Editor

Editor tooling for the SceneManagement system. Provides a SceneGraph editor integrated into Unity's Project Settings, custom Inspector drawers for Scene and SceneNode types, a build processor that injects the SceneGraph into builds, and an internal proxy for Unity's hierarchy window.

Architecture

Data Flow

Key Concepts

Concept	Description
SceneGraph as ProjectSettings	The SceneGraph asset lives in ProjectSettings/SceneGraph.asset, not as a regular asset. Accessed via EditorSceneManager.GetSceneGraph()
Auto-sync to Build Settings	SceneGraphEditor detects changes and auto-syncs EditorBuildSettings.scenes on every Inspector repaint
Circular dependency detection	SceneGraphEditor validates the graph for cycles on every repaint. If found, Build Settings are cleared on editor close
Build injection	SceneGraphBuildProcessor copies the asset into Assets/Build/Resources/ before build and restores preloaded assets after
Play mode start scene	EditorSceneManager sets the "Main" scene as playModeStartScene and restores the last active scene after entering play mode

Files

File	Description
EditorSceneManager	Sealed editor extension of SceneManager with scene open/close, asset persistence, and build settings sync
SceneDrawer	Odin property drawer that renders Scene as a read-only SceneAsset field
SceneGraphBuildProcessor	Build pre/post processor that injects SceneGraph into builds as a preloaded asset
SceneGraphEditor	Custom OdinEditor for SceneGraph with circular dependency detection and auto Build Settings sync
SceneNodeDrawer	Odin property drawer for SceneNode with dependency management UI
SceneSelectMenu	Popup scene picker using Odin's GenericSelector for adding scenes and dependencies
Internals/	Internal Unity API proxies

See Also

• SceneManager — Runtime base class for scene loading/unloading

• SceneGraph — Runtime ScriptableObject containing all scene nodes

• SceneNode — Node representing a scene with its dependencies

• Scene — Serializable class wrapping Unity scene references