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mirror of https://github.com/moparisthebest/minetest synced 2024-12-23 08:08:47 -05:00

Fixed a small memory leak in ServerEnvironment and cleaned the code a bit

This commit is contained in:
Perttu Ahola 2011-05-21 14:28:58 +03:00
parent eb6f1804fb
commit af7d50e910
2 changed files with 282 additions and 218 deletions

View File

@ -22,6 +22,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "porting.h"
#include "collision.h"
Environment::Environment()
{
m_daynight_ratio = 0.5;
@ -197,6 +198,11 @@ ServerEnvironment::ServerEnvironment(ServerMap *map, Server *server):
ServerEnvironment::~ServerEnvironment()
{
/*
Convert all objects to static (thus delete the active objects)
*/
deactivateFarObjects(-1);
// Drop/delete map
m_map->drop();
}
@ -508,230 +514,24 @@ void ServerEnvironment::step(float dtime)
{
//TimeTaker timer("ServerEnv object management");
const s16 to_active_range_blocks = 3;
const s16 to_static_range_blocks = 4;
//const f32 to_static_max_f = (to_active_max_blocks+2)*MAP_BLOCKSIZE*BS;
/*
Remove objects that satisfy (m_removed && m_known_by_count==0)
*/
{
core::list<u16> objects_to_remove;
for(core::map<u16, ServerActiveObject*>::Iterator
i = m_active_objects.getIterator();
i.atEnd()==false; i++)
{
u16 id = i.getNode()->getKey();
ServerActiveObject* obj = i.getNode()->getValue();
// This shouldn't happen but check it
if(obj == NULL)
{
dstream<<"WARNING: NULL object found in ServerEnvironment"
<<" while finding removed objects. id="<<id<<std::endl;
// Id to be removed from m_active_objects
objects_to_remove.push_back(id);
continue;
}
// If not m_removed, don't remove.
if(obj->m_removed == false)
continue;
// Delete static data from block
if(obj->m_static_exists)
{
MapBlock *block = m_map->getBlockNoCreateNoEx(obj->m_static_block);
if(block)
{
block->m_static_objects.remove(id);
block->setChangedFlag();
}
}
// If m_known_by_count > 0, don't actually remove.
if(obj->m_known_by_count > 0)
continue;
// Delete
delete obj;
// Id to be removed from m_active_objects
objects_to_remove.push_back(id);
}
// Remove references from m_active_objects
for(core::list<u16>::Iterator i = objects_to_remove.begin();
i != objects_to_remove.end(); i++)
{
m_active_objects.remove(*i);
}
}
removeRemovedObjects();
const s16 to_active_max_blocks = 3;
const f32 to_static_max_f = (to_active_max_blocks+2)*MAP_BLOCKSIZE*BS;
/*
Convert stored objects from blocks near the players to active.
*/
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
Player *player = *i;
// Ignore disconnected players
if(player->peer_id == 0)
continue;
v3f playerpos = player->getPosition();
v3s16 blockpos0 = getNodeBlockPos(floatToInt(playerpos, BS));
v3s16 bpmin = blockpos0 - v3s16(1,1,1)*to_active_max_blocks;
v3s16 bpmax = blockpos0 + v3s16(1,1,1)*to_active_max_blocks;
// Loop through all nearby blocks
for(s16 x=bpmin.X; x<=bpmax.X; x++)
for(s16 y=bpmin.Y; y<=bpmax.Y; y++)
for(s16 z=bpmin.Z; z<=bpmax.Z; z++)
{
v3s16 blockpos(x,y,z);
MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
if(block==NULL)
continue;
// Ignore if no stored objects (to not set changed flag)
if(block->m_static_objects.m_stored.size() == 0)
continue;
// This will contain the leftovers of the stored list
core::list<StaticObject> new_stored;
// Loop through stored static objects
for(core::list<StaticObject>::Iterator
i = block->m_static_objects.m_stored.begin();
i != block->m_static_objects.m_stored.end(); i++)
{
/*dstream<<"INFO: Server: Creating an active object from "
<<"static data"<<std::endl;*/
StaticObject &s_obj = *i;
// Create an active object from the data
ServerActiveObject *obj = ServerActiveObject::create
(s_obj.type, this, 0, s_obj.pos, s_obj.data);
if(obj==NULL)
{
// This is necessary to preserve stuff during bugs
// and errors
new_stored.push_back(s_obj);
continue;
}
// This will also add the object to the active static list
addActiveObject(obj);
//u16 id = addActiveObject(obj);
}
// Clear stored list
block->m_static_objects.m_stored.clear();
// Add leftover stuff to stored list
for(core::list<StaticObject>::Iterator
i = new_stored.begin();
i != new_stored.end(); i++)
{
StaticObject &s_obj = *i;
block->m_static_objects.m_stored.push_back(s_obj);
}
block->setChangedFlag();
}
}
activateNearObjects(to_active_range_blocks);
/*
Convert objects that are far away from all the players to static.
*/
{
core::list<u16> objects_to_remove;
for(core::map<u16, ServerActiveObject*>::Iterator
i = m_active_objects.getIterator();
i.atEnd()==false; i++)
{
ServerActiveObject* obj = i.getNode()->getValue();
u16 id = i.getNode()->getKey();
v3f objectpos = obj->getBasePosition();
// This shouldn't happen but check it
if(obj == NULL)
{
dstream<<"WARNING: NULL object found in ServerEnvironment"
<<std::endl;
continue;
}
// If known by some client, don't convert to static.
if(obj->m_known_by_count > 0)
continue;
// If close to some player, don't convert to static.
bool close_to_player = false;
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
Player *player = *i;
// Ignore disconnected players
if(player->peer_id == 0)
continue;
v3f playerpos = player->getPosition();
f32 d = playerpos.getDistanceFrom(objectpos);
if(d < to_static_max_f)
{
close_to_player = true;
break;
}
}
if(close_to_player)
continue;
/*
Update the static data and remove the active object.
*/
// Delete old static object
MapBlock *oldblock = NULL;
if(obj->m_static_exists)
{
MapBlock *block = m_map->getBlockNoCreateNoEx
(obj->m_static_block);
if(block)
{
block->m_static_objects.remove(id);
oldblock = block;
}
}
// Add new static object
std::string staticdata = obj->getStaticData();
StaticObject s_obj(obj->getType(), objectpos, staticdata);
// Add to the block where the object is located in
v3s16 blockpos = getNodeBlockPos(floatToInt(objectpos, BS));
MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
if(block)
{
block->m_static_objects.insert(0, s_obj);
block->setChangedFlag();
obj->m_static_exists = true;
obj->m_static_block = block->getPos();
}
// If not possible, add back to previous block
else if(oldblock)
{
oldblock->m_static_objects.insert(0, s_obj);
oldblock->setChangedFlag();
obj->m_static_exists = true;
obj->m_static_block = oldblock->getPos();
}
else{
dstream<<"WARNING: Server: Could not find a block for "
<<"storing static object"<<std::endl;
obj->m_static_exists = false;
continue;
}
/*dstream<<"INFO: Server: Stored static data. Deleting object."
<<std::endl;*/
// Delete active object
delete obj;
// Id to be removed from m_active_objects
objects_to_remove.push_back(id);
}
// Remove references from m_active_objects
for(core::list<u16>::Iterator i = objects_to_remove.begin();
i != objects_to_remove.end(); i++)
{
m_active_objects.remove(*i);
}
}
deactivateFarObjects(to_static_range_blocks);
}
if(g_settings.getBool("enable_experimental"))
@ -966,6 +766,254 @@ ActiveObjectMessage ServerEnvironment::getActiveObjectMessage()
return m_active_object_messages.pop_front();
}
/*
************ Private methods *************
*/
/*
Remove objects that satisfy (m_removed && m_known_by_count==0)
*/
void ServerEnvironment::removeRemovedObjects()
{
core::list<u16> objects_to_remove;
for(core::map<u16, ServerActiveObject*>::Iterator
i = m_active_objects.getIterator();
i.atEnd()==false; i++)
{
u16 id = i.getNode()->getKey();
ServerActiveObject* obj = i.getNode()->getValue();
// This shouldn't happen but check it
if(obj == NULL)
{
dstream<<"WARNING: NULL object found in ServerEnvironment"
<<" while finding removed objects. id="<<id<<std::endl;
// Id to be removed from m_active_objects
objects_to_remove.push_back(id);
continue;
}
// If not m_removed, don't remove.
if(obj->m_removed == false)
continue;
// Delete static data from block
if(obj->m_static_exists)
{
MapBlock *block = m_map->getBlockNoCreateNoEx(obj->m_static_block);
if(block)
{
block->m_static_objects.remove(id);
block->setChangedFlag();
}
}
// If m_known_by_count > 0, don't actually remove.
if(obj->m_known_by_count > 0)
continue;
// Delete
delete obj;
// Id to be removed from m_active_objects
objects_to_remove.push_back(id);
}
// Remove references from m_active_objects
for(core::list<u16>::Iterator i = objects_to_remove.begin();
i != objects_to_remove.end(); i++)
{
m_active_objects.remove(*i);
}
}
/*
Convert stored objects from blocks near the players to active.
*/
void ServerEnvironment::activateNearObjects(s16 range_blocks)
{
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
Player *player = *i;
// Ignore disconnected players
if(player->peer_id == 0)
continue;
v3f playerpos = player->getPosition();
v3s16 blockpos0 = getNodeBlockPos(floatToInt(playerpos, BS));
v3s16 bpmin = blockpos0 - v3s16(1,1,1)*range_blocks;
v3s16 bpmax = blockpos0 + v3s16(1,1,1)*range_blocks;
// Loop through all nearby blocks
for(s16 x=bpmin.X; x<=bpmax.X; x++)
for(s16 y=bpmin.Y; y<=bpmax.Y; y++)
for(s16 z=bpmin.Z; z<=bpmax.Z; z++)
{
v3s16 blockpos(x,y,z);
MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
if(block==NULL)
continue;
// Ignore if no stored objects (to not set changed flag)
if(block->m_static_objects.m_stored.size() == 0)
continue;
// This will contain the leftovers of the stored list
core::list<StaticObject> new_stored;
// Loop through stored static objects
for(core::list<StaticObject>::Iterator
i = block->m_static_objects.m_stored.begin();
i != block->m_static_objects.m_stored.end(); i++)
{
/*dstream<<"INFO: Server: Creating an active object from "
<<"static data"<<std::endl;*/
StaticObject &s_obj = *i;
// Create an active object from the data
ServerActiveObject *obj = ServerActiveObject::create
(s_obj.type, this, 0, s_obj.pos, s_obj.data);
if(obj==NULL)
{
// This is necessary to preserve stuff during bugs
// and errors
new_stored.push_back(s_obj);
continue;
}
// This will also add the object to the active static list
addActiveObject(obj);
//u16 id = addActiveObject(obj);
}
// Clear stored list
block->m_static_objects.m_stored.clear();
// Add leftover stuff to stored list
for(core::list<StaticObject>::Iterator
i = new_stored.begin();
i != new_stored.end(); i++)
{
StaticObject &s_obj = *i;
block->m_static_objects.m_stored.push_back(s_obj);
}
block->setChangedFlag();
}
}
}
/*
Convert objects that are far away from all the players to static.
If range_blocks == -1, convert everything to static even if known
by a player.
*/
void ServerEnvironment::deactivateFarObjects(s16 range_blocks)
{
bool force_everything = (range_blocks == -1);
core::list<u16> objects_to_remove;
for(core::map<u16, ServerActiveObject*>::Iterator
i = m_active_objects.getIterator();
i.atEnd()==false; i++)
{
ServerActiveObject* obj = i.getNode()->getValue();
u16 id = i.getNode()->getKey();
v3f objectpos = obj->getBasePosition();
// This shouldn't happen but check it
if(obj == NULL)
{
dstream<<"WARNING: NULL object found in ServerEnvironment"
<<std::endl;
assert(0);
continue;
}
if(force_everything == false)
{
// If known by some client, don't convert to static.
if(obj->m_known_by_count > 0)
continue;
// If close to some player, don't convert to static.
bool close_to_player = false;
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
Player *player = *i;
// Ignore disconnected players
if(player->peer_id == 0)
continue;
v3f playerpos = player->getPosition();
v3s16 blockpos_p = getNodeBlockPos(floatToInt(playerpos, BS));
v3s16 blockpos_o = getNodeBlockPos(floatToInt(objectpos, BS));
if(blockpos_p.X >= blockpos_o.X - range_blocks
&& blockpos_p.Y >= blockpos_o.Y - range_blocks
&& blockpos_p.Z >= blockpos_o.Z - range_blocks
&& blockpos_p.X <= blockpos_o.X + range_blocks
&& blockpos_p.Y <= blockpos_o.Y + range_blocks
&& blockpos_p.Z <= blockpos_o.Z + range_blocks)
{
close_to_player = true;
break;
}
}
if(close_to_player)
continue;
}
/*
Update the static data and remove the active object.
*/
// Delete old static object
MapBlock *oldblock = NULL;
if(obj->m_static_exists)
{
MapBlock *block = m_map->getBlockNoCreateNoEx
(obj->m_static_block);
if(block)
{
block->m_static_objects.remove(id);
oldblock = block;
}
}
// Add new static object
std::string staticdata = obj->getStaticData();
StaticObject s_obj(obj->getType(), objectpos, staticdata);
// Add to the block where the object is located in
v3s16 blockpos = getNodeBlockPos(floatToInt(objectpos, BS));
MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
if(block)
{
block->m_static_objects.insert(0, s_obj);
block->setChangedFlag();
obj->m_static_exists = true;
obj->m_static_block = block->getPos();
}
// If not possible, add back to previous block
else if(oldblock)
{
oldblock->m_static_objects.insert(0, s_obj);
oldblock->setChangedFlag();
obj->m_static_exists = true;
obj->m_static_block = oldblock->getPos();
}
else{
dstream<<"WARNING: Server: Could not find a block for "
<<"storing static object"<<std::endl;
obj->m_static_exists = false;
continue;
}
/*dstream<<"INFO: Server: Stored static data. Deleting object."
<<std::endl;*/
// Delete active object
delete obj;
// Id to be removed from m_active_objects
objects_to_remove.push_back(id);
}
// Remove references from m_active_objects
for(core::list<u16>::Iterator i = objects_to_remove.begin();
i != objects_to_remove.end(); i++)
{
m_active_objects.remove(*i);
}
}
#ifndef SERVER
/*

View File

@ -117,7 +117,7 @@ public:
ServerActiveObject* getActiveObject(u16 id);
/*
Adds an active object to the environment.
Add an active object to the environment.
Environment handles deletion of object.
Object may be deleted by environment immediately.
If id of object is 0, assigns a free id to it.
@ -127,7 +127,7 @@ public:
u16 addActiveObject(ServerActiveObject *object);
/*
Finds out what new objects have been added to
Find out what new objects have been added to
inside a radius around a position
*/
void getAddedActiveObjects(v3s16 pos, s16 radius,
@ -135,7 +135,7 @@ public:
core::map<u16, bool> &added_objects);
/*
Finds out what new objects have been removed from
Find out what new objects have been removed from
inside a radius around a position
*/
void getRemovedActiveObjects(v3s16 pos, s16 radius,
@ -143,12 +143,28 @@ public:
core::map<u16, bool> &removed_objects);
/*
Gets the next message emitted by some active object.
Get the next message emitted by some active object.
Returns a message with id=0 if no messages are available.
*/
ActiveObjectMessage getActiveObjectMessage();
private:
/*
Remove all objects that satisfy (m_removed && m_known_by_count==0)
*/
void removeRemovedObjects();
/*
Convert stored objects from blocks near the players to active.
*/
void activateNearObjects(s16 range_blocks);
/*
Convert objects that are far away from all the players to static.
If range_blocks == -1, convert everything to static even if known
by a player.
*/
void deactivateFarObjects(s16 range_blocks);
ServerMap *m_map;
Server *m_server;
core::map<u16, ServerActiveObject*> m_active_objects;