ProjectDDD/Assets/_Datas/Scripts/CellManager.cs

using System.Diagnostics;
using UnityEngine;

public class CellManager : MonoBehaviour
{
    public RectTransform cellCanvas;
    public CellUI cell;

    public int minX = -20;
    public int maxX = 20;
    public int minZ = -20;
    public int maxZ = 20;

    // 0 == 비어있음, 1 == 차있음, 2 == 잠김
    public const int offsetZ = 40;
    private const int mapSize = 80;
    private int[] tiles;
    private CellUI[] tileUIs;

    void Start()
    {
        tiles = new int [mapSize * mapSize];

        // TODO: 데이터 입력
        for (int i = 0; i < mapSize * mapSize; i++)
        {
            tiles[i] = 0;
        }

        cell.transform.SetParent(null);
        cell.gameObject.SetActive(false);

        tileUIs = new CellUI[mapSize * mapSize];
        for (int i = 0; i < mapSize * mapSize; i++)
        {
            var newCell = Instantiate(cell, cellCanvas);
            newCell.gameObject.SetActive(true);
            tileUIs[i] = newCell.GetComponent<CellUI>();
        }

        UpdateCells();
    }

    public static Vector3 CellToWorld(Vector2Int cellPos)
    {
        var worldX = (cellPos.x - cellPos.y) * 0.5f * 1.414f; // sqrt(2)
        var worldZ = -(cellPos.x + cellPos.y) * 0.5f * 1.414f + offsetZ;
        return new Vector3(worldX, 0f, worldZ);
    }

    public static Vector2Int WorldToCell(Vector3 worldPos)
    {
        var cellX = Mathf.RoundToInt((worldPos.x - (worldPos.z - offsetZ)) / 1.414f);
        var cellY = Mathf.RoundToInt((-(worldPos.z - offsetZ) - worldPos.x) / 1.414f);
        return new Vector2Int(cellX, cellY);
    }

    public static int GetCellID(Vector2Int cellPos)
    {
        return cellPos.x + cellPos.y * mapSize;
    }

    public static Vector3 GetCellWorldPos(int cellPos)
    {
        int x = cellPos % mapSize;       // x는 열 (가로)
        int y = cellPos / mapSize;       // y는 행 (세로)
        return CellToWorld(new Vector2Int(x, y));
    }
    
    private void Update()
    {
        UpdateCells();
    }

    public void UpdateCells()
    {
        for (int i = 0; i < mapSize * mapSize; i++)
        {
            var worldPos = GetCellWorldPos(i);
            // 바운더리체크 함수로 빼기
            if (minX > worldPos.x || worldPos.x > maxX)
            {
                tileUIs[i].gameObject.SetActive(false);
                continue;
            }

            if (minZ > worldPos.z || worldPos.z > maxZ)
            {
                tileUIs[i].gameObject.SetActive(false);
                continue;
            }

            tileUIs[i].SetTile(tiles[i]);

            tileUIs[i].gameObject.SetActive(true);
            tileUIs[i].transform.position = GetCellWorldPos(i);
        }
    }

    public void SetupCell(Vector3 position)
    {
        tiles[GetCellID(WorldToCell(position))] = 1;
    }
}