using System;

​

public class Program

{

    public static void Main()

    {

        DamageGiver dg = new BasePlayerDamage();

        Console.WriteLine(dg.getDamageDescription());

        Console.WriteLine(dg.getDamage());

​

        DamageGiver dg2 = new BasePlayerDamage();

        dg2 = new Sword(dg2);

        Console.WriteLine(dg2.getDamageDescription());

        Console.WriteLine(dg2.getDamage());

        DamageGiver dg3 = new BasePlayerDamage();

        dg3 = new Sword(dg3);

        dg3 = new Ring(dg3);

        Console.WriteLine(dg3.getDamageDescription());

        Console.WriteLine(dg3.getDamage());

        DamageGiver dg4 = new BasePlayerDamage();

        dg4 = new Sword(dg4);

        dg4 = new Ring(dg4);

        dg4 = new Amulet(dg4);

        Console.WriteLine(dg4.getDamageDescription());

        Console.WriteLine(dg4.getDamage());

    }

}

​

//abstract component

public abstract class DamageGiver

{

    public int Damage {get; set;}

    public string DamageDescription { get; set; }

    public abstract int getDamage();

    public abstract string getDamageDescription();

}

​

//abstract decorator

public abstract class DamageModifierDecorator : DamageGiver

{

    public override abstract int getDamage();

    public override abstract string getDamageDescription();

​

}

​

//concrete component

public class BasePlayerDamage : DamageGiver

{

    public BasePlayerDamage()

    {

        Damage = 3;

        DamageDescription = "Fists";

    }

    public override int getDamage()

    {

        return this.Damage;

    }

    public override string getDamageDescription()

    {

        return this.DamageDescription + " for " + this.Damage + " damage";

    }

}

​

//concrete decorator

public class Sword : DamageModifierDecorator

{

​

    DamageGiver damageGiver;

​

    public Sword(DamageGiver dm)

    {

        damageGiver = dm;

        Damage = 10;

        DamageDescription = "Sword";

    }

    public override int getDamage()

    {

        return damageGiver.getDamage() + this.Damage;

    }

    public override string getDamageDescription()

    {

        return damageGiver.getDamageDescription() + ", " + this.DamageDescription + " for " + this.Damage + " damage";

    }

}

​

//concrete decorator

public class Ring : DamageModifierDecorator

{

​

    DamageGiver damageGiver;

​

    public Ring(DamageGiver dm)

    {

        damageGiver = dm;

        Damage = 4;

        DamageDescription = "Ring";

    }

    public override int getDamage()

    {

        return damageGiver.getDamage() + this.Damage;

    }

    public override string getDamageDescription()

    {

        return damageGiver.getDamageDescription() + ", " + this.DamageDescription + " for " + this.Damage + " damage";

    }

}

​

//concrete decorator

public class Amulet : DamageModifierDecorator

{

​

    DamageGiver damageGiver;

​

    public Amulet(DamageGiver dm)

    {

        damageGiver = dm;

        Damage = 7;

        DamageDescription = "Amulet";

    }

    public override int getDamage()

    {

        return damageGiver.getDamage() + this.Damage;

    }

    public override string getDamageDescription()

    {

        return damageGiver.getDamageDescription() + ", " + this.DamageDescription + " for " + this.Damage + " damage";

    }

}