jpmschweitzerandClaude Fable 5
2bac820c77
The asset-brief template (scope/visual-reference/naming/gen-path/ acceptance, one page) and five real briefs — station walls, rural walls, doors, floors, furniture/props — each citing its D-235 axis tokens and palette.md register rows (or the D-257 toon default), conventions.md naming/mask/footprint rules, and the image-gen -> glb-gen -> promotion path with concrete acceptance counts. Doors carry the negative no-state-frame-files constraint (runtime mechanism stays Phase 5); furniture/props' first acceptance is promoting the three unpromoted spike GLBs. deferred.md is the formal register for the T-1051 four (lamp posts, barns, TVs, billboards) + cars/Q-067, with rationale and revisit triggers — satisfying T-1051's own 'or record formal deferral' deliverable. Child stories under T-961 are created lead-side at merge. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
91 lines
4.1 KiB
Markdown
91 lines
4.1 KiB
Markdown
---
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title: "Asset Brief — Rural Walls"
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description: "Building-exterior wall models/textures for rural/vernacular settlement types — D-235 wall axis"
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type: design
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status: active
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ticket: ""
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decision_refs: [D-235, D-244, D-257]
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author: "Araminta"
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created: 2026-07-25
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updated: 2026-07-25
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---
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# Asset Brief — Rural Walls
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One page. Gates its child story — the story does not enter `in_progress`
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without this brief attached.
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---
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## 1. Scope
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Building-exterior **wall** surfaces for rural/vernacular/frontier settlement
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types — the D-235 `WallMaterial` axis tags a rural-type template's `allow`
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filter selects (`stone_wall`, `timber_wall`, `rammed_earth_wall`,
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`stucco_wall`, `brick_wall` — the "vernacular/agrarian" register). No prior
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art exists for this class beyond the T-961 epic text mention (2026-06-12
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audit matrix) — unlike `station-walls.md`'s sibling, this is a clean-slate
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brief. Out of scope: station/urban walls (`concrete_wall`, `steel_frame`,
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`glass_curtain_wall`, `composite_panel` — sibling brief), barns (a rural
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building *type*, not a wall-axis token — deferred, see `deferred.md`), doors,
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floors.
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## 2. Visual Reference
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`palette.md` §3.1 rows for `stone_wall`, `timber_wall`, `rammed_earth_wall`,
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`stucco_wall`, `brick_wall` — every one of these tags is explicitly warm-hued
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(warm grey-tan, warm mid-brown, ochre-to-umber banding, warm off-white sand,
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warm terracotta-to-ochre) and the table is explicit that `stone_wall` is
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D-235's flagship "gets it wrong if literal" case — **never render it cool
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grey**. This is the register where the "functional warmth" mood target
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(`palette.md` §4) reads most directly — rural walls are the class most likely
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to be mistaken for a generic cool-grey default if a generation pass isn't
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told otherwise. `generic_wall` (§3.5) is the shared fallback terminal with
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`station-walls.md` — one placeholder texture serves both siblings until
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specific tags ship.
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## 3. Naming
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Texture: `<object_tag>_<map_type>.png` per `conventions.md` §3 — e.g.
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`stone_wall_basecolor.png`, `stone_wall_normal.png`, `timber_wall_basecolor.png`,
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`rammed_earth_wall_basecolor.png`. If a standalone wall-segment model is
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produced (rural walls are more likely to need a discrete model than station
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walls, given rammed-earth's strong horizontal banding reads better as
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geometry+texture than texture-only), it follows §1's `<category>_<descriptor>
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.glb` (e.g. `wall_structural_timber.glb`) with the same `props`-category
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placement as its station sibling. No tint mask — material register (not
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player-favorite color) drives these hues.
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## 4. Generation Path
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Standard path: `/image-gen` → `/glb-gen` (Trellis) → Blender postprocess →
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`client/assets/models/props/` + `manifest.json`, OR the texture-only path
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(`/image-gen` concept, no Trellis step) landing in `textures.md` — same
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choice as `station-walls.md` §4, decided per-tag based on whether the
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material's character (rammed-earth banding, stone coursing) needs real
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geometry or reads fine as a flat PBR map. Concept prompts for this class
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should explicitly state the target hue family from §2 (warm, not cool-grey)
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since Gemini's default "concrete/stone" association skews cool without that
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steer.
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## 5. Acceptance
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3 starter assets enter `models.md`/`textures.md` + `manifest.json` at
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`planned`: (1) `stone_wall` texture — the flagship warm-hue worked example,
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highest risk of a cool-grey miss without explicit review; (2) `timber_wall`
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texture; (3) `rammed_earth_wall` texture (the banding signature makes it a
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good early test of whether the texture-only path is sufficient or a modeled
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relief is needed). `generic_wall` is shared with `station-walls.md` — do not
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duplicate it in this class's count; **milestone-0 IF Q-119 resolves yes**
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(not resolved here).
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---
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## Cross-References
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- `docs/assets/visual/conventions.md` §1, §3 — model naming, D-235-keyed texture naming
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- `docs/assets/visual/palette.md` §3.1, §4 — wall material register, "functional warmth" mood target
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- `docs/assets/visual/models.md`, `docs/assets/visual/textures.md` — target catalogs
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- `client/assets/models/manifest.json`
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- `docs/assets/briefs/station-walls.md` — sibling brief, shares `generic_wall` fallback
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