如何在列表中获取游戏对象的组件

Question

我有这个脚本可以将我选择的游戏对象添加到列表中（在运行时）。

public Transform ParentOfList;
public List<GameObject> Objects3d = new List<GameObject>();
public GameObject ActualSelected;

public void add3DtoList()
{
    foreach (Transform child in ParentOfList) // iterate through all first level children
    {
        if (child.gameObject.activeSelf)
        {
            Debug.Log($"The child {child.name} is active!");
            ActualSelected = child.gameObject;
            if (Objects3d.Contains(ActualSelected))
            {
                Debug.Log("Already exist in list");
            }
            else
            {
                Objects3d.Add(ActualSelected); //add the actual gameobject selected in runtime to list
            }
        }
    }
}

PD：父游戏对象同时只有一个子对象处于活动状态。

添加到列表中的每个游戏对象都有一个文本组件，我想从列表中获取这些单独的文本组件并将其放入一个新的变量文本中。 喜欢：

Text MergeText;
MergeText.text = ListIndex1.text + ListIndex2.text + etc;

我不知道如何实现。一些指导？谢谢。

已解决， 脚本一列表：

public Transform ParentOfList;
    public List<GameObject> Objects3d = new List<GameObject>();
    public GameObject ActualSelected;
    public Text MergeText;

    public void add3DtoList()
    {
        foreach (Transform child in ParentOfList) // iterate through all first level children
        {
            if (child.gameObject.activeSelf)
            {
                Debug.Log($"The child {child.name} is active!");
                ActualSelected = child.gameObject;
                if (Objects3d.Contains(ActualSelected))
                {
                    Debug.Log("Already exist in list");
                }
                else
                {
                    Objects3d.Add(ActualSelected); //add the actual gameobject selected in runtime to list
                }
            }
        }
        MergeText.text = string.Join("\n", Objects3d.Select(obj => obj.GetComponent<Text>().text));
    }

已解决， 两个 List 的脚本：

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using UnityEngine;
using UnityEngine.UI;

public class LIST3DOBJECTS : MonoBehaviour
{
    public Transform ParentOfListCodigo;
    public Transform ParentOfListDesc;
    public List<GameObject> Objects3dCodigo = new List<GameObject>();
    public List<GameObject> Objects3dDesc = new List<GameObject>();
    public GameObject ActualSelectedCode;
    public GameObject ActualSelectedDesc;
    public Text MergeTextCode;
    public Text MergeTextDesc;
    public Text MergeLists;

    public void add3DtoList()
    {       
        foreach (Transform child in ParentOfListCodigo) // iterate through all first level children
        {
            if (child.gameObject.activeSelf)
            {
                Debug.Log($"The child {child.name} is active!");
                ActualSelectedCode = child.gameObject;
                if (Objects3dCodigo.Contains(ActualSelectedCode))
                {
                    Debug.Log("Already exist in list");
                }
                else
                {
                    Objects3dCodigo.Add(ActualSelectedCode); //add the actual gameobject selected in runtime to list
                }
            }
        }
        MergeTextCode.text = string.Join("\n", Objects3dCodigo.Select(obj => obj.GetComponent<Text>().text)); //first list, show the code (name), of the children gameobject


        foreach (Transform child in ParentOfListDesc) // iterate through all first level children
        {
            if (child.gameObject.activeSelf)
            {
                Debug.Log($"The child {child.name} is active!");
                ActualSelectedDesc = child.gameObject;
                if (Objects3dDesc.Contains(ActualSelectedDesc))
                {
                    Debug.Log("Already exist in list");
                    
                }
                else
                {
                    Objects3dDesc.Add(ActualSelectedDesc); //add the actual gameobject selected in runtime to list
                    
                }
            }
        }
        MergeTextDesc.text = string.Join("\n", Objects3dDesc.Select(obj => obj.GetComponent<Text>().text)); //second list, show the description of the children gameobject
        CleanText();
    }

    private void CleanText()
    {
        var list1 = Objects3dCodigo.Select(child => child.GetComponent<Text>().text);
        var list2 = Objects3dDesc.Select(child => child.GetComponent<Text>().text);
        var zipped = list1.Zip(list2, (l1, l2) => $"{l1}\n{l2}");
        MergeLists.text = string.Join("\n", zipped);
    }

}

Answer 1

听起来你想做的事情就像例如

var stringBuilder = new StringBuilder();
foreach(var child in Objects3d)
{
    stringBuilder.Append(child.GetComponent<Text>().text);
}
MergeText.text = stringBuilder.ToString();

或者如果你想使用Linq 你也可以例如做类似的事情

MergeText.text = string.Join("", Objects3d.Select(child => child.GetComponent<Text>().text));

除了""，您还可以使用“分隔符” - 分隔符字符串，例如" " 或 ", " 或 "\n" 等

同样的东西，你当然也可以使用 upper 方法附加。

---

关于 cmets 的后续问题

对于两个列表，您可以采用第一种方法，但可以通过索引进行迭代，例如

for(var i =0; i< Objects3d.Length; i++)
{  
    stringBuilder.Append(Objects3d[i]).Append('\n')
        .Append(otherList[i]).Append('\n'); 
}

或者您可以使用第二种Linq 方法并使用.Zip 首先我认为将两个列表“合并”在一起，例如像这样

var list1 = Objects3d.Select(child => child.GetComponent<Text>().text);
var list2 = OtherList.Select(child => child.GetComponent<Text>().text);
var zipped = list1.Zip(list2, (l1, l2) => $"{l1}\n{l2}");
MergeText.text = string.Join("\n", zipped);

可能还有更优雅的解决方案（目前仅在我的智能手机上）

Answer 2

我不知道你的意思，你可以这样做：
var TextsList = Objects3d.Select(object => object.GetComponent<Text>()).ToList() 要获取所有对象文本，或者你可以使用 where 从列表中选择组件的值在哪里：
string text = Objects3d.Where(object => object.GetComponent<Text>() = "your_value"); 它是基本的 C#