获取场景中2个GameObject的相对路径的工具类

在工作过程中,经常需要通过A下面的子物体B
例如transA.Find("XXX");
而填入路径是很繁琐的事情, 手写相对路径很容易出现拼写错误,所以我写了这个工具, 用来计算相对路径,然后Ctrl+V到代码中就好了.可以节省一些手动计算路径的时间并且完全避免了拼写错误的问题.

using UnityEditor;
using UnityEngine;
public class GetRelativePath : EditorWindow {
static GameObject parent = null;
static GameObject child = null;
[UnityEditor.MenuItem("Tool/Get Relative Path")]
static void Init()
{
var window = EditorWindow.GetWindow<GetRelativePath>();
window.Show();
}

void OnGUI()
{
    parent = EditorGUI.ObjectField(new Rect(3, 3, position.width - 6, 20), "Parent", parent, typeof(GameObject)) as GameObject;
    EditorGUILayout.Space();
    child = EditorGUI.ObjectField(new Rect(3, 23, position.width - 6, 20), "Child", child, typeof(GameObject)) as GameObject;

    if (parent&&child)
    {
        if (GUI.Button(new Rect(3, 45, position.width - 6, 20), "Get Path"))
        {
            var childPath = GetGameObjectPath(child);
            var parentPath = GetGameObjectPath(parent);
            if (childPath.StartsWith(parentPath))
            {
                var relativePath = childPath.Remove(0, parentPath.Length + 1);
                EditorGUIUtility.systemCopyBuffer = relativePath;
                EditorUtility.DisplayDialog("成功", "已经复制到系统剪切板", "OK");
            }
            else
            {
                EditorUtility.DisplayDialog("失败", "两个Gameobject没有父子关系", "OK");
            }
        }

    }
    else
        EditorGUI.LabelField(new Rect(3, 85, position.width - 6, 20), "Missing:", "Select an object first");
}

void OnInspectorUpdate()
{
    Repaint();
}

public static string GetGameObjectPath(GameObject obj)
{
    string path = obj.name;
    while (obj.transform.parent != null)
    {
        obj = obj.transform.parent.gameObject;
        path = obj.name + "/" + path;
    }
    return path;
}

}