document.title = 'トランプ ゲーム ダブルアップ';
$(function(){
  var cardTexts = $('#cards').text();
  $('#cards').remove();
  var cardsOrg = [];
  var cards = [];
  var cardTextAty = cardTexts.split('\n');
  var playerData = {};
  var enemyData = {};

  var backText = $('#back').text();
  $('#back').remove();

  [0,1,2,3].forEach(function(j){
    [1,2,3,4,5,6,7,8,9,10,11,12,13].forEach(function(i){
      var n = (j*13)+i;
      var color = '#000';
      if(j===1 || j===3){
        color = '#f00';
      }
      var data = {
        n:n,
        text : cardTextAty[n],
        j:j,
        i:i,
        color:color,
      };
      cardsOrg.push(data);
    });
  });
  var dataJoker = {
    n:53,
    text : cardTextAty[53],
    j:4,
    i:15,
    color:'#00f',
  };
  cards.push(dataJoker);
  console.log(cardsOrg);

  $demo = $('#demo');
  $form = $('<form>');
  $area = $('<div>');
  $h1 = $('<h1>').text(document.title);
  $h2 = $('<h2>').text('4枚のトランプから選んだ札の数字が相手より高ければ勝利');
  $player = $('<div>',{id:'player'});
  $enemy = $('<div>',{id:'enemy'});
  $result = $('<div>',{id:'result'});
  $demo
    .append($form)
  $form
    .append($area)
    .append($result);
  $area
    .append($enemy)
    .append($player);
  $demo.after($h1).after($h2);

  cards = cardsOrg.concat();
  cards = _.shuffle(cards);
  
  function gameSet(data){
    if(cards.length < 6){
      cards = cardsOrg.concat();
    }
    $enemy.empty();
    $player.empty();
    playerCards = [];
    var data = data || cards.pop();
    enemyData = data;
    var $card = $('<a>')
      .attr(data)
      .css({color:data.color})
      .text(data.text);
    $enemy.append($card);
    [0,1,2,4].forEach(function(){
      var data = cards.pop();
      var $i = $('<i>')
      var $card = $('<a>')
        .attr(data)
        .text(backText);
      data.ele = $card;
      $player.append($card);
      playerCards.push(data);
      $card.on('click', function(){
        select(data);
      });
    });;
    console.log(playerCards);
    var canWin = false;
    playerCards.forEach(function(data){
      if(checkBout(data, enemyData)===2){
        canWin = true;
      }
    });
    if(!canWin){gameSet();}
    $result.text('SELECT');
    $demo.addClass('start');
  }

  function open(data){
    data.ele.text(data.text);
    data.ele.css({color:data.color});
  }
  function select(data){
    if(!$demo.hasClass('start')){return;}
    console.log(data);
    open(data);
    playerData = data;
    data.ele.addClass('select');
    setTimeout(function(){
      $demo.addClass('select');
    }, 999)
    var bout = checkBout(playerData, enemyData);
    if(bout === 2){
      $result.text('win');
    }
    if(bout === 1){
      $result.text('lose');
    }
    if(bout === 0){
      $result.text('draw');
    }
  }

  function checkBout(playerData, enemyData){
    console.log({
      playerData:playerData,
      enemyData:enemyData,
    });
    if(playerData.i === 53){
      return 2;
    }
    if(enemyData.i === 53){
      return 1;
    }
    if(playerData.i === 1 && enemyData.i !== 1){
      return 2;
    }
    if(enemyData.i === 1 && playerData.i !== 1){
      return 1;
    }
    if(playerData.i > enemyData.i){
      return 2;
    }
    if(playerData.i < enemyData.i){
      return 1;
    }
    return 0;
  }

  $demo.on('click', function(){
    if($demo.hasClass('select')){
      $demo.addClass('open');
      $demo.removeClass('select');
      playerCards.forEach(function(v){
        open(v);
      });
    } else if($demo.hasClass('open')){
      $demo.addClass('start');
      $demo.removeClass('open');
      //gameSet(playerData);
      gameSet();
    }
  });

  
  gameSet();
});

#demo{
  display: grid;
  place-items: center;
}

form{
  margin-top:10vh;
  display: grid;
  flex-wrap: wrap;
  font-size:18vw;
}

#enemy{
  width:25%;
}
#player{
  width:60%;
  display:flex;
  text-align:center;
}
#result{
  width:100%;
  font-size:9vw;
  text-align:center;
}


#demo a{
  display:inline-block;
  width:12vw;
  cursor:pointer;
  position:relative;
  top:0;
  left:0;
  margin:0 1vw;
  text-align:center;
}

#demo i{
  display:block;
  width:100%;
  height:100%;
  position:absolute;
  top:0;
  left:0;
  background-color:rgba(0,0,0);
  z-index:1;
}

#demo a.select{

  transform: translate(0px, -10px);

}

#demo:not(.select) a:hover{
  background-color:rgba(0,0,0,0.1);
}

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view-source:https://hi0a.com/demo/-js/js-game-playing-card-double-up/