Cheat Engine

[Frouk]

when i call functions from lua(executeCodeEx, executeMethod), it will crash after many calls of the func at the same time, and i didn't saw how it will behave when i will call it from asm script

[Dark Byte]

maybe the function you're calling isn't thread safe and can cause a conflict when the main thread of the game accesses something related to that function

e.g: (games don't code like this these days but see it as an example)
you have a 2 byte value and 2 threads

t1: decreases the value with 1
valuepart1 = valuepart1 - 1
if valuepart1 == 255 then valuepart2=valuepart2-1

t2: increases the value with 1
valuepart1 = valuepart1 + 1
if valuepart1=0 then valuepart2=valuepart2+1

now let's run:
the value is 255 (ff 00)

t1 runs:
valuepart1=valuepart1-1 : value is now fe 00 (254)

t2 runs:
valuepart2=valuepart1+1 : value is now ff 00 (255)

t1 runs:
if valuepart1 == 255 then valuepart2=valuepart2-1: value is now ff ff (-1)

....

As you can see having multiple threads execute code at the same time can cause issues
Best way around it is execute the code from the original thread using code injection

[Frouk]

i'll try to