proj2

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication101
{
    class Connect4
    {
        private int[,] grid = new int[7, 7];
        int round = 0;
        int row;
        int column;
        int player;
        int stone;
        bool victory;

        //Array das angibt, ob Zahl und Feld stimmt (gefüllt mit 0, 1, 2)


        private void connect4()
        {
            round++;
            if (round == 1)
            {
                Console.WriteLine("Rows and Columns are shown as a 7x7 grid (0-6)");
                Console.WriteLine("---------------------------\n");
                Console.WriteLine("---------------------------\n");

                for (int i = 0; i < 7; i++)
                {
                    for (int j = 0; j < 7; j++)
                    {
                        Console.WriteLine("{0}", grid[i, j]);
                    }
                }
                this.victory = false;

            }
            else
            {
                for (int i = 0; i < 7; i++)
                {
                    for (int j = 0; j < 7; j++)
                    {
                        Console.WriteLine("{0}", grid[i, j]);
                    }
                }
                if (this.victory == false)
                {
                    set_stone();
                }
                else
                {
                    Console.WriteLine("Player {0} won", this.player);
                }
            }
        }

        private void set_stone()
        {
            if (round % 2 == 1)
            {
                this.player = 1;
                this.stone = 1;
            }
            else
            {
                this.player = 2;
                this.stone = 9;
            }
            Console.WriteLine("Player {0} your turn!", this.player);

            Console.WriteLine("row = ");
            int row = Convert.ToInt32(Console.ReadLine());
            this.row = row;

            Console.WriteLine("column = ");
            int column = Convert.ToInt32(Console.ReadLine());
            this.column = column;
            Console.WriteLine();

            check();
        }

        private void check()
        {
            if (this.row < 0 || this.row > 6 || this.column < 0 || this.column > 6)
            {
                Console.WriteLine("Wrong Input! Please try again");
                set_stone();
            }
            if (this.grid[this.row, this.column] == 0)
            {
                this.grid[row, column] = this.stone;
                win();
                connect4();
                return;
            }
            else
            {
                Console.WriteLine("Spot is occupied!");
                set_stone();
            }
        }

        private void win()
        {
            int count = 0;
            int t = 0; // top
            int b = 0; //bot
            int l = 0; // left
            int r = 0; // right

            switch (this.row)
            {
                case 0: t = 1; b = 4; break;
                case 1: t = 2; b = 4; break;
                case 2: t = 3; b = 4; break;
                case 6: b = 1; t = 4; break;
                case 5: b = 2; t = 4; break;
                case 4: b = 3; t = 4; break;
                default: t = 4; b = 4; break;
            }

            switch (this.column)
            {
                case 0: l = 1; r = 4; break;
                case 1: l = 2; r = 4; break;
                case 2: l = 3; r = 4; break;
                case 6: r = 1; l = 4; break;
                case 5: r = 2; l = 4; break;
                case 4: r = 3; l = 4; break;
                default: l = 4; r = 4; break;
            }

            //towards top
            count += counter(t, 0, -1, 0);

            //dowards bottom
            count += counter(b, 0, 1, 0);

            if (count == 3)
            {
                this.victory = true;
                return;
            }
            else { count = 0; }


            //towards right
            count += counter(0, r, 0, 1);

            //towards left
            count += counter(0, l, 0, -1);

            if (count == 3)
            {
                this.victory = true;
                return;
            }
            else { count = 0; }


            //positve diagonal (right)
            count += counter(t, r, -1, 1);

            //negative diagonal (left)
            count += counter(b, l, 1, -1);

            if (count == 3)
            {
                this.victory = true;
                return;
            }
            else { count = 0; }


            //positve diagonal (left)
            count += counter(t, l, -1, -1);

            //negative diagonal (right)
            count += counter(b, r, 1, 1);

            if (count == 3)
            {
                this.victory = true;
                return;
            }
            else { count = 0; }
        }

        private int counter(int positionX, int positionY, int directionX, int directionY)
        {
            int kontrollstein;
            int count = 0;
            int i = 1;
            int j = 0;
            int position = 0;

            if (positionX == 0 || positionY == 0)
            {
                if (positionX == 0) { position = positionY; }
                if (positionY == 0) { position = positionX; }

                for (i = 1; i < position; i++)
                {
                    kontrollstein = this.grid[this.row + i * directionX, this.column + i * directionY];
                    if (kontrollstein == this.stone)
                    {
                        count++;
                    }
                    else
                    {
                        break;
                    }
                }
            }

            else
            {
                for (i = 1; i < positionX; i++)
                {
                    if (j < (positionY - 1)) { j++; }

                    kontrollstein = this.grid[this.row + i * directionX, this.column + j * directionY];
                    if (kontrollstein == this.stone)
                    {
                        count++;
                    }
                    else
                    {
                        break;
                    }
                }
            }


            return count;
        }



        class MainClass
        {
            public static void Main(string[] args)
            {
                Connect4 game = new Connect4();
                game.connect4();
                Console.ReadLine();


            }
        }
    }
}