类的实例变量不能被调用？

Question

public class Player
{
    private string Name;
    private int Health = 100;
    private int Damage;

    public Player(string name, int health, int damage)
    {
        name = Name;
        health = Health;
        damage = Damage;
    }        
}

public class Enemy
{
    public void enemyTakeDamage()
    {
        int takenDamage;            
    }

    private string Name;
    private int Health = 100;
    private int Damage;
    public string enemyMessages;

    public Enemy(string name, int health, int damage)
    {
        name = Name;
        health = Health;
        damage = Damage;
    }        
}

class Program
{
    static void Main(string[] args)
    {
        bool dead;
        Player P1 = new Player("Zach", 100, 20);               
    }            
}

因此，我初始化了一个名为P1的对象，名称为“zach”，hp为100，损坏为20，我无法在其他地方访问这3个变量。这些不是玩家类中的私有变量，我说的是类中通过执行以下操作初始化的那些变量：

public Player(string name, int health, int damage)

我想我可以在任何地方调用P1.health，如果它是公共的？感谢任何帮助，这是我的第一个基于文本的游戏机游戏，所以其他输入也很感谢。

Answer 1

如果您想访问像p1这样的属性/字段。健康，你必须公开改变它。

其次，你的分配顺序是错误的。

第三，您可以访问 p1。健康不是 p1.健康，因为玩家没有属性/字段，这是名称健康。它是构造函数的参数名称

public class Player
{
    public string Name;
    public int Health = 100;
    public int Damage;

    /* II. way
          public string Name {get;set;}
          public int Health {get;set;} = 100;
          public int Damage {get;set;}
      */

    /* III. way
        private string _name;
        private int _health = 100;
        private int _damage;

        public string Name {get { return _name ; } }
    */

    public Player(string name, int health, int damage)
    {
        Name = name;
        Health = health;
        Damage = damage;
    }
}

public class Enemy
{
    public void enemyTakeDamage()
    {
        int takenDamage;
    }

    private string Name;
    private int Health = 100;
    private int Damage;
    public string enemyMessages;

    public Enemy(string name, int health, int damage)
    {
        Name = name;
        Health = health;
        Damage = damage;
    }
}


public class Program
{
    static void Main(string[] args)
    {
        bool dead;
        Player P1 = new Player("Zach", 100, 20);
        Console.WriteLine("Name : " + P1.Name + Environment.NewLine +
                          "Health : " + P1.Health +Environment.NewLine +
                          "Damage : "+ P1.Damage);

        Console.ReadKey();
    }

    /* static player
    public static Player P1;
    static void Main(string[] args)
    {
       bool dead;
       P1 = new Player("Zach", 100, 20);
       Console.WriteLine("Name : " + P1.Name + Environment.NewLine +
                         "Health : " + P1.Health + Environment.NewLine +
                         "Damage : " + P1.Damage);

       Console.ReadKey();
    }
   */
}

Answer 2

纵观一切，以下是我认为你想要的定义:

public class Player
{
    public string Name { get; set; }
    public int Health { get; set; } = 100;
    public int Damage { get; set; }
    public bool IsAlive { get; set; }

    public Player(string name, int health, int damage)
    {
        Name = name;
        Health = health;
        Damage = damage;
        IsAlive = true;
    }

    public void TakeDamageFromEnemy(Enemy enemy)
    {
        if(IsAlive)
        {
            Health -= enemy.Damage;
            if (Health < 0)
            {
                IsAlive = false;
                MessageBox.Show("Player is dead!");
            }
        }
    }

    public void DoDamageToEnemy(Enemy enemy)
    {
        if(enemy.IsAlive)
        {
            enemy.Health -= Damage;
            if (Health < 0)
            {
                IsAlive = false;
            }
        }
    }
}

public class Enemy
{

    private string Name { get; set; }
    private int Health { get; set; }= 100;
    private int Damage { get;  set;}
    public string enemyMessages { get; set; }
    public bool IsAlive { get; set; } 

    public Enemy(string name, int health, int damage)
    {
        Name = name;
        Health = health;
        Damage = damage;
        IsAlive = true;
    }
    //This is likely replaced by the Player's DoDamageToEnemy method.
    public void enemyTakeDamage()
    {
        int takenDamage;
    }   
}


public class Program
{
    static void Main(string[] args)
    {
        Player playerOne = new Player("Zach", 100, 20);
        Enemy enemyOne = new Enemy("Trogg",15,5);
        Enemy enemyTwo = new Enemy("Dragon",1000,50);
        playerOne.TakeDamageFromEnemy(enemyTwo);
        playerOne.TakeDamageFromEnemy(enemyOne);
        playerOne.DoDamageToEnemy(enemyOne);
        playerOne.TakeDamageFromEnemy(enemyTwo);
        Console.ReadLine();
    }
}

假设伤害是一个角色造成的伤害，那么这应该是一个战斗模型。您可以更改Do并对玩家造成伤害。DoDamage（敌人e）和敌人。分别是DoDamage（玩家p）。