lumbercontroller

local saplings = {}
saplings["minecraft:oak_sapling"] = true
saplings["minecraft:spruce_sapling"] = true
saplings["minecraft:birch_sapling"] = true
saplings["minecraft:jungle_sapling"] = true
saplings["minecraft:acacia_sapling"] = true
saplings["minecraft:dark_oak_sapling"] = true

local top = peripheral.wrap("top")
local front = peripheral.wrap("front")
local sizeTop = top.size()
local sizeFront = front.size()
print("")
print(sizeTop)
print(sizeFront)

while true do
    for i=1,sizeTop do
        print(i)
        local item = top.getItemDetail(i)
        if item then
            print(item.name)
            if saplings[item.name] then
                top.pushItems(peripheral.getName(front), i)
            end
        end
    end
    local slp = 30
    print("sleeping for "..slp.." seconds")
    sleep(slp)
end