#if UNITY_EDITOR
using System;
using System.Collections.Generic;
using System.IO;

using UnityEditor;
#endif
using UnityEngine;

[ExecuteInEditMode]
public class BackBroadEditor : MonoBehaviour
{
#if UNITY_EDITOR
    public List<GameObject> prefabs; // 棋盘格子Prefab
    public int width         = 10; // 棋盘宽度
    public int height        = 5; // 棋盘高度
    public float spacing     = 1f; // 格子之间的间距

    public void GenerateBoard()
    {
        // 清除现有的子对象
        foreach (Transform child in transform)
        {
            DestroyImmediate(child.gameObject);
        }

        // 生成新的棋盘
        for (int x = 0; x < width; x++)
        {
            for (int y = 0; y < height; y++)
            {
                Vector3 position = new Vector3(x * spacing, y * spacing,0 );
                GameObject obj = GetRandomSelection(prefabs);
                GameObject broad = PrefabUtility.InstantiatePrefab(obj) as GameObject;
                broad.transform.SetParent(this.transform);
                broad.transform.localPosition = position;
            }
        }
    }

    private GameObject GetRandomSelection(List<GameObject> list)
    {
        System.Random random = new System.Random();
        int n = list.Count;
        int randomNumber = random.Next(0, n);
        return list[randomNumber];
    }
#endif
}