GTOC power monitor

local component = require("component")
local sides = require("sides")
local powerbox = component.inventory_controller
local battery1 = {}
local battery2 = {}
local battery3 = {}
local battery4 = {}
local battery5 = {}
local battery6 = {}
local battery7 = {}
local battery8 = {}
local battery9 = {}
local battery10 = {}
local battery11 = {}
local battery12 = {}
local battery13 = {}
local battery14 = {}
local battery15 = {}
local battery16 = {}

local gpu = component.gpu
local w, h = gpu.getResolution()
local refreshRate = 5

local EUtotal = 0
local EUMax = 0
local EUprevious = 0
local EUchange = 1

gpu.fill(1, 1, w, h, " ")

gpu.set(1, 1, "         Doomascus Power Stats         ")

local function round(num) return math.floor(num+.5) end

local function pollBatteries()
battery1 = powerbox.getStackInSlot(sides.bottom, 1)
battery2 = powerbox.getStackInSlot(sides.bottom, 2)
battery3 = powerbox.getStackInSlot(sides.bottom, 3)
battery4 = powerbox.getStackInSlot(sides.bottom, 4)
battery5 = powerbox.getStackInSlot(sides.bottom, 5)
battery6 = powerbox.getStackInSlot(sides.bottom, 6)
battery7 = powerbox.getStackInSlot(sides.bottom, 7)
battery8 = powerbox.getStackInSlot(sides.bottom, 8)
battery9 = powerbox.getStackInSlot(sides.bottom, 9)
battery10 = powerbox.getStackInSlot(sides.bottom, 10)
battery11 = powerbox.getStackInSlot(sides.bottom, 11)
battery12 = powerbox.getStackInSlot(sides.bottom, 12)
battery13 = powerbox.getStackInSlot(sides.bottom, 13)
battery14 = powerbox.getStackInSlot(sides.bottom, 14)
battery15 = powerbox.getStackInSlot(sides.bottom, 15)
battery16 = powerbox.getStackInSlot(sides.bottom, 16)
end

local function addEU()
EUMax = 0
EUtotal = 0
if battery1 ~= nil then
EUtotal = EUtotal + battery1.charge
EUMax = EUMax + battery1.maxCharge
end
if battery2 ~= nil then
EUtotal = EUtotal + battery2.charge
EUMax = EUMax + battery2.maxCharge
end
if battery3 ~= nil then
EUtotal = EUtotal + battery3.charge
EUMax = EUMax + battery3.maxCharge
end
if battery4 ~= nil then
EUtotal = EUtotal + battery4.charge
EUMax = EUMax + battery4.maxCharge
end
if battery5 ~= nil then
EUtotal = EUtotal + battery5.charge
EUMax = EUMax + battery5.maxCharge
end
if battery6 ~= nil then
EUtotal = EUtotal + battery6.charge
EUMax = EUMax + battery6.maxCharge
end
if battery7 ~= nil then
EUtotal = EUtotal + battery7.charge
EUMax = EUMax + battery7.maxCharge
end
if battery8 ~= nil then
EUtotal = EUtotal + battery8.charge
EUMax = EUMax + battery8.maxCharge
end
if battery9 ~= nil then
EUtotal = EUtotal + battery9.charge
EUMax = EUMax + battery9.maxCharge
end
if battery10 ~= nil then
EUtotal = EUtotal + battery10.charge
EUMax = EUMax + battery10.maxCharge
end
if battery11 ~= nil then
EUtotal = EUtotal + battery11.charge
EUMax = EUMax + battery11.maxCharge
end
if battery12 ~= nil then
EUtotal = EUtotal + battery12.charge
EUMax = EUMax + battery12.maxCharge
end
if battery13 ~= nil then
EUtotal = EUtotal + battery13.charge
EUMax = EUMax + battery13.maxCharge
end
if battery14 ~= nil then
EUtotal = EUtotal + battery14.charge
EUMax = EUMax + battery14.maxCharge
end
if battery15 ~= nil then
EUtotal = EUtotal + battery15.charge
EUMax = EUMax + battery15.maxCharge
end
if battery16 ~= nil then
EUtotal = EUtotal + battery16.charge
EUMax = EUMax + battery16.maxCharge
end

if EUprevious > EUtotal then
EUchange = 0
else
EUchange = 1
end

EUprevious = EUtotal
end

local function drawScreen()
pollBatteries()
addEU()
gpu.fill(1, 2, w, h, " ")
gpu.set(1, 2, "Stored: " .. EUtotal .. " EU")
gpu.set(1, 3, "Max: " .. EUMax .. " EU")
gpu.set(1, 4, "Storage Percent: " .. tostring(round(((EUtotal/EUMax)*100))) .. "%")

if EUchange == 0 then
gpu.set(1, 5, "Power Levels: !!SHORTAGE!!")
else
gpu.set(1, 5, "Power Levels: OPTIMAL.")
end

end

drawScreen()

while true do
    drawScreen()
    os.sleep(refreshRate)
end