adrien
71dad18e8d
Central banks now redeem the national money foreign banks hold, sell reserves to defend a weak rate, and cover part of strategic imports from reserves. Five repeatable technologies raise each commodity's output per unit of energy. Hostile troops on a road or sea lane sever trade, power and unit supply. Middlemen buy food to resell to neighbours at a markup, and starving regions buy before those topping up their buffers, which clears the landlocked famines. The economic map's trade graph gains a colour legend.
56 lines
2.1 KiB
JavaScript
56 lines
2.1 KiB
JavaScript
import { TestCase } from "./framework/test_case.js";
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import { smallState, cityOf } from "./framework/helpers.js";
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import { key } from "../shared/hex.js";
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// Puts a food-holding producer on an adjacent owned land tile and wires the road,
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// so it is a reachable supplier for the city.
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function placeSupplier(state, city) {
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const neighbour = state.topology.neighbours(city.coords.x, city.coords.y)
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.find((n) => state._isLand(n) && state.civAt(n) === city.civ);
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const k = key(neighbour.x, neighbour.y);
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if (!state.roads.has(k) && !state.railways.has(k)) state.roads.add(k);
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state.tileImprovements.set(k, "steel_mill");
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state.tileImprovementOwner.set(k, city.civ);
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state.tileImprovementHp.set(k, 1000);
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state._ensureResourceStock(k).food = 1_000_000;
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state._ensureBuildingAgent(k);
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return { coords: neighbour, k };
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}
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function hasSupplierAt(result, coords) {
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return result.some((entry) => entry.coords.x === coords.x && entry.coords.y === coords.y);
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}
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export class TradeRouteTest extends TestCase {
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test_a_hostile_unit_cuts_a_trade_route() {
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const state = smallState();
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const city = cityOf(state, 0);
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const supplier = placeSupplier(state, city);
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const nodes = state._resourceNodes();
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this.assertTrue(
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hasSupplierAt(state._nearbySuppliers(city, "food", nodes), supplier.coords),
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"the supplier is reachable while the road is clear"
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);
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// A hostile army standing on the road closes it.
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state._declareWar(0, 1);
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state._spawnUnit(supplier.coords, 1, state.protoUnits[0]);
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this.assertFalse(
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hasSupplierAt(state._nearbySuppliers(city, "food", nodes), supplier.coords),
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"the hostile unit cut the route"
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);
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}
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test_a_neutral_unit_leaves_the_route_open() {
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const state = smallState();
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const city = cityOf(state, 0);
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const supplier = placeSupplier(state, city);
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// No war: the same troops are neutral traffic.
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state._spawnUnit(supplier.coords, 1, state.protoUnits[0]);
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const nodes = state._resourceNodes();
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this.assertTrue(
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hasSupplierAt(state._nearbySuppliers(city, "food", nodes), supplier.coords),
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"neutral troops do not cut the route"
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);
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}
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}
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