Fixed a small memory leak in ServerEnvironment and cleaned the code a bit
authorPerttu Ahola <celeron55@gmail.com>
Sat, 21 May 2011 11:28:58 +0000 (14:28 +0300)
committerPerttu Ahola <celeron55@gmail.com>
Sat, 21 May 2011 11:28:58 +0000 (14:28 +0300)
src/environment.cpp
src/environment.h

index e472916657ede944d490dfb9ae6ec8f603520e0e..24ec667574814cd08efeaba27995986860c3193d 100644 (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
 
 /*
index 2d3feaca8e9b32583ef17ec5b4b10116da8c068d..971ded5c997e0736f8942bc6f53948728a33c66d 100644 (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;