Question

我正在编写代码，我认为一切都很好，然后测试了我的代码。在代码中，我正在更改值：

ennemy.object_infos[0] = "Ennemy";
player.object_infos[0] = "Player";

和

的输出

 Console.WriteLine(player.object_infos[0])

是“敌人”，输出是

Console.WriteLine(ennemi.object_infos[0])

是“敌人”

确切的代码是：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing;


public class Program
{
    public static void Main()
    {
        GameEngine game = new GameEngine();
        GameEngine.GameObject ennemy = new GameEngine.GameObject(); 
        GameEngine.GameObject player = new GameEngine.GameObject(); 
        ennemy.object_infos = GameEngine.GameObject.object_infos_default;
        player.object_infos = GameEngine.GameObject.object_infos_default;
        ennemy.object_infos[0] = "Ennemy";
        player.object_infos[0] = "Player";
        Console.WriteLine(ennemy.object_infos[0] + "," + player.object_infos[0]);
    }
}
public class GameEngine 
{
    public List<GameObject> objects = new List<GameObject>();
    /*
    Vector2 : vector with 2 values x,y
    */
    public struct Vector2 
    {
        public float x,y;
        public Vector2(float xaxis,float yaxis)
        {
            x = xaxis;
            y = yaxis;
        }
    }
    public class GameObject 
    {
        /* 
        object_infos indexes:
        0 = name(string),
        1 = id(double),
        2 = sprite path in assets(string),
        3 = transform (array of 3 vectors2)
        4 = rectangle collider(Vector2 size w,h)
        5 = isActive(bool)
        6 = isVisible(bool)
        7 = tag
        */
        public object[] object_infos;
        /*
        transform default :
        index 0 = position,
        index 1 = rotation,
        index 2 = scale
        */
        private static Vector2[] transform_default = {new Vector2(0,0),new Vector2(0,0),new Vector2(1,1)};
        /*
        On new object creation apply this object infos
        */
        public static object[] object_infos_default = {"New Object", 0, "/Assets/default.png", transform_default, new Vector2(1,1), true, true, "object"};
    }
    /*
    engine class for all mathematics
    */
    public class Math
    {
        /*
        public static bool areColliding(Vector2 first_object_pos, Vector2 first_object_collidersize,Vector2 second_object_pos, Vector2 second_object_collidersize) 
        {

        }
        */
    }
}

真的很奇怪，我更改了一个值，而更改了两个值，请有人帮助我！

Answer 1

ennemy.object_infos = GameEngine.GameObject.object_infos_default;
player.object_infos = GameEngine.GameObject.object_infos_default;

这会将object_infos_default分配给 ennemy.object_infos和player.object_infos。由于分配的工作方式，您只分配了对该对象数组的引用。因此，两个object_infos都引用相同的对象，它也是object_infos_default所引用的相同对象。

因此，当您通过三个变量之一来更改对象时，您将同时为所有变量进行更改。

您应该改为创建副本，例如使用Array.clone：

ennemy.object_infos = (object[])GameEngine.GameObject.object_infos_default.Clone();
player.object_infos = (object[])GameEngine.GameObject.object_infos_default.Clone();

Answer 2

这并不奇怪，您的ennemy.object_infos和player.object_infos是同一对象，因此指向内存中的同一位置。因此，当您更改其中一项时，也会更改另一项。

如果您不希望发生这种情况，则需要为每个对象创建一个新对象。

我修改了1个变量，但修改了2个

2 个答案: