31 lines
3.0 KiB
Markdown
31 lines
3.0 KiB
Markdown
# Licensing
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Licensing is tracked in four separate layers. Do not merge them; each has different obligations.
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| Layer | What it covers | Status |
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| --- | --- | --- |
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| Project code | Project-owned code in `Game/Source`, `Tools/`, and `Geo/` scripts | [CC0 1.0](../LICENSE), chosen by the project owner. |
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| Project art | Blender sources, baked textures, exported meshes | Project-owned art is [CC0 1.0](../LICENSE); third-party contributions retain their own terms. See the asset notices. |
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| Engine | Unreal Engine | Proprietary / source-available. Not redistributable as engine source. Distribution follows Epic's terms. |
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| Geographic data | OSM extract, elevation data | ODbL and the elevation provider's own licence. Attribution and share-alike review required before distributing a derived database. |
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Project-owned documentation is also dedicated under [CC0 1.0](../LICENSE). Third-party material retains its own terms.
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## Rules
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1. An asset whose licence cannot be verified does not get committed. Record it as unresolved in [THIRD_PARTY_NOTICES.md](../THIRD_PARTY_NOTICES.md) and replace it with a redistributable asset before the release it would ship in.
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2. Reference photography is dev-only material and is **never committed**. It lives in the gitignored `Art/reference/` tree, is used for internal, private development only, and is not shipped or baked into shipped textures. Local reference notes are also excluded from version control.
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3. OSM is layout data only. Do not treat it as authoritative for façades, heights, or pavement detail, and do not import it as a texture or panorama source.
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4. Never use extracted Google imagery, Street View, or geometry. No exception.
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5. Attribution: "© OpenStreetMap contributors" with a link to <https://www.openstreetmap.org/copyright> appears in the shipped build's UI (a `0.1.0` release check) and in the notices.
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6. Credentials, licence keys, and account tokens never enter the repository. Engine licence acceptance is recorded by date and account email only.
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## Open decisions
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- **ODbL posture.** Decide whether distributed builds contain a derived geographic database (a modified OSM extract) or only rendered geometry. The answer changes the share-alike obligations for the shipped product. Record the decision here and in the release notes.
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- **Reference photography retention.** Decided 2026-11-06: reference images are **not** committed. Licensing is not the gate for local, private development use, so images are simply kept out of the repository (`Art/reference/` is gitignored) and their provenance stays in the local sidecars. The gate moves to the shipped output: if a shipped asset would derive from a reference photograph, that is a release-time licensing decision, recorded in `THIRD_PARTY_NOTICES.md` before the asset ships.
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## Provenance sources
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Primary record: [THIRD_PARTY_NOTICES.md](../THIRD_PARTY_NOTICES.md) for anything committed or shipped. Evidence notes and per-file provenance for local reference images remain private and untracked.
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