实现一个简单的抢红包的单机控制台游戏

package main

import (
	"fmt"
	"math/rand"
	"os"
	"strconv"
	"time"
)

func main() {
	// 声明初始化cache
	cache := Cache{}

	// 设置红包
	remainCnt, remainMoney := setPacket()

	// 元---> 分
	remainMoney = remainMoney * 100

	for {
		// 输入姓名
		rName := Input()

		// 判读是否已抢
		if val, ok := cache.Get(rName); ok {
			fmt.Printf("你已抢到了%.2f元\n", float32(val)/100)
			continue
		}

		// 分配红包
		rMoney := randPacket(remainCnt, remainMoney)
		fmt.Printf("恭喜你%s，抢到了%.2f元\n", rName, float32(rMoney)/100)

		// 数据存储
		cache.Set(rName, rMoney)

		if remainCnt == 1 {
			fmt.Println("红包被抢完了")
			break
		}

		remainCnt--
		remainMoney -= rMoney
	}
}

// cache
type Cache map[string]int

// get
func (c Cache) Get(key string) (int, bool) {
	if val, ok := c[key]; ok {
		return val, ok
	}

	return 0, false
}

// set
func (c Cache) Set(key string, val int) {
	c[key] = val
}

func setPacket() (count, money int) {
	args := os.Args[1:]
	sName := ""

	if len(args) == 0 {
		fmt.Printf("请输入发红包人姓名:")
		fmt.Scanln(&sName)

		fmt.Printf("请输入红包人数:")
		fmt.Scanln(&count)

		fmt.Printf("请输入红包金额（元）:")
		fmt.Scanln(&money)
	} else {
		sName = args[0]
		count, _ = strconv.Atoi(args[1])
		money, _ = strconv.Atoi(args[2])
	}
	fmt.Printf("%s发送了%d元红包, 开始抢红包。。。\n", sName, money)
	fmt.Println("================华丽的分割线========================")

	return count, money
}

func Input() string {
	var name string
	fmt.Printf("输入姓名抢红包:")
	fmt.Scanln(&name)

	return name
}

func randPacket(remainCnt, remainMoney int) int {
	if remainCnt == 1 {
		return remainMoney
	}

	rand.Seed(time.Now().UnixNano())
	min := 1
	max := remainMoney / remainCnt * 2
	money := min + rand.Intn(max-min)

	return money
}