[node] implement shipyard info retrieval and database caching

1 files changed, 6 insertions, 3 deletions

diff --git a/nodejs/lib/utils.ts b/nodejs/lib/utils.ts
index db39349..ec3ab09 100644
--- a/nodejs/lib/utils.ts
+++ b/nodejs/lib/utils.ts
@@ -2,9 +2,8 @@ import {
 	debugLog,
 } from './api.ts';
 import { PriorityQueue } from './priority_queue.ts';
-import {
-	market,
-} from './systems.ts';
+import { getShips } from './ships.ts';
+import { market } from './systems.ts';
 import {
 	Cargo,
 	CargoManifest,
@@ -41,6 +40,10 @@ export function distance(a: Point, b: Point) {
 	return Math.sqrt((a.x-b.x)**2 + (a.y-b.y)**2);
 }
 
+export function isThereAShipAtThisWaypoint(waypoint: Waypoint): boolean {
+	return getShips().some(s => s.nav.waypointSymbol === waypoint.symbol);
+}
+
 export function sortByDistanceFrom<T extends Point>(a: Point, points: Array<T>): Array<{data: T, distance: number}>{
 	let result = points.map(function (m) { return {
 		data: m,