Variant

Custom Unity Editor tooling for the Variant subsystem. Provides Odin property drawers and popup menus that enable designers to manage data variants, add/remove field overrides, and navigate between variants directly in the Unity Inspector.

Architecture

Editor Components

Component	Type	Draws	Purpose
DataVariantSystemDrawer<TData>	Property Drawer	DataVariantSystem<TData>	Foldable variant system with add/remove and paginated navigation
DataOverrideDrawer	Property Drawer	DataOverride	Renders field overrides list with "Add New Override" button
DataFieldOverrideDrawer	Property Drawer	DataFieldOverride	Draws a single override value with a delete button
DataFieldOverrideSelectMenu	Popup Menu	—	Field picker popup for adding overrides from [Overridable] fields

Drawer Hierarchy

The editor drawers form a nested rendering chain, each responsible for one layer of the variant data model:

Key Patterns

Drawer Priority System

All variant drawers use [DrawerPriority(0, 0, 3000)] to take precedence over Odin's default drawers:

Drawer	Priority	Target Type
DataVariantSystemDrawer<TData>	(0, 0, 3000)	DataVariantSystem<TData>
DataOverrideDrawer	(0, 0, 3000)	DataOverride
DataFieldOverrideDrawer	(0, 0, 3000)	DataFieldOverride

Variant Navigation

DataVariantSystemDrawer provides paginated navigation through variants using left/right arrow buttons and a numeric index field. The currently selected variant's DataOverride is drawn below the navigation bar.

Field Override Lifecycle

1. Designer clicks "Add New Override" in DataOverrideDrawer

2. DataFieldOverrideSelectMenu opens, listing fields marked with [Overridable] that are not yet overridden

3. Designer selects a field — DataOverride.AddFieldOverride() is called

4. DataFieldOverrideDrawer renders the new override with its value editor and a red delete button

5. Clicking the delete button removes the override from the DataOverride.fieldOverrides dictionary

Bake Invalidation

When any override value changes in DataVariantSystemDrawer.DrawDataOverrides(), the drawer calls variantSystem.ClearBake() to invalidate cached variants, ensuring the next runtime access triggers a fresh bake.

Dependencies

Dependency	Usage
Odin Inspector	OdinValueDrawer<T>, GenericSelector<T>, SirenixEditorGUI, InspectorProperty
Paragon.Editor	DrawGUI utility for layout, toolbars, colorization, and styling
UnityEditor	EditorGUILayout, EditorGUI, GUILayout

See Also

• Variant — runtime variant subsystem

• DataVariantSystem<TData> — runtime class managing variants

• DataOverride — runtime override collection

• DataFieldOverride — runtime single-field override

• OverridableAttribute — attribute marking overridable fields

• Factory Editor — editor tooling for the factory subsystem