Branch Miner

print("place a single torch in slot 15 and a stack of torches in slot 16")


--Length of the 3x3 hall
print("How long should the Hall be?")
local hallLength = tonumber(io.read())
--Length of each tunnel
print("How long should each side tunnel be?")
local tunnelLength = tonumber(io.read())

-- How far apart torches are placed
local torchSpacing = 6

function strip()
  if turtle.detect() then
    repeat turtle.dig() until turtle.forward()
  else
    repeat until turtle.forward()
  end
  if turtle.detectDown() then turtle.digDown() end
  while turtle.detectUp() do
    turtle.digUp()
    sleep(0.5)
  end
end

function layer()
  strip()
  turtle.turnLeft()
  strip()
  turtle.turnLeft()
  turtle.turnLeft()
  repeat until turtle.forward()
  strip()
  turtle.back()
  turtle.turnLeft()
end

function refuel(min)
  if turtle.getFuelLevel()<min then
    print("Refuelling...")
    shell.run("refuel","all")
  end
  if turtle.getFuelLevel()<min then
    print("Not enough fuel to continue")
    return
  end
end

function placeTorch()
  turtle.select(16)
  if turtle.compareTo(15) then
    turtle.placeDown()
  end
end

function checkTorch(progress)
  if (progress % torchSpacing == 0) and (progress>1) then
    placeTorch()
  end
end

function tunnel(length)
  for i=1,length do
    strip()
    checkTorch(i-1)
  end
end
function hall(length)
  for i=1,length do
    layer()
    checkTorch(i)
  end
end

function minesection()
  local sections = math.floor(hallLength/6)
  for i=1,sections do
    hall(6)
    for i=1,5 do
      repeat until turtle.back()
    end
    turtle.turnLeft()
    repeat until turtle.forward()
    tunnel(tunnelLength)
    turtle.turnRight()
    tunnel(5)
    turtle.back()
    turtle.back()
    placeTorch()
    turtle.turnRight()
    tunnel(tunnelLength)
    for i=1,2 do
      repeat until turtle.forward()
    end
    tunnel(tunnelLength)
    turtle.turnRight()
    tunnel(5)
    turtle.back()
    turtle.back()
    placeTorch()
    turtle.turnRight()
    tunnel(tunnelLength)
    repeat until turtle.forward()
    turtle.turnRight()
    for i=1,5 do
      repeat until turtle.forward()
    end
  end
end
minesection()