这是用netlogo编写的一款小游戏，青蛙过河。netlogo是一个用来对自然和社会现象进行仿真的可编程建模环境。它是由UriWilensy在1999年发起的，由链接学习和计算机建模中心（CCL）负责持续开发，其研发目的正是为科研教育机构提供一个强大且易用的计算机辅助工具。-This is netlogo prepared a little game, Frogger. netlogo is used to simulate the natural and social phenomena programmable modeling environment. It is made UriWilensy initiated in 1999 by the links and computer modeling study center (CCL) is responsible for the continued development of its R & D is the object to provide a powerful and easy to use computer-aided tools for the research and education institutions.