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