GrillspettFlattenEarth

Grillspett Flatten Earth

BepInEx mod for Valheim. Adds a hotkey that flattens a large area at once,

raising low ground and lowering high ground to match the height under your

cursor — unlike vanilla's Hoe "Level" tool, which only smooths a small radius

per click and needs the ground pre-adjusted for big height differences.

Features

• One-press large-area flatten — hard-levels everywhere within the radius

to the exact height under your cursor, both raising low spots and lowering

high spots at once.

• Adjustable radius on the fly — Page Up / Page Down resize the area

in 5m steps (up to 100m), with a chat message confirming the new size.

• Circle or square area shape, optional stamina cost, cooldown, and fully

rebindable hotkeys — all configurable, no need to edit anything by hand.

• Multiplayer & dedicated-server safe — reuses the game's own terrain

networking instead of a custom one, so edits stay correctly synced.

• Client-side only — nothing to install on a dedicated server.

How it works

While one of the Hoe's ground tools is selected (Raise Ground or

Level Ground), press the hotkey (default: Home) instead of

left-clicking. The mod reads the exact spot the game is already previewing

(the same point vanilla would edit) and runs a hard terrain-level operation

over a much larger radius in a single call.

This is deliberately different from vanilla's own tools, which turned out

not to be a good fit for a big flatten: Raise Ground does a true level,

but only within a 1.5m radius; Level Ground only smooths (blends

toward the cursor height, with more effect near the center and almost none

near the edge) and always repaints the ground as dirt. Reusing either as-is

over a big radius would give a gentle dome/dip, not a flat plateau.

Instead, the mod temporarily forces the selected piece's own settings to a

hard, paint-free level at the configured radius, places it through the

game's normal piece-placement code, then immediately restores its settings

so regular small-radius clicking is unaffected afterwards. This has to reuse

the real selected piece rather than a custom object: Valheim's terrain

networking never sends the actual radius/settings over the wire, only a

hash of the piece's prefab name - the receiving side looks up its own copy

of that exact, already-known piece to get the real settings, so a made-up

piece fails that lookup outright. Reusing the real piece keeps the whole

operation on the same networked path (TerrainOp/TerrainComp) vanilla

pieces use, so ownership and syncing behave the same as a normal Hoe use.

Press Page Up / Page Down at any time to increase or decrease the

flatten radius in 5m steps; the new radius is shown in a chat message.

On extreme cliffs a single press may not fully flatten the area (same as

vanilla) - just press the hotkey again.

Configuration

Settings are written to

BepInEx/config/grillspett.valheim.flattenearth.cfg after the first run:

| Setting | Default | Description |

|---|---|---|

| FlattenKey | Home | Key that triggers the large flatten. |

| IncreaseRadiusKey | PageUp | Key that increases the flatten radius. |

| DecreaseRadiusKey | PageDown | Key that decreases the flatten radius. |

| Radius | 20 | Radius in meters (2-100). |

| RadiusStep | 5 | Radius change per press of the increase/decrease keys. |

| SquareArea | false | Flatten a square instead of a circle. |

| StaminaCost | 0 | Stamina per use; 0 disables the stamina check. |

| CooldownSeconds | 0.3 | Minimum time between uses. |

Installing

Install through a mod manager (r2modman, Mod Manager,...) like

any other mod — it depends on

BepInExPack_Valheim,

which the manager installs automatically.

Installing manually instead: copy GrillspettFlattenEarth.dll into

BepInEx/plugins/GrillspettFlattenEarth. Either way, it only needs to go in

your client profile — it just triggers the game's existing, unmodified

terrain-networking RPCs (the same ones vanilla Hoe use already sends), so a

dedicated server d