设计一个电梯模拟系统,这是一个离散的模拟程序,因为电梯系统是乘客和电梯等”活动体”构成的集合,虽然它们彼此交互作用,但它们的行为是基本独立的.在离散的模拟中,以模拟时钟决定每一个活动体的动作发生的时刻和顺序,系统在某个模拟瞬间处理有待完成的各种事情,然后把模拟时钟推进到某个动作预定要发生的下一个时刻-Elevator design a simulation system, which is a discrete simulation program, because the elevator system and elevator passengers and other " physical activities"　constitute a collection, although they interact with each other, but their behavior is a fundamental independent. In discrete simulation to simulate the activities of each of the clock decided to move the body and the order of the moment of its occurrence, the system in a simulation of the moment to deal with a variety of things to be done, and then the simulation clock advanced to an action scheduled to take place the next time