ValueMutationStrategy.h

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/***************************************************************************
 *   Copyright (C) 2005-2009 by Robot Group Leipzig                        *
 *    martius@informatik.uni-leipzig.de                                    *
 *    fhesse@informatik.uni-leipzig.de                                     *
 *    der@informatik.uni-leipzig.de                                        *
 *    guettler@informatik.uni-leipzig.de                                   *
 *    jhoffmann@informatik.uni-leipzig.de                                  *
 *    joergweide84@aol.com (robot12)                                       *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
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 *   This program is distributed in the hope that it will be useful,       *
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 ***************************************************************************
 *                                                                         *
 *   This class is a implementation of the interface IMutationStrategy.    *
 *                                                                         *
 *   $Log: ValueMutationStrategy.h,v $
 *   Revision 1.4  2009/07/21 08:37:59  robot12
 *   add some comments
 *
 *   Revision 1.3  2009/06/17 11:25:52  robot12
 *   finishing the mutation strategy and add some comments.
 *
 *   Revision 1.2  2009/05/14 15:29:56  robot12
 *   bugfix: mutation change the oldGen, not the new!!! now fixed
 *
 *   Revision 1.1  2009/05/04 15:27:57  robot12
 *   rename of some files and moving files to other positions
 *    - SingletonGenAlgAPI has one error!!! --> is not ready now
 *
 *   Revision 1.2  2009/05/04 09:06:00  robot12
 *   some implements... Part7
 *
 *   Revision 1.1  2009/04/30 11:51:25  robot12
 *   some implements... new classes
 *
 *
 *
 ***************************************************************************/

#ifndef VALUEMUTATIONSTRATEGY_H_
#define VALUEMUTATIONSTRATEGY_H_

//forward declarations
class Gen;
class Individual;
class GenContext;
class SingletonGenFactory;
class IMutationFactorStrategy;

//ga_tools includes
#include "IMutationStrategy.h"

/**
 * this mutation strategy clculate a mutation factor by using a
 * mutation factor strategy an add this factor to the old gen.
 */
class ValueMutationStrategy : public IMutationStrategy {
public:
        /**
         * constructor
         * @param strategy (IMutationFactorStrategy*) this strategie is used to calculate the mutation factor.
         * @param mutationProbability (int) the mutation probability which is give back.
         */
        ValueMutationStrategy(IMutationFactorStrategy* strategy, int mutationProbability);

        /**
         * default destructor
         */
        virtual ~ValueMutationStrategy();

        /**
         * mutate a gen
         * @param context (GenContext*) the context in which the new gen comes (needed by the factory
         * @param individual (Individual*) the individual, which the new gen becomes
         * @param oldGen (Gen*) the old gen, which mutate
         * @param oldContext (GenContext*) the Context in which the old gen are.
         * @param factory (SingletonGenFactory*) the GenFactory which create the new gen.
         * @return (Gen*) the new mutated gen
         */
        virtual Gen* mutate(GenContext* context, Individual* individual, Gen* oldGen, GenContext* oldContext, SingletonGenFactory* factory);

        /**
         * gives the Probability of a mutation back.
         * @return
         */
        virtual int getMutationProbability(void);

protected:
        /**
         * the mutation factor strategy
         */
        IMutationFactorStrategy* m_strategy;

        /**
         * the mutation probability
         */
        int m_mutationProbability;

private:
        /**
         * disable the default constructor
         */
        ValueMutationStrategy();
};

#endif /* VALUEMUTATIONSTRATEGY_H_ */

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