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Kiwi's Co-Op Mod for Half-Life: Alyx

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Downloads

Workshop Subscribers

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Contributors


Kiwi's Co-Op Mod for Half-Life: Alyx (KCOM) is a cooperative experience for Half-Life: Alyx.

Features

  • Simultaneous gameplay with up to 16 players
  • VR hands are synced across clients
  • Physics objects are synced across clients
  • Trigger outputs are synced across clients
  • Custom addon (gamemode/plugin) support
  • Lua scripting support
  • Support for Workshop maps
  • Discord rich presence
  • Public addon contents

Installation

  • Subscribe to the Workshop Addon on Steam
  • Download the latest release from GitHub
  • Extract the contents of the zip file to a safe place (e.g. a new folder on your desktop)
  • Set the following launch options for Half-Life: Alyx in Steam: -console -vconsole -language english
  • Launch the game
  • Open KCOM using KiwisCoOpMod.exe
  • Follow instructions within the KCOM application
  • KCOM is ready!

Connecting to a Server

  • Follow the instructions to install KCOM
  • Click on the "Client" tab in the KCOM application
  • Check the "Enabled" box to allow your client to connect
  • Set the IP address to the public IP address of the remote server
  • Set the port to the port of the remote server
  • (Optional) If provided, set the password to the password of the remote server
  • Set a username for your client
  • Click "Connect"
  • KCOM will connect to the remote server and start playing!

Hosting a Server

  • Follow the instructions to install KCOM
  • (Optional) Follow the client instructions to create a listen server
    • Note: Non-listen servers are not fully developed yet, please follow the above instructions for now
  • Click on the "Server" tab in the KCOM application
  • Check the "Enabled" box to host a server
  • (Optional) Set a password for the server, make sure to provide it to peers
  • Type in a map name to load initially (use mp_kiwitest for testing)
  • Ensure that the port is forwarded, try UPnP mapping via "File" > "Forward Port via UPnP"
  • Click on the "Start" button to start the server
  • KCOM is now hosting a server! You can now provide your public IP address to peers

Client Commands

  • Type "/help" into the chat box as a client to view a list of commands
  • Default commands:
    • /echo <message> - Echo a message
    • /ping - Check your ping
    • /help - This help menu
    • /list - List all players on the server.

Server Commands

  • As a server host, click on the "Chat" button in KCOM until it says "Server" to enter server operator mode
  • Type "help" to view a list of server operator commands
  • Default commands:
    • echo <message> - Echo a message
    • persistent_set <key> <value> - Set a persistent Lua value
    • persistent_get <key> - Get a persistent Lua value
    • persistent_remove <key> - Remove a persistent Lua value
    • persistent_get_all - List all persistent Lua values
    • persistent_clear - Clear all persistent Lua values
    • script_refresh <script> - Refresh a Lua script
    • script_refresh_all - Refresh all Lua scripts
    • kick <username> - Kick a player from the server
    • ban <username> - Ban a player from the server
    • ipban <username> - Ban a player from the server by IP
    • unban <username> - Remove a player's ban from the server
    • lua <code> - Run Lua code
    • tp <username> (<username>/<x> <y> <z>) - Teleport a player to a location
    • tpall (<username>/<x> <y> <z>) - Teleport all players to a location.

Lua Scripting

Requirements

Instructions

  • Follow the instructions to install KCOM
  • Follow the server instructions to host a server
  • Open the scripts folder in the KCOM installation directory using a code editor

Configuration

  • Open base/_config.lua in the scripts folder using a code editor
  • Follow instructions within the file to configure base Lua settings

Plugins

  • Copy base/basic.lua to a new folder (or the root scripts folder) under a different name to create a new "plugin" script
  • Edit the script to your liking, pay attention to what is being "handled" as handling events will cancel out internal KCOM events and other scripts in alphabetical order

Lua Documentation

Coming soon!

Check out the Discord for Lua help if needed.

Script Redistribution

You are free to modify and redistribute KCOM's default ("base") Lua scripts without permission, however when it comes to others' scripts, please provide credit to the original author(s) and link to the original source.

Feel free to provide scripts to the KCOM community via the Discord as there is a dedicated channel for Lua scripting.

Debugging/Modding

Requirements

  • Visual Studio 2022 or later
    • Select ".NET desktop development" during installation
  • 7-Zip
  • Git
  • Half-Life: Alyx - Workshop Tools
    • You can find this under the DLC section of Half-Life: Alyx within your Steam library

Instructions

  • Clone the repository within Visual Studio
  • Build all projects for KCOM (x64) by pressing Ctrl+Shift+B or by clicking "Build" > "Build Solution"
    • Note: You may need to build the KiwisCoOpModCore project first, this can be done by right-clicking the project and selecting "Build"
  • In Visual Studio, set KiwisCoOpMod as the startup project by right-clicking the project and selecting "Set as Startup Project"
  • Click on the green "Start" button to start debugging
  • Visual Studio will automatically launch KCOM with debugging enabled

Symlinks

For addon development, you may want to "symlink" folders from this repository to your game:

  • Open a command prompt as an administrator
  • Type cd into the command prompt and press space
  • Copy Half-Life: Alyx's game/hlvr_addons directory path and paste it into the command prompt, then press enter
    • Note: You can create these folders relative to the Half-Life Alyx folder if they don't exist
    • Note: You may need to "wrap" the path in quotes if it contains spaces
  • Type mkdir kiwimp_alyx into the command prompt and press enter
  • Type cd kiwimp_alyx into the command prompt and press enter
  • Type mklink /J scripts and press space
  • Find the repository's directory, this is likely C:\Users\{username}\source\repos\KCOM
  • Copy the KCOM repository directory path and paste it into the command prompt
  • Type \WorkshopAddon\game\hlvr_addons\kiwimp_alyx\scripts at the end of the command prompt to complete the path and press enter
  • Type cd into the command prompt and press space
  • Copy Half-Life: Alyx's content/hlvr_addons directory path and paste it into the command prompt, then press enter
    • Note: You can create these folders relative to the Half-Life Alyx folder if they don't exist
    • Note: You may need to "wrap" the path in quotes if it contains spaces
  • Type mklink /J kiwimp_alyx and press space
  • Copy the KCOM repository directory path and paste it into the command prompt
  • Type \WorkshopAddon\content\hlvr_addons\kiwimp_alyx at the end of the command prompt to complete the path and press enter
  • Launch Half-Life: Alyx with Workshop tools enabled
    • Type -console -vconsole -language english into the launch options for Half-Life: Alyx in Steam before launching
  • Open VConsole by pressing the tilde (~) key
  • Type addon_enable kiwimp_alyx into VConsole and press enter
  • Changes within the Workshop tools will now be reflected to the KCOM repository and vice versa

Help & Support

Join the Discord for support between users and developers.