progress bar mfsu [OpenComputers]

--[[opencomputers progress bar mfsu by serafim
    pastebin.com/kyN49tte

Получить заряд МФСУ и вывести на экран.
От 1-го до 5-ти mfsu подключенных к
ПК с помощью адаптера.
]]--

local comp = require('component')
local gpu = comp.gpu

if not comp.isAvailable("mfsu") then
  print("Ошибка! >> mfsu не найден")
  os.exit()
end

local function getAllSpecificComponets(filter)
  local tableObjects ={}
  for address, componentType in comp.list(filter) do
    table.insert(tableObjects, comp.proxy(address))
  end
  return tableObjects
end

local mfsu = getAllSpecificComponets('mfsu')
local capacity = mfsu[1].getCapacity

if #mfsu > 5 then
  print("Ошибка! >> подключено больше 5 mfsu")
  os.exit()
end

local w, h = gpu.getResolution()
gpu.fill(1, 1, w, h, " ")
gpu.setBackground(0x000000)
gpu.setForeground(0x669999)
local a,b,c,d,e,f = 1,2,3,4,3,4
for i = 1, #mfsu do
  gpu.set(3, a, "MFSU "..i.." :")
  gpu.set(1, b, " ┌────────────────────────────────────┐ ")
  gpu.set(1, c, " │")                  gpu.set(39, e, "│ ")
  gpu.set(1, d, " └────────────────────────────────────┘ ")
  a=a+5 b=b+5 c=c+5 d=d+5 e=e+5
  if i ~= #mfsu then f=f+5 end
end
gpu.setResolution(44, f)
gpu.setForeground(0xFF9900)

local stored,procent,progress = 0,0,0
local a,b,c,d = 1,3,3,4
while true do
  for i = 1, #mfsu do
    stored = mfsu[i].getStored
    procent = math.ceil(stored()/capacity()*100)
    progress = math.ceil(procent/100*34)
    gpu.set(14, a, stored().." Eu из "..capacity())
    gpu.set(40, b, procent.."% ")
    d = 4
    for i = 1, progress do
      if d < 38 then
        gpu.set(d, c, "█ ")
      end
      d = d + 1
    end
    a=a+5 b=b+5 c=c+5
    if i == #mfsu then a,b,c = 1,3,3 end
  end
end