src/clientiface.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2014 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 <sstream>
  21
  22 #include "clientiface.h"
  23 #include "player.h"
  24 #include "settings.h"
  25 #include "mapblock.h"
  26 #include "connection.h"
  27 #include "environment.h"
  28 #include "map.h"
  29 #include "emerge.h"
  30 #include "serverobject.h"              // TODO this is used for cleanup of only
  31
  32 #include "util/numeric.h"
  33 #include "util/mathconstants.h"
  34
  35 #include "main.h"                      // for g_settings
  36
  37 void RemoteClient::GetNextBlocks(
  38                 ServerEnvironment *env,
  39                 EmergeManager * emerge,
  40                 float dtime,
  41                 std::vector<PrioritySortedBlockTransfer> &dest)
  42 {
  43         DSTACK(__FUNCTION_NAME);
  44
  45
  46         // Increment timers
  47         m_nothing_to_send_pause_timer -= dtime;
  48         m_nearest_unsent_reset_timer += dtime;
  49
  50         if(m_nothing_to_send_pause_timer >= 0)
  51                 return;
  52
  53         Player *player = env->getPlayer(peer_id);
  54         // This can happen sometimes; clients and players are not in perfect sync.
  55         if(player == NULL)
  56                 return;
  57
  58         // Won't send anything if already sending
  59         if(m_blocks_sending.size() >= g_settings->getU16
  60                         ("max_simultaneous_block_sends_per_client"))
  61         {
  62                 //infostream<<"Not sending any blocks, Queue full."<<std::endl;
  63                 return;
  64         }
  65
  66         v3f playerpos = player->getPosition();
  67         v3f playerspeed = player->getSpeed();
  68         v3f playerspeeddir(0,0,0);
  69         if(playerspeed.getLength() > 1.0*BS)
  70                 playerspeeddir = playerspeed / playerspeed.getLength();
  71         // Predict to next block
  72         v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
  73
  74         v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
  75
  76         v3s16 center = getNodeBlockPos(center_nodepos);
  77
  78         // Camera position and direction
  79         v3f camera_pos = player->getEyePosition();
  80         v3f camera_dir = v3f(0,0,1);
  81         camera_dir.rotateYZBy(player->getPitch());
  82         camera_dir.rotateXZBy(player->getYaw());
  83
  84         /*infostream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
  85                         <<camera_dir.Z<<")"<<std::endl;*/
  86
  87         /*
  88                 Get the starting value of the block finder radius.
  89         */
  90
  91         if(m_last_center != center)
  92         {
  93                 m_nearest_unsent_d = 0;
  94                 m_last_center = center;
  95         }
  96
  97         /*infostream<<"m_nearest_unsent_reset_timer="
  98                         <<m_nearest_unsent_reset_timer<<std::endl;*/
  99
 100         // Reset periodically to workaround for some bugs or stuff
 101         if(m_nearest_unsent_reset_timer > 20.0)
 102         {
 103                 m_nearest_unsent_reset_timer = 0;
 104                 m_nearest_unsent_d = 0;
 105                 //infostream<<"Resetting m_nearest_unsent_d for "
 106                 //              <<server->getPlayerName(peer_id)<<std::endl;
 107         }
 108
 109         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 110         s16 d_start = m_nearest_unsent_d;
 111
 112         //infostream<<"d_start="<<d_start<<std::endl;
 113
 114         u16 max_simul_sends_setting = g_settings->getU16
 115                         ("max_simultaneous_block_sends_per_client");
 116         u16 max_simul_sends_usually = max_simul_sends_setting;
 117
 118         /*
 119                 Check the time from last addNode/removeNode.
 120
 121                 Decrease send rate if player is building stuff.
 122         */
 123         m_time_from_building += dtime;
 124         if(m_time_from_building < g_settings->getFloat(
 125                                 "full_block_send_enable_min_time_from_building"))
 126         {
 127                 max_simul_sends_usually
 128                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 129         }
 130
 131         /*
 132                 Number of blocks sending + number of blocks selected for sending
 133         */
 134         u32 num_blocks_selected = m_blocks_sending.size();
 135
 136         /*
 137                 next time d will be continued from the d from which the nearest
 138                 unsent block was found this time.
 139
 140                 This is because not necessarily any of the blocks found this
 141                 time are actually sent.
 142         */
 143         s32 new_nearest_unsent_d = -1;
 144
 145         const s16 full_d_max = g_settings->getS16("max_block_send_distance");
 146         s16 d_max = full_d_max;
 147         s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
 148
 149         // Don't loop very much at a time
 150         s16 max_d_increment_at_time = 2;
 151         if(d_max > d_start + max_d_increment_at_time)
 152                 d_max = d_start + max_d_increment_at_time;
 153
 154         s32 nearest_emerged_d = -1;
 155         s32 nearest_emergefull_d = -1;
 156         s32 nearest_sent_d = -1;
 157         bool queue_is_full = false;
 158
 159         s16 d;
 160         for(d = d_start; d <= d_max; d++)
 161         {
 162                 /*
 163                         Get the border/face dot coordinates of a "d-radiused"
 164                         box
 165                 */
 166                 std::list<v3s16> list;
 167                 getFacePositions(list, d);
 168
 169                 std::list<v3s16>::iterator li;
 170                 for(li=list.begin(); li!=list.end(); ++li)
 171                 {
 172                         v3s16 p = *li + center;
 173
 174                         /*
 175                                 Send throttling
 176                                 - Don't allow too many simultaneous transfers
 177                                 - EXCEPT when the blocks are very close
 178
 179                                 Also, don't send blocks that are already flying.
 180                         */
 181
 182                         // Start with the usual maximum
 183                         u16 max_simul_dynamic = max_simul_sends_usually;
 184
 185                         // If block is very close, allow full maximum
 186                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 187                                 max_simul_dynamic = max_simul_sends_setting;
 188
 189                         // Don't select too many blocks for sending
 190                         if(num_blocks_selected >= max_simul_dynamic)
 191                         {
 192                                 queue_is_full = true;
 193                                 goto queue_full_break;
 194                         }
 195
 196                         // Don't send blocks that are currently being transferred
 197                         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 198                                 continue;
 199
 200                         /*
 201                                 Do not go over-limit
 202                         */
 203                         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 204                         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 205                         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 206                         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 207                         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 208                         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 209                                 continue;
 210
 211                         // If this is true, inexistent block will be made from scratch
 212                         bool generate = d <= d_max_gen;
 213
 214                         {
 215                                 /*// Limit the generating area vertically to 2/3
 216                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 217                                         generate = false;*/
 218
 219                                 // Limit the send area vertically to 1/2
 220                                 if(abs(p.Y - center.Y) > full_d_max / 2)
 221                                         continue;
 222                         }
 223
 224                         /*
 225                                 Don't generate or send if not in sight
 226                                 FIXME This only works if the client uses a small enough
 227                                 FOV setting. The default of 72 degrees is fine.
 228                         */
 229
 230                         float camera_fov = (72.0*M_PI/180) * 4./3.;
 231                         if(isBlockInSight(p, camera_pos, camera_dir, camera_fov, 10000*BS) == false)
 232                         {
 233                                 continue;
 234                         }
 235
 236                         /*
 237                                 Don't send already sent blocks
 238                         */
 239                         {
 240                                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 241                                 {
 242                                         continue;
 243                                 }
 244                         }
 245
 246                         /*
 247                                 Check if map has this block
 248                         */
 249                         MapBlock *block = env->getMap().getBlockNoCreateNoEx(p);
 250
 251                         bool surely_not_found_on_disk = false;
 252                         bool block_is_invalid = false;
 253                         if(block != NULL)
 254                         {
 255                                 // Reset usage timer, this block will be of use in the future.
 256                                 block->resetUsageTimer();
 257
 258                                 // Block is dummy if data doesn't exist.
 259                                 // It means it has been not found from disk and not generated
 260                                 if(block->isDummy())
 261                                 {
 262                                         surely_not_found_on_disk = true;
 263                                 }
 264
 265                                 // Block is valid if lighting is up-to-date and data exists
 266                                 if(block->isValid() == false)
 267                                 {
 268                                         block_is_invalid = true;
 269                                 }
 270
 271                                 if(block->isGenerated() == false)
 272                                         block_is_invalid = true;
 273
 274                                 /*
 275                                         If block is not close, don't send it unless it is near
 276                                         ground level.
 277
 278                                         Block is near ground level if night-time mesh
 279                                         differs from day-time mesh.
 280                                 */
 281                                 if(d >= 4)
 282                                 {
 283                                         if(block->getDayNightDiff() == false)
 284                                                 continue;
 285                                 }
 286                         }
 287
 288                         /*
 289                                 If block has been marked to not exist on disk (dummy)
 290                                 and generating new ones is not wanted, skip block.
 291                         */
 292                         if(generate == false && surely_not_found_on_disk == true)
 293                         {
 294                                 // get next one.
 295                                 continue;
 296                         }
 297
 298                         /*
 299                                 Add inexistent block to emerge queue.
 300                         */
 301                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 302                         {
 303                                 if (emerge->enqueueBlockEmerge(peer_id, p, generate)) {
 304                                         if (nearest_emerged_d == -1)
 305                                                 nearest_emerged_d = d;
 306                                 } else {
 307                                         if (nearest_emergefull_d == -1)
 308                                                 nearest_emergefull_d = d;
 309                                         goto queue_full_break;
 310                                 }
 311
 312                                 // get next one.
 313                                 continue;
 314                         }
 315
 316                         if(nearest_sent_d == -1)
 317                                 nearest_sent_d = d;
 318
 319                         /*
 320                                 Add block to send queue
 321                         */
 322                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 323
 324                         dest.push_back(q);
 325
 326                         num_blocks_selected += 1;
 327                 }
 328         }
 329 queue_full_break:
 330
 331         // If nothing was found for sending and nothing was queued for
 332         // emerging, continue next time browsing from here
 333         if(nearest_emerged_d != -1){
 334                 new_nearest_unsent_d = nearest_emerged_d;
 335         } else if(nearest_emergefull_d != -1){
 336                 new_nearest_unsent_d = nearest_emergefull_d;
 337         } else {
 338                 if(d > g_settings->getS16("max_block_send_distance")){
 339                         new_nearest_unsent_d = 0;
 340                         m_nothing_to_send_pause_timer = 2.0;
 341                 } else {
 342                         if(nearest_sent_d != -1)
 343                                 new_nearest_unsent_d = nearest_sent_d;
 344                         else
 345                                 new_nearest_unsent_d = d;
 346                 }
 347         }
 348
 349         if(new_nearest_unsent_d != -1)
 350                 m_nearest_unsent_d = new_nearest_unsent_d;
 351 }
 352
 353 void RemoteClient::GotBlock(v3s16 p)
 354 {
 355         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 356                 m_blocks_sending.erase(p);
 357         else
 358         {
 359                 m_excess_gotblocks++;
 360         }
 361         m_blocks_sent.insert(p);
 362 }
 363
 364 void RemoteClient::SentBlock(v3s16 p)
 365 {
 366         if(m_blocks_sending.find(p) == m_blocks_sending.end())
 367                 m_blocks_sending[p] = 0.0;
 368         else
 369                 infostream<<"RemoteClient::SentBlock(): Sent block"
 370                                 " already in m_blocks_sending"<<std::endl;
 371 }
 372
 373 void RemoteClient::SetBlockNotSent(v3s16 p)
 374 {
 375         m_nearest_unsent_d = 0;
 376
 377         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 378                 m_blocks_sending.erase(p);
 379         if(m_blocks_sent.find(p) != m_blocks_sent.end())
 380                 m_blocks_sent.erase(p);
 381 }
 382
 383 void RemoteClient::SetBlocksNotSent(std::map<v3s16, MapBlock*> &blocks)
 384 {
 385         m_nearest_unsent_d = 0;
 386
 387         for(std::map<v3s16, MapBlock*>::iterator
 388                         i = blocks.begin();
 389                         i != blocks.end(); ++i)
 390         {
 391                 v3s16 p = i->first;
 392
 393                 if(m_blocks_sending.find(p) != m_blocks_sending.end())
 394                         m_blocks_sending.erase(p);
 395                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 396                         m_blocks_sent.erase(p);
 397         }
 398 }
 399
 400 void RemoteClient::notifyEvent(ClientStateEvent event)
 401 {
 402         std::ostringstream myerror;
 403         switch (m_state)
 404         {
 405         case Invalid:
 406                 //intentionally do nothing
 407                 break;
 408
 409         case Created:
 410                 switch(event)
 411                 {
 412                 case Init:
 413                         m_state = InitSent;
 414                         break;
 415
 416                 case Disconnect:
 417                         m_state = Disconnecting;
 418                         break;
 419
 420                 case SetDenied:
 421                         m_state = Denied;
 422                         break;
 423
 424                 /* GotInit2 SetDefinitionsSent SetMediaSent */
 425                 default:
 426                         myerror << "Created: Invalid client state transition! " << event;
 427                         throw ClientStateError(myerror.str());
 428                 }
 429                 break;
 430
 431         case Denied:
 432                 /* don't do anything if in denied state */
 433                 break;
 434
 435         case InitSent:
 436                 switch(event)
 437                 {
 438                 case GotInit2:
 439                         confirmSerializationVersion();
 440                         m_state = InitDone;
 441                         break;
 442
 443                 case Disconnect:
 444                         m_state = Disconnecting;
 445                         break;
 446
 447                 case SetDenied:
 448                         m_state = Denied;
 449                         break;
 450
 451                 /* Init SetDefinitionsSent SetMediaSent */
 452                 default:
 453                         myerror << "InitSent: Invalid client state transition! " << event;
 454                         throw ClientStateError(myerror.str());
 455                 }
 456                 break;
 457
 458         case InitDone:
 459                 switch(event)
 460                 {
 461                 case SetDefinitionsSent:
 462                         m_state = DefinitionsSent;
 463                         break;
 464
 465                 case Disconnect:
 466                         m_state = Disconnecting;
 467                         break;
 468
 469                 case SetDenied:
 470                         m_state = Denied;
 471                         break;
 472
 473                 /* Init GotInit2 SetMediaSent */
 474                 default:
 475                         myerror << "InitDone: Invalid client state transition! " << event;
 476                         throw ClientStateError(myerror.str());
 477                 }
 478                 break;
 479
 480         case DefinitionsSent:
 481                 switch(event)
 482                 {
 483                 case SetClientReady:
 484                         m_state = Active;
 485                         break;
 486
 487                 case Disconnect:
 488                         m_state = Disconnecting;
 489                         break;
 490
 491                 case SetDenied:
 492                         m_state = Denied;
 493                         break;
 494
 495                 /* Init GotInit2 SetDefinitionsSent */
 496                 default:
 497                         myerror << "DefinitionsSent: Invalid client state transition! " << event;
 498                         throw ClientStateError(myerror.str());
 499                 }
 500                 break;
 501
 502         case Active:
 503                 switch(event)
 504                 {
 505                 case SetDenied:
 506                         m_state = Denied;
 507                         break;
 508
 509                 case Disconnect:
 510                         m_state = Disconnecting;
 511                         break;
 512
 513                 /* Init GotInit2 SetDefinitionsSent SetMediaSent SetDenied */
 514                 default:
 515                         myerror << "Active: Invalid client state transition! " << event;
 516                         throw ClientStateError(myerror.str());
 517                         break;
 518                 }
 519                 break;
 520
 521         case Disconnecting:
 522                 /* we are already disconnecting */
 523                 break;
 524         }
 525 }
 526
 527 u32 RemoteClient::uptime()
 528 {
 529         return getTime(PRECISION_SECONDS) - m_connection_time;
 530 }
 531
 532 ClientInterface::ClientInterface(con::Connection* con)
 533 :
 534         m_con(con),
 535         m_env(NULL),
 536         m_print_info_timer(0.0)
 537 {
 538
 539 }
 540 ClientInterface::~ClientInterface()
 541 {
 542         /*
 543                 Delete clients
 544         */
 545         {
 546                 JMutexAutoLock clientslock(m_clients_mutex);
 547
 548                 for(std::map<u16, RemoteClient*>::iterator
 549                         i = m_clients.begin();
 550                         i != m_clients.end(); ++i)
 551                 {
 552
 553                         // Delete client
 554                         delete i->second;
 555                 }
 556         }
 557 }
 558
 559 std::list<u16> ClientInterface::getClientIDs(ClientState min_state)
 560 {
 561         std::list<u16> reply;
 562         JMutexAutoLock clientslock(m_clients_mutex);
 563
 564         for(std::map<u16, RemoteClient*>::iterator
 565                 i = m_clients.begin();
 566                 i != m_clients.end(); ++i)
 567         {
 568                 if (i->second->getState() >= min_state)
 569                         reply.push_back(i->second->peer_id);
 570         }
 571
 572         return reply;
 573 }
 574
 575 std::vector<std::string> ClientInterface::getPlayerNames()
 576 {
 577         return m_clients_names;
 578 }
 579
 580
 581 void ClientInterface::step(float dtime)
 582 {
 583         m_print_info_timer += dtime;
 584         if(m_print_info_timer >= 30.0)
 585         {
 586                 m_print_info_timer = 0.0;
 587                 UpdatePlayerList();
 588         }
 589 }
 590
 591 void ClientInterface::UpdatePlayerList()
 592 {
 593         if (m_env != NULL)
 594                 {
 595                 std::list<u16> clients = getClientIDs();
 596                 m_clients_names.clear();
 597
 598
 599                 if(clients.size() != 0)
 600                         infostream<<"Players:"<<std::endl;
 601                 for(std::list<u16>::iterator
 602                         i = clients.begin();
 603                         i != clients.end(); ++i)
 604                 {
 605                         Player *player = m_env->getPlayer(*i);
 606                         if(player==NULL)
 607                                 continue;
 608                         infostream<<"* "<<player->getName()<<"\t";
 609
 610                         {
 611                                 JMutexAutoLock clientslock(m_clients_mutex);
 612                                 RemoteClient* client = lockedGetClientNoEx(*i);
 613                                 if(client != NULL)
 614                                         client->PrintInfo(infostream);
 615                         }
 616                         m_clients_names.push_back(player->getName());
 617                 }
 618         }
 619 }
 620
 621 void ClientInterface::send(u16 peer_id,u8 channelnum,
 622                 SharedBuffer<u8> data, bool reliable)
 623 {
 624         m_con->Send(peer_id, channelnum, data, reliable);
 625 }
 626
 627 void ClientInterface::sendToAll(u16 channelnum,
 628                 SharedBuffer<u8> data, bool reliable)
 629 {
 630         JMutexAutoLock clientslock(m_clients_mutex);
 631         for(std::map<u16, RemoteClient*>::iterator
 632                 i = m_clients.begin();
 633                 i != m_clients.end(); ++i)
 634         {
 635                 RemoteClient *client = i->second;
 636
 637                 if (client->net_proto_version != 0)
 638                 {
 639                         m_con->Send(client->peer_id, channelnum, data, reliable);
 640                 }
 641         }
 642 }
 643
 644 RemoteClient* ClientInterface::getClientNoEx(u16 peer_id, ClientState state_min)
 645 {
 646         JMutexAutoLock clientslock(m_clients_mutex);
 647         std::map<u16, RemoteClient*>::iterator n;
 648         n = m_clients.find(peer_id);
 649         // The client may not exist; clients are immediately removed if their
 650         // access is denied, and this event occurs later then.
 651         if(n == m_clients.end())
 652                 return NULL;
 653
 654         if (n->second->getState() >= state_min)
 655                 return n->second;
 656         else
 657                 return NULL;
 658 }
 659
 660 RemoteClient* ClientInterface::lockedGetClientNoEx(u16 peer_id, ClientState state_min)
 661 {
 662         std::map<u16, RemoteClient*>::iterator n;
 663         n = m_clients.find(peer_id);
 664         // The client may not exist; clients are immediately removed if their
 665         // access is denied, and this event occurs later then.
 666         if(n == m_clients.end())
 667                 return NULL;
 668
 669         if (n->second->getState() >= state_min)
 670                 return n->second;
 671         else
 672                 return NULL;
 673 }
 674
 675 ClientState ClientInterface::getClientState(u16 peer_id)
 676 {
 677         JMutexAutoLock clientslock(m_clients_mutex);
 678         std::map<u16, RemoteClient*>::iterator n;
 679         n = m_clients.find(peer_id);
 680         // The client may not exist; clients are immediately removed if their
 681         // access is denied, and this event occurs later then.
 682         if(n == m_clients.end())
 683                 return Invalid;
 684
 685         return n->second->getState();
 686 }
 687
 688 void ClientInterface::setPlayerName(u16 peer_id,std::string name)
 689 {
 690         JMutexAutoLock clientslock(m_clients_mutex);
 691         std::map<u16, RemoteClient*>::iterator n;
 692         n = m_clients.find(peer_id);
 693         // The client may not exist; clients are immediately removed if their
 694         // access is denied, and this event occurs later then.
 695         if(n != m_clients.end())
 696                 n->second->setName(name);
 697 }
 698
 699 void ClientInterface::DeleteClient(u16 peer_id)
 700 {
 701         JMutexAutoLock conlock(m_clients_mutex);
 702
 703         // Error check
 704         std::map<u16, RemoteClient*>::iterator n;
 705         n = m_clients.find(peer_id);
 706         // The client may not exist; clients are immediately removed if their
 707         // access is denied, and this event occurs later then.
 708         if(n == m_clients.end())
 709                 return;
 710
 711         /*
 712                 Mark objects to be not known by the client
 713         */
 714         //TODO this should be done by client destructor!!!
 715         RemoteClient *client = n->second;
 716         // Handle objects
 717         for(std::set<u16>::iterator
 718                         i = client->m_known_objects.begin();
 719                         i != client->m_known_objects.end(); ++i)
 720         {
 721                 // Get object
 722                 u16 id = *i;
 723                 ServerActiveObject* obj = m_env->getActiveObject(id);
 724
 725                 if(obj && obj->m_known_by_count > 0)
 726                         obj->m_known_by_count--;
 727         }
 728
 729         // Delete client
 730         delete m_clients[peer_id];
 731         m_clients.erase(peer_id);
 732 }
 733
 734 void ClientInterface::CreateClient(u16 peer_id)
 735 {
 736         JMutexAutoLock conlock(m_clients_mutex);
 737
 738         // Error check
 739         std::map<u16, RemoteClient*>::iterator n;
 740         n = m_clients.find(peer_id);
 741         // The client shouldn't already exist
 742         if(n != m_clients.end()) return;
 743
 744         // Create client
 745         RemoteClient *client = new RemoteClient();
 746         client->peer_id = peer_id;
 747         m_clients[client->peer_id] = client;
 748 }
 749
 750 void ClientInterface::event(u16 peer_id, ClientStateEvent event)
 751 {
 752         {
 753                 JMutexAutoLock clientlock(m_clients_mutex);
 754
 755                 // Error check
 756                 std::map<u16, RemoteClient*>::iterator n;
 757                 n = m_clients.find(peer_id);
 758
 759                 // No client to deliver event
 760                 if (n == m_clients.end())
 761                         return;
 762                 n->second->notifyEvent(event);
 763         }
 764
 765         if ((event == SetClientReady) || (event == Disconnect) || (event == SetDenied))
 766         {
 767                 UpdatePlayerList();
 768         }
 769 }
 770
 771 u16 ClientInterface::getProtocolVersion(u16 peer_id)
 772 {
 773         JMutexAutoLock conlock(m_clients_mutex);
 774
 775         // Error check
 776         std::map<u16, RemoteClient*>::iterator n;
 777         n = m_clients.find(peer_id);
 778
 779         // No client to get version
 780         if (n == m_clients.end())
 781                 return 0;
 782
 783         return n->second->net_proto_version;
 784 }
 785
 786 void ClientInterface::setClientVersion(u16 peer_id, u8 major, u8 minor, u8 patch, std::string full)
 787 {
 788         JMutexAutoLock conlock(m_clients_mutex);
 789
 790         // Error check
 791         std::map<u16, RemoteClient*>::iterator n;
 792         n = m_clients.find(peer_id);
 793
 794         // No client to set versions
 795         if (n == m_clients.end())
 796                 return;
 797
 798         n->second->setVersionInfo(major,minor,patch,full);
 799 }