Progress Bar API

    local monitor
    local hasMonitor = false
    local ProgressBar = {}
    local FillColor = colors.orange
    local EmptyColor = colors.blue
    local TextColor = colors.white

    function SetPeripheral(side)
      if (peripheral.isPresent(side)) then
        monitor = peripheral.wrap(side)
        hasMonitor = true
      end
    end

    function SetTable(name, maxVal, curVal, xmin, xmax, y)
      ProgressBar[name] = {}
      ProgressBar[name]["Max"] = maxVal
      ProgressBar[name]["Current"] = curVal
      ProgressBar[name]["XMin"] = xmin
      ProgressBar[name]["XMax"] = xmax
      ProgressBar[name]["YVal"] = y
    end

    function ClearTable()
      if (hasMonitor) then
        ProgressBar = {}
      end
    end

    function SetFillColor(color)
      if (colors.combine(color,color)) then
        FillColor = color
      end
    end

    function SetEmptyColor(color)
      if (colors.combine(color,color)) then
        EmptyColor = color
      end
    end

    function SetTextColor(color)
      if (colors.combine(color,color)) then
        TextColor = color
      end
    end

    function SetMaxValue(name, intVal)
      if (ProgressBar[name]) then
        ProgressBar[name]["Max"] = intVal
      end
    end

    function SetCurValue(name, intVal)
      if (ProgressBar[name]) then
        ProgressBar[name]["Current"] = intVal
      end
    end

    function DrawToPeripheral(index)
      if (hasMonitor) then
          DrawBar(index,ProgressBar[index])
      end
    end

    function DrawBar(name, arr)
      local y = arr["YVal"]
      local fill = math.floor((arr["XMax"] - arr["XMin"]) * (arr["Current"] / arr["Max"]))

      monitor.setBackgroundColor(FillColor)
      monitor.setTextColor(TextColor)

      for x = arr["XMin"], arr["XMax"] do
        local num = math.floor(x - arr["XMin"])
        monitor.setCursorPos(x,y)

        if (num > fill) then
          monitor.setBackgroundColor(EmptyColor)
        end

        if (num == 0) then
          monitor.write("[")
        end
        if (x == arr["XMax"]) then
          monitor.write("]")
        else
          monitor.write(" ")
        end
      end

      monitor.setBackgroundColor(colors.black)
    end