Cheat Engine

legoblock · How do I cheat? Reputation: 0 Joined: 01 Jun 2011 Posts: 9

Specifically I would like to hook IDirect3DDevice9::BeginScene.

Here is (basically) the code I have so far, using Microsoft Detours.

hcavolsdsadgadsg · Posted: Thu Jun 02, 2011 7:53 pm Post subject:

that cast is undefined behavior i think.

the easy way is to just create a non member function as a wrapper and pass that.

legoblock · How do I cheat? Reputation: 0 Joined: 01 Jun 2011 Posts: 9

But then how can I hook it?

hcavolsdsadgadsg · Posted: Thu Jun 02, 2011 9:00 pm Post subject:

wrap the member function in another function and pass the instance of the class to your function wrapper function and use that as the function that you pass to the detour.

snort.

i've never used the detours library so i'm running on the assumption that you'll need to do something similar to using a member function for CreateThread()

legoblock · How do I cheat? Reputation: 0 Joined: 01 Jun 2011 Posts: 9

No like, I have to pass the address of the function I want to hook. If I do that, won't my wrapper function get hooked instead?

EDIT: Apparently I needed to use the class' vtable. It's all good, thanks! (can't post the link that helped me yet)

atom0s · Posted: Fri Jun 03, 2011 1:20 pm Post subject:

Keep in mind Direct3D API uses __stdcall for almost all of its definitions, you need to follow their conventions or you will run into issues.

If you want to hook just a single specific function, obtain the vtable pointer for the device and overwrite the vtables pointer for that function at the proper offset. If you still need more assistance, there are quiet a few threads over on GameDeception that cover this. I would recommend not posting for help there though as you will land up just getting flamed.