//two-player Xconnect FourX

import TerminalIO.*;//input and out put
import java.util.*;

public class game
{
	public static void main(String [] args)
	{
		int turn=1;//counter to keep track of turns
		KeyboardReader input=new KeyboardReader();//input
		int board[][]=new int[6][7];//connect board
		int p1=0;//player 1's input
		int p2=0;//player 2's input   
						
		System.out.println("Connect four\n");
		System.out.println("0 represents a blank space, 1 player 1, 2 player 2");
		System.out.println("During game, enter 99 for new game, 66 to quit");
		System.out.println("Hit any key to continue..");
		input.pause();
				
		while(p1!=66||p2!=66)
		{
			for(int r=0;r<board.length;r++)//print out matrices
			{
				System.out.print("\n");
				for(int c=0;c<board[0].length;c++)
					System.out.print(" "+board[r][c]+" ");
			}
			System.out.print("\n\n 1  2  3  4  5  6  7 column");
							
			if(turn%2==1)//player 1's turn
			{
				//player 2 check for win////////////////////
				for(int r=0;r<6;r++)//p2 check hor for win
					for(int c=0;c<4;c++)
					{
						if(board[r][c]==2)
							if(board[r][c+1]==2)
								if(board[r][c+2]==2)
									if(board[r][c+3]==2)
									{
										System.out.println("\n\nPLAYER 2 WINS!");
										p2=input.readInt("66 to quit, 99 to restart: ");
									}
									
					}
				for(int r=0;r<3;r++)//p2 check vert for win
					for(int c=0;c<7;c++)
					{
						if(board[r][c]==2)
							if(board[r+1][c]==2)
								if(board[r+2][c]==2)
									if(board[r+3][c]==2)
									{
										System.out.println("\n\nPLAYER 2 WINS!");
										p2=input.readInt("66 to quit, 99 to restart: ");
									}
					}
				for(int r=0;r<3;r++)//p2 check diagonal for win
					for(int c=0;c<4;c++)
					{
						if(board[r][c]==2)
							if(board[r+1][c+1]==2)
								if(board[r+2][c+2]==2)
									if(board[r+3][c+3]==2)
									{
										System.out.println("\n\nPLAYER 2 WINS!");
										p2=input.readInt("66 to quit, 99 to restart: ");
									}
					}
				
					//end of check////////////////
				p1=input.readInt("\nPlayer one's turn, which column? ");
				int r=5;
				int check=1;
				do
				{
					if(board[r][p1-1]==0)
					{
						board[r][p1-1]=1;
						check=-1;
					}
					r--;
				}while(check>0);
			}
			
			if(turn%2==0)//player 2's turn
			{
				//player 1 check for win////////////////////
				for(int r=0;r<6;r++)//p1 check hor for win
					for(int c=0;c<4;c++)
					{
						if(board[r][c]==1)
							if(board[r][c+1]==1)
								if(board[r][c+2]==1)
									if(board[r][c+3]==1)
									{
										System.out.println("\n\nPLAYER 1 WINS!");
										p1=input.readInt("66 to quit, 99 to restart: ");
									}
					}
				for(int r=0;r<3;r++)//p1 check vert for win
					for(int c=0;c<7;c++)
					{
						if(board[r][c]==1)
							if(board[r+1][c]==1)
								if(board[r+2][c]==1)
									if(board[r+3][c]==1)
									{
										System.out.println("\n\nPLAYER 1 WINS!");
										p1=input.readInt("66 to quit, 99 to restart: ");
									}
					}
				for(int r=0;r<3;r++)//p1 check diagonal for win
					for(int c=0;c<4;c++)
					{
						if(board[r][c]==1)
							if(board[r+1][c+1]==1)
								if(board[r+2][c+2]==1)
									if(board[r+3][c+3]==1)
									{
										System.out.println("\n\nPLAYER 1 WINS!");
										p1=input.readInt("66 to quit, 99 to restart: ");
									}
					}	
					//////////end of check/////////////
			
				p2=input.readInt("\nPlayer two's turn, which column? ");
				int r=5;
				int check=1;
				do
				{
					if(board[r][p2-1]==0)
					{
						board[r][p2-1]=2;
						check=-1;
					}
					r--;
				}while(check>0);
			}
						
			turn++;
			
		}//end loop
		
	}//end main
}//end file