Monolith — Overview

What It Is

Monolith is the scene-management and batch-operations layer for Unreal Engine production workflows. Rather than requiring custom Blueprint scripts or manual repetition for common production tasks — renaming a hundred props, snapping a set of actors to a surface, moving selected actors into a streaming level — Monolith exposes all of these operations as right-click context menu entries that are always one or two clicks away in the editor.

The plugin is editor-only and has no runtime module. Every operation targets the currently selected actors in the World Outliner or the currently selected assets in the Content Browser, operates immediately, and registers an undo transaction so that Ctrl+Z works as expected.

Monolith is designed for medium-to-large production scenes where scene hygiene, iteration speed, and organizational consistency matter: virtual production stages, large environment sets, cinematic sequences with dozens of bound actors, and content libraries with hundreds of assets.

Module Layout

Monolith is a single-module plugin. There is no runtime module and no dependency on any Monolith code at package time.

Module	Type	Description
`MonolithEditor`	Editor	All menu registration, utility implementations, settings classes, and DataAsset types

The module entry point is FMonolithEditorModule, which calls UToolMenus at startup to register all Monolith submenus into the World Outliner context menu (LevelEditor.ActorContextMenu) and the Content Browser context menu (ContentBrowser.AssetContextMenu). Category entries are registered conditionally based on the toggle values in UMonolithSettings, so disabling a category in Project Settings removes its menu section entirely without any overhead.

Access Points

Right-click any actor or multi-selection of actors in the World Outliner. The Monolith submenu appears at the bottom of the context menu. Hover over it to expand the category list, then hover over a category to see its operations.

All operations in the World Outliner context menu act on the current selection. If an operation requires a minimum number of actors (for example, distributing evenly requires at least two), it is either greyed out or produces a notification explaining the requirement.

Right-click any asset or multi-selection of assets in the Content Browser. The Monolith submenu appears and shows only the categories that operate on assets: Materials, Dependencies, and Placement.

Utility Categories

Category	Description	Key Operations
Audit	Scene health checks that surface common production mistakes	Find zero-scale actors, find broken material references, find unbound Sequencer actors, find actors outside world bounds, find duplicate labels, find actors missing required tags
Collision	Batch-set collision presets and complexity across a selection	Set collision preset (BlockAll, OverlapAll, NoCollision, etc.), enable complex-as-simple, disable all collision
Folders	Create and manage World Outliner folder organization	Create folder from selection, move to existing folder, organize by class into subfolders, select all actors in same folder
Layers	Manage World layer membership	Create layer from selection, add selection to existing layer, organize actors by class into layers
Layout	Spatially arrange actors using procedural patterns	Arrange in Grid, Arrange in Circle, Arrange in Line, Arrange in Arc, Stack Vertically, Spread from Center
Level Sequence	Batch Sequencer binding and track operations	Add actors to sequence with transform tracks, remove actors from sequence, bake evaluated transforms to world, set default values from world transforms
Level Streaming	Move and organize actors across streaming levels	Move to new streaming level, move to existing streaming level, organize by class into streaming levels, merge sub-level to persistent, toggle streaming level visibility
LOD & Culling	Manage level-of-detail settings on mesh actors	Force specific LOD level, set culling distance, clear forced LOD
Materials	Batch material assignment and discovery	Batch apply material to all selected meshes, copy material from first to all, find actors with material overrides, batch replace material references in assets (Content Browser)
Naming	Actor label and tag management	Add prefix, add suffix, add sequence numbers, find and replace in labels, auto-name from class, strip trailing numbers, copy label to tags
Snapshot	Lightweight transform capture and restore	Capture named snapshot of selected actors, restore selection from snapshot, full-level snapshot
Transform	Spatial manipulation beyond the standard transform widget	Randomize position/rotation/scale, snap to ground, align to surface normal, distribute evenly along axis, spawn transform gizmo parent, detach from gizmo parent
Visibility Groups	Tag-based visibility grouping for fast scene control	Create visibility group from selection, toggle group visibility, show all groups, select all group members
Dependencies	Content assessment from the Content Browser	Show level dependencies by asset type, find unused assets in folder, export dependency list to CSV
Placement	Place Content Browser assets into the scene in bulk	Place as grid, create asset zoo organized by mesh size

Configuration System

Monolith exposes three configuration objects. None require an editor restart when changed.

UMonolithSettings

UMonolithSettings is the plugin's UDeveloperSettings subclass, accessible at Edit > Project Settings > Plugins > Monolith Utilities. It contains one boolean toggle per category group. When a toggle is disabled, the corresponding menu section is not registered with UToolMenus at all, meaning there is zero menu overhead for categories you do not use.

It also holds a soft object reference to the active UMonolithConfig DataAsset, and an optional reference to a UMonolithOrganizationPreset DataAsset for class-based organization operations.

UMonolithConfig

UMonolithConfig is a UDataAsset subclass you create in your Content Browser and assign in UMonolithSettings. It stores all numeric and string defaults used by the utility operations: grid spacing values, randomization ranges, sequence number format strings, naming patterns, layout radii, and so on.

Creating a project-specific config lets you lock in values appropriate for your scene scale (for example, centimeter vs. meter-scale randomization ranges) without modifying plugin source.

UMonolithOrganizationPreset

UMonolithOrganizationPreset is a UDataAsset subclass that maps actor classes to default destinations for the "Organize by Class" family of operations. It contains three maps:

Map	Key	Value
`ClassToFolderMap`	`UClass*`	Folder path string
`ClassToLayerMap`	`UClass*`	Layer name string
`ClassToStreamingLevelMap`	`UClass*`	Streaming level asset path

When an "Organize by Class" operation runs, it looks up each actor's class (walking the inheritance chain) in the active preset's maps and moves the actor to the matching destination. Actors whose class is not in the map are left in place.

Undo/Redo Support

Every operation in Monolith opens a named FScopedTransaction before modifying any actor or asset state. This means all Monolith operations integrate with the standard editor undo stack and are reversible with Ctrl+Z. Multi-step operations (for example, moving 200 actors into a new folder) are grouped as a single undo transaction so one Ctrl+Z reverses the entire batch.

Note

Operations that only read state — Audit checks, dependency listing, and CSV export — do not open a transaction because they do not modify anything.