got all subduxes in

src/lib/shipDux/weaponry/index.ts

@@ -2,44 +2,26 @@ import { combineReducers, createSlice } from "@reduxjs/toolkit";
 import { reqs } from "../reqs.js";
 import * as weapons from "./weapons.js";
 
-const firecons = createSlice({
-    name: "firecons",
-    initialState: {
-        stations: 0,
-        reqs,
-    },
-    reducers: {
-        setFirecons(state, action) {
-            const stations = action.payload;
-            state.stations = action.payload;
-            state.reqs = {
-                cost: 4 * stations,
-                mass: stations,
-            };
-        },
-    },
-});
-
 const adfc = createSlice({
-    name: "adfc",
+  name: "adfc",
-    initialState: {
+  initialState: {
-        rating: 0,
+    rating: 0,
-        reqs,
+    reqs,
-    },
+  },
-    reducers: {
+  reducers: {
-        setAdfc(state, action) {
+    setAdfc(state, action) {
-            const rating = action.payload;
+      const rating = action.payload;
-            state.rating = action.payload;
+      state.rating = action.payload;
-            state.reqs = {
+      state.reqs = {
-                cost: 8 * rating,
+        cost: 8 * rating,
-                mass: 2 * rating,
+        mass: 2 * rating,
-            };
+      };
-        },
     },
+  },
 });
 
 export const reducer = combineReducers({
-    adfc: adfc.reducer,
+  adfc: adfc.reducer,
-    firecons: firecons.reducer,
+  firecons: firecons.reducer,
-    weapons: weapons.reducer,
+  weapons: weapons.reducer,
 });

src/lib/store/ship.test.ts

@@ -36,4 +36,15 @@ test("kicking the tires", () => {
       cost: 0,
     },
   });
+
+  store.dispatch.setNbrArmorLayers(1);
+  store.dispatch.setArmorRating(1, 3);
+
+  expect(store.getState().structure.armor).toEqual({
+    layers: [3],
+    reqs: {
+      cost: 6,
+      mass: 6,
+    },
+  });
 });

src/lib/store/ship.ts

@@ -13,27 +13,48 @@ import { calcStreamliningReqs } from "./ship/structure/rules";
 import { cargoDux } from "./ship/structure/cargo";
 import { hullDux } from "./ship/structure/hull";
 import { screensDux, screensReqsReaction } from "./ship/structure/screens";
+import { armorDux } from "./ship/structure/armor";
+import { fireconsDux } from "./ship/weaponry/firecons";
+import { adfcDux } from "./ship/weaponry/adfc";
+import { weaponsDux } from "./ship/weaponry/weapons";
+
+process.env.UPDEEP_MODE = "dangerously_never_freeze";
+
+const structure = new Updux({
+  initialState: {},
+  subduxes: {
+    streamlining,
+    cargo: cargoDux,
+    hull: hullDux,
+    screens: screensDux,
+    armor: armorDux,
+  },
+});
+
+const propulsion = new Updux({
+  initialState: {},
+  subduxes: {
+    ftl,
+    drive,
+  },
+});
+
+const weaponry = new Updux({
+  initialState: {},
+  subduxes: {
+    adfc: adfcDux,
+    firecons: fireconsDux,
+    weapons: weaponsDux,
+  },
+});
 
 const shipDux = new Updux({
   subduxes: {
     identification,
-    structure: new Updux({
+    structure,
-      initialState: {},
+    propulsion,
-      subduxes: {
-        streamlining,
-        cargo: cargoDux,
-        hull: hullDux,
-        screens: screensDux,
-      },
-    }),
-    propulsion: new Updux({
-      initialState: {},
-      subduxes: {
-        ftl,
-        drive,
-      },
-    }),
     carrier: carrierDux,
+    weaponry,
   },
 });
 

src/lib/store/ship/structure/armor.ts

@@ -0,0 +1,52 @@
+import { reqs, type Reqs } from "$lib/shipDux/reqs";
+import Updux, { createPayloadAction } from "updux";
+import u from "@yanick/updeep-remeda";
+import { createSelector } from "reselect";
+import prepare from "immer";
+
+type Layer = number;
+
+const initialState = {
+  reqs,
+  layers: [] as Layer[],
+};
+
+const setNbrArmorLayers = createPayloadAction<number>("setNbrArmorLayers");
+const setArmorRating = createPayloadAction(
+  "setArmorRating",
+  (id: number, rating: number) => ({ index: id - 1, rating })
+);
+
+export const armorDux = new Updux({
+  initialState,
+  actions: { setNbrArmorLayers, setArmorRating },
+});
+
+armorDux.addMutation(setArmorRating, ({ index, rating }) =>
+  prepare((state) => {
+    state.layers[index] = rating;
+    state.reqs = calcArmorReqs(state.layers);
+  })
+);
+
+armorDux.addMutation(setNbrArmorLayers, (nbrLayers) =>
+  prepare((state) => {
+    while (state.layers.length > nbrLayers) {
+      state.layers.pop();
+    }
+    while (state.layers.length < nbrLayers) {
+      state.layers.push(0);
+    }
+    state.reqs = calcArmorReqs(state.layers);
+  })
+);
+
+function calcArmorReqs(layers: Layer[]): Reqs {
+  const mass = 2 * layers.reduce((a, b) => a + b, 0);
+  const cost = 2 * layers.map((v, k) => v * (k + 1)).reduce((a, b) => a + b, 0);
+
+  return {
+    mass,
+    cost,
+  };
+}

src/lib/store/ship/weaponry/adfc.ts

@@ -0,0 +1,20 @@
+import { reqs } from "$lib/shipDux/reqs";
+import Updux, { createPayloadAction } from "updux";
+import u from "@yanick/updeep-remeda";
+
+export const adfcDux = new Updux({
+  initialState: {
+    rating: 0,
+    reqs,
+  },
+  actions: {
+    setADFC: (rating: number) => rating,
+  },
+});
+
+adfcDux.addMutation(adfcDux.actions.setADFC, (rating) =>
+  u({
+    rating,
+    reqs: { cost: 8 * rating, mass: 2 * rating },
+  })
+);

src/lib/store/ship/weaponry/firecons.ts

@@ -0,0 +1,20 @@
+import { reqs } from "$lib/shipDux/reqs";
+import Updux, { createPayloadAction } from "updux";
+import u from "@yanick/updeep-remeda";
+
+export const fireconsDux = new Updux({
+  initialState: {
+    stations: 0,
+    reqs,
+  },
+  actions: {
+    setFirecons: (stations: number) => stations,
+  },
+});
+
+fireconsDux.addMutation(fireconsDux.actions.setFirecons, (stations) =>
+  u({
+    stations,
+    reqs: { cost: 4 * stations, mass: stations },
+  })
+);

src/lib/store/ship/weaponry/rules.ts

@@ -0,0 +1,90 @@
+import type { Reqs } from "$lib/shipDux/reqs";
+
+export const weaponTypes = [
+  {
+    name: "beam",
+    type: "beam",
+    reqs: beamReqs,
+    initial: {
+      weaponClass: 1,
+    },
+  },
+  {
+    name: "submunition pack",
+    type: "submunition",
+    reqs: { mass: 1, cost: 3 },
+    initial: { arc: "F" },
+  },
+  {
+    name: "point defence system",
+    type: "pds",
+    reqs: { mass: 1, cost: 3 },
+    initial: {},
+  },
+  {
+    name: "scattergun",
+    type: "scattergun",
+    reqs: { mass: 1, cost: 4 },
+    initial: {},
+  },
+  {
+    name: "needle weapon",
+    type: "needle",
+    reqs: { mass: 2, cost: 6 },
+    initial: { arc: "F" },
+  },
+];
+
+export function weaponReqs(weapon): Reqs {
+  const { reqs } = weaponTypes.find((wt) => wt.type === weapon.type) || {};
+
+  if (!reqs) return {};
+
+  if (typeof reqs === "function") return reqs(weapon);
+
+  return reqs;
+}
+
+const isBroadside = (arcs) => {
+  if (arcs.length !== 4) return false;
+
+  // that'd be A or F
+  return !arcs.some((a) => a.length === 1);
+};
+
+function beamReqs({ weaponClass, arcs }) {
+  let mass;
+
+  if (weaponClass === 1) {
+    mass = 1;
+  }
+
+  if (weaponClass === 2) {
+    mass = 2 + (arcs.length > 3 ? 1 : 0);
+  }
+
+  if (weaponClass == 3) {
+    mass = 4;
+
+    if (isBroadside(arcs)) {
+      mass += 2;
+    } else {
+      mass += arcs.length - 1;
+    }
+  }
+
+  if (weaponClass == 4) {
+    mass = 8;
+
+    if (isBroadside(arcs)) {
+      mass += 4;
+    } else {
+      mass += 2 * (arcs.length - 1);
+    }
+  }
+
+  return {
+    mass,
+    cost: 3 * mass,
+  };
+}

src/lib/store/ship/weaponry/weapons.ts

@@ -0,0 +1,46 @@
+import type { Reqs } from "$lib/shipDux/reqs";
+import Updux from "updux";
+import u from "@yanick/updeep-remeda";
+import * as R from "remeda";
+import { weaponReqs } from "./rules";
+import { nanoid } from "@reduxjs/toolkit";
+
+type Weapon = {
+  weaponClass: string;
+  arcs?: unknown[];
+  type: string;
+};
+
+type IndexedWeapon = { id: string; reqs: Reqs; specs: Weapon };
+
+export const weaponsDux = new Updux({
+  initialState: [] as IndexedWeapon[],
+  actions: {
+    removeWeapon: (id: string) => id,
+    setWeapon: (id: string, specs: Weapon) => ({ id, specs }),
+    addWeapon: (specs: Weapon) => specs,
+  },
+});
+
+weaponsDux.addMutation(weaponsDux.actions.removeWeapon, (id) =>
+  R.reject(u.matches({ id }))
+);
+
+weaponsDux.addMutation(
+  weaponsDux.actions.setWeapon,
+  ({ id, specs }) =>
+    (state) => {
+      const weapon = state.find(u.matches({ id }));
+      if (!weapon) return;
+      weapon.specs = specs;
+      weapon.reqs = weaponReqs(specs);
+    }
+);
+
+weaponsDux.addMutation(weaponsDux.actions.addWeapon, (specs) => (state) => {
+  state.push({
+    id: nanoid(),
+    specs,
+    reqs: weaponReqs(specs),
+  });
+});