ee397c181e585

代码说明：

  实现了最基本的冲突检测，也就是j2me中最基本的问题，应为坦克运动时，会碰壁，而这个程序中较好的做到了这一点。而且，其中也实现了积分的操作，数据库读写。(Achieve a basic conflict detection, which is the basic problem in j2me, for tank movement will run into a wall, and this program do it better. Furthermore, which also achieve the integral operation, the database to read and write.)