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/io/print.h>
  16 #include <msp/strings/format.h>
  17 #include <msp/time/units.h>
  18 #include <msp/time/utils.h>
  19 #include "libr2c2/driver.h"
  20 #include "libr2c2/trackcircuit.h"
  21 #include "libr2c2/tracktype.h"
  22 #include "3d/allocation.h"
  23 #include "3d/path.h"
  24 #include "3d/track.h"
  25 #include "3d/trackcircuit.h"
  26 #include "3d/vehicle.h"
  27 #include "engineer.h"
  28 #include "mainwindow.h"
  29 #include "traindialog.h"
  30 #include "trainview.h"
  31
  32 using namespace std;
  33 using namespace R2C2;
  34 using namespace Msp;
  35
  36 Engineer::Engineer(int argc, char **argv):
  37         options(argc, argv),
  38         window(options.screen_w, options.screen_h, options.fullscreen),
  39         keyboard(window),
  40         mouse(window),
  41         ui_res("r2c2.res"),
  42         layout(catalogue, (options.driver.empty() ? 0 : Driver::create(options.driver))),
  43         layout_3d(layout),
  44         server(0),
  45         pipeline(window.get_width(), window.get_height(), false),
  46         picking(false),
  47         picking_track(0),
  48         picking_entry(0),
  49         picking_path(0),
  50         pointer_moved(false)
  51 {
  52         // Setup GUI
  53         window.set_title("Railroad Engineer");
  54         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  55
  56         root = new GLtk::Root(ui_res, &window, &keyboard, &mouse);
  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<Track3D>(**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         DataFile::load(arrow_mesh, "arrow.mesh");
  97
  98         pipeline.set_camera(&camera);
  99         pipeline.add_renderable_for_pass(layout_3d.get_scene(), 0);
 100         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
 101         pipeline.add_renderable_for_pass(*overlay, "overlay");
 102
 103         light.set_position(GL::Vector4(0, -0.259, 0.966, 0));
 104         light.set_diffuse(GL::Color(0.9));
 105         lighting.set_ambient(GL::Color(0.4));
 106         lighting.attach(0, light);
 107
 108         GL::Pipeline::Pass *pass = &pipeline.add_pass(0);
 109         pass->set_depth_test(&GL::DepthTest::lequal());
 110         pass->set_lighting(&lighting);
 111
 112         pass = &pipeline.add_pass("unlit");
 113         pass->set_depth_test(&GL::DepthTest::lequal());
 114
 115         pass = &pipeline.add_pass("overlay");
 116         pass->set_blend(&GL::Blend::alpha());
 117
 118         view_all();
 119
 120         // Catch various signals so we can stop the trains in case we get terminated
 121         catch_signal(SIGINT);
 122         catch_signal(SIGTERM);
 123         catch_signal(SIGSEGV);
 124         catch_signal(SIGILL);
 125         catch_signal(SIGFPE);
 126         catch_signal(SIGABRT);
 127 }
 128
 129 Engineer::~Engineer()
 130 {
 131         const map<unsigned, Train *> &trains = layout.get_trains();
 132         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 133                 layout.get_driver().set_loco_speed(i->first, 0);
 134         layout.get_driver().flush();
 135
 136         if(!options.simulate)
 137         {
 138                 layout.save_dynamic(options.state_fn+".tmp");
 139                 FS::rename(options.state_fn+".tmp", options.state_fn);
 140         }
 141
 142         delete overlay;
 143         delete root;
 144
 145         delete server;
 146 }
 147
 148 void Engineer::set_status(const string &text)
 149 {
 150         main_wnd->set_status_text(text);
 151         status_timeout = Time::now()+10*Time::sec;
 152 }
 153
 154 void Engineer::add_train_view(TrainView &tv)
 155 {
 156         train_views.push_back(&tv);
 157 }
 158
 159 void Engineer::remove_train_view(TrainView &tv)
 160 {
 161         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 162 }
 163
 164 void Engineer::pick(bool with_ep)
 165 {
 166         picking = true;
 167         picking_track = 0;
 168         picking_entry = (with_ep ? 0 : -1);
 169 }
 170
 171 int Engineer::main()
 172 {
 173         window.show();
 174
 175         return Application::main();
 176 }
 177
 178 void Engineer::tick()
 179 {
 180         window.get_display().tick();
 181
 182         for(list<Train *>::iterator i=new_trains.begin(); i!=new_trains.end(); ++i)
 183                 process_new_train(**i);
 184         new_trains.clear();
 185
 186         layout.tick();
 187         event_disp.tick(Time::zero);
 188
 189         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 190                 (*i)->prepare();
 191
 192         if(status_timeout && Time::now()>status_timeout)
 193         {
 194                 main_wnd->set_status_text(string());
 195                 status_timeout = Time::TimeStamp();
 196         }
 197
 198         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 199
 200         pipeline.render();
 201
 202         if(pointer_moved)
 203         {
 204                 pointer_moved = false;
 205
 206                 if(picking)
 207                 {
 208                         Track *track = dynamic_cast<Track *>(pick_object(pointer));
 209                         if(track && track!=picking_track)
 210                         {
 211                                 picking_track = track;
 212                                 if(picking_entry>=0)
 213                                         picking_entry = 0;
 214
 215                                 delete picking_path;
 216                                 picking_path = new Path3D(layout_3d.get<Track3D>(*track));
 217                                 picking_path->set_color(GL::Color(0));
 218                                 picking_path->set_layer(2);
 219                         }
 220                 }
 221         }
 222
 223         if(picking && picking_track && picking_entry>=0)
 224         {
 225                 camera.apply();
 226                 GL::MatrixStack::Push push_mat(GL::MatrixStack::modelview());
 227
 228                 Snap sn = picking_track->get_snap_node(picking_entry);
 229
 230                 GL::MatrixStack::modelview() *= GL::Matrix::translation(sn.position+GL::Vector3(0, 0, 0.03));
 231                 GL::MatrixStack::modelview() *= GL::Matrix::rotation(sn.rotation+Angle::half_turn(), 0, 0, 1);
 232
 233                 arrow_mesh.draw();
 234         }
 235
 236         root->render();
 237
 238         window.swap_buffers();
 239 }
 240
 241 void Engineer::button_press(unsigned btn)
 242 {
 243         if(picking)
 244         {
 245                 if(btn==1 && picking_track)
 246                 {
 247                         picking = false;
 248                         delete picking_path;
 249                         picking_path = 0;
 250                         signal_pick_done.emit(picking_track, picking_entry);
 251                 }
 252                 else if(btn==3 && picking_entry>=0)
 253                 {
 254                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 255                 }
 256         }
 257         else
 258         {
 259                 Object *obj = pick_object(pointer);
 260                 if(Track *track = dynamic_cast<Track *>(obj))
 261                 {
 262                         if(track->get_turnout_id())
 263                         {
 264                                 Block &block = track->get_block();
 265                                 if(block.get_train() && block.get_train()->is_block_critical(block))
 266                                         set_status("Turnout is busy");
 267                                 else
 268                                 {
 269                                         unsigned paths = track->get_type().get_paths();
 270                                         unsigned i = track->get_active_path()+1;
 271                                         while(!(paths&(1<<i)))
 272                                         {
 273                                                 if(!(paths>>i))
 274                                                         i = 0;
 275                                                 else
 276                                                         ++i;
 277                                         }
 278                                         track->set_active_path(i);
 279                                         set_status(format("Turnout %d", track->get_turnout_id()));
 280                                 }
 281                         }
 282                         if(unsigned sid = track->get_sensor_id())
 283                         {
 284                                 if(options.simulate)
 285                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 286                                 set_status(format("Sensor %d", sid));
 287                         }
 288                 }
 289                 else if(Vehicle *veh = dynamic_cast<Vehicle *>(obj))
 290                 {
 291                         TrainDialog *dlg = new TrainDialog(*this, *veh->get_train());
 292                         root->add(*dlg);
 293                         dlg->autosize();
 294                 }
 295         }
 296 }
 297
 298 void Engineer::axis_motion(unsigned axis, float value, float)
 299 {
 300         if(axis==0)
 301                 pointer.x = value;
 302         if(axis==1)
 303                 pointer.y = value;
 304         pointer_moved = true;
 305 }
 306
 307 void Engineer::view_all()
 308 {
 309         const Layout3D::ObjectMap &objects = layout_3d.get_all();
 310
 311         float view_aspect = float(window.get_width())/window.get_height();
 312         float view_height = tan(camera.get_field_of_view()/2.0f)*2.0f;
 313         float best_score = 0;
 314         GL::Vector3 pos;
 315         GL::Vector3 up;
 316         for(Angle angle; angle<Angle::half_turn(); angle+=Angle::from_radians(0.01))
 317         {
 318                 Transform trans = Transform::rotation(-angle, Vector(0, 0, 1));
 319                 BoundingBox bbox;
 320                 for(Layout3D::ObjectMap::const_iterator i=objects.begin(); i!=objects.end(); ++i)
 321                         bbox = bbox|trans.transform(i->second->get_object().get_bounding_box());
 322
 323                 const Vector &minp = bbox.get_minimum_point();
 324                 const Vector &maxp = bbox.get_maximum_point();
 325
 326                 float width = maxp.x-minp.x;
 327                 float height = maxp.y-minp.y;
 328                 float aspect = width/height;
 329                 float score = min(aspect/view_aspect, view_aspect/aspect);
 330
 331                 if(score>best_score)
 332                 {
 333                         best_score = score;
 334
 335                         float size = max(width/view_aspect, height);
 336                         float c = cos(angle);
 337                         float s = sin(angle);
 338                         float x = (minp.x+maxp.x)/2;
 339                         float y = (minp.y+maxp.y)/2;
 340                         float z = max(size*1.05/view_height, 0.15);
 341
 342                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 343                         up = GL::Vector3(-s, c, 0);
 344                 }
 345         }
 346
 347         camera.set_position(pos);
 348         camera.set_up_direction(up);
 349         camera.set_look_direction(GL::Vector3(0, 0, -1));
 350         camera.set_aspect(float(window.get_width())/window.get_height());
 351         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 352 }
 353
 354 Object *Engineer::pick_object(const Vector &p)
 355 {
 356         const GL::Vector3 &start = camera.get_position();
 357         GL::Vector4 ray = camera.unproject(GL::Vector4(p.x, p.y, 0, 0));
 358
 359         // XXX Do this better; make this function a template?
 360         if(Vehicle *veh = layout.pick<Vehicle>(Ray(start, Vector(ray))))
 361                 return veh;
 362         return layout.pick<Track>(Ray(start, Vector(ray)));
 363 }
 364
 365 void Engineer::process_new_train(Train &train)
 366 {
 367         Vehicle3D &loco3d = layout_3d.get<Vehicle3D>(train.get_vehicle(0));
 368         overlay->set_label(loco3d, train.get_name());
 369         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 370 }
 371
 372 void Engineer::train_added(Train &train)
 373 {
 374         new_trains.push_back(&train);
 375
 376         GL::Color best_color;
 377         float best_d_sq = 0;
 378         for(unsigned i=0; i<10; ++i)
 379         {
 380                 GL::Color color;
 381                 unsigned h = rand()%3;
 382                 color.r = (h==0 ? 0.0 : rand()*1.0/RAND_MAX);
 383                 color.g = (h==1 ? 0.0 : rand()*1.0/RAND_MAX);
 384                 color.b = (h==2 ? 0.0 : rand()*1.0/RAND_MAX);
 385                 color = color*(1/max(max(color.r, color.g), color.b));
 386                 float min_d_sq = 3;
 387                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 388                 {
 389                         float dr = color.r-j->second.r;
 390                         float dg = color.g-j->second.g;
 391                         float db = color.b-j->second.b;
 392                         float d_sq = dr*dr+dg*dg+db*db;
 393                         if(d_sq<min_d_sq)
 394                                 min_d_sq = d_sq;
 395                 }
 396                 if(min_d_sq>best_d_sq)
 397                 {
 398                         best_color = color;
 399                         best_d_sq = min_d_sq;
 400                 }
 401         }
 402         train_colors[&train] = best_color;
 403
 404         Allocation3D *alloc = new Allocation3D(layout_3d, train);
 405         alloc->set_color(best_color);
 406 }
 407
 408 void Engineer::sighandler(int sig)
 409 {
 410         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 411         {
 412                 signal(sig, SIG_DFL);
 413                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 414                 const map<unsigned, Train *> &trains = layout.get_trains();
 415                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 416                         layout.get_driver().set_loco_speed(i->first, 0);
 417                 layout.get_driver().flush();
 418                 raise(sig);
 419         }
 420         else if(sig==SIGTERM || sig==SIGINT)
 421                 exit(0);
 422 }