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/fgpath.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 "options.hxx"
  74 #include "save.hxx"
  75
  76                                 // From main.cxx
  77 extern void fgReshape( int width, int height );
  78
  79
  80 // Handle keyboard events
  81 void GLUTkey(unsigned char k, int x, int y) {
  82     FGInterface *f;
  83     SGTime *t;
  84     FGViewer *v;
  85     float fov, tmp;
  86     static bool winding_ccw = true;
  87     int speed;
  88
  89     f = current_aircraft.fdm_state;
  90     v = globals->get_current_view();
  91
  92     FG_LOG( FG_INPUT, FG_DEBUG, "Key hit = " << k );
  93     if ( puKeyboard(k, PU_DOWN) ) {
  94         return;
  95     }
  96
  97     if ( GLUT_ACTIVE_ALT && glutGetModifiers() ) {
  98         FG_LOG( FG_INPUT, FG_DEBUG, " SHIFTED" );
  99         switch (k) {
 100         case 1: // Ctrl-A key
 101             current_autopilot->set_AltitudeMode(
 102                   FGAutopilot::FG_ALTITUDE_LOCK );
 103             current_autopilot->set_AltitudeEnabled(
 104                   ! current_autopilot->get_AltitudeEnabled()
 105                 );
 106             return;
 107         case 7: // Ctrl-G key
 108             current_autopilot->set_AltitudeMode(
 109                   FGAutopilot::FG_ALTITUDE_GS1 );
 110             current_autopilot->set_AltitudeEnabled(
 111                   ! current_autopilot->get_AltitudeEnabled()
 112                 );
 113             return;
 114         case 8: // Ctrl-H key
 115             current_autopilot->set_HeadingMode(
 116                   FGAutopilot::FG_HEADING_LOCK );
 117             current_autopilot->set_HeadingEnabled(
 118                   ! current_autopilot->get_HeadingEnabled()
 119                 );
 120             return;
 121         case 14: // Ctrl-N key
 122             current_autopilot->set_HeadingMode(
 123                   FGAutopilot::FG_HEADING_NAV1 );
 124             current_autopilot->set_HeadingEnabled(
 125                   ! current_autopilot->get_HeadingEnabled()
 126                 );
 127             return;
 128         case 18: // Ctrl-R key
 129             // temporary
 130             winding_ccw = !winding_ccw;
 131             if ( winding_ccw ) {
 132                 glFrontFace ( GL_CCW );
 133             } else {
 134                 glFrontFace ( GL_CW );
 135             }
 136             return;
 137         case 19: // Ctrl-S key
 138             current_autopilot->set_AutoThrottleEnabled(
 139                   ! current_autopilot->get_AutoThrottleEnabled()
 140                 );
 141             return;
 142         case 20: // Ctrl-T key
 143             current_autopilot->set_AltitudeMode(
 144                   FGAutopilot::FG_ALTITUDE_TERRAIN );
 145             current_autopilot->set_AltitudeEnabled(
 146                   ! current_autopilot->get_AltitudeEnabled()
 147                 );
 148             return;
 149         case 21: // Ctrl-U key
 150             // add 1000' of emergency altitude.  Possibly good for
 151             // unflipping yourself :-)
 152             {
 153                 double alt = cur_fdm_state->get_Altitude() + 1000;
 154                 fgFDMForceAltitude( current_options.get_flight_model(),
 155                                     alt * FEET_TO_METER );
 156             }
 157             return;
 158         case 49: // numeric keypad 1
 159             v->set_goal_view_offset( FG_PI * 0.75 );
 160             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 161               globals->get_pilot_view()->set_pilot_offset(-25.0, 25.0, 1.0);
 162               v->set_view_offset( FG_PI * 0.75 );
 163             }
 164             return;
 165         case 50: // numeric keypad 2
 166             v->set_goal_view_offset( FG_PI );
 167             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 168               globals->get_pilot_view()->set_pilot_offset(-25.0, 0.0, 1.0);
 169               v->set_view_offset( FG_PI );
 170             }
 171             return;
 172         case 51: // numeric keypad 3
 173             v->set_goal_view_offset( FG_PI * 1.25 );
 174             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 175               globals->get_pilot_view()->set_pilot_offset(-25.0, -25.0, 1.0);
 176               v->set_view_offset( FG_PI * 1.25 );
 177             }
 178             return;
 179         case 52: // numeric keypad 4
 180             v->set_goal_view_offset( FG_PI * 0.50 );
 181             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 182               globals->get_pilot_view()->set_pilot_offset(0.0, 25.0, 1.0);
 183               v->set_view_offset( FG_PI * 0.50 );
 184             }
 185             return;
 186         case 54: // numeric keypad 6
 187             v->set_goal_view_offset( FG_PI * 1.50 );
 188             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 189               globals->get_pilot_view()->set_pilot_offset(0.0, -25.0, 1.0);
 190               v->set_view_offset( FG_PI * 1.50 );
 191             }
 192             return;
 193         case 55: // numeric keypad 7
 194             v->set_goal_view_offset( FG_PI * 0.25 );
 195             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 196               globals->get_pilot_view()->set_pilot_offset(25.0, 25.0, 1.0);
 197               v->set_view_offset( FG_PI * 0.25 );
 198             }
 199             return;
 200         case 56: // numeric keypad 8
 201             v->set_goal_view_offset( 0.00 );
 202             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 203               globals->get_pilot_view()->set_pilot_offset(25.0, 0.0, 1.0);
 204               v->set_view_offset( 0.00 );
 205             }
 206             return;
 207         case 57: // numeric keypad 9
 208             v->set_goal_view_offset( FG_PI * 1.75 );
 209             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 210               globals->get_pilot_view()->set_pilot_offset(25.0, -25.0, 1.0);
 211               v->set_view_offset( FG_PI * 1.75 );
 212             }
 213             return;
 214         case 65: // A key
 215             speed = current_options.get_speed_up();
 216             speed--;
 217             if ( speed < 1 ) {
 218                 speed = 1;
 219             }
 220             current_options.set_speed_up( speed );
 221             return;
 222         case 72: // H key
 223             // status = current_options.get_hud_status();
 224             // current_options.set_hud_status(!status);
 225             HUD_brightkey( true );
 226             return;
 227         case 73: // I key
 228             // Minimal Hud
 229             fgHUDInit2(&current_aircraft);
 230             return;
 231         case 77: // M key
 232             globals->inc_warp( -60 );
 233             fgUpdateSkyAndLightingParams();
 234             return;
 235         case 80: // P key
 236             current_options.toggle_panel();
 237             break;
 238         case 84: // T key
 239             globals->inc_warp_delta( -30 );
 240             fgUpdateSkyAndLightingParams();
 241             return;
 242         case 87: // W key
 243 #if defined(FX) && !defined(WIN32)
 244             global_fullscreen = ( !global_fullscreen );
 245 #  if defined(XMESA_FX_FULLSCREEN) && defined(XMESA_FX_WINDOW)
 246             XMesaSetFXmode( global_fullscreen ?
 247                             XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW );
 248 #  endif
 249 #endif
 250             return;
 251         case 88: // X key
 252             fov = current_options.get_fov();
 253             fov *= 1.05;
 254             if ( fov > FG_FOV_MAX ) {
 255                 fov = FG_FOV_MAX;
 256             }
 257             current_options.set_fov(fov);
 258             v->force_update_fov_math();
 259             return;
 260         case 90: // Z key
 261 #ifndef FG_OLD_WEATHER
 262             tmp = WeatherDatabase->getWeatherVisibility();
 263             tmp /= 1.10;
 264             WeatherDatabase->setWeatherVisibility( tmp );
 265 #else
 266             tmp = current_weather.get_visibility();   // in meters
 267             tmp /= 1.10;
 268             current_weather.set_visibility( tmp );
 269 #endif
 270             return;
 271         }
 272     } else {
 273         FG_LOG( FG_INPUT, FG_DEBUG, "" );
 274         switch (k) {
 275         case 50: // numeric keypad 2
 276             if ( current_autopilot->get_AltitudeEnabled() ) {
 277                 current_autopilot->AltitudeAdjust( 100 );
 278             } else {
 279                 controls.move_elevator(-0.05);
 280             }
 281             return;
 282         case 56: // numeric keypad 8
 283             if ( current_autopilot->get_AltitudeEnabled() ) {
 284                 current_autopilot->AltitudeAdjust( -100 );
 285             } else {
 286                 controls.move_elevator(0.05);
 287             }
 288             return;
 289         case 49: // numeric keypad 1
 290             controls.move_elevator_trim(-0.001);
 291             return;
 292         case 55: // numeric keypad 7
 293             controls.move_elevator_trim(0.001);
 294             return;
 295         case 52: // numeric keypad 4
 296             controls.move_aileron(-0.05);
 297             return;
 298         case 54: // numeric keypad 6
 299             controls.move_aileron(0.05);
 300             return;
 301         case 48: // numeric keypad Ins
 302             if ( current_autopilot->get_HeadingEnabled() ) {
 303                 current_autopilot->HeadingAdjust( -1 );
 304             } else {
 305                 controls.move_rudder(-0.05);
 306             }
 307             return;
 308         case 13: // numeric keypad Enter
 309             if ( current_autopilot->get_HeadingEnabled() ) {
 310                 current_autopilot->HeadingAdjust( 1 );
 311             } else {
 312                 controls.move_rudder(0.05);
 313             }
 314             return;
 315         case 53: // numeric keypad 5
 316             controls.set_aileron(0.0);
 317             controls.set_elevator(0.0);
 318             controls.set_rudder(0.0);
 319             return;
 320         case 57: // numeric keypad 9 (Pg Up)
 321             if ( current_autopilot->get_AutoThrottleEnabled() ) {
 322                 current_autopilot->AutoThrottleAdjust( 5 );
 323             } else {
 324                 controls.move_throttle( FGControls::ALL_ENGINES, 0.01 );
 325             }
 326             return;
 327         case 51: // numeric keypad 3 (Pg Dn)
 328             if ( current_autopilot->get_AutoThrottleEnabled() ) {
 329                 current_autopilot->AutoThrottleAdjust( -5 );
 330             } else {
 331                 controls.move_throttle( FGControls::ALL_ENGINES, -0.01 );
 332             }
 333             return;
 334         case 91: // [ key
 335             controls.move_flaps(-0.34);
 336             FG_LOG( FG_INPUT, FG_INFO,
 337                     "Set flaps to " << controls.get_flaps() );
 338             return;
 339         case 93: // ] key
 340             controls.move_flaps(0.34);
 341             FG_LOG( FG_INPUT, FG_INFO,
 342                     "Set flaps to " << controls.get_flaps() );
 343             return;
 344         case 97: // a key
 345             speed = current_options.get_speed_up();
 346             speed++;
 347             current_options.set_speed_up( speed );
 348             return;
 349         case 98: // b key
 350             int b_ret;
 351             double b_set;
 352             b_ret = int( controls.get_brake( 0 ) );
 353             b_set = double(!b_ret);
 354             controls.set_brake( FGControls::ALL_WHEELS, b_set);
 355             return;
 356         case 44: // , key
 357             if (controls.get_brake(0) > 0.0) {
 358                 controls.set_brake(0, 0.0);
 359             } else {
 360                 controls.set_brake(0, 1.0);
 361             }
 362             return;
 363         case 46: // . key
 364             if (controls.get_brake(1) > 0.0) {
 365                 controls.set_brake(1, 0.0);
 366             } else {
 367                 controls.set_brake(1, 1.0);
 368             }
 369             return;
 370         case 104: // h key
 371             HUD_masterswitch( true );
 372             return;
 373         case 105: // i key
 374             fgHUDInit(&current_aircraft);  // normal HUD
 375             return;
 376         case 109: // m key
 377             globals->inc_warp( 60 );
 378             fgUpdateSkyAndLightingParams();
 379             return;
 380         case 112: // p key
 381             globals->set_freeze( ! globals->get_freeze() );
 382
 383             {
 384                 FGBucket p( f->get_Longitude() * RAD_TO_DEG,
 385                             f->get_Latitude() * RAD_TO_DEG );
 386                 FGPath tile_path( current_options.get_fg_root() );
 387                 tile_path.append( "Scenery" );
 388                 tile_path.append( p.gen_base_path() );
 389                 tile_path.append( p.gen_index_str() );
 390
 391                 // printf position and attitude information
 392                 FG_LOG( FG_INPUT, FG_INFO,
 393                         "Lon = " << f->get_Longitude() * RAD_TO_DEG
 394                         << "  Lat = " << f->get_Latitude() * RAD_TO_DEG
 395                         << "  Altitude = " << f->get_Altitude() * FEET_TO_METER
 396                         );
 397                 FG_LOG( FG_INPUT, FG_INFO,
 398                         "Heading = " << f->get_Psi() * RAD_TO_DEG
 399                         << "  Roll = " << f->get_Phi() * RAD_TO_DEG
 400                         << "  Pitch = " << f->get_Theta() * RAD_TO_DEG );
 401                 FG_LOG( FG_INPUT, FG_INFO, tile_path.c_str());
 402             }
 403             return;
 404         case 116: // t key
 405             globals->inc_warp_delta( 30 );
 406             fgUpdateSkyAndLightingParams();
 407             return;
 408         case 118: // v key
 409 //          current_options.cycle_view_mode();
 410             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 411               current_options.set_view_mode(fgOPTIONS::FG_VIEW_PILOT);
 412               v->set_goal_view_offset( 0.0 );
 413               v->set_view_offset( 0.0 );
 414             } else if (current_options.get_view_mode() ==
 415                        fgOPTIONS::FG_VIEW_PILOT) {
 416               current_options.set_view_mode(fgOPTIONS::FG_VIEW_FOLLOW);
 417               v->set_goal_view_offset( FG_PI * 1.75 );
 418               v->set_view_offset( FG_PI * 1.75 );
 419               globals->get_pilot_view()->set_pilot_offset(25.0, -25.0, 1.0);
 420             }
 421             fgReshape( globals->get_current_view()->get_winWidth(),
 422                        globals->get_current_view()->get_winHeight() );
 423             return;
 424         case 120: // x key
 425             fov = current_options.get_fov();
 426             fov /= 1.05;
 427             if ( fov < FG_FOV_MIN ) {
 428                 fov = FG_FOV_MIN;
 429             }
 430             current_options.set_fov(fov);
 431             v->force_update_fov_math();
 432             return;
 433         case 122: // z key
 434 #ifndef FG_OLD_WEATHER
 435             tmp = WeatherDatabase->getWeatherVisibility();
 436             tmp *= 1.10;
 437             WeatherDatabase->setWeatherVisibility( tmp );
 438 #else
 439             tmp = current_weather.get_visibility();   // in meters
 440             tmp *= 1.10;
 441             current_weather.set_visibility( tmp );
 442 #endif
 443             return;
 444         case 27: // ESC
 445             // if( fg_DebugOutput ) {
 446             //   fclose( fg_DebugOutput );
 447             // }
 448             FG_LOG( FG_INPUT, FG_ALERT,
 449                     "Program exit requested." );
 450             ConfirmExitDialog();
 451             return;
 452         }
 453     }
 454 }
 455
 456
 457 // Handle "special" keyboard events
 458 void GLUTspecialkey(int k, int x, int y) {
 459     FGViewer *v;
 460
 461     v = globals->get_current_view();
 462
 463     FG_LOG( FG_INPUT, FG_DEBUG, "Special key hit = " << k );
 464
 465     if ( puKeyboard(k + PU_KEY_GLUT_SPECIAL_OFFSET, PU_DOWN) ) {
 466         return;
 467     }
 468
 469     if ( GLUT_ACTIVE_SHIFT && glutGetModifiers() ) {
 470         FG_LOG( FG_INPUT, FG_DEBUG, " SHIFTED" );
 471         switch (k) {
 472         case GLUT_KEY_F1: {
 473             ifstream input("fgfs.sav");
 474             if (input.good() && fgLoadFlight(input)) {
 475                 input.close();
 476                 FG_LOG(FG_INPUT, FG_INFO, "Restored flight from fgfs.sav");
 477             } else {
 478                 FG_LOG(FG_INPUT, FG_ALERT, "Cannot load flight from fgfs.sav");
 479             }
 480             return;
 481         }
 482         case GLUT_KEY_F2: {
 483             FG_LOG(FG_INPUT, FG_INFO, "Saving flight");
 484             ofstream output("fgfs.sav");
 485             if (output.good() && fgSaveFlight(output)) {
 486                 output.close();
 487                 FG_LOG(FG_INPUT, FG_INFO, "Saved flight to fgfs.sav");
 488             } else {
 489                 FG_LOG(FG_INPUT, FG_ALERT, "Cannot save flight to fgfs.sav");
 490             }
 491             return;
 492         }
 493         case GLUT_KEY_F3: {
 494           string panel_path =
 495             current_properties.getStringValue("/sim/panel/path",
 496                                               "Panels/Default/default.xml");
 497           FGPanel * new_panel = fgReadPanel(panel_path);
 498           if (new_panel == 0) {
 499             FG_LOG(FG_INPUT, FG_ALERT,
 500                    "Error reading new panel from " << panel_path);
 501             return;
 502           }
 503           FG_LOG(FG_INPUT, FG_INFO, "Loaded new panel from " << panel_path);
 504           delete current_panel;
 505           current_panel = new_panel;
 506           return;
 507         }
 508         case GLUT_KEY_F4: {
 509           FGPath props_path(current_options.get_fg_root());
 510           props_path.append("preferences.xml");
 511           FG_LOG(FG_INPUT, FG_INFO, "Rereading global preferences");
 512           if (!readPropertyList(props_path.str(), &current_properties)) {
 513             FG_LOG(FG_INPUT, FG_ALERT,
 514                    "Failed to reread global preferences from "
 515                    << props_path.str());
 516           } else {
 517             FG_LOG(FG_INPUT, FG_INFO, "Finished Reading global preferences");
 518           }
 519           return;
 520         }
 521         case GLUT_KEY_F5: {
 522           current_panel->setYOffset(current_panel->getYOffset() - 5);
 523           fgReshape(globals->get_current_view()->get_winWidth(),
 524                     globals->get_current_view()->get_winHeight());
 525           return;
 526         }
 527         case GLUT_KEY_F6: {
 528           current_panel->setYOffset(current_panel->getYOffset() + 5);
 529           fgReshape(globals->get_current_view()->get_winWidth(),
 530                     globals->get_current_view()->get_winHeight());
 531           return;
 532         }
 533         case GLUT_KEY_F7: {
 534           current_panel->setXOffset(current_panel->getXOffset() - 5);
 535           return;
 536         }
 537         case GLUT_KEY_F8: {
 538           current_panel->setXOffset(current_panel->getXOffset() + 5);
 539           return;
 540         }
 541         case GLUT_KEY_END: // numeric keypad 1
 542             v->set_goal_view_offset( FG_PI * 0.75 );
 543             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 544               globals->get_pilot_view()->set_pilot_offset(-25.0, 25.0, 1.0);
 545               v->set_view_offset( FG_PI * 0.75 );
 546             }
 547             return;
 548         case GLUT_KEY_DOWN: // numeric keypad 2
 549             v->set_goal_view_offset( FG_PI );
 550             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 551               globals->get_pilot_view()->set_pilot_offset(-25.0, 0.0, 1.0);
 552               v->set_view_offset( FG_PI );
 553             }
 554             return;
 555         case GLUT_KEY_PAGE_DOWN: // numeric keypad 3
 556             v->set_goal_view_offset( FG_PI * 1.25 );
 557             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 558               globals->get_pilot_view()->set_pilot_offset(-25.0, -25.0, 1.0);
 559               v->set_view_offset( FG_PI * 1.25 );
 560             }
 561             return;
 562         case GLUT_KEY_LEFT: // numeric keypad 4
 563             v->set_goal_view_offset( FG_PI * 0.50 );
 564             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 565               globals->get_pilot_view()->set_pilot_offset(0.0, 25.0, 1.0);
 566               v->set_view_offset( FG_PI * 0.50 );
 567             }
 568             return;
 569         case GLUT_KEY_RIGHT: // numeric keypad 6
 570             v->set_goal_view_offset( FG_PI * 1.50 );
 571             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 572               globals->get_pilot_view()->set_pilot_offset(0.0, -25.0, 1.0);
 573               v->set_view_offset( FG_PI * 1.50 );
 574             }
 575             return;
 576         case GLUT_KEY_HOME: // numeric keypad 7
 577             v->set_goal_view_offset( FG_PI * 0.25 );
 578             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 579               globals->get_pilot_view()->set_pilot_offset(25.0, 25.0, 1.0);
 580               v->set_view_offset( FG_PI * 0.25 );
 581             }
 582             return;
 583         case GLUT_KEY_UP: // numeric keypad 8
 584             v->set_goal_view_offset( 0.00 );
 585             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 586               globals->get_pilot_view()->set_pilot_offset(25.0, 0.0, 1.0);
 587               v->set_view_offset( 0.00 );
 588             }
 589             return;
 590         case GLUT_KEY_PAGE_UP: // numeric keypad 9
 591             v->set_goal_view_offset( FG_PI * 1.75 );
 592             if (current_options.get_view_mode() == fgOPTIONS::FG_VIEW_FOLLOW) {
 593               globals->get_pilot_view()->set_pilot_offset(25.0, -25.0, 1.0);
 594               v->set_view_offset( FG_PI * 1.75 );
 595             }
 596             return;
 597         }
 598     } else {
 599         FG_LOG( FG_INPUT, FG_DEBUG, "" );
 600         switch (k) {
 601         case GLUT_KEY_F2: // F2 Reload Tile Cache...
 602             {
 603                 bool freeze;
 604                 FG_LOG(FG_INPUT, FG_INFO, "ReIniting TileCache");
 605                 if ( !freeze )
 606                     globals->set_freeze( true );
 607                 BusyCursor(0);
 608                 if ( global_tile_mgr.init() ) {
 609                     // Load the local scenery data
 610                     global_tile_mgr.update(
 611                         cur_fdm_state->get_Longitude() * RAD_TO_DEG,
 612                         cur_fdm_state->get_Latitude() * RAD_TO_DEG );
 613                 } else {
 614                     FG_LOG( FG_GENERAL, FG_ALERT,
 615                             "Error in Tile Manager initialization!" );
 616                     exit(-1);
 617                 }
 618                 BusyCursor(1);
 619                 if ( !freeze )
 620                    globals->set_freeze( false );
 621                 return;
 622             }
 623         case GLUT_KEY_F3: // F3 Take a screen shot
 624             fgDumpSnapShot();
 625             return;
 626         case GLUT_KEY_F6: // F6 toggles Autopilot target location
 627             if ( current_autopilot->get_HeadingMode() !=
 628                  FGAutopilot::FG_HEADING_WAYPOINT ) {
 629                 current_autopilot->set_HeadingMode(
 630                     FGAutopilot::FG_HEADING_WAYPOINT );
 631                 current_autopilot->set_HeadingEnabled( true );
 632             } else {
 633                 current_autopilot->set_HeadingMode(
 634                     FGAutopilot::FG_HEADING_LOCK );
 635             }
 636             return;
 637         case GLUT_KEY_F8: // F8 toggles fog ... off fastest nicest...
 638             current_options.cycle_fog();
 639
 640             if ( current_options.get_fog() == fgOPTIONS::FG_FOG_DISABLED ) {
 641                 FG_LOG( FG_INPUT, FG_INFO, "Fog disabled" );
 642             } else if ( current_options.get_fog() ==
 643                         fgOPTIONS::FG_FOG_FASTEST )
 644             {
 645                 FG_LOG( FG_INPUT, FG_INFO,
 646                         "Fog enabled, hint set to fastest" );
 647             } else if ( current_options.get_fog() ==
 648                         fgOPTIONS::FG_FOG_NICEST )
 649             {
 650                 FG_LOG( FG_INPUT, FG_INFO,
 651                         "Fog enabled, hint set to nicest" );
 652             }
 653
 654             return;
 655         case GLUT_KEY_F9: // F9 toggles textures on and off...
 656             FG_LOG( FG_INPUT, FG_INFO, "Toggling texture" );
 657             if ( current_options.get_textures() ) {
 658                 current_options.set_textures( false );
 659                 material_lib.set_step( 1 );
 660             } else {
 661                 current_options.set_textures( true );
 662                 material_lib.set_step( 0 );
 663             }
 664             return;
 665         case GLUT_KEY_F10: // F10 toggles menu on and off...
 666             FG_LOG(FG_INPUT, FG_INFO, "Invoking call back function");
 667             guiToggleMenu();
 668             return;
 669         case GLUT_KEY_F11: // F11 Altitude Dialog.
 670             FG_LOG(FG_INPUT, FG_INFO, "Invoking Altitude call back function");
 671             NewAltitude( NULL );
 672             return;
 673         case GLUT_KEY_F12: // F12 Heading Dialog...
 674             FG_LOG(FG_INPUT, FG_INFO, "Invoking Heading call back function");
 675             NewHeading( NULL );
 676             return;
 677         case GLUT_KEY_UP:
 678             if ( current_autopilot->get_AltitudeEnabled() ) {
 679                 current_autopilot->AltitudeAdjust( -100 );
 680             } else {
 681                 controls.move_elevator(0.05);
 682             }
 683             return;
 684         case GLUT_KEY_DOWN:
 685             if ( current_autopilot->get_AltitudeEnabled() ) {
 686                 current_autopilot->AltitudeAdjust( 100 );
 687             } else {
 688                 controls.move_elevator(-0.05);
 689             }
 690             return;
 691         case GLUT_KEY_LEFT:
 692             controls.move_aileron(-0.05);
 693             return;
 694         case GLUT_KEY_RIGHT:
 695             controls.move_aileron(0.05);
 696             return;
 697         case GLUT_KEY_HOME: // numeric keypad 1
 698             controls.move_elevator_trim(0.001);
 699             return;
 700         case GLUT_KEY_END: // numeric keypad 7
 701             controls.move_elevator_trim(-0.001);
 702             return;
 703         case GLUT_KEY_INSERT: // numeric keypad Ins
 704             if ( current_autopilot->get_HeadingEnabled() ) {
 705                 current_autopilot->HeadingAdjust( -1 );
 706             } else {
 707                 controls.move_rudder(-0.05);
 708             }
 709             return;
 710         case 13: // numeric keypad Enter
 711             if ( current_autopilot->get_HeadingEnabled() ) {
 712                 current_autopilot->HeadingAdjust( 1 );
 713             } else {
 714                 controls.move_rudder(0.05);
 715             }
 716             return;
 717         case 53: // numeric keypad 5
 718             controls.set_aileron(0.0);
 719             controls.set_elevator(0.0);
 720             controls.set_rudder(0.0);
 721             return;
 722         case GLUT_KEY_PAGE_UP: // numeric keypad 9 (Pg Up)
 723             if ( current_autopilot->get_AutoThrottleEnabled() ) {
 724                 current_autopilot->AutoThrottleAdjust( 5 );
 725             } else {
 726                 controls.move_throttle( FGControls::ALL_ENGINES, 0.01 );
 727             }
 728             return;
 729         case GLUT_KEY_PAGE_DOWN: // numeric keypad 3 (Pg Dn)
 730             if ( current_autopilot->get_AutoThrottleEnabled() ) {
 731                 current_autopilot->AutoThrottleAdjust( -5 );
 732             } else {
 733                 controls.move_throttle( FGControls::ALL_ENGINES, -0.01 );
 734             }
 735             return;
 736         }
 737     }
 738 }
 739
 740