GUID...Need some help.

[Pixion]

Hello everybody.

I searched for long time, and maybe i didn't understand, but please, i need some help to understand some things...

I started to learn what is Memory Reading this week, but i'm french and i couldn't find guids to help me.

I saw you're, near all, using VB or C language.
I'm personnaly using AutoIt and for the moment, my BOT can Save Waypoint list, load it, walk trough the waypoints and it can try to unstuck the character.

So, for the moment, i only used these three-level pointer:
EI = 0x127E014
X = [[[[0x127E014] + 0x30] + 0x28] + 0x7D0]
Y = [[[[0x127E014] + 0x30] + 0x28] + 0x7D4]
Z = [[[[0x127E014] + 0x30] + 0x28] + 0x7D8]
Rotation = [[[[0x127E014] + 0x30] + 0x28] + 0x7DC]

First, i found others adresses on a forum, wich is, for X, 0x012E1B7C.
Is it different ? Wich should i use ?

Ok, now, i want my bot to "spam" TAB key to find mobs, and i want it to retrieve the X Y Z position of the mob.
I found here [3.0.3] Offsets, Addresses, Etc, again, a Target GUID adress.
But here is the problem: i can't understand WHAT TO DO with that long number.
I saw and mmowned forums that i have to compare it to my GUID or something else, but i don't understand.

So please, can someone tell me a bit more about this "GUID" ?

Thanks for your help, and gratz for your help topics, but i don't understand ALL..

And sorry for my bad english.

Pixion.

[arigity]

a GUID is a unique ID for a specific unit. and what their are probably talking about in that link is using the object manager to find the base address of the object by its GUID.

the concept is simple, all objects are stored in a linked list, you loop through the list checking the current objects GUID with another GUID (such as your targets) til they match and then get more detailed information from them.

i don't have any example of this but there are plenty on this forum which you can directly copy/paste

[Pixion]

Ok, if i understood, a GUID is an ID, like an ID in a, for example, MySQL Database.
And, for this GUID, there are specifics "columns" like ID (our GUID),X, Y, Z, Name, Faction, Health Max, Current Health... Is it right ?

I prefere a confirmation, because if it's really not that, i will go in the wrong way.

EDIT: Gave you +Rep because i can see you're name in many questions topics. Thanks for your help.

[RawrSnarl]

Right. A GUID is basically the numerical, unique name for an object. But don't confuse the GUID for the object's base address, which is the actual address you'll be using to obtain the "column" data you specified.

[Pixion]

Ok, and could you answer my first question please ?
What is the difference between the different adress i found for XYZ ?

[arigity]

the difference between the static address and the dynamic one is that the static one is just used for reference, modifying it won't affect you. its good if you want to get your coords but not so useful if you want to modify them or get someone elses.

[Pixion]

Oh ok, understood.
These adress, static and dynamic, change with patches ?

[arigity]

yeap they differ from patch to patch. but the offsets won't change (usually)

[Pixion]

Ok, i won't keep attention on how to find theùm next time for the moment i think...

So, for every GUID, i suppose there is an adress.
And we can find X, Y, Z, doing so:

TARGET GUID = 0xXXXXXX
X TARGET = 0xXXXXXX + 0x4
Y TARGET = 0xXXXXXX + 0x8
Z TARGET = 0xXXXXXX + 0xC

Is it right again ?

[Sillyboy72]

First, let me say... I freakin HATE that we use the term guid. guid's are freakin' 16 bytes GLOBALLY unique id's. guids here... 8 bytes. grr.

Anyway, given a GUID, you need to iterate over the object list to find the actual object associate with that guid. my code for that:

DWORD ObjectAddressFromGuid(LONGLONG Guid)
{
	DWORD First = ReadDword(Mgr + 0xAC);
	DWORD Current = First;

	while ( Current && (Current & 1) == 0 )
	{
		LONGLONG ObjGuid = ReadLongLong(Current + 0x30);

		if (ObjGuid == Guid)
			return Current;

		Current = ReadDword(Current + 0x3C);
		
		if ( Current == First )
			break;
	}

	return 0;
}

Not super sure where x,y,z are relative to start of object. I have this in my n00b code, but I am skeptical

		float x = ReadFloat(Current + 0x7d0);
		float y = ReadFloat(Current + 0x7d4);
		float z = ReadFloat(Current + 0x7d8);

[argh44z]

First, let me say... I freakin HATE that we use the term guid. guid's are freakin' 16 bytes GLOBALLY unique id's. guids here... 8 bytes. grr.

It is what Blizzard calls them.

Anyways, not all types of GUID are necessarily of the UUID format/size/etc. That's what you're referring to.

[Pixion]

DWORD ObjectAddressFromGuid(LONGLONG Guid) ; This is the function
{
DWORD First = ReadDword(Mgr + 0xAC); ; I can't understand what represent Mgr here, and where it was declared
DWORD Current = First; ; Ok Current = First

while ( Current && (Current & 1) == 0 ) ; This is where you're "scanning" to search the GUID we've got
{
LONGLONG ObjGuid = ReadLongLong(Current + 0x30); ; This is to read last adress, + 0x30 OK

if (ObjGuid == Guid) ; if ObjGuid we found = our NPC GUID, then it's ok
return Current;

Current = ReadDword(Current + 0x3C);

if ( Current == First ) ; if it did'nt change, nothing..
break;
}

return 0;

}

I hope i'm right, and thanks for you're help to.

Pixion.

PS: I'm not very well in C, but i think i understood here.
There is just a problem with Mgr, i don't understan what is it.

[arigity]

object manager.
see [Tut] Using Object Manager (or otherwise pick a random thread in this section and chances are its got a description there.)

[Pixion]

Ok, thank you, i'll see that.

[Gamer]

Ok, i won't keep attention on how to find theùm next time for the moment i think...

So, for every GUID, i suppose there is an adress.
And we can find X, Y, Z, doing so:

TARGET GUID = 0xXXXXXX
X TARGET = 0xXXXXXX + 0x4
Y TARGET = 0xXXXXXX + 0x8
Z TARGET = 0xXXXXXX + 0xC

Is it right again ?

Make sure you don't fall under the misapprehension that the GUID is an address or offset. It's simply a unique identifier, not a memory address so you never add anything to it or read from it.

Each player character has a unique identifier that stays with the character until it is deleted (or transferred to a different account I believe). The actual memory address on the other hand will change every time you zone/log out etc.