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 <algorithm>
   9 #include <cmath>
  10 #include <cstdlib>
  11 #include <limits>
  12 #include <signal.h>
  13 #include <msp/core/except.h>
  14 #include <msp/fs/stat.h>
  15 #include <msp/gbase/display.h>
  16 #include <msp/gbase/window.h>
  17 #include <msp/gl/blend.h>
  18 #include <msp/gl/framebuffer.h>
  19 #include <msp/gl/matrix.h>
  20 #include <msp/gl/misc.h>
  21 #include <msp/gl/projection.h>
  22 #include <msp/gl/tests.h>
  23 #include <msp/gl/transform.h>
  24 #include <msp/io/print.h>
  25 #include <msp/strings/formatter.h>
  26 #include <msp/time/units.h>
  27 #include <msp/time/utils.h>
  28 #include "libmarklin/driver.h"
  29 #include "libmarklin/tracktype.h"
  30 #include "3d/path.h"
  31 #include "3d/track.h"
  32 #include "3d/vehicle.h"
  33 #include "engineer.h"
  34 #include "mainpanel.h"
  35 #include "trainpanel.h"
  36 #include "trainproperties.h"
  37 #include "trainview.h"
  38
  39 using namespace std;
  40 using namespace Marklin;
  41 using namespace Msp;
  42
  43 Application::RegApp<Engineer> Engineer::reg;
  44
  45 Engineer::Engineer(int argc, char **argv):
  46         options(argc, argv),
  47         window(options.screen_w, options.screen_h, options.fullscreen),
  48         layout(catalogue, (options.driver.empty() ? 0 : Driver::create(options.driver))),
  49         layout_3d(layout),
  50         server(0),
  51         pipeline(window.get_width(), window.get_height(), false),
  52         picking(false),
  53         picking_track(0),
  54         picking_entry(0),
  55         picking_path(0),
  56         pointer_x(0),
  57         pointer_y(0),
  58         pointer_moved(false)
  59 {
  60         // Setup GUI
  61         window.set_title("Railroad Engineer");
  62         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  63
  64         DataFile::load(ui_res, "marklin.res");
  65         root = new GLtk::Root(ui_res, window);
  66         root->signal_button_press.connect(sigc::mem_fun(this, &Engineer::button_press));
  67         root->signal_pointer_motion.connect(sigc::mem_fun(this, &Engineer::pointer_motion));
  68         root->set_visible(true);
  69
  70         main_panel = new MainPanel(*this, ui_res);
  71         root->add(*main_panel);
  72         main_panel->set_position(0, window.get_height()-main_panel->get_geometry().h);
  73         main_panel->set_visible(true);
  74
  75         overlay = new Overlay3D(window, camera, ui_res.get_default_font());
  76
  77         // Setup railroad control
  78         DataFile::load(catalogue, "tracks.dat");
  79         DataFile::load(catalogue, "locos.dat");
  80         DataFile::load(catalogue, "wagons.dat");
  81         DataFile::load(layout, options.layout_fn);
  82
  83         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  84         layout.signal_block_reserved.connect(sigc::mem_fun(this, &Engineer::block_reserved));
  85         layout.signal_emergency.connect(sigc::mem_fun(this, &Engineer::set_status));
  86         layout.get_driver().signal_sensor.connect(sigc::mem_fun(this, &Engineer::sensor_event));
  87         if(FS::exists(options.state_fn))
  88                 DataFile::load(layout, options.state_fn);
  89
  90         if(options.network)
  91         {
  92                 server = new Server(layout);
  93                 server->use_event_dispatcher(event_disp);
  94         }
  95
  96         // Setup 3D view
  97         DataFile::load(arrow_mesh, "arrow.mesh");
  98
  99         pipeline.set_camera(&camera);
 100         pipeline.add_renderable_for_pass(layout_3d.get_scene(), 0);
 101         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
 102
 103         light.set_position(GL::Vector4(0, -0.259, 0.966, 0));
 104         light.set_diffuse(GL::Color(0.9));
 105         lighting.set_ambient(GL::Color(0.4));
 106         lighting.attach(0, light);
 107
 108         GL::PipelinePass *pass = &pipeline.add_pass(0);
 109         pass->depth_test = &GL::DepthTest::lequal();
 110         pass->lighting = &lighting;
 111
 112         pass = &pipeline.add_pass("unlit");
 113         pass->depth_test = &GL::DepthTest::lequal();
 114
 115         view_all();
 116
 117         // Catch various signals so we can stop the trains in case we get terminated
 118         catch_signal(SIGINT);
 119         catch_signal(SIGTERM);
 120         catch_signal(SIGSEGV);
 121         catch_signal(SIGILL);
 122         catch_signal(SIGFPE);
 123         catch_signal(SIGABRT);
 124 }
 125
 126 Engineer::~Engineer()
 127 {
 128         const map<unsigned, Train *> &trains = layout.get_trains();
 129         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 130                 layout.get_driver().set_loco_speed(i->first, 0);
 131         layout.get_driver().flush();
 132
 133         if(!options.simulate)
 134                 layout.save_trains(options.state_fn);
 135
 136         delete overlay;
 137         delete root;
 138
 139         delete server;
 140 }
 141
 142 void Engineer::set_status(const string &text)
 143 {
 144         main_panel->set_status_text(text);
 145         status_timeout = Time::now()+10*Time::sec;
 146 }
 147
 148 void Engineer::rearrange_panels()
 149 {
 150         int y = main_panel->get_geometry().y;
 151         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 152         {
 153                 y -= (*i)->get_geometry().h;
 154                 (*i)->set_position(0, y);
 155         }
 156 }
 157
 158 void Engineer::add_train_view(TrainView &tv)
 159 {
 160         train_views.push_back(&tv);
 161 }
 162
 163 void Engineer::remove_train_view(TrainView &tv)
 164 {
 165         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 166 }
 167
 168 void Engineer::pick(bool with_ep)
 169 {
 170         picking = true;
 171         picking_track = 0;
 172         picking_entry = (with_ep ? 0 : -1);
 173 }
 174
 175 int Engineer::main()
 176 {
 177         window.show();
 178
 179         return Application::main();
 180 }
 181
 182 void Engineer::tick()
 183 {
 184         window.get_display().tick();
 185
 186         layout.tick();
 187         event_disp.tick(Time::zero);
 188
 189         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 190                 (*i)->prepare();
 191
 192         if(status_timeout && Time::now()>status_timeout)
 193         {
 194                 main_panel->set_status_text(string());
 195                 status_timeout = Time::TimeStamp();
 196         }
 197
 198         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 199
 200         pipeline.render_all();
 201         {
 202                 GL::Bind blend(GL::Blend::alpha());
 203                 overlay->render(0);
 204         }
 205
 206         if(pointer_moved)
 207         {
 208                 pointer_moved = false;
 209
 210                 if(picking)
 211                 {
 212                         Track3D *track = pick_track(pointer_x, window.get_height()-pointer_y-1);
 213                         if(track && &track->get_track()!=picking_track)
 214                         {
 215                                 picking_track = &track->get_track();
 216                                 if(picking_entry>=0)
 217                                         picking_entry = 0;
 218
 219                                 delete picking_path;
 220                                 picking_path = new Path3D(*track);
 221                                 if(picking_entry>=0)
 222                                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 223                                 else
 224                                         picking_path->set_mask(picking_track->get_type().get_paths());
 225                                 picking_path->set_color(GL::Color(0));
 226                                 picking_path->set_layer(1);
 227                         }
 228                 }
 229         }
 230
 231         if(picking && picking_track && picking_entry>=0)
 232         {
 233                 GL::PushMatrix push_mat;
 234
 235                 float rot = picking_track->get_endpoint_direction(picking_entry);
 236                 Point pos = picking_track->get_endpoint_position(picking_entry);
 237
 238                 GL::translate(pos.x, pos.y, pos.z+0.03);
 239                 GL::rotate(rot*180/M_PI+180, 0, 0, 1);
 240
 241                 arrow_mesh.draw();
 242         }
 243
 244         const GLtk::Geometry &rgeom = root->get_geometry();
 245         GL::matrix_mode(GL::PROJECTION);
 246         GL::load_identity();
 247         GL::ortho_bottomleft(rgeom.w, rgeom.h);
 248         GL::matrix_mode(GL::MODELVIEW);
 249         GL::load_identity();
 250
 251         {
 252                 GL::Bind blend(GL::Blend::alpha());
 253                 root->render();
 254                 GL::Texture::unbind();
 255         }
 256
 257         window.swap_buffers();
 258 }
 259
 260 void Engineer::button_press(int x, int y, unsigned btn, unsigned)
 261 {
 262         if(picking)
 263         {
 264                 if(btn==1 && picking_track)
 265                 {
 266                         picking = false;
 267                         delete picking_path;
 268                         picking_path = 0;
 269                         signal_pick_done.emit(picking_track, picking_entry);
 270                 }
 271                 else if(btn==3 && picking_entry>=0)
 272                 {
 273                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 274                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 275                 }
 276         }
 277         else
 278         {
 279                 Track3D *t3d = pick_track(x, window.get_height()-y-1);
 280                 if(t3d)
 281                 {
 282                         Track &track = t3d->get_track();
 283                         if(track.get_turnout_id())
 284                         {
 285                                 Block &block = track.get_block();
 286                                 if(block.get_train() && !block.get_train()->free_block(block))
 287                                         set_status("Turnout is busy");
 288                                 else
 289                                 {
 290                                         unsigned paths = track.get_type().get_paths();
 291                                         unsigned i = track.get_active_path()+1;
 292                                         while(!(paths&(1<<i)))
 293                                         {
 294                                                 if(!(paths>>i))
 295                                                         i = 0;
 296                                                 else
 297                                                         ++i;
 298                                         }
 299                                         track.set_active_path(i);
 300                                         set_status(format("Turnout %d", track.get_turnout_id()));
 301                                 }
 302                         }
 303                         if(unsigned sid = track.get_sensor_id())
 304                         {
 305                                 if(options.simulate)
 306                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 307                                 set_status(format("Sensor %d", sid));
 308                         }
 309                 }
 310         }
 311 }
 312
 313 void Engineer::pointer_motion(int x, int y)
 314 {
 315         pointer_x = x;
 316         pointer_y = y;
 317         pointer_moved = true;
 318 }
 319
 320 void Engineer::view_all()
 321 {
 322         const Layout3D::TrackMap &tracks = layout_3d.get_tracks();
 323
 324         float view_aspect = float(window.get_width()-200)/window.get_height();
 325         float view_height = tan(camera.get_field_of_view()/2)*2;
 326         float best_score = 0;
 327         GL::Vector3 pos;
 328         GL::Vector3 up;
 329         for(float angle=0; angle<M_PI; angle+=0.01)
 330         {
 331                 float min_x = 0;
 332                 float max_x = 0;
 333                 float min_y = 0;
 334                 float max_y = 0;
 335                 for(Layout3D::TrackMap::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 336                 {
 337                         Point minp, maxp;
 338                         i->second->get_bounds(angle, minp, maxp);
 339                         min_x = min(min_x, minp.x);
 340                         max_x = max(max_x, maxp.x);
 341                         min_y = min(min_y, minp.y);
 342                         max_y = max(max_y, maxp.y);
 343                 }
 344
 345                 float width = max_x-min_x;
 346                 float height = max_y-min_y;
 347                 float aspect = width/height;
 348                 float score = min(aspect/view_aspect, view_aspect/aspect);
 349
 350                 if(score>best_score)
 351                 {
 352                         best_score = score;
 353
 354                         float size = max(width/view_aspect, height);
 355                         float c = cos(angle);
 356                         float s = sin(angle);
 357                         float x = (min_x+max_x)/2-size*105/window.get_height();
 358                         float y = (min_y+max_y)/2;
 359                         float z = max(size*1.05/view_height, 0.15);
 360
 361                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 362                         up = GL::Vector3(-s, c, 0);
 363                 }
 364         }
 365
 366         camera.set_position(pos);
 367         camera.set_up_direction(up);
 368         camera.set_look_direction(GL::Vector3(0, 0, -1));
 369         camera.set_aspect(float(window.get_width())/window.get_height());
 370         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 371 }
 372
 373 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 374 {
 375         const set<Track *> &tracks = block.get_tracks();
 376         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 377                 layout_3d.get_track(**i).get_path().set_color(color);
 378 }
 379
 380 void Engineer::reset_block_color(const Block &block)
 381 {
 382         bool active = false;
 383         if(unsigned sid=block.get_sensor_id())
 384                 active = layout.get_driver().get_sensor(sid);
 385
 386         if(block.get_train())
 387         {
 388                 GL::Color color;
 389                 map<Train *, GL::Color>::iterator i = train_colors.find(block.get_train());
 390                 if(i!=train_colors.end())
 391                         color = i->second;
 392
 393                 if(active)
 394                         set_block_color(block, color*0.6);
 395                 else
 396                         set_block_color(block, color*0.5+0.5);
 397         }
 398         else if(active)
 399                 set_block_color(block, GL::Color(0.6));
 400         else
 401                 set_block_color(block, GL::Color(1));
 402 }
 403
 404 void Engineer::sensor_event(unsigned addr, bool)
 405 {
 406         const set<Block *> &blocks = layout.get_blocks();
 407         for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
 408                 if((*i)->get_sensor_id()==addr)
 409                         reset_block_color(**i);
 410 }
 411
 412 void Engineer::block_reserved(const Block &block, const Train *)
 413 {
 414         reset_block_color(block);
 415 }
 416
 417 Track3D *Engineer::pick_track(int x, int y)
 418 {
 419         float view_height = tan(camera.get_field_of_view()/2)*2;
 420         float xx = ((float(x)-window.get_width()/2)/window.get_height())*view_height;
 421         float yy = (float(y)/window.get_height()-0.5)*view_height;
 422         float size = 4.0/window.get_height()*view_height;
 423
 424         camera.apply();
 425
 426         return layout_3d.pick_track(xx, yy, size);
 427 }
 428
 429 void Engineer::train_added(Train &train)
 430 {
 431         TrainPanel *tpanel = new TrainPanel(*this, ui_res, train);
 432         root->add(*tpanel);
 433         train_panels.push_back(tpanel);
 434         rearrange_panels();
 435
 436         Vehicle3D &loco3d = layout_3d.get_vehicle(train.get_vehicle(0));
 437         overlay->set_label(loco3d, train.get_name());
 438         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 439
 440         GL::Color best_color;
 441         float best_d_sq = 0;
 442         for(unsigned i=0; i<10; ++i)
 443         {
 444                 GL::Color color;
 445                 color.r = rand()*1.0/RAND_MAX;
 446                 color.g = rand()*1.0/RAND_MAX;
 447                 color.b = rand()*1.0/RAND_MAX;
 448                 color = color*(1/max(max(color.r, color.g), color.b));
 449                 float min_d_sq = 3;
 450                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 451                 {
 452                         float dr = color.r-j->second.r;
 453                         float dg = color.g-j->second.g;
 454                         float db = color.b-j->second.b;
 455                         float d_sq = dr*dr+dg*dg+db*db;
 456                         if(d_sq<min_d_sq)
 457                                 min_d_sq = d_sq;
 458                 }
 459                 if(min_d_sq>best_d_sq)
 460                 {
 461                         best_color = color;
 462                         best_d_sq = min_d_sq;
 463                 }
 464         }
 465         train_colors[&train] = best_color;
 466 }
 467
 468 void Engineer::sighandler(int sig)
 469 {
 470         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 471         {
 472                 signal(sig, SIG_DFL);
 473                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 474                 const map<unsigned, Train *> &trains = layout.get_trains();
 475                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 476                         layout.get_driver().set_loco_speed(i->first, 0);
 477                 layout.get_driver().flush();
 478                 raise(sig);
 479         }
 480         else if(sig==SIGTERM || sig==SIGINT)
 481                 exit(0);
 482 }