js练习：猜拳游戏

js练习：猜拳游戏

// 猜拳游戏
// 清屏函数
let clear = () => process.stdout.write(process.platform === 'win32' ? 'x1Bc' : 'x1B[2Jx1B[3Jx1B[H');
let readline = require("readline-sync");
let player = {
    name : "玩家", // 默认玩家名
    victory : 0   // 玩家胜利局数
};
let com = {
    name : "电脑",  
    victory : 0   // 电脑胜利局数
}
// 胜负判断函数 接收两个参数 玩家猜拳数字 电脑猜拳数字
let judge = function(i,j){
    // 返回数字 0 1 2，0代表平局  1代表玩家获胜   2代表电脑获胜
    let result = j - i;
    if(result === 0)
    {
        return 0;
    }
    else if(result > 0)
    {
        if(i === 1 && j === 3) 
        {
            return 2;
        }
        else{
            return 1;
        }
    }
    else{
        if(i === 3 && j === 1)
        {
            return 1;
        }
        else{
            return 2;
        }
    }
}
// 描述函数 根据传递过来的数字返回对应的文字
let desc = function(i){
    let str = "";
    switch(i)
    {
        case 1:str = "石头";return str;
        case 2:str = "剪刀";return str;
        case 3:str = "布";return str;
    }
}
let main = function(){
    clear();
    console.log("请输入您的玩家名：");
    let playerName = readline.question("");
    player.name = playerName;
    let useSys = true;
    while(useSys)
    {
        clear();
        console.log("欢迎来到猜拳游戏，",player.name);
        console.log("请选择游戏选项：  1.开始游戏    2.游戏说明    3.退出游戏");
        let funcSelect = readline.question("");
        switch(funcSelect)
        {
            // 开始游戏
            case "1":
                let playNow = true; // 设置游戏状态为true
                while(playNow)
                {
                    clear();
                    console.log("请选择你要出的拳：  1.石头   2.剪刀   3.布   4.返回");
                    let playerChoose = parseInt(readline.question(""));
                    switch(playerChoose)
                    {
                        case 1:
                        case 2:
                        case 3:
                            {
                                // 电脑随机出拳 返回1-3的随机数 1.石头   2.剪刀   3.布
                                let computChoose = Math.floor(Math.random()*3 + 1); 
                                let result = judge(playerChoose,computChoose);
                                // 根据返回结果来输出不同内容
                                switch(result) 
                                {
                                    // 平局
                                    case 0:
                                        console.log("你出的是：",desc(playerChoose));
                                        console.log("电脑出的是：",desc(computChoose));
                                        console.log("本轮平局，不记分");
                                        console.log(player.name + ":" + player.victory + "  vs  " + com.name + ":" + com.victory);
                                        console.log("按回车键继续");
                                        readline.question("");
                                        break;
                                    // 玩家获胜
                                    case 1:
                                        console.log("你出的是：",desc(playerChoose));
                                        console.log("电脑出的是：",desc(computChoose));
                                        console.log("玩家胜利！");
                                        player.victory++;
                                        console.log(player.name + ":" + player.victory + "  vs  " + com.name + ":" + com.victory);
                                        console.log("按回车键继续");
                                        readline.question("");
                                        break;
                                    // 电脑获胜
                                    case 2:
                                        console.log("你出的是：",desc(playerChoose));
                                        console.log("电脑出的是：",desc(computChoose));
                                        console.log("电脑胜利！");
                                        com.victory++;
                                        console.log(player.name + ":" + player.victory + "  vs  " + com.name + ":" + com.victory);
                                        console.log("按回车键继续");
                                        readline.question("");
                                        break;
                                }
                            }
                            break;
                        case 4:
                            playNow = false; // 返回上级菜单 只需要将 playNow需改为false
                            break;
                        default:
                            console.log("输入有误，请重新输入，按回车键继续");
                            readline.question("");
                    }
                   
                }
                break;
            // 游戏说明
            case "2":
                clear();
                console.log("就和平时我们玩的猜拳游戏一样");
                console.log("玩家选择是出石头，剪刀，还是布，然后和电脑出的拳进行比较");
                console.log("比较规则如下：");
                console.log("石头克剪刀  剪刀克布  布克石头");
                console.log("按回车键返回");
                readline.question("");
                break;
            // 退出游戏
            case "3":
                useSys = false;
                break;
            default:
                console.log("输入有误，请重新输入，按回车键继续");
                readline.question("");
        }
    }
    clear();
    console.log("最终比分为：");
    console.log(player.name + ":" + player.victory + "  vs  " + com.name + ":" + com.victory);
    console.log("Thank you for playing，",player.name);
}
main();