3x3_Tunnler

--Tunneldistance
distance = ...
if not distance then
    distance = 50
else
    distance = tonumber(distance)
end

local move = require("move")

-- turns into tunnel or back out in starting direction
function takeTurn()
    if tunnelSide == "left" then
        turtle.turnLeft()
    else
        turtle.turnRight()
    end
end

function tunnelRow()

end
--tunnel 3x3 for (start left bottom one block outside tunnel)
function buildTunnel()
    for cnt = 1, distance, 1 do
        move.Forward()
        if cnt % 2 == 1 then
            turtle.turnRight()
            move.Up()
            move.Up()
            move.Forward()
            move.Down()
            move.Down()
            move.Forward()
            move.Up()
            move.Up()
            turtle.turnLeft()
        else
            turtle.turnLeft()
            move.Down()
            move.Down()
            move.Forward()
            move.Up()
            move.Up()
            move.Forward()
            move.Down()
            move.Down()
            turtle.turnRight()
        end
    end
end

buildTunnel()