Need Help With If Loop

I posted in the correct forum for peripherals but never got a response and the post below me didn't get a single response since oct 4.

Well anyway is there a way to do a code like this as for some reason the : breaks it but the item I'd requires it.

If Id == 227:3 then
Enter code here
end

How can I do this while still having the : in the code?

Here's link to orriginal post
http://www.computercraft.info/forums2/index.php?/topic/15535-miscperipheral-thermal-glasses-and-me-bridge/page__pid__148462#entry148462

Is the ID a string?

In MiscPeripherals, any item that has a damage value get encoded in some way, I've wrote a quick little function to decode it.

function mpDecode(nInput)
	return bit.band(2^15-1, nInput), bit.brshift(nInput, 15)
end

You would use it like this

local id, dmg = mpDecode(numberReturnedByMiscPeripheral)

So for item id "227:3", your code would look like this…

local id, dmg = mpEncode(98531) '-- That is the encoded value of 227:3'
if id == 227 and dmg == 3 then
    '-- Do stuff'
end

In addition to what Anavrins said… There is also a seed in MiscP which can be changed, as such this is a set of helper functions that NeverCast and I have used in the past.

local itemSeed = 0

function setItemSeed( seed )
  itemSeed = seed
end

function getItemFromUUID( uuid )
  uuid = bit.bxor(uuid, itemSeed)
  local meta = math.floor(uuid/32768)
  local id = uuid % 32768
  return id, meta
end

function getUUIDFromItem( id, meta )
  local uuid = (meta or 0) * 32768 + id
  return bit.bxor(uuid, itemSeed)
end

The usage is the same (except different function names of course)

local id, dmg = getItemFromUUID(98531)
if id == 227 and dmg == 3 then
	--# do stuff
end

Well the items I'm listing aren't damage based. Like for example coal is 263 and charcoal is 263:1.

Thanks for the help and I'm assuming the codes will still work for my purposes. If not can you please give example of one that will?

subzero22, on 13 October 2013 - 01:00 AM said:

Well the items I'm listing aren't damage based. Like for example coal is 263 and charcoal is 263:1.

That is damage value a.k.a. metadata.