b1

function viravn()
h1=1
  turtle.up()
  while turtle.detectUp()==true do
    turtle.digUp()
    turtle.up()
    h1=h1+1
  end
  while h1>0 do
    turtle.down()
    h1=h1-1
  end
end
local MIN_FUEL = 300
local AUTO_REFUEL = true

local function  refuel()
        for i = 1, 16 do
        turtle.select(i)
                turtle.refuel()
        end
        turtle.select(1)
end

local function clearDrop()
        if AUTO_REFUEL and turtle.getFuelLevel() < MIN_FUEL then refuel() end
    for slot = 1, 16 do
        turtle.select(slot)
        turtle.dropDown()
    end
end

function  forward()
                while not turtle.forward() do
                        turtle.attack()
                        sleep(1)
                end
end
local function  forward1()
        while not turtle.forward() do
                if not turtle.dig() then
                turtle.attackUp()
                sleep(1)
            end
    end

end
local function  up()
        while not turtle.up() do
                if not turtle.digUp() then
                turtle.attackUp()
                sleep(1)
            end
    end
    h = h+1
end

local function  down()
        while not turtle.down() do
                if not turtle.digDown() then
                turtle.attackDown()
                sleep(1)
            end
    end
    h = h-1
end

local function  left()
        turtle.turnLeft()
end

local function  right()
        turtle.turnRight()
end

local function around()
        right()
        right()
end

local function  returnWall()
    while true do
    local state, typeblock = turtle.inspect()
            if typeblock.name ~= 'minecraft:cobblestone'  then
                if (typeblock.name == 'ComputerCraft:CC-TurtleExpanded') or (typeblock.name == 'ComputerCraft:CC-Turtle') then
                sleep(1)
                else
                 forward1()
                end
            else
                right()
                break
            end
    end
end

local function  returnMatka()
        while true do
                forward()
        end
end

local function digHole()
                h = 0
                while true do
                        local state, typeblock = turtle.inspectDown()
                if typeblock.name ~= 'minecraft:bedrock' then
                                down()
                turtle.dig()
            else
                break
            end
        end
end

local function returnSurface()
        while h~=0 do
                turtle.dig()
                up()
        end
end

local function  main()
        os.setComputerLabel("BABY-"..os.getComputerID())
        term.clear()
        term.setCursorPos(1,1)
        print('Fuel level: ', turtle.getFuelLevel())
        print('Easy dig running!')
        peripheral.call('left','turnOn')
        peripheral.call('right','turnOn')
        refuel()
                if turtle.getFuelLevel() < MIN_FUEL then
                        error('Fatal ERROR, put fuel in any slot end PRESS Ctrl+R!')
                end
        digHole()
        around()
        for i = 1, 4 do up()  end
        while turtle.detect() do turtle.dig() end
        forward()
        while true do
                        local state, typeblock = turtle.inspectDown()
                if typeblock.name ~= 'minecraft:bedrock' then
                                down()
            else
                break
            end
        end
        returnSurface()
        around()
        returnWall()
        clearDrop()
        returnMatka()
end

main()