Initial revision.
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176
Main/fg_init.c
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176
Main/fg_init.c
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/**************************************************************************
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* fg_init.c -- Flight Gear top level initialization routines
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*
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* Written by Curtis Olson, started August 1997.
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*
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* Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id$
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* (Log is kept at end of this file)
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**************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "fg_init.h"
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#include "../constants.h"
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#include "../general.h"
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#include "../Aircraft/aircraft.h"
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#include "../Math/fg_random.h"
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#include "../Scenery/mesh.h"
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#include "../Scenery/scenery.h"
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#include "../Time/sunpos.h"
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#include "../Weather/weather.h"
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/* General house keeping initializations */
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void fgInitGeneral( void ) {
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struct general_params *g;
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g = &general;
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/* seed the random number generater */
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fg_srandom();
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/* determine the fg root path */
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if ( (g->root_dir = getenv("FG_ROOT")) == NULL ) {
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/* environment variable not defined */
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printf("FG_ROOT needs to be defined! See the documentation.\n");
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exit(0);
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}
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printf("FG_ROOT = %s\n", g->root_dir);
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}
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/* This is the top level init routine which calls all the other
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* initialization routines. If you are adding a subsystem to flight
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* gear, its initialization call should located in this routine.*/
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void fgInitSubsystems( void ) {
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double cur_elev;
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struct flight_params *f;
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f = ¤t_aircraft.flight;
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/****************************************************************
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* The following section sets up the flight model EOM parameters and
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* should really be read in from one or more files.
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****************************************************************/
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/* Globe Aiport, AZ */
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FG_Runway_altitude = 3234.5;
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FG_Runway_latitude = 120070.41;
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FG_Runway_longitude = -398391.28;
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FG_Runway_heading = 102.0 * DEG_TO_RAD;
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/* Initial Position at GLOBE airport */
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FG_Latitude = ( 120070.41 / 3600.0 ) * DEG_TO_RAD;
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FG_Longitude = ( -398391.28 / 3600.0 ) * DEG_TO_RAD;
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FG_Altitude = FG_Runway_altitude + 3.758099;
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/* Initial Position north of the city of Globe */
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/* FG_Latitude = ( 120625.64 / 3600.0 ) * DEG_TO_RAD; */
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/* FG_Longitude = ( -398673.28 / 3600.0 ) * DEG_TO_RAD; */
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/* FG_Altitude = 0.0 + 3.758099; */
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printf("Initial position is: (%.4f, %.4f, %.2f)\n",
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FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
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FG_Altitude * FEET_TO_METER);
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/* Initial Velocity */
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FG_V_north = 0.0 /* 7.287719E+00 */;
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FG_V_east = 0.0 /* 1.521770E+03 */;
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FG_V_down = 0.0 /* -1.265722E-05 */;
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/* Initial Orientation */
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FG_Phi = -2.658474E-06;
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FG_Theta = 7.401790E-03;
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FG_Psi = 270.0 * DEG_TO_RAD;
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/* FG_Psi = 0.0 * DEG_TO_RAD; */
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/* Initial Angular B rates */
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FG_P_body = 7.206685E-05;
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FG_Q_body = 0.000000E+00;
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FG_R_body = 9.492658E-05;
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FG_Earth_position_angle = 0.000000E+00;
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/* Mass properties and geometry values */
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FG_Mass = 8.547270E+01;
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FG_I_xx = 1.048000E+03;
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FG_I_yy = 3.000000E+03;
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FG_I_zz = 3.530000E+03;
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FG_I_xz = 0.000000E+00;
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/* CG position w.r.t. ref. point */
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FG_Dx_cg = 0.000000E+00;
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FG_Dy_cg = 0.000000E+00;
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FG_Dz_cg = 0.000000E+00;
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/* Set initial position and slew parameters */
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/* fgSlewInit(-398391.3, 120070.41, 244, 3.1415); */ /* GLOBE Airport */
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/* fgSlewInit(-335340,162540, 15, 4.38); */
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/* fgSlewInit(-398673.28,120625.64, 53, 4.38); */
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/* Initialize shared sun position and sun_vec */
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fgUpdateSunPos();
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/* Initialize the weather modeling subsystem */
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fgWeatherInit();
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/* Initialize the Scenery Management subsystem */
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fgSceneryInit();
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/* Tell the Scenery Management system where we are so it can load
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* the correct scenery data */
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fgSceneryUpdate(FG_Latitude, FG_Longitude, FG_Altitude);
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/* I'm just sticking this here for now, it should probably move
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* eventually */
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cur_elev = mesh_altitude(FG_Longitude * RAD_TO_DEG * 3600.0,
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FG_Latitude * RAD_TO_DEG * 3600.0);
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printf("Ground elevation is %.2f meters here.\n", cur_elev);
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if ( cur_elev > -9990.0 ) {
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FG_Runway_altitude = cur_elev * METER_TO_FEET;
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}
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if ( FG_Altitude < FG_Runway_altitude ) {
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FG_Altitude = FG_Runway_altitude + 3.758099;
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}
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printf("Updated position is: (%.4f, %.4f, %.2f)\n",
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FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
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FG_Altitude * FEET_TO_METER);
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/* end of thing that I just stuck in that I should probably move */
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/* Initialize the flight model subsystem data structures base on
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* above values */
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fgFlightModelInit( FG_LARCSIM, f, 1.0 / DEFAULT_MODEL_HZ );
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}
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/* $Log$
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/* Revision 1.1 1997/08/23 01:46:20 curt
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/* Initial revision.
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/*
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*/
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47
Main/fg_init.h
Normal file
47
Main/fg_init.h
Normal file
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@ -0,0 +1,47 @@
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/**************************************************************************
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* fg_init.h -- Flight Gear top level initialization routines
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*
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* Written by Curtis Olson, started August 1997.
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*
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* Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id$
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* (Log is kept at end of this file)
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**************************************************************************/
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#ifndef FG_INIT_H
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#define FG_INIT_H
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/* General house keeping initializations */
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void fgInitGeneral( void );
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/* This is the top level init routine which calls all the other
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* initialization routines. If you are adding a subsystem to flight
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* gear, its initialization call should located in this routine.*/
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void fgInitSubsystems( void );
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#endif /* FG_INIT_H */
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/* $Log$
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/* Revision 1.1 1997/08/23 01:46:20 curt
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/* Initial revision.
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/*
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*/
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