back (computercraft)

os.loadAPI("mine")
os.loadAPI("bridge")
os.loadAPI("torch")

function clear()
drop = true
for i=1,16 do
turtle.select(i)
count = turtle.getItemCount()
if count > 0 then
local item = turtle.getItemDetail()
if item.name == "minecraft:torch" then
drop = false
end
end
if drop then
turtle.drop()
else drop = true
end
end
end
function back(shaftnum)
print("Go back...")
while not turtle.up() do
turtle.digUp()
end
turtle.turnLeft()
turtle.turnLeft()
for i=1,shaftnum*3 do
mine.mine2()
end
while not turtle.down() do
turtle.digDown()
end
clear()
end
function backandreturn(shaftnum)
print("Go back...")
while not turtle.up() do
turtle.digUp()
end
turtle.turnLeft()
turtle.turnLeft()
for i=1,shaftnum*3 do
mine.mine2()
end
while not turtle.down() do
turtle.digDown()
end
clear()
print("Go back...")
while not turtle.up() do
turtle.digUp()
end
turtle.turnLeft()
turtle.turnLeft()
for i=1,shaftnum*3 do
mine.mine2()
end
while not turtle.down() do
turtle.digDown()
end
end