Rednet.receive arg

My idea is for rednet.receive to have another argument: ID. I know you can do this with a little extra coding, but having the filter built in to the same line would make it a bit more convenient, like:

local id, msg = rednet.receive(nil,21) -- would nil work as a placeholder?

It would allow "private" rednet conversations to be a bit easier.

interesting not sure what the best way to do something like that is :)/>/>
maybe

local orec = rednet.receive
function rednet.receive(ID,timeout)
  local start = os.clock()
  local sid,msg,dist = nil,nil,nil
  while os.clock() < start+timeout do
    sid,msg,dist = orec(start+timeout-os.clock())
    if not ID or sid == ID then break end
  end
  return sid,msg,dist
end

(untested)

Or one could adapt the original function (which wouldn't require saving the old one):

function receive( nTimeout, nID )
local timer = nil
if nTimeout then
  timer = os.startTimer( nTimeout )
end
while true do
  local e, p1, p2, p3 = os.pullEvent()
  if e == "rednet_message" and ( not nID or p1 == nID ) then
   return p1, p2, p3
  elseif e == "timer" and p1 == timer then
   return nil, nil, nil
  end
end
end

Actually, id should be the first parameter, but for compability, it's better that way round.

Xfel, on 08 July 2012 - 01:29 PM said:

Or one could adapt the original function (which wouldn't require saving the old one):

function receive( nTimeout, nID )
local timer = nil
if nTimeout then
  timer = os.startTimer( nTimeout )
end
while true do
  local e, p1, p2, p3 = os.pullEvent()
  if e == "rednet_message" and ( not nID or p1 == nID ) then
   return p1, p2, p3
  elseif e == "timer" and p1 == timer then
   return nil, nil, nil
  end
end
end

Actually, id should be the first parameter, but for compability, it's better that way round.

Sure one could, was too lazy to pull that out though :)/>/>

That's what I had in mind. That's why I asked if rednet.receive(nil,id) would work for indefinite times.