Effect.h

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#ifndef ULT_EFFECT_H_INCLUDED
#define ULT_EFFECT_H_INCLUDED
 
#include "../ResourceManager.h"
 
#define ULT_EFFECT_HANDLE Ult::Handle<Ult::EffectResourceTag>
#define ULT_EFFECT_RESOURCE_MANAGER Ult::ResourceManager<Ult::EffectResource,ULT_EFFECT_HANDLE>
 
namespace Ult
{

 
class EffectResourceTag
{
}; // empty in book

class Effect
{
public:
    Effect() {}
    virtual ~Effect() {
        Release();
    }

    virtual void ApplyEffect() = 0;

    virtual void Release()
    {}
};

class EffectResource
{
public:
    EffectResource(Effect* effect) :
        mEffect(effect)
    {}

    virtual ~EffectResource() {
        FreeMemory();
    }

    Effect* GetEffect() { return mEffect; }
 
private:
    Effect* mEffect;
 
    void FreeMemory() {
        if (mEffect) {
            delete mEffect;
        }
        mEffect = nullptr;
    }
};
 
} // namespace Ult
 
#endif // ULT_EFFECT_H_INCLUDED