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