genesis-3d_engine/Engine/app/particlefeature/components/particlerendercomponent.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 __particlerendercomponent_H__
#define __particlerendercomponent_H__

#include "graphicfeature/components/rendercomponent.h"
#include "particlefeature/components/particlerenderobject.h"
#include "rendersystem/base/PrimitiveGroup.h"
#include "particles/particlesystem.h"
#include "resource/meshres.h"

namespace App
{
	class ParticleRenderComponent: public RenderComponent
	{
		__DeclareSubClass(ParticleRenderComponent, RenderComponent );
	public:
		ParticleRenderComponent();
		virtual ~ParticleRenderComponent();

		/// setup callbacks for this Component, call by Actor in OnActivate()
		virtual void SetupCallbacks(void);

		/// @Component::SetupAcceptedMessages override to register accepted messages
		virtual void SetupAcceptedMessages();

		/// @Component::SetupAcceptedMessages handle a single message
		virtual void HandleMessage(const GPtr<Messaging::Message>& msg);

		virtual void UpdateRenderLayer();

		virtual void SetVisible(bool bVis);

		virtual void GetReferenceResourceId(Util::Array<Resources::ReferenceResource>& list) const;

		void GetTargetInfo(ushort&   partType ,  Util::Array<Math::matrix44>& mMats, Util::Array<Math::float4>& mColors);

		void CalculateBBox(Math::bbox& box, const Util::Array<Math::matrix44>& matlist) ;

		bool IsSetTransParam() const ;

		/// delete shader iD
		void RemoveShader( IndexT iSubMesh );

		const GPtr<Particles::ParticleSystem>& GetParticleSystem(void) const;

		/// Init Method
		void InitParticleSystem();
		void InitMobielParticle();
		/// Do not use this Method. except use a temp ParticleSystem 
		void SetParticleSystem( const GPtr<Particles::ParticleSystem>& parSys);

		/// set meshid 
		void SetMeshID(const Resources::ResourceId& meshID, Resources::Priority priority = Resources::ResourcePriority::MeshDefault );

		/// get meshid 
		const Resources::ResourceId& GetMeshID(void) const;

		/// set meshid 
		void SetTemplateID(const Resources::ResourceId& templateID);

		/// get meshid 
		const Resources::ResourceId& GetTemplateID(void) const;

		/// get meshloadpriority
		const int GetMeshLoadPriority(void) const;

		/// set emitter meshid 
		void SetEmitMeshRes(const Resources::ResourceId& meshID, int techIdx = 0, int emitIdx = 0 );

		/// get emitter meshid 
		const Resources::ResourceId& GetEmitMeshID(void) const;

		/// 
		const GPtr<Resources::MeshRes> GetMesh() const;

		//	Serialization
		// @ISerialization::GetVersion. when change storage, must add SerializeVersion count
		virtual Version GetVersion() const;

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

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

		// copy from other component
		virtual void CopyFrom( const GPtr<Component>& pComponent );

		struct RenderData
		{
			ushort	mPartType;
			ushort	mSubmeshIndex;
			ushort	mTargetIndex;
			RenderBase::PrimitiveHandle mPrimitiveHandle;
		};
		const RenderData* GetRenderData( IndexT index) const ;

		void OnParticleDataChange();

		void NeedUpdate();
		Graphic::Camera* _getCurrentCamera() const;
		void SetShaderMask();
	protected:		
		typedef ParticleRenderObject RenderObjectType;
		typedef GPtr<RenderObjectType> ParticleRenderObjectPtr;

		/// @Component::OnActivate  called from Actor::ActivateComponents()
		virtual void OnActivate();

		/// @Component::OnDeactivate called from Actor::DeactivateComponents()
		virtual void OnDeactivate();

		// @Component::_OnDestroy called only form Actor::Destroy
		virtual void OnDestroy();

		virtual void OnRenderSceneChanged();

		virtual void _OnBeginFrame();

		virtual void _OnFrame();


		/// @Component::Component called after movement has happened. 
		virtual void _OnMoveAfter();

		void BuildRenderData(void);

		void DiscardRenderData(void);

		void UpdateRenderData(void);

		bool CheckMeshChanged(void);

		void OnParticleSystemChange();

		void SetRenderShapeEnable(bool enable);

		void _SetRenderable(const GPtr<Resources::MeshRes>& meshRes, IndexT index, RenderObjectType::RenderableType* renderable);

		void _UpdateRenderable(IndexT index, SizeT activeVertexCount, SizeT activeIndexCount, signed char sort, RenderObjectType::RenderableType* renderable);

		void LoadEmitterMesh(void);

		void _AttachRenderObject();

		void _DeattachRenderObject();

		void _updateTarget(Graphic::Camera* camera);
		
	protected:	
		Graphic::Camera*						mCurCamera;
		Util::Array<RenderData>					mRenderDates;

		GPtr<Resources::PrimitiveResInfo>		mPrimitiveResInfo;

		GPtr<Resources::PrimitiveResInfo>		mEmitMeshRes;

		friend class ParticleRenderer;

		GPtr<Particles::ParticleSystem>			mParticleSystem;

		Graphic::MeshInfo						mMeshInfo;
		ParticleRenderObjectPtr					mRenderObject;
		IndexT									mSelectTech;

		Resources::ResourceId					mTemplateName;

		bool									mShowSimpleShape;		

		bool									mIsBuild;
		bool									mIsAttached;
		bool									mIsTrans;
	};
	//------------------------------------------------------------------------
	inline
		const ParticleRenderComponent::RenderData* 
		ParticleRenderComponent::GetRenderData( IndexT index) const 
	{
		if ( index >= 0 && index < mRenderDates.Size() )
		{
			return &( mRenderDates[index] );
		}
		else
		{
			return NULL;
		}
	}
	//-------------------------------------------------------------------------
	inline bool ParticleRenderComponent::IsSetTransParam() const
	{
		return mIsTrans;
	}
	//------------------------------------------------------------------------
	inline
		const GPtr<Particles::ParticleSystem>&
		ParticleRenderComponent::GetParticleSystem(void) const
	{
		return mParticleSystem;
	}
	//------------------------------------------------------------------------
	inline
		const Resources::ResourceId& 
		ParticleRenderComponent::GetMeshID( void ) const
	{
		return mMeshInfo.meshID;
	}

	//------------------------------------------------------------------------
	inline
		const int 
		ParticleRenderComponent::GetMeshLoadPriority(void) const
	{
		return mMeshInfo.priority;
	}
	//------------------------------------------------------------------------
	inline
		const Resources::ResourceId& 
		ParticleRenderComponent::GetEmitMeshID( void ) const
	{
		return mEmitMeshRes->GetResID();
	}
	//------------------------------------------------------------------------
	inline void ParticleRenderComponent::NeedUpdate()
	{
		mParticleSystem->_NeedUpdate();
	}
	//--------------------------------------------------------------------------
	inline Graphic::Camera* ParticleRenderComponent::_getCurrentCamera() const
	{
		return mCurCamera;
	}
}

#endif // __particlerendercomponent_H__