Cheat Engine

sir-gunny

Hi.

I want to add (float)50000 to [eax] with this asm:

add [ecx+94],(float)50000

But it dont work.

If i use mov, it writes the value perfect.

how can I add (float) 50000 to eax?

mgr.inz.Player · Posted: Mon Oct 15, 2012 6:02 am Post subject:

You wrote, "add to [eax]"

solution 1:
add [eax],(float)50000

Then you wrote, "add to eax"

solution 2:
add eax,(float)50000

Dark Byte · Posted: Mon Oct 15, 2012 6:19 am Post subject:

ADD doesn't work with a floating point addition

I usually use ADDSS

I guess the usual fpu instructions can be used as well, but I find them more complex to use than sse

sir-gunny · Posted: Mon Oct 15, 2012 10:40 am Post subject:

Hi Dark Byte.

If i use addss [edx+000000C4],(float)50000, i get an error: This instruction can't be compiled.

Whats wrong?

Dark Byte · Posted: Mon Oct 15, 2012 11:29 am Post subject:

the problem with addss (and other sse instructions) is that it must use a xmm register as destination and a memory address or other xmm register as source. No direct assignments either

so try something like this:

sir-gunny · Posted: Mon Oct 15, 2012 12:31 pm Post subject:

YEA!!! It works!!!

Dark Byte you are the godfather of ASM and GameHack!!!

Big THX Smile

mgr.inz.Player · Posted: Mon Oct 15, 2012 1:12 pm Post subject:

uhm, sorry, I though it was integer. I just made quick reply too quick.

Btw. there are other ways. For example I used for other games where values were floats but they have always integer values.

And there is e.g.:
movss [edi+04],xmm0

and I want [edi+04] to be 5000 bigger, I use this

push eax
cvttss2si eax,xmm0
add eax,(int)5000
cvttsi2ss xmm0,eax
pop eax
movss [edi+04],xmm0