CC Mine

--Put 1 Gravel in slot 1
--Put an ender chest in slot 2
--Put torches in slot 15
--Put fuel in slot 16

--When you start the program put in the lenght of each shaft and how many shafts you want.
--And it checks for gravel so it doesn't screw up the shafts


 local newDistQ = 0


local lenght = 0
local quest = 0
local mineL = 0
local shafts = 0
local shaftsQ = 0
local newDist = 0

function fuel()
  if turtle.getFuelLevel() <= 10 then
    turtle.select(16)
    turtle.refuel(1)
  end
end

function clear()
  term.clear()
  term.setCursorPos(1,1)
end

function start()
  clear()
  print("Lenght of each shaft?")
  quest = tonumber(read())
  if quest>50 then --This is because the inventory size
    print("Not more than 50")
    quest = tonumber(read())
  end
  clear()
  print("Number of shafts?")
  print("Only put 2,4,6,8 etc")
  shaftsQ = tonumber(read())
  clear()
  print("Lenght between shafts?")
  newDistQ = tonumber(read())
  mine()

end

function isGravel()
  turtle.select(1)
  while turtle.compare() == true do
    turtle.dig()
    sleep(1)
  end
  while turtle.compareUp() == true do
    turtle.digUp()
    sleep(1)
  end
end

function newMine()
  print("newMine()")
  newDist = 0
  mineL = mineL + 1
  if mineL%2==0 then
    turtle.turnRight()
    else do
    turtle.turnLeft()
    end
  end
  while newDist ~= newDistQ do
    isGravel()
    turtle.dig()
    isGravel()
    turtle.forward()
    newDist = newDist + 1
    isGravel()
    turtle.digDown()
    turtle.digUp()
  end
  if newDist == newDistQ and mineL%2==0 then
    turtle.turnRight()
    mine()
  end
  if newDist == newDistQ then
    turtle.turnLeft()
    mine()
  end
end

function chestDrop()
  shafts = shafts + 1
  turtle.turnLeft()
  turtle.turnLeft()
  turtle.select(2)
  turtle.place()
  for i=3,14 do
    turtle.select(i)
    turtle.drop()
  end
  turtle.select(2)
  turtle.dig()
  turtle.turnLeft()
  turtle.turnLeft()
  if shafts == shaftsQ then
    os.reboot()
  end
  newMine()
end

function mine()
  lenght = 0
  while lenght ~= quest do
    fuel()
    isGravel()
    turtle.dig()
    isGravel()
    turtle.forward()
    lenght = lenght + 1
    isGravel()
    turtle.digUp()
    turtle.digDown()
    if lenght%10==0 then
      turtle.select(15)
      turtle.placeDown()
    end
    if lenght == quest then
      chestDrop()
    end
  end
end


-- ( Main Stuff ) --

turtle.up()
start()