SailwindCoop

Sailwind LAN Co-op Mod

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📖 Description

Sailwind LAN Co-op is a mod that adds multiplayer functionality to the game Sailwind. It allows you to play with friends over LAN (Local Area Network) or through VPN/tunneling services.

Current Version: 0.4.3

Wire Protocol: 89. Use the same build on every machine. Most new features still await end-to-end in-game validation; see the release notes.

Requirements: BepInEx 5.x, Sailwind 0.39

✨ Features

• LAN Multiplayer: Play with friends on the same network
• Cross-Internet Play: Use with VPN services (Hamachi, ZeroTier, etc.)
• Configurable Settings: Adjust network parameters, player name, and more
• In-game Co-op Menu: Press F8 to host, join, disconnect, choose avatar, show diagnostics, and open debug tools
• Default Avatar Included: The release includes avatar.bundle for remote player models
• Avatar Customization: Replace avatar.bundle with your own compatible bundle if desired
• Up to 5 Players: One host with up to 4 clients simultaneously
• Shared Sea: Waves, weather and time of day run on the host's clock, so every player sees the same water under the same hull
• Quiet by Default: Routine diagnostics are off; serious errors still use a limited log budget
• Crew Status and Host Controls: See who is loading or ready, their ping and boat; hosts can lock the session or remove a guest
• Gesture Wheel: Hold G to wave, point, salute or shout "Land ho!" to your crew
• Hands on the Ship: Other players' avatars reach for the item they carry and the winch, wheel or rope they hold

📥 Installation

Prerequisites

• Sailwind 0.39 installed via Steam
• BepInEx 5.x installed for Sailwind
• If not installed, download from:
• Extract to your Sailwind game folder

Mod Installation

• Download the latest release archive
• Extract every file of the archive to: Sailwind/BepInEx/plugins/SailwindCoop/
• Launch the game
• To change your avatar, press F8, open Settings and click Avatar

🎮 How to Play

For gameplay details such as economy, missions, cargo, items, damage, mooring, anchor, sleep, and guest progress, read MULTIPLAYER_GUIDE.md.

Hosting a Game (You will be the server)

• Launch Sailwind
• Load or start a save game
• Press F8 to open the Sailwind Co-op menu
• Click Host
• Share your IP address with friends (see "Finding Your IP" below), or switch the menu to Steam before pressing Host so Steam friends can join without an IP address (see MULTIPLAYER_GUIDE.md)
• Wait for friends to connect

Joining a Game

• Launch Sailwind
• Important: Do NOT load a save game (stay at main menu)
• Press F8 to open the Sailwind Co-op menu
• Enter the host IP and click Join
• Default IP is 127.0.0.1 (localhost)
• The menu writes the value to BepInEx/config/com.sailwind.coop.cfg
• The host's world is sent to you automatically and loaded into the co-op save slot — wait for it to finish

Disconnecting

• Press F8 and click Disconnect
• After a connection has succeeded once, Reconnect repeats the join from the main menu. It is intentionally unavailable inside an already loaded world.

Crew And Host Controls

• The Crew section shows each player's loading state, ping, and current boat.
• The host can use Lock session / Open session without disconnecting existing players.
• The host can remove a guest with the two-step Kick / Sure? action.
• Teleport to boat puts you back on the deck if you fell overboard or the boat left without you.

Gestures

• Hold G during a session to open the gesture wheel, move the mouse to a gesture and release. Release in the middle, or press Esc, to cancel.
• Gestures: Wave, Land ho!, Point, Come here, Applause, Shrug, Salute, Hooray.
• "Land ho!" and "Point" aim where you are looking. "Land ho!" also shouts, and other players hear it from where you stand.
• Walking ends a gesture. You do not see your own gesture, because the game is first person.
• The first time the wheel becomes available, a short hint appears on screen