src/client.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010 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 General Public License as published by
   7 the Free Software Foundation; either version 2 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 General Public License for more details.
  14
  15 You should have received a copy of the GNU 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 "client.h"
  21 #include "utility.h"
  22 #include <iostream>
  23 #include "clientserver.h"
  24 #include "jmutexautolock.h"
  25 #include "main.h"
  26 #include <sstream>
  27 #include "porting.h"
  28
  29 void * ClientUpdateThread::Thread()
  30 {
  31         ThreadStarted();
  32
  33         DSTACK(__FUNCTION_NAME);
  34
  35         BEGIN_DEBUG_EXCEPTION_HANDLER
  36
  37         while(getRun())
  38         {
  39                 m_client->asyncStep();
  40
  41                 //m_client->updateSomeExpiredMeshes();
  42
  43                 bool was = m_client->AsyncProcessData();
  44
  45                 if(was == false)
  46                         sleep_ms(10);
  47         }
  48
  49         END_DEBUG_EXCEPTION_HANDLER
  50
  51         return NULL;
  52 }
  53
  54 Client::Client(
  55                 IrrlichtDevice *device,
  56                 const char *playername,
  57                 MapDrawControl &control):
  58         m_thread(this),
  59         m_env(
  60                 new ClientMap(this, control,
  61                         device->getSceneManager()->getRootSceneNode(),
  62                         device->getSceneManager(), 666),
  63                 device->getSceneManager()
  64         ),
  65         m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
  66         m_device(device),
  67         camera_position(0,0,0),
  68         camera_direction(0,0,1),
  69         m_server_ser_ver(SER_FMT_VER_INVALID),
  70         m_step_dtime(0.0),
  71         m_inventory_updated(false),
  72         m_time_of_day(0)
  73 {
  74         m_packetcounter_timer = 0.0;
  75         m_delete_unused_sectors_timer = 0.0;
  76         m_connection_reinit_timer = 0.0;
  77         m_avg_rtt_timer = 0.0;
  78         m_playerpos_send_timer = 0.0;
  79
  80         //m_fetchblock_mutex.Init();
  81         m_incoming_queue_mutex.Init();
  82         m_env_mutex.Init();
  83         m_con_mutex.Init();
  84         m_step_dtime_mutex.Init();
  85
  86         m_thread.Start();
  87
  88         /*
  89                 Add local player
  90         */
  91         {
  92                 JMutexAutoLock envlock(m_env_mutex);
  93
  94                 Player *player = new LocalPlayer();
  95
  96                 player->updateName(playername);
  97
  98                 m_env.addPlayer(player);
  99         }
 100
 101         // Add some active objects for testing
 102         /*{
 103                 ClientActiveObject *obj = new TestCAO(0, v3f(0, 10*BS, 0));
 104                 m_env.addActiveObject(obj);
 105         }*/
 106 }
 107
 108 Client::~Client()
 109 {
 110         {
 111                 JMutexAutoLock conlock(m_con_mutex);
 112                 m_con.Disconnect();
 113         }
 114
 115         m_thread.setRun(false);
 116         while(m_thread.IsRunning())
 117                 sleep_ms(100);
 118 }
 119
 120 void Client::connect(Address address)
 121 {
 122         DSTACK(__FUNCTION_NAME);
 123         JMutexAutoLock lock(m_con_mutex);
 124         m_con.setTimeoutMs(0);
 125         m_con.Connect(address);
 126 }
 127
 128 bool Client::connectedAndInitialized()
 129 {
 130         JMutexAutoLock lock(m_con_mutex);
 131
 132         if(m_con.Connected() == false)
 133                 return false;
 134
 135         if(m_server_ser_ver == SER_FMT_VER_INVALID)
 136                 return false;
 137
 138         return true;
 139 }
 140
 141 void Client::step(float dtime)
 142 {
 143         DSTACK(__FUNCTION_NAME);
 144
 145         // Limit a bit
 146         if(dtime > 2.0)
 147                 dtime = 2.0;
 148
 149
 150         //dstream<<"Client steps "<<dtime<<std::endl;
 151
 152         {
 153                 //TimeTaker timer("ReceiveAll()", m_device);
 154                 // 0ms
 155                 ReceiveAll();
 156         }
 157
 158         {
 159                 //TimeTaker timer("m_con_mutex + m_con.RunTimeouts()", m_device);
 160                 // 0ms
 161                 JMutexAutoLock lock(m_con_mutex);
 162                 m_con.RunTimeouts(dtime);
 163         }
 164
 165         /*
 166                 Packet counter
 167         */
 168         {
 169                 float &counter = m_packetcounter_timer;
 170                 counter -= dtime;
 171                 if(counter <= 0.0)
 172                 {
 173                         counter = 20.0;
 174
 175                         dout_client<<"Client packetcounter (20s):"<<std::endl;
 176                         m_packetcounter.print(dout_client);
 177                         m_packetcounter.clear();
 178                 }
 179         }
 180
 181         {
 182                 /*
 183                         Delete unused sectors
 184
 185                         NOTE: This jams the game for a while because deleting sectors
 186                               clear caches
 187                 */
 188
 189                 float &counter = m_delete_unused_sectors_timer;
 190                 counter -= dtime;
 191                 if(counter <= 0.0)
 192                 {
 193                         // 3 minute interval
 194                         //counter = 180.0;
 195                         counter = 60.0;
 196
 197                         JMutexAutoLock lock(m_env_mutex);
 198
 199                         core::list<v3s16> deleted_blocks;
 200
 201                         float delete_unused_sectors_timeout =
 202                                 g_settings.getFloat("client_delete_unused_sectors_timeout");
 203
 204                         // Delete sector blocks
 205                         /*u32 num = m_env.getMap().deleteUnusedSectors
 206                                         (delete_unused_sectors_timeout,
 207                                         true, &deleted_blocks);*/
 208
 209                         // Delete whole sectors
 210                         u32 num = m_env.getMap().deleteUnusedSectors
 211                                         (delete_unused_sectors_timeout,
 212                                         false, &deleted_blocks);
 213
 214                         if(num > 0)
 215                         {
 216                                 /*dstream<<DTIME<<"Client: Deleted blocks of "<<num
 217                                                 <<" unused sectors"<<std::endl;*/
 218                                 dstream<<DTIME<<"Client: Deleted "<<num
 219                                                 <<" unused sectors"<<std::endl;
 220
 221                                 /*
 222                                         Send info to server
 223                                 */
 224
 225                                 // Env is locked so con can be locked.
 226                                 JMutexAutoLock lock(m_con_mutex);
 227
 228                                 core::list<v3s16>::Iterator i = deleted_blocks.begin();
 229                                 core::list<v3s16> sendlist;
 230                                 for(;;)
 231                                 {
 232                                         if(sendlist.size() == 255 || i == deleted_blocks.end())
 233                                         {
 234                                                 if(sendlist.size() == 0)
 235                                                         break;
 236                                                 /*
 237                                                         [0] u16 command
 238                                                         [2] u8 count
 239                                                         [3] v3s16 pos_0
 240                                                         [3+6] v3s16 pos_1
 241                                                         ...
 242                                                 */
 243                                                 u32 replysize = 2+1+6*sendlist.size();
 244                                                 SharedBuffer<u8> reply(replysize);
 245                                                 writeU16(&reply[0], TOSERVER_DELETEDBLOCKS);
 246                                                 reply[2] = sendlist.size();
 247                                                 u32 k = 0;
 248                                                 for(core::list<v3s16>::Iterator
 249                                                                 j = sendlist.begin();
 250                                                                 j != sendlist.end(); j++)
 251                                                 {
 252                                                         writeV3S16(&reply[2+1+6*k], *j);
 253                                                         k++;
 254                                                 }
 255                                                 m_con.Send(PEER_ID_SERVER, 1, reply, true);
 256
 257                                                 if(i == deleted_blocks.end())
 258                                                         break;
 259
 260                                                 sendlist.clear();
 261                                         }
 262
 263                                         sendlist.push_back(*i);
 264                                         i++;
 265                                 }
 266                         }
 267                 }
 268         }
 269
 270         bool connected = connectedAndInitialized();
 271
 272         if(connected == false)
 273         {
 274                 float &counter = m_connection_reinit_timer;
 275                 counter -= dtime;
 276                 if(counter <= 0.0)
 277                 {
 278                         counter = 2.0;
 279
 280                         JMutexAutoLock envlock(m_env_mutex);
 281
 282                         Player *myplayer = m_env.getLocalPlayer();
 283                         assert(myplayer != NULL);
 284
 285                         // Send TOSERVER_INIT
 286                         // [0] u16 TOSERVER_INIT
 287                         // [2] u8 SER_FMT_VER_HIGHEST
 288                         // [3] u8[20] player_name
 289                         SharedBuffer<u8> data(2+1+PLAYERNAME_SIZE);
 290                         writeU16(&data[0], TOSERVER_INIT);
 291                         writeU8(&data[2], SER_FMT_VER_HIGHEST);
 292                         memset((char*)&data[3], 0, PLAYERNAME_SIZE);
 293                         snprintf((char*)&data[3], PLAYERNAME_SIZE, "%s", myplayer->getName());
 294                         // Send as unreliable
 295                         Send(0, data, false);
 296                 }
 297
 298                 // Not connected, return
 299                 return;
 300         }
 301
 302         /*
 303                 Do stuff if connected
 304         */
 305
 306         {
 307                 // 0ms
 308                 JMutexAutoLock lock(m_env_mutex);
 309
 310                 // Control local player (0ms)
 311                 LocalPlayer *player = m_env.getLocalPlayer();
 312                 assert(player != NULL);
 313                 player->applyControl(dtime);
 314
 315                 //TimeTaker envtimer("env step", m_device);
 316                 // Step environment
 317                 m_env.step(dtime);
 318
 319                 // Step active blocks
 320                 for(core::map<v3s16, bool>::Iterator
 321                                 i = m_active_blocks.getIterator();
 322                                 i.atEnd() == false; i++)
 323                 {
 324                         v3s16 p = i.getNode()->getKey();
 325
 326                         MapBlock *block = NULL;
 327                         try
 328                         {
 329                                 block = m_env.getMap().getBlockNoCreate(p);
 330                                 block->stepObjects(dtime, false, m_env.getDayNightRatio());
 331                         }
 332                         catch(InvalidPositionException &e)
 333                         {
 334                         }
 335                 }
 336         }
 337
 338         {
 339                 float &counter = m_avg_rtt_timer;
 340                 counter += dtime;
 341                 if(counter >= 10)
 342                 {
 343                         counter = 0.0;
 344                         JMutexAutoLock lock(m_con_mutex);
 345                         // connectedAndInitialized() is true, peer exists.
 346                         con::Peer *peer = m_con.GetPeer(PEER_ID_SERVER);
 347                         dstream<<DTIME<<"Client: avg_rtt="<<peer->avg_rtt<<std::endl;
 348                 }
 349         }
 350         {
 351                 float &counter = m_playerpos_send_timer;
 352                 counter += dtime;
 353                 if(counter >= 0.2)
 354                 {
 355                         counter = 0.0;
 356                         sendPlayerPos();
 357                 }
 358         }
 359
 360         /*{
 361                 JMutexAutoLock lock(m_step_dtime_mutex);
 362                 m_step_dtime += dtime;
 363         }*/
 364 }
 365
 366 float Client::asyncStep()
 367 {
 368         DSTACK(__FUNCTION_NAME);
 369         //dstream<<"Client::asyncStep()"<<std::endl;
 370
 371         /*float dtime;
 372         {
 373                 JMutexAutoLock lock1(m_step_dtime_mutex);
 374                 if(m_step_dtime < 0.001)
 375                         return 0.0;
 376                 dtime = m_step_dtime;
 377                 m_step_dtime = 0.0;
 378         }
 379
 380         return dtime;*/
 381         return 0.0;
 382 }
 383
 384 // Virtual methods from con::PeerHandler
 385 void Client::peerAdded(con::Peer *peer)
 386 {
 387         derr_client<<"Client::peerAdded(): peer->id="
 388                         <<peer->id<<std::endl;
 389 }
 390 void Client::deletingPeer(con::Peer *peer, bool timeout)
 391 {
 392         derr_client<<"Client::deletingPeer(): "
 393                         "Server Peer is getting deleted "
 394                         <<"(timeout="<<timeout<<")"<<std::endl;
 395 }
 396
 397 void Client::ReceiveAll()
 398 {
 399         DSTACK(__FUNCTION_NAME);
 400         for(;;)
 401         {
 402                 try{
 403                         Receive();
 404                 }
 405                 catch(con::NoIncomingDataException &e)
 406                 {
 407                         break;
 408                 }
 409                 catch(con::InvalidIncomingDataException &e)
 410                 {
 411                         dout_client<<DTIME<<"Client::ReceiveAll(): "
 412                                         "InvalidIncomingDataException: what()="
 413                                         <<e.what()<<std::endl;
 414                 }
 415         }
 416 }
 417
 418 void Client::Receive()
 419 {
 420         DSTACK(__FUNCTION_NAME);
 421         u32 data_maxsize = 10000;
 422         Buffer<u8> data(data_maxsize);
 423         u16 sender_peer_id;
 424         u32 datasize;
 425         {
 426                 //TimeTaker t1("con mutex and receive", m_device);
 427                 JMutexAutoLock lock(m_con_mutex);
 428                 datasize = m_con.Receive(sender_peer_id, *data, data_maxsize);
 429         }
 430         //TimeTaker t1("ProcessData", m_device);
 431         ProcessData(*data, datasize, sender_peer_id);
 432 }
 433
 434 /*
 435         sender_peer_id given to this shall be quaranteed to be a valid peer
 436 */
 437 void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 438 {
 439         DSTACK(__FUNCTION_NAME);
 440
 441         // Ignore packets that don't even fit a command
 442         if(datasize < 2)
 443         {
 444                 m_packetcounter.add(60000);
 445                 return;
 446         }
 447
 448         ToClientCommand command = (ToClientCommand)readU16(&data[0]);
 449
 450         //dstream<<"Client: received command="<<command<<std::endl;
 451         m_packetcounter.add((u16)command);
 452
 453         /*
 454                 If this check is removed, be sure to change the queue
 455                 system to know the ids
 456         */
 457         if(sender_peer_id != PEER_ID_SERVER)
 458         {
 459                 dout_client<<DTIME<<"Client::ProcessData(): Discarding data not "
 460                                 "coming from server: peer_id="<<sender_peer_id
 461                                 <<std::endl;
 462                 return;
 463         }
 464
 465         con::Peer *peer;
 466         {
 467                 JMutexAutoLock lock(m_con_mutex);
 468                 // All data is coming from the server
 469                 // PeerNotFoundException is handled by caller.
 470                 peer = m_con.GetPeer(PEER_ID_SERVER);
 471         }
 472
 473         u8 ser_version = m_server_ser_ver;
 474
 475         //dstream<<"Client received command="<<(int)command<<std::endl;
 476
 477         // Execute fast commands straight away
 478
 479         if(command == TOCLIENT_INIT)
 480         {
 481                 if(datasize < 3)
 482                         return;
 483
 484                 u8 deployed = data[2];
 485
 486                 dout_client<<DTIME<<"Client: TOCLIENT_INIT received with "
 487                                 "deployed="<<((int)deployed&0xff)<<std::endl;
 488
 489                 if(deployed < SER_FMT_VER_LOWEST
 490                                 || deployed > SER_FMT_VER_HIGHEST)
 491                 {
 492                         derr_client<<DTIME<<"Client: TOCLIENT_INIT: Server sent "
 493                                         <<"unsupported ser_fmt_ver"<<std::endl;
 494                         return;
 495                 }
 496
 497                 m_server_ser_ver = deployed;
 498
 499                 // Get player position
 500                 v3s16 playerpos_s16(0, BS*2+BS*20, 0);
 501                 if(datasize >= 2+1+6)
 502                         playerpos_s16 = readV3S16(&data[2+1]);
 503                 v3f playerpos_f = intToFloat(playerpos_s16, BS) - v3f(0, BS/2, 0);
 504
 505                 { //envlock
 506                         JMutexAutoLock envlock(m_env_mutex);
 507
 508                         // Set player position
 509                         Player *player = m_env.getLocalPlayer();
 510                         assert(player != NULL);
 511                         player->setPosition(playerpos_f);
 512                 }
 513
 514                 // Reply to server
 515                 u32 replysize = 2;
 516                 SharedBuffer<u8> reply(replysize);
 517                 writeU16(&reply[0], TOSERVER_INIT2);
 518                 // Send as reliable
 519                 m_con.Send(PEER_ID_SERVER, 1, reply, true);
 520
 521                 return;
 522         }
 523
 524         if(ser_version == SER_FMT_VER_INVALID)
 525         {
 526                 dout_client<<DTIME<<"WARNING: Client: Server serialization"
 527                                 " format invalid or not initialized."
 528                                 " Skipping incoming command="<<command<<std::endl;
 529                 return;
 530         }
 531
 532         // Just here to avoid putting the two if's together when
 533         // making some copypasta
 534         {}
 535
 536         if(command == TOCLIENT_REMOVENODE)
 537         {
 538                 if(datasize < 8)
 539                         return;
 540                 v3s16 p;
 541                 p.X = readS16(&data[2]);
 542                 p.Y = readS16(&data[4]);
 543                 p.Z = readS16(&data[6]);
 544
 545                 //TimeTaker t1("TOCLIENT_REMOVENODE", g_device);
 546
 547                 // This will clear the cracking animation after digging
 548                 ((ClientMap&)m_env.getMap()).clearTempMod(p);
 549
 550                 removeNode(p);
 551         }
 552         else if(command == TOCLIENT_ADDNODE)
 553         {
 554                 if(datasize < 8 + MapNode::serializedLength(ser_version))
 555                         return;
 556
 557                 v3s16 p;
 558                 p.X = readS16(&data[2]);
 559                 p.Y = readS16(&data[4]);
 560                 p.Z = readS16(&data[6]);
 561
 562                 //TimeTaker t1("TOCLIENT_ADDNODE", g_device);
 563
 564                 MapNode n;
 565                 n.deSerialize(&data[8], ser_version);
 566
 567                 addNode(p, n);
 568         }
 569         else if(command == TOCLIENT_PLAYERPOS)
 570         {
 571                 dstream<<"WARNING: Received deprecated TOCLIENT_PLAYERPOS"
 572                                 <<std::endl;
 573                 /*u16 our_peer_id;
 574                 {
 575                         JMutexAutoLock lock(m_con_mutex);
 576                         our_peer_id = m_con.GetPeerID();
 577                 }
 578                 // Cancel if we don't have a peer id
 579                 if(our_peer_id == PEER_ID_INEXISTENT){
 580                         dout_client<<DTIME<<"TOCLIENT_PLAYERPOS cancelled: "
 581                                         "we have no peer id"
 582                                         <<std::endl;
 583                         return;
 584                 }*/
 585
 586                 { //envlock
 587                         JMutexAutoLock envlock(m_env_mutex);
 588
 589                         u32 player_size = 2+12+12+4+4;
 590
 591                         u32 player_count = (datasize-2) / player_size;
 592                         u32 start = 2;
 593                         for(u32 i=0; i<player_count; i++)
 594                         {
 595                                 u16 peer_id = readU16(&data[start]);
 596
 597                                 Player *player = m_env.getPlayer(peer_id);
 598
 599                                 // Skip if player doesn't exist
 600                                 if(player == NULL)
 601                                 {
 602                                         start += player_size;
 603                                         continue;
 604                                 }
 605
 606                                 // Skip if player is local player
 607                                 if(player->isLocal())
 608                                 {
 609                                         start += player_size;
 610                                         continue;
 611                                 }
 612
 613                                 v3s32 ps = readV3S32(&data[start+2]);
 614                                 v3s32 ss = readV3S32(&data[start+2+12]);
 615                                 s32 pitch_i = readS32(&data[start+2+12+12]);
 616                                 s32 yaw_i = readS32(&data[start+2+12+12+4]);
 617                                 /*dstream<<"Client: got "
 618                                                 <<"pitch_i="<<pitch_i
 619                                                 <<" yaw_i="<<yaw_i<<std::endl;*/
 620                                 f32 pitch = (f32)pitch_i / 100.0;
 621                                 f32 yaw = (f32)yaw_i / 100.0;
 622                                 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
 623                                 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
 624                                 player->setPosition(position);
 625                                 player->setSpeed(speed);
 626                                 player->setPitch(pitch);
 627                                 player->setYaw(yaw);
 628
 629                                 /*dstream<<"Client: player "<<peer_id
 630                                                 <<" pitch="<<pitch
 631                                                 <<" yaw="<<yaw<<std::endl;*/
 632
 633                                 start += player_size;
 634                         }
 635                 } //envlock
 636         }
 637         else if(command == TOCLIENT_PLAYERINFO)
 638         {
 639                 u16 our_peer_id;
 640                 {
 641                         JMutexAutoLock lock(m_con_mutex);
 642                         our_peer_id = m_con.GetPeerID();
 643                 }
 644                 // Cancel if we don't have a peer id
 645                 if(our_peer_id == PEER_ID_INEXISTENT){
 646                         dout_client<<DTIME<<"TOCLIENT_PLAYERINFO cancelled: "
 647                                         "we have no peer id"
 648                                         <<std::endl;
 649                         return;
 650                 }
 651
 652                 //dstream<<DTIME<<"Client: Server reports players:"<<std::endl;
 653
 654                 { //envlock
 655                         JMutexAutoLock envlock(m_env_mutex);
 656
 657                         u32 item_size = 2+PLAYERNAME_SIZE;
 658                         u32 player_count = (datasize-2) / item_size;
 659                         u32 start = 2;
 660                         // peer_ids
 661                         core::list<u16> players_alive;
 662                         for(u32 i=0; i<player_count; i++)
 663                         {
 664                                 // Make sure the name ends in '\0'
 665                                 data[start+2+20-1] = 0;
 666
 667                                 u16 peer_id = readU16(&data[start]);
 668
 669                                 players_alive.push_back(peer_id);
 670
 671                                 /*dstream<<DTIME<<"peer_id="<<peer_id
 672                                                 <<" name="<<((char*)&data[start+2])<<std::endl;*/
 673
 674                                 // Don't update the info of the local player
 675                                 if(peer_id == our_peer_id)
 676                                 {
 677                                         start += item_size;
 678                                         continue;
 679                                 }
 680
 681                                 Player *player = m_env.getPlayer(peer_id);
 682
 683                                 // Create a player if it doesn't exist
 684                                 if(player == NULL)
 685                                 {
 686                                         player = new RemotePlayer(
 687                                                         m_device->getSceneManager()->getRootSceneNode(),
 688                                                         m_device,
 689                                                         -1);
 690                                         player->peer_id = peer_id;
 691                                         m_env.addPlayer(player);
 692                                         dout_client<<DTIME<<"Client: Adding new player "
 693                                                         <<peer_id<<std::endl;
 694                                 }
 695
 696                                 player->updateName((char*)&data[start+2]);
 697
 698                                 start += item_size;
 699                         }
 700
 701                         /*
 702                                 Remove those players from the environment that
 703                                 weren't listed by the server.
 704                         */
 705                         //dstream<<DTIME<<"Removing dead players"<<std::endl;
 706                         core::list<Player*> players = m_env.getPlayers();
 707                         core::list<Player*>::Iterator ip;
 708                         for(ip=players.begin(); ip!=players.end(); ip++)
 709                         {
 710                                 // Ingore local player
 711                                 if((*ip)->isLocal())
 712                                         continue;
 713
 714                                 // Warn about a special case
 715                                 if((*ip)->peer_id == 0)
 716                                 {
 717                                         dstream<<DTIME<<"WARNING: Client: Removing "
 718                                                         "dead player with id=0"<<std::endl;
 719                                 }
 720
 721                                 bool is_alive = false;
 722                                 core::list<u16>::Iterator i;
 723                                 for(i=players_alive.begin(); i!=players_alive.end(); i++)
 724                                 {
 725                                         if((*ip)->peer_id == *i)
 726                                         {
 727                                                 is_alive = true;
 728                                                 break;
 729                                         }
 730                                 }
 731                                 /*dstream<<DTIME<<"peer_id="<<((*ip)->peer_id)
 732                                                 <<" is_alive="<<is_alive<<std::endl;*/
 733                                 if(is_alive)
 734                                         continue;
 735                                 dstream<<DTIME<<"Removing dead player "<<(*ip)->peer_id
 736                                                 <<std::endl;
 737                                 m_env.removePlayer((*ip)->peer_id);
 738                         }
 739                 } //envlock
 740         }
 741         else if(command == TOCLIENT_SECTORMETA)
 742         {
 743                 /*
 744                         [0] u16 command
 745                         [2] u8 sector count
 746                         [3...] v2s16 pos + sector metadata
 747                 */
 748                 if(datasize < 3)
 749                         return;
 750
 751                 //dstream<<"Client received TOCLIENT_SECTORMETA"<<std::endl;
 752
 753                 { //envlock
 754                         JMutexAutoLock envlock(m_env_mutex);
 755
 756                         std::string datastring((char*)&data[2], datasize-2);
 757                         std::istringstream is(datastring, std::ios_base::binary);
 758
 759                         u8 buf[4];
 760
 761                         is.read((char*)buf, 1);
 762                         u16 sector_count = readU8(buf);
 763
 764                         //dstream<<"sector_count="<<sector_count<<std::endl;
 765
 766                         for(u16 i=0; i<sector_count; i++)
 767                         {
 768                                 // Read position
 769                                 is.read((char*)buf, 4);
 770                                 v2s16 pos = readV2S16(buf);
 771                                 /*dstream<<"Client: deserializing sector at "
 772                                                 <<"("<<pos.X<<","<<pos.Y<<")"<<std::endl;*/
 773                                 // Create sector
 774                                 assert(m_env.getMap().mapType() == MAPTYPE_CLIENT);
 775                                 ((ClientMap&)m_env.getMap()).deSerializeSector(pos, is);
 776                         }
 777                 } //envlock
 778         }
 779         else if(command == TOCLIENT_INVENTORY)
 780         {
 781                 if(datasize < 3)
 782                         return;
 783
 784                 //TimeTaker t1("Parsing TOCLIENT_INVENTORY", m_device);
 785
 786                 { //envlock
 787                         //TimeTaker t2("mutex locking", m_device);
 788                         JMutexAutoLock envlock(m_env_mutex);
 789                         //t2.stop();
 790
 791                         //TimeTaker t3("istringstream init", m_device);
 792                         std::string datastring((char*)&data[2], datasize-2);
 793                         std::istringstream is(datastring, std::ios_base::binary);
 794                         //t3.stop();
 795
 796                         //m_env.printPlayers(dstream);
 797
 798                         //TimeTaker t4("player get", m_device);
 799                         Player *player = m_env.getLocalPlayer();
 800                         assert(player != NULL);
 801                         //t4.stop();
 802
 803                         //TimeTaker t1("inventory.deSerialize()", m_device);
 804                         player->inventory.deSerialize(is);
 805                         //t1.stop();
 806
 807                         m_inventory_updated = true;
 808
 809                         //dstream<<"Client got player inventory:"<<std::endl;
 810                         //player->inventory.print(dstream);
 811                 }
 812         }
 813         //DEBUG
 814         else if(command == TOCLIENT_OBJECTDATA)
 815         //else if(0)
 816         {
 817                 // Strip command word and create a stringstream
 818                 std::string datastring((char*)&data[2], datasize-2);
 819                 std::istringstream is(datastring, std::ios_base::binary);
 820
 821                 { //envlock
 822
 823                 JMutexAutoLock envlock(m_env_mutex);
 824
 825                 u8 buf[12];
 826
 827                 /*
 828                         Read players
 829                 */
 830
 831                 is.read((char*)buf, 2);
 832                 u16 playercount = readU16(buf);
 833
 834                 for(u16 i=0; i<playercount; i++)
 835                 {
 836                         is.read((char*)buf, 2);
 837                         u16 peer_id = readU16(buf);
 838                         is.read((char*)buf, 12);
 839                         v3s32 p_i = readV3S32(buf);
 840                         is.read((char*)buf, 12);
 841                         v3s32 s_i = readV3S32(buf);
 842                         is.read((char*)buf, 4);
 843                         s32 pitch_i = readS32(buf);
 844                         is.read((char*)buf, 4);
 845                         s32 yaw_i = readS32(buf);
 846
 847                         Player *player = m_env.getPlayer(peer_id);
 848
 849                         // Skip if player doesn't exist
 850                         if(player == NULL)
 851                         {
 852                                 continue;
 853                         }
 854
 855                         // Skip if player is local player
 856                         if(player->isLocal())
 857                         {
 858                                 continue;
 859                         }
 860
 861                         f32 pitch = (f32)pitch_i / 100.0;
 862                         f32 yaw = (f32)yaw_i / 100.0;
 863                         v3f position((f32)p_i.X/100., (f32)p_i.Y/100., (f32)p_i.Z/100.);
 864                         v3f speed((f32)s_i.X/100., (f32)s_i.Y/100., (f32)s_i.Z/100.);
 865
 866                         player->setPosition(position);
 867                         player->setSpeed(speed);
 868                         player->setPitch(pitch);
 869                         player->setYaw(yaw);
 870                 }
 871
 872                 /*
 873                         Read block objects
 874                 */
 875
 876                 // Read active block count
 877                 is.read((char*)buf, 2);
 878                 u16 blockcount = readU16(buf);
 879
 880                 // Initialize delete queue with all active blocks
 881                 core::map<v3s16, bool> abs_to_delete;
 882                 for(core::map<v3s16, bool>::Iterator
 883                                 i = m_active_blocks.getIterator();
 884                                 i.atEnd() == false; i++)
 885                 {
 886                         v3s16 p = i.getNode()->getKey();
 887                         /*dstream<<"adding "
 888                                         <<"("<<p.x<<","<<p.y<<","<<p.z<<") "
 889                                         <<" to abs_to_delete"
 890                                         <<std::endl;*/
 891                         abs_to_delete.insert(p, true);
 892                 }
 893
 894                 /*dstream<<"Initial delete queue size: "<<abs_to_delete.size()
 895                                 <<std::endl;*/
 896
 897                 for(u16 i=0; i<blockcount; i++)
 898                 {
 899                         // Read blockpos
 900                         is.read((char*)buf, 6);
 901                         v3s16 p = readV3S16(buf);
 902                         // Get block from somewhere
 903                         MapBlock *block = NULL;
 904                         try{
 905                                 block = m_env.getMap().getBlockNoCreate(p);
 906                         }
 907                         catch(InvalidPositionException &e)
 908                         {
 909                                 //TODO: Create a dummy block?
 910                         }
 911                         if(block == NULL)
 912                         {
 913                                 dstream<<"WARNING: "
 914                                                 <<"Could not get block at blockpos "
 915                                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<") "
 916                                                 <<"in TOCLIENT_OBJECTDATA. Ignoring "
 917                                                 <<"following block object data."
 918                                                 <<std::endl;
 919                                 return;
 920                         }
 921
 922                         /*dstream<<"Client updating objects for block "
 923                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
 924                                         <<std::endl;*/
 925
 926                         // Insert to active block list
 927                         m_active_blocks.insert(p, true);
 928
 929                         // Remove from deletion queue
 930                         if(abs_to_delete.find(p) != NULL)
 931                                 abs_to_delete.remove(p);
 932
 933                         /*
 934                                 Update objects of block
 935
 936                                 NOTE: Be sure this is done in the main thread.
 937                         */
 938                         block->updateObjects(is, m_server_ser_ver,
 939                                         m_device->getSceneManager(), m_env.getDayNightRatio());
 940                 }
 941
 942                 /*dstream<<"Final delete queue size: "<<abs_to_delete.size()
 943                                 <<std::endl;*/
 944
 945                 // Delete objects of blocks in delete queue
 946                 for(core::map<v3s16, bool>::Iterator
 947                                 i = abs_to_delete.getIterator();
 948                                 i.atEnd() == false; i++)
 949                 {
 950                         v3s16 p = i.getNode()->getKey();
 951                         try
 952                         {
 953                                 MapBlock *block = m_env.getMap().getBlockNoCreate(p);
 954
 955                                 // Clear objects
 956                                 block->clearObjects();
 957                                 // Remove from active blocks list
 958                                 m_active_blocks.remove(p);
 959                         }
 960                         catch(InvalidPositionException &e)
 961                         {
 962                                 dstream<<"WARNAING: Client: "
 963                                                 <<"Couldn't clear objects of active->inactive"
 964                                                 <<" block "
 965                                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
 966                                                 <<" because block was not found"
 967                                                 <<std::endl;
 968                                 // Ignore
 969                         }
 970                 }
 971
 972                 } //envlock
 973         }
 974         else if(command == TOCLIENT_TIME_OF_DAY)
 975         {
 976                 if(datasize < 4)
 977                         return;
 978
 979                 u16 time = readU16(&data[2]);
 980                 time = time % 24000;
 981                 m_time_of_day.set(time);
 982                 //dstream<<"Client: time="<<time<<std::endl;
 983
 984                 /*
 985                         Day/night
 986
 987                         time_of_day:
 988                         0 = midnight
 989                         12000 = midday
 990                 */
 991                 {
 992                         const s32 daylength = 16;
 993                         const s32 nightlength = 6;
 994                         const s32 daytimelength = 8;
 995                         s32 d = daylength;
 996                         s32 t = (((m_time_of_day.get())%24000)/(24000/d));
 997                         u32 dr;
 998                         if(t < nightlength/2 || t >= d - nightlength/2)
 999                                 dr = 300;
1000                         else if(t >= d/2 - daytimelength/2 && t < d/2 + daytimelength/2)
1001                                 dr = 1000;
1002                         else
1003                                 dr = 750;
1004
1005                         dstream<<"time_of_day="<<m_time_of_day.get()
1006                                         <<", t="<<t
1007                                         <<", dr="<<dr
1008                                         <<std::endl;
1009
1010                         if(dr != m_env.getDayNightRatio())
1011                         {
1012                                 //dstream<<"dr="<<dr<<std::endl;
1013                                 dout_client<<DTIME<<"Client: changing day-night ratio"<<std::endl;
1014                                 m_env.setDayNightRatio(dr);
1015                                 m_env.expireMeshes(true);
1016                         }
1017                 }
1018
1019         }
1020         else if(command == TOCLIENT_CHAT_MESSAGE)
1021         {
1022                 /*
1023                         u16 command
1024                         u16 length
1025                         wstring message
1026                 */
1027                 u8 buf[6];
1028                 std::string datastring((char*)&data[2], datasize-2);
1029                 std::istringstream is(datastring, std::ios_base::binary);
1030
1031                 // Read stuff
1032                 is.read((char*)buf, 2);
1033                 u16 len = readU16(buf);
1034
1035                 std::wstring message;
1036                 for(u16 i=0; i<len; i++)
1037                 {
1038                         is.read((char*)buf, 2);
1039                         message += (wchar_t)readU16(buf);
1040                 }
1041
1042                 /*dstream<<"Client received chat message: "
1043                                 <<wide_to_narrow(message)<<std::endl;*/
1044
1045                 m_chat_queue.push_back(message);
1046         }
1047         else if(command == TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD)
1048         {
1049                 /*
1050                         u16 command
1051                         u16 count of removed objects
1052                         for all removed objects {
1053                                 u16 id
1054                         }
1055                         u16 count of added objects
1056                         for all added objects {
1057                                 u16 id
1058                                 u8 type
1059                         }
1060                 */
1061
1062                 char buf[6];
1063                 // Get all data except the command number
1064                 std::string datastring((char*)&data[2], datasize-2);
1065                 // Throw them in an istringstream
1066                 std::istringstream is(datastring, std::ios_base::binary);
1067
1068                 // Read stuff
1069
1070                 // Read removed objects
1071                 is.read(buf, 2);
1072                 u16 removed_count = readU16((u8*)buf);
1073                 for(u16 i=0; i<removed_count; i++)
1074                 {
1075                         is.read(buf, 2);
1076                         u16 id = readU16((u8*)buf);
1077                         // Remove it
1078                         {
1079                                 JMutexAutoLock envlock(m_env_mutex);
1080                                 m_env.removeActiveObject(id);
1081                         }
1082                 }
1083
1084                 // Read added objects
1085                 is.read(buf, 2);
1086                 u16 added_count = readU16((u8*)buf);
1087                 for(u16 i=0; i<added_count; i++)
1088                 {
1089                         is.read(buf, 2);
1090                         u16 id = readU16((u8*)buf);
1091                         is.read(buf, 1);
1092                         u8 type = readU8((u8*)buf);
1093                         // Add it
1094                         {
1095                                 JMutexAutoLock envlock(m_env_mutex);
1096                                 m_env.addActiveObject(id, type);
1097                         }
1098                 }
1099         }
1100         else if(command == TOCLIENT_ACTIVE_OBJECT_MESSAGES)
1101         {
1102                 /*
1103                         u16 command
1104                         for all objects
1105                         {
1106                                 u16 id
1107                                 u16 message length
1108                                 string message
1109                         }
1110                 */
1111                 char buf[6];
1112                 // Get all data except the command number
1113                 std::string datastring((char*)&data[2], datasize-2);
1114                 // Throw them in an istringstream
1115                 std::istringstream is(datastring, std::ios_base::binary);
1116
1117                 while(is.eof() == false)
1118                 {
1119                         // Read stuff
1120                         is.read(buf, 2);
1121                         u16 id = readU16((u8*)buf);
1122                         if(is.eof())
1123                                 break;
1124                         is.read(buf, 2);
1125                         u16 message_size = readU16((u8*)buf);
1126                         std::string message;
1127                         message.reserve(message_size);
1128                         for(u16 i=0; i<message_size; i++)
1129                         {
1130                                 is.read(buf, 1);
1131                                 message.append(buf, 1);
1132                         }
1133                         // Pass on to the environment
1134                         {
1135                                 JMutexAutoLock envlock(m_env_mutex);
1136                                 m_env.processActiveObjectMessage(id, message);
1137                         }
1138                 }
1139         }
1140         // Default to queueing it (for slow commands)
1141         else
1142         {
1143                 JMutexAutoLock lock(m_incoming_queue_mutex);
1144
1145                 IncomingPacket packet(data, datasize);
1146                 m_incoming_queue.push_back(packet);
1147         }
1148 }
1149
1150 /*
1151         Returns true if there was something in queue
1152 */
1153 bool Client::AsyncProcessPacket()
1154 {
1155         DSTACK(__FUNCTION_NAME);
1156
1157         try //for catching con::PeerNotFoundException
1158         {
1159
1160         con::Peer *peer;
1161         {
1162                 JMutexAutoLock lock(m_con_mutex);
1163                 // All data is coming from the server
1164                 peer = m_con.GetPeer(PEER_ID_SERVER);
1165         }
1166
1167         u8 ser_version = m_server_ser_ver;
1168
1169         IncomingPacket packet = getPacket();
1170         u8 *data = packet.m_data;
1171         u32 datasize = packet.m_datalen;
1172
1173         // An empty packet means queue is empty
1174         if(data == NULL){
1175                 return false;
1176         }
1177
1178         if(datasize < 2)
1179                 return true;
1180
1181         ToClientCommand command = (ToClientCommand)readU16(&data[0]);
1182
1183         if(command == TOCLIENT_BLOCKDATA)
1184         {
1185                 // Ignore too small packet
1186                 if(datasize < 8)
1187                         return true;
1188                 /*if(datasize < 8 + MapBlock::serializedLength(ser_version))
1189                         goto getdata;*/
1190
1191                 v3s16 p;
1192                 p.X = readS16(&data[2]);
1193                 p.Y = readS16(&data[4]);
1194                 p.Z = readS16(&data[6]);
1195
1196                 /*dout_client<<DTIME<<"Client: Thread: BLOCKDATA for ("
1197                                 <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1198
1199                 /*dstream<<DTIME<<"Client: Thread: BLOCKDATA for ("
1200                                 <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1201
1202                 std::string datastring((char*)&data[8], datasize-8);
1203                 std::istringstream istr(datastring, std::ios_base::binary);
1204
1205                 MapSector *sector;
1206                 MapBlock *block;
1207
1208                 { //envlock
1209                         JMutexAutoLock envlock(m_env_mutex);
1210
1211                         v2s16 p2d(p.X, p.Z);
1212                         sector = m_env.getMap().emergeSector(p2d);
1213
1214                         v2s16 sp = sector->getPos();
1215                         if(sp != p2d)
1216                         {
1217                                 dstream<<"ERROR: Got sector with getPos()="
1218                                                 <<"("<<sp.X<<","<<sp.Y<<"), tried to get"
1219                                                 <<"("<<p2d.X<<","<<p2d.Y<<")"<<std::endl;
1220                         }
1221
1222                         assert(sp == p2d);
1223                         //assert(sector->getPos() == p2d);
1224
1225                         try{
1226                                 block = sector->getBlockNoCreate(p.Y);
1227                                 /*
1228                                         Update an existing block
1229                                 */
1230                                 //dstream<<"Updating"<<std::endl;
1231                                 block->deSerialize(istr, ser_version);
1232                                 //block->setChangedFlag();
1233                         }
1234                         catch(InvalidPositionException &e)
1235                         {
1236                                 /*
1237                                         Create a new block
1238                                 */
1239                                 //dstream<<"Creating new"<<std::endl;
1240                                 block = new MapBlock(&m_env.getMap(), p);
1241                                 block->deSerialize(istr, ser_version);
1242                                 sector->insertBlock(block);
1243                                 //block->setChangedFlag();
1244
1245                                 //DEBUG
1246                                 /*NodeMod mod;
1247                                 mod.type = NODEMOD_CHANGECONTENT;
1248                                 mod.param = CONTENT_MESE;
1249                                 block->setTempMod(v3s16(8,10,8), mod);
1250                                 block->setTempMod(v3s16(8,9,8), mod);
1251                                 block->setTempMod(v3s16(8,8,8), mod);
1252                                 block->setTempMod(v3s16(8,7,8), mod);
1253                                 block->setTempMod(v3s16(8,6,8), mod);*/
1254
1255                                 /*
1256                                         Add some coulds
1257                                         Well, this is a dumb way to do it, they should just
1258                                         be drawn as separate objects.
1259                                 */
1260                                 /*if(p.Y == 3)
1261                                 {
1262                                         NodeMod mod;
1263                                         mod.type = NODEMOD_CHANGECONTENT;
1264                                         mod.param = CONTENT_CLOUD;
1265                                         v3s16 p2;
1266                                         p2.Y = 8;
1267                                         for(p2.X=3; p2.X<=13; p2.X++)
1268                                         for(p2.Z=3; p2.Z<=13; p2.Z++)
1269                                         {
1270                                                 block->setTempMod(p2, mod);
1271                                         }
1272                                 }*/
1273                         }
1274                 } //envlock
1275
1276                 /*
1277                         Acknowledge block.
1278                 */
1279                 /*
1280                         [0] u16 command
1281                         [2] u8 count
1282                         [3] v3s16 pos_0
1283                         [3+6] v3s16 pos_1
1284                         ...
1285                 */
1286                 u32 replysize = 2+1+6;
1287                 SharedBuffer<u8> reply(replysize);
1288                 writeU16(&reply[0], TOSERVER_GOTBLOCKS);
1289                 reply[2] = 1;
1290                 writeV3S16(&reply[3], p);
1291                 // Send as reliable
1292                 m_con.Send(PEER_ID_SERVER, 1, reply, true);
1293
1294                 /*
1295                         Update Mesh of this block and blocks at x-, y- and z-.
1296                         Environment should not be locked as it interlocks with the
1297                         main thread, from which is will want to retrieve textures.
1298                 */
1299
1300                 m_env.getClientMap().updateMeshes(block->getPos(), getDayNightRatio());
1301         }
1302         else
1303         {
1304                 dout_client<<DTIME<<"WARNING: Client: Ignoring unknown command "
1305                                 <<command<<std::endl;
1306         }
1307
1308         return true;
1309
1310         } //try
1311         catch(con::PeerNotFoundException &e)
1312         {
1313                 /*dout_client<<DTIME<<"Client::AsyncProcessData(): Cancelling: The server"
1314                                 " connection doesn't exist (a timeout or not yet connected?)"<<std::endl;*/
1315                 return false;
1316         }
1317 }
1318
1319 bool Client::AsyncProcessData()
1320 {
1321         for(;;)
1322         {
1323                 bool r = AsyncProcessPacket();
1324                 if(r == false)
1325                         break;
1326         }
1327         return false;
1328 }
1329
1330 void Client::Send(u16 channelnum, SharedBuffer<u8> data, bool reliable)
1331 {
1332         JMutexAutoLock lock(m_con_mutex);
1333         m_con.Send(PEER_ID_SERVER, channelnum, data, reliable);
1334 }
1335
1336 IncomingPacket Client::getPacket()
1337 {
1338         JMutexAutoLock lock(m_incoming_queue_mutex);
1339
1340         core::list<IncomingPacket>::Iterator i;
1341         // Refer to first one
1342         i = m_incoming_queue.begin();
1343
1344         // If queue is empty, return empty packet
1345         if(i == m_incoming_queue.end()){
1346                 IncomingPacket packet;
1347                 return packet;
1348         }
1349
1350         // Pop out first packet and return it
1351         IncomingPacket packet = *i;
1352         m_incoming_queue.erase(i);
1353         return packet;
1354 }
1355
1356 void Client::groundAction(u8 action, v3s16 nodepos_undersurface,
1357                 v3s16 nodepos_oversurface, u16 item)
1358 {
1359         if(connectedAndInitialized() == false){
1360                 dout_client<<DTIME<<"Client::groundAction() "
1361                                 "cancelled (not connected)"
1362                                 <<std::endl;
1363                 return;
1364         }
1365
1366         /*
1367                 length: 17
1368                 [0] u16 command
1369                 [2] u8 action
1370                 [3] v3s16 nodepos_undersurface
1371                 [9] v3s16 nodepos_abovesurface
1372                 [15] u16 item
1373                 actions:
1374                 0: start digging
1375                 1: place block
1376                 2: stop digging (all parameters ignored)
1377                 3: digging completed
1378         */
1379         u8 datasize = 2 + 1 + 6 + 6 + 2;
1380         SharedBuffer<u8> data(datasize);
1381         writeU16(&data[0], TOSERVER_GROUND_ACTION);
1382         writeU8(&data[2], action);
1383         writeV3S16(&data[3], nodepos_undersurface);
1384         writeV3S16(&data[9], nodepos_oversurface);
1385         writeU16(&data[15], item);
1386         Send(0, data, true);
1387 }
1388
1389 void Client::clickObject(u8 button, v3s16 blockpos, s16 id, u16 item)
1390 {
1391         if(connectedAndInitialized() == false){
1392                 dout_client<<DTIME<<"Client::clickObject() "
1393                                 "cancelled (not connected)"
1394                                 <<std::endl;
1395                 return;
1396         }
1397
1398         /*
1399                 [0] u16 command=TOSERVER_CLICK_OBJECT
1400                 [2] u8 button (0=left, 1=right)
1401                 [3] v3s16 block
1402                 [9] s16 id
1403                 [11] u16 item
1404         */
1405         u8 datasize = 2 + 1 + 6 + 2 + 2;
1406         SharedBuffer<u8> data(datasize);
1407         writeU16(&data[0], TOSERVER_CLICK_OBJECT);
1408         writeU8(&data[2], button);
1409         writeV3S16(&data[3], blockpos);
1410         writeS16(&data[9], id);
1411         writeU16(&data[11], item);
1412         Send(0, data, true);
1413 }
1414
1415 void Client::sendSignText(v3s16 blockpos, s16 id, std::string text)
1416 {
1417         /*
1418                 u16 command
1419                 v3s16 blockpos
1420                 s16 id
1421                 u16 textlen
1422                 textdata
1423         */
1424         std::ostringstream os(std::ios_base::binary);
1425         u8 buf[12];
1426
1427         // Write command
1428         writeU16(buf, TOSERVER_SIGNTEXT);
1429         os.write((char*)buf, 2);
1430
1431         // Write blockpos
1432         writeV3S16(buf, blockpos);
1433         os.write((char*)buf, 6);
1434
1435         // Write id
1436         writeS16(buf, id);
1437         os.write((char*)buf, 2);
1438
1439         u16 textlen = text.size();
1440         // Write text length
1441         writeS16(buf, textlen);
1442         os.write((char*)buf, 2);
1443
1444         // Write text
1445         os.write((char*)text.c_str(), textlen);
1446
1447         // Make data buffer
1448         std::string s = os.str();
1449         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
1450         // Send as reliable
1451         Send(0, data, true);
1452 }
1453
1454 void Client::sendInventoryAction(InventoryAction *a)
1455 {
1456         std::ostringstream os(std::ios_base::binary);
1457         u8 buf[12];
1458
1459         // Write command
1460         writeU16(buf, TOSERVER_INVENTORY_ACTION);
1461         os.write((char*)buf, 2);
1462
1463         a->serialize(os);
1464
1465         // Make data buffer
1466         std::string s = os.str();
1467         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
1468         // Send as reliable
1469         Send(0, data, true);
1470 }
1471
1472 void Client::sendChatMessage(const std::wstring &message)
1473 {
1474         std::ostringstream os(std::ios_base::binary);
1475         u8 buf[12];
1476
1477         // Write command
1478         writeU16(buf, TOSERVER_CHAT_MESSAGE);
1479         os.write((char*)buf, 2);
1480
1481         // Write length
1482         writeU16(buf, message.size());
1483         os.write((char*)buf, 2);
1484
1485         // Write string
1486         for(u32 i=0; i<message.size(); i++)
1487         {
1488                 u16 w = message[i];
1489                 writeU16(buf, w);
1490                 os.write((char*)buf, 2);
1491         }
1492
1493         // Make data buffer
1494         std::string s = os.str();
1495         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
1496         // Send as reliable
1497         Send(0, data, true);
1498 }
1499
1500 void Client::sendPlayerPos()
1501 {
1502         JMutexAutoLock envlock(m_env_mutex);
1503
1504         Player *myplayer = m_env.getLocalPlayer();
1505         if(myplayer == NULL)
1506                 return;
1507
1508         u16 our_peer_id;
1509         {
1510                 JMutexAutoLock lock(m_con_mutex);
1511                 our_peer_id = m_con.GetPeerID();
1512         }
1513
1514         // Set peer id if not set already
1515         if(myplayer->peer_id == PEER_ID_INEXISTENT)
1516                 myplayer->peer_id = our_peer_id;
1517         // Check that an existing peer_id is the same as the connection's
1518         assert(myplayer->peer_id == our_peer_id);
1519
1520         v3f pf = myplayer->getPosition();
1521         v3s32 position(pf.X*100, pf.Y*100, pf.Z*100);
1522         v3f sf = myplayer->getSpeed();
1523         v3s32 speed(sf.X*100, sf.Y*100, sf.Z*100);
1524         s32 pitch = myplayer->getPitch() * 100;
1525         s32 yaw = myplayer->getYaw() * 100;
1526
1527         /*
1528                 Format:
1529                 [0] u16 command
1530                 [2] v3s32 position*100
1531                 [2+12] v3s32 speed*100
1532                 [2+12+12] s32 pitch*100
1533                 [2+12+12+4] s32 yaw*100
1534         */
1535
1536         SharedBuffer<u8> data(2+12+12+4+4);
1537         writeU16(&data[0], TOSERVER_PLAYERPOS);
1538         writeV3S32(&data[2], position);
1539         writeV3S32(&data[2+12], speed);
1540         writeS32(&data[2+12+12], pitch);
1541         writeS32(&data[2+12+12+4], yaw);
1542
1543         // Send as unreliable
1544         Send(0, data, false);
1545 }
1546
1547 void Client::removeNode(v3s16 p)
1548 {
1549         JMutexAutoLock envlock(m_env_mutex);
1550
1551         core::map<v3s16, MapBlock*> modified_blocks;
1552
1553         try
1554         {
1555                 //TimeTaker t("removeNodeAndUpdate", m_device);
1556                 m_env.getMap().removeNodeAndUpdate(p, modified_blocks);
1557         }
1558         catch(InvalidPositionException &e)
1559         {
1560         }
1561
1562         for(core::map<v3s16, MapBlock * >::Iterator
1563                         i = modified_blocks.getIterator();
1564                         i.atEnd() == false; i++)
1565         {
1566                 v3s16 p = i.getNode()->getKey();
1567                 m_env.getClientMap().updateMeshes(p, m_env.getDayNightRatio());
1568         }
1569 }
1570
1571 void Client::addNode(v3s16 p, MapNode n)
1572 {
1573         JMutexAutoLock envlock(m_env_mutex);
1574
1575         core::map<v3s16, MapBlock*> modified_blocks;
1576
1577         try
1578         {
1579                 m_env.getMap().addNodeAndUpdate(p, n, modified_blocks);
1580         }
1581         catch(InvalidPositionException &e)
1582         {}
1583
1584         for(core::map<v3s16, MapBlock * >::Iterator
1585                         i = modified_blocks.getIterator();
1586                         i.atEnd() == false; i++)
1587         {
1588                 v3s16 p = i.getNode()->getKey();
1589                 m_env.getClientMap().updateMeshes(p, m_env.getDayNightRatio());
1590         }
1591 }
1592
1593 void Client::updateCamera(v3f pos, v3f dir)
1594 {
1595         m_env.getMap().updateCamera(pos, dir);
1596         camera_position = pos;
1597         camera_direction = dir;
1598 }
1599
1600 MapNode Client::getNode(v3s16 p)
1601 {
1602         JMutexAutoLock envlock(m_env_mutex);
1603         return m_env.getMap().getNode(p);
1604 }
1605
1606 v3f Client::getPlayerPosition()
1607 {
1608         JMutexAutoLock envlock(m_env_mutex);
1609         LocalPlayer *player = m_env.getLocalPlayer();
1610         assert(player != NULL);
1611         return player->getPosition();
1612 }
1613
1614 void Client::setPlayerControl(PlayerControl &control)
1615 {
1616         JMutexAutoLock envlock(m_env_mutex);
1617         LocalPlayer *player = m_env.getLocalPlayer();
1618         assert(player != NULL);
1619         player->control = control;
1620 }
1621
1622 // Returns true if the inventory of the local player has been
1623 // updated from the server. If it is true, it is set to false.
1624 bool Client::getLocalInventoryUpdated()
1625 {
1626         // m_inventory_updated is behind envlock
1627         JMutexAutoLock envlock(m_env_mutex);
1628         bool updated = m_inventory_updated;
1629         m_inventory_updated = false;
1630         return updated;
1631 }
1632
1633 // Copies the inventory of the local player to parameter
1634 void Client::getLocalInventory(Inventory &dst)
1635 {
1636         JMutexAutoLock envlock(m_env_mutex);
1637         Player *player = m_env.getLocalPlayer();
1638         assert(player != NULL);
1639         dst = player->inventory;
1640 }
1641
1642 MapBlockObject * Client::getSelectedObject(
1643                 f32 max_d,
1644                 v3f from_pos_f_on_map,
1645                 core::line3d<f32> shootline_on_map
1646         )
1647 {
1648         JMutexAutoLock envlock(m_env_mutex);
1649
1650         core::array<DistanceSortedObject> objects;
1651
1652         for(core::map<v3s16, bool>::Iterator
1653                         i = m_active_blocks.getIterator();
1654                         i.atEnd() == false; i++)
1655         {
1656                 v3s16 p = i.getNode()->getKey();
1657
1658                 MapBlock *block = NULL;
1659                 try
1660                 {
1661                         block = m_env.getMap().getBlockNoCreate(p);
1662                 }
1663                 catch(InvalidPositionException &e)
1664                 {
1665                         continue;
1666                 }
1667
1668                 // Calculate from_pos relative to block
1669                 v3s16 block_pos_i_on_map = block->getPosRelative();
1670                 v3f block_pos_f_on_map = intToFloat(block_pos_i_on_map, BS);
1671                 v3f from_pos_f_on_block = from_pos_f_on_map - block_pos_f_on_map;
1672
1673                 block->getObjects(from_pos_f_on_block, max_d, objects);
1674                 //block->getPseudoObjects(from_pos_f_on_block, max_d, objects);
1675         }
1676
1677         //dstream<<"Collected "<<objects.size()<<" nearby objects"<<std::endl;
1678
1679         // Sort them.
1680         // After this, the closest object is the first in the array.
1681         objects.sort();
1682
1683         for(u32 i=0; i<objects.size(); i++)
1684         {
1685                 MapBlockObject *obj = objects[i].obj;
1686                 MapBlock *block = obj->getBlock();
1687
1688                 // Calculate shootline relative to block
1689                 v3s16 block_pos_i_on_map = block->getPosRelative();
1690                 v3f block_pos_f_on_map = intToFloat(block_pos_i_on_map, BS);
1691                 core::line3d<f32> shootline_on_block(
1692                                 shootline_on_map.start - block_pos_f_on_map,
1693                                 shootline_on_map.end - block_pos_f_on_map
1694                 );
1695
1696                 if(obj->isSelected(shootline_on_block))
1697                 {
1698                         //dstream<<"Returning selected object"<<std::endl;
1699                         return obj;
1700                 }
1701         }
1702
1703         //dstream<<"No object selected; returning NULL."<<std::endl;
1704         return NULL;
1705 }
1706
1707 void Client::printDebugInfo(std::ostream &os)
1708 {
1709         //JMutexAutoLock lock1(m_fetchblock_mutex);
1710         JMutexAutoLock lock2(m_incoming_queue_mutex);
1711
1712         os<<"m_incoming_queue.getSize()="<<m_incoming_queue.getSize()
1713                 //<<", m_fetchblock_history.size()="<<m_fetchblock_history.size()
1714                 //<<", m_opt_not_found_history.size()="<<m_opt_not_found_history.size()
1715                 <<std::endl;
1716 }
1717
1718 /*s32 Client::getDayNightIndex()
1719 {
1720         assert(m_daynight_i >= 0 && m_daynight_i < DAYNIGHT_CACHE_COUNT);
1721         return m_daynight_i;
1722 }*/
1723
1724 u32 Client::getDayNightRatio()
1725 {
1726         JMutexAutoLock envlock(m_env_mutex);
1727         return m_env.getDayNightRatio();
1728 }
1729
1730 /*void Client::updateSomeExpiredMeshes()
1731 {
1732         TimeTaker timer("updateSomeExpiredMeshes()", g_device);
1733
1734         Player *player;
1735         {
1736                 JMutexAutoLock envlock(m_env_mutex);
1737                 player = m_env.getLocalPlayer();
1738         }
1739
1740         u32 daynight_ratio = getDayNightRatio();
1741
1742         v3f playerpos = player->getPosition();
1743         v3f playerspeed = player->getSpeed();
1744
1745         v3s16 center_nodepos = floatToInt(playerpos, BS);
1746         v3s16 center = getNodeBlockPos(center_nodepos);
1747
1748         u32 counter = 0;
1749
1750         s16 d_max = 5;
1751
1752         for(s16 d = 0; d <= d_max; d++)
1753         {
1754                 core::list<v3s16> list;
1755                 getFacePositions(list, d);
1756
1757                 core::list<v3s16>::Iterator li;
1758                 for(li=list.begin(); li!=list.end(); li++)
1759                 {
1760                         v3s16 p = *li + center;
1761                         MapBlock *block = NULL;
1762                         try
1763                         {
1764                                 //JMutexAutoLock envlock(m_env_mutex);
1765                                 block = m_env.getMap().getBlockNoCreate(p);
1766                         }
1767                         catch(InvalidPositionException &e)
1768                         {
1769                         }
1770
1771                         if(block == NULL)
1772                                 continue;
1773
1774                         if(block->getMeshExpired() == false)
1775                                 continue;
1776
1777                         block->updateMesh(daynight_ratio);
1778
1779                         counter++;
1780                         if(counter >= 5)
1781                                 return;
1782                 }
1783         }
1784 }*/
1785