This function overloads the general add function that is specified in Collection and
(overridden by Context)
The elements of Memory are collected within a Map instead of a Collection.
Describes certain scenario specific areas on a physical terrain in the world
An area represents a set of cellObjects/gridCells that cover a part of the
environmental space
Constructor of Area
Area defines parts of the world with a specific attribute
in terms of walkability and name (which has a semantic given a scenario)
Festival scenario areas: stage, bar and toilet