discord-mudlet-map/dist/prepare-map.js

This little library helps with Discord bot configuration to provide small Mudlet map fragment images with given location.

import fs from "fs";
import path from "path";
import { MudletMapReader } from "mudlet-map-binary-reader";
import { MapReader } from "mudlet-map-renderer";
const downloadDir = "downloads";
function ensureDirectoryExists(dirPath) {
    return new Promise((resolve, reject) => {
        fs.access(dirPath, (err) => {
            if (err) {
                fs.mkdir(dirPath, { recursive: true }, (mkErr) => {
                    if (mkErr)
                        reject(mkErr);
                    else
                        resolve();
                });
            }
            else {
                resolve();
            }
        });
    });
}
export async function prepareMap(key, provider) {
    const dir = path.join(downloadDir, key);
    await ensureDirectoryExists(dir);
    await provider(fs.createWriteStream(path.join(dir, "map.dat")));
    const map = MudletMapReader.read(path.join(dir, "map.dat"));
    const { mapData, colors } = MudletMapReader.export(map, `${dir}/`);
    // mudlet-map-binary-reader drops fields the renderer reads (area/x/y/z,
    // doors, weight, stubs). Merge them back from the raw map model.
    for (const area of mapData) {
        const areaId = parseInt(area.areaId, 10);
        for (const room of area.rooms) {
            const source = map.rooms[room.id];
            if (!source)
                continue;
            const target = room;
            target.area = areaId;
            target.x = source.x;
            target.y = source.y;
            target.z = source.z;
            target.doors = source.doors ?? {};
            target.weight = source.weight;
            target.stubs = source.stubs ?? [];
            target.exitWeights = source.exitWeights ?? {};
            target.name = source.name;
            target.userData = source.userData ?? {};
        }
    }
    return new MapReader(mapData, colors);
}
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