feat: scale adventurer tier costs progressively

Each adventurer tier now has a unique baseCost that scales ~7x per
tier (L1: 10 → L32: ~2.5e27). The per-count scaling factor (1.15×)
is unchanged.

Closes #10

apps/api/src/data/adventurers.ts

@@ -6,6 +6,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Peasant",
     class: "warrior",
     level: 1,
+    baseCost: 10,
     goldPerSecond: 0.1,
     essencePerSecond: 0,
     combatPower: 1,
@@ -17,6 +18,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Militia",
     class: "warrior",
     level: 2,
+    baseCost: 100,
     goldPerSecond: 0.5,
     essencePerSecond: 0,
     combatPower: 3,
@@ -28,6 +30,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Apprentice Mage",
     class: "mage",
     level: 3,
+    baseCost: 750,
     goldPerSecond: 1.5,
     essencePerSecond: 0.01,
     combatPower: 8,
@@ -39,6 +42,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Scout",
     class: "rogue",
     level: 4,
+    baseCost: 5_000,
     goldPerSecond: 4,
     essencePerSecond: 0.02,
     combatPower: 20,
@@ -50,6 +54,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Acolyte",
     class: "cleric",
     level: 5,
+    baseCost: 35_000,
     goldPerSecond: 10,
     essencePerSecond: 0.05,
     combatPower: 50,
@@ -61,6 +66,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Ranger",
     class: "ranger",
     level: 6,
+    baseCost: 250_000,
     goldPerSecond: 25,
     essencePerSecond: 0.1,
     combatPower: 120,
@@ -72,6 +78,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Knight",
     class: "warrior",
     level: 7,
+    baseCost: 1_750_000,
     goldPerSecond: 75,
     essencePerSecond: 0.2,
     combatPower: 300,
@@ -83,6 +90,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Archmage",
     class: "mage",
     level: 8,
+    baseCost: 12_000_000,
     goldPerSecond: 200,
     essencePerSecond: 0.5,
     combatPower: 800,
@@ -94,6 +102,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Paladin",
     class: "paladin",
     level: 9,
+    baseCost: 85_000_000,
     goldPerSecond: 600,
     essencePerSecond: 1,
     combatPower: 2000,
@@ -105,6 +114,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Dragon Rider",
     class: "ranger",
     level: 10,
+    baseCost: 600_000_000,
     goldPerSecond: 2000,
     essencePerSecond: 3,
     combatPower: 6000,
@@ -116,6 +126,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Shadow Assassin",
     class: "rogue",
     level: 11,
+    baseCost: 4_000_000_000,
     goldPerSecond: 5_000,
     essencePerSecond: 6,
     combatPower: 18_000,
@@ -127,6 +138,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Arcane Scholar",
     class: "mage",
     level: 12,
+    baseCost: 28_000_000_000,
     goldPerSecond: 14_000,
     essencePerSecond: 15,
     combatPower: 45_000,
@@ -138,6 +150,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Void Walker",
     class: "rogue",
     level: 13,
+    baseCost: 200_000_000_000,
     goldPerSecond: 40_000,
     essencePerSecond: 35,
     combatPower: 130_000,
@@ -149,6 +162,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Celestial Guard",
     class: "paladin",
     level: 14,
+    baseCost: 1_400_000_000_000,
     goldPerSecond: 120_000,
     essencePerSecond: 100,
     combatPower: 400_000,
@@ -160,6 +174,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Divine Champion",
     class: "warrior",
     level: 15,
+    baseCost: 10_000_000_000_000,
     goldPerSecond: 400_000,
     essencePerSecond: 300,
     combatPower: 1_200_000,
@@ -171,6 +186,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Seraph Knight",
     class: "paladin",
     level: 16,
+    baseCost: 70_000_000_000_000,
     goldPerSecond: 1_200_000,
     essencePerSecond: 800,
     combatPower: 4_000_000,
@@ -182,6 +198,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Abyss Diver",
     class: "rogue",
     level: 17,
+    baseCost: 500_000_000_000_000,
     goldPerSecond: 3_500_000,
     essencePerSecond: 2_000,
     combatPower: 12_000_000,
@@ -193,6 +210,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Infernal Warden",
     class: "warrior",
     level: 18,
+    baseCost: 3_500_000_000_000_000,
     goldPerSecond: 10_000_000,
     essencePerSecond: 5_000,
     combatPower: 35_000_000,
@@ -204,6 +222,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Crystal Sage",
     class: "mage",
     level: 19,
+    baseCost: 25_000_000_000_000_000,
     goldPerSecond: 30_000_000,
     essencePerSecond: 12_000,
     combatPower: 100_000_000,
@@ -215,6 +234,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Void Sentinel",
     class: "rogue",
     level: 20,
+    baseCost: 175_000_000_000_000_000,
     goldPerSecond: 90_000_000,
     essencePerSecond: 30_000,
     combatPower: 300_000_000,
@@ -226,6 +246,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Eternal Champion",
     class: "warrior",
     level: 21,
+    baseCost: 1_200_000_000_000_000_000,
     goldPerSecond: 270_000_000,
     essencePerSecond: 80_000,
     combatPower: 900_000_000,
@@ -237,6 +258,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Aether Weaver",
     class: "mage",
     level: 22,
+    baseCost: 8_500_000_000_000_000_000,
     goldPerSecond: 800_000_000,
     essencePerSecond: 220_000,
     combatPower: 2_700_000_000,
@@ -248,6 +270,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Titan Warrior",
     class: "warrior",
     level: 23,
+    baseCost: 60_000_000_000_000_000_000,
     goldPerSecond: 2_500_000_000,
     essencePerSecond: 600_000,
     combatPower: 8_000_000_000,
@@ -259,6 +282,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Nexus Sage",
     class: "mage",
     level: 24,
+    baseCost: 420_000_000_000_000_000_000,
     goldPerSecond: 7_500_000_000,
     essencePerSecond: 1_600_000,
     combatPower: 24_000_000_000,
@@ -270,6 +294,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Cosmos Knight",
     class: "paladin",
     level: 25,
+    baseCost: 3_000_000_000_000_000_000_000,
     goldPerSecond: 22_000_000_000,
     essencePerSecond: 4_500_000,
     combatPower: 72_000_000_000,
@@ -281,6 +306,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Astral Sovereign",
     class: "warrior",
     level: 26,
+    baseCost: 21_000_000_000_000_000_000_000,
     goldPerSecond: 65_000_000_000,
     essencePerSecond: 12_000_000,
     combatPower: 200_000_000_000,
@@ -292,6 +318,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Primordial Mage",
     class: "mage",
     level: 27,
+    baseCost: 150_000_000_000_000_000_000_000,
     goldPerSecond: 200_000_000_000,
     essencePerSecond: 35_000_000,
     combatPower: 600_000_000_000,
@@ -303,6 +330,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Reality Warden",
     class: "paladin",
     level: 28,
+    baseCost: 1_000_000_000_000_000_000_000_000,
     goldPerSecond: 600_000_000_000,
     essencePerSecond: 100_000_000,
     combatPower: 1_800_000_000_000,
@@ -314,6 +342,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Infinity Ranger",
     class: "ranger",
     level: 29,
+    baseCost: 7_000_000_000_000_000_000_000_000,
     goldPerSecond: 1_800_000_000_000,
     essencePerSecond: 300_000_000,
     combatPower: 5_500_000_000_000,
@@ -325,6 +354,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Oblivion Paladin",
     class: "paladin",
     level: 30,
+    baseCost: 50_000_000_000_000_000_000_000_000,
     goldPerSecond: 5_500_000_000_000,
     essencePerSecond: 850_000_000,
     combatPower: 16_000_000_000_000,
@@ -336,6 +366,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Transcendent Rogue",
     class: "rogue",
     level: 31,
+    baseCost: 350_000_000_000_000_000_000_000_000,
     goldPerSecond: 16_000_000_000_000,
     essencePerSecond: 2_500_000_000,
     combatPower: 50_000_000_000_000,
@@ -347,6 +378,7 @@ export const DEFAULT_ADVENTURERS: Adventurer[] = [
     name: "Omniversal Champion",
     class: "warrior",
     level: 32,
+    baseCost: 2_500_000_000_000_000_000_000_000_000,
     goldPerSecond: 50_000_000_000_000,
     essencePerSecond: 7_000_000_000,
     combatPower: 150_000_000_000_000,

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

@@ -18,7 +18,7 @@ const BATCH_OPTIONS: BatchSize[] = [1, 5, 10, 25, 100, "max"];
 const computeBatchCost = (adventurer: Adventurer, quantity: number): number => {
   let total = 0;
   for (let i = 0; i < quantity; i++) {
-    total += 10 * Math.pow(1.15, adventurer.count + i);
+    total += adventurer.baseCost * Math.pow(1.15, adventurer.count + i);
   }
   return total;
 };
@@ -27,7 +27,7 @@ const computeMaxAffordable = (adventurer: Adventurer, gold: number): number => {
   let total = 0;
   let quantity = 0;
   for (let i = 0; i < 100_000; i++) {
-    const cost = 10 * Math.pow(1.15, adventurer.count + i);
+    const cost = adventurer.baseCost * Math.pow(1.15, adventurer.count + i);
     if (total + cost > gold) break;
     total += cost;
     quantity++;

apps/web/src/context/GameContext.tsx

@@ -450,7 +450,7 @@ export const GameProvider = ({ children }: { children: React.ReactNode }): React
       let purchased = 0;
 
       for (let i = 0; i < quantity; i++) {
-        const cost = 10 * Math.pow(1.15, count);
+        const cost = adventurer.baseCost * Math.pow(1.15, count);
         if (gold < cost) break;
         gold -= cost;
         count++;

packages/types/src/interfaces/Adventurer.ts

@@ -11,6 +11,8 @@ export interface Adventurer {
   name: string;
   class: AdventurerClass;
   level: number;
+  /** Base cost for the first purchase of this tier (scales by 1.15× per count) */
+  baseCost: number;
   /** Base gold generated per second */
   goldPerSecond: number;
   /** Base essence generated per second */