# Tools

Repeatable import/export and processing helpers. Anything that was done twice by hand belongs here.

## Conventions

- One script, one job. No interactive prompts; every input is an argument.
- Each script documents its input format, output format, and the exact tool version it was tested with.
- Blender scripts run headless (`blender --background --python`), so they can be re-run for a regression check.
- No credentials, no absolute machine paths, no writes outside the project by default.
- A script that produces game content logs what it produced, so `Game/Content` can be audited against it.

## Helpers

- `render_screenshots.sh` — visual-review pipeline: rebuilds `/Game/Test/ReviewMap` from current content (`ue_build_review_map.py`), runs the game on it in `-game` mode, lets `AGigLineShotActor` (`Game/GigLine/Source/GigLine/`) capture the fixed camera list, and copies the PNGs into the gitignored `Screenshots/`. See `Screenshots/README.md`.
- `check-lfs.sh` — repository guard: fails if `git-lfs` or the `lfs` filter is missing, or if an LFS-tracked file was committed as a plain blob.
- Geographic tools and their shared helpers live in `Geo/tools/` (see `Geo/README.md`).
- Blender-side builders that turn geo data into meshes live beside their output: `Art/blender/terrain/terrain_from_dem.py`, `Art/blender/street/street_mesh.py`, `Art/blender/site/site_assembly.py`, `Art/blender/blockout/blosm_blockout.py`. They import their helpers from `Geo/tools/osm_common.py`, which is also the only place that converts metres to Unreal centimetres.
- `sibling_asset_audit.py` — reads the sibling project's prop library straight from GLB headers and writes `Art/props/reuse-manifest.json`; copies nothing.
- `page_image_fetch.py` — resolves a web page's `og:image` and downloads it, with page URL and hash in a local sidecar. Works for Flickr, Commons file pages, and most photo blogs.
- `commons_fetch.py` — Wikimedia Commons reference fetcher. Search, exact `File:` titles, or a whole Commons category (`--category`), thumbnails, provenance `sidecar.json` per folder. Wikimedia throttles `upload.wikimedia.org` (HTTP 429), so keep batches to six or fewer files and pass `--delay 3`; a throttled file is skipped and recorded rather than aborting the run. Writes only into the gitignored `Art/reference/`; reference images are never committed.

## Planned helpers
- Blender export preset runner (named presets, metric scale assertion)
- OSM extract fetch and manifest writer (records date, bounds, checksum)
- QGIS processing steps as batch scripts, so the geo cleanup is reproducible rather than GUI-only