WIP: LabOpt

LabOptPreloader/LabOptPreloader.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using BepInEx.Logging;
+using HarmonyLib;
+using Mono.Cecil;
+using Mono.Cecil.Cil;
+using Mono.Cecil.Rocks;
+using MonoMod.Utils;
+
+namespace LabOptPreloader;
+
+public static class Preloader
+{
+    private static readonly ManualLogSource Logger = BepInEx.Logging.Logger.CreateLogSource("ModFixerOne Preloader");      
+    public static IEnumerable<string> TargetDLLs { get; } = new[] { "Assembly-CSharp.dll" };
+
+    public static void Patch(AssemblyDefinition assembly)
+    {
+        AddMemebers(assembly);
+    }
+
+    private static void AddMemebers(AssemblyDefinition assembly)
+    {
+        try
+        {
+            var gameModule = assembly.MainModule;
+            // Add field: int LabComponent.rootLabId;
+            gameModule.GetType("LabComponent").AddFied("rootLabId", gameModule.TypeSystem.Int32);
+        }
+        catch (Exception e)
+        {
+            Logger.LogError("Failed to add `int LabComponent.rootLabId`!");
+            Logger.LogError(e);
+        }
+    }
+
+    private static void AddFied(this TypeDefinition typeDefinition, string fieldName, TypeReference fieldType)
+    {
+        var newField = new FieldDefinition(fieldName, FieldAttributes.Public, fieldType);
+        typeDefinition.Fields.Add(newField);
+        Logger.LogDebug("Add " + newField);
+    }
+}