chunkbuilder.lua

s=1
print("Enter length: ")
length=read()
print("Enter width: ")
width=read()
function check()
    if turtle.getItemCount(s)==0 then
         s=s+1
         turtle.select(s)
     end
end
for a=1,width,1 do

    for x=1,length,1 do
        turtle.forward()
        turtle.placeDown()
        check()
    end
    if (a%2 == 0) then
        turtle.turnLeft()
        turtle.forward()
        turtle.placeDown()
        check()
        turtle.turnLeft()
    else
        turtle.turnRight()
        turtle.forward()
        turtle.placeDown()
        check()
        turtle.turnRight()

    end
end