CC/RailCraft Tank Gauge

--Basic Railcraft Tank Gauge by wok86
--Monitor size is 3 high x 2 wide

--Side of monitor
local m = peripheral.wrap("top")

--Peripheral name of Right Tank
local rT = peripheral.wrap("rcsteeltankvalvetile_0")

--Peripheral name of Left Tank
local lT = peripheral.wrap("rcsteeltankvalvetile_1")


--Leave this alone
local t = term.native()


while true do

  local rTT = rT.getTankInfo()
  local lTT = lT.getTankInfo()
  --local lTAmt = 0
  --local rTAmt = 0

  --Right Tank variables

  if rTT[1]["contents"] == nil then
    rTAmt = 0
  else
    rTAmt = rTT[1]["contents"]["amount"]
  end
  local rTCap = rTT[1]["capacity"]
  local rTPer = (rTAmt/rTCap)*100


  --Left Tank Variables

  if lTT[1]["contents"] == nil then
    lTAmt = 0
  else
    lTAmt = lTT[1]["contents"]["amount"]
  end
  local lTCap = lTT[1]["capacity"]
  local lTPer = (lTAmt/lTCap)*100



  --Monitor positions/sizes for the bars
  local xMinl = 2
  local xMaxl = 8
  local xMinr = 11
  local xMaxr = 17
  local yMaxl = 18
  local yMaxr = 18

  --Work out the height of the bar required
  local yMinl = yMaxl - (math.floor((yMaxl/100) * math.ceil(lTPer)))
  local yMinr = yMaxr - (math.floor((yMaxr/100) * math.ceil(rTPer)))

  --Make it so that the bar doesn't go too high
  if yMinl == 0 or yMinl == 1 then
    yMinl = 2
  else
    print(" ")
  end

  if yMinr == 0 or yMinr == 1 then
    yMinr = 2
  else
    print(" ")
  end


  --Reset the computer screen (not the monitor)
  term.clear()
  term.setCursorPos(1,1)

  --Print some raw info on computer screen (not the monitor)
  print("Left Tank: "..math.ceil(lTPer).."%")
  print("LTA: "..lTAmt)
  print("LTC: "..lTCap)
  print("Right Tank: "..math.ceil(rTPer).."%")
  print("RTA: "..rTAmt)
  print("RTC: "..rTCap)

  --Redirect output to the monitor
  term.redirect(m)

  --Reset/clear the monitor
  term.clear()
  term.setCursorPos(1,1)
  term.setBackgroundColor(colors.black)
  term.setTextColor(colors.white)
  m.clear()
  m.setCursorPos(1,1)
  m.setBackgroundColor(colors.black)
  m.setTextColor(colors.white)

  --Print bar labels
  term.setCursorPos(3, 1)
  print("Tank1")
  term.setCursorPos(12, 1)
  print("Tank2")

  --Draw the Left bar
  for i = xMinl, xMaxl do
    for j = yMinl, yMaxl do
      if math.ceil(lTPer) < 24 then
        paintutils.drawPixel(i, j, colors.red)
      elseif math.ceil(lTPer) >= 25 and math.ceil(lTPer) <= 60 then
        paintutils.drawPixel(i, j, colors.orange)
      else
        paintutils.drawPixel(i, j, colors.lime)
      end
    end
  end

  --Draw the Right bar
  for k = xMinr, xMaxr do
    for l = yMinr, yMaxr do
      if math.ceil(rTPer) < 24 then
        paintutils.drawPixel(k, l, colors.red)
      elseif math.ceil(rTPer) >= 25 and math.ceil(rTPer) <= 60 then
        paintutils.drawPixel(k, l, colors.orange)
      else
        paintutils.drawPixel(k, l, colors.lime)
      end
    end
  end


  --Print the percentage of the Left Tank
  if math.ceil(lTPer) <= 9 then
    term.setCursorPos(5, 18)
  elseif math.ceil(lTPer) >= 10 and math.ceil(lTPer) <= 99 then
    term.setCursorPos(4, 18)
  else
    term.setCursorPos(3, 18)
  end

  if math.ceil(lTPer) < 24 then
    term.setBackgroundColor(colors.red)
  elseif math.ceil(lTPer) >= 25 and math.ceil(lTPer) <= 60 then
    term.setBackgroundColor(colors.orange)
  else
    term.setBackgroundColor(colors.lime)
  end

  term.setTextColor(colors.black)
  print(math.ceil(lTPer).." %")


  --Print the percentage of the Right Tank
  if math.ceil(rTPer) <= 9 then
    term.setCursorPos(14, 18)
  elseif math.ceil(rTPer) >=10 and math.ceil(rTPer) <= 99 then
    term.setCursorPos(13, 18)
  else
    term.setCursorPos(12, 18)
  end

  if math.ceil(rTPer) < 24 then
    term.setBackgroundColor(colors.red)
  elseif math.ceil(rTPer) >= 25 and math.ceil(rTPer) <= 60 then
    term.setBackgroundColor(colors.orange)
  else
    term.setBackgroundColor(colors.lime)
  end

  term.setTextColor(colors.black)
  print(math.ceil(rTPer).." %")

  --Redirect back to the computer screen
  term.redirect(t)

  --Wait
  sleep(5)
  print("sleep")

end