添加碰撞盒

只需要选择模型的父物体就好了
代码如下：

using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;

public class AddBox
{
    [MenuItem("Tools/一键添加所有碰撞盒")]
    private static void SelectionAnchor()
    {
        if (Selection.activeObject)
        {
            AddCollider((GameObject)Selection.activeObject);
        }

    }
    public static void AddCollider(GameObject obj)
    {
        if (obj.transform.childCount > 0)
        {
            for (int i = 0; i < obj.transform.childCount; i++)
            {
                Transform child = obj.transform.GetChild(i);
                if (child.GetComponent <MeshRenderer>())
                {
                    child.gameObject.AddComponent<MeshCollider>();
                }



                AddCollider(child.gameObject);
            }
        }
    }

}

删除碰撞盒

代码如下：

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

public class Destory_Box :EditorWindow
{
    [MenuItem("Tools/工具:一键清理所有Collider碰撞盒")]
    public static void ClearColiderByChild()
    {
        if (Selection.activeObject)
        {
            ClearMeshColiderByChild((GameObject)Selection.activeObject);
        }
    }
    public static void ClearMeshColiderByChild(GameObject obj)
    {
        //1.子物体有Mesh
        if (obj.transform.childCount > 0)
        {
            for (int i = 0; i < obj.transform.childCount; i++)
            {
                GameObject child = obj.transform.GetChild(i).gameObject;
                //MeshCollider meshCollider = child.GetComponent<MeshCollider>();
                //if (meshCollider != null)
                //{
                //    DestroyImmediate(meshCollider);
                //}
                BoxCollider boxCollider = child.GetComponent<BoxCollider>();
                if (boxCollider != null)
                {
                    //DestroyImmediate(boxCollider);
                    Debug.Log(boxCollider.name);
                }
                ClearMeshColiderByChild(child);
            }
        }
    }
}