Add unluac decompiler

Roco Kingdom: World lua support, Neverness to Everness ini decryption

CUE4Parse

@@ -1 +1 @@
-Subproject commit 3ea8a56be6e16012ebdeaab6e17f7b14049abda4
+Subproject commit 81458ae77d3f3230d7582a77ffd938510430a4bf

FModel/Enums.cs

@@ -164,3 +164,9 @@ public enum EAssetCategory : uint
         RocoKingdomWorld = GameSpecific + 3,
         DeltaForce = GameSpecific + 4,
 }
+
+public enum EUnluacMode
+{
+    Decompile,
+    Disassemble,
+}

FModel/MainWindow.xaml.cs

@@ -124,7 +124,8 @@ public partial class MainWindow
             {
                 if (UserSettings.Default.DiscordRpc == EDiscordRpc.Always)
                     _discordHandler.Initialize(_applicationView.GameDisplayName);
-            })
+            }),
+            UserSettings.Default.DecompileLua ? ApplicationViewModel.InitUnluac() : Task.CompletedTask
         ).ConfigureAwait(false);
 
 #if DEBUG

FModel/Settings/DirectorySettings.cs

@@ -25,7 +25,8 @@ public class DirectorySettings : ViewModel, ICloneable
             Directories = old?.Directories ?? CustomDirectory.Default(gameName),
             AesKeys = old?.AesKeys ?? new AesResponse { MainKey = aes, DynamicKeys = null },
             LastAesReload = old?.LastAesReload ?? DateTime.Today.AddDays(-1),
-            CriwareDecryptionKey = old?.CriwareDecryptionKey ?? 0
+            CriwareDecryptionKey = old?.CriwareDecryptionKey ?? 0,
+            UnluacOpCodeMap = old?.UnluacOpCodeMap ?? ""
         };
     }
 
@@ -106,6 +107,13 @@ public class DirectorySettings : ViewModel, ICloneable
         set => SetProperty(ref _criwareDecryptionKey, value);
     }
 
+    private string _unluacOpCodeMap;
+    public string UnluacOpCodeMap
+    {
+        get => _unluacOpCodeMap;
+        set => SetProperty(ref _unluacOpCodeMap, value);
+    }
+
     private bool Equals(DirectorySettings other)
     {
         return GameDirectory == other.GameDirectory && UeVersion == other.UeVersion;

FModel/Settings/UserSettings.cs

@@ -11,6 +11,7 @@ using CUE4Parse_Conversion.Animations;
 using CUE4Parse_Conversion.Meshes;
 using CUE4Parse_Conversion.Textures;
 using CUE4Parse_Conversion.UEFormat.Enums;
+using CUE4Parse.UE4.Lua.unluac;
 using FModel.Framework;
 using FModel.ViewModels;
 using FModel.ViewModels.ApiEndpoints.Models;
@@ -280,6 +281,36 @@ namespace FModel.Settings
             set => SetProperty(ref _convertAudioOnBulkExport, value);
         }
 
+        private bool _decompileLua;
+        public bool DecompileLua
+        {
+            get => _decompileLua;
+            set => SetProperty(ref _decompileLua, value);
+        }
+
+        [JsonIgnore]
+        public EUnluacMode UnluacMode
+        {
+            get => UnluacFlags.HasFlag(EUnluacFlags.Disassemble) ? EUnluacMode.Disassemble : EUnluacMode.Decompile;
+            set
+            {
+                var withoutMode = UnluacFlags & ~(EUnluacFlags.Decompile | EUnluacFlags.Disassemble);
+                var modeFlag = value == EUnluacMode.Disassemble ? EUnluacFlags.Disassemble : EUnluacFlags.Decompile;
+                UnluacFlags = withoutMode | modeFlag;
+            }
+        }
+
+        private EUnluacFlags _unluacFlags;
+        public EUnluacFlags UnluacFlags
+        {
+            get => _unluacFlags;
+            set
+            {
+                if (!SetProperty(ref _unluacFlags, value)) return;
+                RaisePropertyChanged(nameof(UnluacMode));
+            }
+        }
+
         private IDictionary<string, DirectorySettings> _perDirectory = new Dictionary<string, DirectorySettings>();
         public IDictionary<string, DirectorySettings> PerDirectory
         {

FModel/ViewModels/ApplicationViewModel.cs

@@ -9,6 +9,7 @@ using System.Windows;
 using CUE4Parse_Conversion.Textures.BC;
 using CUE4Parse.Compression;
 using CUE4Parse.Encryption.Aes;
+using CUE4Parse.UE4.Lua.unluac;
 using CUE4Parse.UE4.Objects.Core.Misc;
 using CUE4Parse.UE4.VirtualFileSystem;
 using FModel.Extensions;
@@ -340,4 +341,12 @@ public class ApplicationViewModel : ViewModel
 
         DetexHelper.Initialize(detexPath);
     }
+
+    public static async Task InitUnluac()
+    {
+        var unluacPath = Path.Combine(UserSettings.Default.OutputDirectory, ".data", UnluacHelper.DllName);
+        await UnluacHelper.InitializeAsync(unluacPath).ConfigureAwait(false);
+        if (UnluacHelper.Instance is null)
+            FLogger.Append(ELog.Error, () => FLogger.Text("Failed to download unluac", Constants.WHITE, true));
+    }
 }

FModel/ViewModels/AudioPlayerViewModel.cs

@@ -512,7 +512,7 @@ public class AudioPlayerViewModel : ViewModel, ISource, IDisposable
 
         if (Spectrum != null && PlayedFile.PlaybackState == PlaybackState.Playing)
         {
-            FftData = new float[4096];
+            FftData = new float[4096+4];
             Spectrum.GetFftData(FftData);
             RaiseSourcePropertyChangedEvent(ESourceProperty.FftData, FftData);
         }

FModel/ViewModels/CUE4ParseViewModel.cs

@@ -43,12 +43,14 @@ using CUE4Parse.UE4.Assets.Exports.StaticMesh;
 using CUE4Parse.UE4.Assets.Exports.Texture;
 using CUE4Parse.UE4.Assets.Exports.Verse;
 using CUE4Parse.UE4.Assets.Exports.Wwise;
+using CUE4Parse.UE4.Assets.Objects;
 using CUE4Parse.UE4.BinaryConfig;
 using CUE4Parse.UE4.CriWare;
 using CUE4Parse.UE4.CriWare.Readers;
 using CUE4Parse.UE4.FMod;
 using CUE4Parse.UE4.IO;
 using CUE4Parse.UE4.Localization;
+using CUE4Parse.UE4.Lua.unluac;
 using CUE4Parse.UE4.Objects.Core.Serialization;
 using CUE4Parse.UE4.Objects.Engine;
 using CUE4Parse.UE4.Objects.UObject;
@@ -698,6 +700,18 @@ public class CUE4ParseViewModel : ViewModel
                 ProcessCacheDBFile(entry, updateUi, saveProperties);
                 break;
             }
+            case "luac":
+            case "lua":
+            {
+                var data = Provider.SaveAsset(entry);
+                byte[] decompiled = ProcessLuaFile(data);
+
+                using var stream = new MemoryStream(decompiled);
+                using var reader = new StreamReader(stream);
+                TabControl.SelectedTab.SetDocumentText(reader.ReadToEnd(), saveProperties, updateUi);
+
+                break;
+            }
             case "upluginmanifest":
             case "code-workspace":
             case "projectstore":
@@ -749,7 +763,6 @@ public class CUE4ParseViewModel : ViewModel
             case "apx":
             case "udn":
             case "doc":
-            case "lua":
             case "vdf":
             case "yml":
             case "js":
@@ -843,7 +856,7 @@ public class CUE4ParseViewModel : ViewModel
             case "pck":
             {
                 var archive = entry.CreateReader();
-                var wwise = new WwiseReader(archive, new WwiseGameFileSource(entry));
+                var wwise = new WwiseReader(new FWwiseArchive(archive), new WwiseGameFileSource(entry));
                 TabControl.SelectedTab.SetDocumentText(JsonConvert.SerializeObject(wwise, Formatting.Indented), saveProperties, updateUi);
 
                 var medias = WwiseProvider.ExtractBankSounds(wwise);
@@ -982,7 +995,6 @@ public class CUE4ParseViewModel : ViewModel
                 break;
             }
             case "res": // just skip
-            case "luac": // compiled lua
             case "bytes": // wuthering waves
                 break;
             default:
@@ -1088,6 +1100,53 @@ public class CUE4ParseViewModel : ViewModel
         }
     }
 
+    private byte[] ProcessLuaFile(byte[] data)
+    {
+        var result = EUnluacErrorCode.Ok;
+        byte[] output = [];
+        if (BitConverter.ToUInt32(data) == UnluacHelper.LuaMagic && UnluacHelper.Instance is not null)
+        {
+            // opcodemap patch
+            byte[] opmapData = Provider.Versions.Game switch
+            {
+                _ => [],
+            };
+
+            var flags = UserSettings.Default.UnluacFlags;
+            var opcodemap = UserSettings.Default.CurrentDir.UnluacOpCodeMap;
+            if (!string.IsNullOrWhiteSpace(opcodemap))
+            {
+                opmapData = Encoding.UTF8.GetBytes(opcodemap);
+                flags |= EUnluacFlags.OpCodeMap;
+            }
+            else if (opmapData is { Length: > 12 })
+            {
+                flags |= EUnluacFlags.OpCodeMapPatch;
+            }
+
+            result = UnluacHelper.Decompile(data, opmapData, (uint)flags, out output, out var log);
+            if (result != EUnluacErrorCode.Ok && log.Length > 0)
+            {
+                Log.Error(Encoding.UTF8.GetString(log));
+            }
+        }
+        else
+        {
+            result = EUnluacErrorCode.Error;
+        }
+
+        var decompiled = result switch
+        {
+            EUnluacErrorCode.Ok => output,
+#if DEBUG
+            EUnluacErrorCode.PartialDecompile => output,
+#endif
+            _ => data,
+        };
+
+        return decompiled;
+    }
+
     public void ExtractAndScroll(CancellationToken cancellationToken, string fullPath, string objectName, string parentExportType)
     {
         Log.Information("User CTRL-CLICKED to extract '{FullPath}'", fullPath);

FModel/ViewModels/SettingsViewModel.cs

@@ -172,6 +172,13 @@ public class SettingsViewModel : ViewModel
         set => SetProperty(ref _criwareDecryptionKey, value);
     }
 
+    private string _unluacOpcodeMap;
+    public string UnluacOpcodeMap
+    {
+        get => _unluacOpcodeMap;
+        set => SetProperty(ref _unluacOpcodeMap, value);
+    }
+
     public bool SocketSettingsEnabled => SelectedMeshExportFormat == EMeshFormat.ActorX;
     public bool CompressionSettingsEnabled => SelectedMeshExportFormat == EMeshFormat.UEFormat;
 
@@ -237,6 +244,7 @@ public class SettingsViewModel : ViewModel
         _optionsSnapshot = UserSettings.Default.CurrentDir.Versioning.Options;
         _mapStructTypesSnapshot = UserSettings.Default.CurrentDir.Versioning.MapStructTypes;
         _criwareDecryptionKey = UserSettings.Default.CurrentDir.CriwareDecryptionKey;
+        _unluacOpcodeMap = UserSettings.Default.CurrentDir.UnluacOpCodeMap;
 
         AesEndpoint = UserSettings.Default.CurrentDir.Endpoints[0];
         MappingEndpoint = UserSettings.Default.CurrentDir.Endpoints[1];
@@ -273,6 +281,7 @@ public class SettingsViewModel : ViewModel
         SelectedMaterialExportFormat = _materialExportFormatSnapshot;
         SelectedTextureExportFormat = _textureExportFormatSnapshot;
         CriwareDecryptionKey = _criwareDecryptionKey;
+        UnluacOpcodeMap = _unluacOpcodeMap;
         SelectedAesReload = UserSettings.Default.AesReload;
         SelectedDiscordRpc = UserSettings.Default.DiscordRpc;
 
@@ -314,6 +323,7 @@ public class SettingsViewModel : ViewModel
         UserSettings.Default.CurrentDir.Versioning.Options = SelectedOptions;
         UserSettings.Default.CurrentDir.Versioning.MapStructTypes = SelectedMapStructTypes;
         UserSettings.Default.CurrentDir.CriwareDecryptionKey = CriwareDecryptionKey;
+        UserSettings.Default.CurrentDir.UnluacOpCodeMap = UnluacOpcodeMap;
 
         UserSettings.Default.AssetLanguage = SelectedAssetLanguage;
         UserSettings.Default.CompressedAudioMode = SelectedCompressedAudio;

FModel/Views/Resources/Converters/EnumFlagToBoolConverter.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace FModel.Views.Resources.Converters;
+
+public sealed class EnumFlagToBoolConverter : IValueConverter
+{
+    public static readonly EnumFlagToBoolConverter Instance = new();
+
+    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        if (value is null || parameter is null) return false;
+
+        var enumType = value.GetType();
+        if (!enumType.IsEnum) return false;
+
+        var flag = parameter is string s
+            ? Enum.Parse(enumType, s, ignoreCase: true)
+            : parameter;
+
+        var current = System.Convert.ToInt64(value);
+        var wanted  = System.Convert.ToInt64(flag);
+
+        return (current & wanted) == wanted;
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        throw new NotImplementedException();
+    }
+}

FModel/Views/SettingsView.xaml

@@ -44,6 +44,7 @@
                         <RowDefinition Height="Auto" />
                         <RowDefinition Height="Auto" />
                         <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
                     </Grid.RowDefinitions>
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="Auto" />
@@ -237,26 +238,32 @@
                               IsChecked="{Binding ShowDecompileOption, Source={x:Static local:Settings.UserSettings.Default}, Mode=TwoWay}" Margin="0 5 0 10"
                               Style="{DynamicResource {x:Static adonisUi:Styles.ToggleSwitch}}" />
 
-                    <TextBlock Grid.Row="19"
+                    <TextBlock Grid.Row="19" Grid.Column="0" Text="Decompile Lua" VerticalAlignment="Center" Margin="0 0 0 5" ToolTip="Decompile/Disassemble compiled lua files with an unluac." />
+                    <CheckBox Grid.Row="19" Grid.Column="2" Content="{Binding IsChecked, RelativeSource={RelativeSource Self}, Converter={x:Static converters:BoolToToggleConverter.Instance}}"
+                              IsChecked="{Binding DecompileLua, Source={x:Static local:Settings.UserSettings.Default}, Mode=TwoWay}" Margin="0 5 0 10"
+                              Style="{DynamicResource {x:Static adonisUi:Styles.ToggleSwitch}}"
+                              Checked="OnDecompileLuaChanged" />
+
+                    <TextBlock Grid.Row="20"
                                Grid.Column="0"
                                Text="Convert Audio During Export (.wav)"
                                VerticalAlignment="Center"
                                Margin="0 0 0 5" />
-                    <CheckBox Grid.Row="19"
+                    <CheckBox Grid.Row="20"
                               Grid.Column="2"
                               Content="{Binding IsChecked, RelativeSource={RelativeSource Self}, Converter={x:Static converters:BoolToToggleConverter.Instance}}"
                               IsChecked="{Binding ConvertAudioOnBulkExport, Source={x:Static local:Settings.UserSettings.Default}, Mode=TwoWay}"
                               Margin="0 5 0 10"
                               Style="{DynamicResource {x:Static adonisUi:Styles.ToggleSwitch}}" />
 
-                    <TextBlock Grid.Row="20"
+                    <TextBlock Grid.Row="21"
                                Grid.Column="0"
                                Text="CRIWARE Decryption Key"
                                VerticalAlignment="Center"
                                Margin="0 0 0 10" />
 
                     <TextBox x:Name="CriwareKeyBox"
-                             Grid.Row="20"
+                             Grid.Row="21"
                              Grid.Column="2"
                              Grid.ColumnSpan="5"
                              Margin="0 5 0 10"
@@ -604,6 +611,98 @@
                                             HotKey="{Binding NextAudio, Source={x:Static local:Settings.UserSettings.Default}, Mode=TwoWay}" />
                 </Grid>
             </DataTemplate>
+            <DataTemplate x:Key="unluacTemplate">
+                <Grid adonisExtensions:LayerExtension.Layer="2">
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                    </Grid.RowDefinitions>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="Auto" />
+                        <ColumnDefinition Width="10" />
+                        <ColumnDefinition Width="*" />
+                        <ColumnDefinition Width="5" />
+                        <ColumnDefinition Width="Auto" />
+                        <ColumnDefinition Width="10" />
+                        <ColumnDefinition Width="*" />
+                        <ColumnDefinition Width="5" />
+                        <ColumnDefinition Width="Auto" />
+                        <ColumnDefinition Width="10" />
+                        <ColumnDefinition Width="*" />
+                        <ColumnDefinition Width="5" />
+                    </Grid.ColumnDefinitions>
+
+                    <TextBlock Grid.Row="0" Grid.Column="0" Text="Mode" VerticalAlignment="Center" Margin="0 0 0 5" />
+                    <ComboBox Grid.Row="0" Grid.Column="2" Grid.ColumnSpan="10"
+                              SelectedValuePath="Tag"
+                              SelectedValue="{Binding UnluacMode, Source={x:Static local:Settings.UserSettings.Default}, Mode=TwoWay}"
+                              Margin="0 0 0 5">
+                        <ComboBoxItem Content="Decompile" Tag="{x:Static local:EUnluacMode.Decompile}" />
+                        <ComboBoxItem Content="Disassemble" Tag="{x:Static local:EUnluacMode.Disassemble}" />
+                    </ComboBox>
+
+                    <TextBlock Grid.Row="1" Grid.Column="0" Text="Raw string" VerticalAlignment="Center" Margin="0 0 0 5" />
+                    <CheckBox Tag="RawString"
+                        Grid.Row="1" Grid.Column="2" Grid.ColumnSpan="3"
+                        Content="{Binding IsChecked, RelativeSource={RelativeSource Self}, Converter={x:Static converters:BoolToToggleConverter.Instance}}"
+                        Style="{DynamicResource {x:Static adonisUi:Styles.ToggleSwitch}}" Margin="0 5 0 5"
+                        IsChecked="{Binding UnluacFlags, Source={x:Static local:Settings.UserSettings.Default},
+                            Converter={x:Static converters:EnumFlagToBoolConverter.Instance}, ConverterParameter=RawString, Mode=OneWay}"
+                        Checked="OnUnluacFlagChanged"
+                        Unchecked="OnUnluacFlagChanged"
+                        ToolTip="Copy string bytes directly to output">
+                    </CheckBox>
+
+                    <TextBlock Grid.Row="1" Grid.Column="4" Text="No debug" VerticalAlignment="Center" Margin="0 0 0 5" />
+                    <CheckBox Tag="NoDebug"
+                        Grid.Row="1" Grid.Column="6" Grid.ColumnSpan="3"
+                        Content="{Binding IsChecked, RelativeSource={RelativeSource Self}, Converter={x:Static converters:BoolToToggleConverter.Instance}}"
+                        Style="{DynamicResource {x:Static adonisUi:Styles.ToggleSwitch}}" Margin="0 5 0 5"
+                        IsChecked="{Binding UnluacFlags, Source={x:Static local:Settings.UserSettings.Default},
+                            Converter={x:Static converters:EnumFlagToBoolConverter.Instance}, ConverterParameter=NoDebug, Mode=OneWay}"
+                        Checked="OnUnluacFlagChanged"
+                        Unchecked="OnUnluacFlagChanged"
+                        ToolTip="Ignore debugging information in input file">
+                    </CheckBox>
+
+                    <TextBlock Grid.Row="1" Grid.Column="8" Text="Luaj" VerticalAlignment="Center" Margin="0 0 0 5" />
+                    <CheckBox Tag="Luaj"
+                        Grid.Row="1" Grid.Column="10" Grid.ColumnSpan="3"
+                        Content="{Binding IsChecked, RelativeSource={RelativeSource Self}, Converter={x:Static converters:BoolToToggleConverter.Instance}}"
+                        Style="{DynamicResource {x:Static adonisUi:Styles.ToggleSwitch}}" Margin="0 5 0 5"
+                        IsChecked="{Binding UnluacFlags, Source={x:Static local:Settings.UserSettings.Default},
+                            Converter={x:Static converters:EnumFlagToBoolConverter.Instance}, ConverterParameter=Luaj, Mode=OneWay}"
+                        Checked="OnUnluacFlagChanged"
+                        Unchecked="OnUnluacFlagChanged"
+                        ToolTip="Emulate Luaj's permissive parser">
+                    </CheckBox>
+
+                    <Separator Grid.Row="2" Grid.Column="0" Grid.ColumnSpan="11" Style="{StaticResource CustomSeparator}" />
+
+                    <TextBlock Grid.Row="3"
+                       Grid.Column="0"
+                       Text="OpcodeMap"
+                       VerticalAlignment="Top"
+                       Margin="0 0 0 5"/>
+                    <TextBox Grid.Row="3" Grid.Column="2" Grid.ColumnSpan="10"
+                         Margin="0 0 0 5" Height="300"
+                         FontSize="14" Padding="8"
+                         HorizontalAlignment="Stretch" VerticalAlignment="Top"
+                         VerticalContentAlignment="Top" TextAlignment="Left"
+                         DataContext="{Binding DataContext, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:Views.SettingsView}}}"
+                         Text="{Binding SettingsView.UnluacOpcodeMap, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                         AcceptsReturn="True"
+                         AcceptsTab="True"
+                         TextWrapping="NoWrap"
+                         VerticalScrollBarVisibility="Auto"
+                         HorizontalScrollBarVisibility="Auto"
+                         ToolTip="Paste a custom opcode map." />
+                </Grid>
+            </DataTemplate>
         </ResourceDictionary>
     </adonisControls:AdonisWindow.Resources>
     <Grid>
@@ -681,6 +780,28 @@
                     </StackPanel>
                 </TreeViewItem.Header>
             </TreeViewItem>
+            <TreeViewItem Tag="unluacTemplate">
+                <TreeViewItem.Header>
+                    <StackPanel Orientation="Horizontal">
+                        <Viewbox Width="16" Height="16" HorizontalAlignment="Center" Margin="-20 4 7.5 4">
+                            <Canvas Width="24" Height="24">
+                                <Path Fill="{DynamicResource {x:Static adonisUi:Brushes.AccentForegroundBrush}}" Data="{StaticResource LuaIcon}" />
+                            </Canvas>
+                        </Viewbox>
+                        <TextBlock Text="unluac" HorizontalAlignment="Left" VerticalAlignment="Center" />
+                    </StackPanel>
+                </TreeViewItem.Header>
+                <TreeViewItem.Style>
+                    <Style TargetType="TreeViewItem" BasedOn="{StaticResource TreeViewItemStyle}">
+                        <Setter Property="Visibility" Value="Collapsed"/>
+                        <Style.Triggers>
+                            <DataTrigger Binding="{Binding DecompileLua, Source={x:Static local:Settings.UserSettings.Default}}" Value="True">
+                                <Setter Property="Visibility" Value="Visible" />
+                            </DataTrigger>
+                        </Style.Triggers>
+                    </Style>
+                </TreeViewItem.Style>
+            </TreeViewItem>
         </TreeView>
 
         <Grid Grid.Row="0" Grid.Column="1" Margin="{adonisUi:Space 1, 0.5}" HorizontalAlignment="Stretch">

FModel/Views/SettingsView.xaml.cs

@@ -6,6 +6,7 @@ using System.Linq;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Documents;
+using CUE4Parse.UE4.Lua.unluac;
 using FModel.Services;
 using FModel.Settings;
 using FModel.ViewModels;
@@ -274,4 +275,21 @@ public partial class SettingsView
 
         Process.Start(new ProcessStartInfo(hyperlink.NavigateUri.AbsoluteUri) { UseShellExecute = true });
     }
+
+    private async void OnDecompileLuaChanged(object sender, RoutedEventArgs e)
+    {
+        if (sender is CheckBox { IsChecked: true } && UnluacHelper.Instance is null)
+            await ApplicationViewModel.InitUnluac();
+    }
+
+    private void OnUnluacFlagChanged(object sender, RoutedEventArgs e)
+    {
+        if (sender is not CheckBox cb || cb.Tag is not string name) return;
+        if (!Enum.TryParse<EUnluacFlags>(name, true, out var flag)) return;
+
+        var current = UserSettings.Default.UnluacFlags;
+        var isChecked = cb.IsChecked == true;
+
+        UserSettings.Default.UnluacFlags = isChecked ? (current | flag) : (current & ~flag);
+    }
 }