Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
怎么锁定一个物体,让他检测到别的符合物体仍然锁定先前物体
就是先检测到a小车往a走 快走到了 却将目标转移到了b 怎么让他锁定一个目标