others
1582         sendChatMessage(message);
1583
1584         // Show locally
1585         if (message[0] == L'/')
1586         {
1587                 m_chat_queue.push((std::wstring)L"issued command: " + message);
1588         }
1589         else
1590         {
1591                 // compatibility code
1592                 if (m_proto_ver < 29) {
1593                         LocalPlayer *player = m_env.getLocalPlayer();
1594                         assert(player != NULL);
1595                         std::wstring name = narrow_to_wide(player->getName());
1596                         m_chat_queue.push((std::wstring)L"<" + name + L"> " + message);
1597                 }
1598         }
1599 }
1600
1601 void Client::addUpdateMeshTask(v3s16 p, bool ack_to_server, bool urgent)
1602 {
1603         MapBlock *b = m_env.getMap().getBlockNoCreateNoEx(p);
1604         if(b == NULL)
1605                 return;
1606
1607         /*
1608                 Create a task to update the mesh of the block
1609         */
1610
1611         MeshMakeData *data = new MeshMakeData(this, m_cache_enable_shaders,
1612                 m_cache_use_tangent_vertices);
1613
1614         {
1615                 //TimeTaker timer("data fill");
1616                 // Release: ~0ms
1617                 // Debug: 1-6ms, avg=2ms
1618                 data->fill(b);
1619                 data->setCrack(m_crack_level, m_crack_pos);
1620                 data->setSmoothLighting(m_cache_smooth_lighting);
1621         }
1622
1623         // Add task to queue
1624         m_mesh_update_thread.enqueueUpdate(p, data, ack_to_server, urgent);
1625 }
1626
1627 void Client::addUpdateMeshTaskWithEdge(v3s16 blockpos, bool ack_to_server, bool urgent)
1628 {
1629         try{
1630                 addUpdateMeshTask(blockpos, ack_to_server, urgent);
1631         }
1632         catch(InvalidPositionException &e){}
1633
1634         // Leading edge
1635         for (int i=0;i<6;i++)
1636         {
1637                 try{
1638                         v3s16 p = blockpos + g_6dirs[i];
1639                         addUpdateMeshTask(p, false, urgent);
1640                 }
1641                 catch(InvalidPositionException &e){}
1642         }
1643 }
1644
1645 void Client::addUpdateMeshTaskForNode(v3s16 nodepos, bool ack_to_server, bool urgent)
1646 {
1647         {
1648                 v3s16 p = nodepos;
1649                 infostream<<"Client::addUpdateMeshTaskForNode(): "
1650                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
1651                                 <<std::endl;
1652         }
1653
1654         v3s16 blockpos          = getNodeBlockPos(nodepos);
1655         v3s16 blockpos_relative = blockpos * MAP_BLOCKSIZE;
1656
1657         try{
1658                 addUpdateMeshTask(blockpos, ack_to_server, urgent);
1659         }
1660         catch(InvalidPositionException &e) {}
1661
1662         // Leading edge
1663         if(nodepos.X == blockpos_relative.X){
1664                 try{
1665                         v3s16 p = blockpos + v3s16(-1,0,0);
1666                         addUpdateMeshTask(p, false, urgent);
1667                 }
1668                 catch(InvalidPositionException &e){}
1669         }
1670
1671         if(nodepos.Y == blockpos_relative.Y){
1672                 try{
1673                         v3s16 p = blockpos + v3s16(0,-1,0);
1674                         addUpdateMeshTask(p, false, urgent);
1675                 }
1676                 catch(InvalidPositionException &e){}
1677         }
1678
1679         if(nodepos.Z == blockpos_relative.Z){
1680                 try{
1681                         v3s16 p = blockpos + v3s16(0,0,-1);
1682                         addUpdateMeshTask(p, false, urgent);
1683                 }
1684                 catch(InvalidPositionException &e){}
1685         }
1686 }
1687
1688 ClientEvent Client::getClientEvent()
1689 {
1690         ClientEvent event;
1691         if (m_client_event_queue.empty()) {
1692                 event.type = CE_NONE;
1693         }
1694         else {
1695                 event = m_client_event_queue.front();
1696                 m_client_event_queue.pop();
1697         }
1698         return event;
1699 }
1700
1701 float Client::mediaReceiveProgress()
1702 {
1703         if (m_media_downloader)
1704                 return m_media_downloader->getProgress();
1705         else
1706                 return 1.0; // downloader only exists when not yet done
1707 }
1708
1709 typedef struct TextureUpdateArgs {
1710         IrrlichtDevice *device;
1711         gui::IGUIEnvironment *guienv;
1712         u32 last_time_ms;
1713         u16 last_percent;
1714         const wchar_t* text_base;
1715 } TextureUpdateArgs;
1716
1717 void texture_update_progress(void *args, u32 progress, u32 max_progress)
1718 {
1719                 TextureUpdateArgs* targs = (TextureUpdateArgs*) args;
1720                 u16 cur_percent = ceil(progress / (double) max_progress * 100.);
1721
1722                 // update the loading menu -- if neccessary
1723                 bool do_draw = false;
1724                 u32 time_ms = targs->last_time_ms;
1725                 if (cur_percent != targs->last_percent) {
1726                         targs->last_percent = cur_percent;
1727                         time_ms = getTimeMs();
1728                         // only draw when the user will notice something:
1729                         do_draw = (time_ms - targs->last_time_ms > 100);
1730                 }
1731
1732                 if (do_draw) {
1733                         targs->last_time_ms = time_ms;
1734                         std::basic_stringstream<wchar_t> strm;
1735                         strm << targs->text_base << " " << targs->last_percent << "%...";
1736                         draw_load_screen(strm.str(), targs->device, targs->guienv, 0,
1737                                 72 + (u16) ((18. / 100.) * (double) targs->last_percent));
1738                 }
1739 }
1740
1741 void Client::afterContentReceived(IrrlichtDevice *device)
1742 {
1743         infostream<<"Client::afterContentReceived() started"<<std::endl;
1744         assert(m_itemdef_received); // pre-condition
1745         assert(m_nodedef_received); // pre-condition
1746         assert(mediaReceived()); // pre-condition
1747
1748         const wchar_t* text = wgettext("Loading textures...");
1749
1750         // Clear cached pre-scaled 2D GUI images, as this cache
1751         // might have images with the same name but different
1752         // content from previous sessions.
1753         guiScalingCacheClear(device->getVideoDriver());
1754
1755         // Rebuild inherited images and recreate textures
1756         infostream<<"- Rebuilding images and textures"<<std::endl;
1757         draw_load_screen(text,device, guienv, 0, 70);
1758         m_tsrc->rebuildImagesAndTextures();
1759         delete[] text;
1760
1761         // Rebuild shaders
1762         infostream<<"- Rebuilding shaders"<<std::endl;
1763         text = wgettext("Rebuilding shaders...");
1764         draw_load_screen(text, device, guienv, 0, 71);
1765         m_shsrc->rebuildShaders();
1766         delete[] text;
1767
1768         // Update node aliases
1769         infostream<<"- Updating node aliases"<<std::endl;
1770         text = wgettext("Initializing nodes...");
1771         draw_load_screen(text, device, guienv, 0, 72);
1772         m_nodedef->updateAliases(m_itemdef);
1773         std::string texture_path = g_settings->get("texture_path");
1774         if (texture_path != "" && fs::IsDir(texture_path))
1775                 m_nodedef->applyTextureOverrides(texture_path + DIR_DELIM + "override.txt");
1776         m_nodedef->setNodeRegistrationStatus(true);
1777         m_nodedef->runNodeResolveCallbacks();
1778         delete[] text;
1779
1780         // Update node textures and assign shaders to each tile
1781         infostream<<"- Updating node textures"<<std::endl;
1782         TextureUpdateArgs tu_args;
1783         tu_args.device = device;
1784         tu_args.guienv = guienv;
1785         tu_args.last_time_ms = getTimeMs();
1786         tu_args.last_percent = 0;
1787         tu_args.text_base =  wgettext("Initializing nodes");
1788         m_nodedef->updateTextures(this, texture_update_progress, &tu_args);
1789         delete[] tu_args.text_base;
1790
1791         // Start mesh update thread after setting up content definitions
1792         infostream<<"- Starting mesh update thread"<<std::endl;
1793         m_mesh_update_thread.start();
1794
1795         m_state = LC_Ready;
1796         sendReady();
1797         text = wgettext("Done!");
1798         draw_load_screen(text, device, guienv, 0, 100);
1799         infostream<<"Client::afterContentReceived() done"<<std::endl;
1800         delete[] text;
1801 }
1802
1803 float Client::getRTT(void)
1804 {
1805         return m_con.getPeerStat(PEER_ID_SERVER,con::AVG_RTT);
1806 }
1807
1808 float Client::getCurRate(void)
1809 {
1810         return ( m_con.getLocalStat(con::CUR_INC_RATE) +
1811                         m_con.getLocalStat(con::CUR_DL_RATE));
1812 }
1813
1814 float Client::getAvgRate(void)
1815 {
1816         return ( m_con.getLocalStat(con::AVG_INC_RATE) +
1817                         m_con.getLocalStat(con::AVG_DL_RATE));
1818 }
1819
1820 void Client::makeScreenshot(IrrlichtDevice *device)
1821 {
1822         irr::video::IVideoDriver *driver = device->getVideoDriver();
1823         irr::video::IImage* const raw_image = driver->createScreenShot();
1824
1825         if (!raw_image)
1826                 return;
1827
1828         time_t t = time(NULL);
1829         struct tm *tm = localtime(&t);
1830
1831         char timetstamp_c[64];
1832         strftime(timetstamp_c, sizeof(timetstamp_c), "%Y%m%d_%H%M%S", tm);
1833
1834         std::string filename_base = g_settings->get("screenshot_path")
1835                         + DIR_DELIM
1836                         + std::string("screenshot_")
1837                         + std::string(timetstamp_c);
1838         std::string filename_ext = "." + g_settings->get("screenshot_format");
1839         std::string filename;
1840
1841         u32 quality = (u32)g_settings->getS32("screenshot_quality");
1842         quality = MYMIN(MYMAX(quality, 0), 100) / 100.0 * 255;
1843
1844         // Try to find a unique filename
1845         unsigned serial = 0;
1846
1847         while (serial < SCREENSHOT_MAX_SERIAL_TRIES) {
1848                 filename = filename_base + (serial > 0 ? ("_" + itos(serial)) : "") + filename_ext;
1849                 std::ifstream tmp(filename.c_str());
1850                 if (!tmp.good())
1851                         break;  // File did not apparently exist, we'll go with it
1852                 serial++;
1853         }
1854
1855         if (serial == SCREENSHOT_MAX_SERIAL_TRIES) {
1856                 infostream << "Could not find suitable filename for screenshot" << std::endl;
1857         } else {
1858                 irr::video::IImage* const image =
1859                                 driver->createImage(video::ECF_R8G8B8, raw_image->getDimension());
1860
1861                 if (image) {
1862                         raw_image->copyTo(image);
1863
1864                         std::ostringstream sstr;
1865                         if (driver->writeImageToFile(image, filename.c_str(), quality)) {
1866                                 sstr << "Saved screenshot to '" << filename << "'";
1867                         } else {
1868                                 sstr << "Failed to save screenshot '" << filename << "'";
1869                         }
1870                         m_chat_queue.push(narrow_to_wide(sstr.str()));
1871                         infostream << sstr.str() << std::endl;
1872                         image->drop();
1873                 }
1874         }
1875
1876         raw_image->drop();
1877 }
1878
1879 // IGameDef interface
1880 // Under envlock
1881 IItemDefManager* Client::getItemDefManager()
1882 {
1883         return m_itemdef;
1884 }
1885 INodeDefManager* Client::getNodeDefManager()
1886 {
1887         return m_nodedef;
1888 }
1889 ICraftDefManager* Client::getCraftDefManager()
1890 {
1891         return NULL;
1892         //return m_craftdef;
1893 }
1894 ITextureSource* Client::getTextureSource()
1895 {
1896         return m_tsrc;
1897 }
1898 IShaderSource* Client::getShaderSource()
1899 {
1900         return m_shsrc;
1901 }
1902 scene::ISceneManager* Client::getSceneManager()
1903 {
1904         return m_device->getSceneManager();
1905 }
1906 u16 Client::allocateUnknownNodeId(const std::string &name)
1907 {
1908         errorstream << "Client::allocateUnknownNodeId(): "
1909                         << "Client cannot allocate node IDs" << std::endl;
1910         FATAL_ERROR("Client allocated unknown node");
1911
1912         return CONTENT_IGNORE;
1913 }
1914 ISoundManager* Client::getSoundManager()
1915 {
1916         return m_sound;
1917 }
1918 MtEventManager* Client::getEventManager()
1919 {
1920         return m_event;
1921 }
1922
1923 ParticleManager* Client::getParticleManager()
1924 {
1925         return &m_particle_manager;
1926 }
1927
1928 scene::IAnimatedMesh* Client::getMesh(const std::string &filename)
1929 {
1930         StringMap::const_iterator it = m_mesh_data.find(filename);
1931         if (it == m_mesh_data.end()) {
1932                 errorstream << "Client::getMesh(): Mesh not found: \"" << filename
1933                         << "\"" << std::endl;
1934                 return NULL;
1935         }
1936         const std::string &data    = it->second;
1937         scene::ISceneManager *smgr = m_device->getSceneManager();
1938
1939         // Create the mesh, remove it from cache and return it
1940         // This allows unique vertex colors and other properties for each instance
1941         Buffer<char> data_rw(data.c_str(), data.size()); // Const-incorrect Irrlicht
1942         io::IFileSystem *irrfs = m_device->getFileSystem();
1943         io::IReadFile *rfile   = irrfs->createMemoryReadFile(
1944                         *data_rw, data_rw.getSize(), filename.c_str());
1945         FATAL_ERROR_IF(!rfile, "Could not create/open RAM file");
1946
1947         scene::IAnimatedMesh *mesh = smgr->getMesh(rfile);
1948         rfile->drop();
1949         // NOTE: By playing with Irrlicht refcounts, maybe we could cache a bunch
1950         // of uniquely named instances and re-use them
1951         mesh->grab();
1952         smgr->getMeshCache()->removeMesh(mesh);
1953         return mesh;
1954 }