X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FMain%2Fmain.cxx;h=8c64afae12ef6a81e6590d292b4f6f2bae48edad;hb=93c6d15e194370c67b4d91ef58492002b78049b5;hp=7188ffa3770a48b6e4514885038d02b1b4f7bee0;hpb=1869b30b582002b4b675d1fbed5e9795455a783c;p=flightgear.git

diff --git a/src/Main/main.cxx b/src/Main/main.cxx
index 7188ffa37..07c10598a 100644
--- a/src/Main/main.cxx
+++ b/src/Main/main.cxx
@@ -16,7 +16,7 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 // $Id$
 
@@ -32,29 +32,28 @@
 #  include <signal.h>
 #endif
 
-#ifdef SG_MATH_EXCEPTION_CLASH
-#  include <math.h>
-#endif
-
-#ifdef HAVE_WINDOWS_H
-#  include <windows.h>
-#  include <float.h>
-#endif
+#include <iostream>
 
 #include <plib/netSocket.h>
 
-#include <simgear/props/props.hxx>
-#include <simgear/timing/sg_time.hxx>
-#include <simgear/math/sg_random.h>
+#include <osg/Camera>
+#include <osg/GraphicsContext>
+#include <osgDB/Registry>
 
 // Class references
-#include <simgear/ephemeris/ephemeris.hxx>
 #include <simgear/scene/model/modellib.hxx>
 #include <simgear/scene/material/matlib.hxx>
 #include <simgear/scene/model/animation.hxx>
 #include <simgear/scene/sky/sky.hxx>
+#include <simgear/structure/event_mgr.hxx>
+#include <simgear/props/AtomicChangeListener.hxx>
+#include <simgear/props/props.hxx>
+#include <simgear/timing/sg_time.hxx>
+#include <simgear/math/sg_random.h>
+
 #include <Time/light.hxx>
 #include <Include/general.hxx>
+#include <Aircraft/replay.hxx>
 #include <Cockpit/cockpit.hxx>
 #include <Cockpit/hud.hxx>
 #include <Model/panelnode.hxx>
@@ -62,43 +61,36 @@
 #include <Model/acmodel.hxx>
 #include <Scenery/scenery.hxx>
 #include <Scenery/tilemgr.hxx>
+#include <Sound/fg_fx.hxx>
 #include <Sound/beacon.hxx>
 #include <Sound/morse.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 <Replay/replay.hxx>
+#include <Sound/fg_fx.hxx>
+#include <ATCDCL/ATCmgr.hxx>
+#include <ATCDCL/AIMgr.hxx>
 #include <Time/tmp.hxx>
-#include <Time/fg_timer.hxx>
 #include <Environment/environment_mgr.hxx>
+#include <Environment/ephemeris.hxx>
 #include <GUI/new_gui.hxx>
+#include <MultiPlayer/multiplaymgr.hxx>
 
-#ifdef FG_MPLAYER_AS
-#include <MultiPlayer/multiplaytxmgr.hxx>
-#include <MultiPlayer/multiplayrxmgr.hxx>
-#endif
-
-
-
+#include "CameraGroup.hxx"
 #include "fg_commands.hxx"
 #include "fg_io.hxx"
 #include "renderer.hxx"
 #include "splash.hxx"
 #include "main.hxx"
-
-
+#include "util.hxx"
+#include "fg_init.hxx"
+#include "fg_os.hxx"
+#include "WindowSystemAdapter.hxx"
+#include <Main/viewer.hxx>
 
 static double real_delta_time_sec = 0.0;
 double delta_time_sec = 0.0;
-extern float init_volume;
 
+using namespace flightgear;
 
-#ifdef macintosh
-#  include <console.h>		// -dw- for command line dialog
-#endif
+using std::cerr;
 
 // This is a record containing a bit of global housekeeping information
 FGGeneral general;
@@ -112,114 +104,44 @@ long global_multi_loop;
 SGTimeStamp last_time_stamp;
 SGTimeStamp current_time_stamp;
 
-// The atexit() functio handler should know when the graphical subsystem
+void fgInitSoundManager();
+void fgSetNewSoundDevice(const char *);
+
+// The atexit() function handler should know when the graphical subsystem
 // is initialized.
 extern int _bootstrap_OSInit;
 
-
-
-// Update internal time dependent calculations (i.e. flight model)
-// FIXME: this distinction is obsolete; all subsystems now get delta
-// time on update.
-void fgUpdateTimeDepCalcs() {
-    static bool inited = false;
-
-    static const SGPropertyNode *replay_state
-        = fgGetNode( "/sim/freeze/replay-state", true );
-    static SGPropertyNode *replay_time
-        = fgGetNode( "/sim/replay/time", true );
-    // static const SGPropertyNode *replay_end_time
-    //     = fgGetNode( "/sim/replay/end-time", true );
-
-    //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.
-
-    // cout << "cur_fdm_state->get_inited() = " << cur_fdm_state->get_inited() 
-    //      << " cur_elev = " << scenery.get_cur_elev() << endl;
-
-    if ( !cur_fdm_state->get_inited() &&
-         globals->get_scenery()->get_cur_elev() > -9990 )
-    {
-        SG_LOG(SG_FLIGHT,SG_INFO, "Finally initializing fdm");  
-        cur_fdm_state->init();
-        if ( cur_fdm_state->get_bound() ) {
-            cur_fdm_state->unbind();
-        }
-        cur_fdm_state->bind();
-    }
-
-    // conceptually, the following block could be done for each fdm
-    // instance ...
-    if ( cur_fdm_state->get_inited() ) {
-        // we have been inited, and  we are good to go ...
-
-        if ( !inited ) {
-            inited = true;
-        }
-
-        if ( replay_state->getIntValue() == 0 ) {
-	    // replay off, run fdm
-            cur_fdm_state->update( delta_time_sec );
-        } else {
-            FGReplay *r = (FGReplay *)(globals->get_subsystem( "replay" ));
-            r->replay( replay_time->getDoubleValue() );
-  	    if ( replay_state->getIntValue() == 1 ) {
-                // normal playback
-                replay_time->setDoubleValue( replay_time->getDoubleValue()
-                                             + ( delta_time_sec
-                                               * fgGetInt("/sim/speed-up") ) );
-	    } else if ( replay_state->getIntValue() == 2 ) {
-	        // paused playback (don't advance replay time)
-	    }
-	}
-    } else {
-        // do nothing, fdm isn't inited yet
-    }
-
-    globals->get_model_mgr()->update(delta_time_sec);
-    globals->get_aircraft_model()->update(delta_time_sec);
-
-    // update the view angle
-    globals->get_viewmgr()->update(delta_time_sec);
-
-    // Update solar system
-    globals->get_ephem()->update( globals->get_time_params()->getMjd(),
-                                  globals->get_time_params()->getLst(),
-                                  cur_fdm_state->get_Latitude() );
-
-}
-
-
-void fgInitTimeDepCalcs( void ) {
-    // noop for now
-}
-
-
-static const double alt_adjust_ft = 3.758099;
-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
+    static SGConstPropertyNode_ptr longitude
         = fgGetNode("/position/longitude-deg");
-    static const SGPropertyNode *latitude
+    static SGConstPropertyNode_ptr latitude
         = fgGetNode("/position/latitude-deg");
-    static const SGPropertyNode *altitude
+    static SGConstPropertyNode_ptr altitude
         = fgGetNode("/position/altitude-ft");
-    static const SGPropertyNode *clock_freeze
+    static SGConstPropertyNode_ptr vn_fps
+        = fgGetNode("/velocities/speed-north-fps");
+    static SGConstPropertyNode_ptr ve_fps
+        = fgGetNode("/velocities/speed-east-fps");
+    static SGConstPropertyNode_ptr vd_fps
+        = fgGetNode("/velocities/speed-down-fps");
+    static SGConstPropertyNode_ptr clock_freeze
         = fgGetNode("/sim/freeze/clock", true);
-    static const SGPropertyNode *cur_time_override
+    static SGConstPropertyNode_ptr cur_time_override
         = fgGetNode("/sim/time/cur-time-override", true);
+    static SGConstPropertyNode_ptr max_simtime_per_frame
+        = fgGetNode("/sim/max-simtime-per-frame", true);
+    static SGPropertyNode_ptr frame_signal
+        = fgGetNode("/sim/signals/frame", true);
 
+    frame_signal->fireValueChanged();
     SGCloudLayer::enable_bump_mapping = fgGetBool("/sim/rendering/bump-mapping");
 
-    bool scenery_loaded = fgGetBool("sim/sceneryloaded") || fgGetBool("sim/sceneryloaded-override");
+    bool scenery_loaded = fgGetBool("sim/sceneryloaded");
+    bool wait_for_scenery = !(scenery_loaded || fgGetBool("sim/sceneryloaded-override"));
 
     // Update the elapsed time.
     static bool first_time = true;
@@ -229,8 +151,8 @@ static void fgMainLoop( void ) {
     }
 
     double throttle_hz = fgGetDouble("/sim/frame-rate-throttle-hz", 0.0);
-    if ( throttle_hz > 0.0 && scenery_loaded ) {
-        // optionally throttle the frame rate (to get consistant frame
+    if ( throttle_hz > 0.0 && !wait_for_scenery ) {
+        // optionally throttle the frame rate (to get consistent frame
         // rates or reduce cpu usage.
 
         double frame_us = 1000000.0 / throttle_hz;
@@ -241,18 +163,18 @@ static void fgMainLoop( void ) {
         //
         // Calling sleep, even usleep() on linux is less accurate than
         // we like, but it does free up the cpu for other tasks during
-        // the sleep so it is desireable.  Because of the way sleep()
-        // is implimented in consumer operating systems like windows
+        // the sleep so it is desirable.  Because of the way sleep()
+        // is implemented in consumer operating systems like windows
         // and linux, you almost always sleep a little longer than the
         // requested amount.
-        // 
-        // To combat the problem of sleeping to long, we calculate the
+        //
+        // To combat the problem of sleeping too long, we calculate the
         // desired wait time and shorten it by 2000us (2ms) to avoid
         // [hopefully] over-sleep'ing.  The 2ms value was arrived at
         // via experimentation.  We follow this up at the end with a
         // simple busy-wait loop to get the final pause timing exactly
         // right.
-        // 
+        //
         // Assuming we don't oversleep by more than 2000us, this
         // should be a reasonable compromise between sleep based
         // waiting, and busy waiting.
@@ -265,7 +187,7 @@ static void fgMainLoop( void ) {
         }
         current_time_stamp.stamp();
         /* Convert to ms */
-        double elapsed_us = current_time_stamp - last_time_stamp;
+        double elapsed_us = (current_time_stamp - last_time_stamp).toUSecs();
         if ( elapsed_us < frame_us ) {
             double requested_us = frame_us - elapsed_us;
             ulMilliSecondSleep ( (int)(requested_us / 1000.0) ) ;
@@ -273,12 +195,14 @@ static void fgMainLoop( void ) {
 #endif
 
         // busy wait timing loop.
-        // 
+        //
         // This yields the most accurate timing.  If the previous
-        // ulMilliSecondSleep() call is ommitted this will peg the cpu
+        // ulMilliSecondSleep() call is omitted this will peg the cpu
         // (which is just fine if FG is the only app you care about.)
         current_time_stamp.stamp();
-        while ( current_time_stamp - last_time_stamp < frame_us ) {
+        SGTimeStamp next_time_stamp = last_time_stamp;
+        next_time_stamp += SGTimeStamp::fromSec(1e-6*frame_us);
+        while ( current_time_stamp < next_time_stamp ) {
             current_time_stamp.stamp();
         }
     } else {
@@ -286,35 +210,46 @@ static void fgMainLoop( void ) {
         current_time_stamp.stamp();
     }
 
-    real_delta_time_sec
-        = double(current_time_stamp - last_time_stamp) / 1000000.0;
+    real_delta_time_sec = (current_time_stamp - last_time_stamp).toSecs();
+
+    // Limit the time we need to spend in simulation loops
+    // That means, if the /sim/max-simtime-per-frame value is strictly positive
+    // you can limit the maximum amount of time you will do simulations for
+    // one frame to display. The cpu time spent in simulations code is roughly
+    // at least O(real_delta_time_sec). If this is (due to running debug
+    // builds or valgrind or something different blowing up execution times)
+    // larger than the real time you will no longer get any response
+    // from flightgear. This limits that effect. Just set to property from
+    // your .fgfsrc or commandline ...
+    double dtMax = max_simtime_per_frame->getDoubleValue();
+    if (0 < dtMax && dtMax < real_delta_time_sec)
+        real_delta_time_sec = dtMax;
+
+    SGSubsystemGroup* fdmGroup = 
+      globals->get_subsystem_mgr()->get_group(SGSubsystemMgr::FDM);
+    fdmGroup->set_fixed_update_time(1.0 / model_hz);
+
     // round the real time down to a multiple of 1/model-hz.
     // this way all systems are updated the _same_ amount of dt.
-    {
-      static double rem = 0.0;
-      real_delta_time_sec += rem;
-      double hz = model_hz;
-      double nit = floor(real_delta_time_sec*hz);
-      rem = real_delta_time_sec - nit/hz;
-      real_delta_time_sec = nit/hz;
-    }
-
-
-    if (clock_freeze->getBoolValue() || !scenery_loaded) {
+    static double reminder = 0.0;
+    real_delta_time_sec += reminder;
+    global_multi_loop = long(floor(real_delta_time_sec*model_hz));
+    global_multi_loop = SGMisc<long>::max(0, global_multi_loop);
+    reminder = real_delta_time_sec - double(global_multi_loop)/double(model_hz);
+    real_delta_time_sec = double(global_multi_loop)/double(model_hz);
+
+    if (clock_freeze->getBoolValue() || wait_for_scenery) {
         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 );
-    SGAnimation::set_sim_time_sec( globals->get_sim_time_sec() );
 
     // These are useful, especially for Nasal scripts.
     fgSetDouble("/sim/time/delta-realtime-sec", real_delta_time_sec);
     fgSetDouble("/sim/time/delta-sec", delta_time_sec);
 
-    static long remainder = 0;
-    long elapsed;
 #ifdef FANCY_FRAME_COUNTER
     int i;
     double accum;
@@ -325,34 +260,9 @@ static void fgMainLoop( void ) {
 
     SGTime *t = globals->get_time_params();
 
-    globals->get_event_mgr()->update(delta_time_sec);
-
     SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop");
     SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ====");
 
-#if defined( ENABLE_PLIB_JOYSTICK )
-    // Read joystick and update control settings
-    // if ( fgGetString("/sim/control-mode") == "joystick" )
-    // {
-    //    fgJoystickRead();
-    // }
-#endif
-
-    // Fix elevation.  I'm just sticking this here for now, it should
-    // probably move eventually
-
-    /* printf("Before - ground = %.2f  runway = %.2f  alt = %.2f\n",
-           scenery.get_cur_elev(),
-           cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
-           cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
-
-    /* printf("Adjustment - ground = %.2f  runway = %.2f  alt = %.2f\n",
-           scenery.get_cur_elev(),
-           cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
-           cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
-
-    // cout << "Warp = " << globals->get_warp() << endl;
-
     // update "time"
     static bool last_clock_freeze = false;
 
@@ -385,23 +295,17 @@ static void fgMainLoop( void ) {
                globals->get_warp() );
 
     if (globals->get_warp_delta() != 0) {
-	FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
-	l->update( 0.5 );
+        FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
+        l->update( 0.5 );
     }
 
     // update magvar model
     globals->get_mag()->update( longitude->getDoubleValue()
-                              * SGD_DEGREES_TO_RADIANS,
-                            latitude->getDoubleValue()
-                              * SGD_DEGREES_TO_RADIANS,
-                            altitude->getDoubleValue() * SG_FEET_TO_METER,
-                            globals->get_time_params()->getJD() );
-
-    // Get elapsed time (in usec) for this past frame
-    elapsed = fgGetTimeInterval();
-    SG_LOG( SG_ALL, SG_DEBUG, 
-            "Elapsed time interval is = " << elapsed 
-            << ", previous remainder is = " << remainder );
+                                * SGD_DEGREES_TO_RADIANS,
+                                latitude->getDoubleValue()
+                                * SGD_DEGREES_TO_RADIANS,
+                                altitude->getDoubleValue() * SG_FEET_TO_METER,
+                                globals->get_time_params()->getJD() );
 
     // Calculate frame rate average
 #ifdef FANCY_FRAME_COUNTER
@@ -426,240 +330,158 @@ static void fgMainLoop( void ) {
     if ( (t->get_cur_time() != last_time) && (last_time > 0) ) {
         general.set_frame_rate( frames );
         fgSetInt("/sim/frame-rate", frames);
-        SG_LOG( SG_ALL, SG_DEBUG, 
-            "--> Frame rate is = " << general.get_frame_rate() );
+        SG_LOG( SG_ALL, SG_DEBUG,
+                "--> Frame rate is = " << general.get_frame_rate() );
         frames = 0;
     }
     last_time = t->get_cur_time();
     ++frames;
 #endif
 
+    // Update any multiplayer's network queues, the AIMultiplayer
+    // implementation is an AI model and depends on that
+    globals->get_multiplayer_mgr()->Update();
+
+#if ENABLE_ATCDCL
     // Run ATC subsystem
     if (fgGetBool("/sim/atc/enabled"))
         globals->get_ATC_mgr()->update(delta_time_sec);
 
+
     // Run the AI subsystem
+    // NOTE: the AI_mgr has nothing to do with the AIModels subsystem.
+    // There was previously a comment here stating that the
+    // AI_mgr code should be run then multiplayer is enabled.
+    // Multiplayer relies on AIModels, and not on the old and
+    // depricated AI_mgr system. So, we can safely skip the following
+    // two lines at compile time when compiling with --disable-atcdcl
     if (fgGetBool("/sim/ai-traffic/enabled"))
         globals->get_AI_mgr()->update(delta_time_sec);
-
-#ifdef FG_MPLAYER_AS
-    // Update any multiplayer models
-    globals->get_multiplayer_rx_mgr()->Update();
-#endif
-
-    // Run flight model
-
-    // Calculate model iterations needed for next frame
-    elapsed += remainder;
-
-    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 * model_hz ) {
-        global_multi_loop = (int)(2.0 * model_hz );
-        remainder = 0;
-    }
-
-    // flight model
-    if ( global_multi_loop > 0) {
-        // first run the flight model each frame until it is intialized
-        // then continue running each frame only after initial scenery load is complete.
-        fgUpdateTimeDepCalcs();
-    } else {
-        SG_LOG( SG_ALL, SG_DEBUG, 
-            "Elapsed time is zero ... we're zinging" );
-    }
-
-    // Do any I/O channel work that might need to be done
-    globals->get_io()->update( real_delta_time_sec );
-
-    // see if we need to load any deferred-load textures
-    globals->get_matlib()->load_next_deferred();
-
-    // Run audio scheduler
-#ifdef ENABLE_AUDIO_SUPPORT
-    if ( globals->get_soundmgr()->is_working() ) {
-        globals->get_soundmgr()->update( delta_time_sec );
-    }
-#endif
-
+#endif  
+    
     globals->get_subsystem_mgr()->update(delta_time_sec);
-
+    globals->get_aircraft_model()->update(delta_time_sec);
+    
     //
     // Tile Manager updates - see if we need to load any new scenery tiles.
     //   this code ties together the fdm, viewer and scenery classes...
-    //   we may want to move this to it's own class at some point
+    //   we may want to move this to its own class at some point
     //
     double visibility_meters = fgGetDouble("/environment/visibility-m");
-    FGViewer *current_view = globals->get_current_view();
+    globals->get_tile_mgr()->prep_ssg_nodes( visibility_meters );
 
-    // Let the scenery center follow the current view position with
-    // 30m increments.
-    //
-    // Having the scenery center near the view position will eliminate
-    // jitter of objects which are placed very near the view position
-    // and haveing it's center near that view position.
-    // So the 3d insruments of the aircraft will not jitter with this.
-    // 
-    // Following the view position exactly would introduce jitter of
-    // the scenery tiles (they would be from their center up to 10000m
-    // to the view and this will introduce roundoff too). By stepping
-    // at 30m incements the roundoff error of the scenery tiles is
-    // still present, but we will make exactly the same roundoff error
-    // at each frame until the center is switched to a new
-    // position. This roundoff is still visible but you will most
-    // propably not notice.
-    double *vp = globals->get_current_view()->get_absolute_view_pos();
-    Point3D cntr(vp[0], vp[1], vp[2]);
-    if (30.0*30.0 < cntr.distance3Dsquared(globals->get_scenery()->get_center())) {
-      globals->get_scenery()->set_next_center( cntr );
-    }
+    // update tile manager for view...
+    SGVec3d viewPos = globals->get_current_view()->get_view_pos();
+    SGGeod geodViewPos = SGGeod::fromCart(viewPos);
+    globals->get_tile_mgr()->update(geodViewPos, visibility_meters);
 
-    // get the location data for the primary FDM (now hardcoded to ac model)...
-    SGLocation *acmodel_loc = NULL;
-    acmodel_loc = (SGLocation *)globals->
-        get_aircraft_model()->get3DModel()->getSGLocation();
-
-    // update tile manager for FDM...
-    // ...only if location is different than the current-view location
-    // (to avoid duplicating effort)
-    if( !fgGetBool("/sim/current-view/config/from-model") ) {
-        if( acmodel_loc != NULL ) {
-            globals->get_tile_mgr()->prep_ssg_nodes( acmodel_loc,
-                                                     visibility_meters );
-            globals->get_tile_mgr()->
-                update( acmodel_loc, visibility_meters,
-                        acmodel_loc->
-                        get_absolute_view_pos(globals->
-                                              get_scenery()->get_center()) );
-            globals->get_scenery()->set_center( cntr );
-
-            // save results of update in SGLocation for fdm...
-            if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
-                acmodel_loc->
-                    set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
-                fgSetDouble("/position/ground-elev-m",
-                            globals->get_scenery()->get_cur_elev());
-            }
-            acmodel_loc->
-                set_tile_center( globals->get_scenery()->get_next_center() );
-        }
-    }
+    // run Nasal's settimer() loops right before the view manager
+    globals->get_event_mgr()->update(delta_time_sec);
 
-    globals->get_tile_mgr()->prep_ssg_nodes( current_view->getSGLocation(),
-                                             visibility_meters );
-    // update tile manager for view...
-    // IMPORTANT!!! the tilemgr update for view location _must_ be
-    // done last after the FDM's until all of Flight Gear code
-    // references the viewer's location for elevation instead of the
-    // "scenery's" current elevation.
-    SGLocation *view_location = globals->get_current_view()->getSGLocation();
-    globals->get_tile_mgr()->update( view_location, visibility_meters,
-                                     current_view->get_absolute_view_pos() );
-    globals->get_scenery()->set_center( cntr );
-    // save results of update in SGLocation for fdm...
-    if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
-        current_view->getSGLocation()->
-            set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
-    }
-    current_view->getSGLocation()->
-        set_tile_center( globals->get_scenery()->get_next_center() );
+    // pick up model coordidnates that Nasal code may have set relative to the
+    // aircraft's
+    globals->get_model_mgr()->update(delta_time_sec);
+
+    // update the view angle as late as possible, but before sound calculations
+    globals->get_viewmgr()->update(real_delta_time_sec);
 
+    // Update the sound manager last so it can use the CPU while the GPU
+    // is processing the scenery (doubled the frame-rate for me) -EMH-
 #ifdef ENABLE_AUDIO_SUPPORT
-    // Right now we make a simplifying assumption that the primary
-    // aircraft is the source of all sounds and that all sounds are
-    // positioned relative to the current view position.
-
-    static sgVec3 last_pos_offset;
-
-    // set positional offset for sources
-    sgVec3 source_pos_offset;
-    sgSubVec3( source_pos_offset,
-               view_location->get_view_pos(), acmodel_loc->get_view_pos() );
-    // cout << "pos all = " << source_pos_offset[0] << " " << source_pos_offset[1] << " " << source_pos_offset[2] << endl;
-    globals->get_soundmgr()->set_source_pos_all( source_pos_offset );
-
-    // set the velocity
-    sgVec3 source_vel;
-    sgSubVec3( source_vel, source_pos_offset, last_pos_offset );
-    sgScaleVec3( source_vel, delta_time_sec );
-    sgCopyVec3( last_pos_offset, source_pos_offset );
-    // cout << "vel = " << source_vel[0] << " " << source_vel[1] << " " << source_vel[2] << endl;
-    globals->get_soundmgr()->set_source_vel_all( source_vel );
-
-    // Right now we make a simplifying assumption that the listener is
-    // always positioned at the origin.
-    sgVec3 listener_pos;
-    sgSetVec3( listener_pos, 0.0, 0.0, 0.0 );
-    // cout << "listener = " << listener_pos[0] << " " << listener_pos[1] << " " << listener_pos[2] << endl;
-    globals->get_soundmgr()->set_listener_pos( listener_pos );
-#endif
+    static bool smgr_init = true;
+    static SGPropertyNode *sound_working = fgGetNode("/sim/sound/working");
+    if (smgr_init == true) {
+        if (sound_working->getBoolValue() == true) {
+            fgInitSoundManager();
+            smgr_init = false;
+        }
+    } else {
+        static SGPropertyNode *sound_enabled = fgGetNode("/sim/sound/enabled");
+        static SGSoundMgr *smgr = globals->get_soundmgr();
+        static bool smgr_enabled = true;
+
+        if (sound_working->getBoolValue() == false) {	// request to reinit
+           smgr->reinit();
+           smgr->resume();
+           sound_working->setBoolValue(true);
+        }
 
-    // If fdm location is same as viewer's then we didn't do the
-    // update for fdm location above so we need to save the viewer
-    // results in the fdm SGLocation as well...
-    if( fgGetBool("/sim/current-view/config/from-model") ) {
-        if( acmodel_loc != 0 ) {
-            if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
-                acmodel_loc->set_cur_elev_m( globals->get_scenery()->
-                                             get_cur_elev() );
-                fgSetDouble("/position/ground-elev-m",
-                            globals->get_scenery()->get_cur_elev());
+        if (smgr_enabled != sound_enabled->getBoolValue()) {
+            if (smgr_enabled == true) { // request to suspend
+                smgr->suspend();
+                smgr_enabled = false;
+            } else {
+                smgr->resume();
+                smgr_enabled = true;
             }
-            acmodel_loc->set_tile_center( globals->get_scenery()->
-                                          get_next_center() );
+        }
+
+        if (smgr_enabled == true) {
+            static SGPropertyNode *volume = fgGetNode("/sim/sound/volume");
+            smgr->set_volume(volume->getFloatValue());
+            smgr->update(delta_time_sec);
         }
     }
+#endif
 
     // END Tile Manager udpates
 
-    if (!scenery_loaded && globals->get_tile_mgr()->all_queues_empty() && cur_fdm_state->get_inited()) {
+    if (!scenery_loaded && globals->get_tile_mgr()->isSceneryLoaded()
+        && fgGetBool("sim/fdm-initialized")) {
         fgSetBool("sim/sceneryloaded",true);
-        fgSetFloat("/sim/sound/volume", init_volume);
-        globals->get_soundmgr()->set_volume(init_volume);
-    }
-
-    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);
+        if (fgGetBool("/sim/sound/working")) {
+            globals->get_soundmgr()->activate();
+        }
+        globals->get_props()->tie("/sim/sound/devices/name",
+              SGRawValueFunctions<const char *>(0, fgSetNewSoundDevice), false);
     }
-
+    simgear::AtomicChangeListener::fireChangeListeners();
     fgRequestRedraw();
 
     SG_LOG( SG_ALL, SG_DEBUG, "" );
 }
 
+void fgInitSoundManager()
+{
+    SGSoundMgr *smgr = globals->get_soundmgr();
 
-// This is the top level master main function that is registered as
-// our idle funciton
-
-// The first few passes take care of initialization things (a couple
-// per pass) and once everything has been initialized fgMainLoop from
-// then on.
+    smgr->bind();
+    smgr->init(fgGetString("/sim/sound/device-name", NULL));
 
-static void fgIdleFunction ( void ) {
-    if ( idle_state == 0 ) {
-        idle_state++;
-        fgSplashProgress("setting up scenegraph & user interface");
+    vector <const char*>devices = smgr->get_available_devices();
+    for (unsigned int i=0; i<devices.size(); i++) {
+        SGPropertyNode *p = fgGetNode("/sim/sound/devices/device", i, true);
+        p->setStringValue(devices[i]);
+    }
+    devices.clear();
+}
 
+void fgSetNewSoundDevice(const char *device)
+{
+    globals->get_soundmgr()->suspend();
+    globals->get_soundmgr()->stop();
+    globals->get_soundmgr()->init(device);
+    globals->get_soundmgr()->resume();
+}
 
-    } else if ( idle_state == 1 ) {
-        idle_state++;
-        // This seems to be the absolute earliest in the init sequence
-        // that these calls will return valid info.  Too bad it's after
-        // we've already created and sized out window. :-(
+// Operation for querying OpenGL parameters. This must be done in a
+// valid OpenGL context, potentially in another thread.
+namespace
+{
+struct GeneralInitOperation : public GraphicsContextOperation
+{
+    GeneralInitOperation()
+        : GraphicsContextOperation(std::string("General init"))
+    {
+    }
+    void run(osg::GraphicsContext* gc)
+    {
         general.set_glVendor( (char *)glGetString ( GL_VENDOR ) );
         general.set_glRenderer( (char *)glGetString ( GL_RENDERER ) );
         general.set_glVersion( (char *)glGetString ( GL_VERSION ) );
+        SG_LOG( SG_GENERAL, SG_INFO, general.get_glVendor() );
         SG_LOG( SG_GENERAL, SG_INFO, general.get_glRenderer() );
+        SG_LOG( SG_GENERAL, SG_INFO, general.get_glVersion() );
 
         GLint tmp;
         glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp );
@@ -669,45 +491,51 @@ static void fgIdleFunction ( void ) {
         glGetIntegerv( GL_DEPTH_BITS, &tmp );
         general.set_glDepthBits( tmp );
         SG_LOG ( SG_GENERAL, SG_INFO, "Depth buffer bits = " << tmp );
+    }
+};
+}
+
+// This is the top level master main function that is registered as
+// our idle funciton
 
-        // Initialize ssg (from plib).  Needs to come before we do any
-        // other ssg stuff, but after opengl has been initialized.
-        ssgInit();
+// The first few passes take care of initialization things (a couple
+// per pass) and once everything has been initialized fgMainLoop from
+// then on.
 
-        // Initialize the user interface (we need to do this before
-        // passing off control to the OS main loop and before
-         // fgInitGeneral to get our fonts !!!
-        guiInit();
+static void fgIdleFunction ( void ) {
+    static osg::ref_ptr<GeneralInitOperation> genOp;
+    if ( idle_state == 0 ) {
+        idle_state++;
+        // Pick some window on which to do queries.
+        // XXX Perhaps all this graphics initialization code should be
+        // moved to renderer.cxx?
+        genOp = new GeneralInitOperation;
+        osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
+        WindowSystemAdapter* wsa = WindowSystemAdapter::getWSA();
+        osg::GraphicsContext* gc = 0;
+        if (guiCamera)
+            gc = guiCamera->getGraphicsContext();
+        if (gc) {
+            gc->add(genOp.get());
+        } else {
+            wsa->windows[0]->gc->add(genOp.get());
+        }
+        guiStartInit(gc);
+    } else if ( idle_state == 1 ) {
+        if (genOp.valid()) {
+            if (!genOp->isFinished())
+                return;
+            genOp = 0;
+        }
+        if (!guiFinishInit())
+            return;
+        idle_state++;
         fgSplashProgress("reading aircraft list");
 
 
     } else if ( idle_state == 2 ) {
         idle_state++;
-        // Read the list of available aircrafts
-        fgReadAircraft();
-
-#ifdef GL_EXT_texture_lod_bias
-        glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
-#endif
-
-        // get the address of our OpenGL extensions
-        if ( fgGetBool("/sim/rendering/distance-attenuation") ) {
-            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;
-        }
+                
         fgSplashProgress("reading airport & navigation data");
 
 
@@ -722,14 +550,15 @@ static void fgIdleFunction ( void ) {
         // based on the requested presets, calculate the true starting
         // lon, lat
         fgInitPosition();
+        fgInitTowerLocationListener();
 
         SGTime *t = fgInitTime();
         globals->set_time_params( t );
 
         // Do some quick general initializations
         if( !fgInitGeneral()) {
-            SG_LOG( SG_GENERAL, SG_ALERT, 
-                "General initializations failed ..." );
+            SG_LOG( SG_GENERAL, SG_ALERT,
+                "General initialization failed ..." );
             exit(-1);
         }
 
@@ -743,7 +572,7 @@ static void fgIdleFunction ( void ) {
         // Initialize the material manager
         ////////////////////////////////////////////////////////////////////
         globals->set_matlib( new SGMaterialLib );
-        globals->set_model_lib(new SGModelLib);
+        simgear::SGModelLib::init(globals->get_fg_root());
 
 
         ////////////////////////////////////////////////////////////////////
@@ -766,13 +595,16 @@ static void fgIdleFunction ( void ) {
 
     } else if ( idle_state == 5 ) {
         idle_state++;
+
         ////////////////////////////////////////////////////////////////////
         // Initialize the 3D aircraft model subsystem (has a dependency on
         // the scenery subsystem.)
         ////////////////////////////////////////////////////////////////////
-        globals->set_aircraft_model(new FGAircraftModel);
-        globals->get_aircraft_model()->init();
-        globals->get_aircraft_model()->bind();
+        FGAircraftModel* acm = new FGAircraftModel;
+        globals->set_aircraft_model(acm);
+        //globals->add_subsystem("aircraft-model", acm);
+        acm->init();
+        acm->bind();
 
         ////////////////////////////////////////////////////////////////////
         // Initialize the view manager subsystem.
@@ -787,13 +619,11 @@ static void fgIdleFunction ( void ) {
     } else if ( idle_state == 6 ) {
         idle_state++;
         // Initialize the sky
-        SGPath ephem_data_path( globals->get_fg_root() );
-        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->set_ephem( ephem );
+
+        Ephemeris* eph = new Ephemeris;
+        globals->add_subsystem("ephmeris", eph);
+        eph->init(); // FIXME - remove this once SGSky code below is also a subsystem
+        eph->bind();
 
         // TODO: move to environment mgr
         thesky = new SGSky;
@@ -811,16 +641,14 @@ static void fgIdleFunction ( void ) {
         thesky->texture_path( sky_tex_path.str() );
 
         // The sun and moon diameters are scaled down numbers of the
-        // actual diameters. This was needed to fit bot the sun and the
+        // actual diameters. This was needed to fit both the sun and the
         // moon within the distance to the far clip plane.
         // Moon diameter:    3,476 kilometers
         // Sun diameter: 1,390,000 kilometers
         thesky->build( 80000.0, 80000.0,
                        463.3, 361.8,
-                       globals->get_ephem()->getNumPlanets(), 
-                       globals->get_ephem()->getPlanets(),
-                       globals->get_ephem()->getNumStars(),
-                       globals->get_ephem()->getStars() );
+                       *globals->get_ephem(),
+                       fgGetNode("/environment", true));
 
         // Initialize MagVar model
         SGMagVar *magvar = new SGMagVar();
@@ -840,13 +668,14 @@ static void fgIdleFunction ( void ) {
                                     globals->get_time_params()->getJD() );
         double var = globals->get_mag()->get_magvar() * SGD_RADIANS_TO_DEGREES;
         fgSetDouble("/instrumentation/heading-indicator/offset-deg", -var);
+        fgSetDouble("/instrumentation/heading-indicator-fg/offset-deg", -var);
+
 
         // airport = new ssgBranch;
         // airport->setName( "Airport Lighting" );
         // lighting->addKid( airport );
 
         // build our custom render states
-        globals->get_renderer()->build_states();
         fgSplashProgress("initializing subsystems");
 
 
@@ -860,37 +689,27 @@ static void fgIdleFunction ( void ) {
             SGPath mp3file( globals->get_fg_root() );
             mp3file.append( "Sounds/intro.mp3" );
 
-            SG_LOG( SG_GENERAL, SG_INFO, 
+            SG_LOG( SG_GENERAL, SG_INFO,
                 "Starting intro music: " << mp3file.str() );
 
-#if defined( __CYGWIN__ )
+# if defined( __CYGWIN__ )
             string command = "start /m `cygpath -w " + mp3file.str() + "`";
-#elif defined( WIN32 )
+# elif defined( _WIN32 )
             string command = "start /m " + mp3file.str();
-#else
+# else
             string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1";
-#endif
+# endif
 
             system ( command.c_str() );
         }
 #endif
-
-        // These are a few miscellaneous things that aren't really
-        // "subsystems" but still need to be initialized.
-
-#ifdef USE_GLIDE
-        if ( strstr ( general.get_glRenderer(), "Glide" ) ) {
-            grTexLodBiasValue ( GR_TMU0, 1.0 ) ;
-        }
-#endif
-
         // This is the top level init routine which calls all the
         // other subsystem initialization routines.  If you are adding
-        // a subsystem to flightgear, its initialization call should
+        // a subsystem to flightgear, its initialization call should be
         // located in this routine.
         if( !fgInitSubsystems()) {
             SG_LOG( SG_GENERAL, SG_ALERT,
-                "Subsystem initializations failed ..." );
+                "Subsystem initialization failed ..." );
             exit(-1);
         }
         fgSplashProgress("setting up time & renderer");
@@ -905,12 +724,13 @@ static void fgIdleFunction ( void ) {
         // setup OpenGL view parameters
         globals->get_renderer()->init();
 
-        SG_LOG( SG_GENERAL, SG_INFO, "Panel visible = " << fgPanelVisible() );
         globals->get_renderer()->resize( fgGetInt("/sim/startup/xsize"),
                                          fgGetInt("/sim/startup/ysize") );
 
         fgSplashProgress("loading scenery objects");
-
+        int session = fgGetInt("/sim/session",0);
+        session++;
+        fgSetInt("/sim/session",session);
     }
 
     if ( idle_state == 1000 ) {
@@ -922,15 +742,27 @@ static void fgIdleFunction ( void ) {
 }
 
 
+static void upper_case_property(const char *name)
+{
+    using namespace simgear;
+    SGPropertyNode *p = fgGetNode(name, false);
+    if (!p) {
+        p = fgGetNode(name, true);
+        p->setStringValue("");
+    } else {
+        props::Type t = p->getType();
+        if (t == props::NONE || t == props::UNSPECIFIED)
+            p->setStringValue("");
+        else
+            assert(t == props::STRING);
+    }
+    p->addChangeListener(new FGMakeUpperCase);
+}
+
+
 // Main top level initialization
 bool fgMainInit( int argc, char **argv ) {
 
-#if defined( macintosh )
-    freopen ("stdout.txt", "w", stdout );
-    freopen ("stderr.txt", "w", stderr );
-    argc = ccommand( &argv );
-#endif
-
     // set default log levels
     sglog().setLogLevels( SG_ALL, SG_ALERT );
 
@@ -949,7 +781,7 @@ bool fgMainInit( int argc, char **argv ) {
 
     globals = new FGGlobals;
 
-    // seed the random number generater
+    // seed the random number generator
     sg_srandom_time();
 
     FGControls *controls = new FGControls;
@@ -958,12 +790,18 @@ bool fgMainInit( int argc, char **argv ) {
     string_list *col = new string_list;
     globals->set_channel_options_list( col );
 
+    fgValidatePath("", false);  // initialize static variables
+    upper_case_property("/sim/presets/airport-id");
+    upper_case_property("/sim/presets/runway");
+    upper_case_property("/sim/tower/airport-id");
+    upper_case_property("/autopilot/route-manager/input");
+
     // Scan the config file(s) and command line options to see if
     // fg_root was specified (ignore all other options for now)
     fgInitFGRoot(argc, argv);
 
     // Check for the correct base package version
-    static char required_version[] = "0.9.8";
+    static char required_version[] = "2.0.0";
     string base_version = fgBasePackageVersion();
     if ( !(base_version == required_version) ) {
         // tell the operator how to use this application
@@ -980,13 +818,8 @@ bool fgMainInit( int argc, char **argv ) {
         exit(-1);
     }
 
-    sgUseDisplayList = fgGetBool( "/sim/rendering/use-display-list", true );
-
-    // Initialize the Aircraft directory to "" (UIUC)
-    aircraft_dir = "";
-
     // Load the configuration parameters.  (Command line options
-    // overrides config file options.  Config file options override
+    // override config file options.  Config file options override
     // defaults.)
     if ( !fgInitConfig(argc, argv) ) {
         SG_LOG( SG_GENERAL, SG_ALERT, "Config option parsing failed ..." );
@@ -994,39 +827,22 @@ bool fgMainInit( int argc, char **argv ) {
     }
 
     // Initialize the Window/Graphics environment.
-#if !defined(__APPLE__) || defined(OSX_BUNDLE)
-    // Mac OS X command line ("non-bundle") applications call this
-    // from main(), in bootstrap.cxx.  Andy doesn't know why, someone
-    // feel free to add comments...
     fgOSInit(&argc, argv);
     _bootstrap_OSInit++;
-#endif
 
     fgRegisterWindowResizeHandler( &FGRenderer::resize );
     fgRegisterIdleHandler( &fgIdleFunction );
     fgRegisterDrawHandler( &FGRenderer::update );
 
-#ifdef FG_ENABLE_MULTIPASS_CLOUDS
-    bool get_stencil_buffer = true;
-#else
-    bool get_stencil_buffer = false;
-#endif
-
     // Initialize plib net interface
     netInit( &argc, argv );
 
     // Clouds3D requires an alpha channel
-    // clouds may require stencil buffer
-    fgOSOpenWindow( fgGetInt("/sim/startup/xsize"),
-                    fgGetInt("/sim/startup/ysize"),
-                    fgGetInt("/sim/rendering/bits-per-pixel"),
-                    fgGetBool("/sim/rendering/clouds3d"),
-                    get_stencil_buffer,
-                    fgGetBool("/sim/startup/fullscreen") );
+    fgOSOpenWindow(true /* request stencil buffer */);
 
     // Initialize the splash screen right away
     fntInit();
-    fgSplashInit(fgGetString("/sim/startup/splash-texture"));
+    fgSplashInit();
 
     // pass control off to the master event handler
     fgOSMainLoop();