A ComputerCraft Gist

foodStartup.lua

os.loadAPI("tools/json")

trackingData = {}

function resetTrackingData()
  trackingData = {}
  trackingData.startingChickens = 576
  trackingData.currentChickens = 576
  trackingData.customers = {}
  trackingData.resetTime = os.time()
  trackingData.lastSaved = os.time()
end

function storeTrackingData(data)
  data.lastSaved = os.time()
  fileHandle = fs.open("/data/chickenDinnerData.json", "w")
  fileHandle.write(json.encodePretty(data))
  fileHandle.close()
end

function readTrackingData()
  fileHandle = fs.open("/data/chickenDinnerData.json", "r")
  
  if fileHandle ~= nil then
    rawData = fileHandle.readAll()
    dataTable = json.decode(rawData)
    return dataTable
  else
    return {}
  end
end

monitor = peripheral.wrap("top")

function resetMonitor()
  monitor.clear()
  monitor.setCursorPos(1,1)  
end

function resetScreen()
  term.setBackgroundColor(colors.blue)
  term.setTextColor(colors.white)
  term.clear()
  term.setCursorPos(1,1)
end

function drawMonitorStats()
  -- tabulatedOutput = textutils.tabulate( colors.orange, {1,2,3}, colors.lightBlue, {"A","B","C"} )
  
  monitor.setCursorPos(1,1)
  monitor.write("Chicken Dinners Capacity: " .. trackingData.startingChickens)
  
  chickensConsumed = trackingData.startingChickens - trackingData.currentChickens
  
  monitor.setCursorPos(1,2)
  monitor.write("Chicken Dinners Consumed: " .. chickensConsumed)
  
  monitor.setCursorPos(1,3)
  monitor.write("Tracked since: " .. textutils.formatTime(trackingData.resetTime) )
  
  monitor.setCursorPos(1,4)
  monitor.write("Last save at : " .. textutils.formatTime(trackingData.lastSaved) )
  
  monitor.setCursorPos(1,5)
  for i = 1, 30 do
    monitor.write("-")
  end
  
  monitor.setCursorPos(1,6)
  monitor.write("Most recent customers: ")
  
  monitor.setCursorPos(1,7)
  monitor.write("Name\t\t\tTime")
  
  maxRows = 5
  if #trackingData.customers < 5 then
    maxRows = #trackingData.customers
  end
  
  for i = maxRows, 1, -1 do
    row = trackingData.customers[i]
    
    if row ~= nil then
      rowNumber = 7 + (maxRows - i)
      monitor.setCursorPos(1, rowNumber)  
      monitor.write(row.name .. "\t\t\t" .. row.time)
    end
  end  
  
end

function logDinner(name)
  customerCount = #trackingData.customers + 1
  trackingData.customers[customerCount] = {name = name, time = textutils.formatTime(os.time()) }
  trackingData.currentChickens = trackingData.currentChickens - 1
end

function promptAndDispense()
  resetScreen()
  print("Please enter your name to get dinner:")
  name = read()
  logDinner(name)
  redstone.setOutput("bottom", true)
  sleep(0.1)
  redstone.setOutput("bottom", false)
  textutils.slowPrint("Enjoy!")
end

-- Only use this to reset during testing
-- resetTrackingData()

while true do 
  resetMonitor()
  
  trackingData = readTrackingData()
  
  drawMonitorStats()
    
  promptAndDispense()
  
  storeTrackingData(trackingData)
  
  sleep(1)
end