Routing

rednet.open("front")
rs.setOutput("top", false)

isTiming = false
isGreen = rs.getInput("back")
shouldOutput = false
isPassthrough = false
timer = nil

if isGreen then
  rs.setOutput("top", true)
  sleep(.1)
  rs.setOutput("top", false)
end

while true do
  event = {os.pullEvent()}

  print("Event = "..event[1])

  if event[1] == "redstone" then
    print("Redstone event")
    if rs.getInput("front") then
      isPassthrough = true
    elseif not isTiming then
      isPassthrough = false
      print("Not timing")
      if rs.getInput("left") then
        print("Starting timer")
        isTiming = true
        timer = os.startTimer(16)
        rednet.broadcast("15")
      end
    end

    isGreen = rs.getInput("back")
    if isGreen then print("isGreen = true") else print("isGreen = false") end


  elseif event[1] == "timer" then
    print("Timer event")
    if event[2] == timer then
      print("Timer done")
      isTiming = false
      shouldOutput = true
    end
  end

  if isGreen then
    if isPassthrough then
      rs.setOutput("top", true)
      sleep(1.5)
      rs.setOutput("top", false)
      isPassthrough = false
    elseif shouldOutput then
      rs.setOutput("top", true)
      sleep(.1)
      rs.setOutput("top", false)
      shouldOutput = false
    end
  end
  print("")
end