Cheat Engine

[chrisjarram]

Hi DarkByte,

I've had quite a few problems with the pointer scanner value search when looking for floats and the like. Typically I look for vals between 0 and 1, but can you confirm how the match works? I can't seem to get either truncation or rounding working 100% of the time. E.g. sometimes I can see before me there are pointers correctly pointing to the value 0.87, but if I assume rounding and search for 0.9 it gets rid of them, other times I have had a similar thing, I've searched assuming truncation, e.g. 0.8, and still they are removed. Can you please elaborate the exact way this works?

Also, can you possibly hint at what the 'Improve Pointer scan with gathered heap data' option does, as I can't find any docs for it?

Cheers!
Chris

[Dark Byte]

weird, the value scan uses the truncated scan method
0.8 should find everything between 0.80000 and 0.899999
0.87 should find everything between 0.870000 and 0.879999

and you did select the proper type ?

as for the heap data:
Windows provides an allocation method called the heap, you can use it to allocate small chunks of memory (smaller then 4kb) without windows allocating a full 4KB page for it

the pointerscan can get a list of all the allocations in the heap region and find out the offsets using that information. So it doesn't have to guess at what the offsets are and thus returns a smaller result set that should be valid.

The heap is often used to allocate C++ classes

Of course, the heap isn't always used, for example some applications choose to manage the smaller memory allocations themselves instead of letting windows handle it.