/* Online Java - IDE, Code Editor, Compiler Online Java is a quick and easy tool that helps you to build, compile, test your programs online. */ import java.util.Scanner; import java.io.*; import java.util.*; interface playConnectFour { public void insertChip(); public boolean checkAvailability(int input, int colour, String name); public boolean checkConnectFour(int colour); public void viewBoard(); } class connectFour implements playConnectFour { int [][] board; int rows = 6; int columns = 7; int j; int input; Player1 p1 = new Player1(this, board); // not sure why this object ref needs to be passed down //Player2 p2 = new Player2(this,board); public connectFour(int[][] board) { this.board=board; } public void insertChip() { } public void viewBoard() { for (int [] temp: board) { System.out.println(Arrays.toString(temp)); } } public boolean checkConnectFour(int colour) { //this will have to check if 4 in a row. // this will check first in the vertical direction //int rowsBelow = j; //int rowsAbove = (rows-1) -j; // 1 has been subtracted due to z index in variable j int vertical=0; int horizontal=0; int diagonal=0; int counter=0; // CHECKING VERTICALLY // need logic here that if there is not a vertical yellow, it will set count back to 0 // not so easy since it needs to count upwards and downwards for (int k = j; k>=0; k--) // this is checking all rows below (same column) for yellows { if (board[k][input]==colour) //there is also a yellow in that position { vertical++; } if (board[k][input]==0) // this is problem part of code... since it might find non-matching colour below... // but vertically above there might be matching...... // so need to store counter in another variable potentially. { counter=vertical; vertical=0; } } for (int k = j; k<=7; k++) // this is checking all rows above (same column) for yellows { if (board[k][input]==colour) //there is also a yellow in that position { vertical++; } if (board[k][input]==0) { counter=counter+vertical; vertical=0; } } if (counter==3) { System.out.println("connect 4"); //perhaps need a function here to display the board array. return true; } //return false; // CHECKING HORIZONTALLY // WITH HORIZONTAL CHECK, NEED TO CHECK EACH LAYER // SO NEED ANOTHER FOR LOOP // to the right counter=0; for (int j=0; j=0; m--) // this is checking all rows below (same column) for yellows { if (board[j][m]==colour) //there is also a yellow in that position { horizontal++; } if (board[j][m]==0) { counter=counter+horizontal; horizontal=0; } } } if (counter==3) { System.out.println("connect 4"); //perhaps need a function here to display the board array. return true; } counter = 0; // CHECKING DIAGONALLY for (int m = input; m<=columns-1; m++) // this has to reduce columns by 1 to ensure no overrun diagonal check { if (board[j+1][m+1]==colour) //there is also a yellow in that position { diagonal++; } if (board[j+1][m+1]==0) { counter=counter+diagonal; diagonal=0; } if (board[j-1][m+1]==colour) //there is also a yellow in that position { diagonal++; } if (board[j-1][m+1]==0) { counter=counter+diagonal; diagonal=0; } } if (counter==3) { System.out.println("connect 4"); //perhaps need a function here to display the board array. return true; } // checking diagonal in opposite direction counter=0; for (int m = input; m>0; m--) // m is set greater than 0 to allow diagnonal to function { if (board[j-1][m-1]==colour) //there is also a yellow in that position { diagonal++; } if (board[j-1][m-1]==0) { counter=diagonal; diagonal=0; } if (board[j+1][m-1]==colour) //there is also a yellow in that position { diagonal++; } if (board[j+1][m-1]==0) { counter=counter+diagonal; diagonal=0; } } if (counter==3) { System.out.println("connect 4"); //perhaps need a function here to display the board array. return true; } return false; } public boolean checkAvailability(int input, int colour, String name) { this.input=input; String chipColour=""; boolean availability=false; //yellow is being assigned value 1 switch(colour) { case 1: chipColour="Yellow"; break; case 2: chipColour="Red"; break; default: } System.out.println(name + " has dropped the " + chipColour + " chip"); System.out.println("This is the column chip placed in:" + input); for (j=0; j<7;j++) { //System.out.println("value of j: " + j); // the coin will drop to lowest position on the grid if (board[j][input]==0) // all default values in declared array is 0 { board[j][input]=colour; // this will input a 1 to denote yellow if available. 2 to denote red availability=true; viewBoard(); checkConnectFour(colour); break; } } if (availability) { return true; } return false; } } public class Main { public static void main(String[] args) { System.out.println("Welcome to Online IDE!! Happy Coding :)"); //int [][] board = new int [5][6]; // this ensures 7 columns and 6 rows int [][] board = { {0,0,0,0,0,0,0}, {1,1,1,1,0,0,0}, {0,0,0,0,0,0,0}, {0,0,0,0,0,0,0}, {0,0,0,0,0,0,0}, {0,0,0,0,0,0,0}, }; System.out.println(board[1][1]); connectFour cf = new connectFour(board); } } class Player1 { int[][] currentBoard; connectFour cf; chips yellow; String name = "Player 1"; Player2 p2; enum chips { YELLOW, RED; } public Player1(connectFour cf, int[][] currentBoard) { this.currentBoard=currentBoard; this.cf=cf; chips yellow = chips.YELLOW; this.yellow=yellow; insertYellowChip(yellow); p2=new Player2(cf, currentBoard); // do not need this object.. but it is here just incase need to get instance of p1 } public void insertYellowChip(chips yellow) { System.out.println("Which column would you like to insert the coin"); Scanner scan = new Scanner(System.in); int selection = scan.nextInt(); cf.checkAvailability(selection,1,name); } public void insertYellowChip() { insertYellowChip(yellow); } } class Player2 { int[][]currentBoard; connectFour cf; String name = "Player 2"; enum chips { YELLOW, RED; } public Player2(connectFour cf, int[][] currentBoard) { this.cf=cf; this.currentBoard=currentBoard; chips red = chips.RED; insertRedChip(red); } public void insertRedChip (chips red) { System.out.println("Which column would you like to insert the coin"); Scanner scan = new Scanner(System.in); int selection = scan.nextInt(); cf.checkAvailability(selection,2,name); } }