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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              <div class="play-area">
  
  <div class="court court-left">
    <div class="wall gone" id="wall-left">
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
    </div>
    <div class="score gone" id="score-left">0</div>
    <div class="paddle gone" id="paddle-left"></div>
  </div>
  <div class="court court-right">
    <div class="score gone" id="score-right">0</div>
    <div class="wall gone" id="wall-right">
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
      <span>🔥</span>
    </div>
    <div class="paddle gone" id="paddle-right"></div>
  </div>
  
  <div class="ball"></div>
</div>
<button role="button" class="play-btn">PLAY</button>

<audio controls="controls" id="audio-hit">
  <source src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/1145795/pong_beeep.wav" type="audio/wav">
</audio>
<audio controls="controls" id="audio-miss">
  <source src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/1145795/pong_peeeeeep.wav" type="audio/wav">
</audio>
            
          
!

CSS

            
              $dark: #333;
$darker: #1c1c1c;
$darkest: #000;
$light: #fff;

html { box-sizing: border-box; } *, *::before, *::after { box-sizing: inherit; }
html {
  height: 100vh;
}
body {
  font-family: 'Press Start 2P', cursive;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: $darkest;
}
audio {
  display: none;
}
.play-area {
  background: $darker;
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: 700px;
  height: 600px;
}
.court {
  position: relative;
  text-align: center;
  display: grid;
}
.court-left {
  /* the left column is for when the ball is 'out' */
  padding-right: 2px;
  grid-template-columns: 30px 1fr;
  background-image: linear-gradient(to bottom, $light 50%, $darker 50%);
  background-position: right top;
  background-repeat: repeat-y;
  background-size: 2px 20px;
}
.court-right {
  /* the right column is for when the ball is 'out' */
  grid-template-columns: 1fr 30px;
}
.wall {
  background: $dark;
  width: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: stretch;
  padding: 5px 0;
  fonr-size: 20px;
  overflow: hidden;
  text-align: center;
}
.gone {
  pointer-events: none;
  opacity: 0;
}

.paddle, .ball {
  position: absolute;
}
.paddle {
  width: 30px;
  height: 80px;
  background: $light;
}
#paddle-left {
  left: 0;
}
#paddle-right {
  right: 0;
}

.score {
  background: $darker;
  color: $light;
  font-size: 40px;
  padding-top: 20px;
}

.play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Press Start 2P', cursive;
  padding: 20px 40px;
  font-size: 25px;
  background: $darkest;
  color: $light;
  border: 2px solid $light;
  cursor: pointer;
  &:hover {
    background: $light;
    color: $darkest;
  }
}

 //This bit replaces the cursor with a base64 version of a 6x6px white square. I could have replaxced the cursor using a div via JS (in conjunction with cursor: none) but that could have created lag due to mousemove listener, this way seems snappier.
.play-area { 
  cursor: url('data:image/png;base64,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'), auto;
}
            
          
!

JS

            
              let leftsTurn = true;
let paddleSize = 70;
let difficulty = 0.1;
let score = 0;
const walls = document.querySelectorAll('.wall');
const paddles = document.querySelectorAll('.paddle');
const paddleLeft = document.getElementById('paddle-left');
const paddleRight = document.getElementById('paddle-right');
const wallLeft = document.getElementById('wall-left');
const wallRight = document.getElementById('wall-right');
const scoreLeft = document.getElementById('score-left');
const scoreRight = document.getElementById('score-right');
const playBtn = document.querySelector('.play-btn');
const audioHit = document.getElementById('audio-hit');
const audioMiss = document.getElementById('audio-miss');

function reset() {
  leftsTurn = true;
  paddleSize = 70;
  difficulty = 0.1;
  score = 0;
  scoreLeft.classList.remove('gone');
  scoreRight.classList.remove('gone');
  wallLeft.classList.add('gone');
  paddleLeft.classList.add('gone');
  wallRight.classList.remove('gone');
  paddleRight.classList.remove('gone');
  playBtn.style.display = 'none';
}

function gameOver() {

  audioMiss.play();
  wallRight.classList.add('gone');
  paddleRight.classList.add('gone');
  wallLeft.classList.add('gone');
  paddleLeft.classList.add('gone');


  if (score > 10) {
    playBtn.innerHTML = `🎉 ${score}pts 🎉`;
  } else {
    playBtn.innerHTML = '🙈🙈🙈'
  }

  playBtn.style.display = 'block';
  setTimeout(() => {
    playBtn.innerHTML = 'PLAY'
  }, 2000)
}

function switchTurns() {

  score++;

  leftsTurn = !leftsTurn;

  audioHit.play();

  if (leftsTurn) {
    wallLeft.classList.add('gone');
    paddleLeft.classList.add('gone');
    wallRight.classList.remove('gone');
    paddleRight.classList.remove('gone');
  } else {
    wallRight.classList.add('gone');
    paddleRight.classList.add('gone');
    wallLeft.classList.remove('gone');
    paddleLeft.classList.remove('gone');
  }

  if (score > 20) {
    difficulty = 0.4;
  } else if (score > 10) {
    difficulty = 0.25;
    paddleSize = 50;
  } else if (score > 5) {
    difficulty = 0.15;
    paddleSize = 60;
  }

  $('.paddle').css('height', paddleSize);

}

movePaddles();

playBtn.addEventListener('click', () =>{
  reset();
});

Array.from(paddles).forEach(function(paddle) {
  paddle.addEventListener('mouseenter', function(e) {
    switchTurns();
  })
});

Array.from(walls).forEach(function(wall) {
  wall.addEventListener('mouseenter', function(e) {
    if (leftsTurn) {
      scoreRight.innerHTML = parseFloat(scoreRight.innerHTML) + 1
    } else {
      scoreLeft.innerHTML = parseFloat(scoreLeft.innerHTML) + 1
    }
    gameOver();
  })
});

function newPosition(){
  var h = $('.play-area').height() - paddleSize;
  var nh = Math.floor(Math.random() * h);
  return [nh];  
}

function movePaddles(){
  var newPos = newPosition();
  var oldPos = $('.paddle').offset();
  var speed = calcSpeed([oldPos.top], newPos);

  //this is basically the only reason I've included jQuery...
  $('.paddle').animate({ top: newPos[0] }, speed, function(){
    movePaddles();        
  });
};

function calcSpeed(prev, next) {
  var y = Math.abs(prev[0] - next[0]);
  var speed = Math.ceil(y/difficulty);
  return speed;
}
            
          
!
999px

Console