放物線アニメーション編 PHPポケモン 81

<template id="template-effect-ball">
    <img src="" alt="ボール" class="capture-ball">
</template>
<template id="template-effect-ball-open">
  <img src="/Assets/img/animation/ball/ball-open.gif" alt="ボール オープン" class="capture-ball open">
</template>

// ==============================================
// 捕獲処理 =====================================
/**
* @param integer
* @return Promise
**/
var doAnimateCapture = function (param){
    return new Promise ((resolve, reject) => {
        // ボール画像を取得
        var ball = $($('#template-effect-ball').html());
        ball.attr('src', param.src);
        $('#battle-field').prepend(ball);
        // キーフレームの用意
        var l = 25;
        var t = 15;
        var keyframes  = {
            name: 'throw-ball'
        };
        for (var i = 0; i <= 100; i++) {
            var left = l + (i / 2);                          // x座標
            var top = t + 100 ** ((100 - i + 1) / 100) / 2;  // y座標(累乗で山なりにする)
            var rotate = 3.6 * i * 1.5 - 180;                // 回転率
            var per = i + '%';
            keyframes[per] = {
                transform: 'translateY(-50%) translateX(-50%) rotate(' + rotate + 'deg)',
                left: left + '%',
                top: top + '%'
            };
            // 最後の基準Y値は、揺れ処理用に合わせて-100%にする
            if(i === 100){
                keyframes[per].transform = 'translateY(-100%) translateX(-50%) rotate(' + rotate + 'deg)';
            }
        }
        $.keyframe.define(keyframes);
        // ボールスローアニメーション
        ball.show();
        ball.playKeyframe({
            name: 'throw-ball',
            duration: '750ms',
            timingFunction: 'ease',
            delay: '0s',
            iterationCount: 1, // 繰り返し回数
            direction: 'normal',
            fillMode: 'forwards',
            complete: async function(){
                // ボールエフェクト
                ball.hide();
                $('#battle-field').append(
                    $($('#template-effect-ball-open').html())
                );
                await timer(500);
                // 相手ポケモンを非表示
                ball.show();
                $('img.capture-ball.open').hide();
                $('#enemy-pokemon-image').hide();
                // 揺れ演出
                await shakeBall(ball, param.shake);
                if(param.shake >= 4){
                    // 捕獲成功
                    resolve();
                }else{
                    // 捕獲失敗
                    // ボールエフェクト
                    ball.remove();
                    $('#battle-field').append(
                        $('#template-effect-ball-open').html()
                    );
                    // 相手ポケモンを表示
                    $('#enemy-pokemon-image').show();
                    await timer(500);
                    // 非表示
                    $('img.capture-ball.open').hide();
                    await timer(500);
                    resolve();
                }
            }
        });
    });
}

/**
* 揺れアニメーション
* @param ball:element
* @param count:integer
* @return Promise
**/
var shakeBall = function(ball, count){
    return new Promise ((resolve, reject) => {
        $.keyframe.define({
            name: 'shake-ball',
            '0%': {
                transform: 'translateY(-100%) translateX(-50%) rotate(0deg)'
            },
            '30%': {
                transform: 'translateY(-100%) translateX(-50%) rotate(45deg)'
            },
            '60%': {
                transform: 'translateY(-100%) translateX(-50%) rotate(-45deg)'
            },
            '90%': {
                transform: 'translateY(-100%) translateX(-50%) rotate(0deg)'
            },
        });
        ball.playKeyframe({
            name: 'shake-ball',
            duration: '500ms',
            timingFunction: 'ease',
            delay: '500ms',
            iterationCount: count, // 繰り返し回数
            direction: 'normal',
            fillMode: 'forwards',
            complete: function(){
                setTimeout(function() {
                    resolve();
                }, 500);
            }
        });
    });
}