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HTML

              
                <div class="info">Scroll to see times</div>
<div class="hud"></div>
              
            
!

CSS

              
                .info {
  font-weight: bold;
  font-size: 18px;
  padding: 10px;
  padding-bottom: 0;
}

.hud {
  position: fixed;
  width: 200px;
  padding: 10px;
  font-family: monospace;
  font-size: 14px;
  font-weight: bold;
}

              
            
!

JS

              
                
var hud = $(".hud");

// Just an alias to make it shorter to write
var ticker = TweenLite.ticker;

var hasChanges = false;

var last = 0;
var times = [];

var timer = TweenLite.delayedCall(0.5, function() {  
  TweenMax.staggerTo(times, 0.25, { onComplete: removeTime }, 0.05);  
  times = [];
}).pause();

// Add listener 
ticker.addEventListener("tick", update);

$(window).on("wheel", function() {     
  
  // Set the flag
  hasChanges = true;
});

function update() {
   
  // Check flag
  if (!hasChanges) return;
   
  var time  = ticker.time;
  var delta = time - last;
  last = time;
  
  var text = $("<div/>").text(delta * 1000).prependTo(hud);
  
  if (!delta) text.css("color", "red");
  
  times.push(text);
  timer.restart(true);
  
  // Reset flag
  hasChanges = false;
}

function removeTime() {
  $(this.target).remove();
}








              
            
!
999px

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