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/*
* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as published by the
* Free Software Foundation; either version 3 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 Affero 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 _MMAP_MANAGER_H
#define _MMAP_MANAGER_H
#include "Common.h"
#include "DetourAlloc.h"
#include "DetourExtended.h"
#include "DetourNavMesh.h"
#include <shared_mutex>
#include <unordered_map>
#include <vector>
// memory management
inline void* dtCustomAlloc(size_t size, dtAllocHint /*hint*/)
{
return (void*)new unsigned char[size];
}
inline void dtCustomFree(void* ptr)
{
delete [] (unsigned char*)ptr;
}
// move map related classes
namespace MMAP
{
typedef std::unordered_map<uint32, dtTileRef> MMapTileSet;
typedef std::unordered_map<uint32, dtNavMeshQuery*> NavMeshQuerySet;
// dummy struct to hold map's mmap data
struct MMapData
{
MMapData(dtNavMesh* mesh) : navMesh(mesh) { }
~MMapData()
{
for (NavMeshQuerySet::iterator i = navMeshQueries.begin(); i != navMeshQueries.end(); ++i)
{
dtFreeNavMeshQuery(i->second);
}
if (navMesh)
{
dtFreeNavMesh(navMesh);
}
}
// we have to use single dtNavMeshQuery for every instance, since those are not thread safe
NavMeshQuerySet navMeshQueries; // instanceId to query
dtNavMesh* navMesh;
MMapTileSet loadedTileRefs; // maps [map grid coords] to [dtTile]
};
typedef std::unordered_map<uint32, MMapData*> MMapDataSet;
// singleton class
// holds all all access to mmap loading unloading and meshes
class MMapMgr
{
public:
MMapMgr() : loadedTiles(0), thread_safe_environment(true) { }
~MMapMgr();
void InitializeThreadUnsafe(const std::vector<uint32>& mapIds);
bool loadMap(uint32 mapId, int32 x, int32 y);
bool unloadMap(uint32 mapId, int32 x, int32 y);
bool unloadMap(uint32 mapId);
bool unloadMapInstance(uint32 mapId, uint32 instanceId);
// the returned [dtNavMeshQuery const*] is NOT threadsafe
dtNavMeshQuery const* GetNavMeshQuery(uint32 mapId, uint32 instanceId);
dtNavMesh const* GetNavMesh(uint32 mapId);
uint32 getLoadedTilesCount() const { return loadedTiles; }
uint32 getLoadedMapsCount() const { return loadedMMaps.size(); }
private:
bool loadMapData(uint32 mapId);
uint32 packTileID(int32 x, int32 y);
MMapDataSet::const_iterator GetMMapData(uint32 mapId) const;
MMapDataSet loadedMMaps;
uint32 loadedTiles;
bool thread_safe_environment;
};
}
#endif
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