Mine v0.22

-- DECLARATIONS ->
function print_inv()
    for i=1 , 16 do
        local data = turtle.getItemDetail(i)
        turtle.select(i)
            if turtle.getItemDetail(i) ~= nil then
                print("Slot " .. i .." : " .. data.count .. " " .. data.name)
            else
                print("Slot " .. i .." : Empty !")
            end
        end
turtle.select(1)
end
--[[
function organise()
    for i=1 , 16 do
    j = i
        local data = turtle.getItemDetail(i)
        turtle.select(i + 1)
            if turtle.getItemDetail(i) == nil then
                turtle.transferTo(j)
            end
        end
turtle.select(1)
end
]]
function ft_fwd(nb)
i = 0
    while i<nb do
    local success, data = turtle.inspect()
        if success then
        turtle.dig()
        turtle.forward()
        else
        turtle.forward()
        end
    i = i+1
    end
end

function ft_impr ()
ft_fwd(1)
turtle.turnRight()
ft_fwd(2)
end

function ft_pair ()
ft_fwd(2)
turtle.turnLeft()
ft_fwd(1)
end

function clean()
    for i=1 , 16 do
        local data = turtle.getItemDetail(i)
        if turtle.getItemDetail(i) ~= nil then
            if i == 1 then
                turtle.select(i)
                turtle.dropDown(data.count - 1)
            elseif ((data.name == "minecraft:cobblestone") or (data.name == "minecraft:dirt")) then
                turtle.select(i)
                turtle.dropDown()
            end
        end
    end
turtle.select(1)
end

function mine()
 turtle.digDown()

 local success, data = turtle.inspectDown()

 if ((success ~= true) or (data.name == "minecraft:flowing_lava") or (data.name == "minecraft:flowing_water")) then
    turtle.down()
    mine()
    turtle.up()
  end

  for i=1, 4
  do
    turtle.turnRight()
    local success, data = turtle.inspect()

    if success then
      print(data.name)
      if ((data.name ~= "minecraft:stone") and (data.name ~= "minecraft:grass")
      and (data.name ~= "minecraft:dirt") and (data.name ~= "TConstruct:GravelOre")
      and (data.name ~= "minecraft:sand"))
        then turtle.dig()
      end
    else
      print("minecraft:air")
    end
  end
end

-- MAIN ->
turtle.select(1)
print ("Attention !!! Ne prend pas en compte le surplus !!!")
print ("Please define X")
xmax = tonumber(read())
print ("Please define Y")
ymax = tonumber(read())
print ("Press F3 and write the value of Y")
height = tonumber(read())
cl = true
choice = " "
while ((choice ~= "y") and (choice ~= "n")) do
print ("Do you want eject the scrap (y/n)?")
choice = read()
    if choice == "n" then
        cl = false
    elseif choice == "y" then
        cl = true
    else
    print("y or n expected !")
    end
end
fuel = turtle.getFuelLevel()
fneed = 3 * height * xmax * ymax
print ("Estimated fuel required : " ..fneed)
os.sleep(2)
while fuel < fneed do
    print ("Put Fuel in slot 1\nStill Requiring : " ..(fneed - fuel))
    os.sleep(4)
    turtle.refuel()
    fuel = turtle.getFuelLevel()
    turtle.select(1)
end
x = 1
y = 1
while ((x <= xmax) and (y <= ymax)) do
    mine()
    clean()
    turtle.placeDown()
        if ((x == xmax) and (y%2 == 0)) then
            if xmax%2 == 1 then turtle.turnRight() end
            ft_impr()
            x = 1
            y = y + 1
        elseif ((x == xmax) and (y%2 == 1)) then
            if xmax%2 == 0 then turtle.turnLeft() end
            ft_pair()
            turtle.turnLeft()
            x = 1
            y = y + 1
        elseif x%2 == 1 then
            ft_impr()
            x = x + 1
        elseif x%2 == 0 then
            ft_pair()
            x = x + 1
        else print("EXTERMINATE !!!")
        end
end