Let me explain how to set up a loop further with some screen shots. A very simply loop would look like this on the left. This loop isn’t very helpful because nowhere along the path do the pieces pass in front of a gun. But it does show what a loop is… The pieces will keep going round and round the loop in a clockwise circle. Notice that the arrows are needed in the upper left corner and the lower right corner. The other two corners don’t need an arrow because when the pieces hit the walls they are already going to turn clockwise.
