Fix LuaCs initializing too late for singleplayer campaigns and rework the C# prompt to only show when enabling mods/joining server

Barotrauma/BarotraumaShared/SharedSource/LuaCs/LuaCsSetup.cs

@@ -85,20 +85,31 @@ namespace Barotrauma
         public LuaGame Game => _game ??= _servicesProvider.GetService<LuaGame>();
         public Script Lua => LuaScriptManagementService.InternalScript;
 
+        private ISettingBase<bool> _isCsEnabledForSession;
+        public bool IsCsEnabledForSession
+        {
+            get => _isCsEnabledForSession?.Value ?? false;
+            internal set
+            {
+                _isCsEnabledForSession?.TrySetValue(value);
+                ConfigService.SaveConfigValue(_isCsEnabledForSession);
+            }
+        }
+
         /// <summary>
         /// Whether C# plugin code is enabled.
         /// </summary>
         public bool IsCsEnabled
         {
 #if CLIENT
-            get => _csRunPolicy?.Value == "Enabled" || _isCsEnabledForSession;
+            get => _csRunPolicy?.Value == "Enabled" || IsCsEnabledForSession;
 #elif SERVER
             // cs settings cannot be changed on the server after launch
             get => _csRunPolicy?.Value is "Enabled" or "Prompt";
 #endif
         }
+
         private ISettingList<string> _csRunPolicy;
-        private bool ShouldPromptForCs => _csRunPolicy?.Value is "Prompt";
         
         /// <summary>
         /// Whether usernames are anonymized or show in logs. 
@@ -139,6 +150,10 @@ namespace Barotrauma
                 ConfigService.TryGetConfig<ISettingBase<bool>>(luaCsPackage, "UseCaching", out var val5)
                     ? val5
                     : null;
+            _isCsEnabledForSession =
+                ConfigService.TryGetConfig<ISettingBase<bool>>(luaCsPackage, "IsCsEnabledForSession", out var val6)
+                    ? val6
+                    : null;
 
             if (!ContentPackageManager.EnabledPackages.All.Contains(luaCsPackage))
             {
@@ -237,14 +252,8 @@ namespace Barotrauma
 
             CoroutineManager.Invoke(() =>
             {
-#if CLIENT
-                bool prevCsEnabled = _isCsEnabledForSession;
-#endif
                 var state = CurrentRunState;
                 SetRunState(RunState.Unloaded);
-#if CLIENT
-                _isCsEnabledForSession = prevCsEnabled;
-#endif
                 SetRunState(state);
             });
         }
@@ -266,7 +275,7 @@ namespace Barotrauma
             SetRunState(state); // restore
         }
         
-        private void SetRunState(RunState targetRunState)
+        public void SetRunState(RunState targetRunState)
         {
             if (CurrentRunState == targetRunState)
             {
@@ -393,9 +402,6 @@ namespace Barotrauma
             void RunStateRunning_OnExit(State<RunState> currentState)
             {
                 EventService.Call("stop");
-#if CLIENT
-                _isCsEnabledForSession = false;
-#endif
                 Logger.LogResults(PackageManagementService.StopRunningPackages());
                 Logger.LogMessage("LuaCs running state exited");
             }

Barotrauma/BarotraumaShared/SharedSource/LuaCs/_Services/HarmonyEventPatchesService.cs

@@ -2,6 +2,7 @@
 using Barotrauma.LuaCs;
 using Barotrauma.LuaCs.Events;
 using Barotrauma.Networking;
+using Barotrauma.Steam;
 using HarmonyLib;
 using Microsoft.Xna.Framework;
 using System;
@@ -95,6 +96,27 @@ internal class HarmonyEventPatchesService : ISystem
         _eventService.PublishEvent<IEventScreenSelected>(x => x.OnScreenSelected(__instance));
     }
 
+#if CLIENT
+    [HarmonyPatch(typeof(MainMenuScreen), "StartGame"), HarmonyPostfix]
+    public static void MainMenuScreen_StartGame_Pre(Screen __instance)
+    {
+        LuaCsSetup.Instance.SetRunState(RunState.Running);
+    }
+
+    [HarmonyPatch(typeof(MainMenuScreen), "LoadGame"), HarmonyPostfix]
+    public static void MainMenuScreen_LoadGame_Pre(Screen __instance)
+    {
+        LuaCsSetup.Instance.SetRunState(RunState.Running);
+    }
+
+    [HarmonyPatch(typeof(MutableWorkshopMenu), nameof(MutableWorkshopMenu.Apply)), HarmonyPostfix]
+    public static void MutableWorkshopMenu_Apply_Post(Screen __instance)
+    {
+        LuaCsSetup.Instance.PromptCSharpMods(selection => { }, joiningServer: false);
+    }
+
+#endif
+
     [HarmonyPatch(typeof(ContentPackageManager.PackageSource), nameof(ContentPackageManager.PackageSource.Refresh)), HarmonyPostfix]
     public static void PackageSource_Refresh_Post()
     {