Miningv4

local function mine(x)
    local counter = 0
    repeat
        turtle.dig()
        moveForward(1)
        turtle.digUp()
        counter = counter + 1
    until counter == x
end

local function turnAround()
    turtle.turnRight()
    turtle.turnRight()
end

function moveForward(x)
    for i = 1, x, 1 do
        if turtle.forward() then
            -- nichts passiert
        else
            if turtle.detect() then
                while(turtle.detect()) do
                    turtle.dig()
                end
                moveForward(1)
            else
                os.shutdown()
            end
        end
    end
end

local function placeTorch()
    turtle.up()
    turtle.select(2)
    turtle.back()
    turtle.place()
    turtle.down()
end

local function stripMine(x)
    for i = 1, x, 1 do
        mine(3)
        if i % 2 == 1 then
            turtle.back()
            placeTorch()
            moveForward(2)
        end

        turtle.turnRight()
        mine(8)
        placeTorch()
        turnAround()
        moveForward(7)
        mine(8)
        placeTorch()
        turnAround()
        moveForward(7)
        turtle.turnLeft()
        for j=1, 16, 1 do
            local slot = turtle.getItemDetail(j)
            if slot ~= nil then
                if slot["name"] == "minecraft:cobblestone" then
                    turtle.select(j)
                    turtle.drop()
                end
            end
        end
    end
end

local function calculateFuel(number_of_corridors)
    local fields_to_move = (number_of_corridors * 40) + (6 * math.ceil(number_of_corridors / 2))
    return math.ceil(fields_to_move / 80)
end

local function calculateTorches(number_of_corridors)
    local additionalTorches = math.ceil(number_of_corridors / 2)
    return (number_of_corridors * 2) + additionalTorches
end

local function printWithConfirmation(string)
    print(string)
    local input = read()
    if input ~= "y" and input ~= "yes" then
        os.shutdown()
    end
end

print("Ultimate Miner by KingKevin23")
print("How many corridors should be mined?")
local number_of_corridors = tonumber(read())
printWithConfirmation("Please provide " .. calculateFuel(number_of_corridors) .. " coal items in slot 1.")
printWithConfirmation("Please provide " .. calculateTorches(number_of_corridors) .. " torches in slot 2.")
turtle.select(1)
turtle.refuel()
stripMine(number_of_corridors)