aotds-docks/src/lib/shipDux/propulsion/drive.js

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import { Updux } from "updux";
import u from "updeep";
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import { createSelector } from "reselect";
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import reqs from "../reqs.js";
const dux = new Updux({
subduxes: { reqs },
initial: {
rating: 1,
advanced: false,
},
actions: {
setDrive: null,
setDriveReqs: null,
},
});
dux.setMutation("setDrive", (changes) => u(changes));
dux.setMutation("setDriveReqs", (reqs) => u({ reqs }));
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// needs to be at the top level
export const calculateDriveReqs = store =>
createSelector(
[
(ship) => ship.reqs.mass,
(ship) => ship.propulsion.drive.rating,
(ship) => ship.propulsion.drive.advanced,
],
(ship_mass, rating, advanced) =>
store.dispatch.setDriveReqs(calcDriveReqs(ship_mass, rating, advanced))
);
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export function calcDriveReqs(shipMass, rating, advanced = false) {
const mass = Math.ceil(rating * 0.05 * shipMass);
const cost = mass * (advanced ? 3 : 2);
return { mass, cost };
}
export default dux;