relations.tfilesource file

RELATIONS EXTENSION by Eric Eve July 2014

The relations.t extension allows Inform7-style relations to be defined in a TADS 3 game.

Summary of Classes  

Relation  VerbRule(ListRelations)  VerbRule(RelationDetails) 

Summary of Global Objects  

DerivedRelation  ListRelations  RelationDetails  relationPathfinder  relationTable 

Summary of Global Functions  

relate  related  relationPath  unrelate 

Global Functions  

relate (a, rel, b)relations.t[587]

Make a related to b via the rel relation. The rel parameter can be specified either as an object (in which case its the relevant relation object) or as a single-quoted string (in which cast it's either the name or the reverseName of a relation object.

PART OF THE RELATIONS EXTENSION

related (a, rel, b?)relations.t[662]
If two arguments are supplied (e.g. related(a, knows)) returns a list of items related to a via the rel relation. If three arguments are supplied (e.g. related(a, knows, b)) then return true if a is related to b via the knows relation and b otherwise.

PART OF THE RELATIONS EXTENSION

relationPath (start, rel, target)relations.t[837]
Find a path from start to target via the rel relation, where rel can be a single relation or a list of relations, and can be specified either via a relation object name or a string name (or reverseName). We provide this as a convenient wrapper for the more verbose method call.

PART OF THE RELATIONS EXTENSION.

unrelate (a, rel, b)relations.t[623]
Remove the rel relation between a and b

PART OF THE RELATIONS EXTENSION

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