This solution uses global variables to preserve the current position and direction between multiple calls to i_am_here. Without using global (for example directions), you can read the variables declared at the top, but cannot re-assign them. That means you would always start your path at (0,0), and not from the last position.
This solution uses global variables to preserve the current position and direction between multiple calls to
i_am_here. Without using global (for exampledirections), you can read the variables declared at the top, but cannot re-assign them. That means you would always start your path at (0,0), and not from the last position.