36 lines
1.5 KiB
TypeScript
36 lines
1.5 KiB
TypeScript
import { content, upgradePercentPerLevel, type ShipModel } from "@deadhead/content";
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import { describe, expect, it } from "vitest";
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import { checkRoute, realToGame } from "../src/index";
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const courier = content.shipModel("courier")!;
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const tanks = content.upgrade("fuel-tanks")!;
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const earth = content.location("earth")!;
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const mars = content.location("mars")!;
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/** A Courier with fuel tanks at `level` (decision 0.5.63: linear % of base range). */
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const withTanks = (level: number): ShipModel => ({
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...courier,
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fuelRangeMillionKm:
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courier.fuelRangeMillionKm * (1 + (upgradePercentPerLevel(tanks, "courier") * level) / 100),
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});
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/** Monthly samples over 16 game years (CR-012). */
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const MONTH = 30.44 * 24 * 3_600_000;
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const start = realToGame(Date.parse(content.config.epoch.realStart), content.config);
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const samples = Array.from({ length: 16 * 12 + 1 }, (_, i) => start + i * MONTH);
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const inRange = (ship: ShipModel) =>
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samples.map((t) => checkRoute(ship, earth, mars, t)).map((r) => r.ok);
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// Measured from Earth (decision 0.5.68 as amended by CR-012).
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describe("Courier to Mars from Earth (decision 0.5.68)", () => {
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it("reaches Mars with maxed fuel tanks near closest approach, but not at its farthest", () => {
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const reach = inRange(withTanks(3));
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expect(reach.some(Boolean)).toBe(true);
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expect(reach.some((ok) => !ok)).toBe(true);
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});
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it("never reaches Mars with fuel tanks at level 2 or less", () => {
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for (const level of [0, 1, 2]) expect(inRange(withTanks(level)).some(Boolean)).toBe(false);
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});
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});
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