First Commit

src/common/Collision/Maps/MapTree.h

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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 _MAPTREE_H
+#define _MAPTREE_H
+
+#include "BoundingIntervalHierarchy.h"
+#include "Define.h"
+#include <unordered_map>
+
+namespace VMAP
+{
+    class ModelInstance;
+    class GroupModel;
+    class VMapMgr2;
+    enum class ModelIgnoreFlags : uint32;
+    enum class LoadResult : uint8;
+
+    struct LocationInfo
+    {
+        LocationInfo():  ground_Z(-G3D::inf()) { }
+        const ModelInstance* hitInstance{nullptr};
+        const GroupModel* hitModel{nullptr};
+        float ground_Z;
+        int32 rootId = -1;
+    };
+
+    class 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 StopAtFirstHit, ModelIgnoreFlags ignoreFlags) 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 LoadResult CanLoadMap(const std::string& basePath, uint32 mapID, uint32 tileX, uint32 tileY);
+
+        StaticMapTree(uint32 mapID, const std::string& basePath);
+        ~StaticMapTree();
+
+        [[nodiscard]] bool isInLineOfSight(const G3D::Vector3& pos1, const G3D::Vector3& pos2, ModelIgnoreFlags ignoreFlags) const;
+        bool GetObjectHitPos(const G3D::Vector3& pos1, const G3D::Vector3& pos2, G3D::Vector3& pResultHitPos, float pModifyDist) const;
+        [[nodiscard]] 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, VMapMgr2* vm);
+        void UnloadMap(VMapMgr2* vm);
+        bool LoadMapTile(uint32 tileX, uint32 tileY, VMapMgr2* vm);
+        void UnloadMapTile(uint32 tileX, uint32 tileY, VMapMgr2* vm);
+        [[nodiscard]] bool isTiled() const { return iIsTiled; }
+        [[nodiscard]] uint32 numLoadedTiles() const { return iLoadedTiles.size(); }
+        void GetModelInstances(ModelInstance*& models, uint32& count);
+    };
+
+    struct AreaInfo
+    {
+        AreaInfo():  ground_Z(-G3D::inf()) { }
+        bool result{false};
+        float ground_Z;
+        uint32 flags{0};
+        int32 adtId{0};
+        int32 rootId{0};
+        int32 groupId{0};
+    };
+}                                                           // VMAP
+
+#endif // _MAPTREE_H