3 Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
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.
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.
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.
21 (c) 2010 Perttu Ahola <celeron55@gmail.com>
27 #include "clientserver.h"
29 #include "jmutexautolock.h"
31 #include "constants.h"
34 void * ServerThread::Thread()
38 DSTACK(__FUNCTION_NAME);
43 m_server->AsyncRunStep();
45 //dout_server<<"Running m_server->Receive()"<<std::endl;
48 catch(con::NoIncomingDataException &e)
51 #if CATCH_UNHANDLED_EXCEPTIONS
53 This is what has to be done in threads to get suitable debug info
55 catch(std::exception &e)
57 dstream<<std::endl<<DTIME<<"An unhandled exception occurred: "
58 <<e.what()<<std::endl;
68 void * EmergeThread::Thread()
72 DSTACK(__FUNCTION_NAME);
75 #if CATCH_UNHANDLED_EXCEPTIONS
81 Get block info from queue, emerge them and send them
84 After queue is empty, exit.
88 QueuedBlockEmerge *qptr = m_server->m_emerge_queue.pop();
92 SharedPtr<QueuedBlockEmerge> q(qptr);
96 //derr_server<<"EmergeThread::Thread(): running"<<std::endl;
98 //TimeTaker timer("block emerge", g_device);
101 Try to emerge it from somewhere.
103 If it is only wanted as optional, only loading from disk
108 Check if any peer wants it as non-optional. In that case it
111 Also decrement the emerge queue count in clients.
114 bool optional = true;
117 core::map<u16, u8>::Iterator i;
118 for(i=q->peer_ids.getIterator(); i.atEnd()==false; i++)
120 //u16 peer_id = i.getNode()->getKey();
123 u8 flags = i.getNode()->getValue();
124 if((flags & TOSERVER_GETBLOCK_FLAG_OPTIONAL) == false)
130 /*dstream<<"EmergeThread: p="
131 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<") "
132 <<"optional="<<optional<<std::endl;*/
134 ServerMap &map = ((ServerMap&)m_server->m_env.getMap());
136 core::map<v3s16, MapBlock*> changed_blocks;
137 core::map<v3s16, MapBlock*> lighting_invalidated_blocks;
139 MapBlock *block = NULL;
140 bool got_block = true;
141 core::map<v3s16, MapBlock*> modified_blocks;
145 JMutexAutoLock envlock(m_server->m_env_mutex);
147 //TimeTaker timer("block emerge envlock", g_device);
150 bool only_from_disk = false;
153 only_from_disk = true;
155 block = map.emergeBlock(
159 lighting_invalidated_blocks);
161 // If it is a dummy, block was not found on disk
164 //dstream<<"EmergeThread: Got a dummy block"<<std::endl;
168 catch(InvalidPositionException &e)
171 // This happens when position is over limit.
177 if(debug && changed_blocks.size() > 0)
179 dout_server<<DTIME<<"Got changed_blocks: ";
180 for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
181 i.atEnd() == false; i++)
183 MapBlock *block = i.getNode()->getValue();
184 v3s16 p = block->getPos();
185 dout_server<<"("<<p.X<<","<<p.Y<<","<<p.Z<<") ";
187 dout_server<<std::endl;
191 Update water pressure
194 m_server->UpdateBlockWaterPressure(block, modified_blocks);
196 for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
197 i.atEnd() == false; i++)
199 MapBlock *block = i.getNode()->getValue();
200 m_server->UpdateBlockWaterPressure(block, modified_blocks);
201 //v3s16 p = i.getNode()->getKey();
202 //m_server->UpdateBlockWaterPressure(p, modified_blocks);
206 Collect a list of blocks that have been modified in
207 addition to the fetched one.
210 // Add all the "changed blocks" to modified_blocks
211 for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
212 i.atEnd() == false; i++)
214 MapBlock *block = i.getNode()->getValue();
215 modified_blocks.insert(block->getPos(), block);
218 /*dstream<<"lighting "<<lighting_invalidated_blocks.size()
219 <<" blocks"<<std::endl;
220 TimeTaker timer("** updateLighting", g_device);*/
222 // Update lighting without locking the environment mutex,
223 // add modified blocks to changed blocks
224 map.updateLighting(lighting_invalidated_blocks, modified_blocks);
226 // If we got no block, there should be no invalidated blocks
229 assert(lighting_invalidated_blocks.size() == 0);
235 Set sent status of modified blocks on clients
238 // NOTE: Server's clients are also behind the connection mutex
239 JMutexAutoLock lock(m_server->m_con_mutex);
242 Add the originally fetched block to the modified list
246 modified_blocks.insert(p, block);
250 Set the modified blocks unsent for all the clients
253 for(core::map<u16, RemoteClient*>::Iterator
254 i = m_server->m_clients.getIterator();
255 i.atEnd() == false; i++)
257 RemoteClient *client = i.getNode()->getValue();
259 if(modified_blocks.size() > 0)
261 // Remove block from sent history
262 client->SetBlocksNotSent(modified_blocks);
267 #if CATCH_UNHANDLED_EXCEPTIONS
270 This is what has to be done in threads to get suitable debug info
272 catch(std::exception &e)
274 dstream<<std::endl<<DTIME<<"An unhandled exception occurred: "
275 <<e.what()<<std::endl;
283 void RemoteClient::GetNextBlocks(Server *server, float dtime,
284 core::array<PrioritySortedBlockTransfer> &dest)
286 DSTACK(__FUNCTION_NAME);
288 // Won't send anything if already sending
290 JMutexAutoLock lock(m_blocks_sending_mutex);
292 if(m_blocks_sending.size() >= g_settings.getU16
293 ("max_simultaneous_block_sends_per_client"))
295 //dstream<<"Not sending any blocks, Queue full."<<std::endl;
300 Player *player = server->m_env.getPlayer(peer_id);
302 v3f playerpos = player->getPosition();
303 v3f playerspeed = player->getSpeed();
305 v3s16 center_nodepos = floatToInt(playerpos);
307 v3s16 center = getNodeBlockPos(center_nodepos);
310 Get the starting value of the block finder radius.
312 s16 last_nearest_unsent_d;
315 JMutexAutoLock lock(m_blocks_sent_mutex);
317 if(m_last_center != center)
319 m_nearest_unsent_d = 0;
320 m_last_center = center;
323 static float reset_counter = 0;
324 reset_counter += dtime;
325 if(reset_counter > 5.0)
328 m_nearest_unsent_d = 0;
331 last_nearest_unsent_d = m_nearest_unsent_d;
333 d_start = m_nearest_unsent_d;
336 u16 maximum_simultaneous_block_sends_setting = g_settings.getU16
337 ("max_simultaneous_block_sends_per_client");
338 u16 maximum_simultaneous_block_sends =
339 maximum_simultaneous_block_sends_setting;
342 Check the time from last addNode/removeNode.
344 Decrease send rate if player is building stuff.
347 SharedPtr<JMutexAutoLock> lock(m_time_from_building.getLock());
348 m_time_from_building.m_value += dtime;
349 if(m_time_from_building.m_value
350 < FULL_BLOCK_SEND_ENABLE_MIN_TIME_FROM_BUILDING)
352 maximum_simultaneous_block_sends
353 = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
357 // Serialization version used
358 //u8 ser_version = serialization_version;
360 //bool has_incomplete_blocks = false;
362 s16 d_max = g_settings.getS16("max_block_send_distance");
363 s16 d_max_gen = g_settings.getS16("max_block_generate_distance");
365 //dstream<<"Starting from "<<d_start<<std::endl;
367 for(s16 d = d_start; d <= d_max; d++)
369 //dstream<<"RemoteClient::SendBlocks(): d="<<d<<std::endl;
371 //if(has_incomplete_blocks == false)
373 JMutexAutoLock lock(m_blocks_sent_mutex);
375 If m_nearest_unsent_d was changed by the EmergeThread
376 (it can change it to 0 through SetBlockNotSent),
378 Else update m_nearest_unsent_d
380 if(m_nearest_unsent_d != last_nearest_unsent_d)
382 d = m_nearest_unsent_d;
386 m_nearest_unsent_d = d;
388 last_nearest_unsent_d = m_nearest_unsent_d;
392 Get the border/face dot coordinates of a "d-radiused"
395 core::list<v3s16> list;
396 getFacePositions(list, d);
398 core::list<v3s16>::Iterator li;
399 for(li=list.begin(); li!=list.end(); li++)
401 v3s16 p = *li + center;
405 - Don't allow too many simultaneous transfers
406 - EXCEPT when the blocks are very close
408 Also, don't send blocks that are already flying.
411 u16 maximum_simultaneous_block_sends_now =
412 maximum_simultaneous_block_sends;
414 if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
415 maximum_simultaneous_block_sends_now =
416 maximum_simultaneous_block_sends_setting;
419 JMutexAutoLock lock(m_blocks_sending_mutex);
421 // Limit is dynamically lowered when building
422 if(m_blocks_sending.size()
423 >= maximum_simultaneous_block_sends_now)
425 /*dstream<<"Not sending more blocks. Queue full. "
426 <<m_blocks_sending.size()
431 if(m_blocks_sending.find(p) != NULL)
438 if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
439 || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
440 || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
441 || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
442 || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
443 || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
446 bool generate = d <= d_max_gen;
448 // Limit the generating area vertically to half
449 if(abs(p.Y - center.Y) > d_max_gen / 2)
453 Don't send already sent blocks
456 JMutexAutoLock lock(m_blocks_sent_mutex);
458 if(m_blocks_sent.find(p) != NULL)
463 Check if map has this block
465 MapBlock *block = NULL;
468 block = server->m_env.getMap().getBlockNoCreate(p);
470 catch(InvalidPositionException &e)
474 bool surely_not_found_on_disk = false;
477 /*if(block->isIncomplete())
479 has_incomplete_blocks = true;
485 surely_not_found_on_disk = true;
490 If block has been marked to not exist on disk (dummy)
491 and generating new ones is not wanted, skip block.
493 if(generate == false && surely_not_found_on_disk == true)
500 Add inexistent block to emerge queue.
502 if(block == NULL || surely_not_found_on_disk)
504 /*SharedPtr<JMutexAutoLock> lock
505 (m_num_blocks_in_emerge_queue.getLock());*/
507 //TODO: Get value from somewhere
508 // Allow only one block in emerge queue
509 if(server->m_emerge_queue.peerItemCount(peer_id) < 1)
511 // Add it to the emerge queue and trigger the thread
514 if(generate == false)
515 flags |= TOSERVER_GETBLOCK_FLAG_OPTIONAL;
517 server->m_emerge_queue.addBlock(peer_id, p, flags);
518 server->m_emergethread.trigger();
529 PrioritySortedBlockTransfer q((float)d, p, peer_id);
535 // Don't add anything here. The loop breaks by returning.
538 void RemoteClient::SendObjectData(
541 core::map<v3s16, bool> &stepped_blocks
544 DSTACK(__FUNCTION_NAME);
546 // Can't send anything without knowing version
547 if(serialization_version == SER_FMT_VER_INVALID)
549 dstream<<"RemoteClient::SendObjectData(): Not sending, no version."
555 Send a TOCLIENT_OBJECTDATA packet.
559 u16 number of player positions
570 std::ostringstream os(std::ios_base::binary);
574 writeU16(buf, TOCLIENT_OBJECTDATA);
575 os.write((char*)buf, 2);
578 Get and write player data
581 core::list<Player*> players = server->m_env.getPlayers();
583 // Write player count
584 u16 playercount = players.size();
585 writeU16(buf, playercount);
586 os.write((char*)buf, 2);
588 core::list<Player*>::Iterator i;
589 for(i = players.begin();
590 i != players.end(); i++)
594 v3f pf = player->getPosition();
595 v3f sf = player->getSpeed();
597 v3s32 position_i(pf.X*100, pf.Y*100, pf.Z*100);
598 v3s32 speed_i (sf.X*100, sf.Y*100, sf.Z*100);
599 s32 pitch_i (player->getPitch() * 100);
600 s32 yaw_i (player->getYaw() * 100);
602 writeU16(buf, player->peer_id);
603 os.write((char*)buf, 2);
604 writeV3S32(buf, position_i);
605 os.write((char*)buf, 12);
606 writeV3S32(buf, speed_i);
607 os.write((char*)buf, 12);
608 writeS32(buf, pitch_i);
609 os.write((char*)buf, 4);
610 writeS32(buf, yaw_i);
611 os.write((char*)buf, 4);
615 Get and write object data
621 For making players to be able to build to their nearby
622 environment (building is not possible on blocks that are not
625 - Add blocks to emerge queue if they are not found
627 SUGGESTION: These could be ignored from the backside of the player
629 TODO: Keep track of total size of packet and stop when it is too big
632 Player *player = server->m_env.getPlayer(peer_id);
634 v3f playerpos = player->getPosition();
635 v3f playerspeed = player->getSpeed();
637 v3s16 center_nodepos = floatToInt(playerpos);
638 v3s16 center = getNodeBlockPos(center_nodepos);
640 //s16 d_max = ACTIVE_OBJECT_D_BLOCKS;
641 s16 d_max = g_settings.getS16("active_object_range");
643 // Number of blocks whose objects were written to bos
646 //core::map<v3s16, MapBlock*> blocks;
647 std::ostringstream bos(std::ios_base::binary);
649 for(s16 d = 0; d <= d_max; d++)
651 core::list<v3s16> list;
652 getFacePositions(list, d);
654 core::list<v3s16>::Iterator li;
655 for(li=list.begin(); li!=list.end(); li++)
657 v3s16 p = *li + center;
660 Ignore blocks that haven't been sent to the client
663 JMutexAutoLock sentlock(m_blocks_sent_mutex);
664 if(m_blocks_sent.find(p) == NULL)
668 // Try stepping block and add it to a send queue
673 MapBlock *block = server->m_env.getMap().getBlockNoCreate(p);
675 // Skip block if there are no objects
676 if(block->getObjectCount() == 0)
679 // Step block if not in stepped_blocks and add to stepped_blocks
680 if(stepped_blocks.find(p) == NULL)
682 block->stepObjects(dtime, true);
683 stepped_blocks.insert(p, true);
684 block->setChangedFlag();
693 bos.write((char*)buf, 6);
696 block->serializeObjects(bos, serialization_version);
701 Stop collecting objects if data is already too big
703 // Sum of player and object data sizes
704 s32 sum = (s32)os.tellp() + 2 + (s32)bos.tellp();
705 // break out if data too big
706 if(sum > MAX_OBJECTDATA_SIZE)
708 goto skip_subsequent;
712 catch(InvalidPositionException &e)
715 // Add it to the emerge queue and trigger the thread.
716 // Fetch the block only if it is on disk.
718 // Grab and increment counter
719 /*SharedPtr<JMutexAutoLock> lock
720 (m_num_blocks_in_emerge_queue.getLock());
721 m_num_blocks_in_emerge_queue.m_value++;*/
723 // Add to queue as an anonymous fetch from disk
724 u8 flags = TOSERVER_GETBLOCK_FLAG_OPTIONAL;
725 server->m_emerge_queue.addBlock(0, p, flags);
726 server->m_emergethread.trigger();
734 writeU16(buf, blockcount);
735 os.write((char*)buf, 2);
737 // Write block objects
744 //dstream<<"Server: Sending object data to "<<peer_id<<std::endl;
747 std::string s = os.str();
748 SharedBuffer<u8> data((u8*)s.c_str(), s.size());
749 // Send as unreliable
750 server->m_con.Send(peer_id, 0, data, false);
753 void RemoteClient::GotBlock(v3s16 p)
755 JMutexAutoLock lock(m_blocks_sending_mutex);
756 JMutexAutoLock lock2(m_blocks_sent_mutex);
757 if(m_blocks_sending.find(p) != NULL)
758 m_blocks_sending.remove(p);
760 dstream<<"RemoteClient::GotBlock(): Didn't find in"
761 " m_blocks_sending"<<std::endl;
762 m_blocks_sent.insert(p, true);
765 void RemoteClient::SentBlock(v3s16 p)
767 JMutexAutoLock lock(m_blocks_sending_mutex);
768 if(m_blocks_sending.size() > 15)
770 dstream<<"RemoteClient::SentBlock(): "
771 <<"m_blocks_sending.size()="
772 <<m_blocks_sending.size()<<std::endl;
774 if(m_blocks_sending.find(p) == NULL)
775 m_blocks_sending.insert(p, 0.0);
777 dstream<<"RemoteClient::SentBlock(): Sent block"
778 " already in m_blocks_sending"<<std::endl;
781 void RemoteClient::SetBlockNotSent(v3s16 p)
783 JMutexAutoLock sendinglock(m_blocks_sending_mutex);
784 JMutexAutoLock sentlock(m_blocks_sent_mutex);
786 m_nearest_unsent_d = 0;
788 if(m_blocks_sending.find(p) != NULL)
789 m_blocks_sending.remove(p);
790 if(m_blocks_sent.find(p) != NULL)
791 m_blocks_sent.remove(p);
794 void RemoteClient::SetBlocksNotSent(core::map<v3s16, MapBlock*> &blocks)
796 JMutexAutoLock sendinglock(m_blocks_sending_mutex);
797 JMutexAutoLock sentlock(m_blocks_sent_mutex);
799 m_nearest_unsent_d = 0;
801 for(core::map<v3s16, MapBlock*>::Iterator
802 i = blocks.getIterator();
803 i.atEnd()==false; i++)
805 v3s16 p = i.getNode()->getKey();
807 if(m_blocks_sending.find(p) != NULL)
808 m_blocks_sending.remove(p);
809 if(m_blocks_sent.find(p) != NULL)
810 m_blocks_sent.remove(p);
814 /*void RemoteClient::BlockEmerged()
816 SharedPtr<JMutexAutoLock> lock(m_num_blocks_in_emerge_queue.getLock());
817 assert(m_num_blocks_in_emerge_queue.m_value > 0);
818 m_num_blocks_in_emerge_queue.m_value--;
821 /*void RemoteClient::RunSendingTimeouts(float dtime, float timeout)
823 JMutexAutoLock sendinglock(m_blocks_sending_mutex);
825 core::list<v3s16> remove_queue;
826 for(core::map<v3s16, float>::Iterator
827 i = m_blocks_sending.getIterator();
828 i.atEnd()==false; i++)
830 v3s16 p = i.getNode()->getKey();
831 float t = i.getNode()->getValue();
833 i.getNode()->setValue(t);
837 remove_queue.push_back(p);
840 for(core::list<v3s16>::Iterator
841 i = remove_queue.begin();
842 i != remove_queue.end(); i++)
844 m_blocks_sending.remove(*i);
852 PlayerInfo::PlayerInfo()
857 void PlayerInfo::PrintLine(std::ostream *s)
859 (*s)<<id<<": \""<<name<<"\" ("
860 <<position.X<<","<<position.Y
861 <<","<<position.Z<<") ";
863 (*s)<<" avg_rtt="<<avg_rtt;
867 u32 PIChecksum(core::list<PlayerInfo> &l)
869 core::list<PlayerInfo>::Iterator i;
872 for(i=l.begin(); i!=l.end(); i++)
874 checksum += a * (i->id+1);
875 checksum ^= 0x435aafcd;
886 std::string mapsavedir,
890 m_env(new ServerMap(mapsavedir, hm_params, map_params), dout_server),
891 m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
897 m_step_dtime_mutex.Init();
906 JMutexAutoLock clientslock(m_con_mutex);
908 for(core::map<u16, RemoteClient*>::Iterator
909 i = m_clients.getIterator();
910 i.atEnd() == false; i++)
912 u16 peer_id = i.getNode()->getKey();
916 JMutexAutoLock envlock(m_env_mutex);
917 m_env.removePlayer(peer_id);
921 delete i.getNode()->getValue();
925 void Server::start(unsigned short port)
927 DSTACK(__FUNCTION_NAME);
928 // Stop thread if already running
931 // Initialize connection
932 m_con.setTimeoutMs(30);
936 m_thread.setRun(true);
939 dout_server<<"Server started on port "<<port<<std::endl;
944 DSTACK(__FUNCTION_NAME);
945 // Stop threads (set run=false first so both start stopping)
946 m_thread.setRun(false);
947 m_emergethread.setRun(false);
949 m_emergethread.stop();
951 dout_server<<"Server threads stopped"<<std::endl;
954 void Server::step(float dtime)
956 DSTACK(__FUNCTION_NAME);
961 JMutexAutoLock lock(m_step_dtime_mutex);
962 m_step_dtime += dtime;
966 void Server::AsyncRunStep()
968 DSTACK(__FUNCTION_NAME);
972 JMutexAutoLock lock1(m_step_dtime_mutex);
973 dtime = m_step_dtime;
979 //dstream<<"Server steps "<<dtime<<std::endl;
981 //dstream<<"Server::AsyncRunStep(): dtime="<<dtime<<std::endl;
983 // Has to be locked for peerAdded/Removed
984 JMutexAutoLock lock1(m_env_mutex);
985 // Process connection's timeouts
986 JMutexAutoLock lock2(m_con_mutex);
987 m_con.RunTimeouts(dtime);
991 // This also runs Map's timers
992 JMutexAutoLock lock(m_env_mutex);
1004 static float counter = 0.0;
1006 if(counter >= 0.25 && m_flow_active_nodes.size() > 0)
1011 core::map<v3s16, MapBlock*> modified_blocks;
1015 JMutexAutoLock envlock(m_env_mutex);
1017 MapVoxelManipulator v(&m_env.getMap());
1018 v.m_disable_water_climb =
1019 g_settings.getBool("disable_water_climb");
1021 v.flowWater(m_flow_active_nodes, 0, false, 50);
1023 v.blitBack(modified_blocks);
1025 ServerMap &map = ((ServerMap&)m_env.getMap());
1028 core::map<v3s16, MapBlock*> lighting_modified_blocks;
1029 map.updateLighting(modified_blocks, lighting_modified_blocks);
1031 // Add blocks modified by lighting to modified_blocks
1032 for(core::map<v3s16, MapBlock*>::Iterator
1033 i = lighting_modified_blocks.getIterator();
1034 i.atEnd() == false; i++)
1036 MapBlock *block = i.getNode()->getValue();
1037 modified_blocks.insert(block->getPos(), block);
1042 Set the modified blocks unsent for all the clients
1045 JMutexAutoLock lock2(m_con_mutex);
1047 for(core::map<u16, RemoteClient*>::Iterator
1048 i = m_clients.getIterator();
1049 i.atEnd() == false; i++)
1051 RemoteClient *client = i.getNode()->getValue();
1053 if(modified_blocks.size() > 0)
1055 // Remove block from sent history
1056 client->SetBlocksNotSent(modified_blocks);
1060 } // interval counter
1063 // Periodically print some info
1065 static float counter = 0.0;
1071 JMutexAutoLock lock2(m_con_mutex);
1073 for(core::map<u16, RemoteClient*>::Iterator
1074 i = m_clients.getIterator();
1075 i.atEnd() == false; i++)
1077 //u16 peer_id = i.getNode()->getKey();
1078 RemoteClient *client = i.getNode()->getValue();
1079 client->PrintInfo(std::cout);
1084 // Run time- and client- related stuff
1085 // NOTE: If you intend to add something here, check that it
1086 // doesn't fit in RemoteClient::GetNextBlocks for example.
1088 // Clients are behind connection lock
1089 JMutexAutoLock lock(m_con_mutex);
1091 for(core::map<u16, RemoteClient*>::Iterator
1092 i = m_clients.getIterator();
1093 i.atEnd() == false; i++)
1095 RemoteClient *client = i.getNode()->getValue();
1096 //con::Peer *peer = m_con.GetPeer(client->peer_id);
1097 //client->RunSendingTimeouts(dtime, peer->resend_timeout);
1101 // Send blocks to clients
1104 // Send object positions
1106 static float counter = 0.0;
1108 if(counter >= g_settings.getFloat("objectdata_interval"))
1110 JMutexAutoLock lock1(m_env_mutex);
1111 JMutexAutoLock lock2(m_con_mutex);
1112 SendObjectData(counter);
1118 // Trigger emergethread (it gets somehow gets to a
1119 // non-triggered but bysy state sometimes)
1121 static float counter = 0.0;
1127 m_emergethread.trigger();
1133 static float counter = 0.0;
1135 if(counter >= SERVER_MAP_SAVE_INTERVAL)
1139 JMutexAutoLock lock(m_env_mutex);
1140 // Save only changed parts
1141 m_env.getMap().save(true);
1146 void Server::Receive()
1148 DSTACK(__FUNCTION_NAME);
1149 u32 data_maxsize = 10000;
1150 Buffer<u8> data(data_maxsize);
1155 JMutexAutoLock lock(m_con_mutex);
1156 datasize = m_con.Receive(peer_id, *data, data_maxsize);
1158 ProcessData(*data, datasize, peer_id);
1160 catch(con::InvalidIncomingDataException &e)
1162 derr_server<<"Server::Receive(): "
1163 "InvalidIncomingDataException: what()="
1164 <<e.what()<<std::endl;
1166 catch(con::PeerNotFoundException &e)
1168 //NOTE: This is not needed anymore
1170 // The peer has been disconnected.
1171 // Find the associated player and remove it.
1173 /*JMutexAutoLock envlock(m_env_mutex);
1175 dout_server<<"ServerThread: peer_id="<<peer_id
1176 <<" has apparently closed connection. "
1177 <<"Removing player."<<std::endl;
1179 m_env.removePlayer(peer_id);*/
1183 void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
1185 DSTACK(__FUNCTION_NAME);
1186 // Environment is locked first.
1187 JMutexAutoLock envlock(m_env_mutex);
1188 JMutexAutoLock conlock(m_con_mutex);
1192 peer = m_con.GetPeer(peer_id);
1194 catch(con::PeerNotFoundException &e)
1196 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: peer "
1197 <<peer_id<<" not found"<<std::endl;
1201 //u8 peer_ser_ver = peer->serialization_version;
1202 u8 peer_ser_ver = getClient(peer->id)->serialization_version;
1210 ToServerCommand command = (ToServerCommand)readU16(&data[0]);
1212 if(command == TOSERVER_INIT)
1214 // [0] u16 TOSERVER_INIT
1215 // [2] u8 SER_FMT_VER_HIGHEST
1216 // [3] u8[20] player_name
1221 derr_server<<DTIME<<"Server: Got TOSERVER_INIT from "
1222 <<peer->id<<std::endl;
1224 // First byte after command is maximum supported
1225 // serialization version
1226 u8 client_max = data[2];
1227 u8 our_max = SER_FMT_VER_HIGHEST;
1228 // Use the highest version supported by both
1229 u8 deployed = core::min_(client_max, our_max);
1230 // If it's lower than the lowest supported, give up.
1231 if(deployed < SER_FMT_VER_LOWEST)
1232 deployed = SER_FMT_VER_INVALID;
1234 //peer->serialization_version = deployed;
1235 getClient(peer->id)->pending_serialization_version = deployed;
1237 if(deployed == SER_FMT_VER_INVALID)
1239 derr_server<<DTIME<<"Server: Cannot negotiate "
1240 "serialization version with peer "
1241 <<peer_id<<std::endl;
1249 Player *player = m_env.getPlayer(peer_id);
1251 // Check if player doesn't exist
1253 throw con::InvalidIncomingDataException
1254 ("Server::ProcessData(): INIT: Player doesn't exist");
1256 // update name if it was supplied
1257 if(datasize >= 20+3)
1260 player->updateName((const char*)&data[3]);
1263 // Now answer with a TOCLIENT_INIT
1265 SharedBuffer<u8> reply(2+1+6);
1266 writeU16(&reply[0], TOCLIENT_INIT);
1267 writeU8(&reply[2], deployed);
1268 writeV3S16(&reply[3], floatToInt(player->getPosition()+v3f(0,BS/2,0)));
1270 m_con.Send(peer_id, 0, reply, true);
1274 if(command == TOSERVER_INIT2)
1276 derr_server<<DTIME<<"Server: Got TOSERVER_INIT2 from "
1277 <<peer->id<<std::endl;
1280 getClient(peer->id)->serialization_version
1281 = getClient(peer->id)->pending_serialization_version;
1284 Send some initialization data
1287 // Send player info to all players
1290 // Send inventory to player
1291 SendInventory(peer->id);
1296 if(peer_ser_ver == SER_FMT_VER_INVALID)
1298 derr_server<<DTIME<<"Server::ProcessData(): Cancelling: Peer"
1299 " serialization format invalid or not initialized."
1300 " Skipping incoming command="<<command<<std::endl;
1304 Player *player = m_env.getPlayer(peer_id);
1307 derr_server<<"Server::ProcessData(): Cancelling: "
1308 "No player for peer_id="<<peer_id
1312 if(command == TOSERVER_PLAYERPOS)
1314 if(datasize < 2+12+12+4+4)
1318 v3s32 ps = readV3S32(&data[start+2]);
1319 v3s32 ss = readV3S32(&data[start+2+12]);
1320 f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
1321 f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
1322 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
1323 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
1324 pitch = wrapDegrees(pitch);
1325 yaw = wrapDegrees(yaw);
1326 player->setPosition(position);
1327 player->setSpeed(speed);
1328 player->setPitch(pitch);
1329 player->setYaw(yaw);
1331 /*dout_server<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
1332 <<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
1333 <<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
1335 else if(command == TOSERVER_GOTBLOCKS)
1348 u16 count = data[2];
1349 for(u16 i=0; i<count; i++)
1351 if((s16)datasize < 2+1+(i+1)*6)
1352 throw con::InvalidIncomingDataException
1353 ("GOTBLOCKS length is too short");
1354 v3s16 p = readV3S16(&data[2+1+i*6]);
1355 /*dstream<<"Server: GOTBLOCKS ("
1356 <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1357 RemoteClient *client = getClient(peer_id);
1358 client->GotBlock(p);
1361 else if(command == TOSERVER_DELETEDBLOCKS)
1374 u16 count = data[2];
1375 for(u16 i=0; i<count; i++)
1377 if((s16)datasize < 2+1+(i+1)*6)
1378 throw con::InvalidIncomingDataException
1379 ("DELETEDBLOCKS length is too short");
1380 v3s16 p = readV3S16(&data[2+1+i*6]);
1381 /*dstream<<"Server: DELETEDBLOCKS ("
1382 <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1383 RemoteClient *client = getClient(peer_id);
1384 client->SetBlockNotSent(p);
1387 else if(command == TOSERVER_CLICK_OBJECT)
1394 [2] u8 button (0=left, 1=right)
1399 u8 button = readU8(&data[2]);
1401 p.X = readS16(&data[3]);
1402 p.Y = readS16(&data[5]);
1403 p.Z = readS16(&data[7]);
1404 s16 id = readS16(&data[9]);
1405 //u16 item_i = readU16(&data[11]);
1407 MapBlock *block = NULL;
1410 block = m_env.getMap().getBlockNoCreate(p);
1412 catch(InvalidPositionException &e)
1414 derr_server<<"PICK_OBJECT block not found"<<std::endl;
1418 MapBlockObject *obj = block->getObject(id);
1422 derr_server<<"PICK_OBJECT object not found"<<std::endl;
1426 //TODO: Check that object is reasonably close
1431 if(g_settings.getBool("creative_mode") == false)
1434 // Skip if inventory has no free space
1435 if(player->inventory.getUsedSlots() == player->inventory.getSize())
1437 dout_server<<"Player inventory has no free space"<<std::endl;
1441 // Add to inventory and send inventory
1442 InventoryItem *item = new MapBlockObjectItem
1443 (obj->getInventoryString());
1444 player->inventory.addItem(item);
1445 SendInventory(player->peer_id);
1448 // Remove from block
1449 block->removeObject(id);
1452 else if(command == TOSERVER_CLICK_GROUND)
1459 [2] u8 button (0=left, 1=right)
1460 [3] v3s16 nodepos_undersurface
1461 [9] v3s16 nodepos_abovesurface
1464 u8 button = readU8(&data[2]);
1466 p_under.X = readS16(&data[3]);
1467 p_under.Y = readS16(&data[5]);
1468 p_under.Z = readS16(&data[7]);
1470 p_over.X = readS16(&data[9]);
1471 p_over.Y = readS16(&data[11]);
1472 p_over.Z = readS16(&data[13]);
1473 u16 item_i = readU16(&data[15]);
1475 //TODO: Check that target is reasonably close
1478 Left button digs ground
1483 core::map<v3s16, MapBlock*> modified_blocks;
1489 // Get material at position
1490 material = m_env.getMap().getNode(p_under).d;
1491 // If it's not diggable, do nothing
1492 if(content_diggable(material) == false)
1497 catch(InvalidPositionException &e)
1499 derr_server<<"Server: Ignoring REMOVENODE: Node not found"
1504 // Reset build time counter
1505 getClient(peer->id)->m_time_from_building.set(0.0);
1509 SharedBuffer<u8> reply(replysize);
1510 writeU16(&reply[0], TOCLIENT_REMOVENODE);
1511 writeS16(&reply[2], p_under.X);
1512 writeS16(&reply[4], p_under.Y);
1513 writeS16(&reply[6], p_under.Z);
1515 m_con.SendToAll(0, reply, true);
1517 if(g_settings.getBool("creative_mode") == false)
1519 // Add to inventory and send inventory
1520 InventoryItem *item = new MaterialItem(material, 1);
1521 player->inventory.addItem(item);
1522 SendInventory(player->peer_id);
1527 (this takes some time so it is done after the quick stuff)
1529 m_env.getMap().removeNodeAndUpdate(p_under, modified_blocks);
1535 // Update water pressure around modification
1536 // This also adds it to m_flow_active_nodes if appropriate
1538 MapVoxelManipulator v(&m_env.getMap());
1539 v.m_disable_water_climb =
1540 g_settings.getBool("disable_water_climb");
1542 VoxelArea area(p_under-v3s16(1,1,1), p_under+v3s16(1,1,1));
1546 v.updateAreaWaterPressure(area, m_flow_active_nodes);
1548 catch(ProcessingLimitException &e)
1550 dstream<<"Processing limit reached (1)"<<std::endl;
1553 v.blitBack(modified_blocks);
1555 // Add the node to m_flow_active_nodes.
1556 //m_flow_active_nodes[p_under] = 1;
1560 Right button places blocks and stuff
1562 else if(button == 1)
1566 InventoryItem *item = player->inventory.getItem(item_i);
1568 // If there is no item, it is not possible to add it anywhere
1573 Handle material items
1575 if(std::string("MaterialItem") == item->getName())
1578 // Don't add a node if this is not a free space
1579 MapNode n2 = m_env.getMap().getNode(p_over);
1580 if(content_buildable_to(n2.d) == false)
1583 catch(InvalidPositionException &e)
1585 derr_server<<"Server: Ignoring ADDNODE: Node not found"
1590 // Reset build time counter
1591 getClient(peer->id)->m_time_from_building.set(0.0);
1594 MaterialItem *mitem = (MaterialItem*)item;
1596 n.d = mitem->getMaterial();
1597 if(content_directional(n.d))
1598 n.dir = packDir(p_under - p_over);
1602 u32 replysize = 8 + MapNode::serializedLength(peer_ser_ver);
1603 SharedBuffer<u8> reply(replysize);
1604 writeU16(&reply[0], TOCLIENT_ADDNODE);
1605 writeS16(&reply[2], p_over.X);
1606 writeS16(&reply[4], p_over.Y);
1607 writeS16(&reply[6], p_over.Z);
1608 n.serialize(&reply[8], peer_ser_ver);
1610 m_con.SendToAll(0, reply, true);
1615 if(g_settings.getBool("creative_mode") == false)
1617 // Remove from inventory and send inventory
1618 if(mitem->getCount() == 1)
1619 player->inventory.deleteItem(item_i);
1623 SendInventory(peer_id);
1629 This takes some time so it is done after the quick stuff
1631 core::map<v3s16, MapBlock*> modified_blocks;
1632 m_env.getMap().addNodeAndUpdate(p_over, n, modified_blocks);
1638 if(g_settings.getBool("creative_mode") == false)
1640 // Remove from inventory and send inventory
1641 if(mitem->getCount() == 1)
1642 player->inventory.deleteItem(item_i);
1646 SendInventory(peer_id);
1652 This takes some time so it is done after the quick stuff
1654 core::map<v3s16, MapBlock*> modified_blocks;
1655 m_env.getMap().addNodeAndUpdate(p_over, n, modified_blocks);
1658 Set the modified blocks unsent for all the clients
1661 //JMutexAutoLock lock2(m_con_mutex);
1663 for(core::map<u16, RemoteClient*>::Iterator
1664 i = m_clients.getIterator();
1665 i.atEnd() == false; i++)
1667 RemoteClient *client = i.getNode()->getValue();
1669 if(modified_blocks.size() > 0)
1671 // Remove block from sent history
1672 client->SetBlocksNotSent(modified_blocks);
1681 // Update water pressure around modification
1682 // This also adds it to m_flow_active_nodes if appropriate
1684 MapVoxelManipulator v(&m_env.getMap());
1685 v.m_disable_water_climb =
1686 g_settings.getBool("disable_water_climb");
1688 VoxelArea area(p_over-v3s16(1,1,1), p_over+v3s16(1,1,1));
1692 v.updateAreaWaterPressure(area, m_flow_active_nodes);
1694 catch(ProcessingLimitException &e)
1696 dstream<<"Processing limit reached (1)"<<std::endl;
1699 v.blitBack(modified_blocks);
1702 Handle block object items
1704 else if(std::string("MBOItem") == item->getName())
1706 MapBlockObjectItem *oitem = (MapBlockObjectItem*)item;
1708 /*dout_server<<"Trying to place a MapBlockObjectItem: "
1709 "inventorystring=\""
1710 <<oitem->getInventoryString()
1711 <<"\""<<std::endl;*/
1713 v3s16 blockpos = getNodeBlockPos(p_over);
1715 MapBlock *block = NULL;
1718 block = m_env.getMap().getBlockNoCreate(blockpos);
1720 catch(InvalidPositionException &e)
1722 derr_server<<"Error while placing object: "
1723 "block not found"<<std::endl;
1727 v3s16 block_pos_i_on_map = block->getPosRelative();
1728 v3f block_pos_f_on_map = intToFloat(block_pos_i_on_map);
1730 v3f pos = intToFloat(p_over);
1731 pos -= block_pos_f_on_map;
1733 /*dout_server<<"pos="
1734 <<"("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
1738 MapBlockObject *obj = oitem->createObject
1739 (pos, player->getYaw(), player->getPitch());
1742 derr_server<<"WARNING: oitem created NULL object"
1745 block->addObject(obj);
1747 //dout_server<<"Placed object"<<std::endl;
1749 if(g_settings.getBool("creative_mode") == false)
1751 // Remove from inventory and send inventory
1752 player->inventory.deleteItem(item_i);
1754 SendInventory(peer_id);
1760 Catch invalid buttons
1764 derr_server<<"WARNING: Server: Invalid button "
1765 <<button<<std::endl;
1768 else if(command == TOSERVER_RELEASE)
1779 else if(command == TOSERVER_SIGNTEXT)
1788 std::string datastring((char*)&data[2], datasize-2);
1789 std::istringstream is(datastring, std::ios_base::binary);
1792 is.read((char*)buf, 6);
1793 v3s16 blockpos = readV3S16(buf);
1794 is.read((char*)buf, 2);
1795 s16 id = readS16(buf);
1796 is.read((char*)buf, 2);
1797 u16 textlen = readU16(buf);
1799 for(u16 i=0; i<textlen; i++)
1801 is.read((char*)buf, 1);
1802 text += (char)buf[0];
1805 MapBlock *block = NULL;
1808 block = m_env.getMap().getBlockNoCreate(blockpos);
1810 catch(InvalidPositionException &e)
1812 derr_server<<"Error while setting sign text: "
1813 "block not found"<<std::endl;
1817 MapBlockObject *obj = block->getObject(id);
1820 derr_server<<"Error while setting sign text: "
1821 "object not found"<<std::endl;
1825 if(obj->getTypeId() != MAPBLOCKOBJECT_TYPE_SIGN)
1827 derr_server<<"Error while setting sign text: "
1828 "object is not a sign"<<std::endl;
1832 ((SignObject*)obj)->setText(text);
1834 obj->getBlock()->setChangedFlag();
1838 derr_server<<"WARNING: Server::ProcessData(): Ignoring "
1839 "unknown command "<<command<<std::endl;
1843 catch(SendFailedException &e)
1845 derr_server<<"Server::ProcessData(): SendFailedException: "
1851 /*void Server::Send(u16 peer_id, u16 channelnum,
1852 SharedBuffer<u8> data, bool reliable)
1854 JMutexAutoLock lock(m_con_mutex);
1855 m_con.Send(peer_id, channelnum, data, reliable);
1858 void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver)
1860 DSTACK(__FUNCTION_NAME);
1862 Create a packet with the block in the right format
1865 std::ostringstream os(std::ios_base::binary);
1866 block->serialize(os, ver);
1867 std::string s = os.str();
1868 SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
1870 u32 replysize = 8 + blockdata.getSize();
1871 SharedBuffer<u8> reply(replysize);
1872 v3s16 p = block->getPos();
1873 writeU16(&reply[0], TOCLIENT_BLOCKDATA);
1874 writeS16(&reply[2], p.X);
1875 writeS16(&reply[4], p.Y);
1876 writeS16(&reply[6], p.Z);
1877 memcpy(&reply[8], *blockdata, blockdata.getSize());
1879 //dstream<<"Sending block: packet size: "<<replysize<<std::endl;
1884 m_con.Send(peer_id, 1, reply, true);
1887 core::list<PlayerInfo> Server::getPlayerInfo()
1889 DSTACK(__FUNCTION_NAME);
1890 JMutexAutoLock envlock(m_env_mutex);
1891 JMutexAutoLock conlock(m_con_mutex);
1893 core::list<PlayerInfo> list;
1895 core::list<Player*> players = m_env.getPlayers();
1897 core::list<Player*>::Iterator i;
1898 for(i = players.begin();
1899 i != players.end(); i++)
1903 Player *player = *i;
1905 con::Peer *peer = m_con.GetPeer(player->peer_id);
1907 info.address = peer->address;
1908 info.avg_rtt = peer->avg_rtt;
1910 catch(con::PeerNotFoundException &e)
1912 // Outdated peer info
1914 info.address = Address(0,0,0,0,0);
1918 snprintf(info.name, PLAYERNAME_SIZE, "%s", player->getName());
1919 info.position = player->getPosition();
1921 list.push_back(info);
1927 void Server::peerAdded(con::Peer *peer)
1929 DSTACK(__FUNCTION_NAME);
1930 dout_server<<"Server::peerAdded(): peer->id="
1931 <<peer->id<<std::endl;
1933 // Connection is already locked when this is called.
1934 //JMutexAutoLock lock(m_con_mutex);
1937 core::map<u16, RemoteClient*>::Node *n;
1938 n = m_clients.find(peer->id);
1939 // The client shouldn't already exist
1943 RemoteClient *client = new RemoteClient();
1944 client->peer_id = peer->id;
1945 m_clients.insert(client->peer_id, client);
1949 // Already locked when called
1950 //JMutexAutoLock envlock(m_env_mutex);
1952 Player *player = m_env.getPlayer(peer->id);
1954 // The player shouldn't already exist
1955 assert(player == NULL);
1957 player = new RemotePlayer();
1958 player->peer_id = peer->id;
1964 // Get zero sector (it could have been unloaded to disk)
1965 m_env.getMap().emergeSector(v2s16(0,0));
1966 // Get ground height at origin
1967 f32 groundheight = m_env.getMap().getGroundHeight(v2s16(0,0), true);
1968 // The zero sector should have been generated
1969 assert(groundheight > GROUNDHEIGHT_VALID_MINVALUE);
1970 // Don't go underwater
1971 if(groundheight < WATER_LEVEL)
1972 groundheight = WATER_LEVEL;
1974 player->setPosition(intToFloat(v3s16(
1981 Add player to environment
1984 m_env.addPlayer(player);
1987 Add stuff to inventory
1990 if(g_settings.getBool("creative_mode"))
1992 // Give all materials
1993 assert(USEFUL_CONTENT_COUNT <= PLAYER_INVENTORY_SIZE);
1994 for(u16 i=0; i<USEFUL_CONTENT_COUNT; i++)
1996 // Skip some materials
1997 if(i == CONTENT_OCEAN)
2000 InventoryItem *item = new MaterialItem(i, 1);
2001 player->inventory.addItem(item);
2005 InventoryItem *item = new MapBlockObjectItem("Sign Example text");
2006 bool r = player->inventory.addItem(item);
2011 InventoryItem *item = new MapBlockObjectItem("Rat");
2012 bool r = player->inventory.addItem(item);
2020 InventoryItem *item = new MaterialItem(3, 999);
2021 bool r = player->inventory.addItem(item);
2025 for(u16 i=0; i<4; i++)
2027 InventoryItem *item = new MapBlockObjectItem("Sign Example text");
2028 bool r = player->inventory.addItem(item);
2032 for(u16 i=0; i<4; i++)
2034 InventoryItem *item = new MapBlockObjectItem("Rat");
2035 bool r = player->inventory.addItem(item);
2042 void Server::deletingPeer(con::Peer *peer, bool timeout)
2044 DSTACK(__FUNCTION_NAME);
2045 dout_server<<"Server::deletingPeer(): peer->id="
2046 <<peer->id<<", timeout="<<timeout<<std::endl;
2048 // Connection is already locked when this is called.
2049 //JMutexAutoLock lock(m_con_mutex);
2052 core::map<u16, RemoteClient*>::Node *n;
2053 n = m_clients.find(peer->id);
2054 // The client should exist
2059 // Already locked when called
2060 //JMutexAutoLock envlock(m_env_mutex);
2061 m_env.removePlayer(peer->id);
2065 delete m_clients[peer->id];
2066 m_clients.remove(peer->id);
2068 // Send player info to all clients
2072 void Server::SendObjectData(float dtime)
2074 DSTACK(__FUNCTION_NAME);
2076 core::map<v3s16, bool> stepped_blocks;
2078 for(core::map<u16, RemoteClient*>::Iterator
2079 i = m_clients.getIterator();
2080 i.atEnd() == false; i++)
2082 u16 peer_id = i.getNode()->getKey();
2083 RemoteClient *client = i.getNode()->getValue();
2084 assert(client->peer_id == peer_id);
2086 if(client->serialization_version == SER_FMT_VER_INVALID)
2089 client->SendObjectData(this, dtime, stepped_blocks);
2093 void Server::SendPlayerInfos()
2095 DSTACK(__FUNCTION_NAME);
2097 //JMutexAutoLock envlock(m_env_mutex);
2099 core::list<Player*> players = m_env.getPlayers();
2101 u32 player_count = players.getSize();
2102 u32 datasize = 2+(2+PLAYERNAME_SIZE)*player_count;
2104 SharedBuffer<u8> data(datasize);
2105 writeU16(&data[0], TOCLIENT_PLAYERINFO);
2108 core::list<Player*>::Iterator i;
2109 for(i = players.begin();
2110 i != players.end(); i++)
2112 Player *player = *i;
2114 /*dstream<<"Server sending player info for player with "
2115 "peer_id="<<player->peer_id<<std::endl;*/
2117 writeU16(&data[start], player->peer_id);
2118 snprintf((char*)&data[start+2], PLAYERNAME_SIZE, "%s", player->getName());
2119 start += 2+PLAYERNAME_SIZE;
2122 //JMutexAutoLock conlock(m_con_mutex);
2125 m_con.SendToAll(0, data, true);
2128 void Server::SendInventory(u16 peer_id)
2130 DSTACK(__FUNCTION_NAME);
2132 //JMutexAutoLock envlock(m_env_mutex);
2134 Player* player = m_env.getPlayer(peer_id);
2136 std::ostringstream os;
2137 //os.imbue(std::locale("C"));
2139 player->inventory.serialize(os);
2141 std::string s = os.str();
2143 SharedBuffer<u8> data(s.size()+2);
2144 writeU16(&data[0], TOCLIENT_INVENTORY);
2145 memcpy(&data[2], s.c_str(), s.size());
2147 //JMutexAutoLock conlock(m_con_mutex);
2150 m_con.Send(peer_id, 0, data, true);
2153 void Server::SendBlocks(float dtime)
2155 DSTACK(__FUNCTION_NAME);
2157 JMutexAutoLock envlock(m_env_mutex);
2159 core::array<PrioritySortedBlockTransfer> queue;
2161 s32 total_sending = 0;
2163 for(core::map<u16, RemoteClient*>::Iterator
2164 i = m_clients.getIterator();
2165 i.atEnd() == false; i++)
2167 RemoteClient *client = i.getNode()->getValue();
2168 assert(client->peer_id == i.getNode()->getKey());
2170 total_sending += client->SendingCount();
2172 if(client->serialization_version == SER_FMT_VER_INVALID)
2175 client->GetNextBlocks(this, dtime, queue);
2179 // Lowest priority number comes first.
2180 // Lowest is most important.
2183 JMutexAutoLock conlock(m_con_mutex);
2185 for(u32 i=0; i<queue.size(); i++)
2187 //TODO: Calculate limit dynamically
2188 if(total_sending >= g_settings.getS32
2189 ("max_simultaneous_block_sends_server_total"))
2192 PrioritySortedBlockTransfer q = queue[i];
2194 MapBlock *block = NULL;
2197 block = m_env.getMap().getBlockNoCreate(q.pos);
2199 catch(InvalidPositionException &e)
2204 RemoteClient *client = getClient(q.peer_id);
2206 SendBlockNoLock(q.peer_id, block, client->serialization_version);
2208 client->SentBlock(q.pos);
2215 RemoteClient* Server::getClient(u16 peer_id)
2217 DSTACK(__FUNCTION_NAME);
2218 //JMutexAutoLock lock(m_con_mutex);
2219 core::map<u16, RemoteClient*>::Node *n;
2220 n = m_clients.find(peer_id);
2221 // A client should exist for all peers
2223 return n->getValue();
2226 void Server::UpdateBlockWaterPressure(MapBlock *block,
2227 core::map<v3s16, MapBlock*> &modified_blocks)
2229 MapVoxelManipulator v(&m_env.getMap());
2230 v.m_disable_water_climb =
2231 g_settings.getBool("disable_water_climb");
2233 VoxelArea area(block->getPosRelative(),
2234 block->getPosRelative() + v3s16(1,1,1)*(MAP_BLOCKSIZE-1));
2238 v.updateAreaWaterPressure(area, m_flow_active_nodes);
2240 catch(ProcessingLimitException &e)
2242 dstream<<"Processing limit reached (1)"<<std::endl;
2245 v.blitBack(modified_blocks);