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

public class MainGame2 : MonoBehaviour
{
    // Start is called before the first frame update
    public string map =
        ".....\n" +
        "..XF.\n" +
        "..XX.\n" +
        "S....\n" +
        "4 5";
    int rows, cols;
    string[] table;
    GameObject[,] objects;
    List<int[]> placesToCheck=new List<int[]>();
    float lastTime = 0;
    bool isCorrectPlace(int[] place)
    {
        if (place[0] < 0) { return false; }
        if (place[1] < 0) { return false; }
        if (place[0] >= rows) { return false; }
        if (place[1] >= cols) { return false; }
        return table[place[0]][place[1]] == '.' && 
           objects[place[0],place[1]].GetComponent<Renderer>().material.color==Color.white;
    }
    List<int[]> freeMoves(int row, int col)
    {
        List<int[]> answers = new List<int[]>();
        answers.Add(new int[] { row - 1, col });
        answers.Add(new int[] { row + 1, col });
        answers.Add(new int[] { row, col - 1 });
        answers.Add(new int[] { row, col + 1 });
        List<int[]> answers2 = new List<int[]>();
        foreach (int[] answer in answers)
        {
            if (isCorrectPlace(answer))
            {
                answers2.Add(answer);
            }
        }
        return answers2;
    }
    void Start()
    {
        table = map.Split(new char[] { '\n' });
        string lastline = table[table.Length - 1];
        string[] numbers = lastline.Split(new char[] { ' ' });
        rows = int.Parse(numbers[0]);
        cols = int.Parse(numbers[1]);
        int startrow = 0, startcolumn = 0, finishrow = 0, finishcolumn = 0;
        objects = new GameObject[rows, cols];
        for (int rownr = 0; rownr < rows; rownr++)
        {
            for (int colnr = 0; colnr < cols; colnr++)
            {
                GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
                cube.transform.localScale = Vector3.one * 0.5f;
                cube.transform.position = new Vector3(colnr, -rownr, 0);
                objects[rownr, colnr] = cube;
                if (table[rownr][colnr] == '.')
                {
                    cube.transform.localScale = Vector3.one * 0.3f;
                }
                if (table[rownr][colnr] == 'S')
                {
                    cube.GetComponent<Renderer>().material.color = Color.green;
                    startrow = rownr; startcolumn = colnr;
                }
                if (table[rownr][colnr] == 'F')
                {
                    cube.GetComponent<Renderer>().material.color = Color.red;
                    finishrow = rownr; finishcolumn = colnr;
                }

                //Make Start and Finish different color
            }
        }
        placesToCheck.Add(new int[] { startrow, startcolumn });
    }

    // Update is called once per frame
    void Update()
    {
        if (Time.time >= lastTime + 1)
        {
            // List<int[]> newPlacesToCheck = new List<int[]>();
            List<int[]> newFreeMoves = new List<int[]>();
            foreach (int[] place in placesToCheck)
            {
                foreach (int[] move in freeMoves(place[0], place[1]))
                {
                    newFreeMoves.Add(move);
                    objects[move[0], move[1]].GetComponent<Renderer>().material.color = Color.yellow;
                }
            }
            placesToCheck = newFreeMoves;
            lastTime = Time.time;
        }
    }
}