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/tracktype.h"
  21 #include "3d/path.h"
  22 #include "3d/track.h"
  23 #include "3d/vehicle.h"
  24 #include "engineer.h"
  25 #include "mainpanel.h"
  26 #include "trainpanel.h"
  27 #include "trainproperties.h"
  28 #include "trainview.h"
  29
  30 using namespace std;
  31 using namespace R2C2;
  32 using namespace Msp;
  33
  34 Engineer::Engineer(int argc, char **argv):
  35         options(argc, argv),
  36         window(options.screen_w, options.screen_h, options.fullscreen),
  37         keyboard(window),
  38         mouse(window),
  39         ui_res("r2c2.res"),
  40         layout(catalogue, (options.driver.empty() ? 0 : Driver::create(options.driver))),
  41         layout_3d(layout),
  42         server(0),
  43         pipeline(window.get_width(), window.get_height(), false),
  44         picking(false),
  45         picking_track(0),
  46         picking_entry(0),
  47         picking_path(0),
  48         pointer_moved(false)
  49 {
  50         // Setup GUI
  51         window.set_title("Railroad Engineer");
  52         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  53
  54         root = new GLtk::Root(ui_res, window);
  55         mouse.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &Engineer::button_press), false));
  56         mouse.signal_axis_motion.connect(sigc::bind_return(sigc::mem_fun(this, &Engineer::axis_motion), false));
  57         root->set_visible(true);
  58
  59         main_panel = new MainPanel(*this);
  60         root->add(*main_panel);
  61         main_panel->set_position(0, window.get_height()-main_panel->get_geometry().h);
  62         main_panel->set_visible(true);
  63
  64         overlay = new Overlay3D(ui_res.get_default_font());
  65
  66         // Setup railroad control
  67         DataFile::load(catalogue, "tracks.dat");
  68         DataFile::load(catalogue, "locos.dat");
  69         DataFile::load(catalogue, "wagons.dat");
  70         DataFile::load(layout, options.layout_fn);
  71
  72         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  73         layout.signal_block_reserved.connect(sigc::hide<1>(sigc::mem_fun(this, &Engineer::reset_block_color)));
  74         layout.signal_block_state_changed.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
  77         if(FS::exists(options.state_fn))
  78                 DataFile::load(layout, options.state_fn);
  79
  80         if(options.network)
  81         {
  82                 server = new Server(layout);
  83                 server->use_event_dispatcher(event_disp);
  84         }
  85
  86         // Setup 3D view
  87         DataFile::load(arrow_mesh, "arrow.mesh");
  88
  89         pipeline.set_camera(&camera);
  90         pipeline.add_renderable_for_pass(layout_3d.get_scene(), 0);
  91         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
  92         pipeline.add_renderable_for_pass(*overlay, "overlay");
  93
  94         light.set_position(GL::Vector4(0, -0.259, 0.966, 0));
  95         light.set_diffuse(GL::Color(0.9));
  96         lighting.set_ambient(GL::Color(0.4));
  97         lighting.attach(0, light);
  98
  99         GL::Pipeline::Pass *pass = &pipeline.add_pass(0);
 100         pass->set_depth_test(&GL::DepthTest::lequal());
 101         pass->set_lighting(&lighting);
 102
 103         pass = &pipeline.add_pass("unlit");
 104         pass->set_depth_test(&GL::DepthTest::lequal());
 105
 106         pass = &pipeline.add_pass("overlay");
 107         pass->set_blend(&GL::Blend::alpha());
 108
 109         view_all();
 110
 111         // Catch various signals so we can stop the trains in case we get terminated
 112         catch_signal(SIGINT);
 113         catch_signal(SIGTERM);
 114         catch_signal(SIGSEGV);
 115         catch_signal(SIGILL);
 116         catch_signal(SIGFPE);
 117         catch_signal(SIGABRT);
 118 }
 119
 120 Engineer::~Engineer()
 121 {
 122         const map<unsigned, Train *> &trains = layout.get_trains();
 123         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 124                 layout.get_driver().set_loco_speed(i->first, 0);
 125         layout.get_driver().flush();
 126
 127         if(!options.simulate)
 128         {
 129                 layout.save_dynamic(options.state_fn+".tmp");
 130                 FS::rename(options.state_fn+".tmp", options.state_fn);
 131         }
 132
 133         delete overlay;
 134         delete root;
 135
 136         delete server;
 137 }
 138
 139 void Engineer::set_status(const string &text)
 140 {
 141         main_panel->set_status_text(text);
 142         status_timeout = Time::now()+10*Time::sec;
 143 }
 144
 145 void Engineer::rearrange_panels()
 146 {
 147         int y = main_panel->get_geometry().y;
 148         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 149         {
 150                 y -= (*i)->get_geometry().h;
 151                 (*i)->set_position(0, y);
 152         }
 153 }
 154
 155 void Engineer::add_train_view(TrainView &tv)
 156 {
 157         train_views.push_back(&tv);
 158 }
 159
 160 void Engineer::remove_train_view(TrainView &tv)
 161 {
 162         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 163 }
 164
 165 void Engineer::pick(bool with_ep)
 166 {
 167         picking = true;
 168         picking_track = 0;
 169         picking_entry = (with_ep ? 0 : -1);
 170 }
 171
 172 int Engineer::main()
 173 {
 174         window.show();
 175
 176         return Application::main();
 177 }
 178
 179 void Engineer::tick()
 180 {
 181         window.get_display().tick();
 182
 183         for(list<Train *>::iterator i=new_trains.begin(); i!=new_trains.end(); ++i)
 184                 process_new_train(**i);
 185         new_trains.clear();
 186
 187         layout.tick();
 188         event_disp.tick(Time::zero);
 189
 190         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 191                 (*i)->prepare();
 192
 193         if(status_timeout && Time::now()>status_timeout)
 194         {
 195                 main_panel->set_status_text(string());
 196                 status_timeout = Time::TimeStamp();
 197         }
 198
 199         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 200
 201         pipeline.render();
 202
 203         if(pointer_moved)
 204         {
 205                 pointer_moved = false;
 206
 207                 if(picking)
 208                 {
 209                         Track *track = pick_track(pointer);
 210                         if(track && track!=picking_track)
 211                         {
 212                                 picking_track = track;
 213                                 if(picking_entry>=0)
 214                                         picking_entry = 0;
 215
 216                                 delete picking_path;
 217                                 picking_path = new Path3D(layout_3d.get_track(*track));
 218                                 if(picking_entry>=0)
 219                                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 220                                 else
 221                                         picking_path->set_mask(picking_track->get_type().get_paths());
 222                                 picking_path->set_color(GL::Color(0));
 223                                 picking_path->set_layer(1);
 224                         }
 225                 }
 226         }
 227
 228         if(picking && picking_track && picking_entry>=0)
 229         {
 230                 camera.apply();
 231                 GL::MatrixStack::Push push_mat(GL::MatrixStack::modelview());
 232
 233                 Snap sn = picking_track->get_snap_node(picking_entry);
 234
 235                 GL::MatrixStack::modelview() *= GL::Matrix::translation(sn.position.x, sn.position.y, sn.position.z+0.03);
 236                 GL::MatrixStack::modelview() *= GL::Matrix::rotation(sn.rotation+M_PI, 0, 0, 1);
 237
 238                 arrow_mesh.draw();
 239         }
 240
 241         root->render();
 242
 243         window.swap_buffers();
 244 }
 245
 246 void Engineer::button_press(unsigned btn)
 247 {
 248         if(picking)
 249         {
 250                 if(btn==1 && picking_track)
 251                 {
 252                         picking = false;
 253                         delete picking_path;
 254                         picking_path = 0;
 255                         signal_pick_done.emit(picking_track, picking_entry);
 256                 }
 257                 else if(btn==3 && picking_entry>=0)
 258                 {
 259                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 260                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 261                 }
 262         }
 263         else
 264         {
 265                 Track *track = pick_track(pointer);
 266                 if(track)
 267                 {
 268                         if(track->get_turnout_id())
 269                         {
 270                                 Block &block = track->get_block();
 271                                 if(block.get_train() && !block.get_train()->free_block(block))
 272                                         set_status("Turnout is busy");
 273                                 else
 274                                 {
 275                                         unsigned paths = track->get_type().get_paths();
 276                                         unsigned i = track->get_active_path()+1;
 277                                         while(!(paths&(1<<i)))
 278                                         {
 279                                                 if(!(paths>>i))
 280                                                         i = 0;
 281                                                 else
 282                                                         ++i;
 283                                         }
 284                                         track->set_active_path(i);
 285                                         set_status(format("Turnout %d", track->get_turnout_id()));
 286                                 }
 287                         }
 288                         if(unsigned sid = track->get_sensor_id())
 289                         {
 290                                 if(options.simulate)
 291                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 292                                 set_status(format("Sensor %d", sid));
 293                         }
 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::TrackMap &tracks = layout_3d.get_tracks();
 310
 311         float view_aspect = float(window.get_width()-200)/window.get_height();
 312         float view_height = tan(camera.get_field_of_view()/2)*2;
 313         float best_score = 0;
 314         GL::Vector3 pos;
 315         GL::Vector3 up;
 316         for(float angle=0; angle<M_PI; angle+=0.01)
 317         {
 318                 float min_x = 0;
 319                 float max_x = 0;
 320                 float min_y = 0;
 321                 float max_y = 0;
 322                 for(Layout3D::TrackMap::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 323                 {
 324                         Vector minp, maxp;
 325                         i->second->get_bounds(angle, minp, maxp);
 326                         min_x = min(min_x, minp.x);
 327                         max_x = max(max_x, maxp.x);
 328                         min_y = min(min_y, minp.y);
 329                         max_y = max(max_y, maxp.y);
 330                 }
 331
 332                 float width = max_x-min_x;
 333                 float height = max_y-min_y;
 334                 float aspect = width/height;
 335                 float score = min(aspect/view_aspect, view_aspect/aspect);
 336
 337                 if(score>best_score)
 338                 {
 339                         best_score = score;
 340
 341                         float size = max(width/view_aspect, height);
 342                         float c = cos(angle);
 343                         float s = sin(angle);
 344                         float x = (min_x+max_x)/2-size*105/window.get_height();
 345                         float y = (min_y+max_y)/2;
 346                         float z = max(size*1.05/view_height, 0.15);
 347
 348                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 349                         up = GL::Vector3(-s, c, 0);
 350                 }
 351         }
 352
 353         camera.set_position(pos);
 354         camera.set_up_direction(up);
 355         camera.set_look_direction(GL::Vector3(0, 0, -1));
 356         camera.set_aspect(float(window.get_width())/window.get_height());
 357         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 358 }
 359
 360 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 361 {
 362         const set<Track *> &tracks = block.get_tracks();
 363         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 364                 layout_3d.get_track(**i).get_path().set_color(color);
 365 }
 366
 367 void Engineer::reset_block_color(const Block &block)
 368 {
 369         bool active = block.get_state()>Block::INACTIVE;
 370
 371         if(block.get_train())
 372         {
 373                 GL::Color color;
 374                 map<Train *, GL::Color>::iterator i = train_colors.find(block.get_train());
 375                 if(i!=train_colors.end())
 376                         color = i->second;
 377
 378                 if(active)
 379                         set_block_color(block, color*0.6);
 380                 else
 381                         set_block_color(block, color*0.5+0.5);
 382         }
 383         else if(active)
 384                 set_block_color(block, GL::Color(0.6));
 385         else
 386                 set_block_color(block, GL::Color(1));
 387 }
 388
 389 Track *Engineer::pick_track(const Vector &p)
 390 {
 391         const GL::Vector3 &start = camera.get_position();
 392         GL::Vector4 ray = camera.unproject(GL::Vector4(p.x, p.y, 0, 0));
 393
 394         return layout.pick_track(Vector(start.x, start.y, start.z), Vector(ray.x, ray.y, ray.z));
 395 }
 396
 397 void Engineer::process_new_train(Train &train)
 398 {
 399         TrainPanel *tpanel = new TrainPanel(*this, train);
 400         root->add(*tpanel);
 401         train_panels.push_back(tpanel);
 402         rearrange_panels();
 403
 404         Vehicle3D &loco3d = layout_3d.get_vehicle(train.get_vehicle(0));
 405         overlay->set_label(loco3d, train.get_name());
 406         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 407 }
 408
 409 void Engineer::train_added(Train &train)
 410 {
 411         new_trains.push_back(&train);
 412
 413         GL::Color best_color;
 414         float best_d_sq = 0;
 415         for(unsigned i=0; i<10; ++i)
 416         {
 417                 GL::Color color;
 418                 unsigned h = rand()%3;
 419                 color.r = (h==0 ? 0.0 : rand()*1.0/RAND_MAX);
 420                 color.g = (h==1 ? 0.0 : rand()*1.0/RAND_MAX);
 421                 color.b = (h==2 ? 0.0 : rand()*1.0/RAND_MAX);
 422                 color = color*(1/max(max(color.r, color.g), color.b));
 423                 float min_d_sq = 3;
 424                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 425                 {
 426                         float dr = color.r-j->second.r;
 427                         float dg = color.g-j->second.g;
 428                         float db = color.b-j->second.b;
 429                         float d_sq = dr*dr+dg*dg+db*db;
 430                         if(d_sq<min_d_sq)
 431                                 min_d_sq = d_sq;
 432                 }
 433                 if(min_d_sq>best_d_sq)
 434                 {
 435                         best_color = color;
 436                         best_d_sq = min_d_sq;
 437                 }
 438         }
 439         train_colors[&train] = best_color;
 440 }
 441
 442 void Engineer::sighandler(int sig)
 443 {
 444         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 445         {
 446                 signal(sig, SIG_DFL);
 447                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 448                 const map<unsigned, Train *> &trains = layout.get_trains();
 449                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 450                         layout.get_driver().set_loco_speed(i->first, 0);
 451                 layout.get_driver().flush();
 452                 raise(sig);
 453         }
 454         else if(sig==SIGTERM || sig==SIGINT)
 455                 exit(0);
 456 }