Cheat Engine

SleepiDreamer · Cheater Reputation: 0 Joined: 27 Aug 2021 Posts: 41

I have:
-A pointer to a specific address
I want to:
-Find out what writes to this address but using Lua
-Replace that line with NOP (code that does nothing)

I am not very familiar with how Lua execution works in CE, but It'd be best for it to run when a specific value has changed, is that possible? Otherwise, is it possible for it to run when the user clicks a button (or something similar?)

LeFiXER · Posted: Fri Aug 27, 2021 5:49 am Post subject:

SleepiDreamer · Cheater Reputation: 0 Joined: 27 Aug 2021 Posts: 41

thank you so much!

How exactly do I know how many NOPs I need?
is it per address, 1 for each write to a single address, the total amount of writes from all addresses combined or simply the number of addresses?

LeFiXER · Posted: Fri Aug 27, 2021 6:07 am Post subject:

When you find out what writes to this address, a window will popup and instructions will enter the left side of that window. The instruction responsible for dealing with the value you want to manipulate should be selected.
Then click the "Show Disassembler" button. From there, the disassembler window will popup on the line of instructions you want to modify. Count how many bytes on that line in the bytes column, or you can press
Ctrl + Alt + C with the line selected to copy the bytes then paste them to manually count.

Sidenote, I made a small Lua extension to count the bytes so manually counting them isn't required, which is available here:
https://fearlessrevolution.com/viewtopic.php?f=23&t=16793

SleepiDreamer · Cheater Reputation: 0 Joined: 27 Aug 2021 Posts: 41

I've counted the bytes, it seems to be 8 of them, but it still doesn't work.
Any idea on why that could be?

LeFiXER · Posted: Fri Aug 27, 2021 6:16 am Post subject:

What exactly doesn't work? What is your script? I could guess what it could be but it would be better for me to see what you have so I can see what the problem is rather than guess.

SleepiDreamer · Cheater Reputation: 0 Joined: 27 Aug 2021 Posts: 41

LeFiXER · Posted: Fri Aug 27, 2021 7:57 am Post subject:

SleepiDreamer · Cheater Reputation: 0 Joined: 27 Aug 2021 Posts: 41

Maybe there's a better pointer to this setting, but yes, that is a working pointer.
But because there is something writing to this setting, executing the script only works for a single frame, because I need to change the opcode of what is writing to the setting, and not the setting itself.
PS: what's the password for your extension?

LeFiXER · Posted: Fri Aug 27, 2021 9:03 am Post subject:

I can't really advise any further without more information. I don't have the game to even test what you're trying to achieve.

ParkourPenguin · Posted: Fri Aug 27, 2021 11:35 am Post subject:

Use the Lua functions aobscan to find code and getInstructionSize to figure out how many bytes to nop. See celua.txt for documentation.

SleepiDreamer · Cheater Reputation: 0 Joined: 27 Aug 2021 Posts: 41

Thanks!
here's some extra information in case it would be necessary:
The pointers I use have one offset, I found them with 'find out what writes to this address'.
The values are (mostly) all floats
I've found about 175 addresses, each corresponding to a different setting in RTX.
My goal is to make a cheat table that can be opened by anyone and just work (with work I mean you can just change a value and it won't be reset the next frame, aka no extra manual work in CE).
Most settings are 1 float apart (4 bytes)