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

public class MapBuildPlacer : MonoBehaviour
{
    [Tooltip("地图SO数据")] public HomeMapSO SO_HomeMap;
    [Tooltip("坐标起始点")] public GameObject startPositionObject;
    public int cellSize = 2;


    private void Update()
    {
        // 跟随鼠标移动
        Vector3 mouse_world_position = Camera.main.ScreenToWorldPoint(Input.mousePosition);
        mouse_world_position.z = 0;
        transform.position = mouse_world_position;
        // // 计算距离最近的格子坐标
        // Vector2Int nearest = get_nearest_buildable_cell(mouse_world_position);
        // if (nearest != Vector2Int.zero)
        // {
        //     // 吸附到格子位置
        //     Vector3 cell_world_pos = startPositionObject.transform.position +
        //                              new Vector3(nearest.y, nearest.x, 0) * cellSize;
        //     transform.position = cell_world_pos;
        // }
        // else
        // {
        //     // 不在可建造范围内，跟随鼠标自由移动
        //     transform.position = mouse_world_position;
        // }
    }

    // private Vector2Int get_nearest_buildable_cell(Vector3 mouse_pos)
    // {
    //     var buildable_cells = SO_HomeMap.get_position_by_can_build();
    //
    //     if (buildable_cells == null || buildable_cells.Count == 0)
    //         return Vector2Int.zero;
    //
    //     float min_distance = float.MaxValue;
    //     Vector2Int nearest = Vector2Int.zero;
    //
    //     foreach (var cell in buildable_cells)
    //     {
    //         Vector3 cell_world_pos = startPositionObject.transform.position +
    //                                  new Vector3(cell.y, cell.x, 0) * cellSize;
    //         float dist = Vector2.Distance(mouse_pos, cell_world_pos);
    //
    //         if (dist < cellSize * 0.5f && dist < min_distance)
    //         {
    //             min_distance = dist;
    //             nearest = cell;
    //         }
    //     }

    // return nearest;
    // }
}