日麻小工具
已实现功能：
- 获取番符对应和牌点数
- 手牌向听数、进张分析
- 摸牌何切分析
- 鸣牌分析
- 和了分析（役种、番数、符数）
基于该库开发的App：https://github.com/ssttkkl/mahjong-utils-app
本项目使用Kotlin/Multiplatform编写，支持多平台调用
对于Kotlin、Java：请直接往下阅读
对于Python：我们提供了绑定方便Python侧调用，具体请看 https://github.com/ssttkkl/mahjong-utils/tree/py
对于JavaScript/TypeScript：我们提供了绑定方便JS/TS侧调用，具体请看 https://github.com/ssttkkl/mahjong-utils/tree/js
Maven：
<dependency>
<groupId>io.github.ssttkkl</groupId>
<artifactId>mahjong-utils</artifactId>
<version>${mahjongUtilsVersion}</version>
</dependency>Gradle：
implementation "io.github.ssttkkl:mahjong-utils:{mahjongUtilsVersion}"- 向听分析：shanten
- 标准形向听分析：regularShanten
- 七对子向听分析：chitoiShanten
- 国士无双向听分析：kokushiShanten
- 副露判断向听分析：furoChanceShanten
未摸牌：
val result = shanten(Tile.parseTiles("34568m235p68s"))
val shantenInfo = result.shantenInfo as ShantenWithoutGot
print(shantenInfo.shantenNum) // 2
print(shantenInfo.advance) // [7m, 1p, 4p, 5p, 6s, 8s, 7s, 2p, 3p, 6m, 8m, 3m]已摸牌：
val result = shanten(Tile.parseTiles("112233p44556s127z"))
val shantenInfo = result.shantenInfo as ShantenWithGot
print(shantenInfo.shantenNum) // 1
print(shantenInfo.discardToAdvance)
/*
{1z=ShantenWithoutGot(shantenNum=1, advance=[3s, 6s, 2z, 7z], advanceNum=13, goodShapeAdvance=[2z, 7z], goodShapeAdvanceNum=6),
2z=ShantenWithoutGot(shantenNum=1, advance=[3s, 6s, 1z, 7z], advanceNum=13, goodShapeAdvance=[1z, 7z], goodShapeAdvanceNum=6),
6s=ShantenWithoutGot(shantenNum=1, advance=[1z, 2z, 7z], advanceNum=9, goodShapeAdvance=[], goodShapeAdvanceNum=0),
7z=ShantenWithoutGot(shantenNum=1, advance=[3s, 6s, 1z, 2z], advanceNum=13, goodShapeAdvance=[1z, 2z], goodShapeAdvanceNum=6),
5s=ShantenWithoutGot(shantenNum=2, advance=[2s, 3s, 4s, 5s, 6s, 1z, 2z, 7z, 7s], advanceNum=28, goodShapeAdvance=null, goodShapeAdvanceNum=null),
3p=ShantenWithoutGot(shantenNum=2, advance=[3p, 3s, 6s, 1z, 2z, 7z], advanceNum=18, goodShapeAdvance=null, goodShapeAdvanceNum=null),
4s=ShantenWithoutGot(shantenNum=2, advance=[3s, 4s, 5s, 6s, 7s, 1z, 2z, 7z], advanceNum=24, goodShapeAdvance=null, goodShapeAdvanceNum=null),
2p=ShantenWithoutGot(shantenNum=2, advance=[2p, 3s, 6s, 1z, 2z, 7z], advanceNum=18, goodShapeAdvance=null, goodShapeAdvanceNum=null),
1p=ShantenWithoutGot(shantenNum=2, advance=[1p, 4p, 3s, 6s, 1z, 2z, 7z], advanceNum=22, goodShapeAdvance=null, goodShapeAdvanceNum=null)}
*/- 和牌分析：hora
val result = hora(
tiles = Tile.parseTiles("12233466m111z"),
furo = listOf(Furo("789p")),
agari = Tile.get("1z"),
tsumo = true,
dora = 4,
selfWind = Wind.East,
roundWind = Wind.East
)
print(result.yaku) // {SelfWind, RoundWind}
print(result.han) // 6
print(result.hu) // 30
print(result.parentPoint) // ParentPoint(ron=18000, tsumo=6000)
print(result.childPoint) // ChildPoint(ron=12000, tsumoParent=6000, tsumoChild=3000)- 获取子家（闲家）和牌点数：getChildPointByHanHu
- 获取亲家（庄家）和牌点数：getParentPointByHanHu
// 获取亲家X番Y符的点数
val parentPoint = getParentPointByHanHu(3, 40)
print(parentPoint.ron) // 7700
print(parentPoint.tsumo) // 2600
print(parentPoint.tsumoTotal) // 7800
// 获取子家X番Y符的点数
val childPoint = getChildPointByHanHu(3, 40)
print(childPoint.ron) // 5200
print(childPoint.tsumoParent) // 2600
print(childPoint.tsumoChild) // 1300
print(childPoint.tsumoTotal) // 5200为方便其他语言以动态库的形式调用，mahjong-utils-entry项目将mahjong-utils的功能封装，并暴露一个统一入口 call 方法供外部调用。
其参数与返回值均为JSON编码的字符串。
确保本地安装了JDK11或更高版本，克隆本项目后，执行：
./gradlew :mahjong-utils-entry:linkReleaseSharedNative会在mahjong-utils-entry/build/bin/native/releaseShared目录下得到动态库产物与头文件。
以C语言为例：
#include <stdio.h>
#include "libmahjongutils_api.h"
int main(int argc, char** argv) {
libmahjongutils_ExportedSymbols* lib = libmahjongutils_symbols();
const char* params = "{\"tiles\":[\"1s\",\"1s\",\"1s\",\"2s\",\"3s\",\"4s\",\"5s\",\"6s\",\"7s\",\"8s\"]}";
const char* result = lib->kotlin.root.mahjongutils.entry.call("shanten", params);
printf("%s", result);
return 0;
}输出：
{"data":{"hand":{"tiles":["1s","1s","1s","2s","3s","4s","5s","6s","7s","8s"],"furo":[],"patterns":[{"type":"RegularHandPattern","k":3,"jyantou":null,"menzenMentsu":["111s","234s","567s"],"furo":[],"tatsu":[],"remaining":["8s"]},{"type":"RegularHandPattern","k":3,"jyantou":null,"menzenMentsu":["111s","234s","678s"],"furo":[],"tatsu":[],"remaining":["5s"]},{"type":"RegularHandPattern","k":3,"jyantou":null,"menzenMentsu":["111s","345s","678s"],"furo":[],"tatsu":[],"remaining":["2s"]},{"type":"RegularHandPattern","k":3,"jyantou":"1s","menzenMentsu":["123s","456s"],"furo":[],"tatsu":["78s"],"remaining":[]},{"type":"RegularHandPattern","k":3,"jyantou":"1s","menzenMentsu":["123s","678s"],"furo":[],"tatsu":["45s"],"remaining":[]},{"type":"RegularHandPattern","k":3,"jyantou":"1s","menzenMentsu":["345s","678s"],"furo":[],"tatsu":["12s"],"remaining":[]}]},"shantenInfo":{"type":"ShantenWithoutGot","shantenNum":0,"advance":["8s","5s","2s","6s","9s","3s"],"advanceNum":19,"goodShapeAdvance":null,"goodShapeAdvanceNum":null,"improvement":{},"improvementNum":0,"goodShapeImprovement":{},"goodShapeImprovementNum":0},"regular":{"hand":{"tiles":["1s","1s","1s","2s","3s","4s","5s","6s","7s","8s"],"furo":[],"patterns":[{"k":3,"jyantou":null,"menzenMentsu":["111s","234s","567s"],"furo":[],"tatsu":[],"remaining":["8s"]},{"k":3,"jyantou":null,"menzenMentsu":["111s","234s","678s"],"furo":[],"tatsu":[],"remaining":["5s"]},{"k":3,"jyantou":null,"menzenMentsu":["111s","345s","678s"],"furo":[],"tatsu":[],"remaining":["2s"]},{"k":3,"jyantou":"1s","menzenMentsu":["123s","456s"],"furo":[],"tatsu":["78s"],"remaining":[]},{"k":3,"jyantou":"1s","menzenMentsu":["123s","678s"],"furo":[],"tatsu":["45s"],"remaining":[]},{"k":3,"jyantou":"1s","menzenMentsu":["345s","678s"],"furo":[],"tatsu":["12s"],"remaining":[]}]},"shantenInfo":{"type":"ShantenWithoutGot","shantenNum":0,"advance":["8s","5s","2s","6s","9s","3s"],"advanceNum":19,"goodShapeAdvance":null,"goodShapeAdvanceNum":null,"improvement":{},"improvementNum":0,"goodShapeImprovement":{},"goodShapeImprovementNum":0}},"chitoi":null,"kokushi":null},"code":200,"msg":""}
返回值有三个字段：code、msg与data。类似一般的WebAPI，其code指明执行是否成功，msg当执行失败时指明错误原因，data则为执行结果。
关于Kotlin作为动态库调用的更多信息可参考官方文档： https://kotlinlang.org/docs/native-dynamic-libraries.html#use-generated-headers-from-c
