I have seen several people talking about EUDs, and was wondering what they are. Unfortunately, I can't find their entry in the wiki as when I search for it, it says the search string needs to be at least four characters long. (Wtf, by the way.) Nor can I find it manually. What exactly are they? Do they involve mods?

EUD's stand for extended unit death. To the last part, no, it is not a mod. It is a buffer overflow in the deaths (ie. player has suffered x deaths of unit; Modify death counts for player x....) conditions and action. EUD conditions detect things in starcraft's memory, such as mouse position and unit health. EUD actions change things in starcraft's memory, such as icons, damage, and so on and so forth.

However, EUD actions have been removed as of patch 1.13, so if you want to use them, you have to downgrade to 1.13. In EUD conditions, instead of having a unit name in the unit deaths box, you put a number. To do so, you can write the condition in Farty's EUD trig, then load the trigger with SCXE, or you could do the same with starforge.

http://www.staredit.net/?p=search
Search for "eud" in "UMS Assistance". Only search for "Topics" (not "Topics -> Posts")
Although search function for some reason only finds very few topics that would match your search you should always check it first.
Many general questions are asked over and over.

Will remember in the future.

So if they don't work in anything above 1.13, it probably wouldn't be useful to use them on a multiplayer map... *swears loudly*

Anyway, thanks y'all.

Well actions, not conditions.

So you can still use EUDs as conditions in the current patch? *eye twitch* I only needed it as a condition, I have been trying to figure out how to detect where a Scanner Sweep goes off. (And I have tried almost everything else, btw.)

So, how would I detect this? Is it possible? If so, does anyone know how to do it? (Or do I have to find out myself, in which case how would I go about finding out?)

It's probably not practical, since to start with you can only say "if a Scanner Sweep goes off here", and 'here' has to be a pixel point. You can't store the event as a location and say "do action at {scanner sweep location}"

There's probably something in the EUDDB that you can use instead, but it also will tell ya how to do it, but you'll need a lot of reading to figure out how to do it. I wouldn't recommend using EUDs for this. Write a mod instead, like Tux is doing for Rush 2 (and uses an extremely fast invisible air unit as a pointer.)

EUDs are on the death counter page of the Wiki. http://www.staredit.net/wiki/Death_Counters#EUD

SC 1.15.0 and 1.15.2 have the same death table entry point. Therefore you may use uBeCalc to calculate player # and unit to make the triggers, based on Farty's table.

Or you can download EUDTrig which can export them as *.trg file.

Also, unit position is a 2-byte short, which means that it reads both X and Y at the same time... You can read a range of X values, but not Y values (unless you want it to ONLY detect Y, and not X.)

Can you Detect Sprites with EUDS????

Probably, but since sprites are preplaced or placed by triggers it doesn't really matter now does it?

Is it possible to make a unit that cant attack attack with a EUD? You know like a Kakaru?

No.

You could make units that already can attack, use different effects and damage values.

Not in the latest version of SC. Only 1.12b and previous.

But don't EUD's get scrambled with every patch?

Yes.

Not every patch. And Blizzard doesn't restructure the data all the time, so the addresses may change but the actual triggers may still work.