zwitschi
ece48649f5
Tools/terrain_from_dem.py builds a 191x106 grid at 2 m over the block, Z being NAVD88 minus the origin ground. Building footprints from the OSM extract are cut out so rooftops never become terrain (72 footprints, 6310 cells). Spot checks reproduce the measured profile: origin 0.00, Orange Dr +3.39, south gutter +0.93, crown +1.38, north sidewalk +1.43. Blosm projects with a sphere, not an ellipsoid, so its frame was ~0.4% oversized and rotated by meridian convergence: about 2 m at the theatre. The blockout now fits a six-parameter affine into EPSG:26911 on five control points (0.0 cm residual) and transforms root objects only, since children inherit and double transforming them read as a 2 m placement error.
Gig Line
A Linux-first Unreal Engine game about walking and driving through a real city. The first release, 0.1.0, is a walkable exterior demo around 6840 Hollywood Blvd / El Capitan Entertainment Centre, covering the south-side frontage between Highland Avenue and Orange Drive plus the north-side frontage within 50 m of the boulevard.
Status
Pre-production. Workstation setup and repository scaffolding are in progress; no engine, content, or geographic data is committed yet. Current state is tracked in ROADMAP.md, and the per-task setup state in Docs/setup.md.
Layout
| Path | Contents |
|---|---|
Game/ |
Unreal project, configuration, source, game-ready content |
Art/ |
Editable Blender files and original textures |
Geo/ |
Source manifests, permitted geographic data, processing scripts |
Tools/ |
Repeatable import/export helpers |
Docs/ |
Setup, toolchain pins, licensing, release checks |
Getting started
git lfs install # required: content, images, audio, and geo files are LFS-tracked
git lfs pull
Tools/check-lfs.sh # verifies the lfs filter is active and files are stored as pointers
The engine is installed outside the repository and pinned in Docs/toolchain.md. The full procedure is in Docs/setup.md.
Documents
- ROADMAP.md — living task list, source of truth for progress
- PLAN.md — scope, stack, release policy, timeline
- AGENTS.md — contributor and agent rules
- Docs/toolchain.md — pinned versions
- Docs/environment.md — workstation audit
- Docs/release-checks.md — release gate definitions
- Docs/licensing.md and THIRD_PARTY_NOTICES.md — licensing
- CHANGELOG.md — release history
Licensing
Code licence is an open decision (MIT proposed). Engine, art, and geographic data are licensed separately; see Docs/licensing.md. OSM-derived output carries "© OpenStreetMap contributors".