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

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

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The above copyright notice and this permission notice shall be included in
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THE SOFTWARE.
****************************************************************************/
#ifndef __skeletonres_H__
#define __skeletonres_H__

#include "resource/resource.h"
#include "util/stringatom.h"

namespace Resources
{
	typedef Util::StringAtom BoneID;
	struct SkelBone
	{
		ushort parentIndex;	//	root skeleton
		BoneID boneName;	//	must be valid
		Math::matrix44 inverseBindingMatrix;
	};

	class SkelTreeData : public Core::RefCounted
	{
		__DeclareClass(SkelTreeData);
	public:
		GPtr<SkelTreeData> parent;

		Util::String      name;

		Math::float4      pos;
		Math::quaternion  rot;
		Math::float4      scale;
	};

	typedef Util::Array<SkelBone> SkelBoneContainer;

	const SizeT MaxSkeletonBoneCount = 0xFFFF;

	class SkeletonRes: public Resources::Resource
	{
		__DeclareSubClass(SkeletonRes, Resource);
	public:
		SkeletonRes();
		virtual ~SkeletonRes();

		const SkelBoneContainer& GetSkelBones(void) const;

		const SizeT GetBonesCount() const;

		/**
		* AddSkelBone  add one bone
		* @param: const SkelBone & bone  
		* @return: bool  
		* @see: 
		* @remark:  if bigger than MaxSkeletonBoneCount, return false; bone.parentIndex and bone.boneName must be valid
		*/
		bool AddSkelBone( const SkelBone& bone);

		// @Resource::CalculateRuntimeSize
		virtual SizeT CalculateRuntimeSize(void) const;

		const Util::Array<Util::String>& GetSkelNames() const;

		const Util::Dictionary<IndexT, Util::String>& GetSkelKeyPairs() const;

		inline void ReserveSkelTree(SizeT size);

		bool AddSkelTreeData(GPtr<SkelTreeData>& pTreeData, const Util::String& parentName);

		const SizeT GetSkelTreeDataCount() const;

		Util::Dictionary< Util::String, GPtr<SkelTreeData> >& GetSkelTree();

		Util::Array< GPtr<SkelTreeData> >& GetSkelTreeArray();

		bool  IsSkelTreeEmpty();

		void SetSkelID( const Util::String skelId );

		const Util::String GetSkelID();

		void AddSkeletonPair();

	protected:
		// @Resource::SwapLoadImpl
		virtual bool SwapLoadImpl( const GPtr<Resource>& tempRes);
		// @Resource::UnLoadImpl
		virtual void UnLoadImpl(void);

		void Reserve(SizeT size );

		SkelBoneContainer mSkelBones;
		Util::Array<Util::String> mSkelNames;
		Util::Dictionary<IndexT, Util::String> mSkelKeyPair;


		Util::Dictionary< Util::String, GPtr<SkelTreeData> > mSkelTree;

		Util::Array< GPtr<SkelTreeData> > mSkelTreeArray;

		Util::String skelId;

		friend class SkeletonResLoader;
	};
	//------------------------------------------------------------------------
	inline
		const SkelBoneContainer& 
		SkeletonRes::GetSkelBones(void) const
	{
		return mSkelBones;
	}
	//------------------------------------------------------------------------
	inline
		void 
		SkeletonRes::Reserve(SizeT size )
	{
		n_assert( size <= MaxSkeletonBoneCount );
		if ( size > 0 )
		{
			mSkelBones.Reserve(size);
		}
	}

	inline const SizeT SkeletonRes::GetBonesCount() const
	{
		return mSkelBones.Size();
	}

	inline const Util::Array<Util::String>& SkeletonRes::GetSkelNames() const
	{
		return mSkelNames;
	}

	inline const Util::Dictionary<IndexT, Util::String>& SkeletonRes::GetSkelKeyPairs() const
	{
		return mSkelKeyPair;
	}

	inline void SkeletonRes::ReserveSkelTree(SizeT size)
	{
		n_assert( size <= MaxSkeletonBoneCount );
		mSkelTree.Reserve(size);

		mSkelTreeArray.Reserve(size);
	}

	inline const SizeT SkeletonRes::GetSkelTreeDataCount() const
	{
		return mSkelTree.Size();
	}

	inline Util::Dictionary< Util::String, GPtr<SkelTreeData> >& SkeletonRes::GetSkelTree() 
	{
		return mSkelTree;
	}

	inline Util::Array< GPtr<SkelTreeData> >& SkeletonRes::GetSkelTreeArray() 
	{
		return mSkelTreeArray;
	}

	inline bool SkeletonRes::IsSkelTreeEmpty()
	{
		return mSkelTree.IsEmpty();
	}
	inline const Util::String SkeletonRes::GetSkelID()
	{
		return skelId;
	}

}

#endif // __skeletonres_H__