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