Don't adjust vertical offset for phyiscial objects

src/karts/kart_rewinder.cpp

@@ -56,6 +56,7 @@ void KartRewinder::reset()
     Rewinder::reset();
     SmoothNetworkBody::setEnable(true);
     SmoothNetworkBody::setSmoothRotation(true);
+    SmoothNetworkBody::setAdjustVerticalOffset(true);
 }   // reset
 
 // ----------------------------------------------------------------------------

src/network/smooth_network_body.cpp

@@ -159,7 +159,7 @@ void SmoothNetworkBody::updateSmoothedGraphics(
     m_smoothed_transform.setOrigin(cur_xyz);
     m_smoothed_transform.setRotation(cur_rot);
 
-    if (m_smoothing != SS_NONE)
+    if (m_adjust_vertical_offset && m_smoothing != SS_NONE)
     {
         Vec3 lc = current_transform.inverse()(cur_xyz);
         // Adjust vertical position for up/down-sloping

src/network/smooth_network_body.hpp

@@ -56,12 +56,15 @@ private:
 
     bool m_smooth_rotation;
 
+    bool m_adjust_vertical_offset;
+
 public:
     SmoothNetworkBody(bool enable = false)
     {
         reset();
         m_enabled = enable;
         m_smooth_rotation = true;
+        m_adjust_vertical_offset = true;
     }
     // ------------------------------------------------------------------------
     void reset()
@@ -79,6 +82,8 @@ public:
     // ------------------------------------------------------------------------
     void setSmoothRotation(bool val)               { m_smooth_rotation = val; }
     // ------------------------------------------------------------------------
+    void setAdjustVerticalOffset(bool val)  { m_adjust_vertical_offset = val; }
+    // ------------------------------------------------------------------------
     void prepareSmoothing(const btTransform& current_transform,
                           const Vec3& current_velocity);
     // ------------------------------------------------------------------------

src/physics/physical_object.cpp

@@ -790,6 +790,7 @@ void PhysicalObject::addForRewind()
 {
     SmoothNetworkBody::setEnable(true);
     SmoothNetworkBody::setSmoothRotation(false);
+    SmoothNetworkBody::setAdjustVerticalOffset(false);
     Rewinder::setUniqueIdentity(std::string("P") + StringUtils::toString
         (Track::getCurrentTrack()->getPhysicalObjectUID()));
     Rewinder::add();