JavaScriptでスロットマシン

2019/07/16

2019/07/17

この記事を書いている人 - WRITER -

サラリーマンエンジニアです。平成３１年４月１日から1日当たり100円を FX口座に積立てて令和元年の初日から自作プログラムによるシステムトレードをしています。プログラミングを基礎から学習しつつ効率的な自動売買ロジックを考えて、副収入で月給を超えることを目標にコツコツ頑張ります。

http://www.mukuchan.com/dotinstall/js/slotmachine/

<!DOCTYPE html>
<html lang="ja">
<head>
  <meta charset="utf-8">
  <title>Slot Machine</title>
  <link rel="stylesheet" href="css/styles.css">
</head>
<body>
  <main></main>

  <div id="spin">SPIN</div>

  <script src="js/main.js"></script>
</body>
</html>

<!DOCTYPE html>

<head>

<title>Slot Machine</title>

</head>

<body>

</body>

</html>

'use strict';

{
  class Panel {
    constructor() {
      const section = document.createElement('section');
      section.classList.add('panel');

      this.img = document.createElement('img');
      this.img.src = this.getRandomImage();

      this.timeoutId = undefined;

      this.stop = document.createElement('div');
      this.stop.textContent = 'STOP';
      this.stop.classList.add('stop', 'inactive');
      this.stop.addEventListener('click', () => {
        if (this.stop.classList.contains('inactive')) {
          return;
        }
        this.stop.classList.add('inactive');

        clearTimeout(this.timeoutId);

        panelsLeft--;

        if (panelsLeft === 0) {
          checkResult();
          spin.classList.remove('inactive');
          panelsLeft = 3;
        }
      });

      section.appendChild(this.img);
      section.appendChild(this.stop);

      const main = document.querySelector('main');
      main.appendChild(section);
    }

    getRandomImage() {
      const images = [
        'img/seven.png',
        'img/bell.png',
        'img/cherry.png',
      ];
      return images[Math.floor(Math.random() * images.length)];
    }

    spin() {
      this.img.src = this.getRandomImage();
      this.timeoutId = setTimeout(() => {
        this.spin();
      }, 50);
    }

    isUnmatched(p1, p2) {
      return this.img.src !== p1.img.src && this.img.src !== p2.img.src;
    }

    unmatch() {
      this.img.classList.add('unmatched');
    }

    activate() {
      this.img.classList.remove('unmatched');
      this.stop.classList.remove('inactive');
    }
  }

  function checkResult() {
    if (panels[0].isUnmatched(panels[1], panels[2])) {
      panels[0].unmatch();
    }
    if (panels[1].isUnmatched(panels[0], panels[2])) {
      panels[1].unmatch();
    }
    if (panels[2].isUnmatched(panels[0], panels[1])) {
      panels[2].unmatch();
    }
  }

  const panels = [
    new Panel(),
    new Panel(),
    new Panel(),
  ];

  let panelsLeft = 3;

  const spin = document.getElementById('spin');
  spin.addEventListener('click', () => {
    if (spin.classList.contains('inactive')) {
      return;
    }
    spin.classList.add('inactive');

    panels.forEach(panel => {
      panel.activate();
      panel.spin();
    });
  });
}

100

101

102

103

'use strict';

{

class Panel {

constructor() {

const section = document.createElement('section');

section.classList.add('panel');

this.img = document.createElement('img');

this.img.src = this.getRandomImage();

this.timeoutId = undefined;

this.stop = document.createElement('div');

this.stop.textContent = 'STOP';

this.stop.classList.add('stop', 'inactive');

this.stop.addEventListener('click', () => {

if (this.stop.classList.contains('inactive')) {

return;

}

this.stop.classList.add('inactive');

clearTimeout(this.timeoutId);

panelsLeft--;

if (panelsLeft === 0) {

checkResult();

spin.classList.remove('inactive');

panelsLeft = 3;

}

});

section.appendChild(this.img);

section.appendChild(this.stop);

const main = document.querySelector('main');

main.appendChild(section);

}

getRandomImage() {

const images = [

'img/seven.png',

'img/bell.png',

'img/cherry.png',

];

return images[Math.floor(Math.random() * images.length)];

}

spin() {

this.img.src = this.getRandomImage();

this.timeoutId = setTimeout(() => {

this.spin();

}, 50);

}

isUnmatched(p1, p2) {

return this.img.src !== p1.img.src && this.img.src !== p2.img.src;

}

unmatch() {

this.img.classList.add('unmatched');

}

activate() {

this.img.classList.remove('unmatched');

this.stop.classList.remove('inactive');

}

function checkResult() {

if (panels[0].isUnmatched(panels[1], panels[2])) {

panels[0].unmatch();

}

if (panels[1].isUnmatched(panels[0], panels[2])) {

panels[1].unmatch();

}

if (panels[2].isUnmatched(panels[0], panels[1])) {

panels[2].unmatch();

}

const panels = [

new Panel(),

];

let panelsLeft = 3;

const spin = document.getElementById('spin');

spin.addEventListener('click', () => {

if (spin.classList.contains('inactive')) {

return;

}

spin.classList.add('inactive');

panels.forEach(panel => {

panel.activate();

panel.spin();

});

}

body {
  background: #bdc3c7;
  font-size: 16px;
  font-weight: bold;
  font-family: Arial, sans-serif;
}

main {
  width: 300px;
  background: #ecf0f1;
  padding: 20px;
  border: 4px solid #fff;
  border-radius: 12px;
  margin: 16px auto;
  display: flex;
  justify-content: space-between;
}

.panel img {
  width: 90px;
  height: 110px;
  margin-bottom: 4px;
}

.stop {
  cursor: pointer;
  width: 90px;
  height: 32px;
  background: #ef454a;
  box-shadow: 0 4px 0 #d1483e;
  border-radius: 16px;
  line-height: 32px;
  text-align: center;
  font-size: 14px;
  color: #fff;
  user-select: none;
}

#spin {
  cursor: pointer;
  width: 280px;
  height: 36px;
  background: #3498db;
  box-shadow: 0 4px 0 #2880b9;
  border-radius: 18px;
  line-height: 36px;
  text-align: center;
  color: #fff;
  user-select: none;
  margin: 0 auto;
}

.unmatched {
  opacity: 0.5;
}

.inactive {
  opacity: 0.5;
}