energy HUD

local bridge = peripheral.wrap("left")
local net = peripheral.wrap("back")

bridge.clear()

local width = 200

local storageUnitsA = {
   {
         ["id"] = "redstone_energy_cell_0",
         ["name"] = "cell 1"
   },
   {
         ["id"] = "redstone_energy_cell_1",
         ["name"] = "cell 2"
   },
   {
         ["id"] = "redstone_energy_cell_2",
         ["name"] = "cell 3"
   },
   {
         ["id"] = "batbox_0",
         ["name"] = "mfe 1"
   },
   {
         ["id"] = "batbox_1",
         ["name"] = "mfe 2"
   },
   {
         ["id"] = "batbox_2",
         ["name"] = "mfe 3"
   }
}

local offset = 0
for key, storageUnit in pairs(storageUnitsA) do
  pxOffset = offset * 20
  storageUnit["label"] = bridge.addText(4, 4 + pxOffset, storageUnit["name"], 0x000000)
  storageUnit["bar"] = bridge.addBox(4, 14 + pxOffset, 0, 5, 0xCC0000, 0.9)
  storageUnit["bar"].setZIndex(2)
  storageUnit["bg"] = bridge.addBox(4, 14 + pxOffset, width, 5, 0x000000, 0.5)
  offset = offset + 1
end

while true do
  for i=#storageUnitsA,1,-1 do
        storageUnit = storageUnitsA[i]
        if net.isPresentRemote(storageUnit["id"]) then
          if net.getTypeRemote(storageUnit["id"]) == "redstone_energy_cell" then
            capacity = net.callRemote(storageUnit["id"], "getMaxEnergyStored")
            amount = net.callRemote(storageUnit["id"], "getEnergyStored")
            print(storageUnit["id"] .. " : " .. amount .. "/" .. capacity)
          elseif net.getTypeRemote(storageUnit["id"]) == "batbox" then
            capacity = net.callRemote(storageUnit["id"], "getCapacity")
            amount = net.callRemote(storageUnit["id"], "getStored")
          end
        elseif not net.isPresentRemote(storageUnit["id"]) then
          storageUnit["bar"].delete()
          storageUnit["bg"].delete()
          storageUnit["label"].delete()
          table.remove(storageUnitsA, i)
        end
          storageUnit["bar"].setWidth(width / capacity * amount)
  end
  sleep(0.5)
end