Cheat Engine

[FedeXZY]

Hi everyone, need help for a basic script i need for changing an address value.

In the game "settings menu" there are sliders that modify values (like precision or speed) and i would love to make a script to change those values during gameplay.
I could find those addresses easily plus they are always the same, no floating point stuff needed. I tried to modify manually values and it worked.

Then i tried to make a script, i used "find out what writes to this address" and i got one instruction "mov [rax+rcx*8],r12d", so i made an auto assembled script using code injection and under newmem i put mov r12d,3 in order to change value to 3.

Unfortunately this method doesn't change the value immediately, it only change the value to 3 after i manually trigger the game settings menu slider.

So i tried to "find out what accesses this address" and i kinda understood what is going on by replacing with code that does nothing....

144DEFE2B - 8B 34 C8 - mov esi,[rax+rcx*8]
144DF089F - 44 3B 24 C8 - cmp r12d,[rax+rcx*8]
144DF08A5 - 44 89 24 C8 - mov [rax+rcx*8],r12d

first instruction (x3) responsible for updating the value visually on the slider

second instruction (x1) is like a check, but disabling it does nothing i could see

third instruction (x1) is for real value

Am i missing something? there are better ways to change address value with a AAscript?

Pls guys, try to help me. Thanks in advance.

[ParkourPenguin]

[FedeXZY]

"Does changing it during active gameplay without going to the settings menu affect the game?" Yes it does but only when i change value manually without any script.

I mean, i'm not interested in having the value shown correctly on the setting menu, i only want to change value during gameplay.

I suspect that that instruction result is bounded with the other two and they affect each other in some way so that only manually insert value works bypassing some stuff.

There are no methods to make a script that only change address value without starting/passing from a instruction?

[ParkourPenguin]

The instruction that writes to the address is bad since it only gets run when you change the slider.

If changing the value manually works outside the settings menu, then some other instruction must be accessing that address. Use that instruction instead.

[FedeXZY]

I tried to merge the two script (real and slider values) and i found out that now, when i activate the script, the value change immediately as i wanted.

This means that the addresses and instructions are the good ones, they only have to be activated simultaneously.

BUT, as i'm a noob, i merged those scripts badly so that some other values of the game got strange numbers....

So i tried again to merge into one script more accurately but now i don't get the same effect as before.

Can somebody overview my script? What can i do to make those two scrips to activate at the same time?

code n.1 for real value

[ParkourPenguin]

[FedeXZY]

Thanks ParkourPenguin for your replies, i appreciate it very much.

I don't have enough knowledge to make it work unfortunately, i give up.

I don't understand why there's no possibility to change address value without passing from an instruction.

[cooleko]

As mentioned above, you are very close to finding the solution.

There are multiple paths you can follow from here to get your solution.

First you find the address. Once the address is known (such as by accessing the slider), you can figure out where it is stored in memory and reference it there. As you mentioned, you can't rely on an AOB that is only called when the slider is accessed, because then the slider has to always be used to get it. But as a starting point this opens up the next steps!

That could be a static pointer, it could be finding another instruction that accesses the value, or it could be finding another instruction that accesses the structure around the value.

With a pointer you just set the value it points to.
With the direct instruction you can use an AOB and set it to always use your preferred value instead.
With the indirect instruction, you can use an AOB to set a specific memory location with the address and simply reference that location with a LUA loop or reference it in your table and freeze it.

So, for each, try:
Use pointer scanner on the address once you found it using the slider.
Find what accesses this address on the address once you found it using the slider.
Find what accesses this pointer on the header of the pointer holding your address that you found using the slider.

They all likely work, so whichever is easiest for you to learn from is the best.

To try and aid your visualization, you can imagine there is a massive structure, "Game State", which holds your settings values in a "Settings" structure, which holds your slider value at [+ZZ].

There is a pointer that points to [[[Game state+XX]+YY]+ZZ] which is your value.
Or there is an instruction that touches [Settings] when you start the game, which you can steal the pointer from and add ZZ to have the correct address.
Or there is an instruction that touches [Game State] all the time during the gameplay where you can simply navigate +XX,+YY,+ZZ to access your value at any time.

Lastly, if none of the above works, you can always try to find some AOB that points to the block of memory holding your slider values in it even if no instruction is used. This could be as simple as noticing that your slider values are always preceded by AB BB CE 00 11 22 33 CE BB AB and you can find that memory address and add the offset from there to your value.

For any problem there is pretty much an infinite number of solutions, just find the easiest one that works for you.

Also be aware that if the game only references the values once (such as when you press play), then no matter how much you edit it afterwards, it will never take effect. So you may have to ensure the cheat is active before the last time the value is accessed or you will never make progress.

[FedeXZY]