Csharp/C#核心/Lesson13_继承-里氏替换原则练习/Program.cs

namespace Lesson13_继承_里氏替换原则练习
{
    class Monster
    {

    }
    class Boss : Monster
    {
        public void Skill()
        {
            Console.WriteLine("Boss释放了技能");
        }
    }
    class Goblin : Monster
    {
        public void Atk()
        {
            Console.WriteLine("小怪释放了攻击");
        }
    }
    class Weapon
    {
        
    }
    class SMG : Weapon
    {
        public void Shot()
        {
            Console.WriteLine("SMG shot");
        }
    }
    class Shotgun : Weapon
    {
        public void Shot()
        {
            Console.WriteLine("Shotgun shot");
        }
    }
    class Pistol : Weapon
    {
        public void Shot()
        {
            Console.WriteLine("Pistol shot");
        }
    }
    class Knife : Weapon
    {
        public void Attack()
        {
            Console.WriteLine("Knife Attack");
        }
    }
    class Player
    {
        private Weapon nowWeapon;

        public Player()
        {
            nowWeapon = new Knife();
        }
        public void PickUp(Weapon newWeapon)
        {
            nowWeapon = newWeapon;
        }
        public void Attack()
        {
            if (nowWeapon == null)
            {
                Console.WriteLine("你没有武器");
            }else if (nowWeapon is Knife)
            {
                (nowWeapon as Knife).Attack();
            }else if(nowWeapon  is Pistol)
            {
                (nowWeapon as Pistol).Shot();
            }
            else if (nowWeapon is Shotgun)
            {
                (nowWeapon as Shotgun).Shot();
            }
            else if (nowWeapon is SMG)
            {
                (nowWeapon as SMG).Shot();
            }
            else
            {
                Console.WriteLine("ERROR");
            }
        }
    }
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello, World!");
            Random r = new Random();
            
            Monster[] m = new Monster[10];
            for (int i = 0; i < m.Length; i++)
            {
                if (r.Next(1, 101) < 50)
                {
                    m[i] = new Boss();
                }
                else
                {
                    m[i] = new Goblin();
                }
            }
            for (int i = 0;i < m.Length;i++)
            {
                if (m[i] is Boss)
                {
                    (m[i] as Boss).Skill();
                }else if (m[i] is Goblin)
                {
                    (m[i] as Goblin).Atk();
                }
                else
                {
                    Console.WriteLine("Error");
                }
            }


            Console.WriteLine();
            Player p1 = new Player();
            p1.Attack();
            SMG smg1 = new SMG();
            p1.PickUp(smg1);
            p1.Attack();
        }
    }
}