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minetest/src/server.cpp
Perttu Ahola 38353751c9 better water
2010-11-30 15:35:03 +02:00

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/*
Minetest-c55
Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
(c) 2010 Perttu Ahola <celeron55@gmail.com>
*/
#include "server.h"
#include "utility.h"
#include <iostream>
#include "clientserver.h"
#include "map.h"
#include "jmutexautolock.h"
#include "main.h"
#include "constants.h"
void * ServerThread::Thread()
{
ThreadStarted();
DSTACK(__FUNCTION_NAME);
while(getRun())
{
try{
m_server->AsyncRunStep();
//dout_server<<"Running m_server->Receive()"<<std::endl;
m_server->Receive();
}
catch(con::NoIncomingDataException &e)
{
}
#if CATCH_UNHANDLED_EXCEPTIONS
/*
This is what has to be done in threads to get suitable debug info
*/
catch(std::exception &e)
{
dstream<<std::endl<<DTIME<<"An unhandled exception occurred: "
<<e.what()<<std::endl;
assert(0);
}
#endif
}
return NULL;
}
void * EmergeThread::Thread()
{
ThreadStarted();
DSTACK(__FUNCTION_NAME);
bool debug=false;
#if CATCH_UNHANDLED_EXCEPTIONS
try
{
#endif
/*
Get block info from queue, emerge them and send them
to clients.
After queue is empty, exit.
*/
while(getRun())
{
QueuedBlockEmerge *qptr = m_server->m_emerge_queue.pop();
if(qptr == NULL)
break;
SharedPtr<QueuedBlockEmerge> q(qptr);
v3s16 &p = q->pos;
//derr_server<<"EmergeThread::Thread(): running"<<std::endl;
/*
Try to emerge it from somewhere.
If it is only wanted as optional, only loading from disk
will be allowed.
*/
/*
Check if any peer wants it as non-optional. In that case it
will be generated.
Also decrement the emerge queue count in clients.
*/
bool optional = true;
{
core::map<u16, u8>::Iterator i;
for(i=q->peer_ids.getIterator(); i.atEnd()==false; i++)
{
//u16 peer_id = i.getNode()->getKey();
// Check flags
u8 flags = i.getNode()->getValue();
if((flags & TOSERVER_GETBLOCK_FLAG_OPTIONAL) == false)
optional = false;
}
}
/*dstream<<"EmergeThread: p="
<<"("<<p.X<<","<<p.Y<<","<<p.Z<<") "
<<"optional="<<optional<<std::endl;*/
ServerMap &map = ((ServerMap&)m_server->m_env.getMap());
core::map<v3s16, MapBlock*> changed_blocks;
core::map<v3s16, MapBlock*> lighting_invalidated_blocks;
MapBlock *block = NULL;
bool got_block = true;
core::map<v3s16, MapBlock*> modified_blocks;
{//envlock
JMutexAutoLock envlock(m_server->m_env_mutex);
//TimeTaker timer("block emerge envlock", g_device);
try{
bool only_from_disk = false;
if(optional)
only_from_disk = true;
block = map.emergeBlock(
p,
only_from_disk,
changed_blocks,
lighting_invalidated_blocks);
// If it is a dummy, block was not found on disk
if(block->isDummy())
{
//dstream<<"EmergeThread: Got a dummy block"<<std::endl;
got_block = false;
}
}
catch(InvalidPositionException &e)
{
// Block not found.
// This happens when position is over limit.
got_block = false;
}
if(got_block)
{
if(debug && changed_blocks.size() > 0)
{
dout_server<<DTIME<<"Got changed_blocks: ";
for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
i.atEnd() == false; i++)
{
MapBlock *block = i.getNode()->getValue();
v3s16 p = block->getPos();
dout_server<<"("<<p.X<<","<<p.Y<<","<<p.Z<<") ";
}
dout_server<<std::endl;
}
/*
Collect a list of blocks that have been modified in
addition to the fetched one.
*/
// Add all the "changed blocks"
for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
i.atEnd() == false; i++)
{
MapBlock *block = i.getNode()->getValue();
modified_blocks.insert(block->getPos(), block);
}
/*dstream<<"lighting "<<lighting_invalidated_blocks.size()
<<" blocks"<<std::endl;
TimeTaker timer("** updateLighting", g_device);*/
// Update lighting without locking the environment mutex,
// add modified blocks to changed blocks
map.updateLighting(lighting_invalidated_blocks, modified_blocks);
}
// If we got no block, there should be no invalidated blocks
else
{
assert(lighting_invalidated_blocks.size() == 0);
}
}//envlock
/*
Set sent status of modified blocks on clients
*/
// NOTE: Server's clients are also behind the connection mutex
JMutexAutoLock lock(m_server->m_con_mutex);
/*
Add the originally fetched block to the modified list
*/
if(got_block)
{
modified_blocks.insert(p, block);
}
/*
Set the modified blocks unsent for all the clients
*/
for(core::map<u16, RemoteClient*>::Iterator
i = m_server->m_clients.getIterator();
i.atEnd() == false; i++)
{
RemoteClient *client = i.getNode()->getValue();
if(modified_blocks.size() > 0)
{
// Remove block from sent history
client->SetBlocksNotSent(modified_blocks);
}
/*if(q->peer_ids.find(client->peer_id) != NULL)
{
// Decrement emerge queue count of client
client->BlockEmerged();
}*/
}
}
#if CATCH_UNHANDLED_EXCEPTIONS
}//try
/*
This is what has to be done in threads to get suitable debug info
*/
catch(std::exception &e)
{
dstream<<std::endl<<DTIME<<"An unhandled exception occurred: "
<<e.what()<<std::endl;
assert(0);
}
#endif
return NULL;
}
void RemoteClient::GetNextBlocks(Server *server, float dtime,
core::array<PrioritySortedBlockTransfer> &dest)
{
DSTACK(__FUNCTION_NAME);
// Won't send anything if already sending
{
JMutexAutoLock lock(m_blocks_sending_mutex);
if(m_blocks_sending.size() >= g_settings.getU16
("max_simultaneous_block_sends_per_client"))
{
//dstream<<"Not sending any blocks, Queue full."<<std::endl;
return;
}
}
Player *player = server->m_env.getPlayer(peer_id);
v3f playerpos = player->getPosition();
v3f playerspeed = player->getSpeed();
v3s16 center_nodepos = floatToInt(playerpos);
v3s16 center = getNodeBlockPos(center_nodepos);
/*
Get the starting value of the block finder radius.
*/
s16 last_nearest_unsent_d;
s16 d_start;
{
JMutexAutoLock lock(m_blocks_sent_mutex);
if(m_last_center != center)
{
m_nearest_unsent_d = 0;
m_last_center = center;
}
static float reset_counter = 0;
reset_counter += dtime;
if(reset_counter > 5.0)
{
reset_counter = 0;
m_nearest_unsent_d = 0;
}
last_nearest_unsent_d = m_nearest_unsent_d;
d_start = m_nearest_unsent_d;
}
u16 maximum_simultaneous_block_sends_setting = g_settings.getU16
("max_simultaneous_block_sends_per_client");
u16 maximum_simultaneous_block_sends =
maximum_simultaneous_block_sends_setting;
/*
Check the time from last addNode/removeNode.
Decrease send rate if player is building stuff.
*/
{
SharedPtr<JMutexAutoLock> lock(m_time_from_building.getLock());
m_time_from_building.m_value += dtime;
if(m_time_from_building.m_value
< FULL_BLOCK_SEND_ENABLE_MIN_TIME_FROM_BUILDING)
{
maximum_simultaneous_block_sends
= LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
}
}
// Serialization version used
//u8 ser_version = serialization_version;
//bool has_incomplete_blocks = false;
/*
TODO: Get this from somewhere
*/
//s16 d_max = 7;
s16 d_max = 8;
//TODO: Get this from somewhere (probably a bigger value)
s16 d_max_gen = 5;
//dstream<<"Starting from "<<d_start<<std::endl;
for(s16 d = d_start; d <= d_max; d++)
{
//dstream<<"RemoteClient::SendBlocks(): d="<<d<<std::endl;
//if(has_incomplete_blocks == false)
{
JMutexAutoLock lock(m_blocks_sent_mutex);
/*
If m_nearest_unsent_d was changed by the EmergeThread
(it can change it to 0 through SetBlockNotSent),
update our d to it.
Else update m_nearest_unsent_d
*/
if(m_nearest_unsent_d != last_nearest_unsent_d)
{
d = m_nearest_unsent_d;
}
else
{
m_nearest_unsent_d = d;
}
last_nearest_unsent_d = m_nearest_unsent_d;
}
/*
Get the border/face dot coordinates of a "d-radiused"
box
*/
core::list<v3s16> list;
getFacePositions(list, d);
core::list<v3s16>::Iterator li;
for(li=list.begin(); li!=list.end(); li++)
{
v3s16 p = *li + center;
/*
Send throttling
- Don't allow too many simultaneous transfers
- EXCEPT when the blocks are very close
Also, don't send blocks that are already flying.
*/
u16 maximum_simultaneous_block_sends_now =
maximum_simultaneous_block_sends;
if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
maximum_simultaneous_block_sends_now =
maximum_simultaneous_block_sends_setting;
{
JMutexAutoLock lock(m_blocks_sending_mutex);
// Limit is dynamically lowered when building
if(m_blocks_sending.size()
>= maximum_simultaneous_block_sends_now)
{
/*dstream<<"Not sending more blocks. Queue full. "
<<m_blocks_sending.size()
<<std::endl;*/
return;
}
if(m_blocks_sending.find(p) != NULL)
continue;
}
/*
Do not go over-limit
*/
if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
continue;
bool generate = d <= d_max_gen;
// Limit the generating area vertically to half
if(abs(p.Y - center.Y) > d_max_gen / 2)
generate = false;
/*
Don't send already sent blocks
*/
{
JMutexAutoLock lock(m_blocks_sent_mutex);
if(m_blocks_sent.find(p) != NULL)
continue;
}
/*
Check if map has this block
*/
MapBlock *block = NULL;
try
{
block = server->m_env.getMap().getBlockNoCreate(p);
}
catch(InvalidPositionException &e)
{
}
bool surely_not_found_on_disk = false;
if(block != NULL)
{
/*if(block->isIncomplete())
{
has_incomplete_blocks = true;
continue;
}*/
if(block->isDummy())
{
surely_not_found_on_disk = true;
}
}
/*
If block has been marked to not exist on disk (dummy)
and generating new ones is not wanted, skip block.
*/
if(generate == false && surely_not_found_on_disk == true)
{
// get next one.
continue;
}
/*
Add inexistent block to emerge queue.
*/
if(block == NULL || surely_not_found_on_disk)
{
/*SharedPtr<JMutexAutoLock> lock
(m_num_blocks_in_emerge_queue.getLock());*/
//TODO: Get value from somewhere
// Allow only one block in emerge queue
if(server->m_emerge_queue.peerItemCount(peer_id) < 1)
{
// Add it to the emerge queue and trigger the thread
u8 flags = 0;
if(generate == false)
flags |= TOSERVER_GETBLOCK_FLAG_OPTIONAL;
server->m_emerge_queue.addBlock(peer_id, p, flags);
server->m_emergethread.trigger();
}
// get next one.
continue;
}
/*
Add block to queue
*/
PrioritySortedBlockTransfer q((float)d, p, peer_id);
dest.push_back(q);
}
}
// Don't add anything here. The loop breaks by returning.
}
void RemoteClient::SendObjectData(
Server *server,
float dtime,
core::map<v3s16, bool> &stepped_blocks
)
{
DSTACK(__FUNCTION_NAME);
// Can't send anything without knowing version
if(serialization_version == SER_FMT_VER_INVALID)
{
dstream<<"RemoteClient::SendObjectData(): Not sending, no version."
<<std::endl;
return;
}
/*
Send a TOCLIENT_OBJECTDATA packet.
Sent as unreliable.
u16 command
u16 number of player positions
for each player:
v3s32 position*100
v3s32 speed*100
s32 pitch*100
s32 yaw*100
u16 count of blocks
for each block:
block objects
*/
std::ostringstream os(std::ios_base::binary);
u8 buf[12];
// Write command
writeU16(buf, TOCLIENT_OBJECTDATA);
os.write((char*)buf, 2);
/*
Get and write player data
*/
core::list<Player*> players = server->m_env.getPlayers();
// Write player count
u16 playercount = players.size();
writeU16(buf, playercount);
os.write((char*)buf, 2);
core::list<Player*>::Iterator i;
for(i = players.begin();
i != players.end(); i++)
{
Player *player = *i;
v3f pf = player->getPosition();
v3f sf = player->getSpeed();
v3s32 position_i(pf.X*100, pf.Y*100, pf.Z*100);
v3s32 speed_i (sf.X*100, sf.Y*100, sf.Z*100);
s32 pitch_i (player->getPitch() * 100);
s32 yaw_i (player->getYaw() * 100);
writeU16(buf, player->peer_id);
os.write((char*)buf, 2);
writeV3S32(buf, position_i);
os.write((char*)buf, 12);
writeV3S32(buf, speed_i);
os.write((char*)buf, 12);
writeS32(buf, pitch_i);
os.write((char*)buf, 4);
writeS32(buf, yaw_i);
os.write((char*)buf, 4);
}
/*
Get and write object data
*/
/*
Get nearby blocks.
For making players to be able to build to their nearby
environment (building is not possible on blocks that are not
in memory):
- Set blocks changed
- Add blocks to emerge queue if they are not found
SUGGESTION: These could be ignored from the backside of the player
TODO: Keep track of total size of packet and stop when it is too big
*/
Player *player = server->m_env.getPlayer(peer_id);
v3f playerpos = player->getPosition();
v3f playerspeed = player->getSpeed();
v3s16 center_nodepos = floatToInt(playerpos);
v3s16 center = getNodeBlockPos(center_nodepos);
//s16 d_max = ACTIVE_OBJECT_D_BLOCKS;
s16 d_max = g_settings.getS16("active_object_range");
// Number of blocks whose objects were written to bos
u16 blockcount = 0;
//core::map<v3s16, MapBlock*> blocks;
std::ostringstream bos(std::ios_base::binary);
for(s16 d = 0; d <= d_max; d++)
{
core::list<v3s16> list;
getFacePositions(list, d);
core::list<v3s16>::Iterator li;
for(li=list.begin(); li!=list.end(); li++)
{
v3s16 p = *li + center;
/*
Ignore blocks that haven't been sent to the client
*/
{
JMutexAutoLock sentlock(m_blocks_sent_mutex);
if(m_blocks_sent.find(p) == NULL)
continue;
}
// Try stepping block and add it to a send queue
try
{
// Get block
MapBlock *block = server->m_env.getMap().getBlockNoCreate(p);
// Skip block if there are no objects
if(block->getObjectCount() == 0)
continue;
// Step block if not in stepped_blocks and add to stepped_blocks
if(stepped_blocks.find(p) == NULL)
{
block->stepObjects(dtime, true);
stepped_blocks.insert(p, true);
block->setChangedFlag();
}
/*
Write objects
*/
// Write blockpos
writeV3S16(buf, p);
bos.write((char*)buf, 6);
// Write objects
block->serializeObjects(bos, serialization_version);
blockcount++;
/*
Stop collecting objects if data is already too big
*/
// Sum of player and object data sizes
s32 sum = (s32)os.tellp() + 2 + (s32)bos.tellp();
// break out if data too big
if(sum > MAX_OBJECTDATA_SIZE)
{
goto skip_subsequent;
}
} //try
catch(InvalidPositionException &e)
{
// Not in memory
// Add it to the emerge queue and trigger the thread.
// Fetch the block only if it is on disk.
// Grab and increment counter
/*SharedPtr<JMutexAutoLock> lock
(m_num_blocks_in_emerge_queue.getLock());
m_num_blocks_in_emerge_queue.m_value++;*/
// Add to queue as an anonymous fetch from disk
u8 flags = TOSERVER_GETBLOCK_FLAG_OPTIONAL;
server->m_emerge_queue.addBlock(0, p, flags);
server->m_emergethread.trigger();
}
}
}
skip_subsequent:
// Write block count
writeU16(buf, blockcount);
os.write((char*)buf, 2);
// Write block objects
os<<bos.str();
/*
Send data
*/
//dstream<<"Server: Sending object data to "<<peer_id<<std::endl;
// Make data buffer
std::string s = os.str();
SharedBuffer<u8> data((u8*)s.c_str(), s.size());
// Send as unreliable
server->m_con.Send(peer_id, 0, data, false);
}
void RemoteClient::GotBlock(v3s16 p)
{
JMutexAutoLock lock(m_blocks_sending_mutex);
JMutexAutoLock lock2(m_blocks_sent_mutex);
if(m_blocks_sending.find(p) != NULL)
m_blocks_sending.remove(p);
else
dstream<<"RemoteClient::GotBlock(): Didn't find in"
" m_blocks_sending"<<std::endl;
m_blocks_sent.insert(p, true);
}
void RemoteClient::SentBlock(v3s16 p)
{
JMutexAutoLock lock(m_blocks_sending_mutex);
if(m_blocks_sending.size() > 15)
{
dstream<<"RemoteClient::SentBlock(): "
<<"m_blocks_sending.size()="
<<m_blocks_sending.size()<<std::endl;
}
if(m_blocks_sending.find(p) == NULL)
m_blocks_sending.insert(p, 0.0);
else
dstream<<"RemoteClient::SentBlock(): Sent block"
" already in m_blocks_sending"<<std::endl;
}
void RemoteClient::SetBlockNotSent(v3s16 p)
{
JMutexAutoLock sendinglock(m_blocks_sending_mutex);
JMutexAutoLock sentlock(m_blocks_sent_mutex);
m_nearest_unsent_d = 0;
if(m_blocks_sending.find(p) != NULL)
m_blocks_sending.remove(p);
if(m_blocks_sent.find(p) != NULL)
m_blocks_sent.remove(p);
}
void RemoteClient::SetBlocksNotSent(core::map<v3s16, MapBlock*> &blocks)
{
JMutexAutoLock sendinglock(m_blocks_sending_mutex);
JMutexAutoLock sentlock(m_blocks_sent_mutex);
m_nearest_unsent_d = 0;
for(core::map<v3s16, MapBlock*>::Iterator
i = blocks.getIterator();
i.atEnd()==false; i++)
{
v3s16 p = i.getNode()->getKey();
if(m_blocks_sending.find(p) != NULL)
m_blocks_sending.remove(p);
if(m_blocks_sent.find(p) != NULL)
m_blocks_sent.remove(p);
}
}
/*void RemoteClient::BlockEmerged()
{
SharedPtr<JMutexAutoLock> lock(m_num_blocks_in_emerge_queue.getLock());
assert(m_num_blocks_in_emerge_queue.m_value > 0);
m_num_blocks_in_emerge_queue.m_value--;
}*/
/*void RemoteClient::RunSendingTimeouts(float dtime, float timeout)
{
JMutexAutoLock sendinglock(m_blocks_sending_mutex);
core::list<v3s16> remove_queue;
for(core::map<v3s16, float>::Iterator
i = m_blocks_sending.getIterator();
i.atEnd()==false; i++)
{
v3s16 p = i.getNode()->getKey();
float t = i.getNode()->getValue();
t += dtime;
i.getNode()->setValue(t);
if(t > timeout)
{
remove_queue.push_back(p);
}
}
for(core::list<v3s16>::Iterator
i = remove_queue.begin();
i != remove_queue.end(); i++)
{
m_blocks_sending.remove(*i);
}
}*/
/*
PlayerInfo
*/
PlayerInfo::PlayerInfo()
{
name[0] = 0;
}
void PlayerInfo::PrintLine(std::ostream *s)
{
(*s)<<id<<": \""<<name<<"\" ("
<<position.X<<","<<position.Y
<<","<<position.Z<<") ";
address.print(s);
(*s)<<" avg_rtt="<<avg_rtt;
(*s)<<std::endl;
}
u32 PIChecksum(core::list<PlayerInfo> &l)
{
core::list<PlayerInfo>::Iterator i;
u32 checksum = 1;
u32 a = 10;
for(i=l.begin(); i!=l.end(); i++)
{
checksum += a * (i->id+1);
checksum ^= 0x435aafcd;
a *= 10;
}
return checksum;
}
/*
Server
*/
Server::Server(
std::string mapsavedir,
HMParams hm_params,
MapParams map_params
):
m_env(new ServerMap(mapsavedir, hm_params, map_params), dout_server),
m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
m_thread(this),
m_emergethread(this)
{
m_env_mutex.Init();
m_con_mutex.Init();
m_step_dtime_mutex.Init();
m_step_dtime = 0.0;
}
Server::~Server()
{
// Stop threads
stop();
JMutexAutoLock clientslock(m_con_mutex);
for(core::map<u16, RemoteClient*>::Iterator
i = m_clients.getIterator();
i.atEnd() == false; i++)
{
u16 peer_id = i.getNode()->getKey();
// Delete player
{
JMutexAutoLock envlock(m_env_mutex);
m_env.removePlayer(peer_id);
}
// Delete client
delete i.getNode()->getValue();
}
}
void Server::start(unsigned short port)
{
DSTACK(__FUNCTION_NAME);
// Stop thread if already running
m_thread.stop();
// Initialize connection
m_con.setTimeoutMs(30);
m_con.Serve(port);
// Start thread
m_thread.setRun(true);
m_thread.Start();
dout_server<<"Server started on port "<<port<<std::endl;
}
void Server::stop()
{
DSTACK(__FUNCTION_NAME);
// Stop threads (set run=false first so both start stopping)
m_thread.setRun(false);
m_emergethread.setRun(false);
m_thread.stop();
m_emergethread.stop();
dout_server<<"Server threads stopped"<<std::endl;
}
void Server::step(float dtime)
{
DSTACK(__FUNCTION_NAME);
// Limit a bit
if(dtime > 2.0)
dtime = 2.0;
{
JMutexAutoLock lock(m_step_dtime_mutex);
m_step_dtime += dtime;
}
}
void Server::AsyncRunStep()
{
DSTACK(__FUNCTION_NAME);
float dtime;
{
JMutexAutoLock lock1(m_step_dtime_mutex);
dtime = m_step_dtime;
if(dtime < 0.001)
return;
m_step_dtime = 0.0;
}
//dstream<<"Server steps "<<dtime<<std::endl;
//dstream<<"Server::AsyncRunStep(): dtime="<<dtime<<std::endl;
{
// Has to be locked for peerAdded/Removed
JMutexAutoLock lock1(m_env_mutex);
// Process connection's timeouts
JMutexAutoLock lock2(m_con_mutex);
m_con.RunTimeouts(dtime);
}
{
// Step environment
// This also runs Map's timers
JMutexAutoLock lock(m_env_mutex);
m_env.step(dtime);
}
/*
Do background stuff
*/
// Periodically print some info
{
static float counter = 0.0;
counter += dtime;
if(counter >= 30.0)
{
counter = 0.0;
JMutexAutoLock lock2(m_con_mutex);
for(core::map<u16, RemoteClient*>::Iterator
i = m_clients.getIterator();
i.atEnd() == false; i++)
{
//u16 peer_id = i.getNode()->getKey();
RemoteClient *client = i.getNode()->getValue();
client->PrintInfo(std::cout);
}
}
}
// Run time- and client- related stuff
// NOTE: If you intend to add something here, check that it
// doesn't fit in RemoteClient::GetNextBlocks for example.
/*{
// Clients are behind connection lock
JMutexAutoLock lock(m_con_mutex);
for(core::map<u16, RemoteClient*>::Iterator
i = m_clients.getIterator();
i.atEnd() == false; i++)
{
RemoteClient *client = i.getNode()->getValue();
//con::Peer *peer = m_con.GetPeer(client->peer_id);
//client->RunSendingTimeouts(dtime, peer->resend_timeout);
}
}*/
// Send blocks to clients
SendBlocks(dtime);
// Send object positions
{
static float counter = 0.0;
counter += dtime;
if(counter >= g_settings.getFloat("objectdata_interval"))
{
JMutexAutoLock lock1(m_env_mutex);
JMutexAutoLock lock2(m_con_mutex);
SendObjectData(counter);
counter = 0.0;
}
}
// Trigger emergethread (it gets somehow gets to a
// non-triggered but bysy state sometimes)
{
static float counter = 0.0;
counter += dtime;
if(counter >= 2.0)
{
counter = 0.0;
m_emergethread.trigger();
}
}
// Save map
{
static float counter = 0.0;
counter += dtime;
if(counter >= SERVER_MAP_SAVE_INTERVAL)
{
counter = 0.0;
JMutexAutoLock lock(m_env_mutex);
// Save only changed parts
m_env.getMap().save(true);
}
}
}
void Server::Receive()
{
DSTACK(__FUNCTION_NAME);
u32 data_maxsize = 10000;
Buffer<u8> data(data_maxsize);
u16 peer_id;
u32 datasize;
try{
{
JMutexAutoLock lock(m_con_mutex);
datasize = m_con.Receive(peer_id, *data, data_maxsize);
}
ProcessData(*data, datasize, peer_id);
}
catch(con::InvalidIncomingDataException &e)
{
derr_server<<"Server::Receive(): "
"InvalidIncomingDataException: what()="
<<e.what()<<std::endl;
}
catch(con::PeerNotFoundException &e)
{
//NOTE: This is not needed anymore
// The peer has been disconnected.
// Find the associated player and remove it.
/*JMutexAutoLock envlock(m_env_mutex);
dout_server<<"ServerThread: peer_id="<<peer_id
<<" has apparently closed connection. "
<<"Removing player."<<std::endl;
m_env.removePlayer(peer_id);*/
}
}
void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
{
DSTACK(__FUNCTION_NAME);
// Environment is locked first.
JMutexAutoLock envlock(m_env_mutex);
JMutexAutoLock conlock(m_con_mutex);
con::Peer *peer;
try{
peer = m_con.GetPeer(peer_id);
}
catch(con::PeerNotFoundException &e)
{
derr_server<<DTIME<<"Server::ProcessData(): Cancelling: peer "
<<peer_id<<" not found"<<std::endl;
return;
}
//u8 peer_ser_ver = peer->serialization_version;
u8 peer_ser_ver = getClient(peer->id)->serialization_version;
try
{
if(datasize < 2)
return;
ToServerCommand command = (ToServerCommand)readU16(&data[0]);
if(command == TOSERVER_INIT)
{
// [0] u16 TOSERVER_INIT
// [2] u8 SER_FMT_VER_HIGHEST
// [3] u8[20] player_name
if(datasize < 3)
return;
derr_server<<DTIME<<"Server: Got TOSERVER_INIT from "
<<peer->id<<std::endl;
// First byte after command is maximum supported
// serialization version
u8 client_max = data[2];
u8 our_max = SER_FMT_VER_HIGHEST;
// Use the highest version supported by both
u8 deployed = core::min_(client_max, our_max);
// If it's lower than the lowest supported, give up.
if(deployed < SER_FMT_VER_LOWEST)
deployed = SER_FMT_VER_INVALID;
//peer->serialization_version = deployed;
getClient(peer->id)->pending_serialization_version = deployed;
if(deployed == SER_FMT_VER_INVALID)
{
derr_server<<DTIME<<"Server: Cannot negotiate "
"serialization version with peer "
<<peer_id<<std::endl;
return;
}
/*
Set up player
*/
Player *player = m_env.getPlayer(peer_id);
// Check if player doesn't exist
if(player == NULL)
throw con::InvalidIncomingDataException
("Server::ProcessData(): INIT: Player doesn't exist");
// update name if it was supplied
if(datasize >= 20+3)
{
data[20+3-1] = 0;
player->updateName((const char*)&data[3]);
}
// Now answer with a TOCLIENT_INIT
SharedBuffer<u8> reply(2+1+6);
writeU16(&reply[0], TOCLIENT_INIT);
writeU8(&reply[2], deployed);
writeV3S16(&reply[3], floatToInt(player->getPosition()+v3f(0,BS/2,0)));
// Send as reliable
m_con.Send(peer_id, 0, reply, true);
return;
}
if(command == TOSERVER_INIT2)
{
derr_server<<DTIME<<"Server: Got TOSERVER_INIT2 from "
<<peer->id<<std::endl;
getClient(peer->id)->serialization_version
= getClient(peer->id)->pending_serialization_version;
/*
Send some initialization data
*/
// Send player info to all players
SendPlayerInfos();
// Send inventory to player
SendInventory(peer->id);
return;
}
if(peer_ser_ver == SER_FMT_VER_INVALID)
{
derr_server<<DTIME<<"Server::ProcessData(): Cancelling: Peer"
" serialization format invalid or not initialized."
" Skipping incoming command="<<command<<std::endl;
return;
}
Player *player = m_env.getPlayer(peer_id);
if(player == NULL){
derr_server<<"Server::ProcessData(): Cancelling: "
"No player for peer_id="<<peer_id
<<std::endl;
return;
}
if(command == TOSERVER_PLAYERPOS)
{
if(datasize < 2+12+12+4+4)
return;
u32 start = 0;
v3s32 ps = readV3S32(&data[start+2]);
v3s32 ss = readV3S32(&data[start+2+12]);
f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
pitch = wrapDegrees(pitch);
yaw = wrapDegrees(yaw);
player->setPosition(position);
player->setSpeed(speed);
player->setPitch(pitch);
player->setYaw(yaw);
/*dout_server<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
<<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
<<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
}
else if(command == TOSERVER_GOTBLOCKS)
{
if(datasize < 2+1)
return;
/*
[0] u16 command
[2] u8 count
[3] v3s16 pos_0
[3+6] v3s16 pos_1
...
*/
u16 count = data[2];
for(u16 i=0; i<count; i++)
{
if((s16)datasize < 2+1+(i+1)*6)
throw con::InvalidIncomingDataException
("GOTBLOCKS length is too short");
v3s16 p = readV3S16(&data[2+1+i*6]);
/*dstream<<"Server: GOTBLOCKS ("
<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
RemoteClient *client = getClient(peer_id);
client->GotBlock(p);
}
}
else if(command == TOSERVER_DELETEDBLOCKS)
{
if(datasize < 2+1)
return;
/*
[0] u16 command
[2] u8 count
[3] v3s16 pos_0
[3+6] v3s16 pos_1
...
*/
u16 count = data[2];
for(u16 i=0; i<count; i++)
{
if((s16)datasize < 2+1+(i+1)*6)
throw con::InvalidIncomingDataException
("DELETEDBLOCKS length is too short");
v3s16 p = readV3S16(&data[2+1+i*6]);
/*dstream<<"Server: DELETEDBLOCKS ("
<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
RemoteClient *client = getClient(peer_id);
client->SetBlockNotSent(p);
}
}
else if(command == TOSERVER_CLICK_OBJECT)
{
if(datasize < 13)
return;
/*
[0] u16 command
[2] u8 button (0=left, 1=right)
[3] v3s16 block
[9] s16 id
[11] u16 item
*/
u8 button = readU8(&data[2]);
v3s16 p;
p.X = readS16(&data[3]);
p.Y = readS16(&data[5]);
p.Z = readS16(&data[7]);
s16 id = readS16(&data[9]);
//u16 item_i = readU16(&data[11]);
MapBlock *block = NULL;
try
{
block = m_env.getMap().getBlockNoCreate(p);
}
catch(InvalidPositionException &e)
{
derr_server<<"PICK_OBJECT block not found"<<std::endl;
return;
}
MapBlockObject *obj = block->getObject(id);
if(obj == NULL)
{
derr_server<<"PICK_OBJECT object not found"<<std::endl;
return;
}
//TODO: Check that object is reasonably close
// Left click
if(button == 0)
{
if(g_settings.getBool("creative_mode") == false)
{
// Skip if inventory has no free space
if(player->inventory.getUsedSlots() == player->inventory.getSize())
{
dout_server<<"Player inventory has no free space"<<std::endl;
return;
}
// Add to inventory and send inventory
InventoryItem *item = new MapBlockObjectItem
(obj->getInventoryString());
player->inventory.addItem(item);
SendInventory(player->peer_id);
}
// Remove from block
block->removeObject(id);
}
}
else if(command == TOSERVER_CLICK_GROUND)
{
if(datasize < 17)
return;
/*
length: 17
[0] u16 command
[2] u8 button (0=left, 1=right)
[3] v3s16 nodepos_undersurface
[9] v3s16 nodepos_abovesurface
[15] u16 item
*/
u8 button = readU8(&data[2]);
v3s16 p_under;
p_under.X = readS16(&data[3]);
p_under.Y = readS16(&data[5]);
p_under.Z = readS16(&data[7]);
v3s16 p_over;
p_over.X = readS16(&data[9]);
p_over.Y = readS16(&data[11]);
p_over.Z = readS16(&data[13]);
u16 item_i = readU16(&data[15]);
//TODO: Check that target is reasonably close
/*
Left button digs ground
*/
if(button == 0)
{
core::map<v3s16, MapBlock*> modified_blocks;
u8 material;
try
{
// Get material at position
material = m_env.getMap().getNode(p_under).d;
// If it's not diggable, do nothing
if(material_diggable(material) == false)
{
return;
}
}
catch(InvalidPositionException &e)
{
derr_server<<"Server: Ignoring REMOVENODE: Node not found"
<<std::endl;
return;
}
// Reset build time counter
getClient(peer->id)->m_time_from_building.set(0.0);
// Create packet
u32 replysize = 8;
SharedBuffer<u8> reply(replysize);
writeU16(&reply[0], TOCLIENT_REMOVENODE);
writeS16(&reply[2], p_under.X);
writeS16(&reply[4], p_under.Y);
writeS16(&reply[6], p_under.Z);
// Send as reliable
m_con.SendToAll(0, reply, true);
if(g_settings.getBool("creative_mode") == false)
{
// Add to inventory and send inventory
InventoryItem *item = new MaterialItem(material, 1);
player->inventory.addItem(item);
SendInventory(player->peer_id);
}
/*
Remove the node
(this takes some time so it is done after the quick stuff)
*/
m_env.getMap().removeNodeAndUpdate(p_under, modified_blocks);
} // button == 0
/*
Right button places blocks and stuff
*/
else if(button == 1)
{
// Get item
InventoryItem *item = player->inventory.getItem(item_i);
// If there is no item, it is not possible to add it anywhere
if(item == NULL)
return;
/*
Handle material items
*/
if(std::string("MaterialItem") == item->getName())
{
MaterialItem *mitem = (MaterialItem*)item;
MapNode n;
n.d = mitem->getMaterial();
try{
// Don't add a node if this is not a free space
MapNode n2 = m_env.getMap().getNode(p_over);
if(material_buildable_to(n2.d) == false)
return;
}
catch(InvalidPositionException &e)
{
derr_server<<"Server: Ignoring ADDNODE: Node not found"
<<std::endl;
return;
}
// Reset build time counter
getClient(peer->id)->m_time_from_building.set(0.0);
if(g_settings.getBool("creative_mode") == false)
{
// Remove from inventory and send inventory
if(mitem->getCount() == 1)
player->inventory.deleteItem(item_i);
else
mitem->remove(1);
// Send inventory
SendInventory(peer_id);
}
// Create packet
u32 replysize = 8 + MapNode::serializedLength(peer_ser_ver);
SharedBuffer<u8> reply(replysize);
writeU16(&reply[0], TOCLIENT_ADDNODE);
writeS16(&reply[2], p_over.X);
writeS16(&reply[4], p_over.Y);
writeS16(&reply[6], p_over.Z);
n.serialize(&reply[8], peer_ser_ver);
// Send as reliable
m_con.SendToAll(0, reply, true);
/*
Add node.
This takes some time so it is done after the quick stuff
*/
core::map<v3s16, MapBlock*> modified_blocks;
m_env.getMap().addNodeAndUpdate(p_over, n, modified_blocks);
}
/*
Handle block object items
*/
else if(std::string("MBOItem") == item->getName())
{
MapBlockObjectItem *oitem = (MapBlockObjectItem*)item;
/*dout_server<<"Trying to place a MapBlockObjectItem: "
"inventorystring=\""
<<oitem->getInventoryString()
<<"\""<<std::endl;*/
v3s16 blockpos = getNodeBlockPos(p_over);
MapBlock *block = NULL;
try
{
block = m_env.getMap().getBlockNoCreate(blockpos);
}
catch(InvalidPositionException &e)
{
derr_server<<"Error while placing object: "
"block not found"<<std::endl;
return;
}
v3s16 block_pos_i_on_map = block->getPosRelative();
v3f block_pos_f_on_map = intToFloat(block_pos_i_on_map);
v3f pos = intToFloat(p_over);
pos -= block_pos_f_on_map;
/*dout_server<<"pos="
<<"("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
<<std::endl;*/
MapBlockObject *obj = oitem->createObject
(pos, player->getYaw(), player->getPitch());
if(obj == NULL)
derr_server<<"WARNING: oitem created NULL object"
<<std::endl;
block->addObject(obj);
//dout_server<<"Placed object"<<std::endl;
if(g_settings.getBool("creative_mode") == false)
{
// Remove from inventory and send inventory
player->inventory.deleteItem(item_i);
// Send inventory
SendInventory(peer_id);
}
}
} // button == 1
/*
Catch invalid buttons
*/
else
{
derr_server<<"WARNING: Server: Invalid button "
<<button<<std::endl;
}
}
else if(command == TOSERVER_RELEASE)
{
if(datasize < 3)
return;
/*
length: 3
[0] u16 command
[2] u8 button
*/
//TODO
}
else if(command == TOSERVER_SIGNTEXT)
{
/*
u16 command
v3s16 blockpos
s16 id
u16 textlen
textdata
*/
std::string datastring((char*)&data[2], datasize-2);
std::istringstream is(datastring, std::ios_base::binary);
u8 buf[6];
// Read stuff
is.read((char*)buf, 6);
v3s16 blockpos = readV3S16(buf);
is.read((char*)buf, 2);
s16 id = readS16(buf);
is.read((char*)buf, 2);
u16 textlen = readU16(buf);
std::string text;
for(u16 i=0; i<textlen; i++)
{
is.read((char*)buf, 1);
text += (char)buf[0];
}
MapBlock *block = NULL;
try
{
block = m_env.getMap().getBlockNoCreate(blockpos);
}
catch(InvalidPositionException &e)
{
derr_server<<"Error while setting sign text: "
"block not found"<<std::endl;
return;
}
MapBlockObject *obj = block->getObject(id);
if(obj == NULL)
{
derr_server<<"Error while setting sign text: "
"object not found"<<std::endl;
return;
}
if(obj->getTypeId() != MAPBLOCKOBJECT_TYPE_SIGN)
{
derr_server<<"Error while setting sign text: "
"object is not a sign"<<std::endl;
return;
}
((SignObject*)obj)->setText(text);
obj->getBlock()->setChangedFlag();
}
else
{
derr_server<<"WARNING: Server::ProcessData(): Ignoring "
"unknown command "<<command<<std::endl;
}
} //try
catch(SendFailedException &e)
{
derr_server<<"Server::ProcessData(): SendFailedException: "
<<"what="<<e.what()
<<std::endl;
}
}
/*void Server::Send(u16 peer_id, u16 channelnum,
SharedBuffer<u8> data, bool reliable)
{
JMutexAutoLock lock(m_con_mutex);
m_con.Send(peer_id, channelnum, data, reliable);
}*/
void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver)
{
DSTACK(__FUNCTION_NAME);
/*
Create a packet with the block in the right format
*/
std::ostringstream os(std::ios_base::binary);
block->serialize(os, ver);
std::string s = os.str();
SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
u32 replysize = 8 + blockdata.getSize();
SharedBuffer<u8> reply(replysize);
v3s16 p = block->getPos();
writeU16(&reply[0], TOCLIENT_BLOCKDATA);
writeS16(&reply[2], p.X);
writeS16(&reply[4], p.Y);
writeS16(&reply[6], p.Z);
memcpy(&reply[8], *blockdata, blockdata.getSize());
/*
Send packet
*/
m_con.Send(peer_id, 1, reply, true);
}
/*void Server::SendBlock(u16 peer_id, MapBlock *block, u8 ver)
{
JMutexAutoLock conlock(m_con_mutex);
SendBlockNoLock(peer_id, block, ver);
}*/
#if 0
void Server::SendSectorMeta(u16 peer_id, core::list<v2s16> ps, u8 ver)
{
DSTACK(__FUNCTION_NAME);
dstream<<"Server sending sector meta of "
<<ps.getSize()<<" sectors"<<std::endl;
core::list<v2s16>::Iterator i = ps.begin();
core::list<v2s16> sendlist;
for(;;)
{
if(sendlist.size() == 255 || i == ps.end())
{
if(sendlist.size() == 0)
break;
/*
[0] u16 command
[2] u8 sector count
[3...] v2s16 pos + sector metadata
*/
std::ostringstream os(std::ios_base::binary);
u8 buf[4];
writeU16(buf, TOCLIENT_SECTORMETA);
os.write((char*)buf, 2);
writeU8(buf, sendlist.size());
os.write((char*)buf, 1);
for(core::list<v2s16>::Iterator
j = sendlist.begin();
j != sendlist.end(); j++)
{
// Write position
writeV2S16(buf, *j);
os.write((char*)buf, 4);
/*
Write ClientMapSector metadata
*/
/*
[0] u8 serialization version
[1] s16 corners[0]
[3] s16 corners[1]
[5] s16 corners[2]
[7] s16 corners[3]
size = 9
In which corners are in these positions
v2s16(0,0),
v2s16(1,0),
v2s16(1,1),
v2s16(0,1),
*/
// Write version
writeU8(buf, ver);
os.write((char*)buf, 1);
// Write corners
// TODO: Get real values
s16 corners[4];
((ServerMap&)m_env.getMap()).getSectorCorners(*j, corners);
writeS16(buf, corners[0]);
os.write((char*)buf, 2);
writeS16(buf, corners[1]);
os.write((char*)buf, 2);
writeS16(buf, corners[2]);
os.write((char*)buf, 2);
writeS16(buf, corners[3]);
os.write((char*)buf, 2);
}
SharedBuffer<u8> data((u8*)os.str().c_str(), os.str().size());
/*dstream<<"Server::SendSectorMeta(): sending packet"
" with "<<sendlist.size()<<" sectors"<<std::endl;*/
m_con.Send(peer_id, 1, data, true);
if(i == ps.end())
break;
sendlist.clear();
}
sendlist.push_back(*i);
i++;
}
}
#endif
core::list<PlayerInfo> Server::getPlayerInfo()
{
DSTACK(__FUNCTION_NAME);
JMutexAutoLock envlock(m_env_mutex);
JMutexAutoLock conlock(m_con_mutex);
core::list<PlayerInfo> list;
core::list<Player*> players = m_env.getPlayers();
core::list<Player*>::Iterator i;
for(i = players.begin();
i != players.end(); i++)
{
PlayerInfo info;
Player *player = *i;
try{
con::Peer *peer = m_con.GetPeer(player->peer_id);
info.id = peer->id;
info.address = peer->address;
info.avg_rtt = peer->avg_rtt;
}
catch(con::PeerNotFoundException &e)
{
// Outdated peer info
info.id = 0;
info.address = Address(0,0,0,0,0);
info.avg_rtt = 0.0;
}
snprintf(info.name, PLAYERNAME_SIZE, "%s", player->getName());
info.position = player->getPosition();
list.push_back(info);
}
return list;
}
void Server::peerAdded(con::Peer *peer)
{
DSTACK(__FUNCTION_NAME);
dout_server<<"Server::peerAdded(): peer->id="
<<peer->id<<std::endl;
// Connection is already locked when this is called.
//JMutexAutoLock lock(m_con_mutex);
// Error check
core::map<u16, RemoteClient*>::Node *n;
n = m_clients.find(peer->id);
// The client shouldn't already exist
assert(n == NULL);
// Create client
RemoteClient *client = new RemoteClient();
client->peer_id = peer->id;
m_clients.insert(client->peer_id, client);
// Create player
{
// Already locked when called
//JMutexAutoLock envlock(m_env_mutex);
Player *player = m_env.getPlayer(peer->id);
// The player shouldn't already exist
assert(player == NULL);
player = new RemotePlayer();
player->peer_id = peer->id;
/*
Set player position
*/
// Get zero sector (it could have been unloaded to disk)
m_env.getMap().emergeSector(v2s16(0,0));
// Get ground height at origin
f32 groundheight = m_env.getMap().getGroundHeight(v2s16(0,0), true);
// The zero sector should have been generated
assert(groundheight > GROUNDHEIGHT_VALID_MINVALUE);
// Don't go underwater
if(groundheight < WATER_LEVEL)
groundheight = WATER_LEVEL;
player->setPosition(intToFloat(v3s16(
0,
groundheight + 1,
0
)));
/*
Add player to environment
*/
m_env.addPlayer(player);
/*
Add stuff to inventory
*/
if(g_settings.getBool("creative_mode"))
{
// Give all materials
assert(USEFUL_MATERIAL_COUNT <= PLAYER_INVENTORY_SIZE);
for(u16 i=0; i<USEFUL_MATERIAL_COUNT; i++)
{
InventoryItem *item = new MaterialItem(i, 1);
player->inventory.addItem(item);
}
// Sign
{
InventoryItem *item = new MapBlockObjectItem("Sign Example text");
bool r = player->inventory.addItem(item);
assert(r == true);
}
/*// Rat
{
InventoryItem *item = new MapBlockObjectItem("Rat");
bool r = player->inventory.addItem(item);
assert(r == true);
}*/
}
else
{
// Give some lights
{
InventoryItem *item = new MaterialItem(3, 999);
bool r = player->inventory.addItem(item);
assert(r == true);
}
// and some signs
for(u16 i=0; i<4; i++)
{
InventoryItem *item = new MapBlockObjectItem("Sign Example text");
bool r = player->inventory.addItem(item);
assert(r == true);
}
/*// and some rats
for(u16 i=0; i<4; i++)
{
InventoryItem *item = new MapBlockObjectItem("Rat");
bool r = player->inventory.addItem(item);
assert(r == true);
}*/
}
}
}
void Server::deletingPeer(con::Peer *peer, bool timeout)
{
DSTACK(__FUNCTION_NAME);
dout_server<<"Server::deletingPeer(): peer->id="
<<peer->id<<", timeout="<<timeout<<std::endl;
// Connection is already locked when this is called.
//JMutexAutoLock lock(m_con_mutex);
// Error check
core::map<u16, RemoteClient*>::Node *n;
n = m_clients.find(peer->id);
// The client should exist
assert(n != NULL);
// Delete player
{
// Already locked when called
//JMutexAutoLock envlock(m_env_mutex);
m_env.removePlayer(peer->id);
}
// Delete client
delete m_clients[peer->id];
m_clients.remove(peer->id);
// Send player info to all clients
SendPlayerInfos();
}
void Server::SendObjectData(float dtime)
{
DSTACK(__FUNCTION_NAME);
core::map<v3s16, bool> stepped_blocks;
for(core::map<u16, RemoteClient*>::Iterator
i = m_clients.getIterator();
i.atEnd() == false; i++)
{
u16 peer_id = i.getNode()->getKey();
RemoteClient *client = i.getNode()->getValue();
assert(client->peer_id == peer_id);
if(client->serialization_version == SER_FMT_VER_INVALID)
continue;
client->SendObjectData(this, dtime, stepped_blocks);
}
}
void Server::SendPlayerInfos()
{
DSTACK(__FUNCTION_NAME);
//JMutexAutoLock envlock(m_env_mutex);
core::list<Player*> players = m_env.getPlayers();
u32 player_count = players.getSize();
u32 datasize = 2+(2+PLAYERNAME_SIZE)*player_count;
SharedBuffer<u8> data(datasize);
writeU16(&data[0], TOCLIENT_PLAYERINFO);
u32 start = 2;
core::list<Player*>::Iterator i;
for(i = players.begin();
i != players.end(); i++)
{
Player *player = *i;
/*dstream<<"Server sending player info for player with "
"peer_id="<<player->peer_id<<std::endl;*/
writeU16(&data[start], player->peer_id);
snprintf((char*)&data[start+2], PLAYERNAME_SIZE, "%s", player->getName());
start += 2+PLAYERNAME_SIZE;
}
//JMutexAutoLock conlock(m_con_mutex);
// Send as reliable
m_con.SendToAll(0, data, true);
}
void Server::SendInventory(u16 peer_id)
{
DSTACK(__FUNCTION_NAME);
//JMutexAutoLock envlock(m_env_mutex);
Player* player = m_env.getPlayer(peer_id);
std::ostringstream os;
//os.imbue(std::locale("C"));
player->inventory.serialize(os);
std::string s = os.str();
SharedBuffer<u8> data(s.size()+2);
writeU16(&data[0], TOCLIENT_INVENTORY);
memcpy(&data[2], s.c_str(), s.size());
//JMutexAutoLock conlock(m_con_mutex);
// Send as reliable
m_con.Send(peer_id, 0, data, true);
}
void Server::SendBlocks(float dtime)
{
DSTACK(__FUNCTION_NAME);
JMutexAutoLock envlock(m_env_mutex);
core::array<PrioritySortedBlockTransfer> queue;
s32 total_sending = 0;
for(core::map<u16, RemoteClient*>::Iterator
i = m_clients.getIterator();
i.atEnd() == false; i++)
{
RemoteClient *client = i.getNode()->getValue();
assert(client->peer_id == i.getNode()->getKey());
total_sending += client->SendingCount();
if(client->serialization_version == SER_FMT_VER_INVALID)
continue;
client->GetNextBlocks(this, dtime, queue);
}
// Sort.
// Lowest priority number comes first.
// Lowest is most important.
queue.sort();
JMutexAutoLock conlock(m_con_mutex);
for(u32 i=0; i<queue.size(); i++)
{
//TODO: Calculate limit dynamically
if(total_sending >= g_settings.getS32
("max_simultaneous_block_sends_server_total"))
break;
PrioritySortedBlockTransfer q = queue[i];
MapBlock *block = NULL;
try
{
block = m_env.getMap().getBlockNoCreate(q.pos);
}
catch(InvalidPositionException &e)
{
continue;
}
RemoteClient *client = getClient(q.peer_id);
SendBlockNoLock(q.peer_id, block, client->serialization_version);
client->SentBlock(q.pos);
total_sending++;
}
}
RemoteClient* Server::getClient(u16 peer_id)
{
DSTACK(__FUNCTION_NAME);
//JMutexAutoLock lock(m_con_mutex);
core::map<u16, RemoteClient*>::Node *n;
n = m_clients.find(peer_id);
// A client should exist for all peers
assert(n != NULL);
return n->getValue();
}
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