shaver (cc turtle script)

local args={...}

local dist = tonumber(args[1]) or 16
local width = tonumber(args[2]) or 16

if dist*width*1.2<turtle.getFuelLevel() then
    print("more fuel required")
    return
end

local turn={[0]=turtle.turnLeft, [1]=turtle.turnRight}


for i=1,width do
    turtle.digDown()
    for j=1,dist-1 do
        while turtle.detect() do
          turtle.up()
        end
        turtle.forward()
        turtle.digDown()
    end
    if i<width then
        turn[i%2]()
        turtle.forward()
        turn[i%2]()
    end
end

--return to start
turtle.back(dist-1)
turtle.turnLeft()
turtle.back(width-1)
turtle.turnRight()