void look_at(ENTITY* Vehicle, VECTOR* Destination, ENTITY* Planet)
{
   VECTOR V_Nrml;
   ANGLE V_Ang;
   VECTOR V_Path;

   // copy my angle
   vec_set(V_Ang, Vehicle.pan);
	
   //get our vehicle's normal from the planet core
   vec_diff(V_Nrml, Vehicle.x, Planet.x);

   // orientate temporary angle as if on a perfect sphere
   alignToVec(V_Ang, V_Nrml, vector(0, 0, 1), 1);

   // get destination position relative to the vehicle's orientation
   vec_diff(V_Path, Destination, Vehicle.x);
   vec_rotateback(V_Path, V_Ang);

   // convert to an angle
   vec_to_angle(V_Ang, V_Path);

   // now, V_Ang's pan is our angle
   ang_rotate(Vehicle.pan, vector(V_Ang.pan, 0, 0)); // maybe ang_add?
}