src/server.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "server.h"
  21 #include "utility.h"
  22 #include <iostream>
  23 #include "clientserver.h"
  24 #include "map.h"
  25 #include "jmutexautolock.h"
  26 #include "main.h"
  27 #include "constants.h"
  28 #include "voxel.h"
  29 #include "materials.h"
  30 #include "mineral.h"
  31 #include "config.h"
  32 #include "servercommand.h"
  33 #include "filesys.h"
  34 #include "content_mapnode.h"
  35 #include "content_craft.h"
  36 #include "content_nodemeta.h"
  37 #include "mapblock.h"
  38 #include "serverobject.h"
  39
  40 #define BLOCK_EMERGE_FLAG_FROMDISK (1<<0)
  41
  42 class MapEditEventIgnorer
  43 {
  44 public:
  45         MapEditEventIgnorer(bool *flag):
  46                 m_flag(flag)
  47         {
  48                 if(*m_flag == false)
  49                         *m_flag = true;
  50                 else
  51                         m_flag = NULL;
  52         }
  53
  54         ~MapEditEventIgnorer()
  55         {
  56                 if(m_flag)
  57                 {
  58                         assert(*m_flag);
  59                         *m_flag = false;
  60                 }
  61         }
  62
  63 private:
  64         bool *m_flag;
  65 };
  66
  67 void * ServerThread::Thread()
  68 {
  69         ThreadStarted();
  70
  71         DSTACK(__FUNCTION_NAME);
  72
  73         BEGIN_DEBUG_EXCEPTION_HANDLER
  74
  75         while(getRun())
  76         {
  77                 try{
  78                         //TimeTaker timer("AsyncRunStep() + Receive()");
  79
  80                         {
  81                                 //TimeTaker timer("AsyncRunStep()");
  82                                 m_server->AsyncRunStep();
  83                         }
  84
  85                         //dout_server<<"Running m_server->Receive()"<<std::endl;
  86                         m_server->Receive();
  87                 }
  88                 catch(con::NoIncomingDataException &e)
  89                 {
  90                 }
  91                 catch(con::PeerNotFoundException &e)
  92                 {
  93                         dout_server<<"Server: PeerNotFoundException"<<std::endl;
  94                 }
  95         }
  96
  97         END_DEBUG_EXCEPTION_HANDLER
  98
  99         return NULL;
 100 }
 101
 102 void * EmergeThread::Thread()
 103 {
 104         ThreadStarted();
 105
 106         DSTACK(__FUNCTION_NAME);
 107
 108         BEGIN_DEBUG_EXCEPTION_HANDLER
 109
 110         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
 111
 112         /*
 113                 Get block info from queue, emerge them and send them
 114                 to clients.
 115
 116                 After queue is empty, exit.
 117         */
 118         while(getRun())
 119         {
 120                 QueuedBlockEmerge *qptr = m_server->m_emerge_queue.pop();
 121                 if(qptr == NULL)
 122                         break;
 123
 124                 SharedPtr<QueuedBlockEmerge> q(qptr);
 125
 126                 v3s16 &p = q->pos;
 127                 v2s16 p2d(p.X,p.Z);
 128
 129                 /*
 130                         Do not generate over-limit
 131                 */
 132                 if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 133                 || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 134                 || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 135                 || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 136                 || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 137                 || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 138                         continue;
 139
 140                 //derr_server<<"EmergeThread::Thread(): running"<<std::endl;
 141
 142                 //TimeTaker timer("block emerge");
 143
 144                 /*
 145                         Try to emerge it from somewhere.
 146
 147                         If it is only wanted as optional, only loading from disk
 148                         will be allowed.
 149                 */
 150
 151                 /*
 152                         Check if any peer wants it as non-optional. In that case it
 153                         will be generated.
 154
 155                         Also decrement the emerge queue count in clients.
 156                 */
 157
 158                 bool only_from_disk = true;
 159
 160                 {
 161                         core::map<u16, u8>::Iterator i;
 162                         for(i=q->peer_ids.getIterator(); i.atEnd()==false; i++)
 163                         {
 164                                 //u16 peer_id = i.getNode()->getKey();
 165
 166                                 // Check flags
 167                                 u8 flags = i.getNode()->getValue();
 168                                 if((flags & BLOCK_EMERGE_FLAG_FROMDISK) == false)
 169                                         only_from_disk = false;
 170
 171                         }
 172                 }
 173
 174                 if(enable_mapgen_debug_info)
 175                         dstream<<"EmergeThread: p="
 176                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<") "
 177                                         <<"only_from_disk="<<only_from_disk<<std::endl;
 178
 179                 ServerMap &map = ((ServerMap&)m_server->m_env.getMap());
 180
 181                 //core::map<v3s16, MapBlock*> changed_blocks;
 182                 //core::map<v3s16, MapBlock*> lighting_invalidated_blocks;
 183
 184                 MapBlock *block = NULL;
 185                 bool got_block = true;
 186                 core::map<v3s16, MapBlock*> modified_blocks;
 187
 188                 /*
 189                         Fetch block from map or generate a single block
 190                 */
 191                 {
 192                         JMutexAutoLock envlock(m_server->m_env_mutex);
 193
 194                         // Load sector if it isn't loaded
 195                         if(map.getSectorNoGenerateNoEx(p2d) == NULL)
 196                                 //map.loadSectorFull(p2d);
 197                                 map.loadSectorMeta(p2d);
 198
 199                         block = map.getBlockNoCreateNoEx(p);
 200                         if(!block || block->isDummy() || !block->isGenerated())
 201                         {
 202                                 if(enable_mapgen_debug_info)
 203                                         dstream<<"EmergeThread: not in memory, loading"<<std::endl;
 204
 205                                 // Get, load or create sector
 206                                 /*ServerMapSector *sector =
 207                                                 (ServerMapSector*)map.createSector(p2d);*/
 208
 209                                 // Load/generate block
 210
 211                                 /*block = map.emergeBlock(p, sector, changed_blocks,
 212                                                 lighting_invalidated_blocks);*/
 213
 214                                 block = map.loadBlock(p);
 215
 216                                 if(only_from_disk == false)
 217                                 {
 218                                         if(block == NULL || block->isGenerated() == false)
 219                                         {
 220                                                 if(enable_mapgen_debug_info)
 221                                                         dstream<<"EmergeThread: generating"<<std::endl;
 222                                                 block = map.generateBlock(p, modified_blocks);
 223                                         }
 224                                 }
 225
 226                                 if(enable_mapgen_debug_info)
 227                                         dstream<<"EmergeThread: ended up with: "
 228                                                         <<analyze_block(block)<<std::endl;
 229
 230                                 if(block == NULL)
 231                                 {
 232                                         got_block = false;
 233                                 }
 234                                 else
 235                                 {
 236                                         /*
 237                                                 Ignore map edit events, they will not need to be
 238                                                 sent to anybody because the block hasn't been sent
 239                                                 to anybody
 240                                         */
 241                                         MapEditEventIgnorer ign(&m_server->m_ignore_map_edit_events);
 242
 243                                         // Activate objects and stuff
 244                                         m_server->m_env.activateBlock(block, 3600);
 245                                 }
 246                         }
 247                         else
 248                         {
 249                                 /*if(block->getLightingExpired()){
 250                                         lighting_invalidated_blocks[block->getPos()] = block;
 251                                 }*/
 252                         }
 253
 254                         // TODO: Some additional checking and lighting updating,
 255                         //       see emergeBlock
 256                 }
 257
 258                 {//envlock
 259                 JMutexAutoLock envlock(m_server->m_env_mutex);
 260
 261                 if(got_block)
 262                 {
 263                         /*
 264                                 Collect a list of blocks that have been modified in
 265                                 addition to the fetched one.
 266                         */
 267
 268 #if 0
 269                         if(lighting_invalidated_blocks.size() > 0)
 270                         {
 271                                 /*dstream<<"lighting "<<lighting_invalidated_blocks.size()
 272                                                 <<" blocks"<<std::endl;*/
 273
 274                                 // 50-100ms for single block generation
 275                                 //TimeTaker timer("** EmergeThread updateLighting");
 276
 277                                 // Update lighting without locking the environment mutex,
 278                                 // add modified blocks to changed blocks
 279                                 map.updateLighting(lighting_invalidated_blocks, modified_blocks);
 280                         }
 281
 282                         // Add all from changed_blocks to modified_blocks
 283                         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
 284                                         i.atEnd() == false; i++)
 285                         {
 286                                 MapBlock *block = i.getNode()->getValue();
 287                                 modified_blocks.insert(block->getPos(), block);
 288                         }
 289 #endif
 290                 }
 291                 // If we got no block, there should be no invalidated blocks
 292                 else
 293                 {
 294                         //assert(lighting_invalidated_blocks.size() == 0);
 295                 }
 296
 297                 }//envlock
 298
 299                 /*
 300                         Set sent status of modified blocks on clients
 301                 */
 302
 303                 // NOTE: Server's clients are also behind the connection mutex
 304                 JMutexAutoLock lock(m_server->m_con_mutex);
 305
 306                 /*
 307                         Add the originally fetched block to the modified list
 308                 */
 309                 if(got_block)
 310                 {
 311                         modified_blocks.insert(p, block);
 312                 }
 313
 314                 /*
 315                         Set the modified blocks unsent for all the clients
 316                 */
 317
 318                 for(core::map<u16, RemoteClient*>::Iterator
 319                                 i = m_server->m_clients.getIterator();
 320                                 i.atEnd() == false; i++)
 321                 {
 322                         RemoteClient *client = i.getNode()->getValue();
 323
 324                         if(modified_blocks.size() > 0)
 325                         {
 326                                 // Remove block from sent history
 327                                 client->SetBlocksNotSent(modified_blocks);
 328                         }
 329                 }
 330
 331         }
 332
 333         END_DEBUG_EXCEPTION_HANDLER
 334
 335         return NULL;
 336 }
 337
 338 void RemoteClient::GetNextBlocks(Server *server, float dtime,
 339                 core::array<PrioritySortedBlockTransfer> &dest)
 340 {
 341         DSTACK(__FUNCTION_NAME);
 342
 343         /*u32 timer_result;
 344         TimeTaker timer("RemoteClient::GetNextBlocks", &timer_result);*/
 345
 346         // Increment timers
 347         m_nothing_to_send_pause_timer -= dtime;
 348
 349         if(m_nothing_to_send_pause_timer >= 0)
 350         {
 351                 // Keep this reset
 352                 m_nearest_unsent_reset_timer = 0;
 353                 return;
 354         }
 355
 356         // Won't send anything if already sending
 357         if(m_blocks_sending.size() >= g_settings.getU16
 358                         ("max_simultaneous_block_sends_per_client"))
 359         {
 360                 //dstream<<"Not sending any blocks, Queue full."<<std::endl;
 361                 return;
 362         }
 363
 364         //TimeTaker timer("RemoteClient::GetNextBlocks");
 365
 366         Player *player = server->m_env.getPlayer(peer_id);
 367
 368         assert(player != NULL);
 369
 370         v3f playerpos = player->getPosition();
 371         v3f playerspeed = player->getSpeed();
 372         v3f playerspeeddir(0,0,0);
 373         if(playerspeed.getLength() > 1.0*BS)
 374                 playerspeeddir = playerspeed / playerspeed.getLength();
 375         // Predict to next block
 376         v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
 377
 378         v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
 379
 380         v3s16 center = getNodeBlockPos(center_nodepos);
 381
 382         // Camera position and direction
 383         v3f camera_pos =
 384                         playerpos + v3f(0, BS+BS/2, 0);
 385         v3f camera_dir = v3f(0,0,1);
 386         camera_dir.rotateYZBy(player->getPitch());
 387         camera_dir.rotateXZBy(player->getYaw());
 388
 389         /*dstream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
 390                         <<camera_dir.Z<<")"<<std::endl;*/
 391
 392         /*
 393                 Get the starting value of the block finder radius.
 394         */
 395
 396         if(m_last_center != center)
 397         {
 398                 m_nearest_unsent_d = 0;
 399                 m_last_center = center;
 400         }
 401
 402         /*dstream<<"m_nearest_unsent_reset_timer="
 403                         <<m_nearest_unsent_reset_timer<<std::endl;*/
 404
 405         // This has to be incremented only when the nothing to send pause
 406         // is not active
 407         m_nearest_unsent_reset_timer += dtime;
 408
 409         // Reset periodically to avoid possible bugs or other mishaps
 410         if(m_nearest_unsent_reset_timer > 10.0)
 411         {
 412                 m_nearest_unsent_reset_timer = 0;
 413                 m_nearest_unsent_d = 0;
 414                 /*dstream<<"Resetting m_nearest_unsent_d for "
 415                                 <<server->getPlayerName(peer_id)<<std::endl;*/
 416         }
 417
 418         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 419         s16 d_start = m_nearest_unsent_d;
 420
 421         //dstream<<"d_start="<<d_start<<std::endl;
 422
 423         u16 max_simul_sends_setting = g_settings.getU16
 424                         ("max_simultaneous_block_sends_per_client");
 425         u16 max_simul_sends_usually = max_simul_sends_setting;
 426
 427         /*
 428                 Check the time from last addNode/removeNode.
 429
 430                 Decrease send rate if player is building stuff.
 431         */
 432         m_time_from_building += dtime;
 433         if(m_time_from_building < g_settings.getFloat(
 434                                 "full_block_send_enable_min_time_from_building"))
 435         {
 436                 max_simul_sends_usually
 437                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 438         }
 439
 440         /*
 441                 Number of blocks sending + number of blocks selected for sending
 442         */
 443         u32 num_blocks_selected = m_blocks_sending.size();
 444
 445         /*
 446                 next time d will be continued from the d from which the nearest
 447                 unsent block was found this time.
 448
 449                 This is because not necessarily any of the blocks found this
 450                 time are actually sent.
 451         */
 452         s32 new_nearest_unsent_d = -1;
 453
 454         s16 d_max = g_settings.getS16("max_block_send_distance");
 455         s16 d_max_gen = g_settings.getS16("max_block_generate_distance");
 456
 457         // Don't loop very much at a time
 458         if(d_max > d_start+1)
 459                 d_max = d_start+1;
 460         /*if(d_max_gen > d_start+2)
 461                 d_max_gen = d_start+2;*/
 462
 463         //dstream<<"Starting from "<<d_start<<std::endl;
 464
 465         bool sending_something = false;
 466
 467         bool no_blocks_found_for_sending = true;
 468
 469         bool queue_is_full = false;
 470
 471         s16 d;
 472         for(d = d_start; d <= d_max; d++)
 473         {
 474                 //dstream<<"RemoteClient::SendBlocks(): d="<<d<<std::endl;
 475
 476                 /*
 477                         If m_nearest_unsent_d was changed by the EmergeThread
 478                         (it can change it to 0 through SetBlockNotSent),
 479                         update our d to it.
 480                         Else update m_nearest_unsent_d
 481                 */
 482                 /*if(m_nearest_unsent_d != last_nearest_unsent_d)
 483                 {
 484                         d = m_nearest_unsent_d;
 485                         last_nearest_unsent_d = m_nearest_unsent_d;
 486                 }*/
 487
 488                 /*
 489                         Get the border/face dot coordinates of a "d-radiused"
 490                         box
 491                 */
 492                 core::list<v3s16> list;
 493                 getFacePositions(list, d);
 494
 495                 core::list<v3s16>::Iterator li;
 496                 for(li=list.begin(); li!=list.end(); li++)
 497                 {
 498                         v3s16 p = *li + center;
 499
 500                         /*
 501                                 Send throttling
 502                                 - Don't allow too many simultaneous transfers
 503                                 - EXCEPT when the blocks are very close
 504
 505                                 Also, don't send blocks that are already flying.
 506                         */
 507
 508                         // Start with the usual maximum
 509                         u16 max_simul_dynamic = max_simul_sends_usually;
 510
 511                         // If block is very close, allow full maximum
 512                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 513                                 max_simul_dynamic = max_simul_sends_setting;
 514
 515                         // Don't select too many blocks for sending
 516                         if(num_blocks_selected >= max_simul_dynamic)
 517                         {
 518                                 queue_is_full = true;
 519                                 goto queue_full_break;
 520                         }
 521
 522                         // Don't send blocks that are currently being transferred
 523                         if(m_blocks_sending.find(p) != NULL)
 524                                 continue;
 525
 526                         /*
 527                                 Do not go over-limit
 528                         */
 529                         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 530                         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 531                         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 532                         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 533                         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 534                         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 535                                 continue;
 536
 537                         // If this is true, inexistent block will be made from scratch
 538                         bool generate = d <= d_max_gen;
 539
 540                         {
 541                                 /*// Limit the generating area vertically to 2/3
 542                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 543                                         generate = false;*/
 544
 545                                 // Limit the send area vertically to 2/3
 546                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 547                                         continue;
 548                         }
 549
 550 #if 1
 551                         /*
 552                                 If block is far away, don't generate it unless it is
 553                                 near ground level.
 554                         */
 555                         if(d >= 4)
 556                         {
 557         #if 1
 558                                 // Block center y in nodes
 559                                 f32 y = (f32)(p.Y * MAP_BLOCKSIZE + MAP_BLOCKSIZE/2);
 560                                 // Don't generate if it's very high or very low
 561                                 if(y < -64 || y > 64)
 562                                         generate = false;
 563         #endif
 564         #if 0
 565                                 v2s16 p2d_nodes_center(
 566                                         MAP_BLOCKSIZE*p.X,
 567                                         MAP_BLOCKSIZE*p.Z);
 568
 569                                 // Get ground height in nodes
 570                                 s16 gh = server->m_env.getServerMap().findGroundLevel(
 571                                                 p2d_nodes_center);
 572
 573                                 // If differs a lot, don't generate
 574                                 if(fabs(gh - y) > MAP_BLOCKSIZE*2)
 575                                         generate = false;
 576                                         // Actually, don't even send it
 577                                         //continue;
 578         #endif
 579                         }
 580 #endif
 581
 582                         //dstream<<"d="<<d<<std::endl;
 583
 584                         /*
 585                                 Don't generate or send if not in sight
 586                         */
 587
 588                         if(isBlockInSight(p, camera_pos, camera_dir, 10000*BS) == false)
 589                         {
 590                                 continue;
 591                         }
 592
 593                         /*
 594                                 Don't send already sent blocks
 595                         */
 596                         {
 597                                 if(m_blocks_sent.find(p) != NULL)
 598                                 {
 599                                         continue;
 600                                 }
 601                         }
 602
 603                         /*
 604                                 Check if map has this block
 605                         */
 606                         MapBlock *block = server->m_env.getMap().getBlockNoCreateNoEx(p);
 607
 608                         bool surely_not_found_on_disk = false;
 609                         bool block_is_invalid = false;
 610                         if(block != NULL)
 611                         {
 612                                 // Reset usage timer, this block will be of use in the future.
 613                                 block->resetUsageTimer();
 614
 615                                 // Block is dummy if data doesn't exist.
 616                                 // It means it has been not found from disk and not generated
 617                                 if(block->isDummy())
 618                                 {
 619                                         surely_not_found_on_disk = true;
 620                                 }
 621
 622                                 // Block is valid if lighting is up-to-date and data exists
 623                                 if(block->isValid() == false)
 624                                 {
 625                                         block_is_invalid = true;
 626                                 }
 627
 628                                 /*if(block->isFullyGenerated() == false)
 629                                 {
 630                                         block_is_invalid = true;
 631                                 }*/
 632
 633 #if 0
 634                                 v2s16 p2d(p.X, p.Z);
 635                                 ServerMap *map = (ServerMap*)(&server->m_env.getMap());
 636                                 v2s16 chunkpos = map->sector_to_chunk(p2d);
 637                                 if(map->chunkNonVolatile(chunkpos) == false)
 638                                         block_is_invalid = true;
 639 #endif
 640                                 if(block->isGenerated() == false)
 641                                         block_is_invalid = true;
 642 #if 1
 643                                 /*
 644                                         If block is not close, don't send it unless it is near
 645                                         ground level.
 646
 647                                         Block is near ground level if night-time mesh
 648                                         differs from day-time mesh.
 649                                 */
 650                                 if(d > 3)
 651                                 {
 652                                         if(block->dayNightDiffed() == false)
 653                                                 continue;
 654                                 }
 655 #endif
 656                         }
 657
 658                         /*
 659                                 If block has been marked to not exist on disk (dummy)
 660                                 and generating new ones is not wanted, skip block.
 661                         */
 662                         if(generate == false && surely_not_found_on_disk == true)
 663                         {
 664                                 // get next one.
 665                                 continue;
 666                         }
 667
 668                         /*
 669                                 Record the lowest d from which a block has been
 670                                 found being not sent and possibly to exist
 671                         */
 672                         if(no_blocks_found_for_sending)
 673                         {
 674                                 if(generate == true)
 675                                         new_nearest_unsent_d = d;
 676                         }
 677
 678                         no_blocks_found_for_sending = false;
 679
 680                         /*
 681                                 Add inexistent block to emerge queue.
 682                         */
 683                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 684                         {
 685                                 //TODO: Get value from somewhere
 686                                 // Allow only one block in emerge queue
 687                                 //if(server->m_emerge_queue.peerItemCount(peer_id) < 1)
 688                                 // Allow two blocks in queue per client
 689                                 if(server->m_emerge_queue.peerItemCount(peer_id) < 2)
 690                                 {
 691                                         //dstream<<"Adding block to emerge queue"<<std::endl;
 692
 693                                         // Add it to the emerge queue and trigger the thread
 694
 695                                         u8 flags = 0;
 696                                         if(generate == false)
 697                                                 flags |= BLOCK_EMERGE_FLAG_FROMDISK;
 698
 699                                         server->m_emerge_queue.addBlock(peer_id, p, flags);
 700                                         server->m_emergethread.trigger();
 701                                 }
 702
 703                                 // get next one.
 704                                 continue;
 705                         }
 706
 707                         /*
 708                                 Add block to send queue
 709                         */
 710
 711                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 712
 713                         dest.push_back(q);
 714
 715                         num_blocks_selected += 1;
 716                         sending_something = true;
 717                 }
 718         }
 719 queue_full_break:
 720
 721         //dstream<<"Stopped at "<<d<<std::endl;
 722
 723         if(no_blocks_found_for_sending)
 724         {
 725                 if(queue_is_full == false)
 726                         new_nearest_unsent_d = d;
 727         }
 728
 729         if(new_nearest_unsent_d != -1)
 730                 m_nearest_unsent_d = new_nearest_unsent_d;
 731
 732         if(sending_something == false)
 733         {
 734                 m_nothing_to_send_counter++;
 735                 if((s16)m_nothing_to_send_counter >=
 736                                 g_settings.getS16("max_block_send_distance"))
 737                 {
 738                         // Pause time in seconds
 739                         m_nothing_to_send_pause_timer = 1.0;
 740                         /*dstream<<"nothing to send to "
 741                                         <<server->getPlayerName(peer_id)
 742                                         <<" (d="<<d<<")"<<std::endl;*/
 743                 }
 744         }
 745         else
 746         {
 747                 m_nothing_to_send_counter = 0;
 748         }
 749
 750         /*timer_result = timer.stop(true);
 751         if(timer_result != 0)
 752                 dstream<<"GetNextBlocks duration: "<<timer_result<<" (!=0)"<<std::endl;*/
 753 }
 754
 755 void RemoteClient::SendObjectData(
 756                 Server *server,
 757                 float dtime,
 758                 core::map<v3s16, bool> &stepped_blocks
 759         )
 760 {
 761         DSTACK(__FUNCTION_NAME);
 762
 763         // Can't send anything without knowing version
 764         if(serialization_version == SER_FMT_VER_INVALID)
 765         {
 766                 dstream<<"RemoteClient::SendObjectData(): Not sending, no version."
 767                                 <<std::endl;
 768                 return;
 769         }
 770
 771         /*
 772                 Send a TOCLIENT_OBJECTDATA packet.
 773                 Sent as unreliable.
 774
 775                 u16 command
 776                 u16 number of player positions
 777                 for each player:
 778                         v3s32 position*100
 779                         v3s32 speed*100
 780                         s32 pitch*100
 781                         s32 yaw*100
 782                 u16 count of blocks
 783                 for each block:
 784                         block objects
 785         */
 786
 787         std::ostringstream os(std::ios_base::binary);
 788         u8 buf[12];
 789
 790         // Write command
 791         writeU16(buf, TOCLIENT_OBJECTDATA);
 792         os.write((char*)buf, 2);
 793
 794         /*
 795                 Get and write player data
 796         */
 797
 798         // Get connected players
 799         core::list<Player*> players = server->m_env.getPlayers(true);
 800
 801         // Write player count
 802         u16 playercount = players.size();
 803         writeU16(buf, playercount);
 804         os.write((char*)buf, 2);
 805
 806         core::list<Player*>::Iterator i;
 807         for(i = players.begin();
 808                         i != players.end(); i++)
 809         {
 810                 Player *player = *i;
 811
 812                 v3f pf = player->getPosition();
 813                 v3f sf = player->getSpeed();
 814
 815                 v3s32 position_i(pf.X*100, pf.Y*100, pf.Z*100);
 816                 v3s32 speed_i   (sf.X*100, sf.Y*100, sf.Z*100);
 817                 s32   pitch_i   (player->getPitch() * 100);
 818                 s32   yaw_i     (player->getYaw() * 100);
 819
 820                 writeU16(buf, player->peer_id);
 821                 os.write((char*)buf, 2);
 822                 writeV3S32(buf, position_i);
 823                 os.write((char*)buf, 12);
 824                 writeV3S32(buf, speed_i);
 825                 os.write((char*)buf, 12);
 826                 writeS32(buf, pitch_i);
 827                 os.write((char*)buf, 4);
 828                 writeS32(buf, yaw_i);
 829                 os.write((char*)buf, 4);
 830         }
 831
 832         /*
 833                 Get and write object data
 834         */
 835
 836         /*
 837                 Get nearby blocks.
 838
 839                 For making players to be able to build to their nearby
 840                 environment (building is not possible on blocks that are not
 841                 in memory):
 842                 - Set blocks changed
 843                 - Add blocks to emerge queue if they are not found
 844
 845                 SUGGESTION: These could be ignored from the backside of the player
 846         */
 847
 848         Player *player = server->m_env.getPlayer(peer_id);
 849
 850         assert(player);
 851
 852         v3f playerpos = player->getPosition();
 853         v3f playerspeed = player->getSpeed();
 854
 855         v3s16 center_nodepos = floatToInt(playerpos, BS);
 856         v3s16 center = getNodeBlockPos(center_nodepos);
 857
 858         s16 d_max = g_settings.getS16("active_object_range");
 859
 860         // Number of blocks whose objects were written to bos
 861         u16 blockcount = 0;
 862
 863         std::ostringstream bos(std::ios_base::binary);
 864
 865         for(s16 d = 0; d <= d_max; d++)
 866         {
 867                 core::list<v3s16> list;
 868                 getFacePositions(list, d);
 869
 870                 core::list<v3s16>::Iterator li;
 871                 for(li=list.begin(); li!=list.end(); li++)
 872                 {
 873                         v3s16 p = *li + center;
 874
 875                         /*
 876                                 Ignore blocks that haven't been sent to the client
 877                         */
 878                         {
 879                                 if(m_blocks_sent.find(p) == NULL)
 880                                         continue;
 881                         }
 882
 883                         // Try stepping block and add it to a send queue
 884                         try
 885                         {
 886
 887                         // Get block
 888                         MapBlock *block = server->m_env.getMap().getBlockNoCreate(p);
 889
 890                         /*
 891                                 Step block if not in stepped_blocks and add to stepped_blocks.
 892                         */
 893                         if(stepped_blocks.find(p) == NULL)
 894                         {
 895                                 block->stepObjects(dtime, true, server->m_env.getDayNightRatio());
 896                                 stepped_blocks.insert(p, true);
 897                                 block->setChangedFlag();
 898                         }
 899
 900                         // Skip block if there are no objects
 901                         if(block->getObjectCount() == 0)
 902                                 continue;
 903
 904                         /*
 905                                 Write objects
 906                         */
 907
 908                         // Write blockpos
 909                         writeV3S16(buf, p);
 910                         bos.write((char*)buf, 6);
 911
 912                         // Write objects
 913                         //block->serializeObjects(bos, serialization_version); // DEPRECATED
 914                         // count=0
 915                         writeU16(bos, 0);
 916
 917                         blockcount++;
 918
 919                         /*
 920                                 Stop collecting objects if data is already too big
 921                         */
 922                         // Sum of player and object data sizes
 923                         s32 sum = (s32)os.tellp() + 2 + (s32)bos.tellp();
 924                         // break out if data too big
 925                         if(sum > MAX_OBJECTDATA_SIZE)
 926                         {
 927                                 goto skip_subsequent;
 928                         }
 929
 930                         } //try
 931                         catch(InvalidPositionException &e)
 932                         {
 933                                 // Not in memory
 934                                 // Add it to the emerge queue and trigger the thread.
 935                                 // Fetch the block only if it is on disk.
 936
 937                                 // Grab and increment counter
 938                                 /*SharedPtr<JMutexAutoLock> lock
 939                                                 (m_num_blocks_in_emerge_queue.getLock());
 940                                 m_num_blocks_in_emerge_queue.m_value++;*/
 941
 942                                 // Add to queue as an anonymous fetch from disk
 943                                 u8 flags = BLOCK_EMERGE_FLAG_FROMDISK;
 944                                 server->m_emerge_queue.addBlock(0, p, flags);
 945                                 server->m_emergethread.trigger();
 946                         }
 947                 }
 948         }
 949
 950 skip_subsequent:
 951
 952         // Write block count
 953         writeU16(buf, blockcount);
 954         os.write((char*)buf, 2);
 955
 956         // Write block objects
 957         os<<bos.str();
 958
 959         /*
 960                 Send data
 961         */
 962
 963         //dstream<<"Server: Sending object data to "<<peer_id<<std::endl;
 964
 965         // Make data buffer
 966         std::string s = os.str();
 967         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
 968         // Send as unreliable
 969         server->m_con.Send(peer_id, 0, data, false);
 970 }
 971
 972 void RemoteClient::GotBlock(v3s16 p)
 973 {
 974         if(m_blocks_sending.find(p) != NULL)
 975                 m_blocks_sending.remove(p);
 976         else
 977         {
 978                 /*dstream<<"RemoteClient::GotBlock(): Didn't find in"
 979                                 " m_blocks_sending"<<std::endl;*/
 980                 m_excess_gotblocks++;
 981         }
 982         m_blocks_sent.insert(p, true);
 983 }
 984
 985 void RemoteClient::SentBlock(v3s16 p)
 986 {
 987         if(m_blocks_sending.find(p) == NULL)
 988                 m_blocks_sending.insert(p, 0.0);
 989         else
 990                 dstream<<"RemoteClient::SentBlock(): Sent block"
 991                                 " already in m_blocks_sending"<<std::endl;
 992 }
 993
 994 void RemoteClient::SetBlockNotSent(v3s16 p)
 995 {
 996         m_nearest_unsent_d = 0;
 997
 998         if(m_blocks_sending.find(p) != NULL)
 999                 m_blocks_sending.remove(p);
1000         if(m_blocks_sent.find(p) != NULL)
1001                 m_blocks_sent.remove(p);
1002 }
1003
1004 void RemoteClient::SetBlocksNotSent(core::map<v3s16, MapBlock*> &blocks)
1005 {
1006         m_nearest_unsent_d = 0;
1007
1008         for(core::map<v3s16, MapBlock*>::Iterator
1009                         i = blocks.getIterator();
1010                         i.atEnd()==false; i++)
1011         {
1012                 v3s16 p = i.getNode()->getKey();
1013
1014                 if(m_blocks_sending.find(p) != NULL)
1015                         m_blocks_sending.remove(p);
1016                 if(m_blocks_sent.find(p) != NULL)
1017                         m_blocks_sent.remove(p);
1018         }
1019 }
1020
1021 /*
1022         PlayerInfo
1023 */
1024
1025 PlayerInfo::PlayerInfo()
1026 {
1027         name[0] = 0;
1028         avg_rtt = 0;
1029 }
1030
1031 void PlayerInfo::PrintLine(std::ostream *s)
1032 {
1033         (*s)<<id<<": ";
1034         (*s)<<"\""<<name<<"\" ("
1035                         <<(position.X/10)<<","<<(position.Y/10)
1036                         <<","<<(position.Z/10)<<") ";
1037         address.print(s);
1038         (*s)<<" avg_rtt="<<avg_rtt;
1039         (*s)<<std::endl;
1040 }
1041
1042 u32 PIChecksum(core::list<PlayerInfo> &l)
1043 {
1044         core::list<PlayerInfo>::Iterator i;
1045         u32 checksum = 1;
1046         u32 a = 10;
1047         for(i=l.begin(); i!=l.end(); i++)
1048         {
1049                 checksum += a * (i->id+1);
1050                 checksum ^= 0x435aafcd;
1051                 a *= 10;
1052         }
1053         return checksum;
1054 }
1055
1056 /*
1057         Server
1058 */
1059
1060 Server::Server(
1061                 std::string mapsavedir,
1062                 std::string configpath
1063         ):
1064         m_env(new ServerMap(mapsavedir), this),
1065         m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
1066         m_authmanager(mapsavedir+"/auth.txt"),
1067         m_thread(this),
1068         m_emergethread(this),
1069         m_time_counter(0),
1070         m_time_of_day_send_timer(0),
1071         m_uptime(0),
1072         m_mapsavedir(mapsavedir),
1073         m_configpath(configpath),
1074         m_shutdown_requested(false),
1075         m_ignore_map_edit_events(false),
1076         m_ignore_map_edit_events_peer_id(0)
1077 {
1078         m_liquid_transform_timer = 0.0;
1079         m_print_info_timer = 0.0;
1080         m_objectdata_timer = 0.0;
1081         m_emergethread_trigger_timer = 0.0;
1082         m_savemap_timer = 0.0;
1083
1084         m_env_mutex.Init();
1085         m_con_mutex.Init();
1086         m_step_dtime_mutex.Init();
1087         m_step_dtime = 0.0;
1088
1089         // Register us to receive map edit events
1090         m_env.getMap().addEventReceiver(this);
1091
1092         // If file exists, load environment metadata
1093         if(fs::PathExists(m_mapsavedir+"/env_meta.txt"))
1094         {
1095                 dstream<<"Server: Loading environment metadata"<<std::endl;
1096                 m_env.loadMeta(m_mapsavedir);
1097         }
1098
1099         // Load players
1100         dstream<<"Server: Loading players"<<std::endl;
1101         m_env.deSerializePlayers(m_mapsavedir);
1102 }
1103
1104 Server::~Server()
1105 {
1106         dstream<<"Server::~Server()"<<std::endl;
1107
1108         /*
1109                 Send shutdown message
1110         */
1111         {
1112                 JMutexAutoLock conlock(m_con_mutex);
1113
1114                 std::wstring line = L"*** Server shutting down";
1115
1116                 /*
1117                         Send the message to clients
1118                 */
1119                 for(core::map<u16, RemoteClient*>::Iterator
1120                         i = m_clients.getIterator();
1121                         i.atEnd() == false; i++)
1122                 {
1123                         // Get client and check that it is valid
1124                         RemoteClient *client = i.getNode()->getValue();
1125                         assert(client->peer_id == i.getNode()->getKey());
1126                         if(client->serialization_version == SER_FMT_VER_INVALID)
1127                                 continue;
1128
1129                         try{
1130                                 SendChatMessage(client->peer_id, line);
1131                         }
1132                         catch(con::PeerNotFoundException &e)
1133                         {}
1134                 }
1135         }
1136
1137         /*
1138                 Save players
1139         */
1140         dstream<<"Server: Saving players"<<std::endl;
1141         m_env.serializePlayers(m_mapsavedir);
1142
1143         /*
1144                 Save environment metadata
1145         */
1146         dstream<<"Server: Saving environment metadata"<<std::endl;
1147         m_env.saveMeta(m_mapsavedir);
1148
1149         /*
1150                 Stop threads
1151         */
1152         stop();
1153
1154         /*
1155                 Delete clients
1156         */
1157         {
1158                 JMutexAutoLock clientslock(m_con_mutex);
1159
1160                 for(core::map<u16, RemoteClient*>::Iterator
1161                         i = m_clients.getIterator();
1162                         i.atEnd() == false; i++)
1163                 {
1164                         /*// Delete player
1165                         // NOTE: These are removed by env destructor
1166                         {
1167                                 u16 peer_id = i.getNode()->getKey();
1168                                 JMutexAutoLock envlock(m_env_mutex);
1169                                 m_env.removePlayer(peer_id);
1170                         }*/
1171
1172                         // Delete client
1173                         delete i.getNode()->getValue();
1174                 }
1175         }
1176 }
1177
1178 void Server::start(unsigned short port)
1179 {
1180         DSTACK(__FUNCTION_NAME);
1181         // Stop thread if already running
1182         m_thread.stop();
1183
1184         // Initialize connection
1185         m_con.setTimeoutMs(30);
1186         m_con.Serve(port);
1187
1188         // Start thread
1189         m_thread.setRun(true);
1190         m_thread.Start();
1191
1192         dout_server<<"Server: Started on port "<<port<<std::endl;
1193 }
1194
1195 void Server::stop()
1196 {
1197         DSTACK(__FUNCTION_NAME);
1198
1199         // Stop threads (set run=false first so both start stopping)
1200         m_thread.setRun(false);
1201         m_emergethread.setRun(false);
1202         m_thread.stop();
1203         m_emergethread.stop();
1204
1205         dout_server<<"Server: Threads stopped"<<std::endl;
1206 }
1207
1208 void Server::step(float dtime)
1209 {
1210         DSTACK(__FUNCTION_NAME);
1211         // Limit a bit
1212         if(dtime > 2.0)
1213                 dtime = 2.0;
1214         {
1215                 JMutexAutoLock lock(m_step_dtime_mutex);
1216                 m_step_dtime += dtime;
1217         }
1218 }
1219
1220 void Server::AsyncRunStep()
1221 {
1222         DSTACK(__FUNCTION_NAME);
1223
1224         float dtime;
1225         {
1226                 JMutexAutoLock lock1(m_step_dtime_mutex);
1227                 dtime = m_step_dtime;
1228         }
1229
1230         {
1231                 ScopeProfiler sp(&g_profiler, "Server: selecting and sending "
1232                                 "blocks to clients");
1233                 // Send blocks to clients
1234                 SendBlocks(dtime);
1235         }
1236
1237         if(dtime < 0.001)
1238                 return;
1239
1240         //dstream<<"Server steps "<<dtime<<std::endl;
1241         //dstream<<"Server::AsyncRunStep(): dtime="<<dtime<<std::endl;
1242
1243         {
1244                 JMutexAutoLock lock1(m_step_dtime_mutex);
1245                 m_step_dtime -= dtime;
1246         }
1247
1248         /*
1249                 Update uptime
1250         */
1251         {
1252                 m_uptime.set(m_uptime.get() + dtime);
1253         }
1254
1255         /*
1256                 Update m_time_of_day and overall game time
1257         */
1258         {
1259                 JMutexAutoLock envlock(m_env_mutex);
1260
1261                 m_time_counter += dtime;
1262                 f32 speed = g_settings.getFloat("time_speed") * 24000./(24.*3600);
1263                 u32 units = (u32)(m_time_counter*speed);
1264                 m_time_counter -= (f32)units / speed;
1265
1266                 m_env.setTimeOfDay((m_env.getTimeOfDay() + units) % 24000);
1267
1268                 //dstream<<"Server: m_time_of_day = "<<m_time_of_day.get()<<std::endl;
1269
1270                 /*
1271                         Send to clients at constant intervals
1272                 */
1273
1274                 m_time_of_day_send_timer -= dtime;
1275                 if(m_time_of_day_send_timer < 0.0)
1276                 {
1277                         m_time_of_day_send_timer = g_settings.getFloat("time_send_interval");
1278
1279                         //JMutexAutoLock envlock(m_env_mutex);
1280                         JMutexAutoLock conlock(m_con_mutex);
1281
1282                         for(core::map<u16, RemoteClient*>::Iterator
1283                                 i = m_clients.getIterator();
1284                                 i.atEnd() == false; i++)
1285                         {
1286                                 RemoteClient *client = i.getNode()->getValue();
1287                                 //Player *player = m_env.getPlayer(client->peer_id);
1288
1289                                 SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
1290                                                 m_env.getTimeOfDay());
1291                                 // Send as reliable
1292                                 m_con.Send(client->peer_id, 0, data, true);
1293                         }
1294                 }
1295         }
1296
1297         {
1298                 // Process connection's timeouts
1299                 JMutexAutoLock lock2(m_con_mutex);
1300                 ScopeProfiler sp(&g_profiler, "Server: connection timeout processing");
1301                 m_con.RunTimeouts(dtime);
1302         }
1303
1304         {
1305                 // This has to be called so that the client list gets synced
1306                 // with the peer list of the connection
1307                 ScopeProfiler sp(&g_profiler, "Server: peer change handling");
1308                 handlePeerChanges();
1309         }
1310
1311         {
1312                 JMutexAutoLock lock(m_env_mutex);
1313                 // Step environment
1314                 ScopeProfiler sp(&g_profiler, "Server: environment step");
1315                 m_env.step(dtime);
1316         }
1317
1318         const float map_timer_and_unload_dtime = 5.15;
1319         if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
1320         {
1321                 JMutexAutoLock lock(m_env_mutex);
1322                 // Run Map's timers and unload unused data
1323                 ScopeProfiler sp(&g_profiler, "Server: map timer and unload");
1324                 m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
1325                                 g_settings.getFloat("server_unload_unused_data_timeout"));
1326         }
1327
1328         /*
1329                 Do background stuff
1330         */
1331
1332         /*
1333                 Transform liquids
1334         */
1335         m_liquid_transform_timer += dtime;
1336         if(m_liquid_transform_timer >= 1.00)
1337         {
1338                 m_liquid_transform_timer -= 1.00;
1339
1340                 JMutexAutoLock lock(m_env_mutex);
1341
1342                 ScopeProfiler sp(&g_profiler, "Server: liquid transform");
1343
1344                 core::map<v3s16, MapBlock*> modified_blocks;
1345                 m_env.getMap().transformLiquids(modified_blocks);
1346 #if 0
1347                 /*
1348                         Update lighting
1349                 */
1350                 core::map<v3s16, MapBlock*> lighting_modified_blocks;
1351                 ServerMap &map = ((ServerMap&)m_env.getMap());
1352                 map.updateLighting(modified_blocks, lighting_modified_blocks);
1353
1354                 // Add blocks modified by lighting to modified_blocks
1355                 for(core::map<v3s16, MapBlock*>::Iterator
1356                                 i = lighting_modified_blocks.getIterator();
1357                                 i.atEnd() == false; i++)
1358                 {
1359                         MapBlock *block = i.getNode()->getValue();
1360                         modified_blocks.insert(block->getPos(), block);
1361                 }
1362 #endif
1363                 /*
1364                         Set the modified blocks unsent for all the clients
1365                 */
1366
1367                 JMutexAutoLock lock2(m_con_mutex);
1368
1369                 for(core::map<u16, RemoteClient*>::Iterator
1370                                 i = m_clients.getIterator();
1371                                 i.atEnd() == false; i++)
1372                 {
1373                         RemoteClient *client = i.getNode()->getValue();
1374
1375                         if(modified_blocks.size() > 0)
1376                         {
1377                                 // Remove block from sent history
1378                                 client->SetBlocksNotSent(modified_blocks);
1379                         }
1380                 }
1381         }
1382
1383         // Periodically print some info
1384         {
1385                 float &counter = m_print_info_timer;
1386                 counter += dtime;
1387                 if(counter >= 30.0)
1388                 {
1389                         counter = 0.0;
1390
1391                         JMutexAutoLock lock2(m_con_mutex);
1392
1393                         for(core::map<u16, RemoteClient*>::Iterator
1394                                 i = m_clients.getIterator();
1395                                 i.atEnd() == false; i++)
1396                         {
1397                                 //u16 peer_id = i.getNode()->getKey();
1398                                 RemoteClient *client = i.getNode()->getValue();
1399                                 Player *player = m_env.getPlayer(client->peer_id);
1400                                 if(player==NULL)
1401                                         continue;
1402                                 std::cout<<player->getName()<<"\t";
1403                                 client->PrintInfo(std::cout);
1404                         }
1405                 }
1406         }
1407
1408         //if(g_settings.getBool("enable_experimental"))
1409         {
1410
1411         /*
1412                 Check added and deleted active objects
1413         */
1414         {
1415                 //dstream<<"Server: Checking added and deleted active objects"<<std::endl;
1416                 JMutexAutoLock envlock(m_env_mutex);
1417                 JMutexAutoLock conlock(m_con_mutex);
1418
1419                 ScopeProfiler sp(&g_profiler, "Server: checking added and deleted objects");
1420
1421                 // Radius inside which objects are active
1422                 s16 radius = 32;
1423
1424                 for(core::map<u16, RemoteClient*>::Iterator
1425                         i = m_clients.getIterator();
1426                         i.atEnd() == false; i++)
1427                 {
1428                         RemoteClient *client = i.getNode()->getValue();
1429                         Player *player = m_env.getPlayer(client->peer_id);
1430                         if(player==NULL)
1431                         {
1432                                 // This can happen if the client timeouts somehow
1433                                 /*dstream<<"WARNING: "<<__FUNCTION_NAME<<": Client "
1434                                                 <<client->peer_id
1435                                                 <<" has no associated player"<<std::endl;*/
1436                                 continue;
1437                         }
1438                         v3s16 pos = floatToInt(player->getPosition(), BS);
1439
1440                         core::map<u16, bool> removed_objects;
1441                         core::map<u16, bool> added_objects;
1442                         m_env.getRemovedActiveObjects(pos, radius,
1443                                         client->m_known_objects, removed_objects);
1444                         m_env.getAddedActiveObjects(pos, radius,
1445                                         client->m_known_objects, added_objects);
1446
1447                         // Ignore if nothing happened
1448                         if(removed_objects.size() == 0 && added_objects.size() == 0)
1449                         {
1450                                 //dstream<<"INFO: active objects: none changed"<<std::endl;
1451                                 continue;
1452                         }
1453
1454                         std::string data_buffer;
1455
1456                         char buf[4];
1457
1458                         // Handle removed objects
1459                         writeU16((u8*)buf, removed_objects.size());
1460                         data_buffer.append(buf, 2);
1461                         for(core::map<u16, bool>::Iterator
1462                                         i = removed_objects.getIterator();
1463                                         i.atEnd()==false; i++)
1464                         {
1465                                 // Get object
1466                                 u16 id = i.getNode()->getKey();
1467                                 ServerActiveObject* obj = m_env.getActiveObject(id);
1468
1469                                 // Add to data buffer for sending
1470                                 writeU16((u8*)buf, i.getNode()->getKey());
1471                                 data_buffer.append(buf, 2);
1472
1473                                 // Remove from known objects
1474                                 client->m_known_objects.remove(i.getNode()->getKey());
1475
1476                                 if(obj && obj->m_known_by_count > 0)
1477                                         obj->m_known_by_count--;
1478                         }
1479
1480                         // Handle added objects
1481                         writeU16((u8*)buf, added_objects.size());
1482                         data_buffer.append(buf, 2);
1483                         for(core::map<u16, bool>::Iterator
1484                                         i = added_objects.getIterator();
1485                                         i.atEnd()==false; i++)
1486                         {
1487                                 // Get object
1488                                 u16 id = i.getNode()->getKey();
1489                                 ServerActiveObject* obj = m_env.getActiveObject(id);
1490
1491                                 // Get object type
1492                                 u8 type = ACTIVEOBJECT_TYPE_INVALID;
1493                                 if(obj == NULL)
1494                                         dstream<<"WARNING: "<<__FUNCTION_NAME
1495                                                         <<": NULL object"<<std::endl;
1496                                 else
1497                                         type = obj->getType();
1498
1499                                 // Add to data buffer for sending
1500                                 writeU16((u8*)buf, id);
1501                                 data_buffer.append(buf, 2);
1502                                 writeU8((u8*)buf, type);
1503                                 data_buffer.append(buf, 1);
1504
1505                                 if(obj)
1506                                         data_buffer.append(serializeLongString(
1507                                                         obj->getClientInitializationData()));
1508                                 else
1509                                         data_buffer.append(serializeLongString(""));
1510
1511                                 // Add to known objects
1512                                 client->m_known_objects.insert(i.getNode()->getKey(), false);
1513
1514                                 if(obj)
1515                                         obj->m_known_by_count++;
1516                         }
1517
1518                         // Send packet
1519                         SharedBuffer<u8> reply(2 + data_buffer.size());
1520                         writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD);
1521                         memcpy((char*)&reply[2], data_buffer.c_str(),
1522                                         data_buffer.size());
1523                         // Send as reliable
1524                         m_con.Send(client->peer_id, 0, reply, true);
1525
1526                         dstream<<"INFO: Server: Sent object remove/add: "
1527                                         <<removed_objects.size()<<" removed, "
1528                                         <<added_objects.size()<<" added, "
1529                                         <<"packet size is "<<reply.getSize()<<std::endl;
1530                 }
1531
1532 #if 0
1533                 /*
1534                         Collect a list of all the objects known by the clients
1535                         and report it back to the environment.
1536                 */
1537
1538                 core::map<u16, bool> all_known_objects;
1539
1540                 for(core::map<u16, RemoteClient*>::Iterator
1541                         i = m_clients.getIterator();
1542                         i.atEnd() == false; i++)
1543                 {
1544                         RemoteClient *client = i.getNode()->getValue();
1545                         // Go through all known objects of client
1546                         for(core::map<u16, bool>::Iterator
1547                                         i = client->m_known_objects.getIterator();
1548                                         i.atEnd()==false; i++)
1549                         {
1550                                 u16 id = i.getNode()->getKey();
1551                                 all_known_objects[id] = true;
1552                         }
1553                 }
1554
1555                 m_env.setKnownActiveObjects(whatever);
1556 #endif
1557
1558         }
1559
1560         /*
1561                 Send object messages
1562         */
1563         {
1564                 JMutexAutoLock envlock(m_env_mutex);
1565                 JMutexAutoLock conlock(m_con_mutex);
1566
1567                 ScopeProfiler sp(&g_profiler, "Server: sending object messages");
1568
1569                 // Key = object id
1570                 // Value = data sent by object
1571                 core::map<u16, core::list<ActiveObjectMessage>* > buffered_messages;
1572
1573                 // Get active object messages from environment
1574                 for(;;)
1575                 {
1576                         ActiveObjectMessage aom = m_env.getActiveObjectMessage();
1577                         if(aom.id == 0)
1578                                 break;
1579
1580                         core::list<ActiveObjectMessage>* message_list = NULL;
1581                         core::map<u16, core::list<ActiveObjectMessage>* >::Node *n;
1582                         n = buffered_messages.find(aom.id);
1583                         if(n == NULL)
1584                         {
1585                                 message_list = new core::list<ActiveObjectMessage>;
1586                                 buffered_messages.insert(aom.id, message_list);
1587                         }
1588                         else
1589                         {
1590                                 message_list = n->getValue();
1591                         }
1592                         message_list->push_back(aom);
1593                 }
1594
1595                 // Route data to every client
1596                 for(core::map<u16, RemoteClient*>::Iterator
1597                         i = m_clients.getIterator();
1598                         i.atEnd()==false; i++)
1599                 {
1600                         RemoteClient *client = i.getNode()->getValue();
1601                         std::string reliable_data;
1602                         std::string unreliable_data;
1603                         // Go through all objects in message buffer
1604                         for(core::map<u16, core::list<ActiveObjectMessage>* >::Iterator
1605                                         j = buffered_messages.getIterator();
1606                                         j.atEnd()==false; j++)
1607                         {
1608                                 // If object is not known by client, skip it
1609                                 u16 id = j.getNode()->getKey();
1610                                 if(client->m_known_objects.find(id) == NULL)
1611                                         continue;
1612                                 // Get message list of object
1613                                 core::list<ActiveObjectMessage>* list = j.getNode()->getValue();
1614                                 // Go through every message
1615                                 for(core::list<ActiveObjectMessage>::Iterator
1616                                                 k = list->begin(); k != list->end(); k++)
1617                                 {
1618                                         // Compose the full new data with header
1619                                         ActiveObjectMessage aom = *k;
1620                                         std::string new_data;
1621                                         // Add object id
1622                                         char buf[2];
1623                                         writeU16((u8*)&buf[0], aom.id);
1624                                         new_data.append(buf, 2);
1625                                         // Add data
1626                                         new_data += serializeString(aom.datastring);
1627                                         // Add data to buffer
1628                                         if(aom.reliable)
1629                                                 reliable_data += new_data;
1630                                         else
1631                                                 unreliable_data += new_data;
1632                                 }
1633                         }
1634                         /*
1635                                 reliable_data and unreliable_data are now ready.
1636                                 Send them.
1637                         */
1638                         if(reliable_data.size() > 0)
1639                         {
1640                                 SharedBuffer<u8> reply(2 + reliable_data.size());
1641                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
1642                                 memcpy((char*)&reply[2], reliable_data.c_str(),
1643                                                 reliable_data.size());
1644                                 // Send as reliable
1645                                 m_con.Send(client->peer_id, 0, reply, true);
1646                         }
1647                         if(unreliable_data.size() > 0)
1648                         {
1649                                 SharedBuffer<u8> reply(2 + unreliable_data.size());
1650                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
1651                                 memcpy((char*)&reply[2], unreliable_data.c_str(),
1652                                                 unreliable_data.size());
1653                                 // Send as unreliable
1654                                 m_con.Send(client->peer_id, 0, reply, false);
1655                         }
1656
1657                         /*if(reliable_data.size() > 0 || unreliable_data.size() > 0)
1658                         {
1659                                 dstream<<"INFO: Server: Size of object message data: "
1660                                                 <<"reliable: "<<reliable_data.size()
1661                                                 <<", unreliable: "<<unreliable_data.size()
1662                                                 <<std::endl;
1663                         }*/
1664                 }
1665
1666                 // Clear buffered_messages
1667                 for(core::map<u16, core::list<ActiveObjectMessage>* >::Iterator
1668                                 i = buffered_messages.getIterator();
1669                                 i.atEnd()==false; i++)
1670                 {
1671                         delete i.getNode()->getValue();
1672                 }
1673         }
1674
1675         } // enable_experimental
1676
1677         /*
1678                 Send queued-for-sending map edit events.
1679         */
1680         {
1681                 // Don't send too many at a time
1682                 //u32 count = 0;
1683
1684                 // Single change sending is disabled if queue size is not small
1685                 bool disable_single_change_sending = false;
1686                 if(m_unsent_map_edit_queue.size() >= 4)
1687                         disable_single_change_sending = true;
1688
1689                 bool got_any_events = false;
1690
1691                 // We'll log the amount of each
1692                 Profiler prof;
1693
1694                 while(m_unsent_map_edit_queue.size() != 0)
1695                 {
1696                         got_any_events = true;
1697
1698                         MapEditEvent* event = m_unsent_map_edit_queue.pop_front();
1699
1700                         // Players far away from the change are stored here.
1701                         // Instead of sending the changes, MapBlocks are set not sent
1702                         // for them.
1703                         core::list<u16> far_players;
1704
1705                         if(event->type == MEET_ADDNODE)
1706                         {
1707                                 //dstream<<"Server: MEET_ADDNODE"<<std::endl;
1708                                 prof.add("MEET_ADDNODE", 1);
1709                                 if(disable_single_change_sending)
1710                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1711                                                         &far_players, 5);
1712                                 else
1713                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1714                                                         &far_players, 30);
1715                         }
1716                         else if(event->type == MEET_REMOVENODE)
1717                         {
1718                                 //dstream<<"Server: MEET_REMOVENODE"<<std::endl;
1719                                 prof.add("MEET_REMOVENODE", 1);
1720                                 if(disable_single_change_sending)
1721                                         sendRemoveNode(event->p, event->already_known_by_peer,
1722                                                         &far_players, 5);
1723                                 else
1724                                         sendRemoveNode(event->p, event->already_known_by_peer,
1725                                                         &far_players, 30);
1726                         }
1727                         else if(event->type == MEET_BLOCK_NODE_METADATA_CHANGED)
1728                         {
1729                                 dstream<<"Server: MEET_BLOCK_NODE_METADATA_CHANGED"<<std::endl;
1730                                 prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
1731                                 setBlockNotSent(event->p);
1732                         }
1733                         else if(event->type == MEET_OTHER)
1734                         {
1735                                 prof.add("MEET_OTHER", 1);
1736                                 dstream<<"WARNING: Server: MEET_OTHER not implemented"
1737                                                 <<std::endl;
1738                         }
1739                         else
1740                         {
1741                                 prof.add("unknown", 1);
1742                                 dstream<<"WARNING: Server: Unknown MapEditEvent "
1743                                                 <<((u32)event->type)<<std::endl;
1744                         }
1745
1746                         /*
1747                                 Set blocks not sent to far players
1748                         */
1749                         if(far_players.size() > 0)
1750                         {
1751                                 // Convert list format to that wanted by SetBlocksNotSent
1752                                 core::map<v3s16, MapBlock*> modified_blocks2;
1753                                 for(core::map<v3s16, bool>::Iterator
1754                                                 i = event->modified_blocks.getIterator();
1755                                                 i.atEnd()==false; i++)
1756                                 {
1757                                         v3s16 p = i.getNode()->getKey();
1758                                         modified_blocks2.insert(p,
1759                                                         m_env.getMap().getBlockNoCreateNoEx(p));
1760                                 }
1761                                 // Set blocks not sent
1762                                 for(core::list<u16>::Iterator
1763                                                 i = far_players.begin();
1764                                                 i != far_players.end(); i++)
1765                                 {
1766                                         u16 peer_id = *i;
1767                                         RemoteClient *client = getClient(peer_id);
1768                                         if(client==NULL)
1769                                                 continue;
1770                                         client->SetBlocksNotSent(modified_blocks2);
1771                                 }
1772                         }
1773
1774                         delete event;
1775
1776                         /*// Don't send too many at a time
1777                         count++;
1778                         if(count >= 1 && m_unsent_map_edit_queue.size() < 100)
1779                                 break;*/
1780                 }
1781
1782                 if(got_any_events)
1783                 {
1784                         dstream<<"Server: MapEditEvents:"<<std::endl;
1785                         prof.print(dstream);
1786                 }
1787
1788         }
1789
1790         /*
1791                 Send object positions
1792                 TODO: Get rid of MapBlockObjects
1793         */
1794         {
1795                 float &counter = m_objectdata_timer;
1796                 counter += dtime;
1797                 if(counter >= g_settings.getFloat("objectdata_interval"))
1798                 {
1799                         JMutexAutoLock lock1(m_env_mutex);
1800                         JMutexAutoLock lock2(m_con_mutex);
1801
1802                         ScopeProfiler sp(&g_profiler, "Server: sending mbo positions");
1803
1804                         SendObjectData(counter);
1805
1806                         counter = 0.0;
1807                 }
1808         }
1809
1810         /*
1811                 Trigger emergethread (it somehow gets to a non-triggered but
1812                 bysy state sometimes)
1813         */
1814         {
1815                 float &counter = m_emergethread_trigger_timer;
1816                 counter += dtime;
1817                 if(counter >= 2.0)
1818                 {
1819                         counter = 0.0;
1820
1821                         m_emergethread.trigger();
1822                 }
1823         }
1824
1825         // Save map, players and auth stuff
1826         {
1827                 float &counter = m_savemap_timer;
1828                 counter += dtime;
1829                 if(counter >= g_settings.getFloat("server_map_save_interval"))
1830                 {
1831                         counter = 0.0;
1832
1833                         ScopeProfiler sp(&g_profiler, "Server: saving stuff");
1834
1835                         // Auth stuff
1836                         if(m_authmanager.isModified())
1837                                 m_authmanager.save();
1838
1839                         // Map
1840                         JMutexAutoLock lock(m_env_mutex);
1841
1842                         /*// Unload unused data (delete from memory)
1843                         m_env.getMap().unloadUnusedData(
1844                                         g_settings.getFloat("server_unload_unused_sectors_timeout"));
1845                                         */
1846                         /*u32 deleted_count = m_env.getMap().unloadUnusedData(
1847                                         g_settings.getFloat("server_unload_unused_sectors_timeout"));
1848                                         */
1849
1850                         // Save only changed parts
1851                         m_env.getMap().save(true);
1852
1853                         /*if(deleted_count > 0)
1854                         {
1855                                 dout_server<<"Server: Unloaded "<<deleted_count
1856                                                 <<" blocks from memory"<<std::endl;
1857                         }*/
1858
1859                         // Save players
1860                         m_env.serializePlayers(m_mapsavedir);
1861
1862                         // Save environment metadata
1863                         m_env.saveMeta(m_mapsavedir);
1864                 }
1865         }
1866 }
1867
1868 void Server::Receive()
1869 {
1870         DSTACK(__FUNCTION_NAME);
1871         u32 data_maxsize = 10000;
1872         Buffer<u8> data(data_maxsize);
1873         u16 peer_id;
1874         u32 datasize;
1875         try{
1876                 {
1877                         JMutexAutoLock conlock(m_con_mutex);
1878                         datasize = m_con.Receive(peer_id, *data, data_maxsize);
1879                 }
1880
1881                 // This has to be called so that the client list gets synced
1882                 // with the peer list of the connection
1883                 handlePeerChanges();
1884
1885                 ProcessData(*data, datasize, peer_id);
1886         }
1887         catch(con::InvalidIncomingDataException &e)
1888         {
1889                 derr_server<<"Server::Receive(): "
1890                                 "InvalidIncomingDataException: what()="
1891                                 <<e.what()<<std::endl;
1892         }
1893         catch(con::PeerNotFoundException &e)
1894         {
1895                 //NOTE: This is not needed anymore
1896
1897                 // The peer has been disconnected.
1898                 // Find the associated player and remove it.
1899
1900                 /*JMutexAutoLock envlock(m_env_mutex);
1901
1902                 dout_server<<"ServerThread: peer_id="<<peer_id
1903                                 <<" has apparently closed connection. "
1904                                 <<"Removing player."<<std::endl;
1905
1906                 m_env.removePlayer(peer_id);*/
1907         }
1908 }
1909
1910 void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
1911 {
1912         DSTACK(__FUNCTION_NAME);
1913         // Environment is locked first.
1914         JMutexAutoLock envlock(m_env_mutex);
1915         JMutexAutoLock conlock(m_con_mutex);
1916
1917         con::Peer *peer;
1918         try{
1919                 peer = m_con.GetPeer(peer_id);
1920         }
1921         catch(con::PeerNotFoundException &e)
1922         {
1923                 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: peer "
1924                                 <<peer_id<<" not found"<<std::endl;
1925                 return;
1926         }
1927
1928         u8 peer_ser_ver = getClient(peer->id)->serialization_version;
1929
1930         try
1931         {
1932
1933         if(datasize < 2)
1934                 return;
1935
1936         ToServerCommand command = (ToServerCommand)readU16(&data[0]);
1937
1938         if(command == TOSERVER_INIT)
1939         {
1940                 // [0] u16 TOSERVER_INIT
1941                 // [2] u8 SER_FMT_VER_HIGHEST
1942                 // [3] u8[20] player_name
1943                 // [23] u8[28] password <--- can be sent without this, from old versions
1944
1945                 if(datasize < 2+1+PLAYERNAME_SIZE)
1946                         return;
1947
1948                 derr_server<<DTIME<<"Server: Got TOSERVER_INIT from "
1949                                 <<peer->id<<std::endl;
1950
1951                 // First byte after command is maximum supported
1952                 // serialization version
1953                 u8 client_max = data[2];
1954                 u8 our_max = SER_FMT_VER_HIGHEST;
1955                 // Use the highest version supported by both
1956                 u8 deployed = core::min_(client_max, our_max);
1957                 // If it's lower than the lowest supported, give up.
1958                 if(deployed < SER_FMT_VER_LOWEST)
1959                         deployed = SER_FMT_VER_INVALID;
1960
1961                 //peer->serialization_version = deployed;
1962                 getClient(peer->id)->pending_serialization_version = deployed;
1963
1964                 if(deployed == SER_FMT_VER_INVALID)
1965                 {
1966                         derr_server<<DTIME<<"Server: Cannot negotiate "
1967                                         "serialization version with peer "
1968                                         <<peer_id<<std::endl;
1969                         SendAccessDenied(m_con, peer_id,
1970                                         L"Your client is too old (map format)");
1971                         return;
1972                 }
1973
1974                 /*
1975                         Check network protocol version
1976                 */
1977                 u16 net_proto_version = 0;
1978                 if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2)
1979                 {
1980                         net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE]);
1981                 }
1982                 if(net_proto_version == 0)
1983                 {
1984                         SendAccessDenied(m_con, peer_id,
1985                                         L"Your client is too old (network protocol)");
1986                         return;
1987                 }
1988
1989                 /*
1990                         Set up player
1991                 */
1992
1993                 // Get player name
1994                 char playername[PLAYERNAME_SIZE];
1995                 for(u32 i=0; i<PLAYERNAME_SIZE-1; i++)
1996                 {
1997                         playername[i] = data[3+i];
1998                 }
1999                 playername[PLAYERNAME_SIZE-1] = 0;
2000
2001                 if(playername[0]=='\0')
2002                 {
2003                         derr_server<<DTIME<<"Server: Player has empty name"<<std::endl;
2004                         SendAccessDenied(m_con, peer_id,
2005                                         L"Empty name");
2006                         return;
2007                 }
2008
2009                 if(string_allowed(playername, PLAYERNAME_ALLOWED_CHARS)==false)
2010                 {
2011                         derr_server<<DTIME<<"Server: Player has invalid name"<<std::endl;
2012                         SendAccessDenied(m_con, peer_id,
2013                                         L"Name contains unallowed characters");
2014                         return;
2015                 }
2016
2017                 // Get password
2018                 char password[PASSWORD_SIZE];
2019                 if(datasize >= 2+1+PLAYERNAME_SIZE)
2020                 {
2021                         // old version - assume blank password
2022                         password[0] = 0;
2023                 }
2024                 else
2025                 {
2026                                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
2027                                 {
2028                                         password[i] = data[23+i];
2029                                 }
2030                                 password[PASSWORD_SIZE-1] = 0;
2031                 }
2032
2033                 std::string checkpwd;
2034                 if(m_authmanager.exists(playername))
2035                 {
2036                         checkpwd = m_authmanager.getPassword(playername);
2037                 }
2038                 else
2039                 {
2040                         checkpwd = g_settings.get("default_password");
2041                 }
2042
2043                 if(password != checkpwd && checkpwd != "")
2044                 {
2045                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2046                                         <<": supplied invalid password for "
2047                                         <<playername<<std::endl;
2048                         SendAccessDenied(m_con, peer_id, L"Invalid password");
2049                         return;
2050                 }
2051
2052                 // Add player to auth manager
2053                 if(m_authmanager.exists(playername) == false)
2054                 {
2055                         derr_server<<DTIME<<"Server: adding player "<<playername
2056                                         <<" to auth manager"<<std::endl;
2057                         m_authmanager.add(playername);
2058                         m_authmanager.setPassword(playername, checkpwd);
2059                         m_authmanager.setPrivs(playername,
2060                                         stringToPrivs(g_settings.get("default_privs")));
2061                         m_authmanager.save();
2062                 }
2063
2064                 // Get player
2065                 Player *player = emergePlayer(playername, password, peer_id);
2066
2067
2068                 /*{
2069                         // DEBUG: Test serialization
2070                         std::ostringstream test_os;
2071                         player->serialize(test_os);
2072                         dstream<<"Player serialization test: \""<<test_os.str()
2073                                         <<"\""<<std::endl;
2074                         std::istringstream test_is(test_os.str());
2075                         player->deSerialize(test_is);
2076                 }*/
2077
2078                 // If failed, cancel
2079                 if(player == NULL)
2080                 {
2081                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2082                                         <<": failed to emerge player"<<std::endl;
2083                         return;
2084                 }
2085
2086                 /*
2087                 // If a client is already connected to the player, cancel
2088                 if(player->peer_id != 0)
2089                 {
2090                         derr_server<<DTIME<<"Server: peer_id="<<peer_id
2091                                         <<" tried to connect to "
2092                                         "an already connected player (peer_id="
2093                                         <<player->peer_id<<")"<<std::endl;
2094                         return;
2095                 }
2096                 // Set client of player
2097                 player->peer_id = peer_id;
2098                 */
2099
2100                 // Check if player doesn't exist
2101                 if(player == NULL)
2102                         throw con::InvalidIncomingDataException
2103                                 ("Server::ProcessData(): INIT: Player doesn't exist");
2104
2105                 /*// update name if it was supplied
2106                 if(datasize >= 20+3)
2107                 {
2108                         data[20+3-1] = 0;
2109                         player->updateName((const char*)&data[3]);
2110                 }*/
2111
2112                 /*
2113                         Answer with a TOCLIENT_INIT
2114                 */
2115                 {
2116                         SharedBuffer<u8> reply(2+1+6+8);
2117                         writeU16(&reply[0], TOCLIENT_INIT);
2118                         writeU8(&reply[2], deployed);
2119                         writeV3S16(&reply[2+1], floatToInt(player->getPosition()+v3f(0,BS/2,0), BS));
2120                         writeU64(&reply[2+1+6], m_env.getServerMap().getSeed());
2121
2122                         // Send as reliable
2123                         m_con.Send(peer_id, 0, reply, true);
2124                 }
2125
2126                 /*
2127                         Send complete position information
2128                 */
2129                 SendMovePlayer(player);
2130
2131                 return;
2132         }
2133
2134         if(command == TOSERVER_INIT2)
2135         {
2136                 derr_server<<DTIME<<"Server: Got TOSERVER_INIT2 from "
2137                                 <<peer->id<<std::endl;
2138
2139
2140                 getClient(peer->id)->serialization_version
2141                                 = getClient(peer->id)->pending_serialization_version;
2142
2143                 /*
2144                         Send some initialization data
2145                 */
2146
2147                 // Send player info to all players
2148                 SendPlayerInfos();
2149
2150                 // Send inventory to player
2151                 UpdateCrafting(peer->id);
2152                 SendInventory(peer->id);
2153
2154                 // Send HP
2155                 {
2156                         Player *player = m_env.getPlayer(peer_id);
2157                         SendPlayerHP(player);
2158                 }
2159
2160                 // Send time of day
2161                 {
2162                         SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
2163                                         m_env.getTimeOfDay());
2164                         m_con.Send(peer->id, 0, data, true);
2165                 }
2166
2167                 // Send information about server to player in chat
2168                 SendChatMessage(peer_id, getStatusString());
2169
2170                 // Send information about joining in chat
2171                 {
2172                         std::wstring name = L"unknown";
2173                         Player *player = m_env.getPlayer(peer_id);
2174                         if(player != NULL)
2175                                 name = narrow_to_wide(player->getName());
2176
2177                         std::wstring message;
2178                         message += L"*** ";
2179                         message += name;
2180                         message += L" joined game";
2181                         BroadcastChatMessage(message);
2182                 }
2183
2184                 return;
2185         }
2186
2187         if(peer_ser_ver == SER_FMT_VER_INVALID)
2188         {
2189                 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: Peer"
2190                                 " serialization format invalid or not initialized."
2191                                 " Skipping incoming command="<<command<<std::endl;
2192                 return;
2193         }
2194
2195         Player *player = m_env.getPlayer(peer_id);
2196
2197         if(player == NULL){
2198                 derr_server<<"Server::ProcessData(): Cancelling: "
2199                                 "No player for peer_id="<<peer_id
2200                                 <<std::endl;
2201                 return;
2202         }
2203         if(command == TOSERVER_PLAYERPOS)
2204         {
2205                 if(datasize < 2+12+12+4+4)
2206                         return;
2207
2208                 u32 start = 0;
2209                 v3s32 ps = readV3S32(&data[start+2]);
2210                 v3s32 ss = readV3S32(&data[start+2+12]);
2211                 f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
2212                 f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
2213                 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
2214                 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
2215                 pitch = wrapDegrees(pitch);
2216                 yaw = wrapDegrees(yaw);
2217                 player->setPosition(position);
2218                 player->setSpeed(speed);
2219                 player->setPitch(pitch);
2220                 player->setYaw(yaw);
2221
2222                 /*dout_server<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
2223                                 <<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
2224                                 <<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
2225         }
2226         else if(command == TOSERVER_GOTBLOCKS)
2227         {
2228                 if(datasize < 2+1)
2229                         return;
2230
2231                 /*
2232                         [0] u16 command
2233                         [2] u8 count
2234                         [3] v3s16 pos_0
2235                         [3+6] v3s16 pos_1
2236                         ...
2237                 */
2238
2239                 u16 count = data[2];
2240                 for(u16 i=0; i<count; i++)
2241                 {
2242                         if((s16)datasize < 2+1+(i+1)*6)
2243                                 throw con::InvalidIncomingDataException
2244                                         ("GOTBLOCKS length is too short");
2245                         v3s16 p = readV3S16(&data[2+1+i*6]);
2246                         /*dstream<<"Server: GOTBLOCKS ("
2247                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2248                         RemoteClient *client = getClient(peer_id);
2249                         client->GotBlock(p);
2250                 }
2251         }
2252         else if(command == TOSERVER_DELETEDBLOCKS)
2253         {
2254                 if(datasize < 2+1)
2255                         return;
2256
2257                 /*
2258                         [0] u16 command
2259                         [2] u8 count
2260                         [3] v3s16 pos_0
2261                         [3+6] v3s16 pos_1
2262                         ...
2263                 */
2264
2265                 u16 count = data[2];
2266                 for(u16 i=0; i<count; i++)
2267                 {
2268                         if((s16)datasize < 2+1+(i+1)*6)
2269                                 throw con::InvalidIncomingDataException
2270                                         ("DELETEDBLOCKS length is too short");
2271                         v3s16 p = readV3S16(&data[2+1+i*6]);
2272                         /*dstream<<"Server: DELETEDBLOCKS ("
2273                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2274                         RemoteClient *client = getClient(peer_id);
2275                         client->SetBlockNotSent(p);
2276                 }
2277         }
2278         else if(command == TOSERVER_CLICK_OBJECT)
2279         {
2280                 if(datasize < 13)
2281                         return;
2282
2283                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2284                         return;
2285
2286                 /*
2287                         [0] u16 command
2288                         [2] u8 button (0=left, 1=right)
2289                         [3] v3s16 block
2290                         [9] s16 id
2291                         [11] u16 item
2292                 */
2293                 u8 button = readU8(&data[2]);
2294                 v3s16 p;
2295                 p.X = readS16(&data[3]);
2296                 p.Y = readS16(&data[5]);
2297                 p.Z = readS16(&data[7]);
2298                 s16 id = readS16(&data[9]);
2299                 //u16 item_i = readU16(&data[11]);
2300
2301                 MapBlock *block = NULL;
2302                 try
2303                 {
2304                         block = m_env.getMap().getBlockNoCreate(p);
2305                 }
2306                 catch(InvalidPositionException &e)
2307                 {
2308                         derr_server<<"CLICK_OBJECT block not found"<<std::endl;
2309                         return;
2310                 }
2311
2312                 MapBlockObject *obj = block->getObject(id);
2313
2314                 if(obj == NULL)
2315                 {
2316                         derr_server<<"CLICK_OBJECT object not found"<<std::endl;
2317                         return;
2318                 }
2319
2320                 //TODO: Check that object is reasonably close
2321
2322                 // Left click
2323                 if(button == 0)
2324                 {
2325                         InventoryList *ilist = player->inventory.getList("main");
2326                         if(g_settings.getBool("creative_mode") == false && ilist != NULL)
2327                         {
2328
2329                                 // Skip if inventory has no free space
2330                                 if(ilist->getUsedSlots() == ilist->getSize())
2331                                 {
2332                                         dout_server<<"Player inventory has no free space"<<std::endl;
2333                                         return;
2334                                 }
2335
2336                                 /*
2337                                         Create the inventory item
2338                                 */
2339                                 InventoryItem *item = NULL;
2340                                 // If it is an item-object, take the item from it
2341                                 if(obj->getTypeId() == MAPBLOCKOBJECT_TYPE_ITEM)
2342                                 {
2343                                         item = ((ItemObject*)obj)->createInventoryItem();
2344                                 }
2345                                 // Else create an item of the object
2346                                 else
2347                                 {
2348                                         item = new MapBlockObjectItem
2349                                                         (obj->getInventoryString());
2350                                 }
2351
2352                                 // Add to inventory and send inventory
2353                                 ilist->addItem(item);
2354                                 UpdateCrafting(player->peer_id);
2355                                 SendInventory(player->peer_id);
2356                         }
2357
2358                         // Remove from block
2359                         block->removeObject(id);
2360                 }
2361         }
2362         else if(command == TOSERVER_CLICK_ACTIVEOBJECT)
2363         {
2364                 if(datasize < 7)
2365                         return;
2366
2367                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2368                         return;
2369
2370                 /*
2371                         length: 7
2372                         [0] u16 command
2373                         [2] u8 button (0=left, 1=right)
2374                         [3] u16 id
2375                         [5] u16 item
2376                 */
2377                 u8 button = readU8(&data[2]);
2378                 u16 id = readS16(&data[3]);
2379                 u16 item_i = readU16(&data[11]);
2380
2381                 ServerActiveObject *obj = m_env.getActiveObject(id);
2382
2383                 if(obj == NULL)
2384                 {
2385                         derr_server<<"Server: CLICK_ACTIVEOBJECT: object not found"
2386                                         <<std::endl;
2387                         return;
2388                 }
2389
2390                 // Skip if object has been removed
2391                 if(obj->m_removed)
2392                         return;
2393
2394                 //TODO: Check that object is reasonably close
2395
2396                 // Left click, pick object up (usually)
2397                 if(button == 0)
2398                 {
2399                         /*
2400                                 Try creating inventory item
2401                         */
2402                         InventoryItem *item = obj->createPickedUpItem();
2403
2404                         if(item)
2405                         {
2406                                 InventoryList *ilist = player->inventory.getList("main");
2407                                 if(ilist != NULL)
2408                                 {
2409                                         if(g_settings.getBool("creative_mode") == false)
2410                                         {
2411                                                 // Skip if inventory has no free space
2412                                                 if(ilist->getUsedSlots() == ilist->getSize())
2413                                                 {
2414                                                         dout_server<<"Player inventory has no free space"<<std::endl;
2415                                                         return;
2416                                                 }
2417
2418                                                 // Add to inventory and send inventory
2419                                                 ilist->addItem(item);
2420                                                 UpdateCrafting(player->peer_id);
2421                                                 SendInventory(player->peer_id);
2422                                         }
2423
2424                                         // Remove object from environment
2425                                         obj->m_removed = true;
2426                                 }
2427                         }
2428                         else
2429                         {
2430                                 /*
2431                                         Item cannot be picked up. Punch it instead.
2432                                 */
2433
2434                                 ToolItem *titem = NULL;
2435                                 std::string toolname = "";
2436
2437                                 InventoryList *mlist = player->inventory.getList("main");
2438                                 if(mlist != NULL)
2439                                 {
2440                                         InventoryItem *item = mlist->getItem(item_i);
2441                                         if(item && (std::string)item->getName() == "ToolItem")
2442                                         {
2443                                                 titem = (ToolItem*)item;
2444                                                 toolname = titem->getToolName();
2445                                         }
2446                                 }
2447
2448                                 v3f playerpos = player->getPosition();
2449                                 v3f objpos = obj->getBasePosition();
2450                                 v3f dir = (objpos - playerpos).normalize();
2451
2452                                 u16 wear = obj->punch(toolname, dir);
2453
2454                                 if(titem)
2455                                 {
2456                                         bool weared_out = titem->addWear(wear);
2457                                         if(weared_out)
2458                                                 mlist->deleteItem(item_i);
2459                                         SendInventory(player->peer_id);
2460                                 }
2461                         }
2462                 }
2463                 // Right click, do something with object
2464                 if(button == 1)
2465                 {
2466                         // Track hp changes super-crappily
2467                         u16 oldhp = player->hp;
2468
2469                         // Do stuff
2470                         obj->rightClick(player);
2471
2472                         // Send back stuff
2473                         if(player->hp != oldhp)
2474                         {
2475                                 SendPlayerHP(player);
2476                         }
2477                 }
2478         }
2479         else if(command == TOSERVER_GROUND_ACTION)
2480         {
2481                 if(datasize < 17)
2482                         return;
2483                 /*
2484                         length: 17
2485                         [0] u16 command
2486                         [2] u8 action
2487                         [3] v3s16 nodepos_undersurface
2488                         [9] v3s16 nodepos_abovesurface
2489                         [15] u16 item
2490                         actions:
2491                         0: start digging
2492                         1: place block
2493                         2: stop digging (all parameters ignored)
2494                         3: digging completed
2495                 */
2496                 u8 action = readU8(&data[2]);
2497                 v3s16 p_under;
2498                 p_under.X = readS16(&data[3]);
2499                 p_under.Y = readS16(&data[5]);
2500                 p_under.Z = readS16(&data[7]);
2501                 v3s16 p_over;
2502                 p_over.X = readS16(&data[9]);
2503                 p_over.Y = readS16(&data[11]);
2504                 p_over.Z = readS16(&data[13]);
2505                 u16 item_i = readU16(&data[15]);
2506
2507                 //TODO: Check that target is reasonably close
2508
2509                 /*
2510                         0: start digging
2511                 */
2512                 if(action == 0)
2513                 {
2514                         /*
2515                                 NOTE: This can be used in the future to check if
2516                                 somebody is cheating, by checking the timing.
2517                         */
2518                 } // action == 0
2519
2520                 /*
2521                         2: stop digging
2522                 */
2523                 else if(action == 2)
2524                 {
2525 #if 0
2526                         RemoteClient *client = getClient(peer->id);
2527                         JMutexAutoLock digmutex(client->m_dig_mutex);
2528                         client->m_dig_tool_item = -1;
2529 #endif
2530                 }
2531
2532                 /*
2533                         3: Digging completed
2534                 */
2535                 else if(action == 3)
2536                 {
2537                         // Mandatory parameter; actually used for nothing
2538                         core::map<v3s16, MapBlock*> modified_blocks;
2539
2540                         content_t material = CONTENT_IGNORE;
2541                         u8 mineral = MINERAL_NONE;
2542
2543                         bool cannot_remove_node = false;
2544
2545                         try
2546                         {
2547                                 MapNode n = m_env.getMap().getNode(p_under);
2548                                 // Get mineral
2549                                 mineral = n.getMineral();
2550                                 // Get material at position
2551                                 material = n.getContent();
2552                                 // If not yet cancelled
2553                                 if(cannot_remove_node == false)
2554                                 {
2555                                         // If it's not diggable, do nothing
2556                                         if(content_diggable(material) == false)
2557                                         {
2558                                                 derr_server<<"Server: Not finishing digging: "
2559                                                                 <<"Node not diggable"
2560                                                                 <<std::endl;
2561                                                 cannot_remove_node = true;
2562                                         }
2563                                 }
2564                                 // If not yet cancelled
2565                                 if(cannot_remove_node == false)
2566                                 {
2567                                         // Get node metadata
2568                                         NodeMetadata *meta = m_env.getMap().getNodeMetadata(p_under);
2569                                         if(meta && meta->nodeRemovalDisabled() == true)
2570                                         {
2571                                                 derr_server<<"Server: Not finishing digging: "
2572                                                                 <<"Node metadata disables removal"
2573                                                                 <<std::endl;
2574                                                 cannot_remove_node = true;
2575                                         }
2576                                 }
2577                         }
2578                         catch(InvalidPositionException &e)
2579                         {
2580                                 derr_server<<"Server: Not finishing digging: Node not found."
2581                                                 <<" Adding block to emerge queue."
2582                                                 <<std::endl;
2583                                 m_emerge_queue.addBlock(peer_id,
2584                                                 getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2585                                 cannot_remove_node = true;
2586                         }
2587
2588                         // Make sure the player is allowed to do it
2589                         if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2590                         {
2591                                 dstream<<"Player "<<player->getName()<<" cannot remove node"
2592                                                 <<" because privileges are "<<getPlayerPrivs(player)
2593                                                 <<std::endl;
2594                                 cannot_remove_node = true;
2595                         }
2596
2597                         /*
2598                                 If node can't be removed, set block to be re-sent to
2599                                 client and quit.
2600                         */
2601                         if(cannot_remove_node)
2602                         {
2603                                 derr_server<<"Server: Not finishing digging."<<std::endl;
2604
2605                                 // Client probably has wrong data.
2606                                 // Set block not sent, so that client will get
2607                                 // a valid one.
2608                                 dstream<<"Client "<<peer_id<<" tried to dig "
2609                                                 <<"node; but node cannot be removed."
2610                                                 <<" setting MapBlock not sent."<<std::endl;
2611                                 RemoteClient *client = getClient(peer_id);
2612                                 v3s16 blockpos = getNodeBlockPos(p_under);
2613                                 client->SetBlockNotSent(blockpos);
2614
2615                                 return;
2616                         }
2617
2618                         /*
2619                                 Send the removal to all close-by players.
2620                                 - If other player is close, send REMOVENODE
2621                                 - Otherwise set blocks not sent
2622                         */
2623                         core::list<u16> far_players;
2624                         sendRemoveNode(p_under, peer_id, &far_players, 30);
2625
2626                         /*
2627                                 Update and send inventory
2628                         */
2629
2630                         if(g_settings.getBool("creative_mode") == false)
2631                         {
2632                                 /*
2633                                         Wear out tool
2634                                 */
2635                                 InventoryList *mlist = player->inventory.getList("main");
2636                                 if(mlist != NULL)
2637                                 {
2638                                         InventoryItem *item = mlist->getItem(item_i);
2639                                         if(item && (std::string)item->getName() == "ToolItem")
2640                                         {
2641                                                 ToolItem *titem = (ToolItem*)item;
2642                                                 std::string toolname = titem->getToolName();
2643
2644                                                 // Get digging properties for material and tool
2645                                                 DiggingProperties prop =
2646                                                                 getDiggingProperties(material, toolname);
2647
2648                                                 if(prop.diggable == false)
2649                                                 {
2650                                                         derr_server<<"Server: WARNING: Player digged"
2651                                                                         <<" with impossible material + tool"
2652                                                                         <<" combination"<<std::endl;
2653                                                 }
2654
2655                                                 bool weared_out = titem->addWear(prop.wear);
2656
2657                                                 if(weared_out)
2658                                                 {
2659                                                         mlist->deleteItem(item_i);
2660                                                 }
2661                                         }
2662                                 }
2663
2664                                 /*
2665                                         Add dug item to inventory
2666                                 */
2667
2668                                 InventoryItem *item = NULL;
2669
2670                                 if(mineral != MINERAL_NONE)
2671                                         item = getDiggedMineralItem(mineral);
2672
2673                                 // If not mineral
2674                                 if(item == NULL)
2675                                 {
2676                                         std::string &dug_s = content_features(material).dug_item;
2677                                         if(dug_s != "")
2678                                         {
2679                                                 std::istringstream is(dug_s, std::ios::binary);
2680                                                 item = InventoryItem::deSerialize(is);
2681                                         }
2682                                 }
2683
2684                                 if(item != NULL)
2685                                 {
2686                                         // Add a item to inventory
2687                                         player->inventory.addItem("main", item);
2688
2689                                         // Send inventory
2690                                         UpdateCrafting(player->peer_id);
2691                                         SendInventory(player->peer_id);
2692                                 }
2693                         }
2694
2695                         /*
2696                                 Remove the node
2697                                 (this takes some time so it is done after the quick stuff)
2698                         */
2699                         {
2700                                 MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2701
2702                                 m_env.getMap().removeNodeAndUpdate(p_under, modified_blocks);
2703                         }
2704                         /*
2705                                 Set blocks not sent to far players
2706                         */
2707                         for(core::list<u16>::Iterator
2708                                         i = far_players.begin();
2709                                         i != far_players.end(); i++)
2710                         {
2711                                 u16 peer_id = *i;
2712                                 RemoteClient *client = getClient(peer_id);
2713                                 if(client==NULL)
2714                                         continue;
2715                                 client->SetBlocksNotSent(modified_blocks);
2716                         }
2717                 }
2718
2719                 /*
2720                         1: place block
2721                 */
2722                 else if(action == 1)
2723                 {
2724
2725                         InventoryList *ilist = player->inventory.getList("main");
2726                         if(ilist == NULL)
2727                                 return;
2728
2729                         // Get item
2730                         InventoryItem *item = ilist->getItem(item_i);
2731
2732                         // If there is no item, it is not possible to add it anywhere
2733                         if(item == NULL)
2734                                 return;
2735
2736                         /*
2737                                 Handle material items
2738                         */
2739                         if(std::string("MaterialItem") == item->getName())
2740                         {
2741                                 try{
2742                                         // Don't add a node if this is not a free space
2743                                         MapNode n2 = m_env.getMap().getNode(p_over);
2744                                         bool no_enough_privs =
2745                                                         ((getPlayerPrivs(player) & PRIV_BUILD)==0);
2746                                         if(no_enough_privs)
2747                                                 dstream<<"Player "<<player->getName()<<" cannot add node"
2748                                                         <<" because privileges are "<<getPlayerPrivs(player)
2749                                                         <<std::endl;
2750
2751                                         if(content_features(n2).buildable_to == false
2752                                                 || no_enough_privs)
2753                                         {
2754                                                 // Client probably has wrong data.
2755                                                 // Set block not sent, so that client will get
2756                                                 // a valid one.
2757                                                 dstream<<"Client "<<peer_id<<" tried to place"
2758                                                                 <<" node in invalid position; setting"
2759                                                                 <<" MapBlock not sent."<<std::endl;
2760                                                 RemoteClient *client = getClient(peer_id);
2761                                                 v3s16 blockpos = getNodeBlockPos(p_over);
2762                                                 client->SetBlockNotSent(blockpos);
2763                                                 return;
2764                                         }
2765                                 }
2766                                 catch(InvalidPositionException &e)
2767                                 {
2768                                         derr_server<<"Server: Ignoring ADDNODE: Node not found"
2769                                                         <<" Adding block to emerge queue."
2770                                                         <<std::endl;
2771                                         m_emerge_queue.addBlock(peer_id,
2772                                                         getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2773                                         return;
2774                                 }
2775
2776                                 // Reset build time counter
2777                                 getClient(peer->id)->m_time_from_building = 0.0;
2778
2779                                 // Create node data
2780                                 MaterialItem *mitem = (MaterialItem*)item;
2781                                 MapNode n;
2782                                 n.setContent(mitem->getMaterial());
2783
2784                                 // Calculate direction for wall mounted stuff
2785                                 if(content_features(n).wall_mounted)
2786                                         n.param2 = packDir(p_under - p_over);
2787
2788                                 // Calculate the direction for furnaces and chests and stuff
2789                                 if(content_features(n).param_type == CPT_FACEDIR_SIMPLE)
2790                                 {
2791                                         v3f playerpos = player->getPosition();
2792                                         v3f blockpos = intToFloat(p_over, BS) - playerpos;
2793                                         blockpos = blockpos.normalize();
2794                                         n.param1 = 0;
2795                                         if (fabs(blockpos.X) > fabs(blockpos.Z)) {
2796                                                 if (blockpos.X < 0)
2797                                                         n.param1 = 3;
2798                                                 else
2799                                                         n.param1 = 1;
2800                                         } else {
2801                                                 if (blockpos.Z < 0)
2802                                                         n.param1 = 2;
2803                                                 else
2804                                                         n.param1 = 0;
2805                                         }
2806                                 }
2807
2808                                 /*
2809                                         Send to all close-by players
2810                                 */
2811                                 core::list<u16> far_players;
2812                                 sendAddNode(p_over, n, 0, &far_players, 30);
2813
2814                                 /*
2815                                         Handle inventory
2816                                 */
2817                                 InventoryList *ilist = player->inventory.getList("main");
2818                                 if(g_settings.getBool("creative_mode") == false && ilist)
2819                                 {
2820                                         // Remove from inventory and send inventory
2821                                         if(mitem->getCount() == 1)
2822                                                 ilist->deleteItem(item_i);
2823                                         else
2824                                                 mitem->remove(1);
2825                                         // Send inventory
2826                                         UpdateCrafting(peer_id);
2827                                         SendInventory(peer_id);
2828                                 }
2829
2830                                 /*
2831                                         Add node.
2832
2833                                         This takes some time so it is done after the quick stuff
2834                                 */
2835                                 core::map<v3s16, MapBlock*> modified_blocks;
2836                                 {
2837                                         MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2838
2839                                         m_env.getMap().addNodeAndUpdate(p_over, n, modified_blocks);
2840                                 }
2841                                 /*
2842                                         Set blocks not sent to far players
2843                                 */
2844                                 for(core::list<u16>::Iterator
2845                                                 i = far_players.begin();
2846                                                 i != far_players.end(); i++)
2847                                 {
2848                                         u16 peer_id = *i;
2849                                         RemoteClient *client = getClient(peer_id);
2850                                         if(client==NULL)
2851                                                 continue;
2852                                         client->SetBlocksNotSent(modified_blocks);
2853                                 }
2854
2855                                 /*
2856                                         Calculate special events
2857                                 */
2858
2859                                 /*if(n.d == CONTENT_MESE)
2860                                 {
2861                                         u32 count = 0;
2862                                         for(s16 z=-1; z<=1; z++)
2863                                         for(s16 y=-1; y<=1; y++)
2864                                         for(s16 x=-1; x<=1; x++)
2865                                         {
2866
2867                                         }
2868                                 }*/
2869                         }
2870                         /*
2871                                 Place other item (not a block)
2872                         */
2873                         else
2874                         {
2875                                 v3s16 blockpos = getNodeBlockPos(p_over);
2876
2877                                 /*
2878                                         Check that the block is loaded so that the item
2879                                         can properly be added to the static list too
2880                                 */
2881                                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
2882                                 if(block==NULL)
2883                                 {
2884                                         derr_server<<"Error while placing object: "
2885                                                         "block not found"<<std::endl;
2886                                         return;
2887                                 }
2888
2889                                 dout_server<<"Placing a miscellaneous item on map"
2890                                                 <<std::endl;
2891
2892                                 // Calculate a position for it
2893                                 v3f pos = intToFloat(p_over, BS);
2894                                 //pos.Y -= BS*0.45;
2895                                 pos.Y -= BS*0.25; // let it drop a bit
2896                                 // Randomize a bit
2897                                 pos.X += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2898                                 pos.Z += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2899
2900                                 /*
2901                                         Create the object
2902                                 */
2903                                 ServerActiveObject *obj = item->createSAO(&m_env, 0, pos);
2904
2905                                 if(obj == NULL)
2906                                 {
2907                                         derr_server<<"WARNING: item resulted in NULL object, "
2908                                                         <<"not placing onto map"
2909                                                         <<std::endl;
2910                                 }
2911                                 else
2912                                 {
2913                                         // Add the object to the environment
2914                                         m_env.addActiveObject(obj);
2915
2916                                         dout_server<<"Placed object"<<std::endl;
2917
2918                                         if(g_settings.getBool("creative_mode") == false)
2919                                         {
2920                                                 // Delete the right amount of items from the slot
2921                                                 u16 dropcount = item->getDropCount();
2922
2923                                                 // Delete item if all gone
2924                                                 if(item->getCount() <= dropcount)
2925                                                 {
2926                                                         if(item->getCount() < dropcount)
2927                                                                 dstream<<"WARNING: Server: dropped more items"
2928                                                                                 <<" than the slot contains"<<std::endl;
2929
2930                                                         InventoryList *ilist = player->inventory.getList("main");
2931                                                         if(ilist)
2932                                                                 // Remove from inventory and send inventory
2933                                                                 ilist->deleteItem(item_i);
2934                                                 }
2935                                                 // Else decrement it
2936                                                 else
2937                                                         item->remove(dropcount);
2938
2939                                                 // Send inventory
2940                                                 UpdateCrafting(peer_id);
2941                                                 SendInventory(peer_id);
2942                                         }
2943                                 }
2944                         }
2945
2946                 } // action == 1
2947
2948                 /*
2949                         Catch invalid actions
2950                 */
2951                 else
2952                 {
2953                         derr_server<<"WARNING: Server: Invalid action "
2954                                         <<action<<std::endl;
2955                 }
2956         }
2957 #if 0
2958         else if(command == TOSERVER_RELEASE)
2959         {
2960                 if(datasize < 3)
2961                         return;
2962                 /*
2963                         length: 3
2964                         [0] u16 command
2965                         [2] u8 button
2966                 */
2967                 dstream<<"TOSERVER_RELEASE ignored"<<std::endl;
2968         }
2969 #endif
2970         else if(command == TOSERVER_SIGNTEXT)
2971         {
2972                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2973                         return;
2974                 /*
2975                         u16 command
2976                         v3s16 blockpos
2977                         s16 id
2978                         u16 textlen
2979                         textdata
2980                 */
2981                 std::string datastring((char*)&data[2], datasize-2);
2982                 std::istringstream is(datastring, std::ios_base::binary);
2983                 u8 buf[6];
2984                 // Read stuff
2985                 is.read((char*)buf, 6);
2986                 v3s16 blockpos = readV3S16(buf);
2987                 is.read((char*)buf, 2);
2988                 s16 id = readS16(buf);
2989                 is.read((char*)buf, 2);
2990                 u16 textlen = readU16(buf);
2991                 std::string text;
2992                 for(u16 i=0; i<textlen; i++)
2993                 {
2994                         is.read((char*)buf, 1);
2995                         text += (char)buf[0];
2996                 }
2997
2998                 MapBlock *block = NULL;
2999                 try
3000                 {
3001                         block = m_env.getMap().getBlockNoCreate(blockpos);
3002                 }
3003                 catch(InvalidPositionException &e)
3004                 {
3005                         derr_server<<"Error while setting sign text: "
3006                                         "block not found"<<std::endl;
3007                         return;
3008                 }
3009
3010                 MapBlockObject *obj = block->getObject(id);
3011                 if(obj == NULL)
3012                 {
3013                         derr_server<<"Error while setting sign text: "
3014                                         "object not found"<<std::endl;
3015                         return;
3016                 }
3017
3018                 if(obj->getTypeId() != MAPBLOCKOBJECT_TYPE_SIGN)
3019                 {
3020                         derr_server<<"Error while setting sign text: "
3021                                         "object is not a sign"<<std::endl;
3022                         return;
3023                 }
3024
3025                 ((SignObject*)obj)->setText(text);
3026
3027                 obj->getBlock()->setChangedFlag();
3028         }
3029         else if(command == TOSERVER_SIGNNODETEXT)
3030         {
3031                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
3032                         return;
3033                 /*
3034                         u16 command
3035                         v3s16 p
3036                         u16 textlen
3037                         textdata
3038                 */
3039                 std::string datastring((char*)&data[2], datasize-2);
3040                 std::istringstream is(datastring, std::ios_base::binary);
3041                 u8 buf[6];
3042                 // Read stuff
3043                 is.read((char*)buf, 6);
3044                 v3s16 p = readV3S16(buf);
3045                 is.read((char*)buf, 2);
3046                 u16 textlen = readU16(buf);
3047                 std::string text;
3048                 for(u16 i=0; i<textlen; i++)
3049                 {
3050                         is.read((char*)buf, 1);
3051                         text += (char)buf[0];
3052                 }
3053
3054                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3055                 if(!meta)
3056                         return;
3057                 if(meta->typeId() != CONTENT_SIGN_WALL)
3058                         return;
3059                 SignNodeMetadata *signmeta = (SignNodeMetadata*)meta;
3060                 signmeta->setText(text);
3061
3062                 v3s16 blockpos = getNodeBlockPos(p);
3063                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
3064                 if(block)
3065                 {
3066                         block->setChangedFlag();
3067                 }
3068
3069                 for(core::map<u16, RemoteClient*>::Iterator
3070                         i = m_clients.getIterator();
3071                         i.atEnd()==false; i++)
3072                 {
3073                         RemoteClient *client = i.getNode()->getValue();
3074                         client->SetBlockNotSent(blockpos);
3075                 }
3076         }
3077         else if(command == TOSERVER_INVENTORY_ACTION)
3078         {
3079                 /*// Ignore inventory changes if in creative mode
3080                 if(g_settings.getBool("creative_mode") == true)
3081                 {
3082                         dstream<<"TOSERVER_INVENTORY_ACTION: ignoring in creative mode"
3083                                         <<std::endl;
3084                         return;
3085                 }*/
3086                 // Strip command and create a stream
3087                 std::string datastring((char*)&data[2], datasize-2);
3088                 dstream<<"TOSERVER_INVENTORY_ACTION: data="<<datastring<<std::endl;
3089                 std::istringstream is(datastring, std::ios_base::binary);
3090                 // Create an action
3091                 InventoryAction *a = InventoryAction::deSerialize(is);
3092                 if(a != NULL)
3093                 {
3094                         // Create context
3095                         InventoryContext c;
3096                         c.current_player = player;
3097
3098                         /*
3099                                 Handle craftresult specially if not in creative mode
3100                         */
3101                         bool disable_action = false;
3102                         if(a->getType() == IACTION_MOVE
3103                                         && g_settings.getBool("creative_mode") == false)
3104                         {
3105                                 IMoveAction *ma = (IMoveAction*)a;
3106                                 if(ma->to_inv == "current_player" &&
3107                                                 ma->from_inv == "current_player")
3108                                 {
3109                                         InventoryList *rlist = player->inventory.getList("craftresult");
3110                                         assert(rlist);
3111                                         InventoryList *clist = player->inventory.getList("craft");
3112                                         assert(clist);
3113                                         InventoryList *mlist = player->inventory.getList("main");
3114                                         assert(mlist);
3115                                         /*
3116                                                 Craftresult is no longer preview if something
3117                                                 is moved into it
3118                                         */
3119                                         if(ma->to_list == "craftresult"
3120                                                         && ma->from_list != "craftresult")
3121                                         {
3122                                                 // If it currently is a preview, remove
3123                                                 // its contents
3124                                                 if(player->craftresult_is_preview)
3125                                                 {
3126                                                         rlist->deleteItem(0);
3127                                                 }
3128                                                 player->craftresult_is_preview = false;
3129                                         }
3130                                         /*
3131                                                 Crafting takes place if this condition is true.
3132                                         */
3133                                         if(player->craftresult_is_preview &&
3134                                                         ma->from_list == "craftresult")
3135                                         {
3136                                                 player->craftresult_is_preview = false;
3137                                                 clist->decrementMaterials(1);
3138                                         }
3139                                         /*
3140                                                 If the craftresult is placed on itself, move it to
3141                                                 main inventory instead of doing the action
3142                                         */
3143                                         if(ma->to_list == "craftresult"
3144                                                         && ma->from_list == "craftresult")
3145                                         {
3146                                                 disable_action = true;
3147
3148                                                 InventoryItem *item1 = rlist->changeItem(0, NULL);
3149                                                 mlist->addItem(item1);
3150                                         }
3151                                 }
3152                         }
3153
3154                         if(disable_action == false)
3155                         {
3156                                 // Feed action to player inventory
3157                                 a->apply(&c, this);
3158                                 // Eat the action
3159                                 delete a;
3160                         }
3161                         else
3162                         {
3163                                 // Send inventory
3164                                 UpdateCrafting(player->peer_id);
3165                                 SendInventory(player->peer_id);
3166                         }
3167                 }
3168                 else
3169                 {
3170                         dstream<<"TOSERVER_INVENTORY_ACTION: "
3171                                         <<"InventoryAction::deSerialize() returned NULL"
3172                                         <<std::endl;
3173                 }
3174         }
3175         else if(command == TOSERVER_CHAT_MESSAGE)
3176         {
3177                 /*
3178                         u16 command
3179                         u16 length
3180                         wstring message
3181                 */
3182                 u8 buf[6];
3183                 std::string datastring((char*)&data[2], datasize-2);
3184                 std::istringstream is(datastring, std::ios_base::binary);
3185
3186                 // Read stuff
3187                 is.read((char*)buf, 2);
3188                 u16 len = readU16(buf);
3189
3190                 std::wstring message;
3191                 for(u16 i=0; i<len; i++)
3192                 {
3193                         is.read((char*)buf, 2);
3194                         message += (wchar_t)readU16(buf);
3195                 }
3196
3197                 // Get player name of this client
3198                 std::wstring name = narrow_to_wide(player->getName());
3199
3200                 // Line to send to players
3201                 std::wstring line;
3202                 // Whether to send to the player that sent the line
3203                 bool send_to_sender = false;
3204                 // Whether to send to other players
3205                 bool send_to_others = false;
3206
3207                 // Local player gets all privileges regardless of
3208                 // what's set on their account.
3209                 u64 privs = getPlayerPrivs(player);
3210
3211                 // Parse commands
3212                 std::wstring commandprefix = L"/#";
3213                 if(message.substr(0, commandprefix.size()) == commandprefix)
3214                 {
3215                         line += L"Server: ";
3216
3217                         message = message.substr(commandprefix.size());
3218
3219                         WStrfnd f1(message);
3220                         f1.next(L" "); // Skip over /#whatever
3221                         std::wstring paramstring = f1.next(L"");
3222
3223                         ServerCommandContext *ctx = new ServerCommandContext(
3224                                 str_split(message, L' '),
3225                                 paramstring,
3226                                 this,
3227                                 &m_env,
3228                                 player,
3229                                 privs);
3230
3231                         line += processServerCommand(ctx);
3232                         send_to_sender = ctx->flags & 1;
3233                         send_to_others = ctx->flags & 2;
3234                         delete ctx;
3235
3236                 }
3237                 else
3238                 {
3239                         if(privs & PRIV_SHOUT)
3240                         {
3241                                 line += L"<";
3242                                 line += name;
3243                                 line += L"> ";
3244                                 line += message;
3245                                 send_to_others = true;
3246                         }
3247                         else
3248                         {
3249                                 line += L"Server: You are not allowed to shout";
3250                                 send_to_sender = true;
3251                         }
3252                 }
3253
3254                 if(line != L"")
3255                 {
3256                         dstream<<"CHAT: "<<wide_to_narrow(line)<<std::endl;
3257
3258                         /*
3259                                 Send the message to clients
3260                         */
3261                         for(core::map<u16, RemoteClient*>::Iterator
3262                                 i = m_clients.getIterator();
3263                                 i.atEnd() == false; i++)
3264                         {
3265                                 // Get client and check that it is valid
3266                                 RemoteClient *client = i.getNode()->getValue();
3267                                 assert(client->peer_id == i.getNode()->getKey());
3268                                 if(client->serialization_version == SER_FMT_VER_INVALID)
3269                                         continue;
3270
3271                                 // Filter recipient
3272                                 bool sender_selected = (peer_id == client->peer_id);
3273                                 if(sender_selected == true && send_to_sender == false)
3274                                         continue;
3275                                 if(sender_selected == false && send_to_others == false)
3276                                         continue;
3277
3278                                 SendChatMessage(client->peer_id, line);
3279                         }
3280                 }
3281         }
3282         else if(command == TOSERVER_DAMAGE)
3283         {
3284                 if(g_settings.getBool("enable_damage"))
3285                 {
3286                         std::string datastring((char*)&data[2], datasize-2);
3287                         std::istringstream is(datastring, std::ios_base::binary);
3288                         u8 damage = readU8(is);
3289                         if(player->hp > damage)
3290                         {
3291                                 player->hp -= damage;
3292                         }
3293                         else
3294                         {
3295                                 player->hp = 0;
3296
3297                                 dstream<<"TODO: Server: TOSERVER_HP_DECREMENT: Player dies"
3298                                                 <<std::endl;
3299
3300                                 v3f pos = findSpawnPos(m_env.getServerMap());
3301                                 player->setPosition(pos);
3302                                 player->hp = 20;
3303                                 SendMovePlayer(player);
3304                                 SendPlayerHP(player);
3305
3306                                 //TODO: Throw items around
3307                         }
3308                 }
3309
3310                 SendPlayerHP(player);
3311         }
3312         else if(command == TOSERVER_PASSWORD)
3313         {
3314                 /*
3315                         [0] u16 TOSERVER_PASSWORD
3316                         [2] u8[28] old password
3317                         [30] u8[28] new password
3318                 */
3319
3320                 if(datasize != 2+PASSWORD_SIZE*2)
3321                         return;
3322                 /*char password[PASSWORD_SIZE];
3323                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3324                         password[i] = data[2+i];
3325                 password[PASSWORD_SIZE-1] = 0;*/
3326                 std::string oldpwd;
3327                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3328                 {
3329                         char c = data[2+i];
3330                         if(c == 0)
3331                                 break;
3332                         oldpwd += c;
3333                 }
3334                 std::string newpwd;
3335                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3336                 {
3337                         char c = data[2+PASSWORD_SIZE+i];
3338                         if(c == 0)
3339                                 break;
3340                         newpwd += c;
3341                 }
3342
3343                 std::string playername = player->getName();
3344
3345                 if(m_authmanager.exists(playername) == false)
3346                 {
3347                         dstream<<"Server: playername not found in authmanager"<<std::endl;
3348                         // Wrong old password supplied!!
3349                         SendChatMessage(peer_id, L"playername not found in authmanager");
3350                         return;
3351                 }
3352
3353                 std::string checkpwd = m_authmanager.getPassword(playername);
3354
3355                 if(oldpwd != checkpwd)
3356                 {
3357                         dstream<<"Server: invalid old password"<<std::endl;
3358                         // Wrong old password supplied!!
3359                         SendChatMessage(peer_id, L"Invalid old password supplied. Password NOT changed.");
3360                         return;
3361                 }
3362
3363                 m_authmanager.setPassword(playername, newpwd);
3364
3365                 dstream<<"Server: password change successful for "<<playername
3366                                 <<std::endl;
3367                 SendChatMessage(peer_id, L"Password change successful");
3368         }
3369         else
3370         {
3371                 derr_server<<"WARNING: Server::ProcessData(): Ignoring "
3372                                 "unknown command "<<command<<std::endl;
3373         }
3374
3375         } //try
3376         catch(SendFailedException &e)
3377         {
3378                 derr_server<<"Server::ProcessData(): SendFailedException: "
3379                                 <<"what="<<e.what()
3380                                 <<std::endl;
3381         }
3382 }
3383
3384 void Server::onMapEditEvent(MapEditEvent *event)
3385 {
3386         //dstream<<"Server::onMapEditEvent()"<<std::endl;
3387         if(m_ignore_map_edit_events)
3388                 return;
3389         MapEditEvent *e = event->clone();
3390         m_unsent_map_edit_queue.push_back(e);
3391 }
3392
3393 Inventory* Server::getInventory(InventoryContext *c, std::string id)
3394 {
3395         if(id == "current_player")
3396         {
3397                 assert(c->current_player);
3398                 return &(c->current_player->inventory);
3399         }
3400
3401         Strfnd fn(id);
3402         std::string id0 = fn.next(":");
3403
3404         if(id0 == "nodemeta")
3405         {
3406                 v3s16 p;
3407                 p.X = stoi(fn.next(","));
3408                 p.Y = stoi(fn.next(","));
3409                 p.Z = stoi(fn.next(","));
3410                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3411                 if(meta)
3412                         return meta->getInventory();
3413                 dstream<<"nodemeta at ("<<p.X<<","<<p.Y<<","<<p.Z<<"): "
3414                                 <<"no metadata found"<<std::endl;
3415                 return NULL;
3416         }
3417
3418         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3419         return NULL;
3420 }
3421 void Server::inventoryModified(InventoryContext *c, std::string id)
3422 {
3423         if(id == "current_player")
3424         {
3425                 assert(c->current_player);
3426                 // Send inventory
3427                 UpdateCrafting(c->current_player->peer_id);
3428                 SendInventory(c->current_player->peer_id);
3429                 return;
3430         }
3431
3432         Strfnd fn(id);
3433         std::string id0 = fn.next(":");
3434
3435         if(id0 == "nodemeta")
3436         {
3437                 v3s16 p;
3438                 p.X = stoi(fn.next(","));
3439                 p.Y = stoi(fn.next(","));
3440                 p.Z = stoi(fn.next(","));
3441                 v3s16 blockpos = getNodeBlockPos(p);
3442
3443                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3444                 if(meta)
3445                         meta->inventoryModified();
3446
3447                 for(core::map<u16, RemoteClient*>::Iterator
3448                         i = m_clients.getIterator();
3449                         i.atEnd()==false; i++)
3450                 {
3451                         RemoteClient *client = i.getNode()->getValue();
3452                         client->SetBlockNotSent(blockpos);
3453                 }
3454
3455                 return;
3456         }
3457
3458         dstream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3459 }
3460
3461 core::list<PlayerInfo> Server::getPlayerInfo()
3462 {
3463         DSTACK(__FUNCTION_NAME);
3464         JMutexAutoLock envlock(m_env_mutex);
3465         JMutexAutoLock conlock(m_con_mutex);
3466
3467         core::list<PlayerInfo> list;
3468
3469         core::list<Player*> players = m_env.getPlayers();
3470
3471         core::list<Player*>::Iterator i;
3472         for(i = players.begin();
3473                         i != players.end(); i++)
3474         {
3475                 PlayerInfo info;
3476
3477                 Player *player = *i;
3478
3479                 try{
3480                         con::Peer *peer = m_con.GetPeer(player->peer_id);
3481                         // Copy info from peer to info struct
3482                         info.id = peer->id;
3483                         info.address = peer->address;
3484                         info.avg_rtt = peer->avg_rtt;
3485                 }
3486                 catch(con::PeerNotFoundException &e)
3487                 {
3488                         // Set dummy peer info
3489                         info.id = 0;
3490                         info.address = Address(0,0,0,0,0);
3491                         info.avg_rtt = 0.0;
3492                 }
3493
3494                 snprintf(info.name, PLAYERNAME_SIZE, "%s", player->getName());
3495                 info.position = player->getPosition();
3496
3497                 list.push_back(info);
3498         }
3499
3500         return list;
3501 }
3502
3503
3504 void Server::peerAdded(con::Peer *peer)
3505 {
3506         DSTACK(__FUNCTION_NAME);
3507         dout_server<<"Server::peerAdded(): peer->id="
3508                         <<peer->id<<std::endl;
3509
3510         PeerChange c;
3511         c.type = PEER_ADDED;
3512         c.peer_id = peer->id;
3513         c.timeout = false;
3514         m_peer_change_queue.push_back(c);
3515 }
3516
3517 void Server::deletingPeer(con::Peer *peer, bool timeout)
3518 {
3519         DSTACK(__FUNCTION_NAME);
3520         dout_server<<"Server::deletingPeer(): peer->id="
3521                         <<peer->id<<", timeout="<<timeout<<std::endl;
3522
3523         PeerChange c;
3524         c.type = PEER_REMOVED;
3525         c.peer_id = peer->id;
3526         c.timeout = timeout;
3527         m_peer_change_queue.push_back(c);
3528 }
3529
3530 /*
3531         Static send methods
3532 */
3533
3534 void Server::SendHP(con::Connection &con, u16 peer_id, u8 hp)
3535 {
3536         DSTACK(__FUNCTION_NAME);
3537         std::ostringstream os(std::ios_base::binary);
3538
3539         writeU16(os, TOCLIENT_HP);
3540         writeU8(os, hp);
3541
3542         // Make data buffer
3543         std::string s = os.str();
3544         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3545         // Send as reliable
3546         con.Send(peer_id, 0, data, true);
3547 }
3548
3549 void Server::SendAccessDenied(con::Connection &con, u16 peer_id,
3550                 const std::wstring &reason)
3551 {
3552         DSTACK(__FUNCTION_NAME);
3553         std::ostringstream os(std::ios_base::binary);
3554
3555         writeU16(os, TOCLIENT_ACCESS_DENIED);
3556         os<<serializeWideString(reason);
3557
3558         // Make data buffer
3559         std::string s = os.str();
3560         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3561         // Send as reliable
3562         con.Send(peer_id, 0, data, true);
3563 }
3564
3565 /*
3566         Non-static send methods
3567 */
3568
3569 void Server::SendObjectData(float dtime)
3570 {
3571         DSTACK(__FUNCTION_NAME);
3572
3573         core::map<v3s16, bool> stepped_blocks;
3574
3575         for(core::map<u16, RemoteClient*>::Iterator
3576                 i = m_clients.getIterator();
3577                 i.atEnd() == false; i++)
3578         {
3579                 u16 peer_id = i.getNode()->getKey();
3580                 RemoteClient *client = i.getNode()->getValue();
3581                 assert(client->peer_id == peer_id);
3582
3583                 if(client->serialization_version == SER_FMT_VER_INVALID)
3584                         continue;
3585
3586                 client->SendObjectData(this, dtime, stepped_blocks);
3587         }
3588 }
3589
3590 void Server::SendPlayerInfos()
3591 {
3592         DSTACK(__FUNCTION_NAME);
3593
3594         //JMutexAutoLock envlock(m_env_mutex);
3595
3596         // Get connected players
3597         core::list<Player*> players = m_env.getPlayers(true);
3598
3599         u32 player_count = players.getSize();
3600         u32 datasize = 2+(2+PLAYERNAME_SIZE)*player_count;
3601
3602         SharedBuffer<u8> data(datasize);
3603         writeU16(&data[0], TOCLIENT_PLAYERINFO);
3604
3605         u32 start = 2;
3606         core::list<Player*>::Iterator i;
3607         for(i = players.begin();
3608                         i != players.end(); i++)
3609         {
3610                 Player *player = *i;
3611
3612                 /*dstream<<"Server sending player info for player with "
3613                                 "peer_id="<<player->peer_id<<std::endl;*/
3614
3615                 writeU16(&data[start], player->peer_id);
3616                 memset((char*)&data[start+2], 0, PLAYERNAME_SIZE);
3617                 snprintf((char*)&data[start+2], PLAYERNAME_SIZE, "%s", player->getName());
3618                 start += 2+PLAYERNAME_SIZE;
3619         }
3620
3621         //JMutexAutoLock conlock(m_con_mutex);
3622
3623         // Send as reliable
3624         m_con.SendToAll(0, data, true);
3625 }
3626
3627 void Server::SendInventory(u16 peer_id)
3628 {
3629         DSTACK(__FUNCTION_NAME);
3630
3631         Player* player = m_env.getPlayer(peer_id);
3632         assert(player);
3633
3634         /*
3635                 Serialize it
3636         */
3637
3638         std::ostringstream os;
3639         //os.imbue(std::locale("C"));
3640
3641         player->inventory.serialize(os);
3642
3643         std::string s = os.str();
3644
3645         SharedBuffer<u8> data(s.size()+2);
3646         writeU16(&data[0], TOCLIENT_INVENTORY);
3647         memcpy(&data[2], s.c_str(), s.size());
3648
3649         // Send as reliable
3650         m_con.Send(peer_id, 0, data, true);
3651 }
3652
3653 void Server::SendChatMessage(u16 peer_id, const std::wstring &message)
3654 {
3655         DSTACK(__FUNCTION_NAME);
3656
3657         std::ostringstream os(std::ios_base::binary);
3658         u8 buf[12];
3659
3660         // Write command
3661         writeU16(buf, TOCLIENT_CHAT_MESSAGE);
3662         os.write((char*)buf, 2);
3663
3664         // Write length
3665         writeU16(buf, message.size());
3666         os.write((char*)buf, 2);
3667
3668         // Write string
3669         for(u32 i=0; i<message.size(); i++)
3670         {
3671                 u16 w = message[i];
3672                 writeU16(buf, w);
3673                 os.write((char*)buf, 2);
3674         }
3675
3676         // Make data buffer
3677         std::string s = os.str();
3678         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3679         // Send as reliable
3680         m_con.Send(peer_id, 0, data, true);
3681 }
3682
3683 void Server::BroadcastChatMessage(const std::wstring &message)
3684 {
3685         for(core::map<u16, RemoteClient*>::Iterator
3686                 i = m_clients.getIterator();
3687                 i.atEnd() == false; i++)
3688         {
3689                 // Get client and check that it is valid
3690                 RemoteClient *client = i.getNode()->getValue();
3691                 assert(client->peer_id == i.getNode()->getKey());
3692                 if(client->serialization_version == SER_FMT_VER_INVALID)
3693                         continue;
3694
3695                 SendChatMessage(client->peer_id, message);
3696         }
3697 }
3698
3699 void Server::SendPlayerHP(Player *player)
3700 {
3701         SendHP(m_con, player->peer_id, player->hp);
3702 }
3703
3704 void Server::SendMovePlayer(Player *player)
3705 {
3706         DSTACK(__FUNCTION_NAME);
3707         std::ostringstream os(std::ios_base::binary);
3708
3709         writeU16(os, TOCLIENT_MOVE_PLAYER);
3710         writeV3F1000(os, player->getPosition());
3711         writeF1000(os, player->getPitch());
3712         writeF1000(os, player->getYaw());
3713
3714         {
3715                 v3f pos = player->getPosition();
3716                 f32 pitch = player->getPitch();
3717                 f32 yaw = player->getYaw();
3718                 dstream<<"Server sending TOCLIENT_MOVE_PLAYER"
3719                                 <<" pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
3720                                 <<" pitch="<<pitch
3721                                 <<" yaw="<<yaw
3722                                 <<std::endl;
3723         }
3724
3725         // Make data buffer
3726         std::string s = os.str();
3727         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3728         // Send as reliable
3729         m_con.Send(player->peer_id, 0, data, true);
3730 }
3731
3732 void Server::sendRemoveNode(v3s16 p, u16 ignore_id,
3733         core::list<u16> *far_players, float far_d_nodes)
3734 {
3735         float maxd = far_d_nodes*BS;
3736         v3f p_f = intToFloat(p, BS);
3737
3738         // Create packet
3739         u32 replysize = 8;
3740         SharedBuffer<u8> reply(replysize);
3741         writeU16(&reply[0], TOCLIENT_REMOVENODE);
3742         writeS16(&reply[2], p.X);
3743         writeS16(&reply[4], p.Y);
3744         writeS16(&reply[6], p.Z);
3745
3746         for(core::map<u16, RemoteClient*>::Iterator
3747                 i = m_clients.getIterator();
3748                 i.atEnd() == false; i++)
3749         {
3750                 // Get client and check that it is valid
3751                 RemoteClient *client = i.getNode()->getValue();
3752                 assert(client->peer_id == i.getNode()->getKey());
3753                 if(client->serialization_version == SER_FMT_VER_INVALID)
3754                         continue;
3755
3756                 // Don't send if it's the same one
3757                 if(client->peer_id == ignore_id)
3758                         continue;
3759
3760                 if(far_players)
3761                 {
3762                         // Get player
3763                         Player *player = m_env.getPlayer(client->peer_id);
3764                         if(player)
3765                         {
3766                                 // If player is far away, only set modified blocks not sent
3767                                 v3f player_pos = player->getPosition();
3768                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3769                                 {
3770                                         far_players->push_back(client->peer_id);
3771                                         continue;
3772                                 }
3773                         }
3774                 }
3775
3776                 // Send as reliable
3777                 m_con.Send(client->peer_id, 0, reply, true);
3778         }
3779 }
3780
3781 void Server::sendAddNode(v3s16 p, MapNode n, u16 ignore_id,
3782                 core::list<u16> *far_players, float far_d_nodes)
3783 {
3784         float maxd = far_d_nodes*BS;
3785         v3f p_f = intToFloat(p, BS);
3786
3787         for(core::map<u16, RemoteClient*>::Iterator
3788                 i = m_clients.getIterator();
3789                 i.atEnd() == false; i++)
3790         {
3791                 // Get client and check that it is valid
3792                 RemoteClient *client = i.getNode()->getValue();
3793                 assert(client->peer_id == i.getNode()->getKey());
3794                 if(client->serialization_version == SER_FMT_VER_INVALID)
3795                         continue;
3796
3797                 // Don't send if it's the same one
3798                 if(client->peer_id == ignore_id)
3799                         continue;
3800
3801                 if(far_players)
3802                 {
3803                         // Get player
3804                         Player *player = m_env.getPlayer(client->peer_id);
3805                         if(player)
3806                         {
3807                                 // If player is far away, only set modified blocks not sent
3808                                 v3f player_pos = player->getPosition();
3809                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3810                                 {
3811                                         far_players->push_back(client->peer_id);
3812                                         continue;
3813                                 }
3814                         }
3815                 }
3816
3817                 // Create packet
3818                 u32 replysize = 8 + MapNode::serializedLength(client->serialization_version);
3819                 SharedBuffer<u8> reply(replysize);
3820                 writeU16(&reply[0], TOCLIENT_ADDNODE);
3821                 writeS16(&reply[2], p.X);
3822                 writeS16(&reply[4], p.Y);
3823                 writeS16(&reply[6], p.Z);
3824                 n.serialize(&reply[8], client->serialization_version);
3825
3826                 // Send as reliable
3827                 m_con.Send(client->peer_id, 0, reply, true);
3828         }
3829 }
3830
3831 void Server::setBlockNotSent(v3s16 p)
3832 {
3833         for(core::map<u16, RemoteClient*>::Iterator
3834                 i = m_clients.getIterator();
3835                 i.atEnd()==false; i++)
3836         {
3837                 RemoteClient *client = i.getNode()->getValue();
3838                 client->SetBlockNotSent(p);
3839         }
3840 }
3841
3842 void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver)
3843 {
3844         DSTACK(__FUNCTION_NAME);
3845
3846         v3s16 p = block->getPos();
3847
3848 #if 0
3849         // Analyze it a bit
3850         bool completely_air = true;
3851         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
3852         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
3853         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
3854         {
3855                 if(block->getNodeNoEx(v3s16(x0,y0,z0)).d != CONTENT_AIR)
3856                 {
3857                         completely_air = false;
3858                         x0 = y0 = z0 = MAP_BLOCKSIZE; // Break out
3859                 }
3860         }
3861
3862         // Print result
3863         dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<"): ";
3864         if(completely_air)
3865                 dstream<<"[completely air] ";
3866         dstream<<std::endl;
3867 #endif
3868
3869         /*
3870                 Create a packet with the block in the right format
3871         */
3872
3873         std::ostringstream os(std::ios_base::binary);
3874         block->serialize(os, ver);
3875         std::string s = os.str();
3876         SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
3877
3878         u32 replysize = 8 + blockdata.getSize();
3879         SharedBuffer<u8> reply(replysize);
3880         writeU16(&reply[0], TOCLIENT_BLOCKDATA);
3881         writeS16(&reply[2], p.X);
3882         writeS16(&reply[4], p.Y);
3883         writeS16(&reply[6], p.Z);
3884         memcpy(&reply[8], *blockdata, blockdata.getSize());
3885
3886         /*dstream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3887                         <<":  \tpacket size: "<<replysize<<std::endl;*/
3888
3889         /*
3890                 Send packet
3891         */
3892         m_con.Send(peer_id, 1, reply, true);
3893 }
3894
3895 void Server::SendBlocks(float dtime)
3896 {
3897         DSTACK(__FUNCTION_NAME);
3898
3899         JMutexAutoLock envlock(m_env_mutex);
3900         JMutexAutoLock conlock(m_con_mutex);
3901
3902         //TimeTaker timer("Server::SendBlocks");
3903
3904         core::array<PrioritySortedBlockTransfer> queue;
3905
3906         s32 total_sending = 0;
3907
3908         {
3909                 ScopeProfiler sp(&g_profiler, "Server: selecting blocks for sending");
3910
3911                 for(core::map<u16, RemoteClient*>::Iterator
3912                         i = m_clients.getIterator();
3913                         i.atEnd() == false; i++)
3914                 {
3915                         RemoteClient *client = i.getNode()->getValue();
3916                         assert(client->peer_id == i.getNode()->getKey());
3917
3918                         total_sending += client->SendingCount();
3919
3920                         if(client->serialization_version == SER_FMT_VER_INVALID)
3921                                 continue;
3922
3923                         client->GetNextBlocks(this, dtime, queue);
3924                 }
3925         }
3926
3927         // Sort.
3928         // Lowest priority number comes first.
3929         // Lowest is most important.
3930         queue.sort();
3931
3932         for(u32 i=0; i<queue.size(); i++)
3933         {
3934                 //TODO: Calculate limit dynamically
3935                 if(total_sending >= g_settings.getS32
3936                                 ("max_simultaneous_block_sends_server_total"))
3937                         break;
3938
3939                 PrioritySortedBlockTransfer q = queue[i];
3940
3941                 MapBlock *block = NULL;
3942                 try
3943                 {
3944                         block = m_env.getMap().getBlockNoCreate(q.pos);
3945                 }
3946                 catch(InvalidPositionException &e)
3947                 {
3948                         continue;
3949                 }
3950
3951                 RemoteClient *client = getClient(q.peer_id);
3952
3953                 SendBlockNoLock(q.peer_id, block, client->serialization_version);
3954
3955                 client->SentBlock(q.pos);
3956
3957                 total_sending++;
3958         }
3959 }
3960
3961 /*
3962         Something random
3963 */
3964
3965 void Server::UpdateCrafting(u16 peer_id)
3966 {
3967         DSTACK(__FUNCTION_NAME);
3968
3969         Player* player = m_env.getPlayer(peer_id);
3970         assert(player);
3971
3972         /*
3973                 Calculate crafting stuff
3974         */
3975         if(g_settings.getBool("creative_mode") == false)
3976         {
3977                 InventoryList *clist = player->inventory.getList("craft");
3978                 InventoryList *rlist = player->inventory.getList("craftresult");
3979
3980                 if(rlist->getUsedSlots() == 0)
3981                         player->craftresult_is_preview = true;
3982
3983                 if(rlist && player->craftresult_is_preview)
3984                 {
3985                         rlist->clearItems();
3986                 }
3987                 if(clist && rlist && player->craftresult_is_preview)
3988                 {
3989                         InventoryItem *items[9];
3990                         for(u16 i=0; i<9; i++)
3991                         {
3992                                 items[i] = clist->getItem(i);
3993                         }
3994
3995                         // Get result of crafting grid
3996                         InventoryItem *result = craft_get_result(items);
3997                         if(result)
3998                                 rlist->addItem(result);
3999                 }
4000
4001         } // if creative_mode == false
4002 }
4003
4004 RemoteClient* Server::getClient(u16 peer_id)
4005 {
4006         DSTACK(__FUNCTION_NAME);
4007         //JMutexAutoLock lock(m_con_mutex);
4008         core::map<u16, RemoteClient*>::Node *n;
4009         n = m_clients.find(peer_id);
4010         // A client should exist for all peers
4011         assert(n != NULL);
4012         return n->getValue();
4013 }
4014
4015 std::wstring Server::getStatusString()
4016 {
4017         std::wostringstream os(std::ios_base::binary);
4018         os<<L"# Server: ";
4019         // Version
4020         os<<L"version="<<narrow_to_wide(VERSION_STRING);
4021         // Uptime
4022         os<<L", uptime="<<m_uptime.get();
4023         // Information about clients
4024         os<<L", clients={";
4025         for(core::map<u16, RemoteClient*>::Iterator
4026                 i = m_clients.getIterator();
4027                 i.atEnd() == false; i++)
4028         {
4029                 // Get client and check that it is valid
4030                 RemoteClient *client = i.getNode()->getValue();
4031                 assert(client->peer_id == i.getNode()->getKey());
4032                 if(client->serialization_version == SER_FMT_VER_INVALID)
4033                         continue;
4034                 // Get player
4035                 Player *player = m_env.getPlayer(client->peer_id);
4036                 // Get name of player
4037                 std::wstring name = L"unknown";
4038                 if(player != NULL)
4039                         name = narrow_to_wide(player->getName());
4040                 // Add name to information string
4041                 os<<name<<L",";
4042         }
4043         os<<L"}";
4044         if(((ServerMap*)(&m_env.getMap()))->isSavingEnabled() == false)
4045                 os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled.";
4046         if(g_settings.get("motd") != "")
4047                 os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings.get("motd"));
4048         return os.str();
4049 }
4050
4051 v3f findSpawnPos(ServerMap &map)
4052 {
4053         //return v3f(50,50,50)*BS;
4054
4055         v2s16 nodepos;
4056         s16 groundheight = 0;
4057
4058 #if 0
4059         nodepos = v2s16(0,0);
4060         groundheight = 20;
4061 #endif
4062
4063 #if 1
4064         // Try to find a good place a few times
4065         for(s32 i=0; i<1000; i++)
4066         {
4067                 s32 range = 1 + i;
4068                 // We're going to try to throw the player to this position
4069                 nodepos = v2s16(-range + (myrand()%(range*2)),
4070                                 -range + (myrand()%(range*2)));
4071                 v2s16 sectorpos = getNodeSectorPos(nodepos);
4072                 // Get sector (NOTE: Don't get because it's slow)
4073                 //m_env.getMap().emergeSector(sectorpos);
4074                 // Get ground height at point (fallbacks to heightmap function)
4075                 groundheight = map.findGroundLevel(nodepos);
4076                 // Don't go underwater
4077                 if(groundheight < WATER_LEVEL)
4078                 {
4079                         //dstream<<"-> Underwater"<<std::endl;
4080                         continue;
4081                 }
4082                 // Don't go to high places
4083                 if(groundheight > WATER_LEVEL + 4)
4084                 {
4085                         //dstream<<"-> Underwater"<<std::endl;
4086                         continue;
4087                 }
4088
4089                 // Found a good place
4090                 //dstream<<"Searched through "<<i<<" places."<<std::endl;
4091                 break;
4092         }
4093 #endif
4094
4095         // If no suitable place was not found, go above water at least.
4096         if(groundheight < WATER_LEVEL)
4097                 groundheight = WATER_LEVEL;
4098
4099         return intToFloat(v3s16(
4100                         nodepos.X,
4101                         groundheight + 3,
4102                         nodepos.Y
4103                         ), BS);
4104 }
4105
4106 Player *Server::emergePlayer(const char *name, const char *password, u16 peer_id)
4107 {
4108         /*
4109                 Try to get an existing player
4110         */
4111         Player *player = m_env.getPlayer(name);
4112         if(player != NULL)
4113         {
4114                 // If player is already connected, cancel
4115                 if(player->peer_id != 0)
4116                 {
4117                         dstream<<"emergePlayer(): Player already connected"<<std::endl;
4118                         return NULL;
4119                 }
4120
4121                 // Got one.
4122                 player->peer_id = peer_id;
4123
4124                 // Reset inventory to creative if in creative mode
4125                 if(g_settings.getBool("creative_mode"))
4126                 {
4127                         craft_set_creative_inventory(player);
4128                 }
4129
4130                 return player;
4131         }
4132
4133         /*
4134                 If player with the wanted peer_id already exists, cancel.
4135         */
4136         if(m_env.getPlayer(peer_id) != NULL)
4137         {
4138                 dstream<<"emergePlayer(): Player with wrong name but same"
4139                                 " peer_id already exists"<<std::endl;
4140                 return NULL;
4141         }
4142
4143         /*
4144                 Create a new player
4145         */
4146         {
4147                 player = new ServerRemotePlayer();
4148                 //player->peer_id = c.peer_id;
4149                 //player->peer_id = PEER_ID_INEXISTENT;
4150                 player->peer_id = peer_id;
4151                 player->updateName(name);
4152                 m_authmanager.add(name);
4153                 m_authmanager.setPassword(name, password);
4154                 m_authmanager.setPrivs(name,
4155                                 stringToPrivs(g_settings.get("default_privs")));
4156
4157                 /*
4158                         Set player position
4159                 */
4160
4161                 dstream<<"Server: Finding spawn place for player \""
4162                                 <<player->getName()<<"\""<<std::endl;
4163
4164                 v3f pos = findSpawnPos(m_env.getServerMap());
4165
4166                 player->setPosition(pos);
4167
4168                 /*
4169                         Add player to environment
4170                 */
4171
4172                 m_env.addPlayer(player);
4173
4174                 /*
4175                         Add stuff to inventory
4176                 */
4177
4178                 if(g_settings.getBool("creative_mode"))
4179                 {
4180                         craft_set_creative_inventory(player);
4181                 }
4182                 else if(g_settings.getBool("give_initial_stuff"))
4183                 {
4184                         craft_give_initial_stuff(player);
4185                 }
4186
4187                 return player;
4188
4189         } // create new player
4190 }
4191
4192 void Server::handlePeerChange(PeerChange &c)
4193 {
4194         JMutexAutoLock envlock(m_env_mutex);
4195         JMutexAutoLock conlock(m_con_mutex);
4196
4197         if(c.type == PEER_ADDED)
4198         {
4199                 /*
4200                         Add
4201                 */
4202
4203                 // Error check
4204                 core::map<u16, RemoteClient*>::Node *n;
4205                 n = m_clients.find(c.peer_id);
4206                 // The client shouldn't already exist
4207                 assert(n == NULL);
4208
4209                 // Create client
4210                 RemoteClient *client = new RemoteClient();
4211                 client->peer_id = c.peer_id;
4212                 m_clients.insert(client->peer_id, client);
4213
4214         } // PEER_ADDED
4215         else if(c.type == PEER_REMOVED)
4216         {
4217                 /*
4218                         Delete
4219                 */
4220
4221                 // Error check
4222                 core::map<u16, RemoteClient*>::Node *n;
4223                 n = m_clients.find(c.peer_id);
4224                 // The client should exist
4225                 assert(n != NULL);
4226
4227                 /*
4228                         Mark objects to be not known by the client
4229                 */
4230                 RemoteClient *client = n->getValue();
4231                 // Handle objects
4232                 for(core::map<u16, bool>::Iterator
4233                                 i = client->m_known_objects.getIterator();
4234                                 i.atEnd()==false; i++)
4235                 {
4236                         // Get object
4237                         u16 id = i.getNode()->getKey();
4238                         ServerActiveObject* obj = m_env.getActiveObject(id);
4239
4240                         if(obj && obj->m_known_by_count > 0)
4241                                 obj->m_known_by_count--;
4242                 }
4243
4244                 // Collect information about leaving in chat
4245                 std::wstring message;
4246                 {
4247                         std::wstring name = L"unknown";
4248                         Player *player = m_env.getPlayer(c.peer_id);
4249                         if(player != NULL)
4250                                 name = narrow_to_wide(player->getName());
4251
4252                         message += L"*** ";
4253                         message += name;
4254                         message += L" left game";
4255                         if(c.timeout)
4256                                 message += L" (timed out)";
4257                 }
4258
4259                 /*// Delete player
4260                 {
4261                         m_env.removePlayer(c.peer_id);
4262                 }*/
4263
4264                 // Set player client disconnected
4265                 {
4266                         Player *player = m_env.getPlayer(c.peer_id);
4267                         if(player != NULL)
4268                                 player->peer_id = 0;
4269                 }
4270
4271                 // Delete client
4272                 delete m_clients[c.peer_id];
4273                 m_clients.remove(c.peer_id);
4274
4275                 // Send player info to all remaining clients
4276                 SendPlayerInfos();
4277
4278                 // Send leave chat message to all remaining clients
4279                 BroadcastChatMessage(message);
4280
4281         } // PEER_REMOVED
4282         else
4283         {
4284                 assert(0);
4285         }
4286 }
4287
4288 void Server::handlePeerChanges()
4289 {
4290         while(m_peer_change_queue.size() > 0)
4291         {
4292                 PeerChange c = m_peer_change_queue.pop_front();
4293
4294                 dout_server<<"Server: Handling peer change: "
4295                                 <<"id="<<c.peer_id<<", timeout="<<c.timeout
4296                                 <<std::endl;
4297
4298                 handlePeerChange(c);
4299         }
4300 }
4301
4302 u64 Server::getPlayerPrivs(Player *player)
4303 {
4304         if(player==NULL)
4305                 return 0;
4306         std::string playername = player->getName();
4307         // Local player gets all privileges regardless of
4308         // what's set on their account.
4309         if(g_settings.get("name") == playername)
4310         {
4311                 return PRIV_ALL;
4312         }
4313         else
4314         {
4315                 return getPlayerAuthPrivs(playername);
4316         }
4317 }
4318
4319 void dedicated_server_loop(Server &server, bool &kill)
4320 {
4321         DSTACK(__FUNCTION_NAME);
4322
4323         dstream<<DTIME<<std::endl;
4324         dstream<<"========================"<<std::endl;
4325         dstream<<"Running dedicated server"<<std::endl;
4326         dstream<<"========================"<<std::endl;
4327         dstream<<std::endl;
4328
4329         IntervalLimiter m_profiler_interval;
4330
4331         for(;;)
4332         {
4333                 // This is kind of a hack but can be done like this
4334                 // because server.step() is very light
4335                 {
4336                         ScopeProfiler sp(&g_profiler, "dedicated server sleep");
4337                         sleep_ms(30);
4338                 }
4339                 server.step(0.030);
4340
4341                 if(server.getShutdownRequested() || kill)
4342                 {
4343                         dstream<<DTIME<<" dedicated_server_loop(): Quitting."<<std::endl;
4344                         break;
4345                 }
4346
4347                 /*
4348                         Profiler
4349                 */
4350                 float profiler_print_interval =
4351                                 g_settings.getFloat("profiler_print_interval");
4352                 if(profiler_print_interval != 0)
4353                 {
4354                         if(m_profiler_interval.step(0.030, profiler_print_interval))
4355                         {
4356                                 dstream<<"Profiler:"<<std::endl;
4357                                 g_profiler.print(dstream);
4358                                 g_profiler.clear();
4359                         }
4360                 }
4361
4362                 /*
4363                         Player info
4364                 */
4365                 static int counter = 0;
4366                 counter--;
4367                 if(counter <= 0)
4368                 {
4369                         counter = 10;
4370
4371                         core::list<PlayerInfo> list = server.getPlayerInfo();
4372                         core::list<PlayerInfo>::Iterator i;
4373                         static u32 sum_old = 0;
4374                         u32 sum = PIChecksum(list);
4375                         if(sum != sum_old)
4376                         {
4377                                 dstream<<DTIME<<"Player info:"<<std::endl;
4378                                 for(i=list.begin(); i!=list.end(); i++)
4379                                 {
4380                                         i->PrintLine(&dstream);
4381                                 }
4382                         }
4383                         sum_old = sum;
4384                 }
4385         }
4386 }
4387
4388