1 /**************************************************************************
2 * weather.c -- routines to model weather
4 * Written by Curtis Olson, started July 1997.
6 * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * (Log is kept at end of this file)
24 **************************************************************************/
29 #include <Weather/weather.h>
30 #include <Aircraft/aircraft.h>
31 #include <Math/fg_random.h>
34 /* This is a record containing current weather info */
35 struct fgWEATHER current_weather;
38 /* Initialize the weather modeling subsystem */
39 void fgWeatherInit( void ) {
44 printf("Initializing weather subsystem\n");
46 /* Configure some wind */
47 /* FG_V_north_airmass = 15; */ /* ft/s =~ 10mph */
49 w->visibility = 45000.0; /* in meters */
53 /* Update the weather parameters for the current position */
54 void fgWeatherUpdate( void ) {
56 /* temporarily remove the code of this do-nothing routine */
58 #ifdef FG_WEATHER_UPDATE
62 f = current_aircraft.flight;
65 /* Add some random turbulence */
66 /* FG_U_gust = fg_random() * 1.0 - 0.5;
67 FG_V_gust = fg_random() * 1.0 - 0.5;
68 FG_W_gust = fg_random() * 1.0 - 0.5; */
69 #endif FG_WEATHER_UPDATE
74 /* Revision 1.15 1998/04/25 22:06:34 curt
75 /* Edited cvs log messages in source files ... bad bad bad!
77 * Revision 1.14 1998/02/09 15:07:54 curt
80 * Revision 1.13 1998/01/27 00:48:08 curt
81 * Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
82 * system and commandline/config file processing code.
84 * Revision 1.12 1998/01/19 19:27:22 curt
85 * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
86 * This should simplify things tremendously.
88 * Revision 1.11 1998/01/19 18:40:41 curt
89 * Tons of little changes to clean up the code and to remove fatal errors
90 * when building with the c++ compiler.
92 * Revision 1.10 1997/12/30 22:22:46 curt
93 * Further integration of event manager.
95 * Revision 1.9 1997/12/30 20:48:03 curt
96 * Integrated new event manager with subsystem initializations.
98 * Revision 1.8 1997/12/11 04:43:58 curt
99 * Fixed sun vector and lighting problems. I thing the moon is now lit
102 * Revision 1.7 1997/12/10 22:37:56 curt
103 * Prepended "fg" on the name of all global structures that didn't have it yet.
104 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
106 * Revision 1.6 1997/08/27 03:30:38 curt
107 * Changed naming scheme of basic shared structures.
109 * Revision 1.5 1997/08/22 21:34:42 curt
110 * Doing a bit of reorganizing and house cleaning.
112 * Revision 1.4 1997/08/02 16:23:55 curt
115 * Revision 1.3 1997/07/31 22:52:41 curt
116 * Working on redoing internal coordinate systems & scenery transformations.
118 * Revision 1.2 1997/07/30 16:12:44 curt
119 * Moved fg_random routines from Util/ to Math/
121 * Revision 1.1 1997/07/19 23:03:57 curt