refactor: consolidate duplicate functions (calculateDesignTime, calculateDesignCapacityCost, generateSwarmEnemies)

src/lib/game/crafting-utils.ts

@@ -1,9 +1,8 @@
 // ─── Crafting Helper Utilities ─────────────────────────────────────────────────
 // Instance/ID generation and helper functions
 
-import type { EquipmentInstance, EnchantmentDesign, DesignEffect } from './types';
+import type { EquipmentInstance, EnchantmentDesign } from './types';
 import { EQUIPMENT_TYPES, type EquipmentCategory, type EquipmentSlot } from './data/equipment';
-import { ENCHANTMENT_EFFECTS, calculateEffectCapacityCost } from './data/enchantment-effects';
 import { CRAFTING_RECIPES, canCraftRecipe, type CraftingRecipe } from './data/crafting-recipes';
 
 // ─── Instance/ID Generation ──────────────────────────────────────────────────
@@ -29,10 +28,6 @@ export function getEquipmentType(typeId: string) {
 
 // ─── Capacity Calculation Helpers ────────────────────────────────────────────
 
-export function calculateDesignCapacityCost(effects: DesignEffect[], efficiencyBonus: number = 0): number {
-  return effects.reduce((total, eff) => total + calculateEffectCapacityCost(eff.effectId, eff.stacks, efficiencyBonus), 0);
-}
-
 export function getAvailableCapacity(instance: EquipmentInstance): number {
   return instance.totalCapacity - instance.usedCapacity;
 }
@@ -43,17 +38,6 @@ export function designFitsInEquipment(design: EnchantmentDesign, instance: Equip
 
 // ─── Time Calculation Helpers ────────────────────────────────────────────────
 
-export function calculateDesignTime(effects: DesignEffect[]): number {
-  let time = 1;
-  for (const eff of effects) {
-    const effectDef = ENCHANTMENT_EFFECTS[eff.effectId];
-    if (effectDef) {
-      time += 0.5 * eff.stacks;
-    }
-  }
-  return time;
-}
-
 export function calculatePrepTime(equipmentCapacity: number): number {
   return 2 + Math.floor(equipmentCapacity / 50);
 }

src/lib/game/utils/enemy-utils.ts

@@ -1,10 +1,24 @@
-// ─── Enemy Naming System ───────────────────────────────────────────────
+// ─── Enemy Naming & Swarm Generation ──────────────────────────────────
 // Moved from store-modules/enemy-utils.ts to eliminate legacy dependencies
 
 import type { EnemyState } from '../types';
 import { SWARM_CONFIG } from '../constants';
 import { getFloorMaxHP, getFloorElement } from './floor-utils';
 
+// Barrier elements more likely to have barrier
+const BARRIER_ELEMENTS = ['light', 'water', 'earth'];
+
+// Get barrier for an enemy (0-1 as percentage of max HP)
+function getEnemyBarrier(floor: number, element: string): number {
+  if (floor < 20) return 0;
+  const baseChance = BARRIER_ELEMENTS.includes(element) ? 0.15 : 0.08;
+  const floorBonus = Math.min(0.25, (floor - 20) * 0.003);
+  const barrierChance = Math.min(0.4, baseChance + floorBonus);
+  if (Math.random() > barrierChance) return 0;
+  const floorProgress = Math.min(1, (floor - 20) / 80);
+  return 0.1 + floorProgress * 0.2;
+}
+
 // Enemy names by element and floor tier
 const ENEMY_NAMES_BY_ELEMENT: Record<string, string[]> = {
   fire: ['Fire Imp', 'Flame Sprite', 'Emberling', 'Scorchling', 'Inferno Whelp'],
@@ -49,8 +63,7 @@ export function generateSwarmEnemies(floor: number): EnemyState[] {
       maxHP: Math.floor(baseHP * SWARM_CONFIG.hpMultiplier),
       armor: SWARM_CONFIG.armorBase + Math.floor(floor / 10) * SWARM_CONFIG.armorPerFloor,
       dodgeChance: 0,
-      healthRegen: 0, // Will be set by caller if needed
-      barrier: 0, // Will be set by caller if needed
+      barrier: getEnemyBarrier(floor, element),
       element,
     });
   }

src/lib/game/utils/room-utils.ts

@@ -5,7 +5,7 @@ import type { RoomType, FloorState, EnemyState } from '../types';
 import { GUARDIANS, FLOOR_ELEM_CYCLE, PUZZLE_ROOMS, PUZZLE_ROOM_INTERVAL, PUZZLE_ROOM_CHANCE, SWARM_ROOM_CHANCE, SPEED_ROOM_CHANCE, FLOOR_ARMOR_CONFIG, SWARM_CONFIG, SPEED_ROOM_CONFIG } from '../constants';
 import { getFloorMaxHP } from './floor-utils';
 import { getFloorElement } from './floor-utils';
-import { getEnemyName } from './enemy-utils';
+import { getEnemyName, generateSwarmEnemies } from './enemy-utils';
 
 // Generate room type for a floor
 export function generateRoomType(floor: number): RoomType {
@@ -79,30 +79,6 @@ export function getEnemyBarrier(floor: number, element: string): number {
   return 0.1 + floorProgress * 0.2;
 }
 
-// Generate enemies for a swarm room
-export function generateSwarmEnemies(floor: number): EnemyState[] {
-  const baseHP = getFloorMaxHP(floor);
-  const element = getFloorElement(floor);
-  const numEnemies = SWARM_CONFIG.minEnemies + 
-    Math.floor(Math.random() * (SWARM_CONFIG.maxEnemies - SWARM_CONFIG.minEnemies + 1));
-  
-  const enemies: EnemyState[] = [];
-  for (let i = 0; i < numEnemies; i++) {
-    const enemyName = getEnemyName(element, floor);
-    enemies.push({
-      id: `enemy_${i}`,
-      name: enemyName,
-      hp: Math.floor(baseHP * SWARM_CONFIG.hpMultiplier),
-      maxHP: Math.floor(baseHP * SWARM_CONFIG.hpMultiplier),
-      armor: SWARM_CONFIG.armorBase + Math.floor(floor / 10) * SWARM_CONFIG.armorPerFloor,
-      dodgeChance: 0,
-      barrier: getEnemyBarrier(floor, element),
-      element,
-    });
-  }
-  return enemies;
-}
-
 // Generate initial floor state
 export function generateFloorState(floor: number): FloorState {
   const roomType = generateRoomType(floor);