stripmine

function getvar(text)
  term.clear()
  term.setCursorPos(1,1)
  print(text)
  var = read()
  return var
end

function printpos(text)
  term.clear()
  term.setCursorPos(1,1)
  print(text)
end


function check()
    nope = false
    for i=1,3 do
      turtle.select(i)
      if turtle.compare() then
        nope = true
      end
      if i==3 and nope == false then
        turtle.dig()
      end
    end
end



torch = getvar("use torches? y/n")
if torch == "y" then
  everyblocks = tonumber(getvar("place torch every how many blocks?"))
else
  everyblocks = 1
end
looksides = getvar("look for ore on sides? y/n")
finish = tonumber(getvar("How far to dig?"))

pos = 0

repeat
for p=1, everyblocks do
  if pos < finish then
  turtle.dig()
  turtle.forward()
  turtle.digDown()
  if looksides == "y" then
    turtle.turnRight()
    check()
    turtle.turnRight()
    turtle.turnRight()
    check()
    turtle.turnRight()
  end
  if p == everyblocks and torch == "y" then
    turtle.select(16)
    turtle.placeDown()
  end
pos = pos+1
end
end
until pos >= finish
turtle.turnRight()
turtle.turnRight()
for i=1, finish do
  turtle.forward()
end

for i=4, 15 do
  turtle.select(i)
  turtle.dropDown()
end
turtle.turnLeft()
for i=1, 3 do
  turtle.dig()
turtle.forward()
turtle.digDown()
end
turtle.turnLeft()
os.reboot()