ネイティブJSで白いブロックを踏まないゲームを実装 (10)

//移动效果

function move(obj) {

    //默认速度与计分

    var speed = 5, num = 0;

    obj.timer = setInterval(function () {

        //速度

        var step = parseInt(getComputedStyle(obj, null)['top']) + speed;

        obj.style.top = step + 'px'

        if (parseInt(getComputedStyle(obj, null)['top']) >= 0) {

           CDiv('row');

            obj.style.top = -150 + 'px';

        }

        if (obj.children.length == 6) {

            for (var i = 0; i < 4; i++) {

                if (obj.children[obj.children.length - 1].children[i].className == &#39;i&#39;) {

                    //游戏结束

                    obj.style.top = &#39;-150px&#39;;

                    count.innerHTML = &#39;游戏结束,最高得分: &#39; + num;

                    //关闭定时器

                    clearInterval(obj.timer);

                    //显示开始游戏

                    go.children[0].innerHTML = &#39;游戏结束&#39;;

                    go.style.display = "block";

                }

            }

            obj.removeChild(obj.children[obj.children.length - 1]);

        }

        //点击与计分

        obj.onmousedown = function (event) {

            //点击的不是白盒子

            // 兼容IE

            event = event || window.event;

            if ((event.target ? event.target : event.srcElement).className == &#39;i&#39;) {

                //点击后的盒子颜色

                (event.target ? event.target : event.srcElement).style.backgroundColor = "#bbb";

                //清除盒子标记

                (event.target ? event.target : event.srcElement).className = &#39;&#39;;

                //计分

                num++;

                //显示得分

                count.innerHTML = &#39;当前得分: &#39; + num;

            }

            else {

                //游戏结束

                obj.style.top = 0;

                count.innerHTML = &#39;游戏结束,最高得分: &#39; + num;

                //关闭定时器

                clearInterval(obj.timer);

                //显示开始游戏

                go.children[0].innerHTML = &#39;游戏结束&#39;;

                go.style.display = "block";

            }

            //盒子加速

            if (num % 10 == 0) {

                speed++;

            }

        }

        //松开触发停止

        obj.onmouseup = function (event) {

        }

    }, 20)

}