fHooks.inc - Function hooks! - Printable Version

fHooks.inc - Function hooks! - Printable Version

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Function hooking include - Emmet_ - 22.11.2013

fHooks.inc

Introduction
I've decided to attempt a challenge that nobody has EVER attempted before - automatic function hooks. This library allows scripters to basically hook functions EASILY, without any ALS bullshit.

This library took an entire 2 weeks of thinking for me to develop! I had to think of an effective way that scripters can hook the functions without having to change anything in their script.

How to use this?
This code:

pawn Code:

stock MyPrint(string[])
{
    printf("Time to print a message:");
    print(string);
    return 1;
}

#if defined _ALS_print
    #undef print
#else
    #define _ALS_print
#endif

#define print MyPrint

Would simply turn into this code:

pawn Code:

nhook print(message[])
{
    printf("Time to print a message:");
    print(message);
    return 1;
}

Just like y_hooks, only for functions (this won't work for callbacks, so don't try it).

Note that Hook_Call will call the original, unhooked function. Using print() directly in that function will cause the function to NOT execute properly - you have been warned.

Notes

Any functions over 28 characters can't be prefixed, therefore they are removed due to a compiler limitation of 32 characters.
Any functions with variadic arguments (printf, format) have been removed but I'm planning on fixing i

Credits

Thanks to Kalcor, SA-MP developers and ITB CompuPhase for developing the native functions.
Thanks a bunch to Alex "Y_Less" Cole for the whole introduction of hooking to SA-MP, and of course y_hooks, which inspired me to make this.
And thanks to myself because I'm selfish like that.

Download
This is only a discussion for now - this will be released when the concept has been implemented into a library.