masterdetector

local newstair
local idelevator = 7

rednet.open("back")

detector = {
[1] = {id=2; niveau=0},
[2] = {id=3; niveau=-1},
[3] = {id=4; niveau=-2}
}

screen = {
[1] = {id=0; niveau=0},
[2] = {id=5; niveau=-1},
[3] = {id=6; niveau=-2}
}


function elevator()
   for id = 1,3 do
     rednet.send(detector[id].id,"stair")
     event, senderid, message = os.pullEvent("rednet_message")
         print(senderid.." send "..message)
     if message == "true" then
         return detector[id].niveau
     end
   end
   return nil
end

function send()
   newstair = elevator()
   if newstair == nil then
      sleep(0.5)
      rednet.send(idelevator,"error")
      print("maintenance")
   else
      print("newstair = "..newstair)
      for id = 1,3 do
         rednet.send(screen[id].id,newstair)
      end
      rednet.send(idelevator,newstair)
   end
end

print("send1")
send()
while true do
   print("boucle")
   event, id, message = os.pullEvent("rednet_mesage")
   if id == idelevator then
      send()
   end
 end