在IOS上实现的一个飞机游戏，包括内存管理、碰撞检测、导弹运行轨迹设计等等。-A plane game compiled in IOS, including memory management, collision detection, design of gun route, and so on.

在ios屏幕上显示快速滑动手指留下的带状/刀状轨迹，类似切水果游戏的轨迹效果-Catch and show a strip-like trail on the ios device screen , think of the effect of fruit-cut game

在使用CoreAnimation得一些常用得动画效果。图片发大，缩小，有轨迹运动，加边框，绘波状图-CoreAnimation have some common use was animated. Pictures made big, narrow, there trajectory, add borders, painted wavy Figure