Melchior FRANZ:

[flightgear.git] / src / Main / util.cxx

diff --git a/src/Main/util.cxx b/src/Main/util.cxx
index 308ac756ab645cae078edfb6ed8fefb2df906e0d..ca3231206db146073d6ebc257c9bfeafaf3ae714 100644 (file)
--- a/src/Main/util.cxx
+++ b/src/Main/util.cxx
@@ -1,5 +1,5 @@
 // util.cxx - general-purpose utility functions.
-// Copyright (C) 2002  Curtis L. Olson  - curt@me.umn.edu
+// Copyright (C) 2002  Curtis L. Olson  - http://www.flightgear.org/~curt
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License as
@@ -52,6 +52,55 @@ fgDefaultWeatherValue (const char * propname, double value)
 }
 
 
+void
+fgSetupWind (double min_hdg, double max_hdg, double speed, double gust)
+{
+                                // Initialize to a reasonable state
+  fgDefaultWeatherValue("wind-from-heading-deg", min_hdg);
+  fgDefaultWeatherValue("wind-speed-kt", speed);
+
+  SG_LOG(SG_GENERAL, SG_INFO, "WIND: " << min_hdg << '@' <<
+         speed << " knots" << endl);
+
+                                // Now, add some variety to the layers
+  min_hdg += 10;
+  if (min_hdg > 360)
+      min_hdg -= 360;
+  speed *= 1.1;
+  fgSetDouble("/environment/config/boundary/entry[1]/wind-from-heading-deg",
+              min_hdg);
+  fgSetDouble("/environment/config/boundary/entry[1]/wind-speed-kt",
+              speed);
+
+  min_hdg += 20;
+  if (min_hdg > 360)
+      min_hdg -= 360;
+  speed *= 1.1;
+  fgSetDouble("/environment/config/aloft/entry[0]/wind-from-heading-deg",
+              min_hdg);
+  fgSetDouble("/environment/config/aloft/entry[0]/wind-speed-kt",
+              speed);
+
+  min_hdg += 10;
+  if (min_hdg > 360)
+      min_hdg -= 360;
+  speed *= 1.1;
+  fgSetDouble("/environment/config/aloft/entry[1]/wind-from-heading-deg",
+              min_hdg);
+  fgSetDouble("/environment/config/aloft/entry[1]/wind-speed-kt",
+              speed);
+
+  min_hdg += 10;
+  if (min_hdg > 360)
+      min_hdg -= 360;
+  speed *= 1.1;
+  fgSetDouble("/environment/config/aloft/entry[2]/wind-from-heading-deg",
+              min_hdg);
+  fgSetDouble("/environment/config/aloft/entry[2]/wind-speed-kt",
+              speed);
+}
+
+
 void
 fgExit (int status)
 {