X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FMain%2Ffg_commands.cxx;h=de4336833a344159e85801549e415fe0cf77dfca;hb=4fe615fff546df5e381f7fc9ddae92dd3dc36251;hp=cda99467a80d063a1d7117195e6674500fae41f8;hpb=7543355d1768215bdd241972d9be579f20c52b10;p=flightgear.git

diff --git a/src/Main/fg_commands.cxx b/src/Main/fg_commands.cxx
index cda99467a..de4336833 100644
--- a/src/Main/fg_commands.cxx
+++ b/src/Main/fg_commands.cxx
@@ -1,43 +1,55 @@
 // fg_commands.cxx - internal FGFS commands.
 
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
 #include <string.h>		// strcmp()
 
 #include <simgear/compiler.h>
-#include <simgear/misc/exception.hxx>
 
 #include STL_STRING
 #include STL_FSTREAM
 
+#include <simgear/sg_inlines.h>
 #include <simgear/debug/logstream.hxx>
 #include <simgear/math/sg_random.h>
-#include <simgear/misc/commands.hxx>
-#include <simgear/misc/props.hxx>
-#include <simgear/sg_inlines.h>
+#include <simgear/structure/exception.hxx>
+#include <simgear/structure/commands.hxx>
+#include <simgear/props/props.hxx>
 
 #include <Cockpit/panel.hxx>
 #include <Cockpit/panel_io.hxx>
+#include <Cockpit/hud.hxx>
+#include <Environment/environment.hxx>
 #include <FDM/flight.hxx>
 #include <GUI/gui.h>
 #include <GUI/new_gui.hxx>
 #include <GUI/dialog.hxx>
+#include <Aircraft/replay.hxx>
 #include <Scenery/tilemgr.hxx>
+#include <Scenery/scenery.hxx>
 #if defined(HAVE_PLIB_PSL)
-#include <Scripting/scriptmgr.hxx>
+#  include <Scripting/scriptmgr.hxx>
 #endif
+#include <Scripting/NasalSys.hxx>
+#include <Sound/fg_fx.hxx>
+#include <Time/sunsolver.hxx>
 #include <Time/tmp.hxx>
 
 #include "fg_init.hxx"
+#include "fg_io.hxx"
 #include "fg_commands.hxx"
-
-SG_USING_STD(string);
-SG_USING_STD(ifstream);
-SG_USING_STD(ofstream);
-
 #include "fg_props.hxx"
-#include "fg_io.hxx"
 #include "globals.hxx"
+#include "logger.hxx"
 #include "util.hxx"
 #include "viewmgr.hxx"
+#include "main.hxx"
+
+SG_USING_STD(string);
+SG_USING_STD(ifstream);
+SG_USING_STD(ofstream);
 
 
 
@@ -167,6 +179,14 @@ do_script (const SGPropertyNode * arg)
 }
 #endif // HAVE_PLIB_PSL
 
+/**
+ * Built-in command: run a Nasal script.
+ */
+static bool
+do_nasal (const SGPropertyNode * arg)
+{
+    return ((FGNasalSys*)globals->get_subsystem("nasal"))->handleCommand(arg);
+}
 
 /**
  * Built-in command: exit FlightGear.
@@ -176,9 +196,34 @@ do_script (const SGPropertyNode * arg)
 static bool
 do_exit (const SGPropertyNode * arg)
 {
-  SG_LOG(SG_INPUT, SG_INFO, "Program exit requested.");
-  fgExit(arg->getIntValue("status", 0));
-  return true;
+    SG_LOG(SG_INPUT, SG_INFO, "Program exit requested.");
+    fgSetBool("/sim/signals/exit", true);
+
+    if (fgGetBool("/sim/startup/save-on-exit")) {
+#ifdef _MSC_VER
+        char* envp = ::getenv( "APPDATA" );
+        if ( envp != NULL ) {
+            SGPath config( envp );
+            config.append( "flightgear.org" );
+#else
+        if ( homedir != NULL ) {
+            SGPath config( homedir );
+            config.append( ".fgfs" );
+#endif
+            config.append( "autosave.xml" );
+            config.create_dir( 0700 );
+            SG_LOG(SG_IO, SG_INFO, "Saving user settings to " << config.str());
+            try {
+                writeProperties(config.str(), globals->get_props(), false, SGPropertyNode::USERARCHIVE);
+            } catch (const sg_exception &e) {
+                guiErrorMessage("Error writing autosave.xml: ", e);
+            }
+
+            SG_LOG(SG_INPUT, SG_DEBUG, "Finished Saving user settings");
+        }
+    }
+    fgExit(arg->getIntValue("status", 0));
+    return true;
 }
 
 
@@ -194,21 +239,32 @@ do_reinit (const SGPropertyNode * arg)
     bool result = true;
 
     vector<SGPropertyNode_ptr> subsystems = arg->getChildren("subsystem");
-    if (subsystems.size() == 0)
+    if (subsystems.size() == 0) {
         globals->get_subsystem_mgr()->reinit();
-    else for (int i = 0; i < subsystems.size(); i++) {
-        const char * name = subsystems[i]->getStringValue();
-        FGSubsystem * subsystem = globals->get_subsystem(name);
-        if (subsystem == 0) {
-            result = false;
-            SG_LOG(SG_GENERAL, SG_ALERT, "Subsystem " << name << "not found");
-        } else {
-            subsystem->reinit();
+    } else {
+        for ( unsigned int i = 0; i < subsystems.size(); i++ ) {
+            const char * name = subsystems[i]->getStringValue();
+            SGSubsystem * subsystem = globals->get_subsystem(name);
+            if (subsystem == 0) {
+                result = false;
+                SG_LOG( SG_GENERAL, SG_ALERT,
+                        "Subsystem " << name << "not found" );
+            } else {
+                subsystem->reinit();
+            }
         }
     }
+
+    globals->get_event_mgr()->reinit();
+
     return result;
 }
 
+#if 0
+  //
+  // these routines look useful ??? but are never used in the code ???
+  //
+
 /**
  * Built-in command: suspend one or more subsystems.
  *
@@ -220,9 +276,9 @@ do_suspend (const SGPropertyNode * arg)
     bool result = true;
 
     vector<SGPropertyNode_ptr> subsystems = arg->getChildren("subsystem");
-    for (int i = 0; i < subsystems.size(); i++) {
+    for ( unsigned int i = 0; i < subsystems.size(); i++ ) {
         const char * name = subsystems[i]->getStringValue();
-        FGSubsystem * subsystem = globals->get_subsystem(name);
+        SGSubsystem * subsystem = globals->get_subsystem(name);
         if (subsystem == 0) {
             result = false;
             SG_LOG(SG_GENERAL, SG_ALERT, "Subsystem " << name << "not found");
@@ -244,9 +300,9 @@ do_resume (const SGPropertyNode * arg)
     bool result = true;
 
     vector<SGPropertyNode_ptr> subsystems = arg->getChildren("subsystem");
-    for (int i = 0; i < subsystems.size(); i++) {
+    for ( unsigned int i = 0; i < subsystems.size(); i++ ) {
         const char * name = subsystems[i]->getStringValue();
-        FGSubsystem * subsystem = globals->get_subsystem(name);
+        SGSubsystem * subsystem = globals->get_subsystem(name);
         if (subsystem == 0) {
             result = false;
             SG_LOG(SG_GENERAL, SG_ALERT, "Subsystem " << name << "not found");
@@ -257,6 +313,8 @@ do_resume (const SGPropertyNode * arg)
     return result;
 }
 
+#endif
+
 
 /**
  * Built-in command: load flight.
@@ -274,7 +332,7 @@ do_load (const SGPropertyNode * arg)
     SG_LOG(SG_INPUT, SG_INFO, "Restored flight from " << file);
     return true;
   } else {
-    SG_LOG(SG_INPUT, SG_ALERT, "Cannot load flight from " << file);
+    SG_LOG(SG_INPUT, SG_WARN, "Cannot load flight from " << file);
     return false;
   }
 }
@@ -415,7 +473,6 @@ do_view_cycle (const SGPropertyNode * arg)
   globals->get_viewmgr()->next_view();
   fix_hud_visibility();
   globals->get_tile_mgr()->refresh_view_timestamps();
-//   fgReshape(fgGetInt("/sim/startup/xsize"), fgGetInt("/sim/startup/ysize"));
   return true;
 }
 
@@ -430,6 +487,17 @@ do_screen_capture (const SGPropertyNode * arg)
 }
 
 
+/**
+ * Built-in command: hires capture screen.
+ */
+static bool
+do_hires_screen_capture (const SGPropertyNode * arg)
+{
+  fgHiResDump();
+  return true;
+}
+
+
 /**
  * Reload the tile cache.
  */
@@ -443,7 +511,6 @@ do_tile_cache_reload (const SGPropertyNode * arg)
     if ( !freeze ) {
 	fgSetBool("/sim/freeze/master", true);
     }
-    // BusyCursor(0);
     if ( globals->get_tile_mgr()->init() ) {
 	// Load the local scenery data
         double visibility_meters = fgGetDouble("/environment/visibility-m");
@@ -453,7 +520,6 @@ do_tile_cache_reload (const SGPropertyNode * arg)
 		"Error in Tile Manager initialization!" );
 	exit(-1);
     }
-    // BusyCursor(1);
     if ( !freeze ) {
 	fgSetBool("/sim/freeze/master", false);
     }
@@ -461,14 +527,269 @@ do_tile_cache_reload (const SGPropertyNode * arg)
 }
 
 
+/**
+ * Set the sea level outside air temperature and assigning that to all
+ * boundary and aloft environment layers.
+ */
+static bool
+do_set_sea_level_degc (const SGPropertyNode * arg)
+{
+    double temp_sea_level_degc = arg->getDoubleValue("temp-degc", 15.0);
+
+    SGPropertyNode *node, *child;
+
+    // boundary layers
+    node = fgGetNode( "/environment/config/boundary" );
+    if ( node != NULL ) {
+      int i = 0;
+      while ( ( child = node->getNode( "entry", i ) ) != NULL ) {
+	child->setDoubleValue( "temperature-sea-level-degc",
+			       temp_sea_level_degc );
+	++i;
+      }
+    }
+
+    // aloft layers
+    node = fgGetNode( "/environment/config/aloft" );
+    if ( node != NULL ) {
+      int i = 0;
+      while ( ( child = node->getNode( "entry", i ) ) != NULL ) {
+	child->setDoubleValue( "temperature-sea-level-degc",
+			       temp_sea_level_degc );
+	++i;
+      }
+    }
+
+    return true;
+}
+
+
+/**
+ * Set the outside air temperature at the "current" altitude by first
+ * calculating the corresponding sea level temp, and assigning that to
+ * all boundary and aloft environment layers.
+ */
+static bool
+do_set_oat_degc (const SGPropertyNode * arg)
+{
+    const string &temp_str = arg->getStringValue("temp-degc", "15.0");
+
+    // check for an altitude specified in the arguments, otherwise use
+    // current aircraft altitude.
+    const SGPropertyNode *altitude_ft = arg->getChild("altitude-ft");
+    if ( altitude_ft == NULL ) {
+        altitude_ft = fgGetNode("/position/altitude-ft");
+    }
+
+    FGEnvironment dummy;	// instantiate a dummy so we can leech a method
+    dummy.set_elevation_ft( altitude_ft->getDoubleValue() );
+    dummy.set_temperature_degc( atof( temp_str.c_str() ) );
+    double temp_sea_level_degc = dummy.get_temperature_sea_level_degc();
+
+    //cout << "Altitude = " << altitude_ft->getDoubleValue() << endl;
+    //cout << "Temp at alt (C) = " << atof( temp_str.c_str() ) << endl;
+    //cout << "Temp sea level (C) = " << temp_sea_level_degc << endl;
+ 
+    SGPropertyNode *node, *child;
+
+    // boundary layers
+    node = fgGetNode( "/environment/config/boundary" );
+    if ( node != NULL ) {
+      int i = 0;
+      while ( ( child = node->getNode( "entry", i ) ) != NULL ) {
+	child->setDoubleValue( "temperature-sea-level-degc",
+			       temp_sea_level_degc );
+	++i;
+      }
+    }
+
+    // aloft layers
+    node = fgGetNode( "/environment/config/aloft" );
+    if ( node != NULL ) {
+      int i = 0;
+      while ( ( child = node->getNode( "entry", i ) ) != NULL ) {
+	child->setDoubleValue( "temperature-sea-level-degc",
+			       temp_sea_level_degc );
+	++i;
+      }
+    }
+
+    return true;
+}
+
+/**
+ * Set the sea level outside air dewpoint and assigning that to all
+ * boundary and aloft environment layers.
+ */
+static bool
+do_set_dewpoint_sea_level_degc (const SGPropertyNode * arg)
+{
+    double dewpoint_sea_level_degc = arg->getDoubleValue("dewpoint-degc", 5.0);
+
+    SGPropertyNode *node, *child;
+
+    // boundary layers
+    node = fgGetNode( "/environment/config/boundary" );
+    if ( node != NULL ) {
+      int i = 0;
+      while ( ( child = node->getNode( "entry", i ) ) != NULL ) {
+	child->setDoubleValue( "dewpoint-sea-level-degc",
+			       dewpoint_sea_level_degc );
+	++i;
+      }
+    }
+
+    // aloft layers
+    node = fgGetNode( "/environment/config/aloft" );
+    if ( node != NULL ) {
+      int i = 0;
+      while ( ( child = node->getNode( "entry", i ) ) != NULL ) {
+	child->setDoubleValue( "dewpoint-sea-level-degc",
+			       dewpoint_sea_level_degc );
+	++i;
+      }
+    }
+
+    return true;
+}
+
+
+/**
+ * Set the outside air dewpoint at the "current" altitude by first
+ * calculating the corresponding sea level dewpoint, and assigning
+ * that to all boundary and aloft environment layers.
+ */
+static bool
+do_set_dewpoint_degc (const SGPropertyNode * arg)
+{
+    const string &dewpoint_str = arg->getStringValue("dewpoint-degc", "5.0");
+
+    // check for an altitude specified in the arguments, otherwise use
+    // current aircraft altitude.
+    const SGPropertyNode *altitude_ft = arg->getChild("altitude-ft");
+    if ( altitude_ft == NULL ) {
+        altitude_ft = fgGetNode("/position/altitude-ft");
+    }
+
+    FGEnvironment dummy;	// instantiate a dummy so we can leech a method
+    dummy.set_elevation_ft( altitude_ft->getDoubleValue() );
+    dummy.set_dewpoint_degc( atof( dewpoint_str.c_str() ) );
+    double dewpoint_sea_level_degc = dummy.get_dewpoint_sea_level_degc();
+
+    //cout << "Altitude = " << altitude_ft->getDoubleValue() << endl;
+    //cout << "Dewpoint at alt (C) = " << atof( dewpoint_str.c_str() ) << endl;
+    //cout << "Dewpoint at sea level (C) = " << dewpoint_sea_level_degc << endl;
+ 
+    SGPropertyNode *node, *child;
+
+    // boundary layers
+    node = fgGetNode( "/environment/config/boundary" );
+    if ( node != NULL ) {
+      int i = 0;
+      while ( ( child = node->getNode( "entry", i ) ) != NULL ) {
+	child->setDoubleValue( "dewpoint-sea-level-degc",
+			       dewpoint_sea_level_degc );
+	++i;
+      }
+    }
+
+    // aloft layers
+    node = fgGetNode( "/environment/config/aloft" );
+    if ( node != NULL ) {
+      int i = 0;
+      while ( ( child = node->getNode( "entry", i ) ) != NULL ) {
+	child->setDoubleValue( "dewpoint-sea-level-degc",
+			       dewpoint_sea_level_degc );
+	++i;
+      }
+    }
+
+    return true;
+}
+
 /**
  * Update the lighting manually.
  */
 static bool
-do_lighting_update (const SGPropertyNode * arg)
+do_timeofday (const SGPropertyNode * arg)
 {
-  fgUpdateSkyAndLightingParams();
-  return true;
+    const string &offset_type = arg->getStringValue("timeofday", "noon");
+
+    static const SGPropertyNode *longitude
+        = fgGetNode("/position/longitude-deg");
+    static const SGPropertyNode *latitude
+        = fgGetNode("/position/latitude-deg");
+    static const SGPropertyNode *cur_time_override
+        = fgGetNode("/sim/time/cur-time-override", true);
+
+    int orig_warp = globals->get_warp();
+    SGTime *t = globals->get_time_params();
+    time_t cur_time = t->get_cur_time();
+    // cout << "cur_time = " << cur_time << endl;
+    // cout << "orig_warp = " << orig_warp << endl;
+
+    int warp = 0;
+    if ( offset_type == "real" ) {
+        warp = -orig_warp;
+    } else if ( offset_type == "dawn" ) {
+        warp = fgTimeSecondsUntilSunAngle( cur_time,
+                                           longitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           latitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           90.0, true ); 
+    } else if ( offset_type == "morning" ) {
+        warp = fgTimeSecondsUntilSunAngle( cur_time,
+                                           longitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           latitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           75.0, true ); 
+    } else if ( offset_type == "noon" ) {
+        warp = fgTimeSecondsUntilSunAngle( cur_time,
+                                           longitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           latitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           0.0, true ); 
+    } else if ( offset_type == "afternoon" ) {
+        warp = fgTimeSecondsUntilSunAngle( cur_time,
+                                           longitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           latitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           60.0, false ); 
+     } else if ( offset_type == "dusk" ) {
+        warp = fgTimeSecondsUntilSunAngle( cur_time,
+                                           longitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           latitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           90.0, false ); 
+     } else if ( offset_type == "evening" ) {
+        warp = fgTimeSecondsUntilSunAngle( cur_time,
+                                           longitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           latitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           100.0, false ); 
+    } else if ( offset_type == "midnight" ) {
+        warp = fgTimeSecondsUntilSunAngle( cur_time,
+                                           longitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           latitude->getDoubleValue()
+                                             * SGD_DEGREES_TO_RADIANS,
+                                           180.0, false ); 
+    }
+    // cout << "warp = " << warp << endl;
+    globals->set_warp( orig_warp + warp );
+
+    t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
+               latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
+               cur_time_override->getLongValue(),
+               globals->get_warp() );
+
+    return true;
 }
 
 
@@ -699,10 +1020,45 @@ do_property_randomize (const SGPropertyNode * arg)
     double min = arg->getDoubleValue("min", DBL_MIN);
     double max = arg->getDoubleValue("max", DBL_MAX);
     prop->setDoubleValue(sg_random() * (max - min) + min);
-    std::cerr << "Random value is " << prop->getDoubleValue() << std::endl;
+    return true;
 }
 
 
+/**
+ * Built-in command: reinit the data logging system based on the
+ * current contents of the /logger tree.
+ */
+static bool
+do_data_logging_commit (const SGPropertyNode * arg)
+{
+    FGLogger *log = (FGLogger *)globals->get_subsystem("logger");
+    log->reinit();
+    return true;
+}
+
+/**
+ * Built-in command: Add a dialog to the GUI system.  Does *not*
+ * display the dialog.  The property node should have the same format
+ * as a dialog XML configuration.  It must include:
+ *
+ * name: the name of the GUI dialog for future reference.
+ */
+static bool
+do_dialog_new (const SGPropertyNode * arg)
+{
+    NewGUI * gui = (NewGUI *)globals->get_subsystem("gui");
+
+    // Note the casting away of const: this is *real*.  Doing a
+    // "dialog-apply" command later on will mutate this property node.
+    // I'm not convinced that this isn't the Right Thing though; it
+    // allows client to create a node, pass it to dialog-new, and get
+    // the values back from the dialog by reading the same node.
+    // Perhaps command arguments are not as "const" as they would
+    // seem?
+    gui->newDialog((SGPropertyNode*)arg);
+    return true;
+}
+
 /**
  * Built-in command: Show an XML-configured dialog.
  *
@@ -724,6 +1080,8 @@ static bool
 do_dialog_close (const SGPropertyNode * arg)
 {
     NewGUI * gui = (NewGUI *)globals->get_subsystem("gui");
+    if(arg->hasValue("dialog-name"))
+        return gui->closeDialog(arg->getStringValue("dialog-name"));
     return gui->closeActiveDialog();
 }
 
@@ -737,13 +1095,14 @@ static bool
 do_dialog_update (const SGPropertyNode * arg)
 {
     NewGUI * gui = (NewGUI *)globals->get_subsystem("gui");
-    FGDialog * dialog = gui->getActiveDialog();
+    FGDialog * dialog;
+    if (arg->hasValue("dialog-name"))
+        dialog = gui->getDialog(arg->getStringValue("dialog-name"));
+    else
+        dialog = gui->getActiveDialog();
+
     if (dialog != 0) {
-        if (arg->hasValue("object-name")) {
-            dialog->updateValue(arg->getStringValue("object-name"));
-        } else {
-            dialog->updateValues();
-        }
+        dialog->updateValues(arg->getStringValue("object-name"));
         return true;
     } else {
         return false;
@@ -760,16 +1119,14 @@ static bool
 do_dialog_apply (const SGPropertyNode * arg)
 {
     NewGUI * gui = (NewGUI *)globals->get_subsystem("gui");
-    FGDialog * dialog = gui->getActiveDialog();
+    FGDialog * dialog;
+    if (arg->hasValue("dialog-name"))
+        dialog = gui->getDialog(arg->getStringValue("dialog-name"));
+    else
+        dialog = gui->getActiveDialog();
+
     if (dialog != 0) {
-        if (arg->hasValue("object-name")) {
-            const char * name = arg->getStringValue("object-name");
-            dialog->applyValue(name);
-            dialog->updateValue(name);
-        } else {
-            dialog->applyValues();
-            dialog->updateValues();
-        }
+        dialog->applyValues(arg->getStringValue("object-name"));
         return true;
     } else {
         return false;
@@ -777,6 +1134,37 @@ do_dialog_apply (const SGPropertyNode * arg)
 }
 
 
+/**
+ * Redraw GUI (applying new widget colors). Doesn't reload the dialogs,
+ * unlike reinit().
+ */
+static bool
+do_gui_redraw (const SGPropertyNode * arg)
+{
+    NewGUI * gui = (NewGUI *)globals->get_subsystem("gui");
+    gui->redraw();
+    return true;
+}
+
+/**
+ * Built-in command: play an audio message (i.e. a wav file) This is
+ * fire and forget.  Call this once per message and it will get dumped
+ * into a queue.  Messages are played sequentially so they do not
+ * overlap.
+ */
+static bool
+do_play_audio_message (const SGPropertyNode * arg)
+{
+    FGFX *fx = (FGFX *)globals->get_subsystem("fx");
+    string path = arg->getStringValue("path");
+    string file = arg->getStringValue("file");
+    double volume = arg->getDoubleValue("volume");
+    // cout << "playing " << path << " / " << file << endl;
+    fx->play_message( path, file, volume );
+
+    return true;
+}
+
 /**
  * Built-in command: commit presets (read from in /sim/presets/)
  */
@@ -791,7 +1179,6 @@ do_presets_commit (const SGPropertyNode * arg)
     // set position from presets
     fgInitPosition();
 
-    // BusyCursor(0);
     fgReInitSubsystems();
 
     globals->get_tile_mgr()->update( fgGetDouble("/environment/visibility-m") );
@@ -817,9 +1204,196 @@ do_log_level (const SGPropertyNode * arg)
    return true;
 }
 
+/**
+ * Built-in command: replay the FDR buffer
+ */
+static bool
+do_replay (const SGPropertyNode * arg)
+{
+    // freeze the master fdm
+    fgSetInt( "/sim/freeze/replay-state", 1 );
+
+    FGReplay *r = (FGReplay *)(globals->get_subsystem( "replay" ));
+
+    fgSetDouble( "/sim/replay/start-time", r->get_start_time() );
+    fgSetDouble( "/sim/replay/end-time", r->get_end_time() );
+    double duration = fgGetDouble( "/sim/replay/duration" );
+    if( duration && duration < (r->get_end_time() - r->get_start_time()) ) {
+        fgSetDouble( "/sim/replay/time", r->get_end_time() - duration );
+    } else {
+        fgSetDouble( "/sim/replay/time", r->get_start_time() );
+    }
+
+    // cout << "start = " << r->get_start_time()
+    //      << "  end = " << r->get_end_time() << endl;
+
+    return true;
+}
+
+
+/**
+ * Return terrain elevation for given longitude/latitude pair.
+ */
+static bool
+do_terrain_elevation (const SGPropertyNode * arg)
+{
+    double lon = arg->getDoubleValue("longitude-deg", 0.0);
+    double lat = arg->getDoubleValue("latitude-deg", 0.0);
+    double elev;
+    bool ret = globals->get_scenery()->get_elevation_m(lat, lon, 10000.0, elev, 0, false);
+    const_cast<SGPropertyNode *>(arg)->setDoubleValue("elevation-m", elev);
+    return ret;
+}
+
+
+static bool
+do_decrease_visibility (const SGPropertyNode * arg)
+{
+    double new_value = fgGetDouble("/environment/visibility-m") * 0.9;
+    fgSetDouble("/environment/visibility-m", new_value);
+    fgDefaultWeatherValue("visibility-m", new_value);
+    globals->get_subsystem("environment")->reinit();
+
+    return true;
+}
+ 
+static bool
+do_increase_visibility (const SGPropertyNode * arg)
+{
+    double new_value = fgGetDouble("/environment/visibility-m") * 1.1;
+    fgSetDouble("/environment/visibility-m", new_value);
+    fgDefaultWeatherValue("visibility-m", new_value);
+    globals->get_subsystem("environment")->reinit();
+
+    return true;
+}
+
+static bool
+do_hud_init(const SGPropertyNode *)
+{
+    fgHUDInit(0); // minimal HUD
+    return true;
+}
+
+static bool
+do_hud_init2(const SGPropertyNode *)
+{
+    fgHUDInit2(0);  // normal HUD
+    return true;
+}
+
+/**
+ * An fgcommand to allow loading of xml files via nasal,
+ * the xml file's structure will be made available within
+ * a (definable) property tree node
+ *
+ * @param filename a string to hold the complete path & filename of a XML file
+ * @param targetnode a string pointing to a location within the property tree
+ * where to store the parsed XML file
+ */
+
+static bool 
+do_load_xml_to_proptree(const SGPropertyNode * node)
+{
+    // SG_LOG(SG_GENERAL, SG_ALERT, "fgcommand loadxml executed");
+
+    SGPropertyNode * targetnode;
+    targetnode = fgGetNode(node->getNode("targetnode")->getStringValue(),true);
+		
+    const char *filename = node->getNode("filename")->getStringValue();
+    try {
+        fgLoadProps(filename, targetnode);
+    } catch (const sg_exception &e) {
+        string errmsg = "Error reading file " + string(filename) + ":\n";
+        guiErrorMessage(errmsg.c_str(), e);
+        return false;
+    }
+
+    return  true;
+}
+
+
+/**
+ * an fgcommand to allow saving of xml files via nasal,
+ * the file's structure will be determined based on what's
+ * encountered in the passed (source) property tree node
+ *
+ * @param filename a string to hold the complete path & filename of the (new)
+ * XML file
+ * @param sourcenode a string pointing to a location within the property tree
+ * where to find the nodes that should be written recursively into an XML file
+ *
+ * TODO: 
+ *   deal with already existing filenames, optionally return error/success
+ *   values in a separate node to provide status information
+ *
+ * note: it's directly using writeProperties, which is not necessarily
+ *       preferable, but for now it should work ...
+ */
+
+static bool 
+do_save_xml_from_proptree(const SGPropertyNode * node)
+{
+    //TODO: do Parameter validation !
+    SGPropertyNode * sourcenode;
+    sourcenode = fgGetNode(node->getNode("sourcenode")->getStringValue(),true);
+
+    const char *filename = node->getNode("filename")->getStringValue();
+    try {
+        writeProperties (filename, sourcenode, true);
+    } catch (const sg_exception &e) {
+        string errmsg = "Error writing file " + string(filename) + ":\n";
+        guiErrorMessage(errmsg.c_str(), e);
+        return false;
+    }
+
+    return true;
+}
+
+static bool
+do_press_cockpit_button (const SGPropertyNode *arg)
+{
+  const char *prefix = arg->getStringValue("prefix");
+
+  if (arg->getBoolValue("guarded") && fgGetDouble((string(prefix) + "-guard").c_str()) < 1)
+    return true;
+
+  string prop = string(prefix) + "-button";
+  double value;
+
+  if (arg->getBoolValue("latching"))
+    value = fgGetDouble(prop.c_str()) > 0 ? 0 : 1;
+  else
+    value = 1;
+
+  fgSetDouble(prop.c_str(), value);
+  fgSetBool(arg->getStringValue("discrete"), value > 0);
+
+  return true;
+}
+
+static bool
+do_release_cockpit_button (const SGPropertyNode *arg)
+{
+  const char *prefix = arg->getStringValue("prefix");
+
+  if (arg->getBoolValue("guarded")) {
+    string prop = string(prefix) + "-guard";
+    if (fgGetDouble(prop.c_str()) < 1) {
+      fgSetDouble(prop.c_str(), 1);
+      return true;
+    }
+  }
+
+  if (! arg->getBoolValue("latching")) {
+    fgSetDouble((string(prefix) + "-button").c_str(), 0);
+    fgSetBool(arg->getStringValue("discrete"), false);
+  }
+
+  return true;
+}
 
 
-
 ////////////////////////////////////////////////////////////////////////
 // Command setup.
 ////////////////////////////////////////////////////////////////////////
@@ -839,6 +1413,7 @@ static struct {
 #if defined(HAVE_PLIB_PSL)
     { "script", do_script },
 #endif // HAVE_PLIB_PSL
+    { "nasal", do_nasal },
     { "exit", do_exit },
     { "reinit", do_reinit },
     { "suspend", do_reinit },
@@ -850,8 +1425,13 @@ static struct {
     { "preferences-load", do_preferences_load },
     { "view-cycle", do_view_cycle },
     { "screen-capture", do_screen_capture },
+    { "hires-screen-capture", do_hires_screen_capture },
     { "tile-cache-reload", do_tile_cache_reload },
-    { "lighting-update", do_lighting_update },
+    { "set-sea-level-air-temp-degc", do_set_sea_level_degc },
+    { "set-outside-air-temp-degc", do_set_oat_degc },
+    { "set-dewpoint-sea-level-air-temp-degc", do_set_dewpoint_sea_level_degc },
+    { "set-dewpoint-temp-degc", do_set_dewpoint_degc },
+    { "timeofday", do_timeofday },
     { "property-toggle", do_property_toggle },
     { "property-assign", do_property_assign },
     { "property-adjust", do_property_adjust },
@@ -860,13 +1440,26 @@ static struct {
     { "property-scale", do_property_scale },
     { "property-cycle", do_property_cycle },
     { "property-randomize", do_property_randomize },
+    { "data-logging-commit", do_data_logging_commit },
+    { "dialog-new", do_dialog_new },
     { "dialog-show", do_dialog_show },
     { "dialog-close", do_dialog_close },
-    { "dialog-show", do_dialog_show },
     { "dialog-update", do_dialog_update },
     { "dialog-apply", do_dialog_apply },
+    { "gui-redraw", do_gui_redraw },
+    { "play-audio-message", do_play_audio_message },
     { "presets-commit", do_presets_commit },
     { "log-level", do_log_level },
+    { "replay", do_replay },
+    { "terrain-elevation", do_terrain_elevation },
+    { "decrease-visibility", do_decrease_visibility },
+    { "increase-visibility", do_increase_visibility },
+    { "hud-init", do_hud_init },
+    { "hud-init2", do_hud_init2 },
+    { "loadxml", do_load_xml_to_proptree},
+    { "savexml", do_save_xml_from_proptree },    
+    { "press-cockpit-button", do_press_cockpit_button },
+    { "release-cockpit-button", do_release_cockpit_button },
     { 0, 0 }			// zero-terminated
 };