public void updateCommand(int drone, CommandsUpDownStopEnum command) {
   switch (drone) {
     case 1:
       if (commandsLeft != null) commandsLeft.stopDrone(command == CommandsUpDownStopEnum.STOP);
       break;
     case -1:
       if (commandsRight != null) commandsRight.stopDrone(command == CommandsUpDownStopEnum.STOP);
       break;
   }
 }