fix: show effective post-multiplier stats on adventurer cards (#154)

Adds computeEffectiveAdventurerStats to tick.ts to calculate per-unit
gold/s, essence/s, and combat power with all active multipliers applied
(upgrades, prestige, equipment, echo, crafted, companions). Updates
AdventurerCard to display these effective values so players can see the
true contribution of each adventurer rather than raw base stats.

apps/web/src/components/game/adventurerPanel.tsx

@@ -9,6 +9,7 @@
 /* eslint-disable complexity -- Complex component with many render paths */
 import { type JSX, useState } from "react";
 import { useGame } from "../../context/gameContext.js";
+import { computeEffectiveAdventurerStats } from "../../engine/tick.js";
 import { cdnImage } from "../../utils/cdn.js";
 import { LockToggle } from "../ui/lockToggle.js";
 import type { Adventurer } from "@elysium/types";
@@ -76,12 +77,19 @@ const computeMaxAffordable = (adventurer: Adventurer, gold: number): number => {
   return quantity;
 };
 
+interface EffectiveAdventurerStats {
+  readonly combatPower:      number;
+  readonly essencePerSecond: number;
+  readonly goldPerSecond:    number;
+}
+
 interface AdventurerCardProperties {
-  readonly adventurer:   Adventurer;
-  readonly currentGold:  number;
-  readonly batchSize:    BatchSize;
-  readonly unlockHint:   string | undefined;
-  readonly formatNumber: (n: number)=> string;
+  readonly adventurer:     Adventurer;
+  readonly currentGold:    number;
+  readonly batchSize:      BatchSize;
+  readonly unlockHint:     string | undefined;
+  readonly formatNumber:   (n: number)=> string;
+  readonly effectiveStats: EffectiveAdventurerStats;
 }
 
 /**
@@ -92,6 +100,7 @@ interface AdventurerCardProperties {
  * @param props.batchSize - The selected batch size.
  * @param props.unlockHint - Optional quest name that unlocks this adventurer.
  * @param props.formatNumber - The number formatting utility function.
+ * @param props.effectiveStats - The post-multiplier per-unit stats.
  * @returns The JSX element.
  */
 const AdventurerCard = ({
@@ -100,6 +109,7 @@ const AdventurerCard = ({
   batchSize,
   unlockHint,
   formatNumber,
+  effectiveStats,
 }: AdventurerCardProperties): JSX.Element => {
   const { buyAdventurer } = useGame();
 
@@ -134,17 +144,17 @@ const AdventurerCard = ({
       <div className="adventurer-info">
         <h3>{adventurer.name}</h3>
         <p>
-          {formatNumber(adventurer.goldPerSecond)}
+          {formatNumber(effectiveStats.goldPerSecond)}
           {" gold/s each"}
         </p>
         {adventurer.essencePerSecond > 0
           && <p>
-            {formatNumber(adventurer.essencePerSecond)}
+            {formatNumber(effectiveStats.essencePerSecond)}
             {" essence/s each"}
           </p>
         }
         <p>
-          {formatNumber(adventurer.combatPower)}
+          {formatNumber(effectiveStats.combatPower)}
           {" combat power each"}
         </p>
       </div>
@@ -280,6 +290,10 @@ const AdventurerPanel = (): JSX.Element => {
               adventurer={adventurer}
               batchSize={batchSize}
               currentGold={state.resources.gold}
+              effectiveStats={computeEffectiveAdventurerStats(
+                state,
+                adventurer.id,
+              )}
               formatNumber={formatNumber}
               key={adventurer.id}
               unlockHint={adventurerUnlockHints.get(adventurer.id)}

apps/web/src/engine/tick.ts

@@ -243,6 +243,118 @@ export const computeEssencePerSecond = (state: GameState): number => {
   return essencePerSecond;
 };
 
+/**
+ * Computes the effective per-unit stats for a single adventurer type,
+ * applying all active multipliers (upgrades, prestige, equipment, echo,
+ * crafted, companion). The returned values represent what a single
+ * adventurer of this type currently contributes per second, matching the
+ * per-unit contribution used by computeGoldPerSecond and
+ * computeEssencePerSecond.
+ * @param state - The current game state.
+ * @param adventurerId - The ID of the adventurer to compute stats for.
+ * @returns Effective per-unit goldPerSecond, essencePerSecond, and combatPower.
+ */
+export const computeEffectiveAdventurerStats = (
+  state:        GameState,
+  adventurerId: string,
+): { combatPower: number; essencePerSecond: number; goldPerSecond: number } => {
+  const adventurer = state.adventurers.find((a) => {
+    return a.id === adventurerId;
+  });
+
+  /* V8 ignore next 3 -- @preserve */
+  if (adventurer === undefined) {
+    return { combatPower: 0, essencePerSecond: 0, goldPerSecond: 0 };
+  }
+
+  const upgradeMultiplier = state.upgrades.
+    filter((upgrade) => {
+      const isGlobal = upgrade.target === "global";
+      const isThisAdventurer
+        = upgrade.target === "adventurer"
+        && upgrade.adventurerId === adventurerId;
+      return upgrade.purchased && (isGlobal || isThisAdventurer);
+    }).
+    reduce((mult, upgrade) => {
+      return mult * upgrade.multiplier;
+    }, 1);
+
+  const equippedItems = state.equipment.filter((item) => {
+    return item.equipped;
+  });
+  const equipmentGoldMultiplier = equippedItems.reduce((mult, item) => {
+    return mult * (item.bonus.goldMultiplier ?? 1);
+  }, 1);
+  const equipmentCombatMultiplier = equippedItems.reduce((mult, item) => {
+    return mult * (item.bonus.combatMultiplier ?? 1);
+  }, 1);
+  const equippedItemIds = equippedItems.map((item) => {
+    return item.id;
+  });
+  const setBonuses = computeSetBonuses(equippedItemIds, EQUIPMENT_SETS);
+
+  const runestonesIncome = state.prestige.runestonesIncomeMultiplier ?? 1;
+  const runestonesEssence = state.prestige.runestonesEssenceMultiplier ?? 1;
+  // eslint-disable-next-line stylistic/no-mixed-operators -- prestige count * factor is clear
+  const prestigeCombatMultiplier = 1 + state.prestige.count * 0.1;
+  const echoIncome = state.transcendence?.echoIncomeMultiplier ?? 1;
+  const echoCombatMultiplier = state.transcendence?.echoCombatMultiplier ?? 1;
+  const craftedGoldMultiplier
+    = state.exploration?.craftedGoldMultiplier ?? 1;
+  const craftedEssenceMultiplier
+    = state.exploration?.craftedEssenceMultiplier ?? 1;
+  const craftedCombatMultiplier
+    = state.exploration?.craftedCombatMultiplier ?? 1;
+
+  const companionBonus = getActiveCompanionBonus(
+    state.companions?.activeCompanionId,
+    state.companions?.unlockedCompanionIds ?? [],
+  );
+  const companionGoldMult
+    = companionBonus?.type === "passiveGold"
+      ? 1 + companionBonus.value
+      : 1;
+  const companionEssenceMult
+    = companionBonus?.type === "essenceIncome"
+      ? 1 + companionBonus.value
+      : 1;
+  const companionCombatMult
+    = companionBonus?.type === "bossDamage"
+      ? 1 + companionBonus.value
+      : 1;
+
+  const goldPerSecond
+    = adventurer.goldPerSecond
+    * upgradeMultiplier
+    * state.prestige.productionMultiplier
+    * runestonesIncome
+    * echoIncome
+    * equipmentGoldMultiplier
+    * setBonuses.goldMultiplier
+    * craftedGoldMultiplier
+    * companionGoldMult;
+
+  const essencePerSecond
+    = adventurer.essencePerSecond
+    * upgradeMultiplier
+    * state.prestige.productionMultiplier
+    * runestonesEssence
+    * craftedEssenceMultiplier
+    * companionEssenceMult;
+
+  const combatPower
+    = adventurer.combatPower
+    * upgradeMultiplier
+    * prestigeCombatMultiplier
+    * equipmentCombatMultiplier
+    * setBonuses.combatMultiplier
+    * echoCombatMultiplier
+    * craftedCombatMultiplier
+    * companionCombatMult;
+
+  return { combatPower, essencePerSecond, goldPerSecond };
+};
+
 /**
  * Computes the party's total combat power, applying all active multipliers
  * (upgrades, prestige, equipment, set bonuses, echo, crafted, companion).