MapManager.h

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/*
 * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
 * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef TRINITY_MAPMANAGER_H
#define TRINITY_MAPMANAGER_H

#include "Object.h"
#include "Map.h"
#include "MapInstanced.h"
#include "GridStates.h"
#include "MapUpdater.h"

class Transport;
struct TransportCreatureProto;

class TC_GAME_API MapManager
{
 public:
 static MapManager* instance();

 Map* CreateBaseMap(uint32 mapId);
 Map* FindBaseNonInstanceMap(uint32 mapId) const;
 Map* CreateMap(uint32 mapId, Player* player, uint32 loginInstanceId=0);
 Map* FindMap(uint32 mapId, uint32 instanceId) const;

 uint32 GetAreaId(uint32 mapid, float x, float y, float z) const
 {
 Map const* m = const_cast<MapManager*>(this)->CreateBaseMap(mapid);
 return m->GetAreaId(x, y, z);
 }
 uint32 GetZoneId(uint32 mapid, float x, float y, float z) const
 {
 Map const* m = const_cast<MapManager*>(this)->CreateBaseMap(mapid);
 return m->GetZoneId(x, y, z);
 }
 void GetZoneAndAreaId(uint32& zoneid, uint32& areaid, uint32 mapid, float x, float y, float z)
 {
 Map const* m = const_cast<MapManager*>(this)->CreateBaseMap(mapid);
 m->GetZoneAndAreaId(zoneid, areaid, x, y, z);
 }

 void Initialize(void);
 void Update(uint32);

 void SetGridCleanUpDelay(uint32 t)
 {
 if (t < MIN_GRID_DELAY)
 i_gridCleanUpDelay = MIN_GRID_DELAY;
 else
 i_gridCleanUpDelay = t;
 }

 void SetMapUpdateInterval(uint32 t)
 {
 if (t < MIN_MAP_UPDATE_DELAY)
 t = MIN_MAP_UPDATE_DELAY;

 i_timer.SetInterval(t);
 i_timer.Reset();
 }

 //void LoadGrid(int mapid, int instId, float x, float y, const WorldObject* obj, bool no_unload = false);
 void UnloadAll();

 static bool ExistMapAndVMap(uint32 mapid, float x, float y);
 static bool IsValidMAP(uint32 mapid, bool startUp);

 static bool IsValidMapCoord(uint32 mapid, float x, float y)
 {
 return IsValidMAP(mapid, false) && Trinity::IsValidMapCoord(x, y);
 }

 static bool IsValidMapCoord(uint32 mapid, float x, float y, float z)
 {
 return IsValidMAP(mapid, false) && Trinity::IsValidMapCoord(x, y, z);
 }

 static bool IsValidMapCoord(uint32 mapid, float x, float y, float z, float o)
 {
 return IsValidMAP(mapid, false) && Trinity::IsValidMapCoord(x, y, z, o);
 }

 static bool IsValidMapCoord(WorldLocation const& loc)
 {
 return IsValidMapCoord(loc.GetMapId(), loc.GetPositionX(), loc.GetPositionY(), loc.GetPositionZ(), loc.GetOrientation());
 }

 void DoDelayedMovesAndRemoves();

 Map::EnterState PlayerCannotEnter(uint32 mapid, Player* player, bool loginCheck = false);
 void InitializeVisibilityDistanceInfo();

 /* statistics */
 uint32 GetNumInstances();
 uint32 GetNumPlayersInInstances();

 // Instance ID management
 void InitInstanceIds();
 uint32 GenerateInstanceId();
 void RegisterInstanceId(uint32 instanceId);
 void FreeInstanceId(uint32 instanceId);

 uint32 GetNextInstanceId() const { return _nextInstanceId; };
 void SetNextInstanceId(uint32 nextInstanceId) { _nextInstanceId = nextInstanceId; };

 MapUpdater * GetMapUpdater() { return &m_updater; }

 template<typename Worker>
 void DoForAllMaps(Worker&& worker);

 template<typename Worker>
 void DoForAllMapsWithMapId(uint32 mapId, Worker&& worker);

private:
 typedef std::unordered_map<uint32, Map*> MapMapType;
 typedef std::vector<bool> InstanceIds;

 MapManager();
 ~MapManager();

 Map* FindBaseMap(uint32 mapId) const
 {
 MapMapType::const_iterator iter = i_maps.find(mapId);
 return (iter == i_maps.end() ? NULL : iter->second);
 }

 MapManager(const MapManager &);
 MapManager& operator=(const MapManager &);

 std::mutex _mapsLock;
 uint32 i_gridCleanUpDelay;
 MapMapType i_maps;
 IntervalTimer i_timer;

 InstanceIds _instanceIds;
 uint32 _nextInstanceId;
 MapUpdater m_updater;
};

template<typename Worker>
void MapManager::DoForAllMaps(Worker&& worker)
{
 std::lock_guard<std::mutex> lock(_mapsLock);

 for (auto& mapPair : i_maps)
 {
 Map* map = mapPair.second;
 if (MapInstanced* mapInstanced = map->ToMapInstanced())
 {
 MapInstanced::InstancedMaps& instances = mapInstanced->GetInstancedMaps();
 for (auto& instancePair : instances)
 worker(instancePair.second);
 }
 else
 worker(map);
 }
}

template<typename Worker>
inline void MapManager::DoForAllMapsWithMapId(uint32 mapId, Worker&& worker)
{
 std::lock_guard<std::mutex> lock(_mapsLock);

 auto itr = i_maps.find(mapId);
 if (itr != i_maps.end())
 {
 Map* map = itr->second;
 if (MapInstanced* mapInstanced = map->ToMapInstanced())
 {
 MapInstanced::InstancedMaps& instances = mapInstanced->GetInstancedMaps();
 for (auto& p : instances)
 worker(p.second);
 }
 else
 worker(map);
 }
}

#define sMapMgr MapManager::instance()
#endif