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WorldSeed v0.9.0 — Interoperable City Export

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WorldSeed v0.9.0 — Interoperable City Export

WorldSeed v0.9.0 turns the project from a browser city demo into a more explicit open interchange layer for game-ready geospatial worlds.

Highlights

  • Versioned export contract — JSON Schema v1 for metadata, semantic objects, road graphs, spawn points, and drive routes.
  • Schemas ship with every starter kit — exported worldseed.json links to the exact relative schema files included in the ZIP.
  • Standalone consumer example — examples/export-consumer/ imports a WorldSeed ZIP without using WorldSeed runtime code, then renders the city, road graph, spawns, and route.
  • Dense-city road quality — terrain-following junction patches, trimmed road mouths, curved sidewalk corners, and per-arm crosswalks reduce overlap and z-fighting at intersections such as Shibuya.
  • Drive and Drone reliability — collision-safe vehicle spawns, dense-city Drone clearance, and improved iPhone landscape HUD layout.
  • Export geometry reliability — normalized geometry batching removes mixed-attribute merge failures.
  • Terrain-following road detail — roads, sidewalks, and markings are sampled in shorter terrain-aware segments instead of long planar strips.
  • OpenStreetMap fallback hardening — configurable Overpass endpoint plus POST/GET retry behavior.

Export contract

The Three.js kit contains:

  • city.glb
  • terrain.glb
  • colliders.glb
  • worldseed.json
  • worldseed-objects.json
  • road-graph.json
  • spawn-points.json
  • drive-route.json
  • schemas/v1/*.schema.json
  • ATTRIBUTION.md
  • a minimal Vite + Three.js viewer

See docs/SCHEMA_VERSIONING.md for compatibility rules.

For downstream developers

The project now maintains ADOPTERS.md and an Integration report issue template. Public integrations are listed only after a reproducible artifact is provided; the project's own consumer example is not counted as external adoption.

Status

WorldSeed remains early-stage. Provider availability, dense-city visual fidelity, and export ergonomics will continue to evolve. Schema-major changes will use a new contract family rather than silently changing v1 semantics.

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