MapTree.h

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/*
 * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
 * Copyright (C) 2005-2010 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 _MAPTREE_H
#define _MAPTREE_H

#include "Define.h"
#include "BoundingIntervalHierarchy.h"
#include <unordered_map>

namespace VMAP
{
 class ModelInstance;
 class GroupModel;
 class VMapManager2;

 struct TC_COMMON_API LocationInfo
 {
 LocationInfo(): hitInstance(nullptr), hitModel(nullptr), ground_Z(-G3D::finf()) { }
 const ModelInstance* hitInstance;
 const GroupModel* hitModel;
 float ground_Z;
 };

 class TC_COMMON_API StaticMapTree
 {
 typedef std::unordered_map<uint32, bool> loadedTileMap;
 typedef std::unordered_map<uint32, uint32> loadedSpawnMap;
 private:
 uint32 iMapID;
 bool iIsTiled;
 BIH iTree;
 ModelInstance* iTreeValues; // the tree entries
 uint32 iNTreeValues;

 // Store all the map tile idents that are loaded for that map
 // some maps are not splitted into tiles and we have to make sure, not removing the map before all tiles are removed
 // empty tiles have no tile file, hence map with bool instead of just a set (consistency check)
 loadedTileMap iLoadedTiles;
 // stores <tree_index, reference_count> to invalidate tree values, unload map, and to be able to report errors
 loadedSpawnMap iLoadedSpawns;
 std::string iBasePath;

 private:
 bool getIntersectionTime(const G3D::Ray& pRay, float &pMaxDist, bool pStopAtFirstHit) const;
 //bool containsLoadedMapTile(unsigned int pTileIdent) const { return(iLoadedMapTiles.containsKey(pTileIdent)); }
 public:
 static std::string getTileFileName(uint32 mapID, uint32 tileX, uint32 tileY);
 static uint32 packTileID(uint32 tileX, uint32 tileY) { return tileX<<16 | tileY; }
 static void unpackTileID(uint32 ID, uint32 &tileX, uint32 &tileY) { tileX = ID>>16; tileY = ID&0xFF; }
 static bool CanLoadMap(const std::string &basePath, uint32 mapID, uint32 tileX, uint32 tileY);

 StaticMapTree(uint32 mapID, const std::string &basePath);
 ~StaticMapTree();

 bool isInLineOfSight(const G3D::Vector3& pos1, const G3D::Vector3& pos2) const;
 bool getObjectHitPos(const G3D::Vector3& pos1, const G3D::Vector3& pos2, G3D::Vector3& pResultHitPos, float pModifyDist) const;
 float getHeight(const G3D::Vector3& pPos, float maxSearchDist) const;
 bool getAreaInfo(G3D::Vector3 &pos, uint32 &flags, int32 &adtId, int32 &rootId, int32 &groupId) const;
 bool GetLocationInfo(const G3D::Vector3 &pos, LocationInfo &info) const;

 bool InitMap(const std::string &fname, VMapManager2* vm);
 void UnloadMap(VMapManager2* vm);
 bool LoadMapTile(uint32 tileX, uint32 tileY, VMapManager2* vm);
 void UnloadMapTile(uint32 tileX, uint32 tileY, VMapManager2* vm);
 bool isTiled() const { return iIsTiled; }
 uint32 numLoadedTiles() const { return uint32(iLoadedTiles.size()); }
 void getModelInstances(ModelInstance* &models, uint32 &count);

 private:
 StaticMapTree(StaticMapTree const& right) = delete;
 StaticMapTree& operator=(StaticMapTree const& right) = delete;
 };

 struct TC_COMMON_API AreaInfo
 {
 AreaInfo(): result(false), ground_Z(-G3D::finf()), flags(0), adtId(0),
 rootId(0), groupId(0) { }
 bool result;
 float ground_Z;
 uint32 flags;
 int32 adtId;
 int32 rootId;
 int32 groupId;
 };
} // VMAP

#endif // _MAPTREE_H