['', '', ''],

  ['', '', ''],

  ['', '', ''],

];

​

let players = ['X', 'O'];

​

let currentPlayer;

let available = [];

​

function setup() {

  createCanvas(450, 400);

  frameRate(2);

  currentPlayer = floor(random(players.length));

  for (let j = 0; j < 3; j++) {

    for (let i = 0; i < 3; i++) {

      available.push([i, j]);

    }

  }

}

​

function draw() {

  background(0);

  render();

  checking();

}