MovingDay

MovingDay is an advanced structure relocation mod for Valheim that allows players to select, rotate, and move anything from individual build pieces to entire buildings and structures in real-time, complete with safety checks, container metal cargo handling, tamed animal transport, and automated terrain replication.

Features

• Structure Selection: Select individual pieces (G) or target an entire building using connected BFS flood-fill selection (H). World-generated structures and dungeons are automatically protected and cannot be targeted.
• Move Mode (L): Relocate the selected building in real-time using a blueprint ghost preview.
• Height Adjustment: Smoothly raise or lower the structure placement height in Move Mode using configurable hotkeys (defaults: UpArrow / DownArrow), scroll wheel steps (Alt + Scroll), or snap it back to ground level (Home) / original height (Shift + Home).
• Grid-Snapped Rotations: Relocations are locked to standard Valheim 22.5 degree world-space increments, ensuring placed structures align perfectly with standard Hammer build snaps and center correctly.
• Terrain Cloning & Reversion (Held LeftControl): Replicates and rotates excavations and terrain leveling to the destination, and restores the source terrain to its natural state.
• Height Snapping: Automatically snaps the placement ghost to actual ground level or base height depending on whether terrain copying is active.
• Safety & Metal Cargo Handling:
  • Blocks placement if other players are in the footprint (or teleports them along with the building).
  • Blocks movement or drops metal cargo into cargo crates depending on configurations.
• Tamed Animal Transport: Scans and teleports tamed animals in a 6.0m radius of the structure safely to the destination.
• ZDO Network Authority: Claims authority for ZDOs during relocation to ensure network synchronization without duplication or data loss.

How to Use

1. Equip your Build Tool (Hammer).
2. Select Pieces: Hover over pieces and press G (to select/deselect individual pieces) or H (to select the entire connected structure). Selected pieces will pulsate with a green highlight.
3. Enter Move Mode: While standing near the selected structure, press L to enter Move Mode. A blue-green ghost preview of the structure will spawn.
4. Relocate:
   • Walk or Teleport to your destination. The preview ghost will follow you (even through portals!).
   • Rotate the structure with the mouse scroll wheel.
   • Adjust Height using Up/Down Arrows or Alt + Scroll Wheel (holding Left Shift enables fine-tuning). Press Home to snap the height back to ground level, or Shift + Home to restore the original height offset.
   • Hold Left Control to copy the modified terrain at the source and automatically replicate it at the destination.
5. Place: Left-click to place the structure at the destination. Right-click or press Escape to cancel.

[!IMPORTANT] You must enter Move Mode (Step 3) prior to teleporting or moving away from the structure. If you teleport before entering Move Mode, the source area will unload from memory, and the mod will not be able to cache the structure's layout or generate its preview ghost.

Compatibility with Prefab Hammer

If you also have the Prefab Hammer mod installed, they will automatically work together:

• Shared Selection: They share the exact same selection pool in memory. Highlighting a structure with MovingDay's select keys will immediately make it targetable by Prefab Hammer's save keys, and vice versa.
• Coordinated Highlights: Selecting pieces in one mod keeps them visually highlighted, and clearing the selection in either mod cleans up both mods' highlight overlays.

Configuration & Default Keybindings

• SelectHotkey (Default: G): Toggle selection of a hovered piece.
• SelectConnectedHotkey (Default: H): Select all connected pieces of a structure.
• MoveHotkey (Default: L): Enter Move Mode once pieces are selected.
• HeightUpHotkey (Default: UpArrow): Raise the structure placement height in Move Mode.
• HeightDownHotkey (Default: DownArrow): Lower the structure placement height in Move Mode.
• HeightResetHotkey (Default: Home): Reset structure height adjustment (Home snaps to ground, Shift + Home restores original offset).
• TerrainModifierKey (Default: LeftControl): Hold during placement to copy/revert terrain.
• ConnectionRadius (Default: 2.0 meters): Maximum distance between pieces to consider them connected.
• PlayerSafetyAction (Default: Block): Handling for other players inside the footprint (Block, Teleport, Ignore).
• PlayerMetalAction (Default: BlockMove): Handling for players carrying metal (Allow, BlockMove, LeaveBehind).
• ChestSafetyAction (Default: Block): Handling for open/active containers (Block, Ignore).
• ContainerMetalAction (Default: Block): Handling for container metal cargo (Allow, Block, Drop).
• MoveTamedAnimals (Default: true): Teleport tamed animals inside the footprint.

Changelog

1.0.5

• Added persistent ZDOID selection logic, allowing players to teleport or walk far away without losing selection state.
• Added auto-scanning and highlight restoration when re-equipping the build tool.
• Fixed custom ghost preview destruction during teleports by marking preview objects with DontDestroyOnLoad.
• Fixed placement issues where unloaded structures were only moved in the ZDO database, forcing immediate GameObject instantiation at placement via reflection.
• Added selection clearing by pressing select hotkeys (G or H) while looking at empty space.
• Snapped ghost preview to ground level on Move Mode entry, and added custom height reset key config (HeightResetHotkey) supporting both ground level reset (Home) and original height reset (Shift + Home).

1.0.4

• Migrated hotkey configuration types from text-based strings to direct KeyCode settings, allowing interactive keybind assignment via the BepInEx Configuration Manager GUI.

1.0.3

• Added configurable structure height adjustment hotkeys (HeightUpHotkey and HeightDownHotkey, defaulting to UpArrow / DownArrow) and scroll wheel steps (Alt + Scroll) in Move Mode. Press Home to reset the height offset to 0.
• Fixed Move Mode cancellation logic to prevent premature exits when equipping tools.
• Fixed build placement ghost visibility conflicts in Move Mode.

1.0.2

• Fixed selection of roofs and other large building pieces by measuring physical boundary (AABB collider bounds) distance instead of center-to-center distance, ensuring touching pieces are always selected regardless of size.
• Increased selection spatial search radius to 250m to support massive structures.
• Cached relative offsets and persistent ZDO references at Move Mode entry, preventing pieces from being left behind due to client-side unloading/culling during relocations.
• Moved player/container safety checks and cargo dropping to Move Mode entry to give instant feedback and prevent culling exploits.

1.0.1

• Fixed the BepInEx mod icon to use the correct MovingDay theme instead of PrefabHammer.
• Updated mod version to 1.0.1.

1.0.0

• Initial Release.

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Changelog - MovingDay

All notable changes to the MovingDay mod by DrakosDJ will be documented in this file.

[1.0.5] - 2026-07-10

Added

• Selection Persistence & Re-highlighting: Replaced the volatile selection cache with ZDOID ulong networking IDs. You can now teleport or walk far away, unloading the source area, and the selection will remain in memory. Re-equipping the build hammer automatically scans and re-highlights the pieces when they load back in.
• Convenient Selection Clearing: Pressing either selection key (default G or H) while looking at empty space or nothing will instantly clear your entire selection.
• Configurable Height Reset Key: Created HeightResetHotkey configuration setting (default: Home) to customize the height reset key.
• Height Reset Modes: Pressing the height reset key snaps the preview ghost to ground level, while holding Shift and pressing it restores the original structure height offset.

Fixed

• Teleported Placement Support: Used reflection to invoke ZNetScene.CreateObject when confirming a move while source pieces are unloaded. This forces Valheim to instantly instantiate the relocated pieces' GameObjects at the destination, preventing them from being moved only in the database (invisible).
• Ghost Portal Persistence: Marked custom ghost preview GameObjects with DontDestroyOnLoad to prevent Unity from destroying them during scene transitions when teleporting.

[1.0.4] - 2026-06-30

Added

• PrefabHammer Compatibility: Added seamless selection synchronization with the PrefabHammer mod. If both mods are installed, they will automatically share the exact same selected pieces list. Highlighting pieces in one mod allows you to use the other mod's functions (e.g. moving a PrefabHammer selection, or saving a MovingDay selection as a prefab). Both mods will correctly clean up highlight overlays when selections are cleared or deselected.
• Interactive Configuration Manager Keybinds: Migrated all hotkey configuration types from text-based strings to direct KeyCode settings. This enables BepInEx Configuration Manager's keypress recorder, allowing you to bind keys by clicking a button and pressing the key.

[1.0.3] - 2026-06-27

Added

• Configurable Structure Height Adjustments: Raise or lower the placement height of the relocated structure in Move Mode using hotkeys (defaults: UpArrow / DownArrow) or Alt + Scroll Wheel. Added Home key to reset height adjustment to 0.
• Dynamic Build Tool Checks: Refined Move Mode stability to keep the placement ghost active regardless of changes to equipped tools, preventing accidental early exits from Move Mode.

[1.0.2] - 2026-06-19

Added

• AABB-based Boundary Distance Checks: Selection connected BFS checks physical boundary distance between pieces' colliders instead of center-to-center distance, ensuring roofs and large pieces (e.g. 4x2 stone walls) connect properly.
• ZDO Relocation Caching: Caches relative coordinates and ZDO references at Move Mode entry, resolving parts of the structure getting left behind if their sectors unload during the move.
• Early Safety and Metal Checks: Validates safety/metal configurations at Move Mode entry (when pressing L) instead of placement, preventing unloading exploits and giving immediate feedback.
• Early Cargo Dropping: Drops container metals immediately when entering Move Mode if ContainerMetalAction = Drop.
• Search Radius Expansion: Increased the BFS pre-filter search radius to 250m to support massive structures.

[1.0.1] - 2026-06-18

Fixed

• BepInEx Mod Icon: Corrected the packaged icon to use the new, custom MovingDay icon in a valid 256x256 PNG format, resolving R2ModMan validation issues.

[1.0.0] - 2026-06-17

Added

• Initial Release of MovingDay: A distinct, standalone structure relocation mod for Valheim.
• BFS Structure Selection: Select a structure's pieces automatically by pressing H (connected search) or G (manual selection toggle) while holding any build tool.
• Visual Preview Ghost: Real-time translucent preview ghost showing exactly how the building aligns, rotates (using the mouse scroll wheel), and behaves relative to the terrain before confirming.
• Terrain Replication & Footprint Reversion: Replicate structural excavations, basements, and leveling at the new location by holding LeftControl (default modifier) during placement. Restores/resets the terrain back to its natural shape at the old location footprint.
• Player & Container Safety Checks:
  • Player safety configuration option (PlayerSafetyAction set to Block, Teleport, or Ignore). Automatically teleports the local player along with the structure if selected. Blocks or warns if other players are inside.
  • Chest safety configuration option (ChestSafetyAction set to Block or Ignore) to block moves if a chest is currently in use to prevent inventory desyncs.
• Robust ZDO Management: Safely updates world coordinates in Valheim's local/dedicated databases, handling sector boundaries without duplicating objects or losing container contents.
• Custom Build Script: Standalone build automation (build_movingday.bat) deploying directly to Steam BepInEx plugins and r2modman profiles.