feat(sim): 전투 규칙을 멀티 몬스터로 (타겟 선택·각자 의도·전체 처치 승리)

2026-06-10 00:52:17 +09:00
parent b14b614d94
commit 4ef3d1811d
2 changed files with 87 additions and 51 deletions
--- a/tools/balance/sim-balance.mjs
+++ b/tools/balance/sim-balance.mjs
@@ -43,36 +43,36 @@ export function applyDamage(hp, block, amount) {
 export function loadData() {
  const cardsData = JSON.parse(readFileSync('data/cards.json', 'utf8'));
  const enemiesData = JSON.parse(readFileSync('data/enemies.json', 'utf8'));
-  const enemy = enemiesData.enemies[enemiesData.activeEnemy];
-  if (!enemy) throw new Error(`activeEnemy 없음: ${enemiesData.activeEnemy}`);
-  return { cards: cardsData.cards, starterDeck: cardsData.starterDeck, enemy };
+  const ids = enemiesData.simEncounter || [enemiesData.activeEnemy];
+  const monsters = ids.map((id) => {
+    const e = enemiesData.enemies[id];
+    if (!e) throw new Error(`simEncounter 적 없음: ${id}`);
+    return { name: e.name, maxHp: e.maxHp, intents: e.intents };
+  });
+  return { cards: cardsData.cards, starterDeck: cardsData.starterDeck, monsters };
 }

-// 손패에서 다음에 낼 카드의 인덱스 반환(-1=턴 종료). hand=카드 id 배열.
-export function chooseAction(hand, cards, energy, enemyHp, enemyBlock, enemyIntent) {
+// 손패에서 낼 카드 인덱스(-1=종료). 공격 우선, 없으면 스킬.
+export function chooseAction(hand, cards, energy) {
  const entries = hand.map((id, i) => ({ id, i })).filter((x) => cards[x.id].cost <= energy);
  const attacks = entries.filter((x) => cards[x.id].kind === 'Attack');
  const skills = entries.filter((x) => cards[x.id].kind === 'Skill');
  const dmgEff = (x) => (cards[x.id].damage || 0) / cards[x.id].cost;
  const blkEff = (x) => (cards[x.id].block || 0) / cards[x.id].cost;
  const bestBy = (list, fn) => list.slice().sort((a, b) => fn(b) - fn(a))[0];
-
-  // 1) 치사: 에너지 한도 내 효율순 공격 데미지 합 >= 적 유효 hp?
-  let e = energy, lethalDmg = 0;
-  for (const x of attacks.slice().sort((a, b) => dmgEff(b) - dmgEff(a))) {
-    if (cards[x.id].cost <= e) { e -= cards[x.id].cost; lethalDmg += cards[x.id].damage || 0; }
-  }
-  if (attacks.length && lethalDmg >= enemyHp + enemyBlock) return bestBy(attacks, dmgEff).i;
-
-  // 2) 적 공격 의도면 방어 우선
-  if (enemyIntent && enemyIntent.kind === 'Attack' && skills.length) return bestBy(skills, blkEff).i;
-
-  // 3) 공격 우선, 없으면 스킬, 없으면 종료
  if (attacks.length) return bestBy(attacks, dmgEff).i;
  if (skills.length) return bestBy(skills, blkEff).i;
  return -1;
 }

+// 공격 타겟 선택: 이번 타격으로 처치 가능한 최소 유효체력, 없으면 유효체력 최소.
+export function chooseTarget(aliveMonsters, plannedDamage) {
+  const eff = (m) => m.hp + m.block;
+  const killable = aliveMonsters.filter((m) => eff(m) <= plannedDamage);
+  const pool = killable.length ? killable : aliveMonsters;
+  return pool.slice().sort((a, b) => eff(a) - eff(b))[0];
+}
+
 function bump(s, cost, dmg, blk) {
  s = s || { plays: 0, energy: 0, damage: 0, block: 0 };
  s.plays++; s.energy += cost; s.damage += dmg; s.block += blk;
@@ -82,12 +82,15 @@ function bump(s, cost, dmg, blk) {
 // 단일 전투 시뮬. stats(선택): {cardId: {plays,energy,damage,block}} 누적.
 // 반환: { win, turns, playerHpRemaining, draw? }
 export function simulateCombat(data, rng, stats) {
-  const { cards, starterDeck, enemy } = data;
+  const { cards, starterDeck, monsters } = data;
  let drawPile = shuffle(starterDeck, rng);
  let discard = [];
  let hand = [];
  let pHp = PLAYER_HP, pBlock = 0;
-  let eHp = enemy.maxHp, eBlock = 0, intentIdx = 0;
+  const mob = monsters.map((m) => ({
+    name: m.name, hp: m.maxHp, maxHp: m.maxHp, block: 0,
+    intents: m.intents, intentIdx: 0, alive: true,
+  }));
  let turns = 0;

  function draw(n) {
@@ -97,33 +100,43 @@ export function simulateCombat(data, rng, stats) {
      hand.push(drawPile.pop());
    }
  }
+  const aliveList = () => mob.filter((m) => m.alive);

  while (turns < MAX_TURNS) {
    turns++;
    let energy = ENERGY; pBlock = 0; hand = []; draw(HAND_SIZE);
    while (true) {
-      const intent = enemy.intents[intentIdx];
-      const idx = chooseAction(hand, cards, energy, eHp, eBlock, intent);
+      const alive = aliveList();
+      if (alive.length === 0) break;
+      const idx = chooseAction(hand, cards, energy);
      if (idx < 0) break;
      const id = hand[idx], c = cards[id];
      energy -= c.cost;
      if (c.kind === 'Attack') {
-        const r = applyDamage(eHp, eBlock, c.damage || 0); eHp = r.hp; eBlock = r.block;
+        const target = chooseTarget(alive, c.damage || 0);
+        const r = applyDamage(target.hp, target.block, c.damage || 0);
+        target.hp = r.hp; target.block = r.block;
+        if (target.hp <= 0) target.alive = false;
        if (stats) stats[id] = bump(stats[id], c.cost, c.damage || 0, 0);
      } else {
        pBlock += c.block || 0;
        if (stats) stats[id] = bump(stats[id], c.cost, 0, c.block || 0);
      }
      hand.splice(idx, 1); discard.push(id);
-      if (eHp <= 0) return { win: true, turns, playerHpRemaining: pHp };
+      if (aliveList().length === 0) return { win: true, turns, playerHpRemaining: pHp };
    }
    discard.push(...hand); hand = [];
-    eBlock = 0;
-    const intent = enemy.intents[intentIdx];
-    if (intent.kind === 'Attack') { const r = applyDamage(pHp, pBlock, intent.value); pHp = r.hp; pBlock = r.block; }
-    else if (intent.kind === 'Defend') { eBlock += intent.value; }
-    intentIdx = (intentIdx + 1) % enemy.intents.length;
-    if (pHp <= 0) return { win: false, turns, playerHpRemaining: 0 };
+    for (const m of mob) {
+      if (!m.alive) continue;
+      m.block = 0;
+      const it = m.intents[m.intentIdx];
+      if (it) {
+        if (it.kind === 'Attack') { const r = applyDamage(pHp, pBlock, it.value); pHp = r.hp; pBlock = r.block; }
+        else if (it.kind === 'Defend') { m.block += it.value; }
+      }
+      m.intentIdx = (m.intentIdx + 1) % m.intents.length;
+      if (pHp <= 0) return { win: false, turns, playerHpRemaining: 0 };
+    }
  }
  return { win: false, turns, playerHpRemaining: pHp, draw: true };
 }
@@ -152,13 +165,13 @@ export function runBatch(N, seed) {
    winRate: wins / N,
    avgTurns: mean(turnsArr), medianTurns: median(turnsArr),
    avgHpOnWin: mean(hpArr),
-    cardStats, cards: data.cards, enemy: data.enemy, seed,
+    cardStats, cards: data.cards, monsters: data.monsters, seed,
  };
 }

 export function formatReport(r) {
  const L = [];
-  L.push(`=== 밸런스 시뮬레이션 (적: ${r.enemy.name} HP ${r.enemy.maxHp}) ===`);
+  L.push(`=== 밸런스 시뮬레이션 (인카운터: ${r.monsters.map((m) => `${m.name}(${m.maxHp})`).join(', ')}) ===`);
  L.push(`시뮬 ${r.N}회 (seed=${r.seed})`);
  L.push(`승률: ${(r.winRate * 100).toFixed(1)}%  (승 ${r.wins} / 패 ${r.losses}${r.draws ? ` / 무 ${r.draws}` : ''})`);
  L.push(`평균 턴: ${r.avgTurns.toFixed(2)}  중앙값 턴: ${r.medianTurns}`);
--- a/tools/balance/sim-balance.test.mjs
+++ b/tools/balance/sim-balance.test.mjs
@@ -1,7 +1,7 @@
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
 import {
-  mulberry32, applyDamage, chooseAction, simulateCombat, runBatch,
+  mulberry32, applyDamage, chooseAction, chooseTarget, simulateCombat, runBatch,
 } from './sim-balance.mjs';

 test('applyDamage: 방어 우선 차감 후 hp', () => {
@@ -23,34 +23,46 @@ const CARDS = {
  Bash: { name: '강타', cost: 2, kind: 'Attack', damage: 10 },
 };

-test('chooseAction: 치사 가능하면 공격 선택', () => {
-  const idx = chooseAction(['Strike', 'Defend'], CARDS, 3, 5, 0, { kind: 'Attack', value: 10 });
+test('chooseAction: 공격을 스킬보다 먼저 선택', () => {
+  const idx = chooseAction(['Defend', 'Strike'], CARDS, 3);
+  assert.equal(idx, 1); // Strike
+});
+
+test('chooseAction: 공격 없으면 스킬 선택', () => {
+  const idx = chooseAction(['Defend'], CARDS, 3);
  assert.equal(idx, 0);
 });

-test('chooseAction: 치사 불가 + 적 공격 의도면 방어 선택', () => {
-  const idx = chooseAction(['Strike', 'Defend'], CARDS, 3, 40, 0, { kind: 'Attack', value: 10 });
-  assert.equal(idx, 1);
-});
-
-test('chooseAction: 적 방어 의도면 공격 우선', () => {
-  const idx = chooseAction(['Defend', 'Strike'], CARDS, 3, 40, 0, { kind: 'Defend', value: 8 });
-  assert.equal(idx, 1);
-});
-
 test('chooseAction: 사용 가능 카드 없으면 -1', () => {
-  const idx = chooseAction(['Bash'], CARDS, 1, 40, 0, { kind: 'Attack', value: 10 });
+  const idx = chooseAction(['Bash'], CARDS, 1);
  assert.equal(idx, -1);
 });

+test('chooseTarget: 이번 타격으로 처치 가능한 최소 체력 우선', () => {
+  const mob = [
+    { hp: 20, block: 0, alive: true },
+    { hp: 5, block: 0, alive: true },
+    { hp: 8, block: 0, alive: true },
+  ];
+  assert.equal(chooseTarget(mob, 6), mob[1]); // 5<=6 처치 가능, 최소
+});
+
+test('chooseTarget: 처치 불가면 유효체력 최소 선택', () => {
+  const mob = [
+    { hp: 20, block: 0, alive: true },
+    { hp: 12, block: 5, alive: true },
+    { hp: 14, block: 0, alive: true },
+  ];
+  assert.equal(chooseTarget(mob, 6), mob[2]); // 유효 14 < 17 < 20
+});
+
 const DATA = {
  cards: CARDS,
  starterDeck: ['Strike', 'Strike', 'Strike', 'Strike', 'Strike', 'Defend', 'Defend', 'Defend', 'Defend', 'Bash'],
-  enemy: {
-    name: '슬라임', maxHp: 45, intents: [
-      { kind: 'Attack', value: 10 }, { kind: 'Attack', value: 6 }, { kind: 'Defend', value: 8 },
-    ],
-  },
+  monsters: [
+    { name: '주황버섯', maxHp: 16, intents: [{ kind: 'Attack', value: 5 }, { kind: 'Defend', value: 4 }] },
+    { name: '파란버섯', maxHp: 12, intents: [{ kind: 'Attack', value: 8 }] },
+  ],
 };

 test('simulateCombat: 결정적 결과(동일 시드)', () => {
@@ -61,12 +73,23 @@ test('simulateCombat: 결정적 결과(동일 시드)', () => {
  assert.ok(r1.turns >= 1);
 });

-test('simulateCombat: 약한 적이면 대체로 승리', () => {
+test('simulateCombat: 모든 몬스터 처치 시 승리', () => {
  let wins = 0;
  for (let i = 0; i < 50; i++) if (simulateCombat(DATA, mulberry32(i + 1)).win) wins++;
  assert.ok(wins >= 40, `예상 승리 다수, 실제 ${wins}/50`);
 });

+test('simulateCombat: 강한 다수 적이면 패배 가능', () => {
+  const hard = {
+    cards: CARDS,
+    starterDeck: DATA.starterDeck,
+    monsters: Array.from({ length: 4 }, () => ({ name: '슬라임', maxHp: 60, intents: [{ kind: 'Attack', value: 12 }] })),
+  };
+  let losses = 0;
+  for (let i = 0; i < 30; i++) if (!simulateCombat(hard, mulberry32(i + 1)).win) losses++;
+  assert.ok(losses >= 1, `강한 적엔 패배가 나와야 함, 실제 패 ${losses}/30`);
+});
+
 test('runBatch: 집계 필드·승률 범위', () => {
  const r = runBatch(100, 1);
  assert.equal(r.N, 100);