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Turn placed BSV blocks into a contiguous, deterministic 2-D biome map — the same world for every player, with no map server.

Install

Example

import { spiralCells, makeGrid } from "@metanet-games/chainscape";

// cells: [{ height, hash }, …] — a window of BSV blocks
const pos = spiralCells(cells.length);           // Ulam-spiral placement
const cellMap = new Map(cells.map((c, i) =>
  [pos[i][0] + "," + pos[i][1], { ...c, gx: pos[i][0], gy: pos[i][1] }]));

const gridFor = makeGrid(cellMap, new Map());
const biomes = gridFor(cells[0]);                // N×N grid of biome indices

Plug it into your game

Feed it a window of blocks and it paints a seamless world that's identical for everyone. Appending a new block never rewrites terrain already placed, so the map just grows outward as the chain does. You decide what each biome index means — walkable, minable, a spawn point.