gotoActionExample.cpp

Uses ArActionGoto to drive the robot in a squareThis program will make the robot drive in a 2.5x2.5 meter square by setting each corner in turn as the goal for an ArActionGoto action. It also uses speed limiting actions to avoid collisions. After some time, it cancels the goal (and the robot stops due to a stopping action) and exits.

Press escape to shut down Aria and exit.

/*
Adept MobileRobots Robotics Interface for Applications (ARIA)
Copyright (C) 2004, 2005 ActivMedia Robotics LLC
Copyright (C) 2006, 2007, 2008, 2009, 2010 MobileRobots Inc.
Copyright (C) 2011, 2012, 2013 Adept Technology

     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.

     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.

     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

If you wish to redistribute ARIA under different terms, contact 
Adept MobileRobots for information about a commercial version of ARIA at 
robots@mobilerobots.com or 
Adept MobileRobots, 10 Columbia Drive, Amherst, NH 03031; +1-603-881-7960
*/
#include "Aria.h"

int main(int argc, char **argv)
{
  Aria::init();
  ArArgumentParser parser(&argc, argv);
  parser.loadDefaultArguments();
  ArSimpleConnector simpleConnector(&parser);
  ArRobot robot;
  ArSonarDevice sonar;
  ArAnalogGyro gyro(&robot);
  robot.addRangeDevice(&sonar);

  // Make a key handler, so that escape will shut down the program
  // cleanly
  ArKeyHandler keyHandler;
  Aria::setKeyHandler(&keyHandler);
  robot.attachKeyHandler(&keyHandler);
  printf("You may press escape to exit\n");

  // Collision avoidance actions at higher priority
  ArActionLimiterForwards limiterAction("speed limiter near", 300, 600, 250);
  ArActionLimiterForwards limiterFarAction("speed limiter far", 300, 1100, 400);
  ArActionLimiterTableSensor tableLimiterAction;
  robot.addAction(&tableLimiterAction, 100);
  robot.addAction(&limiterAction, 95);
  robot.addAction(&limiterFarAction, 90);

  // Goto action at lower priority
  ArActionGoto gotoPoseAction("goto");
  robot.addAction(&gotoPoseAction, 50);
  
  // Stop action at lower priority, so the robot stops if it has no goal
  ArActionStop stopAction("stop");
  robot.addAction(&stopAction, 40);

  // Parse all command line arguments
  if (!Aria::parseArgs() || !parser.checkHelpAndWarnUnparsed())
  {    
    Aria::logOptions();
    Aria::exit(1);
    return 1;
  }
  
  // Connect to the robot
  if (!simpleConnector.connectRobot(&robot))
  {
    printf("Could not connect to robot... exiting\n");
    Aria::exit(1);
    return 1;
  }
  robot.runAsync(true);

  // turn on the motors, turn off amigobot sounds
  robot.enableMotors();
  robot.comInt(ArCommands::SOUNDTOG, 0);

  const int duration = 30000; //msec
  ArLog::log(ArLog::Normal, "Going to four goals in turn for %d seconds, then cancelling goal and exiting.", duration/1000);

  bool first = true;
  int goalNum = 0;
  ArTime start;
  start.setToNow();
  while (Aria::getRunning()) 
  {
    robot.lock();

    // Choose a new goal if this is the first loop iteration, or if we 
    // achieved the previous goal.
    if (first || gotoPoseAction.haveAchievedGoal())
    {
      first = false;
      goalNum++;
      if (goalNum > 4)
        goalNum = 1; // start again at goal #1

      // set our positions for the different goals
      if (goalNum == 1)
        gotoPoseAction.setGoal(ArPose(2500, 0));
      else if (goalNum == 2)
        gotoPoseAction.setGoal(ArPose(2500, 2500));
      else if (goalNum == 3)
        gotoPoseAction.setGoal(ArPose(0, 2500));
      else if (goalNum == 4)
        gotoPoseAction.setGoal(ArPose(0, 0));

      ArLog::log(ArLog::Normal, "Going to next goal at %.0f %.0f", 
            gotoPoseAction.getGoal().getX(), gotoPoseAction.getGoal().getY());
    }

    if(start.mSecSince() >= duration) {
      ArLog::log(ArLog::Normal, "%d seconds have elapsed. Cancelling current goal, waiting 3 seconds, and exiting.", duration/1000);
      gotoPoseAction.cancelGoal();
      robot.unlock();
      ArUtil::sleep(3000);
      break;
    }

    robot.unlock();
    ArUtil::sleep(100);
  }
  
  // Robot disconnected or time elapsed, shut down
  Aria::exit(0);
  return 0;
}