Files
claude-code/packages/pokemon/src/core/gender.ts
claude-code-best e16b5667a8 fix: 改用 Gen 3+ 标准方法生成 PID/IV/闪亮/性别
- 新增 generatePID() 生成 32 位 Personality Value
- IV 改为 PID 位提取法(word1/word2 各取 3 个 5-bit),替换 LCRNG
- Shiny 检测改为 PID XOR 方法,阈值 < 16(Gen 8+ 约 1/4096)
- 性别阈值从 (rate/8)*256 改为 rate*32,消除浮点精度丢失
- 生成生物时使用 randomAbility() 替代 getDefaultAbility()
- 解决 #14 Shiny 检测、#15 IV 生成、#16 性别阈值、#20 Ability 选择

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-04-24 11:48:40 +08:00

30 lines
1015 B
TypeScript

import type { Gender, SpeciesData } from '../types'
/**
* Determine gender based on species gender ratio.
* genderRate: -1 = genderless, 0 = always male, 1-7 = female chance = genderRate/8, 8 = always female
*
* Gen 3+ style: PID low byte (0-255) compared directly against genderRate * 32.
* If value < genderRate * 32 → female, otherwise male.
*/
export function determineGender(speciesData: SpeciesData, seed: number): Gender {
if (speciesData.genderRate === -1) return 'genderless'
if (speciesData.genderRate === 0) return 'male'
if (speciesData.genderRate === 8) return 'female'
// Direct comparison: genderRate maps 0-8 to threshold 0-255 in steps of 32
const threshold = speciesData.genderRate * 32
return (seed % 256) < threshold ? 'female' : 'male'
}
/** Get gender symbol for display */
export function getGenderSymbol(gender: Gender): string {
switch (gender) {
case 'male':
return '♂'
case 'female':
return '♀'
case 'genderless':
return ''
}
}