Cheat Engine

ColonelRVH

How do you find address that changes only once?

For example:

In Red Alert 2, you can use Spy on barrack to rank up the training by 1. And can only done once per match.

And of course, the address for RA2 isn't static. It changes every match.

So how do you do it? Is there any way to work around this?

ParkourPenguin · Posted: Fri Oct 23, 2015 9:41 am Post subject:

You could try the pointer scanner if you're sure of what the initial and the final values are. Open up the memory view (Ctrl+M), then open up the pointer scanner (Ctrl+P), start a new scan (Ctrl+P), and select "value to find". Scan it, change your value, then rescan your pointer list with the new value. Using this, you might be able to find a pointer to the value you're looking for that's consistent between matches.

If the pointer scanner doesn't work out, I can't think of any easy way. You can search for the initial value hundreds of times while you're playing the game and not changing the value you're trying to find, then just change it and immediately scan for your new value. This might lower the number of results to anywhere from less than a hundred to a few thousand.

Then, it's just a matter of guessing. You could find some other values that are somewhat related to it (e.g. health and maxhealth, mana and maxmana), and the address you're looking for will probably be near that other address. This can help you guess which value you're looking for.

If you don't want to spend the time to guess, you could find values kind of related to it, then look through the structure that value is a part of, and you might be able to find it if you're really lucky. More likely than not the value you're looking for is in another structure that may or may not be easy to find from your current structure.

Zanzer · Posted: Fri Oct 23, 2015 10:16 am Post subject:

Maybe you'll get lucky and you can simply find the barrack's health value.
Take a very large AOB screenshot of its base address before and after the spy.
There may exist a flag in that same structure that determines whether a spy has already been used.

Gniarf · Posted: Fri Oct 23, 2015 3:27 pm Post subject:

This game is moddable so grab the mod tools and see if you have a way to make the spy's ability reusable, or if you can just boost its effect.