public void LoadObjectPrefab()

in IndoorSceneSynthesis/ConstraintStochasticIndoorSceneGeneration/Custom/Visualization/CSunCGVisualizer.cs [37:168]
89 lines of code
11 McCabe index (conditional complexity)

    public void LoadObjectPrefab(bool loadCommonObject = true, bool canDuplicate = false)
    {
        //load pool
        Debug.Log("LoadFurniturePrefab");
        CFurniturePool objPool = furniturePool;
        objPool.furnitureList.Clear();

        List<string> prefabPathList = new List<string>();
        List<SimObjType> nonDuplicatedObjTypeList = new List<SimObjType>();

        void LoadPrefabPaths(string dirPath)
        {
            //DirectoryInfo dir = new DirectoryInfo(dirPath);
            string[] fileInfoList = Directory.GetDirectories(dirPath);
            foreach (string file in fileInfoList)
            {
                string prefabDirPath = file.ToString() + "/Prefabs";
                DirectoryInfo prefabDir = new DirectoryInfo(prefabDirPath);
                try
                {
                    FileInfo[] prefabInfoList = prefabDir.GetFiles("*.prefab");
                    foreach (FileInfo prefabFile in prefabInfoList)
                    {
                        int prefabRelativepathStart = prefabFile.ToString().IndexOf(dirPath);
                        string prefabPath = prefabFile.ToString().Substring(prefabRelativepathStart);
                        Debug.Log("LoadFurniturePrefab: " + prefabPath);

                        prefabPathList.Add(prefabPath);
                    }
                }
                catch
                {
                    Debug.LogWarning("the prefab path is wrong: " + prefabDirPath);
                }
            }
        }


        string dirPath1 = "Assets/Physics/SimObjsPhysics/Living Room Objects";
        LoadPrefabPaths(dirPath1);

        string dirPath2 = "Assets/Physics/SimObjsPhysics/Living Room and Bedroom Objects";
        LoadPrefabPaths(dirPath2);

        string dirPath3 = "Assets/Physics/SimObjsPhysics/Bedroom Objects";
        LoadPrefabPaths(dirPath3);

        string dirPath4 = "Assets/Physics/SimObjsPhysics/Kitchen Objects";
        LoadPrefabPaths(dirPath4);

        //addtional prefabs
        string dirPath_ad = "Assets/Custom/Visualization/Prefabs";
        DirectoryInfo additionalPrefabDir = new DirectoryInfo(dirPath_ad);
        FileInfo[] ad_prefabInfoList = additionalPrefabDir.GetFiles("*.prefab");
        foreach (FileInfo prefabFile in ad_prefabInfoList)
        {
            int ad_prefabRelativepathStart = prefabFile.ToString().IndexOf(dirPath_ad);
            string ad_prefabPath = prefabFile.ToString().Substring(ad_prefabRelativepathStart);
            Debug.Log("LoadFurniturePrefab: " + ad_prefabPath);

            prefabPathList.Add(ad_prefabPath);
        }
        
        //LoadPrefabPaths(dirPath_ad);

        if (loadCommonObject)
        {
            string dirPath5 = "Assets/Physics/SimObjsPhysics/Common Objects";
            LoadPrefabPaths(dirPath5);

            //string dirPath2 = "Assets/Physics/SimObjsPhysics/Custom Project Objects";
            //LoadPrefabPaths(dirPath2);

            string dirPath6 = "Assets/Physics/SimObjsPhysics/Miscellaneous Objects";
            LoadPrefabPaths(dirPath6);
        }

        //shuffle list
        System.Random rng = new System.Random(objPool.randomSeed++);
        prefabPathList.Shuffle_(rng);

        //put prefab into furniture pool

        foreach (string prefabPath in prefabPathList)
        {
            GameObject objPrefab = (GameObject)AssetDatabase.LoadAssetAtPath(prefabPath, typeof(GameObject));

            if (!canDuplicate)
            {
                //string[] pathParts = prefabPath.Split('/');
                //string prefabName = pathParts[pathParts.Length - 1].Split('.')[0].Split('_')[0];
                //Debug.Log("prefab name " + " " + prefabPath + " " + prefabName);
                //GameObject objPrefabGo = Instantiate(objPrefab);
                SimObjPhysics sop = objPrefab.GetComponent<SimObjPhysics>();
                StructureObject sto = objPrefab.GetComponent<StructureObject>();


                if (sop != null)
                {
                    //not a good object, continue
                    //Debug.Log("loading prefab from path: " + prefabPath + " --- " + objPrefab.name);
                    if (nonDuplicatedObjTypeList.Contains(sop.ObjType))
                    {
                        continue;
                    }
                    else
                    {
                        nonDuplicatedObjTypeList.Add(sop.ObjType);
                        objPool.furnitureList.Add(objPrefab);

                    }
                }
                else if (sto != null)
                {
                    objPool.furnitureList.Add(objPrefab);
                }


            }
            else
            {
                objPool.furnitureList.Add(objPrefab);
            }
        }

        objPool.furnitureList.Sort((x, y) => string.Compare(x.name, y.name));

        //DirectoryInfo dir = new DirectoryInfo("Assets/Physics/SimObjsPhysics");
        //FileInfo[] fileInfo = dir.GetFiles();
        //foreach (var file in fileInfo)
        //    Debug.Log(file);
    }