How can i get the name of the player that left the group

[apocalipsus]

Hello all.
I've just recently start creating addons for the game, and therefor im still a newb.
I was wondering how i can get the name of the player that just left the group (party or raid) I was messing with the "PARTY_MEMBERS_CHANGED" event but no luck so far

Thanks in advance

[Malsis]

A common requirement of several software projects I've worked on is 'What was here before but isn't now?'

The easiest way, if the API doesn't actually give you a hook, is to keep a state table - in this case, all party members - then you can check that to see if one or more are no longer there.

Withoutlooking it up, I'd guess there's a PARTY_CHANGED type event, which you could use to trigger the check.

[apocalipsus]

Originally Posted by Malsis A common requirement of several software projects I've worked on is 'What was here before but isn't now?' The easiest way, if the API doesn't actually give you a hook, is to keep a state table - in this case, all party members - then you can check that to see if one or more are no longer there. Withoutlooking it up, I'd guess there's a PARTY_CHANGED type event, which you could use to trigger the check.

Hey there.
Thanks for the reply. That was exactly my idea atm, but im not sure if it is too practical, or if it's consuming unnecessary resources.

Im saving a table with all the raid members, and im watching the event i mentioned before ("PARTY_MEMBERS_CHANGED") so if the new number of members is less then the table size i know someone just left, and im comparing both tables to check who left, then do stuff (including removing that player from the table)

Wonder if this is a bad thing :/

[Ketho]

Another solution is to register for CHAT_MSG_SYSTEM and look for this GlobalString

LEFT_PARTY = "%s leaves the party."

Although I don't know myself how exactly it should be done with format or strfind, I still don't understand that part

[NitraMo]

Originally Posted by apocalipsus Hey there. Thanks for the reply. That was exactly my idea atm, but im not sure if it is too practical, or if it's consuming unnecessary resources. Im saving a table with all the raid members, and im watching the event i mentioned before ("PARTY_MEMBERS_CHANGED") so if the new number of members is less then the table size i know someone just left, and im comparing both tables to check who left, then do stuff (including removing that player from the table) Wonder if this is a bad thing :/

Sounds like a legitimate way to solve it.

[SDPhantom]

Originally Posted by Ketho Another solution is to register for CHAT_MSG_SYSTEM and look for this GlobalString LEFT_PARTY = "%s leaves the party." Although I don't know myself how exactly it should be done with format or strfind, I still don't understand that part

I've worked on this kind of function a few times, although during my recent remake of it, I abandoned it during a debug phase. The purpose was to recompile a format string into a pattern string for use with string.match(). The design of it was to give it the format string and the result string of the format and it would return the argument list, acting in reverse of string.format().

This function was to make localizations easier by providing a method in which it wasn't necessary to add different patterns for different locales. Also to cut down on CPU load from repetitive use, the function would remember what format strings it had already recompiled. Calling it with the same format string, it would only recompile it once, then just keep returning the same pattern string.



To provide a solution to the OP right now, this should do the trick.

local frame=CreateFrame("Frame");
frame:RegisterEvent("CHAT_MSG_SYSTEM");
frame:SetScript("OnEvent",function(self,event,...)
    if event=="CHAT_MSG_SYSTEM" then
        local name=(...):match("(.+) leaves the party.");
        if name then--  Will be nil for any other message
--          Do stuff here
        end
    end
end);