制造一种象街机游戏中目标移动的效果，一串字符会象蛇一样漂移前进。采用数学三角函数，使前进的速度是渐变流畅的。-manufacture arcade games as a target moving effect, a bunch of characters like snakes will drift forward. Mathematical trigonometry, the speed of progress is gradual fluent.

一个类似以前街机赛马游戏设计的小程序，有图像进度框和三匹马分别设计速度的选项。-A similar arcade racing game designed before small procedures, the progress of the image frame and the speed of the three options were designed for horses.