using UnityEngine;
using DG.Tweening;
using UnityEngine.UIElements;
using System.Collections.Generic; // 引入DoTween命名空间


[System.Serializable]
public class waypoints
{
    public List<Transform> _waypoints = new List<Transform>();
}

public class SimplePathfindingDoTween : Fun
{
    public waypoints waypoints = new waypoints();// 预设的路径点
    public float moveSpeed = 1f;  // 控制移动速度的参数（更高值表示更快的速度）

    private int currentWaypointIndex = 0;  // 当前路径点的索引
    Vector3 Vector3 = new Vector3();
    public void MoveToNextWaypoint(GameObject gameObject)
    {       
        if (currentWaypointIndex < waypoints._waypoints.Count)
        {
            // 获取下一个路径点
            Transform targetWaypoint = waypoints._waypoints[waypoints._waypoints.Count-1];

            // 计算路径点之间的距离
            float distance = Vector3.Distance(gameObject.transform.position, targetWaypoint.position);

            // 根据设置的速度计算时间
            float timeToReach = distance*10 / moveSpeed;  // 根据速度控制匀速移动的时间
         
            // 使用DoTween的DOPath来平滑地移动到目标位置
            Vector3[] path = new Vector3[waypoints._waypoints.Count - currentWaypointIndex];
            for (int i = 0; i < path.Length; i++)
            {
                path[i] = waypoints._waypoints[currentWaypointIndex + i].position;
            }

            gameObject.transform.DOPath(path, timeToReach, PathType.Linear)
                .SetEase(Ease.Linear).OnUpdate(() => RotateTowardsTarget());  // 每次更新时调整旋转

        }
        else
        {
            Debug.Log("到达终点！");
        }

    }

    void RotateTowardsTarget()
    {
        Vector3 _vector3 = Vector3 - gameObject.transform.position;
        Vector3 = gameObject.transform.position;       
        if (_vector3.x>0)
        {
            // 物体在目标的右边或平行，设置物体的y旋转为180°，面向左侧
            gameObject.transform.rotation = Quaternion.Euler(0, 0, 0);
        }
        else
        {
            // 物体在目标的左边，设置物体的y旋转为0°，面向右侧
            gameObject.transform.rotation = Quaternion.Euler(0, 180, 0);
        }
    }
}