source/engineer/engineer.cpp

   1 /* $Id$
   2
   3 This file is part of the MSP Märklin suite
   4 Copyright © 2006-2010 Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #include <cmath>
   9 #include <cstdlib>
  10 #include <limits>
  11 #include <signal.h>
  12 #include <msp/core/except.h>
  13 #include <msp/fs/stat.h>
  14 #include <msp/gbase/display.h>
  15 #include <msp/gbase/window.h>
  16 #include <msp/gl/blend.h>
  17 #include <msp/gl/framebuffer.h>
  18 #include <msp/gl/matrix.h>
  19 #include <msp/gl/misc.h>
  20 #include <msp/gl/projection.h>
  21 #include <msp/gl/tests.h>
  22 #include <msp/gl/transform.h>
  23 #include <msp/io/print.h>
  24 #include <msp/strings/formatter.h>
  25 #include <msp/time/units.h>
  26 #include <msp/time/utils.h>
  27 #include "libmarklin/driver.h"
  28 #include "libmarklin/tracktype.h"
  29 #include "3d/path.h"
  30 #include "3d/track.h"
  31 #include "3d/vehicle.h"
  32 #include "engineer.h"
  33 #include "mainpanel.h"
  34 #include "trainpanel.h"
  35 #include "trainproperties.h"
  36
  37 using namespace std;
  38 using namespace Marklin;
  39 using namespace Msp;
  40
  41 Application::RegApp<Engineer> Engineer::reg;
  42
  43 Engineer::Engineer(int argc, char **argv):
  44         options(argc, argv),
  45         window(options.screen_w, options.screen_h, options.fullscreen),
  46         layout(catalogue, (options.driver.empty() ? 0 : Driver::create(options.driver))),
  47         layout_3d(layout),
  48         server(0),
  49         pipeline(window.get_width(), window.get_height(), false),
  50         picking(false),
  51         picking_track(0),
  52         picking_entry(0),
  53         picking_path(0),
  54         pointer_x(0),
  55         pointer_y(0),
  56         pointer_moved(false)
  57 {
  58         // Setup GUI
  59         window.set_title("Railroad Engineer");
  60         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  61
  62         DataFile::load(ui_res, "marklin.res");
  63         root = new GLtk::Root(ui_res, window);
  64         root->signal_button_press.connect(sigc::mem_fun(this, &Engineer::button_press));
  65         root->signal_pointer_motion.connect(sigc::mem_fun(this, &Engineer::pointer_motion));
  66         root->set_visible(true);
  67
  68         main_panel = new MainPanel(*this, ui_res);
  69         root->add(*main_panel);
  70         main_panel->set_position(0, window.get_height()-main_panel->get_geometry().h);
  71         main_panel->set_visible(true);
  72
  73         overlay = new Overlay3D(window, camera, ui_res.get_default_font());
  74
  75         // Setup railroad control
  76         DataFile::load(catalogue, "tracks.dat");
  77         DataFile::load(catalogue, "locos.dat");
  78         DataFile::load(catalogue, "wagons.dat");
  79         DataFile::load(layout, options.layout_fn);
  80
  81         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  82         layout.signal_block_reserved.connect(sigc::mem_fun(this, &Engineer::block_reserved));
  83         layout.signal_emergency.connect(sigc::mem_fun(this, &Engineer::set_status));
  84         layout.get_driver().signal_sensor.connect(sigc::mem_fun(this, &Engineer::sensor_event));
  85         if(FS::exists("engineer.state"))
  86                 DataFile::load(layout, "engineer.state");
  87
  88         if(options.network)
  89         {
  90                 server = new Server(layout);
  91                 server->use_event_dispatcher(event_disp);
  92         }
  93
  94         // Setup 3D view
  95         DataFile::load(arrow_mesh, "arrow.mesh");
  96
  97         pipeline.set_camera(&camera);
  98         pipeline.add_renderable(layout_3d.get_scene());
  99
 100         light.set_position(0, -0.259, 0.966, 0);
 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         view_all();
 108
 109         // Catch various signals so we can stop the trains in case we get terminated
 110         catch_signal(SIGINT);
 111         catch_signal(SIGTERM);
 112         catch_signal(SIGSEGV);
 113         catch_signal(SIGILL);
 114         catch_signal(SIGFPE);
 115         catch_signal(SIGABRT);
 116 }
 117
 118 Engineer::~Engineer()
 119 {
 120         const map<unsigned, Train *> &trains = layout.get_trains();
 121         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 122                 layout.get_driver().set_loco_speed(i->first, 0);
 123         layout.get_driver().flush();
 124
 125         if(!options.simulate)
 126                 layout.save_trains("engineer.state");
 127
 128         delete overlay;
 129         delete root;
 130
 131         delete server;
 132 }
 133
 134 void Engineer::set_status(const string &text)
 135 {
 136         main_panel->set_status_text(text);
 137         status_timeout = Time::now()+10*Time::sec;
 138 }
 139
 140 void Engineer::pick(bool with_ep)
 141 {
 142         picking = true;
 143         picking_track = 0;
 144         picking_entry = (with_ep ? 0 : -1);
 145 }
 146
 147 int Engineer::main()
 148 {
 149         window.show();
 150
 151         return Application::main();
 152 }
 153
 154 void Engineer::tick()
 155 {
 156         window.get_display().tick();
 157
 158         layout.tick();
 159         event_disp.tick(Time::zero);
 160
 161         if(status_timeout && Time::now()>status_timeout)
 162         {
 163                 main_panel->set_status_text(string());
 164                 status_timeout = Time::TimeStamp();
 165         }
 166
 167         GL::clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 168
 169         pipeline.render_all();
 170         {
 171                 GL::Bind depth(GL::DepthTest::lequal());
 172                 layout_3d.get_path_scene().render();
 173         }
 174         {
 175                 GL::Bind blend(GL::Blend::alpha());
 176                 overlay->render(0);
 177         }
 178
 179         if(pointer_moved)
 180         {
 181                 pointer_moved = false;
 182
 183                 if(picking)
 184                 {
 185                         Track3D *track = pick_track(pointer_x, window.get_height()-pointer_y-1);
 186                         if(track && &track->get_track()!=picking_track)
 187                         {
 188                                 picking_track = &track->get_track();
 189                                 if(picking_entry>=0)
 190                                         picking_entry = 0;
 191
 192                                 delete picking_path;
 193                                 picking_path = new Path3D(*track);
 194                                 if(picking_entry>=0)
 195                                         picking_path->set_mask(picking_track->get_type().get_endpoints()[picking_entry].paths);
 196                                 else
 197                                         picking_path->set_mask(picking_track->get_type().get_paths());
 198                                 picking_path->set_color(GL::Color(0));
 199                                 picking_path->set_layer(1);
 200                         }
 201                 }
 202         }
 203
 204         if(picking && picking_track && picking_entry>=0)
 205         {
 206                 GL::PushMatrix push_mat;
 207
 208                 float rot = picking_track->get_endpoint_direction(picking_entry);
 209                 Point pos = picking_track->get_endpoint_position(picking_entry);
 210
 211                 GL::translate(pos.x, pos.y, pos.z+0.03);
 212                 GL::rotate(rot*180/M_PI+180, 0, 0, 1);
 213
 214                 arrow_mesh.draw();
 215         }
 216
 217         const GLtk::Geometry &rgeom = root->get_geometry();
 218         GL::matrix_mode(GL::PROJECTION);
 219         GL::load_identity();
 220         GL::ortho_bottomleft(rgeom.w, rgeom.h);
 221         GL::matrix_mode(GL::MODELVIEW);
 222         GL::load_identity();
 223
 224         {
 225                 GL::Bind blend(GL::Blend::alpha());
 226                 root->render();
 227                 GL::Texture::unbind();
 228         }
 229
 230         window.swap_buffers();
 231 }
 232
 233 void Engineer::button_press(int x, int y, unsigned btn, unsigned)
 234 {
 235         if(picking)
 236         {
 237                 if(btn==1 && picking_track)
 238                 {
 239                         picking = false;
 240                         delete picking_path;
 241                         picking_path = 0;
 242                         signal_pick_done.emit(picking_track, picking_entry);
 243                 }
 244                 else if(btn==3 && picking_entry>=0)
 245                 {
 246                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 247                         picking_path->set_mask(picking_track->get_type().get_endpoints()[picking_entry].paths);
 248                 }
 249         }
 250         else
 251         {
 252                 Track3D *t3d = pick_track(x, window.get_height()-y-1);
 253                 if(t3d)
 254                 {
 255                         Track &track = t3d->get_track();
 256                         if(track.get_turnout_id())
 257                         {
 258                                 Block &block = layout.get_block_by_track(track);
 259                                 if(block.get_train() && !block.get_train()->free_block(block))
 260                                         set_status("Turnout is busy");
 261                                 else
 262                                 {
 263                                         unsigned paths = track.get_type().get_paths();
 264                                         unsigned i = track.get_active_path()+1;
 265                                         while(!(paths&(1<<i)))
 266                                         {
 267                                                 if(!(paths>>i))
 268                                                         i = 0;
 269                                                 else
 270                                                         ++i;
 271                                         }
 272                                         track.set_active_path(i);
 273                                         set_status(format("Turnout %d", track.get_turnout_id()));
 274                                 }
 275                         }
 276                         if(unsigned sid = track.get_sensor_id())
 277                         {
 278                                 if(options.simulate)
 279                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 280                                 set_status(format("Sensor %d", sid));
 281                         }
 282                 }
 283         }
 284 }
 285
 286 void Engineer::pointer_motion(int x, int y)
 287 {
 288         pointer_x = x;
 289         pointer_y = y;
 290         pointer_moved = true;
 291 }
 292
 293 void Engineer::view_all()
 294 {
 295         const list<Track3D *> &tracks = layout_3d.get_tracks();
 296
 297         float view_aspect = float(window.get_width()-200)/window.get_height();
 298         float view_height = tan(camera.get_field_of_view()/2)*2;
 299         float best_score = 0;
 300         GL::Vector3 pos;
 301         GL::Vector3 up;
 302         for(float angle=0; angle<M_PI; angle+=0.01)
 303         {
 304                 float min_x = 0;
 305                 float max_x = 0;
 306                 float min_y = 0;
 307                 float max_y = 0;
 308                 for(list<Track3D *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 309                 {
 310                         Point minp, maxp;
 311                         (*i)->get_bounds(angle, minp, maxp);
 312                         min_x = min(min_x, minp.x);
 313                         max_x = max(max_x, maxp.x);
 314                         min_y = min(min_y, minp.y);
 315                         max_y = max(max_y, maxp.y);
 316                 }
 317
 318                 float width = max_x-min_x;
 319                 float height = max_y-min_y;
 320                 float aspect = width/height;
 321                 float score = min(aspect/view_aspect, view_aspect/aspect);
 322
 323                 if(score>best_score)
 324                 {
 325                         best_score = score;
 326
 327                         float size = max(width/view_aspect, height);
 328                         float c = cos(angle);
 329                         float s = sin(angle);
 330                         float x = (min_x+max_x)/2-size*105/window.get_height();
 331                         float y = (min_y+max_y)/2;
 332                         float z = max(size*1.05/view_height, 0.15);
 333
 334                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 335                         up = GL::Vector3(-s, c, 0);
 336                 }
 337         }
 338
 339         camera.set_position(pos);
 340         camera.set_up_direction(up);
 341         camera.set_look_direction(GL::Vector3(0, 0, -1));
 342         camera.set_aspect(float(window.get_width())/window.get_height());
 343         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 344 }
 345
 346 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 347 {
 348         const set<Track *> &tracks = block.get_tracks();
 349         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 350                 layout_3d.get_track(**i).get_path().set_color(color);
 351 }
 352
 353 void Engineer::reset_block_color(const Block &block)
 354 {
 355         bool active = false;
 356         if(unsigned sid=block.get_sensor_id())
 357                 active = layout.get_driver().get_sensor(sid);
 358
 359         if(block.get_train())
 360         {
 361                 GL::Color color;
 362                 map<Train *, GL::Color>::iterator i = train_colors.find(block.get_train());
 363                 if(i!=train_colors.end())
 364                         color = i->second;
 365
 366                 if(active)
 367                         set_block_color(block, color*0.6);
 368                 else
 369                         set_block_color(block, color*0.5+0.5);
 370         }
 371         else if(active)
 372                 set_block_color(block, GL::Color(0.6));
 373         else
 374                 set_block_color(block, GL::Color(1));
 375 }
 376
 377 void Engineer::sensor_event(unsigned addr, bool)
 378 {
 379         const set<Block *> &blocks = layout.get_blocks();
 380         for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
 381                 if((*i)->get_sensor_id()==addr)
 382                         reset_block_color(**i);
 383 }
 384
 385 void Engineer::block_reserved(const Block &block, const Train *)
 386 {
 387         reset_block_color(block);
 388 }
 389
 390 Track3D *Engineer::pick_track(int x, int y)
 391 {
 392         float view_height = tan(camera.get_field_of_view()/2)*2;
 393         float xx = ((float(x)-window.get_width()/2)/window.get_height())*view_height;
 394         float yy = (float(y)/window.get_height()-0.5)*view_height;
 395         float size = 4.0/window.get_height()*view_height;
 396
 397         camera.apply();
 398
 399         return layout_3d.pick_track(xx, yy, size);
 400 }
 401
 402 void Engineer::train_added(Train &train)
 403 {
 404         TrainPanel *tpanel = new TrainPanel(*this, ui_res, train);
 405         root->add(*tpanel);
 406         int y = main_panel->get_geometry().y;
 407         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 408                 y -= (*i)->get_geometry().h;
 409         tpanel->set_position(0, y-tpanel->get_geometry().h);
 410         train_panels.push_back(tpanel);
 411         tpanel->set_visible(true);
 412
 413         Vehicle3D &loco3d = layout_3d.get_vehicle(train.get_vehicle(0));
 414         overlay->set_label(loco3d, train.get_name());
 415         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 416
 417         GL::Color best_color;
 418         float best_d_sq = 0;
 419         for(unsigned i=0; i<10; ++i)
 420         {
 421                 GL::Color color;
 422                 color.r = rand()*1.0/RAND_MAX;
 423                 color.g = rand()*1.0/RAND_MAX;
 424                 color.b = rand()*1.0/RAND_MAX;
 425                 color = color*(1/max(max(color.r, color.g), color.b));
 426                 float min_d_sq = 3;
 427                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 428                 {
 429                         float dr = color.r-j->second.r;
 430                         float dg = color.g-j->second.g;
 431                         float db = color.b-j->second.b;
 432                         float d_sq = dr*dr+dg*dg+db*db;
 433                         if(d_sq<min_d_sq)
 434                                 min_d_sq = d_sq;
 435                 }
 436                 if(min_d_sq>best_d_sq)
 437                 {
 438                         best_color = color;
 439                         best_d_sq = min_d_sq;
 440                 }
 441         }
 442         train_colors[&train] = best_color;
 443 }
 444
 445 void Engineer::sighandler(int sig)
 446 {
 447         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 448         {
 449                 signal(sig, SIG_DFL);
 450                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 451                 const map<unsigned, Train *> &trains = layout.get_trains();
 452                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 453                         layout.get_driver().set_loco_speed(i->first, 0);
 454                 layout.get_driver().flush();
 455                 raise(sig);
 456         }
 457         else if(sig==SIGTERM || sig==SIGINT)
 458                 exit(0);
 459 }