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HTML

              
                <a-scene>
  <a-assets timeout="10000">
    <a-mixin id="circle" geometry="primitive: circle; radius: 0.3;" material="color: black;" rotation="-90 0 0"></a-mixin>
    <template id="chris" type="text/html">
      <a-sphere color="#ffe0bd">
        <a-entity id="#eyes" position="0 0.3 1">
            <a-circle color="#333" radius="0.1" position="0.3 0 0"></a-circle>
            <a-circle color="#333" radius="0.1" position="-0.3 0 0"></a-circle>
            <a-animation attribute="rotation"
               delay="3200"
               dur="250"
               fill="forwards"
               to="360 0 0"
               repeat="indefinite"></a-animation>
          </a-entity>
        <a-box color="#ffad60" height="0.5" width="0.2" depth="0.2" position="0 0.2 0.9" rotation="-25 0 0" ></a-box>
        <a-sphere color="#6a4e42" radius="1.01" phi-start="0" phi-length="50" rotation="-30 0 90"  opacity="0.2"></a-sphere>
        <a-torus color="#333" arc="135" radius="0.25" rotation="2d0 0 200" position="0 -0.25 1" radius-tubular="0.01"></a-torus>
      </a-sphere>
    </template>
    <template id="dave" type="text/html">
      <a-sphere color="#ffe0bd">
        <a-entity id="#eyes" position="0 0.3 1">
            <a-circle color="#333" radius="0.1" position="0.3 0 0"></a-circle>
            <a-circle color="#333" radius="0.1" position="-0.3 0 0"></a-circle>
            <a-animation attribute="rotation"
               delay="3000"
               dur="250"
               fill="forwards"
               to="360 0 0"
               repeat="indefinite"></a-animation>
          
          </a-entity>
        <a-box color="#ffad60" height="0.5" width="0.2" depth="0.2" position="0 0.2 0.9" rotation="-25 0 0" ></a-box>
        
          <a-sphere color="#6a4e42" radius="1.05" position="0 0.2 -0.05" phi-start="0" phi-length="180" rotation="-115 22 0"  side="double"></a-sphere>
          <a-sphere color="#6a4e42" radius="1.05" position="0 0.2 -0.07" phi-start="0" phi-length="180" rotation="-130 -20 0"  side="double"></a-sphere>

        
        <a-torus color="#6a4e42" arc="180" radius="1" radius-tubular="0.05" rotation="30 180 180" position="0 0.2 0.2" ></a-torus>
        <a-torus color="#6a4e42" arc="180" radius="0.5" radius-tubular="0.05" rotation="-45 180 0" position="0 -0.55 0.6"></a-torus>
      </a-sphere>
  </a-entity>     

    </template>
    <template id="hole" type="text/html">
	   	<a-circle mixin="circle">      
      	<a-sphere radius="0.2" position="0 0 -1" color="transparent" rotation="62.5 0 0">
          <a-entity template="src: #${mole}" scale="0.21 0.21 0.21"></a-entity>
          <a-animation begin="down" dur="1000" easing="ease-out" attribute="position" fill="forwards" from="0 0 0.25" to="0 0 -0.5"></a-animation>
          <a-animation begin="up" easing="ease-out" attribute="position" fill="forwards" from="0 0 -1" to="0 0 0.25"></a-animation>
          <a-animation begin="shake" attribute="rotation" dur="500" fill="backwards" to="360 360 0"></a-animation>
  		  </a-sphere>
      </a-circle>
    </template>
    <img id="wood" src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/17/reclaimed_wood.jpg"  crossorigin="anonymous">
  </a-assets>

  <!-- Environment -->
  <a-box color="#F96C06" position="0 0.25 -3" width="3" depth="2" rotation="15 0 0">
    <a-entity id="decorative-holes">
      <a-entity template="src: #hole" data-mole="dave" position="0 0.51 -0.5"></a-entity>
      <a-entity template="src: #hole" data-mole="chris" position="0 0.51 0.5"></a-entity>
      <a-entity template="src: #hole" data-mole="chris" position="1 0.51 -0.5"></a-entity>
      <a-entity template="src: #hole" data-mole="dave" position="1 0.51 0.5"></a-entity>
      <a-entity template="src: #hole" data-mole="chris" position="-1 0.51 -0.5"></a-entity>
      <a-entity template="src: #hole" data-mole="dave" position="-1 0.51 0.5"></a-entity>
    </a-entity>

    <a-sphere id="startBtn" color="green" radius="0.1" position="1.3 0.3 0.95">
      <a-animation begin="click" dur="100" attribute="position" fill="backwards" to="1.3 0.3 0.93"></a-animation>
    </a-sphere>
  </a-box>

  <!-- UI -->
  <a-text value="TIME" position="-1.2 2.2 -4" font='mozillavr' wrap-count="30"></a-text>
  <a-text id="timer" value="60" position="-1.3 2 -4" font='mozillavr' wrap-count="10"></a-text>
  <a-text value="SCORE" position="0.3 2.2 -4" font='mozillavr' wrap-count="30"></a-text>
  <a-text id="score" value="0" position="0.3 2 -4" font='mozillavr' wrap-count="10"></a-text>

  <!-- Environment -->
  <a-sky color="#000000"></a-sky>
  <a-plane color="#6a4e42" material="src: #wood; repeat: 10 10" height="20" width="20" rotation="-90 0 90" shader="flat"></a-plane>
<!--   <a-entity id="muzak" sound="src: https://s3-us-west-2.amazonaws.com/s.cdpn.io/17/carnival.mp3; volume: 0.4; poolSize: 4;"></a-entity>
   -->
<!-- Camera -->
  <a-camera universal-controls>
    <a-cursor fuse-timeout="200" color="#0099FF"></a-cursor>
  </a-camera>
</a-scene>

<audio id="audio2" src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/17/carnival.mp3"></audio>
              
            
!

CSS

              
                
              
            
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JS

              
                var moles = document.querySelectorAll('a-circle > a-sphere');
var score = 0;
var scoreEl = document.querySelector('#score');
var timerEl = document.querySelector('#timer');
// var musicEl = document.querySelector('#muzak');
var musicEl2 = document.querySelector('#audio2');
var startBth = document.querySelector('#startBth');
var gameover = true;
var gameTimer;

// Let's automate them moles!
var automateMoles = function(){
  for(let i=0;i<moles.length;i++) {

    let mole = moles[i];

    // Make the mole pop up.
    let up = function(){

      if(!mole.is('up') && !gameover) {
        mole.emit('jump');
        mole.addState('up');

        if(!gameover) {
          moleTimer = window.setTimeout(down, Math.max(1000, Math.random() * 3000));
        } else {
          down();
        }
      }
    };

    // Make the mole go down, either on timeout or click.
    let down = function() {
      mole.emit('down');
      mole.removeState('up');

      if(!gameover) {
        moleTimer = window.setTimeout(up, Math.max(2000, Math.random() * 15000));    
      }
    };

    // When clicked or focus-clicked...
    // Update the scoreboard.
    mole.addEventListener('click', function(){
      if(mole.is('up')) {
        mole.emit('shake');
        score++;
        scoreEl.setAttribute('value', score);
        down();
      }
    });

    let moleTimer = window.setTimeout(up, Math.random() * 12000);
  }
}

// Update the timer every 1s.
var updateTimer = function(){
  let currTime = parseInt(timerEl.getAttribute('value'), 10);
  
  if(currTime === 0) {
    // Finish State
    gameover = true;
//    musicEl.components.sound.stopSound();
    musicEl2.pause();
    musicEl2.currentTime = 0;
  } else {
    // Update Timer
    timerEl.setAttribute('value', currTime - 1);
    gameTimer = window.setTimeout(updateTimer, 1000);
 }
};

// Start the game
// Reset the scoreboard and timer
// Unfreeze the gameover state
// Start the timer
var startGame = function() {
  score = 0;
  
  scoreEl.setAttribute('value', 0);
  timerEl.setAttribute('value', 60);
  
  gameover = false;
  
//  musicEl.components.sound.playSound();
  musicEl2.play();
  window.clearTimeout(gameTimer);

  window.setTimeout(automateMoles, 100);
  gameTimer = window.setTimeout(updateTimer, 100);  
}

// When the start button is clicked... 
// start the the game.
startBtn.addEventListener('click', startGame);

              
            
!
999px

Console