I am trying to create a Tic Tac Toe game in Java using a 2 dimensional array. The computer has to do the smartest move.
/* This program creates an interactive game of Tic-Tac-Toe
* The computer is able to play intelligently and block the user and try to win
* It uses a 2D array to create a grid for the game
* The user makes their moves using a coordinate system
*/
//for the Scanner
import java.util.*;
public class TicTacToe {
private static boolean first = false;
private static char[][] board = new char[3][3];
private static int aiScore = 0;
private static int playerScore = 0;
public static void main(String[] args){
intro();
}
public static void intro(){
Scanner console = new Scanner(System.in);
System.out.println();
System.out.println();
System.out.println("Welcome to Tic-Tac-Toe");
System.out.println("To play this classic game against the computer,");
System.out.println("You will choose where to play using coordinates(1-3)");
System.out.println("");
System.out.println("Would you like to go first?");
String goFirst = console.nextLine();
if(goFirst.substring(0,1).equalsIgnoreCase("y")){
first = true;
}
initializeBoard();
getBoard();
startGame(console);
}
public static void startGame(Scanner console){
//clears the board to start the game
if(first == true){
userTurn(console);
}else{
compTurn(console);
}
}
//allows user to play
public static void userTurn(Scanner console){
System.out.println("Where would you like to play?");
int r = console.nextInt() - 1;
int c = console.nextInt() - 1;
if(board[r][c] == ' '){
board[r][c] = 'X';
if(board[0][0] == 'X'){
getBoard();
playerScore += 1;
checkScoreUser(console);
} else if(board[0][2] == 'X'){
getBoard();
playerScore += 3;
checkScoreUser(console);
} else if(board[2][0] == 'X'){
getBoard();
playerScore += 1000;
checkScoreUser(console);
} else if(board[2][2] == 'X'){
getBoard();
playerScore += 3000;
checkScoreUser(console);
} else if(board[1][1] == 'X'){
getBoard();
playerScore += 200;
checkScoreUser(console);
} else if(board[0][1] == 'X'){
getBoard();
playerScore += 2;
checkScoreUser(console);
} else if(board[1][0] == 'X'){
getBoard();
playerScore += 100;
checkScoreUser(console);
} else if(board[1][2] == 'X'){
getBoard();
playerScore += 300;
checkScoreUser(console);
} else if(board[2][1] == 'X'){
getBoard();
playerScore += 2000;
checkScoreUser(console);
}
} else if (board[r][c] == 'X' || board[r][c] == 'O'){
first = true;
System.out.println("Please choose an empty space");
startGame(console);
}
System.out.println("Cat's Game");
}
//allows computer to play
public static void compTurn(Scanner console){
System.out.println("Now it's my turn");
System.out.println("");
if(board[0][0] == ' '){
board[0][0] = 'O';
getBoard();
userTurn(console);
aiScore += 1;
} else if(board[0][2] == ' '){
board[0][2] = 'O';
getBoard();
userTurn(console);
aiScore += 3;
} else if(board[2][0] == ' '){
board[2][0] = 'O';
getBoard();
userTurn(console);
aiScore += 1000;
} else if(board[2][2] == ' '){
board[2][2] = 'O';
getBoard();
userTurn(console);
aiScore += 3000;
} else if(board[1][1] == ' '){
board[1][1] = 'O';
getBoard();
userTurn(console);
aiScore += 200;
} else if(board[0][1] == ' '){
board[0][1] = 'O';
getBoard();
userTurn(console);
aiScore += 2;
} else if(board[1][0] == ' '){
board[1][0] = 'O';
getBoard();
userTurn(console);
aiScore += 100;
} else if(board[1][2] == ' '){
board[1][2] = 'O';
getBoard();
userTurn(console);
aiScore += 300;
} else if(board[2][1] == ' '){
board[2][1] = 'O';
getBoard();
userTurn(console);
aiScore += 2000;
}
}
/*public static void checkUser(Scanner console){
if(playerScore == 3){
board[0][2] = 'O';
} else if (playerScore ==)
}*/
//score checkers
public static void checkScoreUser(Scanner console){
if(aiScore == 3201 || aiScore == 1203 || aiScore == 6 ||
aiScore == 600 || aiScore == 6000 || aiScore == 1101 ||
aiScore == 2202 || aiScore == 3303){
System.out.println("I win!!! Hahahahahaha!!!!!!");
intro();
} else if (playerScore == 3201 || playerScore == 1203 || playerScore == 6 ||
playerScore == 600 || playerScore == 6000 || playerScore == 1101 ||
playerScore == 2202 || playerScore == 3303){
System.out.println("You won!");
intro();
} else {
compTurn(console);
}
}
public static void checkScoreComp(Scanner console){
if(aiScore == 3201 || aiScore == 1203 || aiScore == 6 ||
aiScore == 600 || aiScore == 6000 || aiScore == 1101 ||
aiScore == 2202 || aiScore == 3303){
System.out.println("I win!!! Hahahahahaha!!!!!!");
intro();
} else if (playerScore == 3201 || playerScore == 1203 || playerScore == 6 ||
playerScore == 600 || playerScore == 6000 || playerScore == 1101 ||
playerScore == 2202 || playerScore == 3303){
System.out.println("You won!");
intro();
} else {
userTurn(console);
}
}
//board stuff
//initializes board and fills it with black spaces
public static void initializeBoard(){
for(int r = 0; r < 3; r++){
for(int c = 0; c < 3; c++){
board[r][c] = ' ';
}
}
}
//prints the actual board out
public static void getBoard(){
String bar = " =============";
System.out.println(" 1 2 3");
System.out.println(bar);
System.out.println("1 " + board[0][0] + " | " + board[0][1] + " | " + board[0][2]);
System.out.println(bar);
System.out.println("2 " + board[1][0] + " | " + board[1][1] + " | " + board[1][2]);
System.out.println(bar);
System.out.println("3 " + board[2][0] + " | " + board[2][1] + " | " + board[2][2]);
System.out.println(bar);
System.out.println("");
}
}
