我如何获得列表中的 GameObject 索引？

Question

开始时，对象将 link 添加到列表中。然后当我点击这个对象时，我需要获取这个对象的索引引用。怎么做？我需要的小例子：

public static List<GameObject> myObjects = new List<GameObject> ();
public GameObject ObjectA; //this is prefab
void Start(){
    for (int i = 0; i < 10; i++) {
        GameObject ObjectACopy = Instantiate (ObjectA);
        myObjects.Add (ObjectACopy);
    }
}

ObjectA 脚本：

void OnMouseDown(){
    Debug.Log(//Here i need to return index of this clicked object from the list);
}

Answer 1

遍历 Objects 列表。检查它是否与单击的游戏对象匹配。被点击的GameObject可以在OnMouseDown函数中用gameObject属性获取。如果它们匹配，return 来自该循环的当前索引。如果它们不匹配，return -1 作为错误代码。

void OnMouseDown()
{
    int index = GameObjectToIndex(gameObject);
    Debug.Log(index);
}

int GameObjectToIndex(GameObject targetObj)
{
    //Loop through GameObjects
    for (int i = 0; i < Objects.Count; i++)
    {
        //Check if GameObject is in the List
        if (Objects[i] == targetObj)
        {
            //It is. Return the current index
            return i;
        }
    }
    //It is not in the List. Return -1
    return -1;
}

这应该可行，但最好停止使用 OnMouseDown 函数，改用 OnPointerClick 函数。

public class Test : MonoBehaviour, IPointerClickHandler
{
    public static List<GameObject> Objects = new List<GameObject>();

    public void OnPointerClick(PointerEventData eventData)
    {
        GameObject clickedObj = eventData.pointerCurrentRaycast.gameObject;

        int index = GameObjectToIndex(clickedObj);
        Debug.Log(index);
    }

    int GameObjectToIndex(GameObject targetObj)
    {
        //Loop through GameObjects
        for (int i = 0; i < Objects.Count; i++)
        {
            //Check if GameObject is in the List
            if (Objects[i] == targetObj)
            {
                //It is. Return the current index
                return i;
            }
        }
        //It is not in the List. Return -1
        return -1;
    }
}

有关 OnPointerClick 的更多信息，请参阅 post。

编辑:

Objects.IndexOf 也可以用于此。这个答案是为了让你明白如何自己做，以便以后解决类似的问题。

我如何获得列表中的 GameObject 索引？

How i can get GameObject index in the list?

c#

list

unity3d

gameobject