Initial revision.

diff --git a/Main/fg_init.c b/Main/fg_init.c
new file mode 100644 (file)
index 0000000..933cfc2
--- /dev/null
+++ b/Main/fg_init.c
@@ -0,0 +1,176 @@
+/**************************************************************************
+ * fg_init.c -- Flight Gear top level initialization routines
+ *
+ * Written by Curtis Olson, started August 1997.
+ *
+ * Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "fg_init.h"
+
+#include "../constants.h"
+#include "../general.h"
+
+#include "../Aircraft/aircraft.h"
+#include "../Math/fg_random.h"
+#include "../Scenery/mesh.h"
+#include "../Scenery/scenery.h"
+#include "../Time/sunpos.h"
+#include "../Weather/weather.h"
+
+
+/* General house keeping initializations */
+
+void fgInitGeneral( void ) {
+    struct general_params *g;
+
+    g = &general;
+
+    /* seed the random number generater */
+    fg_srandom();
+
+    /* determine the fg root path */
+    if ( (g->root_dir = getenv("FG_ROOT")) == NULL ) {
+       /* environment variable not defined */
+       printf("FG_ROOT needs to be defined!  See the documentation.\n");
+       exit(0);
+    } 
+    printf("FG_ROOT = %s\n", g->root_dir);
+}
+
+
+/* This is the top level init routine which calls all the other
+ * initialization routines.  If you are adding a subsystem to flight
+ * gear, its initialization call should located in this routine.*/
+
+void fgInitSubsystems( void ) {
+    double cur_elev;
+
+    struct flight_params *f;
+
+    f = &current_aircraft.flight;
+
+    /****************************************************************
+     * The following section sets up the flight model EOM parameters and 
+     * should really be read in from one or more files.
+     ****************************************************************/
+
+    /* Globe Aiport, AZ */
+    FG_Runway_altitude = 3234.5;
+    FG_Runway_latitude = 120070.41;
+    FG_Runway_longitude = -398391.28;
+    FG_Runway_heading = 102.0 * DEG_TO_RAD;
+
+    /* Initial Position at GLOBE airport */
+    FG_Latitude  = (  120070.41 / 3600.0 ) * DEG_TO_RAD;
+    FG_Longitude = ( -398391.28 / 3600.0 ) * DEG_TO_RAD;
+    FG_Altitude = FG_Runway_altitude + 3.758099;
+
+    /* Initial Position north of the city of Globe */
+    /* FG_Latitude  = (  120625.64 / 3600.0 ) * DEG_TO_RAD; */
+    /* FG_Longitude = ( -398673.28 / 3600.0 ) * DEG_TO_RAD; */
+    /* FG_Altitude = 0.0 + 3.758099; */
+
+    printf("Initial position is: (%.4f, %.4f, %.2f)\n", 
+          FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG, 
+          FG_Altitude * FEET_TO_METER);
+
+      /* Initial Velocity */
+    FG_V_north = 0.0 /*  7.287719E+00 */;
+    FG_V_east  = 0.0 /*  1.521770E+03 */;
+    FG_V_down  = 0.0 /* -1.265722E-05 */;
+
+    /* Initial Orientation */
+    FG_Phi   = -2.658474E-06;
+    FG_Theta =  7.401790E-03;
+    FG_Psi   =  270.0 * DEG_TO_RAD;
+    /* FG_Psi   =  0.0 * DEG_TO_RAD; */
+
+    /* Initial Angular B rates */
+    FG_P_body = 7.206685E-05;
+    FG_Q_body = 0.000000E+00;
+    FG_R_body = 9.492658E-05;
+
+    FG_Earth_position_angle = 0.000000E+00;
+
+    /* Mass properties and geometry values */
+    FG_Mass = 8.547270E+01;
+    FG_I_xx = 1.048000E+03;
+    FG_I_yy = 3.000000E+03;
+    FG_I_zz = 3.530000E+03;
+    FG_I_xz = 0.000000E+00;
+
+    /* CG position w.r.t. ref. point */
+    FG_Dx_cg = 0.000000E+00;
+    FG_Dy_cg = 0.000000E+00;
+    FG_Dz_cg = 0.000000E+00;
+
+    /* Set initial position and slew parameters */
+    /* fgSlewInit(-398391.3, 120070.41, 244, 3.1415); */ /* GLOBE Airport */
+    /* fgSlewInit(-335340,162540, 15, 4.38); */
+    /* fgSlewInit(-398673.28,120625.64, 53, 4.38); */
+
+    /* Initialize shared sun position and sun_vec */
+    fgUpdateSunPos();
+
+    /* Initialize the weather modeling subsystem */
+    fgWeatherInit();
+
+    /* Initialize the Scenery Management subsystem */
+    fgSceneryInit();
+
+    /* Tell the Scenery Management system where we are so it can load
+     * the correct scenery data */
+    fgSceneryUpdate(FG_Latitude, FG_Longitude, FG_Altitude);
+
+
+    /* I'm just sticking this here for now, it should probably move 
+     * eventually */
+    cur_elev = mesh_altitude(FG_Longitude * RAD_TO_DEG * 3600.0, 
+                            FG_Latitude  * RAD_TO_DEG * 3600.0);
+    printf("Ground elevation is %.2f meters here.\n", cur_elev);
+    if ( cur_elev > -9990.0 ) {
+       FG_Runway_altitude = cur_elev * METER_TO_FEET;
+    }
+
+    if ( FG_Altitude < FG_Runway_altitude ) {
+       FG_Altitude = FG_Runway_altitude + 3.758099;
+    }
+    printf("Updated position is: (%.4f, %.4f, %.2f)\n", 
+          FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG, 
+          FG_Altitude * FEET_TO_METER);
+    /* end of thing that I just stuck in that I should probably move */
+
+
+    /* Initialize the flight model subsystem data structures base on
+     * above values */
+    fgFlightModelInit( FG_LARCSIM, f, 1.0 / DEFAULT_MODEL_HZ );
+}
+
+
+/* $Log$
+/* Revision 1.1  1997/08/23 01:46:20  curt
+/* Initial revision.
+/*
+ */

diff --git a/Main/fg_init.h b/Main/fg_init.h
new file mode 100644 (file)
index 0000000..4b4372b
--- /dev/null
+++ b/Main/fg_init.h
@@ -0,0 +1,47 @@
+/**************************************************************************
+ * fg_init.h -- Flight Gear top level initialization routines
+ *
+ * Written by Curtis Olson, started August 1997.
+ *
+ * Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#ifndef FG_INIT_H
+#define FG_INIT_H
+
+
+/* General house keeping initializations */
+void fgInitGeneral( void );
+
+/* This is the top level init routine which calls all the other
+ * initialization routines.  If you are adding a subsystem to flight
+ * gear, its initialization call should located in this routine.*/
+void fgInitSubsystems( void );
+
+
+#endif /* FG_INIT_H */
+
+
+/* $Log$
+/* Revision 1.1  1997/08/23 01:46:20  curt
+/* Initial revision.
+/*
+ */