syanten
v1.6.0
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Japanese riichi mahjong hand shanten calculation
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syanten
麻雀シャンテン向聴数牌理計算
Japanese riichi mahjong hand shanten calculation
Install with npm:
# npm i syanten
Use in browser:
<script src="https://cdn.jsdelivr.net/npm/syanten"></script>
Example:
const syanten = require('syanten')
let hai = [
[4, 1, 1, 1, 1, 1, 1, 1, 3], //萬子
[0, 0, 0, 0, 0, 0, 0, 0, 0], //筒子
[0, 0, 0, 0, 0, 0, 0, 0, 0], //索子
[0, 0, 0, 0, 0, 0, 0] //字牌
]
console.log(syanten.syanten(hai)) //一般形
console.log(syanten.syanten7(hai)) //七対子形
console.log(syanten.syanten13(hai)) //国士形
console.log(syanten(hai)) //全部形最小値
//手牌可能枚数: 14,13, 11,10, 8,7, 5,4, 2,1
Output:
-2 牌数不正
-1 和了形
0 聴牌形
1~ 向聴数
一般型牌理計算
const syanten = require('syanten')
let hai = [
[3, 3, 3, 0, 0, 0, 0, 0, 0],
[2, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0],
[1, 1, 1, 0, 0, 0, 0]
]
console.log(syanten.hairi(hai))
Output:
//手牌14,11,8,5,2枚の場合
{
now: 1, //現在向聴数
'1m': {},
'2m': {},
'3m': {},
'1p': {},
'1z': { '1p': 2, '2z': 3, '3z': 3 }, //打1z 待1p二枚 2z三枚 3z三枚
'2z': { '1p': 2, '1z': 3, '3z': 3 }, //打2z 待1p二枚 1z三枚 3z三枚
'3z': { '1p': 2, '1z': 3, '2z': 3 } //打3z 待1p二枚 1z三枚 2z三枚
}
"m,p,s,z" means "萬子,筒子,索子,字牌"
"1z-7z" means "東南西北白發中"
//手牌13,10,7,4,1枚の場合
let hai = [
[3, 3, 3, 0, 0, 0, 0, 0, 0],
[1, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0],
[1, 1, 1, 0, 0, 0, 0]
]
console.log(syanten.hairi(hai))
Output:
//手牌13,10,7,4,1枚の場合
{
now: 2, //現在向聴数
wait: {'1p': 3, '2p': 4, '3p': 4, '1z': 3, '2z': 3, '3z': 3 } //待1p三枚 2p四枚 3p四枚 1z三枚 2z三枚 3z三枚
}
七対&国士牌理計算
let hai = [
[2, 2, 2, 0, 0, 0, 0, 0, 0],
[1, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0],
[2, 2, 1, 1, 1, 0, 0]
]
console.log(syanten.hairi(hai, true))