# wgt01 — Build Status & Notes

Progress log for the **Westgate Urban Foundation MVP** tileset (prefix `twu01`).
Spec: [KICKOFF.md](KICKOFF.md). How NWN needs things shaped: [../AGENTS.md](../AGENTS.md).

_Last updated: 2026-07-04._

---

## What exists — the generator kit (`generator/`)

One source of truth (`tiles.py`) feeds four tools; the two NWN emitters need no
Blender, so they're directly testable.

| File | Role | Needs Blender? |
|---|---|---|
| `tiles.py` | **Single source of truth**: 40-tile table, 12 materials, the 12×12 test map, and all pure derivations (paint / height / walkmesh quads / `.set` corner+crosser mapping). `PREFIX=twu01`. | no |
| `build.py` | Builds `westgate_urban_foundation_mvp.blend` — 40 tile collections (`VIS_`/`WOK_`/`BLOCK_` + edge custom props), `TILE_EDGE_METADATA` text block, `PREVIEW_tile_library_grid`, `PREVIEW_12x12_test_district`. | yes (4.0.2) |
| `export_mdl.py` | Real NWN export via **Neverblender** → 40 `.mdl` + 40 `.wok` (AuroraBase `tile`/`dummy`, `trimesh`, one `aabb` walkmesh; correct surfacemats). | yes + addon |
| `make_wok.py` | Pure-Python ASCII `.wok` emitter (verts+faces+surfacemat+AABB tree). Fallback when Neverblender absent — format **validated identical** to Neverblender's output. | no |
| `make_set.py` | First-pass `twu01.set` (INI, **CRLF**) from the tile grammar. | no |

`flake.nix` exposes these as apps + a dev shell (pinned **Blender 4.0.2**,
`neverwinter-nim`, `cleanmodels`).

## Pipeline (commands)

```sh
cd wgt01
nix run .#build  -- out.blend          # 1. Blender tile library
nix run .#export -- out.blend mdl/     # 2. real .mdl + .wok (Neverblender)
nix run .#set    -- twu01.set          # 3. first-pass .set (CRLF)
# nix run .#wok  -- wok/               # ASCII .wok fallback only (export_mdl preferred)
```

## Verified (2026-07-04)

- **build**: 40 collections, 144/144 district cells placed, 0 skipped, 12 materials.
- **export**: 40 `.mdl` + 40 `.wok`. Surfacemats correct — CP1 all `wok_Stone`(4),
  CN1 all `wok_Nonwalk`(7), BR_1/CE_S walkable+blocker mixed. `.mdl` has
  `newmodel twu01_cp1`, `classification TILE`, AuroraBase name == resref.
- **Neverblender**: enabled + working **headless** via the flake's
  `blender-4.0.2 --background`, reading `~/.config/blender/4.0` (same config as
  the interactive session). Surfacemat = walkmesh face **material slot index**
  after `nvb_utils.create_wok_materials(mesh)` — not the material name.
- **`.set`**: CRLF (1224/1224 lines), 40 tiles, 3 terrains (`cobble`/`raised`/
  `canal`), 2 crossers (`ramp`/`canal_edge`). Corners/heights derive from each
  tile's N/E/S/W edge grammar; ramp N-corners → height 1, canal edges →
  `canal_edge` crosser, non-walkable tiles → `PathNode=N`.

## Testing in the toolset — no `.hak` needed

The toolset reads loose files from **`~/Documents/Neverwinter Nights/development/`**
(confirmed present). One command does build → export → `.set` → stage:

```sh
cd wgt01
nix run .#dev-install          # -> build/ (inspectable) + installs 40 .mdl/.wok + twu01.set into development/
```

It replaces only the `twu01*` files in `development/` (leaves everything else
alone) and keeps the intermediate outputs in `./build/` for inspection. Then in
the toolset: create a small area using the `twu01` tileset, place tiles, walk-test
pathing/heights. (Packing a `.hak` with `nwn_erf` is deferred until the set is
validated.)

## First-pass caveats — tune before shipping

- **PathNode** is a placeholder (`A` walkable / `N` non-walkable) — verify creature
  routing per tile shape in the toolset; real pathnode letters matter.
- **No `.itp` palette** yet — tiles may not appear in the toolset palette tree
  until one is authored (GFF; `neverwinter-nim`'s `nwn_gff`). The `.set` still
  loads for area creation.
- **No minimaps** — `ImageMap2D` refs exist in the `.set` but the `.tga`s don't
  (skipped by decision; Westgate doesn't use them).
- **Substitutions**: `RA_C` = straight-ramp geometry; `STA` = smooth ramp WOK
  proxy over stepped visual; `SW_C/T/X/E` share the straight-sidewalk visual.
- `MAT_void_black` is defined but currently unpainted (11/12 materials realised).
- Corner terrain is a heuristic from edges — hand-tune adjacency in the toolset.

## Git

Branch **`wgt01-tileset-kit`** (`main` still unborn — `git branch -f main
wgt01-tileset-kit` to promote). Commits:
- `60af184` — build guide + 40-tile generator kit
- `1284f15` — real `.mdl`/`.wok` export via Neverblender

## Next passes

1. Author `twu01palstd.itp` palette so tiles show in the toolset palette tree.
2. Walk-test in the toolset (`nix run .#dev-install`) → tune PathNodes, crossers,
   corner terrains.
3. Pack `.hak` (`nwn_erf`) once validated.