/************************************************************************** * 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 #include #include "fg_init.h" #include "views.h" #include "../constants.h" #include "../general.h" #include "../Aircraft/aircraft.h" #include "../Cockpit/cockpit.h" #include "../Joystick/joystick.h" #include "../Math/fg_random.h" #include "../Scenery/mesh.h" #include "../Scenery/scenery.h" #include "../Scenery/stars.h" #include "../Time/fg_time.h" #include "../Time/sunpos.h" #include "../Weather/weather.h" extern int show_hud; /* HUD state */ /* General house keeping initializations */ void fgInitGeneral( void ) { struct GENERAL *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 *f; struct TIME *t; struct VIEW *v; f = ¤t_aircraft.flight; t = &cur_time_params; v = ¤t_view; /**************************************************************** * 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; /* FG_Altitude = 20000; */ /* 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; */ /* Initial Position: 10125 Jewell St. NE */ /* FG_Latitude = ( 45.15 ) * DEG_TO_RAD; */ /* FG_Longitude = ( -93.15 ) * DEG_TO_RAD; */ /* FG_Altitude = FG_Runway_altitude + 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 "time" */ fgTimeInit(t); fgTimeUpdate(f, t); /* Initialize shared sun position and sun_vec */ fgUpdateSunPos(scenery.center); /* Initialize view parameters */ fgViewInit(v); /* Initialize the weather modeling subsystem */ fgWeatherInit(); /* Initialize the Cockpit subsystem */ if( fgCockpitInit( current_aircraft ) == NULL ) { printf( "Error in Cockpit initialization!\n" ); exit( 1 ); } /* Initialize the Stars subsystem */ fgStarsInit(); /* 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 ); /* To HUD or not to HUD */ show_hud = 1; /* Joystick support */ fgJoystickInit( 0 ); } /* $Log$ /* Revision 1.7 1997/09/16 15:50:30 curt /* Working on star alignment and time issues. /* * Revision 1.6 1997/09/05 14:17:30 curt * More tweaking with stars. * * Revision 1.5 1997/09/04 02:17:36 curt * Shufflin' stuff. * * Revision 1.4 1997/08/27 21:32:26 curt * Restructured view calculation code. Added stars. * * Revision 1.3 1997/08/27 03:30:19 curt * Changed naming scheme of basic shared structures. * * Revision 1.2 1997/08/25 20:27:23 curt * Merged in initial HUD and Joystick code. * * Revision 1.1 1997/08/23 01:46:20 curt * Initial revision. * */