Vue3 + CSS实现一个喷火龙动画效果

.bg{
  width: 3900px;
  height: 100vh;
  background-color: #348cb2;
  background-image: url('https://p1-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/147d616a42d346289a5756959117d8b0~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1500&h=500&s=238027&e=jpg&b=348cb2');
  background-position: 0 100%;
  background-repeat: repeat-x;
  background-size: 1300px auto;
}

.bg{
  animation: bg 60s linear infinite;
}
@keyframes bg {
  from {
    transform: translate3d(-1300px,0,0)
  }
  to {
    transform: translate3d(0,0,0)
  }
}

<div class="fire-box" v-show="showFire">
  <div class="fire">
    <div v-for="(num, i) in 200" :key="i" class="ball"></div>
  </div>
</div>
​
​
<style>
$count: 200;
​
@for $i from 1 to $count {
  .ball:nth-child(#{$i}) {
    $width: #{random(50)}px;
    width: $width;
    height: $width;
    left: calc(#{(random(70))}px - 55px);
  }
  .ball:nth-child(#{$i}) {
    animation: movetop 1s linear -#{random(3000)/1000}s infinite;
  }
}
​
@keyframes movetop {
  0% {
    transform: translate(0, 0);
  }
  20% {
    transform: translate(0, 0);
  }
  87.7% {
    transform: translate(0, -170px);
    opacity: 0;
  }
  100% {
    transform: translate(0, -170px);
    opacity: 0;
  }
}
    
​
.fire-box {
  width: 100px;
  height: 300px;
  position: absolute;
  bottom: 200px;
  left: 50%;
  margin-left: -290px;
  transform: rotate(-90deg);
  filter: blur(2px) contrast(20);
  .fire {
    position: absolute;
    top: 30px;
    left: 50%;
    border-radius: 45%;
    box-sizing: border-box;
    border: 120px solid transparent;
    border-bottom: 120px solid transparent;
    transform: translate(-50%, 0) scaleX(.45);
    .ball {
      position: absolute;
      top: 60px;
      transform: translate(0, 0);
      background: #fa8763;
      border-radius: 50%;
      z-index: -1;
      mix-blend-mode: screen;
    }
  }
}
</style>

<img
  src="https://p1-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/15b3cb91006646df931927699603ec09~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=688&h=722&s=378680&e=png&a=1&b=5d8017"
  alt=""
  class="dragon"
  @mouseover="handleShowFire"
/>
​
<style>
.dragon{
  width: 250px;
  height: 250px;
  position: fixed;
  bottom: 200px;
  left: 50%;
  margin-left: -125px;
}
</style>

<img
  src="https://p1-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/15b3cb91006646df931927699603ec09~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=688&h=722&s=378680&e=png&a=1&b=5d8017"
  alt=""
  class="dragon"
  :class="[{'shake': showFire}]"
  @mouseover="handleShowFire"
/>
<div class="tips" v-show="showFire">
  <div class="txt">{{tips}}</div>
</div>
​
<script>
const showFire = ref(false)
const duration = 3000
let timer = null
​
const handleShowFire = () => {
  showFire.value = true
  if(showFire.value) {
    if(timer) {
      clearTimeout(timer)
    }
    timer = setTimeout(() => {
      showFire.value = false
    }, duration)
  }
}
</script>

.shake{
  animation: shake 1s infinite;
}
​
@keyframes shake {
  0% { transform: translateX(0); }
  25% { transform: translateX(-10px) rotateY(3deg); }
  75% { transform: translateX(10px) rotateY(-3deg); }
  100% { transform: translateX(0); }
}
​
.tips{
    background: url('https://p9-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/4c2cc65b824c48edb2530bc1d993f796~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=233&h=154&s=9297&e=png&a=1&b=fafafa') center / cover no-repeat;
    width: 130px;
    height: 65px;
    position: absolute;
    bottom: 450px;
    left: 50%;
    margin-left: -50px;
    user-select: none;
    animation: zoom 1s infinite;
    .txt{
      position: absolute;
      top: 18px;
      left: 15px;
      white-space: nowrap;
      color: #f00;
      font-weight: 600;
      font-size: 12px;
    }
  }
​
  @keyframes zoom {
    0% {
      transform: scale(1);
    }
    50% {
      transform: scale(0.9);
    }
    100% {
      transform: scale(1);
    }
  }
}