Streamlined Reactor Display Program

-- Cosmetic settings for the monitor
local textScale = 1 --Size of text
local fuelDecimals = 3 --Decimals shown on fuel usage
local doubleLineWarnings = false --Put warnings on two lines

-- Settings for dealing with an overheating reactor
local maxTemperature = 3000
local tempWarningRatio = 0.75 --Ratio to change color for temp
local failsafeMaxDraw = 20 --Max Percentage Draw
local failsafeCooldown = 150 --Timer in Seconds
local safeTemp = 1 --Temperature to resume normal operation at

-- Increases cooldown timer if reactor stays above max temp, and
-- goes to 0 draw if timer reaches double failsafeCooldown
local handleBadSettings = true

-- Use sides or modem names to connect the devices
local monitorName = "bottom"
local reactorName = "back"

-- How long to wait before trying to connect if parts aren't ready
-- Recommended values are 1 if next to computer, 5 if using modem.
local monitorWait = 1
local reactorWait = 1

-- The first half of the warning messages
local problemNotice = "OFFLINE"
local workingNotice = "ONLINE"
local failsafeNotice = "OVERHEATED"

-- The string of characters (if any) that separates the two halves
-- of the warning messages
local noticeSeparator = " - "

-- The second half of the warning messages
local offlineWarning = "Manual Mode"
local emptyWarning = "Out of Fuel"
local noDrawWarning = "Standby Mode"
local lightDrawWarning = "Low Power Mode"
local mediumDrawWarning = "Moderate Power Mode"
local highDrawWarning = "High Power Mode"
local overheatWarning = "Safety Shutdown Cycle"

-- Used Internally - changing will do nothing
local rodLevels = 0
local currentWarning = ""
local cooldownTimer = 0
local warningColor = colors.white
local emptyflag = 0
local offlineflag = 0
local flashflag = 0
local overheated = false
local monitor = nil
local reactor = nil

while reactor == nil do
  reactor=peripheral.wrap(reactorName)
  if reactor == nil then
    print("Waiting for reactor peripheral")
    os.sleep(reactorWait)
  end
end

print("Found reactor. Looking for monitor.")

while monitor == nil do
  monitor = peripheral.wrap(monitorName)
  if monitor == nil then
    print("Waiting for monitor to connect")
    os.sleep(monitorWait)
  end
end

print("Monitor found.")

while not reactor.getConnected() do
  print("Waiting for reactor to connect.")
  os.sleep(reactorWait)
end

print("Program Initialized - View Monitor.")

monitor.setTextScale(textScale)
monitor.setBackgroundColor(colors.black)

function round(num, idp)
  local mult = 10^(idp or 0)
  return math.floor(num * mult + 0.5) / mult
end

while true do
monitor.clear()
monitor.setCursorPos(1,1)
monitor.setTextColor(colors.white)
monitor.write('Fuel Level:')
monitor.setCursorPos(1,2)
monitor.setTextColor(colors.yellow)
monitor.write(math.floor(((reactor.getFuelAmount()/reactor.getFuelAmountMax())*100)+0.5)..'% Fuel')
monitor.setCursorPos(1,3)
monitor.setTextColor(colors.lightBlue)
monitor.write(math.floor(((reactor.getWasteAmount()/reactor.getFuelAmountMax())*100)+0.5)..'% Waste')
monitor.setCursorPos(1,5)
monitor.setTextColor(colors.white)
monitor.write('Monitoring:')
monitor.setTextColor(colors.green)
monitor.setCursorPos(1,6)
monitor.write('Rods:  '..(100-(reactor.getControlRodLevel(0)))..'% Power')
monitor.setCursorPos(1,7)
monitor.write('Fuel:  '..round(reactor.getFuelConsumedLastTick(),fuelDecimals)..' mB/t')
monitor.setCursorPos(1,9)
monitor.setTextColor(colors.white)
monitor.write('Temperature:')
monitor.setCursorPos(1,10)
if reactor.getFuelTemperature()>=(maxTemperature*tempWarningRatio) then
    monitor.setTextColor(colors.purple)
elseif reactor.getFuelTemperature()>=maxTemperature then
    monitor.setTextColor(colors.red)
else
    monitor.setTextColor(colors.green)
end
monitor.write(math.floor(reactor.getFuelTemperature())..'C')
monitor.setCursorPos(1,12)
monitor.setTextColor(colors.white)
monitor.write('Flux:')
monitor.setCursorPos(1,13)
monitor.setTextColor(colors.green)
monitor.write(reactor.getEnergyStored()..' RF Stored      ')

if reactor.getEnergyProducedLastTick()>=500 and reactor.getEnergyProducedLastTick()<2000 then
    monitor.setTextColor(colors.orange)
end

if reactor.getEnergyProducedLastTick()>=2000 then
    monitor.setTextColor(colors.red)
end

monitor.setCursorPos(1,14)
monitor.write((math.floor(reactor.getEnergyProducedLastTick()+0.5))..' RF/t')
monitor.setCursorPos(1,16)
monitor.setTextColor(colors.white)
monitor.write('Warnings:')

if flashflag==0 then
  flashflag=1
  currentWarning = ""
  currentWarning2 = ""
  if offlineflag==1 then
    warningColor = colors.lightGray
    currentWarning = problemNotice..noticeSeparator
    currentWarning2 = offlineWarning
  elseif emptyflag==1 then
    warningColor = colors.pink
    currentWarning = problemNotice..noticeSeparator
    currentWarning2 = emptyWarning
  elseif cooldownTimer > 0 then
    currentWarning = failsafeNotice..noticeSeparator
    if overheated then
      warningColor = colors.green
      currentWarning2 = overheatWarning..' ('..cooldownTimer..')'
    end
  else
    currentWarning = workingNotice..noticeSeparator
  end

  if emptyflag==0 and offlineflag==0 and not overheated then
    if reactor.getControlRodLevel(0)>99 then
      warningColor = colors.lightBlue
      currentWarning2 = noDrawWarning
    elseif reactor.getControlRodLevel(0)>75 then
      warningColor = colors.yellow
      currentWarning2 = lightDrawWarning
    elseif reactor.getControlRodLevel(0)>50 then
      warningColor = colors.orange
      currentWarning2 = mediumDrawWarning
    else
      warningColor = colors.red
      currentWarning2 = highDrawWarning
    end
    if not doubleLineWarnings then
      currentWarning = currentWarning..currentWarning2
    end
    if cooldownTimer > 0 then
      warningColor = colors.purple
      currentWarning = currentWarning..' ('..cooldownTimer..')'
    end
  end

  monitor.setCursorPos(1,17)
  monitor.setTextColor(warningColor)
  monitor.write(currentWarning)
  if doubleLineWarnings then
    monitor.setCursorPos(1,18)
    monitor.write(currentWarning2)
  end
else
  flashflag=0
  monitor.setCursorPos(1,17)
  monitor.clearLine()
  if doubleLineWarnings then
    monitor.setCursorPos(1,18)
    monitor.clearLine()
  end
end

if emptyflag==0 and offlineflag==0 and not overheated then
  if reactor.getFuelTemperature() > maxTemperature and cooldownTimer == 0 then
    cooldownTimer = failsafeCooldown
  elseif reactor.getFuelTemperature() > maxTemperature and handleBadSettings then
    cooldownTimer = cooldownTimer + 1
    if cooldownTimer == failsafeCooldown * 2 then
      overheated = true
    end
  end
  if reactor.getEnergyStored()>= 1 then
    rodLevels = math.floor(reactor.getEnergyStored()/100000)
  else
    rodLevels = 0 --Full Draw
  end
  if cooldownTimer > 0 and rodLevels < (100 - failsafeMaxDraw) then
    rodLevels = (100 - failsafeMaxDraw)
  end
  reactor.setAllControlRodLevels(rodLevels)
end

if overheated then
  reactor.setAllControlRodLevels(100)
end

if reactor.getFuelAmount()<=100 and offlineflag==0 then
    reactor.setAllControlRodLevels(100)
    reactor.setActive(false)
    emptyflag=1
else
    emptyflag=0
end

if rs.getInput('top')==false and emptyflag==0 then
    reactor.setActive(true)
    offlineflag=0
end

if rs.getInput('top')==true and emptyflag==0 then
    reactor.setActive(false)
    reactor.setAllControlRodLevels(100)
    offlineflag=1
end

if cooldownTimer > 0 and reactor.getFuelTemperature() <= maxTemperature then
  cooldownTimer = cooldownTimer - 1
  if overheated and (cooldownTimer == 0 or reactor.getFuelTemperature() <= safeTemp) then
      overheated = false
      cooldownTimer = 0
  end
end

sleep(1)
end