Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel includes JSX processing.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <div class=bg></div>
<div class=q></div>
<div class=mario></div>
<div class=title>CodePen</div>
              
            
!

CSS

              
                //
// the goal is to have a single sprite, but instead of having one giant image,
// only have the individual loops in sequence. 
// then call that loop however many times before moving to the next loop.
// that is controlled in the $settings map.

//
// some base variables
$sprite-w: 3840px;
$frame-h: 280px;
$frame-w: 240px;
$block-sprite-di: 160px;
$frame-count: $sprite-w / $frame-w;
// seconds per frame for consistent FPS
$spf: 80ms;
// max height of fly (bottom value)
$height: 80%;
// scale down elements
$scale: 0.5;


//
// the frame animation chain. this sequence requires unique keys.
// each sub map describes an animation in the chain.
// iterations: how many times to run the frame loop
// start: the start frame in the sprite
// stop: the stop frame in the sprite
// the order of the maps in this map dictate the sequence
// is converted over to new $keyframes map for this and calculated data
$settings: (
  run-1:   ( iterations:  6, start:  1, stop:  2, y: 0.0 ),
  p-run:   ( iterations:  6, start:  7, stop: 10, y: 0.0 ),
  takeoff: ( iterations:  1, start: 11, stop: 13, y: 0.0 ),
  fly:     ( iterations: 12, start: 14, stop: 16, y: 1.2 ),
  run-2:   ( iterations:  4, start:  1, stop:  2, y: 0.0 ),
  jump:    ( iterations:  2, start:  3, stop:  6, y: 0.25, block: true )
);

//
// function to quickly pull down values from our $settings map
@function setting($which, $val: null) {
  @if $val {
    @return map-get(map-get($settings, $which), $val);
  } @else {
    @return map-get($settings, $which);
  }
}

//
// function to quickly pull down values from our $keyframes map
@function keyframe($which, $val: null) {
  @if $val {
    @return map-get(map-get($keyframes, $which), $val);
  } @else {
    @return map-get($keyframes, $which);
  }
}

//
// creating the frame animation of mario.
// the value of the "animation" property for the element.
// looks like multiple animation declarations with different delays.
$frame-anims: ();
$ongoing-time: 0;
$total-steps: 0;
$block-in: 0;


//
// keyframes will be the fully compiled map we use later on 
// based on animations map settings
$keyframes: ();

// building out $keyframes
@each $anim, $vals in $settings {
  $start: map-get($vals, start);
  $stop: map-get($vals, stop);
  $iterations: map-get($vals, iterations);
  $y: map-get($vals, y);
  $speed: map-get($vals, speed);

  $block: map-get($vals, block);
  // if block, set in position to this frame
  @if $block { $block-in: $ongoing-time; }
  
  // quantity of frames for the animation
  $steps: $stop - $start + 1;
  // length of time relative to the quantity of frames for consistent fps
  $time: $steps * $spf;
  // when to start the anim
  $delay: $ongoing-time;
  // if zero, set delay to null to avoid bad css
  @if $delay == 0 { $delay: null; }
  
  // add values to keyframes
  $keyframes: map-merge($keyframes, ($anim: (
    start: $start, stop: $stop, iterations: $iterations,
    y: $y, spped: $speed, steps: $steps, time: $time, delay: $delay
  )));
  
  // increase total steps for later ref
  $s: setting($anim, iterations) * $steps;
  $total-steps: $total-steps + $s;
  // build out the animation strings, comma-separated
  $frame-anims: append($frame-anims, $anim $time steps($steps) $delay $iterations, comma);
  // increase ongoing time for use in the delay of next animation
  $ongoing-time: $ongoing-time + ($time * $iterations);
}


//
// the mario element
.mario {
  width: $frame-w;
  height: $frame-h;
  
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/111863/mario-sprite.png);
  
  // positioning mario
  position: absolute;
  bottom: 0;
  left: 50%;
  transform-origin: 50% 100%;
  transform: translateX(-50%) translateY(-$block-sprite-di * $scale) scale($scale);
  
  animation: $frame-anims,
    y-axis $ongoing-time linear;
}


//
// create animation keyframes for each animation
@each $anim, $vals in $keyframes {
  $start: map-get($vals, start);
  $stop: map-get($vals, stop);
  @keyframes #{$anim} {
    from { background-position: ($start - 1) * -$frame-w; }
    to   { background-position: $stop * -$frame-w; }
  }
}

//
// create y axis animation
// each will always start and end at bottom
$ongoing-ratio: 0;
@keyframes y-axis {
  @each $anim, $vals in $keyframes {
    // get params
    $steps: keyframe($anim, steps);
    $iterations: keyframe($anim, iterations);
    $y: keyframe($anim, y);
    // set y to non null
    @if $y == null { $y: 0; }
    // starting % keyframe
    $start-ratio: $ongoing-ratio;
    // amount to increase by
    $stop-ratio: $steps * $iterations / $total-steps;
    // final % keyframe position
    $ongoing-ratio: $ongoing-ratio + $stop-ratio;
    // the middle % keyframe, or apex height
    $midpoint-ratio: $ongoing-ratio - ($stop-ratio / 2);
    // start: height of zero
    #{$start-ratio * 100%} { bottom: 0%; }
    #{$midpoint-ratio * 100%} { bottom: $y * $height; }
    #{$ongoing-ratio * 100%} { bottom: 0%; }
  }
}


//
// the q element
$q-loop: 6;
$q-in: $spf * 20;
$q-block-delay: 4 * $q-loop * $spf + $block-in - $q-in;
.q {
  position: absolute;
  bottom: calc(20% + #{($frame-h + $block-sprite-di) * $scale}); right: 0; left: calc(100% + #{$block-sprite-di * $scale / 2});
  width: $block-sprite-di * $scale;
  height: $block-sprite-di * $scale;
  transform: translate(-50%, 0%);
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/111863/mario-q.png);
  // 5 in sprite, first 4 loop, last is post-bump.
  background-size: $block-sprite-di * $scale * 5 $block-sprite-di * $scale;
  animation: q-frames 4 * $spf steps(4) $block-in - $q-in $q-loop,
    q-block $spf steps(1) $q-block-delay forwards,
    q-in $q-in linear $block-in - $q-in forwards;
}

@keyframes q-frames {
  from { background-position: 0 0; }
  to   { background-position: $block-sprite-di * $scale * -4 0; }
}
@keyframes q-block {
  from { background-position: 0 0; }
  to   { background-position: $block-sprite-di * $scale * -4 0; }
}
@keyframes q-in {
  from { left: calc(100% + #{$block-sprite-di * $scale / 2}); }
  to   { left: 50%; }
}



//
// the background element
.bg {
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  background: #0076ba;
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/111863/mario-ground.png);
  background-size: $block-sprite-di * $scale $block-sprite-di * $scale;
  background-repeat: repeat-x;
  background-position: 0 bottom;
  animation: ground $block-in linear forwards;
}

$ground-frames: $total-steps / 4;
$ground-decrement: -$block-sprite-di * $scale;
@keyframes ground {
  from { background-position: 0 bottom; }
  to   { background-position: $ground-decrement * $ground-frames bottom; }
}



@import url(https://fonts.googleapis.com/css?family=Press+Start+2P);

//
// the title at the end
.title {
  position: absolute;
  font-family: 'Press Start 2P', cursive;
  color: white;
  font-size: 4rem;
  text-align: center;
  bottom: calc(20% + #{($frame-h + $block-sprite-di) * $scale});
  width: 100%;
  text-shadow: 4px 4px 0px rgba(#000, 0.2);
  transform: scale(0);
  transform-origin: 50% 100%;
  animation: title 500ms steps(4) infinite,
    title-in 500ms steps(10) $q-block-delay forwards;
}

@keyframes title {
  0%, 100% { color: white; }
  50% { color: #CCC; }
}

@keyframes title-in {
  from { transform: scale(0); bottom: calc(30% + #{($frame-h + $block-sprite-di) * $scale}); }
  to   { transform: scale(1); bottom: calc(40% + #{($frame-h + $block-sprite-di) * $scale}); }
}
              
            
!

JS

              
                jakealbaughSignature('light');
              
            
!
999px

Console