using System;

namespace ConsoleApplication1
{
    public class TestGrid
    {
        private int[,] grid;
        private int[,] newgrid;

        public int[,] InitGrid()
        {
            grid = new int[4, 4];
            newgrid = new int[4, 4];
            Console.WriteLine("Das Spielfeld hat die Größe {0} x {1}!", 4, 4);
            return grid;
        }

        public void FillGrid() //Befüllung des "ersten" Spielfelds
        {
            //grid[0, 0] = 1;
            //grid[0, 1] = 0;
            //grid[0, 2] = 0;
            //grid[0, 3] = 1;
            //grid[1, 0] = 1;
            //grid[1, 1] = 1;
            //grid[1, 2] = 0;
            //grid[1, 3] = 1;
            //grid[2, 0] = 0;
            //grid[2, 1] = 0;
            //grid[2, 2] = 1;
            //grid[2, 3] = 1;
            //grid[3, 0] = 1;
            //grid[3, 1] = 0;
            //grid[3, 2] = 1;
            //grid[3, 3] = 1;

            grid[0, 0] = 1;
            grid[0, 1] = 1;
            grid[0, 2] = 1;
            grid[0, 3] = 0;
            grid[1, 0] = 1;
            grid[1, 1] = 1;
            grid[1, 2] = 0;
            grid[1, 3] = 1;
            grid[2, 0] = 1;
            grid[2, 1] = 0;
            grid[2, 2] = 0;
            grid[2, 3] = 0;
            grid[3, 0] = 0;
            grid[3, 1] = 1;
            grid[3, 2] = 1;
            grid[3, 3] = 1;


            int test = grid[3, 3];

            for (int height = 0; height < 4; height++)
            {
                for (int length = 0; length < 4; length++)
                {
                    if (grid[height, length] == 1)
                    {
                        Console.Write("X");
                    }
                    else
                    {
                        Console.Write("O");
                    }
                }
                Console.WriteLine();
            }
            Console.ReadKey();
            
        }

        public int NeighborCheck(int height, int length, int varHeight, int varLength)
            // Checken, ob Nachbarn leben & ob Nachbarn im Feld sind
        {
            int result = 0;
            int checkHeight = height + varHeight;
            int checkLength = length + varLength;

            if (IsCheckPositionInGrid(checkHeight, checkLength))
            {
                result = grid[checkHeight, checkLength];
            }

            return result;
        }

        private bool IsCheckPositionInGrid(int checkHeight, int checkLength)
        {
            return (checkHeight >= 0 && checkHeight < 4) &&
                   (checkLength >= 0 && checkLength < 4);
        }

        public void NewGeneration() // Neue Generation des Spiels erstellen
        {
            for (int i = 2; i < 100; i++)
            {
                Console.WriteLine(i + ". Generation");
                for (int height = 0; height < 4; height++)
                {
                    for (int length = 0; length < 4; length++)
                    {
                        int neighborsAlive =
                            NeighborCheck(height, length, 0, 1)
                            + NeighborCheck(height, length, 0, -1)
                            + NeighborCheck(height, length, 1, -1)
                            + NeighborCheck(height, length, 1, 0)
                            + NeighborCheck(height, length, 1, 1)
                            + NeighborCheck(height, length, -1, -1)
                            + NeighborCheck(height, length, -1, 0)
                            + NeighborCheck(height, length, -1, 1);

                        int isAlive = grid[height, length];

                        if (isAlive == 1)
                        {
                            if (neighborsAlive == 2 || neighborsAlive == 3)
                            {
                                newgrid[height, length] = 1;
                                Console.Write("X");
                            }
                            else
                            {
                                newgrid[height, length] = 0;
                                Console.Write("O");
                            }
                        }
                        else
                        {
                            if (neighborsAlive == 3)
                            {
                                newgrid[height, length] = 1;
                                Console.Write("X");
                            }
                            else
                            {
                                newgrid[height, length] = 0;
                                Console.Write("O");
                            }
                        }
                    }
                    Console.WriteLine();
                    
                }
                Console.ReadKey();
                grid = newgrid;
            }
            
        }
    }
}