Alexandria.Engines.Sciagi.ResourceMap.ResourceMap C# (CSharp) Метод

        internal ResourceMap(AssetManager manager, AssetLoader loader)
            : base(manager, loader.Name)
        {
            var reader = loader.Reader;

            Path = loader.Name;
            FileManager = loader.FileManager;
            Version = DetectVersion(loader);

            Dictionary<ResourceType, FolderAsset> folders = new Dictionary<ResourceType, FolderAsset>();

            using (reader) {
                if (Version == ResourceMapVersion.Sci0) {
                    // Simple list of entries of type (short typeAndIndex, int offsetAndPage), terminated with a (-1, -1)
                    while (true) {
                        ResourceId id = new ResourceId(reader, Version);

                        if (id.IsEnd)
                            break;
                        AddResource(id, folders);
                    }
                } else if (Version == ResourceMapVersion.Sci1) {
                    List<KeyValuePair<ResourceType, int>> types = new List<KeyValuePair<ResourceType, int>>();

                    while (true) {
                        ResourceType type = (ResourceType)reader.ReadByte();
                        int offset = reader.ReadUInt16();

                        types.Add(new KeyValuePair<ResourceType, int>(type == ResourceType.End ? type : (ResourceType)((int)type & 0x7F), offset));
                        if (type == ResourceType.End)
                            break;
                    }

                    for (int typeIndex = 0; typeIndex < types.Count - 1; typeIndex++) {
                        ResourceType type = types[typeIndex].Key;
                        int end = types[typeIndex + 1].Value;

                        while (reader.BaseStream.Position < end) {
                            ResourceId id = new ResourceId(reader, Version, type);
                            AddResource(id, folders);
                        }
                    }
                } else if(Version == ResourceMapVersion.Sci2) {
                    List<KeyValuePair<ResourceType, int>> types = new List<KeyValuePair<ResourceType, int>>();

                    while (true) {
                        ResourceType type = (ResourceType)reader.ReadByte();
                        int offset = reader.ReadUInt16();

                        types.Add(new KeyValuePair<ResourceType, int>(type, offset));
                        if (type == ResourceType.End)
                            break;
                    }

                    Unknowns.ReadInt32s(reader, 1, "Post offsets");

                    for (int typeIndex = 0; typeIndex < types.Count - 1; typeIndex++) {
                        ResourceType type = types[typeIndex].Key;
                        int offset = types[typeIndex].Value;
                        int end = types[typeIndex + 1].Value;

                        if ((end - offset) % 6 != 0)
                            throw new InvalidDataException();
                        int count = (end - offset) / 6;
                        for (int index = 0; index < count; index++) {
                            ResourceId id = new ResourceId(reader, Version, type);
                            AddResource(id, folders);
                        }
                    }
                } else
                    throw new NotImplementedException();
            }

            SortChildrenRecursively();
        }