1 首先使用指令碼建立空物體，在選單中顯示出來

using UnityEngine;
using System.Collections;

public class PathNode : MonoBehaviour {
    public PathNode m_parent;
    public PathNode m_next;


    public void setNext(PathNode node){
        if(m_next!=null) m_next.m_parent=null;
        m_next=node;
        node.m_parent=this;
    }
    // 顯示圖示
    void OnDrawGizmos(){
        Gizmos.DrawIcon(this.transform.position,"Node.tif");
    }
}
 

2 然後 設定每個物體的層級關係

using UnityEngine;
using System.Collections;
using UnityEditor;
public class PathTool : ScriptableObject {

	//父路點
    static PathNode m_parent = null;
    static int num = 0;
    [MenuItem("PathTools/Create PathNode")]
    static void CreatePathNode() {
        GameObject go = new GameObject();
        go.AddComponent<PathNode>();
        go.name = "pathnode"+num++;
        go.tag = "pathnode";
        Selection.activeTransform = go.transform;
    }
    [MenuItem("PathTools/set Parent %q")]
    static void SetParent() {
        if (!Selection.activeObject || Selection.GetTransforms(SelectionMode.Unfiltered).Length > 1) return;//編輯狀態下沒有選中物體

        if (Selection.activeGameObject.tag.CompareTo("pathnode") == 0) {

            m_parent = Selection.activeGameObject.GetComponent<PathNode>();

        
        }
    }
    [MenuItem("PathTools/Set Child %w")]
    static void setChild() {

        if (!Selection.activeGameObject || Selection.GetTransforms(SelectionMode.Unfiltered).Length > 1) return;
        if (Selection.activeGameObject.tag.CompareTo("pathnode") == 0) {
            if (m_parent == null) {
                Debug.LogError("先設定子節點");
                return;
            }
            m_parent.setNext(Selection.activeGameObject.GetComponent<PathNode>());//父節點上面儲存了， 將當前的節點作為上一個父節點的子節點
            m_parent = null;
        }
    }
    
}