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canvas-demo

canvas实现弹球动画

  1. 动画元素基类AcGameObject，所有动画元素都继承自基类

    timedelta两帧之间的时间

    start()开始执行一次

    update()每一帧执行一次

    destroy()销毁元素

    • requestAnimationFram()该方法需要传入一个回调函数作为参数，该回调函数会在浏览器下一次重绘之前执行

  2. GameMap类， 画地图，维护rows和cols，以及每格的长度L

  3. Ball类，画球

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