diff --git a/OdeWorld.cc b/OdeWorld.cc
index 8df3772..fe0c5a6 100644
--- a/OdeWorld.cc
+++ b/OdeWorld.cc
@@ -118,6 +118,60 @@ OdeWorld::Object::Object(bool is_static, dWorldID world, dSpaceID space)
     m_body = 0;
 }
 
+OdeWorld::Object::Object(const OdeWorld::Object & orig)
+{
+    m_is_static = orig.m_is_static;
+    m_world = orig.m_world;
+    m_space = orig.m_space;
+    /* make a copy of the ODE body */
+    if (orig.m_body != 0)
+    {
+        m_body = dBodyCreate(m_world);
+        dMass mass;
+        dBodyGetMass(orig.m_body, &mass);
+        dBodySetMass(m_body, &mass);
+        const dReal * pos = dBodyGetPosition(orig.m_body);
+        dBodySetPosition(m_body, pos[0], pos[1], pos[2]);
+        const dReal * rot = dBodyGetRotation(orig.m_body);
+        dBodySetRotation(m_body, rot);
+    }
+    else
+    {
+        m_body = 0;
+    }
+    /* make a copy of the ODE geoms */
+    for (int i = 0, sz = orig.m_geoms.size(); i < sz; i++)
+    {
+        m_geoms.push_back(cloneGeom(orig.m_geoms[i], m_body));
+    }
+}
+
+dGeomID OdeWorld::Object::cloneGeom(dGeomID geom, dBodyID body)
+{
+    /* TODO: clone the geom */
+    switch (dGeomGetClass(geom))
+    {
+        case dSphereClass:
+            break;
+        case dBoxClass:
+            break;
+        case dCCylinderClass:
+            break;
+        case dCylinderClass:
+            break;
+        case dPlaneClass:
+            break;
+        case dGeomTransformClass:
+            break;
+        case dRayClass:
+        case dTriMeshClass:
+        case dSimpleSpaceClass:
+        case dHashSpaceClass:
+            /* unsupported for cloning */
+            break;
+    }
+}
+
 void OdeWorld::Object::setPosition(double x, double y, double z)
 {
     if (m_is_static)
diff --git a/OdeWorld.h b/OdeWorld.h
index 1a9acb3..43b3f7a 100644
--- a/OdeWorld.h
+++ b/OdeWorld.h
@@ -17,6 +17,7 @@ class OdeWorld
         {
             public:
                 Object(bool is_static, dWorldID world, dSpaceID space);
+                Object(const Object & orig);
 
                 void loadPhy(const std::string & path);
                 void setPosition(double x, double y, double z);
@@ -41,7 +42,7 @@ class OdeWorld
                 void setupGeom(dGeomID geom, dMass * mass,
                         float locx, float locy, float locz,
                         float rotx, float roty, float rotz);
-
+                dGeomID cloneGeom(dGeomID geom, dBodyID body);
         };
 
         Object * createObject(bool is_static);