Wizt::VStateCreator Struct Reference

This is an experimental class to easy creation of context-relative object states. More...

#include </home/werner/origo/vish/ocean/plankton/VObjectState.hpp>

List of all members.

Classes

• struct MyState

Public Member Functions

• override RefPtr
  < VStateCreatorBase::State > newState () const

  Implementation of the virtual object state creation function.
  

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Detailed Description

This is an experimental class to easy creation of context-relative object states.

The template parameter is a class providing local variables. Deriving from this class reliefs the child class from implementing the virtual newState() function. It is sufficient to derive a Vish object (virtually) from a VStateCreator<UserState> where UserState is a user-defined structure. It will be dynamically create by the newState() function.

Using this mechanism, the local state class must be defined before the derived Vish object is defined; the local state class cannot be a nested class. However, such classes may reside in an anonymous namespace if the Vish object is defined only within a .cpp file as well.

A problem with this class may occur when an a class hierarchy defines different local states, then it becomes unclear which implementation will be used for creating a state.

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The documentation for this struct was generated from the following file:

• ocean/plankton/VObjectState.hpp