59 lines
2.3 KiB
TypeScript
59 lines
2.3 KiB
TypeScript
import { useFrame } from '@react-three/fiber'
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import type * as THREE from 'three'
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import { sceneRegistry } from '../../hooks/scene-registry/scene-registry'
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import { spatialGridManager } from '../../hooks/spatial-grid/spatial-grid-manager'
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import { resolveLevelId } from '../../hooks/spatial-grid/spatial-grid-sync'
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import { type AnyNodeId, getScaledDimensions, type ItemNode, type WallNode } from '../../schema'
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import useScene from '../../store/use-scene'
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// ============================================================================
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// ITEM SYSTEM
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// ============================================================================
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export const ItemSystem = () => {
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const dirtyNodes = useScene((state) => state.dirtyNodes)
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const clearDirty = useScene((state) => state.clearDirty)
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useFrame(() => {
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if (dirtyNodes.size === 0) return
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const nodes = useScene.getState().nodes
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dirtyNodes.forEach((id) => {
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const node = nodes[id]
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if (!node || node.type !== 'item') return
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const item = node as ItemNode
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const mesh = sceneRegistry.nodes.get(id) as THREE.Object3D
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if (!mesh) return
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if (item.asset.attachTo === 'wall-side') {
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// Wall-attached item: offset Z by half the parent wall's thickness
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const parentWall = item.parentId ? nodes[item.parentId as AnyNodeId] : undefined
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if (parentWall && parentWall.type === 'wall') {
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const wallThickness = (parentWall as WallNode).thickness ?? 0.1
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const side = item.side === 'front' ? 1 : -1
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mesh.position.z = (wallThickness / 2) * side
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}
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} else if (!item.asset.attachTo) {
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// If parented to another item (surface placement), R3F handles positioning via the hierarchy
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const parentNode = item.parentId ? nodes[item.parentId as AnyNodeId] : undefined
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if (parentNode?.type !== 'item') {
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// Floor item: elevate by slab height (using full footprint overlap)
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const levelId = resolveLevelId(item, nodes)
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const slabElevation = spatialGridManager.getSlabElevationForItem(
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levelId,
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item.position,
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getScaledDimensions(item),
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item.rotation,
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)
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mesh.position.y = slabElevation + item.position[1]
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}
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}
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clearDirty(id as AnyNodeId)
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})
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}, 2)
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return null
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}
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