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Send only changed node metadata to clients instead of whole mapblock (#5268)

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Includes newer style changes and fixes by est31

Improve the block position de-serialization
Add type NodeMetadataMap
This commit is contained in:
SmallJoker 2018-12-04 20:37:48 +01:00 committed by GitHub
parent ae8d14b009
commit 3d66622772
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GPG Key ID: 4AEE18F83AFDEB23
18 changed files with 202 additions and 70 deletions
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1
src/client/client.h
View File

@ -185,6 +185,7 @@ public:
void handleCommand_AccessDenied(NetworkPacket* pkt);
void handleCommand_RemoveNode(NetworkPacket* pkt);
void handleCommand_AddNode(NetworkPacket* pkt);
void handleCommand_NodemetaChanged(NetworkPacket *pkt);
void handleCommand_BlockData(NetworkPacket* pkt);
void handleCommand_Inventory(NetworkPacket* pkt);
void handleCommand_TimeOfDay(NetworkPacket* pkt);

5
src/map.h
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@ -63,8 +63,7 @@ enum MapEditEventType{
MEET_REMOVENODE,
// Node swapped (changed without metadata change)
MEET_SWAPNODE,
// Node metadata of block changed (not knowing which node exactly)
// p stores block coordinate
// Node metadata changed
MEET_BLOCK_NODE_METADATA_CHANGED,
// Anything else (modified_blocks are set unsent)
MEET_OTHER
@ -76,6 +75,7 @@ struct MapEditEvent
v3s16 p;
MapNode n = CONTENT_AIR;
std::set<v3s16> modified_blocks;
bool is_private_change = false;
MapEditEvent() = default;
@ -86,6 +86,7 @@ struct MapEditEvent
event->p = p;
event->n = n;
event->modified_blocks = modified_blocks;
event->is_private_change = is_private_change;
return event;
}

2
src/network/clientopcodes.cpp
View File

@ -113,7 +113,7 @@ const ToClientCommandHandler toClientCommandTable[TOCLIENT_NUM_MSG_TYPES] =
{ "TOCLIENT_UPDATE_PLAYER_LIST", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_UpdatePlayerList }, // 0x56
{ "TOCLIENT_MODCHANNEL_MSG", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ModChannelMsg }, // 0x57
{ "TOCLIENT_MODCHANNEL_SIGNAL", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_ModChannelSignal }, // 0x58
null_command_handler,
{ "TOCLIENT_NODEMETA_CHANGED", TOCLIENT_STATE_CONNECTED, &Client::handleCommand_NodemetaChanged }, // 0x59
null_command_handler,
null_command_handler,
null_command_handler,

27
src/network/clientpackethandler.cpp
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@ -243,6 +243,33 @@ void Client::handleCommand_AddNode(NetworkPacket* pkt)
addNode(p, n, remove_metadata);
}
void Client::handleCommand_NodemetaChanged(NetworkPacket *pkt)
{
if (pkt->getSize() < 1)
return;
std::istringstream is(pkt->readLongString(), std::ios::binary);
std::stringstream sstr;
decompressZlib(is, sstr);
NodeMetadataList meta_updates_list(false);
meta_updates_list.deSerialize(sstr, m_itemdef, true);
Map &map = m_env.getMap();
for (NodeMetadataMap::const_iterator i = meta_updates_list.begin();
i != meta_updates_list.end(); ++i) {
v3s16 pos = i->first;
if (map.isValidPosition(pos) &&
map.setNodeMetadata(pos, i->second))
continue; // Prevent from deleting metadata
// Meta couldn't be set, unused metadata
delete i->second;
}
}
void Client::handleCommand_BlockData(NetworkPacket* pkt)
{
// Ignore too small packet

11
src/network/networkprotocol.h
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@ -190,6 +190,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
Add TOCLIENT_FORMSPEC_PREPEND
PROTOCOL VERSION 37:
Redo detached inventory sending
Add TOCLIENT_NODEMETA_CHANGED
*/
#define LATEST_PROTOCOL_VERSION 37
@ -638,13 +639,19 @@ enum ToClientCommand
std::string channel name
u16 message length
std::string message
*/
*/
TOCLIENT_MODCHANNEL_SIGNAL = 0x58,
/*
u8 signal id
u16 channel name length
std::string channel name
*/
*/
TOCLIENT_NODEMETA_CHANGED = 0x59,
/*
serialized and compressed node metadata
*/
TOCLIENT_SRP_BYTES_S_B = 0x60,
/*

6
src/network/serveropcodes.cpp
View File

@ -200,9 +200,9 @@ const ClientCommandFactory clientCommandFactoryTable[TOCLIENT_NUM_MSG_TYPES] =
{ "TOCLIENT_CLOUD_PARAMS", 0, true }, // 0x54
{ "TOCLIENT_FADE_SOUND", 0, true }, // 0x55
{ "TOCLIENT_UPDATE_PLAYER_LIST", 0, true }, // 0x56
{ "TOCLIENT_MODCHANNEL_MSG", 0, true}, // 0x57
{ "TOCLIENT_MODCHANNEL_SIGNAL", 0, true}, // 0x58
null_command_factory,
{ "TOCLIENT_MODCHANNEL_MSG", 0, true }, // 0x57
{ "TOCLIENT_MODCHANNEL_SIGNAL", 0, true }, // 0x58
{ "TOCLIENT_NODEMETA_CHANGED", 0, true }, // 0x59
null_command_factory,
null_command_factory,
null_command_factory,

4
src/network/serverpackethandler.cpp
View File

@ -609,7 +609,9 @@ void Server::handleCommand_InventoryAction(NetworkPacket* pkt)
ma->to_inv.applyCurrentPlayer(player->getName());
setInventoryModified(ma->from_inv, false);
setInventoryModified(ma->to_inv, false);
if (ma->from_inv != ma->to_inv) {
setInventoryModified(ma->to_inv, false);
}
bool from_inv_is_current_player =
(ma->from_inv.type == InventoryLocation::PLAYER) &&

62
src/nodemetadata.cpp
View File

@ -112,7 +112,8 @@ int NodeMetadata::countNonPrivate() const
NodeMetadataList
*/
void NodeMetadataList::serialize(std::ostream &os, u8 blockver, bool disk) const
void NodeMetadataList::serialize(std::ostream &os, u8 blockver, bool disk,
bool absolute_pos) const
{
/*
Version 0 is a placeholder for "nothing to see here; go away."
@ -128,20 +129,29 @@ void NodeMetadataList::serialize(std::ostream &os, u8 blockver, bool disk) const
writeU8(os, version);
writeU16(os, count);
for (const auto &it : m_data) {
v3s16 p = it.first;
NodeMetadata *data = it.second;
for (NodeMetadataMap::const_iterator
i = m_data.begin();
i != m_data.end(); ++i) {
v3s16 p = i->first;
NodeMetadata *data = i->second;
if (data->empty())
continue;
u16 p16 = p.Z * MAP_BLOCKSIZE * MAP_BLOCKSIZE + p.Y * MAP_BLOCKSIZE + p.X;
writeU16(os, p16);
if (absolute_pos) {
writeS16(os, p.X);
writeS16(os, p.Y);
writeS16(os, p.Z);
} else {
// Serialize positions within a mapblock
u16 p16 = (p.Z * MAP_BLOCKSIZE + p.Y) * MAP_BLOCKSIZE + p.X;
writeU16(os, p16);
}
data->serialize(os, version, disk);
}
}
void NodeMetadataList::deSerialize(std::istream &is, IItemDefManager *item_def_mgr)
void NodeMetadataList::deSerialize(std::istream &is,
IItemDefManager *item_def_mgr, bool absolute_pos)
{
clear();
@ -162,15 +172,19 @@ void NodeMetadataList::deSerialize(std::istream &is, IItemDefManager *item_def_m
u16 count = readU16(is);
for (u16 i = 0; i < count; i++) {
u16 p16 = readU16(is);
v3s16 p;
p.Z = p16 / MAP_BLOCKSIZE / MAP_BLOCKSIZE;
p16 &= MAP_BLOCKSIZE * MAP_BLOCKSIZE - 1;
p.Y = p16 / MAP_BLOCKSIZE;
p16 &= MAP_BLOCKSIZE - 1;
p.X = p16;
if (absolute_pos) {
p.X = readS16(is);
p.Y = readS16(is);
p.Z = readS16(is);
} else {
u16 p16 = readU16(is);
p.X = p16 & (MAP_BLOCKSIZE - 1);
p16 /= MAP_BLOCKSIZE;
p.Y = p16 & (MAP_BLOCKSIZE - 1);
p16 /= MAP_BLOCKSIZE;
p.Z = p16;
}
if (m_data.find(p) != m_data.end()) {
warningstream << "NodeMetadataList::deSerialize(): "
<< "already set data at position " << PP(p)
@ -193,7 +207,7 @@ std::vector<v3s16> NodeMetadataList::getAllKeys()
{
std::vector<v3s16> keys;
std::map<v3s16, NodeMetadata *>::const_iterator it;
NodeMetadataMap::const_iterator it;
for (it = m_data.begin(); it != m_data.end(); ++it)
keys.push_back(it->first);
@ -202,7 +216,7 @@ std::vector<v3s16> NodeMetadataList::getAllKeys()
NodeMetadata *NodeMetadataList::get(v3s16 p)
{
std::map<v3s16, NodeMetadata *>::const_iterator n = m_data.find(p);
NodeMetadataMap::const_iterator n = m_data.find(p);
if (n == m_data.end())
return NULL;
return n->second;
@ -212,7 +226,8 @@ void NodeMetadataList::remove(v3s16 p)
{
NodeMetadata *olddata = get(p);
if (olddata) {
delete olddata;
if (m_is_metadata_owner)
delete olddata;
m_data.erase(p);
}
}
@ -225,9 +240,10 @@ void NodeMetadataList::set(v3s16 p, NodeMetadata *d)
void NodeMetadataList::clear()
{
std::map<v3s16, NodeMetadata*>::iterator it;
for (it = m_data.begin(); it != m_data.end(); ++it) {
delete it->second;
if (m_is_metadata_owner) {
NodeMetadataMap::const_iterator it;
for (it = m_data.begin(); it != m_data.end(); ++it)
delete it->second;
}
m_data.clear();
}
@ -235,7 +251,7 @@ void NodeMetadataList::clear()
int NodeMetadataList::countNonEmpty() const
{
int n = 0;
std::map<v3s16, NodeMetadata*>::const_iterator it;
NodeMetadataMap::const_iterator it;
for (it = m_data.begin(); it != m_data.end(); ++it) {
if (!it->second->empty())
n++;

27
src/nodemetadata.h
View File

@ -70,13 +70,21 @@ private:
List of metadata of all the nodes of a block
*/
typedef std::map<v3s16, NodeMetadata *> NodeMetadataMap;
class NodeMetadataList
{
public:
NodeMetadataList(bool is_metadata_owner = true) :
m_is_metadata_owner(is_metadata_owner)
{}
~NodeMetadataList();
void serialize(std::ostream &os, u8 blockver, bool disk=true) const;
void deSerialize(std::istream &is, IItemDefManager *item_def_mgr);
void serialize(std::ostream &os, u8 blockver, bool disk = true,
bool absolute_pos = false) const;
void deSerialize(std::istream &is, IItemDefManager *item_def_mgr,
bool absolute_pos = false);
// Add all keys in this list to the vector keys
std::vector<v3s16> getAllKeys();
@ -89,8 +97,21 @@ public:
// Deletes all
void clear();
size_t size() const { return m_data.size(); }
NodeMetadataMap::const_iterator begin()
{
return m_data.begin();
}
NodeMetadataMap::const_iterator end()
{
return m_data.end();
}
private:
int countNonEmpty() const;
std::map<v3s16, NodeMetadata *> m_data;
bool m_is_metadata_owner;
NodeMetadataMap m_data;
};

9
src/rollback_interface.cpp
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@ -168,17 +168,10 @@ bool RollbackAction::applyRevert(Map *map, InventoryManager *imgr, IGameDef *gam
meta->deSerialize(is, 1); // FIXME: version bump??
}
// Inform other things that the meta data has changed
v3s16 blockpos = getContainerPos(p, MAP_BLOCKSIZE);
MapEditEvent event;
event.type = MEET_BLOCK_NODE_METADATA_CHANGED;
event.p = blockpos;
event.p = p;
map->dispatchEvent(&event);
// Set the block to be saved
MapBlock *block = map->getBlockNoCreateNoEx(blockpos);
if (block) {
block->raiseModified(MOD_STATE_WRITE_NEEDED,
MOD_REASON_REPORT_META_CHANGE);
}
} catch (InvalidPositionException &e) {
infostream << "RollbackAction::applyRevert(): "
<< "InvalidPositionException: " << e.what()

2
src/script/lua_api/l_itemstackmeta.cpp
View File

@ -46,7 +46,7 @@ void ItemStackMetaRef::clearMeta()
istack->metadata.clear();
}
void ItemStackMetaRef::reportMetadataChange()
void ItemStackMetaRef::reportMetadataChange(const std::string *name)
{
// TODO
}

2
src/script/lua_api/l_itemstackmeta.h
View File

@ -40,7 +40,7 @@ private:
virtual void clearMeta();
virtual void reportMetadataChange();
virtual void reportMetadataChange(const std::string *name = nullptr);
void setToolCapabilities(const ToolCapabilities &caps)
{

6
src/script/lua_api/l_metadata.cpp
View File

@ -122,7 +122,7 @@ int MetaDataRef::l_set_string(lua_State *L)
return 0;
meta->setString(name, str);
ref->reportMetadataChange();
ref->reportMetadataChange(&name);
return 0;
}
@ -160,7 +160,7 @@ int MetaDataRef::l_set_int(lua_State *L)
return 0;
meta->setString(name, str);
ref->reportMetadataChange();
ref->reportMetadataChange(&name);
return 0;
}
@ -198,7 +198,7 @@ int MetaDataRef::l_set_float(lua_State *L)
return 0;
meta->setString(name, str);
ref->reportMetadataChange();
ref->reportMetadataChange(&name);
return 0;
}

2
src/script/lua_api/l_metadata.h
View File

@ -37,7 +37,7 @@ public:
protected:
static MetaDataRef *checkobject(lua_State *L, int narg);
virtual void reportMetadataChange() {}
virtual void reportMetadataChange(const std::string *name = nullptr) {}
virtual Metadata *getmeta(bool auto_create) = 0;
virtual void clearMeta() = 0;

14
src/script/lua_api/l_nodemeta.cpp
View File

@ -58,21 +58,17 @@ void NodeMetaRef::clearMeta()
m_env->getMap().removeNodeMetadata(m_p);
}
void NodeMetaRef::reportMetadataChange()
void NodeMetaRef::reportMetadataChange(const std::string *name)
{
// NOTE: This same code is in rollback_interface.cpp
// Inform other things that the metadata has changed
v3s16 blockpos = getNodeBlockPos(m_p);
NodeMetadata *meta = dynamic_cast<NodeMetadata*>(m_meta);
MapEditEvent event;
event.type = MEET_BLOCK_NODE_METADATA_CHANGED;
event.p = blockpos;
event.p = m_p;
event.is_private_change = name && meta && meta->isPrivate(*name);
m_env->getMap().dispatchEvent(&event);
// Set the block to be saved
MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(blockpos);
if (block) {
block->raiseModified(MOD_STATE_WRITE_NEEDED,
MOD_REASON_REPORT_META_CHANGE);
}
}
// Exported functions

2
src/script/lua_api/l_nodemeta.h
View File

@ -60,7 +60,7 @@ private:
virtual Metadata* getmeta(bool auto_create);
virtual void clearMeta();
virtual void reportMetadataChange();
virtual void reportMetadataChange(const std::string *name = nullptr);
virtual void handleToTable(lua_State *L, Metadata *_meta);
virtual bool handleFromTable(lua_State *L, int table, Metadata *_meta);

87
src/server.cpp
View File

@ -861,6 +861,8 @@ void Server::AsyncRunStep(bool initial_step)
// We'll log the amount of each
Profiler prof;
std::list<v3s16> node_meta_updates;
while (!m_unsent_map_edit_queue.empty()) {
MapEditEvent* event = m_unsent_map_edit_queue.front();
m_unsent_map_edit_queue.pop();
@ -883,11 +885,22 @@ void Server::AsyncRunStep(bool initial_step)
sendRemoveNode(event->p, &far_players,
disable_single_change_sending ? 5 : 30);
break;
case MEET_BLOCK_NODE_METADATA_CHANGED:
infostream << "Server: MEET_BLOCK_NODE_METADATA_CHANGED" << std::endl;
prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
m_clients.markBlockposAsNotSent(event->p);
case MEET_BLOCK_NODE_METADATA_CHANGED: {
verbosestream << "Server: MEET_BLOCK_NODE_METADATA_CHANGED" << std::endl;
prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
if (!event->is_private_change) {
// Don't send the change yet. Collect them to eliminate dupes.
node_meta_updates.remove(event->p);
node_meta_updates.push_back(event->p);
}
if (MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(
getNodeBlockPos(event->p))) {
block->raiseModified(MOD_STATE_WRITE_NEEDED,
MOD_REASON_REPORT_META_CHANGE);
}
break;
}
case MEET_OTHER:
infostream << "Server: MEET_OTHER" << std::endl;
prof.add("MEET_OTHER", 1);
@ -931,6 +944,9 @@ void Server::AsyncRunStep(bool initial_step)
prof.print(verbosestream);
}
// Send all metadata updates
if (node_meta_updates.size())
sendMetadataChanged(node_meta_updates);
}
/*
@ -1224,6 +1240,7 @@ Inventory* Server::getInventory(const InventoryLocation &loc)
}
return NULL;
}
void Server::setInventoryModified(const InventoryLocation &loc, bool playerSend)
{
switch(loc.type){
@ -1248,13 +1265,10 @@ void Server::setInventoryModified(const InventoryLocation &loc, bool playerSend)
break;
case InventoryLocation::NODEMETA:
{
v3s16 blockpos = getNodeBlockPos(loc.p);
MapBlock *block = m_env->getMap().getBlockNoCreateNoEx(blockpos);
if (block)
block->raiseModified(MOD_STATE_WRITE_NEEDED);
m_clients.markBlockposAsNotSent(blockpos);
MapEditEvent event;
event.type = MEET_BLOCK_NODE_METADATA_CHANGED;
event.p = loc.p;
m_env->getMap().dispatchEvent(&event);
}
break;
case InventoryLocation::DETACHED:
@ -2159,6 +2173,57 @@ void Server::sendAddNode(v3s16 p, MapNode n, std::unordered_set<u16> *far_player
m_clients.unlock();
}
void Server::sendMetadataChanged(const std::list<v3s16> &meta_updates, float far_d_nodes)
{
float maxd = far_d_nodes * BS;
NodeMetadataList meta_updates_list(false);
std::vector<session_t> clients = m_clients.getClientIDs();
m_clients.lock();
for (session_t i : clients) {
RemoteClient *client = m_clients.lockedGetClientNoEx(i);
if (!client)
continue;
ServerActiveObject *player = m_env->getActiveObject(i);
v3f player_pos = player ? player->getBasePosition() : v3f();
for (const v3s16 &pos : meta_updates) {
NodeMetadata *meta = m_env->getMap().getNodeMetadata(pos);
if (!meta)
continue;
v3s16 block_pos = getNodeBlockPos(pos);
if (!client->isBlockSent(block_pos) || (player &&
player_pos.getDistanceFrom(intToFloat(pos, BS)) > maxd)) {
client->SetBlockNotSent(block_pos);
continue;
}
// Add the change to send list
meta_updates_list.set(pos, meta);
}
if (meta_updates_list.size() == 0)
continue;
// Send the meta changes
std::ostringstream os(std::ios::binary);
meta_updates_list.serialize(os, client->net_proto_version, false, true);
std::ostringstream oss(std::ios::binary);
compressZlib(os.str(), oss);
NetworkPacket pkt(TOCLIENT_NODEMETA_CHANGED, 0);
pkt.putLongString(oss.str());
m_clients.send(i, 0, &pkt, true);
meta_updates_list.clear();
}
m_clients.unlock();
}
void Server::SendBlockNoLock(session_t peer_id, MapBlock *block, u8 ver,
u16 net_proto_version)
{

3
src/server.h
View File

@ -424,6 +424,9 @@ private:
std::unordered_set<u16> *far_players = nullptr,
float far_d_nodes = 100, bool remove_metadata = true);
void sendMetadataChanged(const std::list<v3s16> &meta_updates,
float far_d_nodes = 100);
// Environment and Connection must be locked when called
void SendBlockNoLock(session_t peer_id, MapBlock *block, u8 ver, u16 net_proto_version);