泛洪协议的场景测试协议 选择一个包含50个节点的1200*1200正方形区域的场景，每个节点随机选择自己的运动方向和运动速度，最大运动速度为40m/s，平均速度为20m/s，场景持续400s。-Flooding protocol testing protocol scenes　select a node that contains 50 of the 1200* 1200 square regional scenes, each node randomly choose its own direction and velocity of movement, the biggest sports at 40m/s, average speed of 20m/s , the scene continued to 400s.