Fixed 3122615: acid lake in xr591 did not trigger rescue (the lake mesh

had a rotation applied. Due to this bug an incorrect rotation was applied
to the mesh, resulting in the wrong bullet mesh, so that the collision 
was not detected).


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@6818 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/tracks/track.cpp

@@ -398,7 +398,11 @@ void Track::convertTrackToBullet(scene::ISceneNode *node)
     core::matrix4 mat;
     mat.setRotationDegrees(hpr);
     mat.setTranslation(pos);
-    mat.setScale(scale);
+    core::matrix4 mat_scale;
+    // Note that we can't simply call mat.setScale, since this would
+    // overwrite the elements on the diagonal, making any rotation incorrect.
+    mat_scale.setScale(scale);
+    mat *= mat_scale;
     for(unsigned int i=0; i<mesh->getMeshBufferCount(); i++) {
         scene::IMeshBuffer *mb = mesh->getMeshBuffer(i);
         // FIXME: take translation/rotation into account