Flight queue UI: dotted map line, left-pane Queue sub-section, e2e (ISS-043 part 2)

lib/mapData.ts

@@ -1,4 +1,4 @@
-import type { StateSnapshot } from './game/state';
+import type { PlaneState, StateSnapshot } from './game/state';
 import { formatFuel } from './format';
 import { positionAt } from './sim/movement';
 
@@ -164,3 +164,31 @@ export function routesGeoJson(
   }
   return { type: 'FeatureCollection', features };
 }
+
+// ISS-043 (v0.26.0): the dotted queue line — one LineString per FLYING plane with a non-empty
+// queue, chaining dest → queue[0] → … → queue[n−1]: ONLY the not-yet-started legs (the active
+// leg locationIcao→dest stays in routesGeoJson's solid layer). Arcs are concatenated with the
+// shared joint point dropped once. A plane is skipped — never guessed — when its dest or any
+// queued ICAO is missing from the airport index; empty collection when nothing qualifies.
+export function queuedRoutesGeoJson(
+  planes: PlaneState[],
+  airportsByIcao: ReadonlyMap<string, AirportCoord>,
+): FeatureCollection<MapLineFeature> {
+  const features: MapLineFeature[] = [];
+  for (const p of planes) {
+    if (p.status !== 'flying' || !p.destIcao || p.queue.length === 0) continue;
+    const pts = [p.destIcao, ...p.queue].map((icao) => airportsByIcao.get(icao));
+    if (pts.some((c) => c === undefined)) continue; // an endpoint is missing from the dataset — skip
+    const coords: [number, number][] = [];
+    for (let i = 0; i < pts.length - 1; i++) {
+      const arc = greatCircleArc(pts[i]!, pts[i + 1]!);
+      coords.push(...(i === 0 ? arc : arc.slice(1))); // drop the duplicated joint point
+    }
+    features.push({
+      type: 'Feature',
+      geometry: { type: 'LineString', coordinates: coords },
+      properties: { planeId: p.id },
+    });
+  }
+  return { type: 'FeatureCollection', features };
+}