farm.lua

local event = require("event")
local fs = require('filesystem')
local component = require("component")
local m = component.modem
local sides = require("sides")
local colors = require("colors")
local ae = require("ae")
local timerID = -1
local rsSignal = {0, 25, 52, 77, 98}
local config = {}

function start(msg)
  if (timerID ~= -1) then
    print("Already running")
    return
  end
  timerID =  event.timer(30, tick, math.huge)
  c = loadConfig()
  config = c or {}
end

function stop(msg)
  if (timerID == -1) then
    print("Not running")
    return
  end
  event.cancel(timerID)
  timerID = -1
end

function getSapling()
  item = ae.getItem("Forestry:sapling", 0) or {}
  return item.size or 0
end

function updateFarm()
  wood = getSapling()
  if(wood >= 40000) then
    m.broadcast(500, 4)
    return
  end
  if(wood >= 30000) then
    m.broadcast(500, 3)
    return
  end
  if(wood >= 20000) then
    m.broadcast(500, 2)
    return
  end
  if(wood >= 10000) then
    m.broadcast(500, 1)
    return
  end
  m.broadcast(500, 0)
end

function tick()
  updateFarm()
end

function loadConfig()
  local env = {}
  local result, reason = loadfile('/etc/farm.cfg', 't', env)
  if result then
    result, reason = xpcall(result, debug.traceback)
    if result then
      return env
    end
  end
  return nil, reason
end