Snappy Signs

A small BepInEx plugin for Valheim that gives signs build snap points, so they align cleanly to walls, beams, posts, and other build pieces during placement — the same way most build pieces already snap.

By default vanilla signs have no snap points, which makes them fiddly to position. Snappy Signs adds snap points at the corners, edge midpoints, and center of each sign's board.

How it works

The plugin Harmony-patches ZNetScene.Awake. After the game registers all prefabs, it finds every prefab that has both a Sign and a Piece component (so it works for any sign, including modded/future ones — no hardcoded prefab names) and injects empty child GameObjects tagged snappoint. Valheim's placement system (Piece.GetSnapPoints) reads those direct children automatically.

Snap point positions are derived from each sign's mesh bounds, so they fit each sign type automatically. Signs that already have snap points (vanilla or added by another mod) are left untouched, and the patch is idempotent.

Configuration

After running once, BepInEx/config/com.syloreon.snappysigns.cfg:

Section	Key	Default	Description
General	Enabled	true	Master toggle.
SnapPoints	Corners	true	Snap points at the four corners.
SnapPoints	EdgeMidpoints	true	Snap points at the midpoint of each edge.
SnapPoints	Center	true	Snap point at the board center.

Changes apply on the next world/game load (prefabs are patched at scene setup).

Building

Requires the .NET SDK and a local Valheim install (for the game assemblies).

# Uses VALHEIM_INSTALL or the default path baked into the .csproj
dotnet build -c Release

# Override the game path and auto-deploy the DLL to your plugins folder:
dotnet build -c Release \
  -p:ValheimInstall="F:\SteamLibrary\steamapps\common\Valheim" \
  -p:DeployDir="F:\SteamLibrary\steamapps\common\Valheim\BepInEx\plugins\SnappySigns"

The compiled SnappySigns.dll is written to bin/Release/.

Installing

1. Install BepInEx for Valheim.
2. Copy SnappySigns.dll into Valheim/BepInEx/plugins/.
3. Launch the game.

Notes / limitations

• Snap points are placed on the board's mid-plane. For signs that include a mounting post in the same mesh, the computed board face may include the post; this is fine for the common wood sign but may be refined later.

Development

Developed with AI assistance (Claude). This mod is tagged AI Generated on Thunderstore.