GetIsImmune

// - oCreature // - nImmunityType: IMMUNITY_TYPE_* // - oVersus: if this is specified, then we also check for the race and //  alignment of oVersus // * Returns TRUE if oCreature has immunity of type nImmunity versus oVersus. int GetIsImmune(object oCreature, int nImmunityType, object oVersus=OBJECT_INVALID);