TreeFarm.lua

rednet.open("right")
local tree = 0
local height = 0

function PlantTree()

    if turtle.getItemCount(1) == 0 then
        turtle.back()
        turtle.turnRight()
        turtle.select(1)
        turtle.suck()
        turtle.turnRight()
        ClearInv()
    end

    print("PlantTree #" .. tree)
    turtle.select(1)
    turtle.place()
    BoneMeal()
end

function BoneMeal()
    print("BoneMeal #" .. tree)
    turtle.select(2)
    while true do
        local bool, block = turtle.inspect()
        if block.name == "minecraft:log" then
            BreakTree()
        end
        turtle.place()
    end
end

function BreakTree()
    print("BreakTree #" .. tree)

    turtle.dig()
    turtle.forward()

    while true do
        bool, block = turtle.inspectUp()
        if block.name == "minecraft:log" then
            turtle.digUp()
            turtle.up()
            height = height + 1
        end

        if block.name ~= "minecraft:log" then
            while true do
                if height ~= 0 then
                    turtle.down()
                    height = height - 1
                end
                if height == 0 then
                    turtle.back()
                    tree = tree + 1
                    sleep(20)
                    PlantTree()
                end
            end
        end
    end
end

function ClearInv()

    turtle.select(3)
    turtle.drop()
    turtle.select(4)
    turtle.drop()
    turtle.select(5)
    turtle.drop()
    turtle.select(6)
    turtle.drop()
    turtle.select(7)
    turtle.drop()
    turtle.select(8)
    turtle.drop()
    turtle.select(9)
    turtle.drop()
    turtle.turnRight()
    turtle.turnRight()
    turtle.forward()
    PlantTree()
end

PlantTree()