go animal race

README.md

Race

small experiment on our go meetup.

race.go

package main

import (
	"fmt"
	"math/rand"
	"os"
	"os/exec"
	"sort"
	"strings"
	"time"
)

func clearScreen() {
	// https://stackoverflow.com/questions/22891644/how-can-i-clear-the-terminal-screen-in-go

	// fmt.Println("\033[2J")
	cmd := exec.Command("clear") //Linux example, its tested
	cmd.Stdout = os.Stdout
	cmd.Run()
}

const maxSteps = 50

func sortKeys(input map[string]int) []string {
	var keys []string

	for k := range input {
		keys = append(keys, k)
	}

	sort.Strings(keys)

	return keys
}

func main() {
	clearScreen()

	players := map[string]int{
		"cavalo":   0,
		"porco":    0,
		"leopardo": 0,
	}

	sortedKeys := sortKeys(players)

	exit := false
	champ := ""
	for {

		for _, k := range sortedKeys {
			players[k] += rand.Intn(5)
		}

		for _, k := range sortedKeys {

			if !exit && players[k] >= maxSteps {
				exit = true
				champ = k
			}
			corre(k, players[k])
		}

		if exit {
			break
		}
		time.Sleep(500 * time.Millisecond)

		clearScreen()
	}

	fmt.Printf("\n %s win with %d steps.\n", champ, players[champ])
}

func corre(nome string, passos int) {
	fmt.Printf("%15s: %s\n", nome, strings.Repeat("#", passos))
}

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