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#ifndef PARTICLE_EMITTER_RATE_H
#define PARTICLE_EMITTER_RATE_H

//----------------------------------------------------------------------------//

#include "ParticleEmitter.h"

//----------------------------------------------------------------------------//

class ParticleEmitterRate : public ParticleEmitter
{
public:
						ParticleEmitterRate(ParticleEmitter::Shape::Enum shape, PxReal	extentX, PxReal extentY, PxReal spacing);
	virtual				~ParticleEmitterRate();

	virtual		void	stepInternal(ParticleData& particles, PxReal dt, const PxVec3& externalAcceleration, PxReal maxParticleVelocity);

	void 				setRate(PxReal t)						{ mRate = t; }
	PxReal 				getRate()						const	{ return mRate; }

private:

	void initDenseSites();
	void shuffleDenseSites();
	void initSparseSiteHash(PxU32 numEmit, PxU32 sparseMax);
	PxU32 pickSparseEmissionSite(PxU32 sparseMax);

	PxReal				mRate;
	PxReal				mParticlesToEmit;
	std::vector<PxU32>	mSites;
};

//----------------------------------------------------------------------------//

#endif // PARTICLE_EMITTER_RATE_H