Cheat Engine

[Punz1A4]

There is a lot of addresses going through op code i wanted to alter so I needed to filter them out somehow.
Found a constant value held in a structure pointed by an address nearby to the one I want to modify via script however code below crashes the game very often (not instantly though).

[OldCheatEngineUser]

0x00 means an address, and im not sure if lua accept this syntax for addressing.

if you wanna compare a value in a register, then you can use these two simple ways:

- cmp [reg+off],imm value
or
- cmp [reg+off],reg

[Punz1A4]

I've checked - it's not that. I think I remember DB saying that the 0x is just a notation that makes the numbers that follow hexadecimal. The difference is that CE defaults all numbers without # before them to hex, so 0x is optional. I just use it to remind myself the notation is hexadecimal.

As for the problem, I used "find out what addresses this instruction accesses" on the line that causes crashes and just before an other crash there was address listed with value "???".

So while I'm not an expert in assembly, I think it's kinda like, say, using null object in a statement in java, which causes NullPointerException. That's why you have to check if the object being used is null in the first place.

I don't know how to mirror that behaviour for my current problem though....

Also since [edi-30] holds a pointer only in some cases then is there a possibility that [edx+4] will check address that lies outside the currently attached process, resultin in the "???" value? If so how can I prevent that.

[ParkourPenguin]

http://forum.cheatengine.org/viewtopic.php?t=511049

[OldCheatEngineUser]

[Punz1A4]