OnActivate()

override void OnActivate	(	DayZPlayerCamera	pPrevCamera,
		DayZPlayerCameraResult	pPrevCameraResult )

См. определение в файле DayZPlayerCameraVehicles.c строка 54

    {
        if (pPrevCamera)
        {
            vector baseAngles     = pPrevCamera.GetBaseAngles();
            m_fUpDownAngle            = baseAngles[0]; 
            m_fLeftRightAngle      = baseAngles[1]; 
 
            vector addAngles      = pPrevCamera.GetAdditiveAngles();
            m_fUpDownAngleAdd      = addAngles[0];
            m_fLeftRightAngleAdd    = addAngles[1];
        }
                
        m_LagOffsetPosition = vector.Zero;
        m_fLagOffsetVelocityX[0] = 0;
        m_fLagOffsetVelocityY[0] = 0;
        m_fLagOffsetVelocityZ[0] = 0;
    }

Перекрестные ссылки DayZPlayerCamera(), m_fLagOffsetVelocityX, m_fLagOffsetVelocityY, m_fLagOffsetVelocityZ, m_fLeftRightAngle, m_fLeftRightAngleAdd, m_fUpDownAngle, m_fUpDownAngleAdd, m_LagOffsetPosition и vector::Zero.