var player1 = {x: 10, y: 200};
    var player2 = {x: totalWidth-20, y: 200};

    var ball = {x: totalWidth/2-5,
              y: totalHeight/2-5,
              xSpeed: 3,
              ySpeed: 3};


    function update(){

    fill = "black";

    rectangle(player1.x, player1.y, 10, 80, "white");
    rectangle(player2.x, player2.y, 10, 80, "white");

    rectangle(ball.x, ball.y, 10, 10, "white");

    if (ball.y < totalHeight-10){ ball.ySpeed = -ball.ySpeed; }
    if (ball.y < 0)             { ball.ySpeed = -ball.ySpeed; }

    if (ball.x < totalWidth-30 &&
        ball.y > player2.y &&
        ball.y < player2.y+80)
    {
      ball.xSpeed = -ball.xSpeed;
    }


      else if (ball.x > totalWidth-30)
    {
      ball.x = totalWidth/2-5;
    }
    if (ball.x < 20 &&
        ball.y > player1.y &&
        ball.y < player1.y +80)
    {
      ball.xSpeed = -ball.xSpeed;
    }
    else if (ball.x <20)
    {
      ball.x = totalWidth/2-5;
    }


    if (keyboard.w) {player1.y -= 5;}
    if (keyboard.s) {player1.y += 5;}

    if (keyboard.up) {player2.y -= 5;}
    if (keyboard.down) {player2.y += 5;}

    ball.x += ball.xSpeed;
    ball.y += ball.ySpeed;

    }