Fix for bug 1304 - crash loading XML route

[flightgear.git] / src / FDM / YASim / Airplane.cpp

diff --git a/src/FDM/YASim/Airplane.cpp b/src/FDM/YASim/Airplane.cpp
index f63eaaa5e0e03848a2b4111e4d353e30702cbe5e..15fd4d683bb1d1acf3096425bf379ff9a59f4a6e 100644 (file)
--- a/src/FDM/YASim/Airplane.cpp
+++ b/src/FDM/YASim/Airplane.cpp
@@ -1,3 +1,7 @@
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
 #include "Atmosphere.hpp"
 #include "ControlMap.hpp"
 #include "Gear.hpp"
@@ -126,14 +130,17 @@ void Airplane::getPilotAccel(float* out)
     // Gravity
     Glue::geodUp(s->pos, out);
     Math::mul3(-9.8f, out, out);
+    Math::vmul33(s->orient, out, out);
+    out[0] = -out[0];
 
     // The regular acceleration
     float tmp[3];
-    Math::mul3(-1, s->acc, tmp);
-    Math::add3(tmp, out, out);
-
     // Convert to aircraft coordinates
-    Math::vmul33(s->orient, out, out);
+    Math::vmul33(s->orient, s->acc, tmp);
+    tmp[1] = -tmp[1];
+    tmp[2] = -tmp[2];
+
+    Math::add3(tmp, out, out);
 
     // FIXME: rotational & centripetal acceleration needed
 }