restart quarry

local checkItems = {
  "minecraft:dirt",
  "minecraft:stone",
  "minecraft:gravel",
  "minecraft:chest",
  "minecraft:flowing_lava"
    }

local cDir = "north"
local cX = 0
local cY = 0
local cZ = 0
local home
local workingY
local status
local workingRow
local turns = 0
local special = "none"
local preMoveFuel

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

--saves data to file
function saveCor()
        local fileHandle = fs.open("path","w")
        fileHandle.writeLine(cX)
        fileHandle.writeLine(cY)
        fileHandle.writeLine(cZ)
        fileHandle.writeLine(cDir)
        fileHandle.writeLine(workingY)
        fileHandle.writeLine(size)
        fileHandle.writeLine(toY)
        fileHandle.writeLine(home)
        fileHandle.writeLine(status)
        fileHandle.writeLine(turns)
        fileHandle.writeLine(special)
        fileHandle.writeLine(preMoveFuel)
        fileHandle.close()
end

--deletes the file
function deleteFiles()
        fs.delete("path")
end

--overide of turtle.turnRightfucntion
function turnRight()
  if cDir == "north" then
    cDir = "east"
  elseif cDir == "east" then
    cDir = "south"
  elseif cDir == "south" then
    cDir = "west"
  elseif cDir == "west" then
    cDir = "north"
  else
    print("Error!!")
        error()
  end
  turtle.turnRight()
end

--overide of turtle.turnLeft fucntion
function turnLeft()
        if cDir == "north" then
                cDir = "west"
        elseif cDir == "east" then
                cDir = "north"
        elseif cDir == "south" then
                cDir = "east"
        elseif cDir == "west" then
                cDir = "south"
        else
                print("Error!!")
                error()
        end
        turtle.turnLeft()
end

--turns to specified direction
function turnTo(dir)
  if cDir ~= dir then
    repeat
     turnRight()
    until cDir == dir
  end
end

--overide of turtle.moveForward fucntion
function moveForward()
        local succes, data = turtle.inspect()
        if succes then
                if data.name == checkItems[4] then
                        for i = 1, 27 do
                                turtle.suck()
                        end
                end
        end
        if cDir == "north" then
                cZ = cZ-1
        elseif cDir == "east" then
                cX = cX+1
        elseif cDir == "south" then
                cZ = cZ+1
        elseif cDir == "west" then
                cX = cX-1
        else
                print("Error!!")
                error()
        end
        while turtle.detect() do
                turtle.dig()
        end
        status = "forward"
        preMoveFuel = turtle.getFuelLevel()
        saveCor()
        while not turtle.forward() do
                turtle.dig()
        end
        status = "none"
        saveCor()
end

--overide of turtle.moveUp fucntion
function moveUp()
        cY = cY+1
        while turtle.detectUp() do
                turtle.digUp()
                sleep(0.1)
        end
        status = "up"
        preMoveFuel = turtle.getFuelLevel()
        saveCor()
        while not turtle.up() do
                turtle.digUp()
        end
        status = "none"
        saveCor()
end

--overide of turtle.movedown fucntion
function moveDown()
        cY = cY-1
        while turtle.detectDown() do
                turtle.digDown()
        end
        status = "down"
        preMoveFuel = turtle.getFuelLevel()
        saveCor()
        while not turtle.down() do
                turtle.digDown()
        end
        status = "none"
        saveCor()
end

--move to specific y
function moveToX(x)
  if cX < x then
    turnTo("east")
    repeat
      moveForward()
    until cX == x
  elseif cX > x then
    turnTo("west")
    repeat
      moveForward()
    until cX == x
  else
    --print("already there")
  end
end

--move to specific z
function moveToZ(z)
  if cZ < z then
    turnTo("south")
    repeat
      moveForward()
    until cZ == z
  elseif cZ > z then
    turnTo("north")
    repeat
      moveForward()
    until cZ == z
  else
   --print("already there")
  end
end

--move to specific y
function moveToY(y)
  if cY < y then
    repeat
      moveUp()
    until cY == y
  elseif cY > y then
    repeat
      moveDown()
    until cY == y
  else
   --print("already there")
  end
end

--goes to a specific place
function goTo(x, y, z)
  moveToX(x)
  moveToY(y)
  moveToZ(z)
  turnTo("north")
end

--if there is space in his inventory
function checkInventory()
  if turtle.getItemDetail(13) == nil then
  else
    dropItems()
  end
end

--drops its items in his enderchest
function dropItems()
        special = "drop items"
        saveCor()
        turnRight()
        turnRight()
        turtle.select(16)
        while not turtle.place() do
                turtle.dig()
        end
        for i = 1, 14 do
                turtle.select(i)
                turtle.drop()
        end
        turtle.select(16)
        turtle.dig()
        turtle.select(1)
        turnRight()
        turnRight()
        special = "none"
        saveCor()
end

--Needed for checkDown()
function  lavaDown()
        local data = turtle.getItemDetail(15)
        if data.name == "minecraft:bucket" then
                turtle.select(15)
                turtle.placeDown()
                turtle.refuel()
                turtle.select(1)
        elseif data == nil then
        else
                turtle.select(15)
                turtle.placeDown()
                turtle.select(1)
        end
end

--needed for checkUp()
function  lavaUp()
        local data = turtle.getItemDetail(15)
        if data.name == "minecraft:bucket" then
                turtle.select(15)
                turtle.placeUp()
                turtle.refuel()
                turtle.select(1)
        elseif data == nil then
        else
                turtle.select(15)
                turtle.placeUp()
                turtle.select(1)
        end
end

-checks block down
function checkDown()
local succes, data = turtle.inspectDown()
  if succes then
    if data.name == checkItems[1] then
    elseif data.name == checkItems[2] then
      elseif data.name == checkItems[3] then
        elseif data.name == checkItems[4] then
          for i = 1, 27 do
            turtle.suckDown()
          end
          turtle.digDown()
                        elseif data.name == checkItems[5] then
                                lavaDown()
            else
          turtle.digDown()
      end
   end
end

--checks block up
function checkUp()
local succes, data = turtle.inspectUp()
  if succes then
    if data.name == checkItems[1] then
      elseif data.name == checkItems[2] then
          elseif data.name == checkItems[4] then
            for i = 1, 27 do
              turtle.suckUp()
            end
            turtle.digUp()
            elseif data.name== checkItems[5] then
                                lavaUp()
          else
          turtle.digUp()
       end
    end
end

--Checks the blocks above and below
function checkBlocks()
        checkUp()
        checkDown()
        checkInventory()
end

--part of square
function row()
        checkBlocks()
        for i = 1, size-1 do
                moveForward()
                checkBlocks()
        end
end

--Does one layer of mining
function square()
workingY = cY
saveCor()
print("Layer: "..workingY)
local count = 1
        for i = 1, size do
                row()
                if count ~= size then
                        if turns == 0 then
                                turnRight()
                                moveForward()
                                turnRight()
                                turns = 1
                        else
                                turnLeft()
                                moveForward()
                                turnLeft()
                                turns = 0
                        end
                        count = count+1
                end
        end
end

--goes to the next layer
function nextLayer()
  special = "Next_layer"
  saveCor()
  for i = 1,3 do
    moveUp()
  end
  turnRight()
  turnRight()
  special = "none"
  saveCor()
end

--main mining program
function Bedrock()
        square()
        while cY ~= toY do
                if cY == toY-1  then
                        break
                elseif cY == toY-2 then
                        moveUp()
                        moveUp()
                        turnRight()
                        turnRight()
                        square()
                else
                        nextLayer()
                        square()
                end
        end
end

--calculates the energy needed
function calcEnergy()
        eNeeded = size*size*(cY/3)+cY*2
end

--starting program part 1
function startProg()
        print("---------------------------------------")
        print("Advanced ore mining quarry")
        print("Made by: Cing")
        print("---------------------------------------")

        print("Please put first coal in slot 1...")
        print("a bucket or filling blocks in slot 15..")
        print("and a enderchest in slot 16.")
        print("And don't forget to chunkload the area.")
        os.pullEvent()

        while turtle.getItemDetail(16) == nil do
                print("Please put a enderchest in slot 16.")
                os.pullEvent()
        end

        write("What is the YLevel: ")
        cY = tonumber(read())
        home = cY
        workingY = 2

        write("What size do you want: ")
        size = tonumber(read())

        write("Until what Y should I dig: ")
        toY = tonumber(read())

        turtle.select(1)
        turtle.refuel()
        calcEnergy()
        while eNeeded > turtle.getFuelLevel() do
                print("Please put more coal in slot 1")
                os.pullEvent()
                turtle.refuel()
        end

        saveCor()
end

--starting program part 2
function working()
        special = "going down"
        saveCor()
        while cY ~= 2 do
                moveDown()
        end
        special = "none"
        saveCor()
        clear()
        print("Digging!")
        Bedrock()
        special = "going up"
        saveCor()
        goTo(0,home,0)
        dropItems()
        deleteFiles()
end

--check if the turtle has moved or not
function checkMove()
        sleep(1)
        if status == "forward" then
                if preMoveFuel == turtle.getFuelLevel() then
                        if cDir == "north" then
                                cZ = cZ+1
                        elseif cDir == "east" then
                                cX = cX-1
                        elseif cDir == "south" then
                                cZ = cZ-1
                        elseif cDir == "west" then
                                cX = cX+1
                        else
                                print("There went something wrong!")
                                error()
                        end
                        status = "none"
                        saveCor()
                elseif preMoveFuel == turtle.getFuelLevel()-1 then
                        status = "none"
                        saveCor()
                else
                        print("There went something wrong!")
                        error()
                end
        elseif status == "up" then
                if preMoveFuel == turtle.getFuelLevel() then
                        cY = cY-1
                        status = "none"
                        saveCor()
                elseif preMoveFuel == turtle.getFuelLevel()-1 then
                        status = "none"
                        saveCor()
                else
                        print("There went something wrong!")
                        error()
                end
        elseif status == "down" then
                if preMoveFuel == turtle.getFuelLevel() then
                        cY = cY+1
                        status = "none"
                        saveCor()
                elseif preMoveFuel == turtle.getFuelLevel()-1 then
                        status = "none"
                        saveCor()
                else
                        print("There went something wrong!")
                        error()
                end
        elseif status == "none" then
        else
                print("There went something wrong!")
                error()
        end
end


--code for resuming after shutdown
function resume()
        if cDir == "east" or cDir == "west" or special == "Next_layer" then
                goTo(0,workingY,0)
                turns = 0
        else
                if cDir == "north" then
                        while (cZ*-1)+1 ~= size do
                                moveForward()
                                checkBlocks()
                        end
                        if turns ==  0 then
                                if cX ~= size-1 then
                                        turnRight()
                                        moveForward()
                                        turnRight()
                                        turns = 1
                                end
                        else
                                turnLeft()
                                moveForward()
                                turnLeft()
                                turns = 0
                        end
                elseif cDir == "south" then
                        while cZ ~= 0 do
                                moveForward()
                                checkBlocks()
                        end
                        if turns == 1  then
                                if cX ~= size-1 then
                                        turnLeft()
                                        moveForward()
                                        turnLeft()
                                        turns = 0
                                end
                        else
                                if cX ~= 0 then
                                        turnRight()
                                        moveForward()
                                        turnLeft()
                                        turns = 1
                                end
                        end
                end
                if cDir == "north" and turns == 0 then
                        print("Layer Positief")
                        if cX+1 ~= size then
                                for i = 1, (size-(cX+1)) do
                                        row()
                                        if cX ~= size-1 then
                                                if turns == 0 then
                                                        turnRight()
                                                        moveForward()
                                                        turnRight()
                                                        turns = 1
                                                else
                                                        turnLeft()
                                                        moveForward()
                                                        turnLeft()
                                                        turns = 0
                                                end
                                        end
                                end
                                row()
                        end
                elseif cDir == "south" and turns == 1 then
                        print("Layer Positief")
                        if cX+1 ~= size then
                                for i = 1, (size-(cX+1)) do
                                        row()
                                        if cX ~= size-1 then
                                                if turns == 0 then
                                                        turnRight()
                                                        moveForward()
                                                        turnRight()
                                                        turns = 1
                                                else
                                                        turnLeft()
                                                        moveForward()
                                                        turnLeft()
                                                        turns = 0
                                                end
                                        end
                                end
                                row()
                        end
                elseif cDir == "north" and turns == 1 then
                        print("Layer Negetiaf")
                        if cX ~= 0 then
                                for i = 1, cX+1 do
                                        row()
                                        if cX ~= 0 then
                                                if turns == 0 then
                                                        turnRight()
                                                        moveForward()
                                                        turnRight()
                                                        turns = 1
                                                else
                                                        turnLeft()
                                                        moveForward()
                                                        turnLeft()
                                                        turns = 0
                                                end
                                        end
                                end
                                row()
                        end
                elseif cDir == "south" and turns == 0 then
                        print("Layer Negetiaf")
                        if cX ~= 0 then
                                for i = 1, cX+1 do
                                        row()
                                        if cX ~= 0 then
                                                if turns == 0 then
                                                        turnRight()
                                                        moveForward()
                                                        turnRight()
                                                        turns = 1
                                                else
                                                        turnLeft()
                                                        moveForward()
                                                        turnLeft()
                                                        turns = 0
                                                end
                                        end
                                end
                                row()
                        end
                else
                        print("There went something wrong!")
                        error()
                end
                if cY == toY then
                        goTo(0,cY,0)
                        turns = 0
                        saveCor()
                elseif cY == toY-1 then
                        goTo(0,cY,0)
                        turns = 0
                        saveCor()
                elseif cY == toY-2 then
                        goTo(0,(cY+2),0)
                        turns = 0
                        saveCor()
                else
                        nextLayer()
                        goTo(0,cY,0)
                        turns = 0
                        saveCor()
                end
        end
end

--Main program
if fs.exists("path") then
        local file = fs.open("path","r")
                cX = tonumber(file.readLine())
                cY = tonumber(file.readLine())
                cZ = tonumber(file.readLine())
                cDir = file.readLine()
                workingY = tonumber(file.readLine())
                size = tonumber(file.readLine())
                toY = tonumber(file.readLine())
                home =  tonumber(file.readLine())
                status = file.readLine()
                turns = tonumber(file.readLine())
                special = file.readLine()
                preMoveFuel = tonumber(file.readLine())
        file.close()

        checkMove()

        if special == "drop items" then
                if turtle.getItemCount(16) == 0 then
                        print("No enderchest")
                        error()
                else
                        goTo(0,workingY,0)
                        turns = 0
                        special = "none"
                        saveCor()
                end
        elseif special == "going down"  then
                goTo(0,2,0)
                turns = 0
        elseif special == "going up" then
                goTo(0,home,0)
                dropItems()
                deleteFiles()
                clear()
                print("Done!!")
                error()
        else
                resume()
        end
        Bedrock()
        goTo(0,home,0)
        dropItems()
        deleteFiles()
        clear()
        print("Done!!!")
else
        startProg()
        working()
        clear()
        print("Done!!!")
end