ValueMutationStrategy.h

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/***************************************************************************
 *   Copyright (C) 2008-2011 LpzRobots development team                    *
 *    Joerg Weider   <joergweide84 at aol dot com> (robot12)               *
 *    Georg Martius  <georg dot martius at web dot de>                     *
 *    Frank Guettler <guettler at informatik dot uni-leipzig dot de        *
 *    Frank Hesse    <frank at nld dot ds dot mpg dot de>                  *
 *    Ralf Der       <ralfder at mis dot mpg dot de>                       *
 *    Joern Hoffmann <jhoffmann at informatik dot uni-leipzig dot de       *
 *                                                                         *
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#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_ */