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 <limits>
  10 #include <signal.h>
  11 #include <msp/core/except.h>
  12 #include <msp/fs/stat.h>
  13 #include <msp/gbase/display.h>
  14 #include <msp/gbase/window.h>
  15 #include <msp/gl/blend.h>
  16 #include <msp/gl/framebuffer.h>
  17 #include <msp/gl/matrix.h>
  18 #include <msp/gl/misc.h>
  19 #include <msp/gl/projection.h>
  20 #include <msp/gl/tests.h>
  21 #include <msp/gl/transform.h>
  22 #include <msp/io/print.h>
  23 #include <msp/strings/formatter.h>
  24 #include <msp/time/units.h>
  25 #include "libmarklin/driver.h"
  26 #include "libmarklin/tracktype.h"
  27 #include "3d/path.h"
  28 #include "engineer.h"
  29 #include "mainpanel.h"
  30 #include "trainpanel.h"
  31 #include "trainproperties.h"
  32
  33 using namespace std;
  34 using namespace Marklin;
  35 using namespace Msp;
  36
  37 Engineer::Engineer(int argc, char **argv):
  38         options(argc, argv),
  39         window(options.screen_w, options.screen_h, options.fullscreen),
  40         layout(catalogue, (options.driver.empty() ? 0 : Driver::create(options.driver))),
  41         layout_3d(layout),
  42         server(0),
  43         pipeline(window.get_width(), window.get_height(), false),
  44         placing_train(0),
  45         placing_block(0),
  46         placing_entry(0)
  47 {
  48         // Setup GUI
  49         window.set_title("Railroad Engineer");
  50         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  51
  52         DataFile::load(ui_res, "marklin.res");
  53         root = new GLtk::Root(ui_res, window);
  54         root->signal_button_press.connect(sigc::mem_fun(this, &Engineer::button_press));
  55         root->signal_pointer_motion.connect(sigc::mem_fun(this, &Engineer::pointer_motion));
  56         root->set_visible(true);
  57
  58         main_panel = new MainPanel(*this, ui_res);
  59         root->add(*main_panel);
  60         main_panel->set_position(0, window.get_height()-main_panel->get_geometry().h);
  61         main_panel->set_visible(true);
  62
  63         // Setup railroad control
  64         DataFile::load(catalogue, "tracks.dat");
  65         DataFile::load(catalogue, "locos.dat");
  66         DataFile::load(layout, options.layout_fn);
  67
  68         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  69         layout.signal_block_reserved.connect(sigc::mem_fun(this, &Engineer::block_reserved));
  70         if(FS::exists("engineer.state"))
  71                 DataFile::load(layout, "engineer.state");
  72
  73         if(options.network)
  74         {
  75                 server = new Server(layout);
  76                 server->use_event_dispatcher(event_disp);
  77         }
  78
  79         layout.get_driver().signal_sensor.connect(sigc::mem_fun(this, &Engineer::sensor_event));
  80
  81         // Setup 3D view
  82         DataFile::load(arrow_mesh, "arrow.mesh");
  83
  84         overlay = new Overlay3D(window, camera, ui_res.get_default_font());
  85
  86         pipeline.set_camera(&camera);
  87         pipeline.add_renderable(layout_3d.get_scene());
  88
  89         light.set_position(0, -0.259, 0.966, 0);
  90         lighting.attach(0, light);
  91
  92         GL::PipelinePass &pass = pipeline.add_pass(0);
  93         pass.depth_test = &GL::DepthTest::lequal();
  94         pass.lighting = &lighting;
  95
  96         view_all();
  97
  98         // Catch various signals so we can stop the trains in case we get terminated
  99         catch_signal(SIGINT);
 100         catch_signal(SIGTERM);
 101         catch_signal(SIGSEGV);
 102         catch_signal(SIGILL);
 103         catch_signal(SIGFPE);
 104         catch_signal(SIGABRT);
 105 }
 106
 107 Engineer::~Engineer()
 108 {
 109         const map<unsigned, Train *> &trains = layout.get_trains();
 110         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 111                 i->second->set_speed(0);
 112         layout.get_driver().flush();
 113
 114         if(!options.simulate)
 115                 layout.save_trains("engineer.state");
 116
 117         delete overlay;
 118         delete root;
 119
 120         delete server;
 121 }
 122
 123 void Engineer::place_train(Train &train)
 124 {
 125         placing_train = &train;
 126         placing_block = 0;
 127         main_panel->set_status_text("Select location");
 128 }
 129
 130 int Engineer::main()
 131 {
 132         window.show();
 133
 134         return Application::main();
 135 }
 136
 137 void Engineer::tick()
 138 {
 139         window.get_display().tick();
 140
 141         layout.tick();
 142         event_disp.tick(Time::zero);
 143
 144         for(list<Train *>::iterator i=new_trains.begin(); i!=new_trains.end(); ++i)
 145                 overlay->set_label(layout_3d.get_train(**i), (*i)->get_name());
 146         new_trains.clear();
 147
 148         GL::clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 149
 150         pipeline.render_all();
 151         layout_3d.get_path_scene().render();
 152         {
 153                 GL::Bind blend(GL::Blend::alpha());
 154                 overlay->render(0);
 155         }
 156
 157         if(placing_train && placing_block)
 158         {
 159                 GL::PushMatrix push_mat;
 160
 161                 const Marklin::Block::Endpoint &bep = placing_block->get_endpoints()[placing_entry];
 162                 float rot = bep.track->get_endpoint_direction(bep.track_ep);
 163                 Point pos = bep.track->get_endpoint_position(bep.track_ep);
 164
 165                 GL::translate(pos.x, pos.y, pos.z+0.03);
 166                 GL::rotate(rot*180/M_PI+180, 0, 0, 1);
 167
 168                 arrow_mesh.draw();
 169         }
 170
 171         const GLtk::Geometry &rgeom = root->get_geometry();
 172         GL::matrix_mode(GL::PROJECTION);
 173         GL::load_identity();
 174         GL::ortho_bottomleft(rgeom.w, rgeom.h);
 175         GL::matrix_mode(GL::MODELVIEW);
 176         GL::load_identity();
 177
 178         {
 179                 GL::Bind blend(GL::Blend::alpha());
 180                 root->render();
 181                 GL::Texture::unbind();
 182         }
 183
 184         window.swap_buffers();
 185 }
 186
 187 void Engineer::button_press(int x, int y, unsigned btn, unsigned)
 188 {
 189         if(placing_train)
 190         {
 191                 if(btn==1 && placing_block && !placing_block->get_train())
 192                 {
 193                         reset_block_color(*placing_block);
 194
 195                         placing_train->place(*placing_block, placing_entry);
 196                         placing_train = 0;
 197                         main_panel->set_status_text(string());
 198                 }
 199                 else if(btn==3)
 200                 {
 201                         const vector<Block::Endpoint> &endpoints = placing_block->get_endpoints();
 202                         placing_entry = (placing_entry+1)%endpoints.size();
 203                 }
 204         }
 205         else
 206         {
 207                 Track3D *t3d = pick_track(x, window.get_height()-y-1);
 208                 if(t3d)
 209                 {
 210                         Track &track = t3d->get_track();
 211                         if(track.get_turnout_id())
 212                         {
 213                                 Block &block = layout.get_block_by_track(track);
 214                                 if(block.get_train() && !block.get_train()->free_block(block))
 215                                         main_panel->set_status_text("Turnout busy");
 216                                 else
 217                                 {
 218                                         unsigned paths = track.get_type().get_paths();
 219                                         unsigned i = track.get_active_path()+1;
 220                                         while(!(paths&(1<<i)))
 221                                         {
 222                                                 if(!(paths>>i))
 223                                                         i = 0;
 224                                                 else
 225                                                         ++i;
 226                                         }
 227                                         track.set_active_path(i);
 228                                 }
 229                         }
 230                         /*else if(simulate)
 231                         {
 232                                 if(unsigned sid=track->get_track().get_sensor_id())
 233                                 {
 234                                         Sensor &sensor = control.get_sensor(sid);
 235                                         control.signal_sensor_event.emit(sid, !sensor.get_state());
 236                                 }
 237                         }*/
 238                 }
 239         }
 240 }
 241
 242 void Engineer::pointer_motion(int x, int y)
 243 {
 244         if(placing_train)
 245         {
 246                 Track3D *track = pick_track(x, window.get_height()-y-1);
 247                 if(track)
 248                 {
 249                         Block &block = layout.get_block_by_track(track->get_track());
 250                         if(&block!=placing_block)
 251                         {
 252                                 if(placing_block)
 253                                         reset_block_color(*placing_block);
 254                                 placing_block = &block;
 255                                 placing_entry = 0;
 256                                 set_block_color(*placing_block, GL::Color(0.5, 1, 0.7));
 257                         }
 258                 }
 259         }
 260 }
 261
 262 void Engineer::view_all()
 263 {
 264         const list<Track3D *> &tracks = layout_3d.get_tracks();
 265
 266         float view_aspect = float(window.get_width()-200)/window.get_height();
 267         float view_height = tan(camera.get_field_of_view()/2)*2;
 268         float best_score = 0;
 269         GL::Vector3 pos;
 270         GL::Vector3 up;
 271         for(float angle=0; angle<M_PI; angle+=0.01)
 272         {
 273                 float min_x = 0;
 274                 float max_x = 0;
 275                 float min_y = 0;
 276                 float max_y = 0;
 277                 for(list<Track3D *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 278                 {
 279                         Point minp, maxp;
 280                         (*i)->get_bounds(angle, minp, maxp);
 281                         min_x = min(min_x, minp.x);
 282                         max_x = max(max_x, maxp.x);
 283                         min_y = min(min_y, minp.y);
 284                         max_y = max(max_y, maxp.y);
 285                 }
 286
 287                 float width = max_x-min_x;
 288                 float height = max_y-min_y;
 289                 float aspect = width/height;
 290                 float score = min(aspect/view_aspect, view_aspect/aspect);
 291
 292                 if(score>best_score)
 293                 {
 294                         best_score = score;
 295
 296                         float size = max(width/view_aspect, height);
 297                         float c = cos(angle);
 298                         float s = sin(angle);
 299                         float x = (min_x+max_x)/2-size*105/window.get_height();
 300                         float y = (min_y+max_y)/2;
 301                         float z = max(size*1.05/view_height, 0.15);
 302
 303                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 304                         up = GL::Vector3(-s, c, 0);
 305                 }
 306         }
 307
 308         camera.set_position(pos);
 309         camera.set_up_direction(up);
 310         camera.set_look_direction(GL::Vector3(0, 0, -1));
 311 }
 312
 313 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 314 {
 315         const set<Track *> &tracks = block.get_tracks();
 316         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 317                 layout_3d.get_track(**i).get_path().set_color(color);
 318 }
 319
 320 void Engineer::reset_block_color(const Block &block)
 321 {
 322         if(unsigned sid=block.get_sensor_id())
 323         {
 324                 if(layout.get_driver().get_sensor(sid))
 325                 {
 326                         set_block_color(block, GL::Color(1, 0.5, 0.3));
 327                         return;
 328                 }
 329         }
 330
 331         if(block.get_train())
 332                 set_block_color(block, GL::Color(1, 1, 0.3));
 333         else
 334                 set_block_color(block, GL::Color(1, 1, 1));
 335 }
 336
 337 void Engineer::sensor_event(unsigned addr, bool)
 338 {
 339         const set<Block *> &blocks = layout.get_blocks();
 340         for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
 341                 if((*i)->get_sensor_id()==addr)
 342                         reset_block_color(**i);
 343 }
 344
 345 void Engineer::block_reserved(const Block &block, const Train *)
 346 {
 347         reset_block_color(block);
 348 }
 349
 350 Track3D *Engineer::pick_track(int x, int y)
 351 {
 352         float view_height = tan(camera.get_field_of_view()/2)*2;
 353         float xx = ((float(x)-window.get_width()/2)/window.get_height())*view_height;
 354         float yy = (float(y)/window.get_height()-0.5)*view_height;
 355         float size = 4.0/window.get_height()*view_height;
 356
 357         camera.apply();
 358
 359         return layout_3d.pick_track(xx, yy, size);
 360 }
 361
 362 void Engineer::train_added(Train &train)
 363 {
 364         TrainPanel *tpanel = new TrainPanel(*this, ui_res, train);
 365         root->add(*tpanel);
 366         int y = main_panel->get_geometry().y;
 367         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 368                 y -= (*i)->get_geometry().h;
 369         tpanel->set_position(0, y-tpanel->get_geometry().h);
 370         train_panels.push_back(tpanel);
 371         tpanel->set_visible(true);
 372
 373         new_trains.push_back(&train);
 374 }
 375
 376 void Engineer::sighandler(int sig)
 377 {
 378         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 379         {
 380                 signal(sig, SIG_DFL);
 381                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 382                 const map<unsigned, Train *> &trains = layout.get_trains();
 383                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 384                         i->second->set_speed(0);
 385                 layout.get_driver().flush();
 386                 raise(sig);
 387         }
 388         else if(sig==SIGTERM || sig==SIGINT)
 389                 exit(0);
 390 }
 391
 392 Application::RegApp<Engineer> Engineer::reg;