Explorer

An in-game explorer and a suite of debugging tools for IL2CPP and Mono Unity games, using MelonLoader and BepInEx.

• Current status
• How to install
• How to use
  • Mod Config
• Features
  • Mouse Control
• Building
• Credits

Current status

Mod Loader	Il2Cpp	Mono
MelonLoader	✔	✔
BepInEx	? (WIP)	✔

IL2CPP Issues:

• .NET 3.5 is not currently supported (Unity 5.6.1 and older), this might change in the future.
• Some methods may still fail with a MissingMethodException, please let me know if you experience this (with full MelonLoader log please).
• Reflection may fail with certain types, see here for more details.
• Scrolling with mouse wheel in the Explorer menu may not work on all games at the moment.

How to install

MelonLoader

Requires MelonLoader to be installed for your game.

1. Download the relevant Explorer_MelonLoader_.zip from Releases.
2. Unzip the file into the Mods folder in your game's installation directory, created by MelonLoader.
3. Make sure it's not in a sub-folder, Explorer.dll and mcs.dll should be directly in the Mods\ folder.

BepInEx

Requires BepInEx to be installed for your game.

1. Download the relevant Explorer_BepInEx_.zip from Releases.
2. Unzip the file into the BepInEx\plugins\ folder in your game's installation directory, created by MelonLoader.
3. Make sure it's not in a sub-folder, Explorer.dll and mcs.dll should be directly in the plugins\ folder.

How to use

• Press F7 to show or hide the menu.
• Use the Scene Explorer or the Object Search to start Exploring, or the C# Console to test some code.
• See below for more specific details.

Mod Config

There is a simple Mod Config for the Explorer, which is generated the first time you run it.

This config is generated to [Game_Directory]\Mods\Explorer\config.xml. Edit the config while the game is closed if you wish to change it.

Main_Menu_Toggle (KeyCode)

• Sets the keybinding for the Main Menu toggle (show/hide all Explorer windows)
• See this article for a full list of all accepted KeyCodes.
• Default: F7

Default_Window_Size (Vector2)

• Sets the default width and height for all Explorer windows when created.
• x is width, y is height.
• Default: <x>550</x> <y>700</y>

Features

An overview of the different Explorer menus.

Scene Explorer

• A simple menu which allows you to traverse the Transform heirarchy of the scene.
• Click on a GameObject to set it as the current path, or Inspect it to send it to an Inspector Window.

Inspectors

Explorer has two main inspector modes: GameObject Inspector, and Reflection Inspector.

Tips:

• When in Tab View, GameObjects are denoted by a [G] prefix, and Reflection objects are denoted by a [R] prefix.
• Hold Left Shift when you click the Inspect button to force Reflection mode for GameObjects and Transforms.

GameObject Inspector

• Allows you to see the children and components on a GameObject.
• Can use some basic GameObject Controls such as translating and rotating the object, destroy it, clone it, etc.

Reflection Inspector

• The Reflection Inspector is used for all other supported objects.
• Allows you to inspect Properties, Fields and basic Methods, as well as set primitive values and evaluate primitive methods.
• Can search and filter members for the ones you are interested in.

Object Search

• You can search for an UnityEngine.Object with the Object Search feature.
• Filter by name, type, etc.
• For GameObjects and Transforms you can filter which scene they are found in too.

C# console

• A simple C# console, allows you to execute a method body on the fly.

Inspect-under-mouse

• Press Shift+RMB (Right Mouse Button) while the Explorer menu is open to begin Inspect-Under-Mouse.
• Hover over your desired object, if you see the name appear then you can click on it to inspect it.
• Only objects with Colliders are supported.

Mouse Control

Explorer can force the mouse to be visible and unlocked when the menu is open, if you have enabled "Force Unlock Mouse" (Left-Alt toggle). However, you may also want to prevent the mouse clicking-through onto the game behind Explorer, this is possible but it requires specific patches for that game.

• For VRChat, use VRCExplorerMouseControl
• For Hellpoint, use HPExplorerMouseControl
• You can create your own plugin using one of the two plugins above as an example. Usually only a few simple Harmony patches are needed to fix the problem.

For example:

using Explorer;
using Harmony;
// ...
[HarmonyPatch(typeof(MyGame.MenuClass), nameof(MyGame.MenuClass.CursorUpdate)]
public class MenuClass_CursorUpdate 
{
    [HarmonyPrefix]
    public static bool Prefix()
    {
        // prevent method running if menu open, let it run if not.
        return !ExplorerCore.ShowMenu;
    }
}

Building

If you'd like to build this yourself, everything you need (other than MelonLoader) is included with this repository, there is no need for recursive cloning etc.

1. Install MelonLoader for your game.
2. Open the src\Explorer.csproj file in a text editor.
3. Set the relevant GameFolder value(s) for the version(s) you want to build, eg. set MLCppGameFolder if you want to build for a MelonLoader Il2Cpp game.
4. Open the src\Explorer.sln project.
5. Select Solution 'Explorer' (1 of 1 project) in the Solution Explorer panel, and set the Active config to the version you want to build, then build it.
6. The DLLs are built to the Release\ folder in the root of the repository.

Credits

Written by Sinai.

Thanks to:

• ManlyMarco for their Runtime Unity Editor, which I used for the REPL Console and the "Find instances" snippet, and the UI style.
• denikson for mcs-unity. I commented out the SkipVisibilityExt constructor since it was causing an exception with the Hook it attempted.