cgameobjectfactory.h

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//--------------------------------------------------------------- @License begins
// RioEngine: The late night Coke -without whores- debugging sessions
// 2012-2015 Leopoldo Lomas Flores. Torreon, Coahuila. MEXICO
// leopoldolomas [at] gmail
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#ifndef RIOENGINE_CENGINE_CGAMEOBJECTFACTORY_H_
#define RIOENGINE_CENGINE_CGAMEOBJECTFACTORY_H_

#include <QStringList>
#include "cengine/cobject.h"

class CGameObject;

class CGameObjectFactory {
public:
    template <class T>
    static bool addType() {
        // check whether the specified Type inherits from CGameObject
        T* newtypeobj_dummy = new T;
        CGameObject* game_obj = qobject_cast<CGameObject*>(newtypeobj_dummy);

        if(game_obj == NULL) { // then it does not inherit from CGameObject
            RE_ASSERT(false);
            return NULL;
        }

        const char* class_name = game_obj->metaObject()->className();
        QString class_name_as_qstring = QString::fromUtf8(class_name);

        if(m_types.contains(class_name_as_qstring)) {
            return false; // type already registered
        }

        // register the type in the Qt MetaType system
        qRegisterMetaType<T>(class_name);

        // add the Type (T) to the list of... (yep, you guessed right) supported types
        m_types.append(class_name_as_qstring);

        SAFE_RELEASE(newtypeobj_dummy);

        return true;
    }

    static const QStringList& types();

    static CGameObject*  createInstance(const char* class_name);

    static const QString& getTypeNameHavingId(int type_id);

    static int           getObjectTypeId(const char* class_name);

private:
    static QStringList m_types;
};

#endif  // RIOENGINE_CENGINE_CGAMEOBJECTFACTORY_H_