CNavigatorManualSequence.cpp

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          https://www.mrpt.org/                         |
   |                                                                        |
   | Copyright (c) 2005-2019, Individual contributors, see AUTHORS file     |
   | See: https://www.mrpt.org/Authors - All rights reserved.               |
   | Released under BSD License. See: https://www.mrpt.org/License          |
   +------------------------------------------------------------------------+ */

#include "nav-precomp.h"  // Precomp header

#include <mrpt/config/CConfigFileBase.h>
#include <mrpt/kinematics/CVehicleVelCmd_DiffDriven.h>
#include <mrpt/kinematics/CVehicleVelCmd_Holo.h>
#include <mrpt/nav/reactive/CNavigatorManualSequence.h>
#include <mrpt/system/string_utils.h>

using namespace mrpt::nav;

CNavigatorManualSequence::CNavigatorManualSequence(
    CRobot2NavInterface& robot_interface)
    : CAbstractNavigator(robot_interface)
{
}

// Dtor:
CNavigatorManualSequence::~CNavigatorManualSequence() = default;
void CNavigatorManualSequence::saveConfigFile(
    mrpt::config::CConfigFileBase& c) const
{
}

void CNavigatorManualSequence::loadConfigFile(
    const mrpt::config::CConfigFileBase& c)
{
    const std::string s = "CNavigatorManualSequence";

    programmed_orders.clear();
    std::vector<std::string> lstKeys;
    c.getAllKeys(s, lstKeys);

    for (const auto& lstKey : lstKeys)
    {
        std::string str = c.read_string(s, lstKey, "", true);
        std::vector<std::string> toks;
        mrpt::system::tokenize(str, " \t\r\n", toks);
        ASSERTMSG_(
            toks.size() > 2,
            std::string("Wrong format while parsing CNavigatorManualSequence "
                        "cfg file in entry: ") +
                lstKey);

        const double t = atof(toks[0].c_str());
        TVelCmd krc;

        const size_t nComps = toks.size() - 1;
        switch (nComps)
        {
            case 2:
                krc.cmd_vel = std::make_shared<
                    mrpt::kinematics::CVehicleVelCmd_DiffDriven>();
                break;
            case 4:
                krc.cmd_vel = mrpt::kinematics::CVehicleVelCmd_Holo::Create();
                break;
            default:
                THROW_EXCEPTION("Expected 2 or 4 velocity components!");
        };

        for (size_t j = 0; j < nComps; j++)
            krc.cmd_vel->setVelCmdElement(j, atof(toks[j + 1].c_str()));

        // insert:
        programmed_orders[t] = krc;
    }
}

void CNavigatorManualSequence::initialize()
{
    ASSERT_(!programmed_orders.empty());
    m_robot.resetNavigationTimer();
}

/** Overriden in this class to ignore the cancel/pause/... commands */
void CNavigatorManualSequence::navigationStep()
{
    if (programmed_orders.empty()) return;

    const double t = m_robot.getNavigationTime();

    if (t >= programmed_orders.begin()->first)
    {
        const TVelCmd& krc = programmed_orders.begin()->second;
        // Send cmd:
        logFmt(
            mrpt::system::LVL_DEBUG,
            "[CNavigatorManualSequence] Sending cmd: t=%f\n",
            programmed_orders.begin()->first);

        if (!this->changeSpeeds(*krc.cmd_vel))
        {
            this->stop(true /*not emergency*/);
            logFmt(
                mrpt::system::LVL_ERROR,
                "[CNavigatorManualSequence] **ERROR** sending cmd to robot.");
            return;
        }
        // remove:
        programmed_orders.erase(programmed_orders.begin());
    }
}