enum CustomFlags
{
    CREATURE_CUSTOMFLAG_CANTDIE = 0x1,
    CREATURE_CUSTOMFLAG_IMMUNE_TO_CREATURE_DAMAGE = 0x2,
    CREATURE_CUSTOMFLAG_CANT_REGEN_HEALTH = 0x4,
    CREATURE_CUSTOMFLAG_NO_LOOT = 0x8,
    CREATURE_CUSTOMFLAG_VEHICLE_COMBAT = 0x10,
    CREATURE_CUSTOMFLAG_NO_ADV_PATHFINDING = 0x20,
    CREATURE_CUSTOMFLAG_NO_RETURN_AFTER_COMBAT = 0x40,
};