CSS paper boat sailing in the rain

CSS paper boat sailing in the rain.markdown

CSS paper boat sailing in the rain

Raining on the lake... full css paper boat, ripples, splashes, and drops. JS is only used to duplicate the ripples, remove them after a while and to handle the mouse down event. I'm new in css, any optimization is welcome.

index.html

#bgr
#lake
  #sploutch
    .drop
    #ripples
      - (1..2).each do |i|
        .ripple
    #splashes
      - (1..3).each do |i|
        .splash
#raftHolder
  #raft
    #raftTop
    #raftBottom
#raftRipples
  - (1..2).each do |i|
    .raftRipple
#raftReflection
  - (1..3).each do |i|
    .raftReflectionSegment
#instructions Click somewhere<br/>to add ripples
#forest
  - (1..3).each do |i|
    .tree

script.js

var HEIGHT,WIDTH;
var lake = document.getElementById("lake");
window.addEventListener('resize', handleResize, false);
handleResize();

function handleResize(){
  HEIGHT = window.innerHeight,
  WIDTH = window.innerWidth;
}

onmousedown = function(event){
  createRipples(event.pageX, event.pageY);
}

function createRipples(x,y){
  var tx = x || Math.random()*WIDTH;
  var ty = y || (Math.random()+.5)*HEIGHT*.5;
  var spltch = document.getElementById("sploutch");
  var cln = spltch.cloneNode(true);
  cln.style.left=(tx-150) +"px";
  cln.style.top=(ty-150) +"px";
  lake.appendChild(cln);
  // remove it from the dom after a while
  setTimeout(function(){
    lake.removeChild(cln);
  }, 4000);
}

setInterval(createRipples, 300);

style.css

@import url(http://fonts.googleapis.com/css?family=Open+Sans:800);

$n:3;
$d:1s;

body {
  background:#000;
  overflow:hidden;
}

#instructions{
  position:absolute;
  width:100%;
  top:50%;
  margin: auto;
  margin-top:80px;
  font-family:'Open Sans', sans-serif;
  color:#AAA;
  font-size:1.1em;
  text-transform: uppercase;
  text-align : center;
  line-height:130%;
}

#bgr{
  position:absolute;
  margin:auto;
  top:0;
  bottom:0;
  
  width:100%;
  height:100%;
  background: linear-gradient(#000,#111,#222,#000);
  
// Raft 
}
#raftHolder{
  position:absolute;
  margin:auto;
  top:0;
  bottom:0;
  left:0;
  right:0;
  //background:#f00;
  width:100px;
  height:50px;
  overflow:hidden;
}
#raft{
  position:absolute;
  margin:auto;
  top:0;
  bottom:0;
  left:0;
  right:0;
  transform:rotate(-5deg);
  animation-name:raftFloat;
  animation-duration:1s;
  animation-iteration-count:infinite;
  animation-direction: alternate;
  animation-timing-function: ease-in-out;
}
#raftBottom{
  position:absolute;
  margin:auto;
  top:34px;
  bottom:0;
  left:0;
  right:0;
  width:0px;
  height:0px;
  border-bottom: 20px solid #555;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  
  &::before{
    content:"";
    position:absolute;
    margin:auto;
    width:0px;
    height:0px;
    left:-40px;
    border-top: 20px solid #2A2A2A;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
  }
  &::after{
    content:"";
    position:absolute;
    margin:auto;
    width:0px;
    height:0px;
    border-top: 20px solid #888;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
  }
}

#raftTop{
  position:absolute;
  margin:auto;
  top:-7px;
  left:20px;
  right:0;
  bottom:0;
  width:0px;
  height:0px;
  border-bottom: 20px solid #fff;
  border-right: 20px solid transparent;
  &::before{
    content:"";
    position:absolute;
    margin:auto;
    width:0px;
    height:0px;
    left:-20px;
    border-bottom: 20px solid #333;
    border-left: 20px solid transparent;
  }
}

#raftRipples{
  position:absolute;
  margin:auto;
  top:50px;
  bottom:0;
  left:0;
  right:100px;
  width:200px;
  height:50px;
  //border :1px solid #f00;
}
.raftRipple{
  position:absolute;
  margin:auto;
  width:0px;
  height:4px;
  border-radius:2px;
  opacity:.1;
  background:#fff;
  animation-name:raftRippleMove;
  animation-duration:1.5s;
  animation-iteration-count:infinite;
  animation-timing-function: ease-in-out;
  
  &:nth-child(1) {
    top:30px;
    left:120px;
    animation-delay:1s;
  }
  &:nth-child(2) {
    top:24px;
    left:120px;
    animation-delay:1.5s;
  }
}

#raftReflection{
  position:absolute;
  margin:auto;
  top:90px;
  bottom:0;
  right:0;
  left:10px;
  width:100px;
  height:50px;
  //border:1px solid #f00;
}

.raftReflectionSegment{
  position:absolute;
  margin:auto;
  height:4px;
  border-radius:2px;
  bottom:0;
  left:0;
  right:0;
  background:#fff;
  animation-name:raftReflectionMove;
  animation-duration:1s;
  animation-iteration-count:infinite;
  animation-direction: alternate;
  animation-timing-function: ease-in-out;
  
  &:nth-child(1) {
    top:-30px;
    width:35px;
    opacity:.1;
  }
  &:nth-child(2) {
    top:-16px;
    width:45px;
    animation-delay:.2s;
    opacity:.05;
  }
  &:nth-child(3) {
    top:-2px;
    width:60px;
    animation-delay:.4s;
    opacity:.02;
  }
}

@keyframes raftReflectionMove{
  0%{
    transform:scale(1.2,1) translate(5px);
  }
  
  100%{
    transform:scale(1,1) translate(-10px);
  }
}

@keyframes raftRippleMove{
  0%{
    width:0px;
  }
  70%{
    width:50px;
  }
  100%{
    transform:translate(-100px);
    width:0px;
    opacity:0;
  }
}

@keyframes raftFloat{
  0%{
    transform:rotate(3deg) translate(10px,-2px);
  }
  100%{
    transform:rotate(-3deg) translate(-5px);
  }
}

#sploutch{
  position:absolute;
  width:300px;
  height:300px;
  animation-name: panSploutch;
  animation-duration:6s;
}

@keyframes panSploutch{
  to {
    transform: translateX(-300px);
  }  
}


// DROPS

.drop{
  position:absolute;
  background:#fff;
  width: 2px;
  height: 40px;
  opacity:0;
  left:150px;
  animation-name: fall;
  animation-duration:.2s;
  animation-timing-function: ease-in;
  animation-fill-mode: forwards;
}

@keyframes fall{
  0%{
    top:-100px;
    opacity:0;
    height:100px
  }
  99%{
    opacity:1;
  }
  100% {
    top:150px;
    opacity:0s;
    height:5px;
  }
}

// RIPPLES

#ripples{
  position:absolute;
  width:300px;
  height:300px;
  transform: rotateX(75deg);
}


.ripple {
  position:absolute;
  margin:auto;
  //background : #000;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 1px;
  height:1px;
  opacity:0;
  border-radius:50%;
  border-style:solid;
  border-width:6px;
  border-color: rgba(255,255,255,.2);
  animation-name: grow;
  animation-iteration-count: 1;
  animation-fill-mode: forwards;
  animation-timing-function: ease-in-out;
  
   @for $i from 0 to $n {
    $delay:($i)*.3*$d;
		&:nth-child(#{$i+1}) {
      animation-delay: $delay;
      animation-duration: 2s;
    }
  }
}

@keyframes grow {
    0% {
      width: 1px;
      height:1px;
      opacity: 0;
      transform : translateY(20px);
    }
    25%{
      opacity:.5;
      transform : translateY(-10px);
    }
    50%{
      transform : translateY(10px);
    }
    
    100% {
      width: 250px;
      height:250px;
      opacity:0;
      transform : translateY(0px);
    }
}

// SPLASHES

.splash{
  position:absolute;
  margin:auto;
  width: 4px;
  height:4px;
  border-radius:2px;
  opacity:0;
  background : #fff;
  
  animation-iteration-count: 1;
  animation-fill-mode: forwards;
  animation-timing-function: ease-in-out;
  animation-duration:1s;
    @for $i from 1 to $n+1 {
      &:nth-child(#{$i}) {
        animation-name: bounce+$i;
        animation-delay:$i*.1s;
      }
    }  
}

@for $i from 1 to $n+1 {
  @keyframes #{bounce+$i} {
    0%{
      left:150px;
      top:150px;
      opacity:0;
    }
    5%{
      opacity:.5;
    }
    50%{
      top:100+random(40)+px;
    }
    100%{
      left:120 + random(80) + px;
      top:150px;
      opacity:0;
    }
  }
}

#forest{
  position:absolute;
  margin:auto;
  width:100%;
  height:100%;
  left:100vw;
  animation-name:panForest;
  animation-duration:12s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  
}

@keyframes panForest{
  to{
    transform:translateX(-300vw);
  }
}

.tree{
  position:absolute;
  background:#000;
  height:120%;
  @for $i from 1 to $n+1 {
    &:nth-child(#{$i}) {
      $rot:-5 + random(10);
      width: 50 + random(50) + px;
      transform: rotateZ($rot+deg);
      left:$i*(100 + random(150))+px;
    }
  }
  
}