particlesystem.h
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	#ifndef ABSTRACTSYSTEM_H
	#define ABSTRACTSYSTEM_H

	#include "skactor.h"
	#include "specs/evolvable.h"
	#include "specs/renderable.h"
	#include "specs/positionable.h"

	#include <list>

	class Particle;

	class ParticleSystem : public SKActor, public Evolvable, public Renderable, public Positionable
	{
	public:

	ParticleSystem( const SVector<3>& offset = {0,0,0},
	const QString& label = "",
	specs_t flags = S_EVOLVE \| S_RENDER \| S_POSITION);

	ParticleSystem(const std::initializer_list<Particle*>&);

	virtual void evolve(float) override;

	SPECS_EVOLVE

	SPECS_RENDER

	/* A system doesn't implement a fill mode */
	virtual bool isFillMode() const override
	{
	return true;
	}

	/* Generate Positioning methods */
	SPECS_POSITION

	virtual SVector<3> position() const override;

	void setOffset(const SVector<3>&);

	/* Loop through the system components */

	typedef std::list<Particle*>::iterator iterator;
	typedef std::list<Particle*>::const_iterator const_iterator;

	iterator begin();
	iterator end();

	const_iterator begin() const;
	const_iterator end() const;

	/* Add/remove components */

	virtual void attach(Particle*);
	virtual void detach(Particle*);

	void detachAll();

	virtual void render(symkit::render_s &) override;

	private:

	SVector<3> offset;

	std::list<Particle*> particles;
	};

	#endif // ABSTRACTSYSTEM_H