[Lua][Question] Sphere & dome biulder auto continue after crash/restart

Sphere &amp; dome builder this script is very nice and enable allot of potential but i need it to pick up work from the last spot it was, because i had several crashes/restarts which make it impossible to complete a big sphere an hadto clear it with a filler 2 times already >_<
[indent=1]So if anyone got a link/script to a modified version or atleast a similar script/tutorial about how to implement this and i'll do the editing[/indent]

I don't know about the other "pros" but wouldn't a vector suffice?:

local function forward()
turtle.forward()
pos = vector.new(gps.locate())
end

Of course, you will need a gps tower with this method. You could have a variable that tracks the turtle's movement. The user would have to input the turtle's coordinates in this case.