使用包/命名空间继承 [C#]

Question

我想在一个子包中重新定义一个包的类，同时保持层次结构。

我本来想做这样的事情：

namespace RPG {

  public class Actor {}

  public class Character : Actor {}
}

public class Actor : RPG.Actor {}

//kind of a diamond problem
public class Character : Actor, RPG.Character {}

我知道这是不正确的； C#不支持多重继承，但我不知道解决这种重定义的最佳方法。

接口不能解决我的问题。我可以使用组合来做类似的事情：

public class Character : Actor {

    private RPG.Character basis;

    // and do this for each attribute and method
    public int atk { get { return basis.atk } set { basis.atk = value; } }
}

但看起来不太好。而且，我用这种方式遇到了另一个问题

namespace RPG {

    public class Actor {

        public List<Stat> stats { get; set; }
    }

    public class Stat {}
}

public class Actor {

    private RPG.Actor basis;

    //I can't do that because Stat does not inherit from RPG.Stat
    public override List<RPG.Stat> stats { get; set; }
}

public class Stat {

    private RPG.Stat basis;
}

解决我的问题的最佳方法是什么？

Answer 1

使用composition 代替继承。

很难直接举个例子，因为您没有为您的 RPG 演员/角色提供任何动作，但概念是您将行为注入到类的构造函数中。

在这种情况下，“移动”是行为：

class Fighter
{
    public int Health = 100;
    public string Name;

    private Move _move;

    public string MoveName
    {
        get
        {
            return _move.Name;
        }
    }
    public int MoveDamage
    {
        get
        {
            return _move.Damage;
        }
    }

    public Fighter(string name, Move defaultMove)
    {
        Name = name;

        _move = defaultMove;
    }

    public void Attack(Fighter defendant)
    {
        if (_move != null)
            _move.Attack(defendant);
    }

    public void SetMove(Move move)
    {
        if (move != null)
            _move = move;
    }
}

abstract class Move
{
    public int Damage { get; set; }
    public string Name { get; set; }

    protected Move(int damage,string name)
    {
        Damage = damage;
        Name = name;
    }

    public void Attack(Fighter defendant)
    {
        defendant.Health -= Damage;
    }
}

class PunchMove:Move
{
    public PunchMove() : base(5, "Punch")
    {
    }
}

class KickMove:Move
{
    public KickMove() : base(7, "Kick")
    {
    }
}

Answer 2

试试这个。

namespace RPG {

  public class Actor {

  public void d(){
  System.Console.Write("fhdf");
  }

  }

  public class Character : Actor {}
}


////////////////
public class Character :  RPG.Character {}
class Program
{
    static void Main()
    {
        Character c = new Character();
        c.d();
        Console.WriteLine("Hello, World!");
    }
}