31ゲーム

thirty_one_play.go

package main
import "fmt"
import "math/rand"
import "time"

var goal = 31

func min_max(cards []int, turn bool, sum int) int {
    if sum == goal { if turn {return -10} else {return 10} }
    if sum >  goal { if turn {return 10} else {return -10} }
    
    if turn {
        max := -100
        for i := 0; i < 6; i++ {
            if cards[i] == 0 {continue}
            cards[i]--
            score := min_max(cards, !turn, sum + i + 1)
            cards[i]++
            if score > max {max = score}
        }
        return max
    } else {
        min := 100
        for i := 0; i < 6; i++ {
            if cards[i] == 0 {continue}
            cards[i]--
            score := min_max(cards, !turn, sum + i + 1)
            cards[i]++
            if score < min {min = score}
        }
        return min
    }
}

func input(cards []int) int {
    for {
        num := 0
        fmt.Print("カードを選んで下さい（1~6）：　")
        fmt.Print(cards)
        fmt.Scanf("%d", &num)
        if 1 <= num && num <= 6 {
            num--
            if cards[num] != 0 {
                cards[num]--
                return num
            }
        }
    }
}

func computer_thinking(cards []int, sum int) int {
    win_hands := []int{}
    for i := 0; i < 6; i++ {
        cards[i]--
        score := min_max(cards, false, sum + i + 1)
        cards[i]++
        if score > 0 {win_hands = append(win_hands, i)}
    }
    
    hand := 0
    for {
        hand = rand.Intn(6)
        if cards[hand] > 0 {break}
    }
    hand = -(hand + 1)
    l := len(win_hands)
    if l > 0 {hand = win_hands[rand.Intn(l)]}
    return hand
}

func you_win (sum int) {fmt.Printf("合計 %d で、あなたの勝ちです！\n", sum)}
func you_lose(sum int) {fmt.Printf("合計 %d で、あなたの負けです！\n", sum)}

func main() {
    rand.Seed(time.Now().UnixNano())
    
    cards := []int{4, 4, 4, 4, 4, 4}
    count := 1
    sum := 0
    
    for {
        fmt.Printf("\n**第%d手目**\n", count)
        fmt.Printf("合計： %d\n", sum)
        //fmt.Printf("ヒント： %d\n", computer_thinking(cards, sum) + 1)
        hand := input(cards)
        sum += hand + 1
        if sum == goal {
            you_win(sum)
            return
        } else if sum > goal {
            you_lose(sum)
            return
        }
        count++
        
        fmt.Printf("\n**第%d手目**\n", count)
        hand = computer_thinking(cards, sum)
        if hand >= 0 && (hand + 1 + sum != goal) {
            fmt.Println("---あなたの負けは確定しています")
        }
        if hand < 0 {hand = -(hand + 1)}
        fmt.Printf("コンピュータの手は %d です\n", hand + 1)
        sum += hand + 1
        if sum == goal {
            you_lose(sum)
            return
        } else if sum > goal {
            you_win(sum)
            return
        }
        cards[hand]--
        count++
    }
}