typedef void(__thiscall* tOverrideMouseInput)(PVOID, float *x, float *y);
tOverrideMouseInput oOverrideMouseInput;
void __stdcall hkOverrideMouseInput(float *_x, float *_y)
{
	oOverrideMouseInput(pClientMode, _x, _y);

	//If there is no mouse movement then we don't want to do anything (you can change that if you want)
	if (*(float*)_x == 0.0f || *(float*)_y == 0.0f)
		return;

	IClientEntity *pLocalEntity = pEntityList->GetClientEntity(pEngine->GetLocalPlayer());
	if (!pLocalEntity)
		return;

	if (!pLocalEntity->IsAlive())
		return;

	CBaseCombatWeapon* pWeapon = (CBaseCombatWeapon*)pEntityList->GetClientEntityFromHandle(pLocalEntity->GetActiveWeaponHandle());
	if (!pWeapon)
		return;

	//Knife/Golden Knife - I don't want aim assistance with knifes
	int iWeaponClass = pWeapon->GetClientClass()->m_ClassID;
	if (iWeaponClass == 90 || iWeaponClass == 91)
		return;

	//Grab our data...
	QAngle ViewAngles;
	pEngine->GetViewAngles(ViewAngles);
	ViewAngles += pLocalEntity->GetPunchAngles() * 2.0f;
	NormalizeAngles(ViewAngles);
	Vector vecPlayer = pLocalEntity->GetOrigin();
	Vector vecPlayerEyes = vecPlayer + pLocalEntity->GetEyePosition();
	int iBestTarget = -1;

	//Get best target
	for (int i = 1; i < pEngine->GetMaxClients() + 1; i++)
	{
		//Pick best target here... it's your job, ez pz.
		iBestTarget = pEngine->GetLocalPlayer();
		break;
	}

	if (iBestTarget != -1)
	{
		IClientEntity* pEntity = pEntityList->GetClientEntity(iBestTarget);
		if (!pEntity)
			return;

		Vector vecHitbox = GetHitboxPosition(pEntity, 0); //Or use bones, w/e
		Vector vecDelta = vecHitbox - vecPlayerEye;
		QAngle qEntityAngles = CalcAngle(vecPlayerEye, vecHitbox);
		NormalizeAngles(qEntityAngles);

		QAngle qDelta = ViewAngles - qEntityAngles;
		NormalizeAngles(qDelta);

		//Angles to pixels, 0.022 == m_yaw == m_pitch
		//https://github.com/alliedmodders/hl2sdk/blob/csgo/game/client/in_mouse.cpp#L439
		qDelta.x /= 0.022f;
		qDelta.y /= 0.022f;

		//Convert them to vectors, since I am lazy and vectors have stuff like Lenght :v Notice that we use yaw as X and -pitch as Y.
		Vector vMouse = Vector(*(float*)_x, *(float*)_y, 0.0f);
		Vector vDelta = Vector(qDelta.y, -qDelta.x, 0.0f);

		//Scale down
		//I also added some "distance scaling", since it looked very strange and snappy without it.
		float fDistanceScaling = fNearsetFOV / 17.5f;
		fDistanceScaling += 0.385f;
		vDelta = vDelta.Normalized() * vMouse.Length() * fDistanceScaling;

		//Average of two vectors
		float fRandom = RandomFloat(6.15f, 7.65f) * (1.0 - fDistanceScaling);
		vDelta *= fRandom;
		vMouse *= 10.0f - fRandom;
		vDelta += vMouse;
		vDelta /= 10.0f;

		//Override original input with our values :v
		*(float*)_x = vDelta.x;
		*(float*)_y = vDelta.y;
		return;
	}
}

//Hooking:
//ClientMode pointer is your job, if you don't know how to do it check this out:
//http://www.unknowncheats.me/forum/source-engine/159253-finding-pointer-clientmode-game.html
pClientModeHook = new CVMTHookManager((PDWORD*)pClientMode);
oOverrideMouseInput = (tOverrideMouseInput)pInputHook->dwHookMethod((DWORD)hkOverrideMouseInput, 23);