baleTunnel

-- baleTunnel length tunnels gap
--
-- OOOOOOOOOOOOOOO
--   C    C    C
--   T    t    t
-- OXXXOOXXXOOXXXO
-- OXXXOOXXXOOXXXO
-- OXXXOOXXXOOXXXO
-- ---
-- O - Unmined block
-- C - Chest
-- T - Turtle starting point
-- t - Turtle starting points of subsequent tunnels beyond the first
-- X - Desgnated for mining
-- ---
-- The concept behind this is to have the turtle do the lion's share of mining and to manually spot
-- check the unmined blocks that are remaining.  A very effective method is to work in tandem with two
-- turtles in the following manner:
--
-- OXXXOOXXXOOXXXO
-- OXXXOOXXXOOXXXO
-- OXXXOOXXXOOXXXO
--   t    t    T
--   C    C    C
--   T    t    t
-- OXXXOOXXXOOXXXO
-- OXXXOOXXXOOXXXO
-- OXXXOOXXXOOXXXO
-- ---
-- Two directions are mined at the same time while you mine along with them, cleaning the floors,
-- ceilings, and walls in between.


local tArgs = { ... }
length = tonumber(tArgs[1]) or 24
tunnels = tonumber(tArgs[2]) or 1
gap = tonumber(tArgs[3]) or 2

gap = gap + 3 -- takes into account tunnel width

counter = 0

function betterDig()
  success = false
  while turtle.detect() do
    if turtle.dig() then
      success = true
      counter = counter + 1
    elseif turtle.attack() then
    else
      return success
    end
    -- waits for falling blocks
    sleep(.5)
  end
  return success
end

function betterDigUp()
  success = false
  while turtle.detectUp() do
    if turtle.digUp() then
      success = true
      counter = counter + 1
    elseif turtle.attackUp() then
    else
      return success
    end
    -- waits for falling blocks
    sleep(.5)
  end
  return success
end

function digLeftRight()
  turtle.turnLeft()
  betterDig()
  turtle.turnRight()
  turtle.turnRight()
  betterDig()
  turtle.turnLeft()
end

function digForward()
  betterDig()
  turtle.forward()
end

function digUp()
  betterDigUp()
  turtle.up()
end

function returnHome()
  turtle.turnLeft()
  turtle.turnLeft()
  for i = 1,length do
    turtle.forward()
  end
end

function placeTorch()
    turtle.select(16)
    turtle.turnRight()
    turtle.place()
    turtle.turnLeft()
    turtle.select(1)
end

for t = 1,tunnels do
  for i = 1,length do
    digForward()
    digUp()
    digUp()
    digLeftRight()
    turtle.down()
    digLeftRight()
    turtle.down()
    digLeftRight()

    if i%8 == 0 then
      placeTorch()
    end
  end

  returnHome()

  for i = 1,15 do
    if turtle.getItemCount(i) > 0 then
      turtle.select(i)
      turtle.drop()
    end
  end

  if t < tunnels then
    turtle.turnRight()
    for i = 1,gap do
      digForward()
    end
    turtle.turnRight()
  end
end

print("Job's done.")
print(counter .. " total blocks mined.")