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/path.h"
  23 #include "3d/track.h"
  24 #include "3d/vehicle.h"
  25 #include "engineer.h"
  26 #include "mainpanel.h"
  27 #include "trainpanel.h"
  28 #include "trainproperties.h"
  29 #include "trainview.h"
  30
  31 using namespace std;
  32 using namespace R2C2;
  33 using namespace Msp;
  34
  35 Engineer::Engineer(int argc, char **argv):
  36         options(argc, argv),
  37         window(options.screen_w, options.screen_h, options.fullscreen),
  38         keyboard(window),
  39         mouse(window),
  40         ui_res("r2c2.res"),
  41         layout(catalogue, (options.driver.empty() ? 0 : Driver::create(options.driver))),
  42         layout_3d(layout),
  43         server(0),
  44         pipeline(window.get_width(), window.get_height(), false),
  45         picking(false),
  46         picking_track(0),
  47         picking_entry(0),
  48         picking_path(0),
  49         pointer_moved(false)
  50 {
  51         // Setup GUI
  52         window.set_title("Railroad Engineer");
  53         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  54
  55         root = new GLtk::Root(ui_res, window);
  56         mouse.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &Engineer::button_press), false));
  57         mouse.signal_axis_motion.connect(sigc::bind_return(sigc::mem_fun(this, &Engineer::axis_motion), false));
  58         root->set_visible(true);
  59
  60         main_panel = new MainPanel(*this);
  61         root->add(*main_panel);
  62         main_panel->set_position(0, window.get_height()-main_panel->get_geometry().h);
  63         main_panel->set_visible(true);
  64
  65         overlay = new Overlay3D(ui_res.get_default_font());
  66
  67         // Setup railroad control
  68         DataFile::load(catalogue, "tracks.dat");
  69         DataFile::load(catalogue, "locos.dat");
  70         DataFile::load(catalogue, "wagons.dat");
  71         DataFile::load(layout, options.layout_fn);
  72
  73         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  74         layout.signal_block_reserved.connect(sigc::hide<1>(sigc::mem_fun(this, &Engineer::reset_block_color)));
  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                 (*i)->get_sensor().signal_state_changed.connect(sigc::hide(sigc::bind(sigc::mem_fun(this, &Engineer::reset_block_color), sigc::ref(**i))));
  79
  80         if(FS::exists(options.state_fn))
  81                 DataFile::load(layout, options.state_fn);
  82
  83         if(options.network)
  84         {
  85                 server = new Server(layout);
  86                 server->use_event_dispatcher(event_disp);
  87         }
  88
  89         // Setup 3D view
  90         DataFile::load(arrow_mesh, "arrow.mesh");
  91
  92         pipeline.set_camera(&camera);
  93         pipeline.add_renderable_for_pass(layout_3d.get_scene(), 0);
  94         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
  95         pipeline.add_renderable_for_pass(*overlay, "overlay");
  96
  97         light.set_position(GL::Vector4(0, -0.259, 0.966, 0));
  98         light.set_diffuse(GL::Color(0.9));
  99         lighting.set_ambient(GL::Color(0.4));
 100         lighting.attach(0, light);
 101
 102         GL::Pipeline::Pass *pass = &pipeline.add_pass(0);
 103         pass->set_depth_test(&GL::DepthTest::lequal());
 104         pass->set_lighting(&lighting);
 105
 106         pass = &pipeline.add_pass("unlit");
 107         pass->set_depth_test(&GL::DepthTest::lequal());
 108
 109         pass = &pipeline.add_pass("overlay");
 110         pass->set_blend(&GL::Blend::alpha());
 111
 112         view_all();
 113
 114         // Catch various signals so we can stop the trains in case we get terminated
 115         catch_signal(SIGINT);
 116         catch_signal(SIGTERM);
 117         catch_signal(SIGSEGV);
 118         catch_signal(SIGILL);
 119         catch_signal(SIGFPE);
 120         catch_signal(SIGABRT);
 121 }
 122
 123 Engineer::~Engineer()
 124 {
 125         const map<unsigned, Train *> &trains = layout.get_trains();
 126         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 127                 layout.get_driver().set_loco_speed(i->first, 0);
 128         layout.get_driver().flush();
 129
 130         if(!options.simulate)
 131         {
 132                 layout.save_dynamic(options.state_fn+".tmp");
 133                 FS::rename(options.state_fn+".tmp", options.state_fn);
 134         }
 135
 136         delete overlay;
 137         delete root;
 138
 139         delete server;
 140 }
 141
 142 void Engineer::set_status(const string &text)
 143 {
 144         main_panel->set_status_text(text);
 145         status_timeout = Time::now()+10*Time::sec;
 146 }
 147
 148 void Engineer::rearrange_panels()
 149 {
 150         int y = main_panel->get_geometry().y;
 151         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 152         {
 153                 y -= (*i)->get_geometry().h;
 154                 (*i)->set_position(0, y);
 155         }
 156 }
 157
 158 void Engineer::add_train_view(TrainView &tv)
 159 {
 160         train_views.push_back(&tv);
 161 }
 162
 163 void Engineer::remove_train_view(TrainView &tv)
 164 {
 165         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 166 }
 167
 168 void Engineer::pick(bool with_ep)
 169 {
 170         picking = true;
 171         picking_track = 0;
 172         picking_entry = (with_ep ? 0 : -1);
 173 }
 174
 175 int Engineer::main()
 176 {
 177         window.show();
 178
 179         return Application::main();
 180 }
 181
 182 void Engineer::tick()
 183 {
 184         window.get_display().tick();
 185
 186         for(list<Train *>::iterator i=new_trains.begin(); i!=new_trains.end(); ++i)
 187                 process_new_train(**i);
 188         new_trains.clear();
 189
 190         layout.tick();
 191         event_disp.tick(Time::zero);
 192
 193         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 194                 (*i)->prepare();
 195
 196         if(status_timeout && Time::now()>status_timeout)
 197         {
 198                 main_panel->set_status_text(string());
 199                 status_timeout = Time::TimeStamp();
 200         }
 201
 202         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 203
 204         pipeline.render();
 205
 206         if(pointer_moved)
 207         {
 208                 pointer_moved = false;
 209
 210                 if(picking)
 211                 {
 212                         Track *track = pick_track(pointer);
 213                         if(track && track!=picking_track)
 214                         {
 215                                 picking_track = track;
 216                                 if(picking_entry>=0)
 217                                         picking_entry = 0;
 218
 219                                 delete picking_path;
 220                                 picking_path = new Path3D(layout_3d.get_track(*track));
 221                                 if(picking_entry>=0)
 222                                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 223                                 else
 224                                         picking_path->set_mask(picking_track->get_type().get_paths());
 225                                 picking_path->set_color(GL::Color(0));
 226                                 picking_path->set_layer(1);
 227                         }
 228                 }
 229         }
 230
 231         if(picking && picking_track && picking_entry>=0)
 232         {
 233                 camera.apply();
 234                 GL::MatrixStack::Push push_mat(GL::MatrixStack::modelview());
 235
 236                 Snap sn = picking_track->get_snap_node(picking_entry);
 237
 238                 GL::MatrixStack::modelview() *= GL::Matrix::translation(sn.position+GL::Vector3(0, 0, 0.03));
 239                 GL::MatrixStack::modelview() *= GL::Matrix::rotation(sn.rotation+Angle::half_turn(), 0, 0, 1);
 240
 241                 arrow_mesh.draw();
 242         }
 243
 244         root->render();
 245
 246         window.swap_buffers();
 247 }
 248
 249 void Engineer::button_press(unsigned btn)
 250 {
 251         if(picking)
 252         {
 253                 if(btn==1 && picking_track)
 254                 {
 255                         picking = false;
 256                         delete picking_path;
 257                         picking_path = 0;
 258                         signal_pick_done.emit(picking_track, picking_entry);
 259                 }
 260                 else if(btn==3 && picking_entry>=0)
 261                 {
 262                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 263                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 264                 }
 265         }
 266         else
 267         {
 268                 Track *track = pick_track(pointer);
 269                 if(track)
 270                 {
 271                         if(track->get_turnout_id())
 272                         {
 273                                 Block &block = track->get_block();
 274                                 if(block.get_train() && block.get_train()->is_block_critical(block))
 275                                         set_status("Turnout is busy");
 276                                 else
 277                                 {
 278                                         unsigned paths = track->get_type().get_paths();
 279                                         unsigned i = track->get_active_path()+1;
 280                                         while(!(paths&(1<<i)))
 281                                         {
 282                                                 if(!(paths>>i))
 283                                                         i = 0;
 284                                                 else
 285                                                         ++i;
 286                                         }
 287                                         track->set_active_path(i);
 288                                         set_status(format("Turnout %d", track->get_turnout_id()));
 289                                 }
 290                         }
 291                         if(unsigned sid = track->get_sensor_id())
 292                         {
 293                                 if(options.simulate)
 294                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 295                                 set_status(format("Sensor %d", sid));
 296                         }
 297                 }
 298         }
 299 }
 300
 301 void Engineer::axis_motion(unsigned axis, float value, float)
 302 {
 303         if(axis==0)
 304                 pointer.x = value;
 305         if(axis==1)
 306                 pointer.y = value;
 307         pointer_moved = true;
 308 }
 309
 310 void Engineer::view_all()
 311 {
 312         const Layout3D::TrackMap &tracks = layout_3d.get_tracks();
 313
 314         float view_aspect = float(window.get_width()-200)/window.get_height();
 315         float view_height = tan(camera.get_field_of_view()/2.0f)*2.0f;
 316         float best_score = 0;
 317         GL::Vector3 pos;
 318         GL::Vector3 up;
 319         for(Angle angle; angle<Angle::half_turn(); angle+=Angle::from_radians(0.01))
 320         {
 321                 Transform trans = Transform::rotation(-angle, Vector(0, 0, 1));
 322                 BoundingBox bbox;
 323                 for(Layout3D::TrackMap::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 324                         bbox = bbox|trans.transform(i->second->get_track().get_bounding_box());
 325
 326                 const Vector &minp = bbox.get_minimum_point();
 327                 const Vector &maxp = bbox.get_maximum_point();
 328
 329                 float width = maxp.x-minp.x;
 330                 float height = maxp.y-minp.y;
 331                 float aspect = width/height;
 332                 float score = min(aspect/view_aspect, view_aspect/aspect);
 333
 334                 if(score>best_score)
 335                 {
 336                         best_score = score;
 337
 338                         float size = max(width/view_aspect, height);
 339                         float c = cos(angle);
 340                         float s = sin(angle);
 341                         float x = (minp.x+maxp.x)/2-size*105/window.get_height();
 342                         float y = (minp.y+maxp.y)/2;
 343                         float z = max(size*1.05/view_height, 0.15);
 344
 345                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 346                         up = GL::Vector3(-s, c, 0);
 347                 }
 348         }
 349
 350         camera.set_position(pos);
 351         camera.set_up_direction(up);
 352         camera.set_look_direction(GL::Vector3(0, 0, -1));
 353         camera.set_aspect(float(window.get_width())/window.get_height());
 354         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 355 }
 356
 357 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 358 {
 359         const set<Track *> &tracks = block.get_tracks();
 360         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 361                 layout_3d.get_track(**i).get_path().set_color(color);
 362 }
 363
 364 void Engineer::reset_block_color(const Block &block)
 365 {
 366         bool active = block.get_sensor().get_state()>Sensor::INACTIVE;
 367
 368         if(block.get_train())
 369         {
 370                 GL::Color color;
 371                 map<Train *, GL::Color>::iterator i = train_colors.find(block.get_train());
 372                 if(i!=train_colors.end())
 373                         color = i->second;
 374
 375                 if(active)
 376                         set_block_color(block, color*0.6);
 377                 else
 378                         set_block_color(block, color*0.5+0.5);
 379         }
 380         else if(active)
 381                 set_block_color(block, GL::Color(0.6));
 382         else
 383                 set_block_color(block, GL::Color(1));
 384 }
 385
 386 Track *Engineer::pick_track(const Vector &p)
 387 {
 388         const GL::Vector3 &start = camera.get_position();
 389         GL::Vector4 ray = camera.unproject(GL::Vector4(p.x, p.y, 0, 0));
 390
 391         return layout.pick<Track>(Ray(start, Vector(ray)));
 392 }
 393
 394 void Engineer::process_new_train(Train &train)
 395 {
 396         TrainPanel *tpanel = new TrainPanel(*this, train);
 397         root->add(*tpanel);
 398         train_panels.push_back(tpanel);
 399         rearrange_panels();
 400
 401         Vehicle3D &loco3d = layout_3d.get_vehicle(train.get_vehicle(0));
 402         overlay->set_label(loco3d, train.get_name());
 403         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 404 }
 405
 406 void Engineer::train_added(Train &train)
 407 {
 408         new_trains.push_back(&train);
 409
 410         GL::Color best_color;
 411         float best_d_sq = 0;
 412         for(unsigned i=0; i<10; ++i)
 413         {
 414                 GL::Color color;
 415                 unsigned h = rand()%3;
 416                 color.r = (h==0 ? 0.0 : rand()*1.0/RAND_MAX);
 417                 color.g = (h==1 ? 0.0 : rand()*1.0/RAND_MAX);
 418                 color.b = (h==2 ? 0.0 : rand()*1.0/RAND_MAX);
 419                 color = color*(1/max(max(color.r, color.g), color.b));
 420                 float min_d_sq = 3;
 421                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 422                 {
 423                         float dr = color.r-j->second.r;
 424                         float dg = color.g-j->second.g;
 425                         float db = color.b-j->second.b;
 426                         float d_sq = dr*dr+dg*dg+db*db;
 427                         if(d_sq<min_d_sq)
 428                                 min_d_sq = d_sq;
 429                 }
 430                 if(min_d_sq>best_d_sq)
 431                 {
 432                         best_color = color;
 433                         best_d_sq = min_d_sq;
 434                 }
 435         }
 436         train_colors[&train] = best_color;
 437 }
 438
 439 void Engineer::sighandler(int sig)
 440 {
 441         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 442         {
 443                 signal(sig, SIG_DFL);
 444                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 445                 const map<unsigned, Train *> &trains = layout.get_trains();
 446                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 447                         layout.get_driver().set_loco_speed(i->first, 0);
 448                 layout.get_driver().flush();
 449                 raise(sig);
 450         }
 451         else if(sig==SIGTERM || sig==SIGINT)
 452                 exit(0);
 453 }