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/gl/transform.h>
  17 #include <msp/io/print.h>
  18 #include <msp/strings/format.h>
  19 #include <msp/time/units.h>
  20 #include <msp/time/utils.h>
  21 #include "libr2c2/driver.h"
  22 #include "libr2c2/tracktype.h"
  23 #include "3d/path.h"
  24 #include "3d/track.h"
  25 #include "3d/vehicle.h"
  26 #include "engineer.h"
  27 #include "mainpanel.h"
  28 #include "trainpanel.h"
  29 #include "trainproperties.h"
  30 #include "trainview.h"
  31
  32 using namespace std;
  33 using namespace R2C2;
  34 using namespace Msp;
  35
  36 Application::RegApp<Engineer> Engineer::reg;
  37
  38 Engineer::Engineer(int argc, char **argv):
  39         options(argc, argv),
  40         window(options.screen_w, options.screen_h, options.fullscreen),
  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_x(0),
  50         pointer_y(0),
  51         pointer_moved(false)
  52 {
  53         // Setup GUI
  54         window.set_title("Railroad Engineer");
  55         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  56
  57         DataFile::load(ui_res, "r2c2.res");
  58         root = new GLtk::Root(ui_res, window);
  59         root->signal_button_press.connect(sigc::mem_fun(this, &Engineer::button_press));
  60         root->signal_pointer_motion.connect(sigc::mem_fun(this, &Engineer::pointer_motion));
  61         root->set_visible(true);
  62
  63         main_panel = new MainPanel(*this);
  64         root->add(*main_panel);
  65         main_panel->set_position(0, window.get_height()-main_panel->get_geometry().h);
  66         main_panel->set_visible(true);
  67
  68         overlay = new Overlay3D(ui_res.get_default_font());
  69
  70         // Setup railroad control
  71         DataFile::load(catalogue, "tracks.dat");
  72         DataFile::load(catalogue, "locos.dat");
  73         DataFile::load(catalogue, "wagons.dat");
  74         DataFile::load(layout, options.layout_fn);
  75
  76         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  77         layout.signal_block_reserved.connect(sigc::hide<1>(sigc::mem_fun(this, &Engineer::reset_block_color)));
  78         layout.signal_block_state_changed.connect(sigc::hide<1>(sigc::mem_fun(this, &Engineer::reset_block_color)));
  79         layout.signal_emergency.connect(sigc::mem_fun(this, &Engineer::set_status));
  80
  81         if(FS::exists(options.state_fn))
  82                 DataFile::load(layout, options.state_fn);
  83
  84         if(options.network)
  85         {
  86                 server = new Server(layout);
  87                 server->use_event_dispatcher(event_disp);
  88         }
  89
  90         // Setup 3D view
  91         DataFile::load(arrow_mesh, "arrow.mesh");
  92
  93         pipeline.set_camera(&camera);
  94         pipeline.add_renderable_for_pass(layout_3d.get_scene(), 0);
  95         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
  96         pipeline.add_renderable_for_pass(*overlay, "overlay");
  97
  98         light.set_position(GL::Vector4(0, -0.259, 0.966, 0));
  99         light.set_diffuse(GL::Color(0.9));
 100         lighting.set_ambient(GL::Color(0.4));
 101         lighting.attach(0, light);
 102
 103         GL::PipelinePass *pass = &pipeline.add_pass(0);
 104         pass->depth_test = &GL::DepthTest::lequal();
 105         pass->lighting = &lighting;
 106
 107         pass = &pipeline.add_pass("unlit");
 108         pass->depth_test = &GL::DepthTest::lequal();
 109
 110         pass = &pipeline.add_pass("overlay");
 111         pass->blend = &GL::Blend::alpha();
 112
 113         view_all();
 114
 115         // Catch various signals so we can stop the trains in case we get terminated
 116         catch_signal(SIGINT);
 117         catch_signal(SIGTERM);
 118         catch_signal(SIGSEGV);
 119         catch_signal(SIGILL);
 120         catch_signal(SIGFPE);
 121         catch_signal(SIGABRT);
 122 }
 123
 124 Engineer::~Engineer()
 125 {
 126         const map<unsigned, Train *> &trains = layout.get_trains();
 127         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 128                 layout.get_driver().set_loco_speed(i->first, 0);
 129         layout.get_driver().flush();
 130
 131         if(!options.simulate)
 132         {
 133                 layout.save_dynamic(options.state_fn+".tmp");
 134                 FS::rename(options.state_fn+".tmp", options.state_fn);
 135         }
 136
 137         delete overlay;
 138         delete root;
 139
 140         delete server;
 141 }
 142
 143 void Engineer::set_status(const string &text)
 144 {
 145         main_panel->set_status_text(text);
 146         status_timeout = Time::now()+10*Time::sec;
 147 }
 148
 149 void Engineer::rearrange_panels()
 150 {
 151         int y = main_panel->get_geometry().y;
 152         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 153         {
 154                 y -= (*i)->get_geometry().h;
 155                 (*i)->set_position(0, y);
 156         }
 157 }
 158
 159 void Engineer::add_train_view(TrainView &tv)
 160 {
 161         train_views.push_back(&tv);
 162 }
 163
 164 void Engineer::remove_train_view(TrainView &tv)
 165 {
 166         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 167 }
 168
 169 void Engineer::pick(bool with_ep)
 170 {
 171         picking = true;
 172         picking_track = 0;
 173         picking_entry = (with_ep ? 0 : -1);
 174 }
 175
 176 int Engineer::main()
 177 {
 178         window.show();
 179
 180         return Application::main();
 181 }
 182
 183 void Engineer::tick()
 184 {
 185         window.get_display().tick();
 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_all();
 202
 203         if(pointer_moved)
 204         {
 205                 pointer_moved = false;
 206
 207                 if(picking)
 208                 {
 209                         Track *track = pick_track(pointer_x, window.get_height()-pointer_y-1);
 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                 GL::PushMatrix push_mat;
 231
 232                 float rot = picking_track->get_endpoint_direction(picking_entry);
 233                 Vector pos = picking_track->get_endpoint_position(picking_entry);
 234
 235                 GL::translate(pos.x, pos.y, pos.z+0.03);
 236                 GL::rotate(rot*180/M_PI+180, 0, 0, 1);
 237
 238                 arrow_mesh.draw();
 239         }
 240
 241         const GLtk::Geometry &rgeom = root->get_geometry();
 242         GL::matrix_mode(GL::PROJECTION);
 243         GL::load_identity();
 244         GL::ortho_bottomleft(rgeom.w, rgeom.h);
 245         GL::matrix_mode(GL::MODELVIEW);
 246         GL::load_identity();
 247
 248         {
 249                 GL::Bind blend(GL::Blend::alpha());
 250                 root->render();
 251                 GL::Texture::unbind();
 252         }
 253
 254         window.swap_buffers();
 255 }
 256
 257 void Engineer::button_press(int x, int y, unsigned btn, unsigned)
 258 {
 259         if(picking)
 260         {
 261                 if(btn==1 && picking_track)
 262                 {
 263                         picking = false;
 264                         delete picking_path;
 265                         picking_path = 0;
 266                         signal_pick_done.emit(picking_track, picking_entry);
 267                 }
 268                 else if(btn==3 && picking_entry>=0)
 269                 {
 270                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 271                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 272                 }
 273         }
 274         else
 275         {
 276                 Track *track = pick_track(x, window.get_height()-y-1);
 277                 if(track)
 278                 {
 279                         if(track->get_turnout_id())
 280                         {
 281                                 Block &block = track->get_block();
 282                                 if(block.get_train() && !block.get_train()->free_block(block))
 283                                         set_status("Turnout is busy");
 284                                 else
 285                                 {
 286                                         unsigned paths = track->get_type().get_paths();
 287                                         unsigned i = track->get_active_path()+1;
 288                                         while(!(paths&(1<<i)))
 289                                         {
 290                                                 if(!(paths>>i))
 291                                                         i = 0;
 292                                                 else
 293                                                         ++i;
 294                                         }
 295                                         track->set_active_path(i);
 296                                         set_status(format("Turnout %d", track->get_turnout_id()));
 297                                 }
 298                         }
 299                         if(unsigned sid = track->get_sensor_id())
 300                         {
 301                                 if(options.simulate)
 302                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 303                                 set_status(format("Sensor %d", sid));
 304                         }
 305                 }
 306         }
 307 }
 308
 309 void Engineer::pointer_motion(int x, int y)
 310 {
 311         pointer_x = x;
 312         pointer_y = y;
 313         pointer_moved = true;
 314 }
 315
 316 void Engineer::view_all()
 317 {
 318         const Layout3D::TrackMap &tracks = layout_3d.get_tracks();
 319
 320         float view_aspect = float(window.get_width()-200)/window.get_height();
 321         float view_height = tan(camera.get_field_of_view()/2)*2;
 322         float best_score = 0;
 323         GL::Vector3 pos;
 324         GL::Vector3 up;
 325         for(float angle=0; angle<M_PI; angle+=0.01)
 326         {
 327                 float min_x = 0;
 328                 float max_x = 0;
 329                 float min_y = 0;
 330                 float max_y = 0;
 331                 for(Layout3D::TrackMap::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 332                 {
 333                         Vector minp, maxp;
 334                         i->second->get_bounds(angle, minp, maxp);
 335                         min_x = min(min_x, minp.x);
 336                         max_x = max(max_x, maxp.x);
 337                         min_y = min(min_y, minp.y);
 338                         max_y = max(max_y, maxp.y);
 339                 }
 340
 341                 float width = max_x-min_x;
 342                 float height = max_y-min_y;
 343                 float aspect = width/height;
 344                 float score = min(aspect/view_aspect, view_aspect/aspect);
 345
 346                 if(score>best_score)
 347                 {
 348                         best_score = score;
 349
 350                         float size = max(width/view_aspect, height);
 351                         float c = cos(angle);
 352                         float s = sin(angle);
 353                         float x = (min_x+max_x)/2-size*105/window.get_height();
 354                         float y = (min_y+max_y)/2;
 355                         float z = max(size*1.05/view_height, 0.15);
 356
 357                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 358                         up = GL::Vector3(-s, c, 0);
 359                 }
 360         }
 361
 362         camera.set_position(pos);
 363         camera.set_up_direction(up);
 364         camera.set_look_direction(GL::Vector3(0, 0, -1));
 365         camera.set_aspect(float(window.get_width())/window.get_height());
 366         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 367 }
 368
 369 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 370 {
 371         const set<Track *> &tracks = block.get_tracks();
 372         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 373                 layout_3d.get_track(**i).get_path().set_color(color);
 374 }
 375
 376 void Engineer::reset_block_color(const Block &block)
 377 {
 378         bool active = block.get_state()>Block::INACTIVE;
 379
 380         if(block.get_train())
 381         {
 382                 GL::Color color;
 383                 map<Train *, GL::Color>::iterator i = train_colors.find(block.get_train());
 384                 if(i!=train_colors.end())
 385                         color = i->second;
 386
 387                 if(active)
 388                         set_block_color(block, color*0.6);
 389                 else
 390                         set_block_color(block, color*0.5+0.5);
 391         }
 392         else if(active)
 393                 set_block_color(block, GL::Color(0.6));
 394         else
 395                 set_block_color(block, GL::Color(1));
 396 }
 397
 398 Track *Engineer::pick_track(int x, int y)
 399 {
 400         const GL::Vector3 &start = camera.get_position();
 401         float xx = x*2.0/window.get_width()-1.0;
 402         float yy = y*2.0/window.get_height()-1.0;
 403         GL::Vector4 ray = camera.unproject(GL::Vector4(xx, yy, 0, 0));
 404
 405         return layout.pick_track(Vector(start.x, start.y, start.z), Vector(ray.x, ray.y, ray.z));
 406 }
 407
 408 void Engineer::train_added(Train &train)
 409 {
 410         TrainPanel *tpanel = new TrainPanel(*this, train);
 411         root->add(*tpanel);
 412         train_panels.push_back(tpanel);
 413         rearrange_panels();
 414
 415         Vehicle3D &loco3d = layout_3d.get_vehicle(train.get_vehicle(0));
 416         overlay->set_label(loco3d, train.get_name());
 417         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 418
 419         GL::Color best_color;
 420         float best_d_sq = 0;
 421         for(unsigned i=0; i<10; ++i)
 422         {
 423                 GL::Color color;
 424                 color.r = rand()*1.0/RAND_MAX;
 425                 color.g = rand()*1.0/RAND_MAX;
 426                 color.b = rand()*1.0/RAND_MAX;
 427                 color = color*(1/max(max(color.r, color.g), color.b));
 428                 float min_d_sq = 3;
 429                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 430                 {
 431                         float dr = color.r-j->second.r;
 432                         float dg = color.g-j->second.g;
 433                         float db = color.b-j->second.b;
 434                         float d_sq = dr*dr+dg*dg+db*db;
 435                         if(d_sq<min_d_sq)
 436                                 min_d_sq = d_sq;
 437                 }
 438                 if(min_d_sq>best_d_sq)
 439                 {
 440                         best_color = color;
 441                         best_d_sq = min_d_sq;
 442                 }
 443         }
 444         train_colors[&train] = best_color;
 445 }
 446
 447 void Engineer::sighandler(int sig)
 448 {
 449         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 450         {
 451                 signal(sig, SIG_DFL);
 452                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 453                 const map<unsigned, Train *> &trains = layout.get_trains();
 454                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 455                         layout.get_driver().set_loco_speed(i->first, 0);
 456                 layout.get_driver().flush();
 457                 raise(sig);
 458         }
 459         else if(sig==SIGTERM || sig==SIGINT)
 460                 exit(0);
 461 }