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("engineer.state"))
  88                 DataFile::load(layout, "engineer.state");
  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(layout_3d.get_scene());
 101
 102         light.set_position(0, -0.259, 0.966, 0);
 103         lighting.attach(0, light);
 104
 105         GL::PipelinePass &pass = pipeline.add_pass(0);
 106         pass.depth_test = &GL::DepthTest::lequal();
 107         pass.lighting = &lighting;
 108
 109         view_all();
 110
 111         // Catch various signals so we can stop the trains in case we get terminated
 112         catch_signal(SIGINT);
 113         catch_signal(SIGTERM);
 114         catch_signal(SIGSEGV);
 115         catch_signal(SIGILL);
 116         catch_signal(SIGFPE);
 117         catch_signal(SIGABRT);
 118 }
 119
 120 Engineer::~Engineer()
 121 {
 122         const map<unsigned, Train *> &trains = layout.get_trains();
 123         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 124                 layout.get_driver().set_loco_speed(i->first, 0);
 125         layout.get_driver().flush();
 126
 127         if(!options.simulate)
 128                 layout.save_trains("engineer.state");
 129
 130         delete overlay;
 131         delete root;
 132
 133         delete server;
 134 }
 135
 136 void Engineer::set_status(const string &text)
 137 {
 138         main_panel->set_status_text(text);
 139         status_timeout = Time::now()+10*Time::sec;
 140 }
 141
 142 void Engineer::rearrange_panels()
 143 {
 144         int y = main_panel->get_geometry().y;
 145         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 146         {
 147                 y -= (*i)->get_geometry().h;
 148                 (*i)->set_position(0, y);
 149         }
 150 }
 151
 152 void Engineer::add_train_view(TrainView &tv)
 153 {
 154         train_views.push_back(&tv);
 155 }
 156
 157 void Engineer::remove_train_view(TrainView &tv)
 158 {
 159         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 160 }
 161
 162 void Engineer::pick(bool with_ep)
 163 {
 164         picking = true;
 165         picking_track = 0;
 166         picking_entry = (with_ep ? 0 : -1);
 167 }
 168
 169 int Engineer::main()
 170 {
 171         window.show();
 172
 173         return Application::main();
 174 }
 175
 176 void Engineer::tick()
 177 {
 178         window.get_display().tick();
 179
 180         layout.tick();
 181         event_disp.tick(Time::zero);
 182
 183         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 184                 (*i)->prepare();
 185
 186         if(status_timeout && Time::now()>status_timeout)
 187         {
 188                 main_panel->set_status_text(string());
 189                 status_timeout = Time::TimeStamp();
 190         }
 191
 192         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 193
 194         pipeline.render_all();
 195         {
 196                 GL::Bind depth(GL::DepthTest::lequal());
 197                 layout_3d.get_path_scene().render();
 198         }
 199         {
 200                 GL::Bind blend(GL::Blend::alpha());
 201                 overlay->render(0);
 202         }
 203
 204         if(pointer_moved)
 205         {
 206                 pointer_moved = false;
 207
 208                 if(picking)
 209                 {
 210                         Track3D *track = pick_track(pointer_x, window.get_height()-pointer_y-1);
 211                         if(track && &track->get_track()!=picking_track)
 212                         {
 213                                 picking_track = &track->get_track();
 214                                 if(picking_entry>=0)
 215                                         picking_entry = 0;
 216
 217                                 delete picking_path;
 218                                 picking_path = new Path3D(*track);
 219                                 if(picking_entry>=0)
 220                                         picking_path->set_mask(picking_track->get_type().get_endpoints()[picking_entry].paths);
 221                                 else
 222                                         picking_path->set_mask(picking_track->get_type().get_paths());
 223                                 picking_path->set_color(GL::Color(0));
 224                                 picking_path->set_layer(1);
 225                         }
 226                 }
 227         }
 228
 229         if(picking && picking_track && picking_entry>=0)
 230         {
 231                 GL::PushMatrix push_mat;
 232
 233                 float rot = picking_track->get_endpoint_direction(picking_entry);
 234                 Point pos = picking_track->get_endpoint_position(picking_entry);
 235
 236                 GL::translate(pos.x, pos.y, pos.z+0.03);
 237                 GL::rotate(rot*180/M_PI+180, 0, 0, 1);
 238
 239                 arrow_mesh.draw();
 240         }
 241
 242         const GLtk::Geometry &rgeom = root->get_geometry();
 243         GL::matrix_mode(GL::PROJECTION);
 244         GL::load_identity();
 245         GL::ortho_bottomleft(rgeom.w, rgeom.h);
 246         GL::matrix_mode(GL::MODELVIEW);
 247         GL::load_identity();
 248
 249         {
 250                 GL::Bind blend(GL::Blend::alpha());
 251                 root->render();
 252                 GL::Texture::unbind();
 253         }
 254
 255         window.swap_buffers();
 256 }
 257
 258 void Engineer::button_press(int x, int y, unsigned btn, unsigned)
 259 {
 260         if(picking)
 261         {
 262                 if(btn==1 && picking_track)
 263                 {
 264                         picking = false;
 265                         delete picking_path;
 266                         picking_path = 0;
 267                         signal_pick_done.emit(picking_track, picking_entry);
 268                 }
 269                 else if(btn==3 && picking_entry>=0)
 270                 {
 271                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 272                         picking_path->set_mask(picking_track->get_type().get_endpoints()[picking_entry].paths);
 273                 }
 274         }
 275         else
 276         {
 277                 Track3D *t3d = pick_track(x, window.get_height()-y-1);
 278                 if(t3d)
 279                 {
 280                         Track &track = t3d->get_track();
 281                         if(track.get_turnout_id())
 282                         {
 283                                 Block &block = layout.get_block_by_track(track);
 284                                 if(block.get_train() && !block.get_train()->free_block(block))
 285                                         set_status("Turnout is busy");
 286                                 else
 287                                 {
 288                                         unsigned paths = track.get_type().get_paths();
 289                                         unsigned i = track.get_active_path()+1;
 290                                         while(!(paths&(1<<i)))
 291                                         {
 292                                                 if(!(paths>>i))
 293                                                         i = 0;
 294                                                 else
 295                                                         ++i;
 296                                         }
 297                                         track.set_active_path(i);
 298                                         set_status(format("Turnout %d", track.get_turnout_id()));
 299                                 }
 300                         }
 301                         if(unsigned sid = track.get_sensor_id())
 302                         {
 303                                 if(options.simulate)
 304                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 305                                 set_status(format("Sensor %d", sid));
 306                         }
 307                 }
 308         }
 309 }
 310
 311 void Engineer::pointer_motion(int x, int y)
 312 {
 313         pointer_x = x;
 314         pointer_y = y;
 315         pointer_moved = true;
 316 }
 317
 318 void Engineer::view_all()
 319 {
 320         const list<Track3D *> &tracks = layout_3d.get_tracks();
 321
 322         float view_aspect = float(window.get_width()-200)/window.get_height();
 323         float view_height = tan(camera.get_field_of_view()/2)*2;
 324         float best_score = 0;
 325         GL::Vector3 pos;
 326         GL::Vector3 up;
 327         for(float angle=0; angle<M_PI; angle+=0.01)
 328         {
 329                 float min_x = 0;
 330                 float max_x = 0;
 331                 float min_y = 0;
 332                 float max_y = 0;
 333                 for(list<Track3D *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 334                 {
 335                         Point minp, maxp;
 336                         (*i)->get_bounds(angle, minp, maxp);
 337                         min_x = min(min_x, minp.x);
 338                         max_x = max(max_x, maxp.x);
 339                         min_y = min(min_y, minp.y);
 340                         max_y = max(max_y, maxp.y);
 341                 }
 342
 343                 float width = max_x-min_x;
 344                 float height = max_y-min_y;
 345                 float aspect = width/height;
 346                 float score = min(aspect/view_aspect, view_aspect/aspect);
 347
 348                 if(score>best_score)
 349                 {
 350                         best_score = score;
 351
 352                         float size = max(width/view_aspect, height);
 353                         float c = cos(angle);
 354                         float s = sin(angle);
 355                         float x = (min_x+max_x)/2-size*105/window.get_height();
 356                         float y = (min_y+max_y)/2;
 357                         float z = max(size*1.05/view_height, 0.15);
 358
 359                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 360                         up = GL::Vector3(-s, c, 0);
 361                 }
 362         }
 363
 364         camera.set_position(pos);
 365         camera.set_up_direction(up);
 366         camera.set_look_direction(GL::Vector3(0, 0, -1));
 367         camera.set_aspect(float(window.get_width())/window.get_height());
 368         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 369 }
 370
 371 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 372 {
 373         const set<Track *> &tracks = block.get_tracks();
 374         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 375                 layout_3d.get_track(**i).get_path().set_color(color);
 376 }
 377
 378 void Engineer::reset_block_color(const Block &block)
 379 {
 380         bool active = false;
 381         if(unsigned sid=block.get_sensor_id())
 382                 active = layout.get_driver().get_sensor(sid);
 383
 384         if(block.get_train())
 385         {
 386                 GL::Color color;
 387                 map<Train *, GL::Color>::iterator i = train_colors.find(block.get_train());
 388                 if(i!=train_colors.end())
 389                         color = i->second;
 390
 391                 if(active)
 392                         set_block_color(block, color*0.6);
 393                 else
 394                         set_block_color(block, color*0.5+0.5);
 395         }
 396         else if(active)
 397                 set_block_color(block, GL::Color(0.6));
 398         else
 399                 set_block_color(block, GL::Color(1));
 400 }
 401
 402 void Engineer::sensor_event(unsigned addr, bool)
 403 {
 404         const set<Block *> &blocks = layout.get_blocks();
 405         for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
 406                 if((*i)->get_sensor_id()==addr)
 407                         reset_block_color(**i);
 408 }
 409
 410 void Engineer::block_reserved(const Block &block, const Train *)
 411 {
 412         reset_block_color(block);
 413 }
 414
 415 Track3D *Engineer::pick_track(int x, int y)
 416 {
 417         float view_height = tan(camera.get_field_of_view()/2)*2;
 418         float xx = ((float(x)-window.get_width()/2)/window.get_height())*view_height;
 419         float yy = (float(y)/window.get_height()-0.5)*view_height;
 420         float size = 4.0/window.get_height()*view_height;
 421
 422         camera.apply();
 423
 424         return layout_3d.pick_track(xx, yy, size);
 425 }
 426
 427 void Engineer::train_added(Train &train)
 428 {
 429         TrainPanel *tpanel = new TrainPanel(*this, ui_res, train);
 430         root->add(*tpanel);
 431         train_panels.push_back(tpanel);
 432         rearrange_panels();
 433
 434         Vehicle3D &loco3d = layout_3d.get_vehicle(train.get_vehicle(0));
 435         overlay->set_label(loco3d, train.get_name());
 436         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 437
 438         GL::Color best_color;
 439         float best_d_sq = 0;
 440         for(unsigned i=0; i<10; ++i)
 441         {
 442                 GL::Color color;
 443                 color.r = rand()*1.0/RAND_MAX;
 444                 color.g = rand()*1.0/RAND_MAX;
 445                 color.b = rand()*1.0/RAND_MAX;
 446                 color = color*(1/max(max(color.r, color.g), color.b));
 447                 float min_d_sq = 3;
 448                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 449                 {
 450                         float dr = color.r-j->second.r;
 451                         float dg = color.g-j->second.g;
 452                         float db = color.b-j->second.b;
 453                         float d_sq = dr*dr+dg*dg+db*db;
 454                         if(d_sq<min_d_sq)
 455                                 min_d_sq = d_sq;
 456                 }
 457                 if(min_d_sq>best_d_sq)
 458                 {
 459                         best_color = color;
 460                         best_d_sq = min_d_sq;
 461                 }
 462         }
 463         train_colors[&train] = best_color;
 464 }
 465
 466 void Engineer::sighandler(int sig)
 467 {
 468         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 469         {
 470                 signal(sig, SIG_DFL);
 471                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 472                 const map<unsigned, Train *> &trains = layout.get_trains();
 473                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 474                         layout.get_driver().set_loco_speed(i->first, 0);
 475                 layout.get_driver().flush();
 476                 raise(sig);
 477         }
 478         else if(sig==SIGTERM || sig==SIGINT)
 479                 exit(0);
 480 }