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::hide<1>(sigc::mem_fun(this, &Engineer::reset_block_color)));
  86         layout.signal_block_state_changed.connect(sigc::hide<1>(sigc::mem_fun(this, &Engineer::reset_block_color)));
  87         layout.signal_emergency.connect(sigc::mem_fun(this, &Engineer::set_status));
  88
  89         if(FS::exists(options.state_fn))
  90                 DataFile::load(layout, options.state_fn);
  91
  92         if(options.network)
  93         {
  94                 server = new Server(layout);
  95                 server->use_event_dispatcher(event_disp);
  96         }
  97
  98         // Setup 3D view
  99         DataFile::load(arrow_mesh, "arrow.mesh");
 100
 101         pipeline.set_camera(&camera);
 102         pipeline.add_renderable_for_pass(layout_3d.get_scene(), 0);
 103         pipeline.add_renderable_for_pass(layout_3d.get_path_scene(), "unlit");
 104         pipeline.add_renderable_for_pass(*overlay, "overlay");
 105
 106         light.set_position(GL::Vector4(0, -0.259, 0.966, 0));
 107         light.set_diffuse(GL::Color(0.9));
 108         lighting.set_ambient(GL::Color(0.4));
 109         lighting.attach(0, light);
 110
 111         GL::PipelinePass *pass = &pipeline.add_pass(0);
 112         pass->depth_test = &GL::DepthTest::lequal();
 113         pass->lighting = &lighting;
 114
 115         pass = &pipeline.add_pass("unlit");
 116         pass->depth_test = &GL::DepthTest::lequal();
 117
 118         pass = &pipeline.add_pass("overlay");
 119         pass->blend = &GL::Blend::alpha();
 120
 121         view_all();
 122
 123         // Catch various signals so we can stop the trains in case we get terminated
 124         catch_signal(SIGINT);
 125         catch_signal(SIGTERM);
 126         catch_signal(SIGSEGV);
 127         catch_signal(SIGILL);
 128         catch_signal(SIGFPE);
 129         catch_signal(SIGABRT);
 130 }
 131
 132 Engineer::~Engineer()
 133 {
 134         const map<unsigned, Train *> &trains = layout.get_trains();
 135         for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 136                 layout.get_driver().set_loco_speed(i->first, 0);
 137         layout.get_driver().flush();
 138
 139         if(!options.simulate)
 140         {
 141                 layout.save_dynamic(options.state_fn+".tmp");
 142                 FS::rename(options.state_fn+".tmp", options.state_fn);
 143         }
 144
 145         delete overlay;
 146         delete root;
 147
 148         delete server;
 149 }
 150
 151 void Engineer::set_status(const string &text)
 152 {
 153         main_panel->set_status_text(text);
 154         status_timeout = Time::now()+10*Time::sec;
 155 }
 156
 157 void Engineer::rearrange_panels()
 158 {
 159         int y = main_panel->get_geometry().y;
 160         for(list<TrainPanel *>::iterator i=train_panels.begin(); i!=train_panels.end(); ++i)
 161         {
 162                 y -= (*i)->get_geometry().h;
 163                 (*i)->set_position(0, y);
 164         }
 165 }
 166
 167 void Engineer::add_train_view(TrainView &tv)
 168 {
 169         train_views.push_back(&tv);
 170 }
 171
 172 void Engineer::remove_train_view(TrainView &tv)
 173 {
 174         train_views.erase(remove(train_views.begin(), train_views.end(), &tv), train_views.end());
 175 }
 176
 177 void Engineer::pick(bool with_ep)
 178 {
 179         picking = true;
 180         picking_track = 0;
 181         picking_entry = (with_ep ? 0 : -1);
 182 }
 183
 184 int Engineer::main()
 185 {
 186         window.show();
 187
 188         return Application::main();
 189 }
 190
 191 void Engineer::tick()
 192 {
 193         window.get_display().tick();
 194
 195         layout.tick();
 196         event_disp.tick(Time::zero);
 197
 198         for(list<TrainView *>::iterator i=train_views.begin(); i!=train_views.end(); ++i)
 199                 (*i)->prepare();
 200
 201         if(status_timeout && Time::now()>status_timeout)
 202         {
 203                 main_panel->set_status_text(string());
 204                 status_timeout = Time::TimeStamp();
 205         }
 206
 207         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 208
 209         pipeline.render_all();
 210
 211         if(pointer_moved)
 212         {
 213                 pointer_moved = false;
 214
 215                 if(picking)
 216                 {
 217                         Track *track = pick_track(pointer_x, window.get_height()-pointer_y-1);
 218                         if(track && track!=picking_track)
 219                         {
 220                                 picking_track = track;
 221                                 if(picking_entry>=0)
 222                                         picking_entry = 0;
 223
 224                                 delete picking_path;
 225                                 picking_path = new Path3D(layout_3d.get_track(*track));
 226                                 if(picking_entry>=0)
 227                                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 228                                 else
 229                                         picking_path->set_mask(picking_track->get_type().get_paths());
 230                                 picking_path->set_color(GL::Color(0));
 231                                 picking_path->set_layer(1);
 232                         }
 233                 }
 234         }
 235
 236         if(picking && picking_track && picking_entry>=0)
 237         {
 238                 GL::PushMatrix push_mat;
 239
 240                 float rot = picking_track->get_endpoint_direction(picking_entry);
 241                 Vector pos = picking_track->get_endpoint_position(picking_entry);
 242
 243                 GL::translate(pos.x, pos.y, pos.z+0.03);
 244                 GL::rotate(rot*180/M_PI+180, 0, 0, 1);
 245
 246                 arrow_mesh.draw();
 247         }
 248
 249         const GLtk::Geometry &rgeom = root->get_geometry();
 250         GL::matrix_mode(GL::PROJECTION);
 251         GL::load_identity();
 252         GL::ortho_bottomleft(rgeom.w, rgeom.h);
 253         GL::matrix_mode(GL::MODELVIEW);
 254         GL::load_identity();
 255
 256         {
 257                 GL::Bind blend(GL::Blend::alpha());
 258                 root->render();
 259                 GL::Texture::unbind();
 260         }
 261
 262         window.swap_buffers();
 263 }
 264
 265 void Engineer::button_press(int x, int y, unsigned btn, unsigned)
 266 {
 267         if(picking)
 268         {
 269                 if(btn==1 && picking_track)
 270                 {
 271                         picking = false;
 272                         delete picking_path;
 273                         picking_path = 0;
 274                         signal_pick_done.emit(picking_track, picking_entry);
 275                 }
 276                 else if(btn==3 && picking_entry>=0)
 277                 {
 278                         picking_entry = (picking_entry+1)%picking_track->get_type().get_endpoints().size();
 279                         picking_path->set_mask(picking_track->get_type().get_endpoint(picking_entry).paths);
 280                 }
 281         }
 282         else
 283         {
 284                 Track *track = pick_track(x, window.get_height()-y-1);
 285                 if(track)
 286                 {
 287                         if(track->get_turnout_id())
 288                         {
 289                                 Block &block = track->get_block();
 290                                 if(block.get_train() && !block.get_train()->free_block(block))
 291                                         set_status("Turnout is busy");
 292                                 else
 293                                 {
 294                                         unsigned paths = track->get_type().get_paths();
 295                                         unsigned i = track->get_active_path()+1;
 296                                         while(!(paths&(1<<i)))
 297                                         {
 298                                                 if(!(paths>>i))
 299                                                         i = 0;
 300                                                 else
 301                                                         ++i;
 302                                         }
 303                                         track->set_active_path(i);
 304                                         set_status(format("Turnout %d", track->get_turnout_id()));
 305                                 }
 306                         }
 307                         if(unsigned sid = track->get_sensor_id())
 308                         {
 309                                 if(options.simulate)
 310                                         layout.get_driver().set_sensor(sid, !layout.get_driver().get_sensor(sid));
 311                                 set_status(format("Sensor %d", sid));
 312                         }
 313                 }
 314         }
 315 }
 316
 317 void Engineer::pointer_motion(int x, int y)
 318 {
 319         pointer_x = x;
 320         pointer_y = y;
 321         pointer_moved = true;
 322 }
 323
 324 void Engineer::view_all()
 325 {
 326         const Layout3D::TrackMap &tracks = layout_3d.get_tracks();
 327
 328         float view_aspect = float(window.get_width()-200)/window.get_height();
 329         float view_height = tan(camera.get_field_of_view()/2)*2;
 330         float best_score = 0;
 331         GL::Vector3 pos;
 332         GL::Vector3 up;
 333         for(float angle=0; angle<M_PI; angle+=0.01)
 334         {
 335                 float min_x = 0;
 336                 float max_x = 0;
 337                 float min_y = 0;
 338                 float max_y = 0;
 339                 for(Layout3D::TrackMap::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 340                 {
 341                         Vector minp, maxp;
 342                         i->second->get_bounds(angle, minp, maxp);
 343                         min_x = min(min_x, minp.x);
 344                         max_x = max(max_x, maxp.x);
 345                         min_y = min(min_y, minp.y);
 346                         max_y = max(max_y, maxp.y);
 347                 }
 348
 349                 float width = max_x-min_x;
 350                 float height = max_y-min_y;
 351                 float aspect = width/height;
 352                 float score = min(aspect/view_aspect, view_aspect/aspect);
 353
 354                 if(score>best_score)
 355                 {
 356                         best_score = score;
 357
 358                         float size = max(width/view_aspect, height);
 359                         float c = cos(angle);
 360                         float s = sin(angle);
 361                         float x = (min_x+max_x)/2-size*105/window.get_height();
 362                         float y = (min_y+max_y)/2;
 363                         float z = max(size*1.05/view_height, 0.15);
 364
 365                         pos = GL::Vector3(c*x-s*y, s*x+c*y, z);
 366                         up = GL::Vector3(-s, c, 0);
 367                 }
 368         }
 369
 370         camera.set_position(pos);
 371         camera.set_up_direction(up);
 372         camera.set_look_direction(GL::Vector3(0, 0, -1));
 373         camera.set_aspect(float(window.get_width())/window.get_height());
 374         camera.set_depth_clip(pos.z*0.5, pos.z*1.5);
 375 }
 376
 377 void Engineer::set_block_color(const Block &block, const GL::Color &color)
 378 {
 379         const set<Track *> &tracks = block.get_tracks();
 380         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 381                 layout_3d.get_track(**i).get_path().set_color(color);
 382 }
 383
 384 void Engineer::reset_block_color(const Block &block)
 385 {
 386         bool active = block.get_state()>Block::INACTIVE;
 387
 388         if(block.get_train())
 389         {
 390                 GL::Color color;
 391                 map<Train *, GL::Color>::iterator i = train_colors.find(block.get_train());
 392                 if(i!=train_colors.end())
 393                         color = i->second;
 394
 395                 if(active)
 396                         set_block_color(block, color*0.6);
 397                 else
 398                         set_block_color(block, color*0.5+0.5);
 399         }
 400         else if(active)
 401                 set_block_color(block, GL::Color(0.6));
 402         else
 403                 set_block_color(block, GL::Color(1));
 404 }
 405
 406 Track *Engineer::pick_track(int x, int y)
 407 {
 408         const GL::Vector3 &start = camera.get_position();
 409         float xx = x*2.0/window.get_width()-1.0;
 410         float yy = y*2.0/window.get_height()-1.0;
 411         GL::Vector4 ray = camera.unproject(GL::Vector4(xx, yy, 0, 0));
 412
 413         return layout.pick_track(Vector(start.x, start.y, start.z), Vector(ray.x, ray.y, ray.z));
 414 }
 415
 416 void Engineer::train_added(Train &train)
 417 {
 418         TrainPanel *tpanel = new TrainPanel(*this, train);
 419         root->add(*tpanel);
 420         train_panels.push_back(tpanel);
 421         rearrange_panels();
 422
 423         Vehicle3D &loco3d = layout_3d.get_vehicle(train.get_vehicle(0));
 424         overlay->set_label(loco3d, train.get_name());
 425         train.signal_name_changed.connect(sigc::bind<0>(sigc::mem_fun(overlay, &Overlay3D::set_label), sigc::ref(loco3d)));
 426
 427         GL::Color best_color;
 428         float best_d_sq = 0;
 429         for(unsigned i=0; i<10; ++i)
 430         {
 431                 GL::Color color;
 432                 color.r = rand()*1.0/RAND_MAX;
 433                 color.g = rand()*1.0/RAND_MAX;
 434                 color.b = rand()*1.0/RAND_MAX;
 435                 color = color*(1/max(max(color.r, color.g), color.b));
 436                 float min_d_sq = 3;
 437                 for(map<Train *, GL::Color>::const_iterator j=train_colors.begin(); j!=train_colors.end(); ++j)
 438                 {
 439                         float dr = color.r-j->second.r;
 440                         float dg = color.g-j->second.g;
 441                         float db = color.b-j->second.b;
 442                         float d_sq = dr*dr+dg*dg+db*db;
 443                         if(d_sq<min_d_sq)
 444                                 min_d_sq = d_sq;
 445                 }
 446                 if(min_d_sq>best_d_sq)
 447                 {
 448                         best_color = color;
 449                         best_d_sq = min_d_sq;
 450                 }
 451         }
 452         train_colors[&train] = best_color;
 453 }
 454
 455 void Engineer::sighandler(int sig)
 456 {
 457         if(sig==SIGSEGV || sig==SIGILL || sig==SIGFPE || sig==SIGABRT)
 458         {
 459                 signal(sig, SIG_DFL);
 460                 IO::print(IO::cerr, "Fatal signal received, terminating\n");
 461                 const map<unsigned, Train *> &trains = layout.get_trains();
 462                 for(map<unsigned, Train *>::const_iterator i=trains.begin(); i!=trains.end(); ++i)
 463                         layout.get_driver().set_loco_speed(i->first, 0);
 464                 layout.get_driver().flush();
 465                 raise(sig);
 466         }
 467         else if(sig==SIGTERM || sig==SIGINT)
 468                 exit(0);
 469 }