]> git.mxchange.org Git - flightgear.git/blobdiff - src/Main/main.cxx
Add David Culp's AI model manager code which is derived from David Luff's AI/ATC...
[flightgear.git] / src / Main / main.cxx
index 79fe01a9afe466b167971e213fb85850f04cee88..c021b109644408597761dd0796364f8903e91bb4 100644 (file)
 #  include <config.h>
 #endif
 
+#include <simgear/compiler.h>
+
 #if defined(__linux__) && defined(__i386__)
 #  include <fpu_control.h>
 #  include <signal.h>
 #endif
 
-#include <simgear/compiler.h>
-
-#include STL_IOSTREAM
-SG_USING_STD(cerr);
-SG_USING_STD(endl);
-
-#include <simgear/misc/exception.hxx>
-#include <simgear/ephemeris/ephemeris.hxx>
-#include <simgear/route/route.hxx>
-
-#include <Environment/environment_mgr.hxx>
-
 #ifdef SG_MATH_EXCEPTION_CLASH
 #  include <math.h>
 #endif
@@ -51,121 +41,64 @@ SG_USING_STD(endl);
 #  include <float.h>
 #endif
 
-#include GLUT_H
-
-#include <stdio.h>
-#include <string.h>            // for strcmp()
-#include <string>
-
-#ifdef HAVE_STDLIB_H
-#   include <stdlib.h>
-#endif
-
-#ifdef HAVE_SYS_STAT_H
-#  include <sys/stat.h>                // for stat()
-#endif
-
-#ifdef HAVE_UNISTD_H
-#  include <unistd.h>          // for stat()
-#endif
-
-#include <plib/netChat.h>
-#include <plib/pu.h>
-#include <plib/sg.h>
 #include <plib/ssg.h>
+#include <plib/pu.h>
+#include <plib/netSocket.h>
 
-#include <simgear/constants.h>  // for VERSION
-#include <simgear/debug/logstream.hxx>
-#include <simgear/math/polar3d.hxx>
-#include <simgear/math/sg_random.h>
-#include <simgear/misc/sg_path.hxx>
+#include <simgear/screen/extensions.hxx>
 #include <simgear/scene/material/matlib.hxx>
+#include <simgear/props/props.hxx>
+#include <simgear/scene/sky/sky.hxx>
+#include <simgear/timing/sg_time.hxx>
 #include <simgear/scene/model/animation.hxx>
-#include <simgear/scene/model/location.hxx>
-#include <simgear/scene/model/model.hxx>
+#include <simgear/ephemeris/ephemeris.hxx>
+#include <simgear/scene/model/placement.hxx>
+#include <simgear/math/sg_random.h>
+#include <simgear/route/route.hxx>
 #include <simgear/scene/model/modellib.hxx>
+
 #ifdef FG_USE_CLOUDS_3D
 #  include <simgear/scene/sky/clouds3d/SkySceneLoader.hpp>
 #  include <simgear/scene/sky/clouds3d/SkyUtil.hpp>
 #endif
-#include <simgear/scene/sky/sky.hxx>
-#include <simgear/timing/sg_time.hxx>
 
 #include <Include/general.hxx>
-
+#include <Scenery/tileentry.hxx>
+#include <Time/light.hxx>
+#include <Time/light.hxx>
 #include <Aircraft/aircraft.hxx>
-
-#include <ATC/ATCmgr.hxx>
-#include <ATC/ATCdisplay.hxx>
-#include <ATC/AIMgr.hxx>
-
-#include <Autopilot/newauto.hxx>
-
-#include <Cockpit/hud.hxx>
+#include <Cockpit/panel.hxx>
 #include <Cockpit/cockpit.hxx>
 #include <Cockpit/radiostack.hxx>
-
-#include <FDM/UIUCModel/uiuc_aircraftdir.h>
-#include <GUI/gui.h>
-#include <Model/acmodel.hxx>
-#include <Model/modelmgr.hxx>
+#include <Cockpit/hud.hxx>
 #include <Model/panelnode.hxx>
-#ifdef FG_NETWORK_OLK
-#include <NetworkOLK/network.h>
-#endif
+#include <Model/modelmgr.hxx>
+#include <Model/acmodel.hxx>
+#include <Scenery/scenery.hxx>
+#include <Scenery/tilemgr.hxx>
+#include <FDM/flight.hxx>
+#include <FDM/UIUCModel/uiuc_aircraftdir.h>
+#include <FDM/ADA.hxx>
+#include <ATC/ATCdisplay.hxx>
+#include <ATC/ATCmgr.hxx>
+#include <ATC/AIMgr.hxx>
+#include <Autopilot/newauto.hxx>
+#include <Replay/replay.hxx>
+#include <Time/tmp.hxx>
+#include <Time/fg_timer.hxx>
+#include <Environment/environment_mgr.hxx>
 
 #ifdef FG_MPLAYER_AS
 #include <MultiPlayer/multiplaytxmgr.hxx>
 #include <MultiPlayer/multiplayrxmgr.hxx>
 #endif
 
-#include <Scenery/scenery.hxx>
-#include <Scenery/tilemgr.hxx>
-#ifdef ENABLE_AUDIO_SUPPORT
-#  include <Sound/fg_fx.hxx>
-#  include <Sound/morse.hxx>
-#endif
-#include <Systems/system_mgr.hxx>
-#include <Instrumentation/instrument_mgr.hxx>
-#include <Time/FGEventMgr.hxx>
-#include <Time/fg_timer.hxx>
-#include <Time/light.hxx>
-#include <Time/sunpos.hxx>
-#include <Time/tmp.hxx>
-
-// ADA
-#include <simgear/misc/sgstream.hxx>
-#include <simgear/math/point3d.hxx>
-#include <FDM/flight.hxx>
-#include <FDM/ADA.hxx>
-#include <Scenery/tileentry.hxx>
-
+#include "splash.hxx"
 #include "fg_commands.hxx"
-
-#ifdef FG_EXPERIMENTAL_POINT_LIGHTING
-#ifdef WIN32
-  typedef void (APIENTRY * PFNGLPOINTPARAMETERFEXTPROC)(GLenum pname,
-                                                        GLfloat param);
-  typedef void (APIENTRY * PFNGLPOINTPARAMETERFVEXTPROC)(GLenum pname,
-                                                         const GLfloat *params);
-
-  PFNGLPOINTPARAMETERFEXTPROC glPointParameterfEXT = 0;
-  PFNGLPOINTPARAMETERFVEXTPROC glPointParameterfvEXT = 0;
-#elif linux
-  #include <GL/glx.h>
-
-  typedef void (* OpenGLFuncExt)(GLenum pname, GLfloat param);
-  typedef void (* OpenGLFuncExtv)(GLenum pname, const GLfloat *params);
-
-  OpenGLFuncExt glPointParameterfEXT = 0;
-  OpenGLFuncExtv glPointParameterfvEXT = 0;
-#endif
-#endif
+#include "fg_io.hxx"
+#include "main.hxx"
 
 float default_attenuation[3] = {1.0, 0.0, 0.0};
-//Required for using GL_extensions
-void fgLoadDCS (void);
-void fgUpdateDCS (void);
 ssgSelector *ship_sel=NULL;
 // upto 32 instances of a same object can be loaded.
 ssgTransform *ship_pos[32];
@@ -180,31 +113,22 @@ sgVec3 rway_ols;
 float scene_nearplane = 0.5f;
 float scene_farplane = 120000.0f;
 
-static double delta_time_sec = 0;
+static double real_delta_time_sec = 0.0;
+static double delta_time_sec = 0.0;
+
+glPointParameterfProc glPointParameterfPtr = 0;
+glPointParameterfvProc glPointParameterfvPtr = 0;
+bool glPointParameterIsSupported = false;
 
 
 #ifdef FG_WEATHERCM
 #  include <WeatherCM/FGLocalWeatherDatabase.h>
 #endif
 
-#include "version.h"
-
-#include "fg_init.hxx"
-#include "fg_io.hxx"
-#include "fg_props.hxx"
-#include "globals.hxx"
-#include "splash.hxx"
-#include "viewmgr.hxx"
-#include "options.hxx"
-#include "logger.hxx"
-
 #ifdef macintosh
 #  include <console.h>         // -dw- for command line dialog
 #endif
 
-
-FGEventMgr global_events;
-
 // This is a record containing a bit of global housekeeping information
 FGGeneral general;
 
@@ -224,11 +148,6 @@ static GLfloat rwy_exp2_punch_through;
 static GLfloat taxi_exp2_punch_through;
 static GLfloat ground_exp2_punch_through;
 
-#ifdef FG_NETWORK_OLK
-ssgSelector *fgd_sel = NULL;
-ssgTransform *fgd_pos = NULL;
-#endif
-
 // Sky structures
 SGSky *thesky;
 
@@ -320,9 +239,8 @@ void fgBuildRenderStates( void ) {
 
 // fgInitVisuals() -- Initialize various GL/view parameters
 void fgInitVisuals( void ) {
-    fgLIGHT *l;
 
-    l = &cur_light_params;
+    FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
 
 #ifndef GLUT_WRONG_VERSION
     // Go full screen if requested ...
@@ -341,7 +259,7 @@ void fgInitVisuals( void ) {
     // glLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec );  // done later with ssg
 
     sgVec3 sunpos;
-    sgSetVec3( sunpos, l->sun_vec[0], l->sun_vec[1], l->sun_vec[2] );
+    sgSetVec3( sunpos, l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2] );
     ssgGetLight( 0 ) -> setPosition( sunpos );
 
     glFogi (GL_FOG_MODE, GL_EXP2);
@@ -381,10 +299,10 @@ void trRenderFrame( void ) {
     static GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
     static GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
 
-    fgLIGHT *l = &cur_light_params;
+    FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
 
-    glClearColor(l->adj_fog_color[0], l->adj_fog_color[1], 
-                 l->adj_fog_color[2], l->adj_fog_color[3]);
+    glClearColor(l->adj_fog_color()[0], l->adj_fog_color()[1], 
+                 l->adj_fog_color()[2], l->adj_fog_color()[3]);
 
     glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
 
@@ -394,7 +312,7 @@ void trRenderFrame( void ) {
     glEnable( GL_FOG );
     glFogf  ( GL_FOG_DENSITY, fog_exp2_density);
     glFogi  ( GL_FOG_MODE,    GL_EXP2 );
-    glFogfv ( GL_FOG_COLOR,   l->adj_fog_color );
+    glFogfv ( GL_FOG_COLOR,   l->adj_fog_color() );
 
     // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
     // we only update GL_AMBIENT for our lights we will never get
@@ -403,7 +321,7 @@ void trRenderFrame( void ) {
     glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
     glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE );
 
-    ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
+    ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient() );
 
     // texture parameters
     glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
@@ -411,11 +329,11 @@ void trRenderFrame( void ) {
 
     // we need a white diffuse light for the phase of the moon
     ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
-    thesky->preDraw();
+    thesky->preDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER, fog_exp2_density );
 
     // draw the ssg scene
     // return to the desired diffuse color
-    ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
+    ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse() );
     glEnable( GL_DEPTH_TEST );
     ssgSetNearFar( scene_nearplane, scene_farplane );
     ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
@@ -437,13 +355,14 @@ void trRenderFrame( void ) {
 
 // Update all Visuals (redraws anything graphics related)
 void fgRenderFrame() {
+    bool draw_otw = fgGetBool("/sim/rendering/draw-otw");
+    bool skyblend = fgGetBool("/sim/rendering/skyblend");
+    bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
+    bool distance_attenuation = fgGetBool("/sim/rendering/distance-attenuation");
 
     GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
     GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
 
-    // Process/manage pending events
-    global_events.update( delta_time_sec );
-
     // static const SGPropertyNode *longitude
     //     = fgGetNode("/position/longitude-deg");
     // static const SGPropertyNode *latitude
@@ -458,7 +377,7 @@ void fgRenderFrame() {
 
     FGViewer *current__view = globals->get_current_view();
 
-    fgLIGHT *l = &cur_light_params;
+    FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
     static double last_visibility = -9999;
 
     // update fog params
@@ -535,16 +454,16 @@ void fgRenderFrame() {
             clear_mask |= GL_COLOR_BUFFER_BIT;
         }
 
-        if ( fgGetBool("/sim/rendering/skyblend") ) {
+        if ( skyblend ) {
             if ( fgGetBool("/sim/rendering/textures") ) {
             // glClearColor(black[0], black[1], black[2], black[3]);
-            glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
-                         l->adj_fog_color[2], l->adj_fog_color[3]);
+            glClearColor(l->adj_fog_color()[0], l->adj_fog_color()[1],
+                         l->adj_fog_color()[2], l->adj_fog_color()[3]);
             clear_mask |= GL_COLOR_BUFFER_BIT;
             }
         } else {
-            glClearColor(l->sky_color[0], l->sky_color[1],
-                     l->sky_color[2], l->sky_color[3]);
+            glClearColor(l->sky_color()[0], l->sky_color()[1],
+                         l->sky_color()[2], l->sky_color()[3]);
             clear_mask |= GL_COLOR_BUFFER_BIT;
         }
         glClear( clear_mask );
@@ -567,38 +486,44 @@ void fgRenderFrame() {
         thesky->set_visibility(visibility_meters);
 
         thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
-                        ( global_multi_loop * fgGetInt("/sim/speed-up") )
+                            ( global_multi_loop * fgGetInt("/sim/speed-up") )
                             / (double)fgGetInt("/sim/model-hz") );
 
         // Set correct opengl fog density
         glFogf (GL_FOG_DENSITY, fog_exp2_density);
 
         // update the sky dome
-        if ( fgGetBool("/sim/rendering/skyblend") ) {
+        if ( skyblend ) {
             /*
              SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
-             << cur_light_params.sky_color[0] << " "
-             << cur_light_params.sky_color[1] << " "
-             << cur_light_params.sky_color[2] << " "
-             << cur_light_params.sky_color[3] );
+             << l->sky_color()[0] << " "
+             << l->sky_color()[1] << " "
+             << l->sky_color()[2] << " "
+             << l->sky_color()[3] );
             SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
-             << cur_light_params.fog_color[0] << " "
-             << cur_light_params.fog_color[1] << " "
-             << cur_light_params.fog_color[2] << " "
-             << cur_light_params.fog_color[3] ); 
+             << l->fog_color()[0] << " "
+             << l->fog_color()[1] << " "
+             << l->fog_color()[2] << " "
+             << l->fog_color()[3] ); 
             SG_LOG( SG_GENERAL, SG_BULK,
-                    "    sun_angle = " << cur_light_params.sun_angle
-             << "    moon_angle = " << cur_light_params.moon_angle );
+                    "    sun_angle = " << l->sun_angle
+             << "    moon_angle = " << l->moon_angle );
             */
-            thesky->repaint( cur_light_params.sky_color,
-                             cur_light_params.adj_fog_color,
-                             cur_light_params.cloud_color,
-                             cur_light_params.sun_angle,
-                             cur_light_params.moon_angle,
-                             globals->get_ephem()->getNumPlanets(),
-                             globals->get_ephem()->getPlanets(),
-                             globals->get_ephem()->getNumStars(),
-                             globals->get_ephem()->getStars() );
+
+            static SGSkyColor scolor;
+            FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
+
+            scolor.sky_color   = l->sky_color();
+            scolor.fog_color   = l->adj_fog_color();
+            scolor.cloud_color = l->cloud_color();
+            scolor.sun_angle   = l->get_sun_angle();
+            scolor.moon_angle  = l->get_moon_angle();
+            scolor.nplanets    = globals->get_ephem()->getNumPlanets();
+            scolor.nstars      = globals->get_ephem()->getNumStars();
+            scolor.planet_data = globals->get_ephem()->getPlanets();
+            scolor.star_data   = globals->get_ephem()->getStars();
+
+            thesky->repaint( scolor );
 
             /*
             SG_LOG( SG_GENERAL, SG_BULK,
@@ -610,7 +535,7 @@ void fgRenderFrame() {
              << " lon = " << cur_fdm_state->get_Longitude()
              << " lat = " << cur_fdm_state->get_Latitude() );
             SG_LOG( SG_GENERAL, SG_BULK,
-                    "    sun_rot = " << cur_light_params.sun_rotation
+                    "    sun_rot = " << l->get_sun_rotation
              << " gst = " << SGTime::cur_time_params->getGst() );
             SG_LOG( SG_GENERAL, SG_BULK,
                  "    sun ra = " << globals->get_ephem()->getSunRightAscension()
@@ -624,36 +549,46 @@ void fgRenderFrame() {
             // within the range of the far clip plane.
             // Moon distance:    384,467 kilometers
             // Sun distance: 150,000,000 kilometers
-            double sun_eye_eff = 0.67+pow(0.5+cos(cur_light_params.sun_angle*2)/2,0.33)/3;
-            double moon_eye_eff = 0.67+pow(0.5+cos(cur_light_params.moon_angle*2)/2,0.33)/3;
-            thesky->reposition( current__view->get_view_pos(),
-                                current__view->get_zero_elev(),
-                                current__view->get_world_up(),
-                                current__view->getLongitude_deg()
-                                  * SGD_DEGREES_TO_RADIANS,
-                                current__view->getLatitude_deg()
-                                  * SGD_DEGREES_TO_RADIANS,
-                                current__view->getAltitudeASL_ft()
-                                  * SG_FEET_TO_METER,
-                                cur_light_params.sun_rotation,
-                                globals->get_time_params()->getGst(),
-                                globals->get_ephem()->getSunRightAscension(),
-                                globals->get_ephem()->getSunDeclination(),
-                                50000.0 * sun_eye_eff,
-                                globals->get_ephem()->getMoonRightAscension(),
-                                globals->get_ephem()->getMoonDeclination(),
-                                40000.0 * moon_eye_eff );
+            double sun_horiz_eff, moon_horiz_eff;
+            if (fgGetBool("/sim/rendering/horizon-effect")) {
+            sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
+            moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
+            } else {
+               sun_horiz_eff = moon_horiz_eff = 1.0;
+            }
+
+            static SGSkyState sstate;
+
+            sstate.view_pos  = current__view->get_view_pos();
+            sstate.zero_elev = current__view->get_zero_elev();
+            sstate.view_up   = current__view->get_world_up();
+            sstate.lon       = current__view->getLongitude_deg()
+                                * SGD_DEGREES_TO_RADIANS;
+            sstate.lat       = current__view->getLatitude_deg()
+                                * SGD_DEGREES_TO_RADIANS;
+            sstate.alt       = current__view->getAltitudeASL_ft()
+                                * SG_FEET_TO_METER;
+            sstate.spin      = l->get_sun_rotation();
+            sstate.gst       = globals->get_time_params()->getGst();
+            sstate.sun_ra    = globals->get_ephem()->getSunRightAscension();
+            sstate.sun_dec   = globals->get_ephem()->getSunDeclination();
+            sstate.sun_dist  = 50000.0 * sun_horiz_eff;
+            sstate.moon_ra   = globals->get_ephem()->getMoonRightAscension();
+            sstate.moon_dec  = globals->get_ephem()->getMoonDeclination();
+            sstate.moon_dist = 40000.0 * moon_horiz_eff;
+
+            thesky->reposition( sstate, delta_time_sec );
         }
 
         glEnable( GL_DEPTH_TEST );
         if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
             glEnable( GL_FOG );
             glFogi( GL_FOG_MODE, GL_EXP2 );
-            glFogfv( GL_FOG_COLOR, l->adj_fog_color );
+            glFogfv( GL_FOG_COLOR, l->adj_fog_color() );
         }
 
         // set sun/lighting parameters
-        ssgGetLight( 0 ) -> setPosition( l->sun_vec );
+        ssgGetLight( 0 ) -> setPosition( l->sun_vec() );
 
         // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
         // we only update GL_AMBIENT for our lights we will never get
@@ -661,9 +596,9 @@ void fgRenderFrame() {
         // explicitely to black.
         glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
 
-        ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
-        ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
-        ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_specular );
+        ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient() );
+        ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse() );
+        ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_specular() );
 
         // texture parameters
         // glEnable( GL_TEXTURE_2D );
@@ -689,49 +624,22 @@ void fgRenderFrame() {
 
         ssgSetNearFar( scene_nearplane, scene_farplane );
 
-        // $$$ begin - added VS Renganthan 17 Oct 2K
-        if(objc)
-          fgUpdateDCS();
-        // $$$ end - added VS Renganthan 17 Oct 2K
-
-# ifdef FG_NETWORK_OLK
-        if ( fgGetBool("/sim/networking/network-olk") ) {
-            sgCoord fgdpos;
-            other = head->next;             /* put listpointer to start  */
-            while ( other != tail) {        /* display all except myself */
-            if ( strcmp( other->ipadr, fgd_mcp_ip) != 0) {
-                other->fgd_sel->select(1);
-                sgSetCoord( &fgdpos, other->sgFGD_COORD );
-                other->fgd_pos->setTransform( &fgdpos );
-            }
-            other = other->next;
-            }
-
-            // fgd_sel->select(1);
-            // sgCopyMat4( sgTUX, current_view.sgVIEW);
-            // sgCoord fgdpos;
-            // sgSetCoord( &fgdpos, sgFGD_VIEW );
-            // fgd_pos->setTransform( &fgdpos);
-        }
-# endif
-
 #ifdef FG_MPLAYER_AS
         // Update any multiplayer models
         globals->get_multiplayer_rx_mgr()->Update();
 #endif
 
-        if ( fgGetBool("/sim/rendering/skyblend") &&
-             fgGetBool("/sim/rendering/draw-otw") )
+        if ( draw_otw && skyblend )
         {
             // draw the sky backdrop
 
             // we need a white diffuse light for the phase of the moon
             ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
 
-            thesky->preDraw();
+            thesky->preDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER, fog_exp2_density );
 
             // return to the desired diffuse color
-            ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
+            ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse() );
         }
 
         // draw the ssg scene
@@ -743,7 +651,7 @@ void fgRenderFrame() {
             // draw wire frame
             glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
         }
-        if ( fgGetBool("/sim/rendering/draw-otw") ) {
+        if ( draw_otw ) {
             ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
         }
 
@@ -773,23 +681,27 @@ void fgRenderFrame() {
         glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
         ssgSetNearFar( scene_nearplane, scene_farplane );
 
-#ifdef FG_EXPERIMENTAL_POINT_LIGHTING
-        // Enable states for drawing points with GL_extension
-        glEnable(GL_POINT_SMOOTH);
+        if ( enhanced_lighting ) {
 
-        if ( fgGetBool("/sim/rendering/distance-attenuation")
-             && glutExtensionSupported("GL_EXT_point_parameters") )
-        {
-            float quadratic[3] = {1.0, 0.001, 0.0000001};
-            // makes the points fade as they move away
-            glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, quadratic);
-            glPointParameterfEXT(GL_POINT_SIZE_MIN_EXT, 1.0); 
-        }
-        glPointSize(4.0);
+            // Enable states for drawing points with GL_extension
+            glEnable(GL_POINT_SMOOTH);
 
-        // blending function for runway lights
-        glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
-#endif
+            if ( distance_attenuation && glPointParameterIsSupported )
+            {
+                // Enable states for drawing points with GL_extension
+                glEnable(GL_POINT_SMOOTH);
+
+                float quadratic[3] = {1.0, 0.001, 0.0000001};
+                // makes the points fade as they move away
+                glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT, quadratic);
+                glPointParameterfPtr(GL_POINT_SIZE_MIN_EXT, 1.0); 
+            }
+
+            glPointSize(4.0);
+
+            // blending function for runway lights
+            glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
+        }
 
         glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
         glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
@@ -798,7 +710,7 @@ void fgRenderFrame() {
         glPolygonMode(GL_FRONT, GL_POINT);
 
         // draw runway lighting
-        if ( fgGetBool("/sim/rendering/draw-otw") ) {
+        if ( draw_otw ) {
             ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
         }
 
@@ -807,7 +719,7 @@ void fgRenderFrame() {
         // sgVec3 taxi_fog;
         // sgSetVec3( taxi_fog, 0.0, 0.0, 0.0 );
         // glFogfv ( GL_FOG_COLOR, taxi_fog );
-        if ( fgGetBool("/sim/rendering/draw-otw") ) {
+        if ( draw_otw ) {
             ssgCullAndDraw( globals->get_scenery()->get_taxi_lights_root() );
         }
 
@@ -826,36 +738,33 @@ void fgRenderFrame() {
         //_frame_count++;
 
 
-#ifdef FG_EXPERIMENTAL_POINT_LIGHTING
-        if ( fgGetBool("/sim/rendering/distance-attenuation")
-             && glutExtensionSupported("GL_EXT_point_parameters") )
-        {
-            glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
-                                  default_attenuation);
-        }
+        if ( enhanced_lighting ) {
+            if ( distance_attenuation && glPointParameterIsSupported )
+            {
+                glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT,
+                                      default_attenuation);
+            }
 
-        glPointSize(1.0);
-        glDisable(GL_POINT_SMOOTH);
-#endif
+            glPointSize(1.0);
+            glDisable(GL_POINT_SMOOTH);
+        }
 
         // draw ground lighting
         glFogf (GL_FOG_DENSITY, ground_exp2_punch_through);
-        if ( fgGetBool("/sim/rendering/draw-otw") ) {
+        if ( draw_otw ) {
             ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
         }
 
-        if ( fgGetBool("/sim/rendering/skyblend") ) {
+        if ( skyblend ) {
             // draw the sky cloud layers
-            if ( fgGetBool("/environment/clouds/status") &&
-                 fgGetBool("/sim/rendering/draw-otw") )
+            if ( draw_otw && fgGetBool("/environment/clouds/status") )
             {
                 thesky->postDraw( cur_fdm_state->get_Altitude()
                                   * SG_FEET_TO_METER );
             }
         }
 
-        if ( fgGetBool("/sim/rendering/clouds3d") &&
-             fgGetBool("/sim/rendering/draw-otw") )
+        if ( draw_otw && fgGetBool("/sim/rendering/clouds3d") )
         {
             glDisable( GL_FOG );
             glDisable( GL_LIGHTING );
@@ -882,7 +791,7 @@ void fgRenderFrame() {
             glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
         }
 
-        if ( fgGetBool("/sim/rendering/draw-otw") ) {
+        if ( draw_otw ) {
             globals->get_model_mgr()->draw();
             globals->get_aircraft_model()->draw();
         }
@@ -938,9 +847,14 @@ void fgRenderFrame() {
 void fgUpdateTimeDepCalcs() {
     static bool inited = false;
 
-    //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()");
+    static const SGPropertyNode *replay_master
+        = fgGetNode( "/sim/freeze/replay", true );
+    static SGPropertyNode *replay_time
+        = fgGetNode( "/sim/replay/time", true );
+    static const SGPropertyNode *replay_end_time
+        = fgGetNode( "/sim/replay/end-time", true );
 
-    fgLIGHT *l = &cur_light_params;
+    //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()");
 
     // Initialize the FDM here if it hasn't been and if we have a
     // scenery elevation hit.
@@ -961,17 +875,25 @@ void fgUpdateTimeDepCalcs() {
 
     // conceptually, the following block could be done for each fdm
     // instance ...
-    if ( !cur_fdm_state->get_inited() ) {
-        // do nothing, fdm isn't inited yet
-    } else {
+    if ( cur_fdm_state->get_inited() ) {
         // we have been inited, and  we are good to go ...
 
         if ( !inited ) {
             inited = true;
         }
 
-        globals->get_autopilot()->update(delta_time_sec);
-        cur_fdm_state->update(delta_time_sec);
+        if ( ! replay_master->getBoolValue() ) {
+            globals->get_autopilot()->update( delta_time_sec );
+            cur_fdm_state->update( delta_time_sec );
+        } else {
+            FGReplay *r = (FGReplay *)(globals->get_subsystem( "replay" ));
+            r->replay( replay_time->getDoubleValue() );
+            replay_time->setDoubleValue( replay_time->getDoubleValue()
+                                         + ( delta_time_sec
+                                             * fgGetInt("/sim/speed-up") ) );
+        }
+    } else {
+        // do nothing, fdm isn't inited yet
     }
 
     globals->get_model_mgr()->update(delta_time_sec);
@@ -980,12 +902,10 @@ void fgUpdateTimeDepCalcs() {
     // update the view angle
     globals->get_viewmgr()->update(delta_time_sec);
 
-    l->UpdateAdjFog();
-
     // Update solar system
     globals->get_ephem()->update( globals->get_time_params()->getMjd(),
-                              globals->get_time_params()->getLst(),
-                              cur_fdm_state->get_Latitude() );
+                                  globals->get_time_params()->getLst(),
+                                  cur_fdm_state->get_Latitude() );
 
     // Update radio stack model
     current_radiostack->update(delta_time_sec);
@@ -1004,6 +924,7 @@ static const double alt_adjust_m = alt_adjust_ft * SG_FEET_TO_METER;
 // What should we do when we have nothing else to do?  Let's get ready
 // for the next move and update the display?
 static void fgMainLoop( void ) {
+    int model_hz = fgGetInt("/sim/model-hz");
 
     static const SGPropertyNode *longitude
         = fgGetNode("/position/longitude-deg");
@@ -1015,6 +936,8 @@ static void fgMainLoop( void ) {
         = fgGetNode("/sim/freeze/clock", true);
     static const SGPropertyNode *cur_time_override
         = fgGetNode("/sim/time/cur-time-override", true);
+    static const SGPropertyNode *replay_master
+        = fgGetNode("/sim/freeze/replay", true);
 
     // Update the elapsed time.
     static bool first_time = true;
@@ -1036,9 +959,12 @@ static void fgMainLoop( void ) {
         current_time_stamp.stamp();
     }
 
-    delta_time_sec = double(current_time_stamp - last_time_stamp) / 1000000.0;
+    real_delta_time_sec
+        = double(current_time_stamp - last_time_stamp) / 1000000.0;
     if ( clock_freeze->getBoolValue() ) {
         delta_time_sec = 0;
+    } else {
+        delta_time_sec = real_delta_time_sec;
     }
     last_time_stamp = current_time_stamp;
     globals->inc_sim_time_sec( delta_time_sec );
@@ -1056,8 +982,7 @@ static void fgMainLoop( void ) {
 
     SGTime *t = globals->get_time_params();
 
-    sglog().setLogLevels( SG_ALL, (sgDebugPriority)fgGetInt("/sim/log-level") );
-    sglog().setLogLevels( SG_ALL, SG_INFO );
+    globals->get_event_mgr()->update(delta_time_sec);
 
     SGLocation * acmodel_location = 0;
     if(cur_fdm_state->getACModel() != 0) {
@@ -1067,16 +992,6 @@ static void fgMainLoop( void ) {
     SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop");
     SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ====");
 
-#ifdef FG_NETWORK_OLK
-    if ( fgGetBool("/sim/networking/network-olk") ) {
-        if ( net_is_registered == 0 ) {             // We first have to reg. to fgd
-            // printf("FGD: Netupdate\n");
-            fgd_send_com( "A", FGFS_host);   // Send Mat4 data
-            fgd_send_com( "B", FGFS_host);   // Recv Mat4 data
-        }
-    }
-#endif
-
 #if defined( ENABLE_PLIB_JOYSTICK )
     // Read joystick and update control settings
     // if ( fgGetString("/sim/control-mode") == "joystick" )
@@ -1097,27 +1012,6 @@ static void fgMainLoop( void ) {
            cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
            cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
 
-// Curt is this code used?  I don't see any problems when I comment it out.
-    if ( acmodel_location != 0 ) {
-      if ( acmodel_location->get_cur_elev_m() > -9990 && cur_fdm_state->get_inited() ) {
-        if ( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER < 
-             (acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0) ) {
-            // now set aircraft altitude above ground
-            printf("(*) Current Altitude = %.2f < %.2f forcing to %.2f\n", 
-               cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
-               acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0,
-               acmodel_location->get_cur_elev_m() + alt_adjust_m );
-            cur_fdm_state->set_Altitude( (acmodel_location->get_cur_elev_m() 
-                                                + alt_adjust_m) * SG_METER_TO_FEET );
-            SG_LOG( SG_ALL, SG_DEBUG, 
-                "<*> resetting altitude to " 
-                << cur_fdm_state->get_Altitude() * SG_FEET_TO_METER
-                << " meters" );
-        }
-      }
-    }
-// End of code in question. (see Curt is this code used? above)
-
     /* printf("Adjustment - ground = %.2f  runway = %.2f  alt = %.2f\n",
            scenery.get_cur_elev(),
            cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
@@ -1156,8 +1050,9 @@ static void fgMainLoop( void ) {
                cur_time_override->getLongValue(),
                globals->get_warp() );
 
-    if ( globals->get_warp_delta() != 0 ) {
-        fgUpdateSkyAndLightingParams();
+    if (globals->get_warp_delta() != 0) {
+       FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
+       l->update( 0.5 );
     }
 
     // update magvar model
@@ -1218,18 +1113,16 @@ static void fgMainLoop( void ) {
     // Calculate model iterations needed for next frame
     elapsed += remainder;
 
-    global_multi_loop = (long)(((double)elapsed * 0.000001) * 
-                          fgGetInt("/sim/model-hz"));
-    remainder = elapsed - ( (global_multi_loop*1000000) / 
-                        fgGetInt("/sim/model-hz") );
+    global_multi_loop = (long)(((double)elapsed * 0.000001) * model_hz );
+    remainder = elapsed - ( (global_multi_loop*1000000) / model_hz );
     SG_LOG( SG_ALL, SG_DEBUG, 
             "Model iterations needed = " << global_multi_loop
             << ", new remainder = " << remainder );
         
     // chop max interations to something reasonable if the sim was
     // delayed for an excesive amount of time
-    if ( global_multi_loop > 2.0 * fgGetInt("/sim/model-hz") ) {
-        global_multi_loop = (int)(2.0 * fgGetInt("/sim/model-hz") );
+    if ( global_multi_loop > 2.0 * model_hz ) {
+        global_multi_loop = (int)(2.0 * model_hz );
         remainder = 0;
     }
 
@@ -1242,7 +1135,7 @@ static void fgMainLoop( void ) {
     }
 
     // Do any I/O channel work that might need to be done
-    globals->get_io()->update( delta_time_sec );
+    globals->get_io()->update( real_delta_time_sec );
 
     // see if we need to load any deferred-load textures
     globals->get_matlib()->load_next_deferred();
@@ -1312,6 +1205,14 @@ static void fgMainLoop( void ) {
 
     // END Tile Manager udpates
 
+    if (fgGetBool("/sim/rendering/specular-highlight")) {
+        glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
+       // glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
+    } else {
+        glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SINGLE_COLOR);
+        // glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_FALSE);
+    }
+
     // redraw display
     fgRenderFrame();
 
@@ -1385,6 +1286,10 @@ static void fgIdleFunction ( void ) {
 
         idle_state++;
     } else if ( idle_state == 4 ) {
+        // Initialize the time offset (warp) after fgInitSubsystem
+        // (which initializes the lighting interpolation tables.)
+        fgInitTimeOffset();
+
         // setup OpenGL view parameters
         fgInitVisuals();
 
@@ -1397,11 +1302,13 @@ static void fgIdleFunction ( void ) {
         idle_state++;
     } else if ( idle_state == 6 ) {
         // sleep(1);
+
         idle_state = 1000;
 
         SG_LOG( SG_GENERAL, SG_INFO, "Panel visible = " << fgPanelVisible() );
         fgReshape( fgGetInt("/sim/startup/xsize"),
                fgGetInt("/sim/startup/ysize") );
+
     } 
 
     if ( idle_state == 1000 ) {
@@ -1559,7 +1466,7 @@ static bool fgGlutInitEvents( void ) {
 }
 
 // Main top level initialization
-static bool fgMainInit( int argc, char **argv ) {
+bool fgMainInit( int argc, char **argv ) {
 
 #if defined( macintosh )
     freopen ("stdout.txt", "w", stdout );
@@ -1568,7 +1475,7 @@ static bool fgMainInit( int argc, char **argv ) {
 #endif
 
     // set default log levels
-    sglog().setLogLevels( SG_ALL, SG_INFO );
+    sglog().setLogLevels( SG_ALL, SG_ALERT );
 
     string version;
 #ifdef FLIGHTGEAR_VERSION
@@ -1602,7 +1509,7 @@ static bool fgMainInit( int argc, char **argv ) {
     fgInitFGRoot(argc, argv);
 
     // Check for the correct base package version
-    static char required_version[] = "0.9.2";
+    static char required_version[] = "0.9.3";
     string base_version = fgBasePackageVersion();
     if ( !(base_version == required_version) ) {
         // tell the operator how to use this application
@@ -1633,7 +1540,7 @@ static bool fgMainInit( int argc, char **argv ) {
 
     // Initialize the various GLUT Event Handlers.
     if( !fgGlutInitEvents() ) {
- SG_LOG( SG_GENERAL, SG_ALERT, 
       SG_LOG( SG_GENERAL, SG_ALERT, 
                "GLUT event handler initialization failed ..." );
         exit(-1);
     }
@@ -1657,23 +1564,25 @@ static bool fgMainInit( int argc, char **argv ) {
     glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
 #endif
 
-#ifdef FG_EXPERIMENTAL_POINT_LIGHTING
             // get the address of our OpenGL extensions
     if ( fgGetBool("/sim/rendering/distance-attenuation") )
     {
-#ifdef WIN32
-        glPointParameterfEXT = (PFNGLPOINTPARAMETERFEXTPROC) 
-            wglGetProcAddress("glPointParameterfEXT");
-        glPointParameterfvEXT = (PFNGLPOINTPARAMETERFVEXTPROC) 
-            wglGetProcAddress("glPointParameterfvEXT");
-#elif linux
-        glPointParameterfEXT = (OpenGLFuncExt) 
-            glXGetProcAddressARB((GLubyte *)"glPointParameterfEXT");
-        glPointParameterfvEXT = (OpenGLFuncExtv) 
-            glXGetProcAddressARB((GLubyte *)"glPointParameterfvEXT");
-#endif
+        if (SGIsOpenGLExtensionSupported("GL_EXT_point_parameters") ) {
+            glPointParameterIsSupported = true;
+            glPointParameterfPtr = (glPointParameterfProc)
+                                   SGLookupFunction("glPointParameterfEXT");
+            glPointParameterfvPtr = (glPointParameterfvProc)
+                                    SGLookupFunction("glPointParameterfvEXT");
+
+        } else if ( SGIsOpenGLExtensionSupported("GL_ARB_point_parameters") ) {
+            glPointParameterIsSupported = true;
+            glPointParameterfPtr = (glPointParameterfProc)
+                                   SGLookupFunction("glPointParameterfARB");
+            glPointParameterfvPtr = (glPointParameterfvProc)
+                                    SGLookupFunction("glPointParameterfvARB");
+        } else
+            glPointParameterIsSupported = false;
    }
-#endif
 
     // based on the requested presets, calculate the true starting
     // lon, lat
@@ -1690,9 +1599,6 @@ static bool fgMainInit( int argc, char **argv ) {
         exit(-1);
     }
 
-    SGPath modelpath( globals->get_fg_root() );
-    ssgModelPath( (char *)modelpath.c_str() );
-
     ////////////////////////////////////////////////////////////////////
     // Initialize the property-based built-in commands
     ////////////////////////////////////////////////////////////////////
@@ -1731,7 +1637,6 @@ static bool fgMainInit( int argc, char **argv ) {
     ////////////////////////////////////////////////////////////////////
     // Initialize the view manager subsystem.
     ////////////////////////////////////////////////////////////////////
-
     FGViewMgr *viewmgr = new FGViewMgr;
     globals->set_viewmgr( viewmgr );
     viewmgr->init();
@@ -1743,11 +1648,11 @@ static bool fgMainInit( int argc, char **argv ) {
     ephem_data_path.append( "Astro" );
     SGEphemeris *ephem = new SGEphemeris( ephem_data_path.c_str() );
     ephem->update( globals->get_time_params()->getMjd(),
-               globals->get_time_params()->getLst(),
-               0.0 );
+                   globals->get_time_params()->getLst(),
+                   0.0 );
     globals->set_ephem( ephem );
 
-                            // TODO: move to environment mgr
+    // TODO: move to environment mgr
     thesky = new SGSky;
     SGPath texture_path(globals->get_fg_root());
     texture_path.append("Textures");
@@ -1757,7 +1662,6 @@ static bool fgMainInit( int argc, char **argv ) {
         thesky->add_cloud_layer(layer);
     }
 
-
     SGPath sky_tex_path( globals->get_fg_root() );
     sky_tex_path.append( "Textures" );
     sky_tex_path.append( "Sky" );
@@ -1779,22 +1683,25 @@ static bool fgMainInit( int argc, char **argv ) {
     SGMagVar *magvar = new SGMagVar();
     globals->set_mag( magvar );
 
+
+                                // kludge to initialize mag compass
+                                // (should only be done for in-flight
+                                // startup)
+    // update magvar model
+    globals->get_mag()->update( fgGetDouble("/position/longitude-deg")
+                                * SGD_DEGREES_TO_RADIANS,
+                                fgGetDouble("/position/latitude-deg")
+                                * SGD_DEGREES_TO_RADIANS,
+                                fgGetDouble("/position/altitude-ft")
+                                * SG_FEET_TO_METER,
+                                globals->get_time_params()->getJD() );
+    double var = globals->get_mag()->get_magvar() * SGD_RADIANS_TO_DEGREES;
+    fgSetDouble("/instrumentation/heading-indicator/offset-deg", -var);
+
     // airport = new ssgBranch;
     // airport->setName( "Airport Lighting" );
     // lighting->addKid( airport );
 
-    // ADA
-    fgLoadDCS();
-    // ADA
-
-#ifdef FG_NETWORK_OLK
-    // Do the network intialization
-    if ( fgGetBool("/sim/networking/network-olk") ) {
-        printf("Multipilot mode %s\n",
-               fg_net_init( globals->get_scenery()->get_scene_graph() ) );
-    }
-#endif
-
     // build our custom render states
     fgBuildRenderStates();
     
@@ -1807,412 +1714,4 @@ static bool fgMainInit( int argc, char **argv ) {
 }
 
 
-// $$$ end - added VS Renganathan, 15 Oct 2K
-//         - added Venky         , 12 Nov 2K
-
-#if defined(__linux__) && defined(__i386__)
-
-static void handleFPE (int);
-
-static void
-initFPE ()
-{
-    fpu_control_t fpe_flags = 0;
-    _FPU_GETCW(fpe_flags);
-//     fpe_flags &= ~_FPU_MASK_IM;     // invalid operation
-//     fpe_flags &= ~_FPU_MASK_DM;     // denormalized operand
-//     fpe_flags &= ~_FPU_MASK_ZM;     // zero-divide
-//     fpe_flags &= ~_FPU_MASK_OM;     // overflow
-//     fpe_flags &= ~_FPU_MASK_UM;     // underflow
-//     fpe_flags &= ~_FPU_MASK_PM;     // precision (inexact result)
-    _FPU_SETCW(fpe_flags);
-    signal(SIGFPE, handleFPE);
-}
-
-static void
-handleFPE (int num)
-{
-  initFPE();
-  SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)");
-}
-#endif
-
-#ifdef __APPLE__
-
-typedef struct
-{
-  int  lo;
-  int  hi;
-} PSN;
-
-extern "C" {
-  short CPSGetCurrentProcess(PSN *psn);
-  short CPSSetProcessName (PSN *psn, char *processname);
-  short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5);
-  short CPSSetFrontProcess(PSN *psn);
-};
-
-#define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103)
-
-#endif
-
-// Main entry point; catch any exceptions that have made it this far.
-int main ( int argc, char **argv ) {
-
-    // Enable floating-point exceptions for Linux/x86
-#if defined(__linux__) && defined(__i386__)
-    initFPE();
-#endif
-
-    // Enable floating-point exceptions for Windows
-#if defined( _MSC_VER ) && defined( DEBUG )
-    // Christian, we should document what this does
-    _control87( _EM_INEXACT, _MCW_EM );
-#endif
-
-#if defined( HAVE_BC5PLUS )
-    _control87(MCW_EM, MCW_EM);  /* defined in float.h */
-#endif
-
-    // Keyboard focus hack
-#ifdef __APPLE__
-    {
-      PSN psn;
-
-      glutInit (&argc, argv);
-
-      CPSGetCurrentProcess(&psn);
-      CPSSetProcessName(&psn, "FlightGear");
-      CPSEnableFG(&psn);
-      CPSSetFrontProcess(&psn);
-    }
-#endif
-
-    // FIXME: add other, more specific
-    // exceptions.
-    try {
-        fgMainInit(argc, argv);
-    } catch (sg_throwable &t) {
-                            // We must use cerr rather than
-                            // logging, since logging may be
-                            // disabled.
-        cerr << "Fatal error: " << t.getFormattedMessage()
-             << "\n (received from " << t.getOrigin() << ')' << endl;
-        exit(1);
-    }
-
-    return 0;
-}
-
-
-void fgLoadDCS(void) {
-
-    ssgEntity *ship_obj = NULL;
-
-    char obj_filename[25];
-
-    for ( int k = 0; k < 32; k++ ) {
-        ship_pos[k]=NULL;
-    }
-
-    SGPath tile_path( globals->get_fg_root());
-    tile_path.append( "Scenery" );
-    tile_path.append( "Objects.txt" );
-    sg_gzifstream in( tile_path.str() );
-    if ( ! in.is_open() ) {
-        SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << tile_path.str() );
-    } else {
-
-        SGPath modelpath( globals->get_fg_root() );
-        modelpath.append( "Models" );
-        modelpath.append( "Geometry" );
-  
-        SGPath texturepath( globals->get_fg_root() );
-        texturepath.append( "Models" );
-        texturepath.append( "Textures" );
-        ssgModelPath( (char *)modelpath.c_str() );
-        ssgTexturePath( (char *)texturepath.c_str() );
-
-        ship_sel = new ssgSelector;
-
-        char c;
-        while ( ! in.eof() ) {
-            in >> ::skipws;
-            if ( in.get( c ) && c == '#' ) { 
-                in >> skipeol;
-            } else { 
-                in.putback(c);
-                in >> obj_filename >> obj_lat[objc] >> obj_lon[objc] >> obj_alt[objc];
-                /* cout << endl << obj_filename << " " << obj_lat[objc] << " " << obj_lon[objc] <<  " " << obj_alt[objc] << endl;
-                   int chj=getchar();*/
-                
-                obj_lon[objc] *=SGD_DEGREES_TO_RADIANS;
-                obj_lat[objc] *=SGD_DEGREES_TO_RADIANS;
-                
-                ship_pos[objc] = new ssgTransform;
-       
-                // type "repeat" in objects.txt to load one more
-                // instance of the last object.
-
-                if ( strcmp(obj_filename,"repeat") != 0) {
-                    ship_obj =
-                      globals->get_model_lib()->load_model( globals->get_fg_root(), obj_filename, globals->get_props(), globals->get_sim_time_sec() );
-                }
-      
-                if ( ship_obj != NULL ) {
-                               ship_obj->setName(obj_filename);
-                            if (objc == 0)
-                                       ship_obj->clrTraversalMaskBits( SSGTRAV_HOT );
-                               else
-                                       ship_obj->setTraversalMaskBits( SSGTRAV_HOT );
-                    ship_pos[objc]->addKid( ship_obj ); // add object to transform node
-                    ship_sel->addKid( ship_pos[objc] ); // add transform node to selector
-                    SG_LOG( SG_TERRAIN, SG_ALERT, "Loaded file: "
-                            << obj_filename );
-                } else {
-                    SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: "
-                            << obj_filename );
-                }
-            
-                            // temporary hack for deck lights - ultimately should move to PLib (when??)
-                            //const char *extn = file_extension ( obj_filename ) ;
-                            if ( objc == 1 ){
-                                // ssgVertexArray *lights = new ssgVertexArray( 100 );
-                               ssgVertexArray *lightpoints = new ssgVertexArray( 100 );
-                               ssgVertexArray *lightnormals = new ssgVertexArray( 100 );
-                               ssgVertexArray *lightdir = new ssgVertexArray( 100 );
-                               int ltype[500], light_type = 0;
-                               static int ltcount = 0;
-                                string token;
-                               sgVec3 rway_dir,rway_normal,lightpt;
-                               Point3D node;
-                               modelpath.append(obj_filename);
-                               sg_gzifstream in1( modelpath.str() );
-                               if ( ! in1.is_open() ) {
-                                       SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << modelpath.str() );
-                               } else {
-                                       while ( ! in1.eof() ) {
-                                                        in1 >> ::skipws;
-                                               if ( in1.get( c ) && c == '#' ) { 
-                                                       in1 >> skipeol;
-                                               } else { 
-                                                       in1.putback(c);
-                                                       in1 >> token;
-                                                       //cout << token << endl;
-                                                       if ( token == "runway" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (rway_dir, node[0], node[1], node[2] );                        
-                                                       } else if ( token == "edgelight" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (rway_normal, node[0], node[1], node[2] );
-                                                               light_type = 1;
-                                                       } else if ( token == "taxi" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (rway_normal, node[0], node[1], node[2] );                     
-                                                               light_type = 2;
-                                                       } else if ( token == "vasi" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (rway_normal, node[0], node[1], node[2] );                     
-                                                               light_type = 3;
-                                                       } else if ( token == "threshold" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (rway_normal, node[0], node[1], node[2] );                     
-                                                               light_type = 4;
-                                                       } else if ( token == "rabbit" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (rway_normal, node[0], node[1], node[2] );
-                                                               light_type = 5;
-                                                       } else if ( token == "ols" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (rway_ols, node[0], node[1], node[2] );
-                                                               light_type = 6;
-                                                       } else if ( token == "red" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (rway_normal, node[0], node[1], node[2] );
-                                                               light_type = 7;
-                                                       } else if ( token == "green" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (rway_normal, node[0], node[1], node[2] );
-                                                               light_type = 8;
-                                                       } else if ( token == "lp" ) {
-                                                               in1 >> node;
-                                                               sgSetVec3 (lightpt, node[0], node[1], node[2] );
-                                                               lightpoints->add( lightpt );
-                                                               lightnormals->add( rway_normal );
-                                                               lightdir->add( rway_dir );
-                                                               ltype[ltcount]= light_type;
-                                                               ltcount++;
-                                                       }
-                                                       if (in1.eof()) break;
-                                               } 
-                                       }  //while
-
-#if 0        
-                                       if ( lightpoints->getNum() ) {
-                                               ssgBranch *lightpoints_branch;
-                                               long int dummy = -999;
-                                               dummy_tile = new FGTileEntry((SGBucket)dummy);
-                                               dummy_tile->lightmaps_sequence = new ssgSelector;
-                                               dummy_tile->ols_transform = new ssgTransform;
-
-                                               // call function to generate the runway lights
-                                               lightpoints_branch = 
-                                               dummy_tile->gen_runway_lights( lightpoints, lightnormals,
-                                                                                                                       lightdir, ltype);
-                                               lightpoints_brightness->addKid(lightpoints_branch);
-                                               lightpoints_transform->addKid(lightpoints_brightness);
-                                           //dummy_tile->lightmaps_sequence->setTraversalMaskBits( SSGTRAV_HOT );
-                                               lightpoints_transform->addKid( dummy_tile->lightmaps_sequence );
-                                               lightpoints_transform->ref();
-                                               globals->get_scenery()->get_gnd_lights_root()->addKid( lightpoints_transform );
-                                       } 
-#endif
-                               } //if in1 
-                } //if objc
-                            // end hack for deck lights
-
-                objc++;
-
-                if (in.eof()) break;
-            }
-        } // while
-
-        SG_LOG ( SG_TERRAIN, SG_ALERT, "Finished object processing." );
-
-        globals->get_scenery()->get_terrain_branch()->addKid( ship_sel ); //add selector node to root node 
-    }
-
-    return;
- }
-
-
-void fgUpdateDCS (void) {
-
-    // double eye_lat,eye_lon,eye_alt;
-    // static double obj_head;
-    double sl_radius,obj_latgc;
-    // float nresultmat[4][4];
-    // sgMat4 Trans,rothead,rotlon,rot180,rotlat,resultmat1,resultmat2,resultmat3;
-    double bz[3];
-
-    // Instantaneous Geodetic Lat/Lon/Alt of moving object
-    FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
-    
-    // Deck should be the first object in objects.txt in case of fdm=ada
-
-    if (!strcmp(fgGetString("/sim/flight-model"), "ada")) {
-            if ((fdm->get_iaux(1))==1)
-            {
-                    obj_lat[1] = fdm->get_daux(1)*SGD_DEGREES_TO_RADIANS;
-                    obj_lon[1] = fdm->get_daux(2)*SGD_DEGREES_TO_RADIANS;
-                    obj_alt[1] = fdm->get_daux(3);
-                    obj_pitch[1] = fdm->get_faux(1);
-                    obj_roll[1] = fdm->get_faux(2);
-            }
-    }
-    
-    for ( int m = 0; m < objc; m++ ) {
-       //cout << endl <<  obj_lat[m]*SGD_RADIANS_TO_DEGREES << " " << obj_lon[m]*SGD_RADIANS_TO_DEGREES << " " << obj_alt[m] << " " << objc << endl;
-        //int v=getchar();
-
-        //Geodetic to Geocentric angles for rotation
-        sgGeodToGeoc(obj_lat[m],obj_alt[m],&sl_radius,&obj_latgc);
-
-        //moving object gbs-posn in cartesian coords
-        Point3D obj_posn = Point3D( obj_lon[m],obj_lat[m],obj_alt[m]);
-        Point3D obj_pos = sgGeodToCart( obj_posn );
-
-        // Translate moving object w.r.t eye
-        Point3D Objtrans = obj_pos - globals->get_scenery()->get_center();
-        bz[0]=Objtrans.x();
-        bz[1]=Objtrans.y();
-        bz[2]=Objtrans.z();
-
-       // rotate dynamic objects for lat,lon & alt and other motion about its axes
-        
-        sgMat4 sgTRANS;
-        sgMakeTransMat4( sgTRANS, bz[0],bz[1],bz[2]);
-
-        sgVec3 ship_fwd,ship_rt,ship_up;
-        sgSetVec3( ship_fwd, 1.0, 0.0, 0.0);//east,roll
-        sgSetVec3( ship_rt, 0.0, 1.0, 0.0);//up,pitch
-        sgSetVec3( ship_up, 0.0, 0.0, 1.0); //north,yaw
-
-        sgMat4 sgROT_lon, sgROT_lat, sgROT_hdg, sgROT_pitch, sgROT_roll;
-        sgMakeRotMat4( sgROT_lon, obj_lon[m]*SGD_RADIANS_TO_DEGREES, ship_up );
-        sgMakeRotMat4( sgROT_lat, 90-obj_latgc*SGD_RADIANS_TO_DEGREES, ship_rt );
-        sgMakeRotMat4( sgROT_hdg, 180.0, ship_up );
-        sgMakeRotMat4( sgROT_pitch, obj_pitch[m], ship_rt );
-        sgMakeRotMat4( sgROT_roll, obj_roll[m], ship_fwd );
-        
-        sgMat4 sgTUX;
-        sgCopyMat4( sgTUX, sgROT_hdg );
-        sgPostMultMat4( sgTUX, sgROT_pitch );
-        sgPostMultMat4( sgTUX, sgROT_roll );
-        sgPostMultMat4( sgTUX, sgROT_lat );
-        sgPostMultMat4( sgTUX, sgROT_lon );
-        sgPostMultMat4( sgTUX, sgTRANS );
-
-        sgCoord shippos;
-        sgSetCoord(&shippos, sgTUX );
-        ship_pos[m]->setTransform( &shippos );
-        // temporary hack for deck lights - ultimately should move to PLib (when ??)
-        if (m == 1) {
-            if (lightpoints_transform) {
-                    lightpoints_transform->setTransform( &shippos );
-                    float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES;
-                    if ( sun_angle > 89 ) {
-                            lightpoints_brightness->select(0x01);
-                    } else {
-                            lightpoints_brightness->select(0x00);
-                    }
-            }
-
-            float elev;
-            sgVec3 rp,to;
-            float *vp;
-            float alt;
-            float ref_elev;
-            sgXformPnt3( rp, rway_ols, sgTUX );
-            vp = globals->get_current_view()->get_view_pos();
-            to[0] = rp[0]-vp[0];
-            to[1] = rp[1]-vp[1];
-            to[2] = rp[2]-vp[2];
-            float dist = sgLengthVec3( to );
-            alt = (current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER)-rway_ols[2];
-
-            elev = asin(alt/dist)*SGD_RADIANS_TO_DEGREES;
-
-            ref_elev = elev - 3.75; // +ve above, -ve below
-        
-            unsigned int sel;
-            sel = 0xFF;
-// DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
-//             if (ref_elev > 0.51) sel = 0x21;
-//             if ((ref_elev <= 0.51) & (ref_elev > 0.17)) sel = 0x22;
-//             if ((ref_elev <= 0.17) & (ref_elev >= -0.17)) sel = 0x24;
-//             if ((ref_elev < -0.17) & (ref_elev >= -0.51)) sel = 0x28;
-//             if (ref_elev < -0.51) sel = 0x30;
-// DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
-            // dummy_tile->lightmaps_sequence->select(sel);
-
-            sgVec3 up;
-            sgCopyVec3 (up, ship_up);
-            if (dist > 750) 
-                    sgScaleVec3 (up, 4.0*ref_elev*dist/750.0);
-            else
-                    sgScaleVec3 (up, 4.0*ref_elev);
-            // dummy_tile->ols_transform->setTransform(up);
-            //cout << "ref_elev  " << ref_elev << endl;
-        }
-    // end hack for deck lights
-
-    }
-    if ( ship_sel != NULL ) {
-        ship_sel->select(0xFFFFFFFE); // first object is ownship, added to acmodel
-    }
-}
-
-// $$$ end - added VS Renganathan, 15 Oct 2K
-//           added Venky         , 12 Nov 2K
+// end of main.cxx