add mapmgr

This commit is contained in:
aozhiwei 2020-05-22 15:54:58 +08:00
parent 1b294da213
commit 64a0507fd1
6 changed files with 339 additions and 300 deletions

View File

@ -20,6 +20,7 @@
#include "roommgr.h"
#include "player.h"
#include "playermgr.h"
#include "mapmgr.h"
#include "ss_msgid.pb.h"
#include "ss_proto.pb.h"
@ -157,6 +158,7 @@ bool App::Init(int argc, char* argv[])
MetaMgr::Instance()->Init();
uuid.SetMachineId((node_id - 1) * MAX_NODE_ID + instance_id);
RoomMgr::Instance()->Init();
MapMgr::Instance()->Init();
PlayerMgr::Instance()->Init();
GGListener::Instance()->Init();
@ -192,6 +194,7 @@ void App::UnInit()
{
GGListener::Instance()->UnInit();
PlayerMgr::Instance()->UnInit();
MapMgr::Instance()->UnInit();
RoomMgr::Instance()->UnInit();
MetaMgr::Instance()->UnInit();
JsonDataMgr::Instance()->UnInit();

View File

@ -30,7 +30,6 @@ static void _GMOpsReload(f8::JsonHttpRequest* request)
request->resp_xobj->SetVal("errcode", 0);
request->resp_xobj->SetVal("errmsg", "");
JsonDataMgr::Instance()->Reload();
RoomMgr::Instance()->InstallReportStateTimer();
a8::UdpLog::Instance()->Info("reload config files", {});
}

200
server/gameserver/mapmgr.cc Normal file
View File

@ -0,0 +1,200 @@
#include "precompile.h"
#include "mapservice.h"
#include "gridservice.h"
#include "building.h"
#include "obstacle.h"
#include "loot.h"
#include "mapmgr.h"
#include "metamgr.h"
#include "room.h"
const int MAP_GRID_WIDTH = 64;
void MapMgr::Init()
{
map_meta_ = MetaMgr::Instance()->GetMap(2001);
if (!map_meta_) {
abort();
}
map_service_ = new MapService();
grid_service_ = new GridService();
grid_service_->Init(map_meta_->i->map_width(),
map_meta_->i->map_height(),
MetaMgr::Instance()->map_cell_width);
map_service_->Init(map_meta_->i->map_width() / MAP_GRID_WIDTH,
map_meta_->i->map_height() / MAP_GRID_WIDTH,
MAP_GRID_WIDTH);
CreateThings();
a8::XPrintf("current_uniid:%d loots:%d spawn_points:%d\n",
{
current_uniid_,
loots_.size(),
spawn_points_.size()
});
if (current_uniid_ >= FIXED_OBJECT_MAXID) {
abort();
}
}
void MapMgr::UnInit()
{
map_service_->UnInit();
grid_service_->UnInit();
A8_SAFE_DELETE(map_service_);
A8_SAFE_DELETE(grid_service_);
}
void MapMgr::AttachRoom(Room* room)
{
room->grid_service = grid_service_;
room->map_service = map_service_;
room->spawn_points = &spawn_points_;
room->newbie_born_point_meta = newbie_born_point_;
room->loots = &loots_;
room->buildings = &buildings_;
room->map_meta = map_meta_;
}
void MapMgr::CreateThings()
{
std::string map_tpl_name = map_meta_->RandTemplate();
std::map<std::string, MetaData::MapTplThing*> spawn_points_hash;
std::vector<MetaData::MapTplThing>* things = MetaMgr::Instance()->GetMapTplThing(map_tpl_name);
if (things) {
for (auto& thing_tpl : *things) {
switch (thing_tpl.i->_object_type()) {
case kMOT_Object:
{
if (thing_tpl.i->weight() >= rand() % 10000) {
CreateMapObject(thing_tpl);
}
}
break;
case kMOT_SpawnPoint:
{
if (spawn_points_hash.find(thing_tpl.i->name()) !=
spawn_points_hash.end()) {
abort();
}
spawn_points_.push_back(&thing_tpl);
spawn_points_hash[thing_tpl.i->name()] = &thing_tpl;
}
break;
default:
abort();
break;
}
}
}
if (spawn_points_hash.find(MetaMgr::Instance()->newbie_born_point) !=
spawn_points_hash.end()) {
newbie_born_point_ = spawn_points_hash[MetaMgr::Instance()->newbie_born_point];
}
}
void MapMgr::CreateMapObject(MetaData::MapTplThing& thing_tpl)
{
int thing_id = thing_tpl.RandThing();
MetaData::MapThing* thing_meta = MetaMgr::Instance()->GetMapThing(thing_id);
if (thing_meta) {
if (thing_meta->i->is_house()) {
CreateBuilding(thing_id, thing_tpl.i->x(), thing_tpl.i->y());
} else {
InternalCreateObstacle(thing_id, thing_tpl.i->x(), thing_tpl.i->y(),
[] (Obstacle* entity)
{
});
}
} else {
loots_.push_back(&thing_tpl);
}
}
void MapMgr::CreateBuilding(int thing_id, float building_x, float building_y)
{
MetaData::MapThing* thing_meta = MetaMgr::Instance()->GetMapThing(thing_id);
if (!thing_meta) {
return;
}
MetaData::Building* building_meta = MetaMgr::Instance()->GetBuilding(thing_meta->i->house_id());
if (!building_meta) {
return;
}
Building* building = new Building();
building->meta = building_meta;
building->is_permanent = true;
building->permanent_map_service = map_service_;
building->building_id = thing_id;
building->entity_uniid = AllocUniid();
building->SetPos(a8::Vec2(building_x, building_y));
building->Initialize();
uniid_hash_[building->entity_uniid] = building;
grid_service_->AddPermanentEntity(building);
for (size_t door_idx = 0; door_idx < building_meta->doors.size(); ++door_idx) {
if (door_idx >= 0 && door_idx < building->meta->doors.size()) {
MetaData::Building::Door* door_meta = &building->meta->doors[door_idx];
float x = building->GetX() + door_meta->state0->x() - building->meta->i->tilewidth() / 2.0;
float y = building->GetY() + door_meta->state0->y() - building->meta->i->tileheight() / 2.0;
InternalCreateObstacle(DOOR_THING_ID, x, y,
[building, door_idx] (Obstacle* entity)
{
entity->SetDoorInfo(building, door_idx);
});
}
}
for (auto& obj : building_meta->i->lootobj()) {
float x = building->GetX() + obj.x() - building->meta->i->tilewidth() / 2.0;
float y = building->GetY() + obj.y() - building->meta->i->tileheight() / 2.0;
if (obj._rand_space() > 0) {
int rnd = rand () % obj._rand_space();
for (auto& pair : obj._things()) {
if (rnd <= pair.value()) {
InternalCreateObstacle(pair.key(), x, y,
[building] (Obstacle* entity)
{
entity->SetBuilding(building);
});
break;
}
}
}
}
buildings_.push_back(building);
}
Obstacle* MapMgr::InternalCreateObstacle(int id, float x, float y,
std::function<void (Obstacle*)> on_precreate)
{
MetaData::MapThing* thing = MetaMgr::Instance()->GetMapThing(id);
if (thing) {
Obstacle* entity = new Obstacle();
entity->meta = thing;
entity->is_permanent = true;
entity->permanent_map_service = map_service_;
entity->entity_uniid = AllocUniid();
entity->SetPos(a8::Vec2(x, y));
entity->Initialize();
if (on_precreate) {
on_precreate(entity);
}
uniid_hash_[entity->entity_uniid] = entity;
grid_service_->AddPermanentEntity(entity);
return entity;
}
return nullptr;
}
Entity* MapMgr::GetEntityByUniId(int uniid)
{
auto itr = uniid_hash_.find(uniid);
return itr != uniid_hash_.end() ? itr->second : nullptr;
}
int MapMgr::AllocUniid()
{
while (GetEntityByUniId(++current_uniid_) || current_uniid_ == 0) {
}
return current_uniid_;
}

View File

@ -0,0 +1,46 @@
#pragma once
namespace MetaData
{
struct Map;
struct MapTplThing;
}
class Entity;
class Obstacle;
class Building;
class MapService;
class GridService;
class Room;
class MapMgr : public a8::Singleton<MapMgr>
{
private:
MapMgr() {};
friend class a8::Singleton<MapMgr>;
public:
void Init();
void UnInit();
void AttachRoom(Room* room);
private:
void CreateThings();
void CreateMapObject(MetaData::MapTplThing& thing_tpl);
void CreateBuilding(int thing_id, float building_x, float building_y);
Obstacle* InternalCreateObstacle(int id, float x, float y,
std::function<void (Obstacle*)> on_precreate);
Entity* GetEntityByUniId(int uniid);
int AllocUniid();
private:
int current_uniid_ = 0;
std::map<int, Entity*> uniid_hash_;
MapService* map_service_ = nullptr;
GridService* grid_service_ = nullptr;
MetaData::Map* map_meta_ = nullptr;
std::vector<MetaData::MapTplThing*> spawn_points_;
MetaData::MapTplThing* newbie_born_point_ = nullptr;
std::vector<MetaData::MapTplThing*> loots_;
std::vector<Building*> buildings_;
};

View File

@ -13,17 +13,11 @@
#include "metamgr.h"
#include "jsondatamgr.h"
#include "playermgr.h"
#include "mapservice.h"
#include "gridservice.h"
#include "building.h"
#include "obstacle.h"
#include "loot.h"
#include "mapmgr.h"
#include "framework/cpp/httpclientpool.h"
#include "framework/cpp/utils.h"
const int MAP_GRID_WIDTH = 64;
const int ROOM_NUM_DOWN_LIMIT = 15;
const int ROOM_NUM_UP_LIMIT = 40;
const int HUM_NUM_DOWN_LIMIT = 1000;
@ -51,28 +45,6 @@ static RoomType_e GetHumanRoomType(const cs::CMJoin& msg)
void RoomMgr::Init()
{
map_meta_ = MetaMgr::Instance()->GetMap(2001);
if (!map_meta_) {
abort();
}
map_service_ = new MapService();
grid_service_ = new GridService();
grid_service_->Init(map_meta_->i->map_width(),
map_meta_->i->map_height(),
MetaMgr::Instance()->map_cell_width);
map_service_->Init(map_meta_->i->map_width() / MAP_GRID_WIDTH,
map_meta_->i->map_height() / MAP_GRID_WIDTH,
MAP_GRID_WIDTH);
CreateThings();
a8::XPrintf("current_uniid:%d loots:%d spawn_points:%d\n",
{
current_uniid_,
loots_.size(),
spawn_points_.size()
});
if (current_uniid_ >= FIXED_OBJECT_MAXID) {
abort();
}
InstallReportStateTimer();
}
@ -86,10 +58,6 @@ void RoomMgr::UnInit()
pair.second->UnInit();
delete pair.second;
}
map_service_->UnInit();
grid_service_->UnInit();
A8_SAFE_DELETE(map_service_);
A8_SAFE_DELETE(grid_service_);
}
void RoomMgr::Update(int delta_time)
@ -190,18 +158,19 @@ Room* RoomMgr::GetRoomByIdx(int room_idx)
void RoomMgr::AddOverRoom(long long room_uuid)
{
auto callback = [] (const a8::XParams& param)
{
Room* room = RoomMgr::Instance()->GetRoomByUuid(param.sender);
if (room) {
if ((room->pending_request <= 0) ||
(a8::XGetTickCount() - room->game_over_tick > 1000 * 8)) {
RoomMgr::Instance()->room_hash_.erase(room->room_uuid);
RoomMgr::Instance()->over_room_hash_[room->room_uuid] = room;
RoomMgr::Instance()->FreeOverRoom(param.sender);
}
}
};
auto callback =
[] (const a8::XParams& param)
{
Room* room = RoomMgr::Instance()->GetRoomByUuid(param.sender);
if (room) {
if ((room->pending_request <= 0) ||
(a8::XGetTickCount() - room->game_over_tick > 1000 * 8)) {
RoomMgr::Instance()->room_hash_.erase(room->room_uuid);
RoomMgr::Instance()->over_room_hash_[room->room_uuid] = room;
RoomMgr::Instance()->FreeOverRoom(param.sender);
}
}
};
inactive_room_hash_.erase(room_uuid);
Room* room = GetRoomByUuid(room_uuid);
@ -221,40 +190,44 @@ void RoomMgr::ActiveRoom(long long room_uuid)
void RoomMgr::ReportServerState(int instance_id, const std::string& host, int port)
{
auto on_ok = [] (a8::XParams& param, a8::XObject& data)
auto on_ok =
[] (a8::XParams& param, a8::XObject& data)
{
a8::Timer::Instance()->AddDeadLineTimerAndAttach
(1000,
a8::XParams()
.SetSender(param.sender)
.SetParam1(param.param1)
.SetParam2(param.param2),
[] (const a8::XParams& param)
{
a8::Timer::Instance()->AddDeadLineTimerAndAttach(1000,
a8::XParams()
.SetSender(param.sender)
.SetParam1(param.param1)
.SetParam2(param.param2),
[] (const a8::XParams& param)
{
RoomMgr::Instance()->ReportServerState(
param.sender,
param.param1,
param.param2
);
},
&RoomMgr::Instance()->reportstate_timer_attacher_.timer_list_);
};
auto on_error = [] (a8::XParams& param, const std::string& response)
{
a8::Timer::Instance()->AddDeadLineTimerAndAttach(1000,
a8::XParams()
.SetSender(param.sender)
.SetParam1(param.param1)
.SetParam2(param.param2),
[] (const a8::XParams& param)
{
RoomMgr::Instance()->ReportServerState(
param.sender,
param.param1,
param.param2
);
},
&RoomMgr::Instance()->reportstate_timer_attacher_.timer_list_);
};
RoomMgr::Instance()->ReportServerState(
param.sender,
param.param1,
param.param2
);
},
&RoomMgr::Instance()->reportstate_timer_attacher_.timer_list_);
};
auto on_error =
[] (a8::XParams& param, const std::string& response)
{
a8::Timer::Instance()->AddDeadLineTimerAndAttach
(1000,
a8::XParams()
.SetSender(param.sender)
.SetParam1(param.param1)
.SetParam2(param.param2),
[] (const a8::XParams& param)
{
RoomMgr::Instance()->ReportServerState(
param.sender,
param.param1,
param.param2
);
},
&RoomMgr::Instance()->reportstate_timer_attacher_.timer_list_);
};
std::string url = a8::Format("http://%s:%d/webapp/index.php?c=GS&a=report&",
{
host,
@ -303,20 +276,21 @@ void RoomMgr::InstallReportStateTimer()
std::string remote_ip = master_svr_conf->At("ip")->AsXValue();
int remote_port = master_svr_conf->At("listen_port")->AsXValue();
a8::Timer::Instance()->AddDeadLineTimerAndAttach(1000 + (i + 1),
a8::XParams()
.SetSender(instance_id)
.SetParam1(remote_ip)
.SetParam2(remote_port),
[] (const a8::XParams& param)
{
RoomMgr::Instance()->ReportServerState(
param.sender,
param.param1,
param.param2
);
},
&reportstate_timer_attacher_.timer_list_);
a8::Timer::Instance()->AddDeadLineTimerAndAttach
(1000 + (i + 1),
a8::XParams()
.SetSender(instance_id)
.SetParam1(remote_ip)
.SetParam2(remote_port),
[] (const a8::XParams& param)
{
RoomMgr::Instance()->ReportServerState(
param.sender,
param.param1,
param.param2
);
},
&reportstate_timer_attacher_.timer_list_);
}
}
@ -329,152 +303,6 @@ bool RoomMgr::IsLimitJoin()
);
}
void RoomMgr::CreateThings()
{
std::string map_tpl_name = map_meta_->RandTemplate();
std::map<std::string, MetaData::MapTplThing*> spawn_points_hash;
std::vector<MetaData::MapTplThing>* things = MetaMgr::Instance()->GetMapTplThing(map_tpl_name);
if (things) {
for (auto& thing_tpl : *things) {
switch (thing_tpl.i->_object_type()) {
case kMOT_Object:
{
if (thing_tpl.i->weight() >= rand() % 10000) {
CreateMapObject(thing_tpl);
}
}
break;
case kMOT_SpawnPoint:
{
if (spawn_points_hash.find(thing_tpl.i->name()) !=
spawn_points_hash.end()) {
abort();
}
spawn_points_.push_back(&thing_tpl);
spawn_points_hash[thing_tpl.i->name()] = &thing_tpl;
}
break;
default:
abort();
break;
}
}
}
if (spawn_points_hash.find(MetaMgr::Instance()->newbie_born_point) !=
spawn_points_hash.end()) {
newbie_born_point_ = spawn_points_hash[MetaMgr::Instance()->newbie_born_point];
}
}
void RoomMgr::CreateMapObject(MetaData::MapTplThing& thing_tpl)
{
int thing_id = thing_tpl.RandThing();
MetaData::MapThing* thing_meta = MetaMgr::Instance()->GetMapThing(thing_id);
if (thing_meta) {
if (thing_meta->i->is_house()) {
CreateBuilding(thing_id, thing_tpl.i->x(), thing_tpl.i->y());
} else {
InternalCreateObstacle(thing_id, thing_tpl.i->x(), thing_tpl.i->y(),
[] (Obstacle* entity)
{
});
}
} else {
loots_.push_back(&thing_tpl);
}
}
void RoomMgr::CreateBuilding(int thing_id, float building_x, float building_y)
{
MetaData::MapThing* thing_meta = MetaMgr::Instance()->GetMapThing(thing_id);
if (!thing_meta) {
return;
}
MetaData::Building* building_meta = MetaMgr::Instance()->GetBuilding(thing_meta->i->house_id());
if (!building_meta) {
return;
}
Building* building = new Building();
#if 0
building->room = this;
#endif
building->meta = building_meta;
building->is_permanent = true;
building->permanent_map_service = map_service_;
building->building_id = thing_id;
building->entity_uniid = AllocUniid();
building->SetPos(a8::Vec2(building_x, building_y));
building->Initialize();
uniid_hash_[building->entity_uniid] = building;
grid_service_->AddPermanentEntity(building);
for (size_t door_idx = 0; door_idx < building_meta->doors.size(); ++door_idx) {
if (door_idx >= 0 && door_idx < building->meta->doors.size()) {
MetaData::Building::Door* door_meta = &building->meta->doors[door_idx];
float x = building->GetX() + door_meta->state0->x() - building->meta->i->tilewidth() / 2.0;
float y = building->GetY() + door_meta->state0->y() - building->meta->i->tileheight() / 2.0;
InternalCreateObstacle(DOOR_THING_ID, x, y,
[building, door_idx] (Obstacle* entity)
{
entity->SetDoorInfo(building, door_idx);
});
}
}
for (auto& obj : building_meta->i->lootobj()) {
float x = building->GetX() + obj.x() - building->meta->i->tilewidth() / 2.0;
float y = building->GetY() + obj.y() - building->meta->i->tileheight() / 2.0;
if (obj._rand_space() > 0) {
int rnd = rand () % obj._rand_space();
for (auto& pair : obj._things()) {
if (rnd <= pair.value()) {
InternalCreateObstacle(pair.key(), x, y,
[building] (Obstacle* entity)
{
entity->SetBuilding(building);
});
break;
}
}
}
}
buildings_.push_back(building);
}
Obstacle* RoomMgr::InternalCreateObstacle(int id, float x, float y,
std::function<void (Obstacle*)> on_precreate)
{
MetaData::MapThing* thing = MetaMgr::Instance()->GetMapThing(id);
if (thing) {
Obstacle* entity = new Obstacle();
entity->meta = thing;
entity->is_permanent = true;
entity->permanent_map_service = map_service_;
entity->entity_uniid = AllocUniid();
entity->SetPos(a8::Vec2(x, y));
entity->Initialize();
if (on_precreate) {
on_precreate(entity);
}
uniid_hash_[entity->entity_uniid] = entity;
grid_service_->AddPermanentEntity(entity);
return entity;
}
return nullptr;
}
Entity* RoomMgr::GetEntityByUniId(int uniid)
{
auto itr = uniid_hash_.find(uniid);
return itr != uniid_hash_.end() ? itr->second : nullptr;
}
int RoomMgr::AllocUniid()
{
while (GetEntityByUniId(++current_uniid_) || current_uniid_ == 0) {
}
return current_uniid_;
}
int RoomMgr::AllocRoomIdx()
{
do {
@ -498,19 +326,13 @@ Room* RoomMgr::CreateRoom(RoomType_e room_type)
room->room_type = room_type;
room->room_uuid = App::Instance()->NewUuid();
room->room_idx = AllocRoomIdx();
room->grid_service = grid_service_;
room->map_service = map_service_;
room->spawn_points = &spawn_points_;
room->newbie_born_point_meta = newbie_born_point_;
room->loots = &loots_;
room->buildings = &buildings_;
MapMgr::Instance()->AttachRoom(room);
if (GetRoomByUuid(room->room_uuid)) {
abort();
}
if (GetRoomByIdx(room->room_idx)) {
abort();
}
room->map_meta = map_meta_;
room->Init();
inactive_room_hash_[room->room_uuid] = room;
room_hash_[room->room_uuid] = room;
@ -526,23 +348,24 @@ void RoomMgr::JoinErrorHandle(const cs::CMJoin& msg, int error_code, int socket_
GGListener::Instance()->SendToClient(socket_handle, 0, notifymsg);
}
{
a8::Timer::Instance()->
AddDeadLineTimer(1000 * 2,
a8::XParams()
.SetSender(socket_handle),
[] (const a8::XParams& param)
{
GGListener::Instance()->ForceCloseChildSocket(param.sender);
});
a8::Timer::Instance()->AddDeadLineTimer
(1000 * 2,
a8::XParams()
.SetSender(socket_handle),
[] (const a8::XParams& param)
{
GGListener::Instance()->ForceCloseChildSocket(param.sender);
});
}
a8::UdpLog::Instance()->Warning("join error errcode:%d accountid:%s max_mainloop_rundelay:%d "
"room_num:%d player_num:%d online_num:%d",
{
error_code,
msg.account_id(),
App::Instance()->perf.max_run_delay_time,
RoomMgr::Instance()->RoomNum(),
App::Instance()->perf.entity_num[ET_Player],
PlayerMgr::Instance()->OnlineNum(),
});
a8::UdpLog::Instance()->Warning
("join error errcode:%d accountid:%s max_mainloop_rundelay:%d "
"room_num:%d player_num:%d online_num:%d",
{
error_code,
msg.account_id(),
App::Instance()->perf.max_run_delay_time,
RoomMgr::Instance()->RoomNum(),
App::Instance()->perf.entity_num[ET_Player],
PlayerMgr::Instance()->OnlineNum(),
});
}

View File

@ -7,23 +7,7 @@ namespace cs
class CMJoin;
}
namespace MetaData
{
struct Map;
struct MapTplThing;
}
namespace metatable
{
class DropObjJson;
}
class Room;
class Entity;
class Obstacle;
class Building;
class MapService;
class GridService;
class RoomMgr : public a8::Singleton<RoomMgr>
{
public:
@ -43,42 +27,26 @@ class RoomMgr : public a8::Singleton<RoomMgr>
int RoomNum();
int OverRoomNum();
Room* GetRoomByUuid(long long uuid);
Room* GetRoomByIdx(int room_idx);
void AddOverRoom(long long room_uuid);
void InstallReportStateTimer();
private:
void InstallReportStateTimer();
Room* GetRoomByIdx(int room_idx);
Room* GetJoinableRoom(const cs::CMJoin& msg, const RoomType_e self_room_type);
void ReportServerState(int instance_id, const std::string& host, int port);
void FreeOverRoom(long long room_uuid);
bool IsLimitJoin();
void CreateThings();
void CreateMapObject(MetaData::MapTplThing& thing_tpl);
void CreateBuilding(int thing_id, float building_x, float building_y);
Obstacle* InternalCreateObstacle(int id, float x, float y,
std::function<void (Obstacle*)> on_precreate);
Entity* GetEntityByUniId(int uniid);
int AllocUniid();
int AllocRoomIdx();
Room* CreateRoom(RoomType_e room_type);
void JoinErrorHandle(const cs::CMJoin& msg, int error_code, int socket_handle);
private:
int current_room_idx_ = 0;
std::map<long long, Room*> inactive_room_hash_;
std::map<long long, Room*> room_hash_;
std::map<int, Room*> room_idx_hash_;
std::map<long long, Room*> over_room_hash_;
a8::TimerAttacher reportstate_timer_attacher_;
int current_room_idx_ = 0;
int current_uniid_ = 0;
std::map<int, Entity*> uniid_hash_;
MapService* map_service_ = nullptr;
GridService* grid_service_ = nullptr;
MetaData::Map* map_meta_ = nullptr;
std::vector<MetaData::MapTplThing*> spawn_points_;
MetaData::MapTplThing* newbie_born_point_ = nullptr;
std::vector<MetaData::MapTplThing*> loots_;
std::vector<Building*> buildings_;
};