feat(packer): 提取可交互 NPC 的地图定位并独立存储

将场景数据生成时对 objectType 的判定粒度细化。保留对普通怪物的忽略过滤，对于包含 baseIsMonsters 标识的命名 NPC 记录，将类型标识拆分为 'npc' 并单独放入 scene.json 的 npcs 数组中打包。

scripts/pack-act-assets.ts

@@ -344,14 +344,19 @@ for (const row of objectsTable.rows) {
 
 /** Object members grouped by token and mode, built once. */
 const objectMembers = new Map<string, Map<string, string[]>>()
+const monsterMembers = new Map<string, Map<string, string[]>>()
 for (const name of allNames) {
-  if (!name.toLowerCase().startsWith(OBJECT_PREFIX.toLowerCase())) continue
-  const rest = name.slice(OBJECT_PREFIX.length).split('\\')
+  const isObj = name.toLowerCase().startsWith(OBJECT_PREFIX.toLowerCase())
+  const isMon = name.toLowerCase().startsWith('data\\global\\monsters\\')
+  if (!isObj && !isMon) continue
+  const prefixLen = isObj ? OBJECT_PREFIX.length : 22 // 'data\\global\\monsters\\'.length
+  const rest = name.slice(prefixLen).split('\\')
   if (rest.length < 3) continue
   const token = (rest[0] ?? '').toUpperCase()
   const mode = (rest[1] ?? '').toLowerCase()
-  if (!objectMembers.has(token)) objectMembers.set(token, new Map())
-  const modes = objectMembers.get(token)!
+  const map = isObj ? objectMembers : monsterMembers
+  if (!map.has(token)) map.set(token, new Map())
+  const modes = map.get(token)!
   if (!modes.has(mode)) modes.set(mode, [])
   modes.get(mode)!.push(name)
 }
@@ -378,8 +383,9 @@ function compRank(path: string): number {
  * @param modeToken - animation mode token the engine places the object in (`NU`/`OP`/…).
  * @returns the member name and how many candidates there were.
  */
-function pickObjectMember(token: string, modeToken: string): { member: string; candidates: number } | null {
-  const dirs = objectMembers.get(token)
+function pickObjectMember(token: string, modeToken: string, baseIsMonsters = false): { member: string; candidates: number } | null {
+  const map = baseIsMonsters ? monsterMembers : objectMembers
+  const dirs = map.get(token)
   if (dirs === undefined) return null
   const all = [...dirs.values()].flat().filter(name => {
     const lower = name.toLowerCase()
@@ -641,6 +647,7 @@ async function bakeDs1Variant(
 
   const objectPages = new PageBuilder(palette)
   const objects: unknown[] = []
+  const npcs: unknown[] = []
   const missingObjects: string[] = []
   let objectsWithArt = 0
   const placementByMember = new Map<string, { placement: Placement; offsetX: number; offsetY: number }>()
@@ -655,7 +662,7 @@ async function bakeDs1Variant(
     }
     if (resolved.kind === 'monster') continue
     const row = resolved.row
-    const pick = resolved.token === '' ? null : pickObjectMember(resolved.token, resolved.mode)
+    const pick = resolved.token === '' ? null : pickObjectMember(resolved.token, resolved.mode, resolved.kind === 'npc')
     const orthoX = (object.x - object.y) * ORTHO_SUB_TILE_WIDTH + scene.originX
     const orthoY = (object.x + object.y) * ORTHO_SUB_TILE_HEIGHT + scene.originY
 
@@ -723,7 +730,8 @@ async function bakeDs1Variant(
       }
     }
 
-    objects.push({
+    const list = resolved.kind === 'npc' ? npcs : objects
+    list.push({
       id: object.id,
       type: object.type,
       name: row?.name ?? resolved.token,
@@ -793,6 +801,7 @@ async function bakeDs1Variant(
     walls: scene.walls.map(draw => [draw.frameIndex, draw.x, draw.y, draw.cellX, draw.cellY]),
     roofs: scene.roofs.map(draw => [draw.frameIndex, draw.x, draw.y, draw.cellX, draw.cellY]),
     objects,
+    npcs,
     collision: { width: scene.gridWidth, height: scene.gridHeight, runs },
     spawn: spawn === null ? null : [Math.round(spawn.x), Math.round(spawn.y)],
     stats: {
@@ -804,6 +813,7 @@ async function bakeDs1Variant(
       missingRefs: scene.missingRefs,
       walkable: 1 - [...scene.blocked].reduce((sum, value) => sum + value, 0) / scene.blocked.length,
       objects: objects.length,
+      npcs: npcs.length,
       objectsWithArt,
       objectsUnresolved: missingObjects,
       objectsArtPending: (objects as any[]).filter(o => o.member !== null && o.frame === null).length,
@@ -840,6 +850,7 @@ async function bakeDs1Variant(
     cells: `${String(scene.cellsX)}x${String(scene.cellsY)}`,
     frames: scene.frames.length,
     objects: objects.length,
+    npcs: npcs.length,
     pages: pageFiles.length,
     objectPages: objectFiles.length,
     missingTiles: scene.missingTiles,