using System;
using System.Collections;
using UnityEngine;
using UnityEngine.Tilemaps;

public class GenerateTileMap : MonoBehaviour
{
    public int width = 256;
    public int height = 256;
    public float scale = 20f;
    public float offsetX = 0f;
    public float offsetY = 0f;
    Tilemap tilemap;
    public RuleTile ruleTile;
    //public List<TileBase> tiles;

    private void Awake()
    {
        tilemap = GetComponent<Tilemap>();
    }

    public IEnumerator GenerateTiles(Action finishedCallback)
    {
        for (int x = 0; x < width; x++)
        {
            for (int y = 0; y < height; y++)
            {
                float xPerlin = ((float)x / width) * scale + offsetX;
                float yPerlin = ((float)y / height) * scale + offsetY;
                float perlinNoise = Mathf.PerlinNoise(xPerlin, yPerlin);

                if (perlinNoise >= 0.3f)
                {
                    tilemap.SetTile(new Vector3Int(x, y), ruleTile);
                }

            }

            // Update UI every 8 lines
            if ((x % 8) == 0)
            {
                yield return null;
            }
        }
        finishedCallback();
    }
}