Cheat Engine

Zhoul · Posted: Tue Oct 25, 2005 1:30 pm Post subject: "Value Between" and Floats

I am currently working on Black and White 2, which makes use of a lot of floats. I'm attempting to do a "Value Between" scan, and see that I am unable to use negative numbers.

The funny thing, is that if I leave a negative number in the box while doing any other type of scan, then change to a "Value Between" scan, the first value is allowed to stay negative, however I cannot set the 2nd value to a negative number (hitting - does nothing. Tried Copy/paste as well)

Thanks,

- Zhoul

Zhoul · Posted: Tue Oct 25, 2005 1:43 pm Post subject:

Also affecting "Bigger then" scans

Zhoul · Posted: Tue Oct 25, 2005 5:54 pm Post subject:

In working with floats, I must say that something is terribly wrong, either in the code that works with them, or some setting on my PC (such as number formatting).

I'm searching for floats that range from 1 to -1 (usually numbers like 0.569492342). I know a certain number is around -0.94 . When I finally widdle the list down, my number does not appear anywhere, and other numbers like..

5.89323423423E-43 are appearing, even after doing "Smaller Then 1" scans.

It appears to really have an issue, if I do searches for numbers that go past 2 decimal places.

To speed things up, I'm doing truncated scans mostly, but im not sure if your code truncates up to the last character I'm searching for, or if it truncates at a set decimal place /shrug

Suggestions?

Dark Byte · Posted: Tue Oct 25, 2005 11:26 pm Post subject:

you are using 5.1.1 ?

The_MAZZTer · Posted: Wed Oct 26, 2005 5:56 am Post subject:

Zhoul · Posted: Wed Oct 26, 2005 11:18 am Post subject:

Ahhh, I've never seen E+ , so I figured the program was replacing the E+ with an E- , then the scan would pick up any value with E- , because it had a - sign in it.

And yeah, 5.1.1 .

Zhoul · Posted: Thu Oct 27, 2005 10:13 am Post subject:

Dark Byte · Posted: Thu Oct 27, 2005 10:29 am Post subject:

-7.68877529168708E24=-7688775291687080000000000
5.89323423423E-43=0.000000000000000000000000000000000000000000589323423423

it depends on your scan, if you scanned for smaller than 1 then both fit the requirements

Oh yes, regarding the E
See it as : Move the decimal seperator XX ammounts to the right. (so a negative E value moves it to the left)

Zhoul · Posted: Thu Oct 27, 2005 12:09 pm Post subject:

I think the main reason I thought/think there could be an issue, is because when I was searching for negative floats, numbers like 5.89323423423E-43 were coming up. According to your definition, that number is still positive. No?

I'm all about knowing E notation, it just appeared odd to me that there was no rhyme or reason to its use in cheat engine, or the reporting there of.

SunBeam · Posted: Thu Oct 27, 2005 9:18 pm Post subject:

Hi. I am currently hacking the same game. I must say I never thought about Floats. I mostly use 4 bytes/2 bytes for bars...

All I found for B&W2 is 4 bytes related, and trust me most of it all is Very Happy

...

Zhoul · Posted: Thu Oct 27, 2005 9:25 pm Post subject:

Riiight...
Take a look at my B&W2 table
http://forum.cheatengine.org/viewtopic.php?t=4073

As you can see, all things related to creature stats are indeed floats. Sure, they could be 'found' as 4 byte values, but that doesn't mean the game defined them as such. Also, It would be very confusing to 'work' with the values in 4-byte form, as opposed to float form.

The pointers in that table work with v1.1 - so give it a go yourself.

Now you are right in that the majority of values in the majority of games work with 4-byte values, but surely , not black & white 2.

On my most updated table (not yet on this site) there is only 1 value that is set as a 4-byte value, and thats the tribute value. Why? Because tribute is, at least to some extent, encrypted. So the easiest way for me to modify it is in its 4-byte form.

Cheers