function brakeSafe()
while turtle.detect() do
	turtle.dig()
	sleep(.6)
	end
end

function brakeSafeUp()
while turtle.detectUp() do
	turtle.digUp()
	sleep(.6)
	end
end
function getCobblestone()
cobbelstoneSlot=2
enderChestSlot=1
brakeSafeUp()
turtle.select(enderChestSlot)
turtle.placeUp()
	j=firstUnreservedSlot
	while j<=16 do
	turtle.select(j)
	turtle.suckUp()
	j=j+1
	end
	turtle.select(cobbelstoneSlot)
	turtle.suckUp()

turtle.select(enderChestSlot)
turtle.digUp()
end

function refuelCobblestoneSlot(firstUnreservedSlot)
cobblestoneslot=2
	k=firstUnreservedSlot
	while turtle.getItemCount(cobblestoneslot)<1 and k <= 16 do
		turtle.select(k)
		if turtle.getItemCount(k) > 0 then
			turtle.transferTo(cobblestoneslot,turtle.getItemCount(k)-1)
		end
		k=k+1
	end
if turtle.getItemCount(cobblestoneslot)<2 then
print("aiaiai mi tocca a ricaricare la cobblestone")
getCobblestone(firstUnreservedSlot)
print("cobblestone ricaricata!")
else
print("Cobblestone sufficente almeno per un altro giro")
end
end

function piazzaGiuSafe()
firstUnreservedSlot=3
rimepimentoSlot=2
turtle.select(rimepimentoSlot)
refuelCobblestoneSlot(firstUnreservedSlot)

turtle.placeDown()
end
function forwardSafe()
brakeSafe()
turtle.forward()
end
--dahaneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
function ring(x,z)
turtle.select(2)
j=0
k=0
l=0
while j<2 do


    turtle.forward()
    while k<x-1 do
        piazzaGiuSafe()
		brakeSafe()
        forwardSafe()
        k=k+1
    end
    k=0
    turtle.turnRight()
 piazzaGiuSafe()
    forwardSafe()
    while l<z-1 do
       piazzaGiuSafe()

       forwardSafe()
       l=l+1
    end
    l=0

    turtle.turnRight()
  piazzaGiuSafe()
    j=j+1
  end

end

function buildWall(x,z,y)
i=0


while i<y do
    turtle.up()
    ring(x,z)
    i=i+1
end

end

function roof(x,z)

    while z>0 do

        ring(x,z)

        forwardSafe()
        turtle.turnRight()

        forwardSafe()
        turtle.turnLeft()
        z=z-1
        x=x-1
    end
end
function pavimento(x,z)
a=z
b=x
    while a>0 do
        j=0
        k=0
        l=0
        while j<2 do
            forwardSafe()
            while k<b-1 do
                turtle.digDown()
                forwardSafe()
                k=k+1
            end
            k=0
            turtle.turnRight()
            turtle.digDown()
            forwardSafe()
            while l<a-1 do
                turtle.digDown()
                forwardSafe()
                l=l+1
            end
            l=0

            turtle.turnRight()
            turtle.digDown()
            j=j+1
        end
        forwardSafe()
        turtle.turnRight()
        forwardSafe()
        turtle.turnLeft()
        a=a-1
        b=b-1
    end


end


-- main
firstUnreservedSlot=3
refuelCobblestoneSlot(firstUnreservedSlot)

pavimento(3,3)
turtle.turnRight()
turtle.turnRight()
roof(3,3)
turtle.turnRight()
turtle.turnRight()
buildWall(3,3,3)
turtle.up()
roof(3,3)