turtle.select(1)
n = 0
built = false
done = false
for i = 1,4 do
turtle.turnRight()
if (turtle.detect() == true and i < 4) then
turtle.dig()
end
turtle.place()
end
if (turtle.detectUp()) then
turtle.digUp()
end
turtle.placeUp()
while done == false do
turtle.digDown()
if (n == 0) then
turtle.down()
turtle.digDown()
n = n + 1
end
for i = 1,5 do
turtle.turnRight()
turtle.select(3)
if (i < 5 and turtle.compare() == false) then
turtle.dig()
end
turtle.select(1)
end
if (turtle.detectDown()) then
for i = 1,n do
turtle.up()
end
turtle.digUp()
turtle.select(2)
turtle.placeUp()
turtle.dig()
turtle.forward()
turtle.forward()
turtle.turnRight()
turtle.turnRight()
turtle.select(1)
turtle.place()
done = true
else
n = n + 1
turtle.down()
end
end