[Arkshine]

'Quim will probably post about the use of virtual functions.
I'm writing a tuto "How find functions and make signatures". Something like.

You have to use IDA or such software to understand that you can do a lot of things, like to find that such function is called from others functions ( to block, etc.. ). HLSDK is obviously not enough for CS functions. Or you need to block/replace a specific thing in one function, so you see the disassembled code, then you could for example find a constant value you could change and making a patch. Like the plugin 'infinite round' I nop a check so the whole if() is ignored.

You have to know how are done the funtions so you can do almost what you want. For example, using IDA by decompiling and changing some things, you can see for example what does exactly PM_Jump : http://paste.ak-team.com/f87e7065 ; then you see there are constants, you could change easily, or ignoring.

What I say is for the game dll, but you can do more things with other library like "engine", so much interesting functions there to alter.
Anyway above is very specific, you can also change param/param of struct of a function on-the-fly easily and such.

[joropito]

Originally Posted by Arkshine I'm writing a tuto "How find functions and make signatures". Something like.

It would be nice to have a repository of such signatures, like CS entity offsets in Alliedmodders wiki.


I think one thing that can be done with orpheu is to manage func_ladder so anyone can dynamically create ladders that will be managed by engine.

As Arkshine said, hlsdk is not enough and we need more specific sdk (CS, DOD, etc) to fully understand how to do things.

EDIT:

Originally Posted by 01101101 So I could do something like PHP Code:     #include <amxmodx>     #include <orpheu_memory>          public plugin_precache()     {         OrpheuMemoryReplace("engineString",0,"Connection accepted by %s^n","Welcome %s to porn server !!!^n")     }

Does Orpheu actually changes that string on memory or just change pointers to a new stack of strings?
Because if it changes strings and the new one is larger than the first one, what happens with the original memory alloc? Could happen a memory alloc error?

[01101101]

So I could do something like

PHP Code:

    #include <amxmodx>
    #include <orpheu_memory>
    
    public plugin_precache()
    {
        OrpheuMemoryReplace("engineString",0,"Connection accepted by %s^n","Welcome %s to porn server !!!^n")
    } 


{
    "name"        : "engineString",
    "library"     : "engine",
    "type"        : "string",
    "memoryType"  : "data"
}

[DarkGod]

This is very interesting. Thanks.

[01101101]

Quim somehow your example doesn't work for me, it says


Memory object identifier type "string" is invalid

What is weird since I put

 {
    "name"        : "engineString",
    "library"     : "engine",
    "type"        : "string",
    "memoryType"  : "data"
}

[Arkshine]

@joropito : Already talked about that with Quim, I think I will start a page on the wiki. About the strings, it changes the strings so yes, like Quim has warned "you should not use replacement strings longer than the original.", because obviously you will overwrite the next area and you will get probably a crash.

@01101101 : Wait for Quim, it seems the type is not included yet. I'm not sure.

[joaquimandrade]

About the type "string" not being recognized, It seems that I didn't posted an update where I changed the type to "string". Before, the type was called "char []" but I made it "string" to be better looking. I'm adding some stuff to Orpheu I will post an update latter.

[AntiBots]

Nice Evolution....

[Owyn]

it takes time on every map load to find and replace strings, if you want you can just edit mp.dll or swds.dll manually