According to this link


  WHAT IS UDK?
  
  Unreal Development Kit was the free edition of Unreal Engine 3. It remains available for teams completing projects in UE3. Get UDK (February 2015 UDK).


So you want to avoid using UDK and use Unreal Engine 4

What exactly is the difference between Unreal Development Kit and Uunreal Engine 4?
I am looking at a circuit diagram like this:







simulate this circuit &ndash; Schematic created using CircuitLab

Switch 1 and switch 2 never are on at the same time (they alternate)
I turn on S2 and shut off S1, then after a while, I turn on S1 and shut off S2. At that point I think I can redraw the circuit like this:







simulate this circuit

But if I do that, I think the current through the switch would then be zero? And then the switch would be considered "off?" Or maybe I could arbitrarily define the current through the switch as being from either the left or right hand side circuits? But that seems to be not possible because originally the switch was shared between both of the circuits.

Can someone figure out what is wrong with my reasoning? What should the current through the circuit be in the "on" position?

Note: ignore the values of the circuit elements, they are not important.
