genesis-3d_engine/Engine/addons/particles/particleaffector.h

/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU

http://www.genesis-3d.com.cn

Permission is hereby granted, free of charge, to any person obtaining a copy
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****************************************************************************/
#ifndef __particleaffector_H__
#define __particleaffector_H__
#include "particles/particle_fwd_decl.h"
#include "foundation/util/scriptbind.h"
#include "addons/shadercompiler/ShaderMarcro.h"

namespace Particles
{
	class ParticleAffector: public Core::RefCounted , Serialization::ISerialize
	{
		__DeclareClass(ParticleAffector);
		__ScriptBind

	public:

		enum AffectType
		{
			AT_DEFAULT,
			AT_INCREASE,
			AT_DECREASE
		};


		ParticleAffector();
		virtual ~ParticleAffector();
		static GPtr<ParticleAffector> NullAffector;

		ParticleSystem* GetParentSystem(void) const;

		void SetParentSystem( ParticleSystem* technique);

		bool IsActive(void) const;

		Math::float3 GetDerivedPosition(void);

		const AffectType GetAffectType(void) const ;
		void SetAffectType(const AffectType affectSpecialisation);

		void SetEnable(bool enable);
		bool GetEnable(void) const;

		//---------------------------property---------------------------------------------

		void SetName( const Util::String& name);
		const Util::String& GetName(void) const; 

		//---------------------------internal Loop---------------------------------------------
		virtual void _onActivate(void);

		virtual void _onDeactivate(void);

		virtual void _initParticleForEmission(Particle* particle);

		virtual void _preProcessParticles(void);

		virtual void _processParticle( Particle* particle, bool firstParticle);

		virtual void _postProcessParticles();

		virtual void _firstParticle( Particle* particle ); 

		virtual void _affect(Particle* particle );

		virtual void _affectPositon(Particle* particle);

		virtual void SetShaderParam();
		virtual void InitShaderParam();
		virtual void SetShaderMask(const GPtr<ShaderProgramCompiler::ShaderMarcro>& pMarcro);

		Math::scalar _calculateAffectSpecialisationFactor (Particle* particle);

		virtual Math::MinMaxCurve* getMinMaxCurve(ParticleCurveType pct);
		virtual void _switchParticleType(bool _isMobile);
	protected:
		ParticleSystem* mParentSystem;
		Util::String mName;
		bool mIsActive;
		bool mEnable;

		AffectType mAffectType;


	public:
		// @ISerialization::GetVersion. when change storage, must add SerializeSVersion count
		virtual Serialization::SVersion GetVersion() const;

		// @ISerialization::Load 
		virtual void Load( Serialization::SVersion ver, Serialization::SerializeReader* pReader, const Serialization::SerializationArgs* args );

		// @ISerialization::Save
		virtual void Save( Serialization::SerializeWriter* pWriter ) const;

		// copy 
		virtual void CopyFrom( const ParticleAffectorPtr& affector );
	};
	//------------------------------------------------------------------------
	inline
		ParticleSystem* 
		ParticleAffector::GetParentSystem(void) const
	{
		return mParentSystem;
	}
	//------------------------------------------------------------------------
	inline
		void 
		ParticleAffector::SetParentSystem( ParticleSystem* technique)
	{
		mParentSystem = technique;
	}
	//------------------------------------------------------------------------
	inline
		bool 
		ParticleAffector::IsActive(void) const
	{
		return mIsActive;
	}
	//-----------------------------------------------------------------------
	inline
		void
		ParticleAffector::SetEnable(bool enable)
	{
		mEnable = enable;
	}
	//-----------------------------------------------------------------------
	inline
		bool
		ParticleAffector::GetEnable(void) const
	{
		return mEnable;
	}
	//------------------------------------------------------------------------
	inline
		void ParticleAffector::SetName( const Util::String& name)
	{
		if ( name.IsEmpty() )
		{
			return;
		}

		mName = name;
	}
	//------------------------------------------------------------------------
	inline
		const Util::String& 
		ParticleAffector::GetName(void) const
	{
		return mName;
	}
	//------------------------------------------------------------------------

	inline const ParticleAffector::AffectType ParticleAffector::GetAffectType(void) const 
	{
		return mAffectType;
	}
	//-------------------------------------------------------------------------
	inline void ParticleAffector::SetAffectType(const ParticleAffector::AffectType affectSpecialisation) 
	{
		mAffectType = affectSpecialisation;
	}
	//------------------------------------------------------------------------
	inline void ParticleAffector::_initParticleForEmission(Particle* particle)
	{
		//empty
	}
}







#endif // __particleaffector_H__