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>
