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https://github.com/mod-playerbots/azerothcore-wotlk.git
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105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/*
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* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Affero General Public License as published by the
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* Free Software Foundation; either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _MMAP_MANAGER_H
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#define _MMAP_MANAGER_H
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#include "Common.h"
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#include "DetourAlloc.h"
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#include "DetourExtended.h"
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#include "DetourNavMesh.h"
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#include <shared_mutex>
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#include <unordered_map>
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#include <vector>
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// memory management
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inline void* dtCustomAlloc(size_t size, dtAllocHint /*hint*/)
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{
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return (void*)new unsigned char[size];
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}
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inline void dtCustomFree(void* ptr)
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{
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delete [] (unsigned char*)ptr;
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}
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// move map related classes
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namespace MMAP
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{
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typedef std::unordered_map<uint32, dtTileRef> MMapTileSet;
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typedef std::unordered_map<uint32, dtNavMeshQuery*> NavMeshQuerySet;
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// dummy struct to hold map's mmap data
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struct MMapData
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{
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MMapData(dtNavMesh* mesh) : navMesh(mesh) { }
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~MMapData()
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{
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for (auto& navMeshQuerie : navMeshQueries)
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{
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dtFreeNavMeshQuery(navMeshQuerie.second);
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}
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if (navMesh)
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{
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dtFreeNavMesh(navMesh);
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}
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}
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// we have to use single dtNavMeshQuery for every instance, since those are not thread safe
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NavMeshQuerySet navMeshQueries; // instanceId to query
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dtNavMesh* navMesh;
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MMapTileSet loadedTileRefs; // maps [map grid coords] to [dtTile]
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};
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typedef std::unordered_map<uint32, MMapData*> MMapDataSet;
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// singleton class
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// holds all all access to mmap loading unloading and meshes
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class MMapMgr
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{
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public:
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MMapMgr() = default;
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~MMapMgr();
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void InitializeThreadUnsafe(const std::vector<uint32>& mapIds);
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bool loadMap(uint32 mapId, int32 x, int32 y);
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bool unloadMap(uint32 mapId, int32 x, int32 y);
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bool unloadMap(uint32 mapId);
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bool unloadMapInstance(uint32 mapId, uint32 instanceId);
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// the returned [dtNavMeshQuery const*] is NOT threadsafe
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dtNavMeshQuery const* GetNavMeshQuery(uint32 mapId, uint32 instanceId);
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dtNavMesh const* GetNavMesh(uint32 mapId);
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[[nodiscard]] uint32 getLoadedTilesCount() const { return loadedTiles; }
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[[nodiscard]] uint32 getLoadedMapsCount() const { return loadedMMaps.size(); }
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private:
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bool loadMapData(uint32 mapId);
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uint32 packTileID(int32 x, int32 y);
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[[nodiscard]] MMapDataSet::const_iterator GetMMapData(uint32 mapId) const;
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MMapDataSet loadedMMaps;
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uint32 loadedTiles{0};
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bool thread_safe_environment{true};
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};
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}
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#endif
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