import type { Location } from "@deadhead/content";
import type { GameTime } from "./clock";
import { locationPosition } from "./positions";

/** Straight-line distance between two locations at a game time, in million km. */
export function routeDistance(from: Location, to: Location, gameTime: GameTime): number {
  const a = locationPosition(from, gameTime);
  const b = locationPosition(to, gameTime);
  return Math.hypot(b.x - a.x, b.y - a.y);
}