scoutos / scout / scoutsim / src / sim_frame.cpp @ dec96050
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1 | 266ae7f2 | Alex Zirbel | /*
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2 | * This package was developed by the CMU Robotics Club project using code
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3 | * from Willow Garage, Inc. Please see licensing.txt for details.
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4 | *
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5 | * All rights reserved.
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6 | *
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7 | * @brief Keeps track of the frame (visualization of the whole environment).
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8 | * @file sim_frame.cpp
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9 | * @author Colony Project, CMU Robotics Club
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10 | * @author Alex Zirbel
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11 | */
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12 | |||
13 | #include "scoutsim/sim_frame.h" |
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14 | |||
15 | #include <ros/package.h> |
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16 | #include <cstdlib> |
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17 | #include <ctime> |
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18 | |||
19 | #define DEFAULT_BG_R 0x45 |
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20 | #define DEFAULT_BG_G 0x56 |
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21 | #define DEFAULT_BG_B 0xff |
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22 | |||
23 | namespace scoutsim
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24 | { |
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25 | |||
26 | SimFrame::SimFrame(wxWindow* parent) |
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27 | : wxFrame(parent, wxID_ANY, wxT("ScoutSim"), wxDefaultPosition,
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28 | wxSize(500, 500), wxDEFAULT_FRAME_STYLE & ~wxRESIZE_BORDER) |
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29 | , frame_count_(0)
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30 | , id_counter_(0)
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31 | { |
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32 | srand(time(NULL));
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33 | |||
34 | update_timer_ = new wxTimer(this); |
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35 | update_timer_->Start(16);
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36 | |||
37 | Connect(update_timer_->GetId(), wxEVT_TIMER, |
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38 | wxTimerEventHandler(SimFrame::onUpdate), NULL, this); |
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39 | Connect(wxEVT_PAINT, wxPaintEventHandler(SimFrame::onPaint), |
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40 | NULL, this); |
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41 | |||
42 | nh_.setParam("background_r", DEFAULT_BG_R);
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43 | nh_.setParam("background_g", DEFAULT_BG_G);
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44 | nh_.setParam("background_b", DEFAULT_BG_B);
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45 | |||
46 | std::string scouts[SCOUTSIM_NUM_SCOUTS] =
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47 | { |
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48 | dec96050 | Priya | "scout.png"
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49 | "scout_forreal.png"
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50 | 266ae7f2 | Alex Zirbel | }; |
51 | |||
52 | std::string images_path = ros::package::getPath("scoutsim")+"/images/"; |
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53 | for (size_t i = 0; i < SCOUTSIM_NUM_SCOUTS; ++i) |
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54 | { |
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55 | scout_images_[i].LoadFile( |
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56 | wxString::FromAscii((images_path + scouts[i]).c_str())); |
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57 | scout_images_[i].SetMask(true);
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58 | scout_images_[i].SetMaskColour(255, 255, 255); |
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59 | } |
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60 | |||
61 | meter_ = scout_images_[0].GetHeight();
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62 | |||
63 | path_bitmap_ = wxBitmap(GetSize().GetWidth(), GetSize().GetHeight()); |
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64 | path_dc_.SelectObject(path_bitmap_); |
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65 | clear(); |
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66 | |||
67 | clear_srv_ = nh_.advertiseService("clear",
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68 | &SimFrame::clearCallback, this);
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69 | reset_srv_ = nh_.advertiseService("reset",
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70 | &SimFrame::resetCallback, this);
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71 | spawn_srv_ = nh_.advertiseService("spawn",
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72 | &SimFrame::spawnCallback, this);
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73 | kill_srv_ = nh_.advertiseService("kill",
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74 | &SimFrame::killCallback, this);
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75 | |||
76 | ROS_INFO("Starting scoutsim with node name %s",
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77 | ros::this_node::getName().c_str()) ; |
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78 | |||
79 | width_in_meters_ = GetSize().GetWidth() / meter_; |
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80 | height_in_meters_ = GetSize().GetHeight() / meter_; |
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81 | spawnScout("", width_in_meters_ / 2.0, height_in_meters_ / 2.0, 0); |
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82 | } |
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83 | |||
84 | SimFrame::~SimFrame() |
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85 | { |
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86 | delete update_timer_;
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87 | } |
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88 | |||
89 | bool SimFrame::spawnCallback(scoutsim::Spawn::Request& req,
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90 | scoutsim::Spawn::Response& res) |
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91 | { |
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92 | std::string name = spawnScout(req.name, req.x, req.y, req.theta);
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93 | if (name.empty())
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94 | { |
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95 | ROS_ERROR("A scout named [%s] already exists", req.name.c_str());
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96 | return false; |
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97 | } |
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98 | |||
99 | res.name = name; |
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100 | |||
101 | return true; |
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102 | } |
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103 | |||
104 | bool SimFrame::killCallback(scoutsim::Kill::Request& req,
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105 | scoutsim::Kill::Response&) |
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106 | { |
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107 | M_Scout::iterator it = scouts_.find(req.name); |
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108 | if (it == scouts_.end())
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109 | { |
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110 | ROS_ERROR("Tried to kill scout [%s], which does not exist",
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111 | req.name.c_str()); |
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112 | return false; |
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113 | } |
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114 | |||
115 | scouts_.erase(it); |
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116 | |||
117 | return true; |
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118 | } |
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119 | |||
120 | bool SimFrame::hasScout(const std::string& name) |
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121 | { |
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122 | return scouts_.find(name) != scouts_.end();
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123 | } |
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124 | |||
125 | std::string SimFrame::spawnScout(const std::string& name, float x, |
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126 | float y, float angle) |
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127 | { |
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128 | std::string real_name = name;
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129 | if (real_name.empty())
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130 | { |
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131 | do
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132 | { |
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133 | std::stringstream ss; |
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134 | ss << "scout" << ++id_counter_;
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135 | real_name = ss.str(); |
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136 | } while (hasScout(real_name));
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137 | } |
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138 | else
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139 | { |
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140 | if (hasScout(real_name))
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141 | { |
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142 | return ""; |
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143 | } |
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144 | } |
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145 | |||
146 | ScoutPtr t(new Scout(ros::NodeHandle(real_name),
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147 | scout_images_[rand() % SCOUTSIM_NUM_SCOUTS], |
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148 | Vector2(x, y), angle)); |
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149 | scouts_[real_name] = t; |
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150 | |||
151 | ROS_INFO("Spawning scout [%s] at x=[%f], y=[%f], theta=[%f]",
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152 | real_name.c_str(), x, y, angle); |
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153 | |||
154 | return real_name;
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155 | } |
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156 | |||
157 | void SimFrame::clear()
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158 | { |
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159 | int r = DEFAULT_BG_R;
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160 | int g = DEFAULT_BG_G;
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161 | int b = DEFAULT_BG_B;
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162 | |||
163 | nh_.param("background_r", r, r);
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164 | nh_.param("background_g", g, g);
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165 | nh_.param("background_b", b, b);
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166 | |||
167 | path_dc_.SetBackground(wxBrush(wxColour(r, g, b))); |
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168 | path_dc_.Clear(); |
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169 | } |
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170 | |||
171 | void SimFrame::onUpdate(wxTimerEvent& evt)
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172 | { |
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173 | ros::spinOnce(); |
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174 | |||
175 | updateScouts(); |
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176 | |||
177 | if (!ros::ok())
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178 | { |
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179 | Close(); |
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180 | } |
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181 | } |
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182 | |||
183 | void SimFrame::onPaint(wxPaintEvent& evt)
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184 | { |
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185 | wxPaintDC dc(this);
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186 | |||
187 | dc.DrawBitmap(path_bitmap_, 0, 0, true); |
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188 | |||
189 | M_Scout::iterator it = scouts_.begin(); |
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190 | M_Scout::iterator end = scouts_.end(); |
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191 | for (; it != end; ++it)
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192 | { |
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193 | it->second->paint(dc); |
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194 | } |
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195 | } |
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196 | |||
197 | void SimFrame::updateScouts()
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198 | { |
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199 | if (last_scout_update_.isZero())
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200 | { |
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201 | last_scout_update_ = ros::WallTime::now(); |
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202 | return;
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203 | } |
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204 | |||
205 | if (frame_count_ % 3 == 0) |
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206 | { |
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207 | path_image_ = path_bitmap_.ConvertToImage(); |
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208 | Refresh(); |
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209 | } |
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210 | |||
211 | M_Scout::iterator it = scouts_.begin(); |
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212 | M_Scout::iterator end = scouts_.end(); |
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213 | for (; it != end; ++it)
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214 | { |
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215 | it->second->update(0.016, path_dc_, path_image_, |
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216 | path_dc_.GetBackground().GetColour(), |
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217 | width_in_meters_, height_in_meters_); |
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218 | } |
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219 | |||
220 | ++frame_count_; |
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221 | } |
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222 | |||
223 | |||
224 | bool SimFrame::clearCallback(std_srvs::Empty::Request&,
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225 | std_srvs::Empty::Response&) |
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226 | { |
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227 | ROS_INFO("Clearing scoutsim.");
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228 | clear(); |
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229 | return true; |
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230 | } |
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231 | |||
232 | bool SimFrame::resetCallback(std_srvs::Empty::Request&,
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233 | std_srvs::Empty::Response&) |
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234 | { |
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235 | ROS_INFO("Resetting scoutsim.");
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236 | scouts_.clear(); |
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237 | id_counter_ = 0;
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238 | spawnScout("", width_in_meters_ / 2.0, height_in_meters_ / 2.0, 0); |
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239 | clear(); |
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240 | return true; |
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241 | } |
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242 | |||
243 | } |