Cheat Engine

Koblasco · How do I cheat? Reputation: 0 Joined: 04 Oct 2020 Posts: 6

Hi everyone, I'm super new with Cheat Engine so I hope someone can help me out here.

Recently I fell in love with Obscure, a ps2 survival horror game that homages early Resident Evil and Silent Hill titles.
The unique twist is that it's not singleplayer but 2 player local coop!
There's 5 different characters each with their unique attributes and, most importantly, different movement speeds.
As you can expect I got curious and wanted to find out how fast exactly each character was so I downloaded Cheat Engine for the first time and here I am.
Unfortunately, it seems what I'm looking for is a bit more complicated than expected.

While I've been able to scan other simple values (like player and enemy health, weapons/attacks damage etc.), I couldn't scan any values for speed at all.

I managed to find the playable characters structures or whatsitcalled but I couldn't find anything related to speed or coordinates specifically, there were some 4-byte addresses that kept count of what animation you were currently in (idle, walking, running etc.) or what direction you were moving in (up, down, left, right) but that's about it.
One of the characters (Kenny) can even sprint so I thought that could narrow things down but alas, no such luck. Sad

Now to be honest, since I'm new to this forum, I don't know if my post was too long or if I should keep going instead.
For now I'll just stop here and wait instructions so we can hopefully figure this out.

sgsgwv$6263 · Posted: Sun Oct 04, 2020 12:00 pm Post subject:

make your character stand still.
do unknow value search in float.
now make the character jump.
just when the character is in the air and still going up,pause the game and go to cheat engine ,refine your search values with increased value and go back in the game and when the character is going down but is still in air pause the game and go to CE and do a decreased value.You get the idea.Now go on like this till you have a handful of addresses in float.The addresses should not have values with exponential(to take care of that check the simple values option on the top right side of CE).
So basically you are trying to find the Z vector of your character.
Now with the refined addresses that you got just take them down to your cheat table and experiment with them like lock them up and then try to jump,if the game shows that the character's jump is not smooth that is if its not like a regular jump,find that address in the cheat table that is causing that irregular jump when locked and that should be your z vector or upward speed.
The other speeds like x,y speeds should be on consecutive locations,in some games the order is first x,then y and then z.In some other games it could be x,z,y.
Coming to coords,if you have got the speed values,you will have more freedom in finding the coords values.
Although one approach for finding coords values is find a line in your game's plane and then try to go forward in that line and search for increased value and go back and search for decreased values,if this approach didnt get you the coord addresses then reverse the assumption i.e go forward and search for decreased values and go backward and search for increased values....you get the idea.
After doing all these searches ,its important to experiment with them with utmost care coz 1 messed up value can crash your game and you will have to start again.

Koblasco · How do I cheat? Reputation: 0 Joined: 04 Oct 2020 Posts: 6

DanyDollaro · Posted: Mon Oct 05, 2020 6:42 am Post subject:

By analyzing the assembly code that acts on the coordinates you should find an inrent value to the player's speed, but this method could be complex.

You could generate dumps of the players' data structures starting from their base address, if you find the player's life and discover any code that uses that variable be sure to remove the offset, after obtaining the dumps compare them and see what you discover, the speed values can be stored as: floats, doubles or more rarely int.
In addition, be sure to check if there are any pointers in their data structures, if the program is 32-Bit put a (hardware) breakpoint every 4 bytes, and from the type of code that accesses it you can know if it is used as a pointer, for example this:

Koblasco · How do I cheat? Reputation: 0 Joined: 04 Oct 2020 Posts: 6

Koblasco · How do I cheat? Reputation: 0 Joined: 04 Oct 2020 Posts: 6

SOLVED!

After finding the character X coordinate address, I did a memory scan and changed "display type" to float.
After moving around, it became evident there was one address related to movement and that's how I finally found the speed address.

The reason it was tricky to find is that animations don't have a static speed value but it changes throughout the various keyframes of walk/run cycles so I always overlooked it.