javascript - Animation of the image of the WINTER BASH 2020 season

Question

WINTER BASH 2020 season is coming to an end, and I thought it would be instructive to figure out the CSS and other markup for generating the excellent logo shown here:

In the image below, the numbers indicate the desired objects for animation

Animation script:

1. Hat generator. Should move unevenly up and down

2. The question mark should float in space with a simultaneous change in size. What does the collection of information about the disclosure of the conditions for obtaining "secret hats" symbolize.

3. The balloon should wiggle evenly.

4. The small blue hat should move along the path of the word WINTER

5. Moon wiggle. Should start after completing point 4 of the scenario

6. The big blue hat moves forward in search of new hats. Some time after the start of step 6, hats should begin to fall from above.

7. Animation of stars, should start after finding all the hats.

I managed to implement the first point of the scenario.

Hat animation starts after clicking on the canvas

.container {
width:100vw;
height:100vh;
}
.s0{
    fill:none;
    stroke:#000;
}
#hat {
stroke:#000;
fill:#30BAE4;
}

<div class="container" >
<svg id="svg1" xmlns="http://www.w3.org/2000/svg"  xmlns:xlink="http://www.w3.org/1999/xlink"  viewBox="0 0 2787 768"preserveAspectRatio="xMinYMin meet" style="border:1px solid;">


<image xlink:href="https://i.stack.imgur.com/Qe1A9.jpg" height="100%" width="100%"/>
 <g id="hat" transform="translate(-1320,-180)" >
  <path d="m1299.3 183.9 46.5-16.7 2.7 6-46.7 16.7zM1308.9 180.6l-10.2-29.1 28.5-9.9 10.4 28.8" />
  <path d="m1308.9 180.6-10.2-29.1 28.5-9.9 10.4 28.8z" />
   </g>
  
    
 <g id="winterHat"  stroke="#971B59" stroke-width="2"  >
 <path fill="#2FBAE5" d="M938.7 261.2H1063.9V631.7H938.7Z" />
  <path d="M957.4 261.2V631.7" />
  <path d="M976.1 261.2V631.7" />
  <path d="M993.2 261.2V631.7" />
  <path d="M1009.4 261.2V631.7" />
  <path d="M1025.5 261.2V631.7" />
  <path d="M1045.1 261.2V631.7" />
  <path d="M1063.9 261.2V631.7" />
  

  <path id="brimHat" fill="#FCB660" d="M938.7 194.3 927.9 194.1c0 0-13.2 0.4-18.7 3.5-3.8 2.2-7.1 5.8-8.7 9.9-1.8 4.4-1 9.4-0.6 14.2 0.4 4.7 1.2 9.5 3 13.9 1.9 4.5 4.8 8.6 7.8 12.3 4 4.9 8.3 9.7 13.6 13.3 6.4 4.3 13.8 6.9 21.1 9.3 6.9 2.3 14.2 3.7 21.4 4.8 6.1 1 12.2 1.2 18.4 1.8 5.9 0.5 11.8 1.4 17.8 1.5 4.9 0.1 9.9-0.2 14.8-0.6 5.6-0.5 11.3-1.1 16.9-2.1 6.7-1.2 13.3-2.6 19.9-4.5 8.3-2.4 16.9-4.3 24.4-8.6 6.4-3.6 12.1-8.5 16.9-14 4.5-5.3 8.4-11.3 10.8-17.8 2-5.4 4-11.5 2.7-17.2-1.3-5.8-5.1-11.3-9.9-14.8-3.6-2.5-12.6-3.3-12.6-3.3l-12.9-0.6z" />
  <path id="brimHat2" fill="#971B59" d="m924.2 194.3c0 0-5.5 6.6-6.6 10.5-0.9 3.3-0.6 6.9 0 10.2 0.8 4.3 2.3 8.6 4.5 12.3 2.2 3.8 5.3 6.9 8.4 9.9 4 3.9 8.4 7.5 13.3 10.2 6.3 3.5 13.2 5.7 20.2 7.5 7 1.9 14.2 2.9 21.4 3.6 5.1 0.6 10.2 0.7 15.4 0.8 5.7 0 11.5-0.4 17.2-0.8 6.5-0.4 13.1-0.7 19.6-1.8 6.3-1.1 12.7-2.3 18.7-4.8 6.5-2.7 12.8-6.2 18.1-10.8 6-5.4 11.9-11.7 14.8-19.3 2.1-5.8 2.9-12.5 1.1-18.4-1.1-3.6-7.1-8.7-7.1-8.7z" /> 
  <path id="topHat" fill="#FCB660" d="m938.7 217.8c0 0-1.2-24.8-1.9-37.1-1.2-21.7-2.3-42.8-3.9-65-0.3-4-2.2-10.5 5.8-10.5 40 0 84.2-2.1 125.6 0.5 4.1 0.3 10.9-0.5 11.8 3.4 0.7 3-0.4 7.8-0.4 7.8l-4.2 53.6-2.9 47.1z" /> 
  <path id="bottomHat" fill="#FEFBFE"  d="m938.7 221.1 129.4 0.1-0.5 16.7c0 0-38.7 5.5-58.2 5.7-22.6 0.2-67.7-5.4-67.7-5.4z" />
  
  </g> 
  
  <path id="cloud" stroke="#971B59" stroke-width="2" fill="#FFFCFF" d="m843.3 766.3c-14.1-0.4-27.4-11.9-34.9-23.8-7-11.2-10.2-26.7-6-39.2 3.7-10.8 24.7-23.8 24.7-23.8 0 0 15.3-5.2 23-4.3 9.9 1.2 17.8 5.5 27.3 12.1 5.2 3.6 15.5 1.3 17-2.7 4.6-12.1 6.8-23 12.7-33.4 5.7-10 12.2-20.5 21.7-27.1 10.1-7 23-8.8 34.9-11.4 7.1-1.5 14.4-2.6 21.7-2.4 8.1 0.3 16.4 1.4 24 4.2 7 2.6 11.9 9.8 19.2 11.3 5.5 1.1 16.6-2.2 16.6-2.2 0 0 6-19.3 11.3-27.7 9.9-15.6 21.8-30.9 37.3-41 15.6-10.1 34.4-16.2 53-17.5 14.7-1 29.7 2.5 43.4 7.8 15.7 6.1 30.9 15.1 42.8 27.1 6.2 6.2 9 14.1 13.9 22.3 1.9 3.2 6.9-0.6 10.2 0 3.9 0.7 7.5 5.8 11.1 4.2 9.9-4.4 17.8-9.1 27.4-11.4 8.4-2.1 17.2-3 25.9-2.4 11.5 0.8 23.2 3.2 33.7 7.8 10.9 4.9 21.4 11.6 29.5 20.5 9.3 10.2 16.1 23 20.5 36.1 2.4 7.1 2.4 14.9 2.8 22.4 0.4 6.5-2.5 13.6 0 19.6 0.9 2.2 3.3 3.6 5.1 5.1 2.7 2.2 5.8 8.1 8.5 6 6.4-5.2 13.6-8.3 21.3-9.4 7.7-1 16.7-1.2 23 3.4 9.9 7.3 15.6 20.9 16.2 33.2 0.4 8.8-3.4 18.2-9.4 24.7-4.9 5.3-19.6 9.4-19.6 9.4 0 0-408 8.1-609.9 2.6z" />
            <!-- Hat animation on blue rectangles --> 
  <animateTransform id="an_BigHat" xlink:href="#winterHat" attributeName="transform" type="translate" begin="svg1.click;an_BigHat.end+3s" dur="4s" values="0,0;0,250;0,0;0,300;0,250;0,400;0,100;0,500;0,0" repeatCount="1" /> 
</svg>
</div>

question from:https://stackoverflow.com/questions/65560112/animation-of-the-image-of-the-winter-bash-2020-season

Answer 1

LIVE DEMO

The code turned out to be quite large, to place it in a snippet with a limit of 30,000 characters, I had to optimize it quite a lot and get rid of some embellishments.
Comments remained on the main points of the program, I hope they will help you understand, if there is a need, I will make an additional answer with detailed explanations of the animation elements. The animation will start after clicking the Start button

The music track sounds: Candy Dulfer / Dave Stewart - Lily Was Here

.container {
width:100vw;
height:100vh;
}
.s0{
    fill:none;
    stroke:#000;
}
#hat {
stroke:#000;
fill:#30BAE4;
}
#Stroke_bottom {
fill:#8DEBB5;
stroke:#971B59;
stroke-width:4;
stroke-dashoffset:350;
stroke-dasharray:350;
fill-opacity:0;
filter:url(#dropShadow);
}

#q {
fill:#8DEBB5;
stroke:#971B59;
stroke-width:4;
stroke-dashoffset:1366;
stroke-dasharray:1366;
fill-opacity:0;
filter:url(#dropShadow);
}
#cloud {
fill:#FFFCFF;
stroke:#971B59;
stroke-width:6;
stroke-dashoffset:1649;
stroke-dasharray:1649;
filter:url(#dropShadow);
}

<svg xmlns="http://www.w3.org/2000/svg"  xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" 
  viewBox="0 0 2787 768">

<defs>
         <!-- Trail running along the word "Winter" of the little blue hat -->
 <path id="trace" stroke="none" d="m1115 163 46 98 25-52 26 53 46-97 25 1v97h33l1-97 81 99v-99l57 1 1 98 3-1-1-98h37 22v98l61 1 1-3-58-2v-46l55 1v-5h-54v-41l79-4v99h4l-1-40 27-1 22 41 4-1-21-40c0 0 10-4 14-8 4-3 7-7 9-12 2-6 3-13 1-19-2-6-6-10-11-14-4-3-9-4-14-5-10-2-31-1-31-1" />
 <filter id="dropShadow">
      <feDropShadow dx="4" dy="4" stdDeviation="16" result="shadow"/>
       <feComposite in2="mask" in="shadow" operator="in" result="comp" />
      <feMerge result="merge">
        <feMergeNode in="SourceGraphic" />
        <feMergeNode in="comp" />
      </feMerge> 
    </filter>  
    
    <filter id="shadow" x="-10%" y="-10%" width="200%" height="200%">
        <feOffset result="offsetResult" in="SourceAlpha" dx="2" dy="2" />
        <feGaussianBlur result="blurResult" in="offsetResult" stdDeviation="4" />
        <feBlend in="SourceGraphic" in2="blurResult" mode="normal" />
    </filter>  
    <mask id="msk" >
        <!-- Stars in the background     --> 
        <rect width="100%" height="100%" fill="white" />    
        <path d="m280 446c0 0-1 7-3 11-1 3-3 6-6 8-3 2-6 3-9 4-2 1-6 3-6 3 0 0 4 1 6 2 3 1 5 1 8 3 2 2 4 4 6 6 1 2 2 5 3 7 1 2 2 7 2 7 0 0 1-5 2-8 1-3 2-6 4-8 2-2 5-4 7-5 4-2 14-4 14-4 0 0-5-1-8-2-3-1-5-2-8-4-3-2-5-5-6-8-2-4-2-5-4-12zM166 315" />
  
  <path d="m166 315c0 0-1 5-3 8-1 2-2 5-4 6-3 2-10 4-10 4 0 0 5 1 8 3 2 1 4 2 5 4 1 2 3 3 3 5 1 2 1 5 1 5 0 0 1-5 2-7 1-2 2-3 3-4 1-1 3-2 5-3 2-1 7-2 7-2 0 0-3-1-5-2-2-1-4-1-6-3-2-2-3-4-4-6-1-2-3-7-3-7z" />
  
  <path d="m1715 288c-2 5-3 9-5 12-2 4-5 7-8 10-3 2-7 3-11 4-3 1-8 2-8 2 0 0 6 1 9 2 4 1 8 2 11 5 3 2 6 6 8 9 3 5 5 15 5 15 0 0 2-11 5-15 2-3 5-6 8-8 3-2 7-3 11-5 2-1 7-2 7-2 0 0-5-2-8-3-3-1-6-1-9-3-3-2-6-5-8-8-3-4-3-9-6-14z" />
  <path d="m1557 61c0 0-1 4-2 6-1 2-2 3-3 4-2 2-4 2-6 3-1 1-4 1-4 1 0 0 4 2 6 3 2 1 3 2 5 4 1 2 2 3 3 5 1 1 2 4 2 4 0 0 1-4 2-5 1-2 2-3 4-5 2-1 4-2 5-3 1-1 4-2 4-2 0 0-3-1-5-2-2-1-4-2-5-4-1-1-2-3-3-5-1-1-2-4-2-4z" />
  <path d="m2380 375c0 0-2 7-3 10-1 4-3 7-5 10-2 3-6 4-9 6-3 2-10 3-10 3 0 0 6 2 9 3 4 2 8 3 11 6 3 3 4 8 6 12 1 3 2 8 2 8 0 0 2-6 3-9 1-3 3-7 5-10 2-3 5-5 9-6 4-2 12-4 12-4 0 0-6-2-8-3-2-1-5-2-7-3-2-1-4-3-6-6-2-2-2-5-3-7-1-3-4-10-4-10z" />
  <path d="m2473 233c0 0-1 4-3 6-1 2-2 3-4 5-2 2-3 3-5 4-1 1-4 1-4 1 0 0 4 2 6 3 2 1 4 2 5 4 1 2 2 4 3 6 1 2 2 5 2 5 0 0 1-4 2-6 1-2 2-4 3-5 1-1 3-2 4-3 2-1 7-3 7-3 0 0-5-2-8-3-2-1-3-2-4-4-1-1-1-3-2-5 0-1-1-3-1-3z" />
  <path d="m2269 59c0 0-2 1-3 2-2 1-3 3-5 4-2 1-5 1-7 1-2 0-6 0-6 0 0 0 3 3 5 5 1 2 2 3 2 5 1 3 0 5 0 8 0 1 0 3 0 3 0 0 4-3 6-5 1-1 3-2 4-2 2 0 4 0 6 0 2 0 6 1 6 1 0 0-3-3-4-4-1-2-3-3-4-6-1-2 0-4 0-6 0-2 1-5 1-5z" />
  <path d="m1477 596c0 0-1 3-2 5-1 2-2 4-3 5-2 2-5 3-8 5-1 1-4 1-4 1 0 0 4 1 5 1 2 1 4 2 6 3 2 2 3 4 4 7 1 2 2 5 2 5 0 0 1-4 2-6 1-2 2-3 4-5 1-1 3-2 5-3 2-1 5-2 5-2 0 0-3-2-5-3-2-1-3-2-5-3-2-2-3-4-4-6-1-1-2-4-2-4z" />
   <path  d="m830 136c0 0-1 8-2 11-1 2-2 4-4 5-1 1-3 2-4 3-2 1-6 2-6 2 0 0 4 2 6 3 2 1 4 2 5 4 1 1 2 3 3 5 1 2 2 6 2 6 0 0 1-5 2-7 1-1 2-3 3-4 2-1 4-2 5-3 2-1 6-3 6-3 0 0-4-1-6-2-2-1-3-2-4-3-1-1-2-3-3-4-1-3-2-11-2-11" />    
        </mask>
     <radialGradient id="grad_bl" cx="20%" cy="20%" r="30%" fx="30%" fy="30%">
   <stop stop-color="white" offset="20%"/>
   <stop stop-color="#31BCE5" offset="90%"/>
 </radialGradient>   
</defs>   
    <!-- Bottom background -->
<rect width="100%" height="100%" fill="yellow" >
      <!-- Animation of stars twinkling through the mask -->
  <animate id="back" attributeName="fill" begin="btn1.click+80s;back.end+5s" dur="1s" values="red;yellow;cyan" fill="freeze"    repeatcount="10" />
  </rect>
  
<image xlink:href="https://i.stack.imgur.com/gNAr3.jpg" mask="url(#msk)" height="100%" width="100%"/>    
                     
   <!-- Moon -->
 <g id="moon" stroke="#971B59" stroke-width="2" filter="url(#shadow)" transform="rotate(30,1750,10.4)">
  <path fill="#8BECBD" d="m1729 45 28-35 36 31-28 33zM1717 37l58 48-5 8-57-49M1717 37l58 48-5 8-57-49" />
  <path fill="#8BECBD" d="m1717 37 58 48-5 8-57-49z" />
  <path fill="#FFFBFF" d="m1724 54c0 0-11 15-15 23-4 9-7 19-8 30-1 10 0 21 3 31 2 9 6 18 11 25 5 7 10 13 17 18 8 6 16 11 25 15 11 4 23 6 34 5 9 0 19-3 27-6 5-2 11-4 15-7 6-4 11-8 16-13 2-2 5-7 5-7l-15 3-17 0-20-5-14-7-14-13-10-15-3-6c0 0 3-1 4-1 1-1 2-2 3-3 1-2 1-4 0-6 0-1-2-1-2-2-1-1-3-2-4-4-1-1-2-2-3-4-1-2-2-4-3-6 0-4 2-13 2-13z" />
  <path d="m1746 128c0 0 6 6 9 7 4 1 12 0 12 0" />
  <path d="m1745 96c2 0 4 1 4 2 1 1 1 3 0 4-1 1-2 2-3 2-1 0-3-1-4-2-1-1-1-2 0-4 1-1 2-2 3-2z" /> 
         <!-- Moon animation  an_hat.end-->
    <animateTransform id="an_Moon" attributeName="transform" type="rotate" begin="an_hat.end" dur="6s" values="30,1750,10.4;
                10,1750,10.4;
                20,1750,10.4; 
                -30,1750,10.4;
                0,1750,10.4;
                30,1750,10.4"
                keyTimes="0;0.15;0.25;0.45;0.85;1"
                repeatCount="indefinite" 
                    />   
                    
  </g>  
    <!-- Hat on the far right with a spring  -->
 <g  stroke="#971B59" stroke-width="2" filter="url(#shadow)" >
 <path fill="#971B59" d="m2648 190c0 0 35 19 52 30 22 14 63 45 63 45l-37 61-22 36-49-35-34-20-34-19zM2588 287l68 40 49 36-13 20-115-74" />
  <path fill="#FFFBFF" d="m2588 287 68 40 49 36-13 20-115-74z" />
  <path fill="#31BCE5" d="m2537 290c1-1 3-1 4 0 8 4 15 7 22 11 9 5 18 11 27 16 15 9 29 18 44 27 20 13 39 26 58 39 5 4 11 7 16 11 5 3 9 6 14 10 1 1 4 2 4 4 0 3-1 7-4 7-2 1-3-1-4-2-5-3-10-8-15-12-12-9-25-17-37-26-15-10-46-27-46-29 0-1-27-18-41-27-9-5-18-10-27-16-4-2-8-4-11-6-2-1-4-2-4-5 0-2 2-3 3-4z"/>
  <path fill="#911A5B" d="m2533 294-2 4 12 11 18 13 26 18 20 14 21 13 19 12 27 17 17 9 10 6 10 5 8-1-9-6-10-8-15-11-13-9-32-21-27-15-33-22-9-5-15-8-14-8z" /> 
      <!-- Hat animation on the far right -->
    <animateTransform id="Hat_right" attributeName="transform" type="translate" begin="btn1.click;Hat_right.end+2s" dur="1.0s" values="0,0;-60,180;0,0" repeatCount="2" keyTimes="0;0.7;1" />  
  </g>
          <!-- Question mark -->
  <path id="q"  d="m560 343c-5-16-3-35 2-51 4-16 14-30 24-42 10-12 23-22 37-30 14-8 30-13 45-16 17-3 35-4 53-2 19 2 38 5 55 12 18 8 35 18 48 33 15 17 27 37 32 58 6 27 4 55-4 81-6 18-18 33-30 48-10 12-25 21-36 32-11 11-25 21-33 35-4 7-6 16-8 24-2 9 0 20-5 28-5 9-13 17-23 21-10 4-22 4-32 1-9-3-17-9-23-17-5-8-7-18-8-28-1-14 0-29 4-43 3-11 8-21 14-30 6-9 14-16 21-23 10-10 22-19 32-28 10-9 23-17 30-29 5-7 8-15 9-23 2-10 2-20-2-29-3-9-9-19-17-25-9-7-21-10-32-11-11-1-22 1-32 5-8 4-17 9-22 16-5 6-5 15-7 22-2 7-4 15-8 22-4 6-8 13-15 16-8 4-19 4-28 4-8-1-17-2-24-7-7-5-12-12-14-20z" >
     <animate id="q_Stroke" attributeName="stroke-dashoffset" begin="btn1.click;q_scale.end+4s" dur="4s" values="1366;0" fill="freeze" /> 
       <animate id="q_Fill" attributeName="fill-opacity" begin="q_Stroke.end" dur="4s" values="0;0.5;1" fill="freeze" /> 
        <animateTransform id="q_move" attributeName="transform" type="translate" begin="q_Fill.end" dur="8s" values="0 0;0 -100;-200 -100;0 0" repeatCount="1" additive="sum"  />  
           <animateTransform id="q_scale" attributeName="transform" type="scale" begin="q_Fill.end" dur="8s" values="1,;0.75;0.75;1;1" repeatCount="1" additive="sum"  />   
  </path>
                  <!-- Question mark tail -->
  <path fill="#8DEBB5" stroke="#971B59" stroke-width="2" d="m696 575c-3 1-5 3-7 5-1 1-2 2-2 3 0 1 1 3 2 4 1 1 3 0 4 0 1 0 1 0 2 0 1 1 1 2 1 3 1 1 2 1 3 0 1 0 1-1 2-2 0 0 0-1 1-1 1 0 2 2 3 2 1 0 3-1 4-2 1-1 0-3 0-4-1-2-2-3-4-4-1-1-2-2-3-2-1-1-3-1-4-1z" />
                   <!-- Bottom question ball -->
<path id="Stroke_bottom"   d="m691 709c0 2-3 3-4 4-1 1-2 2-3 4-1 1-1 2-1 4 0 1 1 3 2 4 1 1 3-2 4-1 1 0 1 2 2 3 1 0 2 0 3 0 1-1 1-2 2-3 1 0 3 2 4 1 1 0 2-2 2-3 0-2-2-3-3-5-1-1-2-2-3-3-1-1-3-1-3-2 0-4 6-6 9-9 3-3 6-6 9-9 4-5 9-9 13-14 3-4 6-8 8-13 2-5 4-11 3-16 0-6-2-11-4-17-2-5-4-9-8-13-4-4-9-7-14-10-4-2-9-3-14-4-3 0-7 0-10 0-5 1-10 2-14 3-4 2-9 5-12 8-5 5-9 10-11 17-2 7-3 14-2 21 1 5 3 9 5 13 2 4 5 8 8 12 3 4 6 7 9 11 3 4 7 7 10 10 2 2 4 3 6 5 2 2 5 2 5 5z" >
     <animate id="an_Stroke_bottom" attributeName="stroke-dashoffset" begin="btn1.click+1s;q_scale.end+4s" dur="4s" values="350;0" fill="freeze" /> 
       <animate id="q_Fill" attributeName="fill-opacity" begin="q_Stroke.end" dur="4s" values="0;0.5;1" fill="freeze" />       

       <animateTransform id="Stroke_bottom_move" attributeName="transform" type="translate" begin="q_Fill.end" dur="8s" values="0 0;0 -100;-200 -100;0 0" repeatCount="1" additive="sum"  />  
           <animateTransform id="Stroke_bottom_scale" attributeName="transform" type="scale" begin="q_Fill.end" dur="8s" values="1,;0.75;0.75;1;1" repeatCount="1" additive="sum"  />   
    </path> 

              <!-- Blue balloon  -->
 <g id="AirBall" transform="rotate(-15 536 395.8)">
 <path fill="url(#grad_bl)" stroke="#2A9EC1" stroke-width="4" filter="url(#dropShadow)" d="m360 167c11-8 24-13 37-13 13 0 27 4 38 11 13 8 24 20 30 34 8 16 7 34 9 52 1 13 2 27 1 40 0 6 2 13-2 16-3 3-8 1-13 1-8 0-17-1-25-3-11-2-22-4-33-8-11-3-23-6-32-12-9-5-17-13-23-21-6-9-12-20-13-31-2-12-1-25 4-36 5-11 13-22 24-29z" />
                <!-- Ball tail -->
 <path fill="#FFFBFF" stroke="#971B59" stroke-width="4" d="m474 305c2-1 4 0 6 0 2 0 5 0 7 2 1 1 1 3 1 4 0 1 0 3-1 3-1 1-4-1-4 1-1 1 1 3 0 4 0 1-1 3-2 3-2 1-3-3-5-2-1 1 0 3-1 4-1 1-2 2-3 2-2 0-4-2-4-4-1-2 0-5 0-8 0-1 0-3 1-4 1-2 4-3 6-4z" /> 
  
             <!-- Ball rope -->