X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FMain%2Ffg_init.cxx;h=38370e9f575493ba724cd243c78bd9504b12d74c;hb=13d8e0edab6830be841af3fef6904bbf630ee009;hp=5803f952c8192afed150fd80584701d821a147c8;hpb=47825dcbae3113d4d414b9c2164387211d51b4e1;p=flightgear.git

diff --git a/src/Main/fg_init.cxx b/src/Main/fg_init.cxx
index 5803f952c..38370e9f5 100644
--- a/src/Main/fg_init.cxx
+++ b/src/Main/fg_init.cxx
@@ -31,19 +31,13 @@
 #  include <math.h>
 #endif
 
-#ifdef HAVE_WINDOWS_H
-#  include <windows.h>
-#endif
-
-#include <GL/glut.h>
-
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>		// strcmp()
+#include <string.h>             // strcmp()
 
 
 #if defined( unix ) || defined( __CYGWIN__ )
-#  include <unistd.h>		// for gethostname()
+#  include <unistd.h>           // for gethostname()
 #endif
 
 // work around a stdc++ lib bug in some versions of linux, but doesn't
@@ -63,6 +57,12 @@
 #include <simgear/math/polar3d.hxx>
 #include <simgear/math/sg_geodesy.hxx>
 #include <simgear/misc/sg_path.hxx>
+#include <simgear/scene/material/matlib.hxx>
+#ifdef FG_USE_CLOUDS_3D
+#  include <simgear/scene/sky/clouds3d/SkySceneLoader.hpp>
+#  include <simgear/scene/sky/clouds3d/SkyUtil.hpp>
+#  include <simgear/screen/texture.hxx>
+#endif
 #include <simgear/timing/sg_time.hxx>
 #include <simgear/timing/lowleveltime.h>
 
@@ -72,9 +72,6 @@
 #include <Airports/simple.hxx>
 #include <ATC/ATCdisplay.hxx>
 #include <ATC/ATCmgr.hxx>
-#include <ATC/atislist.hxx>
-#include <ATC/towerlist.hxx>
-#include <ATC/approachlist.hxx>
 #include <ATC/AIMgr.hxx>
 #include <Autopilot/auto_gui.hxx>
 #include <Autopilot/newauto.hxx>
@@ -84,33 +81,42 @@
 #include <Cockpit/panel_io.hxx>
 #include <FDM/ADA.hxx>
 #include <FDM/Balloon.h>
-#include <FDM/External.hxx>
-#include <FDM/ExternalNet.hxx>
+#include <FDM/ExternalNet/ExternalNet.hxx>
+#include <FDM/ExternalPipe/ExternalPipe.hxx>
 #include <FDM/JSBSim/JSBSim.hxx>
-#include <FDM/LaRCsim.hxx>
+#include <FDM/LaRCsim/LaRCsim.hxx>
 #include <FDM/MagicCarpet.hxx>
 #include <FDM/UFO.hxx>
 #include <FDM/NullFDM.hxx>
 #include <FDM/YASim/YASim.hxx>
+#include <GUI/new_gui.hxx>
 #include <Include/general.hxx>
 #include <Input/input.hxx>
-// #include <Joystick/joystick.hxx>
-#include <Objects/matlib.hxx>
+#include <Instrumentation/instrument_mgr.hxx>
 #include <Model/acmodel.hxx>
 #include <Navaids/fixlist.hxx>
 #include <Navaids/ilslist.hxx>
 #include <Navaids/mkrbeacons.hxx>
 #include <Navaids/navlist.hxx>
+#include <Replay/replay.hxx>
 #include <Scenery/scenery.hxx>
 #include <Scenery/tilemgr.hxx>
+#if defined(HAVE_PLIB_PSL)
+#include <Scripting/scriptmgr.hxx>
+#endif
 #include <Sound/fg_fx.hxx>
-#include <Sound/soundmgr.hxx>
+#include <Systems/system_mgr.hxx>
 #include <Time/FGEventMgr.hxx>
 #include <Time/light.hxx>
 #include <Time/sunpos.hxx>
 #include <Time/moonpos.hxx>
 #include <Time/tmp.hxx>
 
+#ifdef FG_MPLAYER_AS
+#include <MultiPlayer/multiplaytxmgr.hxx>
+#include <MultiPlayer/multiplayrxmgr.hxx>
+#endif
+
 #ifdef FG_WEATHERCM
 #  include <WeatherCM/FGLocalWeatherDatabase.h>
 #else
@@ -132,50 +138,126 @@
 
 SG_USING_STD(string);
 
+
+class Sound;
+
 extern const char *default_root;
 
+#ifdef FG_USE_CLOUDS_3D
+  SkySceneLoader *sgCloud3d;
+#endif
+
+
+// Scan the command line options for the specified option and return
+// the value.
+static string fgScanForOption( const string& option, int argc, char **argv ) {
+    int i = 1;
+
+    SG_LOG(SG_GENERAL, SG_INFO, "Scanning command line for: " << option );
+
+    int len = option.length();
+
+    while ( i < argc ) {
+	SG_LOG( SG_GENERAL, SG_DEBUG, "argv[" << i << "] = " << argv[i] );
+
+	string arg = argv[i];
+	if ( arg.find( option ) == 0 ) {
+	    return arg.substr( len );
+	}
+
+	i++;
+    }
+
+    return "";
+}
+
+
+// Scan the user config files for the specified option and return
+// the value.
+static string fgScanForOption( const string& option, const string& path ) {
+    sg_gzifstream in( path );
+    if ( !in.is_open() ) {
+        return "";
+    }
+
+    SG_LOG( SG_GENERAL, SG_INFO, "Scanning " << path << " for: " << option );
+
+    int len = option.length();
+
+    in >> skipcomment;
+#ifndef __MWERKS__
+    while ( ! in.eof() ) {
+#else
+    char c = '\0';
+    while ( in.get(c) && c != '\0' ) {
+	in.putback(c);
+#endif
+	string line;
+
+#if defined( macintosh )
+        getline( in, line, '\r' );
+#else
+	getline( in, line, '\n' );
+#endif
+
+        // catch extraneous (DOS) line ending character
+        if ( line[line.length() - 1] < 32 ) {
+            line = line.substr( 0, line.length()-1 );
+        }
+
+	if ( line.find( option ) == 0 ) {
+	    return line.substr( len );
+	}
+
+	in >> skipcomment;
+    }
+
+    return "";
+}
+
 
-// Read in configuration (file and command line) and just set fg_root
+// Read in configuration (files and command line options) but only set
+// fg_root
 bool fgInitFGRoot ( int argc, char **argv ) {
     string root;
     char* envp;
 
-    // First parse command line options looking for fg-root, this will
-    // override anything specified in a config file
-    root = fgScanForRoot(argc, argv);
+    // First parse command line options looking for --fg-root=, this
+    // will override anything specified in a config file
+    root = fgScanForOption( "--fg-root=", argc, argv);
 
 #if defined( unix ) || defined( __CYGWIN__ )
     // Next check home directory for .fgfsrc.hostname file
     if ( root.empty() ) {
-	envp = ::getenv( "HOME" );
-	if ( envp != NULL ) {
-	    SGPath config( envp );
-	    config.append( ".fgfsrc" );
-	    char name[256];
-	    gethostname( name, 256 );
-	    config.concat( "." );
-	    config.concat( name );
- 	    root = fgScanForRoot(config.str());
-	}
+        envp = ::getenv( "HOME" );
+        if ( envp != NULL ) {
+            SGPath config( envp );
+            config.append( ".fgfsrc" );
+            char name[256];
+            gethostname( name, 256 );
+            config.concat( "." );
+            config.concat( name );
+            root = fgScanForOption( "--fg-root=", config.str() );
+        }
     }
 #endif
 
     // Next check home directory for .fgfsrc file
     if ( root.empty() ) {
-	envp = ::getenv( "HOME" );
-	if ( envp != NULL ) {
-	    SGPath config( envp );
-	    config.append( ".fgfsrc" );
-	    root = fgScanForRoot(config.str());
-	}
+        envp = ::getenv( "HOME" );
+        if ( envp != NULL ) {
+            SGPath config( envp );
+            config.append( ".fgfsrc" );
+            root = fgScanForOption( "--fg-root=", config.str() );
+        }
     }
     
     // Next check if fg-root is set as an env variable
     if ( root.empty() ) {
-	envp = ::getenv( "FG_ROOT" );
-	if ( envp != NULL ) {
-	    root = envp;
-	}
+        envp = ::getenv( "FG_ROOT" );
+        if ( envp != NULL ) {
+            root = envp;
+        }
     }
 
     // Otherwise, default to a random compiled-in location if we can't
@@ -184,11 +266,11 @@ bool fgInitFGRoot ( int argc, char **argv ) {
 #if defined( __CYGWIN__ )
         root = "/FlightGear";
 #elif defined( WIN32 )
-	root = "\\FlightGear";
+        root = "\\FlightGear";
 #elif defined( macintosh )
-	root = "";
+        root = "";
 #else
-	root = PKGLIBDIR;
+        root = PKGLIBDIR;
 #endif
     }
 
@@ -199,6 +281,54 @@ bool fgInitFGRoot ( int argc, char **argv ) {
 }
 
 
+// Read in configuration (files and command line options) but only set
+// aircraft
+bool fgInitFGAircraft ( int argc, char **argv ) {
+    string aircraft;
+    char* envp;
+
+    // First parse command line options looking for --aircraft=, this
+    // will override anything specified in a config file
+    aircraft = fgScanForOption( "--aircraft=", argc, argv );
+
+#if defined( unix ) || defined( __CYGWIN__ )
+    // Next check home directory for .fgfsrc.hostname file
+    if ( aircraft.empty() ) {
+        envp = ::getenv( "HOME" );
+        if ( envp != NULL ) {
+            SGPath config( envp );
+            config.append( ".fgfsrc" );
+            char name[256];
+            gethostname( name, 256 );
+            config.concat( "." );
+            config.concat( name );
+            aircraft = fgScanForOption( "--aircraft=", config.str() );
+        }
+    }
+#endif
+
+    // Next check home directory for .fgfsrc file
+    if ( aircraft.empty() ) {
+        envp = ::getenv( "HOME" );
+        if ( envp != NULL ) {
+            SGPath config( envp );
+            config.append( ".fgfsrc" );
+            aircraft = fgScanForOption( "--aircraft=", config.str() );
+        }
+    }
+
+    // if an aircraft was specified, set the property name
+    if ( !aircraft.empty() ) {
+        SG_LOG(SG_INPUT, SG_INFO, "aircraft = " << aircraft );
+        fgSetString("/sim/aircraft", aircraft.c_str() );
+    } else {
+        SG_LOG(SG_INPUT, SG_INFO, "No user specified aircraft, using default" );
+    }
+
+    return true;
+}
+
+
 // Return the current base package version
 string fgBasePackageVersion() {
     SGPath base_path( globals->get_fg_root() );
@@ -206,14 +336,14 @@ string fgBasePackageVersion() {
 
     sg_gzifstream in( base_path.str() );
     if ( !in.is_open() ) {
-	SGPath old_path( globals->get_fg_root() );
-	old_path.append( "Thanks" );
-	sg_gzifstream old( old_path.str() );
-	if ( !old.is_open() ) {
-	    return "[none]";
-	} else {
-	    return "[old version]";
-	}
+        SGPath old_path( globals->get_fg_root() );
+        old_path.append( "Thanks" );
+        sg_gzifstream old( old_path.str() );
+        if ( !old.is_open() ) {
+            return "[none]";
+        } else {
+            return "[old version]";
+        }
     }
 
     string version;
@@ -223,43 +353,124 @@ string fgBasePackageVersion() {
 }
 
 
-// Read in configuration (file and command line)
-bool fgInitConfig ( int argc, char **argv ) {
+// Initialize the localization
+SGPropertyNode *fgInitLocale(const char *language) {
+   SGPropertyNode *c_node = NULL, *d_node = NULL;
+   SGPropertyNode *intl = fgGetNode("/sim/intl");
 
-				// First, set some sane default values
-    fgSetDefaults();
+   SG_LOG(SG_GENERAL, SG_INFO, "Selecting language: " << language );
 
-    // Read global preferences from $FG_ROOT/preferences.xml
-    SGPath props_path(globals->get_fg_root());
-    props_path.append("preferences.xml");
-    SG_LOG(SG_INPUT, SG_INFO, "Reading global preferences");
-    readProperties(props_path.str(), globals->get_props());
-    SG_LOG(SG_INPUT, SG_INFO, "Finished Reading global preferences");
+   // localization not defined
+   if (!intl)
+      return NULL;
+
+   //
+   // Select the proper language from the list
+   //
+   vector<SGPropertyNode_ptr> locale = intl->getChildren("locale");
+   for (unsigned int i = 0; i < locale.size(); i++) {
+
+      vector<SGPropertyNode_ptr> lang = locale[i]->getChildren("lang");
+      for (unsigned int j = 0; j < lang.size(); j++) {
+
+         if (!strcmp(lang[j]->getStringValue(), language)) {
+            c_node = locale[i];
+            break;
+         }
+      }
+   }
+
+
+   // Get the defaults
+   d_node = intl->getChild("locale");
+   if (!c_node)
+      c_node = d_node;
+
+   // Check for localized font
+   SGPropertyNode *font_n = c_node->getNode("font", true);
+   if ( !strcmp(font_n->getStringValue(), "") )
+      font_n->setStringValue(d_node->getStringValue("font", "typewriter.txf"));
+
+
+   //
+   // Load the default strings
+   //
+   SGPath d_path( globals->get_fg_root() );
+
+   const char *d_path_str = d_node->getStringValue("strings");
+   if (!d_path_str) {
+      SG_LOG(SG_GENERAL, SG_ALERT, "Incorrect path in configuration file.");
+      return NULL;
+   }
+
+   d_path.append(d_path_str);
+   SG_LOG(SG_GENERAL, SG_INFO, "Reading localized strings from "
+                                  << d_path.str());
+
+   SGPropertyNode *strings = c_node->getNode("strings");
+   try {
+      readProperties(d_path.str(), strings);
+   } catch (const sg_exception &e) {
+      SG_LOG(SG_GENERAL, SG_ALERT, "Unable to read the localized strings");
+      return NULL;
+   }
+
+   //
+   // Load the language specific strings
+   //
+   if (c_node != d_node) {
+      SGPath c_path( globals->get_fg_root() );
+
+      const char *c_path_str = c_node->getStringValue("strings");
+      if (!c_path_str) {
+         SG_LOG(SG_GENERAL, SG_ALERT, "Incorrect path in configuration file.");
+         return NULL;
+      }
+
+      c_path.append(c_path_str);
+      SG_LOG(SG_GENERAL, SG_INFO, "Reading localized strings from "
+                                     << c_path.str());
 
-    // Read the default aircraft config file.
-    string aircraft = fgGetString("/sim/aircraft", "");
-    if (aircraft.size() > 0) {
-      SGPath aircraft_path(globals->get_fg_root());
-      aircraft_path.append("Aircraft");
-      aircraft_path.append(aircraft);
-      aircraft_path.concat("-set.xml");
-      SG_LOG(SG_INPUT, SG_INFO, "Reading default aircraft: " << aircraft
-	     << " from " << aircraft_path.str());
       try {
-	readProperties(aircraft_path.str(), globals->get_props());
+         readProperties(c_path.str(), strings);
       } catch (const sg_exception &e) {
-	string message = "Error reading default aircraft: ";
-	message += e.getFormattedMessage();
-	SG_LOG(SG_INPUT, SG_ALERT, message);
-	exit(2);
+         SG_LOG(SG_GENERAL, SG_ALERT, "Unable to read the localized strings");
+         return NULL;
       }
-    } else {
-      SG_LOG(SG_INPUT, SG_ALERT, "No default aircraft specified");
+   }
+
+   return c_node;
+}
+
+
+
+// Initialize the localization routines
+bool fgDetectLanguage() {
+    char *language = ::getenv("LANG");
+
+    if (language == NULL) {
+        SG_LOG(SG_GENERAL, SG_INFO, "Unable to detect the language" );
+        language = "C";
     }
 
-    // Attempt to locate and parse the various config files in order
-    // from least precidence to greatest precidence
+    SGPropertyNode *locale = fgInitLocale(language);
+    if (!locale) {
+       SG_LOG(SG_GENERAL, SG_ALERT,
+              "No internationalization settings specified in preferences.xml" );
 
+       return false;
+    }
+
+    globals->set_locale( locale );
+
+    return true;
+}
+
+// Attempt to locate and parse the various non-XML config files in order
+// from least precidence to greatest precidence
+static void
+do_options (int argc, char ** argv)
+{
     // Check for $fg_root/system.fgfsrc
     SGPath config( globals->get_fg_root() );
     config.append( "system.fgfsrc" );
@@ -277,9 +488,9 @@ bool fgInitConfig ( int argc, char **argv ) {
     // Check for ~/.fgfsrc
     char* envp = ::getenv( "HOME" );
     if ( envp != NULL ) {
-	config.set( envp );
-	config.append( ".fgfsrc" );
-	fgParseOptions(config.str());
+        config.set( envp );
+        config.append( ".fgfsrc" );
+        fgParseOptions(config.str());
     }
 
 #if defined( unix ) || defined( __CYGWIN__ )
@@ -293,6 +504,69 @@ bool fgInitConfig ( int argc, char **argv ) {
     // Parse remaining command line options
     // These will override anything specified in a config file
     fgParseArgs(argc, argv);
+}
+
+
+// Read in configuration (file and command line)
+bool fgInitConfig ( int argc, char **argv ) {
+
+    // First, set some sane default values
+    fgSetDefaults();
+
+    // Read global preferences from $FG_ROOT/preferences.xml
+    SG_LOG(SG_INPUT, SG_INFO, "Reading global preferences");
+    fgLoadProps("preferences.xml", globals->get_props());
+    SG_LOG(SG_INPUT, SG_INFO, "Finished Reading global preferences");
+
+    // Detect the required language as early as possible
+    if ( !fgDetectLanguage() ) {
+        return false;
+    }
+
+    // Scan user config files and command line for a specified aircraft.
+    fgInitFGAircraft(argc, argv);
+
+    string aircraft = fgGetString("/sim/aircraft", "");
+    if ( aircraft.size() > 0 ) {
+        SGPath aircraft_path(globals->get_fg_root());
+        aircraft_path.append("Aircraft");
+        aircraft_path.append(aircraft);
+        aircraft_path.concat("-set.xml");
+
+        if ( !ulFileExists(aircraft_path.c_str()) ) {
+            string adir = aircraft;
+            int pos, alen = adir.length();
+
+            if ( ((pos = adir.rfind("-jsbsim")) != string::npos) ||
+                 ((pos = adir.rfind("-yasim")) != string::npos) ||
+                 ((pos = adir.rfind("-uiuc")) != string::npos) )
+            {
+                adir.erase(pos, alen);
+            }
+
+            aircraft_path = globals->get_fg_root();
+            aircraft_path.append("Aircraft");
+            aircraft_path.append(adir);
+            aircraft_path.append(aircraft);
+            aircraft_path.concat("-set.xml");
+        }
+        SG_LOG(SG_INPUT, SG_INFO, "Reading default aircraft: " << aircraft
+               << " from " << aircraft_path.str());
+        try {
+            readProperties(aircraft_path.str(), globals->get_props());
+        } catch (const sg_exception &e) {
+            string message = "Error reading default aircraft: ";
+            message += e.getFormattedMessage();
+            SG_LOG(SG_INPUT, SG_ALERT, message);
+            exit(2);
+        }
+    } else {
+        SG_LOG(SG_INPUT, SG_ALERT, "No default aircraft specified");
+    }
+
+    // parse options after loading aircraft to ensure any user
+    // overrides of defaults are honored.
+    do_options(argc, argv);
 
     return true;
 }
@@ -300,59 +574,79 @@ bool fgInitConfig ( int argc, char **argv ) {
 
 // find basic airport location info from airport database
 bool fgFindAirportID( const string& id, FGAirport *a ) {
+    FGAirport result;
     if ( id.length() ) {
-	SGPath path( globals->get_fg_root() );
-	path.append( "Airports" );
-	path.append( "simple.mk4" );
-	FGAirports airports( path.c_str() );
+        SG_LOG( SG_GENERAL, SG_INFO, "Searching for airport code = " << id );
 
-	SG_LOG( SG_GENERAL, SG_INFO, "Searching for airport code = " << id );
+        result = globals->get_airports()->search( id );
 
-	if ( ! airports.search( id, a ) ) {
-	    SG_LOG( SG_GENERAL, SG_ALERT,
-		    "Failed to find " << id << " in " << path.str() );
-	    return false;
-	}
+        if ( result.id.empty() ) {
+            SG_LOG( SG_GENERAL, SG_ALERT,
+                    "Failed to find " << id << " in basic.dat.gz" );
+            return false;
+        }
     } else {
-	return false;
+        return false;
     }
 
+    *a = result;
+
     SG_LOG( SG_GENERAL, SG_INFO,
-	    "Position for " << id << " is ("
-	    << a->longitude << ", "
-	    << a->latitude << ")" );
+            "Position for " << id << " is ("
+            << a->longitude << ", "
+            << a->latitude << ")" );
 
     return true;
 }
 
 
-// Set current_options lon/lat given an airport id
-bool fgSetPosFromAirportID( const string& id ) {
+// get airport elevation
+static double fgGetAirportElev( const string& id ) {
     FGAirport a;
     // double lon, lat;
 
     SG_LOG( SG_GENERAL, SG_INFO,
-	    "Attempting to set starting position from airport code " << id );
+            "Finding elevation for airport: " << id );
 
     if ( fgFindAirportID( id, &a ) ) {
-	fgSetDouble("/position/longitude-deg",  a.longitude );
-	fgSetDouble("/position/latitude-deg",  a.latitude );
-	SG_LOG( SG_GENERAL, SG_INFO,
-		"Position for " << id << " is ("
-		<< a.longitude << ", "
-		<< a.latitude << ")" );
-
-	return true;
+        return a.elevation;
     } else {
-	return false;
+        return -9999.0;
     }
-
 }
 
 
+// Preset lon/lat given an airport id
+static bool fgSetPosFromAirportID( const string& id ) {
+    FGAirport a;
+    // double lon, lat;
+
+    SG_LOG( SG_GENERAL, SG_INFO,
+            "Attempting to set starting position from airport code " << id );
+
+    if ( fgFindAirportID( id, &a ) ) {
+        // presets
+        fgSetDouble("/sim/presets/longitude-deg", a.longitude );
+        fgSetDouble("/sim/presets/latitude-deg", a.latitude );
+
+        // other code depends on the actual postition being set so set
+        // that as well
+        fgSetDouble("/position/longitude-deg", a.longitude );
+        fgSetDouble("/position/latitude-deg", a.latitude );
+
+        SG_LOG( SG_GENERAL, SG_INFO,
+                "Position for " << id << " is (" << a.longitude
+                << ", " << a.latitude << ")" );
+
+        return true;
+    } else {
+        return false;
+    }
+}
+
 
 // Set current tower position lon/lat given an airport id
-bool fgSetTowerPosFromAirportID( const string& id, double hdg ) {
+static bool fgSetTowerPosFromAirportID( const string& id, double hdg ) {
     FGAirport a;
     // tower height hard coded for now...
     float towerheight=50.0f;
@@ -362,168 +656,441 @@ bool fgSetTowerPosFromAirportID( const string& id, double hdg ) {
     float fudge_lat = .003f - fudge_lon;
 
     if ( fgFindAirportID( id, &a ) ) {
-	fgSetDouble("/sim/tower/longitude-deg",  a.longitude + fudge_lon);
-	fgSetDouble("/sim/tower/latitude-deg",  a.latitude + fudge_lat);
+        fgSetDouble("/sim/tower/longitude-deg",  a.longitude + fudge_lon);
+        fgSetDouble("/sim/tower/latitude-deg",  a.latitude + fudge_lat);
         fgSetDouble("/sim/tower/altitude-ft", a.elevation + towerheight);
-	return true;
+        return true;
     } else {
-	return false;
+        return false;
     }
 
 }
 
 
 // Set current_options lon/lat given an airport id and heading (degrees)
-bool fgSetPosFromAirportIDandHdg( const string& id, double tgt_hdg ) {
+static bool fgSetPosFromAirportIDandHdg( const string& id, double tgt_hdg ) {
     FGRunway r;
-    FGRunway found_r;
-    double found_dir = 0.0;
 
     if ( id.length() ) {
         // set initial position from runway and heading
 
-        SGPath path( globals->get_fg_root() );
-        path.append( "Airports" );
-        path.append( "runways.mk4" );
-        FGRunways runways( path.c_str() );
-
         SG_LOG( SG_GENERAL, SG_INFO,
-                "Attempting to set starting position from runway code "
+                "Attempting to set starting position from airport code "
                 << id << " heading " << tgt_hdg );
-
-        // SGPath inpath( globals->get_fg_root() );
-        // inpath.append( "Airports" );
-        // inpath.append( "apt_simple" );
-        // airports.load( inpath.c_str() );
-
-        // SGPath outpath( globals->get_fg_root() );
-        // outpath.append( "Airports" );
-        // outpath.append( "simple.gdbm" );
-        // airports.dump_gdbm( outpath.c_str() );
-
-        if ( ! runways.search( id, &r ) ) {
+		
+        if ( ! globals->get_runways()->search( id, (int)tgt_hdg, &r ) ) {
             SG_LOG( SG_GENERAL, SG_ALERT,
-                    "Failed to find " << id << " in database." );
+                    "Failed to find a good runway for " << id << '\n' );
             return false;
+        }	
+    } else {
+        return false;
+    }
+
+    double lat2, lon2, az2;
+    double heading = r.heading;
+    double azimuth = heading + 180.0;
+    while ( azimuth >= 360.0 ) { azimuth -= 360.0; }
+
+    SG_LOG( SG_GENERAL, SG_INFO,
+            "runway =  " << r.lon << ", " << r.lat
+            << " length = " << r.length * SG_FEET_TO_METER 
+            << " heading = " << azimuth );
+	    
+    geo_direct_wgs_84 ( 0, r.lat, r.lon, azimuth, 
+                        r.length * SG_FEET_TO_METER * 0.5 - 5.0,
+                        &lat2, &lon2, &az2 );
+
+    if ( fabs( fgGetDouble("/sim/presets/offset-distance") ) > SG_EPSILON ) {
+        double olat, olon;
+        double odist = fgGetDouble("/sim/presets/offset-distance");
+        odist *= SG_NM_TO_METER;
+        double oaz = azimuth;
+        if ( fabs(fgGetDouble("/sim/presets/offset-azimuth")) > SG_EPSILON ) {
+            oaz = fgGetDouble("/sim/presets/offset-azimuth") + 180;
+            heading = tgt_hdg;
         }
+        while ( oaz >= 360.0 ) { oaz -= 360.0; }
+        geo_direct_wgs_84 ( 0, lat2, lon2, oaz, odist, &olat, &olon, &az2 );
+        lat2=olat;
+        lon2=olon;
+    }
 
-        double diff;
-        double min_diff = 360.0;
-
-        while ( r.id == id ) {
-            // forward direction
-            diff = tgt_hdg - r.heading;
-            while ( diff < -180.0 ) { diff += 360.0; }
-            while ( diff >  180.0 ) { diff -= 360.0; }
-            diff = fabs(diff);
-            SG_LOG( SG_GENERAL, SG_INFO,
-                    "Runway " << r.rwy_no << " heading = " << r.heading <<
-                    " diff = " << diff );
-            if ( diff < min_diff ) {
-                min_diff = diff;
-                found_r = r;
-                found_dir = 0;
-            }
+    // presets
+    fgSetDouble("/sim/presets/longitude-deg",  lon2 );
+    fgSetDouble("/sim/presets/latitude-deg",  lat2 );
+    fgSetDouble("/sim/presets/heading-deg", heading );
 
-            // reverse direction
-            diff = tgt_hdg - r.heading - 180.0;
-            while ( diff < -180.0 ) { diff += 360.0; }
-            while ( diff >  180.0 ) { diff -= 360.0; }
-            diff = fabs(diff);
-            SG_LOG( SG_GENERAL, SG_INFO,
-                    "Runway -" << r.rwy_no << " heading = " <<
-                    r.heading + 180.0 <<
-                    " diff = " << diff );
-            if ( diff < min_diff ) {
-                min_diff = diff;
-                found_r = r;
-                found_dir = 180.0;
-            }
+    // other code depends on the actual values being set ...
+    fgSetDouble("/position/longitude-deg",  lon2 );
+    fgSetDouble("/position/latitude-deg",  lat2 );
+    fgSetDouble("/orientation/heading-deg", heading );
+
+    SG_LOG( SG_GENERAL, SG_INFO,
+            "Position for " << id << " is ("
+            << lon2 << ", "
+            << lat2 << ") new heading is "
+            << heading );
+	    
+    return true;
+}
 
-            runways.next( &r );
-        }
 
-        SG_LOG( SG_GENERAL, SG_INFO, "closest runway = " << found_r.rwy_no
-                << " + " << found_dir );
+// Set current_options lon/lat given an airport id and runway number
+static bool fgSetPosFromAirportIDandRwy( const string& id, const string& rwy ) {
+    FGRunway r;
+
+    if ( id.length() ) {
+        // set initial position from airport and runway number
 
+        SG_LOG( SG_GENERAL, SG_INFO,
+                "Attempting to set starting position for "
+                << id << ":" << rwy );
+
+        if ( ! globals->get_runways()->search( id, rwy, &r ) ) {
+            SG_LOG( SG_GENERAL, SG_ALERT,
+                    "Failed to find runway " << rwy << 
+                    " at airport " << id );
+            return false;
+        }
     } else {
-	return false;
+        return false;
     }
 
-    double heading = found_r.heading + found_dir;
-    while ( heading >= 360.0 ) { heading -= 360.0; }
-
     double lat2, lon2, az2;
-    double azimuth = found_r.heading + found_dir + 180.0;
+    double heading = r.heading;
+    double azimuth = heading + 180.0;
     while ( azimuth >= 360.0 ) { azimuth -= 360.0; }
-
+    
     SG_LOG( SG_GENERAL, SG_INFO,
-	    "runway =  " << found_r.lon << ", " << found_r.lat
-	    << " length = " << found_r.length * SG_FEET_TO_METER * 0.5 
-	    << " heading = " << azimuth );
+    "runway =  " << r.lon << ", " << r.lat
+    << " length = " << r.length * SG_FEET_TO_METER 
+    << " heading = " << azimuth );
     
-    geo_direct_wgs_84 ( 0, found_r.lat, found_r.lon, 
-			azimuth, found_r.length * SG_FEET_TO_METER * 0.5 - 5.0,
-			&lat2, &lon2, &az2 );
-
-    if ( fabs( fgGetDouble("/sim/startup/offset-distance") ) > SG_EPSILON ) {
+    geo_direct_wgs_84 ( 0, r.lat, r.lon, 
+    azimuth,
+    r.length * SG_FEET_TO_METER * 0.5 - 5.0,
+    &lat2, &lon2, &az2 );
+    
+    if ( fabs( fgGetDouble("/sim/presets/offset-distance") ) > SG_EPSILON )
+    {
 	double olat, olon;
-	double odist = fgGetDouble("/sim/startup/offset-distance");
+	double odist = fgGetDouble("/sim/presets/offset-distance");
 	odist *= SG_NM_TO_METER;
 	double oaz = azimuth;
-	if ( fabs(fgGetDouble("/sim/startup/offset-azimuth")) > SG_EPSILON ) {
-	    oaz = fgGetDouble("/sim/startup/offset-azimuth") + 180;
+	if ( fabs(fgGetDouble("/sim/presets/offset-azimuth")) > SG_EPSILON )
+	{
+	    oaz = fgGetDouble("/sim/presets/offset-azimuth") + 180;
+            heading = fgGetDouble("/sim/presets/heading-deg");
 	}
 	while ( oaz >= 360.0 ) { oaz -= 360.0; }
 	geo_direct_wgs_84 ( 0, lat2, lon2, oaz, odist, &olat, &olon, &az2 );
 	lat2=olat;
 	lon2=olon;
     }
-	
+    
+    // presets
+    fgSetDouble("/sim/presets/longitude-deg",  lon2 );
+    fgSetDouble("/sim/presets/latitude-deg",  lat2 );
+    fgSetDouble("/sim/presets/heading-deg", heading );
+    
+    // other code depends on the actual values being set ...
     fgSetDouble("/position/longitude-deg",  lon2 );
     fgSetDouble("/position/latitude-deg",  lat2 );
     fgSetDouble("/orientation/heading-deg", heading );
-
+    
     SG_LOG( SG_GENERAL, SG_INFO,
-	    "Position for " << id << " is ("
-	    << lon2 << ", "
-	    << lat2 << ") new heading is "
-	    << heading );
-
+    "Position for " << id << " is ("
+    << lon2 << ", "
+    << lat2 << ") new heading is "
+    << heading );
+    
     return true;
 }
 
 
-void fgSetPosFromGlideSlope(void) {
-    double gs = fgGetDouble("/velocities/glideslope");
-    double od = fgGetDouble("/sim/startup/offset-distance");
-    double alt = fgGetDouble("/position/altitude-ft");
-    
-    //if glideslope and offset-distance are set and altitude is
-    //not, calculate the initial altitude
+static void fgSetDistOrAltFromGlideSlope() {
+    string apt_id = fgGetString("/sim/presets/airport-id");
+    double gs = fgGetDouble("/sim/presets/glideslope-deg")
+        * SG_DEGREES_TO_RADIANS ;
+    double od = fgGetDouble("/sim/presets/offset-distance");
+    double alt = fgGetDouble("/sim/presets/altitude-ft");
+
+    double apt_elev = 0.0;
+    if ( ! apt_id.empty() ) {
+        apt_elev = fgGetAirportElev( apt_id );
+        if ( apt_elev < -9990.0 ) {
+            apt_elev = 0.0;
+        }
+    } else {
+        apt_elev = 0.0;
+    }
+
     if( fabs(gs) > 0.01 && fabs(od) > 0.1 && alt < -9990 ) {
-    	od *= SG_NM_TO_METER * SG_METER_TO_FEET;
-	alt = fabs(od*tan(gs));
-	fgSetDouble("/position/altitude-ft",alt);
-	fgSetBool("/sim/startup/onground", false);
-	SG_LOG(SG_GENERAL,SG_INFO, "Calculated altitude as: " << alt  << " ft");
+        // set altitude from glideslope and offset-distance
+        od *= SG_NM_TO_METER * SG_METER_TO_FEET;
+        alt = fabs(od*tan(gs)) + apt_elev;
+        fgSetDouble("/sim/presets/altitude-ft", alt);
+        fgSetBool("/sim/presets/onground", false);
+        SG_LOG( SG_GENERAL, SG_INFO, "Calculated altitude as: "
+                << alt  << " ft" );
     } else if( fabs(gs) > 0.01 && alt > 0 && fabs(od) < 0.1) {
-    	od  = alt/tan(gs);
-	od *= -1*SG_FEET_TO_METER * SG_METER_TO_NM;
-	fgSetDouble("/sim/startup/offset-distance",od);
-	SG_LOG(SG_GENERAL,SG_INFO, "Calculated offset distance as: " 
-	                               << od  << " nm");
+        // set offset-distance from glideslope and altitude
+        od  = (alt - apt_elev) / tan(gs);
+        od *= -1*SG_FEET_TO_METER * SG_METER_TO_NM;
+        fgSetDouble("/sim/presets/offset-distance", od);
+        fgSetBool("/sim/presets/onground", false);
+        SG_LOG( SG_GENERAL, SG_INFO, "Calculated offset distance as: " 
+                << od  << " nm" );
     } else if( fabs(gs) > 0.01 ) {
-    	SG_LOG(SG_GENERAL,SG_ALERT, "Glideslope given but not altitude" 
-	                          << " or offset-distance.  Resetting"
-				  << " glideslope to zero" );
-        fgSetDouble("/velocities/glideslope",0);				  
-    }				   
-	                              
-}    			
+        SG_LOG( SG_GENERAL, SG_ALERT,
+                "Glideslope given but not altitude or offset-distance." );
+        SG_LOG( SG_GENERAL, SG_ALERT, "Resetting glideslope to zero" );
+        fgSetDouble("/sim/presets/glideslope-deg", 0);
+        fgSetBool("/sim/presets/onground", true);
+    }                              
+}                       
+
+
+// Set current_options lon/lat given an airport id and heading (degrees)
+static bool fgSetPosFromNAV( const string& id, const double& freq ) {
+    FGNav *nav = current_navlist->findByIdentAndFreq( id.c_str(), freq );
+
+    // set initial position from runway and heading
+    if ( nav != NULL ) {
+        SG_LOG( SG_GENERAL, SG_INFO, "Attempting to set starting position for "
+                << id << ":" << freq );
+
+        double lon = nav->get_lon();
+        double lat = nav->get_lat();
+
+        if ( fabs( fgGetDouble("/sim/presets/offset-distance") ) > SG_EPSILON )
+        {
+            double odist = fgGetDouble("/sim/presets/offset-distance")
+                * SG_NM_TO_METER;
+            double oaz = fabs(fgGetDouble("/sim/presets/offset-azimuth"))
+                + 180.0;
+            while ( oaz >= 360.0 ) { oaz -= 360.0; }
+            double olat, olon, az2;
+            geo_direct_wgs_84 ( 0, lat, lon, oaz, odist, &olat, &olon, &az2 );
+
+            lat = olat;
+            lon = olon;
+        }
+
+        // presets
+        fgSetDouble("/sim/presets/longitude-deg",  lon );
+        fgSetDouble("/sim/presets/latitude-deg",  lat );
+
+        // other code depends on the actual values being set ...
+        fgSetDouble("/position/longitude-deg",  lon );
+        fgSetDouble("/position/latitude-deg",  lat );
+        fgSetDouble("/orientation/heading-deg", 
+                    fgGetDouble("/sim/presets/heading-deg") );
+
+        SG_LOG( SG_GENERAL, SG_INFO,
+                "Position for " << id << ":" << freq << " is ("
+                << lon << ", "<< lat << ")" );
+
+        return true;
+    } else {
+        SG_LOG( SG_GENERAL, SG_ALERT, "Failed to locate NAV = "
+                << id << ":" << freq );
+        return false;
+    }
+}
+
+
+// Set current_options lon/lat given an airport id and heading (degrees)
+static bool fgSetPosFromFix( const string& id ) {
+    FGFix fix;
+
+    // set initial position from runway and heading
+    if ( current_fixlist->query( id.c_str(), &fix ) ) {
+        SG_LOG( SG_GENERAL, SG_INFO, "Attempting to set starting position for "
+                << id );
+
+        double lon = fix.get_lon();
+        double lat = fix.get_lat();
+
+        if ( fabs( fgGetDouble("/sim/presets/offset-distance") ) > SG_EPSILON )
+        {
+            double odist = fgGetDouble("/sim/presets/offset-distance")
+                * SG_NM_TO_METER;
+            double oaz = fabs(fgGetDouble("/sim/presets/offset-azimuth"))
+                + 180.0;
+            while ( oaz >= 360.0 ) { oaz -= 360.0; }
+            double olat, olon, az2;
+            geo_direct_wgs_84 ( 0, lat, lon, oaz, odist, &olat, &olon, &az2 );
+
+            lat = olat;
+            lon = olon;
+        }
+
+        // presets
+        fgSetDouble("/sim/presets/longitude-deg",  lon );
+        fgSetDouble("/sim/presets/latitude-deg",  lat );
+
+        // other code depends on the actual values being set ...
+        fgSetDouble("/position/longitude-deg",  lon );
+        fgSetDouble("/position/latitude-deg",  lat );
+        fgSetDouble("/orientation/heading-deg", 
+                    fgGetDouble("/sim/presets/heading-deg") );
+
+        SG_LOG( SG_GENERAL, SG_INFO,
+                "Position for " << id << " is ("
+                << lon << ", "<< lat << ")" );
+
+        return true;
+    } else {
+        SG_LOG( SG_GENERAL, SG_ALERT, "Failed to locate NAV = "
+                << id );
+        return false;
+    }
+}
+
+
+/**
+ * Initialize vor/ndb/ils/fix list management and query systems (as
+ * well as simple airport db list)
+ */
+bool
+fgInitNav ()
+{
+    SG_LOG(SG_GENERAL, SG_INFO, "Loading Simple Airport List");
+    SGPath p_simple( globals->get_fg_root() );
+    p_simple.append( "Airports/basic.dat" );
+    FGAirportList *airports = new FGAirportList( p_simple.str() );
+    globals->set_airports( airports );
+
+    SG_LOG(SG_GENERAL, SG_INFO, "Loading Runway List");
+    SGPath p_runway( globals->get_fg_root() );
+    p_runway.append( "Airports/runways.dat" );
+    FGRunwayList *runways = new FGRunwayList( p_runway.str() );
+    globals->set_runways( runways );
+
+    SG_LOG(SG_GENERAL, SG_INFO, "Loading Navaids");
+
+    SG_LOG(SG_GENERAL, SG_INFO, "  VOR/NDB");
+    current_navlist = new FGNavList;
+    SGPath p_nav( globals->get_fg_root() );
+    p_nav.append( "Navaids/default.nav" );
+    current_navlist->init( p_nav );
+
+    SG_LOG(SG_GENERAL, SG_INFO, "  ILS and Marker Beacons");
+    current_beacons = new FGMarkerBeacons;
+    current_beacons->init();
+    current_ilslist = new FGILSList;
+    SGPath p_ils( globals->get_fg_root() );
+    p_ils.append( "Navaids/default.ils" );
+    current_ilslist->init( p_ils );
+
+    SG_LOG(SG_GENERAL, SG_INFO, "  Fixes");
+    current_fixlist = new FGFixList;
+    SGPath p_fix( globals->get_fg_root() );
+    p_fix.append( "Navaids/default.fix" );
+    current_fixlist->init( p_fix );
+
+    return true;
+}
+
+
+// Set the initial position based on presets (or defaults)
+bool fgInitPosition() {
+    bool set_pos = false;
+
+    // If glideslope is specified, then calculate offset-distance or
+    // altitude relative to glide slope if either of those was not
+    // specified.
+    if ( fgGetDouble("/sim/presets/glideslope-deg") > 0.1 ) {
+        fgSetDistOrAltFromGlideSlope();
+    }
+
+
+    // If we have an explicit, in-range lon/lat, don't change it, just use it.
+    // If not, check for an airport-id and use that.
+    // If not, default to the middle of the KSFO field.
+    // The default values for lon/lat are deliberately out of range
+    // so that the airport-id can take effect; valid lon/lat will
+    // override airport-id, however.
+    double lon_deg = fgGetDouble("/sim/presets/longitude-deg");
+    double lat_deg = fgGetDouble("/sim/presets/latitude-deg");
+    if ( lon_deg >= -180.0 && lon_deg <= 180.0
+         && lat_deg >= -90.0 && lat_deg <= 90.0 )
+    {
+        set_pos = true;
+    }
+
+    string apt = fgGetString("/sim/presets/airport-id");
+    string rwy_no = fgGetString("/sim/presets/runway");
+    double hdg = fgGetDouble("/sim/presets/heading-deg");
+    string vor = fgGetString("/sim/presets/vor-id");
+    double vor_freq = fgGetDouble("/sim/presets/vor-freq");
+    string ndb = fgGetString("/sim/presets/ndb-id");
+    double ndb_freq = fgGetDouble("/sim/presets/ndb-freq");
+    string fix = fgGetString("/sim/presets/fix");
+
+    if ( !set_pos && !apt.empty() && !rwy_no.empty() ) {
+        // An airport + runway is requested
+        if ( fgSetPosFromAirportIDandRwy( apt, rwy_no ) ) {
+            // set tower position (a little off the heading for single
+            // runway airports)
+            fgSetTowerPosFromAirportID( apt, hdg );
+            set_pos = true;
+        }
+    }
+
+    if ( !set_pos && !apt.empty() ) {
+        // An airport is requested (find runway closest to hdg)
+        if ( fgSetPosFromAirportIDandHdg( apt, hdg ) ) {
+            // set tower position (a little off the heading for single
+            // runway airports)
+            fgSetTowerPosFromAirportID( apt, hdg );
+            set_pos = true;
+        }
+    }
+
+    if ( !set_pos && !vor.empty() ) {
+        // a VOR is requested
+        if ( fgSetPosFromNAV( vor, vor_freq ) ) {
+            set_pos = true;
+        }
+    }
+
+    if ( !set_pos && !ndb.empty() ) {
+        // an NDB is requested
+        if ( fgSetPosFromNAV( ndb, ndb_freq ) ) {
+            set_pos = true;
+        }
+    }
+
+    if ( !set_pos && !fix.empty() ) {
+        // a Fix is requested
+        if ( fgSetPosFromFix( fix ) ) {
+            set_pos = true;
+        }
+    }
+
+    if ( !set_pos ) {
+        // No lon/lat specified, no airport specified, default to
+        // middle of KSFO field.
+        fgSetDouble("/sim/presets/longitude-deg", -122.374843);
+        fgSetDouble("/sim/presets/latitude-deg", 37.619002);
+    }
+
+    fgSetDouble( "/position/longitude-deg",
+                 fgGetDouble("/sim/presets/longitude-deg") );
+    fgSetDouble( "/position/latitude-deg",
+                 fgGetDouble("/sim/presets/latitude-deg") );
+    fgSetDouble( "/orientation/heading-deg",
+                 fgGetDouble("/sim/presets/heading-deg") );
+
+    return true;
+}
+
 
 // General house keeping initializations
-bool fgInitGeneral( void ) {
+bool fgInitGeneral() {
     string root;
 
 #if defined(FX) && defined(XMESA)
@@ -535,11 +1102,11 @@ bool fgInitGeneral( void ) {
 
     root = globals->get_fg_root();
     if ( ! root.length() ) {
-	// No root path set? Then bail ...
-	SG_LOG( SG_GENERAL, SG_ALERT,
-		"Cannot continue without a path to the base package "
-		<< "being defined." );
-	exit(-1);
+        // No root path set? Then bail ...
+        SG_LOG( SG_GENERAL, SG_ALERT,
+                "Cannot continue without a path to the base package "
+                << "being defined." );
+        exit(-1);
     }
     SG_LOG( SG_GENERAL, SG_INFO, "FG_ROOT = " << '"' << root << '"' << endl );
 
@@ -547,14 +1114,14 @@ bool fgInitGeneral( void ) {
     // initialize full screen flag
     globals->set_fullscreen(false);
     if ( strstr ( general.get_glRenderer(), "Glide" ) ) {
-	// Test for the MESA_GLX_FX env variable
-	if ( (mesa_win_state = getenv( "MESA_GLX_FX" )) != NULL) {
-	    // test if we are fullscreen mesa/glide
-	    if ( (mesa_win_state[0] == 'f') ||
-		 (mesa_win_state[0] == 'F') ) {
-	        globals->set_fullscreen(true);
-	    }
-	}
+        // Test for the MESA_GLX_FX env variable
+        if ( (mesa_win_state = getenv( "MESA_GLX_FX" )) != NULL) {
+            // test if we are fullscreen mesa/glide
+            if ( (mesa_win_state[0] == 'f') ||
+                 (mesa_win_state[0] == 'F') ) {
+                globals->set_fullscreen(true);
+            }
+        }
     }
 #endif
 
@@ -578,21 +1145,23 @@ void fgInitFDM() {
     const string &model = fgGetString("/sim/flight-model");
 
     try {
-	if ( model == "larcsim" ) {
-	    cur_fdm_state = new FGLaRCsim( dt );
-	} else if ( model == "jsb" ) {
-	    cur_fdm_state = new FGJSBsim( dt );
-	} else if ( model == "ada" ) {
-	    cur_fdm_state = new FGADA( dt );
-	} else if ( model == "balloon" ) {
-	    cur_fdm_state = new FGBalloonSim( dt );
-	} else if ( model == "magic" ) {
-	    cur_fdm_state = new FGMagicCarpet( dt );
-	} else if ( model == "ufo" ) {
-	    cur_fdm_state = new FGUFO( dt );
-	} else if ( model == "external" ) {
-	    cur_fdm_state = new FGExternal( dt );
-	} else if ( model.find("network") == 0 ) {
+        if ( model == "larcsim" ) {
+            cur_fdm_state = new FGLaRCsim( dt );
+        } else if ( model == "jsb" ) {
+            cur_fdm_state = new FGJSBsim( dt );
+        } else if ( model == "ada" ) {
+            cur_fdm_state = new FGADA( dt );
+        } else if ( model == "balloon" ) {
+            cur_fdm_state = new FGBalloonSim( dt );
+        } else if ( model == "magic" ) {
+            cur_fdm_state = new FGMagicCarpet( dt );
+        } else if ( model == "ufo" ) {
+            cur_fdm_state = new FGUFO( dt );
+        } else if ( model == "external" ) {
+            // external is a synonym for "--fdm=null" and is
+            // maintained here for backwards compatibility
+            cur_fdm_state = new FGNullFDM( dt );
+        } else if ( model.find("network") == 0 ) {
             string host = "localhost";
             int port1 = 5501;
             int port2 = 5502;
@@ -624,23 +1193,35 @@ void fgInitFDM() {
                 port3 = atoi( net_options.substr(begin, end - begin).c_str() );
                 begin = end + 1;
             }
-	    cur_fdm_state = new FGExternalNet( dt, host, port1, port2, port3 );
-	} else if ( model == "null" ) {
-	    cur_fdm_state = new FGNullFDM( dt );
-	} else if ( model == "yasim" ) {
-	    cur_fdm_state = new YASim( dt );
-	} else {
-	    SG_LOG(SG_GENERAL, SG_ALERT,
-		   "Unrecognized flight model '" << model
-		   << "', cannot init flight dynamics model.");
-	    exit(-1);
-	}
+            cur_fdm_state = new FGExternalNet( dt, host, port1, port2, port3 );
+        } else if ( model.find("pipe") == 0 ) {
+            string pipe_path = model.substr(5);
+            cur_fdm_state = new FGExternalPipe( dt, pipe_path );
+        } else if ( model == "null" ) {
+            cur_fdm_state = new FGNullFDM( dt );
+        } else if ( model == "yasim" ) {
+            cur_fdm_state = new YASim( dt );
+        } else {
+            SG_LOG(SG_GENERAL, SG_ALERT,
+                   "Unrecognized flight model '" << model
+                   << "', cannot init flight dynamics model.");
+            exit(-1);
+        }
     } catch ( ... ) {
-	SG_LOG(SG_GENERAL, SG_ALERT, "FlightGear aborting\n\n");
-	exit(-1);
+        SG_LOG(SG_GENERAL, SG_ALERT, "FlightGear aborting\n\n");
+        exit(-1);
     }
 }
 
+static void printMat(const sgVec4 *mat, char *name="")
+{
+    int i;
+    SG_LOG(SG_GENERAL, SG_BULK, name );
+    for(i=0; i<4; i++) {
+        SG_LOG(SG_GENERAL, SG_BULK, "  " << mat[i][0] << " " << mat[i][1]
+                                    << " " << mat[i][2] << " " << mat[i][3] );
+    }
+}
 
 // Initialize view parameters
 void fgInitView() {
@@ -648,17 +1229,22 @@ void fgInitView() {
   globals->get_aircraft_model()->update(0);
   // run update for current view so that data is current...
   globals->get_viewmgr()->update(0);
+
+  printMat(globals->get_current_view()->get_VIEW(),"VIEW");
+  printMat(globals->get_current_view()->get_UP(),"UP");
+  // printMat(globals->get_current_view()->get_LOCAL(),"LOCAL");
+  
 }
 
 
 SGTime *fgInitTime() {
     // Initialize time
     static const SGPropertyNode *longitude
-	= fgGetNode("/position/longitude-deg");
+        = fgGetNode("/position/longitude-deg");
     static const SGPropertyNode *latitude
-	= fgGetNode("/position/latitude-deg");
+        = fgGetNode("/position/latitude-deg");
     static const SGPropertyNode *cur_time_override
-	= fgGetNode("/sim/time/cur-time-override", true);
+        = fgGetNode("/sim/time/cur-time-override", true);
 
     SGPath zone( globals->get_fg_root() );
     zone.append( "Timezone" );
@@ -715,13 +1301,13 @@ SGTime *fgInitTime() {
 // initialization routines.  If you are adding a subsystem to flight
 // gear, its initialization call should located in this routine.
 // Returns non-zero if a problem encountered.
-bool fgInitSubsystems( void ) {
-    static const SGPropertyNode *longitude
-	= fgGetNode("/position/longitude-deg");
-    static const SGPropertyNode *latitude
-	= fgGetNode("/position/latitude-deg");
-    static const SGPropertyNode *altitude
-	= fgGetNode("/position/altitude-ft");
+bool fgInitSubsystems() {
+    // static const SGPropertyNode *longitude
+    //     = fgGetNode("/sim/presets/longitude-deg");
+    // static const SGPropertyNode *latitude
+    //     = fgGetNode("/sim/presets/latitude-deg");
+    // static const SGPropertyNode *altitude
+    //     = fgGetNode("/sim/presets/altitude-ft");
 
     fgLIGHT *l = &cur_light_params;
 
@@ -735,35 +1321,46 @@ bool fgInitSubsystems( void ) {
 
     SGPath mpath( globals->get_fg_root() );
     mpath.append( "materials.xml" );
-    if ( ! material_lib.load( mpath.str() ) ) {
-    	SG_LOG( SG_GENERAL, SG_ALERT, "Error loading material lib!" );
-	exit(-1);
+    if ( ! globals->get_matlib()->load(globals->get_fg_root(), mpath.str()) ) {
+        SG_LOG( SG_GENERAL, SG_ALERT, "Error loading material lib!" );
+        exit(-1);
     }
 
+    ////////////////////////////////////////////////////////////////////
+    // Initialize the event manager subsystem.
+    ////////////////////////////////////////////////////////////////////
+
+    global_events.init();
+
+    // Output event stats every 60 seconds
+    global_events.Register( "FGEventMgr::print_stats()",
+                            &global_events, &FGEventMgr::print_stats,
+                            60000 );
+
 
     ////////////////////////////////////////////////////////////////////
     // Initialize the scenery management subsystem.
     ////////////////////////////////////////////////////////////////////
 
-    globals->set_scenery( new FGScenery );
-    globals->get_scenery()->init();
-    globals->get_scenery()->bind();
-
-    if ( global_tile_mgr.init() ) {
-	// Load the local scenery data
-	double visibility_meters = fgGetDouble("/environment/visibility-m");
-		
-	global_tile_mgr.update( longitude->getDoubleValue(),
-				latitude->getDoubleValue(),
-				visibility_meters );
+    if ( globals->get_tile_mgr()->init() ) {
+        // Load the local scenery data
+        double visibility_meters = fgGetDouble("/environment/visibility-m");
+                
+        globals->get_tile_mgr()->update( visibility_meters );
     } else {
-    	SG_LOG( SG_GENERAL, SG_ALERT, "Error in Tile Manager initialization!" );
-	exit(-1);
+        SG_LOG( SG_GENERAL, SG_ALERT, "Error in Tile Manager initialization!" );
+        exit(-1);
     }
 
+    // cause refresh of viewer scenery timestamps every 15 seconds...
+    global_events.Register( "FGTileMgr::refresh_view_timestamps()",
+                            globals->get_tile_mgr(),
+                            &FGTileMgr::refresh_view_timestamps,
+                            15000 );
+
     SG_LOG( SG_GENERAL, SG_DEBUG,
-    	    "Current terrain elevation after tile mgr init " <<
-	    globals->get_scenery()->get_cur_elev() );
+            "Current terrain elevation after tile mgr init " <<
+            globals->get_scenery()->get_cur_elev() );
 
 
     ////////////////////////////////////////////////////////////////////
@@ -771,7 +1368,7 @@ bool fgInitSubsystems( void ) {
     ////////////////////////////////////////////////////////////////////
 
     fgInitFDM();
-	
+        
     // allocates structures so must happen before any of the flight
     // model or control parameters are set
     fgAircraftInit();   // In the future this might not be the case.
@@ -784,18 +1381,6 @@ bool fgInitSubsystems( void ) {
     fgInitView();
 
 
-    ////////////////////////////////////////////////////////////////////
-    // Initialize the event manager subsystem.
-    ////////////////////////////////////////////////////////////////////
-
-    global_events.init();
-
-    // Output event stats every 60 seconds
-    global_events.Register( "FGEventMgr::print_stats()",
-			    &global_events, &FGEventMgr::print_stats,
-			    60000 );
-
-
     ////////////////////////////////////////////////////////////////////
     // Initialize the lighting subsystem.
     ////////////////////////////////////////////////////////////////////
@@ -806,9 +1391,9 @@ bool fgInitSubsystems( void ) {
     fgUpdateSunPos();
     fgUpdateMoonPos();
     global_events.Register( "fgUpdateSunPos()", &fgUpdateSunPos,
-			    60000);
+                            60000);
     global_events.Register( "fgUpdateMoonPos()", &fgUpdateMoonPos,
-			    60000);
+                            60000);
 
     // Initialize Lighting interpolation tables
     l->Init();
@@ -817,17 +1402,31 @@ bool fgInitSubsystems( void ) {
     l->Update();
     // update the lighting parameters (based on sun angle)
     global_events.Register( "fgLight::Update()",
-			    &cur_light_params, &fgLIGHT::Update,
-			    30000 );
+                            &cur_light_params, &fgLIGHT::Update,
+                            30000 );
 
 
     ////////////////////////////////////////////////////////////////////
-    // Initialize the logger.
+    // Create and register the logger.
     ////////////////////////////////////////////////////////////////////
     
-    globals->set_logger(new FGLogger);
-    globals->get_logger()->init();
-    globals->get_logger()->bind();
+    globals->add_subsystem("logger", new FGLogger);
+
+
+#if defined(HAVE_PLIB_PSL)
+    ////////////////////////////////////////////////////////////////////
+    // Create and register the script manager.
+    ////////////////////////////////////////////////////////////////////
+
+    globals->add_subsystem("scripting", new FGScriptMgr);
+#endif // HAVE_PLIB_PSL
+
+
+    ////////////////////////////////////////////////////////////////////
+    // Create and register the XML GUI.
+    ////////////////////////////////////////////////////////////////////
+
+    globals->add_subsystem("gui", new NewGUI, FGSubsystemMgr::INIT);
 
 
     ////////////////////////////////////////////////////////////////////
@@ -836,7 +1435,7 @@ bool fgInitSubsystems( void ) {
 
     // update the current timezone each 30 minutes
     global_events.Register( "fgUpdateLocalTime()", &fgUpdateLocalTime,
-			    30*60*1000 );
+                            30*60*1000 );
 
 
     ////////////////////////////////////////////////////////////////////
@@ -849,8 +1448,8 @@ bool fgInitSubsystems( void ) {
     SG_LOG(SG_GENERAL, SG_INFO, "Creating LocalWeatherDatabase");
     sgVec3 position;
     sgSetVec3( position, current_aircraft.fdm_state->get_Latitude(),
-	       current_aircraft.fdm_state->get_Longitude(),
-	       current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER );
+               current_aircraft.fdm_state->get_Longitude(),
+               current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER );
     double init_vis = fgGetDouble("/environment/visibility-m");
 
     FGLocalWeatherDatabase::DatabaseWorkingType working_type;
@@ -864,14 +1463,14 @@ bool fgInitSubsystems( void ) {
     
     if ( init_vis > 0 ) {
       FGLocalWeatherDatabase::theFGLocalWeatherDatabase = 
-	new FGLocalWeatherDatabase( position,
-				    globals->get_fg_root(),
+        new FGLocalWeatherDatabase( position,
+                                    globals->get_fg_root(),
                                     working_type,
                                     init_vis );
     } else {
       FGLocalWeatherDatabase::theFGLocalWeatherDatabase = 
-	new FGLocalWeatherDatabase( position,
-				    globals->get_fg_root(),
+        new FGLocalWeatherDatabase( position,
+                                    globals->get_fg_root(),
                                     working_type );
     }
 
@@ -885,57 +1484,42 @@ bool fgInitSubsystems( void ) {
     global_events.Register( "weather update", &fgUpdateWeatherDatabase,
                             30000);
 #else
-    globals->get_environment_mgr()->init();
-    globals->get_environment_mgr()->bind();
+    globals->add_subsystem("environment", new FGEnvironmentMgr);
 #endif
 
+#ifdef FG_USE_CLOUDS_3D
     ////////////////////////////////////////////////////////////////////
-    // Initialize vor/ndb/ils/fix list management and query systems
-    ////////////////////////////////////////////////////////////////////
-
-    SG_LOG(SG_GENERAL, SG_INFO, "Loading Navaids");
-
-    SG_LOG(SG_GENERAL, SG_INFO, "  VOR/NDB");
-    current_navlist = new FGNavList;
-    SGPath p_nav( globals->get_fg_root() );
-    p_nav.append( "Navaids/default.nav" );
-    current_navlist->init( p_nav );
-
-    SG_LOG(SG_GENERAL, SG_INFO, "  ILS and Marker Beacons");
-    current_beacons = new FGMarkerBeacons;
-    current_beacons->init();
-    current_ilslist = new FGILSList;
-    SGPath p_ils( globals->get_fg_root() );
-    p_ils.append( "Navaids/default.ils" );
-    current_ilslist->init( p_ils );
-
-    SG_LOG(SG_GENERAL, SG_INFO, "  Fixes");
-    current_fixlist = new FGFixList;
-    SGPath p_fix( globals->get_fg_root() );
-    p_fix.append( "Navaids/default.fix" );
-    current_fixlist->init( p_fix );
-
-    ////////////////////////////////////////////////////////////////////
-    // Initialize ATC list management and query systems
+    // Initialize the 3D cloud subsystem.
     ////////////////////////////////////////////////////////////////////
-
-    SG_LOG(SG_GENERAL, SG_INFO, "  ATIS");
-    current_atislist = new FGATISList;
-    SGPath p_atis( globals->get_fg_root() );
-    p_atis.append( "ATC/default.atis" );
-    current_atislist->init( p_atis );
-
-    SG_LOG(SG_GENERAL, SG_INFO, "  Tower");
-    current_towerlist = new FGTowerList;
-    SGPath p_tower( globals->get_fg_root() );
-    p_tower.append( "ATC/default.tower" );
-    current_towerlist->init( p_tower );
-
-    SG_LOG(SG_GENERAL, SG_INFO, "  Approach");
-    current_approachlist = new FGApproachList;
-    SGPath p_approach( globals->get_fg_root() );
-    p_approach.append( "ATC/default.approach" );
-    current_approachlist->init( p_approach );
+    if ( fgGetBool("/sim/rendering/clouds3d") ) {
+        static const SGPropertyNode *longitude
+           = fgGetNode("/sim/presets/longitude-deg");
+        static const SGPropertyNode *latitude
+           = fgGetNode("/sim/presets/latitude-deg");
+        static const SGPropertyNode *altitude
+           = fgGetNode("/sim/presets/altitude-ft");
+
+        SGPath cloud_path(globals->get_fg_root());
+#if 0
+        cloud_path.append("Textures/Sky/scattered.rgba");
+        SG_LOG(SG_GENERAL, SG_INFO, "Loading CLOUDS3d from: " << cloud_path.c_str());
+
+        SGTexture tx;
+        tx.read_rgba_texture(cloud_path.c_str());
+        if ( !sgCloud3d->Load( tx.texture(), tx.width(),
+#else
+        cloud_path.append("large.sky");
+        if ( !sgCloud3d->Load( cloud_path.str(),
+#endif
+                               latitude->getDoubleValue(),
+                               longitude->getDoubleValue()) )
+        {
+            fgSetBool("/sim/rendering/clouds3d", false);
+            SG_LOG(SG_GENERAL, SG_INFO, "CLOUDS3d FAILED: ");
+        }
+        SG_LOG(SG_GENERAL, SG_INFO, "CLOUDS3d Loaded: ");
+    }
+#endif
 
     ////////////////////////////////////////////////////////////////////
     // Initialise ATC display system
@@ -958,13 +1542,8 @@ bool fgInitSubsystems( void ) {
     ////////////////////////////////////////////////////////////////////
 
     SG_LOG(SG_GENERAL, SG_INFO, "  AI Manager");
-    // globals->set_AI_mgr(new FGAIMgr);
-    // globals->get_AI_mgr()->init();     
-
-    ////////////////////////////////////////////////////////////////////
-    // Initialize the built-in commands.
-    ////////////////////////////////////////////////////////////////////
-    fgInitCommands();
+    globals->set_AI_mgr(new FGAIMgr);
+    globals->get_AI_mgr()->init();
 
 
 #ifdef ENABLE_AUDIO_SUPPORT
@@ -972,7 +1551,7 @@ bool fgInitSubsystems( void ) {
     // Initialize the sound subsystem.
     ////////////////////////////////////////////////////////////////////
 
-    globals->set_soundmgr(new FGSoundMgr);
+    globals->set_soundmgr(new SGSoundMgr);
     globals->get_soundmgr()->init();
     globals->get_soundmgr()->bind();
 
@@ -980,18 +1559,18 @@ bool fgInitSubsystems( void ) {
     ////////////////////////////////////////////////////////////////////
     // Initialize the sound-effects subsystem.
     ////////////////////////////////////////////////////////////////////
-    globals->set_fx(new FGFX);
-    globals->get_fx()->init();
-    globals->get_fx()->bind();
 
+    globals->add_subsystem("fx", new FGFX);
+    
 #endif
 
+    globals->add_subsystem("instrumentation", new FGInstrumentMgr);
+    globals->add_subsystem("systems", new FGSystemMgr);
+
     ////////////////////////////////////////////////////////////////////
     // Initialize the radio stack subsystem.
     ////////////////////////////////////////////////////////////////////
 
-				// A textbook example of how FGSubsystem
-				// should work...
     current_radiostack = new FGRadioStack;
     current_radiostack->init();
     current_radiostack->bind();
@@ -1002,10 +1581,10 @@ bool fgInitSubsystems( void ) {
     ////////////////////////////////////////////////////////////////////
 
     if( fgCockpitInit( &current_aircraft )) {
-	// Cockpit initialized ok.
+        // Cockpit initialized ok.
     } else {
-    	SG_LOG( SG_GENERAL, SG_ALERT, "Error in Cockpit initialization!" );
-	exit(-1);
+        SG_LOG( SG_GENERAL, SG_ALERT, "Error in Cockpit initialization!" );
+        exit(-1);
     }
 
 
@@ -1017,8 +1596,8 @@ bool fgInitSubsystems( void ) {
     globals->get_autopilot()->init();
     globals->get_autopilot()->bind();
 
-				// FIXME: these should go in the
-				// GUI initialization code, not here.
+                                // FIXME: these should go in the
+                                // GUI initialization code, not here.
     fgAPAdjustInit();
     NewTgtAirportInit();
     NewHeadingInit();
@@ -1028,21 +1607,25 @@ bool fgInitSubsystems( void ) {
     // Initialize I/O subsystem.
     ////////////////////////////////////////////////////////////////////
 
-#if ! defined( macintosh )
-    fgIOInit();
-#endif
+    globals->get_io()->init();
+    globals->get_io()->bind();
+
+
+    ////////////////////////////////////////////////////////////////////
+    // Add a new 2D panel.
+    ////////////////////////////////////////////////////////////////////
 
-    // Initialize the 2D panel.
     string panel_path = fgGetString("/sim/panel/path",
-				    "Panels/Default/default.xml");
-    current_panel = fgReadPanel(panel_path);
-    if (current_panel == 0) {
-	SG_LOG( SG_INPUT, SG_ALERT, 
-		"Error reading new panel from " << panel_path );
+                                    "Panels/Default/default.xml");
+
+    globals->set_current_panel( fgReadPanel(panel_path) );
+    if (globals->get_current_panel() == 0) {
+        SG_LOG( SG_INPUT, SG_ALERT, 
+                "Error reading new panel from " << panel_path );
     } else {
-	SG_LOG( SG_INPUT, SG_INFO, "Loaded new panel from " << panel_path );
-	current_panel->init();
-	current_panel->bind();
+        SG_LOG( SG_INPUT, SG_INFO, "Loaded new panel from " << panel_path );
+        globals->get_current_panel()->init();
+        globals->get_current_panel()->bind();
     }
 
     
@@ -1065,56 +1648,77 @@ bool fgInitSubsystems( void ) {
     // Initialize the input subsystem.
     ////////////////////////////////////////////////////////////////////
 
-    current_input.init();
-    current_input.bind();
+    globals->add_subsystem("input", new FGInput);
 
 
+    ////////////////////////////////////////////////////////////////////
+    // Initialize the replay subsystem
+    ////////////////////////////////////////////////////////////////////
+    globals->add_subsystem("replay", new FGReplay);
+
+    ////////////////////////////////////////////////////////////////////
+    // Bind and initialize subsystems.
+    ////////////////////////////////////////////////////////////////////
+
+    globals->get_subsystem_mgr()->bind();
+    globals->get_subsystem_mgr()->init();
+
+
+#ifdef FG_MPLAYER_AS
+    ////////////////////////////////////////////////////////////////////
+    // Initialize multiplayer subsystem
+    ////////////////////////////////////////////////////////////////////
+
+    globals->set_multiplayer_tx_mgr(new FGMultiplayTxMgr);
+    globals->get_multiplayer_tx_mgr()->init();
+
+    globals->set_multiplayer_rx_mgr(new FGMultiplayRxMgr);
+    globals->get_multiplayer_rx_mgr()->init();
+#endif
+
     ////////////////////////////////////////////////////////////////////////
     // End of subsystem initialization.
     ////////////////////////////////////////////////////////////////////
 
     SG_LOG( SG_GENERAL, SG_INFO, endl);
 
-				// Save the initial state for future
-				// reference.
+                                // Save the initial state for future
+                                // reference.
     globals->saveInitialState();
 
     return true;
 }
 
 
-void fgReInitSubsystems( void )
+void fgReInitSubsystems()
 {
-    static const SGPropertyNode *longitude
-	= fgGetNode("/position/longitude-deg");
-    static const SGPropertyNode *latitude
-	= fgGetNode("/position/latitude-deg");
+    // static const SGPropertyNode *longitude
+    //     = fgGetNode("/sim/presets/longitude-deg");
+    // static const SGPropertyNode *latitude
+    //     = fgGetNode("/sim/presets/latitude-deg");
     static const SGPropertyNode *altitude
-	= fgGetNode("/position/altitude-ft");
+        = fgGetNode("/sim/presets/altitude-ft");
     static const SGPropertyNode *master_freeze
-	= fgGetNode("/sim/freeze/master");
+        = fgGetNode("/sim/freeze/master");
 
     SG_LOG( SG_GENERAL, SG_INFO,
-	    "/position/altitude = " << altitude->getDoubleValue() );
+            "fgReInitSubsystems(): /position/altitude = "
+            << altitude->getDoubleValue() );
 
     bool freeze = master_freeze->getBoolValue();
     if ( !freeze ) {
-	fgSetBool("/sim/freeze/master", true);
+        fgSetBool("/sim/freeze/master", true);
     }
-    
-    // Initialize the Scenery Management subsystem
-    // FIXME, what really needs to get initialized here, at the time
-    // this was commented out, scenery.init() was a noop
-    // scenery.init();
 
+    // Initialize the FDM
     fgInitFDM();
     
     // allocates structures so must happen before any of the flight
     // model or control parameters are set
     fgAircraftInit();   // In the future this might not be the case.
 
-    // copy viewer settings into current-view path
-    globals->get_viewmgr()->copyToCurrent();
+    // reload offsets from config defaults
+    globals->get_viewmgr()->reinit();
 
     fgInitView();
 
@@ -1127,7 +1731,7 @@ void fgReInitSubsystems( void )
     fgUpdateLocalTime();
 
     if ( !freeze ) {
-	fgSetBool("/sim/freeze/master", false);
+        fgSetBool("/sim/freeze/master", false);
     }
 }