Spline placement: New Spline button (S key) enters placement mode where clicks
add control points. Right-click/Enter finishes, Escape cancels. Min 2 points.
Spline visualization as cross-shaped quad strip (vertical + horizontal ribbons).
Point editing: select spline to show handles, click a handle to position gizmo
on it, then use translate gizmo to move individual points. Undo supported via
full-state snapshots (SplinePointAction).
Visual feedback: auto-generated M_PS_Editor_SplineLine material (unlit opaque
with depth test) for normal state. Gizmo material (no depth test) for selected
state. Center cube at centroid for whole-spline selection. Handles highlight
on selection.
Serialization: spline points exported to CustomProperties (PointCount + Point_N).
C++ class fallback via FindObject for LoadScene. Spline appears in scene outliner.
Still WIP: depth material swap on selection, serialization edge cases, and
point editing polish to be refined.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Property Editing:
- New EditableComponent with two-step dropdown (Select Component → Add Property)
to declare which properties are exposed in the runtime editor
- Dynamic property panel below Transform: supports float, bool, string, FVector,
FRotator, FLinearColor with per-tick refresh and keyboard focus guard
- PropertyAction undo/redo via ExportText/ImportText reflection
- Custom properties serialized to JSON (TMap in ActorData, version 2)
- Copy/paste/duplicate propagate custom property values
Scene Outliner:
- Scrollable list of spawned actors in the right panel
- Click to select, selected actor highlighted in blue
- Auto-refreshes when actors are added/removed
Selection Filter:
- Only actors spawned by the editor (catalogue, duplicate, paste, load)
are selectable — static scene geometry is no longer clickable
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Selection Outline:
- Post-process material auto-generated in C++ (no manual UE editor work)
- 8-neighbor edge detection on CustomStencil buffer
- Dynamic pixel-accurate offsets via SceneTexture InvSize (any resolution/ratio)
- Lerp blending (no overexposure), color AF1500, 1px thickness
- BL_SceneColorAfterDOF placement (before TAA, matches stencil resolution)
- Deferred creation via OnPostEngineInit (no startup crash)
- Material saved as persistent .uasset, loaded at runtime
Gizmo Polish:
- Arrow shaft thickness halved (0.03), cone tips halved (0.075x0.1)
- Gizmo stays at initial position during rotation/scale (no jitter)
- Gizmo follows selection during translation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- PostProcessComponent on Pawn (unbound, applies to entire scene)
- Auto-loads M_PS_Editor_SelectionOutline material at BeginPlay
- Removed debug bounding box from Tick
- Custom depth stencil already toggled on selected actors
- Material needs to be created in UE editor (edge detection on CustomStencil)
- Instructions: use TexCoord + Constant2Vector offsets for 4-neighbor sampling
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Serialization:
- SceneData USTRUCT with Version, SceneName, Timestamp, Actors array
- ActorData: ClassPath, Location, Rotation, Scale per spawned actor
- SceneSerializer: SaveScene/LoadScene/ClearScene/GetSavedSceneNames
- Files stored in Saved/PS_Editor/Scenes/{name}.json
- Uses FJsonObjectConverter for clean USTRUCT-to-JSON conversion
SpawnManager:
- Tracks all spawned actors in SpawnedActors array
- SpawnActorDirect: spawn from class/transform (used by scene loading)
- DestroyAllSpawnedActors: clean scene clear
UI:
- Save field + button in toolbar area
- New Scene button to clear all spawned actors
- Saved scenes list with click-to-load
- Auto-refreshes scene list after save
- Clears selection on load/new
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Spawn System:
- SpawnableComponent: marker component for Blueprint actors (name, category, thumbnail)
- SpawnCatalog DataAsset: lists all spawnable Blueprints with Factory for easy creation
- SpawnManager: loads catalog, spawns actors in front of camera, ensures Movable mobility
- Reads metadata from Blueprint component templates (no temp spawn needed)
Catalogue UI:
- Left panel with scrollable list grouped by category
- Thumbnail cards (80x80) with name below, click to spawn
- "Capture All Thumbnails" button on DataAsset: auto-generates from UE thumbnails
Undo/Redo improvements:
- SpawnAction: undo hides spawned actor, redo shows it
- Delete confirmation dialog (Yes/No) before soft-delete
- Undo/redo auto-deselects hidden actors and refreshes gizmo
- Proper cleanup of hidden actors when actions pruned from stack
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Click-to-select with raycast (Movable actors only)
- Ctrl+click for multi-select, click empty to deselect
- Click vs drag detection (pixel threshold) to avoid accidental selection
- SelectionManager owned by PlayerController with OnSelectionChanged delegate
- Custom depth stencil toggling on selected actors
- Debug bounding box visualization for selection
- Custom translate gizmo actor with colored arrows (R/G/B) and cone tips
- Gizmo renders on top of scene (SDPG_Foreground + Translucent depth test disabled)
- Constant screen-size gizmo scaling based on camera distance
- Unlit gizmo material with Color vector parameter (M_PS_Editor_Gizmo)
- r.CustomDepth=3 enabled for future outline post-process
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Runtime editor plugin with UE viewport-style camera controls:
- ZQSD/Arrows movement (always active), E/A for up/down
- LMB: pan (horizontal move + yaw), RMB: free fly look
- Alt+LMB / MMB: orbit around focal point, scroll: zoom
- HUD with controls help, cursor auto-hide during camera ops
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
