unity3d 根据tag查找物体编辑器工具

一直有这样的需求,现在写下来.备注

/// <summary>
/// 查找场景中具有某些标签的可见物体,返回物体列表 
/// </summary>

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

public class TagFinder : EditorWindow
{

    public int tagCount = 0;
    private int maxTagCount = 10;
    private int minTagCount = 1;
    public List<GameObject> list = new List<GameObject> ();
    private bool ifShowList = true;
    private Vector2 scrollVec;
    private string[] tags;
    private bool ifShowWarning = false;

    [MenuItem ("Tag/Tag Finder %t")]
    static void Init ()
    {
        // Get existing open window or if none, make a new one:
        TagFinder window = (TagFinder)EditorWindow.GetWindow (typeof(TagFinder));
    }



    void OnEnable ()
    {

        tags = new string[maxTagCount];
        ifShowList = false;
    }

    void OnGUI ()
    {
        GUILayout.Space (4);

        GUILayout.BeginHorizontal ();
        GUILayout.Label ("要查找物体的Tag:", EditorStyles.boldLabel);
        tagCount = EditorGUILayout.IntSlider (tagCount, minTagCount, maxTagCount);
        GUILayout.EndHorizontal ();

        GUILayout.Space (4);

        EditorGUI.indentLevel = 1;
    
        for (int i = 0; i<tagCount; i++) {
            tags [i] = EditorGUILayout.TagField ("Tag" + i.ToString (), tags [i]);
//            Debug.Log ("tags" + i.ToString () + "is " + tags [i]);
        }

        GUILayout.Space (4);

        if (GUILayout.Button ("获取物体列表")) {
            if (list.Count > 0) {
                list.Clear ();
            }
            for (int i = 0; i<tagCount; i++) {
                if (tags [i] == null || tags [i].Equals (string.Empty)) {
                    continue;
                }
                GameObject[] os = GameObject.FindGameObjectsWithTag (tags [i]);
                
                
                if (os == null) {
                    continue;
                } else {
                    for (int j= 0; j<os.Length; j++) {
                        if(!list.Contains(os[j]))
                            list.Add (os [j]);
                    }
                }
            }

//            ifShowList = !ifShowList;
            ifShowList = true;
        }




        if (ifShowList) {

            GUILayout.Space(4);
            GUILayout.BeginHorizontal();

            GUILayout.Label ("你要找的所有物体如下:", EditorStyles.boldLabel);
            GUILayout.Label ("总数:" + list.Count.ToString(), EditorStyles.boldLabel);
            if (GUILayout.Button ("清除物体列表")) {
                if (list != null)
                {
                    list.Clear ();
                }
                ifShowList = false;
            }
            GUILayout.EndHorizontal();
            EditorGUI.indentLevel = 1;
            float height = list.Count == 0 ? 10f : 300f ;
            scrollVec = EditorGUILayout.BeginScrollView (scrollVec, GUILayout.Height (height));

            GUILayout.Space (4);
            
            for (int i = 0; i<list.Count; i++) {
                EditorGUILayout.ObjectField (list [i], typeof(GameObject), false);
            }
            EditorGUILayout.EndScrollView ();

            if(list.Count == 0)
            {
                ifShowWarning = true;
            }
            else
            {
                ifShowWarning = false;
            }
            if(ifShowWarning)
            {
                EditorGUILayout.HelpBox("Oops,没有找到你想要东东哦 !",MessageType.Warning);
            }
        }
    }
    void OnInspectorUpdate()
    {
        Repaint();
    }



}