fix item scale surface

apps/editor/components/tools/item/move-tool.tsx

@@ -34,13 +34,15 @@ function MoveItemContent({ movingNode }: { movingNode: ItemNode }) {
     draftNode,
     // Duplicates start fresh in floor mode; wall/ceiling draft is created lazily by ensureDraft
     initialState: isNew ? { surface: 'floor', wallId: null, ceilingId: null, surfaceItemId: null } : getInitialState(movingNode),
+    // Preserve the original item's scale so Y-position calculations use the correct height
+    defaultScale: isNew ? movingNode.scale : undefined,
     initDraft: (gridPosition) => {
       if (isNew) {
         // Duplicate: use the same create() path as ItemTool so ghost rendering works correctly.
         // Floor items get a draft immediately; wall/ceiling items are created lazily on surface entry.
         gridPosition.copy(new Vector3(...movingNode.position))
         if (!movingNode.asset.attachTo) {
-          draftNode.create(gridPosition, movingNode.asset, movingNode.rotation)
+          draftNode.create(gridPosition, movingNode.asset, movingNode.rotation, movingNode.scale)
         }
       } else {
         draftNode.adopt(movingNode)

apps/editor/components/tools/item/placement-strategies.ts

@@ -411,7 +411,7 @@ export const itemSurfaceStrategy = {
 
     const x = snapToGrid(localPos.x, ourDims[0])
     const z = snapToGrid(localPos.z, ourDims[2])
-    const y = surfaceItem.asset.surface.height
+    const y = surfaceItem.asset.surface.height * surfaceItem.scale[1]
 
     const worldSnapped = surfaceMesh.localToWorld(new Vector3(x, y, z))
 
@@ -445,7 +445,7 @@ export const itemSurfaceStrategy = {
 
     const x = snapToGrid(localPos.x, ourDims[0])
     const z = snapToGrid(localPos.z, ourDims[2])
-    const y = surfaceItem.asset.surface.height
+    const y = surfaceItem.asset.surface.height * surfaceItem.scale[1]
 
     const worldSnapped = surfaceMesh.localToWorld(new Vector3(x, y, z))
 

apps/editor/components/tools/item/use-draft-node.ts

@@ -18,7 +18,7 @@ export interface DraftNodeHandle {
   /** Whether the current draft was adopted (move mode) vs created (create mode) */
   readonly isAdopted: boolean
   /** Create a new draft item at the given position. Returns the created node or null. */
-  create: (gridPosition: Vector3, asset: AssetInput, rotation?: [number, number, number]) => ItemNode | null
+  create: (gridPosition: Vector3, asset: AssetInput, rotation?: [number, number, number], scale?: [number, number, number]) => ItemNode | null
   /** Take ownership of an existing scene node as the draft (for move mode). */
   adopt: (node: ItemNode) => void
   /** Commit the current draft. Create mode: delete+recreate. Move mode: update in place. */
@@ -40,13 +40,14 @@ export function useDraftNode(): DraftNodeHandle {
   const adoptedRef = useRef(false)
   const originalStateRef = useRef<OriginalState | null>(null)
 
-  const create = useCallback((gridPosition: Vector3, asset: AssetInput, rotation?: [number, number, number]): ItemNode | null => {
+  const create = useCallback((gridPosition: Vector3, asset: AssetInput, rotation?: [number, number, number], scale?: [number, number, number]): ItemNode | null => {
     const currentLevelId = useViewer.getState().selection.levelId
     if (!currentLevelId) return null
 
     const node = ItemNode.parse({
       position: [gridPosition.x, gridPosition.y, gridPosition.z],
       rotation: rotation ?? [0, 0, 0],
+      scale: scale ?? [1, 1, 1],
       name: asset.name,
       asset,
       parentId: currentLevelId,

apps/editor/components/tools/item/use-placement-coordinator.tsx

@@ -66,6 +66,8 @@ export interface PlacementCoordinatorConfig {
   onCommitted: () => boolean
   onCancel?: () => void
   initialState?: PlacementState
+  /** Scale to use when lazily creating a draft (e.g. for wall/ceiling duplicates). Defaults to [1,1,1]. */
+  defaultScale?: [number, number, number]
 }
 
 export function usePlacementCoordinator(config: PlacementCoordinatorConfig): React.ReactNode {
@@ -140,7 +142,7 @@ export function usePlacementCoordinator(config: PlacementCoordinatorConfig): Rea
       cursorGroupRef.current.position.set(...result.cursorPosition)
       cursorGroupRef.current.rotation.y = result.cursorRotationY
 
-      draftNode.create(gridPosition.current, asset, [0, result.cursorRotationY, 0])
+      draftNode.create(gridPosition.current, asset, [0, result.cursorRotationY, 0], configRef.current.defaultScale)
 
       const draft = draftNode.current
       if (draft) {