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

public class GuideArrowPath : MonoBehaviour
{
    public LayerMask obstacleMask;
    public float pathHeight = 0.5f;

    private LineRenderer lineRenderer;
    private bool isPathVisible = false;

    void Awake()
    {
        // 从预制体上获取已存在的LineRenderer组件
        lineRenderer = GetComponent<LineRenderer>();
        if (lineRenderer == null)
        {
            Debug.LogError("LineRenderer组件未找到！请确保预制体上已挂载LineRenderer组件");
            return;
        }

        // 预制体上已预设LineRenderer属性，这里不再动态设置
        // 如果需要在代码中覆盖预制体设置，可以取消注释以下代码
        /*
        lineRenderer.startWidth = 0.1f;
        lineRenderer.endWidth = 0.1f;
        lineRenderer.material = new Material(Shader.Find("Sprites/Default"));
        lineRenderer.startColor = Color.yellow;
        lineRenderer.endColor = Color.red;
        */

        lineRenderer.positionCount = 0;
        lineRenderer.enabled = false; // 初始禁用

        Debug.Log("GuideArrowPath 初始化完成，LineRenderer: " + (lineRenderer != null));
    }

    /// <summary>
    /// 设置路径
    /// </summary>
    public void SetPath(List<Vector3> pathPoints)
    {
        if (lineRenderer == null)
        {
            Debug.LogError("LineRenderer 未找到！");
            return;
        }
        
        if (pathPoints == null || pathPoints.Count < 2)
        {
            lineRenderer.positionCount = 0;
            return;
        }

        // 调整路径点高度
        for (int i = 0; i < pathPoints.Count; i++)
        {
            pathPoints[i] = new Vector3(pathPoints[i].x, pathHeight, pathPoints[i].z);
        }

        lineRenderer.positionCount = pathPoints.Count;
        lineRenderer.SetPositions(pathPoints.ToArray());

        Debug.Log("设置路径，点数: " + pathPoints.Count);
    }

    /// <summary>
    /// 显示路径
    /// </summary>
    public void ShowPath()
    {
        if (lineRenderer != null)
        {
            lineRenderer.enabled = true;
            isPathVisible = true;
            Debug.Log("显示路径，LineRenderer enabled: " + lineRenderer.enabled);
        }
    }

    /// <summary>
    /// 关闭路径
    /// </summary>
    public void ClosePath()
    {
        if (lineRenderer != null)
        {
            lineRenderer.enabled = false;
            isPathVisible = false;
            lineRenderer.positionCount = 0;
            Debug.Log("关闭路径");
        }
    }

    /// <summary>
    /// 检查路径是否可见
    /// </summary>
    public bool IsPathVisible()
    {
        return isPathVisible && lineRenderer != null && lineRenderer.enabled;
    }
}