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 "util/numeric.h"
  24 #include "util/mathconstants.h"
  25 #include "player.h"
  26 #include "settings.h"
  27 #include "mapblock.h"
  28 #include "connection.h"
  29 #include "environment.h"
  30 #include "map.h"
  31 #include "emerge.h"
  32 #include "serverobject.h"              // TODO this is used for cleanup of only
  33 #include "main.h"                      // for g_settings
  34 #include "log.h"
  35
  36 const char *ClientInterface::statenames[] = {
  37         "Invalid",
  38         "Disconnecting",
  39         "Denied",
  40         "Created",
  41         "InitSent",
  42         "InitDone",
  43         "DefinitionsSent",
  44         "Active"
  45 };
  46
  47
  48
  49 std::string ClientInterface::state2Name(ClientState state)
  50 {
  51         return statenames[state];
  52 }
  53
  54 void RemoteClient::ResendBlockIfOnWire(v3s16 p)
  55 {
  56         // if this block is on wire, mark it for sending again as soon as possible
  57         if (m_blocks_sending.find(p) != m_blocks_sending.end()) {
  58                 SetBlockNotSent(p);
  59         }
  60 }
  61
  62 void RemoteClient::GetNextBlocks(
  63                 ServerEnvironment *env,
  64                 EmergeManager * emerge,
  65                 float dtime,
  66                 std::vector<PrioritySortedBlockTransfer> &dest)
  67 {
  68         DSTACK(__FUNCTION_NAME);
  69
  70
  71         // Increment timers
  72         m_nothing_to_send_pause_timer -= dtime;
  73         m_nearest_unsent_reset_timer += dtime;
  74
  75         if(m_nothing_to_send_pause_timer >= 0)
  76                 return;
  77
  78         Player *player = env->getPlayer(peer_id);
  79         // This can happen sometimes; clients and players are not in perfect sync.
  80         if(player == NULL)
  81                 return;
  82
  83         // Won't send anything if already sending
  84         if(m_blocks_sending.size() >= g_settings->getU16
  85                         ("max_simultaneous_block_sends_per_client"))
  86         {
  87                 //infostream<<"Not sending any blocks, Queue full."<<std::endl;
  88                 return;
  89         }
  90
  91         v3f playerpos = player->getPosition();
  92         v3f playerspeed = player->getSpeed();
  93         v3f playerspeeddir(0,0,0);
  94         if(playerspeed.getLength() > 1.0*BS)
  95                 playerspeeddir = playerspeed / playerspeed.getLength();
  96         // Predict to next block
  97         v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
  98
  99         v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
 100
 101         v3s16 center = getNodeBlockPos(center_nodepos);
 102
 103         // Camera position and direction
 104         v3f camera_pos = player->getEyePosition();
 105         v3f camera_dir = v3f(0,0,1);
 106         camera_dir.rotateYZBy(player->getPitch());
 107         camera_dir.rotateXZBy(player->getYaw());
 108
 109         /*infostream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
 110                         <<camera_dir.Z<<")"<<std::endl;*/
 111
 112         /*
 113                 Get the starting value of the block finder radius.
 114         */
 115
 116         if(m_last_center != center)
 117         {
 118                 m_nearest_unsent_d = 0;
 119                 m_last_center = center;
 120         }
 121
 122         /*infostream<<"m_nearest_unsent_reset_timer="
 123                         <<m_nearest_unsent_reset_timer<<std::endl;*/
 124
 125         // Reset periodically to workaround for some bugs or stuff
 126         if(m_nearest_unsent_reset_timer > 20.0)
 127         {
 128                 m_nearest_unsent_reset_timer = 0;
 129                 m_nearest_unsent_d = 0;
 130                 //infostream<<"Resetting m_nearest_unsent_d for "
 131                 //              <<server->getPlayerName(peer_id)<<std::endl;
 132         }
 133
 134         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 135         s16 d_start = m_nearest_unsent_d;
 136
 137         //infostream<<"d_start="<<d_start<<std::endl;
 138
 139         u16 max_simul_sends_setting = g_settings->getU16
 140                         ("max_simultaneous_block_sends_per_client");
 141         u16 max_simul_sends_usually = max_simul_sends_setting;
 142
 143         /*
 144                 Check the time from last addNode/removeNode.
 145
 146                 Decrease send rate if player is building stuff.
 147         */
 148         m_time_from_building += dtime;
 149         if(m_time_from_building < g_settings->getFloat(
 150                                 "full_block_send_enable_min_time_from_building"))
 151         {
 152                 max_simul_sends_usually
 153                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 154         }
 155
 156         /*
 157                 Number of blocks sending + number of blocks selected for sending
 158         */
 159         u32 num_blocks_selected = m_blocks_sending.size();
 160
 161         /*
 162                 next time d will be continued from the d from which the nearest
 163                 unsent block was found this time.
 164
 165                 This is because not necessarily any of the blocks found this
 166                 time are actually sent.
 167         */
 168         s32 new_nearest_unsent_d = -1;
 169
 170         const s16 full_d_max = g_settings->getS16("max_block_send_distance");
 171         s16 d_max = full_d_max;
 172         s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
 173
 174         // Don't loop very much at a time
 175         s16 max_d_increment_at_time = 2;
 176         if(d_max > d_start + max_d_increment_at_time)
 177                 d_max = d_start + max_d_increment_at_time;
 178
 179         s32 nearest_emerged_d = -1;
 180         s32 nearest_emergefull_d = -1;
 181         s32 nearest_sent_d = -1;
 182         bool queue_is_full = false;
 183
 184         s16 d;
 185         for(d = d_start; d <= d_max; d++)
 186         {
 187                 /*
 188                         Get the border/face dot coordinates of a "d-radiused"
 189                         box
 190                 */
 191                 std::list<v3s16> list;
 192                 getFacePositions(list, d);
 193
 194                 std::list<v3s16>::iterator li;
 195                 for(li=list.begin(); li!=list.end(); ++li)
 196                 {
 197                         v3s16 p = *li + center;
 198
 199                         /*
 200                                 Send throttling
 201                                 - Don't allow too many simultaneous transfers
 202                                 - EXCEPT when the blocks are very close
 203
 204                                 Also, don't send blocks that are already flying.
 205                         */
 206
 207                         // Start with the usual maximum
 208                         u16 max_simul_dynamic = max_simul_sends_usually;
 209
 210                         // If block is very close, allow full maximum
 211                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 212                                 max_simul_dynamic = max_simul_sends_setting;
 213
 214                         // Don't select too many blocks for sending
 215                         if(num_blocks_selected >= max_simul_dynamic)
 216                         {
 217                                 queue_is_full = true;
 218                                 goto queue_full_break;
 219                         }
 220
 221                         // Don't send blocks that are currently being transferred
 222                         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 223                                 continue;
 224
 225                         /*
 226                                 Do not go over-limit
 227                         */
 228                         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 229                         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 230                         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 231                         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 232                         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 233                         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 234                                 continue;
 235
 236                         // If this is true, inexistent block will be made from scratch
 237                         bool generate = d <= d_max_gen;
 238
 239                         {
 240                                 /*// Limit the generating area vertically to 2/3
 241                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 242                                         generate = false;*/
 243
 244                                 // Limit the send area vertically to 1/2
 245                                 if(abs(p.Y - center.Y) > full_d_max / 2)
 246                                         continue;
 247                         }
 248
 249                         /*
 250                                 Don't generate or send if not in sight
 251                                 FIXME This only works if the client uses a small enough
 252                                 FOV setting. The default of 72 degrees is fine.
 253                         */
 254
 255                         float camera_fov = (72.0*M_PI/180) * 4./3.;
 256                         if(isBlockInSight(p, camera_pos, camera_dir, camera_fov, 10000*BS) == false)
 257                         {
 258                                 continue;
 259                         }
 260
 261                         /*
 262                                 Don't send already sent blocks
 263                         */
 264                         {
 265                                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 266                                 {
 267                                         continue;
 268                                 }
 269                         }
 270
 271                         /*
 272                                 Check if map has this block
 273                         */
 274                         MapBlock *block = env->getMap().getBlockNoCreateNoEx(p);
 275
 276                         bool surely_not_found_on_disk = false;
 277                         bool block_is_invalid = false;
 278                         if(block != NULL)
 279                         {
 280                                 // Reset usage timer, this block will be of use in the future.
 281                                 block->resetUsageTimer();
 282
 283                                 // Block is dummy if data doesn't exist.
 284                                 // It means it has been not found from disk and not generated
 285                                 if(block->isDummy())
 286                                 {
 287                                         surely_not_found_on_disk = true;
 288                                 }
 289
 290                                 // Block is valid if lighting is up-to-date and data exists
 291                                 if(block->isValid() == false)
 292                                 {
 293                                         block_is_invalid = true;
 294                                 }
 295
 296                                 if(block->isGenerated() == false)
 297                                         block_is_invalid = true;
 298
 299                                 /*
 300                                         If block is not close, don't send it unless it is near
 301                                         ground level.
 302
 303                                         Block is near ground level if night-time mesh
 304                                         differs from day-time mesh.
 305                                 */
 306                                 if(d >= 4)
 307                                 {
 308                                         if(block->getDayNightDiff() == false)
 309                                                 continue;
 310                                 }
 311                         }
 312
 313                         /*
 314                                 If block has been marked to not exist on disk (dummy)
 315                                 and generating new ones is not wanted, skip block.
 316                         */
 317                         if(generate == false && surely_not_found_on_disk == true)
 318                         {
 319                                 // get next one.
 320                                 continue;
 321                         }
 322
 323                         /*
 324                                 Add inexistent block to emerge queue.
 325                         */
 326                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 327                         {
 328                                 if (emerge->enqueueBlockEmerge(peer_id, p, generate)) {
 329                                         if (nearest_emerged_d == -1)
 330                                                 nearest_emerged_d = d;
 331                                 } else {
 332                                         if (nearest_emergefull_d == -1)
 333                                                 nearest_emergefull_d = d;
 334                                         goto queue_full_break;
 335                                 }
 336
 337                                 // get next one.
 338                                 continue;
 339                         }
 340
 341                         if(nearest_sent_d == -1)
 342                                 nearest_sent_d = d;
 343
 344                         /*
 345                                 Add block to send queue
 346                         */
 347                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 348
 349                         dest.push_back(q);
 350
 351                         num_blocks_selected += 1;
 352                 }
 353         }
 354 queue_full_break:
 355
 356         // If nothing was found for sending and nothing was queued for
 357         // emerging, continue next time browsing from here
 358         if(nearest_emerged_d != -1){
 359                 new_nearest_unsent_d = nearest_emerged_d;
 360         } else if(nearest_emergefull_d != -1){
 361                 new_nearest_unsent_d = nearest_emergefull_d;
 362         } else {
 363                 if(d > g_settings->getS16("max_block_send_distance")){
 364                         new_nearest_unsent_d = 0;
 365                         m_nothing_to_send_pause_timer = 2.0;
 366                 } else {
 367                         if(nearest_sent_d != -1)
 368                                 new_nearest_unsent_d = nearest_sent_d;
 369                         else
 370                                 new_nearest_unsent_d = d;
 371                 }
 372         }
 373
 374         if(new_nearest_unsent_d != -1)
 375                 m_nearest_unsent_d = new_nearest_unsent_d;
 376 }
 377
 378 void RemoteClient::GotBlock(v3s16 p)
 379 {
 380         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 381                 m_blocks_sending.erase(p);
 382         else
 383         {
 384                 m_excess_gotblocks++;
 385         }
 386         m_blocks_sent.insert(p);
 387 }
 388
 389 void RemoteClient::SentBlock(v3s16 p)
 390 {
 391         if(m_blocks_sending.find(p) == m_blocks_sending.end())
 392                 m_blocks_sending[p] = 0.0;
 393         else
 394                 infostream<<"RemoteClient::SentBlock(): Sent block"
 395                                 " already in m_blocks_sending"<<std::endl;
 396 }
 397
 398 void RemoteClient::SetBlockNotSent(v3s16 p)
 399 {
 400         m_nearest_unsent_d = 0;
 401
 402         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 403                 m_blocks_sending.erase(p);
 404         if(m_blocks_sent.find(p) != m_blocks_sent.end())
 405                 m_blocks_sent.erase(p);
 406 }
 407
 408 void RemoteClient::SetBlocksNotSent(std::map<v3s16, MapBlock*> &blocks)
 409 {
 410         m_nearest_unsent_d = 0;
 411
 412         for(std::map<v3s16, MapBlock*>::iterator
 413                         i = blocks.begin();
 414                         i != blocks.end(); ++i)
 415         {
 416                 v3s16 p = i->first;
 417
 418                 if(m_blocks_sending.find(p) != m_blocks_sending.end())
 419                         m_blocks_sending.erase(p);
 420                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 421                         m_blocks_sent.erase(p);
 422         }
 423 }
 424
 425 void RemoteClient::notifyEvent(ClientStateEvent event)
 426 {
 427         std::ostringstream myerror;
 428         switch (m_state)
 429         {
 430         case CS_Invalid:
 431                 //intentionally do nothing
 432                 break;
 433         case CS_Created:
 434                 switch(event)
 435                 {
 436                 case CSE_Init:
 437                         m_state = CS_InitSent;
 438                         break;
 439                 case CSE_Disconnect:
 440                         m_state = CS_Disconnecting;
 441                         break;
 442                 case CSE_SetDenied:
 443                         m_state = CS_Denied;
 444                         break;
 445                 /* GotInit2 SetDefinitionsSent SetMediaSent */
 446                 default:
 447                         myerror << "Created: Invalid client state transition! " << event;
 448                         throw ClientStateError(myerror.str());
 449                 }
 450                 break;
 451         case CS_Denied:
 452                 /* don't do anything if in denied state */
 453                 break;
 454         case CS_InitSent:
 455                 switch(event)
 456                 {
 457                 case CSE_GotInit2:
 458                         confirmSerializationVersion();
 459                         m_state = CS_InitDone;
 460                         break;
 461                 case CSE_Disconnect:
 462                         m_state = CS_Disconnecting;
 463                         break;
 464                 case CSE_SetDenied:
 465                         m_state = CS_Denied;
 466                         break;
 467
 468                 /* Init SetDefinitionsSent SetMediaSent */
 469                 default:
 470                         myerror << "InitSent: Invalid client state transition! " << event;
 471                         throw ClientStateError(myerror.str());
 472                 }
 473                 break;
 474
 475         case CS_InitDone:
 476                 switch(event)
 477                 {
 478                 case CSE_SetDefinitionsSent:
 479                         m_state = CS_DefinitionsSent;
 480                         break;
 481                 case CSE_Disconnect:
 482                         m_state = CS_Disconnecting;
 483                         break;
 484                 case CSE_SetDenied:
 485                         m_state = CS_Denied;
 486                         break;
 487
 488                 /* Init GotInit2 SetMediaSent */
 489                 default:
 490                         myerror << "InitDone: Invalid client state transition! " << event;
 491                         throw ClientStateError(myerror.str());
 492                 }
 493                 break;
 494         case CS_DefinitionsSent:
 495                 switch(event)
 496                 {
 497                 case CSE_SetClientReady:
 498                         m_state = CS_Active;
 499                         break;
 500                 case CSE_Disconnect:
 501                         m_state = CS_Disconnecting;
 502                         break;
 503                 case CSE_SetDenied:
 504                         m_state = CS_Denied;
 505                         break;
 506                 /* Init GotInit2 SetDefinitionsSent */
 507                 default:
 508                         myerror << "DefinitionsSent: Invalid client state transition! " << event;
 509                         throw ClientStateError(myerror.str());
 510                 }
 511                 break;
 512         case CS_Active:
 513                 switch(event)
 514                 {
 515                 case CSE_SetDenied:
 516                         m_state = CS_Denied;
 517                         break;
 518                 case CSE_Disconnect:
 519                         m_state = CS_Disconnecting;
 520                         break;
 521                 /* Init GotInit2 SetDefinitionsSent SetMediaSent SetDenied */
 522                 default:
 523                         myerror << "Active: Invalid client state transition! " << event;
 524                         throw ClientStateError(myerror.str());
 525                         break;
 526                 }
 527                 break;
 528         case CS_Disconnecting:
 529                 /* we are already disconnecting */
 530                 break;
 531         }
 532 }
 533
 534 u32 RemoteClient::uptime()
 535 {
 536         return getTime(PRECISION_SECONDS) - m_connection_time;
 537 }
 538
 539 ClientInterface::ClientInterface(con::Connection* con)
 540 :
 541         m_con(con),
 542         m_env(NULL),
 543         m_print_info_timer(0.0)
 544 {
 545
 546 }
 547 ClientInterface::~ClientInterface()
 548 {
 549         /*
 550                 Delete clients
 551         */
 552         {
 553                 JMutexAutoLock clientslock(m_clients_mutex);
 554
 555                 for(std::map<u16, RemoteClient*>::iterator
 556                         i = m_clients.begin();
 557                         i != m_clients.end(); ++i)
 558                 {
 559
 560                         // Delete client
 561                         delete i->second;
 562                 }
 563         }
 564 }
 565
 566 std::list<u16> ClientInterface::getClientIDs(ClientState min_state)
 567 {
 568         std::list<u16> reply;
 569         JMutexAutoLock clientslock(m_clients_mutex);
 570
 571         for(std::map<u16, RemoteClient*>::iterator
 572                 i = m_clients.begin();
 573                 i != m_clients.end(); ++i)
 574         {
 575                 if (i->second->getState() >= min_state)
 576                         reply.push_back(i->second->peer_id);
 577         }
 578
 579         return reply;
 580 }
 581
 582 std::vector<std::string> ClientInterface::getPlayerNames()
 583 {
 584         return m_clients_names;
 585 }
 586
 587
 588 void ClientInterface::step(float dtime)
 589 {
 590         m_print_info_timer += dtime;
 591         if(m_print_info_timer >= 30.0)
 592         {
 593                 m_print_info_timer = 0.0;
 594                 UpdatePlayerList();
 595         }
 596 }
 597
 598 void ClientInterface::UpdatePlayerList()
 599 {
 600         if (m_env != NULL)
 601                 {
 602                 std::list<u16> clients = getClientIDs();
 603                 m_clients_names.clear();
 604
 605
 606                 if(!clients.empty())
 607                         infostream<<"Players:"<<std::endl;
 608                 for(std::list<u16>::iterator
 609                         i = clients.begin();
 610                         i != clients.end(); ++i)
 611                 {
 612                         Player *player = m_env->getPlayer(*i);
 613                         if(player==NULL)
 614                                 continue;
 615                         infostream<<"* "<<player->getName()<<"\t";
 616
 617                         {
 618                                 JMutexAutoLock clientslock(m_clients_mutex);
 619                                 RemoteClient* client = lockedGetClientNoEx(*i);
 620                                 if(client != NULL)
 621                                         client->PrintInfo(infostream);
 622                         }
 623                         m_clients_names.push_back(player->getName());
 624                 }
 625         }
 626 }
 627
 628 void ClientInterface::send(u16 peer_id,u8 channelnum,
 629                 SharedBuffer<u8> data, bool reliable)
 630 {
 631         m_con->Send(peer_id, channelnum, data, reliable);
 632 }
 633
 634 void ClientInterface::sendToAll(u16 channelnum,
 635                 SharedBuffer<u8> data, bool reliable)
 636 {
 637         JMutexAutoLock clientslock(m_clients_mutex);
 638         for(std::map<u16, RemoteClient*>::iterator
 639                 i = m_clients.begin();
 640                 i != m_clients.end(); ++i)
 641         {
 642                 RemoteClient *client = i->second;
 643
 644                 if (client->net_proto_version != 0)
 645                 {
 646                         m_con->Send(client->peer_id, channelnum, data, reliable);
 647                 }
 648         }
 649 }
 650
 651 RemoteClient* ClientInterface::getClientNoEx(u16 peer_id, ClientState state_min)
 652 {
 653         JMutexAutoLock clientslock(m_clients_mutex);
 654         std::map<u16, RemoteClient*>::iterator n;
 655         n = m_clients.find(peer_id);
 656         // The client may not exist; clients are immediately removed if their
 657         // access is denied, and this event occurs later then.
 658         if(n == m_clients.end())
 659                 return NULL;
 660
 661         if (n->second->getState() >= state_min)
 662                 return n->second;
 663         else
 664                 return NULL;
 665 }
 666
 667 RemoteClient* ClientInterface::lockedGetClientNoEx(u16 peer_id, ClientState state_min)
 668 {
 669         std::map<u16, RemoteClient*>::iterator n;
 670         n = m_clients.find(peer_id);
 671         // The client may not exist; clients are immediately removed if their
 672         // access is denied, and this event occurs later then.
 673         if(n == m_clients.end())
 674                 return NULL;
 675
 676         if (n->second->getState() >= state_min)
 677                 return n->second;
 678         else
 679                 return NULL;
 680 }
 681
 682 ClientState ClientInterface::getClientState(u16 peer_id)
 683 {
 684         JMutexAutoLock clientslock(m_clients_mutex);
 685         std::map<u16, RemoteClient*>::iterator n;
 686         n = m_clients.find(peer_id);
 687         // The client may not exist; clients are immediately removed if their
 688         // access is denied, and this event occurs later then.
 689         if(n == m_clients.end())
 690                 return CS_Invalid;
 691
 692         return n->second->getState();
 693 }
 694
 695 void ClientInterface::setPlayerName(u16 peer_id,std::string name)
 696 {
 697         JMutexAutoLock clientslock(m_clients_mutex);
 698         std::map<u16, RemoteClient*>::iterator n;
 699         n = m_clients.find(peer_id);
 700         // The client may not exist; clients are immediately removed if their
 701         // access is denied, and this event occurs later then.
 702         if(n != m_clients.end())
 703                 n->second->setName(name);
 704 }
 705
 706 void ClientInterface::DeleteClient(u16 peer_id)
 707 {
 708         JMutexAutoLock conlock(m_clients_mutex);
 709
 710         // Error check
 711         std::map<u16, RemoteClient*>::iterator n;
 712         n = m_clients.find(peer_id);
 713         // The client may not exist; clients are immediately removed if their
 714         // access is denied, and this event occurs later then.
 715         if(n == m_clients.end())
 716                 return;
 717
 718         /*
 719                 Mark objects to be not known by the client
 720         */
 721         //TODO this should be done by client destructor!!!
 722         RemoteClient *client = n->second;
 723         // Handle objects
 724         for(std::set<u16>::iterator
 725                         i = client->m_known_objects.begin();
 726                         i != client->m_known_objects.end(); ++i)
 727         {
 728                 // Get object
 729                 u16 id = *i;
 730                 ServerActiveObject* obj = m_env->getActiveObject(id);
 731
 732                 if(obj && obj->m_known_by_count > 0)
 733                         obj->m_known_by_count--;
 734         }
 735
 736         // Delete client
 737         delete m_clients[peer_id];
 738         m_clients.erase(peer_id);
 739 }
 740
 741 void ClientInterface::CreateClient(u16 peer_id)
 742 {
 743         JMutexAutoLock conlock(m_clients_mutex);
 744
 745         // Error check
 746         std::map<u16, RemoteClient*>::iterator n;
 747         n = m_clients.find(peer_id);
 748         // The client shouldn't already exist
 749         if(n != m_clients.end()) return;
 750
 751         // Create client
 752         RemoteClient *client = new RemoteClient();
 753         client->peer_id = peer_id;
 754         m_clients[client->peer_id] = client;
 755 }
 756
 757 void ClientInterface::event(u16 peer_id, ClientStateEvent event)
 758 {
 759         {
 760                 JMutexAutoLock clientlock(m_clients_mutex);
 761
 762                 // Error check
 763                 std::map<u16, RemoteClient*>::iterator n;
 764                 n = m_clients.find(peer_id);
 765
 766                 // No client to deliver event
 767                 if (n == m_clients.end())
 768                         return;
 769                 n->second->notifyEvent(event);
 770         }
 771
 772         if ((event == CSE_SetClientReady) ||
 773                 (event == CSE_Disconnect)     ||
 774                 (event == CSE_SetDenied))
 775         {
 776                 UpdatePlayerList();
 777         }
 778 }
 779
 780 u16 ClientInterface::getProtocolVersion(u16 peer_id)
 781 {
 782         JMutexAutoLock conlock(m_clients_mutex);
 783
 784         // Error check
 785         std::map<u16, RemoteClient*>::iterator n;
 786         n = m_clients.find(peer_id);
 787
 788         // No client to get version
 789         if (n == m_clients.end())
 790                 return 0;
 791
 792         return n->second->net_proto_version;
 793 }
 794
 795 void ClientInterface::setClientVersion(u16 peer_id, u8 major, u8 minor, u8 patch, std::string full)
 796 {
 797         JMutexAutoLock conlock(m_clients_mutex);
 798
 799         // Error check
 800         std::map<u16, RemoteClient*>::iterator n;
 801         n = m_clients.find(peer_id);
 802
 803         // No client to set versions
 804         if (n == m_clients.end())
 805                 return;
 806
 807         n->second->setVersionInfo(major,minor,patch,full);
 808 }