如何将类中的整数值返回到main? C#

问题描述 投票:1回答:1

所以我从一个类中返回一个整数的值时遇到了麻烦。

所以这是我的主要计划:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MatchGame
{
    class Program
{
    static void Main(string[] args)
    {
        //( Amount of matches, bot argument, player argument, gameover?,)

        //AI MatchGame = new AI(0, 0, 0, false, 0, false);

        int matchAmount = 0;
        int botMove = 0;
        int playerMove = 0;
        bool gameOver = false;
        int playerMoveAttempt = 0;
        bool choseRightAmount = false;


        void TurnPlayer()
        {

            PlayersTurn PlayerMoved = new PlayersTurn(); //choseRightAmount, playerMoveAttempt, playerMove, matchAmount);

            PlayersTurn.PlayerTurnMove(choseRightAmount, playerMoveAttempt, playerMove, matchAmount);




                Console.WriteLine(playerMoveAttempt);
                playerMove = playerMoveAttempt;
                matchAmount = matchAmount - playerMove;




        } 

       /*
        void PlayerTurn()
        {
            choseRightAmount = false;

            while (!choseRightAmount)
            {

                playerMoveAttempt = Convert.ToInt32(Console.ReadLine());
                if (playerMoveAttempt < 1 || playerMoveAttempt > 3)
                {
                    Console.WriteLine("Please take between 1 and 3 matches");
                }
                else
                {
                    playerMove = playerMoveAttempt;
                    matchAmount = matchAmount - playerMove;
                    choseRightAmount = true;
                }

            }
        } */


        void BotTurn()
        {
            botMove = matchAmount % 4;
            matchAmount = matchAmount - botMove;
        }


        void Status()
        {
            Console.WriteLine("Bot took " + botMove + " matches from the board.");
            Console.WriteLine("There are " + matchAmount + " matches left.");
        }


        void Game()
        {
            Console.WriteLine("Welcome to the game!");
            Console.WriteLine("To win you need to take the last match!");
            Console.WriteLine("You can only take between  1 and 3 matches per turn.");
            Console.WriteLine("Please choose the amount of matches you want.");
            matchAmount = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("You chose " + matchAmount + " It is your turn, please take between 1 and 3 matches");


            while (!gameOver)
            {

                TurnPlayer();

                if (matchAmount <= 0)
                {
                    Console.WriteLine("You Won.");
                    break;
                }

                BotTurn();
                if (matchAmount <= 0)
                {
                    Console.WriteLine("You lost! The bot won the match!");
                    gameOver = true;
                    break;
                }

                Status();

            }

            Console.ReadKey();

        }

        Game();


    }
}
}

所以我需要从类中获取playerMove尝试的值。我知道我可以在主程序中轻松地做到这一点,但我的老师希望我们使用课程。我需要在TurnPlayer()中使用它,这样我就可以计算剩余的匹配数量。这是在buttom中的while循环中使用的。

这是班级:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MatchGame
{
    public class PlayersTurn
{

    public static int PlayerTurnMove(bool choseRightAmount, int playerMoveAttempt, int playerMove, int matchAmount)
    {



        choseRightAmount = false;

        while (!choseRightAmount)
        {

            playerMoveAttempt = Convert.ToInt32(Console.ReadLine());
            if (playerMoveAttempt < 1 || playerMoveAttempt > 3)
            {
                Console.WriteLine("Please take between 1 and 3 matches");
            }
            else
            {

                choseRightAmount = true;
                return playerMoveAttempt;


            }



        }

        return playerMoveAttempt;

    }

}
}

所以,是的,你可以看到我试图返回playerMoveAttempt。我已经知道Class正在工作,它只是没有返回新的值。

希望你们有些人可以帮忙!提前致谢。

c# class arguments
1个回答
0
投票

您需要将方法调用的结果分配给变量,如下所示:

playerMoveAttempt = PlayersTurn.PlayerTurnMove(choseRightAmount, playerMoveAttempt, playerMove, matchAmount);
Console.WriteLine(playerMoveAttempt);

请记住,你在PlayerTurnMove方法中所做的一切都不会改变playerMoveAttemptplayerMovematchAmount之外的值,尽管它可以实现这种行为。您应该阅读有关变量范围的内容。

由于您的方法仅返回playerMoveAttempt的值,因此可以将方法的结果分配给变量,就像上面的代码示例一样。


我意识到这是一个功课,你正在学习基础知识,只是想指出你应该考虑学习static类/方法,何时使用它们以及什么时候不使用。虽然我的上面的代码示例应该可行,但对您的问题更优雅的解决方案是使用您的类,如下所示:

public class PlayersTurn
{

    public int PlayerMoveAttempt { get; set; }
    public int PlayerMove{ get; set; }
    public int MatchAmount{ get; set; }

    public PlayersTurn(int playerMoveAttempt, int playerMove, int matchAmount)
    {
        this.PlayerMoveAttempt = playerMoveAttempt;
        this.PlayerMove = playerMove;
        this.MatchAmount = matchAmount;
    }

    public void PlayerTurnMove()
    {
        while (this.playerMoveAttempt < 1 || this.playerMoveAttempt > 3)
        {
            Console.WriteLine("Please take between 1 and 3 matches");
            this.playerMoveAttempt = Convert.ToInt32(Console.ReadLine());
        }    
    }
}

...然后从控制台应用程序更改您的方法:

void TurnPlayer()
{
    PlayersTurn playerMoved = new PlayersTurn(playerMoveAttempt, playerMove, matchAmount);
    playerMoved.PlayerTurnMove();

    Console.WriteLine(playerMoved.PlayerMoveAttempt);
    playerMove = playerMoved.PlayerMoveAttempt;
    matchAmount = playerMoved.MatchAmount - playerMoved.PlayerMove;
} 

仍然不是最好的设计,因为在类中使用Console.ReadLine()通常不是一个好主意,因为这种方法与控制台应用程序高度耦合,并且它的工作只是因为我们在其中使用这个类。

如果您曾想在其他类型的应用程序(例如Windows窗体,Web应用程序)中重用此类及其逻辑,则无法正常工作。您的类不应该知道用于从用户获取输入的机制。

我猜你现在好了,因为你刚刚学习,也许你老师的下一步就是重构这个,但如果你开始尝试理解这些概念,那就太好了。

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