既然类和组件有着这么多类似的地方，那么传统的面向对象编程和面向组件编程有什么区别呢？简单的说，面向对象关注的是组合在一个二进制可执行文件中的各个类的关系，而面向组件的编程关注的是在彼此独立的基础上模块之间的交互性-Launch the use case. Refer to the use case article, where a section entitled "How to Launch the CAAUseCase" may give additional information. Yo

em-x中实现的一个例程，模拟了子弹发射效果，分为跟踪和不跟踪。-A routine em-x implemented to simulate the effect of a bullet launch, divided into tracking and not tracking.