Mine 7.0

----------------Save And Load---------------

local save = function(data, name)
  if not fs.exists('/data') then
    fs.makeDir('/data')
  end
  local file = fs.open('/data/'..name, 'w')
  file.write(textutils.serialize(data))
  file.close()
end

local load = function(name)
  if fs.exists('/data/'..name) then
    local file = fs.open('/data/'..name, 'r')
    data = textutils.unserialize(file.readAll())
    file.close()
  end
  return data
end

--------------------------------------------

local tArgs = {...}

local length
local height
local width

if not fs.exists('/data/mineSize') then
  if #tArgs ~= 3 then
    print("Required Length, Height and Width")
    return
  end

  length = tonumber(tArgs[1])
  height = tonumber(tArgs[2])
  width =  tonumber(tArgs[3])
else
  savedData = load('mineSize')
  continueFromLast = true

  length = tonumber(savedData[1])
  height = tonumber(savedData[2])
  width = tonumber(savedData[3])
end



local currentDirectionFacing
local lastKnownDirectionFacing

local currentXValue
local currentYValue
local currentZValue

local lastKnownXValue
local lastKnownYValue
local lastKnownZValue

local minXValue
local minYValue
local minZValue

local maxXValue
local maxYValue
local maxZValue

if length == nil or height == nil or width == nil then
  print("Invalid Dimensions")
  return
end

if length < 3 or height < 3 or width < 3 then
  if width < 3 then
    print("Length must be 3 or more")
  end
  if height < 3 then
    print("Height must be 3 or more")
  end
  if length < 3 then
    print("Width must be 3 or more")
  end

  return
end

if width % 2 == 0 then
  print("Width must be an odd number")
  return
end

if height % 2 == 0 then
  print("Current Bug Detected:")
  print("Height set to Even Number")
  print("The turtle will return after the Second Last Layer")
end

---------------Misc Functions---------------
--22.03

local calcDirection = function(d)
  if d > 3 then
    d = 0
  end
  if d < 0 then
    d = 3
  end
  return d
end

local updateVariable = function(x, y, z, d)
  if x ~= nil and x ~= 0 then
    currentXValue = currentXValue+x
  end
  if y ~= nil and y ~= 0 then
    currentYValue = currentYValue+y
  end
  if z ~= nil and z ~= 0 then
    currentZValue = currentZValue+z
  end
  if d ~= nil then
    currentDirectionFacing = calcDirection(currentDirectionFacing+d)
  end

  save({currentXValue,currentYValue,currentZValue,currentDirectionFacing},"currentLocation")

end

local dig = function(digFront, digTop, digBottom)

  if digFront ~= false then
    turtle.dig()
  end

  if digTop ~= false then
    turtle.digUp()
  end

  if digBottom ~= false then
    turtle.digDown()
  end

end

local inventoryCheck = function()
  if turtle.getItemCount(16) >= 1 then
    return true
  else
    return false
  end
end

local refuelCheck = function()
  while turtle.getFuelLevel() <= 1 do
    turtle.select(1)
    turtle.refuel(1)
  end
end

local emptyInventory = function()
  for i = 2, 16 do
    turtle.select(i)
    turtle.drop()
  end
  turtle.select(1)
end

--------------------------------------------




------------------Movement------------------

-- Moving

local forwardX = function(digFront, digTop, digBottom)
  refuelCheck()
  local continueLoop = false
  while continueLoop == false do
    while turtle.detect() == true do
      dig(digFront, digTop, digBottom)
    end
    continueLoop = turtle.forward()
  end
  updateVariable(1,0,0)
end

local backX = function(digFront, digTop, digBottom)
  refuelCheck()
  local continueLoop = false
  while continueLoop == false do
    while turtle.detect() == true do
      dig(digFront, digTop, digBottom)
    end
    continueLoop = turtle.forward()
  end
  updateVariable(-1,0,0)
end

local forwardZ = function(digFront, digTop, digBottom)
  refuelCheck()
  local continueLoop = false
  while continueLoop == false do
    while turtle.detect() == true do
      dig(digFront, digTop, digBottom)
    end
    continueLoop = turtle.forward()
  end
  updateVariable(0,0,1)
end

local backZ = function(digFront, digTop, digBottom)
  refuelCheck()
  local continueLoop = false
  while continueLoop == false do
    while turtle.detect() == true do
      dig(digFront, digTop, digBottom)
    end
    continueLoop = turtle.forward()
  end
  updateVariable(0,0,-1)
end

local up = function(digFront, digTop, digBottom)
  refuelCheck()
  local continueLoop = false
  while continueLoop == false do
    while turtle.detectUp() == true do
      dig(digFront, digTop, digBottom)
    end
    continueLoop = turtle.up()
  end
  updateVariable(0,1,0)
end

local down = function(digFront, digTop, digBottom)
  refuelCheck()
  local continueLoop = false
  while continueLoop == false do
    while turtle.detectDown() == true do
      dig(digFront, digTop, digBottom)
    end
    continueLoop = turtle.down()
  end
  updateVariable(0,-1,0)
end

local moveToCenterX = function()
  while currentXValue ~= maxXValue/2 do
    if currentDirectionFacing == 1 then
      forwardX()
    elseif currentDirectionFacing == 3 then
      backX()
    end
  end
end

local moveToMaxY = function()
  while currentYValue ~= maxYValue do
    up()
  end
end

local moveToMinX = function()
  while currentXValue ~= minXValue do
    backX()
  end
end

local moveToMinZ = function()
  while currentZValue ~= minZValue do
    backZ()
  end
end

local moveToLastZ = function()
  while currentZValue ~= lastKnownZValue do
    if currentZValue < lastKnownZValue then
      forwardZ()
    else
      backZ()
    end
  end
end

local moveToLastX = function()
  while currentXValue ~= lastKnownXValue do
    if currentXValue < lastKnownXValue then
      forwardX()
    else
      backX()
    end
  end
end

local moveToLastY = function()
  while currentYValue ~= lastKnownYValue do
    if currentYValue > lastKnownYValue then
      down()
    elseif currentYValue < lastKnownYValue then
      up()
    end
  end
end

-- Turning

local left = function()
  turtle.turnLeft()
  updateVariable(0,0,0,-1)
end

local right = function()
  turtle.turnRight()
  updateVariable(0,0,0,1)
end

local turnToCenterX = function()
  if currentXValue > maxXValue/2 then
    while currentDirectionFacing ~= 3 do
      left()
    end
  else
    while currentDirectionFacing ~= 1 do
      right()
    end
  end
end

local turnToMinX = function()
  while currentDirectionFacing ~= 3 do
    if currentDirectionFacing == 0 then
      left()
    else
      right()
    end
  end
end

local turnToMaxX = function()
  while currentDirectionFacing ~= 1 do
    if currentDirectionFacing == 2 then
      left()
    else
      right()
    end
  end
end

local turnToMinZ = function()
  while currentDirectionFacing ~= 2 do
    if currentDirectionFacing == 3 then
      left()
    else
      right()
    end
  end
end

local turnToMaxZ = function()
  while currentDirectionFacing ~= 0 do
    if currentDirectionFacing == 1 then
      left()
    else
      right()
    end
  end
end

local turnToLastX = function()
  if currentXValue > lastKnownXValue then
    turnToMinX()
  elseif currentXValue < lastKnownXValue then
    turnToMaxX()
  end
end

local turnToLastDirection = function()
  while currentDirectionFacing ~= lastKnownDirectionFacing do
    left()
  end
end

--------------------------------------------





----------------GPS Function----------------

local locateLastPosition = function()
  savedLocation = load('currentLocation')

  minXValue = 0
  minYValue = 1
  minZValue = 0

  maxXValue = width-1
  maxYValue = height
  maxZValue = length-1

  currentXValue = tonumber(savedLocation[1])
  currentYValue = tonumber(savedLocation[2])
  currentZValue = tonumber(savedLocation[3])

  lastKnownXValue = currentXValue
  lastKnownYValue = currentYValue
  lastKnownZValue = currentZValue

  currentDirectionFacing = tonumber(savedLocation[4])
  lastKnownDirectionFacing = currentDirectionFacing

end

local locateInitialPosition = function()

  minXValue = 0
  minYValue = 1
  minZValue = 0

  maxXValue = width-1
  maxYValue = height
  maxZValue = length-1

  currentXValue = maxXValue/2
  currentYValue = maxYValue
  currentZValue = minZValue

  lastKnownXValue = currentXValue
  lastKnownYValue = currentYValue
  lastKnownZValue = currentZValue

  currentDirectionFacing = 0

end

--------------------------------------------


--------------Return Functions--------------

local returnToFirstCorner = function()

  turnToMinZ()
  moveToMinZ()

  turnToMinX()
  moveToMinX()

end

local returnToLastPosition = function()

  turnToMaxZ()
  moveToLastZ()

  turnToLastX()
  moveToLastX()

  moveToLastY()

  turnToLastDirection()

end

local returnToChest = function()

  lastKnownDirectionFacing = currentDirectionFacing
  lastKnownXValue = currentXValue
  lastKnownYValue = currentYValue
  lastKnownZValue = currentZValue

  moveToMaxY()

  turnToCenterX()
  moveToCenterX()

  turnToMinZ()
  moveToMinZ()

  emptyInventory()

end


--------------------------------------------


----------------Mine Function---------------

local mineStripForwardZ = function()
  turnToMaxZ()
  while currentZValue ~= maxZValue do
    if inventoryCheck() == true then
      returnToChest()
      returnToLastPosition()
    end
    dig()
    forwardZ()
  end
end

local mineStripBackZ = function()
  turnToMinZ()
  while currentZValue ~= minZValue do
    if inventoryCheck() == true then
      returnToChest()
      returnToLastPosition()
    end
    dig()
    backZ()
  end
end

local nextStrip = function()
  turnToMaxX()
  dig()
  forwardX()
end

local nextLayer = function()
  local currentYValueClone = currentYValue
  if currentYValue == minYValue+1 then
    down(false,false,false)
  elseif currentYValue-2 <= minYValue then
    while currentYValue ~= minYValue+1 do
      down(false,false,true)
    end
  else
    while currentYValue ~= currentYValueClone-2 do
      down(false,true,true)
    end
  end
end

--------------------------------------------


----------------Main Function---------------


local mineLayerHandler = function()

  save({length,height,width},"mineSize")

  turnToMinX()
  moveToMinX()

  while currentYValue ~= minYValue+1 do
    while currentXValue < maxXValue do
      mineStripForwardZ()
      nextStrip()
      mineStripBackZ()
      nextStrip()
    end
    if currentXValue == maxXValue then
      mineStripForwardZ()
      turtle.digUp()
      turtle.digDown()
    end
    returnToFirstCorner()
    nextLayer()
  end
  returnToChest()
  right()
  right()
  fs.delete("/data/mineSize")
  fs.delete("/data/currentLocation")
end

-- turning to max z
-- moving to max z
-- turning to max x
-- moving forward one
-- turning to min z
-- continuing mining

local mineLayerHandlerContinueFromLast = function()
  while currentYValue ~= minYValue+1 do
    if currentDirectionFacing == 2 then
      mineStripBackZ()
      nextStrip()
    end
    while currentXValue < maxXValue do
      mineStripForwardZ()
      nextStrip()
      mineStripBackZ()
      nextStrip()
    end
    if currentXValue == maxXValue then
      mineStripForwardZ()
      turtle.digUp()
      turtle.digDown()
    end
    returnToFirstCorner()
    nextLayer()
  end
  returnToChest()
  right()
  right()
  fs.delete("/data/mineSize")
  fs.delete("/data/currentLocation")
end

if continueFromLast ~= true then
  locateInitialPosition()
  mineLayerHandler()
else
  locateLastPosition()
  mineLayerHandlerContinueFromLast()
end




--------------------------------------------