---
name: PS_Editor plugin project
description: Runtime editor plugin for UE 5.5 - object placement, scene editing, JSON save/load in packaged builds
type: project
---

PS_Editor is a runtime editor plugin for Unreal Engine 5.5 that will be integrated into the PROSERVE project.

**Why:** Enable runtime scene editing in packaged builds - place objects, configure properties, define scenarios, manipulate splines, modify lighting, and save/load scenes as JSON.

Key decisions:
- UI: UMG driven by C++ (Slate)
- Gizmos: Custom actor with BasicShapes + unlit material (InteractiveToolsFramework is editor-only)
- Serialization: JSON via Json/JsonUtilities modules (future)
- Naming: PS_Editor_ prefix on all files/classes
- Plugin path: Unreal/Plugins/PS_Editor/
- AZERTY keyboard layout: arrows + A/Q for movement, E/R/T for modes

## Completed Phases

### Phase 1 - GameMode + Camera
- PS_Editor_GameMode, PS_Editor_Pawn, PS_Editor_PlayerController, PS_Editor_HUD
- Camera: Fly (RMB), Pan (LMB drag), Orbit (Alt+LMB / MMB)
- Movement: arrows + A (up) / Q (down)

### Phase 2 - Selection + Transform + Undo
- SelectionManager: raycast click-to-select, Ctrl+click multi-select, Movable actors only
- Gizmo: custom actor with colored arrows (R/G/B), cones, SDPG_Foreground, constant screen size
- Translate/Rotate/Scale via gizmo drag, hotkeys E/R/T
- Snap to ground (End key), soft-delete (Delete key)
- Undo/Redo system: custom UndoManager, Ctrl+Z / Ctrl+Y, 50 action stack
- Properties panel: editable Location/Rotation/Scale fields
- Toolbar: mode buttons + snap ground
- Material: M_PS_Editor_Gizmo (Unlit, Vector Parameter "Color" → Emissive, Translucent, Disable Depth Test)

## Next: Phase 3 - Object Spawning
- Catalog/list of objects to place
- Drag & drop or click to spawn
- Duplication of existing objects

## Next: Phase 4 - JSON Serialization
- Save/load scenes as JSON