root / scout / scoutsim / src / sim_frame.cpp @ 0076084e
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/**
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* The code in this package was developed using the structure of Willow
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* Garage's turtlesim package. It was modified by the CMU Robotics Club
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* to be used as a simulator for the Colony Scout robot.
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*
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* All redistribution of this code is limited to the terms of Willow Garage's
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* licensing terms, as well as under permission from the CMU Robotics Club.
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*
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* Copyright (c) 2011 Colony Project
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* Copyright (c) 2009, Willow Garage, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* Neither the name of the Willow Garage, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "sim_frame.h" |
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#include <stdio.h> |
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#include <ros/package.h> |
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#include <cstdlib> |
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#include <ctime> |
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using namespace std; |
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namespace scoutsim
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{ |
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SimFrame::SimFrame(wxWindow* parent, string map_name)
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: wxFrame(parent, wxID_ANY, wxT("ScoutSim"), wxDefaultPosition,
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wxSize(500, 500), wxDEFAULT_FRAME_STYLE & ~wxRESIZE_BORDER) |
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, frame_count(0)
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, id_counter(0)
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{ |
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std::cout << "Constructing sim frame." << std::endl;
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srand(time(NULL));
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update_timer = new wxTimer(this); |
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update_timer->Start(16);
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Connect(update_timer->GetId(), wxEVT_TIMER, |
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wxTimerEventHandler(SimFrame::onUpdate), NULL, this); |
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Connect(wxEVT_PAINT, wxPaintEventHandler(SimFrame::onPaint), |
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NULL, this); |
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images_path = ros::package::getPath("scoutsim") + "/images/"; |
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// 200 pixels per meter. @todo make this a constant elsewhere.
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meter = 200;
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map_base_name = ros::package::getPath("scoutsim") + "/maps/" + |
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map_name + ".bmp";
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map_lines_name = ros::package::getPath("scoutsim") + "/maps/" + |
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map_name + "_lines.bmp";
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map_walls_name = ros::package::getPath("scoutsim") + "/maps/" + |
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map_name + "_walls.bmp";
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display_map_name = map_base_name; |
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wxBitmap lines_bitmap; |
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wxBitmap walls_bitmap; |
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path_bitmap.LoadFile(wxString::FromAscii(display_map_name.c_str())); |
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sonar_on = TRUE; |
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// Try to load the file; if it fails, make a new blank file
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if (!lines_bitmap.LoadFile(wxString::FromAscii(map_lines_name.c_str())))
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{ |
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lines_bitmap = wxBitmap(path_bitmap.GetWidth(), path_bitmap.GetHeight(), 3);
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} |
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lines_image = lines_bitmap.ConvertToImage(); |
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// Try to load the file; if it fails, make a new blank file
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if (!walls_bitmap.LoadFile(wxString::FromAscii(map_walls_name.c_str())))
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{ |
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walls_bitmap = wxBitmap(path_bitmap.GetWidth(), path_bitmap.GetHeight(), 3);
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} |
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walls_image = walls_bitmap.ConvertToImage(); |
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clear(); |
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clear_srv = nh.advertiseService("clear",
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&SimFrame::clearCallback, this);
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reset_srv = nh.advertiseService("reset",
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&SimFrame::resetCallback, this);
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spawn_srv = nh.advertiseService("spawn",
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&SimFrame::spawnCallback, this);
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kill_srv = nh.advertiseService("kill",
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&SimFrame::killCallback, this);
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// Subscribe and publisher wirless from robots
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wireless_receive = nh.advertise< ::messages::WirelessPacket>( |
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"/wireless/receive", 1000); |
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wireless_send = nh.subscribe("/wireless/send", 1000, |
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&SimFrame::wirelessCallback, this);
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// Teleop
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teleop_type = TELEOP_OFF; |
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teleop_l_speed = 0;
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teleop_r_speed = 0;
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teleop_pub = nh.advertise<motors::set_motors>("/scout1/set_motors", 1000); |
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ROS_INFO("Starting scoutsim with node name %s",
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ros::this_node::getName().c_str()) ; |
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wxMenu *menuFile = new wxMenu;
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menuFile->Append(ID_ABOUT, _("&About"));
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menuFile->AppendSeparator(); |
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menuFile->Append(ID_QUIT, _("E&xit"));
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wxMenu *menuSim = new wxMenu;
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menuSim->Append(ID_SONAR, _("S&onar"));
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menuSim->Append(ID_CLEAR, _("&Clear"));
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wxMenu *menuView = new wxMenu;
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menuView->Append(ID_MAP, _("&Map"));
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menuView->Append(ID_LINES, _("&Lines"));
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menuView->Append(ID_WALLS, _("&Walls"));
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wxMenu *menuTeleop = new wxMenu;
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menuTeleop->Append(ID_TELEOP_NONE, _("&None"));
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menuTeleop->Append(ID_TELEOP_PRECISE, _("&Precise"));
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menuTeleop->Append(ID_TELEOP_FLUID, _("&Fluid"));
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wxMenuBar *menuBar = new wxMenuBar;
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menuBar->Append(menuFile, _("&File"));
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menuBar->Append(menuSim, _("&Sim"));
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menuBar->Append(menuView, _("&View"));
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menuBar->Append(menuTeleop, _("&Teleop"));
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SetMenuBar(menuBar); |
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width_in_meters = GetSize().GetWidth() / meter; |
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height_in_meters = GetSize().GetHeight() / meter; |
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} |
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SimFrame::~SimFrame() |
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{ |
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delete update_timer;
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} |
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bool SimFrame::spawnCallback(scoutsim::Spawn::Request &req,
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scoutsim::Spawn::Response &res) |
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{ |
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std::string name = spawnScout(req.name, req.x, req.y, req.theta);
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if (name.empty())
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{ |
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ROS_ERROR("A scout named [%s] already exists", req.name.c_str());
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return false; |
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} |
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res.name = name; |
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return true; |
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} |
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bool SimFrame::killCallback(scoutsim::Kill::Request& req,
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scoutsim::Kill::Response&) |
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{ |
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M_Scout::iterator it = scouts.find(req.name); |
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if (it == scouts.end())
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{ |
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ROS_ERROR("Tried to kill scout [%s], which does not exist",
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req.name.c_str()); |
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return false; |
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} |
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scouts.erase(it); |
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return true; |
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} |
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bool SimFrame::hasScout(const std::string& name) |
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{ |
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return scouts.find(name) != scouts.end();
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} |
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std::string SimFrame::spawnScout(const std::string& name, |
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float x, float y, float angle) |
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{ |
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std::string real_name = name;
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if (real_name.empty())
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{ |
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do
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{ |
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std::stringstream ss; |
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ss << "scout" << ++id_counter;
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real_name = ss.str(); |
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} while (hasScout(real_name));
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} |
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else
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{ |
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if (hasScout(real_name))
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{ |
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return ""; |
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} |
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} |
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wxImage scout_image; |
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// Try to load a name-specific image; if not, load the default scout
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string specific_name = images_path + name + ".png"; |
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if (fileExists(specific_name))
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{ |
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scout_image.LoadFile(wxString::FromAscii(specific_name.c_str())); |
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scout_image.SetMask(true);
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scout_image.SetMaskColour(255, 255, 255); |
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} |
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else
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{ |
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scout_image.LoadFile( |
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wxString::FromAscii((images_path + "scout.png").c_str()));
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scout_image.SetMask(true);
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scout_image.SetMaskColour(255, 255, 255); |
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} |
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ScoutPtr t(new Scout(ros::NodeHandle(real_name),
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scout_image, Vector2(x, y), &path_bitmap, angle)); |
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scouts[real_name] = t; |
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ROS_INFO("Spawning scout [%s] at x=[%f], y=[%f], theta=[%f]",
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real_name.c_str(), x, y, angle); |
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return real_name;
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} |
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void SimFrame::onQuit(wxCommandEvent& WXUNUSED(event))
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{ |
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Close(true);
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} |
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void SimFrame::onAbout(wxCommandEvent& WXUNUSED(event))
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{ |
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wxMessageBox(_("Scoutsim is the simulator the Colony Project's scout robot.\n"
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"\nThe Colony Project is a part of the Carnegie Mellon\n"
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"Robotics Club. Our goal is to use cooperative low-cost\n"
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"robots to solve challenging problems."),
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_("About Scoutsim"),
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wxOK | wxICON_INFORMATION, this );
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} |
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void SimFrame::onClear(wxCommandEvent& WXUNUSED(event))
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{ |
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clear(); |
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} |
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void SimFrame::showSonar(wxCommandEvent& WXUNUSED(event))
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{ |
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sonar_on = not sonar_on;
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clear(); |
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} |
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void SimFrame::showMap(wxCommandEvent& WXUNUSED(event))
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{ |
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display_map_name = map_base_name; |
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clear(); |
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} |
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void SimFrame::showLines(wxCommandEvent& WXUNUSED(event))
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{ |
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display_map_name = map_lines_name; |
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clear(); |
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} |
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void SimFrame::showWalls(wxCommandEvent& WXUNUSED(event))
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{ |
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display_map_name = map_walls_name; |
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clear(); |
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} |
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void SimFrame::clear()
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{ |
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path_dc.SetBackground(wxBrush(wxColour(100, 100, 100))); |
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path_dc.Clear(); |
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sonar_dc.SetBackground(wxBrush(wxColour(255, 0, 0))); |
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sonar_dc.Clear(); |
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sonar_dc.SelectObject(path_bitmap); |
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path_bitmap.LoadFile(wxString::FromAscii(display_map_name.c_str())); |
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path_dc.SelectObject(path_bitmap); |
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SetSize(wxSize(path_bitmap.GetWidth(), path_bitmap.GetHeight())); |
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} |
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void SimFrame::onUpdate(wxTimerEvent& evt)
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{ |
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ros::spinOnce(); |
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teleop(); |
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updateScouts(); |
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if (!ros::ok())
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{ |
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Close(); |
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} |
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} |
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void SimFrame::onPaint(wxPaintEvent& evt)
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{ |
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wxPaintDC dc(this);
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dc.DrawBitmap(path_bitmap, 0, 0, true); |
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M_Scout::iterator it = scouts.begin(); |
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M_Scout::iterator end = scouts.end(); |
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for (; it != end; ++it)
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{ |
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it->second->paint(dc); |
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} |
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} |
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bool SimFrame::fileExists(const std::string& filename) |
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{ |
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struct stat buf;
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if (stat(filename.c_str(), &buf) != -1) |
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{ |
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return true; |
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} |
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return false; |
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} |
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void SimFrame::stopTeleop(wxCommandEvent& event)
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{ |
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teleop_type = TELEOP_OFF; |
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teleop_l_speed = 0;
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teleop_r_speed = 0;
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} |
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void SimFrame::startTeleopPrecise(wxCommandEvent& event)
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{ |
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teleop_type = TELEOP_PRECISE; |
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teleop_l_speed = 0;
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teleop_r_speed = 0;
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} |
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void SimFrame::startTeleopFluid(wxCommandEvent& event)
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{ |
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teleop_type = TELEOP_FLUID; |
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teleop_l_speed = 0;
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teleop_r_speed = 0;
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teleop_fluid_speed = 0;
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teleop_fluid_omega = 0;
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} |
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void SimFrame::teleop_move_precise()
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{ |
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// Default to stop
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teleop_l_speed = 0;
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teleop_r_speed = 0;
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if (wxGetKeyState(WXK_UP))
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{ |
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teleop_l_speed = TELEOP_PRECISE_SPEED; |
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teleop_r_speed = TELEOP_PRECISE_SPEED; |
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} |
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else if (wxGetKeyState(WXK_DOWN)) |
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{ |
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teleop_l_speed = -TELEOP_PRECISE_SPEED; |
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teleop_r_speed = -TELEOP_PRECISE_SPEED; |
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} |
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else if (wxGetKeyState(WXK_LEFT)) |
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{ |
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teleop_l_speed = -TELEOP_PRECISE_SPEED; |
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teleop_r_speed = TELEOP_PRECISE_SPEED; |
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} |
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else if (wxGetKeyState(WXK_RIGHT)) |
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{ |
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teleop_l_speed = TELEOP_PRECISE_SPEED; |
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teleop_r_speed = -TELEOP_PRECISE_SPEED; |
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} |
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} |
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void SimFrame::teleop_move_fluid()
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{ |
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if (wxGetKeyState(WXK_UP))
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{ |
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teleop_fluid_speed += 2;
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} |
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else if (wxGetKeyState(WXK_DOWN)) |
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{ |
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teleop_fluid_speed -= 2;
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} |
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else if (teleop_fluid_speed > 0) |
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{ |
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teleop_fluid_speed -= 1;
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} |
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else if (teleop_fluid_speed < 0) |
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{ |
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teleop_fluid_speed += 1;
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} |
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if (wxGetKeyState(WXK_LEFT))
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{ |
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teleop_fluid_omega -= 1;
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} |
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else if (wxGetKeyState(WXK_RIGHT)) |
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{ |
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teleop_fluid_omega += 1;
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} |
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else
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{ |
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teleop_fluid_omega = 0;
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} |
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|
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if (teleop_fluid_speed > TELEOP_FLUID_MAX_SPEED)
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{ |
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teleop_fluid_speed = TELEOP_FLUID_MAX_SPEED; |
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} |
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if (teleop_fluid_omega > TELEOP_FLUID_MAX_SPEED / 2) |
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{ |
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teleop_fluid_omega = TELEOP_FLUID_MAX_SPEED / 2;
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} |
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|
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teleop_l_speed = teleop_fluid_speed + teleop_fluid_omega; |
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teleop_r_speed = teleop_fluid_speed - teleop_fluid_omega; |
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} |
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|
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void SimFrame::teleop()
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{ |
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switch (teleop_type)
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{ |
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case TELEOP_OFF:
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return;
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case TELEOP_PRECISE:
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teleop_move_precise(); |
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break;
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case TELEOP_FLUID:
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teleop_move_fluid(); |
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break;
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} |
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|
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motors::set_motors msg; |
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msg.fl_set = true;
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msg.fr_set = true;
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msg.bl_set = true;
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msg.br_set = true;
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|
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msg.fl_speed = teleop_l_speed; |
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msg.fr_speed = teleop_r_speed; |
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msg.bl_speed = teleop_l_speed; |
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msg.br_speed = teleop_r_speed; |
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teleop_pub.publish(msg); |
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} |
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|
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void SimFrame::updateScouts()
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{ |
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if (last_scout_update.isZero())
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{ |
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last_scout_update = ros::WallTime::now(); |
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return;
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} |
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|
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if (frame_count % 3 == 0) |
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{ |
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path_image = path_bitmap.ConvertToImage(); |
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Refresh(); |
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} |
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|
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M_Scout::iterator it = scouts.begin(); |
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M_Scout::iterator end = scouts.end(); |
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|
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world_state state; |
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state.canvas_width = width_in_meters; |
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state.canvas_height = height_in_meters; |
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|
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for (; it != end; ++it)
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{ |
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it->second->update(0.016, path_dc,sonar_dc,sonar_on, |
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path_image, lines_image, walls_image, |
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path_dc.GetBackground().GetColour(), |
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sonar_dc.GetBackground().GetColour(), |
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state); |
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} |
508 |
|
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frame_count++; |
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} |
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|
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bool SimFrame::clearCallback(std_srvs::Empty::Request&,
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std_srvs::Empty::Response&) |
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{ |
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ROS_INFO("Clearing scoutsim.");
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clear(); |
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return true; |
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} |
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|
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bool SimFrame::resetCallback(std_srvs::Empty::Request&,
|
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std_srvs::Empty::Response&) |
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{ |
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ROS_INFO("Resetting scoutsim.");
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scouts.clear(); |
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id_counter = 0;
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spawnScout("", width_in_meters / 2.0, height_in_meters / 2.0, 0); |
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clear(); |
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return true; |
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} |
530 |
|
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void SimFrame::wirelessCallback(const ::messages::WirelessPacket::ConstPtr& msg) |
532 |
{ |
533 |
wireless_receive.publish(msg); |
534 |
} |
535 |
} |