定时更新
定时检测两个平台的距离，若距离小于某个值时触发函数

# File generated by Wizard 2.9.0 on Nov 21, 2024.

platform_type TANK WSF_PLATFORM
   icon tank
   
   mover WSF_GROUND_MOVER
   end_mover
   
end_platform_type

platform tank_red TANK
   position 24:42:36.68n 121:01:27.23e
   side red
   
   route
      position 24:42:36.680n 121:01:27.230e altitude 0.00 ft agl
         speed 22.352 m/s 
      label Waypoint-1
         position 24:42:27.710n 121:00:48.453e
         altitude 0.00 ft agl 
      label Waypoint-2
         position 24:42:15.430n 120:59:47.653e
         altitude 0.00 ft agl 
      label Waypoint-3
         position 24:42:04.213n 120:58:36.929e
         altitude 0.00 ft agl 
      label Waypoint-4
         position 24:41:51.923n 120:57:44.916e
         altitude 0.00 ft agl 
      label Waypoint-5
         position 24:41:12.493n 120:57:22.169e
         altitude 0.00 ft agl 
      label Waypoint-6
         position 24:40:53.822n 120:57:52.570e
         altitude 0.00 ft agl 
      label Waypoint-7
         position 24:41:10.909n 120:58:41.639e
         altitude 0.00 ft agl  
   end_route

end_platform

platform tank_blue TANK
   position 24:41:26.923n 120:57:42.288e
   side blue
   
   update_interval 0.5 s
   
   on_initialize
      
   end_on_initialize
   
   script_variables
      bool flag = true;
   end_script_variables

   on_update
      WsfPlatform tank_red = WsfSimulation.FindPlatform("tank_red");
      WsfPlatform tank_blue = WsfSimulation.FindPlatform("tank_blue");
      double lat_red = tank_red.Latitude();
      double lon_red = tank_red.Longitude();
         
      double lat_blue = tank_blue.Latitude();
      double lon_blue = tank_blue.Longitude();
         
      WsfGeoPoint loc = tank_blue.Location();
         
      double distance = Math.Sqrt((lat_red - lat_blue)*(lat_red - lat_blue) + (lon_red - lon_blue)*(lon_red - lon_blue));
      
      if (distance < 0.003 && flag) {
         writeln("In area, distance is: ", distance);
         flag = false;
      }
      
   end_on_update
end_platform

event_output
   file jacksonabad.evt
end_event_output

event_pipe
   file jacksonabad.aer
end_event_pipe

end_time 1 hr