E:/Programming/MyProject/K_Game_hg/GameEngine/include/resource/Resource.h

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// Copyright 2006-2011 by Kat'Oun

#ifndef _RESOURCE_H_
#define _RESOURCE_H_

#include <EngineConfig.h>
#include <core/Types.h>
#include <engine/Object.h>
#include <resource/ResourceDefines.h>

#include <string>

namespace resource
{

class DataStream;
class Serializer;
class ResourceManager;
struct ResourceEvent;
class ResourceEventReceiver;

class ENGINE_PUBLIC_EXPORT Resource: public engine::Object
{
        friend class Serializer;
        friend class ResourceManager;

public:
    
        Resource(const std::string& name, Serializer* serializer = NULL);
        virtual ~Resource();

        const ResourceType& getResourceType() const;

        const std::string& getFilename() const;

        const ResourceState& getState() const;

        u32 getSize();

        bool load();

        void unload();

        bool reload();

        void addResourceEventReceiver(ResourceEventReceiver* newEventReceiver);
        void removeResourceEventReceiver(ResourceEventReceiver* oldEventReceiver);

protected:

        ResourceType mResourceType;

        void initProperties();

        virtual void updateImpl(f32 elapsedTime);

        virtual bool loadImpl();
        virtual void unloadImpl();

        std::string mFilename;
        DataStream* mDataStream;
        Serializer* mSerializer;
        ResourceState mState;
        u32 mSize;

        ResourceEvent* mResourceEvent;
        std::list<ResourceEventReceiver*> mResourceEventReceivers;
        std::list<ResourceEventReceiver*> mAlreadyLoadedEventReceivers;

        void fireLoaded();
        void fireUnloaded();
};

}// end namespace resource

#endif