tree

function toggleTurn(dir)
    if dir == "right" then
        turtle.turnRight()
        turtle.dig()
        turtle.forward()
        turtle.turnRight()
        return("left")
    else
        turtle.turnLeft()
        turtle.dig()
        turtle.forward()
        turtle.turnLeft()
        return("right")
    end
end


while true do
    n = 6
    turtle.select(1)
    print("Awaiting...")
    turtle.place()
    while turtle.compare() do
        sleep(1)
    end
    print("Tree detected")
    turtle.back()
    turtle.turnLeft()
    turtle.forward()
    turtle.forward()
    turtle.turnRight()
    while true do
        turtle.up()
        n = n+1
        if turtle.detectUp() then
            break
        elseif turtle.detect() then
            break
        end
    end
    if not turtle.detect() then
        turtle.digUp()
        turtle.up()
    end
    turn = "right"
    for a =1, 2 do
        for b =1, 5 do
            for c =1, 4 do
                turtle.dig()
                turtle.forward()
            end
            if b < 5 then
                turn = toggleTurn(turn)
            end
        end
        turtle.digUp()
        turtle.up()
        turtle.turnLeft()
        turtle.turnLeft()
    end
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
    turtle.dig()
    turtle.forward()
    for a = 1,2 do
        turn = "right"
        for b = 1,3 do
            for c = 1,2 do
                turtle.dig()
                turtle.forward()
            end
            if b < 3 then
                turn = toggleTurn(turn)
            end
        end
        turtle.digUp()
        turtle.up()
        turtle.turnLeft()
        turtle.turnLeft()
    end
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
    for i =1, n do
        turtle.dig()
        turtle.down()
    end
end