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 {
  55         // Setup GUI
  56         window.set_title("Railroad Engineer");
  57         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  58
  59         DataFile::load(ui_res, "marklin.res");
  60         root = new GLtk::Root(ui_res, window);
  61         root->signal_button_press.connect(sigc::mem_fun(this, &Engineer::button_press));
  62         root->signal_pointer_motion.connect(sigc::mem_fun(this, &Engineer::pointer_motion));
  63         root->set_visible(true);
  64
  65         main_panel = new MainPanel(*this, ui_res);
  66         root->add(*main_panel);
  67         main_panel->set_position(0, window.get_height()-main_panel->get_geometry().h);
  68         main_panel->set_visible(true);
  69
  70         overlay = new Overlay3D(window, camera, ui_res.get_default_font());
  71
  72         // Setup railroad control
  73         DataFile::load(catalogue, "tracks.dat");
  74         DataFile::load(catalogue, "locos.dat");
  75         DataFile::load(catalogue, "wagons.dat");
  76         DataFile::load(layout, options.layout_fn);
  77
  78         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  79         layout.signal_block_reserved.connect(sigc::mem_fun(this, &Engineer::block_reserved));
  80         layout.signal_emergency.connect(sigc::mem_fun(this, &Engineer::set_status));
  81         layout.get_driver().signal_sensor.connect(sigc::mem_fun(this, &Engineer::sensor_event));
  82         if(FS::exists("engineer.state"))
  83                 DataFile::load(layout, "engineer.state");
  84
  85         if(options.network)
  86         {
  87                 server = new Server(layout);
  88                 server->use_event_dispatcher(event_disp);
  89         }
  90
  91         // Setup 3D view
  92         DataFile::load(arrow_mesh, "arrow.mesh");
  93
  94         pipeline.set_camera(&camera);
  95         pipeline.add_renderable(layout_3d.get_scene());
  96
  97         light.set_position(0, -0.259, 0.966, 0);
  98         lighting.attach(0, light);
  99
 100         GL::PipelinePass &pass = pipeline.add_pass(0);
 101         pass.depth_test = &GL::DepthTest::lequal();
 102         pass.lighting = &lighting;
 103
 104         view_all();
 105
 106         // Catch various signals so we can stop the trains in case we get terminated
 107         catch_signal(SIGINT);
 108         catch_signal(SIGTERM);
 109         catch_signal(SIGSEGV);
 110         catch_signal(SIGILL);
 111         catch_signal(SIGFPE);
 112         catch_signal(SIGABRT);
 113 }
 114
 115 Engineer::~Engineer()
 116 {
 117         const map<unsigned, Train *> &trains = layout.get_trains();
 118         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 119                 layout.get_driver().set_loco_speed(i->first, 0);
 120         layout.get_driver().flush();
 121
 122         if(!options.simulate)
 123                 layout.save_trains("engineer.state");
 124
 125         delete overlay;
 126         delete root;
 127
 128         delete server;
 129 }
 130
 131 void Engineer::set_status(const string &text)
 132 {
 133         main_panel->set_status_text(text);
 134         status_timeout = Time::now()+10*Time::sec;
 135 }
 136
 137 void Engineer::pick(bool with_ep)
 138 {
 139         picking = true;
 140         picking_track = 0;
 141         picking_entry = (with_ep ? 0 : -1);
 142 }
 143
 144 int Engineer::main()
 145 {
 146         window.show();
 147
 148         return Application::main();
 149 }
 150
 151 void Engineer::tick()
 152 {
 153         window.get_display().tick();
 154
 155         layout.tick();
 156         event_disp.tick(Time::zero);
 157
 158         if(status_timeout && Time::now()>status_timeout)
 159         {
 160                 main_panel->set_status_text(string());
 161                 status_timeout = Time::TimeStamp();
 162         }
 163
 164         GL::clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 165
 166         pipeline.render_all();
 167         {
 168                 GL::Bind depth(GL::DepthTest::lequal());
 169                 layout_3d.get_path_scene().render();
 170         }
 171         {
 172                 GL::Bind blend(GL::Blend::alpha());
 173                 overlay->render(0);
 174         }
 175
 176         if(picking && picking_track && picking_entry>=0)
 177         {
 178                 GL::PushMatrix push_mat;
 179
 180                 float rot = picking_track->get_endpoint_direction(picking_entry);
 181                 Point pos = picking_track->get_endpoint_position(picking_entry);
 182
 183                 GL::translate(pos.x, pos.y, pos.z+0.03);
 184                 GL::rotate(rot*180/M_PI+180, 0, 0, 1);
 185
 186                 arrow_mesh.draw();
 187         }
 188
 189         const GLtk::Geometry &rgeom = root->get_geometry();
 190         GL::matrix_mode(GL::PROJECTION);
 191         GL::load_identity();
 192         GL::ortho_bottomleft(rgeom.w, rgeom.h);
 193         GL::matrix_mode(GL::MODELVIEW);
 194         GL::load_identity();
 195
 196         {
 197                 GL::Bind blend(GL::Blend::alpha());
 198                 root->render();
 199                 GL::Texture::unbind();
 200         }
 201
 202         window.swap_buffers();
 203 }
 204
 205 void Engineer::button_press(int x, int y, unsigned btn, unsigned)
 206 {
 207         if(picking)
 208         {
 209                 if(btn==1 && picking_track)
 210                 {
 211                         picking = false;
 212                         delete picking_path;
 213                         picking_path = 0;
 214                         signal_pick_done.emit(picking_track, picking_entry);
 215                 }
 216                 else if(btn==3 && picking_entry>=0)
 217                 {
 218                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 219                         picking_path->set_mask(picking_track->get_type().get_endpoints()[picking_entry].paths);
 220                 }
 221         }
 222         else
 223         {
 224                 Track3D *t3d = pick_track(x, window.get_height()-y-1);
 225                 if(t3d)
 226                 {
 227                         Track &track = t3d->get_track();
 228                         if(track.get_turnout_id())
 229                         {
 230                                 Block &block = layout.get_block_by_track(track);
 231                                 if(block.get_train() && !block.get_train()->free_block(block))
 232                                         set_status("Turnout is busy");
 233                                 else
 234                                 {
 235                                         unsigned paths = track.get_type().get_paths();
 236                                         unsigned i = track.get_active_path()+1;
 237                                         while(!(paths&(1<<i)))
 238                                         {
 239                                                 if(!(paths>>i))
 240                                                         i = 0;
 241                                                 else
 242                                                         ++i;
 243                                         }
 244                                         track.set_active_path(i);
 245                                 }
 246                         }
 247                         else if(options.simulate)
 248                         {
 249                                 if(unsigned sid=track.get_sensor_id())
 250                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 251                         }
 252                 }
 253         }
 254 }
 255
 256 void Engineer::pointer_motion(int x, int y)
 257 {
 258         if(picking)
 259         {
 260                 Track3D *track = pick_track(x, window.get_height()-y-1);
 261                 if(track && &track->get_track()!=picking_track)
 262                 {
 263                         picking_track = &track->get_track();
 264                         if(picking_entry>=0)
 265                                 picking_entry = 0;
 266
 267                         delete picking_path;
 268                         picking_path = new Path3D(*track);
 269                         if(picking_entry>=0)
 270                                 picking_path->set_mask(picking_track->get_type().get_endpoints()[picking_entry].paths);
 271                         else
 272                                 picking_path->set_mask(picking_track->get_type().get_paths());
 273                         picking_path->set_color(GL::Color(0));
 274                         picking_path->set_layer(1);
 275                 }
 276         }
 277 }
 278
 279 void Engineer::view_all()
 280 {
 281         const list<Track3D *> &tracks = layout_3d.get_tracks();
 282
 283         float view_aspect = float(window.get_width()-200)/window.get_height();
 284         float view_height = tan(camera.get_field_of_view()/2)*2;
 285         float best_score = 0;
 286         GL::Vector3 pos;
 287         GL::Vector3 up;
 288         for(float angle=0; angle<M_PI; angle+=0.01)
 289         {
 290                 float min_x = 0;
 291                 float max_x = 0;
 292                 float min_y = 0;
 293                 float max_y = 0;
 294                 for(list<Track3D *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 295                 {
 296                         Point minp, maxp;
 297                         (*i)->get_bounds(angle, minp, maxp);
 298                         min_x = min(min_x, minp.x);
 299                         max_x = max(max_x, maxp.x);
 300                         min_y = min(min_y, minp.y);
 301                         max_y = max(max_y, maxp.y);
 302                 }
 303
 304                 float width = max_x-min_x;
 305                 float height = max_y-min_y;
 306                 float aspect = width/height;
 307                 float score = min(aspect/view_aspect, view_aspect/aspect);
 308
 309                 if(score>best_score)
 310                 {
 311                         best_score = score;
 312
 313                         float size = max(width/view_aspect, height);
 314                         float c = cos(angle);
 315                         float s = sin(angle);
 316                         float x = (min_x+max_x)/2-size*105/window.get_height();
 317                         float y = (min_y+max_y)/2;
 318                         float z = max(size*1.05/view_height, 0.15);
 319
 320                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 321                         up = GL::Vector3(-s, c, 0);
 322                 }
 323         }
 324
 325         camera.set_position(pos);
 326         camera.set_up_direction(up);
 327         camera.set_look_direction(GL::Vector3(0, 0, -1));
 328         camera.set_aspect(float(window.get_width())/window.get_height());
 329         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 330 }
 331
 332 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 333 {
 334         const set<Track *> &tracks = block.get_tracks();
 335         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 336                 layout_3d.get_track(**i).get_path().set_color(color);
 337 }
 338
 339 void Engineer::reset_block_color(const Block &block)
 340 {
 341         bool active = false;
 342         if(unsigned sid=block.get_sensor_id())
 343                 active = layout.get_driver().get_sensor(sid);
 344
 345         if(block.get_train())
 346         {
 347                 GL::Color color;
 348                 map<Train *, GL::Color>::iterator i = train_colors.find(block.get_train());
 349                 if(i!=train_colors.end())
 350                         color = i->second;
 351
 352                 if(active)
 353                         set_block_color(block, color*0.6);
 354                 else
 355                         set_block_color(block, color*0.5+0.5);
 356         }
 357         else if(active)
 358                 set_block_color(block, GL::Color(0.6));
 359         else
 360                 set_block_color(block, GL::Color(1));
 361 }
 362
 363 void Engineer::sensor_event(unsigned addr, bool)
 364 {
 365         const set<Block *> &blocks = layout.get_blocks();
 366         for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
 367                 if((*i)->get_sensor_id()==addr)
 368                         reset_block_color(**i);
 369 }
 370
 371 void Engineer::block_reserved(const Block &block, const Train *)
 372 {
 373         reset_block_color(block);
 374 }
 375
 376 Track3D *Engineer::pick_track(int x, int y)
 377 {
 378         float view_height = tan(camera.get_field_of_view()/2)*2;
 379         float xx = ((float(x)-window.get_width()/2)/window.get_height())*view_height;
 380         float yy = (float(y)/window.get_height()-0.5)*view_height;
 381         float size = 4.0/window.get_height()*view_height;
 382
 383         camera.apply();
 384
 385         return layout_3d.pick_track(xx, yy, size);
 386 }
 387
 388 void Engineer::train_added(Train &train)
 389 {
 390         TrainPanel *tpanel = new TrainPanel(*this, ui_res, train);
 391         root->add(*tpanel);
 392         int y = main_panel->get_geometry().y;
 393         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 394                 y -= (*i)->get_geometry().h;
 395         tpanel->set_position(0, y-tpanel->get_geometry().h);
 396         train_panels.push_back(tpanel);
 397         tpanel->set_visible(true);
 398
 399         Vehicle3D &loco3d = layout_3d.get_vehicle(train.get_vehicle(0));
 400         overlay->set_label(loco3d, train.get_name());
 401         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 402
 403         GL::Color best_color;
 404         float best_d_sq = 0;
 405         for(unsigned i=0; i<10; ++i)
 406         {
 407                 GL::Color color;
 408                 color.r = rand()*1.0/RAND_MAX;
 409                 color.g = rand()*1.0/RAND_MAX;
 410                 color.b = rand()*1.0/RAND_MAX;
 411                 color = color*(1/max(max(color.r, color.g), color.b));
 412                 float min_d_sq = 3;
 413                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 414                 {
 415                         float dr = color.r-j->second.r;
 416                         float dg = color.g-j->second.g;
 417                         float db = color.b-j->second.b;
 418                         float d_sq = dr*dr+dg*dg+db*db;
 419                         if(d_sq<min_d_sq)
 420                                 min_d_sq = d_sq;
 421                 }
 422                 if(min_d_sq>best_d_sq)
 423                 {
 424                         best_color = color;
 425                         best_d_sq = min_d_sq;
 426                 }
 427         }
 428         train_colors[&train] = best_color;
 429 }
 430
 431 void Engineer::sighandler(int sig)
 432 {
 433         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 434         {
 435                 signal(sig, SIG_DFL);
 436                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 437                 const map<unsigned, Train *> &trains = layout.get_trains();
 438                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 439                         layout.get_driver().set_loco_speed(i->first, 0);
 440                 layout.get_driver().flush();
 441                 raise(sig);
 442         }
 443         else if(sig==SIGTERM || sig==SIGINT)
 444                 exit(0);
 445 }