LANCommander.Documentation/Interposer/Overview.md

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Overview	1

Introduction

The LANCommander Interposer is a set of Windows API hooks designed to make games easier to run on modern platforms. The current version of the interposer adds the following functionality to almost any game:

• File path redirection
• DNS redirection
• Registry emulation
• FastDL support
• Rich presence (Discord)

Objective

While this project is under the LANCommander branding, its functionality and codebase live outside the LANCommander client/server. This compatibility shim was created solely to normalize the way games function within a Windows environment. With around 30 years of games released for post-DOS PCs and an endless amount of standards implemented by developers, Interposer was created specifically to tackle the following headaches:

• Games should not need administrator privileges to run
• Save paths should be able to be customized and coalesce into one location
• Any configuration of a game should happen within the game's directory or a user directory
• Games should not use the registry
• Games should be portable applications

This compatibility shim is not meant to tackle things like graphics APIs or Linux compatibility. If you're looking for that, check out the following projects:

• dgVoodoo2 | Glide, DirectX1-7, Direct3D
• DxWnd | Windowed mode, misc compatibilty fixes for very old APIs
• Proton | Linux compatibilty for Steam games

Installation and Use

Configuration and use of the Interposer is broken down on this site under the following resources:

• Releases
• Getting Started
• Logging
• File Redirection
• DNS Redirection
• Registry Emulation
• FastDL
• Player Identity
• Rich Presence
• Plugins