types.ts

export enum GameState {
  MENU,
  BOND_SELECTION, // ⭐ 新增：羁绊选择界面
  PLAYING,
  PAUSED_LEVEL_UP,
  GAME_OVER,
  VICTORY
}

export enum CharacterId {
  REIMU = 'reimu',
  MOKOU = 'mokou',
  MARISA = 'marisa',
  SAKUYA = 'sakuya',
  YUMA = 'yuma',
  KOISHI = 'koishi'
}

export interface CharacterPhysics {
  mass: number;                 // 质量（影响击退，10-100）
  friction: number;             // 摩擦力（0.05-0.2）
  hitboxScale: number;          // 判定倍率（0.8-1.2）
  immuneToOilSlow: boolean;     // 免疫油渍减速
  healInFire: boolean;          // 火中回血
  immuneToKnockback: boolean;   // 免疫击退
  canPassThroughEnemies: boolean; // 穿过敌人
}

export interface CharacterConfig {
  id: CharacterId;
  name: string;
  title: string;
  description: string;
  color: string;
  stats: PlayerStats;
  physics: CharacterPhysics;
  startingWeaponId: string;
}

export interface PlayerStats {
  maxHp: number;
  hp: number;
  speed: number;
  might: number;        // Damage multiplier
  area: number;         // Size multiplier
  cooldown: number;     // 0.0 to 1.0 (multiplier)
  pickupRange: number;
  luck: number;
  armor: number;
  recovery: number;     // HP regen per sec
  revivals: number;     // Lives
}

export interface Vector2 {
  x: number;
  y: number;
}

export interface Entity {
  id: string;
  position: Vector2;
  velocity: Vector2;
  radius: number;
  color: string;
  sprite?: string; 
}

export interface Enemy extends Entity {
  hp: number;
  maxHp: number;
  damage: number;
  speed: number;
  type: 'fairy' | 'ghost' | 'boss' | 'slime' | 'elf';
  exp: number; // ⭐ Added to match GameCanvas usage
  frozen: number; // Frames frozen
  // Bouncing properties for slime-type enemies
  bounceTimer?: number;
  bounceHeight?: number;
  isJumping?: boolean;
  // Shooting properties for elf-type enemies
  shootTimer?: number;
  // Boss properties
  isBoss?: boolean;
  bossName?: string;
  bossType?: 'cirno' | 'youmu' | 'kaguya';
  attackPattern?: number;
  patternTimer?: number;
  // Status effects
  burnDuration?: number; // Frames of burn remaining
  burnDamage?: number; // Burn damage per tick
  poisonDuration?: number; // Frames of poison remaining
  poisonDamage?: number; // Poison damage per tick
  stunDuration?: number; // Frames of stun remaining
  // ⭐ 元素附魔状态
  iceLayers?: number; // 冰霜层数（3层冻结）
  poisonStacks?: number; // 毒层数（影响易伤）
  gravitySuckDuration?: number; // 引力吸附剩余时间
  gravitySuckPoint?: Vector2; // 引力吸附中心点
}

export interface Gem extends Entity {
  value: number;
  exp: number; // ⭐ Added to match GameCanvas usage
  type: 'small' | 'medium' | 'large';
}

// ⭐ 元素掉落物 - 一次性永久附魔道具
export type ElementType = 'fire' | 'ice' | 'poison' | 'oil' | 'lightning' | 'gravity';

export interface ElementDrop extends Entity {
  elementType: ElementType;
  itemName: string; // 道具名称（如"琪露诺喝剩的水"）
  itemDescription: string; // 道具描述
}

export interface DamageNumber {
  id: string;
  position: Vector2;
  value: number;
  life: number; // frames
  isCrit: boolean;
}

// ⭐ 地面效果区域（油渍、火焰区域等）
export interface GroundEffect {
  id: string;
  position: Vector2;
  radius: number;
  duration: number; // frames remaining
  maxDuration: number;
  type: 'oil' | 'fire';
  slowAmount?: number; // For oil
  damage?: number; // For fire
}

export interface Weapon {
  id: string;
  name: string;
  description: string;
  level: number;
  maxLevel: number;
  cooldownTimer: number;
  cooldownMax: number; // in frames (60fps)
  baseDamage: number;
  exclusiveTo?: CharacterId; // If set, only this char can find it
  type: 'projectile' | 'aura' | 'orbital' | 'laser' | 'dash' | 'special' | 'passive';
  onFire: (source: Vector2, target: Vector2 | null, stats: PlayerStats, time: number) => Projectile[];
  // 技能升级选项
  upgrades?: string[]; // 已选择的升级ID列表（3/5/7级的特殊升级）
  // 通用升级统计
  damageBonus?: number; // 伤害加成倍数
  cooldownBonus?: number; // 冷却减少倍数
  areaBonus?: number; // 范围加成倍数
  countBonus?: number; // 数量加成
  speedBonus?: number; // 速度加成倍数
  // ⭐ 符卡标记
  isSpellCard?: boolean; // 是否是融合后的符卡武器
}

// 技能升级选项
export interface WeaponUpgradeChoice {
  id: string;
  weaponId: string;
  name: string;
  description: string;
  icon: string;
  tier: number; // 1, 2, 3 对应三次升级
}

export interface Projectile extends Entity {
  damage: number;
  duration: number; // frames
  maxDuration: number;
  penetration: number;
  knockback: number;
  homingStrength?: number; // 0 to 1
  returnToPlayer?: boolean; // Boomerang
  orbitSpeed?: number; // Orbital
  orbitRadius?: number;
  orbitAngle?: number;
  isLaser?: boolean; // Raycast
  isBlackHole?: boolean; // Pulls enemies
  isTimeStop?: boolean; // Freezes enemies
  onHitEffect?: 'freeze' | 'explode' | 'split' | 'heal' | 'burn' | 'poison' | 'stun' | 'slow';
  isEnemyProjectile?: boolean; // True for enemy bullets
  invisible?: boolean; // 隐形碰撞体，不渲染但有伤害判定
  useFlameParticle?: boolean; // 使用火焰粒子特效代替普通渲染
  // Special mechanics
  splitCount?: number; // Number of projectiles to split into
  splitAngleSpread?: number; // Angle spread for split projectiles
  bounceCount?: number; // Number of times to bounce between enemies
  chainCount?: number; // Number of enemies to chain to
  chainRange?: number; // Range for chain lightning
  burnDuration?: number; // Frames of burn effect
  burnDamage?: number; // Burn damage per tick
  poisonDuration?: number; // Frames of poison effect
  poisonDamage?: number; // Poison damage per tick
  stunDuration?: number; // Frames of stun effect
  healAmount?: number; // HP to heal on hit
  explosionRadius?: number; // Radius of explosion on hit/expiry
  explosionDamage?: number; // Damage of explosion
  bouncedEnemies?: Set<string>; // Track which enemies were already bounced to
  chainedEnemies?: Set<string>; // Track which enemies were already chained to
  weaponId?: string; // Track which weapon spawned this (for upgrade checks)
  // ⭐ 元素附魔
  element?: ElementType; // 弹幕附带的元素
  // ⭐ 特殊效果
  hasGravity?: boolean; // 受重力影响（抛物线）
  onDeathEffect?: 'explode'; // 消失时触发的效果
  slowDuration?: number; // Lv.3鸡尾酒瓶减速时间
  slowAmount?: number; // 减速量
  // ⭐ 博丽结界力场
  isBarrierField?: boolean; // 结界力场特效
  damageInterval?: number; // 伤害判定间隔（帧）
  slowEffect?: number; // 减速效果（0-1，速度倍率）
  damageTimer?: number; // 内部计时器，用于伤害判定
  // ⭐⭐ 羁绊物理修正
  wallBounces?: number; // 墙壁反弹次数（灵梦羁绊+1）
  hasHomingAfterBounce?: boolean; // 反弹后是否诱导（灵梦羁绊）
  canResurrect?: boolean; // 销毁时是否可复活（妹红羁绊）
  hasResurrected?: boolean; // 是否已经复活过
  delayTimer?: number; // 延迟发射计时器（咲夜羁绊）
  phaseChance?: number; // 穿墙概率（恋恋羁绊）
}

export interface UpgradeOption {
  id: string;
  type: 'weapon' | 'passive' | 'heal' | 'weapon_upgrade' | 'weapon_stat';
  name: string;
  description: string;
  icon: string;
  level: number;
  isNew: boolean;
  rarity: 'common' | 'rare' | 'legendary';
  weaponId?: string; // For weapon_upgrade/weapon_stat type, which weapon this upgrade belongs to
  statType?: 'damage' | 'cooldown' | 'area' | 'count' | 'speed'; // For weapon_stat type
}