类的实例变量不能调用？

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);               
    }            
}

所以我初始化了一个名为 P1 的对象，其名称为“zach”，hp 为 100，伤害为 20，我无法在其他地方访问这 3 个变量。这些不是播放器类中的私有变量，我说的是类中通过执行初始化的变量：

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

我想如果 P1.health 是公开的，我可以在任何我想调用的地方调用它？感谢您提供任何帮助，这是我正在开发的第一个基于文本的控制台游戏，因此也感谢其他输入。

Answer 1

纵观一切，以下是我认为您所追求的定义：

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输出的伤害，那么这应该作为一个战斗模型。您可以分别更改 Player.DoDamage(Enemy e) 和 Enemy.DoDamage(Player p) 的 Do 和 Take Damage。

Answer 2

如果您想访问像p1.Health 这样的属性/字段，则必须将其更改为公开。

其次，您的分配顺序错误。

第三，您可以访问p1.Health 而不是p1.health，因为Player 没有名称为health 的属性/字段。是构造函数的参数名

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();
    }
   */
}