Measured in the source geometry (Art/blender/site/site-2026-11-06.blend, metres): at the player's street section the north sidewalk tops out at 1.58 m and the road at 1.45 m. The 380 cm that has driven every placement decision came from the UE mesh's bounding box, which spans 279 m of sloping street and takes the highest point anywhere - 2.2 m above the surface where the player stands. That is the float, quantified at last. Moving the invisible collision slab to a 158 cm top did not work: with an 8 cm slab the player fell to Z -4410, and with a 50 cm slab it fell to the same place, so the slab was not colliding at all after the change. I could not identify why within this pass, so the change is reverted and the 380 stopgap restored - verified again by trace (mesh=Cube at Z 380, actor Z 470). Recorded in TODO.md with the two numbers and the next step: find why the slab stops colliding when it moves down, then set it to 158 and the player start to 247.
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
0.1.0 is in progress. The workstation, engine, geo pipeline and project bootstrap are done and verified; a walkable DemoMap exists with terrain, street, sidewalks, kerbs and the hero façade placed from measured coordinates. Façades are still blockouts, and materials are flat colours — both are planned patches.
Current tasks are in TODO.md and the development plan is in ROADMAP.md; what was learned the hard way is in MEMORY.md.
Layout
| Path | Contents |
|---|---|
Game/ |
Unreal project, configuration, source, game-ready content |
Art/ |
Editable Blender sources, blockouts, terrain, street, hero façade, and a local (uncommitted) reference library |
Geo/ |
Source manifests, permitted geographic data, and every geographic tool |
Tools/ |
Unreal-side importers, level builders, and reference gathering |
Docs/ |
Setup, toolchain pins, build and content pipeline, licensing, release checks |
Screenshots/ |
Rendered review captures and their approval state |
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. Setup is in Docs/setup.md; building and the content pipeline are in Docs/build.md.
Documents
- TODO.md — living task list, source of truth for progress
- ROADMAP.md — development plan: milestone goals, scope, and release gates
- MEMORY.md — shared session memory: discoveries, traps, decisions
- AGENTS.md — contributor and agent rules
- PLAN.md — scope, stack, release policy, timeline
- Docs/toolchain.md · Docs/environment.md — pins and workstation audit
- Docs/build.md — fresh-checkout build and content pipeline
- Docs/release-checks.md — release gates
- Docs/licensing.md · 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.