#include <boost/foreach.hpp>
#include <memory>
#include <vector>

struct GameInfoPtr {
  bool operator==(const GameInfoPtr&) const { return false; }
}; // параметры для алгоритма

struct ParamType1 {};
struct ParamType2 {};
struct ParamType3 {};

template <class ParamType_> class FunctionBase
{
public:
  typedef std::tr1::shared_ptr<FunctionBase<ParamType_> > FunctionBasePtr;
  typedef typename ParamType_ ParamType;
  virtual void func(ParamType* params) = 0;
};


template <class ParamType_> class Func1 : public FunctionBase<ParamType_>
{
  GameInfoPtr m_info;
public:

  Func1(GameInfoPtr info_) : m_info(info_) {}
  virtual void func(ParamType* params_) { do_func(params_); }

  void do_func(ParamType1* params_) {}

  bool isEqual(GameInfoPtr game_info) const { return game_info == m_info;  }

};


template <class ParamType_> class Func2 : public FunctionBase<ParamType_>
{
public:

  struct DoFunc1
  {
    template <class ThisType, class U> static bool func(ThisType,U*) { return false; }
    template <class ThisType> static bool func(ThisType,ParamType1*) { return true;  }
  };

  struct DoFunc2
  {
    template <class ThisType, class U> static bool func(ThisType,U*) { return false; }
    template <class ThisType> static bool func(ThisType,ParamType2*) { return true;  }
  };

  struct DoFunc3
  {
    template <class ThisType, class U> static bool func(ThisType,U*) { return false; }
    template <class ThisType> static bool func(ThisType,ParamType3*) { return true;  }
  };

  Func2(GameInfoPtr info_) : m_info(info_) {}
  virtual void func(ParamType_* params_)
  {
    if (DoFunc2::func(this, params_))
      return;
    if (DoFunc3::func(this, params_))
      return;
    DoFunc1::func(this, params_);
  }

  bool isEqual(GameInfoPtr game_info) const { return game_info == m_info;  }

  GameInfoPtr m_info;
};



template <class ParamType> class IPrototypeFactory
{
public:
  typedef typename FunctionBase<ParamType>::FunctionBasePtr FunctionBasePtr;
  virtual FunctionBasePtr create(GameInfoPtr game_info) = 0;
};



template <class FuncType> class PrototypeFactory : public IPrototypeFactory<typename FuncType::ParamType>
{
public:

  typedef typename FuncType::ParamType   ParamType;
  typedef std::tr1::shared_ptr<FuncType> FuncTypePtr;

  virtual FunctionBasePtr create(GameInfoPtr game_info)
  {
    BOOST_FOREACH(FuncTypePtr& p, m_vPrototypes)
      if (p->isEqual(game_info))
        return p;
    FuncTypePtr newFunc(new FuncType(game_info));
    m_vPrototypes.push_back(newFunc);
    return newFunc;
  }
private:

  std::vector<FuncTypePtr> m_vPrototypes;

};

struct MegaParamType1 : public ParamType1, public ParamType2, public ParamType3 {};
struct MegaParamType2 : public ParamType1, public ParamType3 {};

int main()
{
  GameInfoPtr game_info1;
  GameInfoPtr game_info2;
  GameInfoPtr game_info3;

  PrototypeFactory<Func1<MegaParamType1> > factory1_1;
  PrototypeFactory<Func2<MegaParamType1> > factory1_2;
  std::vector<FunctionBase<MegaParamType1>::FunctionBasePtr> vSequence1;

  vSequence1.push_back(factory1_1.create(game_info1));
  vSequence1.push_back(factory1_2.create(game_info2));
  vSequence1.push_back(factory1_1.create(game_info3));
  vSequence1.push_back(factory1_1.create(game_info1));

  MegaParamType1 params1;
  BOOST_FOREACH(FunctionBase<MegaParamType1>::FunctionBasePtr& action, vSequence1)
    action->func(&params1);




  PrototypeFactory<Func1<MegaParamType2> > factory2_1;
  PrototypeFactory<Func2<MegaParamType2> > factory2_2;
  std::vector<FunctionBase<MegaParamType2>::FunctionBasePtr> vSequence2;

  vSequence2.push_back(factory2_1.create(game_info1));
  vSequence2.push_back(factory2_2.create(game_info2));
  vSequence2.push_back(factory2_1.create(game_info2));
  vSequence2.push_back(factory2_2.create(game_info1));

  MegaParamType2 params2;
  BOOST_FOREACH(FunctionBase<MegaParamType2>::FunctionBasePtr& action, vSequence2)
    action->func(&params2);

  return  0;
}