Cheat Engine

[thethiny]

I have this AOB:
41 73 73 65 74 5C 43 48 41 52 5F which translates to Assets\CHAR_
I want the user to be able to input a custom name he wants, such as "Subzero_A" and then ask the user what to replace it with "such as Mod\Mod1".
Then the script will search for (AOBScan) 41 73 73 65 74 5C 43 48 41 52 5F and then get the name the user did input as AOB (Subzero_A will become 53 75 62 7A 65 72 6F 5F 41) then add .xxx (2E 78 78 7, and the replace everything starting from the beginning (41 73) with what the user wrote the 2nd time (Mod\Mod1). Is this even possible?

I was thinking about something like this:
aob_replace = {User input 2 in hex}
aob_original = {User input 1 in hex}
aob = AOBScan("41 73 73 65 74 5C 43 48 41 52 5F * * * * * * 2E 78 78 78")
for i=0, aob.Count-1 do
writeBytes(aob[i], unpack(aob_replace))
end

But the thing is that the scanned AOB can vary in size and it can be as long as 3 bytes up to 24 bytes.
So in other words, I'm trying to get a script that searches for an Array of Bytes which the user inputted, and allow him to replace it with another Array without him knowing the address, because I couldn't find the Base Address anywhere.

[Zanzer]

Looks like my script.

May be able to do something like:

[thethiny]

[Zanzer]

Not quite. It will replace whatever the bytes 41 73 etc. were.
The function string.byte returns the bytes of the string. 0 tells it to start at index 0, -1 tells it end at the string length.
The code will replace the string with whatever the user entered.
If the game is case sensitive then your user will need to enter the string correctly.

[thethiny]

Thanks, I will try that and get back to you here.
But there's still one thing, the "* * * *" part is basically, any byte, right? What if this amount is able to expand/conteact?

[Zanzer]

The null terminator should prevent the game from trying to read any more of the string.
No matter how many additional non-zero bytes still exist past it.

[thethiny]

So eventually I've settled for this code:

[Zanzer]

If your AOB is for "Asset\CHAR_" it will find all of those occurrences.
If your user types in "MODS\JohnnyMOD_H.xxx" (the full thing), it should replace the way you want.
However, if you only want to change the word "Asset" to "MODS" then that's a different script.

[thethiny]

[Zanzer]

That's what I meant by you needing to type in the FULL string.

If there is ANYTHING you want to keep after text you prompted, then you need a different script.

For example:
Asset\CHAR_Subzero\Movement

If you only wanted to change "Subzero" but keep "\Movement" then you need a different script.

If your user actually types in "Subzero\Movement" then you're fine.

[thethiny]

I think I need the other script. I just want to replace everything up until .XXX but keep the text after.

[Zanzer]

Then you'll need to provide me with the actual strings you're expecting.
I need something to tell it to stop replacing characters from this point on.

[thethiny]

If I tell you what I want to do actually will you be able to do it? I don't think it'd be something nice to do since this way I'm making you do all the work while I'm doing nothing.

[Zanzer]

Well, you'll want to use readString() at each aob[i].
Then, use string.gsub() to replace only the portion you want.
Or use string.find() to get to the '.' or '/' delimiter after the portion you want replaced.
Then use string.sub() to extract what you want to save and concatenate it with the user input.
Finally, use writeString() to insert the full, modified string back into the game.
http://lua-users.org/wiki/StringLibraryTutorial

[thethiny]

Can you give me a usage example? I'm not able to perform the string.gsub on my results of the AOBscan. I've checked the wiki link and I understood the way the commands work (except for readString for I haven't found anything that teaches that).

I tried this to avoid loops, but I don't think it's getting the right address.