卦变 (Gua Bian: The Book of Changes)

 (Gua Bian)** 是一款以《周易》六十四卦为核心的**单人回合制卡牌构筑 Roguelite**。

你将扮演一位卜者，持八张经卦牌踏入由天时、九宫战场、命宫上卦构成的「三才」战场。通过自由置卦、择爻出战，在天地变化的缝隙中寻找制胜之道。

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**✨ 核心特色**

🀄 **自由置卦生爻** — 将手牌中的经卦牌放入「命宫」与「上卦位」，两卦重叠化为六爻重卦，再从六爻面板中择爻打出。零探索成本，六十四种重卦组合自由搭配。

🔄 **天时地理实时博弈** — 天时每回合流转于六爻之间。天气（晴/雨/风/雷等六种）五行相生流转。打出天时命中的爻牌触发「卦变」，爻象翻转，卦局重写。天应每六回合爆发一次。九宫地面五行与爻牌五行产生增幅或克制，方位「当位」减费、「失位」加费。

🃏 **八条卦德策略引擎** — 每张经卦有其独特的被动卦德：

> **乾☰健**：连续打出阳爻，后续阳爻费用减免  

> **兑☱悦**：其他经卦回手时额外触发非伤害效果  

> **离☲丽**：灼烧叠加「炎附」标记，叠至5层引爆  

> **震☳动**：每回合首次打出初爻可不消耗经卦牌  

> **巽☴入**：打爻后同经卦随机一爻费用减1  

> **坎☵陷**：受到伤害时可转为「陷伤」延迟至下回合  

> **艮☶止**：本回合不出牌获「山止」，下回合打爻减费  

> **坤☷顺**：回合剩余能量化为不衰减的「厚德格挡」

⚡ **行动队列系统** — 借鉴杀戮尖塔的链式结算：出爻时效果翻译为行动入队，FIFO 执行。Buff、卦德、彖效果可在执行中随时返回新行动追尾入队，层层叠加触发的链式反应自然成立。

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**🗺️ 游戏流程**

七层画爻冒险 → 第七层应卦 Boss 战

| 层 | 爻位 | 节点 |

|----|------|------|

| 1-6 | 初爻 ~ 上爻 | 画爻(选符文) → 萃聚(选牌) / 战斗 / 革鼎(删牌) / 休憩(回血) |

| 7 | — | 临观(Boss预览) → **Boss战** |

每层末尾正途（阳爻）/ 反途（阴爻）分叉，六层全部走完后生成的「最终重卦」决定了第七层 Boss 的属性与强度。

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**🎴 战斗信息**

- 玩家卦气(HP): 60 | 手牌上限: 8 张 | 初始牌库: 8 张

- 初始能量: 3（每回合回满，上限6，下限1）

- 爻费用: 初/二爻=1费，三/四爻=2费，五/上爻=3费

- 6 种天气 + 3 种天气变体

- 5 种原型敌人（卦童/山魈/炎蛇/卦影/残响），支持多敌人同场

- 暂停 + 存档 + 设置（音量/窗口/语言）

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**🏗️ 当前版本：v0.0.0.2 原型**

✅ 最小完整闭环可玩：主菜单 → 七层冒险 → Boss → 胜利

✅ 二进制卦象引擎 | 8经卦×6爻 | 64重卦→8类彖效果

✅ 天时天气系统 | 九宫战场 | 地势方位效果

✅ 战斗七阶段状态机 | 敌人AI（7行为策略×5卦位策略）

✅ 画爻符文系统（阳/阴各12种符文，吉/元吉/大吉三种品质）

✅ BGM+SFX 音频系统

🚧 尚未实现（后续版本）：卦器、消耗品、事件节点、局外成长、图鉴

**反馈即是对这片卦象幻境最大的调整指引！**

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**Gua Bian (The Book of Changes)** is a solo turn-based deckbuilding roguelite rooted in the ancient philosophy of the *I Ching*.

You play as a Diviner, wielding eight Trigrams (3-line cards) across a threefold battlefield — Heaven (dynamic turn rhythms), Earth (a 3×3 tactical grid), and Humanity (your two trigram slots forming a Hexagram). Place Trigrams freely, pick Yao lines to play, and adapt to the ever-shifting tempo of Heaven and the terrain beneath your feet.

**Key Features:**

- **Free Trigram Placement** — Slot any two Trigrams into the Ming Gong and Shang Gua positions to form one of 64 Hexagrams. No exploration cost — experiment freely.

- **Heaven & Earth Interaction** — The Heavenly Stem cycles through 6 Yao positions each turn. Playing the "hit" Yao triggers a trigram mutation. 6 weather types interact with terrain elements in a Wu Xing (Five Phases) cycle.

- **8 Gua De (Trigram Virtues)** — Each Trigram has a unique passive engine: chain Yang plays (Qian), echo card returns (Dui), stack burns to detonate (Li), free first Yao (Zhen), random cost reduction (Xun), delayed damage (Kan), restraint bonus (Gen), persistent block from leftover energy (Kun).

- **Slay-the-Spire-style Action Queue** — Yao effects are translated into GameActions processed FIFO. Buffs, Virtues, and Hexagram effects can inject new actions mid-queue, enabling natural chain reactions.

**7-Layer Adventure**: Each of the 6 layers you choose a Yao Rune (picked from 3 random draws), then navigate through battles, card drafts, card removal, and rest nodes. Your 6 choices form a final Hexagram that shapes the Layer 7 Boss encounter.

**Current state: v0.0.0.2 Early Prototype** — Full core loop playable with 5 enemy types, 8 trigram passives, weather/terrain systems, and AI opponents. Missing: relics, consumables, event nodes, meta-progression.