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/gltk/floatingarrangement.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/trackcircuit.h"
  22 #include "libr2c2/tracktype.h"
  23 #include "3d/allocation.h"
  24 #include "3d/path.h"
  25 #include "3d/track.h"
  26 #include "3d/trackcircuit.h"
  27 #include "3d/vehicle.h"
  28 #include "engineer.h"
  29 #include "mainwindow.h"
  30 #include "newtraindialog.h"
  31 #include "traindialog.h"
  32 #include "trainview.h"
  33
  34 using namespace std;
  35 using namespace R2C2;
  36 using namespace Msp;
  37
  38 Engineer::Engineer(int argc, char **argv):
  39         options(argc, argv),
  40         window(options.screen_w, options.screen_h, options.fullscreen),
  41         keyboard(window),
  42         mouse(window),
  43         ui_res("r2c2.res"),
  44         import_active(false),
  45         layout(catalogue, (options.driver.empty() ? 0 : Driver::create(options.driver))),
  46         layout_3d(layout),
  47         server(0),
  48         main_view(layout_3d, window.get_width(), window.get_height())
  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, &keyboard, &mouse);
  55         GLtk::Layout *root_layout = new GLtk::Layout;
  56         root->set_layout(root_layout);
  57         root_layout->set_margin(GLtk::Sides());
  58         root_arrangement = new GLtk::FloatingArrangement(*root_layout);
  59         mouse.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &Engineer::button_press), false));
  60         mouse.signal_axis_motion.connect(sigc::bind_return(sigc::mem_fun(this, &Engineer::axis_motion), false));
  61         root->set_visible(true);
  62
  63         main_wnd = new MainWindow(*this);
  64         root->add(*main_wnd);
  65         main_wnd->autosize();
  66         main_wnd->set_position(0, window.get_height()-main_wnd->get_geometry().h);
  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(catalogue, "terrain.dat");
  75         DataFile::load(layout, options.layout_fn);
  76
  77         if(layout.has_driver())
  78                 layout.get_driver().signal_locomotive_detected.connect(sigc::mem_fun(this, &Engineer::locomotive_detected));
  79         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  80         layout.signal_emergency.connect(sigc::mem_fun(this, &Engineer::set_status));
  81         const set<Block *> &blocks = layout.get_all<Block>();
  82         for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
  83                 if(TrackCircuit *tc = (*i)->get_sensor())
  84                         new TrackCircuit3D(layout_3d, *tc);
  85
  86         const set<Track *> &tracks = layout.get_all<Track>();
  87         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
  88                 if((*i)->get_type().is_turnout())
  89                         new Path3D(layout_3d.get_3d(**i));
  90
  91         if(FS::exists(options.state_fn))
  92                 DataFile::load(layout, options.state_fn);
  93
  94         if(options.network)
  95         {
  96                 server = new Server(layout);
  97                 server->use_event_dispatcher(event_disp);
  98         }
  99
 100         // Setup 3D view
 101         GL::Pipeline &pipeline = main_view.get_pipeline();
 102
 103         GL::Pipeline::Pass *pass = &pipeline.add_pass("unlit");
 104         pass->set_depth_test(&GL::DepthTest::lequal());
 105         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
 106
 107         pass = &pipeline.add_pass("overlay");
 108         pass->set_blend(&GL::Blend::alpha());
 109         pipeline.add_renderable_for_pass(*overlay, "overlay");
 110
 111         view_all();
 112
 113         // Catch various signals so we can stop the trains in case we get terminated
 114         catch_signal(SIGINT);
 115         catch_signal(SIGTERM);
 116         catch_signal(SIGSEGV);
 117         catch_signal(SIGILL);
 118         catch_signal(SIGFPE);
 119         catch_signal(SIGABRT);
 120 }
 121
 122 Engineer::~Engineer()
 123 {
 124         if(!options.simulate)
 125         {
 126                 layout.save_dynamic(options.state_fn+".tmp");
 127                 FS::rename(options.state_fn+".tmp", options.state_fn);
 128         }
 129
 130         layout.get_driver().halt(true);
 131         layout.get_driver().flush();
 132
 133         delete overlay;
 134         delete root_arrangement;
 135         delete root;
 136
 137         delete server;
 138 }
 139
 140 void Engineer::set_status(const string &text)
 141 {
 142         main_wnd->set_status_text(text);
 143         status_timeout = Time::now()+10*Time::sec;
 144 }
 145
 146 void Engineer::add_train_view(TrainView &tv)
 147 {
 148         train_views.push_back(&tv);
 149 }
 150
 151 void Engineer::remove_train_view(TrainView &tv)
 152 {
 153         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 154 }
 155
 156 int Engineer::main()
 157 {
 158         window.show();
 159
 160         return Application::main();
 161 }
 162
 163 void Engineer::tick()
 164 {
 165         window.get_display().tick();
 166
 167         for(list<Train *>::iterator i=new_trains.begin(); i!=new_trains.end(); ++i)
 168                 process_new_train(**i);
 169         new_trains.clear();
 170
 171         layout.tick();
 172         event_disp.tick(Time::zero);
 173
 174         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 175                 (*i)->prepare();
 176
 177         if(status_timeout && Time::now()>status_timeout)
 178         {
 179                 main_wnd->set_status_text(string());
 180                 status_timeout = Time::TimeStamp();
 181         }
 182
 183         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 184
 185         main_view.render();
 186
 187         root->render();
 188
 189         window.swap_buffers();
 190 }
 191
 192 void Engineer::button_press(unsigned btn)
 193 {
 194         if(btn==1)
 195         {
 196                 Object *obj = pick_object(pointer);
 197                 if(Track *track = dynamic_cast<Track *>(obj))
 198                 {
 199                         if(track->get_type().is_turnout())
 200                         {
 201                                 Block &block = track->get_block();
 202                                 if(block.get_train() && block.get_train()->is_block_critical(block))
 203                                         set_status("Turnout is busy");
 204                                 else
 205                                 {
 206                                         unsigned paths = track->get_type().get_paths();
 207                                         unsigned i = track->get_active_path()+1;
 208                                         while(!(paths&(1<<i)))
 209                                         {
 210                                                 if(!(paths>>i))
 211                                                         i = 0;
 212                                                 else
 213                                                         ++i;
 214                                         }
 215                                         track->set_active_path(i);
 216                                         set_status(format("Turnout %d", track->get_turnout_address()));
 217                                 }
 218                         }
 219                         if(unsigned saddr = track->get_sensor_address())
 220                         {
 221                                 if(options.simulate)
 222                                         layout.get_driver().set_sensor(saddr, !layout.get_driver().get_sensor(saddr));
 223                                 set_status(format("Sensor %d", saddr));
 224                         }
 225                 }
 226                 else if(Vehicle *veh = dynamic_cast<Vehicle *>(obj))
 227                 {
 228                         TrainDialog *dlg = new TrainDialog(*this, *veh->get_train());
 229                         root->add(*dlg);
 230                         dlg->autosize();
 231                 }
 232         }
 233 }
 234
 235 void Engineer::axis_motion(unsigned axis, float value, float)
 236 {
 237         if(axis==0)
 238                 pointer.x = value;
 239         if(axis==1)
 240                 pointer.y = value;
 241 }
 242
 243 void Engineer::view_all()
 244 {
 245         const Layout3D::ObjectMap &objects = layout_3d.get_all();
 246
 247         float view_aspect = float(window.get_width())/window.get_height();
 248         float view_height = tan(main_view.get_camera().get_field_of_view()/2.0f)*2.0f;
 249         float best_score = 0;
 250         GL::Vector3 pos;
 251         GL::Vector3 up;
 252         for(Angle angle; angle<Angle::half_turn(); angle+=Angle::from_radians(0.01))
 253         {
 254                 Transform trans = Transform::rotation(-angle, Vector(0, 0, 1));
 255                 BoundingBox bbox;
 256                 for(Layout3D::ObjectMap::const_iterator i=objects.begin(); i!=objects.end(); ++i)
 257                         bbox = bbox|trans.transform(i->second->get_object().get_bounding_box());
 258
 259                 const Vector &minp = bbox.get_minimum_point();
 260                 const Vector &maxp = bbox.get_maximum_point();
 261
 262                 float width = maxp.x-minp.x;
 263                 float height = maxp.y-minp.y;
 264                 float aspect = width/height;
 265                 float score = min(aspect/view_aspect, view_aspect/aspect);
 266
 267                 if(score>best_score)
 268                 {
 269                         best_score = score;
 270
 271                         float size = max(width/view_aspect, height);
 272                         float c = cos(angle);
 273                         float s = sin(angle);
 274                         float x = (minp.x+maxp.x)/2;
 275                         float y = (minp.y+maxp.y)/2;
 276                         float z = max(size*1.05/view_height, 0.15);
 277
 278                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 279                         up = GL::Vector3(-s, c, 0);
 280                 }
 281         }
 282
 283         GL::Camera &camera = main_view.get_camera();
 284         camera.set_position(pos);
 285         camera.set_up_direction(up);
 286         camera.set_look_direction(GL::Vector3(0, 0, -1));
 287         camera.set_aspect(float(window.get_width())/window.get_height());
 288         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 289 }
 290
 291 Object *Engineer::pick_object(const Vector &p)
 292 {
 293         const GL::Vector3 &start = main_view.get_camera().get_position();
 294         GL::Vector4 ray = main_view.get_camera().unproject(GL::Vector4(p.x, p.y, 0, 0));
 295
 296         // XXX Do this better; make this function a template?
 297         if(Vehicle *veh = layout.pick<Vehicle>(Ray(start, Vector(ray))))
 298                 return veh;
 299         return layout.pick<Track>(Ray(start, Vector(ray)));
 300 }
 301
 302 void Engineer::locomotive_detected(const Driver::DetectedLocomotive &loco)
 303 {
 304         if(!import_active)
 305         {
 306                 NewTrainDialog *dlg = new NewTrainDialog(*this);
 307                 dlg->prefill(loco);
 308                 dlg->signal_response.connect(sigc::mem_fun(this, &Engineer::import_finished));
 309                 root->add(*dlg);
 310                 import_active = true;
 311         }
 312 }
 313
 314 void Engineer::import_finished(int)
 315 {
 316         import_active = false;
 317 }
 318
 319 void Engineer::process_new_train(Train &train)
 320 {
 321         Vehicle3D &loco3d = layout_3d.get_3d(train.get_vehicle(0));
 322         overlay->set_label(loco3d, train.get_name());
 323         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 324 }
 325
 326 void Engineer::train_added(Train &train)
 327 {
 328         new_trains.push_back(&train);
 329
 330         GL::Color best_color;
 331         float best_d_sq = 0;
 332         for(unsigned i=0; i<10; ++i)
 333         {
 334                 GL::Color color;
 335                 unsigned h = rand()%3;
 336                 color.r = (h==0 ? 0.0 : rand()*1.0/RAND_MAX);
 337                 color.g = (h==1 ? 0.0 : rand()*1.0/RAND_MAX);
 338                 color.b = (h==2 ? 0.0 : rand()*1.0/RAND_MAX);
 339                 color = color*(1/max(max(color.r, color.g), color.b));
 340                 float min_d_sq = 3;
 341                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 342                 {
 343                         float dr = color.r-j->second.r;
 344                         float dg = color.g-j->second.g;
 345                         float db = color.b-j->second.b;
 346                         float d_sq = dr*dr+dg*dg+db*db;
 347                         if(d_sq<min_d_sq)
 348                                 min_d_sq = d_sq;
 349                 }
 350                 if(min_d_sq>best_d_sq)
 351                 {
 352                         best_color = color;
 353                         best_d_sq = min_d_sq;
 354                 }
 355         }
 356         train_colors[&train] = best_color;
 357
 358         Allocation3D *alloc = new Allocation3D(layout_3d, train);
 359         alloc->set_color(best_color);
 360 }
 361
 362 void Engineer::sighandler(int sig)
 363 {
 364         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 365         {
 366                 signal(sig, SIG_DFL);
 367                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 368                 layout.get_driver().halt(true);
 369                 layout.get_driver().flush();
 370                 raise(sig);
 371         }
 372         else if(sig==SIGTERM || sig==SIGINT)
 373                 exit(0);
 374 }