source/engineer/engineer.cpp

   1 #include <algorithm>
   2 #include <cmath>
   3 #include <cstdlib>
   4 #include <limits>
   5 #include <signal.h>
   6 #include <msp/fs/stat.h>
   7 #include <msp/fs/utils.h>
   8 #include <msp/graphics/display.h>
   9 #include <msp/graphics/window.h>
  10 #include <msp/gl/blend.h>
  11 #include <msp/gl/framebuffer.h>
  12 #include <msp/gl/matrix.h>
  13 #include <msp/gl/misc.h>
  14 #include <msp/gl/tests.h>
  15 #include <msp/gltk/floatingarrangement.h>
  16 #include <msp/io/print.h>
  17 #include <msp/strings/format.h>
  18 #include <msp/time/units.h>
  19 #include <msp/time/utils.h>
  20 #include "libr2c2/driver.h"
  21 #include "libr2c2/trackcircuit.h"
  22 #include "libr2c2/tracktype.h"
  23 #include "3d/allocation.h"
  24 #include "3d/path.h"
  25 #include "3d/track.h"
  26 #include "3d/trackcircuit.h"
  27 #include "3d/vehicle.h"
  28 #include "engineer.h"
  29 #include "mainwindow.h"
  30 #include "traindialog.h"
  31 #include "trainview.h"
  32
  33 using namespace std;
  34 using namespace R2C2;
  35 using namespace Msp;
  36
  37 Engineer::Engineer(int argc, char **argv):
  38         options(argc, argv),
  39         window(options.screen_w, options.screen_h, options.fullscreen),
  40         keyboard(window),
  41         mouse(window),
  42         ui_res("r2c2.res"),
  43         layout(catalogue, (options.driver.empty() ? 0 : Driver::create(options.driver))),
  44         layout_3d(layout),
  45         server(0),
  46         main_view(layout_3d, window.get_width(), window.get_height())
  47 {
  48         // Setup GUI
  49         window.set_title("Railroad Engineer");
  50         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  51
  52         root = new GLtk::Root(ui_res, &window, &keyboard, &mouse);
  53         GLtk::Layout *root_layout = new GLtk::Layout;
  54         root->set_layout(root_layout);
  55         root_layout->set_margin(GLtk::Sides());
  56         root_arrangement = new GLtk::FloatingArrangement(*root_layout);
  57         mouse.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &Engineer::button_press), false));
  58         mouse.signal_axis_motion.connect(sigc::bind_return(sigc::mem_fun(this, &Engineer::axis_motion), false));
  59         root->set_visible(true);
  60
  61         main_wnd = new MainWindow(*this);
  62         root->add(*main_wnd);
  63         main_wnd->autosize();
  64         main_wnd->set_position(0, window.get_height()-main_wnd->get_geometry().h);
  65
  66         overlay = new Overlay3D(ui_res.get_default_font());
  67
  68         // Setup railroad control
  69         DataFile::load(catalogue, "tracks.dat");
  70         DataFile::load(catalogue, "locos.dat");
  71         DataFile::load(catalogue, "wagons.dat");
  72         DataFile::load(layout, options.layout_fn);
  73
  74         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  75         layout.signal_emergency.connect(sigc::mem_fun(this, &Engineer::set_status));
  76         const set<Block *> &blocks = layout.get_all<Block>();
  77         for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
  78                 if(TrackCircuit *tc = (*i)->get_sensor())
  79                         new TrackCircuit3D(layout_3d, *tc);
  80
  81         const set<Track *> &tracks = layout.get_all<Track>();
  82         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
  83                 if((*i)->get_type().is_turnout())
  84                         new Path3D(layout_3d.get_3d(**i));
  85
  86         if(FS::exists(options.state_fn))
  87                 DataFile::load(layout, options.state_fn);
  88
  89         if(options.network)
  90         {
  91                 server = new Server(layout);
  92                 server->use_event_dispatcher(event_disp);
  93         }
  94
  95         // Setup 3D view
  96         GL::Pipeline &pipeline = main_view.get_pipeline();
  97
  98         GL::Pipeline::Pass *pass = &pipeline.add_pass("unlit");
  99         pass->set_depth_test(&GL::DepthTest::lequal());
 100         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
 101
 102         pass = &pipeline.add_pass("overlay");
 103         pass->set_blend(&GL::Blend::alpha());
 104         pipeline.add_renderable_for_pass(*overlay, "overlay");
 105
 106         view_all();
 107
 108         // Catch various signals so we can stop the trains in case we get terminated
 109         catch_signal(SIGINT);
 110         catch_signal(SIGTERM);
 111         catch_signal(SIGSEGV);
 112         catch_signal(SIGILL);
 113         catch_signal(SIGFPE);
 114         catch_signal(SIGABRT);
 115 }
 116
 117 Engineer::~Engineer()
 118 {
 119         const map<unsigned, Train *> &trains = layout.get_trains();
 120         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 121                 layout.get_driver().set_loco_speed(i->first, 0);
 122         layout.get_driver().flush();
 123
 124         if(!options.simulate)
 125         {
 126                 layout.save_dynamic(options.state_fn+".tmp");
 127                 FS::rename(options.state_fn+".tmp", options.state_fn);
 128         }
 129
 130         delete overlay;
 131         delete root_arrangement;
 132         delete root;
 133
 134         delete server;
 135 }
 136
 137 void Engineer::set_status(const string &text)
 138 {
 139         main_wnd->set_status_text(text);
 140         status_timeout = Time::now()+10*Time::sec;
 141 }
 142
 143 void Engineer::add_train_view(TrainView &tv)
 144 {
 145         train_views.push_back(&tv);
 146 }
 147
 148 void Engineer::remove_train_view(TrainView &tv)
 149 {
 150         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 151 }
 152
 153 int Engineer::main()
 154 {
 155         window.show();
 156
 157         return Application::main();
 158 }
 159
 160 void Engineer::tick()
 161 {
 162         window.get_display().tick();
 163
 164         for(list<Train *>::iterator i=new_trains.begin(); i!=new_trains.end(); ++i)
 165                 process_new_train(**i);
 166         new_trains.clear();
 167
 168         layout.tick();
 169         event_disp.tick(Time::zero);
 170
 171         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 172                 (*i)->prepare();
 173
 174         if(status_timeout && Time::now()>status_timeout)
 175         {
 176                 main_wnd->set_status_text(string());
 177                 status_timeout = Time::TimeStamp();
 178         }
 179
 180         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 181
 182         main_view.render();
 183
 184         root->render();
 185
 186         window.swap_buffers();
 187 }
 188
 189 void Engineer::button_press(unsigned btn)
 190 {
 191         if(btn==1)
 192         {
 193                 Object *obj = pick_object(pointer);
 194                 if(Track *track = dynamic_cast<Track *>(obj))
 195                 {
 196                         if(track->get_turnout_address())
 197                         {
 198                                 Block &block = track->get_block();
 199                                 if(block.get_train() && block.get_train()->is_block_critical(block))
 200                                         set_status("Turnout is busy");
 201                                 else
 202                                 {
 203                                         unsigned paths = track->get_type().get_paths();
 204                                         unsigned i = track->get_active_path()+1;
 205                                         while(!(paths&(1<<i)))
 206                                         {
 207                                                 if(!(paths>>i))
 208                                                         i = 0;
 209                                                 else
 210                                                         ++i;
 211                                         }
 212                                         track->set_active_path(i);
 213                                         set_status(format("Turnout %d", track->get_turnout_address()));
 214                                 }
 215                         }
 216                         if(unsigned saddr = track->get_sensor_address())
 217                         {
 218                                 if(options.simulate)
 219                                         layout.get_driver().set_sensor(saddr, !layout.get_driver().get_sensor(saddr));
 220                                 set_status(format("Sensor %d", saddr));
 221                         }
 222                 }
 223                 else if(Vehicle *veh = dynamic_cast<Vehicle *>(obj))
 224                 {
 225                         TrainDialog *dlg = new TrainDialog(*this, *veh->get_train());
 226                         root->add(*dlg);
 227                         dlg->autosize();
 228                 }
 229         }
 230 }
 231
 232 void Engineer::axis_motion(unsigned axis, float value, float)
 233 {
 234         if(axis==0)
 235                 pointer.x = value;
 236         if(axis==1)
 237                 pointer.y = value;
 238 }
 239
 240 void Engineer::view_all()
 241 {
 242         const Layout3D::ObjectMap &objects = layout_3d.get_all();
 243
 244         float view_aspect = float(window.get_width())/window.get_height();
 245         float view_height = tan(main_view.get_camera().get_field_of_view()/2.0f)*2.0f;
 246         float best_score = 0;
 247         GL::Vector3 pos;
 248         GL::Vector3 up;
 249         for(Angle angle; angle<Angle::half_turn(); angle+=Angle::from_radians(0.01))
 250         {
 251                 Transform trans = Transform::rotation(-angle, Vector(0, 0, 1));
 252                 BoundingBox bbox;
 253                 for(Layout3D::ObjectMap::const_iterator i=objects.begin(); i!=objects.end(); ++i)
 254                         bbox = bbox|trans.transform(i->second->get_object().get_bounding_box());
 255
 256                 const Vector &minp = bbox.get_minimum_point();
 257                 const Vector &maxp = bbox.get_maximum_point();
 258
 259                 float width = maxp.x-minp.x;
 260                 float height = maxp.y-minp.y;
 261                 float aspect = width/height;
 262                 float score = min(aspect/view_aspect, view_aspect/aspect);
 263
 264                 if(score>best_score)
 265                 {
 266                         best_score = score;
 267
 268                         float size = max(width/view_aspect, height);
 269                         float c = cos(angle);
 270                         float s = sin(angle);
 271                         float x = (minp.x+maxp.x)/2;
 272                         float y = (minp.y+maxp.y)/2;
 273                         float z = max(size*1.05/view_height, 0.15);
 274
 275                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 276                         up = GL::Vector3(-s, c, 0);
 277                 }
 278         }
 279
 280         GL::Camera &camera = main_view.get_camera();
 281         camera.set_position(pos);
 282         camera.set_up_direction(up);
 283         camera.set_look_direction(GL::Vector3(0, 0, -1));
 284         camera.set_aspect(float(window.get_width())/window.get_height());
 285         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 286 }
 287
 288 Object *Engineer::pick_object(const Vector &p)
 289 {
 290         const GL::Vector3 &start = main_view.get_camera().get_position();
 291         GL::Vector4 ray = main_view.get_camera().unproject(GL::Vector4(p.x, p.y, 0, 0));
 292
 293         // XXX Do this better; make this function a template?
 294         if(Vehicle *veh = layout.pick<Vehicle>(Ray(start, Vector(ray))))
 295                 return veh;
 296         return layout.pick<Track>(Ray(start, Vector(ray)));
 297 }
 298
 299 void Engineer::process_new_train(Train &train)
 300 {
 301         Vehicle3D &loco3d = layout_3d.get_3d(train.get_vehicle(0));
 302         overlay->set_label(loco3d, train.get_name());
 303         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 304 }
 305
 306 void Engineer::train_added(Train &train)
 307 {
 308         new_trains.push_back(&train);
 309
 310         GL::Color best_color;
 311         float best_d_sq = 0;
 312         for(unsigned i=0; i<10; ++i)
 313         {
 314                 GL::Color color;
 315                 unsigned h = rand()%3;
 316                 color.r = (h==0 ? 0.0 : rand()*1.0/RAND_MAX);
 317                 color.g = (h==1 ? 0.0 : rand()*1.0/RAND_MAX);
 318                 color.b = (h==2 ? 0.0 : rand()*1.0/RAND_MAX);
 319                 color = color*(1/max(max(color.r, color.g), color.b));
 320                 float min_d_sq = 3;
 321                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 322                 {
 323                         float dr = color.r-j->second.r;
 324                         float dg = color.g-j->second.g;
 325                         float db = color.b-j->second.b;
 326                         float d_sq = dr*dr+dg*dg+db*db;
 327                         if(d_sq<min_d_sq)
 328                                 min_d_sq = d_sq;
 329                 }
 330                 if(min_d_sq>best_d_sq)
 331                 {
 332                         best_color = color;
 333                         best_d_sq = min_d_sq;
 334                 }
 335         }
 336         train_colors[&train] = best_color;
 337
 338         Allocation3D *alloc = new Allocation3D(layout_3d, train);
 339         alloc->set_color(best_color);
 340 }
 341
 342 void Engineer::sighandler(int sig)
 343 {
 344         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 345         {
 346                 signal(sig, SIG_DFL);
 347                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 348                 const map<unsigned, Train *> &trains = layout.get_trains();
 349                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 350                         layout.get_driver().set_loco_speed(i->first, 0);
 351                 layout.get_driver().flush();
 352                 raise(sig);
 353         }
 354         else if(sig==SIGTERM || sig==SIGINT)
 355                 exit(0);
 356 }