G1000: two-way sim sync, more PFD/MFD fidelity, authentic dialogs

Sync (FlyWithLua companions in plugins/ + server/fmssync.js):
- FMS flight-plan two-way sync (App <-> in-sim FMS) via fms-sync.lua
- G1000 UI-state publish (page/range/inset) via ui-sync.lua + CDI source,
  baro, map-range follow
- Terrain awareness: elevation grid probe (terrain-probe.lua) -> red/yellow
  MFD overlay vs aircraft altitude

PFD:
- AFCS mode annunciation bar from autopilot _status datarefs
- CDI source GPS/VLOC colouring, BRG1/BRG2 pointers + DME windows, marker beacons
- magenta speed/altitude trend vectors, selected-altitude alerting
- time-based (frame-rate-independent) smoothing for attitude/heading/tapes

MFD:
- nav data bar (DTK/ETE/active leg), airways overlay from earth_awy.dat,
  compass rose anchored to the ownship

Dialogs (NEAREST/FLIGHTPLAN/DIRECT-TO/PROCEDURES):
- flat, square, embedded G1000 look (no shadow/rounded/transparency)
- compact lower-right placement, no close X (softkey toggles), single window
- NEAREST 2-line entries (ILS/VFR, COM freq, runway length), PROC action menu

Service worker: network-first HTML so reloads pick up new builds (cache v2).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
2026-06-02 02:17:06 +02:00
parent 354ea5d44b
commit 38b048ad41
23 changed files with 1707 additions and 213 deletions
+60 -10
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@@ -11,9 +11,10 @@ import http from 'node:http';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { CONFIG, DATAREFS, WRITABLE_DATAREFS, COMMANDS } from './config.js';
import { loadNavData, search as navSearch, navStatus, nearest as navNearest, bbox as navBbox, runwaysNear as navRunways } from './navdata.js';
import { loadNavData, search as navSearch, navStatus, nearest as navNearest, bbox as navBbox, runwaysNear as navRunways, airwaysBbox as navAirways } from './navdata.js';
import { parseProcedures, procedureLegs as procLegs } from './procedures.js';
import * as fp from './flightplan.js';
import { pushToSim, startFmsSync, startTerrainSync } from './fmssync.js';
const __dirname = path.dirname(fileURLToPath(import.meta.url));
// WEB_DIST can be overridden (e.g. the desktop app points it at the cockpit
@@ -46,7 +47,9 @@ function broadcast(obj) {
}
function broadcastPlan() {
broadcast({ type: 'flightplan', data: fp.getPlan() });
const plan = fp.getPlan();
broadcast({ type: 'flightplan', data: plan });
pushToSim(plan); // hand the plan to the FlyWithLua FMS bridge (App → Sim)
}
async function fetchAllByName(resource, names) {
@@ -162,6 +165,11 @@ function handleClientMessage(msg) {
}
if (msg.type === 'fp_remove') { fp.removeWaypoint(msg.index); return broadcastPlan(); }
if (msg.type === 'fp_active') { fp.setActiveLeg(msg.index); return broadcastPlan(); }
if (msg.type === 'fp_load') {
const r = fp.loadFms(msg.name);
if (r.ok) return broadcastPlan();
return broadcast({ type: 'fp_export_result', ...r });
}
if (msg.type === 'fp_clear') { fp.setPlan({ waypoints: [] }); return broadcastPlan(); }
if (msg.type === 'fp_export') {
const r = fp.exportFms(msg.name || 'WEBFPL');
@@ -216,6 +224,10 @@ app.get('/api/nav/bbox', (req, res) =>
res.json(navBbox(+req.query.s, +req.query.w, +req.query.n, +req.query.e,
(req.query.types || 'apt,vor,ndb').split(','), +req.query.limit || 800))
);
// Airways (Victor/Jet routes) inside a map window — for the MFD AIRWAYS overlay.
app.get('/api/nav/airways', (req, res) =>
res.json(navAirways(+req.query.s, +req.query.w, +req.query.n, +req.query.e, +req.query.limit || 500))
);
// Runways near a point — drawn in the PFD synthetic-vision view.
app.get('/api/nav/runways', (req, res) =>
res.json(navRunways(+req.query.lat, +req.query.lon, +req.query.radius || 12))
@@ -227,6 +239,8 @@ app.get('/api/nav/procs', (req, res) => {
if (!p) return res.status(404).json({ error: 'no procedures for ' + req.query.icao });
res.json({ icao: p.icao, runways: p.runways, sids: p.sids, stars: p.stars, approaches: p.approaches });
});
// Saved flight plans (Output/FMS plans) — list for the FPL "load" picker.
app.get('/api/fms/list', (_req, res) => res.json(fp.listPlans()));
app.get('/api/nav/proc', (req, res) =>
res.json(procLegs(String(req.query.icao || ''), req.query.type, req.query.name, req.query.trans))
);
@@ -261,17 +275,23 @@ function startDemo() {
heading: 87, slip: 0.3, gForce: 1.04, oat: 9,
apState: (1 << 0) | (1 << 1) | (1 << 14), // FD + HDG + ALT
apEngaged: 1, apHdgBug: 90, apAltBug: 6000, apVsBug: 500, apSpdBug: 120,
// AFCS annunciation: AP on, HDG active + GPS armed (lateral), ALT active (vertical)
apMode: 2, hdgStatus: 2, gpssStatus: 1, altStatus: 2,
lat: 47.45, lon: -122.31, track: 90, groundspeed: 64, gpsDistNm: 18.4, gpsBearing: 92,
// radios (XP freq units: nav/com in 10 kHz, e.g. 11030 = 110.30)
nav1: 11030, nav1Sb: 11150, nav2: 11380, nav2Sb: 10890,
com1: 12190, com1Sb: 13000, com2: 12475, com2Sb: 12180,
// HSI / data fields
obsCrs: 175, hsiDef: -0.6, hsiToFrom: 1, navBearing: 168, gsDef: 0.7,
nav1Brg: 210, nav1Dme: 12.4, nav2Brg: 320, nav2Dme: 0, // BRG1 (NAV1 VOR/DME) demo
baro: 29.92, tas: 131, windSpd: 14, windDir: 240,
xpdrCode: 1200, xpdrMode: 2, fdPitch: 5, fdRoll: -10,
cdiSrc: Number(process.env.DEMO_CDI ?? 2), // 0 VLOC1, 1 VLOC2, 2 GPS
...(process.env.DEMO_RANGE ? { uiMapRange: Number(process.env.DEMO_RANGE) } : {}),
// engine strip (arrays, like the sim)
engRpm: [2410], fuelFlow: [0.0072], oilTemp: [88], oilPress: [52], egt: [720],
fuelQty: [60, 58], volts: [28.0], amps: [12],
fuelQty: [60, 58], volts: [process.env.DEMO_ALERT ? 23.4 : 28.0], amps: [12],
});
// a sample plan so the map/FMS show something in demo mode
fp.setPlan({ name: 'DEMO', waypoints: [
@@ -279,27 +299,57 @@ function startDemo() {
{ id: 'SEA', lat: 47.435, lon: -122.310, type: 'VOR', alt: 4000 },
{ id: 'KPDX', lat: 45.589, lon: -122.597, type: 'APT', alt: 1200 },
]});
pushToSim(fp.getPlan());
let t = 0;
const lat0 = 47.45, lon0 = -122.31, R = 0.05, w = 0.02; // gentle orbit around KSEA
const cosL = Math.cos(lat0 * Math.PI / 180);
let pLat = lat0, pLon = lon0;
setInterval(() => {
t += 0.1;
state.values.roll = -12 + Math.sin(t) * 4;
state.values.pitch = 4.5 + Math.cos(t * 0.7) * 1.5;
state.values.heading = (87 + Math.sin(t * 0.3) * 3 + 360) % 360;
state.values.track = state.values.heading;
state.values.altitude = 5500 + Math.sin(t * 0.5) * 40;
state.values.airspeed = 124 + Math.sin(t * 0.4) * 3;
// creep south-east so the aircraft visibly moves on the map
state.values.lat -= 0.0006;
state.values.lon -= 0.0009;
const newAlt = 5500 + Math.sin(t * 0.5) * 120;
state.values.vspeed = (newAlt - state.values.altitude) / (0.1 / 60); // fpm from Δalt/Δt
state.values.altitude = newAlt;
state.values.airspeed = 124 + Math.sin(t * 0.4) * 8;
// orbit so the aircraft visibly moves but stays near the demo flight plan
const lat = lat0 + Math.cos(t * w) * R;
const lon = lon0 + Math.sin(t * w) * R / cosL;
const trk = (Math.atan2((lon - pLon) * cosL, lat - pLat) * 180 / Math.PI + 360) % 360;
state.values.lat = lat; state.values.lon = lon;
state.values.track = trk; state.values.heading = trk;
pLat = lat; pLon = lon;
broadcast({ type: 'status', xpConnected: true });
broadcast({ type: 'values', data: state.values });
}, 100);
// synthetic terrain grid (a Cascades-style ridge rising eastward) so the MFD
// terrain-awareness colouring (yellow/red vs aircraft altitude) is visible
const emitTerrain = () => {
const lat = state.values.lat, lon = state.values.lon, alt = state.values.altitude;
const rows = 28, cols = 28, n = lat + 0.35, s = lat - 0.35, w = lon - 0.5, e = lon + 0.5;
const elev = [];
for (let r = 0; r < rows; r++) for (let c = 0; c < cols; c++) {
const fx = c / (cols - 1), fy = r / (rows - 1); // fx: 0 west → 1 east
let h = fx * 9000 - 1200 + Math.sin(fy * 6 + fx * 4) * 800 + Math.cos(fx * 9) * 400;
elev.push(Math.max(0, Math.round(h)));
}
broadcast({ type: 'terrain', data: { lat, lon, alt, n, s, w, e, rows, cols, elev } });
};
emitTerrain();
setInterval(emitTerrain, 1500);
}
server.listen(CONFIG.bridgePort, CONFIG.bridgeHost, () => {
log(`Bridge UI: http://${CONFIG.bridgeHost}:${CONFIG.bridgePort}`);
log(`On tablets: http://<this-PC-LAN-IP>:${CONFIG.bridgePort}`);
loadNavData(); // async; FMS resolves idents once ready
// FMS two-way sync (Sim → App): adopt plans built/edited in the real G1000
startFmsSync({
getPlan: () => fp.getPlan(),
onSimPlan: (waypoints) => { fp.setPlan({ name: 'ACTIVE', waypoints, activeLeg: 1 }); broadcastPlan(); },
});
// Terrain awareness grid (from the FlyWithLua terrain probe) → MFD colouring
startTerrainSync((t) => broadcast({ type: 'terrain', data: t }));
if (process.env.DEMO) startDemo();
else connectXPlane();
});
+45
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@@ -60,6 +60,25 @@ export const DATAREFS = {
hsiToFrom: 'sim/cockpit2/radios/indicators/hsi_flag_from_to_pilot',
navBearing: 'sim/cockpit2/radios/indicators/hsi_bearing_deg_mag_pilot',
// --- bearing pointers (BRG1/BRG2) + DME + marker beacons ---
nav1Brg: 'sim/cockpit2/radios/indicators/nav1_bearing_deg_mag',
nav2Brg: 'sim/cockpit2/radios/indicators/nav2_bearing_deg_mag',
nav1Dme: 'sim/cockpit2/radios/indicators/nav1_dme_distance_nm',
nav2Dme: 'sim/cockpit2/radios/indicators/nav2_dme_distance_nm',
mkrOuter: 'sim/cockpit2/radios/indicators/outer_marker_lit',
mkrMiddle: 'sim/cockpit2/radios/indicators/middle_marker_lit',
mkrInner: 'sim/cockpit2/radios/indicators/inner_marker_lit',
// --- G1000 UI state (for display sync with the in-sim G1000) ---
// CDI/HSI source: 0 = NAV1/VLOC1, 1 = NAV2/VLOC2, 2 = GPS (standard dataref).
cdiSrc: 'sim/cockpit2/radios/actuators/HSI_source_select_pilot',
// The rest are G1000-internal, so the FlyWithLua companion (ui-sync.lua)
// publishes them as custom datarefs. Absent until the plugin runs -> the web
// G1000 just keeps its own local UI state (graceful).
uiMfdPage: 'glasscockpit/ui/mfd_page', // 0 map, 1 fpl, 2 nrst
uiMapRange: 'glasscockpit/ui/map_range_nm', // active map range, NM
uiInset: 'glasscockpit/ui/inset', // PFD inset map on/off (0/1)
// --- G1000 PFD: data fields ---
baro: 'sim/cockpit2/gauges/actuators/barometer_setting_in_hg_pilot',
tas: 'sim/cockpit2/gauges/indicators/true_airspeed_kts_pilot',
@@ -88,6 +107,21 @@ export const DATAREFS = {
apSpdBug: 'sim/cockpit2/autopilot/airspeed_dial_kts_mach',
apEngaged: 'sim/cockpit2/autopilot/servos_on',
navHdef: 'sim/cockpit2/radios/indicators/hsi_relative_bearing_vor_pilot',
// --- AFCS mode annunciation (the green/white mode strip on a real G1000) ---
// X-Plane's per-mode status datarefs: 0 = off, 1 = armed, 2 = active/captured.
// These mean the AFCS bar mirrors the sim exactly, no Lua needed.
apMode: 'sim/cockpit2/autopilot/autopilot_mode', // 0 off, 1 FD, 2 AP
hdgStatus: 'sim/cockpit2/autopilot/hdg_status',
navStatus: 'sim/cockpit2/autopilot/nav_status',
gpssStatus: 'sim/cockpit2/autopilot/gpss_status',
aprStatus: 'sim/cockpit2/autopilot/approach_status',
bcStatus: 'sim/cockpit2/autopilot/backcourse_status',
altStatus: 'sim/cockpit2/autopilot/alt_hold_status',
vsStatus: 'sim/cockpit2/autopilot/vvi_status',
flcStatus: 'sim/cockpit2/autopilot/speed_status',
gsStatus: 'sim/cockpit2/autopilot/glideslope_status',
vnavStatus: 'sim/cockpit2/autopilot/vnav_status',
};
// Datarefs the frontend may WRITE (e.g. turning the heading bug knob).
@@ -121,6 +155,17 @@ export const COMMANDS = {
xpdrIdent: 'sim/transponder/transponder_ident',
};
// Per-radio standby tuning (coarse = MHz, fine = kHz) + active/standby flip.
// These work regardless of the dataref's frequency units, so the web tuner just
// fires them — no risky raw frequency writes.
for (const r of ['nav1', 'nav2', 'com1', 'com2']) {
COMMANDS[`${r}CoarseUp`] = `sim/radios/stby_${r}_coarse_up`;
COMMANDS[`${r}CoarseDown`] = `sim/radios/stby_${r}_coarse_down`;
COMMANDS[`${r}FineUp`] = `sim/radios/stby_${r}_fine_up`;
COMMANDS[`${r}FineDown`] = `sim/radios/stby_${r}_fine_down`;
COMMANDS[`${r}Swap`] = `sim/radios/${r}_standby_flip`;
}
// Every clickable G1000 bezel control maps to a real X-Plane command. The PFD
// is unit n1, the MFD is unit n3 (the default C172 layout). Aliases are
// prefixed pfd_/mfd_ so the frontend just says e.g. command('mfd_fpl').
+40 -3
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@@ -87,14 +87,51 @@ export function exportFms(name = 'WEBFPL') {
}
const content = lines.join('\n') + '\n';
const root = xplaneRoot();
const dir = root ? path.join(root, 'Output', 'FMS plans') : path.join(process.cwd(), 'fms-out');
const dir = fmsDir();
try {
fs.mkdirSync(dir, { recursive: true });
const file = path.join(dir, `${name}.fms`);
fs.writeFileSync(file, content);
return { ok: true, file, intoXplane: !!root };
return { ok: true, file, intoXplane: !!xplaneRoot() };
} catch (e) {
return { ok: false, error: e.message };
}
}
// ---- load saved X-Plane .fms plans (Output/FMS plans) ----
function fmsDir() {
const root = xplaneRoot();
return root ? path.join(root, 'Output', 'FMS plans') : path.join(process.cwd(), 'fms-out');
}
const FMS_TYPE = { 1: 'APT', 2: 'NDB', 3: 'VOR', 11: 'WPT', 28: 'USR' };
// List the names of every saved .fms plan (X-Plane's own + our exports).
export function listPlans() {
try {
return fs.readdirSync(fmsDir())
.filter((f) => f.toLowerCase().endsWith('.fms'))
.map((f) => f.replace(/\.fms$/i, ''))
.sort((a, b) => a.localeCompare(b));
} catch { return []; }
}
// Parse a saved .fms (v1100/v3) into our waypoints and make it the active plan.
export function loadFms(name) {
const safe = String(name || '').replace(/[^\w .+-]/g, '');
const file = path.join(fmsDir(), `${safe}.fms`);
if (!fs.existsSync(file)) return { ok: false, error: `not found: ${safe}` };
const wps = [];
for (const raw of fs.readFileSync(file, 'utf8').split(/\r?\n/)) {
const p = raw.trim().split(/\s+/);
// waypoint rows start with a numeric type code: <type> <ident> <alt> <lat> <lon>
if (p.length >= 5 && /^\d+$/.test(p[0]) && p[0] !== '1100') {
const lat = parseFloat(p[3]), lon = parseFloat(p[4]), alt = parseFloat(p[2]);
if (isFinite(lat) && isFinite(lon)) {
wps.push({ id: p[1], lat, lon, type: FMS_TYPE[+p[0]] || 'WPT', alt: alt > 0 ? Math.round(alt) : null });
}
}
}
if (wps.length < 1) return { ok: false, error: 'no waypoints in file' };
setPlan({ name: safe.toUpperCase(), waypoints: wps, activeLeg: 1 });
return { ok: true, plan, count: wps.length };
}
+85
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@@ -0,0 +1,85 @@
// Two-way flight-plan sync with X-Plane's in-sim FMS, bridged by a FlyWithLua
// companion script (see plugins/fms-sync.lua). X-Plane's Web API can't inject a
// flight plan into the FMS, so the Lua script (which has the FMS SDK) does it.
//
// Channel = two text files in <X-Plane>/Output/fms-sync/ (bridge + Lua run on
// the same PC). We write to_sim.txt (our plan); Lua applies it to the FMS and
// writes from_sim.txt (the sim's plan); we adopt sim-side changes. A position
// signature (3-decimal lat/lon) de-dupes so the two sides never loop.
import fs from 'node:fs';
import path from 'node:path';
import { xplaneRoot } from './navdata.js';
function dir() {
const r = xplaneRoot();
return r ? path.join(r, 'Output', 'fms-sync') : path.join(process.cwd(), 'fms-sync');
}
const toSimFile = () => path.join(dir(), 'to_sim.txt');
const fromSimFile = () => path.join(dir(), 'from_sim.txt');
// loop-guard signature: rounded lat/lon list (idents/alt ignored, and coords
// from our navdata == X-Plane's, so it stays stable across the round-trip)
const sig = (wps) => (wps || []).map((w) => `${(+w.lat).toFixed(3)},${(+w.lon).toFixed(3)}`).join(';');
let lastSig = null;
function serialize(wps) {
const body = (wps || [])
.map((w) => `${(+w.lat).toFixed(6)} ${(+w.lon).toFixed(6)} ${Math.round(w.alt || 0)} ${w.id || 'WPT'} ${w.type || 'WPT'}`)
.join('\n');
return `# ${sig(wps)}\n${body}\n`; // first line = sig comment, then waypoints
}
function parse(txt) {
const wps = [];
for (const ln of (txt || '').split(/\r?\n/)) {
const t = ln.trim();
if (!t || t.startsWith('#')) continue; // skip sig/comment line
const p = t.split(/\s+/);
const lat = +p[0], lon = +p[1];
if (p.length >= 2 && isFinite(lat) && isFinite(lon) && Math.abs(lat) <= 90 && Math.abs(lon) <= 180) {
const alt = +p[2] || 0;
wps.push({ id: p[3] || 'WPT', lat, lon, type: p[4] || 'WPT', alt: alt > 0 ? alt : null });
}
}
return wps;
}
// our plan changed → hand it to the Lua script
export function pushToSim(plan) {
try {
fs.mkdirSync(dir(), { recursive: true });
fs.writeFileSync(toSimFile(), serialize(plan?.waypoints || []));
lastSig = sig(plan?.waypoints || []);
} catch { /* sim not local / no write access */ }
}
// Terrain elevation grid published by the FlyWithLua terrain probe
// (terrain.json in the sync dir). Polled and broadcast so the MFD can colour
// terrain awareness (red/yellow). Only re-broadcasts when it actually changes.
const terrainFile = () => path.join(dir(), 'terrain.json');
export function startTerrainSync(onTerrain, intervalMs = 1500) {
let lastMtime = 0;
setInterval(() => {
let st;
try { st = fs.statSync(terrainFile()); } catch { return; }
if (st.mtimeMs === lastMtime) return;
lastMtime = st.mtimeMs;
try {
const t = JSON.parse(fs.readFileSync(terrainFile(), 'utf8'));
if (t && Array.isArray(t.elev) && t.elev.length) onTerrain(t);
} catch { /* mid-write / malformed */ }
}, intervalMs);
}
// poll the Lua-written sim plan; adopt genuine sim-side changes
export function startFmsSync({ getPlan, onSimPlan }) {
pushToSim(getPlan());
setInterval(() => {
let txt;
try { txt = fs.readFileSync(fromSimFile(), 'utf8'); } catch { return; }
const wps = parse(txt);
const s = sig(wps);
if (wps.length && s && s !== lastSig) { lastSig = s; onSimPlan(wps); }
}, 1200);
}
+77 -3
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@@ -41,7 +41,10 @@ const airports = []; // { id, lat, lon, name, elev }
const navaids = []; // { id, lat, lon, type:'VOR'|'NDB', freq, name }
const fixCells = new Map(); // "ilat,ilon" -> [{ id, lat, lon, type:'FIX' }]
const rwyByApt = new Map(); // ICAO -> [{ n1, la1, lo1, n2, la2, lo2, w }] (runway ends + width m)
const state = { root: null, loaded: false, count: 0 };
const comByApt = new Map(); // ICAO -> { freq, label, prio } (best ATC/CTAF frequency)
const ilsApts = new Set(); // ICAOs that have an ILS/LOC approach (for NRST "ILS")
const awyCells = new Map(); // "ilat,ilon" (segment midpoint) -> [{ la1, lo1, la2, lo2, name }]
const state = { root: null, loaded: false, count: 0, awy: 0 };
function add(id, lat, lon, type) {
if (!id || !isFinite(lat) || !isFinite(lon)) return;
@@ -90,6 +93,11 @@ async function parseNav(file) {
if (!t || t === '99' || /^[IA]\b/.test(t) || /Version/.test(t)) continue;
const p = t.split(/\s+/);
const code = parseInt(p[0], 10);
if (code === 4 || code === 5) { // ILS/LOC localizer → airport has an ILS
const ic = (p[8] || '').toUpperCase();
if (ic && ic !== 'ENRT') ilsApts.add(ic);
continue;
}
if (code !== 2 && code !== 3) continue; // 2 = NDB, 3 = VOR/DME
const lat = parseFloat(p[1]), lon = parseFloat(p[2]), id = p[7];
const type = code === 2 ? 'NDB' : 'VOR';
@@ -128,10 +136,44 @@ async function parseAirports(file) {
}
} else if (!placed && icao && (code === 101 || code === 102)) { // water/heli pad
place(parseFloat(p[code === 101 ? 4 : 5]), parseFloat(p[code === 101 ? 5 : 6]));
} else if (icao && ((code >= 50 && code <= 56) || (code >= 1050 && code <= 1056))) {
// ATC / CTAF frequencies. Old codes 50-56, new 1050-1056. Freq is kHz
// (>100000) or MHz×100. Keep the most useful one (TWR > UNICOM > ATIS …).
const c = code > 1000 ? code - 1000 : code;
const raw = parseInt(p[1], 10);
if (isFinite(raw) && raw > 0) {
const mhz = raw > 100000 ? raw / 1000 : raw / 100;
const meta = { 54: ['TOWER', 5], 51: ['UNICOM', 4], 50: ['ATIS', 3], 53: ['GROUND', 2], 55: ['APP', 1], 56: ['DEP', 1], 52: ['CLNC', 1] }[c] || ['COM', 0];
const key = icao.toUpperCase(), prev = comByApt.get(key);
if (!prev || meta[1] > prev.prio) comByApt.set(key, { freq: mhz, label: meta[0], prio: meta[1] });
}
}
}
}
// Airways (earth_awy.dat): each row is a segment between two named waypoints.
// We resolve both endpoints to coordinates via the fix/navaid index (so this
// must run AFTER parseFixes/parseNav) and bucket segments by their midpoint
// cell for fast bbox queries — exactly like fixes.
async function parseAirways(file) {
if (!fs.existsSync(file)) return;
const rl = readline.createInterface({ input: fs.createReadStream(file), crlfDelay: Infinity });
for await (const line of rl) {
const t = line.trim();
if (!t || t === '99' || /^[IA]\b/.test(t) || /Version/.test(t)) continue;
const p = t.split(/\s+/);
if (p.length < 10) continue;
const a = index.get((p[0] || '').toUpperCase());
const b = index.get((p[3] || '').toUpperCase());
if (!a || !b) continue; // endpoint not in our database
const name = p[p.length - 1];
const k = `${Math.floor((a.lat + b.lat) / 2)},${Math.floor((a.lon + b.lon) / 2)}`;
let arr = awyCells.get(k); if (!arr) { arr = []; awyCells.set(k, arr); }
arr.push({ la1: a.lat, lo1: a.lon, la2: b.lat, lo2: b.lon, name });
state.awy++;
}
}
export async function loadNavData() {
const root = findRoot();
state.root = root;
@@ -147,6 +189,10 @@ export async function loadNavData() {
try {
await parseFixes(pick('earth_fix.dat'));
await parseNav(pick('earth_nav.dat'));
// airways need the fix/navaid index above; parse in the background.
parseAirways(pick('earth_awy.dat'))
.then(() => console.log(`navdata: airways done (${state.awy} segments)`))
.catch((e) => console.log('navdata: airway parse skipped:', e.message));
// apt.dat is large; parse the global airports file in the background.
parseAirports(path.join(root, 'Global Scenery', 'Global Airports', 'Earth nav data', 'apt.dat'))
.then(() => { state.count = index.size; console.log(`navdata: airports done (${index.size} total entries)`); })
@@ -178,13 +224,25 @@ export function search(q, limit = 20) {
// NEAREST: closest airports (default) or navaids to a point, with range/bearing.
export function nearest(lat, lon, { count = 15, type = 'apt' } = {}) {
if (!isFinite(lat) || !isFinite(lon)) return [];
const src = (type === 'vor' || type === 'ndb' || type === 'nav') ? navaids : airports;
const isApt = !(type === 'vor' || type === 'ndb' || type === 'nav');
const src = isApt ? airports : navaids;
return src
.filter((f) => (type === 'vor' || type === 'ndb') ? f.type.toLowerCase() === type : true)
.map((f) => ({ ...f, dist: distNm(lat, lon, f.lat, f.lon), brg: Math.round(bearingDeg(lat, lon, f.lat, f.lon)) }))
.sort((a, b) => a.dist - b.dist)
.slice(0, count)
.map((f) => ({ ...f, dist: +f.dist.toFixed(1) }));
.map((f) => {
const o = { ...f, dist: +f.dist.toFixed(1) };
if (isApt) { // runway length, COM freq, approach type
const rs = rwyByApt.get(f.id);
let ft = 0;
if (rs) for (const r of rs) ft = Math.max(ft, distNm(r.la1, r.lo1, r.la2, r.lo2) * 6076.12);
o.rwyFt = Math.round(ft);
o.com = comByApt.get(f.id) || null;
o.app = ilsApts.has(f.id) ? 'ILS' : 'VFR';
}
return o;
});
}
// BBOX: every feature inside a lat/lon window, for the moving map to draw.
@@ -205,6 +263,22 @@ export function bbox(s, w, n, e, types = ['apt', 'vor', 'ndb'], limit = 800) {
return out;
}
// BBOX airways: every segment touching a lat/lon window (scan the midpoint
// cells overlapping the box, ±1 to catch segments crossing the edge).
export function airwaysBbox(s, w, n, e, limit = 500) {
const out = [];
const inB = (la, lo) => la >= s && la <= n && lo >= w && lo <= e;
for (let la = Math.floor(s) - 1; la <= Math.floor(n) + 1; la++)
for (let lo = Math.floor(w) - 1; lo <= Math.floor(e) + 1; lo++) {
const arr = awyCells.get(`${la},${lo}`);
if (!arr) continue;
for (const sg of arr) {
if (inB(sg.la1, sg.lo1) || inB(sg.la2, sg.lo2)) { out.push(sg); if (out.length >= limit) return out; }
}
}
return out;
}
// Runways of every airport within radiusNm — for the PFD's synthetic-vision view.
export function runwaysNear(lat, lon, radiusNm = 12) {
if (!isFinite(lat) || !isFinite(lon)) return [];