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/projection.h>
  15 #include <msp/gl/tests.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/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::mem_fun(this, &Engineer::button_press));
  57         mouse.signal_axis_motion.connect(sigc::mem_fun(this, &Engineer::axis_motion));
  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_block_state_changed.connect(sigc::hide<1>(sigc::mem_fun(this, &Engineer::reset_block_color)));
  76         layout.signal_emergency.connect(sigc::mem_fun(this, &Engineer::set_status));
  77
  78         if(FS::exists(options.state_fn))
  79                 DataFile::load(layout, options.state_fn);
  80
  81         if(options.network)
  82         {
  83                 server = new Server(layout);
  84                 server->use_event_dispatcher(event_disp);
  85         }
  86
  87         // Setup 3D view
  88         DataFile::load(arrow_mesh, "arrow.mesh");
  89
  90         pipeline.set_camera(&camera);
  91         pipeline.add_renderable_for_pass(layout_3d.get_scene(), 0);
  92         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
  93         pipeline.add_renderable_for_pass(*overlay, "overlay");
  94
  95         light.set_position(GL::Vector4(0, -0.259, 0.966, 0));
  96         light.set_diffuse(GL::Color(0.9));
  97         lighting.set_ambient(GL::Color(0.4));
  98         lighting.attach(0, light);
  99
 100         GL::Pipeline::Pass *pass = &pipeline.add_pass(0);
 101         pass->set_depth_test(&GL::DepthTest::lequal());
 102         pass->set_lighting(&lighting);
 103
 104         pass = &pipeline.add_pass("unlit");
 105         pass->set_depth_test(&GL::DepthTest::lequal());
 106
 107         pass = &pipeline.add_pass("overlay");
 108         pass->set_blend(&GL::Blend::alpha());
 109
 110         view_all();
 111
 112         // Catch various signals so we can stop the trains in case we get terminated
 113         catch_signal(SIGINT);
 114         catch_signal(SIGTERM);
 115         catch_signal(SIGSEGV);
 116         catch_signal(SIGILL);
 117         catch_signal(SIGFPE);
 118         catch_signal(SIGABRT);
 119 }
 120
 121 Engineer::~Engineer()
 122 {
 123         const map<unsigned, Train *> &trains = layout.get_trains();
 124         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 125                 layout.get_driver().set_loco_speed(i->first, 0);
 126         layout.get_driver().flush();
 127
 128         if(!options.simulate)
 129         {
 130                 layout.save_dynamic(options.state_fn+".tmp");
 131                 FS::rename(options.state_fn+".tmp", options.state_fn);
 132         }
 133
 134         delete overlay;
 135         delete root;
 136
 137         delete server;
 138 }
 139
 140 void Engineer::set_status(const string &text)
 141 {
 142         main_panel->set_status_text(text);
 143         status_timeout = Time::now()+10*Time::sec;
 144 }
 145
 146 void Engineer::rearrange_panels()
 147 {
 148         int y = main_panel->get_geometry().y;
 149         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 150         {
 151                 y -= (*i)->get_geometry().h;
 152                 (*i)->set_position(0, y);
 153         }
 154 }
 155
 156 void Engineer::add_train_view(TrainView &tv)
 157 {
 158         train_views.push_back(&tv);
 159 }
 160
 161 void Engineer::remove_train_view(TrainView &tv)
 162 {
 163         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 164 }
 165
 166 void Engineer::pick(bool with_ep)
 167 {
 168         picking = true;
 169         picking_track = 0;
 170         picking_entry = (with_ep ? 0 : -1);
 171 }
 172
 173 int Engineer::main()
 174 {
 175         window.show();
 176
 177         return Application::main();
 178 }
 179
 180 void Engineer::tick()
 181 {
 182         window.get_display().tick();
 183
 184         for(list<Train *>::iterator i=new_trains.begin(); i!=new_trains.end(); ++i)
 185                 process_new_train(**i);
 186         new_trains.clear();
 187
 188         layout.tick();
 189         event_disp.tick(Time::zero);
 190
 191         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 192                 (*i)->prepare();
 193
 194         if(status_timeout && Time::now()>status_timeout)
 195         {
 196                 main_panel->set_status_text(string());
 197                 status_timeout = Time::TimeStamp();
 198         }
 199
 200         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 201
 202         pipeline.render();
 203
 204         if(pointer_moved)
 205         {
 206                 pointer_moved = false;
 207
 208                 if(picking)
 209                 {
 210                         Track *track = pick_track(pointer);
 211                         if(track && track!=picking_track)
 212                         {
 213                                 picking_track = track;
 214                                 if(picking_entry>=0)
 215                                         picking_entry = 0;
 216
 217                                 delete picking_path;
 218                                 picking_path = new Path3D(layout_3d.get_track(*track));
 219                                 if(picking_entry>=0)
 220                                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 221                                 else
 222                                         picking_path->set_mask(picking_track->get_type().get_paths());
 223                                 picking_path->set_color(GL::Color(0));
 224                                 picking_path->set_layer(1);
 225                         }
 226                 }
 227         }
 228
 229         if(picking && picking_track && picking_entry>=0)
 230         {
 231                 camera.apply();
 232                 GL::MatrixStack::Push push_mat(GL::MatrixStack::modelview());
 233
 234                 float rot = picking_track->get_endpoint_direction(picking_entry);
 235                 Vector pos = picking_track->get_endpoint_position(picking_entry);
 236
 237                 GL::MatrixStack::modelview() *= GL::Matrix::translation(pos.x, pos.y, pos.z+0.03);
 238                 GL::MatrixStack::modelview() *= GL::Matrix::rotation(rot+M_PI, 0, 0, 1);
 239
 240                 arrow_mesh.draw();
 241         }
 242
 243         root->render();
 244
 245         window.swap_buffers();
 246 }
 247
 248 void Engineer::button_press(unsigned btn)
 249 {
 250         if(picking)
 251         {
 252                 if(btn==1 && picking_track)
 253                 {
 254                         picking = false;
 255                         delete picking_path;
 256                         picking_path = 0;
 257                         signal_pick_done.emit(picking_track, picking_entry);
 258                 }
 259                 else if(btn==3 && picking_entry>=0)
 260                 {
 261                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 262                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 263                 }
 264         }
 265         else
 266         {
 267                 Track *track = pick_track(pointer);
 268                 if(track)
 269                 {
 270                         if(track->get_turnout_id())
 271                         {
 272                                 Block &block = track->get_block();
 273                                 if(block.get_train() && !block.get_train()->free_block(block))
 274                                         set_status("Turnout is busy");
 275                                 else
 276                                 {
 277                                         unsigned paths = track->get_type().get_paths();
 278                                         unsigned i = track->get_active_path()+1;
 279                                         while(!(paths&(1<<i)))
 280                                         {
 281                                                 if(!(paths>>i))
 282                                                         i = 0;
 283                                                 else
 284                                                         ++i;
 285                                         }
 286                                         track->set_active_path(i);
 287                                         set_status(format("Turnout %d", track->get_turnout_id()));
 288                                 }
 289                         }
 290                         if(unsigned sid = track->get_sensor_id())
 291                         {
 292                                 if(options.simulate)
 293                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 294                                 set_status(format("Sensor %d", sid));
 295                         }
 296                 }
 297         }
 298 }
 299
 300 void Engineer::axis_motion(unsigned axis, float value, float)
 301 {
 302         if(axis==0)
 303                 pointer.x = value;
 304         if(axis==1)
 305                 pointer.y = value;
 306         pointer_moved = true;
 307 }
 308
 309 void Engineer::view_all()
 310 {
 311         const Layout3D::TrackMap &tracks = layout_3d.get_tracks();
 312
 313         float view_aspect = float(window.get_width()-200)/window.get_height();
 314         float view_height = tan(camera.get_field_of_view()/2)*2;
 315         float best_score = 0;
 316         GL::Vector3 pos;
 317         GL::Vector3 up;
 318         for(float angle=0; angle<M_PI; angle+=0.01)
 319         {
 320                 float min_x = 0;
 321                 float max_x = 0;
 322                 float min_y = 0;
 323                 float max_y = 0;
 324                 for(Layout3D::TrackMap::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 325                 {
 326                         Vector minp, maxp;
 327                         i->second->get_bounds(angle, minp, maxp);
 328                         min_x = min(min_x, minp.x);
 329                         max_x = max(max_x, maxp.x);
 330                         min_y = min(min_y, minp.y);
 331                         max_y = max(max_y, maxp.y);
 332                 }
 333
 334                 float width = max_x-min_x;
 335                 float height = max_y-min_y;
 336                 float aspect = width/height;
 337                 float score = min(aspect/view_aspect, view_aspect/aspect);
 338
 339                 if(score>best_score)
 340                 {
 341                         best_score = score;
 342
 343                         float size = max(width/view_aspect, height);
 344                         float c = cos(angle);
 345                         float s = sin(angle);
 346                         float x = (min_x+max_x)/2-size*105/window.get_height();
 347                         float y = (min_y+max_y)/2;
 348                         float z = max(size*1.05/view_height, 0.15);
 349
 350                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 351                         up = GL::Vector3(-s, c, 0);
 352                 }
 353         }
 354
 355         camera.set_position(pos);
 356         camera.set_up_direction(up);
 357         camera.set_look_direction(GL::Vector3(0, 0, -1));
 358         camera.set_aspect(float(window.get_width())/window.get_height());
 359         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 360 }
 361
 362 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 363 {
 364         const set<Track *> &tracks = block.get_tracks();
 365         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 366                 layout_3d.get_track(**i).get_path().set_color(color);
 367 }
 368
 369 void Engineer::reset_block_color(const Block &block)
 370 {
 371         bool active = block.get_state()>Block::INACTIVE;
 372
 373         if(block.get_train())
 374         {
 375                 GL::Color color;
 376                 map<Train *, GL::Color>::iterator i = train_colors.find(block.get_train());
 377                 if(i!=train_colors.end())
 378                         color = i->second;
 379
 380                 if(active)
 381                         set_block_color(block, color*0.6);
 382                 else
 383                         set_block_color(block, color*0.5+0.5);
 384         }
 385         else if(active)
 386                 set_block_color(block, GL::Color(0.6));
 387         else
 388                 set_block_color(block, GL::Color(1));
 389 }
 390
 391 Track *Engineer::pick_track(const Vector &p)
 392 {
 393         const GL::Vector3 &start = camera.get_position();
 394         GL::Vector4 ray = camera.unproject(GL::Vector4(p.x, p.y, 0, 0));
 395
 396         return layout.pick_track(Vector(start.x, start.y, start.z), Vector(ray.x, ray.y, ray.z));
 397 }
 398
 399 void Engineer::process_new_train(Train &train)
 400 {
 401         TrainPanel *tpanel = new TrainPanel(*this, train);
 402         root->add(*tpanel);
 403         train_panels.push_back(tpanel);
 404         rearrange_panels();
 405
 406         Vehicle3D &loco3d = layout_3d.get_vehicle(train.get_vehicle(0));
 407         overlay->set_label(loco3d, train.get_name());
 408         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 409 }
 410
 411 void Engineer::train_added(Train &train)
 412 {
 413         new_trains.push_back(&train);
 414
 415         GL::Color best_color;
 416         float best_d_sq = 0;
 417         for(unsigned i=0; i<10; ++i)
 418         {
 419                 GL::Color color;
 420                 color.r = rand()*1.0/RAND_MAX;
 421                 color.g = rand()*1.0/RAND_MAX;
 422                 color.b = rand()*1.0/RAND_MAX;
 423                 color = color*(1/max(max(color.r, color.g), color.b));
 424                 float min_d_sq = 3;
 425                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 426                 {
 427                         float dr = color.r-j->second.r;
 428                         float dg = color.g-j->second.g;
 429                         float db = color.b-j->second.b;
 430                         float d_sq = dr*dr+dg*dg+db*db;
 431                         if(d_sq<min_d_sq)
 432                                 min_d_sq = d_sq;
 433                 }
 434                 if(min_d_sq>best_d_sq)
 435                 {
 436                         best_color = color;
 437                         best_d_sq = min_d_sq;
 438                 }
 439         }
 440         train_colors[&train] = best_color;
 441 }
 442
 443 void Engineer::sighandler(int sig)
 444 {
 445         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 446         {
 447                 signal(sig, SIG_DFL);
 448                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 449                 const map<unsigned, Train *> &trains = layout.get_trains();
 450                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 451                         layout.get_driver().set_loco_speed(i->first, 0);
 452                 layout.get_driver().flush();
 453                 raise(sig);
 454         }
 455         else if(sig==SIGTERM || sig==SIGINT)
 456                 exit(0);
 457 }