describable.h
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	#ifndef DESCRIPTABLE_H
	#define DESCRIPTABLE_H

	class Descriptor;

	class Describable
	{

	public:

	// give a descriptor specification inheriting this class
	Describable(Descriptor* desc = 0);

	virtual ~Describable();

	void bind(Descriptor *);

	void release();

	bool isBound() const;

	Descriptor * getDescriptor();

	/*
	* Evolution method
	* Check for bound state before calling
	* this function !
	*/
	void updateDescriptor(float dt);

	/* virtual state check method */
	virtual bool isRunningDescriptor() const = 0;

	protected:

	/*
	* Warning!
	* This method is not type safe, use with consciousness
	*/
	template<class T>
	T * cast_descriptor()
	{
	return static_cast<T*>(descriptor);
	}

	template<class T>
	const T * cast_descriptor() const
	{
	return static_cast<T*>(descriptor);
	}

	private:

	Descriptor * descriptor;
	};

	#endif