58 lines
2.7 KiB
Markdown
58 lines
2.7 KiB
Markdown
# ADR 0018: Componentized actor inspector and material overrides
|
|
|
|
## Status
|
|
|
|
Accepted.
|
|
|
|
## Context
|
|
|
|
The actor inspector had started to expose too many unrelated concerns through a
|
|
single static mesh renderer entry: source model paths, mesh labels, material
|
|
overrides, shadow flags, and collider generation. That made imported FBX/glTF
|
|
actors look format-specific and prevented a Unity-style component list where
|
|
rendering, collision, rigid body state, and material overrides are separate
|
|
authoring concepts.
|
|
|
|
The editor component system spec also requires stable actor/component IDs,
|
|
registered editor-visible components, Transform pinned at the top, and an Add
|
|
Component footer rather than an ad hoc button near Transform.
|
|
|
|
## Decision
|
|
|
|
- Actors now have stable editor-facing identity components (`ActorId`,
|
|
`ActorName`) and repeatable authoring items use `ComponentInstanceId`.
|
|
- Editor-visible actor components are described by an
|
|
`EditorComponentRegistry`; the Add Component footer reads from this registry.
|
|
- `InspectorOrder` stores editor component order plus per-component active
|
|
state. Collapse state is session-only UI state; active state is persisted with
|
|
the scene and is undoable.
|
|
- `StaticMeshRenderer` stores `MeshRenderSlot` values that reference imported
|
|
content-browser assets through `EditorAssetRef { asset_id, sub_asset_id,
|
|
label }`. Actor renderer data does not store source FBX/glTF paths.
|
|
- Static mesh hydration resolves `EditorAssetRef` through generated artifacts in
|
|
`assets/meshes/generated/`.
|
|
- Collision and rigid body state are separate authoring components:
|
|
`ColliderDesc` and `RigidBodyDesc`. Mesh collider generation creates
|
|
`ColliderDesc::StaticMesh` instead of renderer collider flags.
|
|
- Materials are shader-schema aware. `MaterialDesc` stores a `ShaderRefDesc`,
|
|
typed shader parameters, and texture bindings. Actor-level material edits are
|
|
stored in `MaterialOverride`; shared material assets remain content-browser
|
|
assets.
|
|
|
|
## Consequences
|
|
|
|
- New model placement creates `StaticMeshRenderer` plus optional
|
|
`RigidBodyDesc`/`ColliderDesc`; legacy `PhysicsBody` remains loadable for old
|
|
scenes.
|
|
- Actor inspectors show imported asset selectors for mesh/material slots instead
|
|
of source-path text fields.
|
|
- Disabling a component in the inspector keeps its authoring data but prevents
|
|
hydration/runtime systems from using it. Mesh, material, light, physics, and
|
|
post-process hydration strip stale runtime components when active state
|
|
changes.
|
|
- Existing static mesh artifacts without part IDs are still resolved by deriving
|
|
stable sub-asset IDs from loader labels.
|
|
- Custom shader support is schema-driven; v1 stores and edits typed parameters,
|
|
while runtime rendering currently maps built-in Lit/Unlit through Bevy
|
|
`StandardMaterial`.
|