claw machine

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HTML

<body>
  <div class="wrapper">
    <div class="collection-box pix"></div>
    <div class="claw-machine">
      <div class="box pix">
        <div class="machine-top pix">
          <div class="arm-joint pix">
            <div class="arm pix">
              <div class="claws pix"></div>
            </div>
          </div>
          <div class="rail vert pix"></div>
          <div class="rail hori pix"></div>
        </div>
        <div class="machine-bottom pix">
          <div class="collection-point pix"></div>
        </div>
      </div>
      <div class="control pix">
        <div class="cover left"></div>
        <button class="hori-btn pix"></button>
        <button class="vert-btn pix"></button>
        <div class="cover right">
          <div class="instruction pix"></div>
        </div>
        <div class="cover bottom"></div>
        <div class="cover top">
          <div class="collection-arrow pix"></div>
        </div>
        <div class="collection-point pix"></div>
      </div>
    </div>
  </div>
  <div class="sign">
    by masahito / <a href="http://www.ma5a.com/">ma5a.com</a>
  </div>
</body>

CSS

*,
::before,
::after {
  box-sizing: border-box;
}

body {
  padding: 0;
  margin: 0;
  font-family: sans-serif;
  background-color: #84dfe2;
  --brown: #57280f;
  --blue: #33a5da;
  --dark-blue: #3a94b7;
  --machine-color: #32c2db;
  --machine-width: 160px;
  --m: 2;
}

.wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  min-height: 600px;
  flex-direction: column;
}

.pix,
.pix::before,
.pix::after {
  width: calc(var(--w) * var(--m));
  height: calc(var(--h) * var(--m));
  image-rendering: pixelated;
  background-size: calc(var(--w) * var(--m)) calc(var(--h) * var(--m));
}

.pix::before,
.pix::after {
  position: absolute;
  content: '';
}

.claw-machine {
  display: flex;
  flex-direction: column;
  border: 2px solid var(--brown);
  overflow: hidden;
}

.collection-box {
  --h: 32px;
  width: calc(var(--m) * var(--machine-width));
  margin: calc(var(--m) * var(--h) * -1 - 10px) 0 24px;
  display: flex;
  align-items: bottom;
  justify-content: start;
}

.collection-box .toy-wrapper {
  position: relative;
  width: calc(100% / 6);
  display: flex;
  align-items: end;
  justify-content: center;
}

.collection-box .toy-wrapper .toy::after {
  top: auto;
  bottom: 0;
}

.toy-wrapper.squeeze-in {
  width: 0;
  animation: squeeze-in forwards 0.4s;
  animation-delay: 1.4s;
}

@keyframes squeeze-in {
  0% {
    width: 0;
  }
  100% {
    width: calc(100% / 6);
  }
}

@keyframes show-toy-2 {
  0% {
    opacity: 0;
    transform: translateY(-100vh);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.toy-wrapper .toy {
  opacity: 0;
  transform: translateY(-100vh);
  animation: forwards show-toy-2 0.8s;
  animation-delay: 1s;
}

.claw-machine.show-overlay::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  background-color: var(--machine-color);
  opacity: 0.6;
  z-index: 6;
  pointer-events: none;
}

.box {
  position: relative;
  background-color: #7fcfed;
  --w: var(--machine-width);
  --h: 180px;
}

.box::before {
  background-color: var(--brown);
  top: calc(70px * var(--m));
  width: 100%;
  height: calc(var(--m) * 8px);
  z-index: 5;
}

.box::after {
  background-color: var(--machine-color);
  top: calc(70px * var(--m));
  right: 0px;
  width: calc(var(--m) * 8px);
  height: calc(var(--m) * 170px);
  z-index: 2;
}

.machine-top,
.machine-bottom {
  position: absolute;
  width: 100%;
  --h: 70px;
  height: calc(var(--h) * var(--m));
}

.machine-top {
  top: 0;
  display: flex;
  align-items: center;
  z-index: 1;
}

.machine-top::after {
  content: '';
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #70f7f372;
  z-index: 1;
}

.machine-bottom {
  bottom: 0;
  background-color: #def7f6;
}

.collection-point {
  position: absolute;
  bottom: 0;
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABYAAAAMCAYAAABm+U3GAAAAAXNSR0IArs4c6QAAADBJREFUOE9jtJqy/T8DFcGxHE9GkHGM1DYYZCjIcJoYTDMXjxqMkrZGIw8eHEMvKADnSiE1EAXSagAAAABJRU5ErkJggg==);
  --w: 44px;
  --h: 24px;
  z-index: 0;
}

.rail {
  top: 0;
  left: 0;
  transition: 0.3s;
  border: solid var(--blue);
}

.rail.hori {
  --h: 5px;
  width: 100%;
  background-color: #fff;
  border-width: 2px 0;
  z-index: 1;
}

.rail.vert {
  position: absolute;
  --h: 70px;
  --w: 5px;
  background-color: #fff;
  border-width: 0 2px;
}

.arm-joint {
  position: absolute;
  top: 0;
  left: 0;
  --w: 5px;
  --h: 5px;
  transition: 0.3s;
  z-index: -1;
}

.arm-joint::after {
  position: absolute;
  border: solid var(--blue) 2px;
  background-color: #fff;
  --w: 10px;
  --h: 10px;
  top: calc(var(--m) * var(--h) * -0.25);
  left: calc(var(--m) * var(--w) * -0.25);
}

.arm::after {
  position: absolute;
  --w: 13px;
  --h: 7px;
  bottom: calc(var(--m) * -1px);
  left: calc(var(--m) * -3px);
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAAHCAYAAADTcMcaAAAAAXNSR0IArs4c6QAAAElJREFUKFNjZGBgYDBeeus/iCYGnI1WY2QEaTgTpUqMerAak2W3GVA0RWgKMKy4/gHDAGRx6miCWQEyGQbQbcawiRiPgTWRE3oA5mIzfZr3jVYAAAAASUVORK5CYII=);
}

.arm.missed::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAAHCAYAAADTcMcaAAAAAXNSR0IArs4c6QAAAENJREFUKFNjZGBgYDBeeus/iCYGnI1WY2QEaTgTpUqMerAak2W3GSjTFKEpADZpxfUPGLYiy+G0CaYImyHkO4+c0AMAWBctfQPWfVQAAAAASUVORK5CYII=);
}

.control {
  position: relative;
  --h: 60px;
  width: 100%;
  text-align: right;
  background-color: var(--dark-blue);
}

.cover {
  position: absolute;
  background-color: var(--machine-color);
  --top-size: calc(var(--m) * 20px);
  --bottom-size: calc(var(--m) * 10px);
  z-index: 4;
}

.top {
  top: 0;
  width: 100%;
  height: calc(var(--m) * 16px);
}

.collection-arrow {
  position: absolute;
  left: calc(var(--m) * 21px);
  top: calc(var(--m) * 9px);
  --w: 8px;
  --h: 4px;
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAECAYAAACzzX7wAAAAAXNSR0IArs4c6QAAAClJREFUGFdjDDn86T8DHsAIksOlaI0tHyNYATZFIEmQOFwBsiKYJEgMAPTvDw1xBcM+AAAAAElFTkSuQmCC);
  filter: sepia(1) brightness(0.5);
}

.bottom {
  bottom: 0px;
  width: 100%;
  height: calc(var(--m) * 8px);
  background-color: var(--brown);
}

.left {
  bottom: 0px;
  left: 0px;
  height: calc(var(--m) * 170px);
  width: calc(var(--m) * 8px);
}

.right {
  top: 0;
  right: 0px;
  height: 100%;
  width: calc(var(--m) * 116px);
}

.instruction {
  position: absolute;
  --w: 51px;
  --h: 12px;
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADMAAAAMCAYAAADPjYVSAAAAAXNSR0IArs4c6QAAAPRJREFUSEvdVkESwkAIs0d9hv9/k8/Qow4d6aSZBKjjRfdSdltYIBC63B735+m9rufLkvuQ4/joHnVCRjsp531hG89w7+S0r3xdnc8X1RONOGfynL/lO1A/A8akOZ/4Xk7GhoQy6pBx2fwkmKOJZMQQ/Q0ZFzVHP0VIlUlVVlw+GKR6p/wYBTNFzSGjLu6SMk3iDhl04NfllbH+ZZUEUDWbqn9XjkgkWBaqlJh0eHQopkwwLDU7eu0a1fWHs9eRQqeHNF4OSYfMNFvVkHSzZ0oMqP9VZBytcy9O6JptTZGJ72SZqdrvJjT3Au6VgxVds+70t+cFkvdjifIP/BkAAAAASUVORK5CYII=);
  top: calc(var(--m) * 34px);
  right: calc(var(--m) * 11px);
}

.arm {
  position: absolute;
  --w: 7px;
  --h: 28px;
  background-color: #fff;
  box-shadow: 0 0 0 2px var(--blue);
  transition: 0.3s;
  margin-top: calc(var(--m) * -1px);
  margin-left: calc(var(--m) * -1px);
}

.claws {
  position: absolute;
  --w: 3px;
  --h: 10px;
  bottom: calc(var(--m) * -5px);
  left: calc(var(--m) * 2.5px);
}

.claws::before,
.claws::after {
  top: 0;
  --w: 10px;
  --h: 16px;
  transition: 0.2s;
}

.claws::before {
  left: calc(var(--m) * -10px);
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAQCAYAAAAvf+5AAAAAAXNSR0IArs4c6QAAAGRJREFUKFNjZMADwjX4/6+88ZERpARMYAMgRSuuf2CI0BRgACnGqhCmCGYASDGGQmyKMEzEpQjFjfgUwRUSUgRWSIwi0hSCVBNjKjx4CClGCUeiggcWC0QFOD7FlCUKZJNhyQwAi8VlK14hrsQAAAAASUVORK5CYII=);
  --close-angle: 45deg;
  transform-origin: top right;
}

.claws::after {
  left: calc(var(--m) * 2.5px);
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAQCAYAAAAvf+5AAAAAAXNSR0IArs4c6QAAAFxJREFUKFNjZICCcA3+/ytvfGSE8dFpsARI0YrrHxgiNAUYcClmhCmCmYBLMYqJ+BTD3UTIZBTH41OM4UtcirEGBzbF5CskymqiPENU8BBSBIoI8qIQb6IgNpkBAEPjZSuK8jVuAAAAAElFTkSuQmCC);
  --close-angle: -45deg;
  transform-origin: top left;
}

.arm.open .claws::before,
.arm.open .claws::after {
  rotate: var(--close-angle);
}

.arm-joint::before {
  --w: 20px;
  --h: 16px;
  transform: scale(var(--scale));
  margin-left: -15px;
  margin-top: var(--shadow-pos);
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAQCAYAAAAWGF8bAAAAAXNSR0IArs4c6QAAAF5JREFUOE9jZMABXmQc+49LDiQuMcOKEZs8iiAhQ3BZgGw43EByDYNZAjMUbCClhiEbSn0DqeU6mCsZRw3El5aJkqN+GA7+dAgLGEqTD0rWo9RQrIUDehQScjGu4gsANVo6j8xbO6QAAAAASUVORK5CYII=);
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAQCAYAAAAWGF8bAAAAAXNSR0IArs4c6QAAAF5JREFUOE9jZMABrKZs/49LDiR+LMeTEZs8iiAhQ3BZgGw43EByDYNZAjMUbCClhiEbSn0DqeU6mCsZRw3El5aJkqN+GA7+dAgLGEqTD0rWo9RQrIUDehQScjGu4gsAxKQ3Ke4v44gAAAAASUVORK5CYII=);
  z-index: -1;
  opacity: 0.5;
}

button {
  position: relative;
  z-index: 5;
  --w: 24px;
  --h: 24px;
  margin: 12px 12px 0 0;
  border: 0;
  background-color: transparent;
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAYAAABWdVznAAAAAXNSR0IArs4c6QAAAFRJREFUKFNjZICC/////4exsdGMjIyMIHEwQUgxzACQJkZsikOPfAarWW3Di2EZhgaYYphKdE0oGtAVY9ME14BLMbomypwEMo0kP9BGA8kRR2rSAACHREftd0fKPgAAAABJRU5ErkJggg==);
  filter: sepia(1) brightness(0.4);
  pointer-events: none;
  cursor: pointer;
}

.hori-btn {
  transform: rotate(90deg);
}

.active {
  animation: pulse infinite 1s;
  pointer-events: all;
}

@keyframes pulse {
  0%,
  100% {
    filter: sepia(0);
  }
  50% {
    filter: sepia(1);
  }
}

.toy.display {
  transform: scale(3);
  animation: forwards show-toy-1 0.8s;
  animation-delay: 1s;
}

.toy {
  position: absolute;
  transition: transform 1s, left 0.3s, top 0.3s;
  --m: 2;
  --w: 20px;
  --h: 27px;
  transform: rotate(var(--rotate-angle));
  pointer-events: none;
}

.toy::after {
  content: '';
}

.toy.bear::after {
  --w: 24px;
  --h: 30px;
  top: calc(var(--m) * -2px);
  left: calc(var(--m) * -2px);
  background-image: url(data:image/png;base64,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);
}

.toy.bear.grabbed::after {
  background-image: url(data:image/png;base64,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);
}

.toy-wrapper .toy.bear::after {
  background-image: url(data:image/png;base64,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);
}

.toy.bunny {
  --w: 20px;
  --h: 29px;
}

.toy.bunny::after {
  --w: 24px;
  --h: 32px;
  top: calc(var(--m) * -2px);
  left: calc(var(--m) * -2px);
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAgCAYAAAAIXrg4AAAAAXNSR0IArs4c6QAAAN1JREFUSEvtVtsNgzAMTCYoY9CJ2hHpRDBGO0Grq2TkOg4+KlAfSv4wjs+cH1xO5pz6w93aLtMtWxueGd+Xi7gwjNci1vnYJQvC+s4AtQuCpkHW+DYAr/ZJ09ko2o4iRAK3ON6saKSiBlFfu2kGRgHJewTXw/kZAJZrnalXG8Rxv6ABrC4yKLO979ls51Zr4LW41EXeRcMmg/lcdnvMwjxoktGWIH+8KpjOiBafjlF00W8CWIXG9PcSTXpeINYoZRfxXvubwf5dAMwatzq2UM2MqGV8hLa3ZTkj3QHyACJNPMzl3sUuAAAAAElFTkSuQmCC);
}

.toy.bunny.grabbed::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAgCAYAAAAIXrg4AAAAAXNSR0IArs4c6QAAAOxJREFUSEvtVsENwjAMTCaAMWAiGBEmgjFgAqpDcmUcp76UVAWpfbVR7LMv5/RyMs/psHvZtev9me0avpm9H4EIuNweRa7zcZ8sCLt3BKgFCJoGadm7AXhnnzSdG0X9KEImcIvHmxWNVJxBpGu3zGBRQPISyfVwrgPAch1RhzxuB60Atf1dAJBEVKXfRXVdOqhRVe3ABtjKpDpmHmgVCc8CHiUfKZJfHxMQqcabZvo2nZMcMW+AJaZ5navCU0sLNVZdhUz/E8A6tG/lqucFZo1ydi3nYF3gbwEw1/hkB1NDx3hTzyTPtuWMdUfBA5gROcxJDOyoAAAAAElFTkSuQmCC);
}

.toy-wrapper .toy.bunny::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAgCAYAAAAIXrg4AAAAAXNSR0IArs4c6QAAAOZJREFUSEvtVtsNgzAMTCZox6ATtSO2E5Ux2gmorpKRcZz4QCC1CL7Asn3J+cHlZJ5rdxqs7dG/s7Xhm/GdBCLg/nwVuW6Xc7IgrO8IUAsQNA0yx/cA8GqfNJ0HRetRhEzgFo83KxqpqEHU1+4xA6OA5C2S6+HcKQBbTE2FV3zkKSiCUbpEv9dq2vJ3AZZ0TAucKrJ3E/Z2FIAeMjltNGwS8112W8zCOGhyojVBdrwqmM6I2tjOxaSL/hPAKjSmv1s0yR6DD8Qapewi3mt/M9h/C4BZ41bHFqqZEbWMj9C2WJYz0h0gH33VNsxxz+QWAAAAAElFTkSuQmCC);
}

.toy.golem::after {
  --w: 26px;
  --h: 30px;
  top: calc(var(--m) * -1px);
  left: calc(var(--m) * -3px);
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABoAAAAeCAYAAAAy2w7YAAAAAXNSR0IArs4c6QAAAQpJREFUSEtjZEAC4Rr8/5H5K298ZKSWPNwgkCVFtRXI5jL0NXcwwCyjVB7FooXbVqFYFO8VhmIRJfJgi0CuRTcEZiPIMhCgRB4UKoz4LEHxHgUckGNHiEWE4gVXKOLShzPoRi0ilBUGZ6qDxRt6QsCVkZHV0ddHhIogCgoEsFZYeYm3UKWWJSBzMOob9KqCXMuQqxi4RbAKj5iIJcViWAIiWHpfPH4ObK6+pRHcfGLFSEp1xBqKTd3gtIiU+MCnFpxhYfkIX3VNroUoiQG9OUWtlIfcsMGaj0aeRcTWvhQFHaEGJXreQW5So5R1sBSIq7wj1ESGWYRezmEkBphC9MY+TJxQox+XOpA4AFO+HuQ4QuSjAAAAAElFTkSuQmCC);
}

.toy.golem.grabbed::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABoAAAAeCAYAAAAy2w7YAAAAAXNSR0IArs4c6QAAARhJREFUSEtjZEAC4Rr8/5H5K298ZKSWPNwgkCVFtRXI5jL0NXcwwCyjVB7FooXbVqFYFO8VhmIRJfJgi0CuRTcEZiPIMhCgRB4UKoz4LEHxHgUckGNHgEWwOIGFFK64QQ9JfPqwBt2oRejZAFuQk5zqKAlWkpL30LCIUBFEQYEA1gorL/EWqtSyBGQORn2DXlWQaxlyFQO3CFbhEVsKEGs5LPEQLL0vHj8HNlPf0ghuNrFiyI4hmI+INRSbusFpEbFxQUgdOOhg+QhfdU3IIFzyKIkBWRE1q3Xkhg3WfEStJD50LCLU/EKun5BbuhhFEL6gI9SgRM87OC2CpUBc5R2hJjLMIvRyDiMxwBSiN/Zh4oQa/bjUgcQBMesk5BS8p3gAAAAASUVORK5CYII=);
}

.toy-wrapper .toy.golem::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABoAAAAeCAYAAAAy2w7YAAAAAXNSR0IArs4c6QAAAR1JREFUSEtjZEAC4Rr8/5H5K298ZKSWPNwgkCVFtRXI5jL0NXcwwCyjVB7FooXbVqFYFO8VhmIRJfJgi0CuRTcEZiPIMhCgRB4UKoz4LEHxHgUckGNHLSIrALEGHSzyYSbiSgToNuLTN7AWkRU2BDSRlOpAirFlWGKCliSLQI6mJP7ol48IFUGUxhmsvMRbqFLLEpA5GPUNelVBrmXIVQzcIliFR0wKIsViWOIhWHpfPH4ObK6+pRHcfGLFkB1EMHkTayg2dYPTIlLiA59acNDB8hG+6ppcC1ESA3pzilopD7lhgzUfjTyLCDW/kJtpyC1djCIIX9ARalCi5x2cFsFSIK7yjlATGWYRejmHkRhgCtEb+zBxQo1+XOpA4gCEWBjkRLE8iwAAAABJRU5ErkJggg==);
}

.toy.cucumber {
  --w: 16px;
  --h: 28px;
}

.toy.cucumber::after {
  --w: 16px;
  --h: 30px;
  top: calc(var(--m) * 1px);
  left: 0;
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAeCAYAAAAl+Z4RAAAAAXNSR0IArs4c6QAAAIVJREFUSEtjZEAD4Rr8/9HFkPkrb3xkRObDOTCNzFvP4NPP8NfbBCwPMwhsAEgzIY3opoIMAhnCSI5mmGEgQ1AMgDkPl2vQ5QehAXiDH4skhheQ1cD8CxPDFi54DSDGNaMGMIDzBXWTMjEhjx7Voy4YjYXhkhIprlhgmYOiqg05h5FauQIAKIamV0t/KUgAAAAASUVORK5CYII=);
}

.toy.cucumber.grabbed::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAeCAYAAAAl+Z4RAAAAAXNSR0IArs4c6QAAAIdJREFUSEtjZEAD4Rr8/9HFkPkrb3xkRObDOTCNzFvP4NPP8NfbBCwPMwhsAEgzIY3opoIMAhnCSI5mmGEgQ1AMgDkPl2vQ5QehAbiCH+RUbN7C8AKyATD/gsTwhQl1YwFvCsIiidcLxBg2agADOGeORuNoGAyXdEBxxQIrOCiq2pBLH1IrVwA8halXrQxpsQAAAABJRU5ErkJggg==);
}

.toy-wrapper .toy.cucumber::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAeCAYAAAAl+Z4RAAAAAXNSR0IArs4c6QAAAIVJREFUSEtjZEAD4Rr8/9HFkPkrb3xkRObDOTCNzFvP4NPP8NfbBCwPMwhsAEgzIY3opoIMAhnCSI5mmGEgQ1AMgDkPl2vQ5QehAcgBBXIezCvIbHQ1eAORmDChbizgTUFYJDFiYdQAUkOAAZwzR6NxNAyGSzqguGKBZSGKqjbkfEhq5QoAaISsV8DV840AAAAASUVORK5CYII=);
}

.toy.penguin {
  --w: 24px;
  --h: 22px;
}

.toy.penguin::after {
  --w: 26px;
  --h: 24px;
  top: calc(var(--m) * -1px);
  left: calc(var(--m) * -1px);
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABoAAAAYCAYAAADkgu3FAAAAAXNSR0IArs4c6QAAAPBJREFUSEtjZMACwjX4/2MTJ1Zs5Y2PjOhqUQRgFvyd/ZhYM7GqY06VBYsjWwi3CGQJpRag2wqyEGYZ2CJaWAKzFGYZIy0tQbYMq0WwMCY1KHHpA4mPYItgwYKespCDl+Sgw5ZMF25bhTXPxHuFMRCKS5xxNGAWgSwmJuhwFScEfbTahpekoij0yGecRRJK8kZ29YrrH0iyBKY4QlMArg8Wd3h9BJIk1TKQJdgSxqhFBOOM6KCja2IgNUnj8iZyUgcnBmwVH6WWoVsCqmXpV8PCvA6qaXEVnDA1oAIU1gYgVT3WVhCucEdvRhFqliGrBwDOBdzprDO9jAAAAABJRU5ErkJggg==);
}

.toy.penguin.grabbed::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABoAAAAYCAYAAADkgu3FAAAAAXNSR0IArs4c6QAAAP9JREFUSEtjZMACwjX4/2MTJ1Zs5Y2PjOhqUQRgFvyd/ZhYM7GqY06VBYsjWwi3CGQJpRag2wqyEGYZ2CJaWAKzFGYZIy0tQbZsYC2CRSapcYZLH0gcw0cgQZgFyGxCyRCfPqwW4TIQ5lp0eWJ8TbRFIIULt63C6oZ4rzB4COBzJFGJgW4WgVxK06BbbcNLKA2gyIce+YyzSEIJOmRXr7j+gSRLYIojNAXg+pBTL844AllKqmUgS7ClQrypbtQiUMQQHXR0TQykJmlcSRM5qYMTA7aKj1LL0C0B1bL0q2FhXgfVtLgKTpgaUAEKawOQqh5rKwhXuKM3owg1y5DVAwDi4Nbp/c5ePwAAAABJRU5ErkJggg==);
}

.toy-wrapper .toy.penguin::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABoAAAAYCAYAAADkgu3FAAAAAXNSR0IArs4c6QAAAPxJREFUSEtjZMACwjX4/2MTJ1Zs5Y2PjOhqUQRgFvyd/ZhYM7GqY06VBYsjWwi3CGQJpRag2wqyEGYZ2CJaWAKzFGYZIy0tQbZsBFgEClNYokBmE0qG+PSB5LAGHSx5IqdCmBi6hdjUoKdenBZhS6YLt63C6ql4rzB4CODy9eCzCORSYoKObB+ttuEllAZQ5EOPfMZZJKEkBmRXr7j+gSRLYIojNAXg+pBTL84MC7KUVMtAlmArL/EmhlGLQBFDdNDRNTGQmqRxJU3kpA5ODNgqPkotQ7cEVMvSr4aFeR1U0+IqOGFqQAUorA1AqnqsrSBc4Y7ejCLULENWDwD2ldbpo7PPMQAAAABJRU5ErkJggg==);
}

.toy.robot {
  --w: 20px;
  --h: 30px;
}

.toy.robot::after {
  --w: 24px;
  --h: 32px;
  top: calc(var(--m) * -1px);
  left: calc(var(--m) * -2px);
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAgCAYAAAAIXrg4AAAAAXNSR0IArs4c6QAAAO5JREFUSEtjZMADwjX4/+OTh8mtvPGREZc6nBIgw1dc/0CM+QwRmgIMuCwBW0CsS4myDUkRyFJGkOFFtRWk6iVKfV9zB8OoBXiDamCCCGQrCJAa8dj0YfXBqAXIQTswkYye7mBxgis94ksMg8MHRBU6OBSBfUDz0hRmOTVLVZDLYfUDvMKhqQWwCgeWIsyiyKsfTi2DFDOwlAevcEBVI6jao6YFMDPBFc6oBbCUiBwH8CBCzgfUjAOQueBIHh75ABZMpFaTuMop+udk5HigpPTE1hjGaPziavQiN3CJUQOzDGvrGltjGL31TIwakCUAkfj3fsmx0PsAAAAASUVORK5CYII=);
}

.toy.robot.grabbed::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAgCAYAAAAIXrg4AAAAAXNSR0IArs4c6QAAAPtJREFUSEtjZMADwjX4/+OTh8mtvPGREZc6nBIgw1dc/0CM+QwRmgIMuCwBW0CsS4myDUkRyFJGkOFFtRWk6iVKfV9zB8OoBXiDahgGEchLyIDY1IVLH0YQ0dwCohI3CYqIimSQIlxBhU8O5A6iLIApxOZwQnFEtAUkhAqKUvpYQPPSFOYnapaqoKCB1Q/wCoemFsAqHFiqMIsir344tQxSEsAyLLzCAVWNoGqPmhbAzARXOKMWwFIichzAgwg5H1AzDkDmgiN5eOQDWDARKh2JLfTon5OR44FYV+JTh9xOxWj84mr0IjdwiVEDcwDW1jW2xjB665kYNSBLAOSw8X4zbpm3AAAAAElFTkSuQmCC);
}

.toy-wrapper .toy.robot::after {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAgCAYAAAAIXrg4AAAAAXNSR0IArs4c6QAAAPlJREFUSEtjZMADwjX4/+OTh8mtvPGREZc6nBIgw1dc/0CM+QwRmgIMuCwBW0CsS4myDUkRyFJGkOFFtRWk6iVKfV9zB8OoBXiDamCCCGQrCJAa8dj0YfXBqAXIQUtUJIMU4YoPfHKgeCTKAphCbOmRUEIg2gKiygUsiuhjAc1LU5jPqFmqgoIGVj/AKxyaWgCrcGCpwiyKvPrh1DJIMQMrDeAVDqhqBFV71LQAZia4whm1AJYSkeMAHkTI+YCacQAyFxzJwyMfwIKJUOlIbKFH/5yMHA/EuhKfOuR2KkbjF1ejF7mBS4wamAOwtq6xNYbRW8/EqAFZAgDgjP1+jrGWQwAAAABJRU5ErkJggg==);
}

.toy.selected {
  pointer-events: all;
}

@keyframes show-toy-1 {
  0% {
    opacity: 1;
    transform: scale(3) translateY(0);
  }
  30% {
    opacity: 0;
  }
  100% {
    opacity: 0;
    transform: scale(1) translateY(-100vh);
  }
}

.control .collection-point {
  filter: brightness(0.8);
  bottom: calc(var(--m) * 8px);
}

.sign {
  position: fixed;
  color: var(--brown);
  bottom: 10px;
  right: 10px;
  font-size: 10px;
}

a {
  color: var(--brown);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

JS

const elements = {
    clawMachine: document.querySelector('.claw-machine'),
    box: document.querySelector('.box'),
    collectionBox: document.querySelector('.collection-box'),
    collectionArrow: document.querySelector('.collection-arrow'),
    toys: [],
  }

const settings = {
    targetToy: null,
    collectedNumber: 0,
  }

const m = 2
  const toys = {
    bear: {
      w: 20 * m,
      h: 27 * m,
    },
    bunny: {
      w: 20 * m,
      h: 29 * m,
    },
    golem: {
      w: 20 * m,
      h: 27 * m,
    },
    cucumber: {
      w: 16 * m,
      h: 28 * m,
    },
    penguin: {
      w: 24 * m,
      h: 22 * m,
    },
    robot: {
      w: 20 * m,
      h: 30 * m,
    },
  }

const sortedToys = [...Object.keys(toys), ...Object.keys(toys)].sort(
    () => 0.5 - Math.random(),
  )

const cornerBuffer = 16

const machineBuffer = {
    x: 36,
    y: 16,
  }

const radToDeg = rad => Math.round(rad * (180 / Math.PI))
  const calcX = (i, n) => i % n
  const calcY = (i, n) => Math.floor(i / n)

const {
    width: machineWidth,
    height: machineHeight,
    top: machineTop,
  } = document.querySelector('.claw-machine').getBoundingClientRect()

const { height: machineTopHeight } = document
    .querySelector('.machine-top')
    .getBoundingClientRect()

const { height: machineBottomHeight, top: machineBottomTop } = document
    .querySelector('.machine-bottom')
    .getBoundingClientRect()

const maxArmLength = machineBottomTop - machineTop - machineBuffer.y

const adjustAngle = angle => {
    const adjustedAngle = angle % 360
    return adjustedAngle < 0 ? adjustedAngle + 360 : adjustedAngle
  }

const randomN = (min, max) => {
    return Math.round(min - 0.5 + Math.random() * (max - min + 1))
  }

//* classes *//

class Button {
    constructor({ className, action, isLocked, pressAction, releaseAction }) {
      Object.assign(this, {
        el: document.querySelector(`.${className}`),
        isLocked,
      })
      this.el.addEventListener('click', action)
      ;['mousedown', 'touchstart'].forEach(action =>
        this.el.addEventListener(action, pressAction),
      )
      ;['mouseup', 'touchend'].forEach(action =>
        this.el.addEventListener(action, releaseAction),
      )

if (!isLocked) this.activate()
    }
    activate() {
      this.isLocked = false
      this.el.classList.add('active')
    }
    deactivate() {
      this.isLocked = true
      this.el.classList.remove('active')
    }
  }

class WorldObject {
    constructor(props) {
      Object.assign(this, {
        x: 0,
        y: 0,
        z: 0,
        angle: 0,
        transformOrigin: { x: 0, y: 0 },
        interval: null,
        default: {},
        moveWith: [],
        el: props.className && document.querySelector(`.${props.className}`),
        ...props,
      })
      this.setStyles()
      if (props.className) {
        const { width, height } = this.el.getBoundingClientRect()
        this.w = width
        this.h = height
      }
      ;['x', 'y', 'w', 'h'].forEach(key => {
        this.default[key] = this[key]
      })
    }
    setStyles() {
      Object.assign(this.el.style, {
        left: `${this.x}px`,
        top: !this.bottom && `${this.y}px`,
        bottom: this.bottom,
        width: `${this.w}px`,
        height: `${this.h}px`,
        transformOrigin: this.transformOrigin,
      })
      this.el.style.zIndex = this.z
    }
    setClawPos(clawPos) {
      this.clawPos = clawPos
    }
    setTransformOrigin(transformOrigin) {
      this.transformOrigin =
        transformOrigin === 'center'
          ? 'center'
          : `${transformOrigin.x}px ${transformOrigin.y}px`
      this.setStyles()
    }
    handleNext(next) {
      clearInterval(this.interval)
      if (next) next()
    }
    resumeMove({ moveKey, target, moveTime, next }) {
      this.interval = null
      this.move({ moveKey, target, moveTime, next })
    }
    resizeShadow() {
      elements.box.style.setProperty('--scale', 0.5 + this.h / maxArmLength / 2)
    }
    move({ moveKey, target, moveTime, next }) {
      if (this.interval) {
        this.handleNext(next)
      } else {
        const moveTarget = target || this.default[moveKey]
        this.interval = setInterval(() => {
          const distance =
            Math.abs(this[moveKey] - moveTarget) < 10
              ? Math.abs(this[moveKey] - moveTarget)
              : 10
          const increment = this[moveKey] > moveTarget ? -distance : distance
          if (
            increment > 0
              ? this[moveKey] < moveTarget
              : this[moveKey] > moveTarget
          ) {
            this[moveKey] += increment
            this.setStyles()
            if (moveKey === 'h') this.resizeShadow()
            if (this.moveWith.length) {
              this.moveWith.forEach(obj => {
                if (!obj) return
                obj[moveKey === 'h' ? 'y' : moveKey] += increment
                obj.setStyles()
              })
            }
          } else {
            this.handleNext(next)
          }
        }, moveTime || 100)
      }
    }
    distanceBetween(target) {
      return Math.round(
        Math.sqrt(
          Math.pow(this.x - target.x, 2) + Math.pow(this.y - target.y, 2),
        ),
      )
    }
  }

class Toy extends WorldObject {
    constructor(props) {
      const toyType = sortedToys[props.index]
      const size = toys[toyType]
      super({
        el: Object.assign(document.createElement('div'), {
          className: `toy pix ${toyType}`,
        }),
        x:
          cornerBuffer +
          calcX(props.index, 4) * ((machineWidth - cornerBuffer * 3) / 4) +
          size.w / 2 +
          randomN(-6, 6),
        y:
          machineBottomTop -
          machineTop +
          cornerBuffer +
          calcY(props.index, 4) *
            ((machineBottomHeight - cornerBuffer * 2) / 3) -
          size.h / 2 +
          randomN(-2, 2),
        z: 0,
        toyType,
        ...size,
        ...props,
      })
      elements.box.append(this.el)
      const toy = this

this.el.addEventListener('click', () => this.collectToy(toy))
      elements.toys.push(this)
    }
    collectToy(toy) {
      toy.el.classList.remove('selected')
      toy.x = machineWidth / 2 - toy.w / 2
      toy.y = machineHeight / 2 - toy.h / 2
      toy.z = 7
      toy.el.style.setProperty('--rotate-angle', '0deg')
      toy.setTransformOrigin('center')
      toy.el.classList.add('display')
      elements.clawMachine.classList.add('show-overlay')
      settings.collectedNumber++
      elements.collectionBox.appendChild(
        Object.assign(document.createElement('div'), {
          className: `toy-wrapper ${
            settings.collectedNumber > 6 ? 'squeeze-in' : ''
          }`,
          innerHTML: `<div class="toy pix ${toy.toyType}"></div>`,
        }),
      )
      setTimeout(() => {
        elements.clawMachine.classList.remove('show-overlay')
        if (!document.querySelector('.selected'))
          elements.collectionArrow.classList.remove('active')
      }, 1000)
    }
    setRotateAngle() {
      const angle =
        radToDeg(
          Math.atan2(
            this.y + this.h / 2 - this.clawPos.y,
            this.x + this.w / 2 - this.clawPos.x,
          ),
        ) - 90
      const adjustedAngle = Math.round(adjustAngle(angle))
      this.angle =
        adjustedAngle < 180 ? adjustedAngle * -1 : 360 - adjustedAngle
      this.el.style.setProperty('--rotate-angle', `${this.angle}deg`)
    }
  }

//* set up *//
  elements.box.style.setProperty('--shadow-pos', `${maxArmLength}px`)

const armJoint = new WorldObject({
    className: 'arm-joint',
  })

const vertRail = new WorldObject({
    className: 'vert',
    moveWith: [null, armJoint],
  })

const arm = new WorldObject({
    className: 'arm',
  })

armJoint.resizeShadow()

armJoint.move({
    moveKey: 'y',
    target: machineTopHeight - machineBuffer.y,
    moveTime: 50,
    next: () =>
      vertRail.resumeMove({
        moveKey: 'x',
        target: machineBuffer.x,
        moveTime: 50,
        next: () => {
          Object.assign(armJoint.default, {
            y: machineTopHeight - machineBuffer.y,
            x: machineBuffer.x,
          })
          Object.assign(vertRail.default, {
            x: machineBuffer.x,
          })
          activateHoriBtn()
        },
      }),
  })

const doOverlap = (a, b) => {
    return b.x > a.x && b.x < a.x + a.w && b.y > a.y && b.y < a.y + a.h
  }

const getClosestToy = () => {
    const claw = {
      y: armJoint.y + maxArmLength + machineBuffer.y + 7,
      x: armJoint.x + 7,
      w: 40,
      h: 32,
    }
    const overlappedToys = elements.toys.filter(t => {
      return doOverlap(t, claw)
    })

if (overlappedToys.length) {
      const toy = overlappedToys.sort((a, b) => b.index - a.index)[0]
      toy.setTransformOrigin({
        x: claw.x - toy.x,
        y: claw.y - toy.y,
      })
      toy.setClawPos({
        x: claw.x,
        y: claw.y,
      })
      settings.targetToy = toy
    }
  }

new Array(12).fill('').forEach((_, i) => {
    if (i === 8) return
    new Toy({ index: i })
  })

const stopHoriBtnAndActivateVertBtn = () => {
    armJoint.interval = null
    horiBtn.deactivate()
    vertBtn.activate()
  }

const activateHoriBtn = () => {
    horiBtn.activate()
    ;[vertRail, armJoint, arm].forEach(c => (c.interval = null))
  }

const dropToy = () => {
    arm.el.classList.add('open')
    if (settings.targetToy) {
      settings.targetToy.z = 3
      settings.targetToy.move({
        moveKey: 'y',
        target: machineHeight - settings.targetToy.h - 30,
        moveTime: 50,
      })
      ;[vertRail, armJoint, arm].forEach(obj => (obj.moveWith[0] = null))
    }
    setTimeout(() => {
      arm.el.classList.remove('open')
      activateHoriBtn()
      if (settings.targetToy) {
        settings.targetToy.el.classList.add('selected')
        elements.collectionArrow.classList.add('active')
        settings.targetToy = null
      }
    }, 700)
  }

const grabToy = () => {
    if (settings.targetToy) {
      ;[vertRail, armJoint, arm].forEach(
        obj => (obj.moveWith[0] = settings.targetToy),
      )
      settings.targetToy.setRotateAngle()
      settings.targetToy.el.classList.add('grabbed')
    } else {
      arm.el.classList.add('missed')
    }
  }

const horiBtn = new Button({
    className: 'hori-btn',
    isLocked: true,
    pressAction: () => {
      arm.el.classList.remove('missed')
      vertRail.move({
        moveKey: 'x',
        target: machineWidth - armJoint.w - machineBuffer.x,
        next: stopHoriBtnAndActivateVertBtn,
      })
    },
    releaseAction: () => {
      clearInterval(vertRail.interval)
      stopHoriBtnAndActivateVertBtn()
    },
  })

const vertBtn = new Button({
    className: 'vert-btn',
    isLocked: true,
    pressAction: () => {
      if (vertBtn.isLocked) return
      armJoint.move({
        moveKey: 'y',
        target: machineBuffer.y,
      })
    },
    releaseAction: () => {
      clearInterval(armJoint.interval)
      vertBtn.deactivate()
      getClosestToy()
      setTimeout(() => {
        arm.el.classList.add('open')
        arm.move({
          moveKey: 'h',
          target: maxArmLength,
          next: () =>
            setTimeout(() => {
              arm.el.classList.remove('open')
              grabToy()
              arm.resumeMove({
                moveKey: 'h',
                next: () => {
                  vertRail.resumeMove({
                    moveKey: 'x',
                    next: () => {
                      armJoint.resumeMove({
                        moveKey: 'y',
                        next: dropToy,
                      })
                    },
                  })
                },
              })
            }, 500),
        })
      }, 500)
    },
  })

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