registrar.h

Go to the documentation of this file.

#ifndef __REGISTRAR_H__
#define __REGISTRAR_H__

#include "geometry.h"
#include "state.h"



template<typename Derived>
class GeometryRegistrar {
public: 
    GeometryRegistrar(std::string name);
    
    static Geometry* createFunc();
};



// Start of GeometryRegistrar

template<typename Derived>
Geometry* GeometryRegistrar<Derived>::createFunc() {
    return new Derived();
}


template<typename Derived>
GeometryRegistrar<Derived>::GeometryRegistrar(std::string name) {
    GeometryFactory& factory = GeometryFactory::instance(); // & cannot be omitted
    factory.registerGeometry(name, GeometryRegistrar<Derived>::createFunc); // second arg is function pointer
}

// Start of GeometryRegistrar








template<typename Derived>
class StateRegistrar {
public:
    StateRegistrar(std::string name);
    static State* createFunc(); 
};


// Start of StateRegistrar

template<typename Derived>
State* StateRegistrar<Derived>::createFunc() {
    return new Derived();
}

template<typename Derived>
StateRegistrar<Derived>::StateRegistrar(std::string name) {
    StateFactory& factory = StateFactory::instance(); // note here is the difference from the GeometryRegistrar class
    factory.registerState(name, StateRegistrar<Derived>::createFunc);
}

// End of StateRegistrar

#endif // __REGISTRAR_H__