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strategy.h

Go to the documentation of this file.

#ifndef __STRATEGY_H__
#define __STRATEGY_H__

//                                                                           //
//           -----   _    ----                                               //
//           |      / \  (      |       ___   |   ___                        //
//           |---  /   \  ---  -+- |/\  ___| -+- /   )  ___  \   |           //
//           |     |---|     )  |  |   (   |  |  |---  (   \  \  |           //
//           |____ |   | ___/    \ |    \__|   \  \__   ---/   \_/           //
//                                                      __/   \_/            //

// In olden times strategy was listed among the Ten Abilities and
// Seven Arts as a beneficial practice. It was certainly an art but as
// a beneficial practice it was not limited to sword-fencing. The true
// value of sword-fencing cannot be seen within the confines of
// sword-fencing technique.

class EAStrategy {
  public:

                    EAStrategy      (SimplePopulation& popula);
    virtual         ~EAStrategy     () {delete mpNextGen;}

    void            evolve          (EAEnvironment& envr, TextOStream& out, TextOStream& log);
    
    virtual void    addFeaturesTo   (Genome& genome) const;

    void            print           (TextOStream& out);

    void            recombine       (const SelectionSituation& situation,
                                     const SelectionMatrix& selmat);

    enum traceflags {TRACE_RECOMBINATION=10, TRACE_MUTATION};

    void            check           () const;
    
  protected:
    SimplePopulation&   mrPopula;

    Array<Individual>*  mpNextGen;

    bool allow_same_parents;
};


//
// Timing in strategy
//
// There is timing in everything. Timing in strategy cannot be
// mastered without a great deal of practice.
//
// Timing is important in dancing and pipe or string music, for they
// are in rhythm only if timing is good. Timing and rhythm are also
// involved in the military arts, shooting bows and guns, and riding
// horses. In all skills and ablilities there is timing.
//   -- Miyamoto Musashi
//

#endif

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