C＃与对象作战

Question

To familiarize myself with the basics of programming I'm attempting to make a short, simple RPG. I'm probably not going to be doing anything the most efficient way, nor am I looking to. I am, however, looking to make everything functional.

For this game, from my understanding I should use classes for players and enemies and create objects for each one to make it easier on myself. However, this made things harder when it came to combat. In my playerAttack function, I figured that since the player doing the attacking isn't always going to be the same player, I would need to use that specific player (in this case, player1 ) since the stats would be different. The same goes for enemies. You can see my logic in the line I commented out.

Now the error I'm getting there is that player1 and badguy1 don't exist in the current context, which I assume is because they aren't initialized within that function itself. But I'm pretty sure I don't WANT them to be initialized there.

So I suppose I have two questions :

1. how do I fix my current error?

2. how am I supposed to do combat when the combatants will be changing all the time? Should I not be using objects?

Thanks for any help.

using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Sim
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            Player player1 = new Player();
            player1.currentHP = 30;
            player1.maxHP = 30;
            player1.atp = 10;
            player1.dfp = 5;


            Enemy badguy1 = new Enemy();
            badguy1.currentHP = 30;
            badguy1.maxHP = 30;
            badguy1.atp = 8;
            badguy1.dfp = 4;

        }
        public void playerAttack()
        {
            int enemyDamage;
           // enemyDamage = player1.atp - badguy1.dfp; 
        }
     public class Player
    {
       public int currentHP;
       public int maxHP;
       public int atp;
       public int dfp;

    }
    public class Enemy
    {
        public int currentHP;
        public int maxHP;
        public int atp;
        public int dfp;

    }
}

Answer 1

You can make player and enemy parameters of playerAttack :

public void playerAttack(Player player, Enemy enemy)
{
    int enemyDamage = player.atp - enemy.dfp;
    ...
}

then when you call playerAttack you can pass whatever appropriate to it. For example:

Player player1 = new Player();
player1.currentHP = 30;
player1.maxHP = 30;
player1.atp = 10;
player1.dfp = 5;

Enemy badguy1 = new Enemy();
badguy1.currentHP = 30;
badguy1.maxHP = 30;
badguy1.atp = 8;
badguy1.dfp = 4;

playerAttack(player1, badguy1);

Answer 2

Initialize them globally

public partial class Form1 : Form
{

    Player player1 = new Player();
    player1.currentHP = 30;
    player1.maxHP = 30;
    player1.atp = 10;
    player1.dfp = 5;


    Enemy badguy1 = new Enemy();
    badguy1.currentHP = 30;
    badguy1.maxHP = 30;
    badguy1.atp = 8;
    badguy1.dfp = 4;

    public Form1()
    {
        InitializeComponent();


    }
    public void playerAttack()
    {
        int enemyDamage;
        enemyDamage = player1.atp - badguy1.dfp; 
    }
 public class Player
{
   public int currentHP;
   public int maxHP;
   public int atp;
   public int dfp;

}
public class Enemy
{
    public int currentHP;
    public int maxHP;
    public int atp;
    public int dfp;

}
}

This way, you can actually call them on anywhere within the class.