Updated GUI Window to have checkboxes

Renamed Utils to ModLoader
Changed static class to static instance
Moved logging to class and added file logging
Added more protection for modloader properties
Fixed RefreshModFiles now unloads mods before clearing
Fixed trying to load abstract classes and using IsAssignableFrom
Various small improvements

.gitignore

@@ -34,3 +34,5 @@ sysinfo.txt
 # Builds
 *.apk
 *.unitypackage
+
+bin/

BWModLoader.csproj

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -7,7 +7,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>BWModLoader</RootNamespace>
     <AssemblyName>BWModLoader</AssemblyName>
-    <TargetFrameworkVersion>v4.7</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -35,13 +35,13 @@
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="src\Loader.cs" />
+    <Compile Include="src\ModLogger.cs" />
     <Compile Include="src\ModGUI.cs" />
+    <Compile Include="src\ModLoader.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
-  <ItemGroup>
-    <Folder Include="src\" />
-  </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
 </Project>

src/Loader.cs

@@ -1,73 +1,49 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Reflection;
 using UnityEngine;
-namespace ModLoader
+
+namespace BWModLoader
 {
     public static class Loader
     {
-        public static void Log(string output)
-        {
-            Console.WriteLine("[BWML]" + output);
-            //UnityEngine.Debug.Log("[BWML]" + output);
-        }
         public static void Load()
         {
-            Log("Starting mod loader...");
+            string logfile = null;
+#if DEBUG
+            logfile = ModLoader.LogPath + "\\modloader.log";
+#endif
+            ModLogger logger = new ModLogger("[BWML]", logfile);
+            logger.ClearLog();
+            logger.Log("Starting mod loader...");
+            logger.DebugLog("Mods dir: " + ModLoader.ModsPath);
 
-            string dllpath = new System.Uri(System.Reflection.Assembly.GetExecutingAssembly().CodeBase).LocalPath;
-            string Path = new FileInfo(dllpath).Directory.FullName;
-            string modsPath = Path + "\\Mods";
-            string assetsPath = modsPath + "\\Assets";
-
-            Log("Dll dir: "+Path);
-            Log("Mods dir: "+modsPath);
-
-            if (!Directory.Exists(modsPath))
+            if (!Directory.Exists(ModLoader.ModsPath))
             {
-                Directory.CreateDirectory(modsPath);
+                Directory.CreateDirectory(ModLoader.ModsPath);
             }
 
-            if (!Directory.Exists(assetsPath))
+            if (!Directory.Exists(ModLoader.AssetsPath))
             {
-                Directory.CreateDirectory(assetsPath);
+                Directory.CreateDirectory(ModLoader.AssetsPath);
             }
 
-            DirectoryInfo d = new DirectoryInfo(modsPath);
-
-            GameObject modObjects = new GameObject();
-
             //For each DLL in "Blackwake/Blackwake_Data/Managed/Mods/"
             //Open them, Get the mod class, then add it in the game.
-            foreach (var file in d.GetFiles("*.dll"))
+            ModLoader loader = new ModLoader(logger);
+            ModLoader.Instance = loader;
+            loader.RefreshModFiles();
+            foreach (FileInfo file in loader.GetAllMods().Keys)
             {
-                try
-                {
-                    Assembly modDll = Assembly.LoadFrom(modsPath + "/" + file.Name);
-                    Type[] modType = modDll.GetTypes();
-                    foreach (Type t in modType)
-                    {
-                        Log("Found type in " + file.Name + ": " + t.Name);
-                        if (t.IsClass && t.IsSubclassOf(typeof(MonoBehaviour)))
-                        {
-                            modObjects.AddComponent(t);
-                            Log("Loaded '" + t.Name + "' in " + file.Name);
-                        }
-                    }
-                }
-                catch (Exception e)
-                {
-                    Log("Exception raised while loading mod " + file.Name);
-                    Log(e.Message);
-                    Log("Skipped loading this mod");
-                }
+                loader.Load(file);
             }
-            Log("All Mods have been Loaded!");
-            modObjects.AddComponent<ModGUI.ModGUI>();
-            Log("GUI has been loaded");
+            logger.Log("All Mods have been Loaded!");
+            loader.ModObjects.AddComponent<ModGUI.ModGUI>();
+            logger.Log("GUI has been loaded");
 
             //Keep mods active
-            UnityEngine.Object.DontDestroyOnLoad(modObjects);
+            UnityEngine.Object.DontDestroyOnLoad(loader.ModObjects);
         }
     }
 }

src/ModGUI.cs

@@ -1,14 +1,143 @@
 using System;
+using System.Collections;
+using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using UnityEngine;
-namespace ModGUI
+namespace BWModLoader.ModGUI
 {
+    public enum ScreenType
+    {
+        MOD,
+        LOG
+    }
+
+    /// <summary>
+    /// Manages contents and behaviour of the Debug Window
+    /// </summary>
     public class ModGUI : MonoBehaviour
     {
+        static bool debugEnabled;
+        static int currentScreen;
+        static Vector2 scrollPosition;
+        static Vector2 size;
+        static Vector2 position;
+
+        void Start()
+        {
+            currentScreen = (int)ScreenType.MOD;
+            scrollPosition = Vector2.zero;
+            debugEnabled = false;
+            size = new Vector2(1000, 1000);
+            position = new Vector2((Screen.width / 2) - (size.x / 2),
+                                   (Screen.height / 2) - (size.x / 2));
+        }
+
+        /// <summary>
+        /// Toggles the Window when the Hotkey is pressed
+        /// </summary>
+        void Update()
+        {
+            if (Input.GetKeyUp("insert"))
+            {
+                debugEnabled = !debugEnabled;
+            }
+
+        }
+
+        /// <summary>
+        /// Code that executes if the window was opened
+        /// </summary>
         void OnGUI()
         {
-            GUI.color = Color.red;
-            GUI.Label(new Rect(5f, 0f, 200f, 20f), "ModLoader v0.3");
+            if (debugEnabled)
+            {
+                GUI.ModalWindow(0, new Rect(position, size), DebugWindow, "[BWML]Debug Menu");
+            }
+        }
+
+        /// <summary>
+        /// Manages contents of the window
+        /// </summary>
+        /// <param name="windowID">ID of the Debug Window</param>
+        void DebugWindow(int windowID)
+        {
+            GUI.DragWindow(new Rect(0, 0, 10000, 20));
+            currentScreen = GUI.SelectionGrid(new Rect(25, 25, size.x - 50, 75), currentScreen,
+                                              new string[] { "Mods", "Logs" }, 2);
+            if (currentScreen == (int)ScreenType.MOD)
+            {
+                ModWindow();
+            }
+            else
+            {
+                LogWindow();
+            }
+        }
+
+        /// <summary>
+        /// Logging window content
+        /// </summary>
+        void LogWindow()
+        {
+            GUI.Label(new Rect(0, 100, 100, 25), "LogWindow");
+            int logNum = 0;
+            if (ModLoader.Instance.Logger.Logs.Any())
+            {
+                scrollPosition = GUI.BeginScrollView(new Rect(0, 100, size.x, size.y - 100), scrollPosition, new Rect(0, 0, size.x, 50));
+                foreach (string log in ModLoader.Instance.Logger.Logs)
+                {
+                    logNum++;
+                    GUI.Label(new Rect(0, 25 * logNum, 1000, 25), log);
+                }
+                GUI.EndScrollView();
+            }
+        }
+
+        /// <summary>
+        /// Mod window content
+        /// </summary>
+        void ModWindow()
+        {
+            if (GUI.Button(new Rect(0, 100, 100, 25), "Reload all mods"))
+            {
+                ModLoader.Instance.RefreshModFiles();
+            }
+
+            scrollPosition = GUI.BeginScrollView(new Rect(0, 100, size.x, size.y - 100), scrollPosition, new Rect(0, 0, size.x, 50));
+            int modNum = 0;
+            var allmods = ModLoader.Instance.GetAllMods();
+            foreach (FileInfo file in allmods.Keys)
+            {
+                foreach (Type mod in allmods[file])
+                {
+                    modNum++;
+                    //GUI.Label(new Rect(0, modNum * 25, 100, 25), mod.Name);
+                    //GUI.Toggle(new Rect(0, modNum * 25, 100, 25), ModLoader.Instance.IsLoaded(mod), mod.Name);
+                    bool newCheckboxStatus = GUI.Toggle(new Rect(20, modNum * 25, 100, 25), ModLoader.Instance.IsLoaded(mod), mod.Name);
+                    if (newCheckboxStatus)
+                    {
+                        if (!ModLoader.Instance.IsLoaded(mod))
+                        {
+                            ModLoader.Instance.Load(file);
+                        }
+                    }
+                    else
+                    {
+                        if (ModLoader.Instance.IsLoaded(mod))
+                        {
+                            ModLoader.Instance.Unload(file);
+                        }
+                    }
+
+                    // Reload the respective Mod
+                    if (GUI.Button(new Rect(200, modNum * 25, 100, 25), "Reload"))
+                    {
+                        ModLoader.Instance.RefreshModFiles();
+                    }
+                }
+            }
+            GUI.EndScrollView();
         }
     }
 }

src/ModLoader.cs

@@ -0,0 +1,141 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Reflection;
+using UnityEngine;
+
+namespace BWModLoader
+{
+    public class ModLoader
+    {
+        public static ModLoader Instance { get; internal set; }
+
+        private static readonly string dllpath = new Uri(Assembly.GetExecutingAssembly().CodeBase).LocalPath;
+        private static readonly string folderPath = Path.GetDirectoryName(dllpath);
+        public static string ModsPath => folderPath + "\\Mods";
+        public static string AssetsPath => ModsPath + "\\Assets";
+        public static string LogPath => ModsPath + "\\Logs";
+
+        public ModLogger Logger;
+
+        /// <summary>
+        /// All known mods files
+        /// </summary>
+        private readonly Dictionary<FileInfo, List<Type>> allMods = new Dictionary<FileInfo, List<Type>>();
+
+        /// <summary>
+        /// Gets all known mods files
+        /// </summary>
+        /// Prevent modification from outside by making copy
+        public Dictionary<FileInfo, List<Type>> GetAllMods() => new Dictionary<FileInfo, List<Type>>(allMods);
+
+        /// <summary>
+        /// GameObject that holds our mods
+        /// </summary>
+        public GameObject ModObjects { get; } = new GameObject();
+
+        public ModLoader(ModLogger logger)
+        {
+            this.Logger = logger;
+        }
+
+        /// <summary>
+        /// Checks if a mod is loaded
+        /// </summary>
+        /// <param name="mod"></param>
+        /// <returns></returns>
+        public bool IsLoaded(Type mod)
+        {
+            return ModObjects.GetComponent(mod) != null;
+        }
+
+        /// <summary>
+        /// Refresh all known mods
+        /// </summary>
+        public void RefreshModFiles()
+        {
+            DirectoryInfo dir = new DirectoryInfo(ModsPath);
+            //Unloads & clears known mods
+            foreach (var mod in allMods)
+            {
+                Unload(mod.Key);
+            }
+            allMods.Clear();
+
+            //Find all files to refresh
+            foreach (FileInfo file in dir.GetFiles("*.dll"))
+            {
+                //Save mod types and file path
+                allMods.Add(file, LoadModTypes(file));
+                Logger.Log("Found dll: " + file.Name);
+            }
+        }
+
+        /// <summary>
+        /// Finds and loads all mod classes in a file
+        /// </summary>
+        /// <param name="file">The file to load</param>
+        /// <returns></returns>
+        private List<Type> LoadModTypes(FileInfo file)
+        {
+            List<Type> mods = new List<Type>();
+            try
+            {
+                Assembly modDll = Assembly.LoadFrom(file.FullName);
+                Type[] modType = modDll.GetTypes();
+                foreach (Type t in modType)
+                {
+                    Logger.Log("Found type in " + file.Name + ": " + t.Name);
+                    if (t.IsClass && typeof(MonoBehaviour).IsAssignableFrom(t) && !t.IsAbstract && t.IsPublic)
+                    {
+                        mods.Add(t);
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                Logger.Log("Exception raised while loading mod " + file.Name);
+                Logger.Log(e.Message);
+                Logger.Log("Skipped loading this mod");
+            }
+            return mods;
+        }
+
+        /// <summary>
+        /// will load a mod from memory
+        /// </summary>
+        /// <param name="file"></param>
+        public void Load(FileInfo file)
+        {
+            if (allMods.TryGetValue(file, out var types))
+            {
+                foreach (Type mod in types)
+                {
+                    //if mod is not loaded
+                    if (!IsLoaded(mod))
+                    {
+                        ModObjects.AddComponent(mod);
+                        Logger.Log("Loaded: " + mod.Name + " From file: " + file.Name);
+                    }
+                }
+            }
+        }
+
+        //Unloads a mod from game
+        public void Unload(FileInfo file)
+        {
+            if (allMods.TryGetValue(file, out var types))
+            {
+                foreach (Type mod in types)
+                {
+                    //if mod is loaded
+                    if (IsLoaded(mod))
+                    {
+                        UnityEngine.Object.Destroy(ModObjects.GetComponent(mod));
+                        Logger.Log("Unloaded: " + mod.Name + " From file: " + file.Name);
+                    }
+                }
+            }
+        }
+    }
+}

src/ModLogger.cs

@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+
+namespace BWModLoader
+{
+    /// <summary>
+    /// Handles logging
+    /// </summary>
+    public class ModLogger
+    {
+        string prefix;
+        string file;
+
+        /// <summary>
+        /// Log history
+        /// </summary>
+        public List<string> Logs { get; } = new List<string>();
+
+        public ModLogger(string prefix, string file = null)
+        {
+            this.prefix = prefix;
+            this.file = file;
+            if (!string.IsNullOrEmpty(file) && !File.Exists(file))
+            {
+                Directory.CreateDirectory(Path.GetDirectoryName(file));
+                File.WriteAllText(file, "");
+            }
+        }
+
+        /// <summary>
+        /// Clears ingame log and log files
+        /// </summary>
+        public void ClearLog()
+        {
+            Logs.Clear();
+            if (!string.IsNullOrEmpty(file) && File.Exists(file))
+            {
+                File.Delete(file);
+            }
+        }
+
+        /// <summary>
+        /// Log to debugger and output.txt
+        /// </summary>
+        public void Log(string output)
+        {
+            Console.WriteLine(prefix + output);
+            Logs.Add(prefix + output);
+            if (!string.IsNullOrEmpty(file))
+            {
+                File.AppendAllText(file, prefix + output + Environment.NewLine);
+            }
+        }
+
+        /// <summary>
+        /// Only logs messages in Debug builds of the modloader
+        /// </summary>
+        public void DebugLog(string output)
+        {
+#if DEBUG
+            Log(output);
+#endif // DEBUG
+        }
+    }
+}