#include "settings.h"
#include "log.h"
#include "profiler.h"
+#include "scriptapi.h"
+#include "mapnode_contentfeatures.h"
+#include "nodemetadata.h"
+#include "main.h" // For g_settings, g_profiler
#define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
ServerEnvironment
*/
-ServerEnvironment::ServerEnvironment(ServerMap *map, Server *server):
+ServerEnvironment::ServerEnvironment(ServerMap *map, lua_State *L,
+ IGameDef *gamedef):
m_map(map),
- m_server(server),
+ m_lua(L),
+ m_gamedef(gamedef),
m_random_spawn_timer(3),
m_send_recommended_timer(0),
m_game_time(0),
//infostream<<"Checking player file "<<path<<std::endl;
// Load player to see what is its name
- ServerRemotePlayer testplayer;
+ ServerRemotePlayer testplayer(this);
{
// Open file and deserialize
std::ifstream is(path.c_str(), std::ios_base::binary);
infostream<<"Failed to read "<<path<<std::endl;
continue;
}
- testplayer.deSerialize(is);
+ testplayer.deSerialize(is, m_gamedef);
}
//infostream<<"Loaded test player with name "<<testplayer.getName()<<std::endl;
infostream<<"Checking player file "<<path<<std::endl;
// Load player to see what is its name
- ServerRemotePlayer testplayer;
+ ServerRemotePlayer testplayer(this);
{
// Open file and deserialize
std::ifstream is(path.c_str(), std::ios_base::binary);
infostream<<"Failed to read "<<path<<std::endl;
continue;
}
- testplayer.deSerialize(is);
+ testplayer.deSerialize(is, m_gamedef);
}
if(!string_allowed(testplayer.getName(), PLAYERNAME_ALLOWED_CHARS))
if(player == NULL)
{
infostream<<"Is a new player"<<std::endl;
- player = new ServerRemotePlayer();
+ player = new ServerRemotePlayer(this);
newplayer = true;
}
infostream<<"Failed to read "<<path<<std::endl;
continue;
}
- player->deSerialize(is);
+ player->deSerialize(is, m_gamedef);
}
if(newplayer)
activateObjects(block);
// Run node metadata
- bool changed = block->m_node_metadata.step((float)dtime_s);
+ bool changed = block->m_node_metadata->step((float)dtime_s);
if(changed)
{
MapEditEvent event;
}
}
+void ServerEnvironment::clearAllObjects()
+{
+ infostream<<"ServerEnvironment::clearAllObjects(): "
+ <<"Removing all active objects"<<std::endl;
+ 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();
+ // Delete static object if block is loaded
+ if(obj->m_static_exists){
+ MapBlock *block = m_map->getBlockNoCreateNoEx(obj->m_static_block);
+ if(block){
+ block->m_static_objects.remove(id);
+ block->raiseModified(MOD_STATE_WRITE_NEEDED);
+ obj->m_static_exists = false;
+ }
+ }
+ // If known by some client, don't delete immediately
+ if(obj->m_known_by_count > 0){
+ obj->m_pending_deactivation = true;
+ obj->m_removed = true;
+ continue;
+ }
+ // Deregister in scripting api
+ scriptapi_rm_object_reference(m_lua, obj);
+ // 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);
+ }
+
+ core::list<v3s16> loadable_blocks;
+ infostream<<"ServerEnvironment::clearAllObjects(): "
+ <<"Listing all loadable blocks"<<std::endl;
+ m_map->listAllLoadableBlocks(loadable_blocks);
+ infostream<<"ServerEnvironment::clearAllObjects(): "
+ <<"Done listing all loadable blocks: "
+ <<loadable_blocks.size()
+ <<", now clearing"<<std::endl;
+ u32 report_interval = loadable_blocks.size() / 10;
+ u32 num_blocks_checked = 0;
+ u32 num_blocks_cleared = 0;
+ u32 num_objs_cleared = 0;
+ for(core::list<v3s16>::Iterator i = loadable_blocks.begin();
+ i != loadable_blocks.end(); i++)
+ {
+ v3s16 p = *i;
+ MapBlock *block = m_map->emergeBlock(p, false);
+ if(!block){
+ errorstream<<"ServerEnvironment::clearAllObjects(): "
+ <<"Failed to emerge block "<<PP(p)<<std::endl;
+ continue;
+ }
+ u32 num_stored = block->m_static_objects.m_stored.size();
+ u32 num_active = block->m_static_objects.m_active.size();
+ if(num_stored != 0 || num_active != 0){
+ block->m_static_objects.m_stored.clear();
+ block->m_static_objects.m_active.clear();
+ block->raiseModified(MOD_STATE_WRITE_NEEDED);
+ num_objs_cleared += num_stored + num_active;
+ num_blocks_cleared++;
+ }
+ num_blocks_checked++;
+
+ if(num_blocks_checked % report_interval == 0){
+ float percent = 100.0 * (float)num_blocks_checked /
+ loadable_blocks.size();
+ infostream<<"ServerEnvironment::clearAllObjects(): "
+ <<"Cleared "<<num_objs_cleared<<" objects"
+ <<" in "<<num_blocks_cleared<<" blocks ("
+ <<percent<<"%)"<<std::endl;
+ }
+ }
+ infostream<<"ServerEnvironment::clearAllObjects(): "
+ <<"Finished: Cleared "<<num_objs_cleared<<" objects"
+ <<" in "<<num_blocks_cleared<<" blocks"<<std::endl;
+}
+
static void getMob_dungeon_master(Settings &properties)
{
properties.set("looks", "dungeon_master");
Handle players
*/
{
- ScopeProfiler sp(g_profiler, "SEnv: handle players avg", SPT_LOWPASS);
+ ScopeProfiler sp(g_profiler, "SEnv: handle players avg", SPT_AVG);
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
*/
if(m_active_blocks_management_interval.step(dtime, 2.0))
{
- ScopeProfiler sp(g_profiler, "SEnv: manage act. block list avg", SPT_LOWPASS);
+ ScopeProfiler sp(g_profiler, "SEnv: manage act. block list avg /2s", SPT_AVG);
/*
Get player block positions
*/
*/
if(m_active_blocks_nodemetadata_interval.step(dtime, 1.0))
{
- ScopeProfiler sp(g_profiler, "SEnv: mess in act. blocks avg", SPT_LOWPASS);
+ ScopeProfiler sp(g_profiler, "SEnv: mess in act. blocks avg /1s", SPT_AVG);
float dtime = 1.0;
block->setTimestampNoChangedFlag(m_game_time);
// Run node metadata
- bool changed = block->m_node_metadata.step(dtime);
+ bool changed = block->m_node_metadata->step(dtime);
if(changed)
{
MapEditEvent event;
if(m_active_blocks_test_interval.step(dtime, 10.0))
{
- ScopeProfiler sp(g_profiler, "SEnv: modify in blocks avg", SPT_LOWPASS);
+ ScopeProfiler sp(g_profiler, "SEnv: modify in blocks avg /10s", SPT_AVG);
//float dtime = 10.0;
for(core::map<v3s16, bool>::Iterator
if(block==NULL)
continue;
active_object_count_wider +=
- block->m_static_objects.m_active.size();
+ block->m_static_objects.m_active.size()
+ + block->m_static_objects.m_stored.size();
+
+ /*if(block->m_static_objects.m_stored.size() != 0){
+ errorstream<<"ServerEnvironment::step(): "
+ <<PP(block->getPos())<<" contains "
+ <<block->m_static_objects.m_stored.size()
+ <<" stored objects; "
+ <<"when spawning objects, when counting active "
+ <<"objects in wide area. relative position: "
+ <<"("<<x<<","<<y<<","<<z<<")"<<std::endl;
+ }*/
}
v3s16 p0;
n1.getContent() == CONTENT_AIR)
{
v3f pos = intToFloat(p1, BS);
- ServerActiveObject *obj = new RatSAO(this, 0, pos);
+ ServerActiveObject *obj = new RatSAO(this, pos);
addActiveObject(obj);
}
}
Settings properties;
getMob_dungeon_master(properties);
ServerActiveObject *obj = new MobV2SAO(
- this, 0, pos, &properties);
+ this, pos, &properties);
addActiveObject(obj);
} else if(i == 2 || i == 3){
actionstream<<"Rats spawn at "
<<PP(p1)<<std::endl;
for(int j=0; j<3; j++){
ServerActiveObject *obj = new RatSAO(
- this, 0, pos);
+ this, pos);
addActiveObject(obj);
}
} else {
actionstream<<"An oerkki spawns at "
<<PP(p1)<<std::endl;
ServerActiveObject *obj = new Oerkki1SAO(
- this, 0, pos);
+ this, pos);
addActiveObject(obj);
}
}
}
}
+ /*
+ Step script environment (run global on_step())
+ */
+ scriptapi_environment_step(m_lua, dtime);
+
/*
Step active objects
*/
{
- ScopeProfiler sp(g_profiler, "SEnv: step act. objs avg", SPT_LOWPASS);
+ ScopeProfiler sp(g_profiler, "SEnv: step act. objs avg", SPT_AVG);
//TimeTaker timer("Step active objects");
+
+ g_profiler->avg("SEnv: num of objects", m_active_objects.size());
// This helps the objects to send data at the same time
bool send_recommended = false;
m_send_recommended_timer += dtime;
- if(m_send_recommended_timer > 0.10)
+ if(m_send_recommended_timer > getSendRecommendedInterval())
{
- m_send_recommended_timer = 0;
+ m_send_recommended_timer -= getSendRecommendedInterval();
send_recommended = true;
}
*/
if(m_object_management_interval.step(dtime, 0.5))
{
- ScopeProfiler sp(g_profiler, "SEnv: remove removed objs avg", SPT_LOWPASS);
+ ScopeProfiler sp(g_profiler, "SEnv: remove removed objs avg /.5s", SPT_AVG);
/*
Remove objects that satisfy (m_removed && m_known_by_count==0)
*/
Create a ServerActiveObject
*/
- //TestSAO *obj = new TestSAO(this, 0, pos);
- //ServerActiveObject *obj = new ItemSAO(this, 0, pos, "CraftItem Stick 1");
- //ServerActiveObject *obj = new RatSAO(this, 0, pos);
- //ServerActiveObject *obj = new Oerkki1SAO(this, 0, pos);
- //ServerActiveObject *obj = new FireflySAO(this, 0, pos);
+ //TestSAO *obj = new TestSAO(this, pos);
+ //ServerActiveObject *obj = new ItemSAO(this, pos, "CraftItem Stick 1");
+ //ServerActiveObject *obj = new RatSAO(this, pos);
+ //ServerActiveObject *obj = new Oerkki1SAO(this, pos);
+ //ServerActiveObject *obj = new FireflySAO(this, pos);
infostream<<"Server: Spawning MobV2SAO at "
<<"("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"<<std::endl;
Settings properties;
getMob_dungeon_master(properties);
- ServerActiveObject *obj = new MobV2SAO(this, 0, pos, &properties);
+ ServerActiveObject *obj = new MobV2SAO(this, pos, &properties);
addActiveObject(obj);
}
#endif
bool set_changed)
{
assert(object);
- if(object->getId() == 0)
- {
+ if(object->getId() == 0){
u16 new_id = getFreeServerActiveObjectId(m_active_objects);
if(new_id == 0)
{
- infostream<<"ServerEnvironment::addActiveObjectRaw(): "
+ errorstream<<"ServerEnvironment::addActiveObjectRaw(): "
<<"no free ids available"<<std::endl;
delete object;
return 0;
}
object->setId(new_id);
}
+ else{
+ verbosestream<<"ServerEnvironment::addActiveObjectRaw(): "
+ <<"supplied with id "<<object->getId()<<std::endl;
+ }
if(isFreeServerActiveObjectId(object->getId(), m_active_objects) == false)
{
- infostream<<"ServerEnvironment::addActiveObjectRaw(): "
+ errorstream<<"ServerEnvironment::addActiveObjectRaw(): "
<<"id is not free ("<<object->getId()<<")"<<std::endl;
delete object;
return 0;
<<"added (id="<<object->getId()<<")"<<std::endl;*/
m_active_objects.insert(object->getId(), object);
-
+
+ verbosestream<<"ServerEnvironment::addActiveObjectRaw(): "
+ <<"Added id="<<object->getId()<<"; there are now "
+ <<m_active_objects.size()<<" active objects."
+ <<std::endl;
+
// Add static object to active static list of the block
v3f objectpos = object->getBasePosition();
std::string staticdata = object->getStaticData();
object->m_static_block = blockpos;
if(set_changed)
- block->setChangedFlag();
+ block->raiseModified(MOD_STATE_WRITE_NEEDED);
}
else{
- infostream<<"ServerEnv: Could not find a block for "
- <<"storing newly added static active object"<<std::endl;
+ errorstream<<"ServerEnvironment::addActiveObjectRaw(): "
+ <<"could not find block for storing id="<<object->getId()
+ <<" statically"<<std::endl;
}
+
+ // Register reference in scripting api (must be done before post-init)
+ scriptapi_add_object_reference(m_lua, object);
+ // Post-initialize object
+ object->addedToEnvironment();
return object->getId();
}
*/
if(obj->m_static_exists && obj->m_removed)
{
- MapBlock *block = m_map->getBlockNoCreateNoEx(obj->m_static_block);
+ MapBlock *block = m_map->emergeBlock(obj->m_static_block);
if(block)
{
block->m_static_objects.remove(id);
- block->setChangedFlag();
+ block->raiseModified(MOD_STATE_WRITE_NEEDED);
+ obj->m_static_exists = false;
}
}
if(obj->m_known_by_count > 0)
continue;
+ // Deregister in scripting api
+ scriptapi_rm_object_reference(m_lua, obj);
+
// Delete
delete obj;
// Id to be removed from m_active_objects
}
}
+static void print_hexdump(std::ostream &o, const std::string &data)
+{
+ const int linelength = 16;
+ for(int l=0; ; l++){
+ int i0 = linelength * l;
+ bool at_end = false;
+ int thislinelength = linelength;
+ if(i0 + thislinelength > (int)data.size()){
+ thislinelength = data.size() - i0;
+ at_end = true;
+ }
+ for(int di=0; di<linelength; di++){
+ int i = i0 + di;
+ char buf[4];
+ if(di<thislinelength)
+ snprintf(buf, 4, "%.2x ", data[i]);
+ else
+ snprintf(buf, 4, " ");
+ o<<buf;
+ }
+ o<<" ";
+ for(int di=0; di<thislinelength; di++){
+ int i = i0 + di;
+ if(data[i] >= 32)
+ o<<data[i];
+ else
+ o<<".";
+ }
+ o<<std::endl;
+ if(at_end)
+ break;
+ }
+}
+
/*
Convert stored objects from blocks near the players to active.
*/
// Ignore if no stored objects (to not set changed flag)
if(block->m_static_objects.m_stored.size() == 0)
return;
+ verbosestream<<"ServerEnvironment::activateObjects(): "
+ <<"activating objects of block "<<PP(block->getPos())
+ <<" ("<<block->m_static_objects.m_stored.size()
+ <<" objects)"<<std::endl;
+ bool large_amount = (block->m_static_objects.m_stored.size() > 49);
+ if(large_amount){
+ errorstream<<"suspiciously large amount of objects detected: "
+ <<block->m_static_objects.m_stored.size()<<" in "
+ <<PP(block->getPos())
+ <<"; removing all of them."<<std::endl;
+ // Clear stored list
+ block->m_static_objects.m_stored.clear();
+ block->raiseModified(MOD_STATE_WRITE_NEEDED);
+ return;
+ }
// A list for objects that couldn't be converted to static for some
// reason. They will be stored back.
core::list<StaticObject> new_stored;
// If couldn't create object, store static data back.
if(obj==NULL)
{
+ errorstream<<"ServerEnvironment::activateObjects(): "
+ <<"failed to create active object from static object "
+ <<"in block "<<PP(s_obj.pos/BS)
+ <<" type="<<(int)s_obj.type<<" data:"<<std::endl;
+ print_hexdump(verbosestream, s_obj.data);
+
new_stored.push_back(s_obj);
continue;
}
+ verbosestream<<"ServerEnvironment::activateObjects(): "
+ <<"activated static object pos="<<PP(s_obj.pos/BS)
+ <<" type="<<(int)s_obj.type<<std::endl;
// This will also add the object to the active static list
addActiveObjectRaw(obj, false);
- //u16 id = addActiveObjectRaw(obj, false);
}
// Clear stored list
block->m_static_objects.m_stored.clear();
StaticObject &s_obj = *i;
block->m_static_objects.m_stored.push_back(s_obj);
}
- // Block has been modified
- // NOTE: No it has not really. Save I/O here.
- //block->setChangedFlag();
+ /*
+ Note: Block hasn't really been modified here.
+ The objects have just been activated and moved from the stored
+ static list to the active static list.
+ As such, the block is essentially the same.
+ Thus, do not call block->setChangedFlag().
+ Otherwise there would be a huge amount of unnecessary I/O.
+ */
}
/*
- Convert objects that are not in active blocks to static.
+ Convert objects that are not standing inside active blocks to static.
If m_known_by_count != 0, active object is not deleted, but static
data is still updated.
// This shouldn't happen but check it
if(obj == NULL)
{
- infostream<<"NULL object found in ServerEnvironment"
+ errorstream<<"NULL object found in ServerEnvironment"
<<std::endl;
assert(0);
continue;
}
+ // If pending deactivation, let removeRemovedObjects() do it
+ if(obj->m_pending_deactivation)
+ continue;
+
u16 id = i.getNode()->getKey();
v3f objectpos = obj->getBasePosition();
if(m_active_blocks.contains(blockpos_o))
continue;
+ verbosestream<<"ServerEnvironment::deactivateFarObjects(): "
+ <<"deactivating object id="<<id<<" on inactive block "
+ <<PP(blockpos_o)<<std::endl;
+
+ // If known by some client, don't immediately delete.
+ bool pending_delete = (obj->m_known_by_count > 0 && !force_delete);
+
/*
Update the static data
*/
+ // Create new static object
+ std::string staticdata_new = obj->getStaticData();
+ StaticObject s_obj(obj->getType(), objectpos, staticdata_new);
+
+ bool stays_in_same_block = false;
+ bool data_changed = true;
+
+ if(obj->m_static_exists){
+ if(obj->m_static_block == blockpos_o)
+ stays_in_same_block = true;
+
+ MapBlock *block = m_map->emergeBlock(obj->m_static_block, false);
+
+ core::map<u16, StaticObject>::Node *n =
+ block->m_static_objects.m_active.find(id);
+ if(n){
+ StaticObject static_old = n->getValue();
+
+ float save_movem = obj->getMinimumSavedMovement();
+
+ if(static_old.data == staticdata_new &&
+ (static_old.pos - objectpos).getLength() < save_movem)
+ data_changed = false;
+ } else {
+ errorstream<<"ServerEnvironment::deactivateFarObjects(): "
+ <<"id="<<id<<" m_static_exists=true but "
+ <<"static data doesn't actually exist in "
+ <<PP(obj->m_static_block)<<std::endl;
+ }
+ }
+
+ bool shall_be_written = (!stays_in_same_block || data_changed);
+
// Delete old static object
- MapBlock *oldblock = NULL;
if(obj->m_static_exists)
{
- MapBlock *block = m_map->getBlockNoCreateNoEx
- (obj->m_static_block);
+ MapBlock *block = m_map->emergeBlock(obj->m_static_block, false);
if(block)
{
block->m_static_objects.remove(id);
- oldblock = block;
+ obj->m_static_exists = false;
+ // Only mark block as modified if data changed considerably
+ if(shall_be_written)
+ block->raiseModified(MOD_STATE_WRITE_NEEDED);
}
}
- // Create 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));
// Get or generate the block
MapBlock *block = m_map->emergeBlock(blockpos);
- /*MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
- if(block == NULL)
- {
- // Block not found. Is the old block still ok?
- if(oldblock)
- block = oldblock;
- // Load from disk or generate
- else
- block = m_map->emergeBlock(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(block->m_static_objects.m_stored.size() >= 49){
+ errorstream<<"ServerEnv: Trying to store id="<<obj->getId()
+ <<" statically but block "<<PP(blockpos)
+ <<" already contains "
+ <<block->m_static_objects.m_stored.size()
+ <<" (over 49) objects."
+ <<" Forcing delete."<<std::endl;
+ force_delete = true;
+ } else {
+ u16 new_id = pending_delete ? id : 0;
+ block->m_static_objects.insert(new_id, s_obj);
+
+ // Only mark block as modified if data changed considerably
+ if(shall_be_written)
+ block->raiseModified(MOD_STATE_WRITE_NEEDED);
+
+ obj->m_static_exists = true;
+ obj->m_static_block = block->getPos();
+ }
}
else{
- infostream<<"ServerEnv: Could not find or generate "
- <<"a block for storing static object"<<std::endl;
- obj->m_static_exists = false;
+ errorstream<<"ServerEnv: Could not find or generate "
+ <<"a block for storing id="<<obj->getId()
+ <<" statically"<<std::endl;
continue;
}
/*
- Delete active object if not known by some client,
- else set pending deactivation
+ If known by some client, set pending deactivation.
+ Otherwise delete it immediately.
*/
- // If known by some client, don't delete.
- if(obj->m_known_by_count > 0 && force_delete == false)
+ if(pending_delete)
{
+ verbosestream<<"ServerEnvironment::deactivateFarObjects(): "
+ <<"object id="<<id<<" is known by clients"
+ <<"; not deleting yet"<<std::endl;
+
obj->m_pending_deactivation = true;
continue;
}
- /*infostream<<"Server: Stored static data. Deleting object."
- <<std::endl;*/
+ verbosestream<<"ServerEnvironment::deactivateFarObjects(): "
+ <<"object id="<<id<<" is not known by clients"
+ <<"; deleting"<<std::endl;
+
+ // Deregister in scripting api
+ scriptapi_rm_object_reference(m_lua, obj);
+
// Delete active object
delete obj;
// Id to be removed from m_active_objects
ClientEnvironment
*/
-ClientEnvironment::ClientEnvironment(ClientMap *map, scene::ISceneManager *smgr):
+ClientEnvironment::ClientEnvironment(ClientMap *map, scene::ISceneManager *smgr,
+ ITextureSource *texturesource, IGameDef *gamedef):
m_map(map),
- m_smgr(smgr)
+ m_smgr(smgr),
+ m_texturesource(texturesource),
+ m_gamedef(gamedef)
{
assert(m_map);
assert(m_smgr);
}
}
-void ClientEnvironment::updateMeshes(v3s16 blockpos)
+void ClientEnvironment::updateMeshes(v3s16 blockpos, ITextureSource *tsrc)
{
- m_map->updateMeshes(blockpos, getDayNightRatio());
+ m_map->updateMeshes(blockpos, getDayNightRatio(), tsrc);
}
void ClientEnvironment::expireMeshes(bool only_daynight_diffed)
infostream<<"ClientEnvironment::addActiveObject(): "
<<"added (id="<<object->getId()<<")"<<std::endl;
m_active_objects.insert(object->getId(), object);
- object->addToScene(m_smgr);
+ // TODO: Make g_texturesource non-global
+ object->addToScene(m_smgr, m_texturesource);
return object->getId();
}
void ClientEnvironment::addActiveObject(u16 id, u8 type,
const std::string &init_data)
{
- ClientActiveObject* obj = ClientActiveObject::create(type);
+ ClientActiveObject* obj = ClientActiveObject::create(type, m_gamedef);
if(obj == NULL)
{
infostream<<"ClientEnvironment::addActiveObject(): "