BetterBranch

--[[
    Author
        Rasmus Sommer aka. TheSommer
        youtube.com/thesommersmc
        twitch.tv/thesommer

    How to use:
        Slot 1 - Fuel
        Slot 2 - Torches

        betterBranch <length>
--]]

local tArgs = { ... }
if #tArgs ~= 1 then
        print( "Usage: betterBranch <length>" )
        return
end

local length = tonumber( tArgs[1] )

if length < 1 then
        print( "Length must be positive" )
        return
end

local function refuel()
    if turtle.getFuelLevel() == 0 then
        turtle.select(1)
        if turtle.refuel(1) == false then
            return false
        end
    end
end

local function tryDig()
    while turtle.detect() == true do
        turtle.dig()
        sleep(0.5)
    end
end

local function tryDigDown()
    while turtle.detectDown() == true do
        turtle.digDown()
        sleep(0.5)
    end
end

local function tryDigUp()
    while turtle.detectUp() == true do
        turtle.digUp()
        sleep(0.5)
    end
end

local function placeTorch()
    turtle.turnRight()
    tryDig()
    turtle.select(2)
    turtle.place()
    turtle.turnLeft()
end

local function tryForward()
    if refuel() == false then
        return false
    end
    tryDig()
    turtle.forward()
    tryDigUp()
    tryDigDown()
end

local function tryBack()
    if refuel() == false then
        return false
    end
    turtle.back()
end

local count = 1
local torchSpacing = 7

term.clear()
term.setCursorPos(1,1)
term.write("--[ Information ]--")
for i=1, length do
    if tryForward() == false then
        term.clear()
        term.setCursorPos(1,1)
        term.write("Couldn't refuel. Aborting.")
        return
    end
    if count % torchSpacing == 0 then
        placeTorch()
    end
    term.setCursorPos(1,2)
    term.clearLine()
    term.write("Steps until return: "..length-i)
    count = count + 1
end
term.setCursorPos(1,3)
term.write("Returning to origin!")
for i=1, length do
    if tryBack() == false then
        term.clear()
        term.setCursorPos(1,1)
        term.write("Couldn't refuel. Aborting.")
        term.setCursorPos(1,2)
        return
    end
end
term.clear()