source/engineer/engineer.cpp

   1 /* $Id$
   2
   3 This file is part of R²C²
   4 Copyright © 2006-2011 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/fs/utils.h>
  16 #include <msp/gbase/display.h>
  17 #include <msp/gbase/window.h>
  18 #include <msp/gl/blend.h>
  19 #include <msp/gl/framebuffer.h>
  20 #include <msp/gl/matrix.h>
  21 #include <msp/gl/misc.h>
  22 #include <msp/gl/projection.h>
  23 #include <msp/gl/tests.h>
  24 #include <msp/gl/transform.h>
  25 #include <msp/io/print.h>
  26 #include <msp/strings/formatter.h>
  27 #include <msp/time/units.h>
  28 #include <msp/time/utils.h>
  29 #include "libr2c2/driver.h"
  30 #include "libr2c2/tracktype.h"
  31 #include "3d/path.h"
  32 #include "3d/track.h"
  33 #include "3d/vehicle.h"
  34 #include "engineer.h"
  35 #include "mainpanel.h"
  36 #include "trainpanel.h"
  37 #include "trainproperties.h"
  38 #include "trainview.h"
  39
  40 using namespace std;
  41 using namespace R2C2;
  42 using namespace Msp;
  43
  44 Application::RegApp<Engineer> Engineer::reg;
  45
  46 Engineer::Engineer(int argc, char **argv):
  47         options(argc, argv),
  48         window(options.screen_w, options.screen_h, options.fullscreen),
  49         layout(catalogue, (options.driver.empty() ? 0 : Driver::create(options.driver))),
  50         layout_3d(layout),
  51         server(0),
  52         pipeline(window.get_width(), window.get_height(), false),
  53         picking(false),
  54         picking_track(0),
  55         picking_entry(0),
  56         picking_path(0),
  57         pointer_x(0),
  58         pointer_y(0),
  59         pointer_moved(false)
  60 {
  61         // Setup GUI
  62         window.set_title("Railroad Engineer");
  63         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Engineer::exit), 0));
  64
  65         DataFile::load(ui_res, "r2c2.res");
  66         root = new GLtk::Root(ui_res, window);
  67         root->signal_button_press.connect(sigc::mem_fun(this, &Engineer::button_press));
  68         root->signal_pointer_motion.connect(sigc::mem_fun(this, &Engineer::pointer_motion));
  69         root->set_visible(true);
  70
  71         main_panel = new MainPanel(*this);
  72         root->add(*main_panel);
  73         main_panel->set_position(0, window.get_height()-main_panel->get_geometry().h);
  74         main_panel->set_visible(true);
  75
  76         overlay = new Overlay3D(ui_res.get_default_font());
  77
  78         // Setup railroad control
  79         DataFile::load(catalogue, "tracks.dat");
  80         DataFile::load(catalogue, "locos.dat");
  81         DataFile::load(catalogue, "wagons.dat");
  82         DataFile::load(layout, options.layout_fn);
  83
  84         layout.signal_train_added.connect(sigc::mem_fun(this, &Engineer::train_added));
  85         layout.signal_block_reserved.connect(sigc::mem_fun(this, &Engineer::block_reserved));
  86         layout.signal_emergency.connect(sigc::mem_fun(this, &Engineer::set_status));
  87         layout.get_driver().signal_sensor.connect(sigc::mem_fun(this, &Engineer::sensor_event));
  88         if(FS::exists(options.state_fn))
  89                 DataFile::load(layout, options.state_fn);
  90
  91         if(options.network)
  92         {
  93                 server = new Server(layout);
  94                 server->use_event_dispatcher(event_disp);
  95         }
  96
  97         // Setup 3D view
  98         DataFile::load(arrow_mesh, "arrow.mesh");
  99
 100         pipeline.set_camera(&camera);
 101         pipeline.add_renderable_for_pass(layout_3d.get_scene(), 0);
 102         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
 103         pipeline.add_renderable_for_pass(*overlay, "unlit");
 104
 105         light.set_position(GL::Vector4(0, -0.259, 0.966, 0));
 106         light.set_diffuse(GL::Color(0.9));
 107         lighting.set_ambient(GL::Color(0.4));
 108         lighting.attach(0, light);
 109
 110         GL::PipelinePass *pass = &pipeline.add_pass(0);
 111         pass->depth_test = &GL::DepthTest::lequal();
 112         pass->lighting = &lighting;
 113
 114         pass = &pipeline.add_pass("unlit");
 115         pass->depth_test = &GL::DepthTest::lequal();
 116
 117         view_all();
 118
 119         // Catch various signals so we can stop the trains in case we get terminated
 120         catch_signal(SIGINT);
 121         catch_signal(SIGTERM);
 122         catch_signal(SIGSEGV);
 123         catch_signal(SIGILL);
 124         catch_signal(SIGFPE);
 125         catch_signal(SIGABRT);
 126 }
 127
 128 Engineer::~Engineer()
 129 {
 130         const map<unsigned, Train *> &trains = layout.get_trains();
 131         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 132                 layout.get_driver().set_loco_speed(i->first, 0);
 133         layout.get_driver().flush();
 134
 135         if(!options.simulate)
 136         {
 137                 layout.save_dynamic(options.state_fn+".tmp");
 138                 FS::rename(options.state_fn+".tmp", options.state_fn);
 139         }
 140
 141         delete overlay;
 142         delete root;
 143
 144         delete server;
 145 }
 146
 147 void Engineer::set_status(const string &text)
 148 {
 149         main_panel->set_status_text(text);
 150         status_timeout = Time::now()+10*Time::sec;
 151 }
 152
 153 void Engineer::rearrange_panels()
 154 {
 155         int y = main_panel->get_geometry().y;
 156         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 157         {
 158                 y -= (*i)->get_geometry().h;
 159                 (*i)->set_position(0, y);
 160         }
 161 }
 162
 163 void Engineer::add_train_view(TrainView &tv)
 164 {
 165         train_views.push_back(&tv);
 166 }
 167
 168 void Engineer::remove_train_view(TrainView &tv)
 169 {
 170         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 171 }
 172
 173 void Engineer::pick(bool with_ep)
 174 {
 175         picking = true;
 176         picking_track = 0;
 177         picking_entry = (with_ep ? 0 : -1);
 178 }
 179
 180 int Engineer::main()
 181 {
 182         window.show();
 183
 184         return Application::main();
 185 }
 186
 187 void Engineer::tick()
 188 {
 189         window.get_display().tick();
 190
 191         layout.tick();
 192         event_disp.tick(Time::zero);
 193
 194         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 195                 (*i)->prepare();
 196
 197         if(status_timeout && Time::now()>status_timeout)
 198         {
 199                 main_panel->set_status_text(string());
 200                 status_timeout = Time::TimeStamp();
 201         }
 202
 203         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 204
 205         pipeline.render_all();
 206
 207         if(pointer_moved)
 208         {
 209                 pointer_moved = false;
 210
 211                 if(picking)
 212                 {
 213                         Track *track = pick_track(pointer_x, window.get_height()-pointer_y-1);
 214                         if(track && track!=picking_track)
 215                         {
 216                                 picking_track = track;
 217                                 if(picking_entry>=0)
 218                                         picking_entry = 0;
 219
 220                                 delete picking_path;
 221                                 picking_path = new Path3D(layout_3d.get_track(*track));
 222                                 if(picking_entry>=0)
 223                                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 224                                 else
 225                                         picking_path->set_mask(picking_track->get_type().get_paths());
 226                                 picking_path->set_color(GL::Color(0));
 227                                 picking_path->set_layer(1);
 228                         }
 229                 }
 230         }
 231
 232         if(picking && picking_track && picking_entry>=0)
 233         {
 234                 GL::PushMatrix push_mat;
 235
 236                 float rot = picking_track->get_endpoint_direction(picking_entry);
 237                 Vector pos = picking_track->get_endpoint_position(picking_entry);
 238
 239                 GL::translate(pos.x, pos.y, pos.z+0.03);
 240                 GL::rotate(rot*180/M_PI+180, 0, 0, 1);
 241
 242                 arrow_mesh.draw();
 243         }
 244
 245         const GLtk::Geometry &rgeom = root->get_geometry();
 246         GL::matrix_mode(GL::PROJECTION);
 247         GL::load_identity();
 248         GL::ortho_bottomleft(rgeom.w, rgeom.h);
 249         GL::matrix_mode(GL::MODELVIEW);
 250         GL::load_identity();
 251
 252         {
 253                 GL::Bind blend(GL::Blend::alpha());
 254                 root->render();
 255                 GL::Texture::unbind();
 256         }
 257
 258         window.swap_buffers();
 259 }
 260
 261 void Engineer::button_press(int x, int y, unsigned btn, unsigned)
 262 {
 263         if(picking)
 264         {
 265                 if(btn==1 && picking_track)
 266                 {
 267                         picking = false;
 268                         delete picking_path;
 269                         picking_path = 0;
 270                         signal_pick_done.emit(picking_track, picking_entry);
 271                 }
 272                 else if(btn==3 && picking_entry>=0)
 273                 {
 274                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 275                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 276                 }
 277         }
 278         else
 279         {
 280                 Track *track = pick_track(x, window.get_height()-y-1);
 281                 if(track)
 282                 {
 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                         Vector 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 Track *Engineer::pick_track(int x, int y)
 418 {
 419         const GL::Vector3 &start = camera.get_position();
 420         float xx = x*2.0/window.get_width()-1.0;
 421         float yy = y*2.0/window.get_height()-1.0;
 422         GL::Vector4 ray = camera.unproject(GL::Vector4(xx, yy, 0, 0));
 423
 424         return layout.pick_track(Vector(start.x, start.y, start.z), Vector(ray.x, ray.y, ray.z));
 425 }
 426
 427 void Engineer::train_added(Train &train)
 428 {
 429         TrainPanel *tpanel = new TrainPanel(*this, 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 }