let h;

​

let board = [

    ['','',''],

    ['','',''],

    ['','','']

];

​

let player1 = 'X';

let player2 = 'O';

​

let currentPlayer;

​

function setup() {

    createCanvas(400,400);

    background(255);

    w = width/3;

    h = height/3;

    let toss = random(1);

    if(toss == 0){

        currentPlayer = player1;

    }else{

        currentPlayer = player2;

    }

}

​

function playerChanger(currentPlayer){

    if(currentPlayer == player1){

        return player2;

    }else if(currentPlayer == player2){

        return player1;

    }

}

​

function equals3(a, b, c){

    return a==b && b==c && a!='';

}

​

​

function Winner(){

    //Rows check

    //Columns check

    for(let i=0; i<3; i++){

        if(equals3(board[i][0],board[i][1],board[i][2])) {

            print("The winner is ",board[i][0]);

            return true;

        }

        else if(equals3(board[0][i],board[1][i],board[2][i])){

            print("The winner is ",board[0][i]);

            return true;

        }

    }

​

    //Diagonal check

    if(equals3(board[0][0],board[1][1],board[2][2])){

        print("The winner is ",board[0][0]);

        return true;

    }else if(equals3(board[2][0],board[1][1],board[0][2])){

        print("The winner is ",board[2][0]);

        return true;

    }

​

    //checks for free space

    for(let i=0; i<3; i++){

        for(let j=0; j<3; j++){

            if(board[j][i] == ''){

                return false;

            }

        }

    }

    //Else the game tied

    print("The game is Tied!!")

    return true;

}

​

function mousePressed(){

    let i = floor(mouseX/w);

    let j = floor(mouseY/h);    

    if(board[i][j] ==''){

        board[i][j] = currentPlayer;

        currentPlayer = playerChanger(currentPlayer);

    }

}

​

function draw() {

    strokeWeight(3);

    fill(0);

    line(w*1,0,w*1,height);

    line(w*2,0,w*2,height);

    line(0,h*1,width,h*1);

    line(0,h*2,width,h*2);

​

    let offset = w/4;

​

    for(let i=0; i<3; i++){

        for(let j=0; j<3; j++){

            let x = w*j;

            let y = h*i;

            if(board[j][i] == player1){

                line(x+offset, y+offset, x+w-offset, y+h-offset);

                line(x+offset, y+h-offset, x+w-offset, y+offset);

            }else if(board[j][i] == player2){

                ellipseMode(CORNER);

                noFill();

                ellipse(x+offset,y+offset,w/2);

            }   

        }

    }

    if(Winner()){

        noLoop();

    }

}