universal floor breaker

local turnLeft=true;
local failCount=0;
local breakFloor=true;
local sel=0;
print("floor/ceiling breaker by Niseg")
print("refuel the turtle put it in a  a corner facing out")
repeat
print("break the (1) ceiling ")
print("break the (2) floor")
sel=tonumber(read())
until sel==1 or sel==2


if(sel==1) then breakFloor=false end

repeat
print("empty side on (1) right ")
print("empty side on (2) left")

sel=tonumber(read())
until sel==1 or sel==2

if(sel==1) then turnLeft=false end

while true do
if breakFloor then
	if	turtle.detectDown() then
		turtle.digDown()
	end
--if not breakFloor then
else
	if turtle.detectUp() then
		turtle.digUp()
	end
end
	if(not turtle.forward())  then
		if(turnLeft) then turtle.turnLeft()  else turtle.turnRight() end

		if not turtle.forward() then break end
		if(turnLeft) then turtle.turnLeft()  else turtle.turnRight() end
		turnLeft = not turnLeft;

	end
end
print("done")