src/Main/keyboard.cxx

   1 // keyboard.cxx -- handle GLUT keyboard events
   2 //
   3 // Written by Curtis Olson, started May 1997.
   4 //
   5 // Copyright (C) 1997 - 1999  Curtis L. Olson  - curt@flightgear.org
   6 //
   7 // This program is free software; you can redistribute it and/or
   8 // modify it under the terms of the GNU General Public License as
   9 // published by the Free Software Foundation; either version 2 of the
  10 // License, or (at your option) any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 // General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License
  18 // along with this program; if not, write to the Free Software
  19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 //
  21 // $Id$
  22
  23
  24 #ifdef HAVE_CONFIG_H
  25 #  include <config.h>
  26 #endif
  27
  28 #ifdef HAVE_WINDOWS_H
  29 #  include <windows.h>
  30 #endif
  31
  32 #include <simgear/compiler.h>
  33
  34 #include <GL/glut.h>
  35 #include <simgear/xgl/xgl.h>
  36
  37 #if defined(FX) && defined(XMESA)
  38 #include <GL/xmesa.h>
  39 #endif
  40
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43
  44 #include STL_FSTREAM
  45
  46 #include <plib/pu.h>            // plib include
  47
  48 #include <simgear/constants.h>
  49 #include <simgear/debug/logstream.hxx>
  50 #include <simgear/misc/sg_path.hxx>
  51
  52 #include <Aircraft/aircraft.hxx>
  53 #include <Autopilot/auto_gui.hxx>
  54 #include <Autopilot/newauto.hxx>
  55 #include <Cockpit/hud.hxx>
  56 #include <Cockpit/panel.hxx>
  57 #include <Cockpit/panel_io.hxx>
  58 #include <GUI/gui.h>
  59 #include <Scenery/tilemgr.hxx>
  60 #include <Objects/matlib.hxx>
  61 #include <Time/light.hxx>
  62 #include <Time/tmp.hxx>
  63
  64 #ifndef FG_OLD_WEATHER
  65 #  include <WeatherCM/FGLocalWeatherDatabase.h>
  66 #else
  67 #  include <Weather/weather.hxx>
  68 #endif
  69
  70 #include "bfi.hxx"
  71 #include "globals.hxx"
  72 #include "keyboard.hxx"
  73 #include "fg_props.hxx"
  74 #include "options.hxx"
  75                                 // From main.cxx
  76 extern void fgReshape( int width, int height );
  77
  78
  79 // Handle keyboard events
  80 void GLUTkey(unsigned char k, int x, int y) {
  81     float fov, tmp;
  82     static bool winding_ccw = true;
  83     int speed;
  84
  85     FGInterface *f = current_aircraft.fdm_state;
  86     FGViewer *v = globals->get_current_view();
  87
  88     SG_LOG( SG_INPUT, SG_DEBUG, "Key hit = " << k );
  89     if ( puKeyboard(k, PU_DOWN) ) {
  90         return;
  91     }
  92
  93     if ( GLUT_ACTIVE_ALT && glutGetModifiers() ) {
  94         SG_LOG( SG_INPUT, SG_DEBUG, " SHIFTED" );
  95         switch (k) {
  96         case 1: // Ctrl-A key
  97             current_autopilot->set_AltitudeMode(
  98                   FGAutopilot::FG_ALTITUDE_LOCK );
  99             current_autopilot->set_AltitudeEnabled(
 100                   ! current_autopilot->get_AltitudeEnabled()
 101                 );
 102             return;
 103         case 7: // Ctrl-G key
 104             current_autopilot->set_AltitudeMode(
 105                   FGAutopilot::FG_ALTITUDE_GS1 );
 106             current_autopilot->set_AltitudeEnabled(
 107                   ! current_autopilot->get_AltitudeEnabled()
 108                 );
 109             return;
 110         case 8: // Ctrl-H key
 111             current_autopilot->set_HeadingMode(
 112                   FGAutopilot::FG_TC_HEADING_LOCK );
 113             current_autopilot->set_HeadingEnabled(
 114                   ! current_autopilot->get_HeadingEnabled()
 115                 );
 116             return;
 117         case 14: // Ctrl-N key
 118             current_autopilot->set_HeadingMode(
 119                   FGAutopilot::FG_HEADING_NAV1 );
 120             current_autopilot->set_HeadingEnabled(
 121                   ! current_autopilot->get_HeadingEnabled()
 122                 );
 123             return;
 124         case 18: // Ctrl-R key
 125             // temporary
 126             winding_ccw = !winding_ccw;
 127             if ( winding_ccw ) {
 128                 glFrontFace ( GL_CCW );
 129             } else {
 130                 glFrontFace ( GL_CW );
 131             }
 132             return;
 133         case 19: // Ctrl-S key
 134             current_autopilot->set_AutoThrottleEnabled(
 135                   ! current_autopilot->get_AutoThrottleEnabled()
 136                 );
 137             return;
 138         case 20: // Ctrl-T key
 139             current_autopilot->set_AltitudeMode(
 140                   FGAutopilot::FG_ALTITUDE_TERRAIN );
 141             current_autopilot->set_AltitudeEnabled(
 142                   ! current_autopilot->get_AltitudeEnabled()
 143                 );
 144             return;
 145         case 21: // Ctrl-U key
 146             // add 1000' of emergency altitude.  Possibly good for
 147             // unflipping yourself :-)
 148             {
 149                 double alt = cur_fdm_state->get_Altitude() + 1000;
 150                 fgFDMForceAltitude( fgGetString("/sim/flight-model"),
 151                                     alt * SG_FEET_TO_METER );
 152             }
 153             return;
 154         case 49: // numeric keypad 1
 155             v->set_goal_view_offset( SGD_PI * 0.75 );
 156             return;
 157         case 50: // numeric keypad 2
 158             v->set_goal_view_offset( SGD_PI );
 159             return;
 160         case 51: // numeric keypad 3
 161             v->set_goal_view_offset( SGD_PI * 1.25 );
 162             return;
 163         case 52: // numeric keypad 4
 164             v->set_goal_view_offset( SGD_PI * 0.50 );
 165             return;
 166         case 54: // numeric keypad 6
 167             v->set_goal_view_offset( SGD_PI * 1.50 );
 168             return;
 169         case 55: // numeric keypad 7
 170             v->set_goal_view_offset( SGD_PI * 0.25 );
 171             return;
 172         case 56: // numeric keypad 8
 173             v->set_goal_view_offset( 0.00 );
 174             return;
 175         case 57: // numeric keypad 9
 176             v->set_goal_view_offset( SGD_PI * 1.75 );
 177             return;
 178         case 65: // A key
 179             speed = fgGetInt("/sim/speed-up");
 180             speed--;
 181             if ( speed < 1 ) {
 182                 speed = 1;
 183             }
 184             fgSetInt("/sim/speed-up", speed);
 185             return;
 186         case 72: // H key
 187             HUD_brightkey( true );
 188             return;
 189         case 73: // I key
 190             // Minimal Hud
 191             fgHUDInit2(&current_aircraft);
 192             return;
 193         case 77: // M key
 194             globals->inc_warp( -60 );
 195             fgUpdateSkyAndLightingParams();
 196             return;
 197         case 80: // P key
 198             if (fgGetBool("/sim/panel/visibility"))
 199               fgSetBool("/sim/panel/visibility", false);
 200             else
 201               fgSetBool("/sim/panel/visibility", true);
 202             fgReshape(fgGetInt("/sim/startup/xsize"),
 203                       fgGetInt("/sim/startup/ysize"));
 204             break;
 205         case 84: // T key
 206             globals->inc_warp_delta( -30 );
 207             fgUpdateSkyAndLightingParams();
 208             return;
 209         case 87: // W key
 210 #if defined(FX) && !defined(WIN32)
 211             global_fullscreen = ( !global_fullscreen );
 212 #  if defined(XMESA_FX_FULLSCREEN) && defined(XMESA_FX_WINDOW)
 213             XMesaSetFXmode( global_fullscreen ?
 214                             XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW );
 215 #  endif
 216 #endif
 217             return;
 218         case 88: // X key
 219             fov = globals->get_current_view()->get_fov();
 220             fov *= 1.05;
 221             if ( fov > FG_FOV_MAX ) {
 222                 fov = FG_FOV_MAX;
 223             }
 224             globals->get_current_view()->set_fov(fov);
 225             // v->force_update_fov_math();
 226             return;
 227         case 90: // Z key
 228 #ifndef FG_OLD_WEATHER
 229             tmp = WeatherDatabase->getWeatherVisibility();
 230             tmp /= 1.10;
 231             WeatherDatabase->setWeatherVisibility( tmp );
 232 #else
 233             tmp = current_weather.get_visibility();   // in meters
 234             tmp /= 1.10;
 235             current_weather.set_visibility( tmp );
 236 #endif
 237             return;
 238         }
 239     } else {
 240         SG_LOG( SG_INPUT, SG_DEBUG, "" );
 241         switch (k) {
 242         case 50: // numeric keypad 2
 243             if ( current_autopilot->get_AltitudeEnabled() ) {
 244                 current_autopilot->AltitudeAdjust( 100 );
 245             } else {
 246                 controls.move_elevator(-0.05);
 247             }
 248             return;
 249         case 56: // numeric keypad 8
 250             if ( current_autopilot->get_AltitudeEnabled() ) {
 251                 current_autopilot->AltitudeAdjust( -100 );
 252             } else {
 253                 controls.move_elevator(0.05);
 254             }
 255             return;
 256         case 49: // numeric keypad 1
 257             controls.move_elevator_trim(-0.001);
 258             return;
 259         case 55: // numeric keypad 7
 260             controls.move_elevator_trim(0.001);
 261             return;
 262         case 52: // numeric keypad 4
 263             controls.move_aileron(-0.05);
 264             return;
 265         case 54: // numeric keypad 6
 266             controls.move_aileron(0.05);
 267             return;
 268         case 48: // numeric keypad Ins
 269             if ( current_autopilot->get_HeadingEnabled() ) {
 270                 current_autopilot->HeadingAdjust( -1 );
 271             } else {
 272                 controls.move_rudder(-0.05);
 273             }
 274             return;
 275         case 13: // numeric keypad Enter
 276             if ( current_autopilot->get_HeadingEnabled() ) {
 277                 current_autopilot->HeadingAdjust( 1 );
 278             } else {
 279                 controls.move_rudder(0.05);
 280             }
 281             return;
 282         case 53: // numeric keypad 5
 283             controls.set_aileron(0.0);
 284             controls.set_elevator(0.0);
 285             controls.set_rudder(0.0);
 286             return;
 287         case 57: // numeric keypad 9 (Pg Up)
 288             if ( current_autopilot->get_AutoThrottleEnabled() ) {
 289                 current_autopilot->AutoThrottleAdjust( 5 );
 290             } else {
 291                 controls.move_throttle( FGControls::ALL_ENGINES, 0.01 );
 292             }
 293             return;
 294         case 51: // numeric keypad 3 (Pg Dn)
 295             if ( current_autopilot->get_AutoThrottleEnabled() ) {
 296                 current_autopilot->AutoThrottleAdjust( -5 );
 297             } else {
 298                 controls.move_throttle( FGControls::ALL_ENGINES, -0.01 );
 299             }
 300             return;
 301         case 91: // [ key
 302             controls.move_flaps(-0.34);
 303             SG_LOG( SG_INPUT, SG_INFO,
 304                     "Set flaps to " << controls.get_flaps() );
 305             return;
 306         case 93: // ] key
 307             controls.move_flaps(0.34);
 308             SG_LOG( SG_INPUT, SG_INFO,
 309                     "Set flaps to " << controls.get_flaps() );
 310             return;
 311         case 97: // a key
 312             speed = fgGetInt("/sim/speed-up");
 313             speed++;
 314             fgSetInt("/sim/speed-up", speed);
 315             return;
 316         case 98: // b key
 317             int b_ret;
 318             double b_set;
 319             b_ret = int( controls.get_brake( 0 ) );
 320             b_set = double(!b_ret);
 321             controls.set_brake( FGControls::ALL_WHEELS, b_set);
 322             return;
 323         case 44: // , key
 324             if (controls.get_brake(0) > 0.0) {
 325                 controls.set_brake(0, 0.0);
 326             } else {
 327                 controls.set_brake(0, 1.0);
 328             }
 329             return;
 330         case 46: // . key
 331             if (controls.get_brake(1) > 0.0) {
 332                 controls.set_brake(1, 0.0);
 333             } else {
 334                 controls.set_brake(1, 1.0);
 335             }
 336             return;
 337         case 104: // h key
 338             HUD_masterswitch( true );
 339             return;
 340         case 105: // i key
 341             fgHUDInit(&current_aircraft);  // normal HUD
 342             return;
 343         case 109: // m key
 344             globals->inc_warp( 60 );
 345             fgUpdateSkyAndLightingParams();
 346             return;
 347         case 112: // p key
 348             globals->set_freeze( ! globals->get_freeze() );
 349
 350             {
 351                 SGBucket p( f->get_Longitude() * SGD_RADIANS_TO_DEGREES,
 352                             f->get_Latitude() * SGD_RADIANS_TO_DEGREES );
 353                 SGPath tile_path( globals->get_fg_root() );
 354                 tile_path.append( "Scenery" );
 355                 tile_path.append( p.gen_base_path() );
 356                 tile_path.append( p.gen_index_str() );
 357
 358                 // printf position and attitude information
 359                 SG_LOG( SG_INPUT, SG_INFO,
 360                         "Lon = " << f->get_Longitude() * SGD_RADIANS_TO_DEGREES
 361                         << "  Lat = " << f->get_Latitude() * SGD_RADIANS_TO_DEGREES
 362                         << "  Altitude = " << f->get_Altitude() * SG_FEET_TO_METER
 363                         );
 364                 SG_LOG( SG_INPUT, SG_INFO,
 365                         "Heading = " << f->get_Psi() * SGD_RADIANS_TO_DEGREES
 366                         << "  Roll = " << f->get_Phi() * SGD_RADIANS_TO_DEGREES
 367                         << "  Pitch = " << f->get_Theta() * SGD_RADIANS_TO_DEGREES );
 368                 SG_LOG( SG_INPUT, SG_INFO, tile_path.c_str());
 369             }
 370             return;
 371         case 116: // t key
 372             globals->inc_warp_delta( 30 );
 373             fgUpdateSkyAndLightingParams();
 374             return;
 375         case 118: // v key
 376             // handles GUI state as well as Viewer LookAt Direction
 377             CenterView();
 378             globals->set_current_view( globals->get_viewmgr()->next_view() );
 379             fgReshape( fgGetInt("/sim/startup/xsize"),
 380                        fgGetInt("/sim/startup/ysize") );
 381             return;
 382         case 120: // x key
 383             fov = globals->get_current_view()->get_fov();
 384             fov /= 1.05;
 385             if ( fov < FG_FOV_MIN ) {
 386                 fov = FG_FOV_MIN;
 387             }
 388             globals->get_current_view()->set_fov(fov);
 389             // v->force_update_fov_math();
 390             return;
 391         case 122: // z key
 392 #ifndef FG_OLD_WEATHER
 393             tmp = WeatherDatabase->getWeatherVisibility();
 394             tmp *= 1.10;
 395             WeatherDatabase->setWeatherVisibility( tmp );
 396 #else
 397             tmp = current_weather.get_visibility();   // in meters
 398             tmp *= 1.10;
 399             current_weather.set_visibility( tmp );
 400 #endif
 401             return;
 402         case 27: // ESC
 403             // if( fg_DebugOutput ) {
 404             //   fclose( fg_DebugOutput );
 405             // }
 406             SG_LOG( SG_INPUT, SG_ALERT,
 407                     "Program exit requested." );
 408             ConfirmExitDialog();
 409             return;
 410         }
 411     }
 412 }
 413
 414
 415 // Handle "special" keyboard events
 416 void GLUTspecialkey(int k, int x, int y) {
 417     FGViewer *v = globals->get_current_view();
 418
 419     SG_LOG( SG_INPUT, SG_DEBUG, "Special key hit = " << k );
 420
 421     if ( puKeyboard(k + PU_KEY_GLUT_SPECIAL_OFFSET, PU_DOWN) ) {
 422         return;
 423     }
 424
 425     if ( GLUT_ACTIVE_SHIFT && glutGetModifiers() ) {
 426         SG_LOG( SG_INPUT, SG_DEBUG, " SHIFTED" );
 427         switch (k) {
 428         case GLUT_KEY_F1: {
 429             ifstream input("fgfs.sav");
 430             if (input.good() && fgLoadFlight(input)) {
 431                 input.close();
 432                 SG_LOG(SG_INPUT, SG_INFO, "Restored flight from fgfs.sav");
 433             } else {
 434                 SG_LOG(SG_INPUT, SG_ALERT, "Cannot load flight from fgfs.sav");
 435             }
 436             return;
 437         }
 438         case GLUT_KEY_F2: {
 439             SG_LOG(SG_INPUT, SG_INFO, "Saving flight");
 440             cerr << "Opening output stream" << endl;
 441             ofstream output("fgfs.sav");
 442             cerr << "output stream opened" << endl;
 443             if (output.good() && fgSaveFlight(output)) {
 444                 output.close();
 445                 SG_LOG(SG_INPUT, SG_INFO, "Saved flight to fgfs.sav");
 446             } else {
 447                 SG_LOG(SG_INPUT, SG_ALERT, "Cannot save flight to fgfs.sav");
 448             }
 449             return;
 450         }
 451         case GLUT_KEY_F3: {
 452             string panel_path =
 453                 fgGetString("/sim/panel/path", "Panels/Default/default.xml");
 454             FGPanel * new_panel = fgReadPanel(panel_path);
 455             if (new_panel == 0) {
 456                 SG_LOG(SG_INPUT, SG_ALERT,
 457                        "Error reading new panel from " << panel_path);
 458                 return;
 459             }
 460             SG_LOG(SG_INPUT, SG_INFO, "Loaded new panel from " << panel_path);
 461             current_panel->unbind();
 462             delete current_panel;
 463             current_panel = new_panel;
 464             return;
 465         }
 466         case GLUT_KEY_F4: {
 467             SGPath props_path(globals->get_fg_root());
 468             props_path.append("preferences.xml");
 469             SG_LOG(SG_INPUT, SG_INFO, "Rereading global preferences");
 470             if (!readProperties(props_path.str(), globals->get_props())) {
 471                 SG_LOG(SG_INPUT, SG_ALERT,
 472                        "Failed to reread global preferences from "
 473                        << props_path.str());
 474             } else {
 475                 SG_LOG(SG_INPUT, SG_INFO, "Finished Reading global preferences");
 476             }
 477             return;
 478         }
 479         case GLUT_KEY_F5: {
 480             current_panel->setYOffset(current_panel->getYOffset() - 5);
 481             fgReshape(fgGetInt("/sim/startup/xsize"),
 482                       fgGetInt("/sim/startup/ysize"));
 483             return;
 484         }
 485         case GLUT_KEY_F6: {
 486             current_panel->setYOffset(current_panel->getYOffset() + 5);
 487             fgReshape(fgGetInt("/sim/startup/xsize"),
 488                       fgGetInt("/sim/startup/ysize"));
 489             return;
 490         }
 491         case GLUT_KEY_F7: {
 492             current_panel->setXOffset(current_panel->getXOffset() - 5);
 493             return;
 494         }
 495         case GLUT_KEY_F8: {
 496             current_panel->setXOffset(current_panel->getXOffset() + 5);
 497             return;
 498         }
 499         // case GLUT_KEY_F9: {
 500         //     return;
 501         // }
 502         case GLUT_KEY_F10: {
 503             fgToggleFDMdataLogging();
 504             return;
 505         }
 506         // case GLUT_KEY_F11: {
 507         //     return;
 508         // }
 509         // case GLUT_KEY_F12: {
 510         //     return;
 511         // }
 512         case GLUT_KEY_END: // numeric keypad 1
 513             v->set_goal_view_offset( SGD_PI * 0.75 );
 514             return;
 515         case GLUT_KEY_DOWN: // numeric keypad 2
 516             v->set_goal_view_offset( SGD_PI );
 517             return;
 518         case GLUT_KEY_PAGE_DOWN: // numeric keypad 3
 519             v->set_goal_view_offset( SGD_PI * 1.25 );
 520             return;
 521         case GLUT_KEY_LEFT: // numeric keypad 4
 522             v->set_goal_view_offset( SGD_PI * 0.50 );
 523             return;
 524         case GLUT_KEY_RIGHT: // numeric keypad 6
 525             v->set_goal_view_offset( SGD_PI * 1.50 );
 526             return;
 527         case GLUT_KEY_HOME: // numeric keypad 7
 528             v->set_goal_view_offset( SGD_PI * 0.25 );
 529             return;
 530         case GLUT_KEY_UP: // numeric keypad 8
 531             v->set_goal_view_offset( 0.00 );
 532             return;
 533         case GLUT_KEY_PAGE_UP: // numeric keypad 9
 534             v->set_goal_view_offset( SGD_PI * 1.75 );
 535             return;
 536         }
 537     } else {
 538         SG_LOG( SG_INPUT, SG_DEBUG, "" );
 539         switch (k) {
 540         case GLUT_KEY_F2: // F2 Reload Tile Cache...
 541             {
 542                 bool freeze = globals->get_freeze();
 543                 SG_LOG(SG_INPUT, SG_INFO, "ReIniting TileCache");
 544                 if ( !freeze )
 545                     globals->set_freeze( true );
 546                 BusyCursor(0);
 547                 if ( global_tile_mgr.init() ) {
 548                     // Load the local scenery data
 549                     global_tile_mgr.update(
 550                         cur_fdm_state->get_Longitude() * SGD_RADIANS_TO_DEGREES,
 551                         cur_fdm_state->get_Latitude() * SGD_RADIANS_TO_DEGREES );
 552                 } else {
 553                     SG_LOG( SG_GENERAL, SG_ALERT,
 554                             "Error in Tile Manager initialization!" );
 555                     exit(-1);
 556                 }
 557                 BusyCursor(1);
 558                 if ( !freeze )
 559                    globals->set_freeze( false );
 560                 return;
 561             }
 562         case GLUT_KEY_F3: // F3 Take a screen shot
 563             fgDumpSnapShot();
 564             return;
 565         case GLUT_KEY_F4: // F4 Update lighting manually
 566             fgUpdateSkyAndLightingParams();
 567         case GLUT_KEY_F6: // F6 toggles Autopilot target location
 568             if ( current_autopilot->get_HeadingMode() !=
 569                  FGAutopilot::FG_HEADING_WAYPOINT ) {
 570                 current_autopilot->set_HeadingMode(
 571                     FGAutopilot::FG_HEADING_WAYPOINT );
 572                 current_autopilot->set_HeadingEnabled( true );
 573             } else {
 574                 current_autopilot->set_HeadingMode(
 575                     FGAutopilot::FG_TC_HEADING_LOCK );
 576             }
 577             return;
 578         case GLUT_KEY_F8: {// F8 toggles fog ... off fastest nicest...
 579             const string &fog = fgGetString("/sim/rendering/fog");
 580             if (fog == "disabled") {
 581               fgSetString("/sim/rendering/fog", "fastest");
 582               SG_LOG(SG_INPUT, SG_INFO, "Fog enabled, hint=fastest");
 583             } else if (fog == "fastest") {
 584               fgSetString("/sim/rendering/fog", "nicest");
 585               SG_LOG(SG_INPUT, SG_INFO, "Fog enabled, hint=nicest");
 586             } else if (fog == "nicest") {
 587               fgSetString("/sim/rendering/fog", "disabled");
 588               SG_LOG(SG_INPUT, SG_INFO, "Fog disabled");
 589             } else {
 590               fgSetString("/sim/rendering/fog", "disabled");
 591               SG_LOG(SG_INPUT, SG_ALERT, "Unrecognized fog type "
 592                      << fog << ", changed to 'disabled'");
 593             }
 594             return;
 595         }
 596         case GLUT_KEY_F9: // F9 toggles textures on and off...
 597             SG_LOG( SG_INPUT, SG_INFO, "Toggling texture" );
 598             if ( fgGetBool("/sim/rendering/textures")) {
 599                 fgSetBool("/sim/rendering/textures", false);
 600                 material_lib.set_step( 1 );
 601             } else {
 602                 fgSetBool("/sim/rendering/textures", true);
 603                 material_lib.set_step( 0 );
 604             }
 605             return;
 606         case GLUT_KEY_F10: // F10 toggles menu on and off...
 607             SG_LOG(SG_INPUT, SG_INFO, "Invoking call back function");
 608             guiToggleMenu();
 609             return;
 610         case GLUT_KEY_F11: // F11 Altitude Dialog.
 611             SG_LOG(SG_INPUT, SG_INFO, "Invoking Altitude call back function");
 612             NewAltitude( NULL );
 613             return;
 614         case GLUT_KEY_F12: // F12 Heading Dialog...
 615             SG_LOG(SG_INPUT, SG_INFO, "Invoking Heading call back function");
 616             NewHeading( NULL );
 617             return;
 618         case GLUT_KEY_UP:
 619             if ( current_autopilot->get_AltitudeEnabled() ) {
 620                 current_autopilot->AltitudeAdjust( -100 );
 621             } else {
 622                 controls.move_elevator(0.05);
 623             }
 624             return;
 625         case GLUT_KEY_DOWN:
 626             if ( current_autopilot->get_AltitudeEnabled() ) {
 627                 current_autopilot->AltitudeAdjust( 100 );
 628             } else {
 629                 controls.move_elevator(-0.05);
 630             }
 631             return;
 632         case GLUT_KEY_LEFT:
 633             controls.move_aileron(-0.05);
 634             return;
 635         case GLUT_KEY_RIGHT:
 636             controls.move_aileron(0.05);
 637             return;
 638         case GLUT_KEY_HOME: // numeric keypad 1
 639             controls.move_elevator_trim(0.001);
 640             return;
 641         case GLUT_KEY_END: // numeric keypad 7
 642             controls.move_elevator_trim(-0.001);
 643             return;
 644         case GLUT_KEY_INSERT: // numeric keypad Ins
 645             if ( current_autopilot->get_HeadingEnabled() ) {
 646                 current_autopilot->HeadingAdjust( -1 );
 647             } else {
 648                 controls.move_rudder(-0.05);
 649             }
 650             return;
 651         case 13: // numeric keypad Enter
 652             if ( current_autopilot->get_HeadingEnabled() ) {
 653                 current_autopilot->HeadingAdjust( 1 );
 654             } else {
 655                 controls.move_rudder(0.05);
 656             }
 657             return;
 658         case 53: // numeric keypad 5
 659             controls.set_aileron(0.0);
 660             controls.set_elevator(0.0);
 661             controls.set_rudder(0.0);
 662             return;
 663         case GLUT_KEY_PAGE_UP: // numeric keypad 9 (Pg Up)
 664             if ( current_autopilot->get_AutoThrottleEnabled() ) {
 665                 current_autopilot->AutoThrottleAdjust( 5 );
 666             } else {
 667                 controls.move_throttle( FGControls::ALL_ENGINES, 0.01 );
 668             }
 669             return;
 670         case GLUT_KEY_PAGE_DOWN: // numeric keypad 3 (Pg Dn)
 671             if ( current_autopilot->get_AutoThrottleEnabled() ) {
 672                 current_autopilot->AutoThrottleAdjust( -5 );
 673             } else {
 674                 controls.move_throttle( FGControls::ALL_ENGINES, -0.01 );
 675             }
 676             return;
 677         }
 678     }
 679 }
 680
 681