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diff --git a/libs/assimp/code/AssetLib/Q3BSP/Q3BSPFileImporter.h b/libs/assimp/code/AssetLib/Q3BSP/Q3BSPFileImporter.h
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+++ b/libs/assimp/code/AssetLib/Q3BSP/Q3BSPFileImporter.h
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+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+#ifndef ASSIMP_Q3BSPFILEIMPORTER_H_INC
+#define ASSIMP_Q3BSPFILEIMPORTER_H_INC
+
+#include <assimp/BaseImporter.h>
+
+#include <map>
+#include <string>
+
+struct aiMesh;
+struct aiNode;
+struct aiFace;
+struct aiMaterial;
+struct aiTexture;
+
+namespace Assimp {
+    class ZipArchiveIOSystem;
+
+namespace Q3BSP {
+    struct Q3BSPModel;
+    struct sQ3BSPFace;
+}
+
+// ------------------------------------------------------------------------------------------------
+/** Loader to import BSP-levels from a PK3 archive or from a unpacked BSP-level.
+ */
+// ------------------------------------------------------------------------------------------------
+class Q3BSPFileImporter : public BaseImporter {
+public:
+    /// @brief  Default constructor.
+    Q3BSPFileImporter();
+
+    /// @brief  Destructor.
+    ~Q3BSPFileImporter() override;
+
+    /// @brief  Returns whether the class can handle the format of the given file.
+    /// @remark See BaseImporter::CanRead() for details.
+    bool CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig ) const override;
+
+protected:
+    using FaceMap = std::map<std::string, std::vector<Q3BSP::sQ3BSPFace*>*>;
+    using FaceMapIt = std::map<std::string, std::vector<Q3BSP::sQ3BSPFace*>* >::iterator;
+    using FaceMapConstIt = std::map<std::string, std::vector<Q3BSP::sQ3BSPFace*>*>::const_iterator;
+
+    const aiImporterDesc* GetInfo () const override;
+    void InternReadFile(const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler) override;
+    void separateMapName( const std::string &rImportName, std::string &rArchiveName, std::string &rMapName );
+    bool findFirstMapInArchive(ZipArchiveIOSystem &rArchive, std::string &rMapName );
+    void CreateDataFromImport( const Q3BSP::Q3BSPModel *pModel, aiScene* pScene, ZipArchiveIOSystem *pArchive );
+    void CreateNodes( const Q3BSP::Q3BSPModel *pModel, aiScene* pScene, aiNode *pParent );
+    aiNode *CreateTopology( const Q3BSP::Q3BSPModel *pModel, unsigned int materialIdx,
+        std::vector<Q3BSP::sQ3BSPFace*> &rArray, aiMesh  **pMesh );
+    void createTriangleTopology( const Q3BSP::Q3BSPModel *pModel, Q3BSP::sQ3BSPFace *pQ3BSPFace, aiMesh* pMesh, unsigned int &rFaceIdx,
+        unsigned int &rVertIdx  );
+    void createMaterials( const Q3BSP::Q3BSPModel *pModel, aiScene* pScene, ZipArchiveIOSystem *pArchive );
+    size_t countData( const std::vector<Q3BSP::sQ3BSPFace*> &rArray ) const;
+    size_t countFaces( const std::vector<Q3BSP::sQ3BSPFace*> &rArray ) const;
+    size_t countTriangles( const std::vector<Q3BSP::sQ3BSPFace*> &rArray ) const;
+    void createMaterialMap( const Q3BSP::Q3BSPModel *pModel);
+    aiFace *getNextFace( aiMesh *pMesh, unsigned int &rFaceIdx );
+    bool importTextureFromArchive( const Q3BSP::Q3BSPModel *pModel, ZipArchiveIOSystem *pArchive, aiScene* pScene,
+        aiMaterial *pMatHelper, int textureId );
+    bool importLightmap( const Q3BSP::Q3BSPModel *pModel, aiScene* pScene, aiMaterial *pMatHelper, int lightmapId );
+    bool importEntities( const Q3BSP::Q3BSPModel *pModel, aiScene* pScene );
+    bool expandFile(ZipArchiveIOSystem *pArchive, const std::string &rFilename, const std::vector<std::string> &rExtList,
+        std::string &rFile, std::string &rExt );
+
+private:
+    aiMesh *m_pCurrentMesh;
+    aiFace *m_pCurrentFace;
+    FaceMap m_MaterialLookupMap;
+    std::vector<aiTexture*> mTextures;
+};
+
+// ------------------------------------------------------------------------------------------------
+
+} // Namespace Assimp
+
+#endif // ASSIMP_Q3BSPFILEIMPORTER_H_INC