一个在单文档界面下的跟踪程序,可以自己控制一个物体,另一个物体自动跟踪的源代码-a single-document interface in the tracking process, one can control their objects, Another object of automatic tracking the source code

一个简单的ios塔防游戏源代码，里面有敌人寻路、防御塔追踪、升级系统等等。-a sample Tower Defend Game s code,There are so many systems in it such as Animy-Auto,Target tracking,Level system and so on.