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

public class MapDot : MonoBehaviour
{

    public GameObject DotPrefab;
    public GameObject SuperDotPrefab;

    public int SuperDotNum;//超级豆子的数量

    public LayerMask ObstadeLayer;

    public GameObject startPosGameObject;
    public GameObject endPosGameObject;
    public Vector2 startPos;
    public Vector2 endPos;



    private void Awake()
    {
        startPos = startPosGameObject.transform.position;
        endPos = endPosGameObject.transform.position;
        GeneratePellets();
    }

    void GeneratePellets()
    {
        /*int minX = Mathf.FloorToInt(Mathf.Min(startPos.x, endPos.x));
        int maxX = Mathf.CeilToInt(Mathf.Max(startPos.x, endPos.x));
        int minY = Mathf.FloorToInt(Mathf.Min(startPos.y, endPos.y));
        int maxY = Mathf.CeilToInt(Mathf.Max(startPos.y, endPos.y));*/
        float minX = Mathf.Min(startPos.x, endPos.x);
        float maxX = Mathf.Max(startPos.x, endPos.x);
        float minY = Mathf.Min(startPos.y, endPos.y);
        float maxY = Mathf.Max(startPos.y, endPos.y);

        List<Vector2> validPositions = new List<Vector2>();//存储可生成的位置

        for (float x = minX; x <= maxX; x++)
        {
            // int ram = Random.Range(0, 101);//随机数
            for (float y = minY; y <= maxY; y++)
            {
                Vector2 checkPos = new Vector2(x, y);

                // 检测Wall层碰撞体
                Collider2D hit = Physics2D.OverlapBox(checkPos, Vector2.one * 0.1f, 0, ObstadeLayer);
                if (!hit)
                {
                    validPositions.Add(checkPos);
                }
            }
        }

        // 第二阶段：随机选择超级豆位置
        List<Vector2> superDotPositions = new List<Vector2>();
        int superDotCount = Mathf.Min(SuperDotNum, validPositions.Count);//不会超出范围

        // 使用Fisher-Yates洗牌算法进行随机选择
        for (int i = 0; i < superDotCount; i++)
        {
            int randomIndex = Random.Range(i, validPositions.Count);//随机
            Vector2 temp = validPositions[i];
            validPositions[i] = validPositions[randomIndex];
            validPositions[randomIndex] = temp;

            superDotPositions.Add(validPositions[i]);
        }

        // 第三阶段：实例化所有豆子
        foreach (Vector2 pos in validPositions)
        {
            bool isSuperDot = superDotPositions.Contains(pos);//循环当前值是不是超级豆
            GameObject prefab = isSuperDot ? SuperDotPrefab : DotPrefab;//三目
            Instantiate(prefab, pos, Quaternion.identity, transform);
            GameManager.instance.AddDotNum(1);
        }
    }

}