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


/*
 */
public class Firelive : MonoBehaviour
{
    //火焰预制体
    public GameObject minfire;
    public GameObject bigfire;

    //火势值，用于判断火是否灭，是否变大
    private float fireNumber=0;
    //每秒的火势值
    public float FireNumber;
    //判定大火小火的值
    public float bigFireNumber;

    //生成半径
    public float spreadRadius;

    public enum WindDirection { North, South, East, West }
    public WindDirection windDirection = WindDirection.North; // 风向

    private bool isBurning = false;
    private GameObject currentFire;  // 当前生成的火焰实例

    public int SpreadFireNumber=1;

    private bool Canbig = true;
    // Start is called before the first frame update
    void Start()
    {
        StartBurning();
    }

   
    // Update is called once per frame
    void Update()
    {
        if (isBurning&&Canbig)
        {
            // 检查火势值是否超过阈值
            if (fireNumber< bigFireNumber)
            {
                fireNumber += FireNumber * Time.deltaTime;
                return;
            }        
            SwitchToMaxFire();           
        }
        
    }

    //火焰初始化
    private void StartBurning()
    {
        if (!isBurning)
        {
            isBurning = true;

            // 初始在pos位置生成小火焰预制体
            currentFire = Instantiate(minfire, transform.position, Quaternion.identity);
       
           
        }
    }


    private void SwitchToMaxFire()
    {
        // 销毁当前小火焰，替换为大火焰
        Destroy(currentFire);
        currentFire=Instantiate(bigfire, transform.position, Quaternion.identity);
        Canbig = false;
     
        StartCoroutine(DelayedSpread());

    }

    // 延迟蔓延
    private IEnumerator DelayedSpread()
    {
        // 等待设定的延迟时间
        yield return new WaitForSeconds(3);

        // 开始蔓延火焰
        SpreadFireInWindDirection();
    }

    //根据风向改变
    private void SpreadFireInWindDirection()
    {
        if (SpreadFireNumber<=0)
        {
            return;
        }
        SpreadFireNumber--;

        Vector3 spreadDirection = Vector3.zero;

        // 根据风向设置火焰蔓延的方向
        switch (windDirection)
        {
            case WindDirection.North:
                spreadDirection = Vector3.forward;
                break;
            case WindDirection.South:
                spreadDirection = Vector3.back;
                break;
            case WindDirection.East:
                spreadDirection = Vector3.right;
                break;
            case WindDirection.West:
                spreadDirection = Vector3.left;
                break;
        }

        // 获取风向的目标位置
        Vector3 targetPosition = transform.position + spreadDirection * spreadRadius;

        // 在目标位置实例化新的pos
        Instantiate(gameObject, targetPosition, Quaternion.identity);
       // GameObject go = Instantiate(gameObject, targetPosition, Quaternion.identity);
        //go.AddComponent<Firelive>();

    }

}