Solidify campaign progression state

src/game/data/battles.ts

@@ -0,0 +1,40 @@
+import {
+  firstBattleBonds,
+  firstBattleMap,
+  firstBattleUnits,
+  firstBattleVictoryPages,
+  type BattleBond,
+  type BattleMap,
+  type StoryPage,
+  type UnitData
+} from './scenario';
+
+export type BattleScenarioDefinition = {
+  id: string;
+  title: string;
+  map: BattleMap;
+  units: UnitData[];
+  bonds: BattleBond[];
+  mapTextureKey: string;
+  leaderUnitId: string;
+  quickVictoryTurnLimit: number;
+  baseVictoryGold: number;
+  itemRewards: string[];
+  victoryPages: StoryPage[];
+  nextCampScene: string;
+};
+
+export const firstBattleScenario: BattleScenarioDefinition = {
+  id: 'first-battle-zhuo-commandery',
+  title: '탁현의 전투',
+  map: firstBattleMap,
+  units: firstBattleUnits,
+  bonds: firstBattleBonds,
+  mapTextureKey: 'battle-map-first',
+  leaderUnitId: 'rebel-leader',
+  quickVictoryTurnLimit: 8,
+  baseVictoryGold: 300,
+  itemRewards: ['콩 1', '탁주 1', '의용군 명성 +1'],
+  victoryPages: firstBattleVictoryPages,
+  nextCampScene: 'CampScene'
+};

src/game/scenes/BattleScene.ts

@@ -8,6 +8,7 @@ import {
   type UnitData,
   type UnitStats
 } from '../data/scenario';
+import { firstBattleScenario } from '../data/battles';
 import { getTerrainRule, getUnitClass, type TerrainType, type UnitClassKey } from '../data/battleRules';
 import {
   equipmentExpToNext,
@@ -16,7 +17,7 @@ import {
   getItem,
   type EquipmentSlot
 } from '../data/battleItems';
-import { setFirstBattleReport } from '../state/campaignState';
+import { getCampaignState, markCampaignStep, saveCampaignState, setFirstBattleReport, type CampaignStep } from '../state/campaignState';
 import { palette } from '../ui/palette';
 
 const unitTexture: Record<string, string> = {
@@ -269,6 +270,8 @@ type SavedUnitState = Pick<UnitData, 'id' | 'level' | 'exp' | 'hp' | 'maxHp' | '
 
 type BattleSaveState = {
   version: 1;
+  battleId: string;
+  campaignStep?: CampaignStep;
   savedAt: string;
   turnNumber: number;
   activeFaction: ActiveFaction;
@@ -286,7 +289,9 @@ type BattleSaveState = {
 
 const maxEquipmentLevel = 9;
 const maxCharacterLevel = 99;
-const battleSaveStorageKey = 'heros-web:first-battle-state';
+const battleScenario = firstBattleScenario;
+const legacyBattleSaveStorageKey = 'heros-web:first-battle-state';
+const battleSaveStorageKey = `heros-web:battle:${battleScenario.id}`;
 const initialFirstBattleUnits = firstBattleUnits.map(cloneUnitData);
 const initialFirstBattleBonds = firstBattleBonds.map(cloneBattleBond);
 
@@ -413,9 +418,9 @@ const defaultEnemyAiByClass: Partial<Record<UnitClassKey, EnemyAiBehavior>> = {
 };
 
 const guardDetectionRange = 5;
-const leaderUnitId = 'rebel-leader';
-const quickVictoryTurnLimit = 8;
-const baseVictoryGold = 300;
+const leaderUnitId = battleScenario.leaderUnitId;
+const quickVictoryTurnLimit = battleScenario.quickVictoryTurnLimit;
+const baseVictoryGold = battleScenario.baseVictoryGold;
 
 const commandLabels: Record<BattleCommand, string> = {
   attack: '공격',
@@ -529,6 +534,10 @@ export class BattleScene extends Phaser.Scene {
 
   create() {
     this.resetBattleData();
+    const campaign = getCampaignState();
+    if (campaign.step === 'new' || campaign.step === 'prologue' || campaign.step === 'first-battle') {
+      markCampaignStep('first-battle');
+    }
     const { width, height } = this.scale;
     this.layout = this.createLayout(width, height);
     const startUnit = firstBattleUnits.find((unit) => unit.id === 'liu-bei') ?? firstBattleUnits[0];
@@ -625,7 +634,7 @@ export class BattleScene extends Phaser.Scene {
     this.mapMask = maskShape.createGeometryMask();
     const mapMask = this.mapMask;
 
-    const background = this.add.image(0, 0, 'battle-map-first');
+    const background = this.add.image(0, 0, battleScenario.mapTextureKey);
     background.setOrigin(0);
     background.setDepth(0);
     background.setDisplaySize(firstBattleMap.width * layout.tileSize, firstBattleMap.height * layout.tileSize);
@@ -1912,7 +1921,7 @@ export class BattleScene extends Phaser.Scene {
             defeats: mvp.stats.defeats
           }
         : undefined,
-      itemRewards: outcome === 'victory' ? ['콩 1', '탁주 1', '의용군 명성 +1'] : [],
+      itemRewards: outcome === 'victory' ? [...battleScenario.itemRewards] : [],
       completedCampDialogues: [],
       createdAt: new Date().toISOString()
     });
@@ -2838,13 +2847,15 @@ export class BattleScene extends Phaser.Scene {
   }
 
   private hasBattleSave() {
-    return Boolean(window.localStorage.getItem(battleSaveStorageKey));
+    return Boolean(window.localStorage.getItem(battleSaveStorageKey) ?? window.localStorage.getItem(legacyBattleSaveStorageKey));
   }
 
   private saveBattleState() {
     try {
       const state = this.createBattleSaveState();
       window.localStorage.setItem(battleSaveStorageKey, JSON.stringify(state));
+      window.localStorage.removeItem(legacyBattleSaveStorageKey);
+      saveCampaignState();
       this.renderSituationPanel(`전투 상태를 저장했습니다.\n${this.formatSavedAt(state.savedAt)}`);
     } catch {
       this.renderSituationPanel('전투 상태를 저장하지 못했습니다.');
@@ -2852,7 +2863,7 @@ export class BattleScene extends Phaser.Scene {
   }
 
   private loadBattleState() {
-    const raw = window.localStorage.getItem(battleSaveStorageKey);
+    const raw = window.localStorage.getItem(battleSaveStorageKey) ?? window.localStorage.getItem(legacyBattleSaveStorageKey);
     if (!raw) {
       this.renderSituationPanel('불러올 저장 데이터가 없습니다.');
       return;
@@ -2863,6 +2874,9 @@ export class BattleScene extends Phaser.Scene {
       if (!state || state.version !== 1 || !Array.isArray(state.units)) {
         throw new Error('Invalid battle save');
       }
+      if (state.battleId && state.battleId !== battleScenario.id) {
+        throw new Error('Battle save does not belong to this scenario');
+      }
       this.applyBattleSaveState(state);
       this.renderSituationPanel(`저장된 전투를 불러왔습니다.\n${this.formatSavedAt(state.savedAt)}`);
     } catch {
@@ -2873,6 +2887,8 @@ export class BattleScene extends Phaser.Scene {
   private createBattleSaveState(): BattleSaveState {
     return {
       version: 1,
+      battleId: battleScenario.id,
+      campaignStep: getCampaignState().step,
       savedAt: new Date().toISOString(),
       turnNumber: this.turnNumber,
       activeFaction: this.activeFaction,
@@ -5366,6 +5382,7 @@ export class BattleScene extends Phaser.Scene {
   getDebugState() {
     return {
       scene: this.scene.key,
+      battleId: battleScenario.id,
       turnNumber: this.turnNumber,
       activeFaction: this.activeFaction,
       phase: this.phase,

src/game/scenes/CampScene.ts

@@ -2,7 +2,14 @@ import Phaser from 'phaser';
 import { soundDirector } from '../audio/SoundDirector';
 import { equipmentExpToNext, equipmentSlotLabels, equipmentSlots, getItem, type EquipmentSlot } from '../data/battleItems';
 import { firstBattleBonds, firstBattleUnits, firstBattleVictoryPages, type PortraitKey, type UnitData } from '../data/scenario';
-import { applyCampBondExp, getFirstBattleReport, type CampBondSnapshot, type FirstBattleReport } from '../state/campaignState';
+import {
+  applyCampBondExp,
+  getCampaignState,
+  getFirstBattleReport,
+  markCampaignStep,
+  type CampaignState,
+  type FirstBattleReport
+} from '../state/campaignState';
 import { palette } from '../ui/palette';
 
 type CampTab = 'status' | 'dialogue' | 'supplies';
@@ -68,6 +75,7 @@ const campDialogues: CampDialogue[] = [
 ];
 
 export class CampScene extends Phaser.Scene {
+  private campaign?: CampaignState;
   private report?: FirstBattleReport;
   private selectedUnitId = 'liu-bei';
   private activeTab: CampTab = 'status';
@@ -80,8 +88,9 @@ export class CampScene extends Phaser.Scene {
   }
 
   create() {
-    this.report = getFirstBattleReport() ?? this.createFallbackReport();
-    this.selectedUnitId = this.report.units.find((unit) => unit.faction === 'ally')?.id ?? 'liu-bei';
+    this.campaign = getCampaignState();
+    this.report = this.campaign.firstBattleReport ?? getFirstBattleReport() ?? this.createFallbackReport();
+    this.selectedUnitId = this.currentUnits().find((unit) => unit.faction === 'ally')?.id ?? 'liu-bei';
     soundDirector.playMusic('militia-theme');
 
     const { width, height } = this.scale;
@@ -130,7 +139,8 @@ export class CampScene extends Phaser.Scene {
     }
 
     const achieved = this.report.objectives.filter((objective) => objective.achieved).length;
-    return `첫 전투 ${this.report.turnNumber}턴 승리 · 군자금 ${this.report.rewardGold} · 목표 ${achieved}/${this.report.objectives.length} · 격파 ${this.report.defeatedEnemies}/${this.report.totalEnemies}`;
+    const gold = this.campaign?.gold ?? this.report.rewardGold;
+    return `첫 전투 ${this.report.turnNumber}턴 승리 · 군자금 ${gold} · 목표 ${achieved}/${this.report.objectives.length} · 격파 ${this.report.defeatedEnemies}/${this.report.totalEnemies}`;
   }
 
   private renderStaticButtons() {
@@ -139,6 +149,7 @@ export class CampScene extends Phaser.Scene {
     this.addTabButton('정비', 'supplies', 918, 38);
     this.addCommandButton('다음 이야기', 1080, 38, 150, () => {
       soundDirector.playSelect();
+      markCampaignStep('first-victory-story');
       this.scene.start('StoryScene', { pages: firstBattleVictoryPages, nextScene: 'TitleScene' });
     });
   }
@@ -206,7 +217,7 @@ export class CampScene extends Phaser.Scene {
   }
 
   private renderUnitColumn() {
-    const allies = this.report?.units.filter((unit) => unit.faction === 'ally') ?? [];
+    const allies = this.currentUnits().filter((unit) => unit.faction === 'ally');
     allies.forEach((unit, index) => {
       const x = 42;
       const y = 120 + index * 150;
@@ -294,7 +305,7 @@ export class CampScene extends Phaser.Scene {
     this.track(this.add.text(x + 24, y + 56, '대화를 보면 해당 장수들의 공명 경험치가 오릅니다.', this.textStyle(14, '#d4dce6')));
 
     campDialogues.forEach((dialogue, index) => {
-      const completed = this.report?.completedCampDialogues.includes(dialogue.id) ?? false;
+      const completed = this.completedCampDialogues().includes(dialogue.id);
       const rowY = y + 96 + index * 64;
       const selected = this.selectedDialogueId === dialogue.id;
       const row = this.track(this.add.rectangle(x + 24, rowY, 320, 48, selected ? 0x25384a : 0x151f2a, selected ? 0.96 : 0.86));
@@ -316,7 +327,7 @@ export class CampScene extends Phaser.Scene {
 
   private renderSelectedDialogue(x: number, y: number, width: number, height: number) {
     const dialogue = campDialogues.find((candidate) => candidate.id === this.selectedDialogueId) ?? campDialogues[0];
-    const completed = this.report?.completedCampDialogues.includes(dialogue.id) ?? false;
+    const completed = this.completedCampDialogues().includes(dialogue.id);
     const bg = this.track(this.add.rectangle(x, y, width, height, 0x0d141c, 0.92));
     bg.setOrigin(0);
     bg.setStrokeStyle(1, completed ? palette.green : palette.gold, 0.5);
@@ -346,7 +357,7 @@ export class CampScene extends Phaser.Scene {
 
   private renderBondList(x: number, y: number, width: number) {
     this.track(this.add.text(x, y, '공명', this.textStyle(18, '#f2e3bf', true)));
-    this.report?.bonds.forEach((bond, index) => {
+    this.currentBonds().forEach((bond, index) => {
       const rowY = y + 32 + index * 36;
       const first = this.unitName(bond.unitIds[0]);
       const second = this.unitName(bond.unitIds[1]);
@@ -364,13 +375,13 @@ export class CampScene extends Phaser.Scene {
     this.track(this.add.text(x + 24, y + 22, '정비와 보급', this.textStyle(24, '#f2e3bf', true)));
     this.track(this.add.text(x + 24, y + 58, '획득한 보상과 장비 성장 상태를 확인합니다. 장비 교체와 상점은 다음 확장에서 붙일 수 있습니다.', this.textStyle(14, '#d4dce6')));
 
-    const rewards = this.report?.itemRewards.length ? this.report.itemRewards : ['콩 1', '탁주 1'];
+    const rewards = this.inventoryLabels();
     rewards.forEach((reward, index) => {
       this.renderSupplyBox(reward, x + 24 + index * 160, y + 104);
     });
 
     this.track(this.add.text(x + 24, y + 190, '부대 장비 요약', this.textStyle(20, '#f2e3bf', true)));
-    this.report?.units
+    this.currentUnits()
       .filter((unit) => unit.faction === 'ally')
       .forEach((unit, index) => {
         const rowY = y + 232 + index * 58;
@@ -418,6 +429,7 @@ export class CampScene extends Phaser.Scene {
     const updated = applyCampBondExp(dialogue.id, dialogue.bondId, dialogue.rewardExp);
     if (updated) {
       this.report = updated;
+      this.campaign = getCampaignState();
     } else if (this.report && !this.report.completedCampDialogues.includes(dialogue.id)) {
       this.report.completedCampDialogues.push(dialogue.id);
       const bond = this.report.bonds.find((candidate) => candidate.id === dialogue.bondId);
@@ -455,11 +467,41 @@ export class CampScene extends Phaser.Scene {
   }
 
   private selectedUnit() {
-    return this.report?.units.find((unit) => unit.id === this.selectedUnitId);
+    return this.currentUnits().find((unit) => unit.id === this.selectedUnitId);
   }
 
   private unitName(unitId: string) {
-    return this.report?.units.find((unit) => unit.id === unitId)?.name ?? unitId;
+    return this.currentUnits().find((unit) => unit.id === unitId)?.name ?? unitId;
+  }
+
+  private currentUnits() {
+    if (this.campaign?.roster.length) {
+      return this.campaign.roster;
+    }
+    return this.report?.units ?? [];
+  }
+
+  private currentBonds() {
+    if (this.campaign?.bonds.length) {
+      return this.campaign.bonds;
+    }
+    return this.report?.bonds ?? [];
+  }
+
+  private completedCampDialogues() {
+    if (this.campaign) {
+      return this.campaign.completedCampDialogues;
+    }
+    return this.report?.completedCampDialogues ?? [];
+  }
+
+  private inventoryLabels() {
+    const inventory = this.campaign?.inventory ?? {};
+    const entries = Object.entries(inventory).filter(([, amount]) => amount > 0);
+    if (entries.length > 0) {
+      return entries.map(([label, amount]) => `${label} ${amount}`);
+    }
+    return this.report?.itemRewards.length ? this.report.itemRewards : ['콩 1', '탁주 1'];
   }
 
   private drawBar(x: number, y: number, width: number, height: number, ratio: number, color: number) {
@@ -494,6 +536,14 @@ export class CampScene extends Phaser.Scene {
       activeTab: this.activeTab,
       selectedUnitId: this.selectedUnitId,
       selectedDialogueId: this.selectedDialogueId,
+      campaign: this.campaign
+        ? {
+            step: this.campaign.step,
+            gold: this.campaign.gold,
+            inventory: this.campaign.inventory,
+            completedCampDialogues: this.campaign.completedCampDialogues
+          }
+        : null,
       report: this.report
         ? {
             rewardGold: this.report.rewardGold,

src/game/scenes/TitleScene.ts

@@ -1,5 +1,7 @@
 import Phaser from 'phaser';
 import { soundDirector } from '../audio/SoundDirector';
+import { firstBattleVictoryPages } from '../data/scenario';
+import { hasCampaignSave, loadCampaignState, startNewCampaign } from '../state/campaignState';
 import { palette } from '../ui/palette';
 
 export class TitleScene extends Phaser.Scene {
@@ -160,8 +162,9 @@ export class TitleScene extends Phaser.Scene {
     this.add.rectangle(menuX, menuY - 126, 186, 2, palette.gold, 0.7);
     this.add.rectangle(menuX, menuY + 126, 186, 2, palette.gold, 0.36);
 
+    const canContinue = hasCampaignSave();
     this.createMenuButton(menuX, menuY - 70, '새 게임', true, () => this.startGame());
-    this.createMenuButton(menuX, menuY, '이어하기', false, () => undefined);
+    this.createMenuButton(menuX, menuY, '이어하기', canContinue, () => this.continueGame());
     this.createMenuButton(menuX, menuY + 70, '설정', true, () => this.openSettingsPanel(menuX, menuY));
   }
 
@@ -285,6 +288,31 @@ export class TitleScene extends Phaser.Scene {
     soundDirector.start();
     soundDirector.resume();
     soundDirector.playSelect();
+    startNewCampaign();
+    this.scene.start('StoryScene');
+  }
+
+  private continueGame() {
+    soundDirector.start();
+    soundDirector.resume();
+    soundDirector.playSelect();
+
+    const campaign = loadCampaignState();
+    if (campaign.step === 'first-camp') {
+      this.scene.start('CampScene');
+      return;
+    }
+
+    if (campaign.step === 'first-battle') {
+      this.scene.start('BattleScene');
+      return;
+    }
+
+    if (campaign.step === 'first-victory-story') {
+      this.scene.start('StoryScene', { pages: firstBattleVictoryPages, nextScene: 'TitleScene' });
+      return;
+    }
+
     this.scene.start('StoryScene');
   }
 }

src/game/state/campaignState.ts

@@ -34,40 +34,228 @@ export type FirstBattleReport = {
   createdAt: string;
 };
 
-let firstBattleReport: FirstBattleReport | undefined;
+export type CampaignStep = 'new' | 'prologue' | 'first-battle' | 'first-camp' | 'first-victory-story';
+
+export type CampaignState = {
+  version: 1;
+  updatedAt: string;
+  step: CampaignStep;
+  gold: number;
+  roster: UnitData[];
+  bonds: CampBondSnapshot[];
+  inventory: Record<string, number>;
+  completedCampDialogues: string[];
+  firstBattleReport?: FirstBattleReport;
+};
+
+export const campaignStorageKey = 'heros-web:campaign-state';
+
+let campaignState: CampaignState | undefined;
+
+export function createInitialCampaignState(): CampaignState {
+  return {
+    version: 1,
+    updatedAt: new Date().toISOString(),
+    step: 'new',
+    gold: 0,
+    roster: [],
+    bonds: [],
+    inventory: {},
+    completedCampDialogues: []
+  };
+}
+
+export function startNewCampaign() {
+  const state = createInitialCampaignState();
+  state.step = 'prologue';
+  return setCampaignState(state);
+}
+
+export function getCampaignState() {
+  return cloneCampaignState(ensureCampaignState());
+}
+
+export function setCampaignState(state: CampaignState) {
+  campaignState = normalizeCampaignState(state);
+  persistCampaignState(campaignState);
+  return cloneCampaignState(campaignState);
+}
+
+export function loadCampaignState() {
+  campaignState = readStoredCampaignState() ?? createInitialCampaignState();
+  return cloneCampaignState(campaignState);
+}
+
+export function saveCampaignState(state = ensureCampaignState()) {
+  campaignState = normalizeCampaignState(state);
+  persistCampaignState(campaignState);
+  return cloneCampaignState(campaignState);
+}
+
+export function resetCampaignState() {
+  campaignState = createInitialCampaignState();
+  tryStorage()?.removeItem(campaignStorageKey);
+  return cloneCampaignState(campaignState);
+}
+
+export function hasCampaignSave() {
+  return Boolean(tryStorage()?.getItem(campaignStorageKey));
+}
+
+export function markCampaignStep(step: CampaignStep) {
+  const state = ensureCampaignState();
+  state.step = step;
+  state.updatedAt = new Date().toISOString();
+  persistCampaignState(state);
+  return cloneCampaignState(state);
+}
 
 export function setFirstBattleReport(report: FirstBattleReport) {
-  firstBattleReport = cloneReport(report);
+  const state = ensureCampaignState();
+  const previousRewardGold = state.firstBattleReport?.rewardGold ?? 0;
+  const reportClone = cloneReport(report);
+
+  state.firstBattleReport = reportClone;
+  state.step = reportClone.outcome === 'victory' ? 'first-camp' : 'first-battle';
+  state.gold = Math.max(0, state.gold - previousRewardGold + reportClone.rewardGold);
+  state.roster = reportClone.units.filter((unit) => unit.faction === 'ally').map(cloneUnit);
+  state.bonds = reportClone.bonds.map(cloneBondSnapshot);
+  state.completedCampDialogues = [...reportClone.completedCampDialogues];
+  state.inventory = inventoryFromRewards(reportClone.itemRewards);
+  state.updatedAt = new Date().toISOString();
+
+  persistCampaignState(state);
 }
 
 export function getFirstBattleReport() {
-  return firstBattleReport ? cloneReport(firstBattleReport) : undefined;
+  const report = ensureCampaignState().firstBattleReport;
+  return report ? cloneReport(report) : undefined;
 }
 
 export function applyCampBondExp(dialogueId: string, bondId: string, amount: number) {
-  if (!firstBattleReport) {
+  const state = ensureCampaignState();
+  if (!state.firstBattleReport) {
     return undefined;
   }
 
-  const bond = firstBattleReport.bonds.find((candidate) => candidate.id === bondId);
-  if (!bond) {
+  if (!state.completedCampDialogues.includes(dialogueId)) {
+    state.completedCampDialogues.push(dialogueId);
+  }
+  if (!state.firstBattleReport.completedCampDialogues.includes(dialogueId)) {
+    state.firstBattleReport.completedCampDialogues.push(dialogueId);
+  }
+
+  const campaignBond = state.bonds.find((candidate) => candidate.id === bondId);
+  const reportBond = state.firstBattleReport.bonds.find((candidate) => candidate.id === bondId);
+  if (!campaignBond || !reportBond) {
     return undefined;
   }
 
-  if (!firstBattleReport.completedCampDialogues.includes(dialogueId)) {
-    firstBattleReport.completedCampDialogues.push(dialogueId);
+  advanceBond(campaignBond, amount);
+  reportBond.level = campaignBond.level;
+  reportBond.exp = campaignBond.exp;
+  reportBond.battleExp = campaignBond.battleExp;
+  state.updatedAt = new Date().toISOString();
+
+  persistCampaignState(state);
+  return cloneReport(state.firstBattleReport);
+}
+
+function ensureCampaignState() {
+  if (!campaignState) {
+    campaignState = readStoredCampaignState() ?? createInitialCampaignState();
+  }
+  return campaignState;
+}
+
+function normalizeCampaignState(state: CampaignState): CampaignState {
+  const normalized = cloneCampaignState(state);
+  normalized.version = 1;
+  normalized.updatedAt = new Date().toISOString();
+  normalized.roster = normalized.roster.map(cloneUnit);
+  normalized.bonds = normalized.bonds.map(cloneBondSnapshot);
+  normalized.completedCampDialogues = [...new Set(normalized.completedCampDialogues)];
+  normalized.inventory = { ...normalized.inventory };
+  if (normalized.firstBattleReport) {
+    normalized.firstBattleReport = cloneReport(normalized.firstBattleReport);
+  }
+  return normalized;
+}
+
+function readStoredCampaignState() {
+  const raw = tryStorage()?.getItem(campaignStorageKey);
+  if (!raw) {
+    return undefined;
   }
 
+  try {
+    const parsed = JSON.parse(raw) as CampaignState;
+    if (!parsed || parsed.version !== 1) {
+      return undefined;
+    }
+    return normalizeCampaignState(parsed);
+  } catch {
+    return undefined;
+  }
+}
+
+function persistCampaignState(state: CampaignState) {
+  tryStorage()?.setItem(campaignStorageKey, JSON.stringify(state));
+}
+
+function tryStorage() {
+  if (typeof window === 'undefined') {
+    return undefined;
+  }
+  return window.localStorage;
+}
+
+function advanceBond(bond: CampBondSnapshot, amount: number) {
   bond.battleExp += amount;
   bond.exp += amount;
   while (bond.exp >= 100) {
     bond.exp -= 100;
     bond.level = Math.min(100, bond.level + 1);
   }
+}
 
-  return cloneReport(firstBattleReport);
+function inventoryFromRewards(rewards: string[]) {
+  return rewards.reduce<Record<string, number>>((inventory, reward) => {
+    const { label, amount } = parseRewardLabel(reward);
+    inventory[label] = (inventory[label] ?? 0) + amount;
+    return inventory;
+  }, {});
+}
+
+function parseRewardLabel(reward: string) {
+  const normalized = reward.replace(/\s+/g, ' ').trim();
+  const match = normalized.match(/^(.*?)(?:\s*[+xX]?\s*(\d+))$/);
+
+  if (!match) {
+    return { label: normalized, amount: 1 };
+  }
+
+  return {
+    label: match[1].trim() || normalized,
+    amount: Number(match[2] ?? 1)
+  };
+}
+
+function cloneCampaignState(state: CampaignState): CampaignState {
+  return JSON.parse(JSON.stringify(state)) as CampaignState;
 }
 
 function cloneReport(report: FirstBattleReport): FirstBattleReport {
   return JSON.parse(JSON.stringify(report)) as FirstBattleReport;
 }
+
+function cloneUnit(unit: UnitData): UnitData {
+  return JSON.parse(JSON.stringify(unit)) as UnitData;
+}
+
+function cloneBondSnapshot(bond: CampBondSnapshot): CampBondSnapshot {
+  return {
+    ...bond,
+    unitIds: [...bond.unitIds] as [string, string]
+  };
+}