From d47eefb00ce5b6fcd3a4a8320a4ccfda070ff35f Mon Sep 17 00:00:00 2001
From: andy <andy>
Date: Fri, 10 Mar 2006 19:47:23 +0000
Subject: [PATCH] Fix an uninitialized data condition that crept in during the
 recent groundcache addition -- the ground callback doesn't do anything at
 solution time, so the ground plane was unset.  Valgrind was whining about
 this; it's not clear that it was actually causing a problem.

---
 src/FDM/YASim/Airplane.cpp | 11 ++++++-----
 src/FDM/YASim/Model.cpp    |  8 ++++++++
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/src/FDM/YASim/Airplane.cpp b/src/FDM/YASim/Airplane.cpp
index df9dfbe60..e9763673e 100644
--- a/src/FDM/YASim/Airplane.cpp
+++ b/src/FDM/YASim/Airplane.cpp
@@ -677,11 +677,12 @@ void Airplane::compile()
     }
 
     // Ground effect
-    float gepos[3];
-    float gespan = 0;
-    if(_wing)
-      gespan = _wing->getGroundEffect(gepos);
-    _model.setGroundEffect(gepos, gespan, 0.15f);
+    if(_wing) {
+        float gepos[3];
+        float gespan = 0;
+        gespan = _wing->getGroundEffect(gepos);
+        _model.setGroundEffect(gepos, gespan, 0.15f);
+    }
 
     solveGear();
     if(_wing && _tail) solve();
diff --git a/src/FDM/YASim/Model.cpp b/src/FDM/YASim/Model.cpp
index ece48823d..e38de2515 100644
--- a/src/FDM/YASim/Model.cpp
+++ b/src/FDM/YASim/Model.cpp
@@ -60,6 +60,14 @@ Model::Model()
     _ground_cb = new Ground();
     _hook = 0;
     _launchbar = 0;
+
+    _groundEffectSpan = 0;
+    _groundEffect = 0;
+    for(i=0; i<3; i++) _wingCenter[i] = 0;
+
+    _global_ground[0] = 0; _global_ground[1] = 0; _global_ground[2] = 1;
+    _global_ground[3] = -100000;
+
 }
 
 Model::~Model()