Hooking into native functions (C++)

[ryanm2711 0]

Hey guys I was just wondering how I would hook into the game's native functions and alter it's behaviour globally? I want to hook into the TASK_KNOCKED_OUT native and make it so the third parameter dictating whether or not the knockout is permanent to always be false - resulting in infinite knockouts on the same pedestrian, in theory.

 

I have written the code to hook into the native, and I have got MinHook - but I couldn't find anywhere that has got information on the address for the native table which points to said function. This is my first time doing this sort of thing, so I am not particularly confident in finding it myself through disassembling, but if needed - some pointers on where to start would be appreciated 🙂

 

Code:

 

#include "script.h"

typedef void(*Original_TASK_KNOCKED_OUT)(Ped ped, float duration, BOOL isPermanent);
Original_TASK_KNOCKED_OUT Original_TASK_KNOCKED_OUT_Func = nullptr;

void Hooked_TASK_KNOCKED_OUT(Ped ped, float duration, BOOL isPermanent)
{
	isPermanent = false; // Always wake up

	// Call the original function
	invoke<void>(0xF90427F00A495A28, ped, duration, isPermanent);
}

void* GetNativeFunctionAddress()
{
	return reinterpret_cast<void*>(invoke<void*>(0x7F8C3BE3E7A910C7));
}

void ReplaceNativeFunction()
{
	// Hook the function
}

void main()
{
	while (true)
	{
		WAIT(0);
	}
}

void ScriptMain()
{
	srand(GetTickCount());
	main();
}