Draconic Evolution Pylon Example

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-- Draconic Evolution Pylon Example                     --
--                                                      --
-- Minecraft FTB Infinity Evolved Episode 69            --
-- https://www.youtube.com/watch?v=u60-JhRAisg          --
--                                                      --
-- YouTube Channel http://youtube.com/hypnotizd         --
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-- refreshRate in seconds for the monitor to update
local refreshRate = 1
local prevEnergyStored = 0
local diff = 0

local pylon = nil
local modem = nil
local modemName = nil
local modemSide = nil
local side = {"front","back","top","bottom","left","right"}

local function findModem()
  local ret = nil
  for k,v in pairs(side) do
    local p = peripheral.wrap(v)
    if (p) then
      if (string.find(p.getNamesRemote(v)[1],"draconic")) then
        modemName = p.getNamesRemote(v)[1]
        modemSide = v
        modem = p
        return modemSide
      end
    end
  end
  return nil
end

local function comma_value(amount)
  local formatted = amount
  local k = 0
  while true do
    formatted, k = string.gsub(formatted, "^(-?%d+)(%d%d%d)", '%1,%2')
    if (k == 0) then
      break
    end
  end
  return formatted
end

local function getEnergyStored()
  return modem.callRemote(modemName, "getEnergyStored")
end

local function getMaxEnergyStored()
  return modem.callRemote(modemName, "getMaxEnergyStored")
end

local function init()
  findModem()
  if (modemSide == nil) then
    print("Error! No modem found!")
  end
end

init()

while true do
  local energyStored = getEnergyStored()
  local maxEnergyStored = getMaxEnergyStored()
  local percent = energyStored/maxEnergyStored*100
  diff = (energyStored - prevEnergyStored)/(refreshRate*20)
  term.clear()
  term.setCursorPos(1,1)
  print("    Max Energy: "..comma_value(maxEnergyStored))
  print("Current Energy: "..comma_value(energyStored).." ("..percent.."%)")
  print()
  if (diff > 0) then
    print("     Avg. RF/t: +"..comma_value(diff))
  else
    print("     Avg. RF/t: "..comma_value(diff))
  end
  prevEnergyStored = energyStored
  os.sleep(refreshRate)
end