crea una ventana en la que se pueda jugar ping pong

function pingpong() {
    var canvas = document.getElementById("myCanvas");
    var ctx = canvas.getContext("2d");

    // Create the ball
    var ballRadius = 10;
    var x = canvas.width/2;
    var y = canvas.height-30;
    var dx = 2;
    var dy = -2;
    var ballColor = "#0095DD";

    // Create the paddle
    var paddleHeight = 10;
    var paddleWidth = 75;
    var paddleX = (canvas.width-paddleWidth)/2;
    var rightPressed = false;
    var leftPressed = false;
    var paddleColor = "#0095DD";

    // Create the brick variables
    var brickRowCount = 3;
    var brickColumnCount = 5;
    var brickWidth = 75;
    var brickHeight = 20;
    var brickPadding = 10;
    var brickOffsetTop = 30;
    var brickOffsetLeft = 30;
    var bricks = [];
    var brickColor = "#00