using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Serialization;
using UnityEngine.UIElements;

public class GridManager : MonoBehaviour
{
    public int width = 10;
    public int height = 10;
    public float cellSize = 1f;
    [Tooltip("一个格子的预制体")] public GameObject oneCellPrefab; // 预制体: 一个格子
    [Tooltip("世界中心位置坐标")] public GameObject startPositionObject;

    void Start()
    {
        if (startPositionObject != null)
        {
            Vector3 start_position = startPositionObject.transform.position;
            // print($"坐标: {startPosition}");
            GenerateGrid(start_position);
        }
        else
        {
            Debug.Log("Start Position GameObject Null!!!");
            throw new Exception("throw new Exception");
        }
    }

    private void GenerateGrid(Vector3 start_position)
    {
        // 1:  -29 1.5 
        // 2:  -27 1.5
        int m_width = width / 2;
        for (int create_height = 0; create_height <= height; create_height++)
        {
            // 创建中心格子
            create_a_cell(start_position + new Vector3(0 * cellSize, -create_height * cellSize, 0));
            for (int create_width = 1; create_width <= m_width; create_width++)
            {
                create_a_cell(start_position + new Vector3(create_width * cellSize, -create_height * cellSize, 0));
                // 创建左边衍生的格子
                create_a_cell(start_position + new Vector3(-create_width * cellSize, -create_height * cellSize, 0));
            }
        }
    }

    private void create_a_cell(Vector3 m_create_position)
    {
        GameObject cell = Instantiate(oneCellPrefab, m_create_position, Quaternion.identity);
        cell.name = $"cell_{cell.transform.position}";
    }
}