Cheat Engine

[deama1234]

I'm doing some calculations in the FPU, and I need the result to be an int, so I use "fistp [hp]". Problem is, if the calculations result in a float of "-50" and it converts it via "fistp [hp]" then it comes out as 4294967296 (or something like that) and then that screws up the rest of the calculations.

How would I convert 4294967296 to a 32int signed?

[Gniarf]

0xFFFFFFCE = 4294967246 (read as an unsigned integer) = -50 (read as a signed integer). You don't have to convert them, just look at them differently. If you're checking the result of your calculation in CE and it shows you a 4294967246 in your cheat table, right click on it->show as signed.

As for your calculations, you have to tell the next instruction to read your number as signed integer. If the next thing you do is a cmp, know that cmp+ja/jb does unsigned comparison and cmp+jg/jl does signed comparison.

[deama1234]

What if I have something like:
mov ebx,[hp]
add [eax+4],ebx
how would I tell it to read it as a signed?

[mgr.inz.Player]

The ADD instruction does not distinguish between signed or unsigned operands. Instead, the processor evaluates the result for both data types and sets the OF and CF flags to indicate a carry in the signed or unsigned result, respectively.

http://www.jaist.ac.jp/iscenter-new/mpc/altix/altixdata/opt/intel/vtune/doc/users_guide/mergedProjects/analyzer_ec/mergedProjects/reference_olh/mergedProjects/instructions/instruct32_hh/vc7a.htm

[deama1234]

[Gniarf]

[deama1234]

Mmm, yeah. Should of made it clear, sorry; brain was still melted.