awardPointsOnce

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In cases where you want to prevent points being awarded several times for the same feat, you could use awardPointsOnce in preference to awardPoints and as an alternative to addToScoreOnce.

+++ bronzeBowl : Container 'bronze bowl/vessel' 'bronze bowl' 
  "It's of ancient and somewhat curious design, cast with two rows of
    pomegranates all the way round the outside. "
   bulkCapcity = 4
   bulk = 5
   weight = 5 
   dobjFor(Take)
   {
     action()
     {
       achievement.awardPointsOnce();
       inherited;
     }
   }
   achievement : Achievement { +3 "recovering the bronze bowl" }
;

Once again, note the use of the Achievement template here.